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Πέμπτη 31 Ιανουαρίου 2019

What's new in atopic eczema? An analysis of systematic reviews published in 2016. Part 1: treatment and prevention

Summary

This review is part of a series of annual updates summarizing the evidence base for atopic eczema (AE). It provides a summary of key findings from 28 systematic reviews that were published or indexed during 2016 with a focus on treatment and prevention of AE. There is reasonable evidence of benefit for topical corticosteroids, calcineurin inhibitors, a glycyrrhetinic acid‐containing preparation (Atopiclair®), oral ciclosporin, oral azathioprine, narrowband ultraviolet B radiation and education programmes. Overall, there is evidence that topical corticosteroids and calcineurin inhibitors have similar efficacy and that both can prevent AE flares when used twice weekly as maintenance therapy. However, topical calcineurin inhibitors are costlier and have more adverse reactions, thus topical corticosteroids should remain the standard of care for patients with AE. There is no evidence that multiple applications are better than once‐daily application of topical corticosteroid. There is inconsistent evidence to support omalizumab and specific allergen immunotherapy use in AE. There is some evidence that vitamin D supplementation and synbiotics reduce AE severity, although the margin of improvement may not be clinically meaningful. There is little evidence to support the use of wet wraps or of complementary/alternative medicine (including Chinese herbal medicine). There is some evidence to suggest that a diet high in fish in infancy may be preventative for AE, but other dietary interventions for the prevention of AE show little promise. This review provides a succinct guide for clinicians and patients wishing to remain up to date with the latest evidence for the treatment and prevention of AE.



http://bit.ly/2UBunO9

What's new in atopic eczema? An analysis of systematic reviews published in 2016. Part 2: Epidemiology, aetiology and risk factors

Summary

This review forms part of a series of annual updates that summarize the evidence base for atopic eczema (AE), providing a succinct guide for clinicians and patients. It presents the key findings from 14 systematic reviews published in 2016, focusing on AE epidemiology, aetiology and risk factors. For systematic reviews on the treatment and prevention of AE and for nomenclature and outcome assessments, see Parts 1 and 3 of this update, respectively. The annual self‐reported prevalence of AE is a range of 11.4–24.2%, compared with a general practioner‐diagnosed prevalence of 1.8–9.5%. The mean age of AE diagnosis is 1.6 years. Persistent AE is associated with more severe disease at the time of diagnosis, onset after the age of 2 years and female sex. There is a significant association between having AE and subsequent development of food allergy. Food allergy is also associated with more severe and persistent AE. No consistent association was found between the timing of allergenic food introduction and the risk of developing AE. Evidence from heterogeneous studies indicates that skin absorption is increased in patients with AE, and that there is increased colonization with Staphylococcus aureus in lesional and nonlesional skin and the nasal mucosa of patients with AE compared with controls. There is uncertain evidence indicating an association between AE and smoking exposure, antenatal infection and low maternal vitamin D levels during pregnancy. Weak evidence suggests an increased risk of basal cell carcinoma, but not of melanoma or squamous cell carcinoma, while the risk of glioma is reduced.



http://bit.ly/2RZXg9z

Occurrence, speciation, and risks of trace metals in soils of greenhouse vegetable production from the vicinity of industrial areas in the Yangtze River Delta, China

Abstract

The effect of industrial activities on trace metals in farmland of rapidly industrializing regions in developing countries has increasingly been a concern to the public. Here, soils were collected from 13 greenhouse vegetable production (GVP) farms or bases near industrial areas in the Yangtze River Delta of China to investigate the occurrence, speciation, and risks of Cr, Cu, Zn, Cd, Ni, and Pb in GVP soil. The results revealed that the main metal elements causing GVP soil pollution were Cd, Zn, Ni, and Cu, of which contamination levels were generally unpolluted to moderately polluted. Zinc pollution was mainly attributed to heavy fertilization, while Cd, Ni, and Cu pollution may be greatly ascribed to industrial effluents and coal combustion. Metal speciation studies showed that most of Cr, Ni, Cu, and Zn was present in residual fraction while more than half of Cd and Pb was present in non-residual fractions. Additionally, pollution of Cd, Cu, Ni, and Zn in GVP soil increased their corresponding mobile fractions. Risk assessment using potential ecological risk index and risk assessment code showed that Cd was the major risk contributor. Specifically, Cd generally posed moderate or considerable ecological risk as well as displayed medium or high mobility risk in GVP soil. Thus, great attention should be paid to the contribution of both industrial discharges and intensive farming to soil pollution by trace metals, especially Cd, because of its high mobility risk.



http://bit.ly/2HJyh5Z

Techno-economic assessment of coconut biodiesel as a potential alternative fuel for compression ignition engines

Abstract

Over the past years, there were dramatic improvements in identifying and assessing various feedstocks for the production of biodiesel fuels. To promote a particular feedstock as a renewable source of energy, it is important to analyze their energy, economic, and engine performance characteristics. The current work attempts to evaluate the net energy and economic indices for both fossil diesel and coconut-blended diesel (B20) considering the diesel consumption by the Indian railways. Further, we present the experimental results of a multi-cylinder diesel engine operated with neat coconut biodiesel (B100) and fossil diesel at various load and speed conditions. The engine experiments reveal that the coconut biodiesel exhibits leaner combustion and shorter ignition delay than fossil diesel. Lower amount of carbon monoxide, hydrocarbon, and smoke emission is observed in the case of coconut biodiesel, with higher levels of nitric oxide (14%) and fuel consumption than diesel. The coefficient of variation in indicated mean effective pressure is within the range of better driveability zone for both the fuels at all test conditions. Overall the engine performance, emission and combustion results with neat coconut biodiesel are favorable with a penalty in NO emission at high load conditions. The techno-economical study highlights higher production cost per liter of B20 than the cost of fossil diesel. However, the net energy ratio (NER) for B20 is 1.021, favoring higher output than diesel and thus lowers the dependency on crude oil.



http://bit.ly/2sYbTLF

Biodegradation of anthracene and different PAHs by a yellow laccase from Leucoagaricus gongylophorus

Abstract

Laccases produced by Leucoagaricus gongylophorus act in lignocellulose degradation and detoxification processes. Therefore, the use of L. gongylophorus laccase (Lac1Lg) was proposed in this work for degradation of anthracene and others polycyclic aromatic hydrocarbons without the use of mediators. Degradation reactions were performed in buffer aqueous solution with 10 ppm of anthracene and other PAHs, Tween-20 in 0.25% v/v and a laccase preparation of 50 U. The optimum condition (pH 6.0 and 30 °C) was determined by response surface methodology with an excellent coefficient of determination (R2) of 0.97 and an adjusted coefficient of determination (R2adj) of 0.93. In addition, the employment of the mediator ABTS decreased the anthracene biodegradation from 44 ± 1% to 30 ± 1%. This optimum pH of 6.0 suggests that the reaction occurs by a hydrogen atom transfer mechanism. Additionally, in 24 h Lac1Lg biodegraded 72 ± 1% anthracene, 40 ± 3% fluorene and 25 ± 3% phenanthrene. The yellow laccase from L. gongylophorus biodegraded anthracene and produced anthrone and anthraquinone, which are interesting compounds for industrial applications. Moreover, this enzyme also biodegraded the PAHs phenanthrene and fluorene justifying the study of Lac1Lg for bioremediation of these compounds in the environment.



