Journal article
Absence of Age-Related Changes in the Binding of the Beta Adrenergic Antagonist 125I-Iodohydroxybenzylpindolol in Rat Heart
Proceedings of the Society for Experimental Biology and Medicine, v 186(1)
Oct 1987
PMID: 2888126
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Abstract
Abstract
The effect of age on the density and the affinity of beta adrenergic receptors was determined in the hearts of Fischer 344 rats at three ages, 6, 12, and 24 months old. The binding of the beta adrenergic antagonist 125I-iodohydroxybenzylpindolol (IHYP), was used to quantitate and characterize cardiac beta adrenergic receptors. The maximal number of binding sites (Bmax = F moles/mg of protein) were 26.3±2.5, 25.4±0.99, and 24.5±2.4 and the dissociation constants (Kd = nM) were 0.166±0.014, 0.126±0.006, and 0.135±0.015 for 6, 12, and 24 months-old animals, respectively . There were no significant differences among the three ages. These results support the contention that neither beta adrenergic receptor density or affinity changes with age in the ventricles of the rat heart.
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Details
- Title
- Absence of Age-Related Changes in the Binding of the Beta Adrenergic Antagonist 125I-Iodohydroxybenzylpindolol in Rat Heart
- Creators
- Nihal Tumer - *Med Coll PA, Dept. Pharmacology, 3300 Henry Ave., Phila., PA 19129Jonathan Bender - *Med Coll PA, Dept. Pharmacology, 3300 Henry Ave., Phila., PA 19129Jay Roberts - *Med Coll PA, Dept. Pharmacology, 3300 Henry Ave., Phila., PA 19129James R Roberts - Emergency Medicine
- Publication Details
- Proceedings of the Society for Experimental Biology and Medicine, v 186(1)
- Publisher
- SAGE Publications
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Emergency Medicine
- Web of Science ID
- WOS:A1987K063600020
- Scopus ID
- 2-s2.0-0023199950
- Other Identifier
- 991019183989404721
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- Web of Science research areas
- Medicine, Research & Experimental