检索结果-南通市图书馆

Study on the interaction between β-carotene and gut microflora using an in vitro fermentation model

Food Science and Human Wellness 2023年第4期12卷 1369-1378页

作者： Zhixian Li Zhuqing Dai Enjuan Shi Peng Wan Guijie Chen Zhongyuan Zhang Yayuan Xu Ruichang Gao Xiaoxiong Zeng Dajing Li School of Food and Biological Engineering Jiangsu UniversityZhenjiang 212013China Institute of Agro-product Processing Jiangsu Academy of Agricultural SciencesNanjing 210014China College of Food Science and Technology Nanjing Agricultural UniversityNanjing 210095China

β-Carotene,a typical non-oxygenated carotenoid,is the most efficient source of retinol(VA).The low bio-availability ofβ-carotene lead to large accumulation in colon;however,the relationship betweenβ-carotene and gut microflora remains unclear.This study intends to explore the interaction betweenβ-carotene and gut microflora using an in vitro fermentation model.After 24 h fermentation,the degradation rate ofβ-carotene was(64.28±6.23)%,which was 1.46 times that of the group without gut microflora.Meanwhile,the production of VA was nearly 2 times that of the group without gut microflora,indicating that the gut microflora can metabolizeβ-carotene into VA.β-Carotene also influences the production of short-chain fatty acids(SCFAs),the production of total SCFAs in 0.5 mg/mLβ-carotene(BCM)group was(44.00±1.16)mmol/L,which was 2.26 times that of the blank control(BLK)group.Among them,the production of acetic acid in BCM group was(19.06±0.82)mmol/L,which was 2.64 time that of the BLK group.Furthermore,β-carotene significantly affected the structure and composition of gut microflora,increasing the abundance of Roseburia,Parasutterella and Lachnospiraceae,and decreasing the abundance of Dialister,Collinsella and Enterobacter(Pgut microflora.

关键词： β-Carotene gut microflora Retinol Short-chain fatty acids

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Impacts of dietary supplementation of bamboo vinegar and charcoal powder on growth performance,intestinal morphology,and gut microflora of large-scale loach Paramisgurnus dabryanus

引用

Journal of Oceanology and Limnology 2023年第3期41卷 1187-1196页

作者： Kwangjin JU Myongsuk KIL Sanghyok RI Tongchol KIM Juhyok KIM Wei SHI Lining ZHANG Maocang YAN Jiongming ZHANG Guangxu LIU College of Animal Sciences Zhejiang UniversityHangzhou 310058China College of Aquaculture Wonsan Fisheries UniversityWonsan 999093DPR Korea College of Life Science Kim Hyong Jik University of EducationPyongyang 99903DPR Korea Zhejiang Mariculture Research Institute Wenzhou 325005China

Although accumulating data demonstrate that dietary supplementation of bamboo vinegar and charcoal powder(BVC)can significantly strengthen the immunity and boost the growth of domestic animals,its application potency still awaits verification in commercial fish species such as the large-scale loach Paramisgurnus dabryanus.The impacts of 90-day dietary supplementation of 1%and 2%BVC on survival and growth performance of the loach,and on the intestinal morphological characteristics and gut microflora were analyzed.Our data show that the large-scale loach supplied with BVC at the experimental doses had significant higher survival rates and better growth performance(indicated by greater weight gain(1.13–1.14 times),higher specific growth rate(1.04 times),and lower feed conversion ratio(0.88–0.89 times))compared to that of the control(Pgut microflora consisted of significantly fewer proportions of potential pathogenic bacterial species(Aeromonas veronii and Escherichia coli),but significantly greater proportions of beneficial microbes(Lactococus raffinolactis and Faecalibacterium prausnitzii).Therefore,dietary intake of BVC can promote intestinal tract development and optimize gut microflora,by which the survival and growth of large-scale loach may be improved.

关键词： bamboo vinegar bamboo charcoal Paramisgurnus dabryanus growth performance intestinal morphology gut microflora

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Research progress on adaptive modifications of the gut microflora and regulation of host glucose and lipid metabolism by cold stimulation

引用

Frigid Zone Medicine 2023年第1期3卷 13-21页

作者： Wanting Wei Guanyu Zhang Yongqiang Zhang Li Zhang Shuai Wu Xi Li Danfeng Yang Tianjin Institute of Environmental and Operational Medicine Tianjin 300050China School of Public Health China Medical UniversityShenyang 110122China

The gut microflora is a combination of all microbes in intestine and their microenvironment,and its change can sensitively reflect the relevant response of the body to external environment and remarkably affect body's metabolism as well.Recent studies have found that cold exposure affects the body's gut microflora,which can lead to changes in the body's metabolism of glucose and lipid.This review summarizes recent research on the effects of cold exposure on gut microbes and metabolism of glucose and lipid,aiming to provide some new ideas on the approaches and measures for the prevention and treatment of diabetes and obesity.