http://bit.ly/2HJyczd

Anatomical Study of a Chimeric Fascio-Osteomyocutaneous Fibula Flap for Free Microvascular Tissue Transfer

10-1055-s-0039-1677769_180178-1.jpg

J reconstr Microsurg
DOI: 10.1055/s-0039-1677769

Background Functional restoration in reconstructive surgery can require complex and adaptable approaches. In this anatomical study, the combined angiosome of the septofasciomyocutaneous vessels originating from the fibular artery was defined as basis for a chimeric flap of the lateral lower leg. Methods Methylene blue injection into the fibular artery was performed in 10 legs of fresh cadavers for visualization of the angiosome on the skin, fibula, and adjacent muscles as the lateral hemisoleus (HS) muscle. With regards to clinical specifications a maximum-size flap containing cutaneous, osseous, and muscular elements was raised. During dissection, the distribution pattern, number and size of stained septofasciomyocutaneous vessels at the lateral border of the proximal, middle, and distal thirds of the fibula length, as well as the flap dimensions were evaluated. Results In all specimens, vessels originating from the fibular artery and supplying the resected fibular bone, the fasciocutaneous flap and dorsally located muscles were found. The mean number of vessels to the skin was 4.2 per leg with a mean diameter of 1.1 ± 0.5 mm (range: 0.4–2.5 mm) and to the HS muscle 3.4 vessels with a mean diameter of 1.2 ± 0.7 mm (range: 0.3–3.0 mm). A total of 88.4% vessels occurred in the proximal and middle thirds of the legs. The resected fibula graft had a mean length of 23.8 ± 3.9 cm (range: 19.9–31.0 cm) and the skin paddle had a mean size of 23.8 ± 3.9 cm (range: 19.9–31.0 cm) × 7.0 cm. The flexor hallucis longus (FHL) muscle had a mean volume of 37.2 ± 15.8 cm3 (range: 18–58 cm3) and the lateral HS muscle 77.1 ± 23.3 cm3 (range: 48–105 cm3). Conclusion Our results and anatomical descriptions indicate that chimeric fibula flaps can meet the specific reconstructional requirements of complex and large sized defects representing a promising basis for further studies.
[...]

Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.

Article in Thieme eJournals:
Table of contents  |  Abstract  |  Full text



http://bit.ly/2DMqUXn

Tenosynovial Giant Cell Tumours of the Hand: A Multicentre Case Control Study

Many factors have been proposed to contribute to the risk of recurrent TSGCT (Tenosynovial Giant Cell Tumours); however, we remain unable to predict those at risk which formed the rationale for this multicentre retrospective case control study of 28 patients with recurrence. We age and sex matched cases of recurrence 1:1 with controls over 10 years. Using Cox regression, we present hazard ratios (HR) for recurrence with 95% confidence intervals (CI). Out of 285 cases, 28 individuals developed recurrence after a median 2.4 years.

http://bit.ly/2RZAAq8

Hypoxia Improves Hair Inductivity of Dermal Papilla Cells via Nuclear NADPH Oxidase 4‐Mediated Reactive Oxygen Species Generation

Summary

Background

Dermal papilla cells (DPCs) play a key role in hair regeneration and morphogenesis. Therefore, tremendous efforts have been made to promote DPCsʼ hair inductivity

Objectives

The aim of this study was to investigate the mitogenic and hair inductive effects of hypoxia on DPCs and examine the underlying mechanism of hypoxia‐induced stimulation of DPCs.

Results

Hypoxia significantly increased the proliferation and delayed the senescence of DPCs via Akt phosphorylation and downstream pathways. Hypoxia upregulated the growth factor secretion of DPCs through mitogen‐activated protein kinase pathway. Hypoxia‐preconditioned DPCs induced the telogen‐to‐anagen transition in C3H mice, and also enhanced hair neogenesis in a hair reconstitution assay. Injected GFP‐labeled DPCs migrated to outer‐root sheath of hair follicle, and hypoxia‐preconditioning increased the survival and migration of DPCs in vivo. Conditioned medium obtained from hypoxia increased the hair length of mouse vibrissa follicles via upregulation of alkaline phosphatase, vascular endothelial growth factor, and glial cell line‐derived neurotrophic factor. We examined the mechanism of this hypoxia‐induced stimulation, and found that reactive oxygen species (ROS) play a key role. For example, inhibiting of ROS generation by N‐acetyl‐L‐cysteine or diphenyleneiodonium treatment attenuated DPCsʼ hypoxia‐induced stimulation, but treatment with ROS donors induced mitogenic effects and anagen transition. NADPH oxidase 4 (NOX4) is highly expressed in DPCsʼ nuclear region, and NOX4 knockout by CRISPR‐Cas9 attenuated the hypoxia‐induced stimulation of DPCs.

Conclusions

Our results suggest that DPC culture under hypoxia has great advantages over normoxia, and is a novel solution for producing DPCs for cell therapy.

This article is protected by copyright. All rights reserved.



http://bit.ly/2MHiOSB

Socio‐demographic factors do not have a large influence on psoriasis patients’ adherence to topical treatment

Abstract

Topical drugs containing corticosteroids are the most frequently used treatments for mild‐to‐moderate psoriasis, but adherence rates to topical drugs are low and up to 80% of psoriasis patients are classified as non‐adherent, which present a barrier to treatment success.3 Barriers to treatment adherence can be divided into socio‐demographic, healthcare, disease, treatment, and patient‐related factors. In a prospective study by Zaghloul et al., adherence to unspecified topical and systemic antipsoriatic drugs was investigated by counting pills or weighing medication bottles; lower adherence was associated with being single, male, or unemployed.

This article is protected by copyright. All rights reserved.



http://bit.ly/2sX8ehr

Recommendation to include hydroxyethyl (meth)acrylate in the British Baseline Patch Test Series

Summary

Background

(Meth)acrylates are potent sensitisers and a common cause of allergic contact dermatitis (ACD). The frequency of (meth)acrylate ACD has increased with soaring demand for acrylic nails. A preliminary audit has suggested a significant rate of positive patch tests to (meth)acrylates using aimed testing in patients providing a clear history of exposure. (Meth)acrylates have to date not been routinely tested in the baseline patch test series in the U.K. and Europe.

Objectives

To determine whether inclusion of 2‐hydroxyethyl methacrylate (2‐HEMA) 2% in petrolatum (pet.) in the baseline series detects cases of treatable (meth)acrylate ACD.

Methods

During 2016‐2017, 15 U.K. dermatology centres included 2‐HEMA in the extended baseline patch test series. Patients with a history of (meth)acrylate exposure, or who tested positive to 2‐HEMA, were selectively tested with a short series of eight (meth)acrylate allergens.

