0000000000807177

AUTHOR

S. Gerhold

showing 2 related works from this author

Fos-related antigen 2 (Fra-2) memorizes photoperiod in the rat pineal gland

2004

As the physiological role of fos-related antigen-2 (Fra-2) is largely unknown and since the pineal plays an important role in the photoperiodic control of the body, we have tested the hypothesis that Fra-2 expression is photoperiod-dependent and may be involved in imprinting photoperiod on the pineal gland and the body as a whole. To this end, we have investigated Fra-2 mRNA expression and Fra-2 protein expression under various light/dark (LD) cycles. A clear nocturnal increase occurs for both monitored parameters under all photoperiodic conditions studied. The level of Fra-2 protein expression clearly depends on photoperiod, because the amount of protein at dark onset and during the night …

Maleendocrine systemmedicine.medical_specialtyTime FactorsPhotoperiodBlotting WesternDeiodinaseFos-Related Antigen-2CREBPineal GlandRats Sprague-DawleyPhenylephrinePineal glandOrgan Culture TechniquesAcetyltransferasesInternal medicineCyclic AMPmedicineAnimalsDrug InteractionsProtein phosphorylationRNA MessengerCircadian rhythmCyclic GMPHeat-Shock ProteinsbiologyReverse Transcriptase Polymerase Chain ReactionGeneral NeuroscienceIsoproterenolAdrenergic beta-AgonistsAdaptation PhysiologicalPeptide FragmentsRatsDNA-Binding ProteinsEndocrinologymedicine.anatomical_structureGene Expression RegulationIodothyronine deiodinasebiology.proteinArylalkylamineFemaleAdrenergic alpha-Agonistshormones hormone substitutes and hormone antagonistsTranscription FactorsEndocrine glandNeuroscience
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Cyclic AMP-inducible genes respond uniformly to seasonal lighting conditions in the rat pineal gland

2006

The encoding of photoperiodic information ensues in terms of the daily profile in the expression of cyclic AMP (cAMP)-inducible genes such as the arylalkylamine N-acetyltransferase (AA-NAT) gene that encodes the rate-limiting enzyme in melatonin formation. In the present study, we compared the influence of the photoperiodic history on the cAMP-inducible genes AA-NAT, inducible cyclic AMP early repressor (ICER), fos-related antigen-2 (FRA-2), mitogen-activated protein kinase phosphatase-1 (MKP-1), nerve growth factor inducible gene-A (NGFI-A) and nerve growth factor inducible gene-B (NGFI-B) in the pineal gland of rats. For this purpose, we monitored the daily profiles of each gene in the sa…

Maleendocrine systemmedicine.medical_specialtyLightRepressorBiologyPineal GlandCyclic AMP Response Element ModulatorRats Sprague-DawleyPineal glandInternal medicineCyclic AMPmedicineAnimalsRNA MessengerCircadian rhythmProtein kinase AphotoperiodismReverse Transcriptase Polymerase Chain ReactionGeneral NeuroscienceCircadian RhythmRatsEndocrinologyNerve growth factormedicine.anatomical_structureGene Expression RegulationArylalkylamineFemalehormones hormone substitutes and hormone antagonistsEndocrine glandNeuroscience
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