Recurrent respiratory syncytial virus infections in allergen-sensitized mice lead to persistent airway inflammation and hyperresponsiveness

被引:82
作者
Matsuse, H
Behera, AK
Kumar, M
Rabb, H
Lockey, RF
Mohapatra, SS
机构
[1] Univ S Florida, Dept Internal Med, Div Allergy & Immunol, Joy McCann Culverhouse Airway Dis Res Ctr, Tampa, FL 33612 USA
[2] Univ S Florida, Dept Med Microbiol & Immunol, Tampa, FL 33612 USA
[3] James A Haley Vet Affairs Hosp, Tampa, FL 33612 USA
[4] Univ Minnesota, Dept Med, Minneapolis, MN 55415 USA
关键词
D O I
10.4049/jimmunol.164.12.6583
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Respiratory syncytial virus (RSV) infection is considered a risk factor for bronchial asthma; however, the synergy between allergen sensitization and RSV infection in the development of pulmonary inflammation and asthma has been controversial. In this study the effects of primary and recurrent RSV infection on allergic asthma were examined in a group of control, RSV-infected, Dermatophagoides farinae (DJ) allergen-sensitized, and Df allergen-sensitized plus RSV-infected BALB/c mice. Primary RSV infection in Df-sensitized mice transiently increases airway responsiveness, which is accompanied by increases in eosinophilic infiltration, the expression of ICAM-1, and macrophage inflammatory protein-la (MIP-lcr) in the lung tissue. A secondary RSV infection persistently enhances airway responsiveness in Df-sensitized mice, with a concomitant increase in MIP-1 alpha and RSV Ag load in lung tissues. Bulk cultures of thoracic lymph node mononuclear cells demonstrate that acute RSV infection augments both Th1- and Th2-like cytokines, whereas secondary acid tertiary infections shift the cytokine profile in favor of the Th2-like cytokine response in Df-sensitized mice. The elevated total serum IgE level in the Df-sensitized mice persists following only RSV reinfection. Thus, recurrent RSV infections in Df-sensitized mice augment the synthesis of Th2-like cytokines, total serum IgE Abs, and MIP-1 alpha, which are responsible for persistent airway inflammation and hyperresponsiveness, both of which are characteristics of asthma.
引用
收藏
页码:6583 / 6592
页数:10
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