J Balthazart

Summary

Country: Belgium

Publications

  1. ncbi Preoptic aromatase modulates male sexual behavior: slow and fast mechanisms of action
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 17 Place Delcour Bat L1, B 4020 Liege, Belgium
    Physiol Behav 83:247-70. 2004
  2. ncbi Estradiol, a key endocrine signal in the sexual differentiation and activation of reproductive behavior in quail
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, University of Liege, Liege, Belgium
    J Exp Zool A Ecol Genet Physiol 311:323-45. 2009
  3. ncbi Doublecortin as a marker of adult neuroplasticity in the canary song control nucleus HVC
    Jacques Balthazart
    University of Liege, Center for Cellular and Molecular Neurobiology, Belgium
    Eur J Neurosci 27:801-17. 2008
  4. ncbi Activation of luteinizing hormone secretion by photoperiod and social stimuli: different paths to the same destination
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 1 Avenue de l'Hopital (Bat B36, , Belgium
    Endocrinology 148:5611-3. 2007
  5. ncbi Topography in the preoptic region: differential regulation of appetitive and consummatory male sexual behaviors
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 1 Avenue de 1 Hôpital Bat B36, B 4000 Liege 1, Belgium
    Front Neuroendocrinol 28:161-78. 2007
  6. ncbi Expression of reelin, its receptors and its intracellular signaling protein, Disabled1 in the canary brain: relationships with the song control system
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Behavioral Neuroendocrinology Research Group, University of Liege, Avenue de l Hopital 1 B36, Liege Sart Tilman, Belgium
    Neuroscience 153:944-62. 2008
  7. ncbi Is brain estradiol a hormone or a neurotransmitter?
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, University of Liege, B 4000 Liege, Belgium
    Trends Neurosci 29:241-9. 2006
  8. ncbi Calcium-dependent phosphorylation processes control brain aromatase in quail
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, University of Liege, 17 Place Delcour Bat L1, B 4020 Liege, Belgium
    Eur J Neurosci 17:1591-606. 2003
  9. ncbi Rapid changes in production and behavioral action of estrogens
    J Balthazart
    University of Liege, Center for Cellular and Molecular Neurobiology, Belgium
    Neuroscience 138:783-91. 2006
  10. ncbi Rapid control of brain aromatase activity by glutamatergic inputs
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4000 Liege 1, Belgium
    Endocrinology 147:359-66. 2006

Collaborators

Detail Information

Publications108 found, 100 shown here

  1. ncbi Preoptic aromatase modulates male sexual behavior: slow and fast mechanisms of action
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 17 Place Delcour Bat L1, B 4020 Liege, Belgium
    Physiol Behav 83:247-70. 2004
    ..Rapid and slower changes of brain AA match well with these two modes of estrogen action and provide temporal variations in the estrogen's bioavailability that can support the entire range of established effects for this steroid...
  2. ncbi Estradiol, a key endocrine signal in the sexual differentiation and activation of reproductive behavior in quail
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, University of Liege, Liege, Belgium
    J Exp Zool A Ecol Genet Physiol 311:323-45. 2009
    ....
  3. ncbi Doublecortin as a marker of adult neuroplasticity in the canary song control nucleus HVC
    Jacques Balthazart
    University of Liege, Center for Cellular and Molecular Neurobiology, Belgium
    Eur J Neurosci 27:801-17. 2008
    ..The DCX gene may be one of the targets by which testosterone and social stimuli induce seasonal changes in the volume of song nuclei...
  4. ncbi Activation of luteinizing hormone secretion by photoperiod and social stimuli: different paths to the same destination
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 1 Avenue de l'Hopital (Bat B36, , Belgium
    Endocrinology 148:5611-3. 2007
  5. ncbi Topography in the preoptic region: differential regulation of appetitive and consummatory male sexual behaviors
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 1 Avenue de 1 Hôpital Bat B36, B 4000 Liege 1, Belgium
    Front Neuroendocrinol 28:161-78. 2007
    ..It could thus reflect general principles about POA organization and function in the vertebrate brain...
  6. ncbi Expression of reelin, its receptors and its intracellular signaling protein, Disabled1 in the canary brain: relationships with the song control system
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Behavioral Neuroendocrinology Research Group, University of Liege, Avenue de l Hopital 1 B36, Liege Sart Tilman, Belgium
    Neuroscience 153:944-62. 2008
    ....
  7. ncbi Is brain estradiol a hormone or a neurotransmitter?
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, University of Liege, B 4000 Liege, Belgium
    Trends Neurosci 29:241-9. 2006
    ..In this article, we develop the hypothesis that brain estrogens display many, if not all, functional characteristics of neuromodulators or even neurotransmitters...
