Hydroxylation of collagen by lungs of rats administered bleomycin.

Jerold A Last, J. E. Gerriets, L. C. Armstrong, T. R. Gelzleichter, K. M. Reiser

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Collagen synthesized by tissue minces from lungs of rats administered 1 unit of bleomycin by intratracheal instillation 1 or 2 wk earlier contained relatively more hydroxylysine than did collagen made by lungs from saline-instilled control animals. Most, if not all, of the relative increase in lysine hydroxylation could be localized to the alpha 1 (I) chain of type I collagen. Lung homogenates from bleomycin-treated rats showed increased activity of lysyl hydroxylase (EC 1.14.11.4), the enzyme catalyzing the conversion of collagen-bound lysine to hydroxylysine. Thus, the increased hydroxylation of lysine and of lysine-derived cross-links previously observed in collagen of diseased human lungs and in animal models of lung fibrosis is reflected in an in vitro system.

Original languageEnglish (US)
Pages (from-to)543-548
Number of pages6
JournalAmerican Journal of Respiratory Cell and Molecular Biology
Volume2
Issue number6
StatePublished - Jun 1990

ASJC Scopus subject areas

  • Cell Biology

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    Last, J. A., Gerriets, J. E., Armstrong, L. C., Gelzleichter, T. R., & Reiser, K. M. (1990). Hydroxylation of collagen by lungs of rats administered bleomycin. American Journal of Respiratory Cell and Molecular Biology, 2(6), 543-548.