Skip to main content

Inhibitory effects of cariporide on LPC-induced expression of ICAM-1 and adhesion of monocytes to smooth muscle cells in vitro

Buy Article:

$51.00 plus tax (Refund Policy)

Abstract:

Abstract

Aim: To explore the effects of cariporide on the expression of intercellular adhesion molecule-1 (ICAM-1) and the adhesion of monocytes to vascular smooth muscle cells (SMC) in vitro.Methods: Monocytes were isolated from human peripheral blood by the Ficoll-Hypaque method. The expression of ICAM-1 in SMC was detected by ELISA. The adhesion of monocytes to SMC was stimulated by lysophosphatidylcholine (LPC). The adhesion ratio of monocytes was assayed by measuring protein contents. The intracellular pH ([pH]i) of SMC was measured with 2′,7′-bis(2-carboxyethyl)-5,6-carboxyfluorescein (BCECF). Results: Preincubation of SMC with LPC alone (5 g/mL) for 4 h markedly enhanced the expression of ICAM-1 in SMC and the rate of the adhesion of monocytes to SMC in a concentration-dependent and time-related manner. LPC simultaneously also induced an increase of [pH]i value in SMC. Cariporide concentration-dependently reduced the adhesion ratio of monocytes to SMC and the expression of ICAM-1 in SMC induced by LPC. The inhibitory effects of cariporide on the expression of ICAM-1 in SMC and the adhesion of monocytes to SMC also were associated with blocking LPC-induced elevation of the [pH]i value in SMC. Conclusion: LPC-induced monocyte-SMC adhesion may be mediated via activation of the Na+/H+ (NHE) exchanger. The action mechanism of cariporide may be related with inhibition of activation of the Na+/H+ exchanger of plasma membranes and ICAM-1 expression on the surface of SMC induced by LPC.

Keywords: Na+/H+ exchanger; cariporide; intercellular adhesion molecule-1; lysophosphatidylcholine; monocyte; smooth muscle cells

Document Type: Research Article

DOI: https://doi.org/10.1111/j.1745-7254.2006.00412.x

Affiliations: Department of Pharmacology, Pharmaceutical College, Central South University, Changsha 410078, China

Publication date: 2006-10-01

  • Access Key
  • Free ContentFree content
  • Partial Free ContentPartial Free content
  • New ContentNew content
  • Open Access ContentOpen access content
  • Partial Open Access ContentPartial Open access content
  • Subscribed ContentSubscribed content
  • Partial Subscribed ContentPartial Subscribed content
  • Free Trial ContentFree trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more