keyword
MENU ▼
Read by QxMD icon Read
search

oral microbiota

keyword
https://www.readbyqxmd.com/read/28814952/regulative-effects-of-curcumin-spice-administration-on-gut-microbiota-and-its-pharmacological-implications
#1
Liang Shen, Lu Liu, Hong-Fang Ji
Curcumin, the major active component of turmeric (Curcuma longa), is widely used as a spice and food-coloring agent, and also exhibits multiple biological activities. However, as curcumin has poor systemic bioavailability its pharmacology remains to be elucidated. Owing to the high concentration of curcumin in the gastrointestinal tract after oral administration, we hypothesize that it may exert regulative effects on the gut microbiota. We investigated the regulative effects of oral curcumin administration on the gut microbiota of C57BL/6 mice and found that curcumin significantly affected the abundance of several representative families in gut microbial communities, including Prevotellaceae, Bacteroidaceae, and Rikenellaceae...
2017: Food & Nutrition Research
https://www.readbyqxmd.com/read/28812207/the-vaginal-microbiome-and-its-potential-to-impact-efficacy-of-hiv-pre-exposure-prophylaxis-for-women
#2
REVIEW
Jennifer Velloza, Renee Heffron
PURPOSE OF REVIEW: This review describes existing evidence addressing the potential modulation of pre-exposure prophylaxis (PrEP) products, specifically 1% tenofovir (TFV) gel and oral tenofovir-based PrEP, by vaginal dysbiosis and discusses future considerations for delivering novel, long-acting PrEP products to women at high risk for vaginal dysbiosis and HIV. RECENT FINDINGS: We describe results from analyses investigating the modification of PrEP efficacy by vaginal dysbiosis and studies of biological mechanisms that could render PrEP ineffective in the presence of specific microbiota...
August 15, 2017: Current HIV/AIDS Reports
https://www.readbyqxmd.com/read/28812142/tcdd-administered-on-activated-carbon-eliminates-bioavailability-and-subsequent-shifts-to-a-key-murine-gut-commensal
#3
Robert D Stedtfeld, J Brett Sallach, Robert B Crawford, Tiffany M Stedtfeld, Maggie R Williams, Hassan Waseem, Cliff T Johnston, Hui Li, Brian J Teppen, Norbert E Kaminski, Stephen A Boyd, James M Tiedje, Syed A Hashsham
Activated carbon (AC) is an increasingly attractive remediation alternative for the sequestration of dioxins at contaminated sites globally. However, the potential for AC to reduce the bioavailability of dioxins in mammals and the residing gut microbiota has received less attention. This question was partially answered in a recent study examining 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced hallmark toxic responses in mice administered with TCDD sequestered by AC or freely available in corn oil by oral gavage...
August 15, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28808158/the-influence-of-the-gut-microbiota-composition-on-campylobacter-jejuni-colonization-in-chickens
#4
Zifeng Han, Thomas Willer, Li Li, Colin Pielsticker, Ivan Rychlik, Philippe Velge, Bernd Kaspers, Silke Rautenschlein
Campylobacter jejuni (C. jejuni)-host-interaction may be affected by the host's gut microbiota through competitive exclusion, metabolites or modification of the immune response. To understand this interaction C. jejuni colonization and local immune responses were compared in chickens with different gut microbiota composition. Birds were treated with an antibiotic cocktail (AT) (Experiment 1 and 2) or raised under germ-free (GF) conditions (Experiment 3). At 18 days post hatch (dph), they were either orally inoculated with 10(4) colony forming units (CFU) of C...
August 14, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28807017/the-urinary-microbiota-of-men-and-women-and-its-changes-in-women-during-bacterial-vaginosis-and-antibiotic-treatment
#5
Cornelia Gottschick, Zhi-Luo Deng, Marius Vital, Clarissa Masur, Christoph Abels, Dietmar H Pieper, Irene Wagner-Döbler
BACKGROUND: The urinary microbiota is similarly complex as the vaginal and penile microbiota, yet its role as a reservoir for pathogens and for recurrent polymicrobial biofilm diseases like bacterial vaginosis (BV) is not clear. RESULTS: Here, we analysed the urinary microbiota of healthy men and women and compared it with that of women during BV and after antibiotic treatment using next-generation sequencing of the 16S rRNA gene V1-V2 regions. Eight different community types, so called urotypes (UT), were identified in healthy humans, all of which were shared between men and women, except UT 7, dominated in relative abundance by Lactobacillus crispatus, which was found in healthy women only...
