Publication date: July 2018
Source:European Journal of Cancer, Volume 97
Author(s): T. Aparicio, O. Bouché, E. Francois, F. Retornaz, E. Barbier, J. Taieb, S. Kirscher, P.-L. Etienne, R. Faroux, F. Khemissa Akouz, F. El Hajbi, C. Locher, Y. Rinaldi, T. Lecomte, S. Lavau-Denes, M. Baconnier, A. Oden-Gangloff, D. Genet, L. Bedenne, E. Paillaud
BackgroundOlder patients have frailty characteristics that impair the transposition of treatment results found in younger patients. Predictive factors are needed to help with treatment choices for older patients. The PRODIGE 20 study is a randomized phase II study that evaluated chemotherapy associated with bevacizumab (BEV) or not (CT) in patients aged 75 years or older.Patients and methodsPatients underwent a geriatric assessment at randomization and at each evaluation. The predictive value of geriatric and oncologic factors was determined for the primary composite end-point assessing safety and efficacy of treatment (BEV or CT) simultaneously and also progression-free survival (PFS) and overall survival (OS).Results102 patients were randomized (51 BEV and 51 CT; median age 80 years [range 75–91]). On multivariate analysis, baseline normal independent activity of daily living (IADL) score and no previous cardiovascular disease predicted the primary end-point. High (versus low) baseline Köhne score predicted short PFS and baseline Spitzer quality of life (QoL) score <8, albumin level ≤35 g/L, CA19.9 >2 LN levels above normal and high baseline Köhne score predicted short OS. Survival without deteriorated QoL and autonomy was similar with BEV and CT. On subgroup analyses, the benefit of bevacizumab seemed to be maintained in patients with baseline impaired IADL or nutritional status.ConclusionNormal IADL score was associated with a good efficacy and safety of both BEV and CT. Köhne criteria may be relevant prognostic factors in older patients. Adding bevacizumab to chemotherapy does not impair patient autonomy or QoL.
https://ift.tt/2wNzbc5
Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,
Ετικέτες
Πέμπτη 17 Μαΐου 2018
Geriatric analysis from PRODIGE 20 randomized phase II trial evaluating bevacizumab + chemotherapy versus chemotherapy alone in older patients with untreated metastatic colorectal cancer
Impact of neoadjuvant chemotherapy and pathological complete response on eligibility for breast-conserving surgery in patients with early breast cancer: A meta-analysis
Publication date: July 2018
Source:European Journal of Cancer, Volume 97
Author(s): Carmen Criscitiello, Mehra Golshan, William T. Barry, Giulia Viale, Stephanie Wong, Michele Santangelo, Giuseppe Curigliano
PurposeWe conducted a meta-analysis of randomised trials evaluating pathological complete response (pCR) and surgical outcomes after neoadjuvant systemic therapy (NST) in patients with early breast cancer (EBC).Patients and methodsThe primary outcome was breast-conserving surgery (BCT) rate. Secondary outcomes were pCR rate and association to BCT. Meta-analyses were performed using random effects models that use inverse-variance weighting for each treatment arm based on evaluable patients. Point estimates are reported with 95% confidence interval (CI), and p < 0.05 was considered statistically significant.ResultsThirty-six studies were identified (N = 12,311 patients). We selected for the analysis 16 of 36 studies reporting both pCR and BCT for at least one treatment arm. Arms per study ranged from one to six; 42 independent units were available to evaluate the association between pCR and BCT. BCT rate ranged 5–76% across arms with an average BCT of 57% (95% CI 52–62%). Significant heterogeneity was observed among the trials (Cochrane Q = 787, p < 0.001, I2 = 97%). In the meta-regression model, BCT rates were not significantly associated with year of first patient-in (p = 0.89), grade (p = 0.93) and hormone-receptor status (p = 0.39). Clinical N-stage (p = 0.01) and human epidermal growth factor receptor (HER2) status (p = 0.03) were significantly associated with BCT. pCR rate ranged 3–60% across studies. The average pCR across all study arms was 24% (95% CI 19–29%). No association was observed between pCR rate in a study arm and the resulting BCT rate in a univariate model (p = 0.34) nor after adjusting for HER2 and clinical nodal status (p = 0.82). In the subset of 14 multi-arm studies, no significant association was seen between the differences in pCR and BCT between treatment arms (p = 0.27).ConclusionspCR does not increase BCT in patients receiving NST for EBC.
