2004
DOI: 10.1016/j.exger.2003.08.004
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Changes of prolactin regulatory mechanisms in aging: 24-h rhythms of serum prolactin and median eminence and adenohypophysial concentration of dopamine, serotonin, (γ-aminobutyric acid, taurine and somatostatin in young and aged rats

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Cited by 26 publications
(21 citation statements)
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“…In the present study, stressed mice showed a decreased sucrose preference compared with unstressed mice. This result is consistent with the animals having lower levels of 5-HT and DA in the CNS, and being more likely to show depressive symptoms during chronic stress (Esquifino et al 2004;Li et al 2009). Sesamol has been shown to increase brain monoamine (5-HT and DA) levels in reserpine-treated rat brains (unpublished data from our lab).…”
Section: Discussionsupporting
confidence: 90%
“…In the present study, stressed mice showed a decreased sucrose preference compared with unstressed mice. This result is consistent with the animals having lower levels of 5-HT and DA in the CNS, and being more likely to show depressive symptoms during chronic stress (Esquifino et al 2004;Li et al 2009). Sesamol has been shown to increase brain monoamine (5-HT and DA) levels in reserpine-treated rat brains (unpublished data from our lab).…”
Section: Discussionsupporting
confidence: 90%
“…These findings suggest that SOM peptide synthesized in the PeVN and released in the ME may be influenced by diurnal rhythms. Our data are supported by a study that reported a diurnal rhythm in SOM peptide content in the ME (Esquifino et al, 2004). Moreover, SOM peptide levels in the cortex, anterior hypothalamus and suprachiasmatic nucleus (SCN) (Fukuhara et al, 1993), and SOM release from the hypothalamus (Berelowitz et al, 1982) were demonstrated to show circadian rhythmicity and suggest that the SCN may play a role in this diurnal change in SOM peptide transport from the PeVN to the ME.…”
Section: Age Dependent Effects Of Estrogen On Pevn Som Peptidesupporting
confidence: 74%
“…This was associated with declining DA synthesis (*30%) in the striatum and nucleus accumbens from 3 to 28 months of age, although DA concentrations were maintained [45]. Of potential importance, DA rhythmicity in the tuberoinfundibular DA system, which is less stressed than the nigrostriatal system, disappeared in aged rats [333]. Given that TH transcription is activity dependent, and may be reduced or lost in quiescence, loss could occur in arrhythmic neurons.…”
Section: The Aging Clockmentioning
confidence: 98%