[Pectin production from burdock (Arctium sp.)].

The pectin complex of different morphological parts of burdock: leaf, leaf stems, main stock have been investigated. High quantity of pectic substances about 1.9% per wet mass, has been detected in the leaf stems of burdock.

[Mechanisms of changes in the sensitivity of platelets to prostacyclin in patients with cerebrovascular diseases].

Sensitivity of thrombocytes to the antiaggregation effect of prostacyclin was decreased in patients with dyscirculatory encephalopathy, which occurred in response to, at least, two reasons: a decrease in content of highly affinity receptors of prostacyclin on thrombocyte membranes and as a result of impairment in binding ability of the thrombocyte protein kinases. Combination of both these factors was also possible, which caused especially distinct impairments in the prostacyclin control of the thrombocyte functions.

[Clinical aspects of the radioimmunoassay of carcinoembryonic antigen levels in breast cancer].

The paper is concerned with the results of radioimmunoassay of the CEA level in the blood serum of 235 patients with breast cancer, 48 patients with fibrous-cystic mastopathies and 51 healthy women. In 100 patients with generalized breast cancer repeated examination of the CEA level was done during drug treatment. The authors showed a possibility to use in practice the results of radioimmunoassay of CEA in patients with breast cancer in early stages as a prognostic test as well as an additional criterion in the evaluation of drug therapeutic efficacy in patients with generalized breast cancer.