大豆异黄酮在不同的雌激素环境下对MMTV-erbB-2转基因小鼠的作用

目的 观察大豆异黄酮在不同的雌激素环境下,对MMTV-erbB-2转基因小鼠的乳腺肿瘤发生及发展的影响.方法 选取鼠龄5周的健康MMTV-erbB-2转基因雌性小鼠150只,分为对照组、低雌激素组1、低雌激素组2、高雌激素组1和高雌激素组2五组,观察各组小鼠乳腺癌的发病率和潜伏期,并采用免疫组织化学染色SP法检测各组小鼠乳腺组织中雌激素受体(ER)、孕激素受体(PR)、增殖细胞核抗原(PCNA)的表达.结果 对照组、低雌激素组1、低雌激素组2、高雌激素组1和高雌激素组2的乳腺癌发病率分别为73.3%、96.7%、30.3%、40.0%和83.3%,对照组与高雌激素组2、低雌激素组1与高雌激素组2发病率比较差异无统计学意义(P＞0.05),其他各组间比较差异有统计学意义(P＜0.05).各组小鼠乳腺癌平均潜伏期比较差异无统计学意义(P＞0.05).低雌激素组1的TEB数量与其他各组比较差异有统计学意义(P＜0.05).erbB-2表达在各组之间表达差异无统计学意义(P＞0.05).低雌激素组1、低雌激素组2、高雌激素组1和高雌激素组2与对照组乳腺ER和PR的表达比较差异无统计学意义(P＞0.05).低雌激素组1实验小鼠发生肿瘤的乳腺组织内PCNA的表达明显高于其他各组(P＜0.05).对照组与高雌激素组2,低雌激素组1与高雌激素组2比较差异有统计学意义(P＜0.05),其他各组间比较差异有统计学意义(P＜0.05).结论 大豆异黄酮在不同的雌激素环境下,对MMTV-erbB-2转基因小鼠乳腺肿瘤的发生及发展起不同的作用.低雌激素环境下大豆异黄酮可促进乳腺肿瘤的发生及发展,高雌激素环境下大豆异黄酮可抑制乳腺肿瘤的发生及发展.

Abstract：

Objective To investigate the effect of the soybean isoflavones at different estrogen environments on the pathogenesis of breast cancer in MMTV-erbB-2 transgenic mice. Methods 150 fiveweek-old MMTV-erbB-2 transgenic female mice were phosen and divided into five groups; control group,low estrogen group 1, low estrogen group 2, high estrogen group 1 and high estrogen group 2. The incidence and latent period of breast cancer were observed, and the expression of estrogen receptor (ER) ,progesterone receptor (PR), and proliferating cell nuclear antigen (PCNA) proteins was detected by using immunohistochemistry SP method. Results The incidence of breast cancer in control group, low estrogen group 1, low estrogen group 2, high estrogen group 1 and high estrogen group 2 was 73. 3% , 96. 7% ,30. 3% , 40. 0% and 83. 3% , respectively, with the difference being not significant between control group and high estrogen group 2, and between low estrogen group 1 and high estrogen group 2 (P ＞ 0. 05 ) , but with the difference being significant among the other groups (P ＜ 0. 05 ). There was significant difference in the average latent period of breast cancer among all groups (P ＞ 0. 05 ). There was significant difference in the number of TEB between low-estrogen group 1 and other groups (P ＜ 0.05). There was significant difference in the erbB-2 expression among the groups ( P ＞ 0. 05 ). There was no significant difference in the expression of breast ER and PR between control group and other groups ( P ＞ 0. 05 ). The PCNA expression in breast tumor tissue in low-estrogen group 1 was significantly higher than other groups (P ＜0. 05) , and there was significant difference in the PCNA expression between control group and high estrogen group 2, between low estrogen group 1 and high estrogen group 2 (P ＜ 0. 05). Conclusion The soybean isoflavones at different estrogen environments play different roles in the occurrence and development of MMTV-erbb-2 transgenic mouse mammary tumor. In the context of low estrogen, soybean isoflavones could even promote breast cancer formation and development. In the context of high estrogen, soybean isoflavones could inhibit breast cancer and development.     

