表柔比星壳聚糖隐形纳米粒的制备及其抗肿瘤活性的检测

目的 制备包裹抗癌药物表柔比星（EPI）的"隐形"壳聚糖纳米粒,并检测其抗肿瘤活性。方法 应用阴离子凝聚法制备负载EPI的PEG化壳聚糖纳米粒（PEG/CS-EPI NPs）和普通壳聚糖纳米粒(CS-EPI NPs),通过透射电镜和动态光散射方法表征粒子的形貌和尺寸分布,用MTT法测定鼻咽癌细胞的增殖抑制率;并通过尾静脉注射给药法对荷小鼠肉瘤细胞S-180小鼠进行体内抑瘤试验。结果 PEG/CS-EPI NPs呈圆形或椭圆形,平均粒径322nm,载药量为13%,包封率74%,抑制细胞增殖具有浓度和时间依赖性,与普通壳聚糖纳米粒相比,隐形纳米粒的体内抗肿瘤作用更明显。结论 隐形壳聚糖纳米粒较普通壳聚糖纳米粒更适合用于制备化疗药物载体。     

载表柔比星的壳聚糖纳米粒的制备及其特性研究

目的 制备经聚乙二醇修饰的壳聚糖纳米粒(PEG/CS NP),并负载表柔比星(EPI),研究载表柔比星的壳聚糖纳米粒(PEG/CS-EPI NP)体外释药性能.方法 应用阴离子凝聚法制备PEG/CS-EPI NP,透射电镜观察纳米粒的形态特征,激光粒度分析仪测定粒径大小,紫外分光光度法测定纳米粒的载EPI量,动态透析法考察载EPI纳米粒的体外释放特性.结果 当壳聚糖与三聚磷酸钠质量比为6∶1,壳聚糖与EPI质量比为8∶1时,制备的PEG/CS-EPI NP呈圆形或椭圆形,分散性良好,平均粒径(322.1±14.4)nm,载EPI量为(13.9±1.1)%,包封率(74.2±1.8)%,72 h累积释药率达(82.0±2.1)%.结论 采用阴离子凝聚法制备的PEG/CS-EPI NP形状规则、粒度分布均匀,具有较高包封率和较好缓释性能.     

铁碳纳米粒介导顺铂对喉癌细胞敏感性的研究*

背景：应用纳米技术对化疗药物进行靶向性改进是增加肿瘤对化疗药物敏感性的有效手段之一。 目的：观察铁碳纳米粒搭载顺铂对喉癌Hep-2细胞的抑制作用及对细胞Caspase 3,Survivin mRNA表达的影响。 方法：分别应用铁碳纳米粒和(或)顺铂的生理盐水分散液干预喉癌Hep-2细胞,以生理盐水干预的细胞作为对照。 结果与结论：MTT检测结果显示,顺铂可明显抑制Hep-2细胞的生长,与铁碳纳米粒联合应用对Hep-2细胞的抑制作用更强;表现为细胞生长不贴壁,增殖缓慢,出现凋亡征象。RT-PCR结果显示,共培养5 d,铁碳纳米粒和顺铂联合及顺铂单独处理的Hep-2细胞Caspase 3 mRNA水平明显增高,而Survivin mRNA水平明显降低,以铁碳纳米粒和顺铂联合作用效果更明显,而单独应用铁碳纳米粒对Hep-2细胞无影响。提示铁碳纳米粒搭载顺铂能够增加喉癌Hep-2细胞对顺铂的敏感性,提高药物化疗效果。 关键词：铁碳纳米粒;顺铂;喉癌;Hep-2细胞;化疗;敏感性;Caspase3;Survivin doi:10.3969/j.issn.1673-8225.2012.12.010     

