Increase in CD8+and CD4+T lymphocytes in patients with vibroacoustic disease.
Some workers employed by the aviation industry are exposed to large pressure amplitude and low frequency (LPALF) noise (>=90 dB SPL, <=500 Hz) and have developed vibroacoustic disease (VAD), a whole-body noise-induced pathology.
Since VAD patients have an increased prevalence of respiratory and skin infections, we investigated whether these individuals had any quantitative changes in the number of peripheral blood cell populations.
Also, we investigated whether different types of noise environments are related to cell quantification.
Quantification of peripheral blood cell populations was performed in venous blood samples of 34 VAD-diagnosed patients, and 41 controls.
Leukocytes, monocytes, granulocytes, and surface phenotypes of CD8+and CD4+T lymphocytes were considered.
We found that VAD patients showed a statistically significant elevation in the number of circulating CD8+and CD4+T lymphocytes when compared with the control population, but not when compared among different noise-environments.
Monocyte and granulocyte populations did not register significant differences.
VAD patients present enhancement in the number of circulating cytotoxic T lymphocytes (CD8+and CD4+T cells) thus indicating that this environmental disease is associated with quantitative changes in immune cells.
Mots-clés Pascal : Bruit, Basse fréquence, Vibration, Nuisance acoustique, Industrie aéronautique, Exposition professionnelle, Traumatisme, Agent physique, Lymphocyte T, Immunomodulation, Analyse quantitative, Aviation pathologie, Médecine aérospatiale, Médecine travail, Facteur milieu, Homme, Antigene CD4, Antigène CD8
Mots-clés Pascal anglais : Noise, Low frequency, Vibration, Noise pollution, Aeronautic industry, Occupational exposure, Trauma, Physical agent, T-Lymphocyte, Immunomodulation, Quantitative analysis, Aviation medicine, Space medicine, Occupational medicine, Environmental factor, Human
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0253187
Code Inist : 002B16M. Création : 16/11/1999.