[Human blood biochemical parameters under the conditions of an arid zone]. / Nekotorye biokhimicheskie parametry krovi cheloveka v usloviiakh aridnoi zony.

Seven participants of 23 day walking march in an arid environment have been examined. Biochemical analysis of blood serum made on Day 2 of marching revealed a decrease in the levels of glucose, triglycerides and an increase in the concentration of non-esterified fatty acids which the authors characterize as the state of moderate stress in an acute period.

[Metabolism in cosmonauts: the results of biochemical research on the blood of the crew members of the 7 prime expeditions on the Mir orbital space complex]. / Obmen veshchestv u kosmonavtov: itogi biokhimicheskogo issledovaniia krovi u chlenov ékipazhei 7 osnovnykh ékspeditsii na orbital'nom komplekse "Mir".

The pre- and postflight biochemical analyses of the blood of 16 cosmonauts flown aboard Mir orbital station over 125-366 days revealed the changes in carbohydrate, lipid and protein metabolism being in line with the present-day ideas about the space flight effects on the human metabolism. A particular individual pattern of the responses and the absence of correlation with flight duration of space expeditions ranging from 4 months to a 1 year, are noted.

[Protein composition of blood serum and the products of nitrogen metabolism in humans during long-term hypokinesia]. / Belkovyi sostav syvorotki krovi i produkty azotistogo metabolizma u cheloveka v usloviiakh dlite'lnoi gipokinezii.

Examination of 9 healthy young men exposed to antiorthostatic hypokinesia (-5 degrees) for 370 days revealed enhanced catabolic processes in the muscular tissue. This manifested as increases of creatinine in blood and urine as well as of the creatinine coefficient. The use of countermeasures prior to experimental day 170 helped to maintain the concentration of final nitrogen metabolites at the baseline level. The serum concentrations of total protein and protein fractions remained within the normal limits and varied in a phasic manner. We observed a decrease of the concentration of alpha 2-globulins, which indicates inhibition of the synthetic activity of the liver, and an increase of that of beta-globulins, which suggests an adverse effect of head-down tilt on lipid metabolism.