Persistent changes in somatostatin and neuropeptide Y mRNA levels but not in growth hormone-releasing hormone mRNA levels in adult rats after intrauterine growth retardation

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Persistent changes in somatostatin and neuropeptide Y mRNA levels but not in growth hormone-releasing hormone mRNA levels in adult rats after intrauterine growth retardation.

A reduction in the availability of oxygen and nutrients across the placenta in the last trimester of pregnancy may lead to intrauterine growth retardation (IUGR) which, in turn, may cause a persistent postnatal growth failure. However, it is unknown whether this persistent growth retardation is centrally mediated through alterations in the components of the growth hormone (GH)-axis. We tested t...

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Leptin Regulates Growth Hormone-Releasing Factor, Somatostatin, and -Melanocyte-Stimulating Hormone But Not Neuropeptide Y Release in Rat Hypothalamus In Vivo: Relation with Growth Hormone Secretion

It is known that leptin, an adipocyte-derived hormone, exerts a stimulatory effect on growth hormone (GH) secretion in various animal species. However, no previous study examined in vivo whether leptin affects the secretion of GH-releasing factor (GRF), somatostatin (SRIH), and some other closely relevant neurohormones in the hypothalamus. Therefore, in this study we investigated the effects of...

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Changes in brain mRNA levels of gonadotropin-releasing hormone, pituitary adenylate cyclase activating polypeptide, and somatostatin during ovulatory luteinizing hormone and growth hormone surges in goldfish.

In goldfish, circulating LH and growth hormone (GH) levels surge at the time of ovulation. In the present study, changes in gene expression of salmon gonadotropin-releasing hormone (sGnRH), chicken GnRH-II (cGnRH-II), somatostatin (SS) and pituitary adenylate cyclase activating polypeptide (PACAP) were analyzed during temperature- and spawning substrate-induced ovulation in goldfish. The result...

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Growth of functional cranial components in rats with intrauterine growth retardation after treatment with growth hormone.

The goal of this study was to analyse the effect of growth hormone (GH) on catch-up growth of functional facial (splanchnocranial) and neurocranial components in rats with intrauterine growth retardation (IUGR). Wistar rats were divided into the following groups: control (C), sham-operated (SH), IUGR, and IUGR + GH. IUGR was surgically induced and GH was administered between 21 and 60 days of a...

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Sleep deprivation increases rat hypothalamic growth hormone-releasing hormone mRNA.

Much evidence indicates that growth hormone-releasing hormone (GHRH) is involved in sleep regulation. We hypothesized that GHRH mRNA would increase and somatostatin (SRIH) mRNA would decrease during sleep deprivation. With the use of RT-PCR and truncated internal standards, rat hypothalamic GHRH mRNA and SRIH mRNA levels were evaluated after sleep deprivation. After 8 or 12 h of sleep deprivati...

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ژورنال

عنوان ژورنال: Journal of Endocrinology

سال: 2001

ISSN: 0022-0795,1479-6805

DOI: 10.1677/joe.0.1680273