阿霉素纳米微粒经动脉给药对兔肝肿瘤的疗效观察

目的 观察阿霉素纳米微粒经动脉给药对免肝肿瘤的疗效.方法 将阿霉素纳米微粒(小粒径脂质体与毫微粒)与碘油制成乳剂,建立兔肝VX-2移植癌改良模型并随机分为六组,经肝动脉分别注入生理盐水(NS)、碘油(Lipi)、游离丝裂霉素(ADM,2mg/kg)、游离阿霉素加空白纳米微粒(ADM+NP,2mg/kg)、阿霉素纳米微粒组(NADM,2mg/kg)与阿霉素纳米微粒-碘油乳剂(Lip-NADM,2mg/kg).结果 经Lip-NADM治疗的兔生存期显著延长(P<0.01),与其它各组相比对肿瘤生长的抑制更为明显(P<0.01),肿瘤坏死更广泛,更彻底.结论 与其它各组相比,Lip-NADM经动脉给药具有更好的疗效.     

磁性阿霉素纳米微球的制备及在高频磁场中的发热研究

制备一种在高频磁场中能感应发热的用于治疗肿瘤的阿霉素纳米微球，研究其在磁场中的热效应。用超声搅拌冷冻干燥的方法制备药物微球，平均粒径200nm左右。电镜观察其形态为球囊状。将其置于不同介质中于高频磁场中测其温度变化值，实验表明该微球在交变磁场中使介质升温。升温速度与平稳时的温度和微球的量及磁场强度成正比，介质流动性好，升温快。     

纳米碳示踪技术与超声造影术对甲状腺癌手术患者近期结局的影响

目的:比较纳米碳示踪技术与超声造影术对甲状腺癌手术患者近期结局的影响。方法:选择我院2019年9月至2020年9月间收治的80例甲状腺癌手术患者,随机分为对照组和试验组,各40例。所有患者均采取甲状腺癌手术治疗,对照组术中采用纳米碳淋巴结示踪技术进行辅助,试验组术中采用超声造影术辅助。比较两组手术时间、术中出血量、术后...     

纳米铁核素靶向治疗肿瘤的辐射效应研究

目的:综合考察纳米铁核素(59Fe)的照射剂量率和照射时间对杀死肿瘤细胞的影响,为低剂量率的β粒子放射性核素靶向疗法提供指导。方法:采用的三个肿瘤细胞系为:SKBR-3乳腺癌、U-118MG神经胶质瘤和A-431宫颈癌;实验模型为:在每一个样品中取103个肿瘤细胞,用低剂量率的β粒子照射;初始剂量率为:0.1 Gy/h～0.8 Gy/h;持续照射时间为:1天、3天或者7天。结果:分别用0.2 Gy/h～0.3 Gy/h和0.4 Gy/h～0.6 Gy/h的剂量率连续照射肿瘤细胞7天和3天,能够将所有肿瘤细胞样品中的细胞杀死。细胞的总辐射剂量为30 Gy～40 Gy。而用0.8 Gy/h的剂量率照射24小时后,仅SKBR-3细胞被杀死,其它肿瘤细胞系的所有细胞都能自动修复。结论:在低剂量率的β粒子放射性核素靶向疗法中,该实验结果为照射剂量率和照射时间的确定提供了指导。     

顺磁纳米铁核素治疗的放射性剂量率比较研究

目的:探讨放射源顺磁纳米铁核素(PNINs)肿瘤内照射治疗时,源的分布状态对疗效产生的影响。方法:对放射源PNINs在被外磁场靶向在肿瘤区域以均匀状态分布和直接瘤内注射以点源状态分布在肿瘤中心处时,两种不同分布状态的剂量率进行比较研究。结果:采取瘤内注射的方法使得PNINs以点源的形式作用在肿瘤中心的方式其最大作用距离为0.53 cm,其有效杀伤距离还会小于0.53 cm;若肿瘤若肿瘤半径大于0.53 cm则应该考虑采取用外磁场靶向的方法使得PNINs以平均分布于肿瘤整个区域的方式来获得较好的疗效。结论:其比较结果为PNINs的临床运用提供有益的理论参考。     

