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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Toxicol+Sci
2014 ; 142
(1
): 158-66
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Autoantibodies associated with prenatal and childhood exposure to environmental
chemicals in Faroese children
#MMPMID25124724
Osuna CE
; Grandjean P
; Weihe P
; El-Fawal HA
Toxicol Sci
2014[Nov]; 142
(1
): 158-66
PMID25124724
show ga
Methylmercury, polychlorinated biphenyls (PCBs), and perfluorinated compounds
(PFCs) are ubiquitous and persistent environmental chemicals with known or
suspected toxic effects on the nervous system and the immune system. Animal
studies have shown that tissue damage can elicit production of autoantibodies.
However, it is not known if autoantibodies similarly will be generated and
detectable in humans following toxicant exposures. Therefore, we conducted a
pilot study to investigate if autoantibodies specific for neural and non-neural
antigens could be detected in children at age 7 years who have been exposed to
environmental chemicals. Both prenatal and age-7 exposures to mercury, PCBs, and
PFCs were measured in 38 children in the Faroe Islands who were exposed to widely
different levels of these chemicals due to their seafood-based diet.
Concentrations of IgM and IgG autoantibodies specific to both neural
(neurofilaments, cholineacetyltransferase, astrocyte glial fibrillary acidic
protein, and myelin basic protein) and non-neural (actin, desmin, and keratin)
antigens were measured and the associations of these autoantibody concentrations
with chemical exposures were assessed using linear regression. Age-7
blood-mercury concentrations were positively associated with titers of multiple
neural- and non-neural-specific antibodies, mostly of the IgM isotype.
Additionally, prenatal blood-mercury and -PCBs were negatively associated with
anti-keratin IgG and prenatal PFOS was negatively associated with anti-actin IgG.
These exploratory findings demonstrate that autoantibodies can be detected in the
peripheral blood following exposure to environmental chemicals. The unexpected
association of exposures with antibodies specific for non-neural antigens
suggests that these chemicals may have toxicities that have not yet been
recognized.