  8. ncbi Calcium-dependent phosphorylation processes control brain aromatase in quail
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, University of Liege, 17 Place Delcour Bat L1, B 4020 Liege, Belgium
    Eur J Neurosci 17:1591-606. 2003
    ..e. PKC and PKA). This suggests that the phosphorylation of one or both of these residues represents the mechanism underlying, at least in part, the rapid changes in aromatase activity...
  9. ncbi Rapid changes in production and behavioral action of estrogens
    J Balthazart
    University of Liege, Center for Cellular and Molecular Neurobiology, Belgium
    Neuroscience 138:783-91. 2006
    ..Estrogens produced locally in the brain should therefore be considered not only as neuroactive steroids but they also display many (if not all) functional characteristics of neuromodulators and perhaps neurotransmitters...
  10. ncbi Rapid control of brain aromatase activity by glutamatergic inputs
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4000 Liege 1, Belgium
    Endocrinology 147:359-66. 2006
    ....
  11. ncbi The neuroendocrinology of reproductive behavior in Japanese quail
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 17 Place Delcour Bat L1, B 4020 Liege, Belgium
    Domest Anim Endocrinol 25:69-82. 2003
    ..The physiological significance of these slow genomic and rapid, presumably non-genomic, changes in brain aromatase activity are also briefly discussed...
  12. ncbi Multiple mechanisms control brain aromatase activity at the genomic and non-genomic level
    Jacques Balthazart
    Research Group in Behavioral Neuroendocrinology, Center for Cellular and Molecular Neurobiology, University of Liege, 17 Place Delcour Bat L1, Liege B 4020, Belgium
    J Steroid Biochem Mol Biol 86:367-79. 2003
    ..These two processes potentially provide sufficient temporal variation in the bio-availability of estrogens to support the entire range of established effects for this steroid...
  13. ncbi Interactions between kinases and phosphatases in the rapid control of brain aromatase
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, University of Liege, Liege, Belgium
    J Neuroendocrinol 17:553-9. 2005
    ....
  14. ncbi Effects of calmodulin on aromatase activity in the preoptic area
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, Liege, Belgium
    J Neuroendocrinol 17:664-71. 2005
    ....
  15. ncbi The underestimated role of olfaction in avian reproduction?
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, Liege, Belgium
    Behav Brain Res 200:248-59. 2009
    ..Experimental analysis of this phenomenon is thus warranted and should lead to a significant change in our understanding of avian biology...
  16. ncbi Interactions between aromatase (estrogen synthase) and dopamine in the control of male sexual behavior in quail
    Jacques Balthazart
    University of Liege, Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, 17 Place Delcour Bat L1, B 4020 Liege, Belgium
    Comp Biochem Physiol B Biochem Mol Biol 132:37-55. 2002
    ..We review here the experimental data supporting the existence of these controls of aromatase activity by dopamine and discuss the possible contribution of these controls to the activation of male sexual behavior...
  17. ncbi Behavioral effects of brain-derived estrogens in birds
    Jacques Balthazart
    Center for Cellular and Molecular Neurobiology, University of Liege, Liege, Belgium
    Ann N Y Acad Sci 1163:31-48. 2009
    ..Brain estrogens thus affect behavior on different time scales by genomic and nongenomic mechanisms similar to those of a hormone or a neurotransmitter...
  18. ncbi Anatomical relationships between aromatase and tyrosine hydroxylase in the quail brain: double-label immunocytochemical studies
    J Balthazart
    University of Liege, Laboratory of Biochemistry, Belgium
    J Comp Neurol 391:214-26. 1998
    ..The few cells exhibiting an intracellular colocalization were detected in the anteroventral periventricular nucleus. These results are consistent with the hypothesis that catecholaminergic inputs regulate brain aromatase...
  19. ncbi Minireview: Hormones and human sexual orientation
    Jacques Balthazart
    University of Liege, Groupe Interdisciplinaire de Génoprotéomique Appliquée Neurosciences, Research Group in Behavioral Neuroendocrinology, 1 avenue de l hopital B36, B 4000 Liege, Belgium
    Endocrinology 152:2937-47. 2011
    ..How these biological prenatal factors interact with postnatal social factors to determine life-long sexual orientation remains to be determined...
  20. ncbi Sex steroid-induced neuroplasticity and behavioral activation in birds
    Jacques Balthazart
    University of Liege, GIGA Neurosciences, Research Group in Behavioral Neuroendocrinology, Avenue de l Hopital, 1 BAT B36, B 4000 Liege 1, Belgium
    Eur J Neurosci 32:2116-32. 2010
    ..Together, these data illustrate the high degree of plasticity that extends into adulthood and is characteristic of avian brain structures. Many questions still remain concerning the regulation and specific function of this plasticity...
  21. ncbi Differential effects of D1 and D2 dopamine-receptor agonists and antagonists on appetitive and consummatory aspects of male sexual behavior in Japanese quail
    J Balthazart
    European Graduate School of Neuroscience EURON, Laboratory of Biochemistry, University of Liege, Belgium
    Physiol Behav 62:571-80. 1997
    ....
