Journal Name: Journal of Pediatric Endocrinology and Metabolism
Issue: Ahead of print
https://ift.tt/2B4oVhI
Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,
Ετικέτες
Σάββατο 11 Αυγούστου 2018
A personal series of 100 children operated for Cushing’s disease (CD): optimizing minimally invasive diagnosis and transnasal surgery to achieve nearly 100% remission including reoperations
Tetrathiomolybdate, a copper chelator inhibited imiquimod-induced skin inflammation in mice
Publication date: Available online 11 August 2018
Source: Journal of Dermatological Science
Author(s): Peng-Yang Hsu, Hsu-Heng Yen, Tao-Hsiang Yang, Che-Chun Su
Abstract
Background
Copper is an essential metal for maintenance of many biological functions; however, excessive amount can induce inflammation and oxidative stress. Tetrathiomolybdate (TM) is a copper chelator for treatment of Wilson's disease, and decreased the severity of autoimmune arthritis in mice.
Objective
In this report, we evaluated the effects of TM in a mouse model for psoriasis.
Methods
Imiquimod-induced psoriasis murine model was used. We applied immunohistochemistry staining and ELISA to determine levels of cytokines in the inflamed skin, splenocytes, and draining lymph nodes. In addition, we used keratinocytes and splenocytes to test the inhibitory effects of TM on cytokine production and activation of transcription factors.
Results
Our results showed that TM significantly reduced cumulative scores, epidermis thickness, and ki-67 expression in the inflamed skin. In addition, TM decreased skin cytokine levels and systemic inflammation. Moreover, TM suppressed activation in keratinocytes and splenocytes with reduction in phosphorylation of Erk1/2 and STAT3.
Conclusion
These findings are strong evidence that TM can inhibit psoriasis in the model.
https://ift.tt/2MjT9S7
Uptake and accumulation of polycyclic aromatic hydrocarbons in the mangroves Avicennia marina and Rhizophora mucronata
Abstract
This study investigated the uptake and accumulation of polycyclic aromatic hydrocarbons (PAHs) in two mangrove species, Avicennia marina and Rhizophora mucronata. We tested the hypothesis that A. marina would absorb and accumulate more PAHs than R. mucronata. One-year old seedlings of both species were subjected to Bunker Fuel Oil 180 for 3 weeks, and the concentration of PAHs was analyzed by gas chromatography-mass spectrometry (GC/MS). The concentration of PAHs was significantly higher in A. marina than in R. mucronata. The major portion of the PAH pool was in roots (96% in A. marina, 98% in R. mucronata) compared to leaves. The dominant PAHs in roots of both species possessed two to three rings and included phenanthrene, anthracene, fluorene, and acenaphthene. In shoots, PAHs in A. marina included phenanthrene, chrysene, anthracene, acenaphthene, benzo[k+b]fluoranthene, pyrene, benzo[a] anthracene, and benzo[a] pyrene, while those in R. mucronata included phenanthrene, naphthalene, fluoranthene, fluorene, and acenaphthene. Phenanthrene was the dominant PAH in roots and shoots of both species. The greater susceptibility of A. marina appears to be due to its greater root length and specific root length, which permit more exposure to oil than R. mucronata. Other contributory factors include root anatomical characteristics such as larger air spaces, lower suberization of root epidermal cells, lower concentrations of polyphenols, tannins, lignin, and a less efficient antioxidative system. This study provides novel information on differences in the uptake and accumulation of PAHs in two contrasting mangrove species.
