期刊
JOURNAL OF COMPARATIVE NEUROLOGY
卷 519, 期 8, 页码 1492-1504出版社
WILEY
DOI: 10.1002/cne.22579
关键词
intrinsically photosensitive ganglion cell; circadian entrainment; melanopsin; patch clamp; retina; dendritic arborization; dendrite; synapse; On pathway; M3 cells
资金
- National Institutes of Health [R01EY012949, R21-EY018885, T32 EY0707133]
A subpopulation of retinal ganglion cells (RGCs) expresses the photopigment melanopsin, rendering these cells intrinsically photosensitive (ipRGCs). These cells are critical for competent circadian entrainment, pupillary light reflex, and other non-imaging-forming photic responses. Research has now demonstrated the presence of multiple subpopulations of ipRGC based on the dendritic stratification in the inner plexiform layer (IPL), those monostratified in the Off sublamina (M1), those monostratified in the On sublamina (M2,4,5), and those bistratified in both the On and the Off sublaminae (M3). Despite evidence that M1 and M2 cells are distinct subpopulations of ipRGC based on distinct morphological and physiological properties, the inclusion of M3 cells as a distinct subtype has remained controversial. Aside from the identification of M3 cells as a morphological subpopulation of ipRGC, to date there have been no functional descriptions of M3 cell physiology or synaptic inputs. Our data provide the first in-depth description of M3 cell structural and functional properties. We report that M3 cells form a morphologically heterogeneous population but one that is physiologically homogeneous with properties similar to those of M2 cells. J. Comp. Neurol. 519: 1492-1504, 2011. (C) 2010 Wiley-Liss, Inc.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据