Abstract
The selective a2 adrenergic antagonist yohimbine has been shown to prevent the noradrenaline induced inhibition of insulin secretion from isolated rat islets of Langerhans, Binding studies utilizing [3H]yohimbine showed specific binding to dispersed rat islet cells with a Kd of 2.9 nM and receptor concentration of 645 fmols/mg protein. The use of chloroquine to inhibit receptor recycling did not affect binding of the ligand. Binding studies and secretion data are consistent with the suggestion that adrenergic receptors of the α2 sub-type may play a dominant role in the regulation of insulin secretion.
References
Cherksey, B., Mendelsohn, S., Zadunaisky, J. and Altszuler, N. (1983).Pharmacology 27:45–102.
Dulis, B. H. and Wilson, I. B. (1980).J. Biol. Chem. 255:1043–1048.
Fyles, J. M., Cawthorne, M. A. and Howell., S. L. (1986).J. Endocrinol. 111:263–270.
Gey, G. O. and Gey, M. K. (1936).Am. J. Cancer 27:45–76.
Hii, C. S. T. and Howell, S. L. (1984).Diabetes 33:291–296.
Howell, S. L. and Taylor, K. W. (1968).Biochem. J. 108:17–24.
Ishii, K., Yamamoto, S. and Kato, R. (1985).Naunyn-Schmiedebergs Arch Pharm. 328:253–257.
Mendel, C. M. and Mendel, D. B. (1985)Naunyn-Schmiedebergs Arch. Pharm 328:253–257.
Mendel, C. M. and Mendel, D. B. (1985).Biochem. J. 228:269–272.
Morgan, N. G. and Montague, W. (1985).Biochem. J. 226:571–576.
Nakaki, T., Nakadate, T. and Kato, R. (1980).Naunyn-Schmiedebergs Arch. Pharm 313:151–153
Pipeleers, D. G., In't Veld, P. A., Van de Winkel, M., Maes, E., Schuit, F. C. and Gepts, W. (1985).Endocrinology 117:806–816.
Posner, B. I., Bergeron, J. S. M., Josefsberg, Z., Khan, M. N., Khan, R. J., Patel, B. A., Sikstrom, R. A. and Verma, A. K. (1981).Rec. Prog. Horm. Res. 37:539–582.
Scatchard, G. (1949).Ann. N. Y. Acad. Sci. 51:660–672.
Schuit, F. C. and Pipeleers, D. G. (1986).Science 232:875–878.
Tsai, B. S. and Lefkowitz, R. J. (1978).Mol. Pharm. 14:540–548.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fyles, J.M., Cawthorne, M.A. & Howell, S.L. The determination of alpha-adrenergic receptor concentration on rat pancreatic islet cells. Biosci Rep 7, 17–22 (1987). https://doi.org/10.1007/BF01122723
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF01122723