| First Author | Bloemen PG | Year | 1996 |
| Journal | Am J Respir Crit Care Med | Volume | 153 |
| Issue | 2 | Pages | 521-9 |
| PubMed ID | 8564091 | Mgi Jnum | J:35920 |
| Mgi Id | MGI:83363 | Doi | 10.1164/ajrccm.153.2.8564091 |
| Citation | Bloemen PG, et al. (1996) LFA-1, and not Mac-1, is crucial for the development of hyperreactivity in a murine model of nonallergic asthma. Am J Respir Crit Care Med 153(2):521-9 |
| abstractText | In this study, we investigated the importance of the beta 2-integrins for the development of tracheal hyperreactivity in a murine model for nonallergic asthma. The response was induced by skin sensitization with dinitrofluorobenzene (DNFB) followed by an intranasal challenge with the same hapten. Twenty-four hours after the challenge, tracheal hyperreactivity, a decrease in T cells in the blood, and increased neutrophil numbers in bronchoalveolar lavage fluid (BALF) and blood were observed. Monoclonal antibodies (mAbs) directed against the alpha-chains of LFA-1 (FD441.8) and Mac-1 (M1/70) were injected intravenously 2 h before and 2 h after the challenge. Treatment with anti-LFA-1 mAb totally inhibited the development of tracheal hyperreactivity measured 24 h after the challenge, whereas anti-Mac-1 mAb had only a partial effect on this response. The decrease in T cells in the blood, which was also evident 24 h after the challenge, was totally inhibited by treatment with anti-LFA-1, whereas anti-Mac-1 had little effect. The increase in the number of neutrophils in BALF at this time point was completely inhibited by both anti-LFA-1 and anti-Mac-1. In summary, evidence presented in this report highlights the possible importance of the adhesion molecule LFA-1 in the development of tracheal hyperreactivity. Our results suggest that LFA-1 present on T cells may play an integral role in this response. |
