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https://www.readbyqxmd.com/read/29449892/possible-correlation-between-gut-microbiota-and-immunity-among-healthy-middle-aged-and-elderly-people-in-southwest-china
#1
Xi Shen, Junjie Miao, Qun Wan, Shuyue Wang, Ming Li, Fangfang Pu, Guoqing Wang, Wei Qian, Qian Yu, Francesco Marotta, Fang He
Background: The present study was conducted to investigate the possible association between gut microbes and immunity among healthy middle-aged and elderly individuals in southwest China. A total of 148 healthy adults aged ≥ 50 years were divided into two age groups: middle-aged group (50-59 years; n = 67, 54.13 ± 3.32) and elderly group (≥ 60 years; n = 81, 64.70 ± 3.93). Blood samples were collected to measure serum immune and biochemical indices. Gut microbiota compositions of the groups were characterized on the basis of faecal DNA using 16S rRNA gene sequencing...
2018: Gut Pathogens
https://www.readbyqxmd.com/read/29432061/atorvastatin-treatment-modulates-the-gut-microbiota-of-the-hypercholesterolemic-patients
#2
Tariq Jamal Khan, Youssri M Ahmed, Mazin A Zamzami, Aisha M Siddiqui, Imran Khan, Othman A S Baothman, Mohamed G Mehanna, Abudukadeer Kuerban, Mohammed Kaleemuddin, Muhammad Yasir
Hypercholesterolemia is one of the most important risk factors for development of cardiovascular diseases. The composition of gut microbiota (total microbes residing in the gut) impacts on cholesterol and lipid metabolism. On the contrary, alterations in gut microbiota in response to hypercholesterolemia or drug treatment with atorvastatin (a cholesterol-lowering agent) are rarely investigated. We performed 16S rDNA amplicon sequencing to evaluate the gut bacterial community of 15 untreated hypercholesterolemic patients (HP) and 27 atorvastatin-treated hypercholesterolemic patients (At-HP) and compared with 19 healthy subjects (HS)...
February 2018: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/29423216/dietary-proline-supplementation-alters-colonic-luminal-microbiota-and-bacterial-metabolite-composition-between-days-45-and-70-of-pregnancy-in-huanjiang-mini-pigs
#3
Yujiao Ji, Qiuping Guo, Yulong Yin, Francois Blachier, Xiangfeng Kong
Background: Pregnancy is associated with important changes in gut microbiota composition. Dietary factors may affect the diversity, composition, and metabolic activity of the intestinal microbiota. Among amino acids, proline is known to play important roles in protein metabolism and structure, cell differentiation, conceptus growth and development, and gut microbiota re-equilibration in case of dysbiosis. Results: Dietary supplementation with 1% proline decreased (P < 0...
2018: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/29411528/alterations-in-the-gut-microbiota-of-patients-with-acquired-immune-deficiency-syndrome
#4
Youlian Zhou, Zhitao Ou, Xiaoping Tang, Yongjian Zhou, Haoming Xu, Xianfei Wang, Kang Li, Jie He, Yanlei Du, Hong Wang, Ye Chen, Yuqiang Nie
Acquired immune deficiency syndrome (AIDS), caused by infection with human immunodeficiency virus (HIV), is associated with gastrointestinal disease, systemic immune activation and changes in the gut microbiota. Here, we aim to investigate the gut microbiota patterns of HIV-infected individuals and HIV-uninfected individuals in populations from South China. We enrolled 33 patients with HIV (14 participants treated with highly active antiretroviral therapy [HAART] for more than 3 months; the remaining 19 individuals had not received treatment) and 35 healthy controls (HC) for a cross-sectional comparison of gut microbiota using stool samples...
February 7, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29393195/fecal-microbiome-and-food-allergy-in-pediatric-atopic-dermatitis-a-cross-sectional-pilot-study
#5
Karin B Fieten, Joan E E Totté, Evgeni Levin, Marta Reyman, Yolanda Meijer, André Knulst, Frank Schuren, Suzanne G M A Pasmans
BACKGROUND: Exposure to microbes may be important in the development of atopic disease. Atopic diseases have been associated with specific characteristics of the intestinal microbiome. The link between intestinal microbiota and food allergy has rarely been studied, and the gold standard for diagnosing food allergy (double-blind placebo-controlled food challenge [DBPCFC]) has seldom been used. We aimed to distinguish fecal microbial signatures for food allergy in children with atopic dermatitis (AD)...
