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https://www.readbyqxmd.com/read/28712163/molecular-characterization-of-fecal-microbiota-of-healthy-chinese-tobacco-smoker-subjects-in-shaanxi-province-xi-an-china
#1
Hafiz Muhammad Ishaq, Muhammad Shahzad, Xiaokang Wu, Chaofeng Ma, Jiru Xu
BACKGROUND: Tobacco Smoking, most commonly, can cause the diseases affecting the lungs and heart. Human gut microbiota plays a key role to decide the health status of the host. Current study aimed to characterize the gut microbiota of healthy Chinese tobacco smokers and to study the alteration in diversity and similarity of gut microbiota, with comparison of healthy non-smokers. METHODS: Fecal samples were collected from fourteen healthy tobacco smokers and six from healthy non-smoker individuals...
January 2017: Journal of Ayub Medical College, Abbottabad: JAMC
https://www.readbyqxmd.com/read/28698079/purification-and-fermentation-characteristics-of-exopolysaccharide-from-fomitopsis-castaneus-imaz
#2
Guo Wen-Kui, Chi Yu-Jie
Short-chain fatty acids (SCFAs), which are the end products of carbohydrate fermentation in the gut, mainly contribute to energy metabolism in mammals. The amount of SCFAs produced during fermentation is an important parameter that characterizes the fermentation capacity of a system. This paper reports on the fermentation characteristics of exopolysaccharides (EPS) isolated from Fomitopsis castaneus Imaz, a wood-rot fungal species. We isolated and purified the main EPS fraction by freeze drying and DEAE-Sepharose fast flow chromatography...
July 8, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28695188/biology-of-incidental-catch-sea-star-stellaster-childreni-gray-1840-echinodermata-asteroidea-from-malaysian-borneo-exclusive-economic-zone
#3
Ruhana Hassan, Suet Yee Lee, Wan Zabidii Wan Morni
Sea star (class Asteroidea, phylum Echinodermata) is one of the most successful marine organisms inhabiting a wide range of habitats. As one of the key stone species, sea stars are responsible for maintaining much of the local diversity of species within certain communities. Malaysian Exclusive Economic Zone (EEZ) Resource Survey had been carried out from 16th Aug to 6th Nov 2015 and one of the invertebrate by-catch organisms is sea star Stellaster childreni Gray, 1840. This study documents morphological characters and diet of the sea star, besides providing brief descriptions of the habitats based on particle size analysis and vessel log data sheet...
2017: TheScientificWorldJournal
https://www.readbyqxmd.com/read/28683093/regulation-of-gut-luminal-serotonin-by-commensal-microbiota-in-mice
#4
Tomokazu Hata, Yasunari Asano, Kazufumi Yoshihara, Tae Kimura-Todani, Noriyuki Miyata, Xue-Ting Zhang, Shu Takakura, Yuji Aiba, Yasuhiro Koga, Nobuyuki Sudo
Gut lumen serotonin (5-hydroxytryptamine: 5-HT) contributes to several gastrointestinal functions such as peristaltic reflexes. 5-HT is released from enterochromaffin (EC) cells in response to a number of stimuli, including signals from the gut microbiota. However, the specific mechanism by which the gut microbiota regulates 5-HT levels in the gut lumen has not yet been clarified. Our previous work with gnotobiotic mice showed that free catecholamines can be produced by the deconjugation of conjugated catecholamines; hence, we speculated that deconjugation by bacterial enzymes may be one of the mechanisms whereby gut microbes can produce free 5-HT in the gut lumen...
2017: PloS One
https://www.readbyqxmd.com/read/28673241/effects-of-melanin-from-sepiella-maindroni-ink-msmi-on-the-intestinal-microbiome-of-mice
#5
Hui Dong, Weiwei Song, Chunlin Wang, Changkao Mu, Ronghua Li
BACKGROUND: By the search for new natural compounds with beneficial health effects, cephalopod ink has been considered as an attempt to develop new drugs and functional foods, which is an especially active field in Asia, where cephalopods are a major fishery catch, for which ink sacs are a bi-product and where homeopathic medicine has deep roots. There is a demand to evaluate the safety and influence to the organism. The specific composition and relative abundance of the gut microbiota, which is potentially a major modulator of host metabolism, drives the interaction between functional foods and host health...
