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https://www.readbyqxmd.com/read/28340510/the-diverse-family-of-mmpl-transporters-in-mycobacteria-from-regulation-to-antimicrobial-developments
#1
REVIEW
Albertus Viljoen, Violaine Dubois, Fabienne Girard-Misguich, Mickael Blaise, Jean-Louis Herrmann, Laurent Kremer
Mycobacterial genomes contain large sets of loci encoding membrane proteins that belong to a family of multidrug resistance pumps designated Resistance-Nodulation-Cell Division (RND) permeases. Mycobacterial membrane protein Large (MmpL) transporters represent a subclass of RND transporters known to participate in the export of lipid components across the cell envelope. These surface-exposed lipids with unusual structures play key roles in the physiology of mycobacteria and/or can act as virulence factors and immunomodulators...
March 24, 2017: Molecular Microbiology
https://www.readbyqxmd.com/read/28340373/influence-of-sex-on-cardiovascular-drug-responses-role-of-estrogen
#2
REVIEW
Abdel A Abdel-Rahman
In this review we discuss the sex/estrogen-specific modulation of cardiovascular function and responses to current therapeutics. We discuss how anatomical differences such as a smaller kidney size, and lower glomerular filtration rate in females, reduce the clearance and increase the toxicity of some drugs in females. Other important sex differences include the dampening effect of estrogen on central sympathetic and renin angiotensin systems. Further, we discuss how a shift in myocardial redox status leads to paradoxical transformation of estrogen into a pro-inflammatory hormone...
March 21, 2017: Current Opinion in Pharmacology
https://www.readbyqxmd.com/read/28339617/searching-for-the-smoker-s-paradox-in-acute-stroke-patients-treated-with-intravenous-thrombolysis
#3
Haitham M Hussein, Nicki Niemann, Emily D Parker, Adnan I Qureshi
Background: Inconsistent evidence supports better outcome in smokers after stroke. Our study examines this association in a large sample of ischemic stroke treated with intravenous thrombolysis. Method: Virtual International Stroke Trials Archive (VISTA) database, composed of individual patient data of multiple clinical trials, was queried. The primary outcome was functional independence at 3 months noted by modified Rankin Scale (mRS; a 7-point scale ranging from 0 [no deficit] to 6 [death]) score≤ 2...
January 28, 2017: Nicotine & Tobacco Research: Official Journal of the Society for Research on Nicotine and Tobacco
https://www.readbyqxmd.com/read/28335560/serum-amyloid-a-production-is-triggered-by-sleep-deprivation-in-mice-and-humans-is-that-the-link-between-sleep-loss-and-associated-comorbidities
#4
Edson M de Oliveira, Bruna Visniauskas, Sergio Tufik, Monica L Andersen, Jair R Chagas, Ana Campa
Serum amyloid A (SAA) was recently associated with metabolic endotoxemia, obesity and insulin resistance. Concurrently, insufficient sleep adversely affects metabolic health and is an independent predisposing factor for obesity and insulin resistance. In this study we investigated whether sleep loss modulates SAA production. The serum SAA concentration increased in C57BL/6 mice subjected to sleep restriction (SR) for 15 days or to paradoxical sleep deprivation (PSD) for 72 h. Sleep restriction also induced the upregulation of Saa1...
March 21, 2017: Nutrients
https://www.readbyqxmd.com/read/28334657/investigating-the-poverty-obesity-paradox-in-europe
#5
Luca Salmasi, Martina Celidoni
This paper investigates the effect of income- and wealth-based poverty on the probability of being obese for the elderly in Europe by analysing data drawn from the Survey of Health, Ageing and Retirement (SHARE) and the English Longitudinal Study of Ageing (ELSA). We use early-life economic conditions and regional circumstances as instruments for poverty later in life to account for endogeneity issues. After controlling for a large set of covariates at the individual, household, regional and country level, the results show that poverty significantly increases the probability of being obese and the Body Mass Index (BMI), for men and women...
March 9, 2017: Economics and Human Biology
https://www.readbyqxmd.com/read/28334603/the-cb1-receptor-as-the-cornerstone-of-exostasis
#6
REVIEW
Pier Vincenzo Piazza, Daniela Cota, Giovanni Marsicano
The type-1 cannabinoid receptor (CB1) is the main effector of the endocannabinoid system (ECS), which is involved in most brain and body functions. In this Perspective, we provide evidence indicating that CB1 receptor functions are key determinants of bodily coordinated exostatic processes. First, we will introduce the concepts of endostasis and exostasis as compensation or accumulation for immediate or future energy needs and discuss how exostasis has been necessary for the survival of species during evolution...
