Abstract
SUMMARY Small doses of luteinizing hormone (LH) have been shown to exert a stimulating effect on the in vitro carbohydrate metabolism of the prepubertal rat ovary. In order to determine the specificity of the response, studies were undertaken comparing the effects caused by LH with those of other anterior pituitary hormones. Preparations of thyroid stimulating hormone (TSH) caused responses similar to those caused by LH, when added to the media in which prepubertal rat ovaries were incubated. A detailed study of the effects of TSH preparations (prepared by different procedures with known low levels of LH contamination) on lactic acid production, has been undertaken. All TSH preparations tested caused considerably greater stimulation of glycolysis than could be accounted for on the basis of their contamination with LH when the latter was appraised by the ovarian ascorbic acid depletion assay.
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