[3H]-nitrendipine binding in membranes obtained from hypoxic and reoxygenated heart

We compared the binding properties of [3H]-nitrendipine in heart membranes from normal guinea-pig heart and from hypoxic or hypoxic and reoxygenated heart. The [3H]-nitrendipine binds a single class of high capacity (Bmax 667.2 +/- 105.2) with high affinity (KD 0.14 +/- 0.02) binding sites. By contr...

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Bibliographic Details
Published in:Biochemical pharmacology Vol. 36; no. 7; p. 1059
Main Authors: Matucci, R, Bennardini, F, Sciammarella, M L, Baccaro, C, Stendardi, I, Franconi, F, Giotti, A
Format: Journal Article
Language:English
Published: England 01-04-1987
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Summary:We compared the binding properties of [3H]-nitrendipine in heart membranes from normal guinea-pig heart and from hypoxic or hypoxic and reoxygenated heart. The [3H]-nitrendipine binds a single class of high capacity (Bmax 667.2 +/- 105.2) with high affinity (KD 0.14 +/- 0.02) binding sites. By contrast, in membranes of hypoxic and reoxygenated heart the Bmax decreases significantly while it remains unaffected during hypoxia. Xanthinoxidase activity is increased in hypoxic-reoxygenated hearts.
ISSN:0006-2952
DOI:10.1016/0006-2952(87)90414-X