Cardiovascular autonomic neuropathy in diabetes

Takahide Arai, Masaki Ieda, Keiichi Fukuda

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The heart is extensively innervated, and its electrical and mechanical performance is controlled by the autonomic nervous system. The cardiac nervous system comprises the sympathetic, parasympathetic, and sensory nervous systems that together regulate heart function on demand. The density of cardiac innervation varies in diseased hearts, leading to unbalanced neural activation and lethal arrhythmia. Diabetic sensory neuropathy causes silent myocardial ischemia, which is characterized by loss of pain perception during myocardial ischemia and is a major cause of sudden cardiac death in diabetes mellitus (DM). Despite its clinical importance, the mechanisms underlying the control and regulation of cardiac innervation remain poorly understood. Nerve growth factor (NGF), a potent chemoattractant, is highly expressed in cardiomyocytes during development. In contrast, Sema3a, a neural chemorepellent, is highly expressed in the subendocardium of early-stage embryos, but is suppressed during development. The balance between NGF and Sema3a expression leads to epicardial to endocardial transmural sympathetic innervation patterning. Downregulation of NGF leads to diabetic neuropathy, whereas NGF supplementation rescues silent myocardial ischemia in DM. In this review, we summarize the molecular mechanisms underlying cardiac autonomic innervation, with a particular focus on DM and the clinical implications of cardiac autonomic neuropathy.

Original languageEnglish
Title of host publicationDiabetic Cardiomyopathy
Subtitle of host publicationBiochemical and Molecular Mechanisms
PublisherSpringer New York
Pages239-248
Number of pages10
ISBN (Electronic)9781461493174
ISBN (Print)9781461493167
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • Autonomic neuropathy
  • Cardiac nervous system
  • Diabetes mellitus
  • Nerve growth factor
  • Sema3a

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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    Arai, T., Ieda, M., & Fukuda, K. (2014). Cardiovascular autonomic neuropathy in diabetes. In Diabetic Cardiomyopathy: Biochemical and Molecular Mechanisms (pp. 239-248). Springer New York. https://doi.org/10.1007/978-1-4614-9317-4_14