AIM: To study the effects of chromic-P32 phosphate (32p colloids) interstitial administration in Pc-3 implanted pancreatic carcinoma, and investigate its anticancer mechanism.METHODS: Ninety-eight tumor bearing nude m...AIM: To study the effects of chromic-P32 phosphate (32p colloids) interstitial administration in Pc-3 implanted pancreatic carcinoma, and investigate its anticancer mechanism.METHODS: Ninety-eight tumor bearing nude mice werekilled at different time points after the injection of 32Pcolloids to the tumor core with observed radioactivity. The light microscopy, transmission electron microscopy (TEM) and immuno-histochemistry and flow cytometry were used to study the rates of tumor cell necrosis, proliferating cell nuclear antigen index, the micro vessel density (MVD). The changes of the biological response to the lymphatic transported 32p colloids in the inguinal lymph node (ILN) were dynamically observed, and the percentage of tumor cell apoptosis, and Apo2.7, caspase-3, Bcl-2, Baxrelated gene expression were observed too.RESULTS: The half-life of effective medication is 13 dafter injection of 32P colloids to the tumor stroma, in 1-6groups, the tumor cell necrosis rates were 20%, 45%,65%, 70%, 95% and 4%, respectively (F= 4.14-105.36, P＜0.01). MVD were 38.5±4.0, 28.0±2.9, 17.0±2.9, 8.8±1.5,5.7±2.3 and 65.0±5.2 (t= 11.9-26.1, P＜0.01), respectively.Under TEM fairly differentiated Pc-3 cells were found. Thirty days after medication, tumors were shrunk and dried with scabs detached, and those in control group increased in size prominently with plenty of hypodermic blood vessels. In all animals the ILN were enlarged but in medicated animals they appeared later and smaller than those in control group. The extent of irradiative injury in ILN was positively correlated to the dosage of medication. Typical tumor cell apoptosis could be found under TEM inanimals with intra-tumoral injection of low dosed 32P colloids. The peak of apoptosis occurred in 2.96 MBq group and 24 h after irradiation. In the course of irradiationinduced apoptosis, the value of Bcl-2/Bax was down regulated; Apo2.7 and caspase-3 protein expression were prominently increased dose dependently. CONCLUSION: 32p colloids intra-tumor injection having prominent anticancer effectiveness may reveal the ability of promoting cell differentiation. The low dose 32P colloids may induce human pancreatic carcinoma Pc-3 implanted tumor cell apoptosis; Apo2.7, caspase-3, Bcl-2 and Bax protein participated in regulating the process of irradiation induced cell apoptosis.展开更多
目的:探讨序贯激光结合^(32)P同位素敷贴协同治疗烧伤增生性瘢痕的疗效及对瘢痕组织TGF-β_(1)、BMP-7的影响。方法:选择2021年3月-2023年3月在笔者医院收治的124例烧伤增生性瘢痕患者,随机分为对照组和观察组,每组62例。对照组患者均...目的:探讨序贯激光结合^(32)P同位素敷贴协同治疗烧伤增生性瘢痕的疗效及对瘢痕组织TGF-β_(1)、BMP-7的影响。方法:选择2021年3月-2023年3月在笔者医院收治的124例烧伤增生性瘢痕患者,随机分为对照组和观察组,每组62例。对照组患者均予以序贯激光治疗,观察组在接受激光治疗后给予^(32)P同位素敷贴。比较两组患者的总有效率、瘙痒视觉模拟评分(VAS)、温哥华瘢痕量表(Vancouver scar scale,VSS)评分、简明健康状况调查量表(Short form 36 health survey,SF-36)评分、监测瘢痕组织中TGF-β_(1)、BMP-7水平及不良反应发生情况。随访6个月,观察两组患者的复发率。结果:末次治疗后,观察组患者的总有效率、SF-36评分均高于对照组(P<0.05);观察组患者的VAS评分、VSS评分均低于对照组(P<0.05);观察组患者的TGF-β_(1)水平低于对照组,BMP-7水平高于对照组(P<0.05)。两组患者在不良反应发生率方面差异无统计学意义(P>0.05)。随访6个月后,观察组患者的复发率低于对照组(P<0.05)。结论:序贯激光结合^(32)P同位素敷贴协同治疗烧伤后增生性瘢痕能够有效改善患者的临床症状和生活质量,降低复发风险,同时能够调节TGF-β_(1)和BMP-7在瘢痕形成过程中的平衡,抑制成纤维细胞增殖和胶原沉积。展开更多
