傅文会,曾成润,张心怡,徐婷婷,赵艳红,张伟,邓永琼,蒋晓丽,赵岩,陈跃.A型肉毒毒素对大鼠唾液腺及22RV1荷瘤鼠瘤体摄取68Ga-PSMA-11的影响[J].中国医学影像技术,2022,38(2):161~166 |
A型肉毒毒素对大鼠唾液腺及22RV1荷瘤鼠瘤体摄取68Ga-PSMA-11的影响 |
Effects of botulinum toxin type A on salivary glands 68Ga-PSMA-11 uptake in rats and tumors of 22RV1 tumor-bearing mice |
投稿时间:2021-04-28 修订日期:2021-11-04 |
DOI:10.13929/j.issn.1003-3289.2022.02.001 |
中文关键词: 前列腺肿瘤 前列腺特异性抗原 涎腺 肉毒毒素,A型 正电子发射断层显像 体层摄影术,X线计算机 |
英文关键词:prostatic neoplasms prostate-specific antigen salivary glands botulinum toxins, type A positron-emission tomography tomography, X-ray computed |
基金项目:国家自然科学基金(U20A20384)。 |
作者 | 单位 | E-mail | 傅文会 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | | 曾成润 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | | 张心怡 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | | 徐婷婷 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | | 赵艳红 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | | 张伟 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | | 邓永琼 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 皮肤科, 四川 泸州 646000 | | 蒋晓丽 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 医学整形美容中心, 四川 泸州 646000 | | 赵岩 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | | 陈跃 | 西南医科大学附属医院核医学科 核医学与分子影像四川省重点实验室 四川省院士(专家)工作站, 四川 泸州 646000 | chenyue5523@126.com |
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中文摘要: |
目的 观察A型肉毒毒素(BTX-A)对大鼠唾液腺及22RV1荷瘤鼠瘤体摄取68Ga-前列腺特异性膜抗原(PSMA)-11的影响。方法 将20只SD大鼠随机分为实验组大鼠(n=10)和对照组大鼠(n=10)。对实验组大鼠唾液腺注射BTX-A,对照组注射等量生理盐水(NS);分别于注射第1、2、3、4、5、6、7、8、12及16周后行68Ga-PSMA-11 micro PET/CT显像,计算2组靶/非靶比值(T/NT),即唾液腺最大标准摄取值(SUVmax)与大脑SUVmax比值。将10只22RV1荷瘤鼠随机分为实验组裸鼠(n=5)和对照组裸鼠(n=5),对实验组裸鼠唾液腺注射BTX-A,对照组裸鼠注射等量NS;分别于注射第1、2、3、4、5及6天后行68Ga-PSMA-11 micro PET/CT显像,计算T/NT,即瘤体SUVmax与本底SUVmax比值。结果 实验组大鼠双侧唾液腺摄取程度先逐渐下降,后逐渐增加;对照组大鼠双侧唾液腺摄取程度未见明显变化。注射后4~12周,实验组大鼠唾液腺T/NT均显著低于对照组大鼠(P均<0.05);注射16周后,病理学结果显示,2组唾液腺腺体结构清楚,小叶间导管与血管结构清晰,纤维结缔组织间隔均匀分布,腺泡细胞排列紧密、胞浆丰富、细胞核深染、无皱缩。而实验组裸鼠及对照组裸鼠显像剂摄取程度均先逐渐增加,于注射第3~4天达峰,之后呈下降趋势;不同时间段组间T/NT差异均无统计学意义(P均>0.05)。结论 BTX-A可有效减少大鼠唾液腺PSMA放射性配体聚集,避免影响荷瘤鼠瘤体特异性浓聚,提示其或有助于在PSMA放射性配体治疗过程中保护唾液腺。 |
英文摘要: |
Objective To observe the effects of botulinum toxin type A (BTX-A) on salivary glands uptake of 68Ga- prostate-specific membrane antigen (PSMA)-11 in rats and tumors of 22RV1 tumor-bearing mice. Methods Twenty SD rats were randomly divided into experimental group and control group (each n=10), and BTX-A was injected into salivary glands of SD rats in experimental group, while the same amount of normal saline (NS) were injected in control group. 68Ga-PSMA-11 micro PET/CT was performed 1 week, 2, 3, 4, 5, 6, 7, 8, 12 and 16 weeks after injection, respectively. The target/non-target (T/NT), i.e. the ratio of the maximum standard uptake value (SUVmax) of salivary glands and brain was calculated. Meanwhile, 10 22RV1 tumor-bearing mice were randomly divided into experimental group and control group (each n=5), and BTX-A was injected into salivary glands of tumor-bearing experimental group mice, while the same amount of NS were injected in control group. 68Ga-PSMA-11 micro PET/CT was performed 1 day, 2, 3, 4, 5 and 6 days after injection in mice, respectively. T/NT, i.e. the ratio of SUVmax of tumor and background was calculated. Results The uptake of bilateral salivary glands of SD rats in experimental group decreased at first and then increased gradually, while there was no significant change in control group. T/NT of salivary glands in rats in experimental group were significantly lower than that in control group (all P<0.05) 4-12 weeks after injection. After 16 weeks, the pathological results showed that the structure of salivary glands, interlobular ducts and vessels of SD rats were clear, the fibrous connective tissue distributed evenly, and the acinar cells arranged closely with abundant cytoplasm, deeply stained nucleus without shrinkage. The uptake of tumors of tumor-bearing mice in experimental group and control group all increased gradually at first, reached the peak on the 3rd-4th day, and then decreased. There was no significant difference of T/NT between 2 groups in different periods (all P>0.05). Conclusion BTX-A could not only effectively reduce the aggregation of PSMA radioactive ligands in salivary gland of rat, but also avoid affecting developer gathered in tumor of tumor-bearing mice, indicating that it might be helpful for protecting salivary gland during PSMA-radioligand therapy. |
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