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Feline health
PBDEs and feline hyperthyroidism
  1. Keshuan Chow1,
  2. Julia A. Beatty1,
  3. Vanessa R. Barrs1,
  4. Laurence K. Hearn2 and
  5. Max Zuber3
  1. 1Valentine Charlton Cat Centre, University of Sydney, New South Wales 2006, Australia
  2. 2National Research Centre for Environmental Toxicology, University of Queensland, 39 Kessels Road, Coopers Plains, Queensland 4108, Australia
  3. 3Gladesville Veterinary Hospital, 449 Victoria Road, Gladesville, New South Wales 2111, Australia
  1. e-mail: keshuanchow{at}

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THE recent Viewpoint article by Hill and Shaw (VR, September 6, 2014, vol 175, pp 228-229) raises interesting questions about the contribution of environmental factors in the development of feline hyperthyroidism, a condition which has increased exponentially since first being described as a clinical disease in the late 1970s (Peterson and others 1979). Our research has sought to investigate a potential link between polybrominated diphenyl ethers (PBDEs) and feline hyperthyroidism (Chow and others 2014). PBDEs are flame-retardants, whose introduction in the late 1970s coincides temporally with the recognition (and increasing frequency) of feline hyperthyroidism (Dye and others …

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