Přestavba buněčného jádra v tyčinkách sítnice: Adaptace savců na noční vidění

Title:

Přestavba buněčného jádra v tyčinkách sítnice: Adaptace savců na noční vidění

Creator:

Němec, Pavel

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:62d135eb-6d01-48ed-950f-1c12290a0a34
uuid:62d135eb-6d01-48ed-950f-1c12290a0a34

Type:

article, model:article, and TEXT

Description:

Unique nuclear architecture of rod photoreceptor cells: adaptation to nocturnal vision. It has been recently shown, that nuclear architecture of rods differs fundamentally in nocturnal and diurnal mammals (Solovei et al., Cell 137(2), 356-368, 2009). The rods of diurnal retinae possess the conventional architecture with most heterochromatin situated at the nuclear periphery and euchromatin residing toward the nuclear inferior. The rods of nocturnal retinae have a unique inverted pattern where heterochromatin localizes in the nuclear centre, whereas euchromatin lines the nuclear border. The inverted rod nuclei act as collecting lenses that channel light toward light sensing rod outer segments. Other structural elements such as the Müller glial cells (Franze et al., PNAS, 104(20), 8287-8292, 2007) and rightly packed mitochondria in the inner photoreceptor segments also facilitate light transmission through the retins.

Language:

Czech

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Source:

Vesmír | 2010 Volume:89 (140) | Number:7-8

Harvested from:

CDK

Metadata only:

false