Alpha- and beta-adrenergic receptors of the rat salivary gland. Elevation after chemical sympathectomy
Binding of [3H]dihydroergokryptine and [3H]dihydroalprenolol to membrane preparations from rat submaxillary gland was measured to characterize the alpha- and beta-adrenergic receptors, respectively. Kinetic analysis of the data revealed a high affinity binding site for each radioligand. Inhibition of binding at each site was stereospecific for the active isomer of the catecholamine used. The greater ability of a beta1 than beta2 specific beta-adrenergic antagonist to displace [3H]dihydroalprenolol binding indicated that this binding site was of the beta1 type. Chemical sympathectomy with reserpine or 6-hydroxydopamine resulted in a significant increase in both [3H]dihydroalprenolol and [3H]dihydroergokryptine binding in the rat submaxillary gland. 3scatchard analysis of the data indicated that these increases in binding were due to a change in total number of binding sites for [3H]dihydroergokryptine and [3H]dihydroalprenolol with little change in apparent affinities. This suggests that changes in alpha- and beta-adrenergic receptor density may be important in the development of supersensitivity in salivary glands after reserpine and 6-hydroxydopamine treatment.
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
1979 |
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| Erschienen: |
1979 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:584 |
|---|---|
| Enthalten in: |
Biochimica et biophysica acta - 584(1979), 2 vom: 01. Mai, Seite 231-41 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Pointon, S E [VerfasserIn] |
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| Themen: |
8B1QWR724A |
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| Anmerkungen: |
Date Completed 28.07.1979 Date Revised 09.06.2019 published: Print Citation Status MEDLINE |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM002185563 |
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| 100 | 1 | |a Pointon, S E |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Alpha- and beta-adrenergic receptors of the rat salivary gland. Elevation after chemical sympathectomy |
| 264 | 1 | |c 1979 | |
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a ohne Hilfsmittel zu benutzen |b n |2 rdamedia | ||
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| 500 | |a Date Completed 28.07.1979 | ||
| 500 | |a Date Revised 09.06.2019 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a Binding of [3H]dihydroergokryptine and [3H]dihydroalprenolol to membrane preparations from rat submaxillary gland was measured to characterize the alpha- and beta-adrenergic receptors, respectively. Kinetic analysis of the data revealed a high affinity binding site for each radioligand. Inhibition of binding at each site was stereospecific for the active isomer of the catecholamine used. The greater ability of a beta1 than beta2 specific beta-adrenergic antagonist to displace [3H]dihydroalprenolol binding indicated that this binding site was of the beta1 type. Chemical sympathectomy with reserpine or 6-hydroxydopamine resulted in a significant increase in both [3H]dihydroalprenolol and [3H]dihydroergokryptine binding in the rat submaxillary gland. 3scatchard analysis of the data indicated that these increases in binding were due to a change in total number of binding sites for [3H]dihydroergokryptine and [3H]dihydroalprenolol with little change in apparent affinities. This suggests that changes in alpha- and beta-adrenergic receptor density may be important in the development of supersensitivity in salivary glands after reserpine and 6-hydroxydopamine treatment | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, U.S. Gov't, P.H.S. | |
| 650 | 7 | |a Hydroxydopamines |2 NLM | |
| 650 | 7 | |a Receptors, Adrenergic |2 NLM | |
| 650 | 7 | |a Receptors, Adrenergic, alpha |2 NLM | |
| 650 | 7 | |a Receptors, Adrenergic, beta |2 NLM | |
| 650 | 7 | |a Reserpine |2 NLM | |
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