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https://www.readbyqxmd.com/read/27923070/macrophage-colony-stimulating-factor-derived-from-cd4-t-cells-contributes-to-control-of-a-blood-borne-infection
#1
Mary F Fontana, Gabrielly L de Melo, Chioma Anidi, Rebecca Hamburger, Chris Y Kim, So Youn Lee, Jennifer Pham, Charles C Kim
Dynamic regulation of leukocyte population size and activation state is crucial for an effective immune response. In malaria, Plasmodium parasites elicit robust host expansion of macrophages and monocytes, but the underlying mechanisms remain unclear. Here we show that myeloid expansion during P. chabaudi infection is dependent upon both CD4+ T cells and the cytokine Macrophage Colony Stimulating Factor (MCSF). Single-cell RNA-Seq analysis on antigen-experienced T cells revealed robust expression of Csf1, the gene encoding MCSF, in a sub-population of CD4+ T cells with distinct transcriptional and surface phenotypes...
December 2016: PLoS Pathogens
https://www.readbyqxmd.com/read/27922849/renal-denervation-for-uncontrolled-hypertension-critical-review-of-the-evidence
#2
Chongjia Chen, Ashish Upadhyay
PURPOSE OF REVIEW: Hypertension (HTN) is a major global public health problem. Endovascular catheter-based radiofrequency ablation of renal sympathetic nerve endings (renal denervation) is a novel treatment option for uncontrolled HTN. RECENT FINDINGS: Early clinical studies primarily in Australia and Europe established renal denervation as a well tolerated and feasible procedure that resulted in a sustained reduction in blood pressure among individuals with severe resistant HTN...
December 2, 2016: Current Opinion in Nephrology and Hypertension
https://www.readbyqxmd.com/read/27922498/inclusion-body-myositis
#3
Steven A Greenberg
PURPOSE OF REVIEW: Inclusion body myositis (IBM) is an enigmatic progressive disease of skeletal muscle. This review provides a summary of the clinical and pathophysiologic aspects of IBM. RECENT FINDINGS: The development of diagnostic blood testing for IBM followed from the discovery of a B-cell pathway in IBM muscle and circulating autoantibodies against NT5C1A, further establishing IBM's status as an autoimmune disease. The key role of cytotoxic T cells in IBM is further supported by the identification of a link between IBM and T-cell large granular lymphocytic leukemia...
December 2016: Continuum: Lifelong Learning in Neurology
https://www.readbyqxmd.com/read/27921290/-bath-salts-the-new-york-city-medical-examiner-experience-a-3-year-retrospective-review
#4
Stephen J deRoux, William A Dunn
"Bath salts" are synthetic derivatives of cathinones, compounds found in the leaves of Catha edulis, which possesses amphetamine-like properties. At the New York City Office of Chief Medical Examiner, we conducted a 3-year retrospective analysis of deaths in which cathinones were detected. Two categories emerged; those in which cathinones were a contributory cause of death (15 cases) and those in which they were an incidental finding (15 cases). Of the former group, 13 were associated with additional intoxicants; two deaths were attributed solely to cathinone intoxication, both survived 10 h: a man whose postmortem blood methylone concentration was 0...
December 6, 2016: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/27921098/time-outdoors-blood-vitamin-d-status-and-myopia-a-review
#5
Chen-Wei Pan, Deng-Juan Qian, Seang-Mei Saw
BACKGROUND: Myopia is a major public health concern throughout the world and the prevalence has been increasing rapidly in recent years, especially in urban Asia. The "vitamin D hypothesis" has been raised recently because vitamin D may be a link between less time outdoors and increased risk of myopia. METHODS: We reviewed all studies published in English which examined the association of time outdoors and blood vitamin D status with myopia. RESULTS: The protective effect of time spent outdoors on the risk of myopia onset has been well-established with numerous observational studies and three trials published...
December 6, 2016: Photochemical & Photobiological Sciences
https://www.readbyqxmd.com/read/27920414/morbidity-and-mortality-and-predictors-of-outcome-following-hepatectomy-at-a-saudi-tertiary-care-center
#6
Faisal Al-Alem, Rafif Essam Mattar, Ola Abdelmonem Fadl, Abdulsalam Alsharabi, Faisal Al-Saif, Mazen Hassanain
BACKGROUND: Hepatic resection is a major surgical procedure. Data on outcomes of hepatectomy in Saudi Arabia are scarce. OBJECTIVE: To measure morbidity and mortality and assess predictors of outcome after hepatectomy. DESIGN: Descriptive study. SETTING: Tertiary care center in Saudi Arabia with well established hepatobiliary surgery unit. PATIENTS AND METHODS: All patients undergoing liver resection in our institute during 2006-2014...
