Positive enhancement of Lactobacillus fermentum HY01 on intestinal movements of mice having constipation

Abstract

Lactobacilli have been used to treat many gastrointestinal disorders. But the outcome of Lactobacilli are strain specific. The strain Lactobacillus Fermentum, HY01, (LF-HY01) has a good performance in the environment of gastrointestinal tract. In this study, the aim is to investigate the preventive effects of LF-HY01 against activated-carbon-induced constipation in mice. Mice are randomized into four groups. Normal group was fed a normal diet, model group also has the same with activated carbon treatment, and low and high concentration groups are treated with LF-HY01. We have determined many indexes such as body weight, water content in faeces, defecation conditions, the level of small intestinal villi damages and levels of various neurotransmitters in serum, including motilin (MTL), gastrin (GT), endothelin (ET), somatostatin (SST), acetylcholinesterase (AchE), substance P (SP), and vasoactive intestinal peptide (VIP). LF-HY01 has no significant difference in each group, but it can significantly improve water content of faeces, defecation time of first black stool and activated carbon propelling rate in small intestine as compared of model group. Furthermore, LF-HY01 can effectively prevent small intestinal villi damages, which is less than that of model group. Moreover, LF-HY01 has the consistency to increase the levels of MTL, GT, ET, AchE, SP and VIP, and LF-HY01 can also have the ability to reduce the level of SST. These results suggest that Lactobacillus Fermentum, HY01, has a great impact in enhancing intestinal peristalsis ability and has the ability to prevent from activated-carbon-induced constipation in mice.