Results

5,920 patients were consecutively patch tested with the baseline series, of whom 669 were also tested to the (meth)acrylate series. 102 of 5,920 (1·7%) tested positive to 2‐HEMA and 140 (2·4%) to at least one (meth)acrylate. Had 2‐HEMA been excluded from the baseline series, (meth)acrylate allergy would have been missed in 36 of 5,920 (0·6% of all patients). The top (meth)acrylates eliciting a positive reaction were 2‐HEMA (n=102; 1·7%), 2‐hydroxypropyl methacrylate (n=61; 1%) and 2‐hydroxyethyl acrylate (n=57; 1%).

Conclusions

We recommend that 2‐HEMA 2% pet. be added to the British baseline patch test series. We also suggest a standardised short (meth)acrylate series which is likely to detect most cases of (meth)acrylate allergy.

This article is protected by copyright. All rights reserved.



http://bit.ly/2MHj9ER

Decreased 5‐hydroxymethylcytosine immunoreactivity in primary Merkel cell carcinomas is a strong predictor for disease‐specific death

Abstract

Merkel cell carcinoma (MCC) is an infrequent malignant skin tumour with epithelial and neuroendocrine differentiation. Though it is a highly aggressive malignancy, the distinct molecular pathogenesis of MCC is not yet fully understood. Apart from DNA methylation, histone modification, and microRNA‐mediated and long non‐coding RNA‐mediated regulation, hydroxymethylation may also play an important role in cancer development. Loss of 5‐hydoxymethylcytosine (5‐hmc) has been reported in a variety of cancers, including skin malignancies such as melanoma.

This article is protected by copyright. All rights reserved.



http://bit.ly/2sX889z

A Reliability Study Using Network Oriented Research Assistant (NORA®) Examining the Use of Digital Photographs in the Assessment of Psoriasis

Abstract

Psoriasis is a chronic immune‐modulated condition affecting approximately 2‐3% of the general population. In addition to cutaneous lesions, psoriasis is associated with systemic and mental health co‐morbidities. Psoriasis is among the most extensively researched dermatologic conditions, with many novel treatment options in the drug development pipeline.

This article is protected by copyright. All rights reserved.



http://bit.ly/2MJbOov

Trends in Utilization and Expenditure for Onychomycosis Treatments in the United States in 2013–2016



http://bit.ly/2HIMCQ0

Simultaneous adsorption and immobilization of As and Cd by birnessite-loaded biochar in water and soil

Abstract

A novel biochar was prepared by loading birnessite to improve its capability to simultaneously adsorb As(III), As(V), and Cd(II) in water and soil. Layer sheet–structured birnessite was successfully loaded onto the biochar surface with increased functional groups. SEM, XRD, and FTIR combining with XPS analysis were utilized to characterize birnessite-loaded biochar and its adsorption mechanisms for As and Cd(II). The saturated adsorption capabilities of the birnessite-loaded biochar (BRB) for As(III), As(V), and Cd(II) were as large as 3543, 2412, and 9068 mg/kg (calculated by Langmuir isotherm model), much higher than for the corresponding non-loaded biochar (no adsorption of As, 4335 mg/kg for Cd). Adsorption of Cd and As onto BRB was controlled by multi mechanisms; Cd(II) appeared to coordinate to vacant sites of birnessite, while As formed surface complex with functional groups. Furthermore, BRB showed higher abilities for co-adsorption of As(III) and Cd or As(V) and Cd, which may be due to the formation of Cd3(AsO4)2 surface precipitate as well as synergistic reaction between anions and cations. After conditioning to soil, BRB showed potential for Cd and As remediation under both flooded and unflooded conditions. These results suggested that BRB can be used as an effective sorbent for simultaneous immobilization of heavy metals, especially As and Cd, in environmental and agricultural systems.



http://bit.ly/2RY6P9l

Treatment of Desmoid Tumors in 2019

This article describes an approach to active surveillance and treatment of desmoid tumor (aggressive fibromatosis).

http://bit.ly/2G1MzwO

Improving the Nuclear-Localized Androgen Receptor Splice Variant 7 Test—In Reply

In Reply Nicolazzo and colleagues suggest that the use of confocal microscopy would improve the technical and clinical accuracy of the androgen receptor splice variant 7 (AR-V7) diagnostic test. It is hypothesized that limitations (unspecified) of the widefield optics limit the ability to determine the 3-dimensional cellular organization and the localization of protein. Although confocal microscopy is a suitable research tool for evaluating the subcellular localization of organelles and proteins, it is impractical for this application in the clinical setting and is redundant for accurately determining protein localization. As evidenced by our studies to date, the specificity of the test to determine a poor outcome if a patient is treated with androgen receptor signaling inhibitors is extremely high, a finding independently corroborated in a separate cohort and in the PROPHECY study presented at the 2018 annual meeting of the American Society of Clinical Oncology.

http://bit.ly/2Gdkxhe

The Best Medicine

Laughing with a patientis like opening the dishwasher

http://bit.ly/2FZKCkD

Adding Docetaxel to Androgen Deprivation Therapy in Patients With High-Risk Prostate Cancer

This randomized clinical trial compares the use of combined androgen-deprivation therapy plus docetaxel with androgen-deprivation therapy alone in patients with prostate cancer who develop increasing levels of prostate-specific antigen after primary local therapy.

http://bit.ly/2Gc1dkx

Derivation of Anthracycline and Anthraquinone Equivalence Ratios to Doxorubicin for Late-Onset Cardiotoxicity

This multicenter cohort study pools data from more than 28 000 children with cancer who had survived 5 or more years to evaluate the optimal dose equivalence ratio for late-onset cardiomyopathy between doxorubicin and other 3 other anthracyclines (daunorubicin, epirubicin, and idarubicin) and the anthraquinone mitoxantrone.

http://bit.ly/2G1MrgO

Improving the Nuclear-Localized Androgen Receptor Splice Variant 7 Test

To the Editor We read with great interest the article by Scher et al. The aim of the study was to evaluate the clinical use of the Epic Sciences nuclear-localized androgen receptor splice variant 7 (AR-V7) test in circulating tumor cells (CTCs) to determine the best therapeutic strategy for patients with metastatic castration-resistant prostate cancer. The issue is interesting and addresses an important challenge of precision medicine. However, we would like to make a few remarks, which are mainly technical in nature. Although the assay used for analysis of the CTCs is highly sophisticated, we believe that the use of the fluorescence microscopy is a limiting factor that might directly affect results. Notably, the authors considered only AR-V7–positive CTCs exhibiting a nuclear-specific localization (according to AR-V7 scoring criteria) and discarded those with a diffuse signal. We believe that fluorescence analysis using confocal technology would be useful. Confocal microscopy allows determination with absolute certainty of the cellular localization of a protein through an assessment of its 3-dimensional organization. The use of confocal microscopy would have clarified the predictive value of hormone therapy of CTCs with both nuclear and cytoplasmic AR-V7 localization. Furthermore, the establishment of a cut-off value of AR-V7–positive CTCs would be appreciated for predictive purposes in the clinical setting.