  22. ncbi Effects of lesions of the medial preoptic nucleus on the testosterone-induced metabolic changes in specific brain areas in male quail
    J Balthazart
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, Belgium
    Neuroscience 108:447-66. 2001
    ....
  23. ncbi Aromatase inhibition blocks the activation and sexual differentiation of appetitive male sexual behavior in Japanese quail
    J Balthazart
    Laboratory of Biochemistry, University of Liege, Belgium
    Behav Neurosci 111:381-97. 1997
    ..Thus, ASB is demasculinized by the action of embryonic estrogens during ontogeny as is consummatory behavior...
  24. ncbi Phosphorylation processes mediate rapid changes of brain aromatase activity
    J Balthazart
    Research Group in Behavioral Neuroendocrinology, Center for Cellular and Molecular Neurobiology, 17 Place Delcour Bat L1, University of Liege, B 4020, Liege, Belgium
    J Steroid Biochem Mol Biol 79:261-77. 2001
    ..Locally-produced estrogens are as a consequence available for non-genomic regulation of neuronal physiology in a manner more akin to the action of a neuropeptide/neurotransmitter than previously thought...
  25. ncbi Anatomical relationships between aromatase-immunoreactive neurons and nitric oxide synthase as evidenced by NOS immunohistochemistry or NADPH diaphorase histochemistry in the quail forebrain
    Jacques Balthazart
    University of Liege, Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, 17 Place Delcour, B 4020 Liege, Belgium
    J Chem Neuroanat 25:39-51. 2003
    ..Based on previous work in a variety of model systems, it can be hypothesized that these inputs modulate the expression or activity of ARO in the quail brain...
  26. ncbi Distribution of aromatase-immunoreactive cells in the forebrain of zebra finches (Taeniopygia guttata): implications for the neural action of steroids and nuclear definition in the avian hypothalamus
    J Balthazart
    Laboratory of Biochemistry, University of Liege, Belgium
    J Neurobiol 31:129-48. 1996
    ..This widespread telencephalic distribution of cells immunoreactive for aromatase has not been described in non-songbird species such as the Japanese quail, the ring dove, and the domestic fowl...
  27. ncbi Male aromatase-knockout mice exhibit normal levels of activity, anxiety and "depressive-like" symptomatology
    C Dalla
    Center for Cellular and Molecular Neurobiology, University of Liege, Belgium
    Behav Brain Res 163:186-93. 2005
    ....
  28. ncbi Rapid decreases in preoptic aromatase activity and brain monoamine concentrations after engaging in male sexual behavior
    C A Cornil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, , Belgium
    Endocrinology 146:3809-20. 2005
    ..Sexual interactions with the female decreased aromatase and dopamine activities. These data challenge established views about the causal relationships among dopamine, estrogen action, and male sexual behavior...
  29. ncbi Rapid and reversible inhibition of brain aromatase activity
    J Balthazart
    Center for Research in Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, University of Liege, Liege, Belgium
    J Neuroendocrinol 13:63-73. 2001
    ....
  30. ncbi Enhanced neural activation in brain regions mediating sexual responses following exposure to a conditioned stimulus that predicts copulation
    M Taziaux
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 1 Avenue de l Hôpital Bat B36, B 4000 Liege 1, Belgium
    Neuroscience 151:644-58. 2008
    ..These results suggest a link between a proximate result of sexual CS presentation, male brain activation, and a known ultimate outcome, increased fertilizations...
  31. ncbi The distribution of tyrosine hydroxylase in the canary brain: demonstration of a specific and sexually dimorphic catecholaminergic innervation of the telencephalic song control nulcei
    D Appeltants
    , Center for Research in Cellular and Molecular Neurobiologie, Research Group in Behavioral Neuroendocrinology, Belgium
    Cell Tissue Res 304:237-59. 2001
    ....
  32. ncbi Restoration of male sexual behavior by adult exogenous estrogens in male aromatase knockout mice
    J Bakker
    Research Group in Behavioral Neuroendocrinology, Center for Cellular and Molecular Neurobiology, University of Liege, Liege B 4020, Belgium
    Horm Behav 46:1-10. 2004
    ..This is in contrast with earlier pharmacological studies performed on rats and ferrets that have suggested strong organizational effects of estradiol on male sexual behavior...
  33. ncbi The induction by testosterone of aromatase activity in the preoptic area and activation of copulatory behavior
    J Balthazart
    University of Liege, Laboratory of General and Comparative Biochemistry, Belgium
    Physiol Behav 47:83-94. 1990
    ..A moderate increase in AA was seen on day 16 and is probably responsible for the behavioral activation which was observed at the end of the experiment...
