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The Effects of Vitamin D Supplementation on Biomarkers of Inflammation and Oxidative Stress Among Women with Polycystic Ovary Syndrome: A Systematic Review and Meta-Analysis of Randomized Controlled Trials.

The current systematic review and meta-analysis of randomized controlled trials (RCTs) was conducted to summarize the effect of vitamin D supplementation on biomarkers of inflammation and oxidative stress among women with polycystic ovary syndrome (PCOS). Cochrane library, Embase, PubMed, and Web of Science database were searched to identify related randomized-controlled articles (RCTs) published up to November 2017. Two researchers assessed study eligibility, extracted data, and evaluated risk of bias of included RCTs, independently. To check heterogeneity Q-test and Istatistics were used. Data were pooled by using the random-effect model and standardized mean difference (SMD) was considered as summary effect size. Seven RCTs were included into our meta-analysis. The findings showed that vitamin D supplementation in women with PCOS significantly decreased high-sensitivity C-reactive protein (hs-CRP) (SMD -1.03; 95% CI, -1.58, -0.49; p <0.001) and malondialdehyde (MDA) (SMD -1.64, 95% CI -2.26 to -1.02, p <0.001), and significantly increased total antioxidant capacity (TAC) levels (SMD 0.86, 95% CI 0.08 to 1.64, p=0.03). Vitamin D supplementation had no significant effect on nitric oxide (NO) (SMD 0.11, 95% CI -0.44 to 0.66, p=0.69) and total glutathione (GSH) levels (SMD 0.54, 95% CI -0.20 to 1.28, p=0.15). Overall, the current meta-analysis demonstrated that vitamin D supplementation to women with PCOS resulted in an improvement in hs-CRP, MDA and TAC, but did not affect NO and GSH levels.

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Perceptually Regulated Exercise Test Allows Determination of V˙O2max and Ventilatory Threshold But Not Respiratory Compensation Point In Trained Runners.

This study aimed to investigate the differences in maximal oxygen uptake (V̇O) and submaximal thresholds between a standard graded exercise test (GXT) and a perceptually regulated graded exercise test (PRGXT) in trained runners. Eleven well-trained middle- to long-distance runners performed both tests in a randomized order. PRGXT used incremental "clamps" of rating of perceived exertion (RPE) over 10×1-min stages on an automated treadmill equipped with a sonar sensor allowing them to change their running speed instantly and in a natural way. GXT used fixed 1 kmhincrement every minute. Ventilatory threshold (VT) and respiratory compensation point (RCP) were determined using ventilatory equivalents. No differences were found in V̇O(68.0 (5.3) vs. 69.5 (5.9) ml·min·kg, p=0.243), minute ventilation (V̇E) (159.4 (35.0) vs. 162.4 (33.7) l·min, p=0.175), heart rate (HR) (188.4 (6.9) vs. 190.7 (5.2) bpm, p=0.254) and speed (21.0 (1.7) vs. 21.1 (2.3) km·h-, p=0.761) between GXT and PRGXT. At VT, there were no significant differences between GXT and PRGXT for any outcome variables. For 8 of 11 subjects, it was not possible to determine RCP from ventilatory equivalent in PRGXT. GXT appears more relevant for a comprehensive gas analysis in trained runners.

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The Pituitary-Thyroid Axis and Prolactin Secretion in Hemodialysis Patients in Two Endemic Regions of Eastern Germany.

Endocrine disorders of the pituitary axes are frequent in patients with hemodialysis (CKD5D). The aim of this multicenter study (Leipzig (L), Quedlinburg and Blankenburg in the Harz region (Hz)) in CKD5D patients was to evaluate influences of CKD5D related factors, morphological and biochemical parameters, and serum iodine and prolactin concentrations on the pituitary-thyroid axis.

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Time-frequency Features for Impedance Cardiography Signals During Anesthesia Using Different Distribution Kernels.

This works investigates the time-frequency content of impedance cardiography signals during a propofol-remifentanil anesthesia.

