Publications by authors named "A H Bolden"
In the United States, onshore oil and gas extraction operations generate an estimated 900 billion gallons of produced water annually, making it the largest waste stream associated with upstream development of petroleum hydrocarbons. Management and disposal practices of produced water vary from deep well injection to reuse of produced water in agricultural settings. However, there is relatively little information with regard to the chemical or toxicological characteristics of produced water.
View Article and Find Full Text PDFEnvironmental Chemicals and Autism: A Scoping Review of the Human and Animal Research.
Environ Health Perspect
April 2019
Background: Estimates of autism prevalence have increased dramatically over the past two decades. Evidence suggests environmental factors may contribute to the etiology of the disorder.
Objectives: This scoping review aimed to identify and categorize primary research and reviews on the association between prenatal and early postnatal exposure to environmental chemicals and the development of autism in epidemiological studies and rodent models of autism.
Background: In the last decade unconventional oil and gas (UOG) extraction has rapidly proliferated throughout the United States (US) and the world. This occurred largely because of the development of directional drilling and hydraulic fracturing which allows access to fossil fuels from geologic formations that were previously not cost effective to pursue. This process is known to use greater than 1,000 chemicals such as solvents, surfactants, detergents, and biocides.
View Article and Find Full Text PDFArticle Synopsis
- ADHD has become more common over the past decade, and while genetic factors have been researched, gene-environment interactions, particularly with environmental chemicals like bisphenol A (BPA), are suspected contributors.
- A systematic review and meta-analysis was conducted using the OHAT framework to explore the relationship between early BPA exposure and hyperactivity, a key indicator of ADHD, by analyzing existing literature.
- The review included 29 rodent studies and 3 human studies, finding that male rodents exposed to BPA showed significantly increased hyperactivity, and there was a noted association of early BPA exposure with hyperactive behaviors in humans.