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Probiotics microbiome

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https://www.readbyqxmd.com/read/29453253/assembly-of-synthetic-functional-cellulosomal-structures-onto-the-lactobacillus-plantarum-cell-surface-a-potent-member-of-the-gut-microbiome
#1
Johanna Stern, Sarah Moraïs, Yonit Ben-David, Rachel Salama, Melina Shamshoum, Raphael Lamed, Yuval Shoham, Edward A Bayer, Itzhak Mizrahi
Heterologous display of enzymes on microbial cell surfaces is an extremely desirable approach, since it enables the engineered microbe to interact directly with the plant-wall extracellular polysaccharide matrix. In recent years, attempts have been made to endow non-cellulolytic microbes with genetically engineered cellulolytic capabilities for improved hydrolysis of lignocellulosic biomass and for advanced probiotics. Thus far, however, owing to the hurdles of secreting and assembling large, intricate complexes on the bacterial cell wall, only free cellulases or relatively simple cellulosome assemblies have been introduced into live bacteria...
February 16, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29447695/cervicovaginal-microbiota-and-reproductive-health-the-virtue-of-simplicity
#2
REVIEW
Melis N Anahtar, David B Gootenberg, Caroline M Mitchell, Douglas S Kwon
Cervicovaginal microbiota play a critical role in women's health and reproductive outcomes. Despite being one of the simplest commensal bacterial communities in the human body, we are only beginning to appreciate its complex dynamic nature and important role in host immune modulation. In this review, we discuss the "optimal" cervicovaginal bacterial community composition, the impact of microbiota on gynecologic and obstetric outcomes, and the hurdles to developing a deeper mechanistic understanding of the function of the cervicovaginal microbiome...
February 14, 2018: Cell Host & Microbe
https://www.readbyqxmd.com/read/29432297/should-fecal-microbial-transplantation-be-used-in-the-icu
#3
Stephen A McClave, Jayshil Patel, Neal Bhutiani
PURPOSE OF REVIEW: Maintaining gut barrier defenses, modulating immune responses, and supporting the role of commensal microbiota are major factors influencing outcome in critical illness. Of these, maintaining a commensal 'lifestyle' and preventing the emergence of a virulent pathobiome may be most important in reducing risk of infection and multiple organ failure. RECENT FINDINGS: The polymeric formulas utilized for enteral nutrition in the ICU are absorbed high in the gastrointestinal tract and may not reach the microbial burden in the cecum where their effect is most needed...
February 9, 2018: Current Opinion in Critical Care
https://www.readbyqxmd.com/read/29425888/understanding-the-microbiome-emerging-biomarkers-for-exploiting-the-microbiota-for-personalized-medicine-against-cancer
#4
REVIEW
Meenakshi Rajpoot, Anil K Sharma, Anil Sharma, Girish Kumar Gupta
The human body is a home to more than 1 trillion microbes with a diverse variety of commensal microbes that play a crucial role towards the health of the individual. These microbes occupy different habitats such as gut, skin, vagina, oral etc. Not only the types and abundance of microbes are different in different organs, but also these may differ in different individuals. The genome of these microbiota and their ecosystem constitute to form a microbiome. Factors such as diet, environment, host genetics etc...
February 6, 2018: Seminars in Cancer Biology
https://www.readbyqxmd.com/read/29417446/linking-the-gut-microbiota-to-bone-health-in-anorexia-nervosa
#5
REVIEW
Nicole C Aurigemma, Kristen J Koltun, Hannah VanEvery, Connie J Rogers, Mary Jane De Souza
PURPOSE OF REVIEW: The purpose of this review is to examine the anorexia nervosa-microbiota-bone relationship, offering a compilation of the relevant human and animal studies that may contribute to a more comprehensive understanding of potential mechanisms involved. RECENT FINDINGS: Recent studies have implicated fermentation by-products of the gut microbiota in bone metabolism. Compromised bone health often accompanies anorexia nervosa due to energy deficiency and hypoestrogenism...