基金Supported by the Jiangsu Province Public Health Bureau Foundation,No. H200117, and Jiangsu Science Technology Foundation, No.2000004
文摘AIM: To study the effects of chromic-P32 phosphate (32p colloids) interstitial administration in Pc-3 implanted pancreatic carcinoma, and investigate its anticancer mechanism.METHODS: Ninety-eight tumor bearing nude mice werekilled at different time points after the injection of 32Pcolloids to the tumor core with observed radioactivity. The light microscopy, transmission electron microscopy (TEM) and immuno-histochemistry and flow cytometry were used to study the rates of tumor cell necrosis, proliferating cell nuclear antigen index, the micro vessel density (MVD). The changes of the biological response to the lymphatic transported 32p colloids in the inguinal lymph node (ILN) were dynamically observed, and the percentage of tumor cell apoptosis, and Apo2.7, caspase-3, Bcl-2, Baxrelated gene expression were observed too.RESULTS: The half-life of effective medication is 13 dafter injection of 32P colloids to the tumor stroma, in 1-6groups, the tumor cell necrosis rates were 20%, 45%,65%, 70%, 95% and 4%, respectively (F= 4.14-105.36, P＜0.01). MVD were 38.5±4.0, 28.0±2.9, 17.0±2.9, 8.8±1.5,5.7±2.3 and 65.0±5.2 (t= 11.9-26.1, P＜0.01), respectively.Under TEM fairly differentiated Pc-3 cells were found. Thirty days after medication, tumors were shrunk and dried with scabs detached, and those in control group increased in size prominently with plenty of hypodermic blood vessels. In all animals the ILN were enlarged but in medicated animals they appeared later and smaller than those in control group. The extent of irradiative injury in ILN was positively correlated to the dosage of medication. Typical tumor cell apoptosis could be found under TEM inanimals with intra-tumoral injection of low dosed 32P colloids. The peak of apoptosis occurred in 2.96 MBq group and 24 h after irradiation. In the course of irradiationinduced apoptosis, the value of Bcl-2/Bax was down regulated; Apo2.7 and caspase-3 protein expression were prominently increased dose dependently. CONCLUSION: 32p colloids intra-tumor injection having prominent anticancer effectiveness may reveal the ability of promoting cell differentiation. The low dose 32P colloids may induce human pancreatic carcinoma Pc-3 implanted tumor cell apoptosis; Apo2.7, caspase-3, Bcl-2 and Bax protein participated in regulating the process of irradiation induced cell apoptosis.
文摘目的:探讨序贯激光结合^(32)P同位素敷贴协同治疗烧伤增生性瘢痕的疗效及对瘢痕组织TGF-β_(1)、BMP-7的影响。方法:选择2021年3月-2023年3月在笔者医院收治的124例烧伤增生性瘢痕患者,随机分为对照组和观察组,每组62例。对照组患者均予以序贯激光治疗,观察组在接受激光治疗后给予^(32)P同位素敷贴。比较两组患者的总有效率、瘙痒视觉模拟评分(VAS)、温哥华瘢痕量表(Vancouver scar scale,VSS)评分、简明健康状况调查量表(Short form 36 health survey,SF-36)评分、监测瘢痕组织中TGF-β_(1)、BMP-7水平及不良反应发生情况。随访6个月,观察两组患者的复发率。结果:末次治疗后,观察组患者的总有效率、SF-36评分均高于对照组(P<0.05);观察组患者的VAS评分、VSS评分均低于对照组(P<0.05);观察组患者的TGF-β_(1)水平低于对照组,BMP-7水平高于对照组(P<0.05)。两组患者在不良反应发生率方面差异无统计学意义(P>0.05)。随访6个月后,观察组患者的复发率低于对照组(P<0.05)。结论:序贯激光结合^(32)P同位素敷贴协同治疗烧伤后增生性瘢痕能够有效改善患者的临床症状和生活质量,降低复发风险,同时能够调节TGF-β_(1)和BMP-7在瘢痕形成过程中的平衡,抑制成纤维细胞增殖和胶原沉积。