January 25, 2018: International Archives of Allergy and Immunology
https://www.readbyqxmd.com/read/29393019/increased-productivity-in-poultry-birds-by-sub-lethal-dose-of-antibiotics-is-arbitrated-by-selective-enrichment-of-gut-microbiota-particularly-short-chain-fatty-acid-producers
#6
Sohini Banerjee, Abhijit Sar, Arijit Misra, Srikanta Pal, Arindom Chakraborty, Bomba Dam
Antibiotics are widely used at sub-lethal concentrations as a feed supplement to enhance poultry productivity. To understand antibiotic-induced temporal changes in the structure and function of gut microbiota of chicken, two flocks were maintained for six weeks on a carbohydrate- and protein-rich diet. The feed in the conventional diet (CD) group was supplemented with sub-lethal doses of chlorotetracycline, virginiamycin and amoxicillin, while the organic diet (OD) had no such addition. Antibiotic-fed birds were more productive, with a lower feed conversion ratio (FCR)...
February 2018: Microbiology
https://www.readbyqxmd.com/read/29390031/infectious-bursal-disease-virus-infection-leads-to-changes-in-the-gut-associated-lymphoid-tissue-and-the-microbiota-composition
#7
Li Li, Tereza Kubasová, Ivan Rychlik, Frederic J Hoerr, Silke Rautenschlein
Infectious bursal disease (IBD) is an acute, highly contagious and immunosuppressive poultry disease. IBD virus (IBDV) is the causative agent, which may lead to high morbidity and mortality rates in susceptible birds. IBDV-pathogenesis studies have focused mainly on primary lymphoid organs. It is not known if IBDV infection may modify the development of the gut associated lymphoid tissues (GALT) as well as the microbiota composition. The aim of the present study was to investigate the effects of IBDV-infection on the bursa of Fabricius (BF), caecal tonsils (CT) and caecum, and to determine the effects on the gut microbiota composition in the caecum...
2018: PloS One
https://www.readbyqxmd.com/read/29385239/faecalibacterium-prausnitzii-and-a-prebiotic-protect-intestinal-health-in-a-mouse-model-of-antibiotic-and-clostridium-difficile-exposure
#8
Sanjoy Roychowdhury, Jennifer Cadnum, Bryan Glueck, Mark Obrenovich, Curtis Donskey, Gail A M Cresci
BACKGROUND: Clostridium difficile (CD) infection (CDI) increases patient morbidity, mortality and healthcare costs. Antibiotic treatment induces gut dysbiosis and is both a major risk factor for CD colonization and treatment of CDI. Probiotics have been trialed to support commensal gut microbiota and reduce CDI. This study investigated commensal microbe Faecalibacterium prausnitzii (FP) and a prebiotic, both known to yield butyrate and be anti-inflammatory and immunomodulatory, on CD colonization and gut integrity in mice...
January 31, 2018: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/29385143/longitudinal-microbiome-analysis-of-single-donor-fecal-microbiota-transplantation-in-patients-with-recurrent-clostridium-difficile-infection-and-or-ulcerative-colitis
#9
Michael Mintz, Shanawaj Khair, Suman Grewal, Joseph F LaComb, Jiyhe Park, Breana Channer, Ramona Rajapakse, Juan Carlos Bucobo, Jonathan M Buscaglia, Farah Monzur, Anupama Chawla, Jie Yang, Charlie E Robertson, Daniel N Frank, Ellen Li
BACKGROUND: Studies of colonoscopic fecal microbiota transplant (FMT) in patients with recurrent CDI, indicate that this is a very effective treatment for preventing further relapses. In order to provide this service at Stony Brook University Hospital, we initiated an open-label prospective study of single colonoscopic FMT among patients with ≥ 2 recurrences of CDI, with the intention of monitoring microbial composition in the recipient before and after FMT, as compared with their respective donor...
2018: PloS One
https://www.readbyqxmd.com/read/29382366/age-and-fecal-microbial-strain-specific-differences-in-patients-with-spondyloarthritis
#10
Matthew L Stoll, Pamela F Weiss, Jennifer E Weiss, Peter A Nigrovic, Barbara S Edelheit, S Lou Bridges, Maria I Danila, Charles H Spencer, Marilynn G Punaro, Kenneth Schikler, Andreas Reiff, Ranjit Kumar, Randy Q Cron, Casey D Morrow, Elliot J Lefkowitz
BACKGROUND: Prior studies have demonstrated abnormalities in the composition of the gastrointestinal microbiota in pediatric and adult patients with spondyloarthritis (SpA). In particular, diminished fecal abundance of Faecalibacterium prausnitzii and abnormalities in both directions in the abundance of the Bacteroides genus have been identified. METHODS: We obtained fecal specimens from 30 children with treatment-naïve enthesitis-related arthritis (ERA) and 19 healthy controls, as well as specimens from 11 adult patients with longstanding SpA and 10 adult healthy controls...
