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https://www.readbyqxmd.com/read/28731986/the-effect-of-sex-on-heart-rate-variability-at-high-altitude
#1
Christopher John Boos, Emma Vincent, Adrian Mellor, John O'Hara, Caroline Newman, Richard Cruttenden, Phylip Scott, Mark Cooke, Jamie Matu, David Richard Woods
There is evidence to suggest that high altitude (HA) exposure leads to a fall in heart rate variability (HRV) that is linked to the development of acute mountain sickness (AMS). The effects of sex on changes in HRV at HA and its relationship to AMS are unknown. METHODS: HRV (5-minute single lead ECG) was measured in 63 healthy adults (41 men and 22 women) aged 18-56 years at sea level (SL) and during a HA trek at 3619m, 4600m and 5140m respectively. The main effects of altitude (SL, 3619, 4600 and 5140m) and sex (men vs women) and their potential interaction were assessed using a Factorial Repeated Measures ANOVA...
July 20, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28730980/validation-of-spectrophotometric-methods-for-the-determination-of-total-polyphenol-and-total-flavonoid-content
#2
Petra Matić, Marija Sabljić, Lidija Jakobek
The aim of this study was to validate spectrophotometric methods for the measurement of total polyphenol (TP;via the Folin–Ciocalteu method) and total flavonoid (TF) content [via the aluminum chloride (AlCl₃) method]. Validation parameters of these methods were determined, including linearity, sensitivity, precision (intra-assay and intermediate), accuracy, LOD, and LOQ. For the validation process, groups of polyphenol standards were used, including phenolic acids (gallic, p-coumaric, caffeic, and chlorogenic acids), flavan-3-ols [(+)-catechin and procyanidins B1 and B2], flavonols (quercetin and quercetin-3-rutinoside), and dihydrochalcones (phloretin and phloretin-2-glucoside)...
July 20, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28730361/the-effect-of-different-surface-materials-on-runoff-quality-in-permeable-pavement-systems
#3
Haiyan Li, Zhifei Li, Xiaoran Zhang, Zhuorong Li, Dongqing Liu, Tanghu Li, Ziyang Zhang
To investigate the effect of different permeable pavement surface materials on the removal of pollutants from urban storm-runoff, six commonly surface materials (porous asphalt, porous concrete, cement brick, ceramic brick, sand base brick, and shale brick) were selected in this study and the research was carried out by column experiments. Except the concentrations of total suspended solids (TSS), chemical oxygen demand (COD), ammonia nitrogen (NH4-N), nitrate nitrogen (NO3-N), total nitrogen (TN), and total phosphorus (TP) in the influent and effluent that were measured, the removal mechanism of pollutants was discussed further...
July 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28728364/growth-rate-carcass-characteristics-and-meat-quality-of-growing-lambs-fed-buckwheat-or-maize-silage
#4
Gurhan Keles, Veli Kocaman, Ahmet Onder Ustundag, Asli Zungur, Mursel Ozdogan
Objective: This study evaluated inclusion of buckwheat silage to the diet of growing lambs in terms of meat quality as compared to maize silage. Methods: Buckwheat, rich in total phenols (TP, 33 g/kg dry matter (DM)) harvested at the end of the milk stage and ensiled in 40 kg plastic bags after wilting (294 g/kg silage DM). A total of 18 growing lambs were individually fed isonitrogenous and isoenergetic total mixed rations (TMR) for 75 d that either contains buckwheat or maize silage at DM proportions of 0...
June 27, 2017: Asian-Australasian Journal of Animal Sciences
https://www.readbyqxmd.com/read/28728124/thin-ferrihydrite-sediment-capping-sequestrates-phosphorus-experiencing-redox-conditions-in-a-shallow-temperate-lacustrine-wetland
#5
Yuanchun Zou, Michael R Grace, Keryn L Roberts, Xiaofei Yu
Synthesized ferrihydrite (Fh) with the dosages of 0.3, 0.6 and 0.9 cm thickness (labeled as Fh, 2Fh and 3Fh respectively, equivalent to 248-774 g/m(2)) were deployed to serve as the reactive capping layer covering the Ornamental Lake sediments, the Royal Botanic Garden of Melbourne. The sediments were exposed to an alternating regime of oxic/anoxic conditions using laboratory reactors for 45 days. Dynamics of dissolved oxygen (DO), pH, filterable reactive phosphorus (FRP), filterable ammonium (NH4(+)), nitrate and nitrite (NOx), total dissolved nitrogen (TDN) and dissolved iron (Fe) of overlying water were examined...
