𝔖 Bobbio Scriptorium
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Phototransduction molecules in the pigeon deep brain

✍ Scribed by Yasutaka Wada; Toshiyuki Okano; Yoshitaka Fukada

Book ID
101319693
Publisher
John Wiley and Sons
Year
2000
Tongue
English
Weight
298 KB
Volume
428
Category
Article
ISSN
0021-9967

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✦ Synopsis

Photoreceptive areas responsible for the regulation of photoperiodicity have been localized in the brain of some avian species. We found that immunoreactivities to rhodopsin and the ␣-subunit of rod-type transducin (Gt 1 ␣) were colocalized in cerebrospinal fluid (CSF) contacting neurons in the pigeon lateral septum, a possible site for photoreception. Furthermore, RT-PCR analyses showed specific gene expression of both cGMP-phosphodiesterase ␀-subunit and conetype cGMP-gated cation channel ␣-subunit in this region. These results suggest that several components in rod/cone photoreceptors compositely contribute to the deep encephalic phototransduction cascade.

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