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屎肠球菌细胞外囊泡对小鼠生长性能、肠道形态和粪便菌群的影响

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广东农业科学 2024年第5期51卷 135-143页

作者：孙军航罗梅英李素倩冯鑫张辉华孙瑞萍柒启恩佛山科学技术学院生命科学与工程学院广东佛山528225 海南省农业科学院畜牧兽医研究所海南海口571100

【目的】探究屎肠球菌细胞外囊泡(Enterococcus faecium extracellular vesicles,Efm-EV)对小鼠生长性能、免疫、肠道形态和粪便菌群的影响,为屎肠球菌作为微生物饲料添加剂在动物生产中的推广应用提供理论依据。【方法】将20只雄性C57B... 详细信息

【目的】探究屎肠球菌细胞外囊泡(Enterococcus faecium extracellular vesicles,Efm-EV)对小鼠生长性能、免疫、肠道形态和粪便菌群的影响,为屎肠球菌作为微生物饲料添加剂在动物生产中的推广应用提供理论依据。【方法】将20只雄性C57BL/6小鼠随机分为对照组和试验组,每组10个重复,每个重复1只小鼠。试验期为5 d,试验组小鼠每隔1 d灌胃含有500 μg的 Efm-EV悬液,每只灌胃150 μL;对照组小鼠灌胃等量PBS溶液。记录小鼠每天的采食量、试验开始和结束时的体重,计算小鼠的平均日增重、平均日采食量、料重比。【结果】与PBS处理相比,Efm-EV处理小鼠的终末体重、平均日增重、平均日采食量、料重比没有显著变化。Efm-EV处理小鼠的血清IgA和IgG水平与PBS处理小鼠相比显著下降(P<0.05),而小鼠血清IL-10水平显著提升(P<0.05),TNF-α无显著变化。与PBS处理相比,Efm-EV处理小鼠十二指肠绒隐比显著提高(P<0.05),而小鼠十二指肠绒毛高度、隐窝深度,空肠和回肠的绒毛高度、隐窝深度、绒隐比无明显变化。灌胃Efm-EV处理小鼠粪便菌群在门水平上提高了厚壁菌门(Firmicutes)的细菌数量,降低了拟杆菌门(Bacteroidetes)的细菌数量;在科水平上提高了毛螺菌科(Lachnospiraceae)的丰度,降低了Muribaculaceae科的丰度;在属水平上显著提高了小鼠瘤胃球菌科UCG009 (Ruminococcaceae UCG 009)的丰度(P<0.05)。【结论】灌胃Efm-EV能够提高小鼠机体的抗炎水平,改善小鼠十二指肠形态结构,提高瘤胃球菌科UCG009的相对丰度。

关键词：屎肠球菌细胞外囊泡小鼠肠道形态粪便菌群免疫

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基于全基因组重测序研究文昌鸡产蛋性能的影响因素

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畜牧兽医学报 2024年第2期55卷 502-514页

作者：任钰为陈星林燕宁黄潇仙洪玲玲王峰孙瑞萍张艳刘海隆郑心力晁哲海南省农业科学院畜牧兽医研究所海南省热带动物繁育与疫病研究重点实验室海口571100 武汉市农业科学院畜牧兽医研究所武汉430000

旨在通过研究文昌鸡进化过程的特征,深入理解影响产蛋性能的因素,为文昌鸡优良品种选育提供基础。本研究采集35只健康文昌鸡(35周龄,15公,20母)和30只健康江汉鸡(35周龄,10公,20母)的血液组织各3 mL提取DNA,采用全基因组重测序方法建库... 详细信息

