• Publications
  • Influence
Parabens as Urinary Biomarkers of Exposure in Humans
Background Parabens appear frequently as antimicrobial preservatives in cosmetic products, in pharmaceuticals, and in food and beverage processing. In vivo and in vitro studies have revealed weakExpand
  • 220
  • 20
Urinary Concentrations of Four Parabens in the U.S. Population: NHANES 2005–2006
Background Parabens are widely used as antimicrobial preservatives in cosmetics, pharmaceuticals, and food and beverage processing. Objectives We assessed exposure to methyl, ethyl, propyl, and butylExpand
  • 248
  • 19
  • PDF
Automated on-line column-switching HPLC-MS/MS method with peak focusing for measuring parabens, triclosan, and other environmental phenols in human milk.
Parabens (esters of p-hydroxybenzoic acid) and triclosan are widely used as preservatives and antimicrobial agents, respectively, in personal care products, pharmaceuticals, and food processing.Expand
  • 206
  • 11
Variability of Urinary Concentrations of Bisphenol A in Spot Samples, First Morning Voids, and 24-Hour Collections
Background: Human exposure to bisphenol A (BPA) is widespread. After exposure, BPA is rapidly metabolized and eliminated in urine. Therefore, there is considerable within-person and between-personExpand
  • 208
  • 11
  • PDF
Quantification of the urinary concentrations of parabens in humans by on-line solid phase extraction-high performance liquid chromatography-isotope dilution tandem mass spectrometry.
Parabens (alkyl esters of p-hydroxybenzoic acid) are widely used as antimicrobial preservatives in cosmetic products, pharmaceuticals, and food processing. However, weak estrogenicity of someExpand
  • 111
  • 4
Temporal stability of the conjugated species of bisphenol A, parabens, and other environmental phenols in human urine
Human exposure to environmental phenols can be assessed by measuring the urinary concentrations of these compounds or their metabolites. Total concentrations, which include both free and conjugatedExpand
  • 70
  • 1
A cluster of patients infected with I221V influenza b virus variants with reduced oseltamivir susceptibility--North Carolina and South Carolina, 2010-2011.
BACKGROUND During 2010-2011, influenza B viruses with a novel neuraminidase substitution, denoted I221V (B/I221V), associated with reduced in vitro oseltamivir susceptibility were detected in NorthExpand
  • 31
  • 1
  • PDF
Does the composition of urine change when collected from disposable diapers and other absorbent materials?
The free and conjugated urinary species of non-persistent environmental chemicals or their breakdown products are valid human exposure biomarkers. For convenience, disposable diapers and otherExpand
  • 9
Identification of Metabolites of 4-Nonylphenol Isomer 4-(3′,6′-Dimethyl-3′-Heptyl) Phenol by Rat and Human Liver Microsomes
Nonylphenol (NP) has been widely used for more than 50 years in the synthesis of NP ethoxylates, which are important nonionic surfactants. NP is considered an endocrine disruptor based on in vitroExpand
  • 9
  • PDF
Update: influenza activity --- United States, October 3-December 11, 2010.
During October 3-December 11, 2010, influenza activity remained low in most regions of the United States. Influenza viruses characterized thus far in the influenza season are well matched to theExpand
  • 3
  • PDF