https://ift.tt/2IviVSE
International Organization of Psychophysiology
Publication date: June 2018
Source:International Journal of Psychophysiology, Volume 128
https://ift.tt/2Iq2wyB
Editorial Board
Publication date: June 2018
Source:International Journal of Psychophysiology, Volume 128
https://ift.tt/2KBL1b5
Kasuistik: Metamizol-induzierte Agranulozytose
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 388-394
DOI: 10.1055/s-0043-115329
Metamizol hat insgesamt ein günstiges Nebenwirkungsprofil – aber es birgt ein höheres Risiko einer medikamenteninduzierten Agranulozytose als andere Schmerzmittel und darf daher nicht unkritisch eingesetzt werden. Dieser Beitrag berichtet von einem Patienten, der nach prothetischem Hüftersatz eine medikamenteninduzierte Agranulozytose – mutmaßlich durch Metamizol – entwickelt und trotz maximaler Therapie im septischen Schock verstirbt.
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Georg Thieme Verlag KG Stuttgart · New York
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Kardioanästhesie: Monitoring der Gerinnung und Gerinnungstherapie
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 364-379
DOI: 10.1055/s-0043-112099
Die Transfusion von allogenen Blutprodukten ist mit einer Erhöhung der perioperativen Morbidität und Letalität assoziiert. Störungen der Hämostase sind insbesondere bei kardiochirurgischen Patienten häufig anzutreffen und können zu transfusionspflichtigen Blutungen führen. Eine zielgerichtete Therapie der häufig komplexen Gerinnungsstörungen erfordert eine differenzierte Diagnostik.
[...]
Georg Thieme Verlag KG Stuttgart · New York
Article in Thieme eJournals:
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Kolloide zur Volumentherapie nach Verbrennung geeignet?
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 324-324
DOI: 10.1055/a-0607-6170
Georg Thieme Verlag KG Stuttgart · New York
Article in Thieme eJournals:
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Hypertone Lösungen bei hämorrhagischem Schock ohne gesicherten Vorteil
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 327-328
DOI: 10.1055/a-0607-6183
Georg Thieme Verlag KG Stuttgart · New York
Article in Thieme eJournals:
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Kardioanästhesie: anästhesiologisches Management
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 346-362
DOI: 10.1055/s-0043-106337
Das anästhesiologische Management herzchirurgischer Patienten hat sich in den letzten Jahren deutlich weiterentwickelt. Diese Übersicht widmet sich vor allem folgenden Bereichen: pharmakologische Kardioprotektion bei herzchirurgischen Eingriffen, Narkosemanagement an der Herz-Lungen-Maschine, Protokolle der „Enhanced Recovery After Cardiac Surgery" sowie innovative minimalinvasive Operationsverfahren wie die kathetergestützte Aortenklappenimplantation.
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Georg Thieme Verlag KG Stuttgart · New York
Article in Thieme eJournals:
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Hypotonie nach Spinalanästhesie zur Sectio: Noradrenalin oder Phenylephrin?
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 328-328
DOI: 10.1055/a-0607-6144
Georg Thieme Verlag KG Stuttgart · New York
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Obere Altersgrenze bei ambulanter Anästhesie: Möglichkeiten und Risiken
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 380-386
DOI: 10.1055/s-0042-124408
Zahlreiche Operationen werden heute auch noch in höherem Lebensalter ambulant durchgeführt. Dieser Übersichtsartikel stellt die Vorteile der ambulanten Anästhesie bei älteren Patienten dar, zeigt aber auch die Risiken einer zu frühen Entlassung auf. Für den klinischen Alltag werden praktische Hilfestellungen für die Patientenauswahl gegeben und Risikofaktoren für eine ungeplante stationäre Aufnahme identifiziert.
[...]
