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Effect of smoke on PAPP-A and lipid profile in normal rats.

Cigarette smoking is a major risk factor for atherosclerosis and cardiovascular disease. Active and passive cigarette smoke exposure predisposes to cardiovascular events. Pregnancy associated plasma protein-A is a metalloproteinase of the metzincin super family. It cleaves specific insulin like growth factor binding proteins thereby regulating local insulin like growth factor bioavailability which is a mediator of atherosclerosis. In this study we wanted to establish if Pregnancy associated plasma protein-A levels are increased in normal rats and if the Lipid profile was affected, if exposed to passive smoking. Sixty albino rats of Sprague-Dawley strain were used, weighing 200-250 gm. Both the groups were kept in identical chambers. One group of 30 rats was further exposed to cigarette smoke. Blood triglycerides were determined by enzymatic colorimetric method. In this animal study it was seen that smoking had no effect on (triglycesides), cholesterol, LDL and HDL levels. Smoke exposure has no effect on pregnancy associated plasma protein-A (PAPP-A) levels.