January 30, 2018: Arthritis Research & Therapy
https://www.readbyqxmd.com/read/29371761/the-influence-of-long-term-use-of-proton-pump-inhibitors-on-the-gut-microbiota-an-age-sex-matched-case-control-study
#11
Tomohisa Takagi, Yuji Naito, Ryo Inoue, Saori Kashiwagi, Kazuhiko Uchiyama, Katsura Mizushima, Saeko Tsuchiya, Tetsuya Okayama, Osamu Dohi, Naohisa Yoshida, Kazuhiro Kamada, Takeshi Ishikawa, Osamu Handa, Hideyuki Konishi, Kayo Okuda, Yoshimasa Tsujimoto, Hiromu Ohnogi, Yoshito Itoh
Proton pump inhibitors (PPIs) are widely used to treat gastro-esophageal reflux and prevent gastric ulcers, and have been considered as low risk. However, recent studies have identified possible associations between PPI use and gut microbiota, suggesting that PPIs use increases the risk of enteric infections, including Clostridium difficile infection. To investigate gut microbiota in Japanese PPIs users, we conducted 16S metagenomics analysis of fecal samples collected from PPI users and healthy adults. In total, 36 PPI users and 36 PPI non-users (as control subjects) matched by age and sex were recruited and fecal samples were obtained to analyze the gut microbiome using 16S rRNA gene sequencing...
January 2018: Journal of Clinical Biochemistry and Nutrition
https://www.readbyqxmd.com/read/29365165/microbial-community-and-short-chain-fatty-acid-profile-in-gastrointestinal-tract-of-goose
#12
H Yang, Y Xiao, G Gui, J Li, J Wang, D Li
Goose is an economically important herbivore waterfowl supplying nutritious meat and eggs, high-quality liver fat, and feathers. However, biogeograhpy of the gut microbiome of goose remains limited. The aim of this study was to investigate the microbiota inhabiting 7 different gastrointestinal locations (proventriculus, gizzard, duodenum, jejunum, ileum, cecum, and rectum) of 180-day-old geese and the short-chain fatty acids (SCFA) of their metabolites based on 16S rRNA gene sequences and gas chromatography, respectively...
January 20, 2018: Poultry Science
https://www.readbyqxmd.com/read/29362454/nonalcoholic-fatty-liver-disease-is-associated-with-dysbiosis-independent-of-body-mass-index-and-insulin-resistance
#13
Hannah E Da Silva, Anastasia Teterina, Elena M Comelli, Amel Taibi, Bianca M Arendt, Sandra E Fischer, Wendy Lou, Johane P Allard
This study aimed to determine if there is an association between dysbiosis and nonalcoholic fatty liver disease (NAFLD) independent of obesity and insulin resistance (IR). This is a prospective cross-sectional study assessing the intestinal microbiome (IM) of 39 adults with biopsy-proven NAFLD (15 simple steatosis [SS]; 24 nonalcoholic steatohepatitis [NASH]) and 28 healthy controls (HC). IM composition (llumina MiSeq Platform) in NAFLD patients compared to HC were identified by two statistical methods (Metastats, Wilcoxon)...
January 23, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29361151/chemoprevention-of-colorectal-cancer-by-black-raspberry-anthocyanins-involved-the-modulation-of-gut-microbiota-and-sfrp2-demethylation
#14
Lili Chen, Bowen Jiang, Chunge Zhong, Jun Guo, Lihao Zhang, Teng Mu, Qiuhua Zhang, Xiuli Bi
Freeze-dried black raspberry powder is considered as a potential cancer chemopreventive agent. In this study, we fed AOM/DSS treated C57BL/6J mice with diet containing black raspberry anthocyanins for 12 weeks and this led to a reduction in colon carcinogenesis. These animals had consistently lower tumor multiplicity compared to AOM/DSS-treated mice not receiving BRB anthocyanins. In AOM/DSS-treated mice, the number of pathogenic bacteria, including Desulfovibriosp and Enterococcus spp, were increased significantly, whereas probiotics such as Eubacterium rectale, Faecalibacterium prausnitzii and Lactobacillus were dramatically decreased, but BRB anthocyanins supplement could reverse this imbalance in gut microbiota...
January 19, 2018: Carcinogenesis
https://www.readbyqxmd.com/read/29342270/whole-genome-analysis-reveals-the-evolution-and-transmission-of-an-mdr-dh-nap11-106-clostridium-difficile-clone-in-a-paediatric-hospital
#15
Larry K Kociolek, Egon A Ozer, Dale N Gerding, David W Hecht, Sameer J Patel, Alan R Hauser
Background: Clostridium difficile strain DH/NAP11/106, a relatively antibiotic-susceptible strain, is now the most common cause of C. difficile infection (CDI) among adults in the USA. Objectives: To identify mechanisms underlying the evolution and transmission of an MDR DH/NAP11/106 clone. Methods: WGS (Illumina MiSeq), restriction endonuclease analysis (REA) and antibiotic susceptibility testing were performed on 134 C. difficile isolates collected from paediatric patients with CDI over a 2 year period...
