Pregnancy, but not dietary octanoic acid supplementation, stimulates the ghrelin-pituitary growth hormone axis in mice

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Acylated ghrelin is not required for the surge in pituitary growth hormone observed in pregnant mice.

OBJECTIVE Ghrelin is produced by the stomach, hypothalamus and pituitary. It circulates as acylated ghrelin (AG, which stimulates growth hormone (GH) secretion) and unacylated ghrelin (UAG). Acylation is mediated by the enzyme ghrelin O-acyltransferase (GOAT). In mice, pregnancy is associated with a marked increase in circulating pituitary GH. We investigated the role of AG and UAG in the surge...

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Role of Ghrelin in Regulation of Growth Hormone Secretion by Ghrelin-pituitary-gh Axis Linkage

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Leptin-deficient obese mice (ob/ob) have decreased circulating growth hormone (GH) and pituitary GH and ghrelin receptor (GHS-R) mRNA levels, whereas hypothalamic GH-releasing hormone (GHRH) and somatostatin (SST) expression do not differ from lean controls. Given the fact that GH is suppressed in diet-induced obesity (a state of hyperleptinemia), it remains to be determined whether the absence...

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ژورنال

عنوان ژورنال: Journal of Endocrinology

سال: 2020

ISSN: 0022-0795,1479-6805

DOI: 10.1530/joe-20-0072