旨在通过研究文昌鸡进化过程的特征,深入理解影响产蛋性能的因素,为文昌鸡优良品种选育提供基础。本研究采集35只健康文昌鸡(35周龄,15公,20母)和30只健康江汉鸡(35周龄,10公,20母)的血液组织各3 mL提取DNA,采用全基因组重测序方法建库测序。首先,对于原始测序数据用trimmomatic软件过滤,获得高质量序列比对到鸡的参考基因组,GATK软件提取变异位点SNPs,设置参数质控去除低质量、假阳性变异位点,进一步采用snpEff对过滤的SNPs进行基因结构和功能注释。然后,比较文昌鸡和江汉鸡的群体结构差异,分别设置评估群体差异参数Fst、ROD、Tajima′s D的阈值,筛选受到选择的区域,并对这些区域的基因进行功能富集。结果表明:1)文昌鸡测序获得1.05 Tb clean data,平均每个样本大约29.97 Gb,测序深度大约28×;江汉鸡测序获得1.10 Tb clean data,每个样本大约36.72 Gb,测序深度大约35×;平均比对率>98%。2)两个群体基因结构注释总数均是内含子>基因间区>上下游调控区>编码区;系统进化树和主成分分析显示文昌鸡和江汉鸡亲缘关系较远;文昌鸡的连锁不平衡程度低于江汉鸡。3)与产蛋性能相关基因的功能富集结果主要包括3种必须氨基酸(缬氨酸、亮氨酸、异亮氨酸)代谢途径、钙离子沉积、金属肽酶抗氧化、肾上腺素和催乳素受体活性等功能,而且这些通路的基因都位于受到强烈选择的区域。综上所述,影响文昌鸡产蛋性能的因素主要包括必须氨基酸代谢、矿物质沉积和抗氧化、性腺激素分泌,这3个因素在进化过程中都受到强烈选择,对产蛋性能发挥重要调控作用。从进化分子遗传学角度研究鸡的产蛋机理,不但能够促进理解文昌鸡产蛋性能的进化特征,而且有助于加速高产蛋鸡品种或品系的培育。

关键词：文昌鸡全基因组重测序遗传选择产蛋性能影响因素

植物源miR156a-5p对五指山断奶仔猪肠道菌群和上皮屏障的影响

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动物营养学报 2023年第4期35卷 2184-2195页

作者：王奕孙瑞萍彭永佳姜涵晨马飞张瑾黎梦嘉兴学院生物与化学工程学院嘉兴314000 海南省农业科学院畜牧兽医研究所海口571100

本试验旨在探究植物源miR156a-5p对五指山断奶仔猪肠道菌群和上皮屏障的影响。选取初始体重为(5.82±0.13)kg的35日五指山龄断奶仔猪12头,随机分为2组,每组6个重复,每个重复1头。对照组饲喂无意义单链核酸,试验组饲喂合成的植物源miR156... 详细信息

本试验旨在探究植物源miR156a-5p对五指山断奶仔猪肠道菌群和上皮屏障的影响。选取初始体重为(5.82±0.13)kg的35日五指山龄断奶仔猪12头,随机分为2组,每组6个重复,每个重复1头。对照组饲喂无意义单链核酸,试验组饲喂合成的植物源miR156a-5p(每天600 pmol/kg)。试验期7 d。结果表明:与对照组相比,1)试验组的终末体重和平均日增重均无显著差异(P>0.05),肺脏指数显著增加(P<0.05);2)试验组的血清白蛋白和高密度脂蛋白胆固醇含量显著或极显著提高(P<0.05);3)试验组十二指肠Chao1指数和Observed_otus指数显著提高(P<0.05),空肠Simpson指数显著降低(P<0.05),盲肠Shanon指数和Simpson指数显著或极显著提高(P<0.05或P<0.01),结肠Simpson指数显著提高(P<0.05);4)试验组十二指肠拟杆菌目(Bacteroidales)、拟杆菌纲(Bacteroidia)和拟杆菌属(Bacteroides)的富集显著增加(P<0.05),十二指肠纤毛菌属(Leptotrichia)、颤螺旋菌属(Oscillibacter)、UCG-010、螺杆菌属(Helicobacter)、脱硫弧菌属(Desulfovibrio)、Clostridia_vadinBB60_group、副萨特氏菌属(Parasutterella)和理研菌属(Rikenella)等的富集显著增加(P<0.05);5)试验组十二指肠pH和隐窝深度极显著提高(P<0.01);6)试验组十二指肠载脂蛋白A1(APOA1)和尾型同源盒转录因子2(CDX2)mRNA相对表达量极显著上调(P<0.01),十二指肠黏糖蛋白2(MUC2)、肿瘤坏死因子-α(TNF-α)和β防御素1(DEFB1)mRNA相对表达量显著上调(P<0.05)。综上所述,植物源miR156a-5p可调节断奶五指山仔猪十二指肠、空肠、盲肠和结肠菌群α多样性,增加十二指肠pH及拟杆菌纲、目和属水平的富集,改善十二指肠上皮分化、化学屏障和黏膜免疫屏障功能。