  34. ncbi Plasticity in the expression of the steroid receptor coactivator 1 in the Japanese quail brain: effect of sex, testosterone, stress and time of the day
    T D Charlier
    University of Liege, Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, Liege, Belgium
    Neuroscience 140:1381-94. 2006
    ..Together, these data support the idea that steroid receptor coactivator-1 is not constitutively expressed but rather is finely regulated by steroids, stress and possibly other unidentified factors...
  35. ncbi The control of preoptic aromatase activity by afferent inputs in Japanese quail
    P Absil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 17 Place Delcour, B-4020, , Belgium
    Brain Res Brain Res Rev 37:38-58. 2001
    ..The potential significance of these processes for the physiology of reproduction is critically evaluated...
  36. ncbi Ontogeny of aromatase and tyrosine hydroxylase activity and of aromatase-immunoreactive cells in the preoptic area of male and female Japanese quail
    J Balthazart
    University of Liege, Laboratory of Biochemistry, Liege, Belgium
    J Neuroendocrinol 12:853-66. 2000
    ..Whether this temporal coincidence results from a general ontogenetic pattern or from more direct causal links remains to be established...
  37. ncbi Simultaneous pituitary-gonadal recrudescence in two Corsican populations of male blue tits with asynchronous breeding dates
    S P Caro
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , , , Belgium
    Horm Behav 50:347-60. 2006
    ....
  38. ncbi Dopamine activates noradrenergic receptors in the preoptic area
    C A Cornil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4020 Liege, Belgium
    J Neurosci 22:9320-30. 2002
    ..This study thus clearly demonstrates the existence of a cross talk within CNS catecholaminergic systems between a neurotransmitter and heterologous receptors...
  39. ncbi Sexual behavior activates the expression of the immediate early genes c-fos and Zenk (egr-1) in catecholaminergic neurons of male Japanese quail
    T D Charlier
    , Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 17 place Delcour (Bat. L1, , Belgium
    Neuroscience 131:13-30. 2005
    ..Together, these data confirm the implication of the steroid-sensitive preoptic area and bed nucleus striae terminalis in the control of copulation and support the notion that dopamine is involved in its control...
  40. ncbi Relationships between aromatase activity in the brain and gonads and behavioural deficits in homozygous and heterozygous aromatase knockout mice
    J Bakker
    Centre for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, University of Liege, Liege, Belgium
    J Neuroendocrinol 16:483-90. 2004
    ....
  41. ncbi Neuroanatomical specificity in the expression of the immediate early gene c-fos following expression of appetitive and consummatory male sexual behaviour in Japanese quail
    M Taziaux
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, , , , Belgium
    Eur J Neurosci 23:1869-87. 2006
    ....
  42. ncbi Aromatization of androgens into estrogens reduces response latency to a noxious thermal stimulus in male quail
    H C Evrard
    Research Group in Behavioral Neuroendocrinology, Center for Cellular and Molecular Neurobiology, University of Liege, B 4000 Liege, Belgium
    Horm Behav 45:181-9. 2004
    ..Together, these data suggest that sex steroids modulate sensitivity to noxious stimuli possibly by a direct action at the level of the dorsal horn of the spinal cord...
  43. ncbi Song activation by testosterone is associated with an increased catecholaminergic innervation of the song control system in female canaries
    D Appeltants
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , Belgium
    Neuroscience 121:801-14. 2003
    ..The endocrine regulation of singing may thus involve the neuromodulatory action of specialized dopaminergic and/or noradrenergic projections onto several key parts of the song control system...
  44. ncbi Rapid effects of aromatase inhibition on male reproductive behaviors in Japanese quail
    Charlotte A Cornil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, Belgium
    Horm Behav 49:45-67. 2006
    ..Together, these data demonstrate that aromatase inhibition rapidly decreases both consummatory and appetitive aspects of male sexual behavior...
  45. ncbi Brain aromatase and circulating corticosterone are rapidly regulated by combined acute stress and sexual interaction in a sex-specific manner
    M J Dickens
    GIGA Neurosciences, University of Liege, 1 Avenue de l Hopital, Liege, Belgium
    J Neuroendocrinol 24:1322-34. 2012
    ..By contrast, female reproduction appears more nuanced and context specific, with subjects responding physiologically and behaviourally to stress, the male partner's stress exposure, and female-directed male behaviour...
  46. ncbi Differential c-fos expression in the brain of male Japanese quail following exposure to stimuli that predict or do not predict the arrival of a female
    M Taziaux
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, University of Liege, Belgium
    Eur J Neurosci 25:2835-46. 2007
    ..Further, these data suggest that conditioned and unconditioned sexual stimuli activate different brain regions but have similar behavioural consequences...
  47. ncbi Exposure to oestrogen prenatally does not interfere with the normal female-typical development of odour preferences
    J Bakker
    Centre for Cellular and Molecular Neurobiology, University of Liege, Liege, Belgium
    J Neuroendocrinol 19:329-34. 2007
    ..Furthermore, the presence of a strong male-directed odour preference in AFP-KO females suggests a postnatal contribution of oestrogens to the development of preferences to investigate opposite-sex odours...
