β-Adrenergic Binding Sites in Fetal Rat Brain |
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Authors: | A. Bruinink W. Lichtensteiger |
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Affiliation: | Institute of Pharmacology, University of Zürich, Zürich, Switzerland |
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Abstract: | Abstract: The ontogeny of β-adrenergic binding sites was studied in forebrain homogenates from male and female rats. Specific [3H]dihydroalprenolol binding was defined by the difference between binding in the presence and in the absence of 330 n M (+)oxprenolol. Significant binding was detected at prenatal stages. The dissociation constants ( K D of [3H]dihydroalprenolol binding were similar at gestational day (GD) 193/4 and postnatal day (PN) 31. Binding was first detected in forebrain at GD 153/4. The amount of binding sites increased until PN 31, when adult values were reached. No sex differences could be detected at any of the stages tested (GD 193/4-PN 31). |
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Keywords: | p-Adrenergic Ontogeny Receptors [3H]Dihydroalprenolol Fetus |
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