http://bit.ly/2Gc18NL

Adjuvant Androgen- Deprivation Therapy for Prostate Cancer

In this issue of JAMA Oncology, Oudard et al report on patients with the earliest form of potentially metastatic prostate cancer: those without castration (androgen dependent) with no detectable metastases who have developed rising prostate-specific antigen (PSA) levels. The hypothesis in 2003 was that early use of docetaxel could increase the rate of cure. Two hundred fifty patients were randomized to receive androgen-deprivation therapy (ADT) for 1 year or ADT for 1 year plus docetaxel for 6 cycles. There was no survival advantage with the addition of docetaxel or delay in the development of metastases, although there was a 15% reduction in PSA relapse. At a median follow-up of 10.5 years, survival was better than expected, there was no sign of separation of the survival curves between the treatment groups, and no significant between-arm difference in radiographic progression-free survival was noted (hazard ratio [HR], 0.99; 95% CI, 0.71-1.39; P = .95). The authors concluded that "Addition of docetaxel to androgen deprivation therapy seems unwarranted in patients with high-risk prostate cancer without metastases in the absence of better predictors of risk for metastatic disease." Is such a conclusion warranted?

http://bit.ly/2G1Mol8

Biospecimens, Research Consent, and Distinguishing Cell Line Research

This Special Contribution discusses newly revised regulations for human research affecting the use biospecimens and makes recommendations to enable ethically appropriate regulation of biospecimen research across the spectrum of cancer research.

http://bit.ly/2GevvTC

Role of PTP/PTK trans activated insulin-like signalling pathway in regulation of grasshopper ( Oedaleus asiaticus ) development

Abstract

Protein tyrosine phosphatase (PTPs) and protein tyrosine kinase (PTKs) genes are responsible for the regulation of insect insulin-like pathway (ILP), cells growth, metabolism initiation, gene transcription and observing immune response. Signal transduction in insect cell is also associated with PTPs and PTKs. The grasshopper (Oedaleus asiaticus) 'Bey-Bienko' were treated with dsRNA of protein tyrosine non-receptor type 4 (PTPN4) and protein tyrosine kinase 5 (PTK5) along with control (water). Applying dsPTK5 treatments in 5th instar of Oedaleus asiaticus, significant reduction was recorded in body dry mass, growth rate and overall performance except survival rate. Whereas with PTPN4, no such significant impact on all of these growth parameters was recorded. Expression of genes in ILP 5th instar of Oedaleus asiaticus by the application of dsPTPN4 and dsPTK5 revealed that PTK, INSR (insulin receptor), IRS (insulin receptor substrate), PI3K (phosphoinositide 3-kinase), PDK (3-phosphoinositide-dependent protein kinase), Akt (protein kinase B) and FOXO (forkhead transcription factor) significantly expressed with downregulation except PTPN4, which remained non-significant. On the other hand, the phosphorylation level of ILP four proteins in O. asiaticus with the treatment of dsPTPN4 and dsPTK5 significantly affected P-IRS and P-FOXO, while P-INSR and P-AKT remained stable at the probability level of 5%. This indicated that the stress response in the O. asiaticus insulin-like signalling pathway (ILP) reduced. Regarding association of protective enzymatic activities, ROS (relative oxygen species), CAT (catalase) and PO (phenol oxidase) increased significantly with exposure to dsPTK5 as compared to dsPTPN4 and control, while exposure of 5th instar of O. asiaticus to dsPTPN4 treatment slightly raised CAT and PO activities with but significant contribution. No such significant effect on MFO and POD was seen using dsPTPN4 and dsPTK5. This showed that in the ILP of O. asiaticus, PTK5 was detrimental to growth, body mass and overall performance, which ultimately benefited insect detoxification with high-energy cost.



http://bit.ly/2BdHSwd

Removal of antibiotics from aqueous solutions by nanoparticles: a systematic review and meta-analysis

Abstract

Antibiotics, as one of the emerging pollutants, are non-biodegradable compounds and long-term exposure to them may affect endocrine, hormonal, and genetic systems of human beings, representing a potential risk for both the environment and human health. The presence of antibiotics in surface waters and drinking water causes a global health concern. Many researches have stated that conventional methods used for wastewater treatment cannot fully remove antibiotic residues, and they may be detected in receiving waters. It is reported that nanoparticles could remove these compounds even at low concentration and under varied conditions of pH. The current study aimed to review the most relevant publications reporting the use of different nanoparticles to remove antibiotics from aqueous solutions. Moreover, meta-analysis was conducted on the results of some articles. Results of meta-analysis proved that different nanoparticles could remove antibiotics with an acceptable efficiency of 61%. Finally, this review revealed that nanoparticles are promising and efficient materials for degradation and removal of antibiotics from water and wastewater solutions. Furthermore, future perspectives of the new generation nanostructure adsorbents were discussed in this study.



http://bit.ly/2G0EzMG

Rebuttal to: Zhang et al. “Research development, current hotspots, and future directions of water research based on MODIS images: a critical review with a bibliometric analysis,” vol. 24, pp. 15226–15239



http://bit.ly/2GcNdXN

Parametric and non-parametric convergence analysis of electricity intensity in developed and developing countries

Abstract

This paper examines the pattern of convergence in electricity intensity in a sample of 79 countries. We apply the residual augmented least squares regression to the convergence of energy intensity. This method has been used in the convergence of per capita energy consumption but not convergence of energy intensity. Furthermore, in contrast to the previous studies which mainly used the conventional beta convergence approach to examine conditional convergence, we use a beta convergence method that is capable of identifying the actual number of countries that contribute to conditional convergence. The sigma and gamma convergences of electricity intensity are also examined. In addition to the full sample of countries, we also examine convergence in African countries, Asian and Oceanic countries, American countries and European countries, separately. Convergences in OECD and non-OECD countries are also examined, separately. In the full sample, the results show convergence exists in 54% of the countries in the total sample. There is convergence in 65% of the African countries, 61% of the American countries, 43% of the Asian and Oceanic countries and 33% of the European countries. In terms of the regional classification, it is also observed that convergence exists for 58% of the non-OECD countries and 31% of the OECD countries. There is evidence for sigma convergence in all the blocs with the exception of European and non-OECD countries. With the exception of African countries, there is evidence for gamma convergence in all the countries and the various blocs. The policy implications of the results are discussed.



http://bit.ly/2G1vOSq

Acknowledgment to reviewers—2018



http://bit.ly/2DNl6gp

Silver prices and solar energy production

Abstract

The goal of this paper is to identify, for the first time, the role of solar production in driving silver prices. The empirical analysis makes use of the ARDL model and the combined cointegration. The results, spanning the period 1990–2016, document that stronger solar installed capacities, as well as higher gross electricity production from solar sources, lead to higher silver prices. The findings could be of great importance to silver suppliers and to energy policymakers and regulators, as well as to solar panel manufacturers.



