PMID- 37189668 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230519 IS - 2227-9059 (Print) IS - 2227-9059 (Electronic) IS - 2227-9059 (Linking) VI - 11 IP - 4 DP - 2023 Mar 29 TI - Short-Term Growth Hormone Administration Mediates Hepatic Fatty Acid Uptake and De Novo Lipogenesis Gene Expression in Obese Rats. LID - 10.3390/biomedicines11041050 [doi] LID - 1050 AB - Obesity has been linked to metabolic syndrome, type 2 diabetes, and non-alcoholic fatty liver disease (NAFLD). Obesity causes a decrease in growth hormone (GH) levels and an increase in insulin levels. Long-term GH treatment increased lipolytic activity as opposed to decreasing insulin sensitivity. Nonetheless, it is possible that short-term GH administration had no impact on insulin sensitivity. In this study, the effect of short-term GH administration on liver lipid metabolism and the effector molecules of GH and insulin receptors were investigated in diet-induced obesity (DIO) rats. Recombinant human GH (1 mg/kg) was then administered for 3 days. Livers were collected to determine the hepatic mRNA expression and protein levels involved in lipid metabolism. The expression of GH and insulin receptor effector proteins was investigated. In DIO rats, short-term GH administration significantly reduced hepatic fatty acid synthase (FASN) and cluster of differentiation 36 (CD36) mRNA expression while increasing carnitine palmitoyltransferase 1A (CPT1A) mRNA expression. Short-term GH administration reduced hepatic FAS protein levels and downregulated gene transcription of hepatic fatty acid uptake and lipogenesis, while increasing fatty acid oxidation in DIO rats. DIO rats had lower hepatic JAK2 protein levels but higher IRS-1 levels than control rats due to hyperinsulinemia. Our findings suggest that short-term GH supplementation improves liver lipid metabolism and may slow the progression of NAFLD, where GH acts as the transcriptional regulator of related genes. FAU - Likitnukul, Sutharinee AU - Likitnukul S AUID- ORCID: 0000-0002-2305-9107 AD - Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. FAU - Thammacharoen, Sumpun AU - Thammacharoen S AUID- ORCID: 0000-0002-5500-1639 AD - Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok 10330, Thailand. FAU - Sriwatananukulkit, Orada AU - Sriwatananukulkit O AD - Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. FAU - Duangtha, Chanathip AU - Duangtha C AD - Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. FAU - Hemstapat, Ruedee AU - Hemstapat R AUID- ORCID: 0000-0003-4939-7937 AD - Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. FAU - Sunrat, Chotchanit AU - Sunrat C AD - Department of Physiology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. FAU - Mangmool, Supachoke AU - Mangmool S AUID- ORCID: 0000-0003-3223-1551 AD - Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. FAU - Pinthong, Darawan AU - Pinthong D AD - Department of Pharmacology, Faculty of Science, Mahidol University, Bangkok 10400, Thailand. LA - eng GR - The Central Instrument Facility (CIF) and Center of Nanoimaging (CNI), Faculty of Science, Mahidol University/ GR - Mahidol University/ PT - Journal Article DEP - 20230329 PL - Switzerland TA - Biomedicines JT - Biomedicines JID - 101691304 PMC - PMC10135739 OTO - NOTNLM OT - DIO rats OT - GH OT - NAFLD OT - hepatic lipid metabolism OT - insulin resistance COIS- The authors declare no conflict of interest. EDAT- 2023/05/16 06:42 MHDA- 2023/05/16 06:43 PMCR- 2023/03/29 CRDT- 2023/05/16 01:10 PHST- 2023/02/20 00:00 [received] PHST- 2023/03/22 00:00 [revised] PHST- 2023/03/23 00:00 [accepted] PHST- 2023/05/16 06:43 [medline] PHST- 2023/05/16 06:42 [pubmed] PHST- 2023/05/16 01:10 [entrez] PHST- 2023/03/29 00:00 [pmc-release] AID - biomedicines11041050 [pii] AID - biomedicines-11-01050 [pii] AID - 10.3390/biomedicines11041050 [doi] PST - epublish SO - Biomedicines. 2023 Mar 29;11(4):1050. doi: 10.3390/biomedicines11041050.