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Exp Clin Endocrinol Diabetes 1999; 107(7): 453-456
DOI: 10.1055/s-0029-1212137
Article

© J. A. Barth Verlag in Georg Thieme Verlag KG Stuttgart · New York

Glucosaminyl N-deacetylase mRNA expression in diabetic rats

P. Oturai, M. Deckert, B. Rolin, T. Jensen, A. Kofoed-Enevoldsen
  • Steno Diabetes Center, Gentofte, and Novo Nordisk, Health Care Discovery, Bagsvaerd, Denmark
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Publication Date:
14 July 2009 (online)

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Summary

Glucosaminyl N-deacetylase is a key enzyme in the synthesis of heparan sulphate. N-deacetylase activity is inhibited in experimental diabetes. The mechanism by which diabetes influences N-deacetylase activity is unknown. Using reverse transcription PCR we quantified hepatic N-deacetylase mRNA in normal and streptozotocin diabetic rats. A negative correlation was found between final blood glucose and N-deacetylase mRNA expression in diabetic rats, r = —0.44, p < 0.05. N-deacetylase mRNA expression was also correlated to N-deacetylase activity (r = 0.48, p < 0.05). N-deacetylase:cyclophilin mRNA ratio was not significantly affected by diabetes, 0.26 (0.2-0.35) vs 0.31 (0.16-0.5), p =0.48, in 10 weeks and 0.21 (0.15-0.37) vs 0.27 (0.19-0.32), p = 0.65, in 8 months rats, diabetic and normal rats respectively, median (interquartile range). The negative correlation between blood glucose and N-deacetylase mRNA in diabetic rats suggests however that altered gene expression may contribute to the altered N-deacetylase activity seen in experimental diabetes.

Key words

N-deacetylase - experimental diabetes - streptozotion diabetic rat - heparan sulphate