J D Johnston

Summary

Affiliation: University of Aberdeen
Country: UK

Publications

  1. ncbi Measuring seasonal time within the circadian system: regulation of the suprachiasmatic nuclei by photoperiod
    J D Johnston
    School of Biological Sciences, University of Aberdeen, Aberdeen, UK
    J Neuroendocrinol 17:459-65. 2005
  2. ncbi Photoperiod regulates multiple gene expression in the suprachiasmatic nuclei and pars tuberalis of the Siberian hamster (Phodopus sungorus)
    Jonathan D Johnston
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, AB24 2TZ, UK
    Eur J Neurosci 21:2967-74. 2005
  3. ncbi Heterogeneous regulation of individual lactotroph cells by photoperiod in the Syrian hamster (Mesocricetus auratus)
    Jonathan D Johnston
    School of Biological Sciences, University of Manchester, Manchester, UK
    Gen Comp Endocrinol 134:182-6. 2003
  4. ncbi Rhythmic melatonin secretion does not correlate with the expression of arylalkylamine N-acetyltransferase, inducible cyclic amp early repressor, period1 or cryptochrome1 mRNA in the sheep pineal
    J D Johnston
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
    Neuroscience 124:789-95. 2004
  5. ncbi Photoperiodic regulation of prolactin secretion: changes in intra-pituitary signalling and lactotroph heterogeneity
    J D Johnston
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
    J Endocrinol 180:351-6. 2004
  6. ncbi Evidence for an endogenous per1- and ICER-independent seasonal timer in the hamster pituitary gland
    Jonathan D Johnston
    School of Biological Sciences, University of Manchester, UK
    FASEB J 17:810-5. 2003
  7. ncbi Photoperiod differentially regulates circadian oscillators in central and peripheral tissues of the Syrian hamster
    Amanda Jayne F Carr
    School of Biological Sciences, University of Manchester, Oxford Road, M13 9P, Manchester, United Kingdom
    Curr Biol 13:1543-8. 2003
  8. ncbi Egr1 involvement in evening gene regulation by melatonin
    J M Fustin
    Aberdeen University, School of Biological Sciences, Department of Zoology, Tillydrone Avenue, Aberdeen, AB242TZ, Scotland, UK
    FASEB J 23:764-73. 2009
  9. ncbi Melatonin induces gene-specific effects on rhythmic mRNA expression in the pars tuberalis of the Siberian hamster (Phodopus sungorus)
    Gabriela C Wagner
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, UK
    Eur J Neurosci 25:485-90. 2007
  10. ncbi Redefining the limits of day length responsiveness in a seasonal mammal
    Gabriela C Wagner
    School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, United Kingdom
    Endocrinology 149:32-9. 2008

