Oscillatory potentials in electroretinogram as an early marker of visual abnormalities in vitamin A deficiency

  • Authors:
    • Dai Kakiuchi
    • Taisuke Uehara
    • Motohiro Shiotani
    • Kyoko Nakano‑Ito
    • Akiyoshi Suganuma
    • Toyohiko Aoki
    • Kazuo Tsukidate
    • Kohei Sawada
  • View Affiliations

  • Published online on: November 3, 2014     https://doi.org/10.3892/mmr.2014.2852
  • Pages: 995-1003
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Abstract

Vitamin A deficiency (VAD) caused by malnutrition and certain intestinal diseases induces visual impairments, including night blindness and photoreceptor cell dysfunction as indicated by reduced a‑ and b‑waves in an electroretinogram (ERG). The effects of VAD on the inner retinal layer cells, including amacrine and ganglion cells, remain to be elucidated. The functions of these cells are reflected in oscillatory potentials (OPs), another component of the ERG. The present study investigated inner retinal layer cell function in VAD rats by analyzing OPs. In the present study, VAD was induced by feeding Brown Norway rats a vitamin A deficient diet for 10 weeks. A reduced body weight and peri‑papillary opacification indicative of papilledema without histopathological alterations were observed, which are considered early symptoms of VAD. At this stage, the ERG revealed reduced OPs as well as a‑ and b‑waves at various intensities of light stimulation. Further analysis indicated that the ratio of the alterations in OPs was more significant than those of a‑ and b‑waves. After 5 weeks of recovery, these changes returned to control levels. These results suggest that OPs are the most sensitive and early marker of VAD‑associated visual impairment in the ERG.
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February-2015
Volume 11 Issue 2

Print ISSN: 1791-2997
Online ISSN:1791-3004

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Spandidos Publications style
Kakiuchi D, Uehara T, Shiotani M, Nakano‑Ito K, Suganuma A, Aoki T, Tsukidate K and Sawada K: Oscillatory potentials in electroretinogram as an early marker of visual abnormalities in vitamin A deficiency. Mol Med Rep 11: 995-1003, 2015.
APA
Kakiuchi, D., Uehara, T., Shiotani, M., Nakano‑Ito, K., Suganuma, A., Aoki, T. ... Sawada, K. (2015). Oscillatory potentials in electroretinogram as an early marker of visual abnormalities in vitamin A deficiency. Molecular Medicine Reports, 11, 995-1003. https://doi.org/10.3892/mmr.2014.2852
MLA
Kakiuchi, D., Uehara, T., Shiotani, M., Nakano‑Ito, K., Suganuma, A., Aoki, T., Tsukidate, K., Sawada, K."Oscillatory potentials in electroretinogram as an early marker of visual abnormalities in vitamin A deficiency". Molecular Medicine Reports 11.2 (2015): 995-1003.
Chicago
Kakiuchi, D., Uehara, T., Shiotani, M., Nakano‑Ito, K., Suganuma, A., Aoki, T., Tsukidate, K., Sawada, K."Oscillatory potentials in electroretinogram as an early marker of visual abnormalities in vitamin A deficiency". Molecular Medicine Reports 11, no. 2 (2015): 995-1003. https://doi.org/10.3892/mmr.2014.2852