  48. ncbi Aromatase inhibition blocks the expression of sexually-motivated cloacal gland movements in male quail
    M Taziaux
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 17 place Delcour (Bat. L1, , Belgium
    Behav Processes 67:461-9. 2004
    ..It is therefore, likely that both responses are controlled, like copulation, by aromatase-containing neurons of the preoptic area...
  49. ncbi Oestrogen-deficient female aromatase knockout (ArKO) mice exhibit depressive-like symptomatology
    C Dalla
    Centre for Cellular and Molecular Neurobiology, University of Liege, Liege, Belgium
    Eur J Neurosci 20:217-28. 2004
    ....
  50. ncbi Diversity of mechanisms involved in aromatase regulation and estrogen action in the brain
    Thierry D Charlier
    GIGA Neurosciences, University of Liege, 4000 Liege, Belgium
    Biochim Biophys Acta 1800:1094-105. 2010
    ....
  51. ncbi Targeting steroid receptor coactivator-1 expression with locked nucleic acids antisense reveals different thresholds for the hormonal regulation of male sexual behavior in relation to aromatase activity and protein expression
    Thierry D Charlier
    University of Liege, Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, Belgium
    Behav Brain Res 172:333-43. 2006
    ....
  52. ncbi Rapid regulation of pain by estrogens synthesized in spinal dorsal horn neurons
    Henry C Evrard
    Research Group in Behavioral Neuroendocrinology, Centre for Cellular and Molecular Neurobiology, University of Liege, B 4020 Liege, Belgium
    J Neurosci 24:7225-9. 2004
    ..Also, quite importantly, this finding suggests that the numerous rapid nongenomic effects of estrogens in the CNS could depend on their immediate local production by the enzyme aromatase, independently from the gonads...
  53. ncbi Preoptic aromatase cells project to the mesencephalic central gray in the male Japanese quail (Coturnix japonica)
    P Absil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 17 Place Delcour, , Belgium
    Horm Behav 40:369-83. 2001
    ....
  54. ncbi Non-photoperiodic factors and timing of breeding in blue tits: impact of environmental and social influences in semi-natural conditions
    S P Caro
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, University of Liege, B 4000 Liege 1 Sart Tilman, Belgium
    Behav Processes 75:1-7. 2007
    ..These results indicate that obtaining biologically relevant breeding results in captivity with wild birds requires the control and experimental manipulation of a wide array of complex environmental cues...
  55. ncbi Sexual behavior activity tracks rapid changes in brain estrogen concentrations
    Melanie Taziaux
    Center for Cellular and Molecular Neurobiology, University of Liege, B 4000 Liege, Belgium
    J Neurosci 27:6563-72. 2007
    ..Sexual behavior can thus be used to monitor changes in local estrogen concentrations and analyze the mechanisms mediating the rapid decline in estrogen signaling that takes place after inhibition of estrogen synthesis...
  56. ncbi Sex differences in the rapid control of aromatase activity in the quail preoptic area
    A T M Konkle
    Research Group in Behavioural Neuroendocrinology, GIGA Neurosciences, University of Liege, Liege, Belgium
    J Neuroendocrinol 23:424-34. 2011
    ..Additional characterizations of intracellular calcium in both sexes would therefore be appropriate to better understand aromatase regulation...
  57. ncbi The aromatase knockout (ArKO) mouse provides new evidence that estrogens are required for the development of the female brain
    J Bakker
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4020 Liege, Belgium
    Ann N Y Acad Sci 1007:251-62. 2003
    ..Thus, the classic view of sexual differentiation, that is, the female brain develops in the absence of any hormonal secretion, needs to be re-examined...
  58. ncbi Steroid receptor coactivator SRC-1 exhibits high expression in steroid-sensitive brain areas regulating reproductive behaviors in the quail brain
    Thierry D Charlier
    , Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, and Laboratory of Neurochemistry, , Belgium
    Neuroendocrinology 76:297-315. 2002
    ....
  59. ncbi Specific innervation of aromatase neurons by substance P fibers in the dorsal horn of the spinal cord in quail
    Henry C Evrard
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4020 Liege, Belgium
    J Comp Neurol 465:309-18. 2003
    ....
  60. ncbi Rapid action on neuroplasticity precedes behavioral activation by testosterone
    Thierry D Charlier
    University of Liege, Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, Liege, Belgium
    Horm Behav 54:488-95. 2008
    ....
  61. ncbi Sex differences in the expression of sex steroid receptor mRNA in the quail brain
    C Voigt
    GIGA Neurosciences, University of Liege, Liege, Belgium
    J Neuroendocrinol 21:1045-62. 2009
    ....
