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https://www.readbyqxmd.com/read/28732111/characterization-of-metabolic-pathways-and-absorption-of-sea-cucumber-saponins-holothurin-a-and-echinoside-a-in-vitro-and-in-vivo
#1
Shanshan Song, Lingyu Zhang, Jian Cao, Gao Xiang, Peixu Cong, Ping Dong, Zhaojie Li, Changhu Xue, Yong Xue, Yuming Wang
Sea cucumber saponins (SCSs) exhibit a wide spectrum of bioactivities, but their metabolic characteristics are not well elucidated. In this study, the metabolism of holothurin A (HA) and echinoside A (EA), 2 major saponins in sea cucumber, by gut microflora were investigated. First, we conducted an in vitro study, where in the SCSs were incubated with intestinal microflora and the metabolites were detected by high pressure liquid chromatography-high resolution mass spectrometry. We also conducted an in vivo study on rats, where in the intestinal contents, serum, urine, and feces were collected and evaluated after oral administration of SCSs...
July 21, 2017: Journal of Food Science
https://www.readbyqxmd.com/read/28727817/immunogenicity-of-a-novel-clade-b-hiv-1-vaccine-combination-results-of-phase-1-randomized-placebo-controlled-trial-of-an-hiv-1-gm-csf-expressing-dna-prime-with-a-modified-vaccinia-ankara-vaccine-boost-in-healthy-hiv-1-uninfected-adults
#2
Susan P Buchbinder, Nicole A Grunenberg, Brittany J Sanchez, Kelly E Seaton, Guido Ferrari, M Anthony Moody, Nicole Frahm, David C Montefiori, Christine M Hay, Paul A Goepfert, Lindsey R Baden, Harriet L Robinson, Xuesong Yu, Peter B Gilbert, M Juliana McElrath, Yunda Huang, Georgia D Tomaras
BACKGROUND: A phase 1 trial of a clade B HIV vaccine in HIV-uninfected adults evaluated the safety and immunogenicity of a DNA prime co-expressing GM-CSF (Dg) followed by different numbers and intervals of modified vaccinia Ankara Boosts (M). Both vaccines produce virus-like particles presenting membrane-bound Env. METHODS: Four US sites randomized 48 participants to receiving 1/10th the DNA dose as DgDgMMM given at 0, 2, 4, 6 and 8 months, or full dose DgDgM_M or DgDgMM_M regimens, given at 0, 2, 4, and 8 months, and 0, 2, 4, 6, and 10 months, respectively...
2017: PloS One
https://www.readbyqxmd.com/read/28721289/fluoroquinolone-resistant-escherichia-coli-in-intestinal-flora-of-patients-undergoing-transrectal-ultrasound-guided-prostate-biopsy-possible-shift-in-biopsy-prophylaxis
#3
Przemysław Adamczyk, Kajetan Juszczak, Małgorzata Prondzinska, Anna Kędzierska, Hanna Szwajkert-Sobiecka, Tomasz Drewa
INTRODUCTION: Infection of prostate gland following biopsy is common complication. Most common pathogen is E.coli. Since fluorochinolones are commonly prescribed as prophylaxis, infection caused by E.coli leads to complicated infections, especially due to fluoroquinolone-resistant species. The aim of this study was to evaluate the incidence of fluoroquinolone-resistant E.coli species in rectal swabs of patients undergoing prostate biopsy and to define appropriate antimicrobial agent as prostate biopsy prophylaxis...