July 3, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28668691/colistin-resistance-gene-mcr-1-in-children-s-gut-flora
#6
Yan-Yan Hu, Yue-Ling Wang, Qiao-Ling Sun, Zi-Xian Huang, Han-Yu Wang, Rong Zhang, Gong-Xiang Chen
The aim of this study was to clarify the prevalence and transmission mechanism(s) of mcr-1 in children's gut flora. Fecal samples (n=173) were obtained from non-diarrhea patients at the Children's Hospital of Zhejiang University. Polymerase chain reaction-based analysis indicated that 17 isolates from 9.8% of the samples were positive for mcr-1; these comprised 16 E. coli isolates and one C. freundii. Nine mcr-1-bearing isolates co-expressed extended-spectrum beta-lactamase genes but plasmid-mediated quinolone resistance genes were not detected...
June 28, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28660729/relative-variations-of-gut-microbiota-in-disordered-cholesterol-metabolism-caused-by-high-cholesterol-diet-and-host-genetics
#7
Tao Bo, Shanshan Shao, Dongming Wu, Shaona Niu, Jiajun Zhao, Ling Gao
Recent studies performed provide mechanistic insight into effects of the microbiota on cholesterol metabolism, but less focus was given to how cholesterol impacts the gut microbiota. In this study, ApoE(-/-) Sprague Dawley (SD) rats and their wild-type counterparts (n = 12) were, respectively, allocated for two dietary condition groups (normal chow and high-cholesterol diet). Total 16S rDNA of fecal samples were extracted and sequenced by high-throughput sequencing to determine differences in microbiome composition...
June 28, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28659893/live-probiotic-lactobacillus-johnsonii-bs15-promotes-growth-performance-and-lowers-fat-deposition-by-improving-lipid-metabolism-intestinal-development-and-gut-microflora-in-broilers
#8
Hesong Wang, Xueqin Ni, Xiaodan Qing, Dong Zeng, Min Luo, Lei Liu, Guangyao Li, Kangcheng Pan, Bo Jing
Numerous studies have focused on the beneficial effects of probiotics in animals. Even so, additional information should be obtained about the mechanisms by which a useful probiotic strain successfully exerts such beneficial effects. In this study, we evaluated the effect of the dietary supplementation of both live and disrupted Lactobacillus johnsonii (LJ) strain BS15 in broilers at different ages. Specifically, growth performance, lipid metabolism, gut microbiota, intestinal development, and digestive ability of the broilers were assessed...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28646079/identification-of-flavin-containing-monooxygenase-5-fmo5-as-a-regulator-of-glucose-homeostasis-and-a-potential-sensor-of-gut-bacteria
#9
Flora Scott, Sandra G Gonzalez Malagon, Brett A O'Brien, Diede Fennema, Sunil Veeravalli, Clarissa R Coveney, Ian R Phillips, Elizabeth A Shephard
We have previously identified flavin-containing monooxygenase 5 (FMO5) as a regulator of metabolic ageing. The aim of the present study was to investigate the role of FMO5 in glucose homeostasis and the impact of diet and gut flora on the phenotype of mice in which the Fmo5 gene has been disrupted (Fmo5(-/-) mice). In comparison with wild-type (WT) counterparts, Fmo5(-/-) mice are resistant to age-related changes in glucose homeostasis and maintain the higher glucose tolerance and insulin sensitivity characteristic of young animals...
June 23, 2017: Drug Metabolism and Disposition: the Biological Fate of Chemicals
https://www.readbyqxmd.com/read/28636585/microbiome-a-potential-component-in-the-origin-of-mental-disorders
#10
George B Stefano, Radek Ptacek, Jiri Raboch, Richard M Kream
It is not surprising to find microbiome abnormalities present in psychiatric disorders such as depressive disorders, bipolar disorders, etc. Evolutionary pressure may provide an existential advantage to the host eukaryotic cells in that it survives in an extracellular environment containing non-self cells (e.g., bacteria). This phenomenon is both positive and negative, as with other intercellular processes. In this specific case, the phenomenal amount of information gained from combined bacterial genome could enhance communication between self and non-self cells...
