keyword
MENU ▼
Read by QxMD icon Read
search

Microbiot

keyword
https://www.readbyqxmd.com/read/28406401/le-microbiote-intestinal%C3%A2-un-organe-%C3%A3-part-enti%C3%A3-re
#1
Jean-Jacques Morand
No abstract text is available yet for this article.
February 1, 2017: Médecine et Santé Tropicales
https://www.readbyqxmd.com/read/28404738/microbiotal-host-interactions-and-hypertension
#2
REVIEW
Sarah Galla, Saroj Chakraborty, Blair Mell, Matam Vijay-Kumar, Bina Joe
Hypertension, or elevated blood pressure (BP), has been extensively researched over decades and clearly demonstrated to be caused due to a combination of host genetic and environmental factors. Although much research remains to be conducted to pin-point the precise genetic elements on the host genome that control BP, new lines of evidence are emerging to indicate that, besides the host genome, the genomes of all indigenous commensal micro-organisms, collectively referred to as the microbial metagenome or microbiome, are important, but largely understudied, determinants of BP...
May 2017: Physiology
https://www.readbyqxmd.com/read/28196137/effects-of-dietary-nutrient-levels-on-microbial-community-composition-and-diversity-in-the-ileal-contents-of-pregnant-huanjiang-mini-pigs
#3
Yujiao Ji, Xiangfeng Kong, Huawei Li, Qian Zhu, Qiuping Guo, Yulong Yin
The mammalian gut microbiota influences various metabolic and physiological processes. Substantial metabolic changes occur during a healthy pregnancy that may be related to microbiota composition dynamics. However, the effect of diet on intestinal microbiota composition and diversity during pregnancy remains unclear. We examined the ileal contents of Huanjiang mini-pigs at two pregnancy stages to determine the effects of dietary nutrient levels on such microbial communities. Animals received either a higher-nutrient (HN) diet formulated to meet US National Research Council requirements or a lower-nutrient (LN) diet that met the Chinese National Feeding Standard recommendations...
2017: PloS One
https://www.readbyqxmd.com/read/28189107/c-elegans-and-its-bacterial-diet-as-a-model-for-systems-level-understanding-of-host-microbiota-interactions
#4
REVIEW
Jingyan Zhang, Amy D Holdorf, Albertha Jm Walhout
Resident microbes of the human body, particularly the gut microbiota, provide essential functions for the host, and, therefore, have important roles in human health as well as mitigating disease. It is difficult to study the mechanisms by which the microbiota affect human health, especially at a systems-level, due to heterogeneity of human genomes, the complexity and heterogeneity of the gut microbiota, the challenge of growing these bacteria in the laboratory, and the lack of bacterial genetics in most microbiotal species...
February 8, 2017: Current Opinion in Biotechnology
https://www.readbyqxmd.com/read/28131419/-predictive-biomarkers-of-efficacy-of-checkpoint-blockade-inhibitors-in-cancer-treatment
#5
Michaël Duruisseaux, Cécile Lize-Dufranc, Céline Badoual, Frédéric Bibeau
The remarkable efficacy of PD-1/PD-L1 and CTLA4 immune checkpoint inhibitors has led to numerous approvals in melanoma, non-small cell lung cancer, kidney cancer and several other cancers. Nevertheless, a response is observed in a variable proportion of patients, emphasizing the need for predictive biomarkers of efficacy of immune checkpoint inhibitors effectiveness. Several predictive biomarkers of efficacy are of interest: companion tests such PD-L1 immunohistochemistry, the mutational load, the immune status of the tumor and its molecular profile...
February 2017: Annales de Pathologie
https://www.readbyqxmd.com/read/28070678/trna-misacylation-with-methionine-in-the-mouse-gut-microbiome-in-situ
#6
Michael H Schwartz, Tao Pan
Global protein mistranslation with methionine has been shown to be a conserved biological process that affords distinct functional advantages in all three domains of life. In all instances, methionine mistranslation occurs through a regulated process where low-fidelity forms of methionyl-tRNA synthetase are conditionally induced to mischarge non-methionyl-tRNAs with methionine followed by the utilization of the misacylated tRNAs in translation. In mammals, methionine mistranslation contributes to oxidative stress response; in the hyperthermophilic archaeon Aeropyrum pernix, methionine mistranslation produces proteins that are better adapted to low temperature growth; in E...