June 30, 2017: Central European Journal of Urology
https://www.readbyqxmd.com/read/28712163/molecular-characterization-of-fecal-microbiota-of-healthy-chinese-tobacco-smoker-subjects-in-shaanxi-province-xi-an-china
#4
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/28709803/an-ocular-commensal-protects-against-corneal-infection-by-driving-an-interleukin-17-response-from-mucosal-%C3%AE-%C3%AE-t-cells
#5
Anthony J St Leger, Jigar V Desai, Rebecca A Drummond, Abirami Kugadas, Fatimah Almaghrabi, Phyllis Silver, Kumarkrishna Raychaudhuri, Mihaela Gadjeva, Yoichiro Iwakura, Michail S Lionakis, Rachel R Caspi
Mucosal sites such as the intestine, oral cavity, nasopharynx, and vagina all have associated commensal flora. The surface of the eye is also a mucosal site, but proof of a living, resident ocular microbiome remains elusive. Here, we used a mouse model of ocular surface disease to reveal that commensals were present in the ocular mucosa and had functional immunological consequences. We isolated one such candidate commensal, Corynebacterium mastitidis, and showed that this organism elicited a commensal-specific interleukin-17 response from γδ T cells in the ocular mucosa that was central to local immunity...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28703111/clinical-and-microbiological-aspects-of-the-use-of-lactobacillus-rhamnosus-pl1-strains-in-proctological-patients-with-symptoms-of-chronic-proctitis
#6
K Borycka-Kiciak, M Strus, P Pietrzak, K Wawiernia, D Mikołajczyk, M Gałęcka, P Heczko, W Tarnowski
Recurrent proctitis and the symptoms associated therewith pose significant clinical problem in proctological patients. The objective of this study was to assess the impact of the probiotic Lactobacillus rhamnosus PL1 strain on the clinical presentation and composition of intestinal microbiota in patients with symptoms of proctitis in the course of hemorrhoidal disease and diverticulosis. Material consisted of 24 patients in whom no complete clinical improvement could be obtained after the treatment of the underlying disease...
June 30, 2017: Polski Przeglad Chirurgiczny
https://www.readbyqxmd.com/read/28701620/comparative-analysis-of-the-intestinal-flora-in-type-2-diabetes-and-nondiabetic-mice
#7
Masanori Horie, Takamasa Miura, Satomi Hirakata, Akira Hosoyama, Sakiko Sugino, Aya Umeno, Kazutoshi Murotomi, Yasukazu Yoshida, Taisuke Koike
A relationship between type 2 diabetes mellitus (T2DM) and intestinal flora has been suggested since development of analysis technology for intestinal flora. An animal model of T2DM is important for investigation of T2DM. Although there are some animal models of T2DM, a comparison of the intestinal flora of healthy animals with that of T2DM animals has not yet been reported. The intestinal flora of Tsumura Suzuki Obese Diabetes (TSOD) mice was compared with that of Tsumura, Suzuki, Non Obesity (TSNO) mice in the present study...
July 12, 2017: Experimental Animals
https://www.readbyqxmd.com/read/28698079/purification-and-fermentation-characteristics-of-exopolysaccharide-from-fomitopsis-castaneus-imaz
#8
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/28693929/impact-of-broad-spectrum-antimicrobial-treatment-on-the-ecology-of-intestinal-flora
#9
Jen-Jia Yang, Jann-Tay Wang, Aristine Cheng, Yu-Chung Chuang, Wang-Huei Sheng
BACKGROUND: Suppression of intestinal flora by broad-spectrum antimicrobial agents facilitated risk of colonization or infection with resistant pathogen. We aimed to investigate the changes in bowel carriage of target resistant microorganisms (TRO) among patients treated with three different classes of Pseudomonas-sparing broad-spectrum antimicrobial agents (ertapenem, moxifloxacin and flomoxef) with anaerobic coverage. Risk factors for developing colonization of TRO were also analyzed...
June 28, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28693067/-chinese-expert-consensus-for-non-antiinfective-effects-and-clinical-use-of-macrolides
#10
J T Lin, Y M Zhang, X Zhou, C Z Wang, M Huang, C T Liu, C G Wu, H Y Wan, W C Yu, Y R Dai
Important/potential value of macrolides has been proved in the management of chronic respiratory diseases by increasing basic and clinical trials.Through three face-to-face discussions, 10 experts examined important data and drafted this consensus related to macrolides: (1) mechanism of non-antiinfective effects; (2) clinical use in chronic respiratory diseases; (3) cautions of long-term use.The mechanism out of non-antiinfective effects includes anti-inflammatory effect, modifying airway secretion, immune-regulation related to antibacterial effect, corticoid saving effect and anti-viral effect...
July 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28682224/-challenges-set-by-the-microbiota
#11
Patrice Debré
The microbiota designates the various flora of commensal microbes of living species. Most research in human focusing mainly on the intestinal microbiota, we will limit ourselves to its description and role in physiology and pathology. The intestinal microbiota acts on digestion and the immune system. It seems responsible, at least in part, for obesity, digestive cancers, several autoimmune and allergic pathologies, and pathologies of the nervous system. The role of prebiotics, probiotics, xenobiotics and stool transplantations will be discussed...