http://bit.ly/2t20sTb

Habitat selection of wintering cranes ( Gruidae ) in typical lake wetland in the lower reaches of the Yangtze River, China

Abstract

Shengjin Lake is a typical lake wetland in the lower reaches of the Yangtze River. It is one of the most important wetlands in the world. It is also an important habitat for wintering cranes in China. Environmental factors play an important role in habitat selection of cranes of wetland ecosystem. In this paper, we analyzed land-use types and the four kinds of winter cranes in the Shengjin Lake from the years 1986 to 2015. Also, we adopted grey relational analysis and power function model to analyze the relevance between crane population and land-use types, and the main habitat types of cranes were obtained. We used principal component analysis method to analyze the main influence factor for habitat selection of crane. The results indicated that the main habitat type of four species of overwintering crane was reed-flat; the main factors affecting the habitat selection of cranes were water level, planktonic biomass, and distance to settlement. Among them, the weight of water level factor was the highest, which showed that water level was the most important factor affecting the habitat selection of cranes, followed by planktonic biomass, and the third was the weight of distance to settlement. The average values of them were 0.37 m, 9.47 mg L−1, and 1.25 km, respectively.



http://bit.ly/2MJyVio

Biodegradation of persistent environmental pollutants by Arthrobacter sp.

Abstract

Persistent environmental pollutants are a growing problem around the world. The effective control of the pollutants is of great significance for human health. Some microbes, especially Arthrobacter, can degrade pollutants into nontoxic substances in various ways. Here, we review the biological properties of Arthrobacter adapting to a variety of environmental stresses, including starvation, hypertonic and hypotonic condition, oxidative stress, heavy metal stress, and low-temperature stress. Furthermore, we categorized the Arthrobacter species that can degrade triazines, organophosphorus, alkaloids, benzene, and its derivatives. Metabolic pathways behind the various biodegradation processes are further discussed. This review will be a helpful reference for comprehensive utilization of Arthrobacter species to tackle environmental pollutants.



http://bit.ly/2sWuFmC

Perception of household in regards to water pollution: an empirical evidence from Pakistan

Abstract

Water pollution is one of the main threats to public health in Pakistan. The watchdogs for drinking water quality are toothless, hence Pakistan's ranking in maintaining water quality standards is 80th out of 122 nations. Despite such alarming situation coupled with violation of various drinking water quality parameters set by WHO, the risk perception of people remains an unfolded area of research. This paper examines the risk perception of household regarding water pollution in Pakistan and its potential effect on human health. In this way, we present a more analytical interpretation of the subject by collecting data from a survey questionnaire from one of the largest urban cities of Pakistan. Conclusions are drawn which stress that education, income, and knowledge of water pollution have higher impact on risk perception. From this position, and with the development of implications for policy, we demonstrate the need of a systematic quantification of various uncertainties that can provide more realistic support for remediation-related decisions to policy makers.



http://bit.ly/2MG0wRR

Effects of exposure to triphenyltin (TPT) contaminant on sperm activity in adulthood of Calomys laucha exposed through breastfeeding

Abstract

Triphenyltin (TPT) is an organotin compound (OT), primarily used in agriculture and in the composition of antifouling paints for ships worldwide. Studies have showed its effects as an endocrine disrupter in several organisms by preventing enzymatic expression and causing reproductive toxicity. This study aimed to evaluate the effects of exposure to TPT, via breastfeeding, on reproductive physiology in the Calomys laucha species. The experimental design was compound of five groups, two controls and three with different doses of TPT. Moreover, females were exposed by gavage to the TPT for 20 days, from the 1st day postpartum to the 21st postnatal day (PND). Then, the pups were euthanized and the kinetics, organelles, and biochemistry of the sperm were evaluated. The results presented a reduction in total motility in the groups exposed to TPT. Regarding cellular organelles analysis, a loss in membrane integrity was evidenced; the functionality of mitochondria showed diminution followed by increased acrosome reaction. In conclusion, the TPT causes alteration of the reproductive parameters, decreasing the activity and sperm quality in individuals exposed in the breastfeeding phase.



http://bit.ly/2t6FTFz

Delimitation of groundwater zones under contamination risk using a bagged ensemble of optimized DRASTIC frameworks

Abstract

Developing a reliable groundwater vulnerability and contamination risk map is very important for groundwater management and protection. This study aims to compare various modified DRASTIC vulnerability frameworks based on rate calibration using the Wilcoxon rank-sum test (WRST), frequency ratio (FR) and weight optimization using the correlation coefficient (CC), the analytic hierarchy process (AHP), and genetic algorithms (GA), as well as to introduce, for the first time, an aggregated approach based on a bagging ensemble to develop a combined modified DRASTIC model. This research was conducted in the Khoy plain, NW Iran. To develop a typical DRASTIC map, seven DRASTIC data layers were generated, weighted, and then overlaid in ArcGIS. The nitrate (NO3) concentrations at 54 sites in the study area were used to validate the models by calculating the correlation coefficient (r) between the vulnerability/risk indices and NO3 concentrations. The calculated r value for the typical DRASTIC was 0.12. A sensitivity analysis reveals that the impact of the vadose zone and conductivity parameters with mean variation indices of 22.2 and 7.5%, respectively, have the highest and lowest influence on aquifer vulnerability. The r values increased for all the optimized frameworks. The results show that the WRST and GA methods are the most effective methods for calibration and optimization of DRASTIC rates and weights, with the WRST-GA-DRASTIC model obtaining an r value of 0.64. A bagging ensemble model was employed to combine the advantages of each standalone model. The bagging ensemble model yields an r value of 0.67. The ensemble model has the potential to increase the r value further than both the standalone optimized frameworks and the typical DRASTIC approach. In terms of spatial distribution class area (%), the bagging ensemble-DRASTIC model demonstrates that the moderate and low contamination risk classes with 16.4 and 23.1% of the total area cover the lowest and highest parts of the plain.



http://bit.ly/2MMunrW

Buoyant wind-driven pollutant dispersion and recirculation behaviour in wedge-shaped roof urban street canyons

Abstract

The present study investigated the buoyant wind-driven pollutant plume dispersion and recirculation behaviour inside urban street canyons formed by buildings with wedge-shaped roofs. Numerical modelling was performed using a computational fluid dynamics (CFD) large eddy simulation (LES). Street canyon models with a strongly buoyant fire source located on the street and environmental winds perpendicular to the canyon were developed using the fire dynamics simulator (FDS). The complex interaction of buoyancy and wind, as well as their combined effects on the pollutant plume dispersion, was simulated inside the urban street canyon. The results showed that the flow pattern of pollutant plume dispersion inside the street canyon with increasing wind speed for different roof inclination angles could be divided into three regimes, including a recirculation regime, a quasi-recirculation regime and a non-recirculation regime. The pollutant levels in the street canyon, as indexed by carbon monoxide (CO) concentration, increased under the recirculation regime. For the quasi-recirculation regime, however, the leeward buildings primarily suffered from the higher pollutant levels. The critical wind speed needed to trigger recirculation was analysed for various roof inclination angles. A correlation was proposed to predict the critical wind speed of various wedge-shaped roof angles for recirculation regime and quasi-recirculation regimes.