January 9, 2017: Microbial Ecology
https://www.readbyqxmd.com/read/28039159/gut-microbiota-differs-between-children-with-inflammatory-bowel-disease-and-healthy-siblings-in-taxonomic-and-functional-composition-a-metagenomic-analysis
#7
Rebecca L Knoll, Kristoffer Forslund, Jens Roat Kultima, Claudius U Meyer, Ulrike Kullmer, Shinichi Sunagawa, Peer Bork, Stephan Gehring
Current treatment for pediatric inflammatory bowel disease (IBD) patients is often ineffective, with serious side effects. Manipulating the gut microbiota via fecal microbiota transplantation (FMT) is an emerging treatment approach but remains controversial. We aimed to assess the composition of the fecal microbiome through a comparison of pediatric IBD patients to their healthy siblings, evaluating risks and prospects for FMT in this setting. A case-control (sibling) study was conducted analyzing fecal samples of six children with Crohn's disease (CD), six children with ulcerative colitis (UC) and 12 healthy siblings by metagenomic sequencing...
April 1, 2017: American Journal of Physiology. Gastrointestinal and Liver Physiology
https://www.readbyqxmd.com/read/28008842/-microbiota-and-representations-of-the-human-body
#8
Betty Dodet
Although the presence of an intestinal flora has been known for a long time, the discovery of the role of gut microbiota in human health and disease has been widely recognized as one of the most important advances in the recent years. Chronic diseases may result from dysbiosis, i.e. a disruption of the balance within the bacterial population hosted by the human body. These developments open new prospects in terms of prevention and treatment, including the design of adapted diets, the development of functional foods and fecal transplantation...
November 2016: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28008835/-microbiotes-and-metabolic-diseases-the-bases-for-therapeutic-strategies
#9
Rémy Burcelin, Simon Nicolas, Vincent Blasco-Baque
After more than one and a half century, i.e. since Louis Pasteur work on microbes, fermentation, and diseases, biological science has made a giant step in bacteria knowledge. Thanks to an ultra-powerful "microscope", i.e. ultra-fast DNA sequencing, scientists have been able to read and group within a catalog over the last decade, the gene code of bacteria, i.e. the metagenome at the surface of our epithelia. More recently, live bacteria within adipose tissue, defining a tissue microbiota, as well as bacterial fragments such as DNA within the liver, the brain and the blood have been identified...
November 2016: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/28008833/-microbiotes-and-metagenomics
#10
Jean Weissenbach, Abdelghani Sghir
Major technical advances were introduced in the study of microflora and microbial communities in the nineties. These are essentially analytical approaches conducted as frequently by brute force. What conclusions can be drawn from these analyses twenty years later? In terms of microbial compositions, monitoring and diagnosis, the results are impressive. But what do all these microorganisms do? What are the factors behind their associations and their maintenance? Gene inventories are approaching completion; they allow us to deepen some physiological processes but do not say much more...
November 2016: Médecine Sciences: M/S
https://www.readbyqxmd.com/read/27992199/contribution-of-shape-and-charge-to-the-inhibition-of-a-family-gh99-endo-%C3%AE-1-2-mannanase
#11
Marija Petricevic, Lukasz F Sobala, Pearl Z Fernandes, Lluís Raich, Andrew J Thompson, Ganeko Bernardo-Seisdedos, Oscar Millet, Sha Zhu, Matthieu Sollogoub, Jesús Jiménez-Barbero, Carme Rovira, Gideon J Davies, Spencer J Williams
Inhibitor design incorporating features of the reaction coordinate and transition-state structure has emerged as a powerful approach for the development of enzyme inhibitors. Such inhibitors find use as mechanistic probes, chemical biology tools, and therapeutics. Endo-α-1,2-mannosidases and endo-α-1,2-mannanases, members of glycoside hydrolase family 99 (GH99), are interesting targets for inhibitor development as they play key roles in N-glycan maturation and microbiotal yeast mannan degradation, respectively...
