A study regarding sensorineural hearing impairment with morphological changes in stria vascularis induced by the administration of Arg-Vasopressin
精氨酸加压素引起的感音神经性听力障碍与血管纹形态变化的研究
基本信息
- 批准号:21592167
- 负责人:
- 金额:$ 2.75万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:2009
- 资助国家:日本
- 起止时间:2009 至 2012
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Wistar rats were intraperitoneally injected 0.02 units/g of AVP (Pitressin; Arg-vasopressin. Daiichi-Sankyo, Japan)in the all experiments in this study. ABR thresholds gradually increased significantly upto 60 min after the injection. When the dehydration load pretreatment for 24h was added, ABR thresholds rapidly increased significantly up to 10 min after the injection. However, the morphological endolymphatic hydrops in cochlea was not detected under a light microscopy. However, the enlargement of an area lacking intracellular organelles in the intermediate cells in stria vascularis or a so called “vacuole” was detected under transmission electron microscopy after the AVP injection. When the dehydration load pretreatment for 24h was added, the vacuole area increased with AVP injection. However, when the V2Rantagonist (OPC-31260, donated by Otsuka Pharmaceutical) was administered before AVP,vacuole formation was suppressed significantly. Conversely, vacuole formation was not suppressed when the V1aR antagonist (OPC-21268, donated by Otsuka Pharmaceutical) was administered before AVP injection.
Wistar大鼠以0.02单位/g的剂量注射AVP(垂体加压素;精氨酸加压素)。Daiichi-Sankyo,日本)。至注射后60min,ABR阈值逐渐明显升高。当加入脱水负荷预处理24小时后,ABR阈值迅速升高,直至注射后10min。但光镜下未见耳蜗内淋巴积水。然而,注射AVP后,在透射电子显微镜下观察到血管纹中间细胞内缺乏细胞内细胞器的区域扩大或所谓的“空泡”。当加入脱水负荷预处理24小时后,注射AVP使空泡面积增大。然而,当V2R拮抗剂(OPC-31260,由大冢制药公司捐赠)在AVP之前给予时,空泡的形成明显受到抑制。相反,当注射AVP前给予V1aR拮抗剂(OPC-21268,由大冢制药公司捐赠)时,空泡的形成没有被抑制。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
良性発作性頭位めまい症における純音聴力検査結果の検討
纯音测听结果显示良性阵发性位置性眩晕
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:大原卓哉;長沼英明;落合敦;加納孝一;徳増厚二;岡本牧人
- 通讯作者:岡本牧人
めまいのリハビリ山口大学大学院医学系研究科耳鼻咽喉科学分野 山下裕司編
头晕康复 山口大学大学院医学研究科耳鼻咽喉科 编辑 山下裕二
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:池園哲郎;新藤晋;長沼英明
- 通讯作者:長沼英明
Methods and apparatuses for stimulating otolith organs by linear acceleration
通过线性加速刺激耳石器官的方法和装置
- DOI:
- 发表时间:2010
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
めまい・メニエール病の治療、メニエール病に対する水分摂 取 療法
头晕和梅尼埃病的治疗、梅尼埃病的水化疗法
- DOI:
- 发表时间:2012
- 期刊:
- 影响因子:0
- 作者:河野正充;保富宗城;鈴本正樹;山内一真;荒井潤;小上真史;田村真司;藤原啓次;山中昇;長沼英明
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NAGANUMA Hideaki其他文献
NAGANUMA Hideaki的其他文献
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{{ truncateString('NAGANUMA Hideaki', 18)}}的其他基金
A study regarding the mechanism of hearing loss in development of endolymphatic hydrops in Meniere's disease
梅尼埃病内淋巴积水导致听力损失的机制研究
- 批准号:
15591829 - 财政年份:2003
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
A study regarding the mechanism in development of endolymphatic hydrops in Meniere's disease
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- 批准号:
13671797 - 财政年份:2001
- 资助金额:
$ 2.75万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
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