November 2016: Annals of Saudi Medicine
https://www.readbyqxmd.com/read/27919930/mir-17-20-controls-prolyl-hydroxylase-2-phd2-hypoxia-inducible-factor-1-hif1-to-regulate-pulmonary-artery-smooth-muscle-cell-proliferation
#7
Tianji Chen, Qiyuan Zhou, Haiyang Tang, Melike Bozkanat, Jason X-J Yuan, J Usha Raj, Guofei Zhou
BACKGROUND: Previously we found that smooth muscle cell (SMC)-specific knockout of miR-17~92 attenuates hypoxia-induced pulmonary hypertension. However, the mechanism underlying miR-17~92-mediated pulmonary artery SMC (PASMC) proliferation remains unclear. We sought to investigate whether miR-17~92 regulates hypoxia-inducible factor (HIF) activity and PASMC proliferation via prolyl hydroxylases (PHDs). METHODS AND RESULTS: We show that hypoxic sm-17~92(-/-) mice have decreased hematocrit, red blood cell counts, and hemoglobin contents...
December 5, 2016: Journal of the American Heart Association
https://www.readbyqxmd.com/read/27919826/should-blood-pressure-goal-be-individualized-in-hypertensive-patients
#8
REVIEW
Alexandra Yannoutsos, Rania Kheder-Elfekih, Jean-Michel Halimi, Michel E Safar, Jacques Blacher
The aim of the present review is to consider the clinical relevance of individualized blood pressure (BP) goal under treatment in hypertensive patients according to their age, comorbidities or established cardiovascular (CV) disease. Evidence from large-scale randomized trials to support a lower BP goal, as initially recommended by guidelines in high-risk hypertensive patients, were lacking. Recently, the randomized intervention SPRINT trial studied two treatment targets for systolic BP (120mm Hg versus 140mm Hg in the intensive and standard treatment group, respectively) among high-risk hypertensive patients, without diabetes and without a history of prior stroke...
December 2, 2016: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/27919784/a-comparison-study-between-the-saturation-recovery-t1-and-casl-mri-methods-for-quantitative-cbf-imaging
#9
Xiao Wang, Xiao-Hong Zhu, Yi Zhang, Afshin A Divani, Amanda J Murphy, Wei Chen
The saturation-recovery (SR)-T1 MRI method for quantitatively imaging cerebral blood flow (CBF) change (ΔCBF) concurrently with the blood oxygenation level dependence (BOLD) alteration has been recently developed and validated by simultaneous measurement of relative CBF change using laser Doppler flowmetry (LDF) in rats at 9.4T. In this study, ΔCBF induced by mildly transient hypercapnia and measured by the SR-T1 MRI method was rigorously compared with an established perfusion MRI method-continuous arterial spin labeling (CASL) approach in normal and preclinical middle cerebral artery occlusion (MCAo) rat models...
December 2, 2016: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/27919689/seasonal-dynamics-of-human-retinol-status-in-mobile-pastoralists-in-chad
#10
Lisa Crump, Mahamat Béchir, Bongo Naré Richard Ngandolo, Doumagoum Moto Daugla, Jan Hattendorf, Jakob Zinsstag
Vitamin A deficiency is a prevalent public health problem in Africa and South-East Asia, although national population based surveys are lacking in many countries. This study investigated seasonal variation of human retinol concentrations in Chadian mobile pastoralists to identify critical time periods for interventions addressing vitamin A deficiency. The repeated cross-sectional study design used convenience sampling during three seasons to include 327 Fulani, Gorane and Arab adult mobile pastoralists in nine camps in the Lake Chad area...
December 2, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27919349/familial-combined-hyperlipidemia-and-hyperlipoprotein-a-as-phenotypic-mimics-of-familial-hypercholesterolemia-frequencies-associations-and-predictions
#11
Katrina L Ellis, Jing Pang, Dick C Chan, Amanda J Hooper, Damon A Bell, John R Burnett, Gerald F Watts
BACKGROUND: A significant proportion of index cases presenting with phenotypic familial hypercholesterolemia (FH) are not found to have a pathogenic mutation and may have other inherited conditions. OBJECTIVES: Familial combined hyperlipidemia (FCHL) and elevated lipoprotein(a) [Lp(a)] may mimic FH, but the frequency and correlates of these disorders among mutation-negative FH patients have yet to be established. METHODS: The frequency of FCHL and elevated Lp(a) was investigated in 206 FH mutation-negative index cases attending a specialist lipid clinic...
