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. 2009 Apr 21;15(15):1821-8.
doi: 10.3748/wjg.15.1821.

Therapeutic effects of Clostridium butyricum on experimental colitis induced by oxazolone in rats

Hai-Qiang Zhang  1 , Tomas T Ding, Jun-Sheng Zhao, Xin Yang, Hai-Xia Zhang, Juan-Juan Zhang, Yun-Long Cui
Affiliations

Therapeutic effects of Clostridium butyricum on experimental colitis induced by oxazolone in rats

Hai-Qiang Zhang et al. World J Gastroenterol. .

Abstract

Aim: To evaluate the therapeutic effects of a probiotic supplement (Clostridium butyricum, CGMCC0313) in a chemically-induced rat model of experimental colitis.

Methods: An experimental ulcerative colitis model was established by rectal injection of oxazolone into the colon of 40 Wistar rats randomly divided into four groups. The positive control group was sacrificed 3 d after colitis onset. The remaining groups were fed daily with either 2 mL of C. butyricum (2.3 x 10(11) CFU/L), 2 mL of mesalamine (100 g/L), or 1 mL of sodium butyrate (50 mmol/L) for 21 d. The animals' body weight, behavior, and bowel movements were recorded weekly. After sacrifice, visual and microscopic observations of pathological changes of colon tissue were made, body weight and wet colon mass index were measured and recorded, and serum levels of interleukin-23 (IL-23) and TNF-alpha were measured using ELISA. Expression of calcitonin gene-related peptide in colon tissue was measured by RT-PCR. Finally, changes in rat intestinal microflora status were measured in all groups.

Results: We found that treatment with C. butyricum lowered the serum levels of both IL-23 and tumor necrosis factor-alpha (TNF-alpha) with similar or even better efficiency than that of mesalamine or sodium butyrate. The rat intestinal flora appeared to recover more quickly in the group treated with C. butyricum than in the mesalamine and sodium butyrate groups. Finally, we found that the expression level of calcitonin gene related peptide was elevated in colon tissue in the sodium butyrate treated group but not in the C. butyricum or mesalamine treated groups, indicating a sensitization of colon following sodium butyrate treatment.

Conclusion: In our experimental colitis model, treatment with C. butyricum CGMCC0313, a probiotic supplement, is at least as efficient as treatment with mesalamine.

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Figures

Figure 1
Figure 1
Histopathological sections of colons from oxazolone-induced rat colitis. Panel A, C, D, and E: Twenty-one days after establishment of model; B: Day 3 after establishment of model (HE × 50). A: Negative control; B: Positive control; C: Probiotic (C. butyricum) group; D: Mesalamine group; E: Sodium butyrate group.
Figure 2
Figure 2
Effect on CGRP expression in treated or untreated rat experimental colitis induced with oxazolone. M: MW marker; 1: Negative control; 2: Positive control; 3: C. butyricum; 4: Mesalamine; 5: Sodium butyrate.
See this image and copyright information in PMC

References

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