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PloS One

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https://www.readbyqxmd.com/read/28085969/a-common-variant-in-scn5a-and-the-risk-of-ventricular-fibrillation-caused-by-first-st-segment-elevation-myocardial-infarction
#1
Reza Jabbari, Charlotte Glinge, Javad Jabbari, Bjarke Risgaard, Bo Gregers Winkel, Christian Juhl Terkelsen, Hans-Henrik Tilsted, Lisette Okkels Jensen, Mikkel Hougaard, Stig Haunsø, Thomas Engstrøm, Christine M Albert, Jacob Tfelt-Hansen
BACKGROUND: Several common genetic variants have been associated with either ventricular fibrillation (VF) or sudden cardiac death (SCD). However, replication efforts have been limited. Therefore, we aimed to analyze whether such variants may contribute to VF caused by first ST-elevation myocardial infarction (STEMI). METHODS: We analyzed 27 single nucleotide polymorphisms (SNP) previously associated with SCD/VF in other cohorts, and examined whether these SNPs were associated with VF caused by first STEMI in the GEnetic causes of Ventricular Arrhythmias in patients with first ST-elevation Myocardial Infarction (GEVAMI) study on ethnical Danes...
2017: PloS One
https://www.readbyqxmd.com/read/28085968/mass-potentials-recorded-at-the-round-window-enable-the-detection-of-low-spontaneous-rate-fibers-in-gerbil-auditory-nerve
#2
Charlène Batrel, Antoine Huet, Florian Hasselmann, Jing Wang, Gilles Desmadryl, Régis Nouvian, Jean-Luc Puel, Jérôme Bourien
Auditory nerve fibers (ANFs) transmit acoustic information from the sensory hair cells to the cochlear nuclei. In experimental and clinical audiology, probing the whole ANF population remains a difficult task, as the ANFs differ greatly in their threshold and onset response to sound. Thus, low spontaneous rate (SR) fibers, which have rather higher thresholds, delay and larger jitter in their first spike latency are not detectable in the far-field compound action potential of the auditory nerve. Here, we developed a new protocol of acoustic stimulation together with electrophysiological signal processing to track the steady state activity of ANFs...
2017: PloS One
https://www.readbyqxmd.com/read/28085967/levo-tetrahydroberberrubine-produces-anxiolytic-like-effects-in-mice-through-the-5-ht1a-receptor
#3
Guiyun Mi, Shuai Liu, Jian Zhang, Huichun Liang, Yunyun Gao, Nuomin Li, Boyang Yu, Hongju Yang, Zheng Yang
Tetrahydroprotoberberines (THPBs) are isoquinoline alkaloids isolated from the Chinese herb Corydalis yanhusuo. In the present study, we performed competitive binding assays to examine the binding of l-THBr to neurotransmitter receptors known to be involved in sedation, hypnosis and anxiety. Our results show that l-THBr does not interact with GABAergic receptors but has binding affinities for dopamine and serotonin receptors. In addition, cAMP and [35S]GTPγS assays were used to determine the agonist or antagonist properties of l-THBr at dopamine (D1, D2) or serotonin (5-HT) receptors...
2017: PloS One
https://www.readbyqxmd.com/read/28085966/a-cross-sectional-study-of-colonization-rates-with-methicillin-resistant-staphylococcus-aureus-mrsa-and-extended-spectrum-beta-lactamase-esbl-and-carbapenemase-producing-enterobacteriaceae-in-four-swiss-refugee-centres
#4
Rein Jan Piso, Roman Käch, Roxana Pop, Daniela Zillig, Urs Schibli, Stefano Bassetti, Dominik Meinel, Adrian Egli
BACKGROUND: The recent crisis of refugees seeking asylum in European countries challenges public health on many levels. Most refugees currently arrive from Syria, Afghanistan, or Eritrea. Data about multidrug resistant bacteria (MDR) prevalence are not present for these countries. However, when entering the European heath care systems, data about colonisation rates regarding highly resistant bacterial pathogens are important. METHODS: We performed a cross-sectional screening in four Swiss refugee centres to determine the colonization rates for MRSA and ESBL- and carbapenemase-producing Enterobacteriaceae...
