Biome

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Background Type II diabetes is a chronic health condition which is associated with skin conditions including chronic foot ulcers and an increased incidence of skin infections. The skin microbiome is thought to play important roles in skin defence and immune functioning. Diabetes affects the skin environment, and this may perturb skin microbiome with possible implications for skin infections and wound healing. This study examines the skin and wound microbiome in type II diabetes. Methods Eight type II diabetic subjects with chronic foot ulcers were followed over a time course of 10 weeks, sampling from both foot skin (swabs) and wounds (swabs and debrided tissue) every two weeks. A control group of eight control subjects was also followed over 10 weeks, and skin swabs collected from the foot skin every two weeks. Samples were processed for DNA and subject to 16S rRNA gene PCR and sequencing of the V4 region. Results The diabetic skin microbiome was significantly less diverse than control skin. Community composition was also significantly different between diabetic and control skin, however the most abundant taxa were similar between groups, with differences driven by very low abundant members of the skin communities. Chronic wounds tended to be dominated by the most abundant skin Staphylococcus, while other abundant wound taxa differed by patient. No significant correlations were found between wound duration or healing status and the abundance of any particular taxa. Discussion The major difference observed in this study of the skin microbiome associated with diabetes was a significant reduction in diversity. The long-term effects of reduced diversity are not yet well understood, but are often associated with disease conditions.

Researchers have made the first direct demonstration that fecal donor microbes remained in recipients for months or years after a transplant to treat the diarrhea and colitis caused by recurrent Clostridium difficile infections -- a serious and stubborn cause of diarrhea after an antibiotic treatment for some other illness.

Background Urbanization is associated with an increased risk for a number of diseases, including obesity, diabetes, and cancer, which all also show associations with the microbiome. While microbial community composition has been shown to vary across continents and in traditional versus Westernized societies, few studies have examined urban-rural differences in neighboring communities within a single country undergoing rapid urbanization. In this study, we compared the gut microbiome, plasma metabolome, dietary habits, and health biomarkers of rural and urban people from a single Chinese province. Results We identified significant differences in the microbiota and microbiota-related plasma metabolites in rural versus recently urban subjects from the Hunan province of China. Microbes with higher relative abundance in Chinese urban samples have been associated with disease in other studies and were substantially more prevalent in the Human Microbiome Project cohort of American subjects. Furthermore, using whole metagenome sequencing, we found that urbanization was associated with a loss of microbial diversity and changes in the relative abundances of Viruses, Archaea, and Bacteria. Gene diversity, however, increased with urbanization, along with the proportion of reads associated with antibiotic resistance and virulence, which were strongly correlated with the presence of Escherichia and Shigella. Conclusions Our data suggest that urbanization has produced convergent evolution of the gut microbial composition in American and urban Chinese populations, resulting in similar compositional patterns of abundant microbes through similar lifestyles on different continents, including a loss of potentially beneficial bacteria and an increase in potentially harmful genes via increased relative abundance of Escherichia and Shigella.

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Healthy digestion within a resilient, repair-enabled microbiome is essential for 21st century survival. The human microbiome will be explained in functional and practical terms. Issues such as leaky gut, SIBO and IBS will be explored.Those who are proactive about their health, particularly about what they eat and drink, think and do can achieve a healthy microbiome. Eating and drinking what can be digested, assimilated and eliminated without immune burden provides a context for this presentation.