大豆异黄酮在低雌激素环境下对MMTV-erbB-2转基因小鼠的作用

目的探讨大豆异黄酮在低雌激素环境下对MMTV-erbB-2转基因小鼠乳腺肿瘤发生、发展的影响。方法 MMTV-erbB-2转基因雌性小鼠90只,分为3组,每组30只。60只行卵巢摘除术使MMTV-erbB-2转基因小鼠体内形成低雌激素环境,分别使用含大豆异黄酮饲料(大豆异黄酮组)和普通饲料(普通饲料组)喂养。另30只为对照组,用普通饲料喂养。观察乳腺肿瘤的潜伏期及发生情况,用免疫组织化学法观察各组乳腺组织的雌激素受体、孕激素受体、增殖细胞核抗原的表达情况。结果大豆异黄酮组肿瘤潜伏期较其他2组明显缩短,增殖细胞核抗原表达水平较其他2组高(P<0.05)。3组雌激素受体、孕激素受体表达情况比较差异无统计学意义(P>0.05)。结论在低雌激素环境下,大豆异黄酮对MMTV-erbB-2转基因小鼠乳腺肿瘤的发生、发展起促进作用。     

NIS蛋白在三阴性乳腺癌中的表达

目的 研究钠碘同向转运体(NIS)在三阴性乳腺癌中的表达,并探讨其在术后131I治疗效果预测方面的临床应用价值.方法 随机挑选三阴性乳腺癌(TNBC)30例作为实验组,同时随机挑选30例非三阴性乳腺癌(non-TNBC)和上述三阴性乳腺癌的癌旁组织30例作为对照组,应用免疫组化SP法检测NIS蛋白在非三阴性乳腺癌、三阴性乳腺癌及其癌旁组织中的表达,并比较表达差异.结果 NIS蛋白在non-TNBC组、TNBC组及癌旁组织的阳性表达率分别为73.3% (22/30)、66.7% (20/30)、6.7% (2/30),NIS在TNBC组和non-TNBC组表达差异无统计学意义(P>0.05),TNBC组和癌旁组织组比较差异显著(P<0.05),non-TNBC组和癌旁组织组比较差异显著(P<0.05).结论 NIS在三阴性乳腺癌中强表达,提示NIS介导的131I治疗三阴性乳腺癌有广阔的临床应用前景.     

枸盐酸莫沙必利分散片对美施康定治疗癌痛导致便秘的干预研究

目的前瞻性探讨枸橼酸莫沙比利分散片（新络纳）对美施康定治疗癌痛导致便秘的预防作用。方法60例重度癌痛患者接受美施康定止痛治疗,随机分为治疗组和对照组各30例,治疗组在接受美施康定止痛治疗同时给予新络纳片,5mg／次,3次／d,餐前15～30min口服。详细观察两组便秘发生情况,并对症处理。结果便秘发生率治疗组为13．3％（4／30）,对照组为73．3％（22／30）,两组对比,统计学处理有显著差异（P〈0．01）。结论新络纳对美施康定治疗癌痛导致的便秘有明显的干预作用。     

大豆异黄酮在不同的雌激素环境下对MMTV-erbB-2转基因小鼠的作用

Objective To investigate the effect of the soybean isoflavones at different estrogen environments on the pathogenesis of breast cancer in MMTV-erbB-2 transgenic mice. Methods 150 fiveweek-old MMTV-erbB-2 transgenic female mice were phosen and divided into five groups; control group,low estrogen group 1, low estrogen group 2, high estrogen group 1 and high estrogen group 2. The incidence and latent period of breast cancer were observed, and the expression of estrogen receptor (ER) ,progesterone receptor (PR), and proliferating cell nuclear antigen (PCNA) proteins was detected by using immunohistochemistry SP method. Results The incidence of breast cancer in control group, low estrogen group 1, low estrogen group 2, high estrogen group 1 and high estrogen group 2 was 73. 3% , 96. 7% ,30. 3% , 40. 0% and 83. 3% , respectively, with the difference being not significant between control group and high estrogen group 2, and between low estrogen group 1 and high estrogen group 2 (P ＞ 0. 05 ) , but with the difference being significant among the other groups (P ＜ 0. 05 ). There was significant difference in the average latent period of breast cancer among all groups (P ＞ 0. 05 ). There was significant difference in the number of TEB between low-estrogen group 1 and other groups (P ＜ 0.05). There was significant difference in the erbB-2 expression among the groups ( P ＞ 0. 05 ). There was no significant difference in the expression of breast ER and PR between control group and other groups ( P ＞ 0. 05 ). The PCNA expression in breast tumor tissue in low-estrogen group 1 was significantly higher than other groups (P ＜0. 05) , and there was significant difference in the PCNA expression between control group and high estrogen group 2, between low estrogen group 1 and high estrogen group 2 (P ＜ 0. 05). Conclusion The soybean isoflavones at different estrogen environments play different roles in the occurrence and development of MMTV-erbb-2 transgenic mouse mammary tumor. In the context of low estrogen, soybean isoflavones could even promote breast cancer formation and development. In the context of high estrogen, soybean isoflavones could inhibit breast cancer and development.     