无机纳米粒子掺杂生物活性碳纳米纤维的制备及性能评价

背景：已有研究表明向生物惰性碳纳米纤维中引入具有成骨活性的β-磷酸三钙纳米粒子,可显著提高碳纳米纤维的生物活性,而某些二价离子掺杂的β-磷酸三钙也被报道能够促进新骨的生成。 目的：考察适量锌离子、镁离子的引入对β-磷酸三钙@碳纳米纤维材料形貌及成骨活性的影响。 方法：以聚丙烯腈、磷酸三乙酯、硝酸钙、硝酸锌、硝酸镁等为原料,采用溶胶-凝胶、静电纺丝与原位烧结碳化相结合的方法制备锌或镁离子掺杂的β-磷酸三钙@碳纳米纤维材料。将所得复合纳米纤维材料及未掺杂锌或镁离子掺杂的β-磷酸三钙@碳纳米纤维与成骨细胞MC3T3-E1体外共培养,观察细胞的黏附、增殖和形态变化。 结果与结论：β-磷酸三钙@碳纳米纤维形貌均匀,表面可见直径为数十纳米的无机粒子均匀分布,锌或镁离子的引入对纤维形貌无明显影响;复合纤维主要由碳元素组成,钙、锌、镁元素等均匀分布于纤维中,且各元素相对含量与投料比相符。与未掺杂锌或镁离子的β-磷酸三钙@碳纳米纤维相比,MC3T3-E1成骨细胞更易在锌或镁离子掺杂的β-磷酸三钙@碳纳米纤维材料表面黏附,细胞增殖和铺展状态也更好。表明在β-磷酸三钙@碳纳米纤维的基础上,引入锌或镁离子掺杂,能进一步提高材料的细胞相容性及生物活性。     

阿霉素联合塞来昔布诱导胃癌细胞凋亡的作用研究

目的:研究环氧化酶-2 (COX-2) 抑制剂塞来昔布联合阿霉素对胃癌MGC-803细胞株的凋亡诱导作用，并探讨其相互作用的可能的分子机制。方法:用MTT法检测MGC-803的增殖情况。用荧光显微镜、流式细胞术和DNA梯度电泳检测肿瘤细胞凋亡的情况。结果:随着阿霉素剂量的增加，MGC-803细胞的数量明显减少。细胞大部分静止于G₀/G₁期，S期细胞明显减少。 阿霉素（5 mg/L）联合塞来昔布（25 μmol/L）明显抑制MGC-803细胞的生长。肿瘤细胞经阿霉素或塞来昔布处理后荧光显微镜下可观察到典型的细胞凋亡形态变化。与两者单独用药相比，联合用药后的DNA梯度变化更为明显。联合用药 48 h 后MGC-803细胞堆积在G₀/G₁，而S期减少的细胞数量比两者分别用药时更为显著。结论：塞来昔布和阿霉素具有协调的诱导凋亡的作用，这对于将COX-2抑制剂用于肿瘤的临床辅助化疗具有重要意义。     

促性腺激素释放激素类似物对乳腺癌细胞株化疗敏感性的影响

目的： 探讨促性腺激素释放激素类似物（GnRHa）对乳腺癌细胞株（MCF-7和MDA-MB-231）化疗敏感性的影响。方法：不同浓度的GnRHa（曲普瑞林,triptorelin）（10^－9 mol/L、10^－8 mol/L、10^－7 mol/L、10^－6 mol/L、10－5 mol/L）分别作用于MCF-7和MDA-MB-231细胞24 h、96 h和168 h后，用CCK-8方法检测细胞活性。用或不用GnRHa（10^－5 mol/L）处理96 h后，分别加入5-氟尿嘧啶（5-FU）或表阿霉素(EPI)作用24 h，用CCK-8法检测细胞抑制率。用RT-PCR检测GnRHa（10^－5 mol/L）作用168 h后GnRH受体、PCNA和MDR1 mRNA表达水平。结果：不同浓度GnRHa作用不同的时间后对乳腺癌细胞活性无影响。GnRHa（10^－5 mol/L）作用96 h后，5－FU和EPI对两种细胞的IC50不改变；GnRHa（10^－5 mol/L）不影响5－FU（MCF-7细胞0.5 g/L，MDA－MB－231细胞0.5 g/L）和EPI（MCF-7细胞1.2 mg/L,MDA－MB－231细胞0.8 mg/L）对两种细胞的抑制作用（P>0.05）。GnRHa（10^－5 mol/L）作用168 h后，MCF-7细胞的PCNA mRNA表达无改变。而在MDA-MB-231细胞，PCNA表达升高，差别有统计学意义（P<0.05）。在MCF-7对照组中，MDR1 mRNA有弱表达。GnRHa作用后，抑制了MDR1 mRNA表达。MDA-MB-231细胞GnRHa作用前后， MDR1 mRNA均无表达。结论：GnRHa不影响乳腺癌细胞株对5-FU和EPI的敏感性。GnRHa可能通过下调MDR1 mRNA表达水平，减弱MCF-7细胞的耐药性。     

