Glutamic acid decarboxylase mRNA in the suprachiasmatic nucleus of rats housed in constant darkness |
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| Authors: | Huhman K L Jasnow A M Sisitsky A K Albers H E |
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| Affiliation: | Department of Psychology, Georgia State University, Atlanta 30303, USA. khuhman@gsu.edu |
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| Abstract: | This study demonstrates that the levels of the mRNAs encoding the two isoforms of glutamic acid decarboxylase (GAD) (i.e., GAD65 and GAD67) do not differ over the circadian activity cycle in the suprachiasmatic nucleus (SCN) of rats housed in constant darkness. These data indicate that the rhythmic expression of GAD56 mRNA previously observed in animals housed in a light:dark cycle [K.L. Huhman, A.C. Hennessey, H.E. Albers, Rhythms of glutamic acid decarboxylase mRNA in the suprachiasmatic nucleus, J. Biol. Rhythms 11 (1996) 311-316.] is the result of the activity of retinal afferents. |
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| Keywords: | Circadian GAD65 GAD67 SCN In situ hybridization GABA Rat |
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