Mode of action of delta-9-tetrahydrocannabinol on hypothalamo-pituitary function in adult female rats.
Administration of delta-9-tetrahydrocannabinol (delta 9-THC) to pro-oestrous rats (5 mg/kg and 10 mg/kg, i.p. for 10 days) decreased the hypothalamic LH-RH content. Serum prolactin levels were reduced but serum LH and FSH and pituitary hormone content were similar to values in dioestrous rats. It is suggested that delta 9-THC acts primarily on the hypothalamus.
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