June 21, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28625867/understanding-the-holobiont-how-microbial-metabolites-affect-human-health-and-shape-the-immune-system
#11
REVIEW
Thomas Siegmund Postler, Sankar Ghosh
The human gastrointestinal tract is populated by a diverse, highly mutualistic microbial flora, which is known as the microbiome. Disruptions to the microbiome have been shown to be associated with severe pathologies of the host, including metabolic disease, cancer, and inflammatory bowel disease. Mood and behavior are also susceptible to alterations in the gut microbiota. A particularly striking example of the symbiotic effects of the microbiome is the immune system, whose cells depend critically on a diverse array of microbial metabolites for normal development and behavior...
July 5, 2017: Cell Metabolism
https://www.readbyqxmd.com/read/28624518/role-of-gut-microbiota-against-calcium-oxalate
#12
REVIEW
Humaira Sadaf, Syed Irfan Raza, Syed Waqas Hassan
Nephrolithiasis is a condition marked by the presence or formation of stones in kidneys. Several factors contribute to kidney stones development such as environmental conditions, type of dietary intake, gender and gastrointestinal flora. Most of the kidney stones are composed of calcium phosphate and calcium oxalate, which enter in to the body through diet. Both sources of oxalates become dangerous when normal flora of gastrointestinal tract is disturbed. Oxalobacter and Lactobacillus species exist symbiotically in the human gut and prevent stone formation by altering some biochemical pathways through production of specific enzymes which help in the degradation of oxalate salts...
August 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28623898/early-life-gut-microbial-colonization-shapes-th1-th2-balance-in-asthma-model-in-balb-c-mice
#13
Li-Juan Qian, Shu-Min Kang, Jia-Li Xie, Li Huang, Quan Wen, Yuan-Yuan Fan, Li-Jun Lu, Li Jiang
BACKGROUND: We aimed to investigate the effect of early-life diverse microbial exposures on gut microbial colonization in an OVA-induced asthma model in BALB/c mice. METHODS: BALB/c mice were divided into 4 groups: A, offsprings were kept in a SPF environment during fetal, lactation, and childhood periods; B, offsprings were kept in the SPF environment during fetal and lactation periods, and kept in the general environment during childhood; C, offsprings were kept in the SPF environment only during fetal period, and then kept in the general environment; and D, offsprings were kept in the general environment during whole periods...
June 17, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28621109/comparative-genomic-analysis-of-lactobacillus-plantarum-gb-lp1-isolated-from-traditional-korean-fermented-food
#14
Jihyun Yu, Sojin Ahn, Kwondo Kim, Kelsey Caetano-Anolles, Chanho Lee, Jungsun Kang, Kyungjin Cho, SookHee Yoon, Dae-Kyung Kang, Heebal Kim
As probiotics play an important role in maintaining a healthy gut flora environment through antitoxin activity and inhibition of pathogen colonization, they have been of interest to the medical research community for quite some time now. Probiotic bacteria such as Lactobacillus plantarum, which can be found in fermented food, are of particular interest given their easy accessibility. We performed whole genome sequencing and genomic analysis on a GB-LP1 strain of L. plantarum isolated from Korean traditional fermented food; this strain is well known for its functions in immune response, suppression of pathogen growth and anti-toxin effects...
June 16, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28620877/pathogenesis-and-persistence-of-cryptoglandular-anal-fistula-a-systematic-review
#15
REVIEW
Jeremy Sugrue, Johan Nordenstam, Herand Abcarian, Amelia Bartholomew, Joel L Schwartz, Anders Mellgren, Philip J Tozer
Anal fistulas continue to be a problem for patients and surgeons alike despite scientific advances. While patient and anatomical characteristics are important to surgeons who are evaluating patients with anal fistulas, their development and persistence likely involves a multifaceted interaction of histological, microbiological, and molecular factors. Histological studies have shown that anal fistulas are variably epithelialized and are surrounded by dense collagen tissue with pockets of inflammatory cells. Yet, it remains unknown if or how histological differences impact fistula healing...
