Author:
Tsafriri A.,Lieberman M. E.,Ahrén K.,Lindner H. R.
Abstract
ABSTRACT
Luteinizing hormone (NIH-LH-S18; 5 μg/ml) stimulated aerobic glycolysis in cultured Graafian follicles explanted from pro-oestrous rats before the preovulatory gonadotrophin surge: lactate accumulation in the medium was 70 % above control levels during 6 h incubations. Iodoacetate (2.5× 10-5 m) prevented this effect, without impairing the ability of LH to induce resumption of oocytic meiosis. Enrichment of the medium with pyruvate (3.3 × 10-4 m) or lactate (2.5 × 10-2 m) did not in itself cause ovum maturation. The results do not support the hypothesis that termination of meiotic arrest by LH is due to stimulation of glycolytic activity in the follicle cells, resulting in increased availability of an energy source readily utilizable by the oocyte.
Subject
Endocrinology,General Medicine,Endocrinology, Diabetes and Metabolism
Cited by
39 articles.
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