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TESTICULAR HYPERTROPHY IN RATS

Experiments on hypertrophy of the testis have been carried out by Lipschutz (1922) who stated there was accelerated growth of the contralateral testis which rapidly reached maximum weight, but that no true hypertrophy occurred after unilateral orchidectomy. Grant (1955) stated that an increase in testicular volume occurred after unilateral orchidectomy in three albino rats. Shellabarger (1963) stated there was no increase in testicular weight after removal of a single testis. Being an endocrine organ, the interstitial cells, including Leydig cells, of the remaining testis should reflect the effects of unilateral castration. Since spermatogenesis is hormonally controlled, the seminiferous tubule might be expected to respond by enhancing gamete production as do solitary remaining ovaries after unilateral spaying. The present work was designed to re-examine the above observations.

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