November 2016: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/27918956/the-injury-of-fine-particulate-matter-from-cooking-oil-fumes-on-umbilical-cord-blood-vessels-in-vitro
#12
Lijuan Hou, Jian Zhang, Chao Zhang, Yachun Xu, Xiaoxia Zhu, Cijiang Yao, Ying Liu, Tao Li, Jiyu Cao
Cooking oil fumes (COFs) derived PM2.5 is the major source of indoor air pollution in Asia. For this, a pregnant rat model within different doses of cooking oil fumes (COFs) derived PM2.5 was established in pregnancy in our research. Our previous studies have showed that exposure to COFs-derived PM2.5 was related to adverse pregnancy outcomes. However, the mechanisms of signaling pathways remain unknown. Therefore, this study aimed to investigate the underlying mechanisms induced by COFs-derived PM2.5 injury on umbilical cord blood vessels (UCs) in vitro...
November 21, 2016: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/27918839/clinical-utility-of-bronchoalveolar-lavage-cytomegalovirus-viral-loads-in-the-diagnosis-of-cytomegalovirus-pneumonitis-in-infants
#13
Kerusha Govender, Prakash Jeena, Raveen Parboosing
Cytomegalovirus (CMV) pneumonitis is a significant cause of morbidity and mortality of children in Africa. The current practice for diagnosing CMV pneumonitis in this setting is based on interpretation of clinical, laboratory, and radiological findings. There is a need for a sensitive and specific laboratory test to objectively distinguish between patients with CMV pneumonitis and those with CMV infection, and non-CMV pneumonia. In this study, we compared plasma and non-bronchoscopic bronchoalveolar lavage (NBBAL) CMV viral loads in patients with CMV pneumonitis and those with CMV infection and non-CMV pneumonia...
November 5, 2016: Journal of Medical Virology
https://www.readbyqxmd.com/read/27918730/il-4-induces-the-formation-of-multinucleated-giant-cells-and-expression-of-%C3%AE-5-integrin-in-central-giant-cell-lesion
#14
A Aghbali, S Rafieyan, L Mohamed-Khosroshahi, B Baradaran, D Shanehbandi, M Kouhsoltani
BACKGROUND: It is now well established that IL-4 has a central role in the development of monocytes to multinucleated giant cells (MGCs) by inducing the expression of integrins on the surface of monocytes. The aim of this study was to investigate the potential role of IL-4 in induction of β5 integrin expression in the peripheral blood samples of patients with giant cell granuloma. MATERIAL AND METHODS: Monocytes were isolated from peripheral blood samples of patients with central giant cell granuloma (CGCG) and healthy controls using human Monocyte Isolation Kit II...
December 6, 2016: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/27918385/neurally-adjusted-ventilatory-assist-in-preterm-infants-with-established-or-evolving-bronchopulmonary-dysplasia-on-high-intensity-mechanical-ventilatory-support-a-single-center-experience
#15
Young Hwa Jung, Han-Suk Kim, Juyoung Lee, Seung Han Shin, Ee-Kyung Kim, Jung-Hwan Choi
OBJECTIVES: The aim of the present study was to report possible improvements in ventilator variables associated with a transition from synchronized intermittent mandatory ventilation to neurally adjusted ventilatory assist in preterm infants with bronchopulmonary dysplasia who required a high level of mechanical ventilatory support in a single center. DESIGN: Retrospective study. SETTING: Neonatal ICU. PATIENTS: Twenty-nine preterm infants with a median gestational age of 25...
December 2016: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/27918198/ppar%C3%AE-dependent-increase-of-mouse-urine-output-by-gemfibrozil-and-fenofibrate
#16
Danjun Song, Min Luo, Manyun Dai, Shizhong Bu, Weihua Wang, Burong Zhang, Frank J Gonzalez, Aiming Liu
While gemfibrozil and fenofibrate are prescribed for anti-dyslipidemia treatment, a rational basis for the use of these drugs for treatment of dyslipidemia with concurrent metabolic syndrome has not been established. In this study, wild-type and Pparα-null mice were fed gemfibrozil- or fenofibrate-containing diets for 14 days. Urine output (24 h) was monitored, and urine, serum, and liver and kidney tissues were subjected to toxicity assessment. A 2-month challenge followed by a 2-week wash-out was performed for gemfibrozil to determine urine output and the potential toxicity...
