{"id":7813,"date":"2026-02-24T06:09:16","date_gmt":"2026-02-24T06:09:16","guid":{"rendered":"https:\/\/pandapeptides.com\/research\/hgh-191aa\/"},"modified":"2026-02-24T06:09:16","modified_gmt":"2026-02-24T06:09:16","slug":"hgh-191aa","status":"publish","type":"page","link":"https:\/\/pandapeptides.com\/es\/research\/hgh-191aa\/","title":{"rendered":"HGH 191AA \u2014 Published Research"},"content":{"rendered":"
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← Back to HGH 191AA product page<\/a><\/p>\n

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Biblioteca de investigaci\u00f3n<\/h3>\n

Published research on human growth hormone \u2014 for educational purposes only<\/p>\n

\nGH Receptor Structure and JAK2\/STAT5 Signaling<\/summary>\n
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Human growth hormone binds to the GH receptor (GHR) as a 1:2 ligand:receptor complex, inducing receptor dimerization. This activates the Janus kinase 2 (JAK2), which phosphorylates the intracellular domain of GHR. Phosphorylated GHR recruits and activates STAT5 (Signal Transducer and Activator of Transcription 5), which dimerizes, translocates to the nucleus, and induces transcription of target genes including IGF-1. The crystal structure of the hGH-GHR complex (PDB: 3HHR) revealed that two distinct receptor-binding sites on hGH (Site 1 and Site 2) mediate sequential receptor engagement.<\/p>\n

de Vos AM et al. “Human growth hormone and extracellular domain of its receptor: crystal structure of the complex.” Science.<\/em> 1992. PubMed<\/a><\/p>\n<\/div>\n<\/details>\n

\nPulsatile GH Secretion Patterns<\/summary>\n
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Endogenous GH secretion follows a pulsatile pattern regulated by the interplay of hypothalamic GHRH (stimulatory) and somatostatin (inhibitory). In humans, the largest GH pulse typically occurs during slow-wave sleep. 24-hour GH profiling studies using deconvolution analysis demonstrated that approximately 70% of daily GH output occurs during nocturnal pulses. Pulse amplitude, frequency, and interpulse nadir levels vary with age, sex, and metabolic status.<\/p>\n

Ho KY et al. “Effects of sex and age on the 24-hour profile of growth hormone secretion in man.” J Clin Endocrinol Metab.<\/em> 1987. PubMed<\/a><\/p>\n<\/div>\n<\/details>\n<\/div>\n

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Disclaimer:<\/strong> All research citations are provided for educational purposes only. These references describe findings from in vitro and animal model studies.<\/p>\n<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

← Back to HGH 191AA product page Research Library Published research on human growth hormone \u2014 for educational purposes only GH Receptor Structure and JAK2\/STAT5 Signaling Human growth hormone binds to the GH receptor (GHR) as a 1:2 ligand:receptor complex, inducing receptor dimerization. This activates the Janus kinase 2 (JAK2), which phosphorylates the intracellular domain […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":7787,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-7813","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages\/7813","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/comments?post=7813"}],"version-history":[{"count":0,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages\/7813\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/pages\/7787"}],"wp:attachment":[{"href":"https:\/\/pandapeptides.com\/es\/wp-json\/wp\/v2\/media?parent=7813"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}