Maria Greabu *, R. Olineseu *, B. Voiculescu **, D. Croenan *
* Dr. Biochim. R. Olinescu, Conf. Dr. Maria Greabu, Dr. Biofiz. D. Crocnan – Departamentul de Biochimie, Universitatea de Medicină şi Farmacie “Carol Davila”
* Asist. Dr. B. Voiculescu – Departamentul de Anatomie, Universitatea de Medicină şi Farmacie “Carol Davila”
Abstract
The involvement of chemical polluting substances in the pathology of the respiratory system is unanimously accepted. The chronic exposure to atmospheric pollutants is the key factor in many lung diseases. Respiratory pollution is not only prevailing but also it permits an alarm to the exposed subjects. As a result of the great surface of the pulmonary tree, of vascularisation and ana.tomical structure, on the respiratory way can penetrate and can be absorbed gaseous chemical pollutants or aerosols, solid particles (dust, smog). The volatility and liposolubility determine the gas penetration in lungs. The gases and not reactive vapors, like organic solvents, have a reduced metabolisation, but the acids, bases and irritaging gases have a great reactivity and generate profound lesions. On the scale of evolution, nature permitted the respiratory system to develop a series of complex mechanical and biochemical mechanisms for adaptation and defense.