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Association of Antibiotic Utilization and Neurodevelopmental Outcomes among Extremely Low Gestational Age Neonates without Proven Sepsis or Necrotizing Enterocolitis.

 The objective is to evaluate the association between antibiotic utilization and neurodevelopmental outcomes at 18 to 21 months' corrected age among extremely low gestational age neonates without culture-proven sepsis or necrotizing enterocolitis (NEC).

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Scope and limitations of carbohydrate hydrolysis for de novo glycan sequencing using a hydrogen peroxide/metallopeptide-based glycosidase mimetic.

Acidic hydrolysis is commonly used as a first step to break down oligo- and polysaccharides into monosaccharide units for structural analysis. While easy to set up and amenable to mass spectrometry detection, acid hydrolysis is not without its drawbacks. For example, ring-destruction side reactions and degradation products, along with difficulties in optimizing conditions from analyte to analyte, greatly limits its broad utility. Herein we report studies on a hydrogen peroxide/CuGGH metallopeptide-based glycosidase mimetic design for a more efficient and controllable carbohydrate hydrolysis. A library of methyl glycosides consisting of ten common monosaccharide substrates, along with oligosaccharide substrates, was screened with the artificial glycosidase for hydrolytic activity in a high-throughput format with a robotic liquid handling system. The artificial glycosidase was found to be active towards most screened linkages, including alpha- and beta-anomers, thus serving as a potential alternative method for traditional acidic hydrolysis approaches of oligosaccharides.

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Factor structure and psychometric properties of a Romanian translation of the drive for Muscularity Scale (DMS) in university men.

We examined the psychometric properties of a Romanian translation of the 15-item Drive for Muscularity Scale (DMS). Male university students from Romania (N = 343) completed the DMS, as well as measures of self-esteem, body appreciation, and muscle discrepancy. Exploratory factor analysis indicated that DMS scores reduced to two factors that related to muscularity-oriented attitudes and behaviours, with both first-order factors loading onto a higher-order factor. However, confirmatory factor analysis indicated that a model with two first-order factors and a higher-order factor had poor fit. A two-factor model without a higher-order construct achieved acceptable but mediocre fit. Scores on the two-factor DMS model had adequate internal consistency and demonstrated acceptable convergent validity (significant correlations with self-esteem, body appreciation, and muscle discrepancy). These results provide support for a two-factor model of DMS scores in a Romanian-speaking sample and extends the availability of the DMS to a rarely-examined linguistic group.

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Improving the first hyperpolarizability of anthracene through interaction with HX molecules (XF, Cl, Br): A theoretical study.

The variations in nonlinear optical activity (NLO) of anthracene (CH) was investigated via intermolecular interactions between CHand HX molecules (XF, Cl and Br) using B3LYP-D3 method at 6-311++G(d,p) basis set. The stabilization of those complexes was investigated via vibrational analysis, quantum theory of atoms in molecules, molecular electrostatic potential, natural bond orbitals and symmetry-adapted perturbation theory (SAPT) analysis. Furthermore, the optical spectra and the first hyperpolarizabilities of CH⋯HX complexes were computed. The adsorption of hydrogen halide through CH⋯HX complex formation, didn't change much the linear optical activities of CHmolecule, but the magnitude of the first hyperpolarizability of the CH⋯HX complexes to be as much as that of urea.

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Comprehensive characteristics of the anticoagulant activity of dabigatran in relation to its plasma concentration.

Issues with laboratory measurement of dabigatran include: 1. Do coagulation assays reflect dabigatran plasma concentrations? 2. Do samples from patients treated with dabigatran have the same coagulability as dabigatran-spiked samples from healthy volunteers? 3. What is the long-term stability of dabigatran after storage at -80 °C? This study aims to evaluate these questions.

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Progranulin facilitates the increase of platelet count in immune thrombocytopenia.

Progranulin (PGRN) is emerging as a critical immune mediator involved in a variety of autoimmune disorders. However, its role in immune thrombocytopenia (ITP) remains unclear.

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