Apoptosis induction and inhibition of cellular proliferation by angiotensin II: Possible implication and perspectives

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Abstract

The renin-angiotensin system plays a pivotal role in the regulation of fluid, electrolyte metabolism and blood pressure. Molecular cloning and pharmacological studies have defined two major classes of Angiotensin II (Ang II) receptors, designated AT1 and AT2. Recently, it has been well recognized that Ang II, beside its classical physiological actions, is a profibrogenic peptide and displays characteristics of a growth factor. The emerging picture suggests that angiotensin receptor subtypes exert opposing features in many aspects of their biological function, most importantly in cellular growth and proliferation. Accordingly, the proliferative and/or growth-promoting effects of Ang II are thought to be mediated by AT1 receptor, whereas the AT2 receptor subtype may have growth-inhibitory properties. The novel finding that Ang II is able to induce apoptosis by AT2 receptors in diverse cell types is of great scientific interest, as recent studies revealed a role for apoptosis as a deliberate form of cell death in the pathogenesis of various cardiovascular diseases such as heart failure and vascular remodeling. Furthermore apoptotic cell death might occur during the development of progressive glomerolosclerosis. It is tempting to speculate that autocrine-paracrine vasoactive substances such as Ang II might regulate these apoptotic processes during pathogenic conditions.

Original languageEnglish
Pages (from-to)5-24
Number of pages20
JournalActa Physiologica Hungarica
Volume87
Issue number1
Publication statusPublished - 2000

Fingerprint

Angiotensin II
Cell Proliferation
Apoptosis
Angiotensin Receptors
Cell Death
Growth
Molecular Cloning
Renin-Angiotensin System
Electrolytes
Intercellular Signaling Peptides and Proteins
Cardiovascular Diseases
Heart Failure
Pharmacology
Blood Pressure
Peptides

Keywords

  • Angiotensin II
  • Apoptosis
  • AT and AT receptors
  • Glomerulosclerosis
  • Heart failure
  • Proliferation

ASJC Scopus subject areas

  • Physiology

Cite this

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