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Altered topology of the functional speech production network in non-fluent/agrammatic variant of PPA
Publication date: Available online 11 August 2018
Source: Cortex
Author(s): M.L. Mandelli, E. Vilaplana, A.E. Welch, C. Watson, G. Battistella, J.A. Brown, K.L. Possin, H.I. Hubbard, Z.A. Miller, M.L. Henry, G.A. Marx, M.A. Santos-Santos, L.P. Bajorek, J. Fortea, A. Boxer, G. Rabinovici, S. Lee, J. Deleon, H.J. Rosen, B.L. Miller
Abstract
Non-fluent/agrammatic primary progressive aphasia (nfvPPA) is caused by neurodegeneration within the left fronto-insular speech and language production network (SPN). Graph theory is a branch of vmathematics that studies the network architecture (topology) by quantifying features based on its elements (nodes and connections). This approach has been recently applied to neuroimaging data to explore the complex architecture of the brain connectome, though few studies exploited this technique in PPA. Here, we used graph theory on functional MRI resting state data of a group of 20 nfvPPA patients and 20 matched controls to investigate topological changes in response to focal neurodegeneration. We hypothesized that changes in the network architecture would be specific to the affected SPN in nfvPPA, while preserved in the spared default mode network (DMN). Topological configuration was quantified by hubs' location and global network's metrics. Our findings showed a less efficiently wired and less optimally clustered SPN, while no changes were detected in the DMN. The SPN in the nfvPPA group showed a loss of hubs in the left fronto-parietal-temporal area and new critical nodes in the anterior left inferior-frontal and right frontal regions. Behaviorally, speech production score and rule violation errors correlated with the strength of functional connectivity of the left (lost) and right (new) regions respectively. This study shows that focal neurodegeneration within the SPN in nfvPPA is associated with network-specific topological alterations, with loss and gain of crucial hubs and decreased global efficiency that were better accounted for by functional rather than structural changes. These findings support the hypothesis of selective network vulnerability in nfvPPA and may offer biomarkers for future behavioral intervention.
https://ift.tt/2vXgxuF
Monogenic polyautoimmunity in primary immunodeficiency diseases
Publication date: Available online 11 August 2018
Source: Autoimmunity Reviews
Author(s): Gholamreza Azizi, Reza Yazdani, Wiliam Rae, Hassan Abolhassani, Manuel Rojas, Asghar Aghamohammadi, Juan-Manuel Anaya
Abstract
Primary immunodeficiency diseases (PIDs) consist of a large group of genetic disorders that affect distinct components of the immune system. PID patients are susceptible to infection and non-infectious complications, particularly autoimmunity. A specific group of monogenic PIDs are due to mutations in genes that are critical for the regulation of immunological tolerance and immune responses. This group of monogenic PIDs is at high risk of developing polyautoimmunity (i.e., the presence of more than one autoimmune disease in a single patient) because of their impaired immunity. In this review, we discuss the mechanisms of autoimmunity in PIDs and the characteristics of polyautoimmunity in the following PIDs: IPEX; monogenic IPEX-like syndrome; LRBA deficiency; CTLA4 deficiency; APECED; ALPS; and PKCδ deficiency.
https://ift.tt/2B2UIj5
The link between immunity, autoimmunity and endometriosis: a literature update
Publication date: Available online 11 August 2018
Source: Autoimmunity Reviews
Author(s): Tao Zhang, Caterina De Carolis, Man Gene Chi-Wai, Chi-Chiu Wang
Abstract
Endometriosis (EMS), an estrogen-dependent inflammatory disorder affects approximately 5–10% of the general female population of reproductive age and 20–90% of women with pelvic pain and infertility. Many immunological factors are known to contribute significantly to the pathogenesis and pathophysiology of EMS, and both chronic local inflammation and autoantibodies in EMS shares many similarities with autoimmune diseases (AD). However, the autoimmune etiology in EMS remains controversial, and its evidence on autoimmune basis may be limited. Here we aim to review the current understanding between autoimmunity and EMS to provide important knowledge to develop future potential immunomodulatory therapy for the treatment of EMS.
https://ift.tt/2P2n283
Negative-pressure wound therapy for management of chronic neuropathic noninfected diabetic foot ulcerations – short-term efficacy and long-term outcomes
Abstract
Purpose
Negative pressure wound therapy (NPWT) is an adjunct method used in the treatment of diabetic foot ulceration (DFU). Real world data on its effectiveness and safety is scarce. In this prospective observational study, we assessed the short-term efficacy, safety, and long-term outcomes of NPWT in patients with type 2 diabetes (T2DM) and neuropathic, noninfected DFUs.
Methods
Based on wound characteristics, mainly area (>1 vs. ≤1 cm2), 75 patients with DFUs treated in an outpatient clinic were assigned to NPWT (n = 53) or standard therapy (n = 22). Wound area reduction was evaluated after 8 ± 1 days. Long-term outcomes assessed included complete ulceration closure and recurrence rate.
