TY - JOUR
T1 - Neutrophil activation by murine retroviral infection during chronic ethanol consumption
AU - Chen, Yinhong
AU - Mendoza, Sam
AU - Davis-Gorman, Grace
AU - Cohen, Zoë
AU - Gonzales, Raoul
AU - Tuttle, Hillary
AU - McDonagh, Paul F.
AU - Watson, Ronald R.
PY - 2003/3
Y1 - 2003/3
N2 - Aims: Neutrophil adhesion molecule CD11b and reactive oxygen species (ROS) are neutrophil activation markers for evaluating the functional activity of neutrophils. The aim of this study was to determine if neutrophils are activated in murine AIDS and/or chronic ethanol consumption and if neutrophil CD11b expression and ROS production vary when progressive retrovirus infection occurs. Methods: Four groups were studied: control, murine AIDS, ethanol and ethanol plus murine AIDS. Neutrophil activation was assessed by CD11b expression and ROS production using flow cytometry. Results: We found that neutrophils lost their responsiveness to fMLP due to retrovirus or ethanol exposure. In the murine AIDS group, neutrophil CD11b expression was up-regulated along with a significant increase in ROS after 1 month of retroviral infection. After 2 months, neutrophil CD11b and ROS decreased. However, neutrophil CD11b expression further increased after 3 months. In the ethanol consumption group, neutrophil CD11b expression was down-regulated after 2 months, whereas ROS production increased in the first and third months. In the murine AIDS plus ethanol group, there were significant increases in both ROS and CD11b expression during the 3-month observation period. Conclusions: These findings suggest that neutrophil function is impaired by LP-BM5 retrovirus infection and/or chronic ethanol consumption. The pattern of neutrophil CD11b expression and ROS production might help to predict the stage of murine AIDS. Ethanol may further compromise neutrophil function in AIDS.
AB - Aims: Neutrophil adhesion molecule CD11b and reactive oxygen species (ROS) are neutrophil activation markers for evaluating the functional activity of neutrophils. The aim of this study was to determine if neutrophils are activated in murine AIDS and/or chronic ethanol consumption and if neutrophil CD11b expression and ROS production vary when progressive retrovirus infection occurs. Methods: Four groups were studied: control, murine AIDS, ethanol and ethanol plus murine AIDS. Neutrophil activation was assessed by CD11b expression and ROS production using flow cytometry. Results: We found that neutrophils lost their responsiveness to fMLP due to retrovirus or ethanol exposure. In the murine AIDS group, neutrophil CD11b expression was up-regulated along with a significant increase in ROS after 1 month of retroviral infection. After 2 months, neutrophil CD11b and ROS decreased. However, neutrophil CD11b expression further increased after 3 months. In the ethanol consumption group, neutrophil CD11b expression was down-regulated after 2 months, whereas ROS production increased in the first and third months. In the murine AIDS plus ethanol group, there were significant increases in both ROS and CD11b expression during the 3-month observation period. Conclusions: These findings suggest that neutrophil function is impaired by LP-BM5 retrovirus infection and/or chronic ethanol consumption. The pattern of neutrophil CD11b expression and ROS production might help to predict the stage of murine AIDS. Ethanol may further compromise neutrophil function in AIDS.
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U2 - 10.1093/alcalc/agg049
DO - 10.1093/alcalc/agg049
M3 - Article
C2 - 12634256
AN - SCOPUS:0037346360
SN - 0735-0414
VL - 38
SP - 109
EP - 114
JO - Alcohol and Alcoholism
JF - Alcohol and Alcoholism
IS - 2
ER -