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https://www.readbyqxmd.com/read/29775964/time-matters-for-intersex-bodies-between-socio-medical-time-and-somatic-time
#1
Limor Meoded Danon
This article focuses on the dynamic relationships between time and intersex bodies that exist, on the one hand, in medical policy on intersex bodies and, on the other, in intersex people's subjective experiences. Time, from a sociological perspective, is a biosocial agent that establishes diagnostic practices, regulations, and treatment policy regarding intersex bodies. The systematic construction of timeframes by biomedical professionals aims to rapidly diagnose and treat intersex patients and is deeply rooted in the "dimorphic soma-gender order" (DMSGO), the imagined unified relationship of female bodies to femininity and male bodies to masculinity...
May 8, 2018: Social Science & Medicine
https://www.readbyqxmd.com/read/29775960/strategies-to-decrease-oxidative-stress-biomarker-levels-in-human-medical-conditions-a-meta-analysis-on-8-iso-prostaglandin-f-2%C3%AE
#2
Thomas J van 't Erve
The widespread detection of elevated oxidative stress levels in many medical conditions has led to numerous efforts to design interventions to reduce its effects. Efforts have been wide-ranging, from dietary changes to administration of antioxidants, supplements, e.g., omega-3-fatty acids, and many medications. However, there is still no systemic assessment of the efficacy of treatments for oxidative stress reduction across a variety of medical conditions. The goal of this meta-analysis is, by combining multiple studies, to quantitate the change in the levels of the popular oxidative stress biomarker 8-iso-prostaglandin F2α (8-iso-PGF2α ) after a variety of treatment strategies in human populations...
May 9, 2018: Redox Biology
https://www.readbyqxmd.com/read/29775410/apelin-and-apj-orchestrate-complex-tissue-specific-control-of-cardiomyocyte-hypertrophy-and-contractility-in-the-hypertrophy-heart-failure-transition
#3
Victoria Nicole Parikh, Jing Liu, Ching Shang, Christopher Woods, Alex Chia Yu Chang, Mingming Zhao, David N Charo, Zachary Grunwald, Yong Huang, Kinya Seo, Philip S Tsao, Daniel Bernstein, Pilar Ruiz-Lozano, Thomas Quertermous, Euan A Ashley
The G protein coupled receptor APJ is a promising therapeutic target for heart failure. Constitutive deletion of APJ in the mouse is protective against the hypertrophy-heart failure transition via elimination of ligand-independent, β-arrestin dependent stretch transduction. However, the cellular origin of this stretch transduction and the details of its interaction with apelin signaling remain unknown. We generated mice with conditional elimination of APJ in the endothelium (APJendo-/- ) and myocardium (APJmyo-/- )...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29775296/incorporation-of-a-theranostic-two-tone-luminescent-silver-complex-into-biocompatible-agar-hydrogel-composite-for-the-eradication-of-eskape-pathogens-in-a-skin-and-soft-tissue-infection-model
#4
Miguel N Pinto, Jorge Martinez-Gonzalez, Indranil Chakraborty, Pradip K Mascharak
Microbial invasion and colonization of the skin and underlying soft tissues are among the most common types of infections, becoming increasingly prevalent in hospital settings. Systemic antibiotic chemotherapies are now extremely limited due to emergence of drug-resistant Gram-positive and multidrug-resistant Gram-negative bacterial strains. Topical administration of antimicrobials provides an effective route for the treatment of skin and soft tissue infections (SSTIs). Therefore, the development of new and effective materials for the delivery of these agents is of paramount importance...
May 18, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29775202/the-development-of-an-in-vitro-assay-for-the-prospective-determination-of-aspirin-sensitivity
#5
Erica S Westphal, Caitlin Wisniewski, Michelle Rainka, Nicholas M Smith, Vernice Bates, Fran M Gengo
Aspirin remains the standard for stroke prophylaxis. However, as many as 20%-25% of patients may fail to show a full response to aspirin. Ideally, patients who are resistant to aspirin could be identified, then receive an increased dose of aspirin or be changed to an alternative therapy more efficiently. We have developed an in vitro assay that may make this possible. Healthy volunteers (n = 13) between 18 and 50 years of age were tested for both ex vivo and in vivo responses to aspirin. Dimethyl sulfoxide (DMSO) was selected as the solvent for aspirin in the assay...
