[Effect of gamma radiation on levels of adenine nucleotides in erythrocytes of healthy individuals after submaximum physical exertion]. / Wplyw promieniowania gamma na stezenie neukeotydów adeninowych w erytrocytach ludzi zdrowych poddanych submaksymalnemu wysilkowi fizycznemu.

The authors studied the effect of gamma radiation and submaximum physical exercise on adenosine-5'-triphosphate (ATP), adenosine-5'-diphosphate (ADP) and adenosine-5'-monophosphate (AMP) contents in erythrocytes of healthy males. Twenty one men aged 20-22 years were examined. They underwent physical exercise at doses of 2 w/kg body weight for 15 min. Erythrocytes were exposed to gamma radiation (500 gy doses) from 60Co source. The concentration of adenine nucleotides in erythrocytes was measured by the Boehringer Mannheim tests. The submaximum physical exercise was found to decrease ATP content and to to increase ADP and AMP in erythrocytes. Gamma radiation at 500 Gy dose was found to decrease ATP concentration in erythrocytes both at rest and after submaximum exercise and to increase AD content. It was revealed that AMP content increased at rest and decreased after submaximum exercise in irradiated erythrocytes.

[Effect of gamma radiation on the concentration of pyruvate and lactate in erythrocytes of healthy men after submaximal physical exercise]. / Wplyw promieniowania gamma na stezenie pirogronianu i mleczanu w erytrocytach ludzi zdrowych poddanych submaksymalnemu wysilkowi fizycznemu.

The aim of this work was to study the effect of gamma radiation and submaximal physical exercise on the concentration of final products of anaerobic glycolytic pathway in erythrocytes of healthy men. Twenty one men aged 20-22 were examined. They underwent physical exercise at doses of 2 w/kg body weight for 15 min. Erythrocytes were taken in the rest and after physical exercise and were exposed to gamma radiation (500 Gy doses) from 60Co source. The concentration of pyruvate was estimated by Fermognost tests and the concentration of lactate by Boehringer Mannheim tests. The submaximal physical exercise was found to cause a significantly increased concentration of pyruvate and lactate in the non-radiated and irradiated erythrocytes. Gamma radiation at 500 Gy dose was found to increase concentration of pyruvate in erythrocytes (in the rest and after physical exercise) with simultaneous decrease of lactate concentration.

[Superoxide dismutase (SOD-1) activity in erythrocytes of patients with multiple sclerosis]. / Aktywnosc dysmutazy ponadtlenkowej (SOD-1) w erytrocytach chorych na stwardnienie rozsiane.

The purpose of the study was determination of the activity of superoxide dismutase (SOD-1) in the erythrocytes of multiple sclerosis patients taking into consideration certain aspects of the disease, such as its duration, clinical form and course, age and sex of the patients. The study included 34 patients (17 males and 17 females) aged 19 to 56 years. The control group comprised 64 healthy subjects (25 females and 38 males) aged 19-59 years. A significant reduction was found of SOD-1 activity in the erythrocytes of the patients which may suggest a lower enzymatic defense mechanisms against oxidative stress. No difference in the activity of SOD-1 was found between clinical forms and different courses of the disease, although the activity changed in relation to age, sex and disease duration.

[Effect of the treatment with adrenocorticotropic hormone on the 2,3-diphosphoglycerate level in the erythrocytes of patients with multiple sclerosis]. / Wplyw leczenia hormonem adrenokortykotropowym na stzenie 2,3-difosfoglicerynianu w erytrocytach ludzi chorych na stwardnienie rozsiane.

The reported study was carried out in 20 patients with multiple sclerosis (12 women, 8 men) aged 23 to 54 years, with disease duration from 3 to 20 years. The patients were treated with the preparation ACTH-Polfa 2000 mg for one treatment course. The patients were divided into subgroups considering the age, disease duration, clinical form and clinical course of the disease. The control group comprised 22 healthy subjects (10 women and 12 men) aged from 22 to 41 years. The concentration of 2,3-diphosphoglycerate in the erythrocytes was determined by Bartlett's method twice: before and after ACTH treatment. Before the treatment the concentration of 2,3-DPG in the erythrocytes of the patients was not different from that in the controls, but after the treatment this concentration was significantly increased in all groups. It was demonstrated, furthermore, that 2,3-DPG concentration in the erythrocytes could change before ACTH treatment depending on the age of the patients and the clinical course of the disease.