The influence of homologous pulmonary proteins on the lung tissue reactivity: an experimental analysis.

The influence of homologous pulmonary proteins on the lung tissue reactivity was experimentally and immunomorphologically analysed in rabbits: a. in the development of specific sensitized substrate; b. by the challenge of hypersensitivity reactions: and c. by the evaluation of the development of an experimental lung tuberculosis at the level of the sensitized lung. Morphometrical methods were used. The immunomorphological analysis pointed out the importance of the increase of pyroninophilic and plasma cells and of eosinocytes in the lung tissue sensitized to homologous proteins included in the complete Freund adjuvant, the specificity and peculiarities (frequency of plasmocytosis and necrosis) of hypersensitivity reactions intratracheally and intravenously challenged with the homologous pulmonary proteins at the level of the sensitized lung, as well as the severe evolution of the experimental lung tuberculosis by comparison with that developing in a lung substrate sensitized without homologous pulmonary proteins or unsensitized. These results provided data for the influence exerted on the lung substrate by the pulmonary proteins which are released during the evolution of lugn processes and could act as autoantigens in the framework of an autoaggressive pathogenic component of chronic diseases.