Impaired leukocyte-endothelial cell interaction in spontaneously hypertensive rats

Hidekazu Suzuki, Geert W. Schmid-Schönbein, Makoto Suematsu, Frank A. DeLano, Michael J. Forrest, Masayuki Miyasaka, Benjamin W. Zweifach

研究成果: Article査読

63 被引用数 (Scopus)


Hypertension is associated with a progressive organ injury whose etiology remains largely speculative. An increasing database shows that activated leukocytes, while affording an important immune protection, may be a contributing factor to several of the pathogenetic features of the hypertension syndrome. The purpose of this study was to determine the extent to which the glucocorticoid pathway may be involved in the atypical kinetics of leukocytes in spontaneously hypertensive rats (SHR) compared with normotensive Wistar-Kyoto (WKY) rats. The typical venular leukocyte adhesion induced by histamine application was significantly lower in SHR, and a comparison of normalized leukocyte rolling velocity (V(WBC)/V(RBC)) showed the values to be significantly higher in SHR relative to WKY controls. This abnormal trend in adherent leukocyte numbers and in V(WBC)/V(RBC) values could be counteracted when SHR were pretreated with RU 486, a synthetic glucocorticoid inhibitor, and restored to the levels observed in WKY rats. Anti-P-selectin monoclonal antibody (PB1.3) attenuated in SHR and WKY rats the increment of adherent leukocyte numbers as well as the decrement of V(WBC)/V(RBC) value that developed under combined histamine and RU 486 superfusion. Furthermore, an anti-intercellular adhesion molecule-1 monoclonal antibody (1A29) served to attenuate the increment of adherent leukocyte number induced by a combination of histamine and RU 486 superfusion in WKY rats and SHR. The results indicate that the deficient leukocyte- endothelial cell interaction in SHR can be circumvented by a glucocorticoid inhibitor.

出版ステータスPublished - 1994 12月

ASJC Scopus subject areas

  • 内科学


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