June 2017: Techniques in Coloproctology
https://www.readbyqxmd.com/read/28610999/changes-in-faecal-bacteria-during-fattening-in-finishing-swine
#16
Tomomi Ban-Tokuda, Sakiko Maekawa, Takehiro Miwa, Sou Ohkawara, Hiroki Matsui
Body fat accumulation in mice and human is linked to the percentage of Firmicutes and Bacteroidetes, two bacterial phyla dominant in the large intestine. However, little is known about the relationship between the composition of the gut microbiota and fattening in pig. This study aimed to investigate the abundance of Firmicutes, Bacteroidetes, and Bacteroides, which is the major genus within Bacteroidetes, in porcine faeces during fattening. Ten 4-month-old crossbred pigs were given free access to commercial feed for fattening and water for 14 weeks...
June 10, 2017: Anaerobe
https://www.readbyqxmd.com/read/28609785/comprehensive-analysis-of-microorganisms-accompanying-human-archaeological-remains
#17
Anna Philips, Ireneusz Stolarek, Bogna Kuczkowska, Anna Juras, Luiza Handschuh, Janusz Piontek, Piotr Kozlowski, Marek Figlerowicz
Background.: Metagenome analysis has become a common source of information about microbial communities that occupy a wide range of niches, including archaeological specimens. It has been shown that vast majority of DNA extracted from ancient samples come from bacteria (presumably modern contaminants). However, characterization of microbial DNA accompanying human remains has never been done systematically for a wide range of different samples. Findings.: We used metagenomic approaches to perform comparative analyses of microorganism communities present in 161 archaeological human remains...
June 13, 2017: GigaScience
https://www.readbyqxmd.com/read/28603226/infections-in-patients-affected-by-liver-cirrhosis-an-update
#18
Tiziana Ascione, Giusy Di Flumeri, Giovanni Boccia, Francesco De Caro
Patients with liver cirrhosis present an increased incidence of infections. The main cause has been founded in alterations of the enteric flora and of the intestinal barrier probably due to portal hypertension, in addition to a reticulo-endothelial system dysfunction. Furthermore, those living with cirrhosis can report a high predisposition to sepsis and septic shock, due to the excessive response of pro-inflammatory cytokines and a complessive hemodynamic derangement. By the analysis in the experimental model of the cirrhotic rat, it was demonstrated that radio-labelled Escherichia coli given by the oral route resulted in the location of the bacteria in the gut, the ascitic fluid and mesenteric lymph nodes, a phenomenon known as bacterial translocation...
June 1, 2017: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/28588430/gut-microbial-diversity-in-health-and-disease-experience-of-healthy-indian-subjects-and-colon-carcinoma-and-inflammatory-bowel-disease-patients
#19
V Deepak Bamola, Arnab Ghosh, Raj Kishor Kapardar, Banwari Lal, Simrita Cheema, Priyangshu Sarma, Rama Chaudhry
Background: The intestinal microbiota, through complex interactions with the gut mucosa, play a key role in the pathogenesis of colon carcinoma and inflammatory bowel disease (IBD). The disease condition and dietary habits both influence gut microbial diversity. Objective: The aim of this study was to assess the gut microbial profile of healthy subjects and patients with colon carcinoma and IBD. Healthy subjects included 'Indian vegetarians/lactovegetarians', who eat plant produce, milk and milk products, and 'Indian non-vegetarians', who eat plant produce, milk and milk products, certain meats and fish, and the eggs of certain birds and fish...
2017: Microbial Ecology in Health and Disease
https://www.readbyqxmd.com/read/28587887/effect-of-diet-and-gut-environment-on-the-gastrointestinal-formation-of-n-nitroso-compounds-a-review
#20
REVIEW
Jun Kobayashi
Diet is associated with the development of cancer in the gastrointestinal (GI) tract, because dietary nitrate and nitrite are the main nitrosating agents that are responsible for the formation of carcinogenic N-nitroso compounds (NOCs) when nitrosatable substrates, such as amine and amide, are present in the GI tract. However, whether the nitroso compounds become beneficial S-nitroso compounds or carcinogenic NOCs might depend on dietary and environmental factors including food stuffs, gastric acidity, microbial flora, and the mean transit time of digesta...
June 3, 2017: Nitric Oxide: Biology and Chemistry
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