Results
Patients assigned to NPWT were characterized by greater wound area (15.7 vs. 2.9 cm2). Reduction in wound area was found in both the NPWT (−1.1 cm2, −10.2%, p = 0.0001) and comparator group (−0.3 cm2, −18.0%, p = 0.0038). No serious adverse events related to NPWT were noted. Within 1 year, 55.1% (27/49) of DFUs were closed in the NPWT group and 73.7% (14/19) in the comparator group (p = 0.15). In the logistic regression, wound duration and smaller initial area, but not treatment mode, were associated with closure. One-year follow-up after DFU resolution revealed an ~30.0% recurrence rate in both groups (p = 0.88).
Conclusions
NPWT is a safe treatment for neuropathic, nonischemic, and noninfected DFU in patients with T2DM, although this observational study did not prove its effectiveness over standard therapy. Additionally, we report a high rate of both closure and recurrence of ulcers, the latter irrespective of initial ulcer area.
https://ift.tt/2OuhUIY
Paraneoplastic autoimmune multiorgan syndrome (PAMS): Beyond the single phenotype of paraneoplastic pemphigus
Publication date: Available online 11 August 2018
Source: Autoimmunity Reviews
Author(s): Kyle T. Amber, Manuel Valdebran, Sergei A. Grando
Abstract
Paraneoplastic autoimmune multiorgan syndrome (PAMS) is characterized by a heterogenous group of signs and symptoms including severe desquamative stomatitis, a polymorphous cutaneous eruption, humoral immunity against plakin proteins, contribution of cell-mediated autoimmunity and commonly a progressive respiratory failure. Autoantibodies in PAMS target a wide array of antigens including plakins, cadherins, alpha-2-macroglobulin like 1 (A2ML1), BP180, plakophilin-3, and several neuromuscular antigens. Originally described as paraneoplastic pemphigus in 1990 due to some of its clinical and immunologic similarities to classic pemphigus (pemphigus vulgaris and pemphigus foliaceus), PAMS is a multiorganopathy with several distinct features from these classic forms of pemphigus. Epidemiologically, PAMS is associated with underlying neoplasia and has a differing HLA-II allele predisposition compared to classic forms of pemphigus. Clinically, lesion morphology is polymorphous, and lesion distribution fundamentally differs from that seen in classic pemphigus. PAMS has a significantly higher mortality rate and a poorer response to treatments typically effective in pemphigus. Histologically, PAMS is characterized by the presence of interface dermatitis, vacuolar changes, and dyskeratotic keratinocytes which are not seen in classic pemphigus. PAMS demonstrates not only intercellular IgG as seen in classic pemphigus, but the presence of linear basement membrane zone deposition. Antibodies against desmoglein 3 (Dsg3) map to a broader array of epitopes than in pemphigus vulgaris and there is a higher prevalence of complement binding anti-Dsg3 IgG autoantibodies in PAMS. Autoantibodies can in rare cases be absent in the more cell-mediated form of PAMS. Considering these numerable differences, we review the entity of PAMS, and provide similarities and differences to classic forms of pemphigus.
https://ift.tt/2P1JAWP
Recommendations and barriers to vaccination in systemic lupus erythematosus
Publication date: Available online 11 August 2018
Source: Autoimmunity Reviews
Author(s): Megha Garg, Naaima Mufti, Tara Palmore, Sarfaraz Hasni
Abstract
Patients with Systemic Lupus Erythematosus (SLE) pose a unique dilemma pertaining to immunization against common pathogens. SLE patients are usually not immunized with vaccines based on the fear of either precipitating infection in this immunosuppressed patient population (with live vaccines) or aggravating autoimmunity and hence lupus flares (with any vaccines). However, elevated vulnerability to infection makes patients with SLE precisely the population that needs protection from vaccine-preventable diseases. A summary of guidelines from the Centers for Disease Control and Prevention, professional societies, review articles and expert opinions regarding use of individual vaccines applicable to adults with SLE is presented in this review.
https://ift.tt/2KK14nc
Increased risk of thrombosis in antiphospholipid syndrome patients treated with direct oral anticoagulants. Results from an international patient-level data meta-analysis
Publication date: Available online 11 August 2018
Source: Autoimmunity Reviews
Author(s): Virginie DUFROST, Jessie RISSE, Tatiana RESHETNYAK, Maria SATYBALDYEVA, D.U. Yao, Xin-xin YAN, Stella SALTA, Grigorios GEROTZIAFAS, Zhi-Cheng JING, Ismaël ELALAMY, Denis WAHL, Stéphane ZUILY
Abstract
Background: Direct oral anticoagulants (DOACs) are widely used for secondary prevention of venous thromboembolism (VTE) but their clinical efficacy and safety are not established in Antiphospholipid Syndrome (APS) patients. There is only one randomized controlled trial published while others are still ongoing. Many non-randomized studies have been published in this field with conflicting opinions.
