Quantification of tartrate resistant acid phosphatase activity using a computerized image analysis system.

Quantification of tartrate resistant acid phosphatase activity using a computerized image analysis system.
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使用计算机图像分析系统定量抗酒石酸酸性磷酸酶活性。

DOI:
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发表时间:
1991
影响因子:
1.6
通讯作者:
G. Schneider
G. Schneider
中科院分区:
工程技术4区
文献类型:
--
作者:
J. D. Kelly;J. Mcnulty;G. Schneider

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抗酒石酸酸性磷酸酶(TRAP)已被公认为破骨细胞鉴定的标志物。本文报道了一种用图象分析系统定量TRAP的方法。破骨细胞特异性酶的量可用于将破骨细胞与能够表达TRAP的其它细胞区分开。破骨细胞的TRAP表达特征与招募到皮下植入矿化骨基质部位的多核巨细胞(MNGC)的TRAP表达特征进行了比较。植入后两周,取出颗粒并进行处理,以证明TRAP沿着大鼠近端胫骨。原位破骨细胞持续表达大量TRAP。与矿化骨植入物相关的MNGC几乎不表达任何TRAP反应产物。使用该系统,TRAP反应产物或表达的任何其它酶反应产物的量可以被客观地和可再现地定量。
Tartrate resistant acid phosphatase (TRAP) has been accepted as a marker for identification of osteoclasts. A method is reported here for quantitating TRAP using an image analysis system. The amount of the enzyme specific to osteoclasts can be used to differentiate osteoclasts from other cells capable of TRAP expression. TRAP expression characteristic of the osteoclast was compared with that of multi-nucleated giant cells (MNGC)s recruited to the site of subcutaneously implanted mineralized bone matrix. Two weeks post-implantation, the pellets were removed and processed for the demonstration of TRAP along with rat proximal tibiae. A large amount of TRAP was consistently expressed by the in situ osteoclasts. The MNGCs associated with the mineralized bone implants expressed little if any TRAP reaction product. Using this system, the amount of TRAP reaction product or any other enzyme reaction product expressed can be objectively and reproducibly quantitated.
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