
人脑血管周围色素的性质探究及其与年龄和性别及脑区的相关性
朱颖琳, 陈泽宇, 陈懿璇, 肖旭东, 吕俊耀, 于晓军
人脑血管周围色素的性质探究及其与年龄和性别及脑区的相关性
Nature of human cerebral vascular pigment and its association with age,sex,and brain regions
目的 鉴别不同个体的脑血管周围色素(cerebral vascular pigment,CVP)的性质,并探索其与年龄、性别、脑区的相关性。 方法 选取146例法医尸检案例的脑组织,采用苏木精-伊红染色法(hematoxylin-eosin stain,HE)、普鲁士蓝染色法、改良Fouchet胆色素染色法、苯酚酒精(alkylphenol ethoxylate,APE)去除福尔马林颗粒染色法、高锰酸钾/草酸(potassium permanganate/oxalic acid,PPO)去除黑色素染色法、硫酸亚铁染色法、Schmorl染色法以及酪氨酸酶相关蛋白1(tyrosinase related protein 1,TRP-1)免疫组化染色法对CVP进行性质分析。采用SPSS 26.0软件进行统计分析,利用卡方检验分析不同性别、年龄和脑区之间的CVP检出情况。 结果 CVP在HE染色法、普鲁士蓝染色法、改良Fouchet胆色素染色法、APE去除福尔马林颗粒染色法中均呈棕黄色,在PPO去除黑色素染色法中成功被去除,在硫酸亚铁染色法和Schmorl染色法中呈墨绿色、黑色改变,在TRP-1免疫组化染色法中呈红色阳性结果。不同年龄组之间,CVP检出率差异有统计学意义(P<0.001),呈增龄性加重改变;在不同部位脑组织之间,CVP检出率差异有统计学意义(P<0.001),顶叶的检出率远高于额叶、颞叶、枕叶;而不同性别之间的CVP检出率差异无统计学意义(P>0.050)。 结论 CVP为黑色素,我们希望通过探讨它潜在的来源和功能,为神经系统的相关科学研究提供参考依据,促进神经科学尤其是神经病理学的发展。
Objective To investigate the nature of cerebral vascular pigment(CVP) in different individuals and its association with age,sex,and brain regions. Methods Brain tissue samples were collected from 146 forensic autopsy cases,and the nature of CVP was analyzed by HE staining,Prussian blue staining,modified Fouchet bile pigment staining,the alkylphenol ethoxylate(APE) method for removing formalin pigment,the potassium permanganate/oxalic acid(PPO) method for removing melanin,ferrous sulfate staining,Schmorl staining,and immunohistochemical staining of tyrosinase-related protein 1(TRP-1). SPSS 26.0 software was used for statistical analysis,and the chi-square test was used to analyze the detection of CVP across different sexes,ages,and brain regions. Results CVP appeared to be brown-yellow in HE staining,Prussian blue staining,modified Fouchet bile pigment staining,and APE staining,and it was successfully removed by PPO staining for removing melanin. CVP exhibited greenish-black changes in ferrous sulfate staining and Schmorl staining and showed red-positive results in TRP-1 immunohistochemical staining. There was a significant difference in the detection rate of CVP across different age groups(P<0.001),which aggravated with the increase in age;there was a significant difference in the detection rate of CVP between different brain regions(P<0.001),and the detection rate of CVP in the parietal lobe was significantly higher than that in the frontal lobe,the temporal lobe,and the occipital lobe; however,there was no significant difference in the detection rate of CVP between different sexes(P>0.050). Conclusion CVP is melanin pigment,and exploration of its potential sources and functions can provide a basis for nervous system-related disciplines and promote the development of neuroscience,especially neuropathology.
特殊染色 / 组织学染色 / 脑血管 / 色素沉着 / 黑色素 / 神经病理学 / 病理学
specific staining / histological staining / cerebral blood vessels / pigmentation / melanin / neuropathology / pathology
R361+.2 / R89
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