大豆异黄酮在不同的雌激素环境下对MMTV-erbB-2转基因小鼠的作用

Objective To investigate the effect of the soybean isoflavones at different estrogen environments on the pathogenesis of breast cancer in MMTV-erbB-2 transgenic mice. Methods 150 fiveweek-old MMTV-erbB-2 transgenic female mice were phosen and divided into five groups; control group,low estrogen group 1, low estrogen group 2, high estrogen group 1 and high estrogen group 2. The incidence and latent period of breast cancer were observed, and the expression of estrogen receptor (ER) ,progesterone receptor (PR), and proliferating cell nuclear antigen (PCNA) proteins was detected by using immunohistochemistry SP method. Results The incidence of breast cancer in control group, low estrogen group 1, low estrogen group 2, high estrogen group 1 and high estrogen group 2 was 73. 3% , 96. 7% ,30. 3% , 40. 0% and 83. 3% , respectively, with the difference being not significant between control group and high estrogen group 2, and between low estrogen group 1 and high estrogen group 2 (P ＞ 0. 05 ) , but with the difference being significant among the other groups (P ＜ 0. 05 ). There was significant difference in the average latent period of breast cancer among all groups (P ＞ 0. 05 ). There was significant difference in the number of TEB between low-estrogen group 1 and other groups (P ＜ 0.05). There was significant difference in the erbB-2 expression among the groups ( P ＞ 0. 05 ). There was no significant difference in the expression of breast ER and PR between control group and other groups ( P ＞ 0. 05 ). The PCNA expression in breast tumor tissue in low-estrogen group 1 was significantly higher than other groups (P ＜0. 05) , and there was significant difference in the PCNA expression between control group and high estrogen group 2, between low estrogen group 1 and high estrogen group 2 (P ＜ 0. 05). Conclusion The soybean isoflavones at different estrogen environments play different roles in the occurrence and development of MMTV-erbb-2 transgenic mouse mammary tumor. In the context of low estrogen, soybean isoflavones could even promote breast cancer formation and development. In the context of high estrogen, soybean isoflavones could inhibit breast cancer and development.     

p57kip2在贲门癌中的表达及意义

目的探讨p57kip2蛋白在贲门癌组织中的表达及其临床意义。方法采用免疫组织化学SP方法检测60例贲门癌和20例正常贲门组织(对照组)中p57kip2的表达情况,分析其与临床病理参数的关系。结果贲门癌组织中p57kip2蛋白表达率为43.4%(26/60),明显低于正常贲门黏膜中的表达率90%(18/20)(P<0.01);p57kip2的表达在不同临床分期及不同分化程度上差异有统计学意义(P<0.05),在有无淋巴结转移上差异无统计学意义(P>0.05)。结论 p57kip2参与贲门癌的发生、发展,可作为判定贲门癌恶性程度的重要生物学指标,可能在贲门癌的侵袭和转移过程中起重要作用。     

桥小脑角区表皮样囊肿的MRI分型诊断

目的：分析桥小脑角区表皮样囊肿的MRI表现并对其生长和蔓延方式进行分型诊断。方法：收集我院经手术病理证实的表皮样囊肿19例MRI检查。结果：19例桥小脑角区表皮样囊肿呈多种生长蔓延方式：脑池内塑型生长型、局限性生长型、鞍上蔓延型、鞍旁蔓延型、骑跨型。结论：桥小脑角区表皮样囊肿的MRI分型诊断与临床症状间有密切的联系，有助于鏊别诊断和指导手术治疗。     

恶性肿瘤化疗后致粒细胞缺乏32例疗效分析

目的探讨恶性肿瘤化疗致粒细胞缺乏的处理措施及疗效。方法 32例恶性肿瘤患者常规剂量化疗,确定粒细胞缺乏后,立即采取消毒隔离措施,给予重组人粒细胞集落刺激因子(rhG-CSF)直至粒细胞升至正常范围。常规应用免疫调节剂。发热患者常规使用第3代头孢菌素,根据病原学检测及药敏试验结果调整治疗。合并贫血(血红蛋白<80 g/L)者输注去白红细胞悬液,食欲差者给予静脉营养支持等。结果 32例患者经综合治疗,29例恢复正常,恢复时间为4～15 d,平均为8 d,有效率为90.6%(29/32),3例患者因原发病未控及感染等原因死亡,病死率为9.4%(3/32)。15例发生感染,感染率为43.8%(14/32)。结论恶性肿瘤化疗致粒细胞缺乏,感染发生率较高,应用rhG-CSF疗效确切,综合治疗可降低病死率。     

视黄酸联合达那唑辅助治疗难治性血小板减少症1例

该文报告难治性血小板减少症1例.患者先后在多家三甲医院治疗,均诊断为原发性血小板减少症,先后接受输注血小板、血小板生成素(TPO)、甲强龙、丙种球蛋白、达那唑等药物治疗,血小板均可恢复正常;但当糖皮质激素逐渐规律减量至30 mg时血小板又迅速、严重降低.2年前至某医院治疗,在TPO及地塞米松治疗基础上给予视黄酸、达那唑...