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https://www.readbyqxmd.com/read/28900918/new-aspects-of-the-contribution-of-er-to-soce-regulation-trpc-proteins-as-a-link-between-plasma-membrane-ion-transport-and-intracellular-ca-2-stores
#1
Alexis Bavencoffe, Michael Xi Zhu, Jin-Bin Tian
Transient receptor potential canonical (TRPC) proteins were identified as molecular candidates of receptor- and/or store-operated channels because of their close homology to the Drosophila TRP and TRPL. Functional studies have revealed that TRPC channels play an integrated part of phospholipase C-transduced cell signaling, mediating the influx of both Ca(2+) and Na(+) into cells. As a consequence, the TRPC channels have diverse functional roles in different cell types, including metabotropic receptor-evoked membrane depolarization and intracellular Ca(2+) concentration elevation...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28860525/glucocorticoids-are-lower-at-delivery-in-maternal-but-not-cord-blood-of-obese-pregnancies
#2
Laura I Stirrat, George Just, Natalie Z M Homer, Ruth Andrew, Jane E Norman, Rebecca M Reynolds
Glucocorticoids are vital for lung maturation. We previously showed that cortisol is lower in obese pregnancy. Whether this is maintained at delivery is unknown but is clinically relevant as maternal and cord blood cortisol levels are correlated and offspring of obese are more likely to need neonatal respiratory support. We hypothesized that glucocorticoids are lower in maternal and cord blood at delivery in obese pregnancies. Glucocorticoids (cortisol and corticosterone) and their inactive versions (cortisone and 11-dehydrocorticosterone) were measured by LC-MS/MS in maternal and cord plasma from 259 Caucasian women at delivery (BMI 18-55 kg/m(2))...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28797127/the-resqu-index-a-new-instrument-to-appraise-the-quality-of-research-on-birth-place
#3
Saraswathi Vedam, Chris Rossiter, Caroline S E Homer, Kathrin Stoll, Vanessa L Scarf
OBJECTIVE: Place of birth is a known determinant of health care outcomes, interventions and costs. Many studies have examined the maternal and perinatal outcomes when women plan to give birth in hospitals compared with births in birth centres or at home. However, these studies vary substantially in rigour; assessing their quality is challenging. Existing research appraisal tools do not always capture important elements of study design that are critical when comparing outcomes by planned place of birth...
2017: PloS One
https://www.readbyqxmd.com/read/28796681/vasa-previa-diagnosis-clinical-practice-and-outcomes-in-australia
#4
Elizabeth A Sullivan, Nasrin Javid, Gregory Duncombe, Zhuoyang Li, Nadom Safi, Robert Cincotta, Caroline S E Homer, Lesley Halliday, Yinka Oyelese
OBJECTIVE: To estimate the incidence of women with vasa previa in Australia and to describe risk factors, timing of diagnosis, clinical practice, and perinatal outcomes. METHODS: A prospective population-based cohort study was undertaken using the Australasian Maternity Outcomes Surveillance System between May 1, 2013, and April 30, 2014, in hospitals in Australia with greater than 50 births per year. Women were included if they were diagnosed with vasa previa during pregnancy or childbirth, confirmed by clinical examination or placental pathology...
September 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28768838/perinatal-brain-docosahexaenoic-acid-concentration-has-a-lasting-impact-on-cognition-in-mice
#5
Luis E Lozada, Abhishek Desai, Karl Kevala, Ji-Won Lee, Hee-Yong Kim
Background: Premature infants are deprived of prenatal accumulation of brain docosahexaenoic acid [DHA (22:6n-3)], an omega-3 fatty acid [ω-3 FA (n-3 FA)] important for proper development of cognitive function. The resulting brain DHA deficit can be reversed by ω-3 FA supplementation.Objective: The objective was to test whether there is a critical period for providing ω-3 FA to correct cognitive deficits caused by developmental ω-3 FA deprivation in mice.Methods: Twelve timed-pregnant mice [embryonic day 14 (E14), C57/BL6NCr] were fed an ω-3 FA-deficient diet containing 0...
September 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28746409/high-resolution-molecular-and-histological-analysis-of-renal-disease-progression-in-zsf1-fa-facp-rats-a-model-of-type-2-diabetic-nephropathy
#6
Ken Dower, Shanrong Zhao, Franklin J Schlerman, Leigh Savary, Gabriela Campanholle, Bryce G Johnson, Li Xi, Vuong Nguyen, Yutian Zhan, Matthew P Lech, Ju Wang, Qing Nie, Morten A Karsdal, Federica Genovese, Germaine Boucher, Thomas P Brown, Baohong Zhang, Bruce L Homer, Robert V Martinez
ZSF1 rats exhibit spontaneous nephropathy secondary to obesity, hypertension, and diabetes, and have gained interest as a model system with potentially high translational value to progressive human disease. To thoroughly characterize this model, and to better understand how closely it recapitulates human disease, we performed a high resolution longitudinal analysis of renal disease progression in ZSF1 rats spanning from early disease to end stage renal disease. Analyses included metabolic endpoints, renal histology and ultrastructure, evaluation of a urinary biomarker of fibrosis, and transcriptome analysis of glomerular-enriched tissue over the course of disease...