July 12, 2017: Chemosphere
https://www.readbyqxmd.com/read/28727773/the-tradition-algorithm-approach-underestimates-the-prevalence-of-serodiagnosis-of-syphilis-in-hiv-infected-individuals
#6
Bin Chen, Xiuming Peng, Tiansheng Xie, Changzhong Jin, Fumin Liu, Nanping Wu
Currently, there are three algorithms for screening of syphilis: traditional algorithm, reverse algorithm and European Centre for Disease Prevention and Control (ECDC) algorithm. To date, there is not a generally recognized diagnostic algorithm. When syphilis meets HIV, the situation is even more complex. To evaluate their screening performance and impact on the seroprevalence of syphilis in HIV-infected individuals, we conducted a cross-sectional study included 865 serum samples from HIV-infected patients in a tertiary hospital...
July 20, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28726661/-heart-rate-variability-in-children-with-false-chords-in-the-left-cardiac-ventricular
#7
A Kuleshov
We examined 64 children with false tendons in the left cardiac ventricular. The research included evaluation of time and frequency domain parameters of the heart rhythm with cardiointervalography. The parameter changes were noted. Thus, sympathetic vegetative system (VS) part prevalence was present in boys and characterized by decreasing of SDNN when compared with control data (85,4±5,8 и 158,2 ±25,6, р<0,05). rMSSD and PNN50%, which are responsible for parasympathetic VS part have the tendency to increasing in girls...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28726321/the-prevalence-of-transpancreatic-common-hepatic-artery-and-coexisting-variant-anatomy
#8
Kousei Ishigami, Akihiro Nishie, Yoshiki Asayama, Yasuhiro Ushijima, Yukihisa Takayama, Daisuke Okamoto, Nobuhiro Fujita, Tomoharu Yoshizumi, Norifumi Harimoto, Takao Ohtsuka, Kohei Nakata, Hiroshi Honda
PURPOSE: We studied the prevalence of the transpancreatic common hepatic artery (tp-CHA) and coexisting variant anatomy. MATERIALS AND METHODS: The study group comprised 788 consecutive liver transplant donor candidates who had undergone thin-section multidetector-row computed tomography (MDCT) studies to investigate vascular anatomy. Multiplanar reformatted (MPR) images obtained from the arterial phase were retrospectively reviewed to assess the presence/absence of the tp-CHA...
July 20, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28726227/modelling-the-effects-of-water-diversion-and-combined-sewer-overflow-on-urban-inland-river-quality
#9
Xianyong Gu, Zhenliang Liao, Guangqian Zhang, Jiaqiang Xie, Jin Zhang
In order to assist and optimize the operation of a clean water diversion project for the medium-sized inland rivers in Chaohu, China, an integrated hydrodynamic and water quality model was used in this study. Sixteen diversion scenarios and five sewage interception scenarios were defined to assess the improvement of water quality parameters including ammonia nitrogen (NH3-N), total phosphorus (TP) and chemical oxygen demand (COD) under different diverted water flows, diverting times, diverting points, diverting routines and sewage interception proportions...
July 20, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28726224/spatial-scale-and-seasonal-dependence-of-land-use-impacts-on-riverine-water-quality-in-the-huai-river-basin-china
#10
Jianfeng Liu, Xiang Zhang, Bi Wu, Guoyan Pan, Jing Xu, Shaofei Wu
Land use pattern is an effective reflection of anthropic activities, which are primarily responsible for water quality deterioration. A detailed understanding of relationship between water quality and land use is critical for effective land use management to improve water quality. Linear mixed effects and multiple regression models were applied to water quality data collected from 2003 to 2010 from 36 stations in the Huai River basin together with topography and climate data, to characterize the land use impacts on water quality and their spatial scale and seasonal dependence...
