To determine whether current environmental lead (Pb) levels are causing any progressive changes in urinary Pb levels, 24-h urine samples were collected from 277 subjects (159 men and 118 women) in 1985, 312 subjects (155 men and 157 women) in 1993, and 311 subjects (156 men and 155 women) in 1998. All of the subjects worked in the same factory. The urinary Pb concentration was analyzed by flame...

turfgrasses are usually important groundcover plants in many landscapes. they occupy the lowest surface of the landscape, close to pollutant particles. so, they can be an attractive option for environmental remediation. today, high concentrations of hazardous chemicals such as lead are among the most serious environmental problems. in vitro selection of turfgrass accumulator or tolerant of toxi...

The pathogenic Bacillus cereus strain XS0724 isolated from China can cause high lethality to Trionyx sinensis, but little information is available on their detailed interactions. In this study, histopathologic profiling indicated that B. caused vacuolization and cell necrosis in the liver, spleen, kidney, intestine. identification of virulence factor genes non-hemolytic enterotoxin (Nhe), hemol...

BACKGROUND Childhood lead poisoning has not made the list of national public health priorities in Lebanon. This study aims at identifying the prevalence and risk factors for elevated blood lead concentrations (B-Pb >or= 100 microg/L) among 1-3 year old children. It also examines the need for universal blood lead screening. METHODS This is a cross-sectional study of 281 well children, presenti...

BACKGROUND Lead (Pb) is a toxic element that occurs in elevated concentrations in soils, mostly as a result of anthropogenic activities. This study assess the Pb bioavailability in soils from two areas with different contamination level using Diffusive Gradients in Thin-Films (DGT) technique, single extractions and metal contents of vegetables grown on contaminated soils. RESULTS In the area ...

INTRODUCTION To assess the salivary composition of proteins and minerals in smokers compared with non-smokers. MATERIALS AND METHODS In this study we compared the total protein and Ca, Na, K, Mg, Pb of whole saliva in two groups of men (28 smokers and 31nonsmokers) aged between 29-41years. RESULTS Fifty-nine participants were evaluated. The mean age was 33.14±5.32 years among smokers and 32...

Blood lead among pregnant women, even at modest levels, may impair offspring cognitive development. We examine whether blood lead levels (BLLs) result from current versus historic exposures, among a cohort of pregnant women. Cumulative logit models were used to characterize the relationship between maternal risk factors and higher BLLs. Maternal blood lead levels more likely result from lead re...

Geogenic and anthropogenic activities introduce certain metals into the environment which tend to deteriorate the quality of both surface and groundwater in the Bosomtwe Crater Lake and its surroundings. In this study spatio-temporal variations in concentrations and risk assessment of selected trace metals (As, Fe, Pb, Zn, Cr, Cd and Ni) were investigated during the wet and dry seasons for surf...