http://bit.ly/2t6FN0F

Default Mode Network Dynamics in Covert Consciousness

Publication date: Available online 30 January 2019

Source: Cortex

Author(s): Yelena G. Bodien, Zachary D. Threlkeld, Brian L. Edlow



http://bit.ly/2MIuyV0

Antecedents of satisfaction and engagement of low-carbon bicycle-sharing using in China

Abstract

Transport sector contributed numerous carbon emissions in China. It is important to promote low-carbon bicycle-sharing using in China. This paper aims to analyze the influencing factors of the satisfaction and engagement of bicycle-sharing in China. An extended model of customer satisfaction is established, which considers both customer satisfaction theory and customer engagement theory. We explore the different effect of convenience, health, safety, and facility on satisfaction of bicycle-sharing using. We also explore the role of satisfaction on three different dimensions of engagement: enthusiasm, participation, and social interaction. Multi-group structure equation model is employed to explore the different roles of gender on the determinants of satisfaction and engagement of bicycle-sharing using. The findings reveal that facilities had the larger effect on satisfaction of bicycle-sharing using than safety and health for male. Safety had the largest influence on satisfaction of bicycle-sharing using for female, followed by facility, convenience, and health.



http://bit.ly/2DM58mw

Assessment of swimming behavior of the Pacific oyster D-larvae ( Crassostrea gigas ) following exposure to model pollutants

Abstract

This study describes an image analysis method that has been used to analyze the swimming behavior of native oyster D-larvae (Crassostrea gigas) from the Arcachon Bay (SW, France). In a second time, this study evaluated the impact of copper and S-metolachlor pollutants on D-larvae swimming activity and the possible relationship between developmental malformations and abnormal swimming behavior. Analyses in wild and cultivated oyster D-larvae were investigated during two breeding-seasons (2014 and 2015) at different sampling sites and dates. In controlled conditions, the average speed of larvae was 144 μm s−1 and the maximum speed was 297 μm s−1 while the trajectory is mainly rectilinear. In the presence of environmental concentration of copper or S-metolachlor, no significant difference in maximum or average larval speed was observed compared to the control condition but the percentage of circular trajectory increased significantly while the rectilinear swimming larvae significantly declined. The current study demonstrates that rectilinear trajectories are positively correlated to normal larvae while larvae with shell anomalies are positively correlated to circular trajectories. This abnormal behavior could affect the survival and spread of larvae, and consequently, the recruitment and colonization of new habitats.



http://bit.ly/2UrCqgc

Using gauze to evenly spread starch for hyperhidrosis testing

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Mohammed I. AlJasser



http://bit.ly/2MFPRql

Risk factors for acne development in the first 2 years after initiating masculinizing testosterone therapy among transgender men

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Jason Andrew Park, Erin Elizabeth Carter, Allison Ruth Larson



http://bit.ly/2sWbJEH

Severe Rhinophyma. Tips and Tricks in Carbon Dioxide Laser Decortication

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Álvaro Iglesias-Puzas, Claudia Olmos-Nieva, Manuel Ángel Rodríguez-Prieto



http://bit.ly/2MIuDrM

Patients Believe Cosmetic Procedures Affect Their Quality of Life: An Interview Study of Patient-Reported Motivations

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Abigail Waldman, Amanda Maisel, Alexandra Weil, Sanjana Iyengar, Kaitlyn Sacotte, Jake M. Lazaroff, Sasha Kurumety, Sara L. Shaunfield, Kelly A. Reynolds, Emily Poon, June K. Robinson, Murad Alam

Abstract
Background

While treatments to address cosmetic concerns are common, patients' self-reported motives for considering such procedures have not been systematically explored.

Objective

To develop a framework of categories to describe patient's self-reported motivations for undergoing minimally invasive cosmetic procedures.

Methods

Face-to-face, semi-structured patient interviews were conducted with adult participants who had received or were considering minimally invasive cosmetic dermatologic procedures. A qualitative constant comparative approach was employed to analyze interview transcripts, yielding themes and subthemes.

Results

30 interviews were completed. Most patient-reported motivations for cosmetic procedures could be subsumed under eight general categories (themes): 1) mental and emotional health, 2) cosmetic appearance, 3) physical health, 4) work/school success, 5) social well-being, 6) cost/convenience, 7) procedural perceptions, and 8) timing of treatment. Many individual motivations in these categories were unrelated to desire for physical beauty. In particular, participants wanted to avoid being self-conscious, enhance confidence, reduce time and expense required to conceal physical imperfections, and be perceived as capable at work.

Limitations

Only English-speaking patients in the U.S. were interviewed.

Conclusion

Patient-reported motivations for cosmetic procedures mostly pertained to physical and psychosocial well-being. Indeed, a desire for improved cosmetic appearance comprised only one of the 8 themes revealed through patient interviews.



http://bit.ly/2t6ii7X

The Etiology, Diagnosis and Management of Hyperhidrosis: A Comprehensive Review. Part II. Therapeutic Options

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Shiri Nawrocki, Jisun Cha

Abstract

Hyperhidrosis (HH) is a chronic disorder of excess sweat production that may have a significant adverse effect on quality of life. A variety of treatment modalities currently exist to manage HH. Initial treatment includes lifestyle and behavioral recommendations. Antiperspirants are regarded as the first-line therapy for primary focal HH and can provide significant benefit. Iontophoresis is considered to be the primary remedy for palmar and plantar HH. Botulinum toxin (BTX) injections are administered at the dermal-subcutaneous junction and serve as a safe and effective treatment option for focal HH. Oral systemic agents are reserved for treatment-resistant cases or for generalized HH. Energy delivering devices such as lasers, ultrasound technology, microwave thermolysis, and fractional microneedle radiofrequency may also be utilized to reduce focal sweating. Surgery may be considered when more conservative treatments have failed. Local surgical techniques, particularly for axillary HH, include excision, curettage, liposuction, or a combination of these techniques. Sympathectomy is the treatment of last resort when conservative treatments are unsuccessful or intolerable, and after accepting secondary compensatory HH as a potential complication. A review of treatment modalities for HH and a sequenced approach are presented.



http://bit.ly/2MIaYs7

Tissue-sparing properties of Mohs micrographic surgery for infiltrative basal cell carcinoma

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Marloes S. van Kester, Jelle J. Goeman, Roel E. Genders

Abstract
Background

Mohs micrographic surgery (MMS) should lead to tissue sparing of healthy skin compared to standard surgical excision, because smaller surgical margins are used.

Objective

To quantify the tissue-sparing properties of MMS in primary basal cell carcinoma (BCC) with an infiltrative growth pattern.

