Exciting new data presented at the International Liver Congress 2012 shows the gut microbiota’s causal role in the development of diabetes and non-alcoholic fatty liver disease (NAFLD), independent of obesity1. Though an early stage animal model, the French study highlights the possibility of preventing diabetes and NAFLD with gut microbiota transplantation — the engrafting of new microbiota, usually through administering fecal material from a healthy donor into the colon of a diseased recipient.2
In the 16 week study, two groups of germ free mice received gut microbiota transplants; one set from donor mice displaying symptoms of insulin resistance and liver steatosis (responders), the other from normal mice (non responders). The donor mice were selected due to their response to being fed a high fat diet.
The germ free group that received microbiota from symptomatic mice (responder receivers — RR) showed higher levels of fat concentration in the liver as well as being insulin resistant. The germ free group that received microbiota from healthy mice (non-responder-receivers — NRR) maintained normal glucose levels and sensitivity to insulin.
EASL Scientific Committee Member Dr Frank Lammert said: “The factors leading to Non-Alcoholic Fatty Liver Disease (NAFLD) are poorly understood, but it is known that NAFLD and Type 2 diabetes are characterized, respectively, by liver inflammation and metabolic disorders like insulin resistance.”
“This study shows that different microbiota cause different metabolic responses in animals. By implanting microbiota from healthy mice, the study authors prevented the development of liver inflammation and insulin resistance, both indications of liver disease and diabetes. Thus, gut microbiota transplants could have a therapeutic role in the development of these diseases.”
At present, the intestinal microbiota is considered to constitute a “microbial organ”: one that has pivotal roles in the body’s metabolism as well as immune function. Therefore transplantation aims to restore gut functionality and re-establish a certain state of intestinal flora.
- Le Roy T et al. Gut microbiota transplantation demonstrates its causal role in the development of type 2 diabetes and fatty liver. Abstract presented at the International Liver CongressTM 2012
- Khoruts A and Sadowsky MJ, Therapeutic transplantation of the distal gut microbiota. Mucosal Immunology 2011;4:4-7
Health-e-Solutions comment: The statement, “the intestinal microbiota is considered to constitute a “microbial organ”: one that has pivotal roles in the body’s metabolism as well as immune function” is an important message for all people with diabetes to hear – whether it is type one, type 2, LADA or MODY, we believe the gut is the place to begin reparations. This research supports this understanding.
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