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腹腔冲洗化疗对人卵巢上皮癌细胞株裸鼠腹腔荷瘤疗效的形态学观察
http://www.100md.com 山东医科大学学报 2000年第1期第38卷 论著
     作者:穆玉兰1 汤春生 马宪敏2 王美清

    单位:1山东省立医院妇产科 2济南市妇幼保健院妇产科 3山东医科大学病理教研室

    关键词:卵巢肿瘤;小鼠;裸;药物疗法;腹腔;病理;临床

    山东医科大学000104 摘 要:研究持续腹腔冲洗化疗对裸小鼠人卵巢上皮癌腹腔荷瘤模型的疗效及其副作用。方法:用卵巢浆液性囊腺癌细胞株Skov3和裸小鼠建立腹腔荷瘤模型,分对照组、常规CDDP腹腔化疗组(常规组)和CDDP腹腔持续冲洗化疗组(冲洗组)进行观察。于移瘤后3w开始治疗,间隔4d,共2个疗程。结果:冲洗组动物的体重在治疗后虽有所下降,但远未达到毒性反应的程度,与常规组相比,无显著差异。冲洗组腹腔瘤的体积明显小于常规组,抑瘤率和细胞凋亡率明显增高,差异十分显著。病理组织学和超微病理学检查也显示,腹腔冲洗化疗效果优于常规化疗,对肾脏也没有大的病理损伤。结论:对裸小鼠腹腔荷瘤,持续腹腔冲洗化疗较常规腹腔化疗疗效显著,无明显的毒副作用。
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    分类号:R737.31;R730.53 文献标识码:A

    文章编号:1000-0496(2000)01-0010-03

    MORPHOLOGICAL OBSERVATIONS IN THERAPEUTIC EFFECT OF THE INTRAPERITONEAL CONTINUAL WASHING CHEMOTHERAPY ON HUMAN OVARIAN EPITHELIAL CANCER IN NUDE MICE

    MU Yu-lan ,TANG Chun-sheng ,MA Xian-min

    (Dept. of Obsterics &. Gynecology, Shandong Provicial Hosipital)

