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EFFECT OF STARVATION ON LH LEVELS IN MALE AND FEMALE HAMSTERS

Starvation for more than one oestrous cycle in the hamster has been reported to block follicular development resulting in ovaries with no antral follicles or corpora lutea, but of normal weight (Printz & Greenwald, 1970). Histological evidence suggested that the maintenance of ovarian weight was due to hypertrophy of interstitial tissue (Printz & Greenwald, 1970). This response to malnutrition differs from that in the rat where starvation or restricted feed intake leads to a reduction in ovarian weight (Mulinos & Pomerantz, 1940; Howland, 1972a). In the underfed rat, the reduction in ovarian weight is accompanied by reduced serum levels of LH (Howland, 1971, 1972b). In the starved hamster, however, the hypertrophy of the interstitium was interpreted as evidence for an increase in LH release (Printz & Greenwald, 1970). Because of this