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[The role of mast cells in myocardial fibrosis in SHRsp]

M Wang1, T Wang, L Liu

  • 1China-Japan Friendship Hospital, Beijing 100029.

Zhonghua Bing Li Xue Za Zhi = Chinese Journal of Pathology
|March 14, 2001
PubMed

Insights

Mast cells (MCs) are implicated in hypertensive myocardial fibrosis. Increased MC counts correlated with fibrosis markers in spontaneously hypertensive rats (SHRsp), suggesting their role in this condition.

Area of Science:

  • Cardiovascular Research
  • Cell Biology
  • Pathology

Context:

  • Hypertensive myocardial fibrosis is a significant complication of hypertension.
  • Mast cells are immune cells known to be involved in inflammatory and fibrotic processes.

Purpose:

  • To investigate the specific role of mast cells (MCs) in the development of myocardial fibrosis in spontaneously hypertensive rats (SHRsp).

Summary:

  • Mast cell counts and proliferating cell nuclear antigen-positive cells (PCNAP) were significantly elevated in SHRsp compared to controls.
  • Mast cell counts showed positive correlations with interstitial collagen volume fraction (ICVF), perivascular collagen area/vascular lumenal cross area (PVCA/VLCA), and PCNAP.
  • Electron microscopy revealed mast cell degranulation between interstitial collagen fibers, supporting their involvement in fibrosis.

Impact:

  • This study provides evidence that mast cells contribute to hypertensive myocardial fibrosis.
  • Understanding the role of mast cells may open new therapeutic avenues for treating hypertensive heart disease.
Abstract

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