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Edavettal JM, Harris NR, Cohen SE, Paloczi J, Chandrasekar B, Gardner JD. Abstinence Restores Cardiac Function in Mice with Established Alcohol-Induced Cardiomyopathy. Cells 2023; 12:2783. [PMID: 38132102 PMCID: PMC10742080 DOI: 10.3390/cells12242783] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 11/30/2023] [Accepted: 12/05/2023] [Indexed: 12/23/2023] Open
Abstract
Alcohol-induced cardiomyopathy (ACM) has a poor prognosis with up to a 50% chance of death within four years of diagnosis. There are limited studies investigating the potential of abstinence for promoting repair after alcohol-induced cardiac damage, particularly in a controlled preclinical study design. Here, we developed an exposure protocol that led to significant decreases in cardiac function in C57BL6/J mice within 30 days; dP/dt max decreased in the mice fed alcohol for 30 days (8054 ± 664.5 mmHg/s compared to control mice: 11,188 ± 724.2 mmHg/s, p < 0.01), and the dP/dt min decreased, as well (-7711 ± 561 mmHg/s compared to control mice: -10,147 ± 448.2 mmHg/s, p < 0.01). Quantitative PCR was used to investigate inflammatory and fibrotic biomarkers, while histology was used to depict overt changes in cardiac fibrosis. We observed a complete recovery of function after abstinence (dP/dt max increased from 8054 ± 664 mmHg/s at 30 days to 11,967 ± 449 mmHg/s after abstinence, p < 0.01); further, both inflammatory and fibrotic biomarkers decreased after abstinence. These results lay the groundwork for future investigation of the molecular mechanisms underlying recovery from alcohol-induced damage in the heart.
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Affiliation(s)
- Joshua M. Edavettal
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Nicholas R. Harris
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Sarah E. Cohen
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Janos Paloczi
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
| | - Bysani Chandrasekar
- Department of Medicine, University of Missouri School of Medicine, Columbia, MO 65212, USA;
- Department of Medical Pharmacology and Physiology, Dalton Cardiovascular Research Center, and Harry S. Truman Memorial Veterans Hospital, Columbia, MO 65212, USA
| | - Jason D. Gardner
- Department of Physiology, LSU Health Sciences Center—New Orleans, New Orleans, LA 70112, USA; (J.M.E.); (N.R.H.); (S.E.C.); (J.P.)
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Xue Q, Zhang T, Zhu R, Qian Y, Dong X, Mo L, Jiang Y. Inhibition of Ceramide Synthesis Attenuates Chronic Ethanol Induced Cardiotoxicity by Restoring Lysosomal Function and Reducing Necroptosis. Alcohol Alcohol 2023; 58:164-174. [PMID: 36562604 DOI: 10.1093/alcalc/agac067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 11/21/2022] [Accepted: 11/21/2022] [Indexed: 12/24/2022] Open
Abstract
AIMS Chronic alcohol misuse could cause alcoholic cardiomyopathy (ACM), and the specific mechanisms remained largely unknown. In this study, we aimed to explore the effects of endogenous ceramides on chronic ethanol-induced myocardial injury or cell loss (e.g. necroptosis). METHODS We established chronic alcohol intoxication models in vivo (male C57BL/6 mice) and in vitro (H9c2 cardiomyoblasts). The ceramide profiles were analyzed in mice myocardium and cultured cardiomyocytes. Further research on the role of ceramides and underlying signaling pathways was carried out in H9c2 cells. RESULTS AND CONCLUSIONS The ceramide profiles analysis revealed increased long and very long-chain ceramides in alcoholic myocardium and ethanol-treated cardiomyocytes. Next, we proved that endogenous ceramide inhibition could reduce necroptosis and alleviate cardiomyocytes injury as suggested by decreased levels of p-RIPK1, p-RIPK3 and p-MLKL proteins and cardiac injury factors expression. Furthermore, we found that lysosomal dysfunction also contributed to alcohol-induced cardiac damage and inhibiting ceramide biosynthesis could repaired this to some extent. Cells studies with exogenous C6 ceramide confirmed the pleotropic roles of ceramide in myocardial damage by causing both necroptosis and lysosomal dysfunction. Finally, our data suggested that lysosomal dysfunction could sensitize cardiomyocytes to induction of necroptosis due to the restriction on degradation of RIPK1/RIPK3 proteins. In conclusion, chronic ethanol treatment boosted myocardial ceramide synthesis in animal hearts and cultured cardiomyocytes. Moreover, ceramides exerted crucial roles in the intrinsic signaling pathways of alcohol-induced cardiotoxicity. Targeting ceramide biosynthesis to simultaneously attenuate necroptosis and lysosomal dysfunction might be a novel strategy for preventing alcoholic cardiotoxicity.
