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Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
Genetic Mutations and Mitochondrial Redox Signaling as Modulating Factors in Hypertrophic Cardiomyopathy: A Scoping
Antonio da Silva Menezes Junior1, Ana Luísa Guedes de França-E-Silva1, Henrique Lima de Oliveira1
1Faculdade de Medicina, Departamento de Clínica Médica, Universidade Federal de Goiás (UFG), Goiânia 74020-020, Brazil.
Insights
Hypertrophic cardiomyopathy (HCM) involves cellular and mitochondrial dysfunction. Targeting these mitochondrial issues offers promising new treatments for this heart condition, as current options are limited.
Area of Science:
- Cardiology
- Mitochondrial Biology
- Genetics
Background:
- Hypertrophic cardiomyopathy (HCM) is a heart disease marked by cellular and metabolic issues.
- Mitochondrial dysfunction is a key factor in HCM pathogenesis, irrespective of the underlying cause.
- Current HCM treatments primarily manage symptoms and prevent complications, lacking disease-modifying therapies.
Purpose of the Study:
- To review the role of mitochondrial dysfunction in hypertrophic cardiomyopathy.
- To explore potential therapeutic strategies targeting mitochondrial pathways for HCM.
- To understand the biomolecular and genetic underpinnings of HCM for novel treatment development.
Main Methods:
- Systematic literature search adhering to PRISMA-ScR guidelines.
- Searches conducted in PubMed, Embase, and Scopus databases up to September 2023.
- Inclusion of bibliographic references from relevant articles.
Main Results:
- Mitochondrial dysfunction is a common pathway in HCM, linked to calcium handling, energy production, and oxidative stress.
- Genetic mutations contribute to HCM, but their direct link to mitochondrial dysfunction requires further clarification.
- Emerging therapies focus on enhancing mitochondrial function, including coenzyme Q, elamipretide, and metabolic interventions like ketosis.
Conclusions:
- Mitochondrial dysfunction is a central mechanism in hypertrophic cardiomyopathy.
- Targeting mitochondrial bioenergetics and metabolic pathways presents a promising avenue for novel HCM therapies.
- Further research into the genetic and molecular basis of HCM is essential for advancing treatment options.
Abstract:
Hypertrophic cardiomyopathy (HCM) is a heart condition characterized by cellular and metabolic dysfunction, with mitochondrial dysfunction playing a crucial role. Although the direct relationship between genetic mutations and mitochondrial dysfunction remains unclear, targeting mitochondrial dysfunction presents promising opportunities for treatment, as there are currently no effective treatments available for HCM. This review adhered to the Preferred Reporting Items for Systematic Reviews and Meta-Analysis Extension for Scoping Reviews guidelines. Searches were conducted in databases such as PubMed, Embase, and Scopus up to September 2023 using "MESH terms". Bibliographic references from pertinent articles were also included. Hypertrophic cardiomyopathy (HCM) is influenced by ionic homeostasis, cardiac tissue remodeling, metabolic balance, genetic mutations, reactive oxygen species regulation, and mitochondrial dysfunction. The latter is a common factor regardless of the cause and is linked to intracellular calcium handling, energetic and oxidative stress, and HCM-induced hypertrophy. Hypertrophic cardiomyopathy treatments focus on symptom management and complication prevention. Targeted therapeutic approaches, such as improving mitochondrial bioenergetics, are being explored. This includes coenzyme Q and elamipretide therapies and metabolic strategies like therapeutic ketosis. Understanding the biomolecular, genetic, and mitochondrial mechanisms underlying HCM is crucial for developing new therapeutic modalities.
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