2017: PloS One
https://www.readbyqxmd.com/read/28711912/identification-of-two-novel-biomarkers-of-rectal-carcinoma-progression-and-prognosis-via-co-expression-network-analysis
#7
Min Sun, Taojiao Sun, Zhongshi He, Bin Xiong
mRNA expression profiles provide important insights on a diversity of biological processes involved in rectal carcinoma (RC). Our aim was to comprehensively map complex interactions between the mRNA expression patterns and the clinical traits of RC. We employed the integrated analysis of five microarray datasets and The Cancer Genome Atlas rectal adenocarcinoma database to identify 2118 consensual differentially expressed genes (DEGs) in RC and adjacent normal tissue samples, and then applied weighted gene co-expression network analysis to parse DEGs and eight clinical traits in 66 eligible RC samples...
June 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28698564/homer-binds-to-orai1-and-trpc-channels-in-the-neointima-and-regulates-vascular-smooth-muscle-cell-migration-and-proliferation
#8
Shuping Jia, Miguel Rodriguez, Arthur G Williams, Joseph P Yuan
The molecular components of store-operated Ca(2+) influx channels (SOCs) in proliferative and migratory vascular smooth muscle cells (VSMCs) are quite intricate with many channels contributing to SOCs. They include the Ca(2+)-selective Orai1 and members of the transient receptor potential canonical (TRPC) channels, which are activated by the endoplasmic reticulum Ca(2+) sensor STIM1. The scaffolding protein Homer assembles SOC complexes, but its role in VSMCs is not well understood. Here, we asked whether these SOC components and Homer1 are present in the same complex in VSMCs and how Homer1 contributes to VSMC SOCs, proliferation, and migration leading to neointima formation...
July 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28694308/association-of-delay-of-urgent-or-emergency-surgery-with-mortality-and-use-of-health-care-resources-a-propensity-score-matched-observational-cohort-study
#9
Daniel I McIsaac, Karim Abdulla, Homer Yang, Sudhir Sundaresan, Paula Doering, Sandeep Green Vaswani, Kednapa Thavorn, Alan J Forster
BACKGROUND: Delay of surgery for hip fracture is associated with increased risk of morbidity and mortality, but the effects of surgical delays on mortality and resource use in the context of other emergency surgeries is poorly described. Our objective was to measure the independent association between delay of emergency surgery and in-hospital mortality, length of stay and costs. METHODS: We identified all adult patients who underwent emergency noncardiac surgery between January 2012 and October 2014 at a single tertiary care centre...
July 10, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28673802/regular-activity-breaks-combined-with-physical-activity-improve-postprandial-plasma-triglyceride-nonesterified-fatty-acid-and-insulin-responses-in-healthy-normal-weight-adults-a-randomized-crossover-trial
#10
Ashleigh R Homer, Stephen P Fenemor, Tracy L Perry, Nancy J Rehrer, Claire M Cameron, C Murray Skeaff, Meredith C Peddie
BACKGROUND: Compared with prolonged sitting, regular activity breaks immediately lower postprandial glucose and insulin, but not triglyceride responses. Postprandial triglycerides can be lowered by physical activity but the effect is often delayed by ∼12 to 24 hours. OBJECTIVE: The objective of the study was to determine whether regular activity breaks affect postprandial triglyceride response in a delayed manner similar to physical activity. METHODS: In a randomized crossover trial, 36 adults (body mass index 23...
September 2017: Journal of Clinical Lipidology
https://www.readbyqxmd.com/read/28659708/specific-correlation-between-the-major-chromosome-10q26-haplotype-conferring-risk-for-age-related-macular-degeneration-and-the-expression-of-htra1
#11
Sha-Mei Liao, Wei Zheng, Jiang Zhu, Casey A Lewis, Omar Delgado, Maura A Crowley, Natasha M Buchanan, Bruce D Jaffee, Thaddeus P Dryja
PURPOSE: A region within chromosome 10q26 has a set of single nucleotide polymorphisms (SNPs) that define a haplotype that confers high risk for age-related macular degeneration (AMD). We used a bioinformatics approach to search for genes in this region that may be responsible for risk for AMD by assessing levels of gene expression in individuals carrying different haplotypes and by searching for open chromatin regions in the retinal pigment epithelium (RPE) that might include one or more of the SNPs...
