1
|
Guevara-Aguirre J, Mishra A, Canepa M, Guevara C, Villacres Á, Guevara A, Peña G, Lescano D, Kopchick JJ, Balasubramanian P, Longo VD. Normal or improved cardiovascular risk factors in IGF-I-deficient adults with growth hormone receptor deficiency. Med 2024:S2666-6340(24)00134-X. [PMID: 38677286 DOI: 10.1016/j.medj.2024.03.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/26/2023] [Accepted: 03/28/2024] [Indexed: 04/29/2024]
Abstract
BACKGROUND Human subjects with generalized growth hormone (GH) insensitivity due to GH receptor deficiency (GHRD)/Laron syndrome display a very low incidence of insulin resistance, diabetes, and cancer, as well as delayed age-related cognitive decline. However, the risk of cardiovascular disease (CVD) in these subjects is poorly understood. Here, we have assessed cardiovascular function, damage, and risk factors in GHRD subjects and their relatives. METHODS We measured markers of CVD in two phases: one in a cohort of 30 individuals (GHRD = 16, control relatives = 14) brought to USC (in Los Angeles, CA) and one in a cohort including additional individuals examined in Ecuador (where the subjects live) for a total of 44 individuals (GHRD = 21, control relatives = 23). Data were collected on GHRD and control groups living in similar geographical locations and sharing comparable environmental and socio-economic circumstances. RESULTS Compared to controls, GHRD subjects displayed lower serum glucose, insulin, blood pressure, smaller cardiac dimensions, similar pulse wave velocity, lower carotid artery intima-media thickness, lower creatinine, and a non-significant but major reduction in the portion of subjects with carotid atherosclerotic plaques (7% GHRDs vs. 36%, Controls p = 0.1333) despite elevated low-density lipoprotein cholesterol levels. CONCLUSION The current study indicates that individuals with GHRD have normal or improved levels of cardiovascular disease risk factors as compared to their relatives. FUNDING This study was funded in part by NIH/NIA grant P01 AG034906 to V.D.L.
Collapse
Affiliation(s)
- Jaime Guevara-Aguirre
- College of Medicine, Universidad San Francisco de Quito, Quito, Ecuador; Instituto de Endocrinología IEMYR, Quito, Ecuador; Maastricht University, Maastricht, the Netherlands.
| | - Amrendra Mishra
- Longevity Institute, Davis School of Gerontology and Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA; Department of Life Sciences, GITAM (Deemed to be University), Bengaluru, India
| | - Marco Canepa
- Cardiovascular Unit, Ospedale Policlinico San Martino IRCCS, Genova, Italy; Department of Internal Medicine and Medical Specialities, University of Genova, Genova, Italy
| | - Carolina Guevara
- College of Medicine, Universidad San Francisco de Quito, Quito, Ecuador; Instituto de Endocrinología IEMYR, Quito, Ecuador
| | - Álvaro Villacres
- College of Medicine, Universidad San Francisco de Quito, Quito, Ecuador
| | | | - Gabriela Peña
- College of Medicine, Universidad San Francisco de Quito, Quito, Ecuador
| | - Daniela Lescano
- College of Medicine, Universidad San Francisco de Quito, Quito, Ecuador
| | - John J Kopchick
- Department of Biomedical Sciences, Heritage College of Osteopathic Medicine and Edison Biotechnology Institute, Ohio University, Athens, OH, USA
| | - Priya Balasubramanian
- Longevity Institute, Davis School of Gerontology and Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA
| | - Valter D Longo
- Longevity Institute, Davis School of Gerontology and Department of Biological Sciences, University of Southern California, Los Angeles, CA, USA; IFOM, AIRC Institute of Molecular Oncology, Milan, Italy.
| |
Collapse
|
2
|
Willis MS, Min JN, Wang S, McDonough H, Lockyer P, Wadosky KM, Patterson C. Carboxyl terminus of Hsp70-interacting protein (CHIP) is required to modulate cardiac hypertrophy and attenuate autophagy during exercise. Cell Biochem Funct 2013; 31:724-35. [PMID: 23553918 DOI: 10.1002/cbf.2962] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 01/18/2013] [Accepted: 01/22/2013] [Indexed: 12/20/2022]
Abstract
The carboxyl terminus of Hsp70-interacting protein (CHIP) is a ubiquitin ligase/cochaperone critical for the maintenance of cardiac function. Mice lacking CHIP (CHIP-/-) suffer decreased survival, enhanced myocardial injury and increased arrhythmias compared with wild-type controls following challenge with cardiac ischaemia reperfusion injury. Recent evidence implicates a role for CHIP in chaperone-assisted selective autophagy, a process that is associated with exercise-induced cardioprotection. To determine whether CHIP is involved in cardiac autophagy, we challenged CHIP-/- mice with voluntary exercise. CHIP-/- mice respond to exercise with an enhanced autophagic response that is associated with an exaggerated cardiac hypertrophy phenotype. No impairment of function was identified in the CHIP-/- mice by serial echocardiography over the 5 weeks of running, indicating that the cardiac hypertrophy was physiologic not pathologic in nature. It was further determined that CHIP plays a role in inhibiting Akt signalling and autophagy determined by autophagic flux in cardiomyocytes and in the intact heart. Taken together, cardiac CHIP appears to play a role in regulating autophagy during the development of cardiac hypertrophy, possibly by its role in supporting Akt signalling, induced by voluntary running in vivo.
Collapse
Affiliation(s)
- Monte S Willis
- McAllister Heart Institute, University of North Carolina, Chapel Hill, NC, USA; Department of Pathology and Laboratory Medicine, University of North Carolina, Chapel Hill, NC, USA
| | | | | | | | | | | | | |
Collapse
|