关键词：植物源miRNA 断奶仔猪肠道菌群肠道屏障

Effect of Pelleted Total Mixed Ration on Production Performance and Serum Biochemical Index of Growing Hainan Black Goats

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Animal Husbandry and Feed Science 2019年第1期11卷 19-22,31页

作者： Liu Quanwei Wang Feng Wei Limin Huang Lili sun ruiping Xing Manping Zheng Xinli Institute of Animal Science and Veterinary Medicine Hainan Academy of Agricultural Sciences Haikou 571100 China Hainan Key Lab of Tropical Animal Reproduction Breeding and Epidemic Disease Research Haikou 571100 China

[Objective] The paper was to investigate effects of pelleted total mixed ration on production performance and serum biochemical index of growing Hainan black goats.[Method] Twenty-four growing Hainan black goats with the same genetic backgrounds and similar initial weight of(10.05±0.049) kg were randomly assigned into two treatments, and supplied with Juncao + concentrate(control group), pelleted total mixed ration(experimental group), respectively. The trial lasted 50 d.[Result] The final weight, daily gain and feed intake of experimental group were significantly higher than those of control group(P<0.05), but the feed/gain ratio of experimental group was markedly lower than that of control group(P<0.05). Compared with the control group, the gross profit of experimental group significantly increased( P <0.05).[Conclusion] Pelleted total mixed ration led to better production performance of growing Hainan black goat.

关键词： Growing Hainan black goat Pelleted total mixed ration Production performance Serum biochemical parameters

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两级泡沫分离废水中大豆蛋白的工艺

农业工程学报 2010年第11期26卷 374-378页

作者：孙瑞娉殷昊卢珂吴兆亮河北工业大学生物工程系天津300130

为了有效处理高浓度大豆蛋白废水,在研究初始pH值、表观气速和温度特别是在较高温度(60℃)对泡沫分离大豆蛋白废水效果影响的基础上,建立了可同时提高富集比和回收率的两级泡沫分离工艺。在60℃时,对大豆蛋白质量浓度为4.0g/L的废水泡... 详细信息

为了有效处理高浓度大豆蛋白废水,在研究初始pH值、表观气速和温度特别是在较高温度(60℃)对泡沫分离大豆蛋白废水效果影响的基础上,建立了可同时提高富集比和回收率的两级泡沫分离工艺。在60℃时,对大豆蛋白质量浓度为4.0g/L的废水泡沫分离,富集比比常温时提高4倍多。两级泡沫分离工艺中,第一级分离在大豆蛋白质量浓度为4.0g/L,初始pH值为7.0,表观气速0.133cm/s,60℃下操作,富集比为7.71,残液作为第二级泡沫分离的进料;第二级分离先在20℃,表观气速0.133cm/s下进行,待塔顶无泡沫溢出时,再将表观气速升到0.398cm/s,富集比为2.63,消泡液加入到废液中作为第一级泡沫分离的进料;总回收率为82.75%。在不同温度和气速下进行的两级泡沫分离工艺可以有效的处理大豆蛋白废水,回收其中的蛋白质。

关键词：蛋白温度废水大豆蛋白两级泡沫分离

水环境中阿莫西林的分布特征及其风险研究进展

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应用基础与工程科学学报 2024年第1期32卷 1-19页

