不同粒徑納米氧化鋁致神經(jīng)細(xì)胞死亡方式的研究
[Abstract]:[Objective] To study the way to induce the death of nerve cells with different particle size of nano-alumina by in vitro experiment, and to probe into the main methods of death. [Method] 1. To observe the dispersion of 10 nm alumina and 50 nm alumina particles in solution and the condition of micro-aluminum particles and nano-carbon particles to enter the cell:1) The 50 nm Al2O3 and 10 nm Al2O3 storage solution were sonicated for 10 minutes, and the dispersion was observed under the electron microscope;2)10 nm-C,10. m 1) detecting the occurrence of autophagy bodies;2) detecting the expression of autophagy related genes LC3-II and Atg-5. .[Results] 1. The dispersion of the 10 nm alumina and 50 nm nano-alumina particles in the solution and the entry of the micro-aluminum particles and the nano-carbon particles into the cell:1) The shape and the dispersion degree of the nano-alumina particles and the nano-carbon particles were not significantly changed after the ultrasonic mixing of the nano-alumina, and it was in accordance with the requirements of experimental exposure;2) Both the nano-carbon and the micron-sized alumina particles can enter the nerve cell.2) The morphology of the nano-alumina on the vitality of the nerve cells and the mode of death:1) The cell viability and the mode of death of the cells were observed:1) The cells were intact, the cytoplasm is full, the cell connection is rich, the cell membrane is broken, the cytoplasm is concentrated, but the cell body is basically intact, the synapse is short, but the cell body is clearly visible; the number of cells in the 50-nm-Al2O3 group and the 10-nnAl2O3 group is small, the intercell connection is interrupted, and the cell is swollen. In the normal control group and in the AlCl3 group, only a small amount of MDC positive cells were observed, and the number of AV in each cell was very small; the number of the AV in each cell was small; the number of AV in each cell was much higher; the number of cells in each cell was much higher; the number of cells in each cell was increased; the number of cells in the 50 nm Al _ 2O _ 3 group and the 10 nm Al _ 2O _ 3 group was small, the number of the cells in each cell was increased, and the MDC positive cells were filled with the field of view, and a large number of AV.3.3. The apoptosis, necrosis and autophagy of the cells were determined by the observation of the ultrastructure of the nerve cells after exposure. High.[Conclusion] 1. Nano-alumina has decreased the vitality of the nerve cells,2. The death of the nerve cells induced by nano-oxide has the effects of apoptosis and autophagy.3. The degree of cell death caused by the nano-alumina has a particle size dependence, and the degree of damage to the nerve cells is increased with the decrease of its particle size;4. The primary way of the preliminary determination of the death of the nerve cells caused by the nano-alumina is:
【學(xué)位授予單位】:山西醫(yī)科大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2012
【分類(lèi)號(hào)】:R114
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