May 18, 2018: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29774535/physiology-and-molecular-biology-of-barrier-mechanisms-in-the-fetal-and-neonatal-brain
#6
Norman R Saunders, Katarzyna M Dziegielewska, Kjeld Møllgård, Mark D Habgood
Properties of the local internal environment of the adult brain are tightly controlled providing a stable milieu essential for its normal function. The mechanisms involved in this complex control are structural, molecular and physiological (influx and efflux transporters) frequently referred to as the "blood-brain barrier". These mechanisms include regulation of ion levels in brain interstitial fluid essential for normal neuronal function, supply of nutrients, removal of metabolic products and prevention of entry or elimination of toxic agents...
May 17, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29774416/restoration-of-proximal-periprosthetic-bone-loss-by-denosumab-in-cementless-total-hip-arthroplasty
#7
Satoshi Nagoya, Kenji Tateda, Shunichiro Okazaki, Ima Kosukegawa, Junya Shimizu, Toshihiko Yamashita
Denosumab contributed to the restoration of proximal periprosthetic bone loss around the femoral stem that were measured using a DEXA, especially in zone 7, at 1 year after cementless THA in elderly osteoporotic patients. INTRODUCTION: Although bone quality is an important issue in elderly osteoporotic patients who underwent total hip arthroplasty (THA) with a cementless stem, periprosthetic bone mineral density (BMD) in the proximal femur has been reported to be decreased by 15-40% postoperatively...
May 17, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29774213/a-rapid-growth-independent-antibiotic-resistance-detection-test-by-sybr-green-propidium-iodide-viability-assay
#8
Jie Feng, Rebecca Yee, Shuo Zhang, Lili Tian, Wanliang Shi, Wen-Hong Zhang, Ying Zhang
Antibiotic-resistant bacteria have caused huge concerns and demand innovative approaches for their prompt detection. Current antimicrobial susceptibility tests (AST) rely on the growth of the organisms which takes 1-2 days for fast-growing organisms and several weeks for slow growing organisms. Here, we show for the first time the utility of the SYBR Green I/propidium iodide (PI) viability assay for rapidly identifying antibiotic resistance in less than 30 min for major, antibiotic-resistant, fast-growing bacteria, such as Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae , and Acinetobacter baumannii for bactericidal and bacteriostatic agents and in 16 h for extremely rapid detection of drug resistance for isoniazid and pyrazinamide in slow-growing Mycobacterium tuberculosis ...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29774113/ezh2-inhibitors-sensitize-myeloma-cell-lines-to-panobinostat-resulting-in-unique-combinatorial-transcriptomic-changes
#9
Taylor Harding, Jessica Swanson, Brian Van Ness
Multiple myeloma (MM) remains a largely incurable hematologic cancer due to an inability to broadly target inevitable drug-resistant relapse. Epigenetic abnormalities are abundantly present in multiple myeloma and have increasingly demonstrated critical roles for tumor development and relapse to standard therapies. Accumulating evidence suggests that the histone methyltransferase EZH2 is aberrantly active in MM. We tested the efficacy of EZH2 specific inhibitors in a large panel of human MM cell lines (HMCLs) and found that only a subset of HMCLs demonstrate single agent sensitivity despite ubiquitous global H3K27 demethylation...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29774066/caveolae-mediated-mesenchymal-stem-cell-labelling-by-pss-coated-plga-pfob-nano-contrast-agent-for-mri
#10
Hieu Vu Quang, Chi-Chih Chang, Ping Song, Ellen-Margrethe Hauge, Jørgen Kjems
Rationale: Non-invasive tracking of transplanted cells is critical in evaluating delivery, migration and prognosis of cell therapies. Methods: We formulated a nano-contrast agent consisting of a perfluorooctylbromide (PFOB) core within a shell of poly (lactic-co-glycolic acid) (PLGA) followed by a coat of polystyrene sulfonate (PSS) for 19 F MRI. The nano-contrast agent (PSS-NP) was characterised by DLS and the uptake efficiency of the nano-contrast agent (PSS-NP) was tested using flow cytometry, in vitro MRI and confocal microscopy...
