Abstract
To explore the effects of respiratory syncytial virus (RSV) upon the expressions of mRNA and protein of intercellular adhesion molecule-1 (ICAM-1) in human embryonic lung fibroblast cells. The expressions of mRNA and protein of ICAM-1 were determined in human embryonic lung fibroblast cells after being infected by the LONG strain type A RSV and in normal fibroblast cells with real-time PCR and flow cytometry. The mRNA of ICAM-1 expression in human embryonic lung fibroblast cells was 2.51 times at 24 h post-infection as that in normal fibroblast cells (P < 0.05). The protein of ICAM-1 expression of RSV control group (1.25 +/- 0.09, 1.87 +/- 0.18, 4.78 +/- 0.52, 13.34 +/- 0.64, 1.58 +/- 0.37) were significantly higher than those of normal cell group (0.21 +/- 0.06, 0.30 +/- 0.06, 0.29 +/- 0.07, 0.35 +/- 0.17, 0.35 +/- 0.14) at 12, 24, 48, 72 and 96 h post-infection (all P < 0.01). The protein of ICAM-1 expression of RSV control group achieved a peak value between 48 h and 72 h, and then it decreased significantly at 96 h. Lung fibroblast cell and ICAM-1 may play some roles in pathogenic mechanism of RSV viral pneumonia.
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