Ocular NAD-dependent alcohol dehydrogenase and aldehyde dehydrogenase in the baboon

Roger S. Holmes, John L. VandeBerg

    Research output: Contribution to journalArticle

    35 Scopus citations

    Abstract

    Isoelectric focusing (IEF) techniques and spectrophotometric analyses were used to examine the distribution and properties of alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALDH) isozymes in ocular tissue of olive and yellow baboons. Cornea extracts exhibited very high specific activities of the 'stomach-specific' ADH and ALDH isozymes (designated ADH-3 and ALDH-III respectively), and were devoid of the major liver and kidney isozymes. Lens extracts exhibited lower activities of ADH-3 and ALDH-III, and also showed significant activity of ALDH-II (the major liver cytosolic isozyme) and a group of 'lens-specific' ALDHs of low isoelectric point. Extracts of baboon retina also exhibited ADH-3 and ALDH-III activities, together with activities of the major liver cytosolic (ALDH-II) and mitochondrial (ALDH-I) isozymes of ALDH; and ADH-5 (or χ-ADH) activity. Evidence was obtained for individual variation of ALDH-III activity in the lens. An electrophoretic variant for ADH-3 indicated genetic identity of the major stomach and ocular ADH isozyme. The catalytic properties of the high specific activity corneal ADH and ALDH isozymes indicated a role in the detoxification of lipid peroxidation by-products.

    Original languageEnglish (US)
    Pages (from-to)383-396
    Number of pages14
    JournalExperimental Eye Research
    Volume43
    Issue number3
    DOIs
    StatePublished - Sep 1986

    Keywords

    • alcohol dehydrogenase
    • aldehyde dehydrogenase
    • baboon
    • cornea
    • isozymes
    • lens
    • retina
    • variants

    ASJC Scopus subject areas

    • Ophthalmology
    • Sensory Systems
    • Cellular and Molecular Neuroscience

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