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| http://purl.uniprot.org/citations/32286880 | http://www.w3.org/2000/01/rdf-schema#comment | "Lack of GABAB receptors in GABAB1 knockout mice decreases neonatal ARC kisspeptin 1 (Kiss1) expression in the arcuate nucleus of the hypothalamus (ARC) in females, which show impaired reproduction as adults. Our aim was to selectively impair GABAB signaling during a short postnatal period to evaluate its impact on the reproductive system. Neonatal male and female mice were injected with the GABAB antagonist CGP 55845 (CGP, 1 mg/kg body wt sc) or saline from postnatal day 2 (PND2) to PND6, three times per day (8 AM, 1 PM, and 6 PM). One group was killed on PND6 for collection of blood samples (hormones by radioimmunoassay), brains for gene expression in the anteroventral periventricular nucleus-periventricular nucleus continuum (AVPV/PeN), and ARC micropunches [quantitative PCR (qPCR)] and gonads for qPCR, hormone contents, and histology. A second group of mice was injected with CGP (1 mg/kg body wt sc) or saline from PND2 to PND6, three times per day (8 AM, 1 PM, and 6 PM), and left to grow to adulthood. We measured body weight during development and parameters of sexual differentiation, puberty onset, and estrous cycles. Adult mice were killed, and trunk blood (hormones), brains for qPCR, and gonads for qPCR and hormone contents were obtained. Our most important findings on PND6 include the CGP-induced decrease in ARC Kiss1 and increase in neurokinin B (Tac2) in both sexes; the decrease in AVPV/PeN tyrosine hydroxylase (Th) only in females; the increase in gonad estradiol content in both sexes; and the increase in primordial follicles and decrease in primary and secondary follicles. Neonatally CGP-treated adults showed decreased ARC Kiss1 and ARC gonadotropin-releasing hormone (Gnrh1) and increased ARC glutamic acid decarboxylase 67 (Gad1) only in males; increased ARC GABAB receptor subunit 1 (Gabbr1) in both sexes; and decreased AVPV/PeN Th only in females. We demonstrate that ARC Kiss1 expression is chronically downregulated in males and that the normal sex difference in AVPV/PeN Th expression is abolished. In conclusion, neonatal GABAergic input through GABAB receptors shapes gene expression of factors critical to reproduction."xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.org/dc/terms/identifier | "doi:10.1152/ajpendo.00547.2019"xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/author | "Di Giorgio N.P."xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/author | "Lux-Lantos V."xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/author | "Libertun C."xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/author | "Bizzozzero-Hiriart M."xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/date | "2020"xsd:gYear |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/name | "Am J Physiol Endocrinol Metab"xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/pages | "E901-E919"xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/title | "GABAergic input through GABAB receptors is necessary during a perinatal window to shape gene expression of factors critical to reproduction such as Kiss1."xsd:string |
| http://purl.uniprot.org/citations/32286880 | http://purl.uniprot.org/core/volume | "318"xsd:string |
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