the objective of this experiment was to determine the effect of long-term low-dose administration of lead (pb) on thyroid function in sheep. in this experiment 10 healthy iranian male sheep, aged about oneyear- old were randomly allocated into two equal groups of control (n = 5) and experiment (n = 5). both groups were kept under the same conditions of food and environment. the treatment group ...

Lead (Pb) is a persistent and common environmental contaminant that can be detected in all phases of biological system. The present study was designed to investigate the lead acetate [Pb(C2H3O2)2] induced histological changes in heart. Normal healthy looking mice showing no sign of morbidity were divided into three groups. Group I was designated as control whereas group II and group III receive...

Present study deals with effect of Vit. C against lead toxicity animals were divided into three groups of six rats each. One group of served as control which received only vehicle, second group was given lead acetate at a dose level of 0.3mg/ml for 7, 14 days chronically and third group received Vit. C (0.15mg/100ml) along with lead acetate and result were analyzed for hematological parameter i...

This work describes that cytotoxicity of lead chloride and lead acetate to in vitro cultured lymphocytes from human umbilical cord blood, using four monitoring methods namely, trypan blue staining, acridine orange/ethidium bromide staining, 3-[4,5-dimethylthiazol-2-yl] 2,5-diphenyl tetrazolium bromide (MTT) and neutral red uptake assays; lead genotoxicity to lymphocytes was monitored by comet a...

Introduction:In the nuclear medicine departments, staff exposure to radiation is inevitable during patient positioning and radiopharmaceutical preparation. There is controversy regarding the use of usual lead aprons with respect to penetrating gamma rays used in nuclear medicine departments as well as production of characteristic lead x-ray from aprons. Methods:</stron...

Background: This study was conducted to investigate whether vitamin C can protect against plasma biochemical changes induced by lead poisoning in Cyprinus carpio. Methods: Three groups of common carp (n=30/group) were used in this study. Group 1 served as control, Group 2 was exposed to lead acetate (5 mg/L) for 15 days, and Group 3 received vitamin C (500 mg/kg) during the same duration of ...