Vitamin A cycle byproducts impede dark adaptation.
Vitamin A cycle byproducts impede dark adaptation.
复制标题
DOI:
10.1016/j.jbc.2021.101074
复制
发表时间:
2021-09
期刊:
影响因子:
--
通讯作者:
Washington I
中科院分区:
文献类型:
--
作者:
Zhang D;Robinson K;Saad L;Washington I
Impaired dark adaptation (DA), a defect in the ability to adjust to dimly lit settings, is a universal hallmark of aging. However, the mechanisms responsible for impaired DA are poorly understood. Vitamin A byproducts, such as vitamin A dimers, are small molecules that form in the retina during the vitamin A cycle. We show that later in life, in the human eye, these byproducts reach levels commensurate with those of vitamin A. In mice, selectively inhibiting the formation of these byproducts, with the investigational drug C20D3-vitamin A, results in faster DA. In contrast, acutely increasing these ocular byproducts through exogenous delivery leads to slower DA, with otherwise preserved retinal function and morphology. Our findings reveal that vitamin A cycle byproducts alone are sufficient to cause delays in DA and suggest that they may contribute to universal age-related DA impairment. Our data further indicate that the age-related decline in DA may be tractable to pharmacological intervention by C20D3-vitamin A.
登录
查看更多内容
影响因子:
--
作者:
Hecht, S;Mandelbaum, J
通讯作者:
Mandelbaum, J
影响因子:
4.8
作者:
Iriyama, Aya;Fujiki, Ryoji;Yanagi, Yasuo
通讯作者:
Yanagi, Yasuo
影响因子:
4.8
作者:
Kaufman, Yardana;Ma, Li;Washington, Ilyas
通讯作者:
Washington, Ilyas
影响因子:
13.7
作者:
Lains, Ines;Miller, John B.;Husain, Deeba
通讯作者:
Husain, Deeba
影响因子:
1.4
作者:
Gaffney, Allannah J.;Binns, Alison M.;Margrain, Tom H.
通讯作者:
Margrain, Tom H.