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Showing 1-11 of 11 trials
NCT05950386
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
NCT03256383
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.
NCT00013858
This study is designed to examine the effects of prenatal exposure to environmental contaminants on cognitive and behavioral development and physical growth in two groups of Inuit infants-one in Northern Quebec; the other in Greenland.
NCT01739166
Funded by the Ohio Department of Job and Family Services - Medicaid Technical Assistance and Policy Program (MEDTAPP), the "Child Health Excellence Center - a University-Practice-Public Partnership" (CHEC-UPPP) focuses on improving the health of Ohio's children in 3 target areas: 1) prevention of dental decay; 2) detection and management of overweight and obesity; and 3) lead screening. These topics represent critical public health issues for Ohio's children. The study is based on strong evidence that interventions are needed to improve practice in the target areas and that achieving these goals represents fundamental improvements in child health care that would reduce morbidity and costs. The approach for the study involves a trained Practice Facilitator (PF) working with multiple pediatric and family medicine practices to create change tailored to individual practice preferences and methods of operation. Our overall hypothesis is that a university-community consortium, utilizing evidence-based methods (involving education plus a facilitated, practice-tailored approach) will increase the rates of targeted services in primary care practices.
NCT00285610
Prior research indicates a link between early lead exposure and risk for delinquent behavior. In this study, we follow a large birth cohort from the Cincinnati Lead Study into early adulthood to determine whether this increased risk persists. Outcome measures include official arrest records, diagnoses of Substance Abuse Disorder and Antisocial Personality Disorder, self-report of delinquent behavior, and a psychopathy scale. Predictors include pre-natal and post-natal blood lead levels. Multivariate statistical methods will control for potential confounders/covariates.
NCT00931905
Saturnism, or lead poisoning, is defined by clinical symptoms (affecting primarily the nervous, hematopoietic, gastrointestinal, cardiovascular, musculoskeletal, renal and reproductive systems) compatible with exposure, in the short or long term, to lead or to its compounds, and can manifest as acute or chronic symptoms, pursuant to the intensity and duration of the signs and symptoms. Measuring serum concentration is the primary method for diagnosing and accompanying exposed workers. Presently, elevated lead counts are reversed by using drugs whose effectiveness is contested on various fronts. Experimental studies shows the efficacy of homeopathic preparations in controlling blood lead levels in laboratory animals, creating the need for controlled studies that evaluate the effectiveness and safety of these preparations in humans.The objective of this study was evaluate the effectiveness of the homeopathic preparation Plumbum metallicum in reducing the blood lead level of workers exposed to this metal.
NCT00374894
Lead poisoning remains a common disease among children despite successful public health efforts that reduced its prevalence.Our study was designed to test the hypothesis that lead-poisoning children (BLLs:100-440µg/L) who were given DMSA and multi-nutrients would have a greater fall than children of other groups at 12 weeks of follow-up.
NCT00011661
The purpose of this study is to examine whether adding an inter-generational component to an existing social network-based lay health advisor intervention increases its effectiveness in mobilizing a Native American community to respond to heavy metal contamination from lead and zinc mining.
NCT00011726
We are examining the role of maternal bone lead turnover during pregnancy and lactation as a potential source of lead exposure for the fetus and the infant (via breast milk). A cohort, ascertained at entry to care, consists of \>1000 women to be followed through pregnancy. In the postpartum subjects are recruited for a nested case control study to assess the influence of lactation on maternal bone density, maternal blood lead and breast milk lead.
NCT00023101
This prospective cohort study of 400 lead exposed and 400 non-lead exposed women and their husbands assesses endocrine dysfunction and adverse reproductive outcomes. Residing in two study areas in Shenyang, China, the women are married, 20 and 34 years of age, never smokers, have obtained permission to have a child, and have attempted to become pregnant over the course of the study. Lead exposure is defined by lead levels in blood samples collected at the baseline survey (both women and their husbands), first and second trimesters, and at delivery (both maternal and cord blood). Endocrine dysfunction is monitored by urinary hormone metabolites including follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrone conjugates (E1C), and pregnanediol-3-glucuronide (PdG). Reproductive endpoints include menstrual disturbance, time to conception, spontaneous abortion, preterm delivery, and low birth weight.
NCT00000104
Inner city children are at an increased risk for lead overburden. This in turn affects cognitive functioning. However, the underlying neuropsychological effects of lead overburden and its age-specific effects have not been well delineated. This study is part of a larger study on the effects of lead overburden on the development of attention and memory. The larger study is using a multi-model approach to study the effects of lead overburden on these effects including the event-related potential (ERP), electrophysiologic measures of attention and memory are studied. Every eight months, for a total of three sessions the subjects will complete ERP measures of attention and memory which require them to watch various computer images while wearing scalp electrodes recording from 11 sites. It is this test that we are going to be doing on CRC. There will be 30 lead overburdened children recruited from the larger study for participation in the ERP studies on CRC. These 30 children will be matched with 30 children without lead overburden. This portion of the study is important in providing an index of physiological functioning to be used along with behaviorally based measures of attention and memory, and for providing information about the different measures.