Regulation of Retinal Photoreceptor Phagocytosis in a Diurnal Mammal by Circadian Clocks and Ambient Lighting

2009 ◽  
Vol 50 (7) ◽  
pp. 3495 ◽  
Author(s):  
Corina Bobu ◽  
David Hicks
Keyword(s):  
Circadian Clocks ◽  
Retinal Photoreceptor ◽  
Ambient Lighting ◽  
Diurnal Mammal

Spindle shaped bodies in foveolar cones of the baboon retina

1989 ◽  
Vol 47 ◽  
pp. 960-961
Author(s):  
W. Krebs ◽  
I. Krebs
Keyword(s):  
Cross Sections ◽  
Inclusion Bodies ◽  
Photoreceptor Cells ◽  
Papio Anubis ◽  
Retinal Photoreceptor ◽  
Age Related ◽  
Cone Cells ◽  
Membrane Bound ◽  
Oriented Parallel ◽  
Shaped Inclusion

Various inclusion bodies occur in vertebrate retinal photoreceptor cells. Most of them are membrane bound and associated with phagocytosis or they are age related residual bodies. We found an additional inclusion body in foveal cone cells of the baboon (Papio anubis) retina.The eyes of a 15 year old baboon were fixed by immersion in cacodylate buffered glutaraldehyde (2%)/formaldehyde (2%) as described in detail elsewhere . Pieces of retina from various locations, including the fovea, were embedded in epoxy resin such that radial or tangential sections could be cut.Spindle shaped inclusion bodies were found in the cytoplasm of only foveal cones. They were abundant in the inner segments, close to the external limiting membrane (Fig. 1). But they also occurred in the outer fibers, the perikarya, and the inner fibers (Henle’s fibers) of the cone cells. The bodies were between 0.5 and 2 μm long. Their central diameter was 0.2 to 0. 3 μm. They always were oriented parallel to the long axis of the cone cells. In longitudinal sections (Figs. 2,3) they seemed to have a fibrous skeleton that, in cross sections, turned out to consist of plate-like (Fig.4) and tubular profiles (Fig. 5).

scholarly journals Getting into rhythm: developmental emergence of circadian clocks and behaviors

FEBS Journal ◽  
2021 ◽  
Author(s):  
Amy R. Poe ◽  
Kyla D. Mace ◽  
Matthew S. Kayser
Keyword(s):  
Circadian Clocks ◽  
And Behaviors

scholarly journals The development of and recovery from form-deprivation myopia in infant rhesus monkeys reared under reduced ambient lighting

2021 ◽  
Vol 183 ◽  
pp. 106-117
Author(s):  
Zhihui She ◽  
Li-Fang Hung ◽  
Baskar Arumugam ◽  
Krista M. Beach ◽  
Earl L. Smith
Keyword(s):  
Rhesus Monkeys ◽  
Ambient Lighting ◽  
Infant Rhesus

On the Adaptive Significance of Circadian Clocks for Their Owners

2013 ◽  
Vol 30 (4) ◽  
pp. 413-433 ◽  
Author(s):  
Koustubh M. Vaze ◽  
Vijay Kumar Sharma
Keyword(s):  
Adaptive Significance ◽  
Circadian Clocks
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