作者：李思薛海林王雅娟宋瑞平孙卫玲中国农业大学资源与环境学院农田土壤污染防控与修复北京市重点实验室北京100193 中国农业大学烟台研究院山东烟台264670 北京市水利规划设计研究院北京100048 北京大学环境科学与工程学院北京100871

阿莫西林作为一种常用的广谱抗生素,在各种水环境介质中被广泛检出,其环境赋存和生态风险亟待关注.基于文献调研,系统梳理了2003~2022年81篇有关水环境中阿莫西林污染调查的研究数据,构建了水环境中阿莫西林浓度数据库,总结分析了阿莫... 详细信息

阿莫西林作为一种常用的广谱抗生素,在各种水环境介质中被广泛检出,其环境赋存和生态风险亟待关注.基于文献调研,系统梳理了2003~2022年81篇有关水环境中阿莫西林污染调查的研究数据,构建了水环境中阿莫西林浓度数据库,总结分析了阿莫西林在污水处理厂进出水、地表水、地下水和饮用水中的分布特征和风险.研究结果表明,阿莫西林在水环境的浓度为ng/L至μg/L,其在污水处理厂进出水和地表水中的浓度和检出率显著高于地下水和饮用水(p<0.05,Kruskal Wallis ANOVA).在欠发达国家或新兴经济体国家地表水中,阿莫西林的污染较严重,最高浓度可达n×100μg/L.与湖泊和水库相比,河流中阿莫西林的浓度较高,这与河流受人类活动干扰程度较高密切相关.在人类活动较密集的城市河流和近海中,阿莫西林对藻类具有高生态风险,其对细菌耐药性的影响也不容忽视.

关键词：阿莫西林污染特征生态风险污水处理厂河流地下水饮用水

Effects on Growth Performance and Feed Digestibility of Hainan Black Pigs by Adding Lysine in Low Protein Diet

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Animal Husbandry and Feed Science 2018年第2期10卷 109-112页

作者： Wei Limin Liu Quanwei sun ruiping Zheng Xinli Wang Feng Tan Shuyi Huang Lili Xing Manping Institute of Animal Science and Veterinary Medicine Hainan Academy of Agricultural Sciences Haikou 571100 China Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research Haikou 571100 China

[Objective] The paper was to study the effects on growth performance and feed digestibility of Hainan black pigs by adding lysine in low prntein diet. [Method] A tntal of 36 Hainan black pigs with the body weight of （46.34±3.06） kg were randomly divided into three groups： con- trol group （protein level 15%, lysine level 0.83%）, experimental grnup 1 （protein level 13%, 0.83%）, and experimental group II （protein level 13%, lysine level 1.03）, each group had three replicates of four pigs. The trial lasted 35 d. [Result] The growth performance of Hainan black pig in grnup II had no significan! difference with that in contrail group （P〉0.05）. The apparent digestibility of chide protein and phosphorus of Hainan black pigs in Group II increased significantly （P〈0.05）, which were increased by 10.08% and 11.85% respectively compared to the control group; the apparent digestibility of calcium was increased, but the difference was not signifieant （P〉0.05）. [Conclusion] It will not reduce the growth performance of Hainan blaek pig when the protein level of diet is reduced by 2% and Ihe lysine level is increased to 1.03%. It is recommended that the diet can be used in the production of llainan black pig.

