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Abstract

Volume 3, Issue 2 (June 2001) 3, 87–95;

Vas deferens, a site of male contraception: an overview

N.K. Lohiya, B. Manivannan, P.K. Mishra, N. Pathak

Reproductive Physiology Section, Department of Zoology, University of Rajasthan, Jaipur -302 004, India

Advance online publication 1 June 2001

Abstract

The vas deferens is a site which can be exploited for male contraception without undue side effects. The only effective technique available for male contraception is vasectomy, being practiced world wide, despite that it is a permanent surgical procedure and its successful reversal is not assured. Although no-scalpel vasectomy minimizes surgical procedures, the fate of its reversal is akin to that of vasectomy. Several occlusive and non-occlusive vasal procedures which claim to be reversible without surgical intervention, possess more disadvantages than advantages. Vas occlusion with plug, Shug or medical grade silicone rubber, although claimed to produce reversible azoospermia without affecting spermatogenesis, requires skilled microsurgery for their implantation and later removal. RISUGR, a non-sclerotic polymer styrene maleic anhydride (SMA), could be more advantageous than vasectomy and other vas occlusive procedures in that it could be a totally non-invasive procedure by no-scalpel injection and non-invasive reversal. It is claimed to offer long-term contraception without adverse side effects and also to be possible as a male spacing method by repeated vas occlusion and non-invasive reversal. The drug is currently under multicentre Phase III clinical trial.

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