  62. ncbi Sexual partner preference requires a functional aromatase (cyp19) gene in male mice
    J Bakker
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , , B-4020, Belgium
    Horm Behav 42:158-71. 2002
    ..In conclusion, aromatization of testosterone to estradiol appears to be essential for sexual motivation and sexual partner preference. By contrast, estradiol may play only a limited role in the expression of male coital behaviors...
  63. ncbi The assessment of nociceptive and non-nociceptive skin sensitivity in the Japanese quail (Coturnix japonica)
    H C Evrard
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 17 Place Delcour, B 4020, Liege, Belgium
    J Neurosci Methods 116:135-46. 2002
    ..They also demonstrate the efficacy of these tests to evaluate skin sensitivity in quail and to assess its modulation by chemical factors that affect somatosensory processes...
  64. ncbi Inhibition of steroid receptor coactivator-1 blocks estrogen and androgen action on male sex behavior and associated brain plasticity
    Thierry D Charlier
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4020 Liege, Belgium
    J Neurosci 25:906-13. 2005
    ..Together, the present findings indicate that SRC-1 modulates steroid-dependent gene transcription and behavior and highlight the rapid time course of steroid-induced brain plasticity in adult quail...
  65. ncbi The microtubule-associated protein doublecortin is broadly expressed in the telencephalon of adult canaries
    Géraldine Boseret
    University of Liege, Center for Cellular and Molecular Neurobiology, Belgium
    J Chem Neuroanat 33:140-54. 2007
    ....
  66. ncbi Modulation of hormonal signaling in the brain by steroid receptor coactivators
    Thierry D Charlier
    University of Liege, Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, Belgium
    Rev Neurosci 16:339-57. 2005
    ..A complete understanding of hormone action on brain and behavior will not be attained until a better knowledge of coactivator physiology is achieved...
  67. ncbi Alpha-fetoprotein protects the developing female mouse brain from masculinization and defeminization by estrogens
    Julie Bakker
    Center for Cellular and Molecular Neurobiology, University of Liege, Avenue de l Hopital 1, B36, 4000 Liege, Belgium
    Nat Neurosci 9:220-6. 2006
    ..These results clearly demonstrate that prenatal estrogens masculinize and defeminize the brain and that AFP protects the female brain from these effects of estrogens...
  68. ncbi The aromatase knock-out mouse provides new evidence that estradiol is required during development in the female for the expression of sociosexual behaviors in adulthood
    Julie Bakker
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4020 Liege, Belgium
    J Neurosci 22:9104-12. 2002
    ..Together, these findings demonstrate that estrogen is required for normal female development. The concept that the female brain develops in the absence of any hormonal stimulation should therefore be reconsidered...
  69. ncbi Social context affects testosterone-induced singing and the volume of song control nuclei in male canaries (Serinus canaria)
    Géraldine Boseret
    Center for Cellular and Molecular Neurobiology, University of Liege, B 4000 Liege, Belgium
    J Neurobiol 66:1044-60. 2006
    ..The effects of T on singing rate and on the volume of the song control nuclei are thus modulated by the social environment, including the presence/absence of a potential mate and dominance status among males...
  70. ncbi Dopamine modulates male sexual behavior in Japanese quail in part via actions on noradrenergic receptors
    Charlotte A Cornil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4020 Liege, Belgium
    Behav Brain Res 163:42-57. 2005
    ..Together, these results show for the first time that i.c.v. injections of DA itself inhibit male sexual behavior in quail and suggest that the interaction of DA with alpha2-receptors has behavioral significance...
  71. ncbi Electrophysiological and neurochemical characterization of neurons of the medial preoptic area in Japanese quail (Coturnix japonica)
    Charlotte A Cornil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 17 Place Delcour Bat L1, B 4020 Liege, Belgium
    Brain Res 1029:224-40. 2004
    ....
  72. ncbi Aromatase (estrogen synthase) activity in the dorsal horn of the spinal cord: functional implications
    Henry C Evrard
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, Liege, Belgium
    Ann N Y Acad Sci 1007:263-71. 2003
    ....
  73. ncbi Localization of oestrogen receptors in the sensory and motor areas of the spinal cord in Japanese quail (Coturnix japonica)
    H C Evrard
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, Belgium
    J Neuroendocrinol 14:894-903. 2002
    ..Together, these data suggest that spinal actions of oestrogens may modulate the sensory and motor systems that participate in reproduction, as well as other nonreproductive functions in quail...
  74. ncbi The effects of aromatase inhibition on testosterone-dependent conditioned rhythmic cloacal sphincter movements in male Japanese quail
    Charlotte A Cornil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , Belgium
    Physiol Behav 83:99-105. 2004
    ..Conditioned sexual RCSM are therefore mediated by the aromatization of testosterone, most likely due to effects on central aromatase activity related to sexual motivation...