February 7, 2018: Current Osteoporosis Reports
https://www.readbyqxmd.com/read/29413010/nutritional-interventions-in-the-patient-with-inflammatory-bowel-disease
#6
REVIEW
Berkeley N Limketkai, Andrea Wolf, Alyssa M Parian
Nutritional strategies have been explored as primary or adjunct therapies for inflammatory bowel disease (IBD). Exclusive enteral nutrition is effective for the induction of remission in Crohn disease and is recommended as a first-line therapy for children. Dietary strategies focus on adjusting the ratio of consumed nutrients that are proinflammatory or antiinflammatory. Treatments with dietary supplements focus on the antiinflammatory effects of the individual supplements (eg, curcumin, omega-3 fatty acids, vitamin D) or their positive effects on the intestinal microbiome (eg, prebiotics, probiotics)...
March 2018: Gastroenterology Clinics of North America
https://www.readbyqxmd.com/read/29410981/diet-and-microbiota-linked-in-health-and-disease
#7
REVIEW
T Requena, M C Martínez-Cuesta, C Peláez
Diet has shaped microbiota profiles through human evolution. Traditional gut microbiomes are described to be driven by high levels of Prevotella. In the present, however, it is consistently described a lower microbial richness in urban industrialized populations compared with individuals living in rural settings, Bacteroides being predominant among urban-industrial gut microbiomes. Components of diet are highly influential in shaping the gut microbiota, being fiber, fat, proteins, polyphenols and micronutrients differentially metabolized by generalist and specialized microorganisms alone or through the phenomenon of cross-feeding...
February 7, 2018: Food & Function
https://www.readbyqxmd.com/read/29384067/interplay-of-gut-microbiota-probiotics-in-obesity-a-review
#8
Ramesh Pothuraju, Raj Kumar Sharma
Excess caloric intake and less energy expenditure (eg. physical inactivity) are associated with acquired metabolic disorders due to sedentary life style. Pharmacological treatments are less effective in preventing obesity. Type of diet influence the gut microbiome alteration and it is interrelated with obesity, insulin resistance and type 2 diabetes. Modified gut microbiota by the harmful bacterial components (eg: lipopolysaccharides) is linked with the metabolic endotoxemia (low-grade inflammation) which results in damage to the gut barrier function...
January 30, 2018: Endocrine, Metabolic & Immune Disorders Drug Targets
https://www.readbyqxmd.com/read/29383197/rethinking-the-bile-acid-gut-microbiome-axis-in-cancer
#9
REVIEW
John P Phelan, F Jerry Reen, Jose A Caparros-Martin, Rosemary O'Connor, Fergal O'Gara
Dietary factors, probiotic agents, aging and antibiotics/medicines impact on gut microbiome composition leading to disturbances in localised microbial populations. The impact can be profound and underlies a plethora of human disorders, including the focus of this review; cancer. Compromised microbiome populations can alter bile acid signalling and produce distinct pathophysiological bile acid profiles. These in turn have been associated with cancer development and progression. Exposure to high levels of bile acids, combined with localised molecular/genome instability leads to the acquisition of bile mediated neoplastic alterations, generating apoptotic resistant proliferation phenotypes...
December 29, 2017: Oncotarget
https://www.readbyqxmd.com/read/29379536/bifidobacteria-and-lactobacilli-in-the-gut-microbiome-of-children-with-non-alcoholic-fatty-liver-disease-which-strains-act-as-health-players
#10
Valerio Nobili, Lorenza Putignani, Antonella Mosca, Federica Del Chierico, Pamela Vernocchi, Anna Alisi, Laura Stronati, Salvatore Cucchiara, Marco Toscano, Lorenzo Drago
Introduction: Non-alcoholic fatty liver disease (NAFLD), considered the leading cause of chronic liver disease in children, can often progress from non-alcoholic fatty liver (NAFL) to non-alcoholic steatohepatitis (NASH). It is clear that obesity is one of the main risk factors involved in NAFLD pathogenesis, even if specific mechanisms have yet to be elucidated. We investigated the distribution of intestinal bifidobacteria and lactobacilli in the stools of four groups of children: obese, obese with NAFL, obese with NASH, and healthy, age-matched controls (CTRLs)...