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Affiliation(s)
- Qiupeng Xue
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai 200032, China
| | - Tianyi Zhang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai 200032, China
| | - Rongzhe Zhu
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai 200032, China
| | - Yile Qian
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai 200032, China
| | - Xiaoru Dong
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai 200032, China
| | - Lingjie Mo
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai 200032, China
| | - Yan Jiang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai 200032, China
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Manivannan A, Schou M, Monahan KM, Helm R, Ko D, Fosbøl E, Køber L, Gustafsson F, Gislason GH, Torp-Pedersen C, Andersson C. Prognostic Importance of Atrial Fibrillation and Anticoagulation in Alcoholic Versus Dilated Cardiomyopathy. Alcohol Alcohol 2023; 58:159-163. [PMID: 36426877 DOI: 10.1093/alcalc/agac060] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 09/05/2022] [Accepted: 10/23/2022] [Indexed: 11/27/2022] Open
Abstract
AIMS Limited data exist to describe the prognostic impact of atrial fibrillation (AF) and oral anticoagulation on patients with alcoholic cardiomyopathy (ACM) compared with dilated cardiomyopathy (DCM) and were investigated in this study. METHODS Using Danish nationwide registries, a cohort analysis was conducted to assess the prognostic differences for patients with a first diagnosis of ACM versus DCM with and without AF 1994-2018 (followed until end 2019). Our study also assessed differences in mortality following initiation of anticoagulation in both populations. RESULTS Totally, 1237 patients with ACM (33% with AF) and 17,211 individuals with DCM (33% with AF) were included. Those with ACM were more often men (89 versus 71%) and younger than patients with DCM (mean age 56 versus 64 years). Cumulative 5-year mortality was greater among patients with ACM, compared with DCM, regardless of AF (ACM with AF 49% [95% CI: 44-54%], ACM without AF 48% [45-53%], DCM with AF 41% [39-42%], DCM without AF 30% [29-31%], P < 0.0001). The prognosis associated with AF was statistically significantly different in people with ACM and DCM (adjusted hazards ratio 0.85 [95% CI: 0.74-0.98] versus 1.04 [1.00-1.09] in ACM and DCM, P < 0.0001). The mortality associated with oral anticoagulation was similar in ACM and DCM (hazards ratio 0.81 [0.61-1.07] versus 0.87 [0.80-0.94], P = 0.49). CONCLUSIONS Patients with ACM had a worse prognosis when compared with patients with DCM, but this did not appear to be driven by AF. Patients with ACM were observed to have similar associated risk benefits of oral anticoagulation as DCM.
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Affiliation(s)
- Alan Manivannan
- Department of Medicine, Section of Internal Medicine, Boston University Medical Center, Boston, MA, USA
| | - Morten Schou
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Kevin M Monahan
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Robert Helm
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Darae Ko
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Herlev, Denmark
| | - Emil Fosbøl
- Department of Cardiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Lars Køber
- Department of Cardiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Finn Gustafsson
- Department of Cardiology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Gunnar H Gislason
- Department of Cardiology, Herlev and Gentofte Hospital, University of Copenhagen, Gentofte, Denmark
- The Danish Heart Foundation, Copenhagen, Denmark
| | - Christian Torp-Pedersen
- Department of Cardiology, Nordsjaellands Hospital, Hillerød, Denmark
- Department of Public Health, University of Copenhagen, Copenhagen, Denmark
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