2017: Biologie Aujourd'hui
https://www.readbyqxmd.com/read/28680375/tlr-myd88-mediated-innate-immunity-in-intestinal-graft-versus-host-disease
#12
REVIEW
Young-Kwan Lee, Myungsoo Kang, Eun Young Choi
Graft-versus-host disease (GHVD) is a severe complication after allogeneic hematopoietic stem cell transplantation. The degree of inflammation in the gastrointestinal tract, a major GVHD target organ, correlates with the disease severity. Intestinal inflammation is initiated by epithelial damage caused by pre-conditioning irradiation. In combination with damages caused by donor-derived T cells, such damage disrupts the epithelial barrier and exposes innate immune cells to pathogenic and commensal intestinal bacteria, which release ligands for Toll-like receptors (TLRs)...
June 2017: Immune Network
https://www.readbyqxmd.com/read/28677158/update-on-intestinal-microbiota-in-crohn-s-disease-2017-mechanisms-clinical-application-adverse-reactions-and-outlook
#13
REVIEW
Zhaohua Shen, Changxin Zhu, Yongsheng Quan, Wei Yuan, Shuai Wu, Zhenyu Yang, Weiwei Luo, Bei Tan, Xiaoyan Wang
The pathogenesis of CD is complex and it is thought to be associated with the environment, immune, hereditary, microbe and other factors. If the balance between the host and the intestinal microbes in CD patients was broken, immune-inflammatory response of susceptible individuals might be triggered. Probiotics could improve the intestinal microbial flora balance and treat human effectively. There are several new mechanisms which might explain the role of probiotics. Fecal microbiota transplantation (FMT) is becoming more and more attractive in treating a large amount of digestive system diseases which are related to the dysbiosis of intestinal microbiota...
July 5, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28673241/effects-of-melanin-from-sepiella-maindroni-ink-msmi-on-the-intestinal-microbiome-of-mice
#14
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/28670644/carriage-of-multidrug-resistant-enterococcus-faecium-and-enterococcus-faecalis-among-apparently-healthy-humans
#15
Solayide A Adesida, Cynthia C Ezenta, Ajoke O Adagbada, Amudat A Aladesokan, Akitoye O Coker
BACKGROUND: Enterococci are indigenous flora of the gastro-intestinal tracts of animals and humans. Recently, interest in two major species, E. faecium and E. faecalis, has heightened because of their ability to cause serious infections and their intrinsic resistance to antimicrobials. This study was aimed at determining the prevalence of E. faecium and E. faecalis in human faecal samples and evaluating the susceptibility of the isolates to antibiotics. MATERIALS AND METHODS: One hundred faecal samples were collected from apparently healthy individuals and analysed using conventionalbacteriological methods...
2017: African Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28668691/colistin-resistance-gene-mcr-1-in-children-s-gut-flora
#16
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/28659893/live-probiotic-lactobacillus-johnsonii-bs15-promotes-growth-performance-and-lowers-fat-deposition-by-improving-lipid-metabolism-intestinal-development-and-gut-microflora-in-broilers
#17
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/28659559/microflora-in-the-soft-tissue-of-the-pacific-oyster-crassostrea-gigas-exposed-to-the-harmful-microalga-heterosigma-akashiwo
#18
Shinkuro Takenaka, Takeshi Yoshikawa, Shusaku Kadowaki, Suguru Okunishi, Hiroto Maeda
 A marine raphidophyte Heterosigma akashiwo is a causative agent of harmful microalgal blooms, which often cause the massive mortality of aquacultured finfish. In the present study, the Pacific oyster Crassostrea gigas was reared with H. akashiwo, and effect of the microalga on filter-feeding behavior and microflora of the gastrointestinal tract was investigated. The intake of the raphidophyte cells inhibited the molluscan filter-feeding activities, suggesting the negative physiological effect of the microalgal cell contents...
2017: Biocontrol Science
https://www.readbyqxmd.com/read/28625867/understanding-the-holobiont-how-microbial-metabolites-affect-human-health-and-shape-the-immune-system
#19
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/28623898/early-life-gut-microbial-colonization-shapes-th1-th2-balance-in-asthma-model-in-balb-c-mice
#20
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
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