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Ganciclovir induces reproductive hazards in male rats after short-term exposure

Institut für Klinische Pharmakologie und Toxikologie, Freie Universität Berlin, Garystr. 5, 14195 Berlin, Germany

A. Klug

Institut für Klinische Pharmakologie und Toxikologie, Freie Universität Berlin, Garystr. 5, 14195 Berlin, Germany

H-J. Merker

Institut für Klinische Pharmakologie und Toxikologie, Freie Universität Berlin, Garystr. 5, 14195 Berlin, Germany

I. Chahoud

Institut für Klinische Pharmakologie und Toxikologie, Freie Universität Berlin, Garystr. 5, 14195 Berlin, Germany

1 The effect of short-term treatment of ganciclovir on male reproduction in adult rats was studied. The animals were treated subcutaneously with either a single dose of 60 mg/kg daily for 5 days (Gan5day) or with 100 mg/kg administered three times at 4 h- intervals (Gan1day). The effects were investigated every 2 weeks up to 8 weeks, followed by investigations 16 and 24 weeks after treatment to detect the potential of recovery.

2 Time to mating was significantly increased in Gan1day group. The pregnancy index and outcome were only decreased 8 weeks (Gan5day and Gan1day) or 16 weeks (Gan1day) after treatment.

3 The lowest values of sperm variables studied were registered 8 weeks after treatment: The number of spermatid was reduced up to 4% (Gan5day) or 2% (Gan1day) of control; the sperm number was 5% and 8% of control in Gan5day and Gan1day, respectively. Over 80% of sperm were abnormal in Gan5day group, and only few normal sperm was detected in Gan1day group.

4 Morphological investigation of testes revealed a clear- cut time-dependency effect. Four weeks after treat ment distinct alterations were located exclusively in the peripheral part of the tubuli which included fat inclusions, cell and pyknotic nuclear debris and swellings of Sertoli cells. The effect was reversible 24 weeks after treatment.

5 Ganciclovir induces testicular damage and affects sperm variables after short-term exposure. The in tensity and degree of the hazards varied in between the time of investigation after treatment.

Key Words: ganciclovir • sperm number • daily sperm production • sperm morphology

Human & Experimental Toxicology, Vol. 16, No. 9, 505-511 (1997)
DOI: 10.1177/096032719701600905


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