Purpose of review: We conducted a systematic review using MEDLINE, EMBASE and Cochrane databases from 2000 until March 2018 regarding APS patients treated with DOACs. We performed a patient-level data meta-analysis to a) estimate the prevalence of recurrent thrombosis in APS patients treated with DOACs in the literature, and b) identify variables associated with recurrent thrombosis.
Results: We identified 47 studies corresponding to 447 APS patients treated with DOACs. Three commercially available DOACs were analyzed: rivaroxaban (n = 290), dabigatran etexilate (n = 144) and apixaban (n = 13). A total of 73 out of 447 patients (16%) experienced a recurrent thrombosis while on DOACs with a mean duration until thrombosis of 12.5 months. Rates of recurrent thromboses were 16.9% and 15% in APS patients receiving either anti-Xa inhibitors or dabigatran respectively. Triple positivity (positivity for all three antiphospholipid antibodies) was associated with a four-fold increased risk of recurrent thrombosis (56% vs 23%; OR = 4.3 [95%CI; 2.3–7.7], p < .0001) as well as a higher number of clinical criteria for APS classification. In patients treated with anti-Xa inhibitors, history of arterial thrombosis was associated with a higher risk of recurrent thrombosis (32% vs 14%; OR = 2.8 [95%CI; 1.4–5.7], p = .006).
In conclusion, DOACs are not effective in all APS patients and should not be used routinely in these patients. Randomized controlled trials assessing clinical efficacy and safety as primary endpoints are underway. In the meantime, a registry of APS patients on DOACs could be proposed to establish in which APS subgroups DOACs would be a safe alternative to warfarin.
Graphical abstract
https://ift.tt/2OU8HL3
Negative-pressure wound therapy for management of chronic neuropathic noninfected diabetic foot ulcerations – short-term efficacy and long-term outcomes
Abstract
Purpose
Negative pressure wound therapy (NPWT) is an adjunct method used in the treatment of diabetic foot ulceration (DFU). Real world data on its effectiveness and safety is scarce. In this prospective observational study, we assessed the short-term efficacy, safety, and long-term outcomes of NPWT in patients with type 2 diabetes (T2DM) and neuropathic, noninfected DFUs.
Methods
Based on wound characteristics, mainly area (>1 vs. ≤1 cm2), 75 patients with DFUs treated in an outpatient clinic were assigned to NPWT (n = 53) or standard therapy (n = 22). Wound area reduction was evaluated after 8 ± 1 days. Long-term outcomes assessed included complete ulceration closure and recurrence rate.
Results
Patients assigned to NPWT were characterized by greater wound area (15.7 vs. 2.9 cm2). Reduction in wound area was found in both the NPWT (−1.1 cm2, −10.2%, p = 0.0001) and comparator group (−0.3 cm2, −18.0%, p = 0.0038). No serious adverse events related to NPWT were noted. Within 1 year, 55.1% (27/49) of DFUs were closed in the NPWT group and 73.7% (14/19) in the comparator group (p = 0.15). In the logistic regression, wound duration and smaller initial area, but not treatment mode, were associated with closure. One-year follow-up after DFU resolution revealed an ~30.0% recurrence rate in both groups (p = 0.88).
Conclusions
NPWT is a safe treatment for neuropathic, nonischemic, and noninfected DFU in patients with T2DM, although this observational study did not prove its effectiveness over standard therapy. Additionally, we report a high rate of both closure and recurrence of ulcers, the latter irrespective of initial ulcer area.
https://ift.tt/2OuhUIY
Scholar : Autophagy, Volume 14, Issue 7, 2018 is now available online on Taylor & Francis Online
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Oxyhemoglobin Resaturation following Obstructive Breathing Events Mitigates Sleep Apnea-Induced Glucose Elevations
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