Hemodynamic Effect of Indium Chloride in Pregnant Rats

Abstract

Daily indium chloride doses of control (0) or 200 mg/kg were administered orally to pregnant Sprague-Dawley (SD) rats by gavage, on d 6-15 of gestation. On d 16 of gestation hemodynamic tests were performed; Arterial blood pressure, cardiac output (CO), and volume organ blood flow were determined with radioactive microspheres using the reference sample method (McDevitt & Nies, 1976). Indium chloride increased the cardiac index (CI), but did not change arterial blood pressure and total peripheral resistance (TPR). Indium decreased the organ fractions of the cardiac output to kidneys, ovaries, uterus, and placenta, while those to brain, lungs, and liver were not affected. In the placenta the blood flow was reduced significantly while the vascular resistance increased. The blood flow and vascular resistance did not change in the rest of the organs studied. The changes in arterial blood pressure, CO, Cl, TPR, organ fraction of cardiac output, blood flow, and vascular resistance in most of the organs displayed normal responsiveness to noradrenaline (NA) infusion. The reduction of uterine and placenta fractions and placental blood flow, produced by NA infusion were significantly greater in control than in the indium-treated group. Data indicate that the hemodynamic changes induced by indium are detrimental to the fetus. Indium chloride exposure modifies the maternal effect of noradrenaline such that there is maternal survival at the expense of fetal mortality.

Histological Changes on the Lung of the Offspring From Mothers Treated With Uranyl Acetate in Albino Rats

“…(1)). These results are consistent with (12) the main reason of this loss in b.w at this age is totally depending on mother ' s milk which contain U.A from exposed females (13), before that passes across the placenta during the pregnancy (14).…”

Selective Sequential Dissolution for the Determination of Inorganic Indium Compounds in the Particulate Matter of Emissions and Workplace Air

“…3 Many studies have been performed on the toxicity of different compounds of indium on test animals. [4][5][6] It has been recognized that toxicity depends on the physicochemical form in which it is administered. For example, exposure to InCl3 induces DNA laddering 7 and the alteration of cellular heme metabolism in mammalian liver.…”