Summary
Study of the fine structure of the human interstitial cells after prolonged stimulation with human gonadotrophin reveals a striking increase in the quantity of the agranular endoplasmic reticulum. This is accompanied by an increase in the number of mitochondria which exhibit more extensive cristae, collections of intramitochondrial lipid and aggregations of electron-dense granular deposits. A rise is also evident in the number of lipofuscin pigment deposits and granular membrane-bounded bodies, both of which exhibit acid phosphatase activity. These changes after gonadotrophic stimulation are discussed in relation to steroid biosynthesis.
In the pretreatment biopsies of these patients aged between 25–35 years, some interstitial cells contain intranuclear crystals which exhibit a hexagonal structure. The relationship of these intranuclear crystals to the cytoplasmic crystals of Reinke is discussed.
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The author is indebted to Dr. J. W. Johnstone and Dr. A. Long for the human material used in this study. Thanks are also due to Dr. H. P. Taft for helpful suggestions in the management of these patients, to Professor B. Hudson for the estimations of plasma testosterone and to Dr. J. B. Brown for the supply of human pituitary gonadotrophin and the estimations of urinary oestrogens. The technical help of Mr. T. Mezciems and the photographic assistance of Mr. J. S. Simmons F. R. P. S. and Miss S. Flett is gratefully acknowledged.
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de Kretser, D.M. Changes in the fine structure of the human testicular interstitial cells after treatment with human gonadotrophins. Zeitschrift für Zellforschung 83, 344–358 (1967). https://doi.org/10.1007/BF00336863
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DOI: https://doi.org/10.1007/BF00336863