[Data on establishing the MPEL for the dust of a polymineralic potassium ore in the air of a work area].

The article contains data on the norming principles for and the biologic action of polymineralic potassium dusts. The analysis and comparison of experimental and clinical data presented potassium ore as a substance characterized by low toxicity and weak fibrogenic action. In animal studies, the general toxic action of potassium aerosols exceeded the fibrogenic effects.

[Changes in the level of unsaturated fatty acids in rheumatoid arthritis patients during treatment].

Patients with rheumatoid arthritis showed changes of the fatty acid spectrum manifested in a reduction of the polyunsaturated acids (linoleic, linolenic, arachidonic) and an increase of the level of monounsaturated (oleic, palmithooleinic) depended on the course of the disease. Antirheumatic treatment produced a positive effect, especially gold preparations, on normalization of the level of unsaturated fatty acids in rheumatoid arthritis.

[The prevention of chrysotherapy complications in patients with rheumatoid arthritis].

To prevent side-effects of chrysotherapy for rheumatoid arthritis the authors recommend a treatment scheme under corticosteroid protection. The proposed method was used in 56 patients with rheumatoid arthritis. Side-effects manifested in allergic eruptions were noted in 3 patients (5.