Methods

A prospective study including 256 primary BCC with an infiltrative growth pattern was performed. Tumor sizes were measured in two perpendicular directions. Surface defect areas after MMS were measured. The suspected defect surface area with standard excision using a 5 mm margin was calculated. The primary outcome of this study was the size of the defect surface area spared with MMS compared to the calculated defect surface area with a standard excision.

Results

Median tumor size was 71 mm2, median defect size after MMS was 154 mm2. Median defect size calculated for standard surgical excision was 298 mm2.

We show that MMS had a 46.4% tissue sparing effect compared to standard surgical excision of BCC with an infiltrative growth pattern (confidence interval 43.4-49.1.4%, p-value <0.001).

Limitations

Single-center study design. Lack of randomized control group, due to ethical reasons.

Conclusion

46% tissue sparing can be reached for primary BCC with an infiltrative growth pattern using MMS.



http://bit.ly/2sZ5Nux

Topical rapamycin in superficial lymphatic malformation: microcystic lymphatic malformation or verrucous venous malformation?

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Dr Ren Cai, Dr Hao Gu, Zhang Yu, Dr Xi Yang, Dr Hui Chen, Dr Xiaoxi Lin



http://bit.ly/2MMeaTy

The Etiology, Diagnosis and Management of Hyperhidrosis: A Comprehensive Review. Part I. Etiology and Clinical Work-Up

Publication date: Available online 31 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): Shiri Nawrocki, Jisun Cha

Abstract

Hyperhidrosis (HH) is a dermatologic disorder defined by sweat production beyond the thermoregulatory requirements. Clinically, HH is diagnosed when excess sweating creates significant emotional, physical, or social discomfort, causing negative impact on the patient's quality of life. Existing data imply that this condition may affect at least 4.8% of the US population. The etiology of HH may stem from autonomic nervous system complex dysfunction, resulting in neurogenic overactivity of otherwise normal eccrine sweat glands. Alternatively, HH may be a result of aberrant central control of emotions. This condition is categorized as primary or secondary HH. Approximately 93% of patients with HH have primary HH, of whom >90% have a typical focal and bilateral distribution affecting the axillae, palms, soles, and craniofacial areas. Secondary HH presents in a more generalized and asymmetric distribution and is generated by various underlying diseases or medications. Secondary causes of HH need to be excluded prior to diagnosing primary HH.



http://bit.ly/2sZDV9U

Pityriasis Rubra Pilaris: A Study Evaluating Patient Quality of Life in Two Populations

Publication date: Available online 30 January 2019

Source: Journal of the American Academy of Dermatology

Author(s): A.Brooke Eastham, Elizabeth Y. Tkachenko, Alisa N. Femia, Lisa K. Pappas-Taffer, Misha Rosenbach, Cara J. Joyce, Stephanie Liu, Ruth Ann Vleugels



http://bit.ly/2MIuBAa

The Dynamic Associations Between Cortical Thickness and General Intelligence are Genetically Mediated

Abstract
The neural substrates of intelligence represent a fundamental but largely uncharted topic in human developmental neuroscience. Prior neuroimaging studies have identified modest but highly dynamic associations between intelligence and cortical thickness (CT) in childhood and adolescence. In a separate thread of research, quantitative genetic studies have repeatedly demonstrated that most measures of intelligence are highly heritable, as are many brain regions associated with intelligence. In the current study, we integrate these 2 streams of prior work by examining the genetic contributions to CT–intelligence relationships using a genetically informative longitudinal sample of 813 typically developing youth, imaged with high-resolution MRI and assessed with Wechsler Intelligence Scales (IQ). In addition to replicating the phenotypic association between multimodal association cortex and language centers with IQ, we find that CT–IQ covariance is nearly entirely genetically mediated. Moreover, shared genetic factors drive the rapidly evolving landscape of CT–IQ relationships in the developing brain.

http://bit.ly/2RtLvDd

Alterations in Oscillatory Behavior of Central Medial Thalamic Neurons Demonstrate a Key Role of CaV3.1 Isoform of T-Channels During Isoflurane-Induced Anesthesia

Abstract
Although the central medial nucleus (CeM) of the thalamus is an essential part of the arousal system for sleep and anesthesia initiation, the precise mechanisms that regulate its activity are not well studied. We examined the role of CaV3.1 isoform of T-type calcium channels (T-channels) in the excitability and rhythmic activity of CeM neurons during isoflurane (ISO)-induced anesthesia by using mouse genetics and selective pharmacology. Patch-clamp recordings taken from acute brain slices revealed that CaV3.1 channels in CeM are inhibited by prototypical volatile anesthetic ISO (250 and 500 μM) and selective T-channels blocker 3,5-dichloro-N-[1-(2,2-dimethyl-tetrahydro-pyran-4-ylmethyl)-4-fluoro-piperidin-4-ylmethyl]-benzamide (TTA-P2). Both TTA-P2 and ISO attenuated tonic and burst firing modes, and hyperpolarized CeM neurons from wild type (WT) mice. These effects were greatly diminished or abolished in CaV3.1 null mice. Our ensuing in vivo local field potential (LFP) recordings from CeM indicated that the ability of TTA-P2 and anesthetic concentrations of ISO to promote δ oscillation was substantially weakened in CaV3.1 null mice. Furthermore, escalating ISO concentrations induced stronger burst-suppression LFP pattern in mutant than in WT mice. Our results demonstrate for the first time the importance of CaV3.1 channels in thalamocortical oscillations from the non-specific thalamic nuclei that underlie clinically important effects of ISO.

http://bit.ly/2WvblL0

Objective Morphological Classification of Neocortical Pyramidal Cells

Abstract
A consensus on the number of morphologically different types of pyramidal cells (PCs) in the neocortex has not yet been reached, despite over a century of anatomical studies, due to the lack of agreement on the subjective classifications of neuron types, which is based on expert analyses of neuronal morphologies. Even for neurons that are visually distinguishable, there is no common ground to consistently define morphological types. The objective classification of PCs can be achieved with methods from algebraic topology, and the dendritic arborization is sufficient for the reliable identification of distinct types of cortical PCs. Therefore, we objectively identify 17 types of PCs in the rat somatosensory cortex. In addition, we provide a solution to the challenging problem of whether 2 similar neurons belong to different types or to a continuum of the same type. Our topological classification does not require expert input, is stable, and helps settle the long-standing debate on whether cell-types are discrete or continuous morphological variations of each other.

http://bit.ly/2RtLlM7

Distinctive Interaction Between Cognitive Networks and the Visual Cortex in Early Blind Individuals