Georg Thieme Verlag KG Stuttgart · New York
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Pssst … AINS-Secrets: heute aus der Urologie – TUR-Syndrom
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 395-398
DOI: 10.1055/s-0042-101662
Georg Thieme Verlag KG Stuttgart · New York
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Erratum: Atemwegsmanagement – der schwierige Atemweg beim thoraxchirurgischen Patienten
Anästhesiol Intensivmed Notfallmed Schmerzther
DOI: 10.1055/a-0613-2898
Georg Thieme Verlag KG Stuttgart · New York
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Sauerstoffgabe für die Mutter bei Kaiserschnitt und oxidativer Stress des Kindes
Anästhesiol Intensivmed Notfallmed Schmerzther 2018; 53: 322-322
DOI: 10.1055/a-0607-6131
Georg Thieme Verlag KG Stuttgart · New York
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Preface
Publication date: June 2018
Source:Best Practice & Research Clinical Endocrinology & Metabolism, Volume 32, Issue 3
Author(s): Matti Poutanen, Manuel Tena-Sempere
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Editorial Board
Publication date: June 2018
Source:Best Practice & Research Clinical Endocrinology & Metabolism, Volume 32, Issue 3
https://ift.tt/2Gr1L2l
Fixation and Spread of Somatic Mutations in Adult Human Colonic Epithelium
Publication date: Available online 17 May 2018
Source:Cell Stem Cell
Author(s): Anna M. Nicholson, Cora Olpe, Alice Hoyle, Ann-Sofie Thorsen, Teja Rus, Mathilde Colombé, Roxanne Brunton-Sim, Richard Kemp, Kate Marks, Phil Quirke, Shalini Malhotra, Rogier ten Hoopen, Ashraf Ibrahim, Cecilia Lindskog, Meagan B. Myers, Barbara Parsons, Simon Tavaré, Mark Wilkinson, Edward Morrissey, Douglas J. Winton
We investigated the means and timing by which mutations become fixed in the human colonic epithelium by visualizing somatic clones and mathematical inference. Fixation requires two sequential steps. First, one of approximately seven active stem cells residing within each colonic crypt has to be mutated. Second, the mutated stem cell has to replace neighbors to populate the entire crypt in a process that takes several years. Subsequent clonal expansion due to crypt fission is infrequent for neutral mutations (around 0.7% of all crypts undergo fission in a single year). Pro-oncogenic mutations subvert both stem cell replacement to accelerate fixation and clonal expansion by crypt fission to achieve high mutant allele frequencies with age. The benchmarking of these behaviors allows the advantage associated with different gene-specific mutations to be compared irrespective of the cellular mechanisms by which they are conferred.
Graphical abstract
Teaser
Winton and colleagues describe stem cell dynamics in normal human colon to identify the efficiency of clone fixation within the epithelium and the rate of subsequent lateral expansion. Against these benchmarks biased stem cell behaviors advantaged in both fixation and expansion can be quantified to predict the age-related burden of pro-oncogenic mutation.https://ift.tt/2wS4Mtf
High-Throughput Screening Enhances Kidney Organoid Differentiation from Human Pluripotent Stem Cells and Enables Automated Multidimensional Phenotyping
Publication date: Available online 17 May 2018
Source:Cell Stem Cell
Author(s): Stefan M. Czerniecki, Nelly M. Cruz, Jennifer L. Harder, Rajasree Menon, James Annis, Edgar A. Otto, Ramila E. Gulieva, Laura V. Islas, Yong Kyun Kim, Linh M. Tran, Timothy J. Martins, Jeffrey W. Pippin, Hongxia Fu, Matthias Kretzler, Stuart J. Shankland, Jonathan Himmelfarb, Randall T. Moon, Neal Paragas, Benjamin S. Freedman
Organoids derived from human pluripotent stem cells are a potentially powerful tool for high-throughput screening (HTS), but the complexity of organoid cultures poses a significant challenge for miniaturization and automation. Here, we present a fully automated, HTS-compatible platform for enhanced differentiation and phenotyping of human kidney organoids. The entire 21-day protocol, from plating to differentiation to analysis, can be performed automatically by liquid-handling robots, or alternatively by manual pipetting. High-content imaging analysis reveals both dose-dependent and threshold effects during organoid differentiation. Immunofluorescence and single-cell RNA sequencing identify previously undetected parietal, interstitial, and partially differentiated compartments within organoids and define conditions that greatly expand the vascular endothelium. Chemical modulation of toxicity and disease phenotypes can be quantified for safety and efficacy prediction. Screening in gene-edited organoids in this system reveals an unexpected role for myosin in polycystic kidney disease. Organoids in HTS formats thus establish an attractive platform for multidimensional phenotypic screening.