  75. ncbi Estradiol rapidly activates male sexual behavior and affects brain monoamine levels in the quail brain
    Charlotte A Cornil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4000 Liege 1, Belgium
    Behav Brain Res 166:110-23. 2006
    ..Together, these data demonstrate that a single estradiol injection rapidly activates male sexual behavior in quail and that this behavioral effect is correlated with changes in monoaminergic activity...
  76. ncbi Attraction thresholds and sex discrimination of urinary odorants in male and female aromatase knockout (ArKO) mice
    Sylvie Pierman
    Center for Cellular and Molecular Neurobiology, University of Liege, Belgium
    Horm Behav 49:96-104. 2006
    ....
  77. ncbi Noradrenergic control of auditory information processing in female canaries
    Didier Appeltants
    Research Group in Behavioral Neuroendocrinology, Center for Cellular and Molecular Neurobiology, , 17 place Delcour (Bat. L1, Belgium
    Behav Brain Res 133:221-35. 2002
    ..These results indicate that central noradrenergic inputs modulate the sexual behavior of female canaries by affecting the auditory processing of relevant information contained in sexually stimulating songs...
  78. ncbi Neuroanatomical specificity of sex differences in expression of aromatase mRNA in the quail brain
    Cornelia Voigt
    Center for Cellular and Molecular Neurobiology, University of Liege, B 4000 Liege, Belgium
    J Chem Neuroanat 33:75-86. 2007
    ....
  79. ncbi Site-specific effects of anosmia and cloacal gland anesthesia on Fos expression induced in male quail brain by sexual behavior
    Melanie Taziaux
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, 1 Avenue de l Hôpital Bat B36, B 4000 Liege 1, Belgium
    Behav Brain Res 194:52-65. 2008
    ..Future work should specify the nature of these stimuli and their function in the expression of avian male sexual behavior...
  80. ncbi Steroid control and sexual differentiation of brain aromatase
    J Balthazart
    European Graduate School for Neuroscience, Laboratory of Biochemistry, University of Liege, Belgium
    J Steroid Biochem Mol Biol 61:323-39. 1997
    ....
  81. ncbi Sex differences in the distribution of the steroid receptor coactivator SRC-1 in the song control nuclei of male and female canaries
    Thierry D Charlier
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 17 place Delcour (Bat. L1, B-4020, , Belgium
    Brain Res 959:263-74. 2003
    ....
  82. ncbi The medial preoptic nucleus receives vasotocinergic inputs in male quail: a tract-tracing and immunocytochemical study
    Philippe Absil
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 17 Place Delcour, B-4020 Liege, Belgium
    J Chem Neuroanat 24:27-39. 2002
    ..An intrinsic innervation could however also contribute to this network. This interaction between BSTm and POM could play a key role in the control of male-typical sexual behavior and in its sex dimorphism in quail...
  83. ncbi Endocrine correlates of the breeding asynchrony between two Corsican populations of blue tits (Parus caeruleus)
    Samuel P Caro
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, , , , Belgium
    Gen Comp Endocrinol 140:52-60. 2005
    ..No change in the volume of the song-control nuclei (HVC and RA) could be detected during the study period. Development of brain nuclei was completed 2-3 months before the beginning of intense sexual activity...
  84. ncbi Testosterone recruits new aromatase-imunoreactive cells in neonatal quail brain
    Sylvia M Bardet
    GIGA Neurosciences, Research Group in Behavioral Neuroendocrinology, University of Liege, Liege, Belgium
    Neuroreport 21:376-80. 2010
    ..This recruitment concerns all brain nuclei normally expressing the enzyme even if it is more prominent in the ventromedial hypothalamus than in other nuclei...
  85. ncbi The effect of auditory distractors on song discrimination in male canaries (Serinus canaria)
    Didier Appeltants
    Department of Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, , 17 place Delcour (Bat. L1, , Belgium
    Behav Processes 69:331-41. 2005
    ....
  86. ncbi Effects of lesions of nucleus taeniae on appetitive and consummatory aspects of male sexual behavior in Japanese quail
    Philippe Absil
    , Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, Belgium
    Brain Behav Evol 60:13-35. 2002
    ..The effects of taeniae lesions suggest that this nucleus, similar to the medial amygdala in mammals, might be implicated in the control of sexual satiety...
  87. ncbi Sex differences in projections from preoptic area aromatase cells to the periaqueductal gray in Japanese quail
    Claudio Carere
    University of Liege, Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, Liège B 4000, Belgium
    J Comp Neurol 500:894-907. 2007
    ..These data therefore support the hypothesis that sex differences in POM-PAG connectivity are causally linked to the sex difference in the behavioral response to testosterone...
  88. ncbi Early seasonal development of brain song control nuclei in male blue tits
    Samuel P Caro
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioural Neuroendocrinology, , , Belgium
    Neurosci Lett 386:139-44. 2005
    ..The unidentified environmental and/or physiological cues controlling the plasticity in the song system must therefore differ, at least in part, from those affecting other morphological and physiological traits controlling reproduction...
