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Brain D1 dopamine receptor in alloxan-induced diabetes
1Department of Pharmacology, Medical School, University of Zagreb, Republic of Croatia.
Diabetes
|September 1, 1992
Abstract:
Specific binding of [3H]SCH 23390 to dopamine D1 receptors in the striatum and olfactory tubercle in 14-day alloxan-induced diabetic rats was investigated. The Scatchard analysis revealed decreased D1 receptor density in the striatum (Bmax values were 548 +/- 23 fmol/mg protein for the control and 466 +/- 33 fmol/mg for the diabetic rats). No change was observed in the olfactory tubercle (Bmax; 299 +/- 27 fmol/mg for the control and 317 +/- 32 fmol/mg for the diabetic rats). Thus, specific binding of [3H]SCH 23390 to striatal and olfactory tubercle membranes showed region-specific changes of brain dopamine D1 receptors in alloxan diabetic rats.