Two stomach-originated Lactobacillus strains improve Helicobacter pylori infected murine gastritis.
OBJECTIVE
To investigate the potential anti-Helicobacter pylori (H. pylori) and anti-inflammation in vivo effects of two lactobacillus strains from human stomach.


METHODS
Forty H. pylori infected Balb/c mice were randomly divided into 4 groups: proton pump inhibitor and antibiotics triple treated group, Lactobacillus fermenti (L. fermenti) treated group, Lactobacillus acidophilus treated group and normal saline control group. Ten uninfected mice were also included as blank control group. The infection of H. pylori was detected by rapid urease tests, Giemsa staining and bacterial culture. The colonization of H. pylori was assessed in bacterial density score and gastric inflammation was assessed in histological score. The colonization of L. fermenti was performed by fluorescent probe.


RESULTS
Histopathologic evaluation showed significant release of mucosal inflammation in gastric antrum and gastric body in lactobacillus treated groups and triple treated group. H. pylori eradication rate in both lactobacillus treated groups and triple treated group were higher than normal saline control group. Lactobacillus treated groups and triple treated group showed significant decrease of H. pylori bacterial density.


CONCLUSIONS
Both lactobacillus strains have a significant anti-H. pylori activity; L. fermenti displays more efficient antagonistic activity in vivo against H. pylori infection.
Cui
Yi
Y
Department of Gastroenterology, The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China.
Wang
Chun-Lian
CL
Liu
Xiao-Wei
XW
Wang
Xue-Hong
XH
Chen
Lin-Lin
LL
Zhao
Xin
X
Fu
Nian
N
Lu
Fang-Gen
FG
D000818:Animals; D000898:Antibiosis; D005756:Gastritis / Q000382:microbiology / Q000473:pathology / Q000628:therapy*; D016481:Helicobacter Infections / Q000382:microbiology / Q000473:pathology / Q000628:therapy*; D016480:Helicobacter pylori; D006801:Humans; D007779:Lactobacillus acidophilus / Q000502:physiology*; D052197:Limosilactobacillus fermentum / Q000502:physiology*; D051379:Mice; D008807:Mice, Inbred BALB C; D011897:Random Allocation; D013270:Stomach / Q000382:microbiology / Q000473:pathology