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Teaser
Organoids derived from human iPSCs have great potential for drug screening, but their complexity poses a challenge for miniaturization and automation. Freedman and colleagues establish a robotic pipeline to manufacture and analyze kidney organoids in microwell arrays. They apply this system to improve differentiation, measure toxicity, and comprehend disease.https://ift.tt/2IPmx0M
Epithelial Sodium Channel Regulates Adult Neural Stem Cell Proliferation in a Flow-Dependent Manner
Publication date: Available online 17 May 2018
Source:Cell Stem Cell
Author(s): David Petrik, Michael H. Myoga, Sofia Grade, Niklas J. Gerkau, Melanie Pusch, Christine R. Rose, Benedikt Grothe, Magdalena Götz
One hallmark of adult neurogenesis is its adaptability to environmental influences. Here, we uncovered the epithelial sodium channel (ENaC) as a key regulator of adult neurogenesis as its deletion in neural stem cells (NSCs) and their progeny in the murine subependymal zone (SEZ) strongly impairs their proliferation and neurogenic output in the olfactory bulb. Importantly, alteration of fluid flow promotes proliferation of SEZ cells in an ENaC-dependent manner, eliciting sodium and calcium signals that regulate proliferation via calcium-release-activated channels and phosphorylation of ERK. Flow-induced calcium signals are restricted to NSCs in contact with the ventricular fluid, thereby providing a highly specific mechanism to regulate NSC behavior at this special interface with the cerebrospinal fluid. Thus, ENaC plays a central role in regulating adult neurogenesis, and among multiple modes of ENaC function, flow-induced changes in sodium signals are critical for NSC biology.
Graphical abstract
Teaser
Stem cells need to adapt to signals from the environment to regulate their output. Here, we show the key role of a flow-sensitive ion channel in regulating the activation of adult neural stem cells and their output.https://ift.tt/2Kxs9Ks
Non-viral delivery of an optogenetic tool into cells with self-healing hydrogel
Publication date: August 2018
Source:Biomaterials, Volume 174
Author(s): Fu-Yu Hsieh, Hao-Wei Han, Xiao-Ru Chen, Chii-Shen Yang, Yen Wei, Shan-hui Hsu
Optogenetics offers unique, temporally precise control of neural activity in genetically targeted specific neurons that express light-sensitive opsin molecules. Three-dimensional (3D) delivery of optogenetics can be realized by co-injection of bacteriorhodopsin (HEBR) plasmid with a chitosan-based self-healing hydrogel with strong shear-thinning properties. The HEBR protein shows photoelectrical properties and can be used as an optical switch for cell activation. We optimize the shear force generated during the process of injection (∼100 Pa), which is transient because of the self-healing nature of the hydrogel. This transient force exerted by the self-healing hydrogel may allow the cytosolic delivery of HEBR plasmid with excellent cell viability and a high efficiency approaching 80%. When excited with green light, HEBR-delivered neural stem cells (NSCs) can proliferate and specifically differentiate into neurons in vitro and rescue the function of nerve impaired zebrafish in vivo. This novel optogenetic method combining 3D injectable self-healing hydrogel offers potential temporal-spatial approaches to treat neurodegenerative diseases in the future.
https://ift.tt/2KzfGWJ
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Publication date: September 2017 Source: Free Radical Biology and Medicine, Volume 110 Author(s): Lucía Fernández-del-Río, Anish Nag, Elen...
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Abstract Noise pollution is a major factor of environmental complaints in many cities, which has significant impacts on human health. As a...