THE EFFECTS OF HIGH EPIDIDYMAL OBSTRUCTION UPON THE LEYDIG CELL VOLUME OF THE RAT TESTIS

Author:

HARRISON R. G.,MACMILLAN E. W.

Abstract

SUMMARY 1. A quantitative estimation of the total interstitial cell content of experimental and control testes was undertaken in nine mature albino rats killed at periods ranging from 7 to 342 days, following experimental interruption of arteries supplying the right caput epididymidis. In each animal testicular atrophy was substantial, and histological examination confirmed that the vasa efferentia and initial segment of the caput epididymidis were impervious to the passage of spermatozoa. The left testis was used as a control and remained in situ until the time of autopsy. 2. An increase in the total volume of the interstitial cells was recorded at 28 and 189 days after operation, by 24% in the former and 45% in the latter. The increase in total volume apparent at 28 days is almost certainly associated with the disposal of large quantities of shed germinal epithelium. The absolute increase at 189 days appears to be associated with the occurrence of a patchy necrosis of the seminiferous tubules. 3. The results recorded compare favourably with the experimental evidence assembled by Slotopolsky & Schinz [1925], and accord with other evidence which fails to substantiate Steinach's claim that the interstitial cells undergo hyperplasia and hypertrophy when the vasa efferentia are ligated.

Publisher

Bioscientifica

Subject

Endocrinology,Endocrinology, Diabetes and Metabolism

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