Light, dark, and melatonin: emerging evidence for the importance of melatonin in ocular physiology

被引：35
作者：
Brennan, R.
Jan, J. E.
Lyons, C. J.
机构：
[1] British Columbia Childrens Hosp, Dept Ophthalmol, Vancouver, BC V6H 3V4, Canada
[2] British Columbia Childrens Hosp, Melatonin Res Grp, Mental Hlth Res Unit, Vancouver, BC V6H 3V4, Canada
来源：
EYE | 2007年 / 21卷 / 07期
关键词：
melatonin; circadian rhythms; retinal; ganglion cells; sleep;
D O I：
10.1038/sj.eye.6702597
中图分类号：
R77 [眼科学];
学科分类号：
100212 ;
摘要：
Melatonin is a hormone, which is mainly produced by the pineal gland, a vestigial eye. Rather than the rods and cones, it is a newly discovered subgroup of photosensitive retinal ganglion cells, which is responsible for mediating the light - dark cycles, thus regulating melatonin's secretion. One of the correlates of the circadian rhythm of melatonin release is the habitual sleep pattern. Patients with circadian rhythm sleep disorders, including some blind patients with no light- induced suppression of melatonin, benefit from melatonin treatment. Melatonin is synthesized in the retina, lens, ciliary body as well as other parts of the body. In this review, we discuss the physiological roles of melatonin in the eye, as well as the potential therapeutic avenues currently under study.
引用
收藏
页码：901 / 908
页数：8
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