Angiotensin II and retinal pericytes migration

J. A. Nadal, G. M. Scicli, L. A. Carbini, Julian J Nussbaum, A. G. Scicli

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Angiotensin II (Ang II) appears to participate in the regulation of neovascularization processes in the retina. Migration of perimural cells such as pericytes plays a key role in regulation of angiogenesis. We hypothesize that Ang II stimulates migration of retina pericytes. For this we studied the effects of Ang II on migration of bovine retinal pericytes using modified Boyden chambers and collagen IV-covered polyester membranes. Ang II stimulated migration of pericytes by 54.8 ± 9.7% (n = 10, p < 0.001). This effect was blocked by an AT1 receptor antagonist (Losartan) but not by an AT1 receptor antagonist (PD123319). We determined using checkerboard assays (n = 3) that Ang II induces migration of pericytes by chemotaxis (gradient-dependent), in opposition to chemokinesis (nondirected). Thus, Ang II via its AT1 receptor acts as a chemotactic factor and stimulates migration of retina microvascular pericytes. This effect may contribute to Ang II-induced regulation of neovascularization processes in the retina.

Original languageEnglish (US)
Pages (from-to)382-385
Number of pages4
JournalBiochemical and Biophysical Research Communications
Volume266
Issue number2
DOIs
StatePublished - Dec 20 1999
Externally publishedYes

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Pericytes
Angiotensin II
Retina
Polyesters
Losartan
Chemotactic Factors
Chemotaxis
Cell Movement
Assays
Collagen
Cells
Membranes

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Angiotensin II and retinal pericytes migration. / Nadal, J. A.; Scicli, G. M.; Carbini, L. A.; Nussbaum, Julian J; Scicli, A. G.

In: Biochemical and Biophysical Research Communications, Vol. 266, No. 2, 20.12.1999, p. 382-385.

Research output: Contribution to journalArticle

Nadal, J. A. ; Scicli, G. M. ; Carbini, L. A. ; Nussbaum, Julian J ; Scicli, A. G. / Angiotensin II and retinal pericytes migration. In: Biochemical and Biophysical Research Communications. 1999 ; Vol. 266, No. 2. pp. 382-385.
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