[논문]Serotonin content and melatonin production in the pineal gland of the male Djungarian hamster (Phodopus sungorus)

Lerchl, Alexander; Schlatt, Stefan

doi:10.1111/j.1600-079x.1992.tb00039.x

Serotonin content and melatonin production in the pineal gland of the male Djungarian hamster (Phodopus sungorus)

Journal of pineal research, v.12 no.3, 1992년, pp.128 - 134

Lerchl, Alexander , Schlatt, Stefan

Abstract ▼ AI-Helper

Abstract: Diurnal variations in serum melatonin levels and pineal concentrations of serotonin (5‐HT), N‐acetylserotonin (NAS), 5‐hydroxyindole acetic acid (5‐HIAA), and melatonin were estimated in adult male Djungarian hamsters kept under long‐day (LD 16:8) or short‐day (LD 8:16) photoperiods. The nocturnal increase in melatonin production was accompanied by a marked drop in pineal serotonin concentrations. Serotonin levels, however, decreased approximately 4 hr before pineal melatonin increased. Correlations of the mean values for pineal serotonin and pineal melatonin indicated significant correlations at both LD 16:8 (r = ‐0.92, P < 0.001) and LD 8:16 (r = ‐0.85, P < 0.001). The mean levels of pineal serotonin and serum melatonin were correlated as well (LD 16:8, r = ‐0.91, P < 0.001; LD 8:16, r = ‐0.81, P < 0.01). The levels of pineal serotonin declined at approximately the same time as serum melatonin levels increased. These data suggest that the drop in pineal serotonin is primarily a consequence of melatonin production (as reflected by increasing serum concentrations). Consequently, pineal concentrations of melatonin may not be the best estimate of actual melatonin production, but a measure of how much melatonin is accumulated within the pineal due to high synthesis rates while the release of the hormone from the gland is limited.

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Serotonin content and melatonin production in the pineal gland of the male Djungarian hamster (Phodopus sungorus)

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참고문헌 (24)

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