January 2018: Archives of Medical Science: AMS
https://www.readbyqxmd.com/read/29377607/immunosuppressants-produced-by-streptomycetes-evolution-hygiene-hypothesis-tumor-rapalog-resistance-and-probiotics
#11
Alireza Bolourian, Zahra Mojtahedi
Resistance to a drug and the suppression of inflammatory disorders with immunosuppressive drugs might have happened upon exposure to natural compounds during evolution. Streptomycetes are soil bacteria, but they produce therapeutic drugs. They have been reported to be the low-abundant members of mucosal microbiomes with a higher prevalence in nonhumans ingesting soil compared to humans. Their lower abundance in the human microbiome might be the representations of our current hygienic lifestyle. We suggest that the Streptomyces bacteria producing antiproliferative/immunosuppressive compounds (e...
January 26, 2018: Environmental Microbiology Reports
https://www.readbyqxmd.com/read/29373532/the-role-of-bacteria-probiotics-and-diet-in-irritable-bowel-syndrome
#12
REVIEW
Ashton Harper, Malwina M Naghibi, Davinder Garcha
Irritable bowel syndrome is a highly prevalent gastrointestinal disorder that threatens the quality of life of millions and poses a substantial financial burden on healthcare systems around the world. Intense research into the human microbiome has led to fascinating discoveries which directly and indirectly implicate the diversity and function of this occult organ in irritable bowel syndrome (IBS) pathophysiology. The benefit of manipulating the gastrointestinal microbiota with diet and probiotics to improve symptoms has been demonstrated in a wealth of both animal and human studies...
January 26, 2018: Foods (Basel, Switzerland)
https://www.readbyqxmd.com/read/29355422/oral-microbiome-studies-potential-diagnostic-and-therapeutic-implications
#13
A Mira
Understanding the microbiology of dental caries is not a mere academic exercise; it provides the basis for preventive, diagnostic, and treatment strategies and gives the dentist a theoretical framework to become a better professional. The last years have seen the development of new research methodologies, ranging from high-throughput sequencing or "omics" techniques to new fluorescence microscopy applications and microfluidics, which have allowed the study of the oral microbiome to an unprecedented level of detail...
February 2018: Advances in Dental Research
https://www.readbyqxmd.com/read/29355410/in-sickness-and-in-health-what-does-the-oral-microbiome-mean-to-us-an-ecological-perspective
#14
P D Marsh
The oral microbiome is natural and has a symbiotic relationship with the host by delivering important benefits. In oral health, a dynamic balance is reached between the host, the environment, and the microbiome. However, the frequent intake of sugar and/or reductions in saliva flow results in extended periods of low pH in the biofilm, which disrupts this symbiotic relationship. Such conditions inhibit the growth of beneficial species and drive the selection of bacteria with an acid-producing/acid-tolerating phenotype, thereby increasing the risk of caries (dysbiosis)...
February 2018: Advances in Dental Research
https://www.readbyqxmd.com/read/29350290/the-microbiology-and-treatment-of-human-mastitis
#15
REVIEW
Angeliki Angelopoulou, Des Field, C Anthony Ryan, Catherine Stanton, Colin Hill, R Paul Ross
Mastitis, which is generally described as an inflammation of breast tissue, is a common and debilitating disease which frequently results in the cessation of exclusive breastfeeding and affects up to 33% of lactating women. The condition is a primary cause of decreased milk production and results in organoleptic and nutritional alterations in milk quality. Recent studies employing culture-independent techniques, including metagenomic sequencing, have revealed a loss of bacterial diversity in the microbiome of mastitic milk samples compared to healthy milk samples...
