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- W2091031954 abstract "It has been known for over half a century that homocysteine levels are elevated in liver cirrhosis, but the basis for it is not fully understood. Using differential display, we identified betaine homocysteine methyltransferase (BHMT) as a gene down-regulated in rat liver cirrhosis and most likely involved in this dysregulation. A partial BHMT clone was isolated by screening of a cDNA library with the differential display fragment. The full-length gene was generated by primer extension of cDNA. Expression levels of BHMT in cirrhotic livers of bile duct ligated rats were compared to controls by Northern and Western blotting as well as by enzyme activity measurements. BHMT mRNA levels were reduced to 29±23% in established liver cirrhosis induced by bile duct ligation (BDL) as compared to controls. Enzyme assays in crude liver homogenates showed a similar reduction in BHMT activity in bile duct ligated rat livers. By Western blotting, BHMT could be detected in crude liver homogenates of control animals, but was reduced to below the limit of detection in cirrhotic livers. In conclusion, these findings establish a reduced BHMT enzyme activity in cirrhotic rat livers, which may explain the elevated plasma homocysteine levels in cirrhosis." @default.
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- W2091031954 date "2003-05-01" @default.
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- W2091031954 title "Betaine homocysteine methyltransferase: gene cloning and expression analysis in rat liver cirrhosis" @default.
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- W2091031954 doi "https://doi.org/10.1016/s0925-4439(03)00037-1" @default.
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