Fiber isn’t the only thing our good gut bacteria can eat; starch can also act as a prebiotic. Subscribe to NutritionFacts.org’s free newsletter to receive our B12 infographic that covers the latest research takeaways and Dr. Greger’s updated recommendations: https://nutritionfacts.org/subscribe/ This is a follow-up to my video Is the Fiber Theory Wrong?(http://nutritionfacts.org/video/is-the-fiber-theory-wrong) What is this butyrate stuff of which I speak? See: • Bowel Wars: Hydrogen Sulfide vs. Butyrate (http://nutritionfacts.org/video/bowel-wars-hydrogen-sulfide-vs-butyrate/) • Prebiotics: Tending Our Inner Garden (http://nutritionfacts.org/video/prebiotics-tending-our-inner-garden) • Treating Ulcerative Colitis with Diet (http://nutritionfacts.org/video/treating-ulcerative-colitis-with-diet) For videos on optimizing your gut flora, see: • Microbiome: The Inside Story (http://nutritionfacts.org/video/microbiome-the-inside-story) • What’s Your Gut Microbiome Enterotype?http://nutritionfacts.org/video/whats-your-gut-microbiome-enterotype • How to Change Your Enterotype (http://nutritionfacts.org/video/how-to-change-your-enterotype/) More on preventing colon cancer in: • Starving Cancer with Methionine Restriction (http://nutritionfacts.org/video/starving-cancer-with-methionine-restriction/) • Stool pH and Colon Cancer (http://nutritionfacts.org/video/stool-ph-and-colon-cancer/) • Solving a Colon Cancer Mystery (http://nutritionfacts.org/video/solving-a-colon-cancer-mystery/) If you’re eating healthy do you need a colonoscopy? Find out in Should We All Get Colonoscopies Starting at Age 50? (http://nutritionfacts.org/video/should-we-all-get-colonoscopies-starting-at-age-50). When regular starches are cooked and then cooled, some of the starch recrystallizes into resistant starch. For this reason, pasta salad can be healthier than hot pasta and potato salad healthier than a baked potato. Find out more in my next video Getting Starch to Take the Path of Most Resistance (http://nutritionfacts.org/video/Getting-starch-to-take-the-path-of-most-resistance). Have a question about this video? Leave it in the comment section at http://nutritionfacts.org/video/resistant-starch-and-colon-cancer/ and someone on the NutritionFacts.org team will try to answer it. Want to get a list of links to all the scientific sources used in this video? Click on Sources Cited at http://nutritionfacts.org/video/resistant-starch-and-colon-cancer/. You’ll also find a transcript of the video, my blog and speaking tour schedule, and an easy way to search (by translated language even) through our videos spanning more than 2,000 health topics. If you’d rather watch these videos on YouTube, subscribe to my YouTube Channel here: https://www.youtube.com/subscription_center?add_user=nutritionfactsorg Thanks for watching. I hope you’ll join in the evidence-based nutrition revolution! -Michael Greger, MD FACLM Image Credit: Ed Uthman via flickr. https://NutritionFacts.org • Subscribe: https://nutritionfacts.org/subscribe • Donate: https://nutritionfacts.org/donate • Podcast : https://nutritionfacts.org/audio • Facebook: www.facebook.com/NutritionFacts.org • Twitter: www.twitter.com/nutrition_facts • Instagram: www.instagram.com/nutrition_facts_org • Books (including the NEW How Not to Diet Cookbook): https://nutritionfacts.org/books • Shop: https://drgreger.org #coloncancer #hownottodie #drgreger

(2016). Resistant starch reduces colonic and urinary p-cresol in rats fed a tyrosine-supplemented diet, whereas konjac mannan does not. Bioscience, Biotechnology, and Biochemistry: Vol. 80, No. 10, pp. 1995-2000.

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What effect do artificial sweeteners such as sucralose (Splenda), saccharin (Sweet & Low), aspartame (Nutrasweet) and acesulfame K (Sweet One) have on our gut bacteria? Subscribe to NutritionFacts.org’s free newsletter to receive our B12 infographic that covers the latest research takeaways and Dr. Greger’s updated recommendations: https://nutritionfacts.org/subscribe/ Can’t get enough of artificial sweeteners? Check out • Diet Soda and Preterm Birth (http://nutritionfacts.org/video/diet-soda-and-preterm-birth/) • Aspartame Induced Fibromyalgia (http://nutritionfacts.org/video/aspartame-induced-fibromyalgia/) • Aspartame and the Brain (http://nutritionfacts.org/video/Aspartame-and-the-Brain) Even for nontoxic low calorie sweeteners like erythritol (Erythritol May Be a Sweet Antioxidant http://nutritionfacts.org/video/erythritol-may-be-a-sweet-antioxidant/), there are some caveats. See: • How Diet Soda Can Make Us Gain Weight (http://nutritionfacts.org/video/how-diet-soda-could-make-us-gain-weight/) • Neurobiology of Artificial Sweeteners (http://nutritionfacts.org/video/neurobiology-of-artificial-sweeteners/) • Unsweetening the Diet (http://nutritionfacts.org/video/unsweetening-the-diet/) Who cares if our gut flora gets disrupted? Wait until you see how important the little puppies are: • Microbiome: The Inside Story (http://nutritionfacts.org/video/microbiome-the-inside-story) • Prebiotics: Tending Our Inner Garden (http://nutritionfacts.org/video/prebiotics-tending-our-inner-garden) • What’s Your Gut Microbiome Enterotype? (http://nutritionfacts.org/video/whats-your-gut-microbiome-enterotype) • How to Change Your Enterotype (http://nutritionfacts.org/video/how-to-change-your-enterotype) • Paleopoo: What We Can Learn from Fossilized Feces (http://nutritionfacts.org/video/paleopoo-what-we-can-learn-from-fossilized-feces) Have a question for Dr. Greger about this video? Leave it in the comment section at http://nutritionfacts.org/video/effect-of-sucralose-splenda-on-the-microbiome and he'll try to answer it! Image Credit: Dave Crosby via Flickr. https://NutritionFacts.org • Subscribe: https://nutritionfacts.org/subscribe • Donate: https://nutritionfacts.org/donate • Podcast : https://nutritionfacts.org/audio • Facebook: www.facebook.com/NutritionFacts.org • Twitter: www.twitter.com/nutrition_facts • Instagram: www.instagram.com/nutrition_facts_org • Books (including the NEW How Not to Diet Cookbook): https://nutritionfacts.org/books • Shop: https://drgreger.org

