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Muscarinic, alpha‐adrenergic and peptide receptors regulate the same calcium influx sites in the parotid gland.
Open accessAbstract
1. Carbachol, phenylephrine and substance P were each capable of producing a transient release of K (86 Rb) from rat parotid slices in the absence of extracellular Ca. 2. Each of the agonists was also capable of producing "cross‐receptor inactivation"; that is, if a transient response was elicited by any one of the agonists then no transient response could be obtained by either of the other two. 3. Removal of carbachol from muscarinic receptors with atropine did not reverse the cross‐receptor inactivation of the substance P response unless Ca was added with substance P or unless Ca was present when atropine was added. 4. It is concluded that the K release response in the parotid gland is mediated by receptor‐controlled Ca influx sites. These influx sites also bind Ca at a location inaccessible to EGTA and release the bound Ca upon receptor activation. 5. It is also conlcuded that all three receptors (muscarinic, alpha‐adrenergic, and peptide) appear to regulate the same Ca influx sites.
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Citations
Cited by
A model for receptor-regulated calcium entry
Putney, J. W. (1986) · Cell Calcium · doi:10.1016/0143-4160(86)90026-6 · Cited by 2,575
Self-citationCapacitative calcium entry revisited
Putney, J. W. (1990) · Cell Calcium · doi:10.1016/0143-4160(90)90016-n · Cited by 1,487
Self-citationMetabolism of inositol 1,4,5-trisphosphate and inositol 1,3,4-trisphosphate in rat parotid glands
Irvine, R. F., Anggård, E. E., Letcher, A. J., & Downes, C. P. (1985) · Biochemical Journal · doi:10.1042/bj2290505 · Cited by 450
Receptor-activated Ca2+ influx: how many mechanisms for how many channels?
Fasolato, C., Innocenti, B., & Pozzan, T. (1994) · Trends in Pharmacological Sciences · doi:10.1016/0165-6147(94)90282-8 · Cited by 400
CaT1 manifests the pore properties of the calcium-release-activated calcium channel
Yue, L., Peng, J.-B., Hediger, M. A., & Clapham, D. E. (2001) · Nature · doi:10.1038/35070596 · Cited by 356
Metadata
- Authors
- Putney, J. W.
- Venue
- The Journal of Physiology
- Publisher
- Wiley
- Published
- 1977-06
- Volume
- 268
- Issue
- 1
- Pages
- 139-149
- ISSN
- 0022-3751 (ISSN-L)
- 1469-7793
- OpenAlex
- W1967453616
- Cited by
- 200
- References
- 0
- FWCI
- 5.11
- Type
- journal article
- Language
- en
- Open access
- green
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- Putney, J. W. (1977). Muscarinic, alpha‐adrenergic and peptide receptors regulate the same calcium influx sites in the parotid gland. The Journal of Physiology. https://doi.org/10.1113/jphysiol.1977.sp011851
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