January 25, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/27861126/gut-microbiota-influences-pathological-angiogenesis-in-obesity-driven-choroidal-neovascularization
#12
Elisabeth Mma Andriessen, Ariel M Wilson, Gaelle Mawambo, Agnieszka Dejda, Khalil Miloudi, Florian Sennlaub, Przemyslaw Sapieha
Age-related macular degeneration in its neovascular form (NV AMD) is the leading cause of vision loss among adults above the age of 60. Epidemiological data suggest that in men, overall abdominal obesity is the second most important environmental risk factor after smoking for progression to late-stage NV AMD To date, the mechanisms that underscore this observation remain ill-defined. Given the impact of high-fat diets on gut microbiota, we investigated whether commensal microbes influence the evolution of AMD Using mouse models of NV AMD, microbiotal transplants, and other paradigms that modify the gut microbiome, we uncoupled weight gain from confounding factors and demonstrate that high-fat diets exacerbate choroidal neovascularization (CNV) by altering gut microbiota...
2016: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/27847189/drought-effect-on-biocrust-resilience-high-speed-winds-result-in-crust-burial-and-crust-rupture-and-flaking
#13
Giora J Kidron, Wang Ying, Abraham Starinsky, Moshe Herzberg
Once established, biocrusts (known also as biological soil crusts or microbiotic crusts) are thought to be relatively resilient to wind erosion, with crust burial being considered as the main mechanism responsible for crust death. Thus far, to the best of our knowledge, crust flaking and rupture under natural conditions were not reported. We report herein a two-year study during two severe drought years (2010-2012) in a dunefield in the Negev Desert during which in addition to crust burial, crust rupture and flaking also took place...
February 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27766113/triple-diagnostics-for-early-detection-of-ambivalent-necrotizing-fasciitis
#14
Falco Hietbrink, Lonneke G Bode, Louis Riddez, Luke P H Leenen, Marijke R van Dijk
BACKGROUND: Necrotizing fasciitis is an uncommon, rapidly progressive and potential lethal condition. Over the last decade time to surgery decreased and outcome improved, most likely due to increased awareness and more timely referral. Early recognition is key to improve mortality and morbidity. However, early referral frequently makes it a challenge to recognize this heterogeneous disease in its initial stages. Signs and symptoms might be misleading or absent, while the most prominent skin marks might be in discrepancy with the position of the fascial necrosis...
2016: World Journal of Emergency Surgery: WJES
https://www.readbyqxmd.com/read/27662586/limited-prolonged-effects-of-rifaximin-treatment-on-irritable-bowel-syndrome-related-differences-in-the-fecal-microbiome-and-metabolome
#15
Natalia Zeber-Lubecka, Maria Kulecka, Filip Ambrozkiewicz, Agnieszka Paziewska, Krzysztof Goryca, Jakub Karczmarski, Tymon Rubel, Wojciech Wojtowicz, Piotr Mlynarz, Lukasz Marczak, Roman Tomecki, Michal Mikula, Jerzy Ostrowski
Irritable bowel syndrome (IBS) is a chronic functional disorder and its development may be linked, directly and indirectly, to intestinal dysbiosis. Here we investigated the interactions between IBS symptoms and the gut microbiome, including the relation to rifaximin (1200 mg daily; 11.2 g per a treatment). We recruited 72 patients, including 31 with IBS-D (diarrhea), 11 with IBS-C (constipation), and 30 with IBS-M (mixed constipation and diarrhea) and 30 healthy controls (HCs). Of them, 68%, 64%, and 53% patients with IBS-D, IBS-C, and IBS-M, respectively, achieved 10-12 week-term improvement after the rifaximin treatment...
