目的:前列腺特异性膜抗原(prostate specific membrane antigen,PSMA)可作为前列腺癌诊断的重要靶点。该研究成功制备了1种新型68Ga标记PSMA小分子抑制剂PSMA11,并根据《中华人民共和国药典》标准进行质量控制,同时探讨该分子影像探针...
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目的:前列腺特异性膜抗原(prostate specific membrane antigen,PSMA)可作为前列腺癌诊断的重要靶点。该研究成功制备了1种新型68Ga标记PSMA小分子抑制剂PSMA11,并根据《中华人民共和国药典》标准进行质量控制,同时探讨该分子影像探针在前列腺癌动物模型中的靶向显像效果。方法:利用68Ge/68Ga发生器淋洗产生68Ga液,标记PSMA11制备正电子分子探针68Ga-PSMA11;建立符合药典标准的质量标准草案,对药品进行质量控制;利用小动物PET/CT,在人前列腺癌细胞LNCaP的SCID小鼠移植瘤模型上研究68Ga-PSMA11在注射后体内动态分布情况。结果:成功制备获得68GaPSMA11,质量控制符合规定,放射化学纯度大于99%,其在体内除肾脏及膀胱放射性生理性高分布外,在肿瘤部位有较明显特异性浓聚,其余器官组织放射性分布均处于较低水平。结论:68Ga-PSMA11标记方法简便,在体内肿瘤中特异性摄取程度高,是一个理想的正电子型PSMA特异性分子探针。
Introduction & Objectives: Asian population has been reported to have lower incidence of prostate cancer,compared with other ethnic *** polymorphism is hypothesized to be reason of variation in prostate cancer inc...
Introduction & Objectives: Asian population has been reported to have lower incidence of prostate cancer,compared with other ethnic *** polymorphism is hypothesized to be reason of variation in prostate cancer incidence among different racial *** data on the association of prostate cancer susceptibility with polymorphisms in genes encoding Glutathione S-transferases(GSTs),which inactivate procarcinogens and thus contribute to carcinogenesis,are *** more precisely address the role of GSTs polymorphisms(especially,GSTT1 and GSTM1 deletions)on prostate cancer risk in Asian descent,a meta-analysis was performed.
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