Thallium Induced Changes in Behavioral Patterns: Correlation With Altered Lipid Peroxidation and Lysosomal Enzyme Activity in Brain Regions of Male Rats

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Abstract
New Zealand white rabbits were exposed to phosgene doses, expressed as Ct factors, of 125-3120 ppm·min. Hexamethylenetetramine (HMT), 0.3 gm/kg as a 40% aqueous solution, was injected via an ear vein into separate groups of animals at 5-10 min pre-exposure or at 15 min post-exposure to the gas. Non-exposed and exposed, non-HMT-treated animals served as controls. As assessed by survival times, gross morphology of the lungs, percent lung water measurements, serum LDH values, and respiratory gas parameters, pre-exposure administration of HMT at Ct factors as high as 3120 ppm·min provided significant prophylaxis against the effects of phosgene. Post-exposure administration of HMT, however, provided no antidotal effect even when administered as soon as 15 min after exposure to 125 ppm·min phosgene.