July 19, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28726157/anodal-transcranial-direct-current-stimulation-over-the-left-temporal-pole-restores-normal-visual-evoked-potential-habituation-in-interictal-migraineurs
#11
Francesca Cortese, Francesco Pierelli, Ilaria Bove, Cherubino Di Lorenzo, Maurizio Evangelista, Armando Perrotta, Mariano Serrao, Vincenzo Parisi, Gianluca Coppola
BACKGROUND: Neuroimaging data has implicated the temporal pole (TP) in migraine pathophysiology; the density and functional activity of the TP were reported to fluctuate in accordance with the migraine cycle. Yet, the exact link between TP morpho-functional abnormalities and migraine is unknown. Here, we examined whether non-invasive anodal transcranial direct current stimulation (tDCS) ameliorates abnormal interictal multimodal sensory processing in patients with migraine. METHODS: We examined the habituation of visual evoked potentials and median nerve somatosensory evoked potentials (SSEP) before and immediately after 20-min anodal tDCS (2 mA) or sham stimulation delivered over the left TP in interictal migraineurs...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28725596/utility-of-trigger-point-injection-as-an-adjunct-to-physical-therapy-in-men-with-chronic-prostatitis-chronic-pelvic-pain-syndrome
#12
Nicholas N Tadros, Anup B Shah, Daniel A Shoskes
BACKGROUND: Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is often associated with pelvic floor muscle spasm. While pelvic floor physical therapy (PFPT) is effective, some men are unable to resolve their symptoms and have residual trigger points (TPs). TP injection has been used for treatment in several neuromuscular pain syndromes. The objective of this study was to examine the efficacy and side effects of TP injection in men with CP/CPPS and pelvic floor spasm refractory to PT...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28723853/high-frequency-ultrasound-description-of-sacral-tissue-characteristics-in-healthy-adults
#13
Ruth S Burk, Christine M Schubert, Anathea Pepperl, Mary Jo Grap
OBJECTIVES: The purpose of this study was to describe selected sacral tissue characteristics in a convenience sample of healthy volunteer subjects. DESIGN: Descriptive. SAMPLE AND SETTING: Fifty healthy volunteers in a clinical learning center in a school of nursing. METHODS: Sacral scans were obtained using a 20-MHz ultrasound scanning system in 3 positions: prone and 60° and 90° side-lying from the back. The images were analyzed by software in the ultrasound program using quantitative parameters of dermal thickness and density (dermal median intensity and derived number of low-echogenic pixels to total pixels [LEP:TP] ratio)...
July 18, 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28721685/breaking-down-unitization-is-the-whole-greater-than-the-sum-of-its-parts
#14
Maria C D'Angelo, Alix Noly-Gandon, Arber Kacollja, Morgan D Barense, Jennifer D Ryan
Memory impairments are often observed in aging. Specifically, older adults have difficulty binding together disparate elements (relational memory). We have recently shown that a cognitive strategy known as unitization can mitigate impaired relational learning in the transverse patterning task (TP) in both amnesia and healthy aging. This strategy allows items to be fused together through an interaction such that one item acts upon another. In the context of TP, unitization is comprised of three component processes: (1) fusion, (2) motion, and (3) semantic comprehension of action/consequence sequences...
July 18, 2017: Memory & Cognition
https://www.readbyqxmd.com/read/28721504/microbial-community-structure-and-function-decoupling-across-a-phosphorus-gradient-in-streams
#15
Erick S LeBrun, Ryan S King, Jeffrey A Back, Sanghoon Kang
Phosphorus (P) is a key biological element with important and unique biogeochemical cycling in natural ecosystems. Anthropogenic phosphorus inputs have been shown to greatly affect natural ecosystems, and this has been shown to be especially true of freshwater systems. While the importance of microbial communities in the P cycle is widely accepted, the role, composition, and relationship to P of these communities in freshwater systems still hold many secrets. Here, we investigated combined bacterial and archaeal communities utilizing 16S ribosomal RNA (rRNA) gene sequencing and computationally predicted functional metagenomes (PFMs) in 25 streams representing a strong P gradient...