2017: Molecular Vision
https://www.readbyqxmd.com/read/28622175/predictors-prognosis-and-management-of-new-clinically-important-atrial-fibrillation-after-noncardiac-surgery-a-prospective-cohort-study
#12
MULTICENTER STUDY
Pablo Alonso-Coello, Deborah Cook, Shou Chun Xu, Alben Sigamani, Otavio Berwanger, Soori Sivakumaran, Homer Yang, Denis Xavier, Luz Ximena Martinez, Pedro Ibarra, Purnima Rao-Melacini, Janice Pogue, Kelly Zarnke, Pilar Paniagua, Jack Ostrander, Salim Yusuf, P J Devereaux
BACKGROUND: Despite the frequency of new clinically important atrial fibrillation (AF) after noncardiac surgery and its increased association with the risk of stroke at 30 days, there are limited data informing their prediction, association with outcomes, and management. METHODS: We used the data from the PeriOperative ISchemic Evaluation trial to determine, in patients undergoing noncardiac surgery, the association of new clinically important AF with 30-day outcomes, and to assess management of these patients...
July 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28545724/the-role-of-ca-2-in-cell-death-caused-by-oxidative-glutamate-toxicity-and-ferroptosis
#13
REVIEW
Pamela Maher, Klaus van Leyen, Partha Narayan Dey, Birgit Honrath, Amalia Dolga, Axel Methner
Ca(2+) ions play a fundamental role in cell death mediated by oxidative glutamate toxicity or oxytosis, a form of programmed cell death similar and possibly identical to other forms of cell death like ferroptosis. Ca(2+) influx from the extracellular space occurs late in a cascade characterized by depletion of the intracellular antioxidant glutathione, increases in cytosolic reactive oxygen species and mitochondrial dysfunction. Here, we aim to compare oxidative glutamate toxicity with ferroptosis, address the signaling pathways that culminate in Ca(2+) influx and cell death and discuss the proteins that mediate this...
May 12, 2017: Cell Calcium
https://www.readbyqxmd.com/read/28536290/peptidoglycan-association-of-murein-lipoprotein-is-required-for-kpsd-dependent-group-2-capsular-polysaccharide-expression-and-serum-resistance-in-a-uropathogenic-escherichia-coli-isolate
#14
Jingyu Diao, Catrien Bouwman, Donghong Yan, Jing Kang, Anand K Katakam, Peter Liu, Homer Pantua, Alexander R Abbas, Nicholas N Nickerson, Cary Austin, Mike Reichelt, Wendy Sandoval, Min Xu, Chris Whitfield, Sharookh B Kapadia
Murein lipoprotein (Lpp) and peptidoglycan-associated lipoprotein (Pal) are major outer membrane lipoproteins in Escherichia coli Their roles in cell-envelope integrity have been documented in E. coli laboratory strains, and while Lpp has been linked to serum resistance in vitro, the underlying mechanism has not been established. Here, lpp and pal mutants of uropathogenic E. coli strain CFT073 showed reduced survival in a mouse bacteremia model, but only the lpp mutant was sensitive to serum killing in vitro The peptidoglycan-bound Lpp form was specifically required for preventing complement-mediated bacterial lysis in vitro and complement-mediated clearance in vivo Compared to the wild-type strain, the lpp mutant had impaired K2 capsular polysaccharide production and was unable to respond to exposure to serum by elevating capsular polysaccharide amounts...
May 23, 2017: MBio
https://www.readbyqxmd.com/read/28530113/refining-current-scientific-priorities-and-identifying-new-scientific-gaps-in-hiv-related-heart-lung-blood-and-sleep-research
#15
Homer L Twigg, Ronald Crystal, Judith Currier, Paul Ridker, Nancy Berliner, Hans-Peter Kiem, George Rutherford, Shimian Zou, Simone Glynn, Renee Wong, Emmanuel Peprah, Michael Engelgau, Tony Creazzo, Sandra Colombini-Hatch, Elisabet Caler
The National Heart, Lung, and Blood Institute (NHLBI) AIDS Program's goal is to provide direction and support for research and training programs in areas of HIV-related heart, lung, blood, and sleep (HLBS) diseases. To better define NHLBI current HIV-related scientific priorities and with the goal of identifying new scientific priorities and gaps in HIV-related HLBS research, a wide group of investigators gathered for a scientific NHLBI HIV Working Group on December 14-15, 2015, in Bethesda, MD. The core objectives of the Working Group included discussions on: (1) HIV-related HLBS comorbidities in the antiretroviral era; (2) HIV cure; (3) HIV prevention; and (4) mechanisms to implement new scientific discoveries in an efficient and timely manner so as to have the most impact on people living with HIV...
