The role of chelatable zinc in microglial activation
Project/Area Number |
15K10307
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Neurosurgery
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Research Institution | Kochi University |
Principal Investigator |
Higashi Youichirou 高知大学, 教育研究部医療学系基礎医学部門, 助教 (80380062)
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Co-Investigator(Kenkyū-buntansha) |
上羽 哲也 高知大学, 教育研究部医療学系臨床医学部門, 教授 (00314203)
齊藤 源顕 高知大学, 教育研究部医療学系基礎医学部門, 教授 (60273893)
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Co-Investigator(Renkei-kenkyūsha) |
YAWATA Toshio 高知大学, 教育研究部医療学系臨床医学部門, 助教 (40380323)
SHIMIZU Shogo 高知大学, 教育研究部医療学系基礎医学部門, 助教 (90721853)
|
Project Period (FY) |
2015-04-01 – 2018-03-31
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Project Status |
Completed (Fiscal Year 2017)
|
Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
Keywords | ミクログリア / 脳卒中後遺症 / キレータブル亜鉛 / 亜鉛 / 炎症性サイトカイン |
Outline of Final Research Achievements |
Here, we examined the role of extracellular zinc in microglial M1 activation. Pretreatment with ZnCl2 caused aggravation of pro-inflammatory cytokine secretions when M1 activation was induced by lipopolysaccharide. The intracellular zinc chelator, the radical scavenger, and the P2X7R antagonist suppressed the effects of zinc pre-treatment on microglia. Furthermore, ischemia-reperfusion induced endogenous zinc release, resulting in up-regulation of pro-inflammatory cytokine, and the M1 marker, in addition to cognitive impairments, all of which were suppressed by the zinc chelator. Extracellular zinc may prime microglia to enhance the production of pro-inflammatory cytokines through P2X7R activation followed by ROS generation in response to M1 stimuli, which may cause cognitive impairments.
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Report
(4 results)
Research Products
(62 results)
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[Presentation] INVOLVEMENT OF BRAIN GABAA RECEPTOR FOR ANGIOTENSIN II-INDUCED FREQUENT URINATION IN THE RAT.2017
Author(s)
Shimizu S, Shimizu T, Nakamura K, Aratake T, Zou S, Hamada T, Nagao Y, Yamamoto M, Honda M, Higashi Y, Saito M
Organizer
ICS2017 (International Continence Society 47th Annual Meeting)
Related Report
Int'l Joint Research
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[Presentation] Nitric oxide-mediated S-nitrosylation can be involved in brain nicotinic acetylcholine receptors-mediated activation of central adrenomedullary outflow in rats.2017
Author(s)
Shimizu T, Higashi Y, Yamamoto M, Tanaka K, Nakamura K, Shimizu S, Zou S, Yawata T, Ueba T, Yuri K, Saito M
Organizer
The 15th Congress of the International Society for Autonomic Neuroscience
Related Report
Int'l Joint Research
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[Presentation] Endogenous hydrogen sulfide can function as a relaxation factor in the rat bladder and prostate.2017
Author(s)
Zou S, Shimizu T, Shimizu S, Higashi Y, Ono H, Nakamura K, Aratake T, Yamamoto M, Hamada T, Nagao Y, Saito M
Organizer
第70回日本薬理学会西南部会
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[Presentation] Effect of alpha1 adrenoceptor antagonist naftopidil on the arginine-vasopressin secretion and urine volume in centrally noradrenaline-administered rats2016
Author(s)
Shimizu S, Shimizu T, Yamamoto M, Higashi Y, Nakamura K, Tsounapi P, Liu N, Honda M, Takenaka A, Saito M
Organizer
ICS2016
Place of Presentation
Tokyo International Forum(Tokyo, Japan)
Year and Date
2016-09-13
Related Report
Int'l Joint Research
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[Presentation] Pharmacological characterization of brain serotonin receptor subtypes involved in bombesin-induced frequent urination in rats2016
Author(s)
Shimizu T, Shimizu S, Wada N, Takai S, Shimizu N, Higashi Y, Kadekawa K, Majima T, Saito M, Yoshimura N
Organizer
ICS2016
Place of Presentation
Tokyo International Forum(Tokyo, Japan)
Year and Date
2016-09-13
Related Report
Int'l Joint Research
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[Presentation] The effect of selective a1A-adrenoceptor blocker silodosin on urinary bladder function in rat model of cyclophosphamide induced interstitial cystitis2016
Author(s)
Shimizu S, Shimizu T, Higashi Y, Martin DT, Kawamoto B, Hikita K, Muraoka K, Honda M, Takenaka A, Saito M
Organizer
American Urological Association, 111th Annual Meeting
Place of Presentation
San Diego Convention Center(San Diego, CA, USA)
Year and Date
2016-05-06
Related Report
Int'l Joint Research
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[Presentation] Brain serotonin and corticotropin-releasing factor are involved in bombesin-induced frequent urination in rats2016
Author(s)
Shimizu T, Shimizu S, Wada N, Takai S, Shimizu N, Kadekawa K, Majima T, Higashi Y, Saito M, Yoshimura N
Organizer
American Urological Association, 111th Annual Meeting
Place of Presentation
San Diego Convention Center(San Diego, CA, USA)
Year and Date
2016-05-06
Related Report
Int'l Joint Research
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[Presentation] 脳室内アンジオテンシンIIの中枢性AT1受容体を介した排尿反射への影響2016
Author(s)
川本文弥, 清水翔吾, 清水孝洋, 東洋一郎, 中村久美子, 引田克弥, 村岡邦康, 本田正史, 瀬島健裕, 齊藤源顕, 武中篤
Organizer
第104回日本泌尿器科学会総会
Place of Presentation
仙台国際センター会議棟・展示棟、東北大学百周年記念会館(宮城県仙台市)
Year and Date
2016-04-23
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