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Взаимодействие наночастиц магнетита, покрытых полимерами, с нервными терминалями головного мозга и тромбоцитами крови

Взаимодействие наночастиц магнетита, покрытых полимерами, с нервными терминалями головного мозга и тромбоцитами крови

Abstract

С точки зрения нанонейротехнологии использование магнитных наночастиц является чрезвычайно перспективным для транспортировки биологически активных веществ и лекарств к клеткаммишеням при наружном манипулировании и в противоопухолевой терапии. Подобраны условия взаимодействия синтезированных наночастиц магнетита, покрытых декстраном, гидроксиэтилкрахмалом, окисленным гидроксиэтилкрахмалом, хитозаном и кремнеземом, с нервными терминалями головного мозга и тромбоцитами крови (как периферической моделью пресинапса). Методами фотонной корреляционной спектроскопии и проточной цитометрии показано связывание наночастиц с нервными терминалями и тромбоцитами. Проанализирован потенциал плазматической мембраны нервных терминалей и тромбоцитов с использованием потенциалчувствительного флуоресцентного зонда родамина 6 G и показано отсутствие влияния наночастиц на этот показатель. С применением рНчувствительного флуоресцентного зонда акридинового оранжевого установлено, что закисление синаптических везикул нервных терминалей и секреторных гранул тромбоцитов не изменяется в присутствии наночастиц.

In nanoneurotechnology, usage of magnetic nanoparticles is a very perspective way for transport of active substances and drugs to target cells in response to external manipulation and anticancer therapy. Interaction of synthesized nanoparticles of magnetite covered with dextrane, hydroxyethyl starch, oxidized hydroxyethyl starch, chitozan and silica with brain nerve terminals and blood platelets (as peripheral model of presynapse) was analyzed. The binding of nanoparticles with nerve terminals and platelets was demonstrated using photon correlation spectroscopy and flow cytometry. Using potentialsensitive fluorescent dye rhodamine 6 G, we showed that nanoparticles did not influence the potential of the plasma membrane of nerve terminals and platelets. Acidification of synaptic vesicles of nerve terminals and secretory granules of platelets was not changed in the presence of nanoparticles that was revealed with pHsensitive fluorescent dye acridine orange.

Keywords

НАНОЧАСТИНКИ МАГНЕТИТУ, СИНАПТОСОМИ, ТРОМБОЦИТИ, НАНОЧАСТИЦЫ МАГНЕТИТА, СИНАПТОСОМЫ, ТРОМБОЦИТЫ

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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
gold
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