Abstract
In early blind individuals, brain activation by a variety of nonperceptual cognitive tasks extends to the visual cortex, while in the sighted it is restricted to supramodal association areas. We hypothesized that such activation results from the integration of different sectors of the visual cortex into typical task-dependent networks. We tested this hypothesis with fMRI in blind and sighted subjects using tasks assessing speech comprehension, incidental long-term memory and both verbal and nonverbal executive control, in addition to collecting resting-state data. All tasks activated the visual cortex in blind relative to sighted subjects, which enabled its segmentation according to task sensitivity. We then assessed the unique brain-scale functional connectivity of the segmented areas during resting state. Language-related seeds were preferentially connected to frontal and temporal language areas; the seed derived from the executive task was connected to the right dorsal frontoparietal executive network; and the memory-related seed was uniquely connected to mesial frontoparietal areas involved in episodic memory retrieval. Thus, using a broad set of language, executive, and memory tasks in the same subjects, combined with resting state connectivity, we demonstrate the selective integration of different patches of the visual cortex into brain-scale networks with distinct localization, lateralization, and functional roles.

http://bit.ly/2Wx1mVB

Functional Alteration of Cerebello–Cerebral Coupling in an Experimental Mouse Model of Parkinson’s Disease

Abstract
In Parkinson's disease, the degeneration of the midbrain dopaminergic neurons is consistently associated with modified metabolic activity in the cerebellum. Here we examined the functional reorganization taking place in the cerebello–cerebral circuit in a murine model of Parkinson's disease with 6-OHDA lesion of midbrain dopaminergic neurons. Cerebellar optogenetic stimulations evoked similar movements in control and lesioned mice, suggesting a normal coupling of cerebellum to the motor effectors after the lesion. In freely moving animals, the firing rate in the primary motor cortex was decreased after the lesion, while cerebellar nuclei neurons showed an increased firing rate. This increase may result from reduced inhibitory Purkinje cells inputs, since a population of slow and irregular Purkinje cells was observed in the cerebellar hemispheres of lesioned animals. Moreover, cerebellar stimulations generated smaller electrocortical responses in the motor cortex of lesioned animals suggesting a weaker cerebello–cerebral coupling. Overall these results indicate the presence of functional changes in the cerebello–cerebral circuit, but their ability to correct cortical dysfunction may be limited due to functional uncoupling between the cerebellum and cerebral cortex.

http://bit.ly/2RtLbnZ

Regional Specialization of Pyramidal Neuron Morphology and Physiology in the Tree Shrew Neocortex

Abstract
The mammalian cerebral cortex is divided into different areas according to their function and pattern of connections. Studies comparing primary visual (V1) and prefrontal cortex (PFC) of primates have demonstrated striking pyramidal neuron (PN) specialization not present in comparable areas of the mouse neocortex. To better understand PFC evolution and regional PN specialization, we studied the tree shrew, a species with a close phylogenetic relationship to primates. We defined the tree shrew PFC based on cytoarchitectonic borders, thalamic connectivity and characterized the morphology and electrophysiology of layer II/III PNs in V1 and PFC. Similar to primates, the PFC PNs in the tree shrew fire with a regular spiking pattern and have larger dendritic tree and spines than those in V1. However, V1 PNs showed strikingly large basal dendritic arbors with high spine density, firing at higher rates and in a more varied pattern than PFC PNs. Yet, unlike in the mouse and unreported in the primate, medial prefrontal PN are more easily recruited than either the dorsolateral or V1 neurons. This specialization of PN morphology and physiology is likely to be a significant factor in the evolution of cortex, contributing to differences in the computational capacities of individual cortical areas.

http://bit.ly/2Wx1a8P

Thyroid function in patients with Prader-Willi syndrome: an Italian multicenter study of 339 patients

Journal Name: Journal of Pediatric Endocrinology and Metabolism
Issue: Ahead of print


http://bit.ly/2Utm32E

Effects of biochar addition on the NEE and soil organic carbon content of paddy fields under water-saving irrigation

Abstract

The addition of biochar has been reported as a strategy for improving soil fertility, crop productivity, and carbon sequestration. However, information regarding the effects of biochar on the carbon cycle in paddy fields under water-saving irrigation remains limited. Thus, a field experiment was conducted to investigate the effects of biochar addition on the net ecosystem exchange (NEE) of CO2 and soil organic carbon (SOC) content of paddy fields under water-saving irrigation in the Taihu Lake region of China. Four treatments were applied: controlled irrigation (CI) without biochar addition as the control (CA), CI with biochar addition at a rate of 20 t·ha−1 (CB), CI with biochar addition at a rate of 40 t·ha−1 (CC), and flooding irrigation (FI) with biochar addition at a rate of 40 t·ha−1 (FC). Biochar addition increased rice yield and irrigation water use efficiency (IWUE) by 24.0–36.3 and 33.4–42.5%, respectively, compared with the control. In addition, biochar addition increased the NEE of CI paddy fields. The average NEE of paddy fields under CB and CC was 2.41 and 30.6% higher than that under CA, respectively. Thus, the increasing effect of biochar addition at a rate of 40 t·ha−1 was considerably better than those of the other treatments. Apart from biochar addition, irrigation mode was also identified as an influencing factor. CI management increased the NEE of paddy fields by 17.6% compared with FI management. Compared with CA, CB increased total net CO2 absorption by 10.0%, whereas CC decreased total net CO2 absorption by 13.8%. Biochar addition also increased SOC, dissolved organic carbon, and microbial biomass carbon contents. Therefore, the joint regulation of biochar addition and water-saving irrigation is a good technique for maintaining rice yield, increasing IWUE, and promoting soil fertility. Furthermore, when amended at the rate of 20 t·ha−1, biochar addition will be a good strategy for sequestering carbon in paddy fields.



http://bit.ly/2FY2e0l

An Institutional Experience of Tumor Progression to Pituitary Carcinoma in a 15-Year Cohort of 1055 Consecutive Pituitary Neuroendocrine Tumors

Abstract

Pituitary carcinoma is a rare disease, defined by the presence of cerebrospinal or distant metastasis of a pituitary neuroendocrine tumor (PitNET). To review our institutional experience of pituitary carcinoma, we searched the database of the UHN Endocrine Oncology Site group and the University Health Network pathology laboratory information system from 2001 to 2016. Among 1055 PitNETs from 1169 transsphenoidal resections, we identified 4 cases of pituitary carcinoma, indicating that pituitary carcinoma represents around 0.4% of PitNETs. All four patients were women. The age at initial presentation ranged from 23 to 54 years. Two patients had Cushing disease with corticotroph tumors; one was initially a densely granulated corticotroph tumor that evolved to become sparsely granulated, while the other was a Crooke cell tumor. One patient had a functioning sparsely granulated lactotroph tumor and one had a clinically silent poorly differentiated PIT1 lineage tumor. Apart from a relatively high Ki67 labeling index (≥ 10%) in three tumors, there were no cytomorphologic features at the time of initial presentation that could predict subsequent metastatic behavior. The time from diagnosis of the pituitary neuroendocrine tumor to the diagnosis of malignancy was 3 to 14 years. Therapies included somatostatin analogs, external beam radiotherapy, chemotherapies including capecitabine/temozolomide, everolimus, sunitinib, bevacizumab, and peptide receptor radionuclide therapy (PRRT). One patient died of disease 18 years after initial diagnosis, underscoring the protracted course of this ultimately fatal neuroendocrine malignancy.



http://bit.ly/2RqTa5u

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