WordNet

a stripe or stripes of contrasting color; "chromosomes exhibit characteristic bands"; "the black and yellow banding of bees and wasps" (同)banding, stria, striation
an adornment consisting of a strip of a contrasting color or material (同)banding, stripe
bind or tie together, as with a band
a driving belt in machinery
a restraint put around something to hold it together
a thin flat strip of flexible material that is worn around the body or one of the limbs (especially to decorate the body)
a thin flat strip or loop of flexible material that goes around or over something else, typically to hold it together or as a decoration
a range of frequencies between two limits
instrumentalists not including string players
(physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber) (同)muscular_contraction, muscle_contraction
the act of decreasing (something) in size or volume or quantity or scope
a word formed from two or more words by omitting or combining some sounds; "`wont is a contraction of `will not"; "`oclock is a contraction of `of the clock"
100 bani equal 1 leu in Moldova
100 bani equal 1 leu in Romania
prohibit especially by legal means or social pressure; "Smoking is banned in this building"
an official prohibition or edict against something (同)banning, forbiddance, forbidding
forbid the public distribution of ( a movie or a newspaper) (同)censor
marked with bands or strips of contrasting color or texture; "a banded rock"
characterized by a band of especially white around the body; "banded cattle"
identified with a band especially around a leg; "kept watch for the return of their banded birds"
the localized death of living cells (as from infection or the interruption of blood supply) (同)mortification, gangrene, sphacelus

PrepTutorEJDIC

『帯』,『バンド』,ひも,(おけの)たが / (色の)すじ,しま / 周波数 / …‘に'バンドを付ける
(人の)『一隊』,『一団』,一群《+『of』+『名』》 / 『楽隊』,バンド / …'を'一隊(一団)にする / 団結する《+『together』》,(…と)一団になる《+『with』+『名』》
〈U〉〈C〉(…の)収縮,短縮《+『of』+『名』》 / 〈U〉(通貨・資金・支出などの)縮小,節減《+『of』+『名』》 / 〈U〉(いやなこと・よくないことを)身に負うこと,(悪習などが)身につくこと《+『of』+『名』》 / 〈C〉陣痛
(法による)(…に対する)『禁止』,禁制(prohibition)《+『on』+『名』》 / (世論などの)反対,非難 / (教会の)破門 / (法律や社会的圧力によって)…'を'『禁ずる』,禁止する
壊疽(えそ)

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/09/16 18:15:05」(JST)

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High magnification micrograph showing contraction band necrosis and karyolysis. H&E stain.

Contraction band necrosis is a type of uncontrolled cell death (necrosis) unique to cardiac myocytes and thought to arise in reperfusion from hypercontraction, which results in sarcolemmal rupture.^[1]

It is a characteristic histologic finding of a recent myocardial infarction (heart attack) that was partially reperfused.

The name of the histopathologic finding comes from the appearance under the microscope; contraction bands are thick intensely eosinophilic staining bands (typically 4-5 micrometres wide) that span the short axis of the myocyte. They can be thought of extra thick striae, typical of cardiac muscle and striated muscle.

Pathophysiology

Contraction band necrosis is thought to arise by two mechanisms:^[1]

a calcium-dependent mechanism - activation of the contractile machinery of the cell via its usual mechanism, calcium, which is in excess due to ischemia.
a calcium-independent mechanism, as seen in rigor mortis - activation of the contractile machinery in the setting of low ATP.

Reperfusion associated cell death has been modulated (reduced) in animal studies^[2] and is an area of active research, which holds the potential to significantly reduce the morbidity (disease burden) and mortality (death) of cardiovascular disease.^[1]

Additional images

Contraction band necrosis. H&E stain.
Contraction band necrosis. PTAH.

References

^ ^a ^b ^c Rodríguez-Sinovas A, Abdallah Y, Piper HM, Garcia-Dorado D (December 2007). "Reperfusion injury as a therapeutic challenge in patients with acute myocardial infarction". Heart Fail Rev 12 (3-4): 207–16. doi:10.1007/s10741-007-9039-9. PMID 17530396.
^ Garcia-Dorado D, Inserte J, Ruiz-Meana M et al. (November 1997). "Gap junction uncoupler heptanol prevents cell-to-cell progression of hypercontracture and limits necrosis during myocardial reperfusion". Circulation 96 (10): 3579–86. doi:10.1161/01.cir.96.10.3579. PMID 9396458.

External links

Contraction band necrosis - pathologypics.com

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Kesdangsakonwut S1, Sunden Y2, Yamada K3, Nishizono A3, Sawa H4, Umemura T5.
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Ventricular arrhythmias induced by long-term use of ephedrine in two competitive athletes.

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Japanese Journal

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