Global ETD Search
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Showing 1 to 20 of 40 for “"lead exposure"”.
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Low Level Lead Exposure and Postural Balance in Children
Background: The detrimental effects of lead exposure have been well documented. In children, it is linked to a decrease in IQ, damage to the nervous system, behavioral problems, slowed growth and poor neuromotor skills. It has been suggested there is no safe level of lead exposure.Objectives: The …
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Lead exposure in large carnivores in the greater Yellowstone ecosystem
Exposure to heavy metals is a potential challenge to the conservation of wildlife. One source of heavy metal exposure known to negatively affect avian wildlife is ingestion of lead rifle bullet fragments found in discarded hunter-harvested ungulate gut piles. Some large mammalian carnivores, such …
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Lead exposure in large carnivores in the greater Yellowstone ecosystem
Exposure to heavy metals is a potential challenge to the conservation of wildlife. One source of heavy metal exposure known to negatively affect avian wildlife is ingestion of lead rifle bullet fragments found in discarded hunter-harvested ungulate gut piles. Some large mammalian carnivores, such …
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Retinal development and age related degeneration following gestational lead exposure
PURPOSE: Gestational lead exposure (GLE) increased and prolonged retinal progenitor cell proliferation in mice, resulting in a dose-dependent increase in two late-born retinal neurons: rod photoreceptors and bipolar cells. The present goals were to examine: 1) the spatiotemporal differentiation and …
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Controlling Lead Exposure During the Process of Cleaning Aviation Spark Plugs
<p>This study examines the process of removing lead bromide from aircraft spark plugs and the health hazards associated with the present method of cleaning the lead bromide accumulation from aviation spark plugs. Aviation maintenance technicians can be inadvertently exposed to lead while cleaning …
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CHRONIC LOW-LEVEL LEAD EXPOSURE AFFECTS THE MONOAMINERGIC SYSTEM IN THE MOUSE SUPERIOR OLIVARY COMPLEX
Low-level lead (Pb) exposure is associated with behavioral and cognitive dysfunction. It is not clear how Pb produces these behavioral changes but low-level Pb exposure and learning disabilities have been associated with altered auditory temporal processing in both humans and animals. Temporal …
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CHRONIC LOW-LEVEL LEAD EXPOSURE AFFECTS THE MONOAMINERGIC SYSTEM IN THE MOUSE SUPERIOR OLIVARY COMPLEX
Low-level lead (Pb) exposure is associated with behavioral and cognitive dysfunction. It is not clear how Pb produces these behavioral changes but low-level Pb exposure and learning disabilities have been associated with altered auditory temporal processing in both humans and animals. Temporal …
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Environmental lead exposure among inner-city Cape Town children : a study of associated risk factors
Risk factors for lead exposure among children in South Africa have not been well documented. This study elucidated important factors which co-vary with lead in increasing children's risk of exposure. Two study designs were used. First, a cross-sectional analytical study involving first grade school …
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EVALUATING RISK OF LEAD EXPOSURE IN SCAVENGING SPECIES LINKED TO BIG-GAME HUNTING IN SASKATCHEWAN, CANADA
For free-ranging animals, chronic exposure to lead, a toxic heavy metal, can manifest in discrete physiological changes, alter behaviours, and contribute to increased mortality. In Canada, although lead ammunition has been banned for hunting waterfowl, carrion contaminated with lead fragments from …
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The Effects of Early-Life Lead Exposure on Adult Delta9-Tetrahydrocannabinol Sensitivity, Self-administration, and Tolerance
Environmental exposure to lead (Pb) and cannabis use are two of the largest public health issues facing modern society in the United States and around the world. Exposure to Pb in early life has been unequivocally shown to have negative impacts on development, and recent research is mounting …
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Evaluating the Efficacy of a Childhood Lead Poisoning Risk Model as an Accurate Predictor of Lead Exposure
<p>Lead poisoning is a significant public health problem with paint from old housing exposing thousands of children and leading to negative health and social outcomes. Identifying the highest risk children exposed to lead is important to public health agencies. The purpose of this study was to …
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Early life lead exposure as a risk factor for aggressive and violent behaviours in young adults: A retrospective systematic review
… of youth violence remains high. Early life lead exposure is a possible cause of aggressive and violent behaviour in young adults. Several aggregate-level and individual-level studies report an increase in risk of violent behaviour with increasing lead exposure. However, the evidence base for …
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Evaluation of erythrocyte amino levulinic acid dehydratase as an indicator of chronic lead exposure in wild populations of rainbow trout
… acid dehydratase (ALA-D) and liver and bone lead concentrations were measured in 141 wild rainbow trout from two highway-influenced and two pristine streams. A significant relationship between ALA-D activity and liver lead concentrations among streams (r = 0.157) was observed. However, this …
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Knowledge assessment of lead poisoning precautionary measures among women of child-bearing age in high lead exposure residential areas in Kabwe District
Lead poisoning contributes 0.9 per cent of developing countries’ disease burden. Lead poisoning is due to excessive lead exposure to the human body. In Zambia, Kabwe is one of the most affected towns due to its previous mining activities. Studies done by ZCCM-IH and others show that currently, 35 …
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Knowledge assessment of lead poisoning precautionary measures among women of child-bearing age in high lead exposure residential areas in Kabwe District
Lead poisoning contributes 0.9 per cent of developing countries’ disease burden. Lead poisoning is due to excessive lead exposure to the human body. In Zambia, Kabwe is one of the most affected towns due to its previous mining activities. Studies done by ZCCM-IH and others show that currently, 35 …
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Three Essays on Public Policy and Health
… chapters use the unexpected shock of water borne lead in Flint Community Schools’ classrooms to estimate the causal impacts of lead on students’ cognitive and behavioral outcomes. The first paper focuses on the short-run academic achievement of elementary school children. At the average level of …
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Low Blood Lead Levels, Parental Education, Physiological Stress, And Neurocognition: A Cohort Study
Lead is a well-known neurotoxicant, however, the neurocognitive and health consequences of low levels of exposure is less known. Furthermore, the disparities in lead-induced outcomes are not well understood, where children experiencing more psychosocial stressors seem to have greater deficits at …
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Assessment of a voluntary nonlead ammunition outreach program on midwestern national wildlife refuges
Lead exposure from spent hunting ammunition affects wildlife populations, human health, and poses challenges to natural resource management. In addition to existing data on this topic spanning >100-years, data from the Upper Midwestern, United States (U.S.) demonstrated bald eagles have greater …
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The Effects of Lead Acetate on Host Susceptibility to Trypanosoma Cruzi
… and their ability to act as immunosuppressants. Lead is of particular interest because it is widespread in places such as soil, food, water, batteries, paints, and plastics. Studies have shown lead exposure during bacterial and viral infection causes decreases in antibody production, T cell …
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A spatial analysis of Muncie's soils and playground dust associated with elevated blood lead levels
… from three studies investigating environmental lead (Pb) contamination in various environments in Muncie, Indiana, exploring the interaction of Pb with socio-economic conditions, soil properties, and Pb presence in playground soils and equipment. The first study examined the influence of …
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