RESUMO
The ultrastructure of the testis was studied in chronically uremic rats with and without administration of hCG. Concomitantly, sham operated pair fed control rats were examined. In uremic rats the seminiferous tubules contained a certain number of necrotic spermatocytes and spermatids with defective acrosome formation. The Sertoli cells showed evidence of reduced function: they had only scarce endoplasmic reticulum and lipid droplets. Leydig cells were rather heterogeneous with respect to ultrastructure. Some cells had poorly developed endoplasmic reticulum, a small Golgi apparatus and no lipid droplets, while others appeared normal. Administration of hCG had marked effects on Leydig cells: such cells acquired numerous mitochondria and rough endoplasmic reticulum, while smooth endoplasmic reticulum, lipid droplets, lysosomes and Golgi apparatus were inconspicuous. In contrast, administration of hCH failed to reverse premature germ cell loss.
Assuntos
Testículo/ultraestrutura , Uremia/patologia , Animais , Gonadotropina Coriônica/farmacologia , Células Intersticiais do Testículo/efeitos dos fármacos , Células Intersticiais do Testículo/ultraestrutura , Masculino , Microscopia Eletrônica , Organoides/ultraestrutura , Ratos , Células de Sertoli/efeitos dos fármacos , Células de Sertoli/ultraestrutura , Espermatogênese/efeitos dos fármacosRESUMO
38 psychiatric inpatients with various degrees of sleeping disorders were given L-tryptophane plus oxprenolol or placebo, each for two nights. Self-rating, rating of the nursing staff, tests of attention level and motor performance were the variables of the investigation. The statistical evaluation of the double-blind study shows no significant difference under these specific experimental conditions.