Cyanide has gained historical notoriety as a poison used with intent to cause fatality. Its occurrence in industry is confined to a small number of uses in a relatively narrow range of industries, including the manufacture of Perspex and nylon and in electroplating. With proper controls in these settings, episodes of poisoning are extremely rare. However, because of the potential for a fatal ou...

Of 52 patients receiving a mean dose of 2.5g sulphasalazine/day as maintenance therapy for ulcerative colitis, 35 were found to have one or more drug-induced red cell abnormalities, which were not found in 50 normal controls or in 10 colitics not receiving sulphasalazine. Twenty-three of the treated patients had contracted red cells, an abnormality that is thought to result in mild haemolysis. ...

Zidovudine (AZT) is a nucleoside analog, a reverse transcriptase inhibitor (NRTI) and a type of antiretroviral drug used for the treatment of HIV/AIDS. The administration of zidovudine to the wistar albino rats showed an increase in erythrocyte fragility as can be seen from figure 1. There were significant (p<0.05) increases in serum Aspartate aminotranseferase (AST) activity, and GlutathioneSt...

Exposure to nitrate is toxic aquatic animals due the formation of methaemoglobin and a subsequent loss blood-oxygen carrying capacity. Yet, toxicity can be modulated by other stressors in environment, such as elevated temperatures. Acclimation temperatures has been shown offset negative effects on whole animal performance fish, but mechanisms underlying this cross-tolerance interaction remain u...

This paper describes E new method of producing a crystalline intermediate between the unligated and ligated states of haemoglobin, suitable for X-ray analysis, by the use of a lattice strengthening reagent. Acrylamide is polymerized in the liquid of crystallization after the crystal haa grown, forming a stiff supporting gel between the haemoglobin molecules, but not covalent bonds with them. Th...