Prenatal exposure to perfluoroalkyl substances modulates neonatal serum phospholipids, increasing risk of type 1 diabetes

Environ Int. 2020 Oct:143:105935. doi: 10.1016/j.envint.2020.105935. Epub 2020 Jul 4.

Abstract

In the last decade, increasing incidence of type 1 diabetes (T1D) stabilized in Finland, a phenomenon that coincides with tighter regulation of perfluoroalkyl substances (PFAS). Here, we quantified PFAS to examine their effects, during pregnancy, on lipid and immune-related markers of T1D risk in children. In a mother-infant cohort (264 dyads), high PFAS exposure during pregnancy associated with decreased cord serum phospholipids and progression to T1D-associated islet autoantibodies in the offspring. This PFAS-lipid association appears exacerbated by increased human leukocyte antigen-conferred risk of T1D in infants. Exposure to a single PFAS compound or a mixture of organic pollutants in non-obese diabetic mice resulted in a lipid profile characterized by a similar decrease in phospholipids, a marked increase of lithocholic acid, and accelerated insulitis. Our findings suggest that PFAS exposure during pregnancy contributes to risk and pathogenesis of T1D in offspring.

Keywords: Bile acids; Lipidomics; Mass spectrometry; PFAS; Type 1 diabetes.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Diabetes Mellitus, Experimental*
  • Diabetes Mellitus, Type 1*
  • Environmental Pollutants* / toxicity
  • Female
  • Finland / epidemiology
  • Fluorocarbons* / toxicity
  • Phospholipids
  • Pregnancy
  • Prenatal Exposure Delayed Effects* / epidemiology

Substances

  • Environmental Pollutants
  • Fluorocarbons
  • Phospholipids