PMID- 26058861 OWN - NLM STAT- MEDLINE DCOM- 20151022 LR - 20181220 IS - 1522-1555 (Electronic) IS - 0193-1849 (Print) IS - 0193-1849 (Linking) VI - 309 IP - 3 DP - 2015 Aug 1 TI - Central effects of humanin on hepatic triglyceride secretion. PG - E283-92 LID - 10.1152/ajpendo.00043.2015 [doi] AB - Humanin (HN) is an endogenous mitochondria-associated peptide that has been shown to protect against various Alzheimer's disease-associated insults, myocardial ischemia-reperfusion injury, and reactive oxygen species-induced cell death. We have shown previously that HN improves whole body glucose homeostasis by improving insulin sensitivity and increasing glucose-stimulated insulin secretion (GSIS) from the beta-cells. Here, we report that intraperitoneal treatment with one of HN analogs, HNG, decreases body weight gain, visceral fat, and hepatic triglyceride (TG) accumulation in high-fat diet-fed mice. The decrease in hepatic TG accumulation is due to increased activity of hepatic microsomal triglyceride transfer protein (MTTP) and increased hepatic TG secretion. Both intravenous (iv) and intracerebroventricular (icv) infusion of HNG acutely increase TG secretion from the liver. Vagotomy blocks the effect on both iv and icv HNG on TG secretion, suggesting that the effects of HNG on hepatic TG flux are centrally mediated. Our data suggest that HN is a new player in central regulation of peripheral lipid metabolism. CI - Copyright (c) 2015 the American Physiological Society. FAU - Gong, Zhenwei AU - Gong Z AD - Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; FAU - Su, Kai AU - Su K AD - Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; FAU - Cui, Lingguang AU - Cui L AD - Department of Pediatrics, Children's Hospital at Montefiore, Albert Einstein College of Medicine, Bronx, New York; and. FAU - Tas, Emir AU - Tas E AD - Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; FAU - Zhang, Ting AU - Zhang T AD - Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; FAU - Dong, H Henry AU - Dong HH AD - Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; FAU - Yakar, Shoshana AU - Yakar S AD - David B. Kriser Dental Center, Department of Basic Science and Craniofacial Biology, New York University College of Dentistry, New York, New York. FAU - Muzumdar, Radhika H AU - Muzumdar RH AD - Department of Pediatrics, Children's Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania; radhika.muzumdar@chp.edu. LA - eng GR - R01 DK098437/DK/NIDDK NIH HHS/United States GR - K08-AG-027462/AG/NIA NIH HHS/United States GR - K08-AG-027462-03S1/AG/NIA NIH HHS/United States GR - R01-AG-035114/AG/NIA NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20150609 PL - United States TA - Am J Physiol Endocrinol Metab JT - American journal of physiology. Endocrinology and metabolism JID - 100901226 RN - 0 (Anti-Obesity Agents) RN - 0 (Carrier Proteins) RN - 0 (Central Nervous System Agents) RN - 0 (HNG peptide) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Peptides) RN - 0 (Triglycerides) RN - 0 (humanin) RN - 0 (microsomal triglyceride transfer protein) SB - IM MH - Adiposity/drug effects MH - Animals MH - Anti-Obesity Agents/administration & dosage/pharmacology/therapeutic use MH - Carrier Proteins/agonists/genetics/metabolism MH - Cells, Cultured MH - Central Nervous System Agents/administration & dosage/pharmacology/therapeutic use MH - Diet, High-Fat/adverse effects MH - Hepatocytes/cytology/drug effects/metabolism MH - Infusions, Intravenous MH - Infusions, Intraventricular MH - Intra-Abdominal Fat/drug effects/pathology MH - Intracellular Signaling Peptides and Proteins/administration & dosage/chemistry/*metabolism/pharmacology/therapeutic use MH - Liver/drug effects/*metabolism/pathology MH - Male MH - Mice, Inbred C57BL MH - *Models, Biological MH - Obesity/drug therapy/etiology/*metabolism/pathology MH - Peptides/administration & dosage/pharmacology/therapeutic use MH - Rats, Sprague-Dawley MH - Reproducibility of Results MH - Triglycerides/blood/*metabolism MH - Vagotomy, Truncal PMC - PMC4525112 OTO - NOTNLM OT - hepatic microsomal triglyceride transfer protein OT - humanin OT - hypothalamus OT - triglyceride secretion EDAT- 2015/06/11 06:00 MHDA- 2015/10/23 06:00 PMCR- 2016/08/01 CRDT- 2015/06/11 06:00 PHST- 2015/01/27 00:00 [received] PHST- 2015/06/04 00:00 [accepted] PHST- 2015/06/11 06:00 [entrez] PHST- 2015/06/11 06:00 [pubmed] PHST- 2015/10/23 06:00 [medline] PHST- 2016/08/01 00:00 [pmc-release] AID - ajpendo.00043.2015 [pii] AID - E-00043-2015 [pii] AID - 10.1152/ajpendo.00043.2015 [doi] PST - ppublish SO - Am J Physiol Endocrinol Metab. 2015 Aug 1;309(3):E283-92. doi: 10.1152/ajpendo.00043.2015. Epub 2015 Jun 9.