Malaria parasites adapt to the oxidative stress during their erythrocytic stages with the help of vital thioredoxin redox system and glutathione redox system. Glutathione reductase and thioredoxin reductase are important enzymes of these redox systems that help parasites to maintain an adequate intracellular redox environment. In the present study, activities of glutathione reductase and thiore...

CONTEXT The preservative solution ADSOL (adenine, dextrose, sorbitol, sodium chloride and mannitol) maintains red cell viability for blood trans-fusion for 6 weeks. It would be useful to know about its preservation qualities over longer periods. OBJECTIVE To determine some red cell biochemical parameters for peri-ods of up to 14 weeks in order to determine whether the red cell metabo-lism int...

E RYTHROCYTES modified by sensitization wit-h antil)odies, by treatment with enzymes or viruses, or by storage have showis properties in common with the abnormal, short-lived erythrocytes from patients with certain hemolyt-ic anemias. These are increased fragility, increased susceptil)ility to phagocytosis,’ and agglutination in normal serum. The characteristic agglutination of suital)ly trypsi...

Background: Light and photosensitizers affectthe survival of bacteria in natural environments. Also light and photosensitizers are used for disinfection of materials such as blood, blood products, and water. Objectives: The present study was aimed toinvestigate the effect of different wavelengths of visible light and UV-A on the synthesis of some oxidative stress enzymes of Escherichia coli (E....

The resulting injury to specific cells of the leaves releases the contents of the vacuoles, allowing intermixing with enzymes associated with other cell structures. Phenol oxidase is such an enzyme and causes the oxidation of various polyphenols (tannin -like substances) normally found in the cell vacuole. Oxidation of polyphenols, followed by vaguely understood polymerization reactions, result...