关键词： Low prolein diets Lysine Hainan black pigs Growth performances Feed digestibility

Glucagon-like peptide-1 receptor agonists rescued diabetic vascular endothelial damage through suppression of aberrant STING signaling

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Acta Pharmaceutica Sinica B 2024年第6期14卷 2613-2630页

作者： Xuemin He Siying Wen Xixiang Tang Zheyao Wen Rui Zhang Shasha Li Rong Gao Jin Wang Yanhua Zhu Dong Fang Ting Li ruiping Peng Zhaotian Zhang Shiyi Wen Li Zhou Heying Ai Yan Lu Shaochong Zhang Guojun Shi Yanming Chen Department of Endocrinology and Metabolic Diseases the Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China Guangdong Provincial Key Laboratory of Diabetology&Guangzhou Municipal Key Laboratory of Mechanistic and Translational Obesity Research the Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China VIP Medical Service Center the Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China Department of Clinical Immunology the Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China Department of Ophthalmology the Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen UniversityGuangzhou 510060China Department of Fundus Shenzhen Eye Hospital of Jinan UniversityShenzhen 518048China

Glucagon-like peptide-1 receptor agonists(GLP-1 RAs)protect against diabetic cardiovascular diseases and ***,their activity in diabetic retinopathy(DR)remains *** retrospective cohort study involving 1626 T2DM patients revealed superior efficacy of GLP-1 RAs in controlling DR compared to other glucose-lowering medications,suggesting their advantage in DR *** single-cell RNA-sequencing analysis and immunostaining,we observed a high expression of GLP-1R in retinal endothelial cells,which was down-regulated under diabetic *** of GLP-1 RAs significantly restored the receptor expression,resulting in an improvement in retinal degeneration,vascular tortuosity,avascular vessels,and vascular integrity in diabetic *** and GSEA analyses further implicated enhanced mitochondrial gene translation and mitochondrial functions by GLP-1 ***,the treatment attenuated STING signaling activation in retinal endothelial cells,which is typically activated by leaked mitochondrial *** of STING mRNA was positively correlated to the levels of angiogenic and inflammatory factors in the endothelial cells of human fibrovascular *** investigation revealed that the cAMP-responsive element binding protein played a role in the GLP-1R signaling pathway on suppression of STING *** study demonstrates a novel role of GLP-1 RAs in the protection of diabetic retinal vasculature by inhibiting STING-elicited inflammatory signals.

关键词： GLP-1 RAs STING signaling Retinal endothelial cells Mitochondrial leakage Retinal vascular dysfunction Diabetic retinopathy CREB Inflammation

Effects of Dietary Concentrate to Forage Ratios on Production Performance and Serum Biochemical Indicators in Post-fattening Hainan Yellow Cattle

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Animal Husbandry and Feed Science 2020年第1期12卷 17-20,35页

作者： Wang Feng Wei Limin Zheng Xinli Liu Hailong sun ruiping Chao Zhe Huang Lili Fu Liang Liu Quanwei Institute of Animal Science and Veterinary Medicine Hainan Academy of SciencesHaikou571100 China Hainan Key Lab of Tropical Animal Reproduction Breeding and Epidemic Disease ResearchHaikou 571100China

[Objective]The paper was to investigate the effects of dietary concentrate to forage ratios on production performance and serum bio-chemical indicators of post-fattening Hainan Yellow Cattle.[Method]Sixteen Hainan Yellow Cattles with the same genetic backgrounds and similar initial weight of(242.22 ±0.71 kg) were randomly divided into four *** were fed with diets of different concentrate to forage ratios(20:80, group Ⅰ;30:70, Group Ⅱ;40:60, group Ⅲ;50:50, group Ⅳ).The trial lasted 62 d.[Result]The daily gain in experimental group Ⅳ was significantly higher than that in experimental group Ⅱ(P0.05).The feed intake in experimental group Ⅳ was also markedly higher than those in experimental groups Ⅰ and Ⅱ(P<0.05).Compared with the experimental group Ⅱ, the gross profit of experimental group Ⅳ was significantly promoted(P<0.05).The alanine aminotransferase and aspartate aminotransferase activities in experimental group Ⅱ were markedly higher than those in experimental groups Ⅰ, Ⅲ and Ⅳ.[Conclusion]When the dietary concentrate to forage ratios was 50∶50, the production performance of post-fattening Hainan Yellow Cattle was better.

关键词： Concentrate to forage ratios Hainan Yellow Cattle Growth performance Economic benefits Serum biochemical indicator