August 14, 2017: Microbiome
https://www.readbyqxmd.com/read/28805207/periodontal-diseases
#6
REVIEW
Denis F Kinane, Panagiota G Stathopoulou, Panos N Papapanou
Periodontal diseases comprise a wide range of inflammatory conditions that affect the supporting structures of the teeth (the gingiva, bone and periodontal ligament), which could lead to tooth loss and contribute to systemic inflammation. Chronic periodontitis predominantly affects adults, but aggressive periodontitis may occasionally occur in children. Periodontal disease initiation and propagation is through a dysbiosis of the commensal oral microbiota (dental plaque), which then interacts with the immune defences of the host, leading to inflammation and disease...
June 22, 2017: Nature Reviews. Disease Primers
https://www.readbyqxmd.com/read/28803012/effect-of-fermented-milk-containing-lactobacillus-rhamnosus-sd11-on-oral-microbiota-of-healthy-volunteers-a-randomized-clinical-trial
#7
P Rungsri, N Akkarachaneeyakorn, M Wongsuwanlert, S Piwat, P Nantarakchaikul, R Teanpaisan
The aims of this study were to evaluate whether short-term consumption of fermented milk containing Lactobacillus rhamnosus SD11 affected levels of oral microbiota in vivo and whether L. rhamnosus SD11 could colonize in the human mouth. We also monitored for potential side effects of the probiotic. The applicability of using L. rhamnosus SD11 compared with Lactobacillus bulgaricus as a starter culture for fermented milk was evaluated. After informed consent, 43 healthy young adults were recruited and randomly assigned to either the probiotic or control group and received fermented milk containing L...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28800622/microbial-profile-comparisons-of-saliva-pooled-and-site-specific-subgingival-samples-in-periodontitis-patients
#8
Daniel Belstrøm, Maria Lynn Sembler-Møller, Maria Anastasia Grande, Nikolai Kirkby, Sean Liam Cotton, Bruce J Paster, Palle Holmstrup
OBJECTIVES: The purpose of this study was to compare microbial profiles of saliva, pooled and site-specific subgingival samples in patients with periodontitis. We tested the hypotheses that saliva can be an alternative to pooled subgingival samples, when screening for presence of periopathogens. DESIGN: Site specific subgingival plaque samples (n = 54), pooled subgingival plaque samples (n = 18) and stimulated saliva samples (n = 18) were collected from 18 patients with generalized chronic periodontitis...
2017: PloS One
https://www.readbyqxmd.com/read/28792372/treatment-failure-of-bacterial-vaginosis-is-not-associated-with-higher-loads-of-atopobium-vaginae-and-gardnerella-vaginalis
#9
Carolina Sanitá Tafner Ferreira, Gilbert Gerard Donders, Cristina Maria Garcia de Lima Parada, Andrea da Rocha Tristão, Thaiz Fernandes, Márcia Guimarães da Silva, Camila Marconi
PURPOSE: Cervicovaginal Atopobium vaginae and Gardnerella vaginalis are strongly associated with bacterial vaginosis (BV) and are the main components of vaginal biofilms. The low efficacy of BV treatment with metronidazole may be due to the presence of such biofilms. Thus, the aim of this study was to compare the pretreatment cervicovaginal loads of A. vaginae and G. vaginalis for women who restored normal flora and those who persisted with BV after a full course of oral metronidazole...
August 10, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28790988/non-antibiotic-isotretinoin-treatment-differentially-controls-propionibacterium-acnes-on-skin-of-acne-patients
#10
Angela E Ryan-Kewley, David R Williams, Neill Hepburn, Ronald A Dixon
Emergence and potential transfer of antibiotic resistance in skin microorganisms is of current concern in medicine especially in dermatology contexts where long term treatment with antibiotics is common. Remarkably, non-antibiotic therapy in the form of isotretinoin - a non-antimicrobial retinoid is effective at reducing or eradicating the anaerobe Propionibacterium acnes which is causally involved in the complex pathogenesis of Acne vulgaris. This study measured the extent of colonization of P. acnes in patients with primary cystic or severe acne from three defined skin sites in 'non-lesion' areas before, during and after treatment with isotretinoin...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28780386/salivary-microbiome-in-non-oral-disease-a-summary-of-evidence-and-commentary
#11
REVIEW
Aneesha Acharya, Yuki Chan, Supriya Kheur, Li Jian Jin, Rory M Watt, Nikos Mattheos
OBJECTIVE: The advent of high-throughput sequencing and 'omic' technologies is facilitating an 'open-ended' understanding of the human microbial community and its interplay with health. This commentary aims to present key perspectives and summarize current evidence from metagenomic studies of salivary microbiota in relation to general health and systemic diseases. DESIGN: A narrative review of studies that described salivary microbiome composition in relation to various general health conditions was conducted and the main results were summarized...
