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Effects of live yeast on differential genetic and functional attributes of rumen microbiota in beef cattle

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Journal of Animal Science and Biotechnology 2019年第4期10卷 1101-1107页

作者： Ibukun M.Ogunade Jerusha Lay kenneth Andries Christina J.mc manus Frederick Bebe College of Agriculture Communities and the Environment Kentucky State University

Several studies have evaluated the effects of live yeast supplementation on rumen microbial population;however,its effect on differential microbial genes and their functional potential has not been described. Thus, this study applied shotgun metagenomic sequencing to evaluate the effects of live yeast supplementation on genetic and functional potential of the rumen microbiota in beef cattle. Eight rumen-cannulated Holstein steers were randomly assigned to two treatments in a cross-over design with two 25-day experimental periods and a 10-day wash-out between the two periods. The steers were housed in individual pens and fed 50% concentrate-mix and 50% red clover/orchard hay ad libitum. Treatments were(1) control(CON;basal diet without additive) and(2) yeast(YEA;basal diet plus 15 g/d of live yeast product). Rumen fluid samples were collected at 3, 6, and 9 h after feeding on the last d of each period. Sequencing was done on an Illumina Hi Seq 2500 platform. Dietary yeast supplementation increased the relative abundance of carbohydrate-fermenting bacteria(such as Ruminococcus albus, ***, R. bromii, and R. obeum) and lactate-utilizing bacteria(such as Megasphaera elsdenii, Desulfovibrio desulfuricans, and D. vulgaris). A total of 154 differentially abundant genes(DEGs) were obtained(false discovery rate kyoto Encyclopedia of Genes and Genomes(kEGG) annotation analysis of the DEGs revealed that 10 pathways, including amino sugar and nucleotide sugar metabolism, oxidative phosphorylation, lipopolysaccharide biosynthesis, pantothenate and coenzyme A biosynthesis, glutathione metabolism, beta-alanine metabolism,polyketide sugar unit biosynthesis, protein export, ribosome, and bacterial secretory system, were enriched in steers fed YEA. Annotation analysis of the DEGs in the carbohydrate-active enzymes(CAZy) database revealed that the abundance of genes coding for enzymes belonging to glycoside hydrolases, glycosyltransferases, and carbohydrate bindi

关键词： Functional potential Live yeast Rumen

Synthesis of tungsten ditelluride thin films and highly crystalline nanobelts from pre-deposited reactants

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Tungsten 2020年第3期2卷 321-334页

作者： John B.mc manus Cansu Ilhan Bastien Balsamo Clive Downing Conor P.Cullen Tanja Stimpel‑Lindner Graeme Cunningham Lisanne Peters Lewys Jones Daragh Mullarkey Igor V.Shvets Georg S.Duesberg Niall mcEvoy School of Chemistry Trinity College DublinDublin 2 D02 PN40Ireland AMBER Centre CRANN InstituteTrinity College DublinDublin 2 D02 PN40Ireland SIGMA Clermont UniversitéClermont Auvergne63000 Clermont–FerrandFrance Institute of Physics EIT 2Faculty of Electrical Engineering and Information TechnologyUniversität der Bundeswehr München85579 NeubibergGermany School of Physics Trinity College DublinDublin 2 D02 PN40Ireland

Tungsten ditelluride(WTe_(2))is a layered transition metal dichalcogenide(TMD)that has attracted increasing research inter-est in recent ***_(2) has demonstrated large non-saturating magnetoresistance,potential for spintronic applications and promise as a type-II Weyl *** majority of works on WTe_(2) have relied on mechanically exfoliated flakes from chemical vapour transport(CVT)-grown crystals for their *** producing high-quality samples,this method is hindered by several disadvantages including long synthesis time,high-temperature annealing and an inherent lack of *** this work,a synthesis method is demonstrated that allows the production of large-area polycrystalline films of WTe_(2).This is achieved by the reaction of pre-deposited films of W and Te at a relatively low temperature of 550℃.Sputter X-ray photoelectron spectroscopy reveals the rapid but self-limiting nature of the oxidation of these WTe_(2) films in ambient *** WTe_(2) films are composed of areas of micrometre-sized nanobelts that can be isolated and offer potential as an alternative to CVT-grown *** nanobelts are highly crystalline with low defect densities indicated by transmission electron microscopy and show promising initial electrical results.

关键词： Two-dimensional materials Tungsten ditelluride Film conversion Electrodeposition Nanoelectronics

Self-reported risk of stroke and factors associated with underestimation of stroke risk among older adults with atrial fibrillation: the SAGE-AF study

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Journal of Geriatric Cardiology 2020年第8期17卷 502-509页

作者： Jordy Mehawej Jane Saczynski Jerry H.Gurwitz Hawa O.Abu Benita A.Bamgbade Wei-Jia WANG Tenes Paul katherine Trymbulak Connor Saleeba Zi-Yue WANG Catarina I.kiefe Robert J.Goldberg David D.mc manus Division of Cardiovascular Medicine Department of MedicineUniversity of Massachusetts Medical SchoolWorcesterMAUSA Department of Pharmacy and Health Systems Sciences School of PharmacyNortheastern UniversityBostonMAUSA Department of Population and Quantitative Health Sciences University of Massachusetts Medical SchoolWorcesterMAUSA Division of Geriatric Medicine and Meyers Primary Care Institute University of Massachusetts Medical SchoolWorcesterMAUSA

