Schraermeyer U
Institut für Biologie II (Zoologie), RWTH, Aachen, Germany.
Pigment Cell Res. 1993 Aug;6(4 Pt 1):193-204. doi: 10.1111/j.1600-0749.1993.tb00602.x.
This paper is a review of what is known about the turnover of melanin in iris, choroid, and retinal pigment epithelium (RPE) of the adult vertebrate eye. Differences in size and structure of choroideal and retinal pigment epithelial melanin granules are shown by electron micrographs. The classical stages of melanin synthesis, including the premelanosome, are shown in the RPE of adult hamsters that had been exposed to intense light. Degradation or synthesis of melanin also seem to occur in the melanocytes of the choroid in these animals. It is postulated that all three pigmented eye tissues (iris, RPE, and choroid) of adult vertebrates form melanin granules in vivo. However, nothing is known about the amount of this turnover.
本文是对成年脊椎动物眼睛虹膜、脉络膜和视网膜色素上皮（RPE）中黑色素周转情况的已知信息综述。电子显微镜照片显示了脉络膜和视网膜色素上皮黑色素颗粒在大小和结构上的差异。在暴露于强光下的成年仓鼠的RPE中显示了黑色素合成的经典阶段，包括前黑素体。在这些动物的脉络膜黑素细胞中似乎也发生黑色素的降解或合成。据推测，成年脊椎动物的所有三种色素性眼组织（虹膜、RPE和脉络膜）在体内形成黑色素颗粒。然而，关于这种周转量尚不清楚。