September 6, 2016: Canadian Journal of Physiology and Pharmacology
https://www.readbyqxmd.com/read/27917915/blood-hsa-mir-122-5p-and-hsa-mir-885-5p-levels-associate-with-fatty-liver-and-related-lipoprotein-metabolism-the-young-finns-study
#17
Emma Raitoharju, Ilkka Seppälä, Leo-Pekka Lyytikäinen, Jorma Viikari, Mika Ala-Korpela, Pasi Soininen, Antti J Kangas, Melanie Waldenberger, Norman Klopp, Thomas Illig, Jaana Leiviskä, Britt-Marie Loo, Niku Oksala, Mika Kähönen, Nina Hutri-Kähönen, Reijo Laaksonen, Olli Raitakari, Terho Lehtimäki
MicroRNAs are involved in disease development and may be utilized as biomarkers. We investigated the association of blood miRNA levels and a) fatty liver (FL), b) lipoprotein and lipid pathways involved in liver lipid accumulation and c) levels of predicted mRNA targets in general population based cohort. Blood microRNA profiling (TaqMan OpenArray), genome-wide gene expression arrays and nuclear magnetic resonance metabolomics were performed for Young Finns Study participants aged 34-49 years (n = 871)...
December 5, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27917711/theories-about-blood-coagulation-in-the-writings-of-ancient-greek-medico-philosophers
#18
Gregory Tsoucalas, Marianna Karamanou, Theodoros G Papaioannou, Markos Sgantzos
Anaxagoras and Empedocles both established during the Presocratic era a pioneering theory for the creation of everything in the universe. Macrocosmos' impact through the "Four Elements Theory" explained the conglomeration of the blood inside the vessels. Hippocrates, who instituted the "Four Humours theory", clearly understood blood's coagulation and introduced the term "thrombus". Plato, Aristotle and Galen, all engaged with the clotting phenomenon trying to interpret it. After eons of inquiry, it was the innovative thinking of the ancient Greek medico philosophers that set the scientific bases towards the understanding of a process that had been analyzing until our era...
December 5, 2016: Current Pharmaceutical Design
https://www.readbyqxmd.com/read/27916705/newborn-screening-for-severe-combined-immunodeficiency-using-a-novel-and-simplified-method-to-measure-t-cell-excision-circles-trec
#19
Laura Tagliaferri, Joachim B Kunz, Margit Happich, Susanna Esposito, Thomas Bruckner, Daniel Hübschmann, Jürgen G Okun, Georg F Hoffmann, Ansgar Schulz, Judit Kappe, Carsten Speckmann, Martina U Muckenthaler, Andreas E Kulozik
The prognosis of children with severe combined immunodeficiency (SCID) depends on a presymptomatic diagnosis and early treatment before complications occur. We established and tested a simplified, practical and economic newborn screening method based on the quantification of T-cell receptor excision circles (TRECs) on dried blood spots (DBSs) through qPCR. Our method was validated by the analysis of 11 positive controls, which all showed an absence of TRECs, thus yielding a sensitivity of 100%. Further, we analyzed 6034 anonymized newborns of whom 6031 (99,95%) showed a normal TREC qPCR with a median of 600 estimated TREC copies/1...
December 1, 2016: Clinical Immunology: the Official Journal of the Clinical Immunology Society
https://www.readbyqxmd.com/read/27916653/pericytes-an-overlooked-player-in-vascular-pathobiology
#20
REVIEW
David Ferland-McCollough, Sadie Slater, Jai Richard, Carlotta Reni, Giuseppe Mangialardi
Pericytes are a heterogeneous population of cells located in the blood vessel wall. They were first identified in the 19(th) century by Rouget, however their biological role and potential for drug targeting have taken time to be recognised. Isolation of pericytes from several different tissues has allowed a better phenotypic and functional characterization. These findings revealed a tissue-specific, multi-functional group of cells with multilineage potential. Given this emerging evidence, pericytes have acquired specific roles in pathobiological events in vascular diseases...
December 1, 2016: Pharmacology & Therapeutics
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