Journal of Photoscience
- Volume 9 Issue 2
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- Pages.258-260
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- 2002
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- 1225-8555(pISSN)
Immunocytochemistry of serotonin and galanin in the hypothalamus of the Japanese quail
- Haida, Yuka (Department of Life and Environmental Sciences, Graduate School of Human Culture, Nara Women's University) ;
- Oishi, Tadashi (Department of Life and Environmental Sciences, Graduate School of Human Culture, Nara Women's University) ;
- Tsutsui, Kazuyoshi (Faculty of Integrated Arts and Science, Hiroshima University) ;
- Tamotsu, Satoshi (Department of Life and Environmental Sciences, Graduate School of Human Culture, Nara Women's University)
- Published : 2002.08.01
Abstract
We investigated the interaction of serotonin and galanin (GA) by a double immunostaining method in the Japanese quail. Serotonin-immunoreactive (IR) cells were located in the paraventricular organ (PVO) and infundibular nucleus (IF). The number of the cells under short-day photoperiod (SD) was less in the dark phase than in the light phase. GA-IR cells were found in the PVO, IF and median eminence. The number of GA-IR cells in SD was significantly greater than that in long-day photoperiod (LD). Numerous GA- IR varicose fibers ran along serotonin- IR cell bodies and nerve fibers in the PVO and IF of the same sections. Very few serotonin-IR fibers ran along GA-IR cell bodies and GA-IR nerve fibers in the ventral part of the IF. The present results suggest that the possibility of functional interaction takes place between serotonin- and GA- IR neurons in the PVO and IF.
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