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机构地区:[1]浙江省肿瘤医院乳腺外科,杭州310022 [2]浙江大学附属第一医院PET中心,杭州310003
出 处:《中国医药》2016年第3期391-395,共5页China Medicine
基 金:浙江省医药卫生科技计划(2008A013);浙江省第三批公益技术应用研究项目(2011C23043)
摘 要:目的 研究观察自制雌激素受体显像剂16α-^18F-17β-雌二醇(^18F-FES)在正常昆明小鼠和荷乳腺癌小鼠体内的生物分布,探讨其对乳腺癌患者雌激素受体表达的可能预测价值.方法 自行制备^18F-FES,采用人乳腺癌细胞系MCF-7构建荷瘤裸鼠动物模型,观察^18F-FES在正常昆明小鼠和荷瘤裸鼠体内的生物分布及摄取情况.并进行micro-正电子发射计算机断层显像(PET)/CT显像加以验证.结果 在正常昆明小鼠和MCF-7细胞荷瘤裸鼠中,18 F-FES主要分布于肝脏以及肾脏中,于注射药物后60 min达摄取高峰[昆明小鼠30、60、120、180 min肝脏分别为:(5.77±1.68)、(8.54±0.45)、(5.80±0.46)、(3.61±0.55)%ID/g,肾脏分别为(2.28±0.81)、(2.90±1.22)、(1.78±1.04)、(1.80±1.10)%ID/g;MCF-7细胞荷瘤裸鼠30、60、120、180 min肝脏分别为:(8.77±2.31)、(9.29±3.47)、(13.20±4.56)、(9.65±5.32)% ID/g,肾脏分别为(3.55±1.31)、(6.33±2.65)、(4.64±1.87)、(2.47±1.53)%ID/g].荷瘤裸鼠的生物分布及显像数据均证实肿块部位摄取^18F-FES明显高于正常组织,于注射药物后120 min达摄取高峰[30、60、120、180 min分别为:(1.83±0.39)、(2.67±1.25)、(4.59±1.29)、(3.97±1.35)%ID/g].结论 ^18F-FES在肿瘤中有较高的摄取,有望用于研究乳腺癌患者体内雌激素受体的表达,在指导个体化治疗方面有潜在的应用前景.Objective To observe the distribution of 16α-^18F-17β-estradiol (^18F-FES) in normal mice and mice with breast cancer and to analyze its predictive value on the expression of estrogen receptor in breast cancer patients.Methods ^18F-FES was self-prepared.The tumor bearing nude mice of breast cancer MCF-7 cells were established,then the biological distribution and uptake of ^18F-FES in normal mice and tumor bearing nude mice were observed and confirmed by micro-positron emission tomography (PET)/CT.Results ^18F-FES was mainly distributed in liver and kidney,and reached peak 60 min after injection in normal mice [liver:30 min:(5.77 ±1.68) %ID/g,60 min:(8.54±0.45) %ID/g,120 min:(5.80±0.46) %ID/g,180 min:(3.61 ± 0.55) %ID/g;kidney:30 min:(2.28±0.81) %ID/g,60 min:(2.90±1.22) %ID/g,120 min:(1.78 ± 1.04) % ID/g,180 min:(1.80 ± 1.10) % ID/g] and tumor bearing nude mice [liver:30 min:(8.77 ± 2.31) %ID/g,60 min:(9.29 ±3.47) % ID/g,120 min:(13.20 ±4.56) % ID/g,180 min:(9.65 ± 5.32) % ID/g;kidney:30 min:(3.55 ± 1.31) % ID/g,60 min:(6.33 ± 2.65) % ID/g,120 min:(4.64 ± 1.87) % ID/g,180 min:(2.47 ± 1.53) % ID/g].In tumor bearing nude mice The biological distribution and imaging showed that the uptake of ^18F-FES was significantly higher in tumor than that in normal tissues,and reach peak 120 min after injection [30 min:(1.83 ± 0.39) % ID/g,60 min:(2.67 ± 1.25) % ID/g,120 min:(4.59 ± 1.29) % ID/g,180 min:(3.97 ± 1.35) % ID/g].Conclusion ^18F-FES shows high intake in the tumor and is expected to be used to study the expression of estrogen receptor in breast cancer patients.
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