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Three forms of acetylcholinesterase (AChE) were detected in samples of the bivalve mollusc Mytilus galloprovincialis collected in sites of the Adriatic sea. Apart from the origin of the mussels, two spontaneously soluble (SS) AChE occur in the hemolymph and represent about 80% of total activity,...
Chromium (VI) is an environmental and occupational carcinogen, and it is accepted that intracellular reduction is necessary for DNA damage and cytotoxicity. We have investigated the interaction of Cr(VI) with hepatocytes in vitro to determine the contribution of various hepatic enzymes to the...
Elimination in urine and feces was compared between four perfluorinated fatty acids (PFCAs) with different carbon chain length. In male rats, perfluoroheptanoic acid (PFHA) was rapidly eliminated in urine with the proportion of 92% of the dose being eliminated within 120 h after an...
The effect of green tea extract (GTE) in Ehrlich ascites tumor cells (EATC) was studied with respect to changes in the intracellular kinase system involving mitogen-activated protein kinases (MAPKs) and cellular thiol. We have previously shown a reduction in viability of EATC and tyrosine...
The Syrian hamster Harderian gland (HG), representing a highly porphyrogenic organ, was used as a model system for studying physiologically occurring damage of biomolecules by porphyrins and their precursors, phenomena associated with from the pathological situation of porphyrias. The species...
In order to measure rates of unscheduled DNA synthesis (UDS), mitochondrial DNA synthesis, and cell proliferation, i.e. factors relevant in the early phase of carcinogenesis, young rats received by gavage 200 mg/kg N -nitrosomorpholine (NNM) or vehicle (distilled water), and were injected with 3...
The proximal tubule is a frequent target for nephrotoxic compounds due to it's ability to transport and accumulate xenobiotics and their metabolites, as well as by the presence of an organ-selective set of biotransformation enzymes. The aim of the present study was to characterize the activities...
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