View clinical trials related to Lead Poisoning.
Filter by:The aim of this study was to investigate the effects of chronic lead exposure on iron metabolism and the Nrf2-dependent ferroptosis pathway in lead acid battery factory workers
This is an exposure assessment pilot study tailored for families of construction workers living with a child. The investigators will compare home dust metal levels and resident's blood metal levels before and after an educational and environmental intervention. A baseline and a post intervention period assessment will be conducted with home and car lead inspections and risk assessments with collection of dust, urine, blood and toenail samples and a survey. Objectives of this research are to: 1. To characterize pre-intervention home exposures to lead and other metals in households with one construction worker inhabitant living with a child, by assessing household members' biospecimens and home dust metal levels. 2. To develop and evaluate customized home interventions (including environmental and educational approaches) to reduce metals exposure in three tiers of intervention. 3. To characterize home exposures to lead and other metals post intervention and determine adapted behaviors and whether the degree of metals exposure reduction (including take home exposures) in the households depends on the level of intervention.
This study is to supplement our internal data that demonstrates the continued performance of capillary blood samples on Magellan's lead testing systems: LeadCare II, LeadCare Ultra (which have been cleared previously by FDA), and PediaStat, which is an upgraded LeadCare II instrument in development.
One thousand patients with LHD who have no history of exposure to lead will be observed for 18 months. Blood lead level(BLL), biochemical data, hemoglobin, albumin, Cr, high sensitivity C-reactive protein (HsCRP), and blood cell counts are assessed at baseline. The morbidity and mortality are recorded in detail. Then, one hundred subjects with high BLL (>20μg/dl) will be randomly assigned to the study and control groups. For 3-6 months, the 50 patients in the study group will receive lead-chelation therapy with calcium disodium EDTA weekly until the BLB falls below BLL< 5 μg/dl, and the 50 control group patients receive weekly placebo for 12 weeks. During the ensuing 18 months, the BLL, biochemical data will be regularly followed up every 3 months. BLL is measured every 6 months. If BLL of the study group patients increase >10 μg/dl, the chelation therapy will be performed again until their BLL is <5 μg/dl. The primary end point is morbidity or mortality during the observation and follow-up period. A secondary end point is the change in hemoglobin, albumin, Cr and Hs CRP during the follow up period.