September 2017: AIDS Research and Human Retroviruses
https://www.readbyqxmd.com/read/28512860/intrinsic-cellular-and-molecular-properties-of-in-vivo-hippocampal-synaptic-plasticity-are-altered-in-the-absence-of-key-synaptic-matrix-molecules
#16
Stephan Jansen, Christine Gottschling, Andreas Faissner, Denise Manahan-Vaughan
Hippocampal synaptic plasticity comprises a key cellular mechanism for information storage. In the hippocampus, both long-term potentiation (LTP) and long-term depression (LTD) are triggered by synaptic Ca(2+) -elevations that are typically mediated by the opening of voltage-gated cation channels, such as N-methyl-d-aspartate receptors (NMDAR), in the postsynaptic density. The integrity of the post-synaptic density is ensured by the extracellular matrix (ECM). Here, we explored whether synaptic plasticity is affected in adult behaving mice that lack the ECM proteins brevican, neurocan, tenascin-C, and tenascin-R (KO)...
August 2017: Hippocampus
https://www.readbyqxmd.com/read/28495199/an-automated-multiplex-tandem-pcr-platform-for-the-diagnosis-of-gastrointestinal-nematode-infections-in-cattle-an-australian-european-validation-study
#17
Florian Roeber, Ebrahim Bani Hassan, Philip Skuce, Alison Morrison, Edwin Claerebout, Stijn Casaert, David R Homer, Simon Firestone, Mark Stevenson, Lee Smith, John Larsen
Detecting the genera and species of gastrointestinal (GI) nematode infections in faecal samples obtained from cattle requires the incubation of faeces ('larval culture') followed by identification of the third-stage larvae that are harvested after 10-14days. Substantial research in the development of PCR-based methods for the rapid and specific identification GI nematodes has been conducted for small ruminants, whilst only few such assays have been developed for cattle. In the present paper we describe the development of an automated, robotic PCR platform for the detection and genus and/or species-specific identification of GI nematodes from bovine faecal samples...
May 30, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28429277/primary-ewing-sarcoma-primitive-neuroectodermal-tumor-of-the-kidney-a-clinicopathologic-study-of-23-cases
#18
Paari Murugan, Priya Rao, Pheroze Tamboli, Bogdan Czerniak, Charles C Guo
Primary Ewing sarcoma / primitive neuroectodermal tumor (ES) of the kidney is a rare neoplasm with limited clinicopathologic data. We report 23 such cases with no history of ES elsewhere in the body. The patients included 13 male and 10 female, aged 8-70 years (mean, 31 years). The average tumor size was 11.7 cm (range, 5-20 cm). Microscopic analysis showed predominantly lobular growth (n = 14), with focal papillary (n = 3), alveolar (n = 1), and hemangiopericytoma-like (n = 1) patterns. Several tumors (n = 11) exhibited robust mitotic activity (>10 mitoses/10 high-power fields)...
April 20, 2017: Pathology Oncology Research: POR
https://www.readbyqxmd.com/read/28416429/-life-threatening-sleepwalking-elpenor-s-syndrome-in-a-10-year-old-child
#19
M-A Madigand-Tordjman, P-J Egler, F Bertran, M Jokic, F Guénolé
Though benign in the majority of cases, sleepwalking sometimes causes injuries due, among other causes, to falls. Such accidents can be life-threatening - a situation that has been termed Elpenor syndrome (in reference to an accident experienced by a character in Homer's epic The Odyssey) - in particular when entailing defenestration. This syndrome has been described in adults and adolescents; we report here a case in a child. OBSERVATION: This 10-year-old girl was admitted at night to our hospital after a 3-m fall at home...
April 14, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28384877/renal-primitive-neuroectodermal-tumour-case-report-of-a-rare-entity
#20
Sai Chandana Gali, B N Kumarguru, Balachandra Bhat, A S Ramaswamy, M Udaya Kumar
The peripheral Primitive Neuroectodermal Tumour (PNET) is a member of the family of small round cell tumours. PNET is more aggressive in kidney when compared to the other sites. It usually presents in childhood or adolescence. It has an aggressive clinical course and may process towards metastatic disease culminating in death. A 24-year-old female presented with left sided abdominal swelling. Abdominal ultrasound confirmed a heterogeneous left renal mass. Consequently the patient underwent nephrectomy of left kidney and left oophorectomy...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
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