September 2, 2016: Gut Microbes
https://www.readbyqxmd.com/read/27550859/prosteatotic-and-protective-components-in-a-unique-model-of-fatty-liver-gut-microbiota-and-suppressed-complement-system
#16
Long Liu, Xing Zhao, Qian Wang, Xiaoxian Sun, Lili Xia, Qianqian Wang, Biao Yang, Yihui Zhang, Sean Montgomery, He Meng, Tuoyu Geng, Daoqing Gong
Goose can develop severe hepatic steatosis without overt injury, thus it may serve as a unique model for uncovering how steatosis-related injury is prevented. To identify the markedly prosteatotic and protective mechanisms, we performed an integrated analysis of liver transcriptomes and gut microbial metagenomes using samples collected from overfed and normally-fed geese at different time points. The results indicated that the fatty liver transcriptome, initially featuring a 'metabolism' pathway, was later joined by 'cell growth and death' and 'immune diseases' pathways...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27484819/eutrophication-ammonia-intoxication-and-infectious-diseases-interdisciplinary-factors-of-mass-mortalities-in-cultured-nile-tilapia
#17
Nermeen M Abu-Elala, Reham M Abd-Elsalam, Sherif Marouf, Mohamed Abdelaziz, Mohamed Moustafa
The present study was designed to assess the possible causes of the mass mortalities of Nile Tilapia Oreochromis niloticus at El-Behera Governorate, Egypt, in relationship to environmental and microbiotic factors. Water samples were collected from fish farms at different locations and from Lake Edku to analyze water temperature, water pH, salinity, biological oxygen demand, dissolved oxygen, total ammonia nitrogen, and un-ionized ammonia. A number of moribund and freshly dead fish were sampled and submitted to our laboratory for microbiological, molecular, and histopathological examination...
September 2016: Journal of Aquatic Animal Health
https://www.readbyqxmd.com/read/27451445/death-becomes-them-bacterial-community-dynamics-and-stilbene-antibiotic-production-in-cadavers-of-galleria-mellonella-killed-by-heterorhabditis-and-photorhabdus-spp
#18
Amanda C Wollenberg, Tanush Jagdish, Greg Slough, Megan E Hoinville, Michael S Wollenberg
UNLABELLED: Insect larvae killed by entomopathogenic nematodes are thought to contain bacterial communities dominated by a single bacterial genus, that of the nematode's bacterial symbiont. In this study, we used next-generation sequencing to profile bacterial community dynamics in greater wax moth (Galleria mellonella) larvae cadavers killed by Heterorhabditis nematodes and their Photorhabdus symbionts. We found that, although Photorhabdus strains did initially displace an Enterococcus-dominated community present in uninfected G...
October 1, 2016: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/27328751/a-partial-metabolic-pathway-enables-group-b-streptococcus-to-overcome-quinone-deficiency-in-a-host-bacterial-community
#19
Thierry Franza, Emilie Delavenne, Aurélie Derré-Bobillot, Vincent Juillard, Mylène Boulay, Emmanuelle Demey, Joelle Vinh, Gilles Lamberet, Philippe Gaudu
Aerobic respiration metabolism in Group B Streptococcus (GBS) is activated by exogenous heme and menaquinone. This capacity enhances resistance of GBS to acid and oxidative stress and improves its survival. In this work, we discovered that GBS is able to respire in the presence of heme and 1,4-dihydroxy-2-naphthoic acid (DHNA). DHNA is a biosynthetic precursor of demethylmenaquinone (DMK) in many bacterial species. A GBS gene (gbs1789) encodes a homolog of the MenA 1,4-dihydroxy-2-naphthoate prenyltransferase enzyme, involved in the synthesis of demethylmenaquinone...
October 2016: Molecular Microbiology
https://www.readbyqxmd.com/read/27315076/fecal-microbiota-transplantation-via-fluoroscopy-guided-nasojejunal-catheter-placement-indications-technique-and-the-role-of-radiology
#20
Julien S Wonderlick, Robert D'Agostino
Clostridium difficile is a well-established cause of nosocomial gastrointestinal disease. Although antibiotics remain an effective first-line treatment for C. difficile colitis (CDC), relapse and recurrence are common. FMT has emerged as one of the safest and most effective known therapies available for recurrent or refractory CDC, which is likely due to restoration of the protective microbiotic barrier of the gastrointestinal tract. FMT varies greatly across institutions by route of delivery, dose, and protocol...
October 2016: Abdominal Radiology
keyword
keyword
12497
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"