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Ahmadieh S, Goo B, Zarzour A, Kim D, Shi H, Veerapaneni P, Chouhaita R, Yiew NKH, Dominguez Gonzalez C, Chakravartty A, Pennoyer J, Hassan N, Benson TW, Ogbi M, Fulton DJ, Lee R, Rice RD, Hilton LR, Lei Y, Lu XY, Chen W, Kim HW, Weintraub NL. Impact of housing temperature on adipose tissue HDAC9 expression and adipogenic differentiation in high fat-fed mice. Obesity (Silver Spring) 2024; 32:107-119. [PMID: 37869960 PMCID: PMC10840750 DOI: 10.1002/oby.23924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 08/15/2023] [Accepted: 08/22/2023] [Indexed: 10/24/2023]
Abstract
OBJECTIVE Impaired adipogenic differentiation exacerbates metabolic disease in obesity. This study reported that high-fat diet (HFD)-fed mice housed at thermoneutrality exhibited impaired adipogenic differentiation, attributed to increased expression of histone deacetylase 9 (HDAC9). However, the impact of HFD on adipogenic differentiation is reportedly variable, possibly reflecting divergent environmental conditions such as housing temperature. METHODS C57BL/6J (wild-type [WT]) mice were housed at either thermoneutral (28-30°C) or ambient (20-22°C) temperature and fed HFD or chow diet (CD) for 12 weeks. For acute exposure experiments, WT or transient receptor potential cation channel subfamily M member 8 (TRPM8) knockout mice housed under thermoneutrality were acutely exposed to ambient temperature for 6 to 24 h. RESULTS WT mice fed HFD and housed at thermoneutrality, compared with ambient temperature, gained more weight despite reduced food intake. They likewise exhibited increased inguinal adipose tissue HDAC9 expression and reduced adipogenic differentiation in vitro and in vivo compared with CD-fed mice. Conversely, HFD-fed mice housed at ambient temperature exhibited minimal change in adipose HDAC9 expression or adipogenic differentiation. Acute exposure of WT mice to ambient temperature reduced adipose HDAC9 expression independent of sympathetic β-adrenergic signaling via a TRPM8-dependent mechanism. CONCLUSIONS Adipose HDAC9 expression is temperature sensitive, regulating adipogenic differentiation in HFD-fed mice housed under thermoneutrality.
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Affiliation(s)
- Samah Ahmadieh
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Brandee Goo
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Abdalrahman Zarzour
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - David Kim
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Hong Shi
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Praneet Veerapaneni
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Ronnie Chouhaita
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Nicole K H Yiew
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Carla Dominguez Gonzalez
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Akash Chakravartty
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - James Pennoyer
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Nazeera Hassan
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Tyler W Benson
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Mourad Ogbi
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - David J Fulton
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Department of Pharmacology and Toxicology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Richard Lee
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Robert D Rice
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Lisa R Hilton
- Department of Surgery, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Yun Lei
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Xin-Yun Lu
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Weiqin Chen
- Department of Physiology, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Ha Won Kim
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
| | - Neal L Weintraub
- Department of Medicine, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
- Vascular Biology Center, Medical College of Georgia at Augusta University, Augusta, Georgia, USA
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Pennoyer J, Bykhovsky M, Sohinki D, Mallard R, Berman AE. Successful Catheter Ablation of Two Macro-reentrant Atrial Tachycardias in a Patient with Congenitally Corrected Transposition of the Great Arteries: A Case Report. J Innov Card Rhythm Manag 2020; 11:4273-4280. [PMID: 33123416 PMCID: PMC7588239 DOI: 10.19102/icrm.2020.111005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 05/27/2020] [Indexed: 01/23/2023] Open
Abstract
Adults with congenital heart disease represent a complex and growing patient population. By virtue of their variant anatomy and the complex surgical repair often required in infancy, these patients are at risk of developing unique atrial and ventricular arrhythmias throughout their lifetimes. Electrophysiologists involved in the care of these patients should have a detailed understanding of their underlying anatomy and any prior surgical procedures to guide procedural planning and should have knowledge of the range of possible arrhythmia mechanisms that may differ from patients without structural heart disease. Despite this complexity, standard mapping techniques and electrophysiologic maneuvers may still be used to elucidate arrhythmia mechanisms, map tachycardia circuits, and guide catheter ablation. We report a case of two different macroreentrant right atrial tachycardias that were successfully ablated in a patient with congenitally-corrected transposition of the great arteries.
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Affiliation(s)
- James Pennoyer
- Division of Adult Cardiology, Medical College of Georgia, Augusta, GA, USA
| | - Michael Bykhovsky
- Division of Pediatric Cardiology, Medical College of Georgia, Augusta, GA, USA
| | - Daniel Sohinki
- Division of Adult Cardiology, Medical College of Georgia, Augusta, GA, USA
| | - Rachel Mallard
- Division of Adult Cardiology, Medical College of Georgia, Augusta, GA, USA
| | - Adam E Berman
- Division of Adult Cardiology, Medical College of Georgia, Augusta, GA, USA.,Division of Pediatric Cardiology, Medical College of Georgia, Augusta, GA, USA
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