Background Mortality from chronic liver disease is rising exponentially. The liver is intimately linked to the gut via the portal vein, and exposure to gut microbiota and their metabolites transloca...

The human intestinal microbiome is thought to influence tumor development and progression in the gastrointestinal tract by various mechanisms. Therefore, by better understanding the microbiome in eso...

OMICS: A Journal of Integrative Biology

Reported values in the literature on the number of cells in the body differ by orders of magnitude and are very seldom supported by any measurements or calculations. Here, we integrate the most up-to-date information on the number of human and bacterial ...

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Abstract. Multiple environmental factors induce dysbiosis in the gut microbiome and cause a variety of human diseases. Previously, we have first demonstrated th

The incidence of diabetes mellitus is rapidly increasing throughout the world. Although the exact cause of the disease is not fully clear, perhaps, genetics, ethnic origin, obesity, age, and lifestyle are considered as few of many contributory factors for the disease pathogenesis. In recent years, the disease progression is particularly linked with functional and taxonomic alterations in the gastrointestinal tract microbiome. A change in microbial diversity, referred as microbial dysbiosis, alters the gut fermentation profile and intestinal wall integrity and causes metabolic endotoxemia, low-grade inflammation, autoimmunity, and other affiliated metabolic disorders. This article aims to summarize the role of the gut microbiome in the pathogenesis of diabetes. Additionally, we summarize gut microbial dysbiosis in preclinical and clinical diabetes cases reported in literature in the recent years.

Chinese Medical Journal, a publication of Chinese Medical Association, is a peer-reviewed online journal with semi-monthly print on demand compilation of issues published. The journal's full text is available online at http://www.cmj.org. The journal allows free access (Open Access) to its contents and permits authors to self-archive final accepted version of the articles on any OAI-compliant institutional / subject-based repository.

Could Monsanto's glyphosate-based herbicide Roundup be leading to the overgrowth of deadly bacteria in animals and humans consuming genetically-modified food contaminated with it?

Scientists show how a specific strain of microbes helps control glucose homeostasis in mice. In the future, this could mean more targeted and powerful probiotics in humans.

The nutraceutical properties of Aloe vera have been attributed to a glucomannan known as acemannan. Recently information has been published about the presence of fructans in Aloe vera but there are no publications about acemannan and fructans as prebiotic compounds. This study investigated in vitro the prebiotic properties of these polysaccharides. Our results demonstrated that fructans from Aloe vera induced bacterial growth better than inulin (commercial FOS). Acemannan stimulated bacterial growth less than fructans, and as much as commercial FOS. Using qPCR to study the bacterial population of human feces fermented in a bioreactor simulating colon conditions, we found that fructans induce an increase in the population of Bifidobacterium spp. Fructans produced greater amounts of short chain fatty acids (SCFA), while the branched-chain fatty acids (BCFA) did not increase with these polysaccharides. Acemannan increased significantly acetate concentrations. Therefore, both Aloe vera polysaccharides have prebiotic potentials.

How can we lower our risk of dementia, dissolve brain fog, and maximize our mental capacity?

The report describes two individuals who suffered from significant hair loss related to alopecia who were treated for a gastrointestinal disorder, C. Diff.

A researcher ends the debate among physicians regarding sepsis management.

UCLA researchers gained insight into the connections among childhood trauma, brain development and the composition of the gut microbiome.

Now the more interesting question: if one begins a new exercise regimen, would s/he see a change, or improvement, in the diversity of bacteria in the gut.