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Daily Archives for: January 28th, 2010

Studies indicate that environmental exposure to lead is associated with reduced renal function. Whether lead affects progressive diabetic nephropathy is unclear. Eighty-seven patients with type II diabetes and diabetic nephropathy (serum creatinine of 1.5–3.9 mg/dl) with normal body lead burden and no lead exposure history were observed over a 12-month period. Thirty subjects with high normal body lead burdens (80–600 µ

Background
A few recent studies have demonstrated heightened hypothalamic–pituitary–adrenal (HPA) axis reactivity to acute stress in animals exposed to heavy metal contaminants, particularly lead. However, Pb-induced dysregulation of the HPA axis has not yet been studied in humans.

Objective
In this study, we examined children’s cortisol response to acute stress (the glucocorticoid product of HPA activation) in relation to low-level prenatal and postnatal Pb exposure.

Objective:
Accumulating evidence suggests that nonoccupational exposures to lead may increase the risk for cardiovascular and neurologic outcomes such as hypertension and accelerated decline in cognition. Chronic low-level exposures, as measured by bone lead levels, are likely at least as important as acute exposures, as measured in blood lead. Elevated levels of plasma homocysteine (Hcy) are associated with cognitive decline and dementia,

OBJECTIVES. The purpose of this work was to assess the long-term impact of childhood lead exposure on the neurosubstrate of language function and brain organization.

METHODS. Young adults from the Cincinnati Lead Study were recruited to undergo functional magnetic resonance image scanning while performing a verb generation task. These subjects have been followed from birth through early childhood with extensive documentation of lead exposure,

Abstract
Parameters of semen quality, seminal plasma indicators of secretory function of the prostate and seminal vesicles, sex hormones in serum, and biomarkers of lead, cadmium, copper, zinc, and selenium body burden were measured in 240 Croatian men 19–52 years of age. The subjects had no occupational exposure to metals and no known other reasons suspected of influencing male reproductive function or metal metabolism.

In the Middle East, the major sources of lead exposure have been leaded gasoline, lead-contaminated flour from traditional stone mills, focal exposures from small battery plants and smelters, and kohl (blue color) in cosmetics. In 1998–2000, we measured blood lead (PbB) levels in children 2–6 years of age in Israel, Jordan, and the Palestinian Authority (n = 1478),

Abstract
Lead remains one of the most hazardous toxins in our environment. Because the toxic effects of lead are most prominent during early development, it is important to develop a suitable biomarker for lead exposure during the pre- and neonatal periods. In the present study, the spatial distribution of lead was measured in the enamel and dentine of ten human primary teeth using laser ablation-inductively coupled plasma-mass spectrometry.