2017: PloS One
https://www.readbyqxmd.com/read/28085965/assessment-of-corneal-sensation-innervation-and-retinal-nerve-fiber-layer-in-patients-treated-with-multiple-intravitreal-ranibizumab-injections
#5
Gulfidan Bitirgen, Selman Belviranli, Rayaz A Malik, Hurkan Kerimoglu, Gunhal Satirtav, Nazmi Zengin
PURPOSE: To evaluate the effects of repeated intravitreal ranibizumab injections on corneal sensitivity, corneal sub-basal nerve plexus (SBNP) and peripapillary retinal nerve fiber layer (RNFL) thickness in patients with neovascular age-related macular degeneration (AMD). METHODS: Sixty-six eyes of 33 patients who had received unilateral repeated intravitreal ranibizumab injections (0.5 mg/0.05 ml) for the treatment of AMD and 25 eyes of 25 healthy subjects were included in the study...
2017: PloS One
https://www.readbyqxmd.com/read/28085964/aminoalcohol-induced-activation-of-organophosphorus-hydrolase-oph-towards-diisopropylfluorophosphate-dfp
#6
Dandan Li, Yunze Zhang, Haitao Song, Liangqiu Lu, Deli Liu, Yongze Yuan
Aminoalcohols have been addressed as activating buffers for alkaline phosphatase. However, there is no record on the buffer activation regarding organophosphorus hydrolase (OPH). Here we reported the activating effects of aminoalcohols on OPH-catalyzed hydrolysis of diisopropylfluorophosphate (DFP), an analog molecule of G-type warfare agents. The kinetic parametors kcat, Vmax and kcat/Km in the OPH reaction were remarkably increased in the buffers (pH 8.0, 25°C) containing aminoalcohols with C2 between nitrogen (N) and oxygen (O) in their structures, including triethanolamine (TEA), diethanolamine, monoethanolamine, 1-amino-2-propanol, 2-amino-2-methyl-1-propanol, and triisopropanolamine...
2017: PloS One
https://www.readbyqxmd.com/read/28085963/testicular-dysgenesis-syndrome-and-long-lasting-epigenetic-silencing-of-mouse-sperm-genes-involved-in-the-reproductive-system-after-prenatal-exposure-to-dehp
#7
Ludwig Stenz, Jessica Escoffier, Rita Rahban, Serge Nef, Ariane Paoloni-Giacobino
The endocrine disruptor bis(2-ethylhexyl) phthalate (DEHP) has been shown to exert adverse effects on the male animal reproductive system. However, its mode of action is unclear and a systematic analysis of its molecular targets is needed. In the present study, we investigated the effects of prenatal exposure to 300 mg/kg/day DEHP during a critical period for gonads differentiation to testes on male mice offspring reproductive parameters, including the genome-wide RNA expression and associated promoter methylation status in the sperm of the first filial generation...
2017: PloS One
https://www.readbyqxmd.com/read/28085962/do-large-carnivores-and-mesocarnivores-have-redundant-impacts-on-intertidal-prey
#8
Justin P Suraci, Michael Clinchy, Liana Y Zanette
The presence of large carnivores can affect lower trophic levels by suppressing mesocarnivores and reducing their impacts on prey. The mesopredator release hypothesis therefore predicts prey abundance will be higher where large carnivores are present, but this prediction assumes limited dietary overlap between large and mesocarnivores. Where dietary overlap is high, e.g., among omnivorous carnivore species, or where prey are relatively easily accessible, the potential exists for large and mesocarnivores to have redundant impacts on prey, though this possibility has not been explored...
2017: PloS One
https://www.readbyqxmd.com/read/28085961/association-between-immune-markers-and-surrogate-markers-of-cardiovascular-disease-in-hiv-positive-patients-a-systematic-review
#9
Alinda G Vos, Annelieke Hulzebosch, Diederick E Grobbee, Roos E Barth, Kerstin Klipstein-Grobusch
BACKGROUND: HIV infection is associated with an increased risk of cardiovascular disease (CVD). Chronic low-grade immune activation is likely one of the driving mechanisms. This systematic review provides an overview of the evidence addressing the relation between immune markers and surrogate markers of CVD (except CIMT) in HIV infection. METHODS: A systematic search was performed in PubMed, Embase and Cochrane Library identifying all articles from 1996 to April 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28085960/decreasing-seroprevalence-of-measles-antibodies-after-vaccination-possible-gap-in-measles-protection-in-adults-in-the-czech-republic
#10
Jan Smetana, Roman Chlibek, Irena Hanovcova, Renata Sosovickova, Libuse Smetanova, Peter Gal, Petr Dite
AIMS: In recent years, Europe has recorded an increase in the number of measles outbreaks despite the implementation of vaccination into the National Immunization Programs. The Czech Republic introduced vaccination against measles into National Immunization Program in 1969. The aim of this study was to determine seroprevalence of IgG antibodies against measles in adults. METHODS: Our study was designed as a prospective, multicenter cohort study. Samples of blood were taken from adults aged 18 years and over...
