[Effect of infrared low power laser irradiation on blood acid-base balance and respiratory gases tension]. / Vliianie nizkointensivnogo infrakrasnogo lazernogo izlucheniia na kislotno-shchelochnoi balans krovi i napriazhenie v nei dykhatel'nykh gazov.

Small volume (0.5 ml) of arterial or venous rat's blood was subjected to impulse LPILR (lambda = 0.89 microns) in the light transparent cuvette. In arterial blood, a decrease of the pO2 (by 15.5 +/- 2.6%) and an increase of the pCO2 (by 22.0 +/- 4.8%) in respect to initial values, were determined. The acid-base shift from 7.39 +/- 0.02 to 7.34 +/- 0.02 was recorded. Only in few experiments, there were changes of pO2, pCO2 and pH in venous blood. Probable mechanism(s) of the mentioned parameters changes are discussed.

The influence of phosphorus deficiency on growth and nitrogen fixation of white clover plants.

The effects of P deficiency on growth, N(2)-fixation and photosynthesis in white clover (Trifolium repens L.) plants were investigated using three contrasting relative addition rates of P, or following abrupt withdrawal of the P supply. Responses to a constant below-optimum P supply rate consisted of a decline in N(2)-fixation per unit root weight and a small reduction in the efficiency with which electrons were allocated to the reduction of N(2) in nodules. Abrupt removal of P arrested nodule growth and caused a substantial decline in nitrogenase activity per unit root weight, but not per unit nodule mass. Similarly, the rate of photosynthesis per unit leaf area was unaffected by abrupt P removal, whereas CO(2) acquisition for the plant as a whole decreased due to a decline in total leaf area, leaf area per unit leaf weight and utilization of incoming radiation. These changes followed the decline in tissue P concentrations. The ratio between CO(2)-fixation and N(2)-fixation was maintained under short-term P deprivation but increased under long-term low P supply, indicating a regulatory inhibition of nodule activity following morphological and growth adjustments. It is concluded that N(2)-fixation did not limit the growth of clover plants experiencing P deficiency. A low P status induced changes in the relative growth of roots, nodules and shoots rather than changes in N and/or C uptake rates per unit mass or area of these organs.

[Autologous transfusion of UV-irradiated blood in the treatment of occlusive arterial diseases of the lower extremities]. / Autotransfuziia UFO-krovi v lechenii obliteriruiushchikh zabole- vanii arterii nizhnikh konechnostei.

Complex examination of 72 patients with obliterating atherosclerosis and 10 patients with obliterating endarteritis was performed. All the patients were given autotransfusion of UV-irradiated blood as conservative treatment, preoperative preparation and postoperative management. The course of AUVIB was followed by a decrease of the lactic acid level, increase of functional properties of hemoglobin, activation of humoral immunity, change of the blood hemostatic potential to the side of hypocoagulation. The AUVIB treatment was most effective in patients at initial stages and those with peripheral forms of the disease.