July 18, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28720156/fmr1-cgg-repeat-expansion-mutation-detection-and-linked-haplotype-analysis-for-reliable-and-accurate-preimplantation-genetic-diagnosis-of-fragile-x-syndrome
#16
Indhu-Shree Rajan-Babu, Mulias Lian, Felicia S H Cheah, Min Chen, Arnold S C Tan, Ethiraj B Prasath, Seong Feei Loh, Samuel S Chong
Fragile X mental retardation 1 (FMR1) full-mutation expansion causes fragile X syndrome. Trans-generational fragile X syndrome transmission can be avoided by preimplantation genetic diagnosis (PGD). We describe a robust PGD strategy that can be applied to virtually any couple at risk of transmitting fragile X syndrome. This novel strategy utilises whole-genome amplification, followed by triplet-primed polymerase chain reaction (TP-PCR) for robust detection of expanded FMR1 alleles, in parallel with linked multi-marker haplotype analysis of 13 highly polymorphic microsatellite markers located within 1 Mb of the FMR1 CGG repeat, and the AMELX/Y dimorphism for gender identification...
July 19, 2017: Expert Reviews in Molecular Medicine
https://www.readbyqxmd.com/read/28718977/effect-of-simulated-gastrointestinal-digestion-and-fermentation-on-polyphenolic-content-and-bioactivity-of-brown-seaweed-phlorotannin-rich-extracts
#17
Giulia Corona, Maria Magdalena Coman, Yuxuan Guo, Sarah Hotchkiss, Chris Gill, Parveen Yaqoob, Jeremy P E Spencer, Ian Rowland
SCOPE: Unlike other classes of polyphenols, there is a lack of knowledge regarding brown seaweed phlorotannins and their bioactivity. We investigated the impact of in vitro gastrointestinal digestion and colonic fermentation on the bioactivity of a seaweed phlorotannin extract from Ascophyllum nodosum and its high molecular weight (HMW) and low molecular weight (LMW) fractions. METHODS AND RESULTS: The highest phlorotannin and total polyphenol (TP) concentration was observed in the HMW fraction...
July 18, 2017: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/28718017/occurrence-and-transformations-of-carbon-nitrogen-and-phosphorus-related-to-particle-size-fraction-of-sweet-potato-starch-wastewater-during-hydrolytic-acidification-processes
#18
Haixiao Zhu, Long Qin, Yue Hu, Dongyang Wei, Zibin Hai, Aimin Li, Xianchuan Xie, Chao Han
Sweet potato starch wastewater (SPSW) is an industrial food-processing waste product, which is a significant pollution source due to its high chemical oxygen demand (COD), nitrogen, and phosphorus loads. The influence of hydrolytic acidification (HA) process on C, N, and P as well as other main parameters were evaluated. It is essential to treat these wastewaters with effective methods such as HA, a general pretreatment application. In this study, we investigate the scientific link between the changes of different fractions of C, N, and P with particle size distribution in response to the newly introduced HA process...
July 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28716086/dynamics-in-multiplicity-of-plasmodium-falciparum-infection-among-children-with-asymptomatic-malaria-in-central-ghana
#19
Akua Kyerewaa Botwe, Kwaku Poku Asante, George Adjei, Samuel Assafuah, David Dosoo, Seth Owusu-Agyei
BACKGROUND: The determinants of malaria parasite virulence is not entirely known, but the outcome of malaria infection (asymptomatic or symptomatic) has been associated with carriage of distinct parasite genotypes. Alleles considered important for erythrocyte invasion and selected as candidate targets for malaria vaccine development are increasingly being shown to have distinct characteristics in infection outcomes. Any unique/distinct patterns or alleles linked to infection outcome should be reproducible for a given malaria-cohort regardless of location, time or intervention...
July 17, 2017: BMC Genetics
https://www.readbyqxmd.com/read/28715769/high-throughput-profiling-and-analysis-of-antibiotic-resistance-genes-in-east-tiaoxi-river-china
#20
Ji Zheng, Ruixia Gao, Yuanyuan Wei, Tao Chen, Jiqing Fan, Zhenchao Zhou, Tiimub Benjamin Makimilua, Yanan Jiao, Hong Chen
The rapid human activities and urbanization exacerbate the human health risks induced by antibiotic resistance genes (ARGs). In this study, the profiling of ARGs was investigated using high-throughput qPCR from water samples of 13 catchment areas in East Tiaoxi River, China. High prevalence of ARGs indicated significant antibiotic resistance pollution in the research area (absolute abundance: 6.1 × 10(8)-2.1 × 10(10) copies/L; relative abundance: 0.033-0.158 copies/cell). Conventional water qualities (COD, TN, TP, NH3-N), bacterial communities and mobile gene elements (MGEs) were detected and analyzed as factors of ARGs shift...
July 14, 2017: Environmental Pollution
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