2017: PloS One
https://www.readbyqxmd.com/read/28085959/allelopatic-potential-of-dittrichia-viscosa-l-w-greuter-mediated-by-vocs-a-physiological-and-metabolomic-approach
#11
Fabrizio Araniti, Antonio Lupini, Francesco Sunseri, Maria Rosa Abenavoli
Dittrichia viscosa (L.) W. Greuter is a pioneer species belonging to the Compositae family. It is widespread in the Mediterranean basin, where it is considered invasive. It is a source of secondary metabolites, playing an important ecological role. D. viscosa plant extracts showed a phytotoxic activity on several physiological processes of different species. In the current study, the allelopathic potential of D. viscosa VOCs, released by its foliage, was evaluated on seed germination and root growth of lettuce...
2017: PloS One
https://www.readbyqxmd.com/read/28085957/25-hydroxivitamin-d-serum-concentration-not-free-and-bioavailable-vitamin-d-is-associated-with-disease-activity-in-systemic-lupus-erythematosus-patients
#12
Marina Eloi, Daniela Vargas Horvath, João Carlos Ortega, Mônica Simon Prado, Luis Eduardo Coelho Andrade, Vera Lúcia Szejnfeld, Charlles Heldan de Moura Castro
We aim to evaluate the prevalence of vitamin D deficiency in patients with systemic lupus erythematosus (SLE) and investigate the association between total, free and bioavailable vitamin D serum concentrations and disease activity. Patients with SLE (ACR 1997) consecutively seen at UNIFESP's outpatient's clinics had disease activity measured after clinical and laboratory evaluation using SLEDAI (Systemic Lupus Erythematosus Disease Activity Index). 25-hydroxyvitamin D (25(OH)D) serum concentrations measured by chemiluminescence and vitamin D binding protein (DBP) measured by ELISA were used to calculate free and bioavailable vitamin D...
2017: PloS One
https://www.readbyqxmd.com/read/28085956/mirnas-predict-the-prognosis-of-patients-with-triple-negative-breast-cancer-a-meta-analysis
#13
Yanli Liu, Yuchao Zhang, Qingfu Li, Junfang Li, Xiaotian Ma, Jinfang Xing, Shouhua Rong, Zhong Wu, Yuan Tian, Jing Li, Liting Jia
PURPOSE: miRNAs are stable and can be extracted from tissues, blood and other body fluid without degradation. miRNAs are abnormally expressed in the presence of a pathological status, including cancer. Therefore, miRNAs are ideal biomarkers for cancer diagnosis and prognosis. Patients with triple negative breast cancer (TNBC) suffer the worst prognosis, although great efforts have been made. Many studies have investigated the role of miRNAs in predicting the outcomes of TNBC patients for better adjustment of treatment...
2017: PloS One
https://www.readbyqxmd.com/read/28085955/an-empirical-assessment-of-transgene-flow-from-a-bt-transgenic-poplar-plantation
#14
Jianjun Hu, Jin Zhang, Xingling Chen, Jinhui Lv, Huixia Jia, Shutang Zhao, Mengzhu Lu
To assess the possible impact of transgenic poplar plantations on the ecosystem, we analyzed the frequency and distance of gene flow from a mature male transgenic Populus nigra plantation carrying the Bacillus thuringiensis toxin gene (Bt poplar) and the survival of Bt poplar seeds. The resultant Bt poplar seeds occurred at a frequency of ~0.15% at 0 m to ~0.02% at 500 m from the Bt poplar plantation. The germination of Bt poplar seeds diminished within three weeks in the field (germination rate from 68% to 0%) compared to 48% after three weeks of storage at 4°C...
2017: PloS One
https://www.readbyqxmd.com/read/28085954/leptin-induced-endothelium-independent-vasoconstriction-in-thoracic-aorta-and-pulmonary-artery-of-spontaneously-hypertensive-rats-role-of-calcium-channels-and-stores
#15
Samantha Gomart, Caroline Gaudreau-Ménard, Pascale Jespers, Omer Gurkan Dilek, Emeline Hupkens, Aliénor Hanthazi, Robert Naeije, Christian Melot, Nathalie Labranche, Laurence Dewachter, Kathleen Mc Entee
Decreased leptin-induced endothelium-dependent vasodilation has been reported in spontaneously hypertensive rats (SHR). Here, we report leptin-induced vasoconstriction in endothelium-denuded pulmonary artery and thoracic aorta from SHR and sought to characterize calcium handling underlying these mechanisms. Vasoreactivity to leptin was evaluated on pulmonary artery and thoracic aorta rings from 18 weeks old male SHR with or without calcium free medium, caffeine + thapsigargin + carbonyl cyanide-4-trifluoromethoxyphenylhydrazone emptying intracellular calcium stores, nifedipine a voltage-gated calcium channel inhibitor, SKF-96365 a transient receptor potential cation channels (TRPC) inhibitor, wortmaninn, a phosphatidylinositide 3-kinases (PI3K) inhibitor, or PD98059 a mitogen-activated protein kinase kinase (MAPKK) inhibitor...
