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Postjunctional supersensitivity of the rat vas deferens and gap junctions
Canadian Journal of Physiology and Pharmacology
|June 1, 1976
Summary
Reserpine treatment in rats did not induce gap junctions in the vas deferens. This study found no evidence of gap junction formation in rat vas deferens, despite observed supersensitivity and activity.
Area of Science:
- Cell biology
- Physiology
- Pharmacology
Background:
- Gap junctions facilitate intercellular communication in various tissues.
- Reserpine is known to induce postjunctional supersensitivity and spontaneous activity in the vas deferens.
- The role of gap junctions in reserpine-induced effects on the vas deferens is not fully understood.
Purpose of the Study:
- To investigate the presence of gap junctions in the rat vas deferens and duodenum.
- To determine if reserpine treatment influences gap junction formation in the rat vas deferens.
Main Methods:
- Electron microscopy was used to examine rat duodenum and vas deferens tissues.
- Tissues were fixed with glutaraldehyde and post-osmicated.
- Animals were treated with reserpine (1.0 mg/kg/day for 7 days) or served as controls.
Main Results:
- Gap junctions were readily observed in the duodenum of both control and reserpine-treated rats.
- Gap junctions could not be demonstrated in the vas deferens of either control or reserpine-treated rats.
- Reserpine treatment did not lead to the formation of gap junctions in the vas deferens.
Conclusions:
- The formation of gap junctions is not responsible for the reserpine-induced postjunctional supersensitivity and spontaneous activity observed in the rat vas deferens.
- Intercellular communication in the rat vas deferens may occur through mechanisms other than gap junctions.