March 22, 2017: Neuron
https://www.readbyqxmd.com/read/28331797/paradoxical-response-with-increased-tumor-necrosis-factor-%C3%AE-levels-to-anti-tuberculosis-treatment-in-a-patient-with-disseminated-tuberculosis
#7
Sho Watanabe, Yugo Kaneko, Hironori Kawamoto, Tomoki Maehara, Yuri Baba, Ikumi Fujisaki, Nayuta Saito, Kai Ryu, Aya Seki, Tsugumi Horikiri, Akira Kinoshita, Hiroshi Takeda, Keisuke Saito, Kazuyosi Kuwano
It has been reported that tuberculosis (TB) worsens after cessation of tumor necrosis factor-α inhibitors and starting anti-TB treatment. Little is known about the immunological pathogenesis of this paradoxical response (PR). We report the first case of a TB patient in whom PR occurred concurrently with elevation of circulating tumor necrosis factor-α (TNFα) levels. A 75-year-old woman, who had been treated with adalimumab for SAPHO syndrome, developed disseminated TB. Soon after administration of anti-TB treatment (isoniazid, rifampicin, pyrazinamide, and ethambutol), and after discontinuation of adalimumab, a PR occurred...
2017: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/28330588/why-serious-mental-illness-should-be-designated-a-health-disparity-and-the-paradox-of-ethnicity
#8
Stephen J Bartels, Peter DiMilia
No abstract text is available yet for this article.
March 16, 2017: Lancet Psychiatry
https://www.readbyqxmd.com/read/28329423/does-the-vulnerability-paradox-in-ptsd-apply-to-women-and-men-an-exploratory-study
#9
Michel L A Dückers, Miranda Olff
Recent research suggests that greater country vulnerability is associated with a decreased, rather than increased, risk of mental health problems. Because societal parameters may have gender-specific implications, our objective was to explore whether the "vulnerability paradox" equally applies to women and men. Lifetime posttraumatic stress disorder (PTSD) prevalence data for women and men were retrieved from 11 population studies (N = 57,031): conducted in Australia, Brazil, Canada, France, Lebanon, Mexico, Netherlands, Portugal, Sweden, Switzerland, and the United States...
March 22, 2017: Journal of Traumatic Stress
https://www.readbyqxmd.com/read/28329172/the-obesity-paradox-is-still-there-a-risk-analysis-of-over-15-000-cardiosurgical-patients-based-on-body-mass-index
#10
Martin Hartrumpf, Ralf-Uwe Kuehnel, Johannes M Albes
OBJECTIVES: Obesity is an ever-growing problem in contemporary cardiac surgery. Although it accounts for many perioperative comorbidities, it has not been shown to increase mortality. Body mass index (BMI) is therefore not considered in the European System for Cardiac Operative Risk Evaluation (EuroSCORE). We sought to confirm whether this holds true for our own single-centre patient population. METHODS: Data from 15 314 consecutive patients receiving major cardiac surgery at our institution were analysed...
March 18, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28328996/diaphragmatic-function-is-enhanced-in-fatty-and-diabetic-fatty-rats
#11
Audrey De Jong, Serge Carreira, Na Na, Aude Carillion, Cheng Jiang, Maud Beuvin, Jean-Marc Lacorte, Dominique Bonnefont-Rousselot, Bruno Riou, Catherine Coirault
BACKGROUND: Obesity is associated with a decrease in mortality in the intensive care unit (ICU) (the "obesity paradox"). We hypothesized that obesity may paradoxically improve diaphragmatic function. METHODS: Diaphragm contractility was prospectively recorded in vitro in adult male Zucker lean (control), fatty, and diabetic fatty rats, at rest, after 12h mechanical ventilation and after fatigue. We analyzed diaphragm morphology, cytokines, and protein expression of the protein kinase signaling pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28328743/acetylcholine-atropine-interactions-paradoxical-effects-on-atrial-fibrillation-inducibility
#12
Yu Liu, Benjamin J Scherlag, Youqi Fan, Wenfang Xia, He Huang, Sunny S Po
Atropine (ATr) is well known as a cholinergic antagonist, however, at low concentrations ATr could paradoxically accentuate the parasympathetic actions of acetylcholine (ACh). In 22 pentobarbital anesthetized dogs, via a left and right thoracotomy, a leak proof barrier was attached to isolate the atrial appendages (AAs) from the rest of the atria. In Group 1(Ach+ATr+Ach), ACh, 100 mM, was placed on the AA followed by the application of ATr, 2mg/cc. The average AFdur was 17±7 minutes. After ATr was applied to the AA and ACh again tested, the AFdur was markedly attenuated (2±2 minutes, p<0...
March 21, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28328652/delayed-second-dose-antibiotics-for-patients-admitted-from-the-emergency-department-with-sepsis-prevalence-risk-factors-and-outcomes
#13
Daniel Leisman, Victor Huang, Qiuping Zhou, Jeanie Gribben, Andrea Bianculli, Michelle Bernshteyn, Mary Frances Ward, Sandra M Schneider
OBJECTIVE: 1) Determine frequency and magnitude of delays in second antibiotic administration among patients admitted with sepsis; 2) Identify risk factors for these delays; and 3) Exploratory: determine association between delays and patient-centered outcomes (mortality and mechanical ventilation after second dose). DESIGN: Retrospective, consecutive sample sepsis cohort over 10 months. SETTING: Single, tertiary, academic medical center. PATIENTS: All patients admitted from the emergency department with sepsis or septic shock (defined: infection, ≥ 2 systemic inflammatory response syndrome criteria, hypoperfusion/organ dysfunction) identified by a prospective quality initiative...
