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Expression of Cry2 in the Chicken Pineal Gland
Author(s) -
Nagy Andras D.,
Seomangal Karishma,
Kommedal Siri,
Csernus Valer J.
Publication year - 2009
Publication title -
annals of the new york academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.712
H-Index - 248
eISSN - 1749-6632
pISSN - 0077-8923
DOI - 10.1111/j.1749-6632.2008.03640.x
Subject(s) - pineal gland , medicine , endocrinology , chemistry , biology , zoology , microbiology and biotechnology , melatonin
Pineal expression of Cry2 mRNA has been examined in chickens under normal (LD) and reversed (DL) light–dark conditions. In vivo the peak of Cry2 mRNA content at late subjective day under LD diminished after switching to a DL schedule. In vitro, Cry2 mRNA levels showed a steady decrease during light exposure at subjective night. Our data show that light‐sensitive clock components in the pinealocytes may be involved in the repression of Cry2 transcription at night, which may contribute to resetting the phase of the clock within 24 h.