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Диагностика миокарда in situ: возможности оптической биопсии

Диагностика миокарда in situ: возможности оптической биопсии

Abstract

Экспериментально апробирован метод лазерной индуцированной флуоресценции на предмет его способности к отражению состояния изолированного сердца крысы после глобальной ишемии и реперфузии. При помощи прибора ЛАКК-М зарегистрированы общеинтегральные сигналы флуоресценции. Отмечено, что пик поглощения индуцированного излучения и интенсивность флуоресценции на реперфузии достоверно ниже, что говорит о меньшей степени, скорости поглощения и отражения излучения. Данные характеристики говорят о сдвиге соотношения НАД+/НАДН в левую сторону, что является одним из ключевых процессов при ишемических и реперфузионных повреждениях. Метод лазерной индуцированной флуоресценции достаточно чувствителен к изменению данного соотношения, позволяет фиксировать жизнеспособность миокарда в режиме online и может явиться перспективным кандидатом диагностики состояния миокарда in situ.

The method of laser-induced fluorescence was tested in the model of global ischemia and reperfusion by using isolated rat hearts. The device LAКK-M was used to register integral fluorescence signals. Induced radiation absorption peak and fluorescence intensity were significantly lower in the reperfusion suggesting lower degree, absorption rate, and radiation reflection. These characteristics imply the left shift of NAD+/NADH ratio which is one of key processes in ischemia and reperfusion injury. The method of laser-induced fluorescence is significantly sensitive to changes in this ratio. It allows for real-time registration of myocardial viability and may represent promising in situ diagnostic modality for myocardial diseases.

Keywords

ИЗОЛИРОВАННОЕ СЕРДЦЕ,КАРДИОПЛЕГИЧЕСКИЙ АРЕСТ,ИШЕМИЯ И РЕПЕРФУЗИЯ,ЛАЗЕРНАЯ ИНДУЦИРОВАННАЯ ФЛУОРЕСЦЕНЦИЯ,ISOLATED HEART,CARDIOPLEGIC ARREST,ISCHEMIA AND REPERFUSION,LASER-INDUCED FLUORESCENCE

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
bronze