March 21, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28328612/complications-after-treatment-of-head-and-neck-venous-malformations-with-sodium-tetradecyl-sulfate-foam
#14
Giacomo Colletti, Alberto Deganello, Alessandro Bardazzi, Raul Mattassi, Pietro Dalmonte, Luca Gazzabin, Francesco Stillo
PURPOSE: The aim of this study was to evaluate complications in patients with head and neck venous malformations (VMs) treated with foam sclerotherapy using sodium tetradecyl sulfate (STS). METHODS: The authors retrospectively evaluated the complications, pain. and degree of satisfaction in 69 consecutive patients affected by cervicofacial VM managed with STS using the Tessari method in a single institution. RESULTS: The average number of procedures for each patient was 2...
March 21, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28328590/air-embolism-during-posterior-spinal-fusion-in-a-10-year-old-girl-a-case-report
#15
Paul F Lee-Archer, Brett Chaseling
Venous air embolism is a rare but recognized complication of posterior spinal fusion surgery and epidural placement using a loss of resistance to air technique. We report a case of a probable venous air embolism causing cardiac arrest in a 10-year-old girl undergoing posterior spinal fusion in the prone position. The most likely source of the embolism was injection of air into the epidural space from a loss of resistance to air technique. This case also demonstrates the potential for paradoxical cerebral embolism in the absence of an intracardiac defect...
March 15, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28328093/race-in-an-epigenetic-time-thinking-biology-in-the-plural
#16
Maurizio Meloni
The notion that biological memories of environmental experiences can be embedded in the human genome and even transmitted transgenerationally is increasingly relevant in the postgenomic world, particularly in molecular epigenetics, where the genome is conceptualized as porous to environmental signals. In this article I discuss the current rethinking of race in epigenetic rather than genetic terms, emphasizing some of its paradoxical implications, especially for public policy. I claim in particular that: (i) if sociologists want to investigate race in a postgenomic world they should pay more attention to this novel plastic and biosocial view of race; and (ii) there are no reasons to believe that an epigenetic view will extinguish race, or that soft-inheritance claims will produce a less exclusionary discourse than genetics (hard heredity)...
March 22, 2017: British Journal of Sociology
https://www.readbyqxmd.com/read/28327290/bayesian-brains-without-probabilities
#17
REVIEW
Adam N Sanborn, Nick Chater
Bayesian explanations have swept through cognitive science over the past two decades, from intuitive physics and causal learning, to perception, motor control and language. Yet people flounder with even the simplest probability questions. What explains this apparent paradox? How can a supposedly Bayesian brain reason so poorly with probabilities? In this paper, we propose a direct and perhaps unexpected answer: that Bayesian brains need not represent or calculate probabilities at all and are, indeed, poorly adapted to do so...
December 2016: Trends in Cognitive Sciences
https://www.readbyqxmd.com/read/28325142/calcium-phosphate-nanoparticles-cytocompatibility-versus-cytotoxicity-a-serendipitous-paradox
#18
Milad Pourbaghi Masouleh, Vahid Hosseini, Masoud Pourhaghgouy, Martin K Bakht
Due to efficacious characteristics of calcium phosphate nanoparticles (CPNs), they have numerously been employed in nanomedicine, particularly as carrier for therapeutic and diagnostic agents, and also in tissue engineering. Although calcium phosphate minerals are noted for their cytocompatibility, there are outstanding findings from various studies that question whether they are still compatible with cells in nanoscale ranges or not and it leads to the controversial issue of CPNs cytocompatibility versus cytotoxicity...
March 21, 2017: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/28324791/spatio-temporal-neighborhood-impacts-on-internalizing-and-externalizing-behaviors-in-u-s-elementary-school-children-effect-modification-by-child-and-family-socio-demographics
#19
Jamie L Humphrey, Elisabeth D Root
Increasing evidence from experimental and non-experimental research has shown that children residing in disadvantaged neighborhoods exhibit greater levels of internalizing and externalizing behaviors, above and beyond individual characteristics, and family or school contexts. Using the ECLS-K, a nationally representative, longitudinal survey of U.S. school children, this study examined direct neighborhood effects on internalizing (N = 14,870; N = 10,610) and externalizing (N = 14,960; N = 10,730) behaviors at the beginning and end of elementary school...
March 12, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28323477/-the-service-i-rendered-was-just-as-true-african-american-soldiers-and-veterans-as-activist-patients
#20
Jessica L Adler
In this article, I examine how African American soldiers and veterans experienced and shaped federally sponsored health care during and after World War I. Building on studies of the struggles of Black leaders and health care providers to win professional and public health advancement in the 1920s and 1930s, and of advocates to mobilize for health care rights in the mid-20th century, I focus primarily on the experiences and activism of patients in the interwar years. Private and government correspondence, congressional testimony, and reports from Black newspapers reveal that African American soldiers and veterans communicated directly with policymakers and bureaucrats regarding unequal treatment, assuming roles as "policy actors" who viewed health and medical care as "politics by other means...
March 21, 2017: American Journal of Public Health
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