Jin B, Zhang ZC, Sun T, Cheng LF. Portal collagenase administration reverses carbon tetrachloride-induced rabbit liver cirrhosis.
Shijie Huaren Xiaohua Zazhi 2006;
14:772-777. [DOI:
10.11569/wcjd.v14.i8.772]
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Abstract
AIM: To investigate whether portal collagenase administration can reverse liver cirrhosis.
METHODS: Four normal controls (group A) received olive oil subcutaneously (sc) for 12 weeks followed by normal saline portal perfusion for 12 weeks. Another four rabbits (group B) received carbon tetrachloride (CCl4) sc for 12 weeks and then 6 mg of collagenase portally for 12 weeks, while three control rabbits (group C) received CCl4 for 12 weeks followed by saline for 12 weeks.
RESULTS: After 12 weeks of CCl4 and another 12 weeks of portal vein perfusion, liver hydroxyproline content in collagenase-treated rabbits was significantly decreased as compared with that in saline-treated controls (177.5 ± 35.6 μg/g vs 446.3 ± 150.1 μg/g; F = 13.78, P < 0.01). Further, liver histology showed complete regression of cirrhosis in the collagenase-treated animals. No toxicity of liver, kidney, lung, brain or heart was observed histologically. Anaphylaxis occurred in 2 animals and one was fatal.
CONCLUSION: Portal administration of collagenase can promote the reversion of established liver cirrhosis in the rabbit CCl4 model.
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