Electrophoretic patterns of proteins were studied in the fat bodies of males and females of Rana esculenta. The patterns, except the “o” band present only in the females, manifest quantitative differences during the reproductive season. These variations have been briefly discussed in relation to the reproductive phenomena.
L'attività in vitro della -glucoronidasi e della fosfatasi acida è variamente influenzata nel sistema ipotalamo-ipofisario di maschi adulti di Rana esculenta dagli ormoni endogeni (prodotti dalle ghiandole periferiche). Gli Autori discutono in particolare l'influenza del testosterone sull'attività di questi due sistemi enzimatici.
The role of periepididymal fat in the control of male fertility has been studied in the mouse. Administration of cyproterone acetate (CPA) totally blocks the reproductive capacity of intact males and the periepididymal fat pad regresses notably. The reproductive capacity of CPA-treated males is restored six months after the suspension of antiandrogenic treatment. The reproductive recovery of treated males is more rapid if they are injected with homogenate of the periepididymal fat.
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