Background Though engaging patients with atrial fibrillation(AF) in understanding their stroke risk is encouraged by guidelines, little is known regarding AF patients' perceived stroke risk or its relationship with oral anticoagulation(OAC) use. We aim to identify factors associated with underestimation of stroke risk among older patients with AF and relate this to OAC use. Methods Data are from the ongoing SAGE(Systematic Assessment of Geriatric Elements)-AF study, which included older patients(> 65 years) with non-valvular AF and a CHA2 DS2-VASc score of ≥ 2. Participants reported their perceived risk of having a stroke without OAC. We compared the perceived risk to CHA2 DS2-VASc predicted stroke risk and classified participants as "over" or "under" estimators, and identified factors associated with underestimation of risk using multiple logistic regression. Results The average CHA2 DS2-VASc score of 915 participants(average age: 75 years, 47% female, 86% white) was 4.3 ± 1.6, 43% of participants had discordant predicted and self-reported stroke risks. Among the 376 participants at highest risk(CHA2 DS2-VASc score ≥ 5), 46% of participants underestimated their risk. Older participants(≥ 85 years) were more likely and OAC treated patients less likely to underestimate their risk of developing a future stroke than respective comparison groups. Conclusions A significant proportion of study participants misperceived their stroke risk, mostly by overestimating. Almost half of participants at high risk of stroke underestimated their risk, with older patients more likely to do so. Patients on OAC were less likely to underestimate their risk, suggesting that successful efforts to educate patients about their stroke risk may influence treatment choices.

关键词： Anticoagulation Atrial fibrillation Stroke

重组日本血吸虫副肌球蛋白诱导水牛保护性免疫的研究

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中国寄生虫病防治杂志 2000年第4期13卷 282-284页

作者：周金春易新元曾宪芳张顺科曾庆仁蔡春 Joanna Wong Don mc manus 湖南医科大学寄生虫学教研室湖南长沙410078 Tropical Health Program the Queensland Institute of Medical Research

为观察重组日本血吸虫副肌球蛋白 (r Sj97)对水牛的保护效果。 2 0头水牛随机分为佐剂 (Quil A)对照组和抗原 (r Sj97)免疫组。对照组仅注射 Quil A,而免疫组注射 Quil A加 r Sj97,在第 0、2、15周肌肉注射。第 3次免疫后两周经腹部贴... 详细信息

为观察重组日本血吸虫副肌球蛋白 (r Sj97)对水牛的保护效果。 2 0头水牛随机分为佐剂 (Quil A)对照组和抗原 (r Sj97)免疫组。对照组仅注射 Quil A,而免疫组注射 Quil A加 r Sj97,在第 0、2、15周肌肉注射。第 3次免疫后两周经腹部贴片攻击感染 10 0 0条日本血吸虫尾蚴 ,感染后第 49d剖杀冲虫 ,计数虫数和肝卵数。结果显示 ,与对照组相比 ,r Sj97免疫组的减虫率为 49.9% (P<0 .0 5 ) ,肝脏减卵率 5 7.3% (P<0 .0 1)。提示 r Sj97可诱导水牛产生一定程度的抗血吸虫攻击感染的保护性免疫力 ,并具有一定程度的抗病作用 ,进一步证实了副肌球蛋白可作为抗血吸虫病的候选疫苗分子。

关键词：日本血吸虫重组副肌球蛋白免疫水牛

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重组日本血吸虫副肌球蛋白的表达与纯化

湖南医科大学学报 2000年第2期25卷 106-108页

作者：周金春易新元 kalinna BH mc manus DP 湖南医科大学血吸虫病研究长沙410078 The Queensland Institute of Medical Research

用基因重组技术 ,将日本血吸虫副肌球蛋白 (rSj97)基因亚克隆至表达载体pQE30上。在IPTG诱导下 ,重组日本血吸虫副肌球蛋白在大肠杆菌中得以高效表达。通过快速蛋白质液相色谱仪 (FPLC) ,经TALON柱和离子交换柱两步分离纯化 ,获得大量... 详细信息

用基因重组技术 ,将日本血吸虫副肌球蛋白 (rSj97)基因亚克隆至表达载体pQE30上。在IPTG诱导下 ,重组日本血吸虫副肌球蛋白在大肠杆菌中得以高效表达。通过快速蛋白质液相色谱仪 (FPLC) ,经TALON柱和离子交换柱两步分离纯化 ,获得大量高纯度的重组日本血吸虫副肌球蛋白。

关键词：日本血吸虫病副肌球蛋白 rSj97基因亚克隆

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血压自我监测计划:系统回顾

中华高血压杂志 2019年第12期27卷 1218-1218页

作者： Hodgkinson JA Stevens R Grant S Mant J Bray EP Hobbs FDR Martin U Schwartz C mcCartney D O'Mahony R Perera-Salazar R Roberts N Stevens S Williams B mc-manus RJ 不详

Am J Hypertens,2019,32(4):350-364.血压自我监测比临床检测能更好地预测预后,深受患者的欢迎,并在高血压指南中得到认可。然而,目前还未确定最优的自我监测计划。因此,本研究旨在明确用于预测未来心血管事件的最佳计划以及潜藏的"真实... 详细信息

Am J Hypertens,2019,32(4):350-364.血压自我监测比临床检测能更好地预测预后,深受患者的欢迎,并在高血压指南中得到认可。然而,目前还未确定最优的自我监测计划。因此,本研究旨在明确用于预测未来心血管事件的最佳计划以及潜藏的"真实"血压情况。方法:共检索6个电子数据库[包括2009年11月到2017年4月更新的英国国家健康与临床卓越研究所(National Institute for Health and Care Excellence,NICE)系统评估]。

关键词：系统回顾监测计划高血压