January 12, 2018: Journal of Antimicrobial Chemotherapy
https://www.readbyqxmd.com/read/29330424/metagenomic-and-metabolomic-analyses-unveil-dysbiosis-of-gut-microbiota-in-chronic-heart-failure-patients
#16
Xiao Cui, Lei Ye, Jing Li, Ling Jin, Wenjie Wang, Shuangyue Li, Minghui Bao, Shouling Wu, Lifeng Li, Bin Geng, Xin Zhou, Jian Zhang, Jun Cai
Previous studies suggested a possible gut microbiota dysbiosis in chronic heart failure (CHF). However, direct evidence was lacking. In this study, we investigated the composition and metabolic patterns of gut microbiota in CHF patients to provide direct evidence and comprehensive understanding of gut microbiota dysbiosis in CHF. We enrolled 53 CHF patients and 41 controls. Metagenomic analyses of faecal samples and metabolomic analyses of faecal and plasma samples were then performed. We found that the composition of gut microbiota in CHF was significantly different from controls...
January 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29322681/gut-microbiome-contributes-to-impairment-of-immunity-in-pulmonary-tuberculosis-patients-by-alteration-of-butyrate-and-propionate-producers
#17
Abhijit Maji, Richa Misra, Darshan B Dhakan, Vipin Gupta, Nitish K Mahato, Rituja Saxena, Parul Mittal, Nitin Thukral, Eshan Sharma, Anoop Singh, Richa Virmani, Mohita Gaur, Harshvardhan Singh, Yasha Hasija, Gunjan Arora, Anurag Agrawal, Anil Chaudhry, Jitendra P Khurana, Vineet K Sharma, Rup Lal, Yogendra Singh
Tuberculosis (TB) is primarily associated with decline in immune health status. As gut microbiome (GM) is implicated in the regulation of host immunity and metabolism, here we investigate GM alteration in TB patients by 16S rRNA gene and whole-genome shotgun sequencing. The study group constituted of patients with pulmonary TB and their healthy household contacts as controls (HCs). Significant alteration of microbial taxonomic and functional capacity was observed in patients with active TB as compared to the HCs...
January 2018: Environmental Microbiology
https://www.readbyqxmd.com/read/29320965/alterations-of-the-gut-microbiota-in-hashimoto-s-thyroiditis-patients
#18
Fuya Zhao, Jing Feng, Jun Li, Lei Zhao, Yang Liu, Huinan Chen, Ye Jin, Biqiang Zhu, Yunwei Wei
BACKGROUND: Hashimoto's thyroiditis (HT) is an organ-specific autoimmune disease in which both genetic predisposition and environmental factors serve as disease triggers. Many studies have indicated that alterations in the gut microbiota are important environmental factors in the development of inflammatory and autoimmune diseases. We systematically performed a comparative analysis of the gut microbiota in HT patients and healthy controls. METHODS: We first conducted a cross-sectional study of 28 HT patients and 16 matched healthy controls...
January 10, 2018: Thyroid: Official Journal of the American Thyroid Association
https://www.readbyqxmd.com/read/29316555/intestinal-dysbiosis-secondary-to-proton-pump-inhibitor-use
#19
Yuji Naito, Kaori Kashiwagi, Tomohisa Takagi, Akira Andoh, Ryo Inoue
BACKGROUND: Gut dysbiosis associated with the use of proton-pump inhibitors (PPIs) has been found to lead to the occurrence of infectious and inflammatory adverse events. A longitudinal observational cohort study has demonstrated the heightened risk of death associated with PPI use. SUMMARY: We evaluated meta-analyses to determine the association between PPI use and infectious and inflammatory diseases. Meta-analyses showed that PPI use is a potential risk for the development of enteric infections caused by Clostridium difficile, as well as small intestinal bacterial overgrowth, spontaneous bacterial peritonitis, community-acquired pneumonia, hepatic encephalopathy, and adverse outcomes in inflammatory bowel disease...
2018: Digestion
https://www.readbyqxmd.com/read/29314285/modulation-of-broilers-caecal-microflora-and-metabolites-in-response-to-a-potential-probiotic-bacillus-amyloliquefaciens
#20
G T Cao, X A Zhan, L L Zhang, X F Zeng, A G Chen, C M Yang
Studies have found that a dietary supplement of Bacillus amyloliquefaciens improved the growth performance, increased the nutrient digestibility of hosts and modulated the intestinal microflora. A total of 360 1-day-old Ross broilers were randomly divided into three treatments: a control group with a basal diet, an antibiotic group with a basal diet and added colistin sulphate, and a probiotics group with a basal diet and added Bacillus amyloliquefaciens. The HiSeq high-throughput sequencing analysis of 16S rRNA was used to investigate the differences in birds' caecal microflora, and metabolomics was used to analyse changes in caecal metabolites...
January 3, 2018: Journal of Animal Physiology and Animal Nutrition
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