repolarization

• 再分極

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repolarize

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/07/08 21:02:11」(JST)

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In neuroscience, repolarization refers to the change in membrane potential that returns it to a negative value just after the depolarization phase of an action potential has changed the membrane potential to a positive value. The repolarization phase usually returns the membrane potential back to the resting membrane potential. The efflux of K⁺ ions results in the falling phase of an action potential. The ions pass through the selectivity filter of the K⁺ channel pore. There are several K⁺ channels that contribute to repolarization, including A-type channels, delayed rectifiers, and Ca²⁺-activated K⁺ channels.

Repolarization typically results from the movement of positively charged K⁺ ions out of the cell. The repolarization phase of an action potential initially results in hyperpolarization, attainment of a membrane potential, termed the afterhyperpolarization, that is more negative than the resting potential. Repolarization usually takes several miliseconds.

References

External links

• "Repolarization (Animation)". Psychology Department, Hanover College. Retrieved 18 May 2013. 

UpToDate Contents

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• 1. 早期再分極 early repolarization
• 2. 心電図チュートリアル：伝導系の生理学 ecg tutorial physiology of the conduction system
• 3. T波（再分極）の交互脈：技術的側面 t wave repolarization alternans technical aspects
• 4. 心電図チュートリアル：SＴ波およびT波の変化 ecg tutorial st and t wave changes
• 5. 心電図チュートリアル：心筋虚血および心筋梗塞 ecg tutorial myocardial ischemia and infarction

English Journal

• Relationships of electrocardiographic parameters with ambulatory hypertension in young and healthy adults.

• Aeschbacher S1, Metin F1, Bossard M2, Schoen T2, von Rotz M1, Mettler H3, Abächerli R4, Risch M5, Risch L6, Conen D7.
• International journal of cardiology.Int J Cardiol.2016 Jan 1;202:300-4. doi: 10.1016/j.ijcard.2015.09.013. Epub 2015 Sep 13.
• PMID 26414504

• Early repolarization: an evolving concept for the past 70 years.

• Biasco L1, Cristoforetti Y, De Backer O, Castagno D, Giustetto C, Orzan F, Gaita F.
• Journal of cardiovascular medicine (Hagerstown, Md.).J Cardiovasc Med (Hagerstown).2016 Jan;17(1):4-10. doi: 10.2459/JCM.0000000000000276.
• For more than 70 years, early repolarization has been considered to be a common normal variant. In the general population, the prevalence ranges between 5 and 13%, and in athletes, a rising trend is observed from 20 to 90%. Nevertheless, from the latter half of the 1990s, a growing number of case re
• PMID 26090918

• Chemokine ligand 9 modulates cardiac repolarization via Cxcr3 receptor binding.

• Scicluna BP1, Remme CA1, Rivaud M1, Wilde AA1, Bezzina CR2, Verkerk AO3.
• International journal of cardiology.Int J Cardiol.2015 Dec 15;201:49-52. doi: 10.1016/j.ijcard.2015.07.096. Epub 2015 Jul 31.
• PMID 26288327

Japanese Journal

• Brugada症候群,早期再分極症候群,特発性心室細動の遺伝的背景 (特集 循環器疾患と分子遺伝学)

• 渡部 裕,南野 徹
• 循環器内科 77(4), 353-359, 2015-04
• NAID 40020455984

• Mapping and Ablating Ventricular Premature Contractions That Trigger Ventricular Fibrillation: Trigger Elimination and Substrate Modification

• NOGAMI AKIHIKO
• Journal of cardiovascular electrophysiology 26(1), 110-115, 2015-01
• … Ventricular fibrillation (VF) is a malignant arrhythmia, usually initiated by a ventricular premature contraction (VPC) during the vulnerable period of cardiac repolarization. …
• NAID 120005550018

• J-Wave in Patients With Syncope

• Chiba Yuta,Minoura Yoshino,Onishi Yoshimi,Inokuchi Koichiro,Ochi Akinori,Kawasaki Shiro,Onuma Yoshimasa,Munetsugu Yumi,Kikuchi Miwa,Ito Hiroyuki,Onuki Tatsuya,Watanabe Norikazu,Adachi Taro,Asano Taku,Tanno Kaoru,Kobayashi Youichi
• Circulation Journal advpub(0), 2015
• … The presence of J-wave, also known as early repolarization, on electrocardiogram is often seen in the general population, but the relationship between syncope and J-wave is unclear.Methods and Results:After excluding 67 patients with structural heart disease from 326 with syncope, we classified 259 patients according to the presence or absence of J-wave (≥1 mm) in at least 2 inferior or lateral leads. …
• NAID 130005093168

Related Links

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• Repolarization | Define Repolarization at Dictionary.com

noun 1. a sharp division, as of a population or group, into opposing factions. 2. Optics. a state, or the production of a state, in which rays of light or similar radiation exhibit different properties in different directions. Compare circular ...

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