Perfluoroalkyl substances and lipid concentrations in plasma during pregnancy among women in the Norwegian Mother and Child Cohort Study.
Environ Int
; 62: 104-12, 2014 Jan.
Article
en En
| MEDLINE
| ID: mdl-24189199
ABSTRACT
BACKGROUND:
Perfluoroalkyl substances (PFASs) are widespread and persistent environmental pollutants. Previous studies, primarily among non-pregnant individuals, suggest positive associations between PFAS levels and certain blood lipids. If there is a causal link between PFAS concentrations and elevated lipids during pregnancy, this may suggest a mechanism by which PFAS exposure leads to certain adverse pregnancy outcomes, including preeclampsia.METHODS:
This cross-sectional analysis included 891 pregnant women enrolled in the Norwegian Mother and Child (MoBa) Cohort Study in 2003-2004. Non-fasting plasma samples were obtained at mid-pregnancy and analyzed for nineteen PFASs. Total cholesterol, high-density lipoprotein (HDL) cholesterol, low-density lipoprotein cholesterol, and triglycerides were measured in plasma. Linear regression was used to quantify associations between each PFAS exposure and each lipid outcome. A multiple PFAS model was also fitted.RESULTS:
Seven PFASs were quantifiable in >50% of samples. Perfluorooctane sulfonate (PFOS) concentration was associated with total cholesterol, which increased 4.2mg/dL per inter-quartile shift (95% CI=0.8, 7.7) in adjusted models. Five of the seven PFASs studied were positively associated with HDL cholesterol, and all seven had elevated HDL associated with the highest quartile of exposure. Perfluoroundecanoic acid showed the strongest association with HDL HDL increased 3.7 mg/dL per inter-quartile shift (95% CI=2.5, 4.9).CONCLUSION:
Plasma concentrations of PFASs were positively associated with HDL cholesterol, and PFOS was positively associated with total cholesterol in this sample of pregnant Norwegian women. While elevated HDL is not an adverse outcome per se, elevated total cholesterol associated with PFASs during pregnancy could be of concern if causal.Palabras clave
BMI; CI; DAG; HDL; IQR; LDL; LOQ; MBRN; Medical Birth Registry of Norway; MoBa; Norwegian Mother and Child Cohort Study; PFASs; PFDA; PFHpS; PFHxS; PFNA; PFOA; PFOS; PFUnDA; Perfluoroalkyl substances; Perfluorooctane sulfonate; Perfluorooctanoic acid; The Norwegian Mother and Child Cohort Study; body mass index; confidence interval; directed acyclic graph; high-density lipoprotein; inter-quartile range; limit of quantification; low-density lipoprotein; perfluoroalkyl substances; perfluorodecanoic acid; perfluoroheptane sulfonate; perfluorohexane sulfonate; perfluorononanoic acid; perfluorooctane sulfonate; perfluorooctanoic acid; perfluoroundecanoic acid
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Contaminantes Ambientales
/
Lípidos
Tipo de estudio:
Etiology_studies
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Incidence_studies
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Observational_studies
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Prevalence_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Adult
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Female
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Humans
País/Región como asunto:
Europa
Idioma:
En
Revista:
Environ Int
Año:
2014
Tipo del documento:
Article
País de afiliación:
Estados Unidos