TRP channel and cardiovascular disease
Hiroyuki Watanabe1, Manabu Murakami, Takayoshi Ohba
1Second Department of Internal Medicine, Akita University School of Medicine 1-1-1, Hondoh, Akita 010-8543, Japan.
Abstract:
The transient receptor potential (TRP) channel superfamily consists of 28 mammalian cation channels and is expressed in almost every tissue, including the heart and vasculature; most TRP channels are permeable to Ca(2+) and are prime molecular candidates for store-operated channels (SOCs), receptor-operated channels (ROCs), ligand-gated channels (LGCs) and stretch-activated channels (SACs). As these channels act as multifunctional cellular sensors and are involved in several fundamental cell functions such as contraction, proliferation and cell death, investigation of their roles in human disease is very important. This review presents an overview of current knowledge about the pathological role of TRP channels in cardiovascular diseases and highlights some TRP channels for which a role in the diseases can be anticipated. Evidences suggest that up-regulation of TRPC channels is involved in the development of cardiac hypertrophy and heart failure; TRPM4 participates in some features of cardiac arrhythmias; increased expression of TRPC channels is associated with vascular remodeling and pulmonary hypertension; reduced expression or activity of TRPV4 impairs endothelium-dependent vasorelaxation; TRPC3/C4 and TRPM2 act as endothelial redox sensors; and TRPC1, -C4, -C6, -V4, and -M2, have been implicated in endothelial barrier dysfunction. Ultimately, TRP channels will become important novel pharmacological targets for the treatment of human cardiovascular diseases.
Insights
Transient Receptor Potential (TRP) channels are key sensors in cardiovascular cells. This review explores their pathological roles in heart failure, arrhythmias, and vascular diseases, identifying them as potential therapeutic targets.
Area of Science:
- Cardiovascular Physiology
- Molecular Biology
- Pharmacology
Background:
- Transient Receptor Potential (TRP) channels are a superfamily of mammalian cation channels.
- Expressed in cardiac and vascular tissues, they function as cellular sensors involved in contraction, proliferation, and cell death.
- TRP channels are implicated as store-operated, receptor-operated, ligand-gated, and stretch-activated channels.
Purpose of the Study:
- To review the pathological roles of TRP channels in cardiovascular diseases.
- To highlight specific TRP channels involved in cardiac and vascular dysfunction.
- To identify TRP channels as potential pharmacological targets for cardiovascular diseases.
Main Methods:
- Literature review of current knowledge on TRP channels in cardiovascular pathology.
- Analysis of evidence linking specific TRP channel subtypes to disease mechanisms.
- Identification of TRP channels with anticipated roles in cardiovascular diseases.
Main Results:
- TRPC channel upregulation is linked to cardiac hypertrophy and heart failure.
- TRPM4 contributes to cardiac arrhythmias.
- TRPC channels are associated with vascular remodeling and pulmonary hypertension.
- TRPV4 dysfunction impairs vasorelaxation; TRPC3/C4 and TRPM2 are endothelial redox sensors.
- TRPC1, -C4, -C6, -V4, and -M2 are implicated in endothelial barrier dysfunction.
Conclusions:
- TRP channels play significant pathological roles in cardiovascular diseases.
- Specific TRP channel subtypes are crucial in conditions like heart failure, arrhythmias, and vascular dysfunction.
- TRP channels represent promising novel pharmacological targets for treating cardiovascular diseases.
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