The findings above point out that host factors may bias between-group comparisons and that they should be taken into account when describing relations between internal PCAH exposure and health effects.
We quantified polychlorinated biphenyls (PCBs; congeners 138, 153, and 180) in serum by gas chromatography and obtained the toxic equivalents (TEQs) of PCAHs in serum with the chemically activated luciferase gene expression bioassay (CALUX).
Determinants of serum PCAHs are well documented in newborns and young children (7, 8).
Briefly, the method involved n-hexane extraction of the sample and removal of acid-labile matrix components, fat, and nonstable PCAHs by passage through a silica column containing concentrated [H.
Working in Turnaround Arts schools over the past three years, it has been an honor to watch the passion-driven learning fueled by arts take hold, improving the lives of these students and the quality of their schools," said PCAH member and Turnaround Artist Yo-Yo Ma.
The PCAH works directly with the three primary cultural agencies-National Endowment for the Arts, the National Endowment for the Humanities and the Institute of Museum and Library Services-as well as other federal partners and the private sector, to address policy questions in the arts and humanities, to initiate and support key programs in those disciplines and to recognize excellence in the field.
We are proud of the progress Turnaround Arts schools have made so far and thrilled to be able to expand the program into more schools across the country," said PCAH Vice-Chair Mary Schmidt Campbell, Ph.
It's an honor to be part of this program," said actress and PCAH member Kerry Washington.
We estimated exposure to biologically active PCAHs via the in vitro activation of the aryl hydrocarbon (Ah) receptor of cultured H4IIE cells by the dioxin-like compounds present in 2.
Pubic hair growth and age of menarche were not significantly correlated with biomarkers of exposure to PCAHs.
To the best of our knowledge, our study provides the first epidemiologic evidence that environmental exposure to PCAHs may influence sexual maturation of adolescents without occupational or accidental exposure.
In 1993, Sharpe and Skakkebaek (8) hypothesized that xenoestrogens such as PCAHs may interfere with the development of Sertoli and Leydig cells during fetal development (Figure 3A).