2018: Theranostics
https://www.readbyqxmd.com/read/29773608/what-s-in-a-name-that-which-we-call-ipf-by-any-other-name-would-act-the-same
#11
Athol U Wells, Kevin K Brown, Kevin R Flaherty, Martin Kolb, Victor J Thannickal
Idiopathic pulmonary fibrosis (IPF) remains a truly idiopathic fibrotic disease, with a modest genetic predilection and candidate triggers but no overall explanation for the development of disease in non-familial cases. Agreement on terminology has contributed to major clinical and translational advances since the millennium. It is likely that the entity currently captured by the term "IPF" will be radically reclassified over the next decade, either through "splitting" (into IPF subgroups responding selectively to individual disease-modifying agents) or through "lumping" of IPF with other forms of progressive fibrotic lung disease (with shared pathogenetic mechanisms and IPF-like disease behaviour)...
May 2018: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/29773183/cytosolic-increased-labile-zn-2-contributes-to-arrhythmogenic-action-potentials-in-left-ventricular-cardiomyocytes-through-protein-thiol-oxidation-and-cellular-atp-depletion
#12
Sinan Degirmenci, Yusuf Olgar, Aysegul Durak, Erkan Tuncay, Belma Turan
Intracellular labile (free) Zn2+ -level ([Zn2+ ]i ) is low and increases markedly under pathophysiological conditions in cardiomyocytes. High [Zn2+ ]i is associated with alterations in excitability and ionic-conductances while exact mechanisms are not clarified yet. Therefore, we examined the elevated-[Zn2+ ]i on some sarcolemmal ionic-mechanisms, which can mediate cardiomyocyte dysfunction. High-[Zn2+ ]i induced significant changes in action potential (AP) parameters, including depolarization in resting membrane-potential and prolongations in AP-repolarizing phases...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29772728/preparation-and-thermal-properties-of-molecular-bridged-expanded-graphite-polyethylene-glycol-composite-phase-change-materials-for-building-energy-conservation
#13
Dong Zhang, Meizhu Chen, Quantao Liu, Jiuming Wan, Jinxuan Hu
Using phase change materials (PCMs) in building envelopes became a reliable method to improve indoor comfort and reduce buildings' energy consumption. This research developed molecular-bridged expanded graphite (EG)/polyethylene glycol (PEG) composite PCMs (m-EPs) to conserve energy in buildings. The m-EPs were prepared through a vacuum absorption technique, and a titanate coupling agent was used to build a molecular bridge between EG and PEG. SEM, mercury intrusion porosimetry (MIP), the leakage test, microcalorimetry, X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) were conducted to characterize the morphology, pore structure, absorbability, and modifying effects of the m-EPs...
May 16, 2018: Materials
https://www.readbyqxmd.com/read/29772529/microbial-bio-fuels-a-solution-to-carbon-emissions-and-energy-crisis
#14
Arun Kumar, Sumit Kaushal, Shubhini A Saraf, Jay Shankar Singh
Increasing energy demand, limited fossil fuel resources and climate change have prompted development of alternative sustainable and economical fuel resources such as crop-based bio-ethanol and bio-diesel. However, there is concern over use of arable land that is used for food agriculture for creation of biofuel. Thus, there is a renewed interest in the use of microbes particularly microalgae for bio-fuel production. Microbes such as micro-algae and cyanobacteria that are used for biofuel production also produce other bioactive compounds under stressed conditions...
June 1, 2018: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/29772494/effects-of-ceftriaxone-induced-intestinal-dysbacteriosis-on-regulatory-t-cells-validated-by-anaphylactic-mice
#15
Xia Luo, Zengfeng Pan, Shuang Luo, Qi Liu, Shaowei Huang, Guanghua Yang, Feifei Nong, Yajun Fu, Xiangliang Deng, Lian Zhou
Both probiotics and pathogens in the human gut express pathogen-associated molecular patterns (PAMPs) and die with the release of endotoxin and bacterial DNA, which can stimulate our immune system and cause immune reaction. However, it's interesting and fascinating to address why the normal intestinal flora will not generate immunological rejection like the pathogen does. By investigating the changes in cells and molecules relevant to immune tolerance in mice with ceftriaxone-induced dysbacteriosis, our study discovered that both the Evenness indexes and Shannon Wiener index of intestinal flora showed a decrease in dysbacteriosis mice...
