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Izumo N, Yukiko I, Kagaya N, Furukawa M, Iwasaki R, Sumino A, Hayamizu K, Nakano M, Hoshino T, Kurono H, Watanabe Y, Manabe T. Lactoferrin Suppresses Decreased Locomotor Activities by Improving Dopamine and Serotonin Release in the Amygdala of Ovariectomized Rats. Curr Mol Pharmacol 2020; 14:245-252. [PMID: 32351191 DOI: 10.2174/1570163817666200430002937] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 02/12/2020] [Accepted: 02/19/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Decreases in female hormones not only affect bone metabolism and decrease bone mass, but also affect the central nervous system, causing brain disorders such as depression and dementia. Administration of estradiol by hormone replacement therapy can improve dementia, while reduced estradiol in ovariectomized (OVX) model rats can reduce both bone density and locomotor activity. The antidepressant fluvoxamine, which is widely used in clinical practice, can improve this effect on locomotor reduction. Similarly, lactoferrin (LF) can reportedly improve inhibitory locomotion due to stress. OBJECTIVE In this study, we examined the effect of LF on neurite outgrowth in vitro and in vivo using PC12 cells and rats, respectively. METHODS We performed an in vivo study in which 8-week-old female OVX rats were administered LF five days a week for 6 weeks from the day after surgery. After administration was completed, spontaneous locomotor activity in the dark period, immobility time in a forced swim test, and release amount of dopamine and serotonin in the brain were measured. RESULTS LF was found to have a neurite outgrowth function in PC12 cells. Moreover, LF was found to improve OVX-induced decreases in locomotor activity and increases in immobility time in the forced swim test. Furthermore, the administration of LF elicited significant recovery of decreased dopamine and serotonin release in the brains of OVX group rats. CONCLUSION These results strongly suggest that LF improved OVX-induced decreases in momentum during the dark period and, moreover, that release of dopamine and serotonin in the brain was involved in this effect.
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Affiliation(s)
- Nobuo Izumo
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Ishibashi Yukiko
- Department of Biochemistry, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka- ku, Yokohama, Kanagawa245-0066, Japan
| | - Nobuharu Kagaya
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Megumi Furukawa
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Rina Iwasaki
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Akihide Sumino
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Kohsuke Hayamizu
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Makoto Nakano
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Tatsuo Hoshino
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Haruna Kurono
- Laboratory for Neuroanatomy and Neuropharmacology, Department of Nursing, Faculty of Nursing, Chukyogakuin University, 2216 Toki-cho, Mizunami, Gifu509-6192, Japan
| | - Yasuo Watanabe
- General Health Medical Center, Yokohama University of Pharmacy, 601 Matano-cho, Totsuka-ku, Yokohama, Kanagawa245- 0066, Japan
| | - Takayuki Manabe
- Laboratory for Neuroanatomy and Neuropharmacology, Department of Nursing, Faculty of Nursing, Chukyogakuin University, 2216 Toki-cho, Mizunami, Gifu509-6192, Japan
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Yu H, Pavlyukov M, Zhang S, Bastola S, Minata M, Alsheikh HA, Kang KD, Norian L, Kagaya N, Shinya K, Nakano I. GENE-25. THE HDAC INHIBITOR AR42 ATTENUATES CROSSTALK BETWEEN TWO MUTUALLY-EXCLUSIVE GLIOMA STEM CELL SUBTYPES AND AUGMENTS IMMUNOTHERAPY WITH PD-1 CHECKPOINT BLOCKADE. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox168.399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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