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首页> 外文期刊>Journal of Neuroscience Methods >Surface fractal computation and its application to immunofluorescent histochemical studies of calpain and calpastatin in PC12 cells.
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Surface fractal computation and its application to immunofluorescent histochemical studies of calpain and calpastatin in PC12 cells.

机译:表面分形计算及其在PC12细胞中钙蛋白酶和钙蛋白酶抑素的免疫荧光组织化学研究中的应用。

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The purpose of this report is to present a method which can be used to parameterize patterns of immunofluorescent staining in cultured neural cells. The algorithm is based on the observation that the variance in pixel intensity of the image is a power function of the magnitude of the area in immunofluorescently stained PC12 cells. This property is used to derive the fractal dimension (D) of the region of interest (ROI), and corresponds to the complexity of the pixel intensity associated with the ROI, which is analogous to a fractal surface. We show that the measure is useful in characterizing immunofluorescent staining patterns, and apply this measure to study the effects of ethanol exposure on mu-calpain and calpastatin-associated immunoreactivity. Exposure of PC12 cells to ethanol (80 mM)x48 h resulted in alterations in immunofluorescent signal (Control vs ethanol) associated with actin, calpastatin and mu-calpain: 2289+/-166 vs 1709+/-69, P<0.01; 1681+/-38 vs 2224+/-95, P<0.001; 1823+/-39 vs 2841+/-68, P<0.0001 respectively, magnitudes being pixel intensity units on a scale of 0-4095. D-values for the three proteins in the same order were: 2.32+/-0.01 vs 2.31+/-0.03, NS; 2.31+/-0.01 vs 2.32+/-0.01, NS; 2.16+/-0.03 vs 2. 24+/-0.02, P<0.01, with a possible D-value range of 2-3.
机译:本报告的目的是提出一种可用于对培养的神经细胞中的免疫荧光染色模式进行参数化的方法。该算法基于以下观察结果:图像像素强度的变化是免疫荧光染色的PC12细胞中面积大小的幂函数。此属性用于导出感兴趣区域(ROI)的分形维数(D),并与与ROI相关的像素强度的复杂度相对应,类似于分形表面。我们表明该措施可用于表征免疫荧光染色模式,并将此措施应用于研究乙醇暴露对mu-钙蛋白酶和钙蛋白酶抑制剂相关免疫反应性的影响。 PC12细胞暴露于乙醇(80 mM)x48 h导致与肌动蛋白,钙蛋白酶抑制剂和mu-钙蛋白酶相关的免疫荧光信号发生改变(对照与乙醇):2289 +/- 166与1709 +/- 69,P <0.01; 1681 +/- 38和2224 +/- 95,P <0.001;分别为1823 +/- 39和2841 +/- 68,P <0.0001,其大小是像素强度单位,范围为0-4095。三种蛋白质以相同顺序的D值分别为:2.32 +/- 0.01与2.31 +/- 0.03,NS; NS:2.31 +/- 0.01与2.32 +/- 0.01; 2.16 +/- 0.03与2.24 +/- 0.02,P <0.01,可能的D值范围为2-3。

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