[The effect of chitosan on biological properties of gram-negative bacterial endotoxins].
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Biomedical subjects
Publications and source records attributed to V V Maleev.
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Plasmic and platelet components of hemostasis were investigated in 100 HIV-infected subjects. Its degree depended on the infection stage and associated opportunistic infections. The key factor in pathogenesis of hemocoagulatory disorders is reduced count, abnormal function and morphology of platelets. A direct relationship exists between the number of CD4-lymphocytes, a decline in the number and functional activity of platelets. Intravenous injection of immunoglobulin made in Russia as an adjuvant to combined therapy of HIV-infected subjects contributes to recovery of platelet count and aggregation.
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Literature data and original experience are reviewed on the treatment of alimentary toxoinfections complicated with acute renal failure (ARF). Out of 192 patients prerenal ARF was recorded in 74.5%, renal in 25.5% of the cases. ARF resulted from hemodynamic disturbances, salt and water loss, intoxication. ARF clinical symptoms were poor, the patients developed decompensated metabolic acidosis and hyperazotemia. Pathological and histological evidence is available for 17 patients with "shock kidney". They died of infective toxic shock. The treatment of ARF complicating acute alimentary toxoinfections in 98.9% made a success if implied polyion crystalloid solutions. Hemodialysis was demanded in 1.1% of the cases.
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Morphological parameters of the red cells were studied in 121 patients with typhoid-paratyphoid conditions. To obtain objective clinical data the authors studied the effect of LPS S. anatum on the intact red cells of healthy persons. The correlation of morphological disorders in the red cells of the patients and the controls revealed a significant role of intoxication in their origin. The research conducted revealed a relationship between the disorders in the erythrocyte membranes and the development of anemia in the patients.
Platelets play the leading role in circulatory disorders seen in patients with infectious diseases. Endotoxinemia leads to platelet activation which shows up by the transformation of platelet forms from disk-shaped to spheroidal and by changes in aggregation and secretion. The degree of those changes correlates with the disease gravity. Experimental endotoxinemia (in vivo and in vitro experiments) demonstrated the same changes in the morphofunctional properties of platelets together with a possibility of correcting circulatory disorders by blockers of prostaglandin biosynthesis, such as indomethacin++, trental and emoxipine.
As many as 94 patients with yersiniosis were examined for the morphofunctional status of platelets (aggregation, disaggregation, endo-exocytosis and platelet forms). The data indicate that platelet from patients with yersiniosis possess a high ability for aggregation and a low ability for disaggregation. According to the experimental and clinical data, emoxipine can restore disturbed function of human platelets.
Therapeutic effectiveness of an oral rehydration solution of the second generation Super-ORS based on rice and salt has been tried in 28 patients with food poisoning. Administration of the solution produced a marked clinical effect superior to that of the first generation solutions Glucosalan, Citroglucosalan, Rehydron.
The efficacy of the solutions of oral rehydration salts (ORS) of the first and second generations was estimated in the treatment of patients with acute intestinal infections. 150 patients with food toxicoinfections were examined. Two groups of the patients received the solutions of ORS of the first generation (glucosalan and citroglucosalan) and one group were given the second generation ORS solution based on the rice and salt, manufactured by Galactina (Switzerland). The clinical cases were analyzed. Some biochemical parameters that characterize certain aspects of homeostasis and bioenergetics were explored. The authors emphasize a greater effectiveness of the second generation solutions of ORS producing not only detoxification and rehydration but also serving as a food.
The authors review a newly formed focus of Marseilles [correction of Marsel] fever in Astrakhan Province marked by the epidemiological characteristics related to the disturbance of the ecological balance. While analyzing the clinical picture of the disease in 251 patients, emphasis is laid on the typical signs of the given disease.