2017: PloS One
https://www.readbyqxmd.com/read/28085953/classification-of-partial-discharge-measured-under-different-levels-of-noise-contamination
#16
Wong Jee Keen Raymond, Hazlee Azil Illias, Ab Halim Abu Bakar
Cable joint insulation breakdown may cause a huge loss to power companies. Therefore, it is vital to diagnose the insulation quality to detect early signs of insulation failure. It is well known that there is a correlation between Partial discharge (PD) and the insulation quality. Although many works have been done on PD pattern recognition, it is usually performed in a noise free environment. Also, works on PD pattern recognition in actual cable joint are less likely to be found in literature. Therefore, in this work, classifications of actual cable joint defect types from partial discharge data contaminated by noise were performed...
2017: PloS One
https://www.readbyqxmd.com/read/28085952/metabolic-dysregulation-in-hepacivirus-infection-of-common-marmosets-callithrix-jacchus
#17
Cordelia Manickam, Lynn Wachtman, Amanda J Martinot, Luis D Giavedoni, R Keith Reeves
Chronic hepatitis C has been associated with metabolic syndrome that includes insulin resistance, hepatic steatosis and obesity. These metabolic aberrations are risk factors for disease severity and treatment outcome in infected patients. Experimental infection of marmosets with GBV-B serves as a tangible, small animal model for human HCV infection, and while virology and pathology are well described, a full investigation of clinical disease and the metabolic milieu is lacking. In this study six marmosets were infected intravenously with GBV-B and changes in hematologic, serum biochemical and plasma metabolic measures were investigated over the duration of infection...
2017: PloS One
https://www.readbyqxmd.com/read/28085951/association-of-body-mass-index-with-timing-of-death-during-tuberculosis-treatment
#18
Hsin-Hao Lai, Yun-Ju Lai, Yung-Feng Yen
BACKGROUND: The association between body mass index and mortality in patients with tuberculosis has not been extensively studied, and the existing evidence is inconsistent. This study aimed to investigate the impact of body mass index on timing of death in patients with tuberculosis. METHODS: All Taiwanese adults with tuberculosis in Taipei, Taiwan, were included in a retrospective cohort study in 2011-2012. Multinomial logistic regression was used to evaluate the association between body mass index and timing of death in patients with tuberculosis...
2017: PloS One
https://www.readbyqxmd.com/read/28085950/impact-of-drd2-ankk1-and-comt-polymorphisms-on-attention-and-cognitive-functions-in-schizophrenia
#19
Irene Nkam, Nicolas Ramoz, Florence Breton, Jasmina Mallet, Philip Gorwood, Caroline Dubertret
BACKGROUND: Cognitive deficits such as poor selective attention and executive functions decline have been reported in patients with schizophrenia. Many studies have emphasized the role of dopamine in regulating cognitive functions in the general population as well as in schizophrenia. However, the relationship between cognitive processes, schizophrenia and dopaminergic candidate genes is an original approach given interesting results. The purpose of the current exploratory study was to examine the interaction of dopaminergic genes (coding for dopamine receptor D2, DRD2, and for Catecholamine-O-Methyl-Transferase, COMT) with the diagnostic of schizophrenia in (i) the executive control of attention, (ii) selective attention, and (iii) executive functions...
2017: PloS One
https://www.readbyqxmd.com/read/28085949/the-association-between-exposure-to-environmental-bisphenol-a-and-gonadotropic-hormone-levels-among-men
#20
Hong Liang, Wenping Xu, Jianping Chen, Huijuan Shi, Jiang Zhu, Xiaoqin Liu, Jian Wang, Maohua Miao, Wei Yuan
Bisphenol A (BPA) is an extensively used chemical with endocrine disrupting properties. Although animal and in vivo studies have suggested possible effects of BPA on levels of gonadotropic hormones, human studies are limited and inconclusive. The study examined whether environmental BPA exposure was associated with gonadotropic hormones levels in men. A total of 560 men aged 18-55 years were recruited from Sandu County, Guizhou Province, China. We collected urine samples for measurement of BPA, and blood samples for measurement of reproductive hormones...
2017: PloS One
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