July 29, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28780087/short-communication-the-mammalian-lignan-enterolactone-is-absorbed-by-newborn-dairy-calves-fed-enterolactone-enriched-milk
#12
C P Ghedini, N L Whitehouse, D C Moura, A S Oliveira, A F Brito
Flaxseed is the richest source of the plant lignan secoisolariciresinol diglucoside, which is converted to the mammalian lignans enterolactone (EL) and enterodiol by the gut microbiota of ruminants and humans. Enterolactone has been associated with improved animal and human health due to its antioxidant and anticarcinogenic properties. The objective of this study was to determine the pharmacokinetics of EL in newborn dairy calves fed milk replacer or EL-enriched milk. We hypothesized that newborn Holstein calves fed EL-enriched milk would have greater area under the curve and plasma concentration of EL compared with those fed milk replacer...
August 2, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28775282/ecological-effect-of-arginine-on-oral-microbiota
#13
Xin Zheng, Jinzhi He, Lin Wang, Shuangshuang Zhou, Xian Peng, Shi Huang, Liwei Zheng, Lei Cheng, Yuqing Hao, Jiyao Li, Jian Xu, Xin Xu, Xuedong Zhou
Dental caries is closely associated with the microbial dybiosis between acidogenic/aciduric pathogens and alkali-generating commensal bacteria colonized in the oral cavity. Our recent studies have shown that arginine may represent a promising anti-caries agent by modulating microbial composition in an in vitro consortium. However, the effect of arginine on the oral microbiota has yet to be comprehensively delineated in either clinical cohort or in vitro biofilm models that better represent the microbial diversity of oral cavity...
August 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28774842/bioinspired-butyrate-functionalized-nanovehicles-for-targeted-oral-delivery-of-biomacromolecular-drugs
#14
Lei Wu, Min Liu, Wei Shan, Xi Zhu, Lijia Li, Zhirong Zhang, Yuan Huang
Ligand-functionalization can increase the affinity of nanoparticles (NPs) with targeted cells. However, one major defect of ligands still exists in oral administration: limited receptor recognition. The hindrance of mucus network and deactivation of enzymes severely challenge the targeting efficiency of macromolecular ligands. Inspired by "molecular exchange" between intestinal microbiota and host cells, we anchored microbiota metabolite butyrate on classical "mucus-inert" polyethylene glycol (PEG) NPs. Butyrate has unique advantages of low molecule weight, high hydrophilicity and chemical stability...
August 1, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28768836/s-equol-activates-camp-signaling-at-the-plasma-membrane-of-ins-1-pancreatic-%C3%AE-cells-and-protects-against-streptozotocin-induced-hyperglycemia-by-increasing-%C3%AE-cell-function-in-male-mice
#15
Hiroko Horiuchi, Atsuko Usami, Rie Shirai, Naoki Harada, Shinichi Ikushiro, Toshiyuki Sakaki, Yoshihisa Nakano, Hiroshi Inui, Ryoichi Yamaji
Background:S-equol, which is enantioselectively produced from daidzein by gut microbiota, has been suggested as a chemopreventive agent against type 2 diabetes mellitus (T2DM), but the underlying mechanisms remain unclear.Objective: We investigated the effects of S-equol on pancreatic β-cell function.Methods: β-Cell growth and insulin secretion were evaluated with male Institute of Cancer Research mice and isolated pancreatic islets from the mice, respectively. The mechanisms by which S-equol stimulated β-cell response were examined in INS-1 β-cells...
August 2, 2017: Journal of Nutrition
https://www.readbyqxmd.com/read/28767339/assessing-gut-microbiota-perturbations-during-the-early-phase-of-infectious-diarrhea-in-vietnamese-children
#16
Hao Chung The, Paola Florez de Sessions, Song Jie, Duy Pham Thanh, Corinne N Thompson, Chau Nguyen Ngoc Minh, Collins Wenhan Chu, Tuan-Anh Tran, Nicholas R Thomson, Guy E Thwaites, Maia A Rabaa, Martin Hibberd, Stephen Baker
Diarrheal diseases remain the second most common cause of mortality in young children in developing countries. Efforts have been made to explore the impact of diarrhea on bacterial communities in the human gut, but a thorough understanding has been impeded by inadequate resolution in bacterial identification and the examination of only few etiological agents. Here, by profiling an extended region of the 16S rRNA gene in the fecal microbiome, we aimed to elucidate the nature of gut microbiome perturbations during the early phase of infectious diarrhea caused by various etiological agents in Vietnamese children...