January 19, 2018: Medical Microbiology and Immunology
https://www.readbyqxmd.com/read/29348256/flavonoids-dairy-foods-and-cardiovascular-and-metabolic-health-a-review-of-emerging-biologic-pathways
#16
REVIEW
Dariush Mozaffarian, Jason H Y Wu
A growing body of nutritional science highlights the complex mechanisms and pleiotropic pathways of cardiometabolic effects of different foods. Among these, some of the most exciting advances are occurring in the area of flavonoids, bioactive phytochemicals found in plant foods; and in the area of dairy, including milk, yogurt, and cheese. Many of the relevant ingredients and mechanistic pathways are now being clarified, shedding new light on both the ingredients and the pathways for how diet influences health and well-being...
January 19, 2018: Circulation Research
https://www.readbyqxmd.com/read/29316320/human-microbiota-blood-group-antigens-and-disease
#17
REVIEW
D Rose Ewald, Susan C J Sumner
Far from being just "bugs in our guts," the microbiota interacts with the body in previously unimagined ways. Research into the genome and the microbiome has revealed that the human body and the microbiota have a long-established but only recently recognized symbiotic relationship; homeostatic balance between them regulates body function. That balance is fragile, easily disturbed, and plays a fundamental role in human health-our very survival depends on the healthy functioning of these microorganisms. Increasing rates of cardiovascular, autoimmune, and inflammatory diseases, as well as epidemics in obesity and diabetes in recent decades are believed to be explained, in part, by unintended effects on the microbiota from vaccinations, poor diets, environmental chemicals, indiscriminate antibiotic use, and "germophobia...
January 9, 2018: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/29314469/beneficial-changes-in-rumen-bacterial-community-profile-in-sheep-and-dairy-calves-as-a-result-of-feeding-the-probiotic-bacillus-amyloliquefaciens-h57
#18
Benjamin J Schofield, Nancy Lachner, Oanh T Le, David M McNeill, Peter Dart, Diane Ouwerkerk, Philip Hugenholtz, Athol V Klieve
AIMS: The probiotic Bacillus amyloliquefaciens H57 increased weight gain, increased nitrogen retention and increased feed intake in ruminants when administered to the diet. This study aims to develop a better understanding of this probiotic effect by analysing changes in the rumen prokaryotic community. METHODS AND RESULTS: Sequencing the 16S rRNA gene PCR amplicons of the rumen microbiome, revealed that ewes fed H57 had a significantly different rumen microbial community structure to Control sheep...
January 3, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29311119/the-role-of-the-gut-microbiome-in-systemic-inflammatory-disease
#19
REVIEW
Jose C Clemente, Julia Manasson, Jose U Scher
The role of the gut microbiome in models of inflammatory and autoimmune disease is now well characterized. Renewed interest in the human microbiome and its metabolites, as well as notable advances in host mucosal immunology, has opened multiple avenues of research to potentially modulate inflammatory responses. The complexity and interdependence of these diet-microbe-metabolite-host interactions are rapidly being unraveled. Importantly, most of the progress in the field comes from new knowledge about the functional properties of these microorganisms in physiology and their effect in mucosal immunity and distal inflammation...
January 8, 2018: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29277311/targeting-gut-microbiome-a-novel-and-potential-therapy-for-autism
#20
REVIEW
Yongshou Yang, Jinhu Tian, Bo Yang
Autism spectrum disorder (ASD) is a severely neurodevelopmental disorder that impairs a child's ability to communicate and interact with others. Children with neurodevelopmental disorder, including ASD, are regularly affected by gastrointestinal problems and dysbiosis of gut microbiota. On the other hand, humans live in a co-evolutionary association with plenty of microorganisms that resident on the exposed and internal surfaces of our bodies. The microbiome, refers to the collection of microbes and their genetic material, confers a variety of physiologic benefits to the host in many key aspects of life as well as being responsible for some diseases...
December 22, 2017: Life Sciences
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