May 14, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29772356/assessment-of-toxicity-and-differential-antimicrobial-activity-of-methanol-extract-of-rhizome-of-simaba-ferruginea-a-st-hil-and-its-isolate-canthin-6-one
#16
Vanessa Fátima Gazoni, Sikiru Olaitan Balogun, Karuppusamy Arunacham, Darley Maria Oliveira, Valdir Cechinel Filho, Samara Rosolem Lima, Edson Moleta Colodel, Ilsamar Mendes Soares, Sérgio Donizeti Ascêncio, Domingos Tabajara de Oliveira Martins
ETHNOPHARMACOLOGICAL RELEVANCE: Simaba ferruginea A. St.-Hil., Simaroubaceae, popularly known as "calunga" is a typical subtropical shrub used in Central Brazil mainly for infection, anti-inflammatory, analgesic and gastric duodenal-ulcers. It presents in its composition the alkaloid canthin-6-one, an alkaloid indole β-carboxylic. AIM: This study aims to investigate the toxicity, antimicrobial activities of methanol extract of Simaba ferruginea (MESf) and canthin-6-one by using different experimental models...
May 14, 2018: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/29772311/mid-term-outcomes-of-endovascular-aortic-aneurysm-repair-with-carbon-dioxide-guided-angiography
#17
Yuriko Takeuchi, Noriyasu Morikage, Yutaro Matsuno, Tamami Nakamura, Makoto Samura, Koshiro Ueda, Takasuke Harada, Yoshitaka Ikeda, Kotaro Suehiro, Hiroshi Ito, Kensuke Sakata, Kimikazu Hamano
BACKGROUND: Although iodinated contrast (IC) agents are commonly used in endovascular aneurysm repair (EVAR), perioperative use in patients with renal dysfunction or IC allergies is avoided. Carbon dioxide (CO2 )-guided angiography is a promising alternative. We aimed to evaluate short-term and mid-term outcomes of EVAR using CO2 -guided angiography. METHODS: Three hundred and eighty-one patients who underwent EVAR from January 2012 to September 2016 were retrospectively reviewed and divided into an IC-EVAR group (n=351) and CO2 -EVAR group (n=30)...
May 14, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29772261/maternal-immune-activation-with-staphylococcal-enterotoxin-a-produces-unique-behavioral-changes-in-c57bl-6-mouse-offspring
#18
Ruthy Glass, Sara Norton, Nicholas Fox, Alexander W Kusnecov
Stimulation of the immune system during pregnancy, known as maternal immune activation (MIA), can cause long-lasting neurobiological and behavioral changes in the offspring. This phenomenon has been implicated in the etiology of developmental psychiatric disorders, such as autism and schizophrenia. Much of this evidence is predicated on animal models using bacterial agents such as LPS and/or viral mimics such as Poly I:C, both of which act through toll-like receptors. However, fewer studies have examined the role of direct activation of maternal T-cells during pregnancy using microbial agents...
May 14, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29772036/chronic-urticaria-following-practice-guidelines
#19
E P Westby, C Lynde, G Sussman
Histamine is a key inflammatory player in the pathogenesis of urticaria, a mast-cell-driven disease characterized clinically by the development of wheals, angioedema, or both. Changes to the management of chronic spontaneous urticaria have recently been adopted due to increasing literature surrounding the efficacy and safety of up-dosing modern second-generation H1 -antihistamines and the use of omalizamub, a biologic agent, as a third-line treatment. Given the prevalence of chronic urticaria and its impact on quality of life, this editorial aims to provide a summary of the proposed updated guidelines for the management of chronic urticaria as agreed upon at the 5th Consensus Conference on the Update and Revision of the EAACI/GA2 LEN/EDF/WAO Guideline for Urticaria in Berlin in December 2016...
May 2018: Skin Therapy Letter
https://www.readbyqxmd.com/read/29771999/growth-medium-dependent-antimicrobial-activity-of-early-stage-mep-pathway-inhibitors
#20
Sara Sanders, David Bartee, Mackenzie J Harrison, Paul D Phillips, Andrew T Koppisch, Caren L Freel Meyers
The in vivo microenvironment of bacterial pathogens is often characterized by nutrient limitation. Consequently, conventional rich in vitro culture conditions used widely to evaluate antibacterial agents are often poorly predictive of in vivo activity, especially for agents targeting metabolic pathways. In one such pathway, the methylerythritol phosphate (MEP) pathway, which is essential for production of isoprenoids in bacterial pathogens, relatively little is known about the influence of growth environment on antibacterial properties of inhibitors targeting enzymes in this pathway...
2018: PloS One
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