Tests were conducted to determine the concentrations of copper sulfate needed to kill Flavobacterium psychrophilum, the cause of bacterial coldwater disease, either in vitro or on Rainbow Trout Oncorhynchus mykiss eggs. For the in vitro test, a plastic strip dipped in a solution of F. psychrophilum was exposed for 15 min to copper sulfate solutions of 0, 1, 5, 10, 20, 35, 50, 75, or 100 mg/L. B...

A method for the speciation of zinc and copper binding with proteins in human serum was explored by chelating resin (Chelex-100) pre-treatment and inductively coupled plasma mass spectrometry (ICP-MS). It was shown by a SEC (size-exclusion chromatography)-ICP-MS system that albumin-zinc and albumin-copper (loosely-bound species) could be selectively removed from serum by adsorption on the Chele...

Bacterial spot, caused by Xanthomonas spp., is one of the major bacterial diseases in pepper (Capsicum annuum L.). The infection results in reduced crop yield, particularly during periods of high rainfall and temperature, due to the low efficiency of chemical control with copper bactericides. This study evaluated the copper and zinc sulfate sensitivity of 59 pathogenic strains of Xanthomonas eu...

The effect of long-term copper acclimation of the freshwater green algae Pseudokirchneriella subcapitata to copper was investigated using different physiological and toxicological endpoints. The algae were exposed to seven-five of which are ecologically relevant for European surface waters-copper concentration ranging from 0.5 to 100 microgCul(-1) during a 3-month period. A standard medium was ...

1. Copper compounds (calcium copper edetate, copper heptanoate, copper methionate, copper chloride, copper oxide, dicopper oxide and copper gluconate) are normally used, orally in feed or in an injectable solution, to treat copper deficiency in food-producing animals. In veterinary medicine, the recommended doses are 50 to 100 mg copper per animal given as a single injection. Copper has antimic...

Several components of branchial copper uptake were identified in juvenile freshwater rainbow trout (Oncorhynchus mykiss) using (64)Cu. On the basis of competitive interactions between sodium and copper uptake, inhibition of copper uptake by a proton pump inhibitor (bafilomycin A1, 2 micromol l(-1)) and a Na(+) channel blocker (phenamil, 100 micromol l(-1)), it appears that a proportion of the b...

BACKGROUND Copper (Cu) is an essential trace element involved in normal reproduction but its overexposure may produce some detrimental effects. The aim of this study was to investigate the effects of copper sulfate poisoning on morphometery of mice ovarian structures and probable intracellular changes. METHODS Thirty mature female mice were randomly allocated to control and two treatment grou...