    Abstract:To investigate whether intraperitoneal continual washing chemotherapy is more effective and its toxicity is not increased than the common therapy in treating tumor models of human ovarian epithelial cancer in the abdominal cavity of nude mice. Methods: Establishing the abdominal cavity tumor models in nude mice with cell line Skov3 of ovarian epithelial serous cancer. 20 experimental nude mice were divided into 3 groups: the control group(6 mice)(Gl), the common therapy group (7 mice)(G2) and the intraperitoneal continual washing chemotherapy group (7 mice)(G3). Treatment began three weeks after inoculating subcutaneous tumor transplantation into the cavity of mice for two courses at an interval of four days. Results:Though the weight of nude mice in G3 slighdy declined, there was no evidence of toxicity. Compared with G2, there was no significant difference. The size of tumor is obviously smaller than that in G2. Tumor inhibition rate and cell apoptosis rate were found significantly increased in G3. The therapeutic effect of G3 was better than that of G2 upon pathological and microscopic structure examination,and no more pathological injury to the kidneys was found. Conclusion: The therapeutic effect of intraperitoneal continual washing chemotherapy has better effect than the common therapy and without significant side-effect.
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    Keywords:Ovarian neoplasms; Mice, nude; Drug therapy; Peritoneal cavity; Pathology, clinical 腹腔化疗是晚期卵巢癌综合治疗中有效的治疗方法之一,为了探讨发挥腹腔化疗最佳效果的方法,本研究采用持续冲洗的方法对裸小鼠腹腔荷瘤模型进行腹腔化疗,以肿瘤病理的形态结构来判定该法的疗效及毒副作用。1材料和方法1.1裸鼠BALB/c,nu/nu裸小鼠,雌性,由中国药品生物制品检定所实验动物中心提供。鼠龄5~6w,体重18~20g,SPF(specific-pathogenfree)条件下饲养。1.2skov3细胞株来自人类卵巢浆液性囊腺癌,由美国MemorialSloanKetteringCancerCenter提供。1.3裸鼠腹腔瘤模型的建立将大量培养的skov3细胞用0.25%的胰蛋白酶消化,生理盐水洗2次,用7号针头注入裸鼠皮下,每只背部皮下接种4点,每点0.1ml,含量2.5×107个/ml,共接种5只,6w后形成直径lcm左右的皮下移植瘤。将皮下移植瘤取下,剪成直径为0.3cm大小的组织块,用20号针头注入20只裸鼠腹腔,每只注射0.3ml制成腹腔瘤模型,细胞计数1.5×108个/ml。腹腔注射后每天观察裸鼠腹部包块生长及消瘦情况,每周测量裸鼠体重。裸鼠腹腔瘤经病理学检查,证实为卵巢浆液性上皮癌(图1)。图1卵巢浆液性上皮癌肿瘤细胞,核质比例明显增大,核异型性明显,仍可见乳头状结构(X400)Fig.lTumorcelloftheovarianepithelialCancer,theratioofnucleus/cytoplasmawasobviouslyincrease,atypiaOfnucleuswasobvious,therewaspapillastructure(X400)1.4治疗方法将20只腹腔荷瘤裸鼠分为3组,即对照组(6只)、常规CDDP腹腔化疗组(常规组,7只)和CDDP腹腔持续冲洗化疗组(冲洗组,7只)。对照组一次性腹腔注射生理盐水2ml;常规组一次性腹腔注射CDDP生理盐水溶液2ml,CDDP8mg/kg;冲洗组是在荷瘤鼠的上、下腹部各插入-16号套管针,并缝合固定,然后以CDDP8mg/kg的生理盐水溶液30ml进行腹腔冲洗化疗,持续lh,冲洗后腹腔内保留2ml。上述3种治疗均于植瘤后第3周开始,共进行2次,间隔4d,在戊巴比妥钠腹腔麻醉下进行。1.5检测项目①观察各组裸鼠腹部包块情况;②治疗药物对裸鼠毒性的观察:每隔7d测量体重,末体重(FBW)/初体重(IBW)≥0.80为无毒性反应,FBW/IBW0.05)。2.3肿瘤生长情况与抑瘤率常规组和冲洗组在2个疗程后第2天和第3天各死亡1只,1只的腹腔内肿瘤为1.4cm×1.1cm×0.7cm,肠管缠绕其上;另1只瘤组织为1.0cm×O.9cm×O.9cm和O.8cm×0.5cm×0.3cm,并可见多个绿豆大小的种植结节。治疗结束后解剖小鼠,对照组中1只无肉眼可见的腹腔瘤组织,1只出现血性腹水,约1.8ml,皆有腹腔包块,瘤组织附着于大网膜、肠管、肾或附件上,有4只小鼠腹腔内有3个肿瘤包块。常规组皆出现腹腔肿瘤,皆未出现腹水。冲洗组中有1只未查见肉眼可见的肿瘤,也无明显的腹水。各组腹腔瘤的生长情况和治疗后肿瘤抑制率见表1和表2。2.4腹腔瘤组织的光镜和电镜观察2.4.1光镜对照组:瘤组织弥漫,坏死灶较少,癌细胞异型性明显,核分裂相多见,乳头状或腺管样结构少见,间质很少;冲洗组瘤组织稀疏或零星地散布在大片坏死区的周围(图2),仍可见细胞的异型性,但核分裂相少见,可见到较多的凋亡细胞和凋亡小体(图3),瘤组织内间质较少,偶尔可见乳头状或腺管样结构形成;常规组:瘤组织的镜下结构界于上述二者之间。各组凋亡细胞率的比较见表3。表13组腹腔瘤的生长情况表23组肿瘤抑制率比较(x±s)·P0.05vs对照组#P
    基金项目:山东省科委资助课题

    收稿日期:1999-09-14, http://www.100md.com(穆玉兰1 汤春生 马宪敏2 王美清)