Immunization with bacteria promotes stress resilience, coping behaviors in mice

Injections of the soil bacterium Mycobacterium vaccae (M. vaccae NCTC 11659) promote stress resilience and improve coping behaviors in mice, according to a new study. The researchers also found that M. vaccae prevented stress-induced colitis, a typical symptom of inflammatory bowel disease (IBD), suggesting that immunization with the bacteria may have a wide-ranging suite of health benefits. The immunized mice continued to show decreased levels of submissive behaviors one to two weeks after treatment. M. vaccae treatment reduced stress-induced colitis, as measured by cellular damage to the colon and infiltration of immune cells, by approximately 50 percent, as compared to untreated mice.
Source : www.sciencedaily.com      2016/5/24 08:58

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