Effects of Long-Term Administration of Royal Jelly on Pituitary Weight and Gene Expression in Middle-Aged Female Rats

概要

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To determine the effects of ingested royal jelly (RJ) on the pituitary in middle-aged female rats, we performed a long-term RJ administration test. Several animals showed age-related increases in pituitary weight, and RJ administration compensated for the increase. RJ tended to down-regulate prolactin mRNA and up-regulated thyroid-stimulating hormone β mRNA in the pituitary. This suggests that RJ compensates for age-associated decline in pituitary functions.