August 2, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28765642/anti-diabetic-effects-of-clostridium-butyricum-cgmcc0313-1-through-promoting-the-growth-of-gut-butyrate-producing-bacteria-in-type-2-diabetic-mice
#17
Lingling Jia, Dongyao Li, Ninghan Feng, Muhammad Shamoon, Zhenghua Sun, Lei Ding, Hao Zhang, Wei Chen, Jia Sun, Yong Q Chen
Patients with type 2 diabetes (T2D) have decreased butyrate-producing bacteria. We hypothesized that supplementation with butyrate-producing bacteria may exert beneficial effects on T2D. The current study investigated the effects of well-characterized butyrate-producing bacteria Clostridium butyricum CGMCC0313.1 (CB0313.1) on hyperglycemia and associated metabolic dysfunction in two diabetic mouse models. CB0313.1 was administered daily by oral gavage to leptin (db/db) mice for 5 weeks starting from 3 weeks of age, and to HF diabetic mice induced by high fat diet (HFD) plus streptozotocin (STZ) in C57BL/6J mice for 13 weeks starting from 4 weeks of age...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28762074/the-oral-microbiota-in-patients-with-pancreatic-cancer-patients-with-ipmns-and-controls-a-pilot-study
#18
Sara H Olson, Jaya Satagopan, Youming Xu, Lilan Ling, Siok Leong, Irene Orlow, Amethyst Saldia, Peter Li, Pamela Nunes, Vincent Madonia, Peter J Allen, Eileen O'Reilly, Eric Pamer, Robert C Kurtz
PURPOSE: Poor oral health appears to be a risk factor for pancreatic cancer, possibly implicating the oral microbiota. In this pilot study, we evaluated the characteristics of the oral microbiota in patients with pancreatic ductal adenocarcinoma (PDAC), intraductal papillary mucinous neoplasms (IPMN), and healthy controls. METHODS: Forty newly diagnosed PDAC patients, 39 IPMN patients, and 58 controls, excluding current smokers and users of antibiotics, provided saliva samples...
July 31, 2017: Cancer Causes & Control: CCC
https://www.readbyqxmd.com/read/28761934/metabolic-fingerprints-from-the-human-oral-microbiome-reveal-a-vast-knowledge-gap-of-secreted-small-peptidic-molecules
#19
Anna Edlund, Neha Garg, Hosein Mohimani, Alexey Gurevich, Xuesong He, Wenyuan Shi, Pieter C Dorrestein, Jeffrey S McLean
Recent research indicates that the human microbiota play key roles in maintaining health by providing essential nutrients, providing immune education, and preventing pathogen expansion. Processes underlying the transition from a healthy human microbiome to a disease-associated microbiome are poorly understood, partially because of the potential influences from a wide diversity of bacterium-derived compounds that are illy defined. Here, we present the analysis of peptidic small molecules (SMs) secreted from bacteria and viewed from a temporal perspective...
July 2017: MSystems
https://www.readbyqxmd.com/read/28761156/aggravation-of-collagen-induced-arthritis-by-orally-administered-porphyromonas-gingivalis-through-modulation-of-the-gut-microbiota-and-gut-immune-system
#20
Keisuke Sato, Naoki Takahashi, Tamotsu Kato, Yumi Matsuda, Mai Yokoji, Miki Yamada, Takako Nakajima, Naoki Kondo, Naoto Endo, Reiko Yamamoto, Yuichiro Noiri, Hiroshi Ohno, Kazuhisa Yamazaki
Porhyromonas gingivalis, a causative bacterium of periodontitis, is implicated in the etiology of rheumatoid arthritis (RA), mainly because of expressing peptidyl arginine deiminase (PAD) that generates RA-related autoantigens. However, compared with other periodontopathic bacteria, the precise role of P. gingivalis in RA is largely unknown. We found that orally administered P. gingivalis changed the gut microbiome with concomitant elevation of serum endotoxin and inflammatory markers, and impairment of the gut barrier function...
July 31, 2017: Scientific Reports
keyword
keyword
66078
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"