[Biochemical characteristics of fluid and cells of bronchoalveolar washings in patients with extrinsic allergic alveolitis].

In 43 patients with exogenous allergic alveolitis (EAA), including 30 and 13 in its acute and chronic disease, bronchoalveolar lavage was performed, bronchoalveolar washing fluid (BAWF), isolated alveolar macrophages (AM) and unfractionated cellular sediment (NFCS) were separately studied. The BAWF showed high rates of lipid peroxidation (LPO), decreased antiproteolytic defense, and activated local synthesis of haptoglobin (Hp), fibronectin (FN), platelet activation factor (PAF), and enzymes of antioxidative defense (AOD). There was a rise in FN and PAF concentrations in the acute phase of the disease and higher PLO rates and elevated Hp levels in chronic EAA. The rate of oxidative metabolism in AMs was much higher in acute EAA than that in chronic EAA and accompanied by imbalance in the PLO-AOD system. AM levels of PAF was high in patients in both groups. The rate of LPO was higher in NFCS than in AM and was also followed by simultaneous AOD mobilization with preserved imbalance. A particularly significant AOD insufficiency in the NFCS was noted in chronic EAA, which was accompanied by decreased PAF. Thus, local pathochemical processes are of significance in developing the pattern of the process in EAA.