Related Experiment Video

Updated: Sep 12, 2025

A Model of Cardiac Remodeling Through Constriction of the Abdominal Aorta in Rats
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Published on: December 2, 2016

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Tamsulosin Attenuates Cardiac Hypertrophy via Integrin-Linked Kinase: Possible Mechanisms

Asma S Alonazi1, Anfal F Bin Dayel1, Hetoun A Alomer1

  • 1Department of Pharmacology and Toxicology, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia.

Fundamental & Clinical Pharmacology
|August 8, 2025
PubMed

Insights

Tamsulosin, an alpha 1A-adrenoceptor blocker, reduces cardiac hypertrophy by modulating angiogenesis pathways. This study shows tamsulosin

Area of Science:

  • Cardiovascular Biology
  • Molecular Cardiology
  • Pharmacology

Background:

  • Cardiac hypertrophy can progress to heart failure, with angiogenesis playing a key role.
  • Integrin-linked kinase (ILK) is crucial for cardiac angiogenesis via vascular endothelial growth factor (VEGF).
  • The impact of alpha 1A-adrenoceptor blockade on ILK-mediated angiogenesis is not well understood.

Purpose of the Study:

  • To investigate the effect of tamsulosin, an alpha 1A-adrenoceptor antagonist, on ILK-related angiogenesis in cardiac hypertrophy.
  • To explore the therapeutic potential of targeting alpha 1A-adrenoceptors in preventing cardiac hypertrophy.

Main Methods:

  • Wistar rats were assigned to control, isoproterenol (ISO)-induced hypertrophy, tamsulosin treatment, or combined tamsulosin + ISO groups.
  • Cardiac hypertrophy index, injury markers, and expression of angiogenic/signaling proteins were evaluated.

Main Results:

  • Tamsulosin significantly reduced cardiac hypertrophy and associated biomarkers.
  • Tamsulosin treatment reversed cardiac tissue damage.
  • Modulation of VEGF, eNOS, ILK, p-PI3K, p-Akt, Flt-1, and PECAM-1 expression was observed with tamsulosin.

Conclusions:

  • Inhibiting alpha 1A-adrenoceptors with tamsulosin presents a potential therapeutic strategy against cardiac hypertrophy.
  • This effect is mediated through signal transduction pathways involving ILK, VEGF, eNOS, PI3K, and Akt.
Abstract

Keywords:
angiogenesiscardiac hypertrophyintegrin‐linked kinasevascular endothelial growth factor

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