  89. ncbi Catecholaminergic inputs to aromatase cells in the canary auditory forebrain
    Didier Appeltants
    , Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, 17 Place Delcour, , Belgium
    Neuroreport 15:1727-30. 2004
    ..Interactions between catecholaminergic systems and aromatase in the caudomedial nidopallium may provide one mechanism for the regulation of estrogens involved in song perception and memorization...
  90. ncbi Developmental fluoxetine exposure differentially alters central and peripheral measures of the HPA system in adolescent male and female offspring
    J L Pawluski
    School for Mental Health and Neuroscience, Department of Neuroscience, Maastricht University, Universiteitssingel 50, 6229 ER Maastricht, The Netherlands
    Neuroscience 220:131-41. 2012
    ..Together, these results highlight a marked sex difference in the long-term effect of developmental exposure to SSRI medications that may differentially alter the capacity of the hippocampus to respond to stress...
  91. ncbi The origin of catecholaminergic inputs to the song control nucleus RA in canaries
    Didier Appeltants
    , Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, 17 Place Delcour, B-4020, Belgium
    Neuroreport 13:649-53. 2002
    ..These findings and previous work on the high vocal center (HVc) indicate that the two major nuclei of the motor pathway controlling song production (RA and HVc) receive catecholaminergic inputs of similar origins...
  92. ncbi Immunocytochemical localization of aromatase in sensory and integrating nuclei of the hindbrain in Japanese quail (Coturnix japonica)
    Henry C Evrard
    Center for Cellular and Molecular Neurobiology, Research Group in Behavioral Neuroendocrinology, University of Liege, B 4020 Liege, Belgium
    J Comp Neurol 473:194-212. 2004
    ....
  93. ncbi How useful is the appetitive and consummatory distinction for our understanding of the neuroendocrine control of sexual behavior?
    Gregory F Ball
    Horm Behav 53:307-11; author reply 315-8. 2008
  94. ncbi Territorial aggression, circulating levels of testosterone, and brain aromatase activity in free-living pied flycatchers
    Bengt Silverin
    Department of Zoology, , , Sweden
    Horm Behav 45:225-34. 2004
    ....
  95. ncbi Seasonal plasticity in the song control system: multiple brain sites of steroid hormone action and the importance of variation in song behavior
    Gregory F Ball
    Department of Psychological and Brain Sciences, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218 2686, USA
    Ann N Y Acad Sci 1016:586-610. 2004
    ..Seasonal neuroplasticity in the song system involves an interplay among seasonal state, testosterone action, and behavioral activity...
  96. ncbi Hormonal regulation of brain circuits mediating male sexual behavior in birds
    Gregory F Ball
    Department of Psychological and Brain Sciences, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA
    Physiol Behav 83:329-46. 2004
    ....
  97. ncbi Differential effects of testosterone on neuronal populations and their connections in a sensorimotor brain nucleus controlling song production in songbirds: a manganese enhanced-magnetic resonance imaging study
    Vincent Van Meir
    Bio Imaging Laboratory, Department of Biomedical Sciences, University of Antwerp, B 2020 Antwerp, Belgium
    Neuroimage 21:914-23. 2004
    ..The slow time scales investigated by this technique (compared to functional MRI) appear ideally suited for characterizing slow processes such as those involved in brain plasticity and learning...
  98. ncbi Applications of manganese-enhanced magnetic resonance imaging (MEMRI) to image brain plasticity in song birds
    Annemie Van der Linden
    Bio Imaging Laboratory, Department of Biomedical Sciences, University of Antwerp, Campus Middelheim, Groenenborgerlaan 171, 2020 Antwerp, Belgium
    NMR Biomed 17:602-12. 2004
    ....
  99. ncbi Coordinated and dissociated effects of testosterone on singing behavior and song control nuclei in canaries (Serinus canaria)
    Jennifer J Sartor
    Department of Psychological and Brain Sciences, Johns Hopkins University, 3400 N Charles Street, Baltimore, MD 21218, USA
    Horm Behav 47:467-76. 2005
    ..T can thus enhance singing well before concomitant androgen-induced changes in the song control system are complete...
  100. ncbi Effects of testosterone on Reelin expression in the brain of male European starlings
    Philippe Absil
    Ethology Research Group, Department of Biology, U.I.A, University of Antwerp, Wilrijk, Belgium
    Cell Tissue Res 312:81-93. 2003
    ..Additional studies should now be carried out to determine the specific role played by this protein in the seasonal plasticity of the songbird brain...
  101. ncbi Spatiotemporal properties of the BOLD response in the songbirds' auditory circuit during a variety of listening tasks
    Vincent Van Meir
    Bio Imaging Laboratory, University of Antwerp, Groenenborgerlaan 171, B 2020 Antwerp, Belgium
    Neuroimage 25:1242-55. 2005
    ....