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PubMedDate not supplied

[The effect of tuftsin on fibrin polymerization in vitro and on the hemostatic system when administered intravenously to healthy animals].

Taftsine tetrapeptide has antiprocoagulatory properties in vitro in the presence of plasma. Taftsine exerts depolymerization influence on fibrin monomer in concentrations of 10(-1) to 10(-9) mg/ml. At intravenous injection in doses of 1 mg and 300 ug/kg, taftsine causes the increase in plasma clotting time and significant increase in enzymatic and nonenzymatic fibrinolysis. The effect can be observed during 120 min after injection of the peptide.

Animals↗
PubMed1986

[Tuftsin].

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Humans↗
PubMed1985

[Effect of tuftsin on the activity of energy metabolism enzymes in peritoneal macrophages].

Cytochemistry was used to measure the activity of succinate dehydrogenase (SOD), lactate dehydrogenase (LDH) and glucose-6-phosphate dehydrogenase (G-6-PDH) in rat peritoneal macrophages under the action of the endogenous immunostimulant tuftcin (tre-lys-pro-arg) during phagocytosis of latex particles and at rest. Tuftcin did not affect the activity of the study enzymes in non-phagocytic cells. Elevation of the peptide concentration to 0.25 micrograms/ml and higher in phagocytic macrophages activated G-6-PDH and lowered the activity of LDH. Tuftcin did not alter the activity of SOD in phagocytic macrophages.

Animals↗