Collaborators

Detail Information

Publications19

  1. ncbi Measuring seasonal time within the circadian system: regulation of the suprachiasmatic nuclei by photoperiod
    J D Johnston
    School of Biological Sciences, University of Aberdeen, Aberdeen, UK
    J Neuroendocrinol 17:459-65. 2005
    ..This article reviews the evidence for photoperiodic regulation of circadian clock function and then discusses alternative models that may explain the available data...
  2. ncbi Photoperiod regulates multiple gene expression in the suprachiasmatic nuclei and pars tuberalis of the Siberian hamster (Phodopus sungorus)
    Jonathan D Johnston
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, AB24 2TZ, UK
    Eur J Neurosci 21:2967-74. 2005
    ....
  3. ncbi Heterogeneous regulation of individual lactotroph cells by photoperiod in the Syrian hamster (Mesocricetus auratus)
    Jonathan D Johnston
    School of Biological Sciences, University of Manchester, Manchester, UK
    Gen Comp Endocrinol 134:182-6. 2003
    ....
  4. ncbi Rhythmic melatonin secretion does not correlate with the expression of arylalkylamine N-acetyltransferase, inducible cyclic amp early repressor, period1 or cryptochrome1 mRNA in the sheep pineal
    J D Johnston
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
    Neuroscience 124:789-95. 2004
    ....
  5. ncbi Photoperiodic regulation of prolactin secretion: changes in intra-pituitary signalling and lactotroph heterogeneity
    J D Johnston
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, UK
    J Endocrinol 180:351-6. 2004
    ..Furthermore, the hypothesis that pituitary lactotroph cells display heterogeneity in their response to changing photoperiod and tuberalin secretion is examined...
  6. ncbi Evidence for an endogenous per1- and ICER-independent seasonal timer in the hamster pituitary gland
    Jonathan D Johnston
    School of Biological Sciences, University of Manchester, UK
    FASEB J 17:810-5. 2003
    ..Our data thus identify the PT as a key anatomical structure involved in endogenous seasonal timing mechanisms, which breaks from prevailing day length-induced gene expression...
  7. ncbi Photoperiod differentially regulates circadian oscillators in central and peripheral tissues of the Syrian hamster
    Amanda Jayne F Carr
    School of Biological Sciences, University of Manchester, Oxford Road, M13 9P, Manchester, United Kingdom
    Curr Biol 13:1543-8. 2003
    ..The clear dissociation between SCN and peripheral oscillators in refractory animals implicates intermediate factor(s), not directly driven by the SCN or melatonin, in entrainment of peripheral clocks...
  8. ncbi Egr1 involvement in evening gene regulation by melatonin
    J M Fustin
    Aberdeen University, School of Biological Sciences, Department of Zoology, Tillydrone Avenue, Aberdeen, AB242TZ, Scotland, UK
    FASEB J 23:764-73. 2009
    ..We propose that melatonin-dependent effects on EGR1-RE's contribute to evening gene expression profiles in this pituitary melatonin target tissue...
  9. ncbi Melatonin induces gene-specific effects on rhythmic mRNA expression in the pars tuberalis of the Siberian hamster (Phodopus sungorus)
    Gabriela C Wagner
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen, UK
    Eur J Neurosci 25:485-90. 2007
    ..Our data are consistent with the hypothesis that the hamster PT contains a damped endogenous circadian oscillator, which requires a rhythmic melatonin signal for long-term synchronization...
  10. ncbi Redefining the limits of day length responsiveness in a seasonal mammal
    Gabriela C Wagner
    School of Biological Sciences, University of Aberdeen, Aberdeen AB24 2TZ, United Kingdom
    Endocrinology 149:32-9. 2008
    ..This adaptive mechanism may be related to the latitude of origin and the timing of the seasonal transitions...
  11. ncbi Melatonin action in the pituitary: neuroendocrine synchronizer and developmental modulator?
    J D Johnston
    School of Biological Sciences, University of Aberdeen, 581 King Street, Aberdeen AB24 5UA, Scotland, UK
    J Neuroendocrinol 15:405-8. 2003
    ....
  12. ncbi Gonadotrophin-releasing hormone drives melatonin receptor down-regulation in the developing pituitary gland
    Jonathan D Johnston
    School of Biological Sciences, University of Aberdeen, Aberdeen AB24 5UA, United Kingdom
    Proc Natl Acad Sci U S A 100:2831-5. 2003
    ..These data suggest that establishment of a mature hypothalamic GnRH input drives the postnatal decline in pituitary MT(1) gene expression...
  13. ncbi Multiple effects of melatonin on rhythmic clock gene expression in the mammalian pars tuberalis
    Jonathan D Johnston
    School of Biological Sciences, University of Aberdeen, Scotland, UK
    Endocrinology 147:959-65. 2006
    ..Our results provide the first example of acute sensitivity of multiple clock genes to one endocrine stimulus and suggest that rising melatonin levels may reset circadian rhythms in the PT, independently of previous phase...
  14. ncbi Molecular characterization of the long-day response in the Soay sheep, a seasonal mammal
    David G Hazlerigg
    School of Biological Sciences, University of Aberdeen, Zoology Building, Tillydrone Avenue, Aberdeen AB24 2TZ, Scotland
    Curr Biol 14:334-9. 2004
    ..These data suggest that effects of melatonin on clock gene expression are pivotal events in the neuroendocrine response and that pars tuberalis cells can act as molecular calendars, carrying a form of "photoperiodic memory."..
  15. ncbi Regulation of MT melatonin receptor expression in the foetal rat pituitary
    J D Johnston
    School of Biological Sciences, University of Aberdeen, Tinnydrone Avenue, Aberdeen B24 2TZ, Scotland, UK
    J Neuroendocrinol 18:50-6. 2006
    ....
  16. ncbi Photoperiod differentially regulates gene expression rhythms in the rostral and caudal SCN
    David G Hazlerigg
    Curr Biol 15:R449-50. 2005
  17. ncbi Photorefractoriness in mammals: dissociating a seasonal timer from the circadian-based photoperiod response
    Gerald A Lincoln
    The Queen s Medical Research Instiute, 47 Little France Crescent, Edinburgh EH16 4TJ, Scotland, United Kingdom
    Endocrinology 146:3782-90. 2005
    ..Under constant photoperiod the two timers can dissociate, leading to the apparent refractory state...
  18. ncbi Photoperiod regulates clock gene rhythms in the ovine liver
    Hakan Andersson
    Medical Research Council, Human Reproductive Sciences Unit, Centre for Reproductive Biology, Edinburgh, Scotland, UK
    Gen Comp Endocrinol 142:357-63. 2005
    ..Thus, there are likely to be important species differences in the way the central and peripheral clockwork encodes external photoperiod...
  19. ncbi Regulation of the ovine MT1 melatonin receptor promoter: interaction between multiple pituitary transcription factors at different phases of development
    Jonathan D Johnston
    School of Biomedical and Molecular Sciences, University of Surrey, Guildford GU2 7XH, UK
    Mol Cell Endocrinol 268:59-66. 2007
    ..Furthermore, our data suggest that circadian variation in MT(1) gene expression does not depend upon the direct action of circadian clock genes on E-box cis-elements...