Summary: Researchers have developed a probiotic ‘cocktail’ from gut bacteria found in infant feces. They say the ‘cocktail’ could help to increase the body’s ability to produce short chain fatty acids. The probiotic could be used to help those suffering from cancers, autoimmune disorders, obesity, diabetes and other disorders which limit the ability of the body to produce SCFAs naturally.
Source: Wake Forest Baptist Medical Center.
Probiotics seem to be everywhere these days – in yogurt, pickles, bread, even dog food. But there’s one place that may surprise you: There are probiotics in dirty diapers.
Yes, that’s right – baby poop.
Scientists at Wake Forest School of Medicine have developed a probiotic “cocktail” derived from gut bacteria strains found in infant feces that may help increase the body’s ability to produce short-chain fatty acids (SCFAs).
Why is that important?
“Short-chain fatty acids are a key component of good gut health,” said the study’s lead investigator, Hariom Yadav, Ph.D., assistant professor of molecular medicine at Wake Forest School of Medicine. “People with diabetes, obesity, autoimmune disorders and cancers frequently have fewer short-chain fatty acids. Increasing them may be helpful in maintaining or even restoring a normal gut environment, and hopefully, improving health.”
The study findings are reported in the Aug. 23 online edition of Scientific Reports, a Nature publication.
Over the past decade, research has shown that specific probiotic strains can effectively prevent or treat certain diseases in both animal models and humans. These reports have led to an extensive demand for probiotic supplements over the last decade, thereby prompting a massive increase in the development of new probiotic products for the consumer market.
However, these studies have primarily been conducted in animal models or human subjects with underlying diseases or conditions, Yadav said. Scientific reports on the effects of probiotics in healthy, disease-free subjects have remained relatively limited and inconsistent.
The School of Medicine team designed the study to examine the effects of probiotic strains derived from healthy human fecal samples and to determine how they worked.
“Babies are usually pretty healthy and clearly do not suffer from age-related diseases, such as diabetes and cancer,” Yadav said. “And, of course, their poop is readily available.”
In the study, Yadav’s team collected fecal samples from the diapers of 34 healthy infants. After following a robust protocol of isolation, characterization and safety validation of infant gut-origin Lactobacillus and Enterococcus strains with probiotic attributes, the researchers selected the 10 best out of the 321 analyzed.
To test the ability of these human-origin probiotics to change the gut microbiome – bacteria that live inside the digestive track – and their capacity to produce SCFAs, mice were given a single dose, as well as five consecutive doses of this 10-strain probiotic cocktail. Then the researchers injected the same probiotic mixture in the same doses into a human feces medium.
The scientists found that the single- and five-dose feeding of these selected probiotics modulated the gut microbiome and enhanced the production of SCFAs in mouse gut and human feces.
“This work provides evidence that these human-origin probiotics could be exploited as biotherapeutic regimens for human diseases associated with gut microbiome imbalance and decreased SCFA production in the gut,” Yadav said. “Our data should be useful for future studies aimed at investigating the influence of probiotics on human microbiome, metabolism and associated diseases.”
The study was limited in that it didn’t test the probiotic mixture in any disease models.
Funding: Funding for the study was provided by the Center for Diabetes, Obesity and Metabolism; the Kermit Glenn Phillips II Chair in Cardiovascular Medicine; the National Institutes of Health funded Claude D. Pepper Older Americans Center P30AG12232, R01AG18915, R01DK114224, the Clinical and Translational Science Center UL1TR001420 at Wake Forest School of Medicine; and the Department of Defense PR170446.
Co-authors are Ravinder Nagpal, Ph.D., Shaohua Wang, Ph.D., Shokouh Ahmadi, Ph.D. candidate, Joshua Hayes, Ph.D. candidate, Sarhurunathan Subashchandrabose, Ph.D., Dalane W. Kitzman, M.D., and Thomas Becton, B.A., of Wake Forest School of Medicine; and Jason Gagliano, Ph.D. candidate, and Russel Read, Ph.D., of the National Center for Biotechnology Workforce at Forsyth Technical Community College.
Source: Marguerite Beck – Wake Forest Baptist Medical Center
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Original Research: Open access research for “Human-origin probiotic cocktail increases short-chain fatty acid production via modulation of mice and human gut microbiome by Ravinder Nagpal, Shaohua Wang, Shokouh Ahmadi, Joshua Hayes, Jason Gagliano, Sargurunathan Subashchandrabose, Dalane W. Kitzman, Thomas Becton, Russel Read & Hariom Yadav in Scientific Reports. Published August 23 2018.
Human-origin probiotic cocktail increases short-chain fatty acid production via modulation of mice and human gut microbiome
The gut bacteria producing metabolites like short-chain fatty acids (SCFAs; e.g., acetate, propionate and butyrate), are frequently reduced in Patients with diabetes, obesity, autoimmune disorders, and cancers. Hence, microbiome modulators such as probiotics may be helpful in maintaining or even restoring normal gut microbiome composition to benefit host health. Herein, we developed a human-origin probiotic cocktail with the ability to modulate gut microbiota to increase native SCFA production. Following a robust protocol of isolation, characterization and safety validation of infant gut-origin Lactobacillus and Enterococcus strains with probiotic attributes (tolerance to simulated gastric and intestinal conditions, adherence to intestinal epithelial cells, absence of potential virulence genes, cell-surface hydrophobicity, and susceptibility to common antibiotics), we select 10 strains (5 from each genera) out of total 321 isolates. A single dose (oral gavage) as well as 5 consecutive doses of this 10-strain probiotic cocktail in mice modulates gut microbiome and increases SCFA production (particularly propionate and butyrate). Inoculation of these probiotics in human feces also increases SCFA production along with microbiome modulation. Results indicate that human-origin probiotic lactobacilli and enterococci could ameliorate gut microbiome dysbiosis and hence may prove to be a potential therapy for diseases involving reduced SCFAs production in the gut.