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高龄肝脏与低龄肝脏生理差异的实验性研究

Experimental of physiological differences between elderly and younger livers in rats

来源期刊: 广州医药 | 7-12 发布时间:2021-11-30 收稿时间:2025/11/13 16:48:08 阅读量:33
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关键词:
高龄肝移植SMP-30超声弹性成像
ElderlyLiver transplantationSMP-30Ultrasound elastography
DOI:
10.3969/j.issn.1000-8535.2015.02.003
收稿时间:
2015-01-10 
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目的 探讨生理情况下高龄肝脏与低龄肝脏的区别,寻找可以区分高龄肝脏与低龄肝脏的指标。方法 取6周龄SD大鼠和9月龄以上退役SD大鼠各5只,采用超声弹性成像检测肝脏硬度、全自动生化检测仪检测血清学指标、H&E染色观察肝脏形态结构、Sirius Red染色及Masson染色检测胶原纤维的沉积、免疫组化SP法检测TGF-β1、p16INK4a、SMP-30蛋白的表达。结果 高龄组和低龄组之间血清学指标、胶原纤维沉积及TGF-β蛋白、p16INK4a蛋白的表达无差异;超声弹性成像检测低龄组Vs值为(1.21±0.09)m/s,高龄组为(1.32±0.05)m/s(P=0.033);SMP-30蛋白低龄组IOD值为138244.988±51286.257,高龄组为116240.170±35017.936(P=0.007)。结论 高龄大鼠与低龄大鼠肝脏的硬度及SMP-30蛋白的表达存在差异,随着年龄的增加肝脏硬度增大,SMP-30蛋白表达下降。肝脏硬度与SMP-30蛋白可作为区分高龄肝脏与低龄肝脏的指标。
Objective To investigate the differences between elderly and younger liver. Methods In accordance with the age of the SD rats into two groups: younger group (Group Y, 6 weeks, n=5) and elderly group (Group O, 40 weeks or more, n=5). Data were compared by using ultrasound elasticity imaging to detect liver stiffness, automatic biochemical detector to gauge serum indexes, H&E staining to observe the liver morphological structure, Sirius Red staining and Masson staining to assay the collagen fibers deposition, Immunohistochemistry to identify the expression of TGF-β1, p16INK4a and SMP-30 protein. Results Serum indexes, collagen deposition, TGF-β1 and p16INK4a protein expression were no statistically significant difference between two groups. The Vs value was (1.21±0.09) m/s in Group Y and (1.32±0.05) m/s in Group O (P=0.033). and the IOD value of SMP-30 protein between Group Y and Group O were 138244.988±51286.257 and 116240.170±35017.936 (P=0.007). Conclusion The degree of liver stiffnessnd and SMP-30 protein in elderly and younger liver are different.Increased the degree of liver stiffness and decreased the expression of SMP-30 protein in the elderly SD rats. Liver stiffness and SMP-30 protein could be used as indicators to distinguish between elderly and younger liver.
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