[Level of cadmium and zinc in placenta of smoking women].

One possible mechanism of lowering of the birth weight by tobacco smoke is disturbance in zinc transfer trough placenta caused by accumulation of cadmium in placenta. The aim of the study was determination of cadmium and zinc in placenta of smoking women and correlation its with cotinine concentration and birth weight The study shown that concentration of cotinine in urine of smoking woman was 859+/-1234 ng/mg creatinine. Cadmium and zinc concentrations in smokers were higher (Cd 0.