关键词： cold exposure gut microflora glucose metabolism lipid metabolism

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Lactobacillus plantarum BSGP201683 isolated from giant panda feces attenuated inflammation and improved gut microflora in mice challenged with enterotoxigenic Escherichia coli

Lactobacillus plantarum BSGP201683 isolated from giant panda...

引用

中国畜牧兽医学会动物微生态学分会第五届第十三次全国学术...

作者： Qian Liu Xueqin Ni Qiang Wang Zhirong Peng Lili Niu Hengsong Wang Yi Zhou Hao Sun Kangcheng Pan Bo Jing Dong Zeng Animal Microecology Institute College of Veterinary MedicineSichuan Agricultural University Chengdu Wildlife Institute Chengdu Zoo Key Laboratory of Animal Disease and Human Health of Sichuan Province

In this work,we searched for an effective probiotic that can help control intestinal infection,particularly enterotoxigenic Escherichia coli K88(ETEC) invasion,in giant panda(Ailumpoda melanoleuca).As a potential probiotic strain,Lactobacillus plantarum BSGP201683(L.plantarum G83)was isolated from the feces of giant panda and proven beneficial in vitro.This study was aimed to evaluate the protective effect of I.plantarum G83 in mice challenged with ETEC.The mice were orally administered with 0.2 mL of PBS containing L.plantarum G83 at 0 colony-forming units(cfu) mL(control;negative control,ETEC group),5.0 xl08 cfu mL(LDLP),5.0×10 cfu mL(MDLP),and5.0×10 cfu mL(HDLP) for 14 consecutive days.At day 15,the mice(LDLP,MDLP,HDLP,and ETEC groups) were challenged with ETEC and assessed at 0,24,and 144 h.Animal health status;chemical and biological intestinal barriers;and body weight were measured.Results showed that L.plantarum G83 supplementation protected the mouse gut mainly by attenuating inflammation and improving the gut microflora.Most indices significantly changed at 24 h after challenge compared to those at 0 and 144 h.All treatment groups showed inhibited plasma diamine oxidase activity and D-lactate concentration.Tight-junction protein expression was down-regulated,and interleukin(IL)-1β,IL-6,IL-8,TLR4,and MyD88 levels were up-regulated in the jejunum in the LDLP and MDLP groups.The number of the Enterobacteriaceae family and the heat-labile enterotoxin(LT) gene decreased(P <0.05) in the colons in the LDLP and MDLP groups.All data indicated that L.plantarum G83 could attenuate acute intestinal inflammation caused by ETEC infection,and the low and intermediate doses were superior to the high dose.These findings suggested that L.plantarum G83 may serve as a protective probiotic for intestinal disease and merits further investigation.

关键词： Lactobacillus plantarum BSGP201683 enterotoxigenic Escherichia coli K88 immune response intestinal barrier gut microflora

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

A Comparative Study on Rat Intestinal Epithelial Cells and Resident gut Bacteria (ii) Effect of Arsenite

引用

Biomedical and Environmental Sciences 2006年第2期19卷 77-86页

作者： RAJ K.UPRETI A.KANNAN RICHA SHRIVASTAVA U.C.CHATURVEDI Biomembrane Toxicology Laboratory Industrial Toxicology Research Centre M. G. Marg P. B. No. 80 Lucknow-226001 India

Objective In order to use facultative gut bacteria as an alternate to animals for the initial gastrointestinal toxicity screening of heavy metals, a comparative study on rat intestinal epithelial cells and resident gut bacteria was undertaken. Methods in vitro growth rate of four gut bacteria, dehydrogenase （DHA） and esterase （EA） activity test, intestinal epithelial and bacterial cell membrane enzymes and in situ effect of arsenite were analysed. Results Growth profile of mixed resident population of gut bacteria and pure isolates of Escherichia coli, Pseudomonas sp., Lactobacillus sp., and Staphylococcus sp. revealed an arsenite （2-20 ppm） concentration-dependent inhibition. The viability pattern of epithelial cells also showed similar changes. DHA and EA tests revealed significant inhibition （40%-72%） with arsenite exposure of 5 and 10 ppm in isolated gut bacteria and epithelial cells. Decrease in membrane alkaline phosphatase and Ca^2＋-Mg^2＋-ATPase activities was in the range of 33%-55% in four bacteria at the arsenite exposure of 10 ppm, whereas it was 60%-65% in intestinal epithelial villus cells, in situ incubation of arsenite using intestinal loops also showed more or less similar changes in membrane enzymes of resident gut bacterial population and epithelial cells. Conclusion The results indicate that facultative gut bacteria can be used as suitable in vitro model for the preliminary screening of arsenical gastrointestinal cytotoxic effects.

关键词： Arsenic gut microflora Intestinal bacteria Intestinal epithelial cells Membrane enzymes GI-toxicity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：