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DOI: 10.1055/a-0723-3544
Early Growth Hormone Intervention Improves Glucose Metabolism in Adult Rats Born Small for Gestational Age
Statement of Financial Support: This work was supported by the National Science Foundation of China (Grant No. 81170733), the medicine and health science technology project of Zhejiang Province (Grant No. 2017177741), and Zhejiang Provincial Natural Science Foundation of China (Grant No. LQ18H070001).Publication History
received 31 May 2018
revised 29 July 2018
accepted 29 August 2018
Publication Date:
26 September 2018 (online)
Abstract
Background Small for gestational age (SGA) due to intrauterine malnourishment is closely related to metabolic syndrome and type 2 diabetes mellitus. Growth Hormone (GH) treatment has been demonstrated to influence metabolic parameters and islet function of SGA individuals. The present study demonstrates the effects of early GH treatment on glucose tolerance and expression of pancreatic duodenal homeobox 1 (Pdx1) of SGA rats during adulthood.
Methods SGA rat model was induced by restricting food intake during pregnancy. GH or normal saline was administered during postnatal days 21–35 of SGA rats and appropriate for gestational age (AGA) rats, respectively.
Results In early adulthood (postnatal day 70), as compared to AGA rats, SGA rats showed: (1) decreased body weight; (2) increased postprandial blood glucose; and (3) down-regulated Pdx1 with increased histone deacetylase (HDAC) and down-regulated histone H3-lysine 4 methyltransferase SET7/9. Exogenous GH administration led to a restoration of body weight and normalized glucose tolerance due to an enhanced Pdx1 expression, accompanied by decreased HDAC and up-regulated SET7/9 in SGA rats in early adulthood.
Conclusion Our results demonstrate positive effects on glucose metabolism by an early and short GH treatment in SGA adulthood.
Supplementary Material
- for this article is available
online at https://doi.org/10.1055/a-0723-3544.
- Supplementary Material
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