人肝细胞离线混合生物人工肝支持系统的构建与实验研究

目的 构建人肝细胞离线混合生物人工肝支持系统,探讨其治疗肝衰竭患者离体血浆的可行性,为开展离线生物人工肝治疗肝衰竭患者奠定基础.方法 采用转染人肝再生增强因子（hALR）基因的Hep G2细胞为生物材料,将细胞培养于费森尤斯血浆滤过器（Psu-2S）中,构建生物反应器.利用慢性乙型病毒性肝炎基础上发生的慢加急性肝衰竭患者血浆置换后离体血浆作为治疗对象,先行2h血浆胆红素吸附治疗,然后应用构建的生物人工肝系统对其进行实验性治疗.结果 生物反应器建立过程顺利,无菌技术达到要求,细胞培养液离心检测未见细胞漏出,生物反应器外腔液中细胞活力平均达95.6%,细胞增殖旺盛.肝衰竭患者血浆在胆红素吸附治疗前后分别为（176.19±54.14）μmol/L,（50.10±16.85）μmol/L,差异有统计学意义（t=8.32,P=0.0002）,白蛋白、尿素氮、血糖等指标在胆红素吸附前后差异无统计学意义.血浆在生物人工肝治疗前后,胆红素分别为（50.10±16.85）μmoL/L,（30.27±15.02）μmol/L,差异有统计学意义（t=13.19,P=0.000）;同时尿素氮（UERA）明显升高（t=15.4,P=0.000）;血糖（GLU）明显降低（t=5.67,P=0.0013）;白蛋白治疗前后分别为（6.13±2.04）g/L及（7.19±2.42）g/L,差异无统计学意义（t=1.73,P=0.134）.结论 自行构建的混合生物人工肝支持系统细胞繁殖活性良好,对慢加急性肝衰竭患者血浆胆红素有较好的吸附及代谢作用并具有一定的蛋白合成功能.     

口虾蛄乙酸乙酯提取物联合阿霉素或顺铂对人肝癌HepG2细胞的增殖抑制效应研究

目的研究海洋生物口虾蛄乙酸乙酯提取物联合阿霉素或顺铂对人肝癌 HepG2细胞株的增殖抑制效应,并定量分析其协同、相加或拮抗的作用。
　　方法不同浓度的口虾蛄乙酸乙酯提取物联合阿霉素或顺铂处理肝癌 HepG2细胞株24 h,用 MTT 法测定细胞的生长抑制作用,并用中效原理法、金氏修正公式分析药物的联合作用。
　　结果口虾蛄乙酸乙酯提取物、阿霉素、顺铂单用或联合用药作用于肝癌 HepG2细胞株,均能抑制细胞的增殖,呈现量-效依赖性。口虾蛄乙酸乙酯提取物与传统化疗药物的联合用药增加了传统化疗药物对肝癌细胞的毒性作用,呈现出低浓度拮抗,而高浓度协同的作用。
　　结论海洋生物口虾蛄乙酸乙酯提取物作为一类新型、天然的抗肿瘤药物,可有效地抑制肝癌 HepG2细胞的增殖。     

华蟾素对肝癌Bel-7402细胞放疗敏感性的影响及其作用机制的研究

目的 探讨华蟾素对肝癌Bel-7402细胞放疗敏感性的影响及其作用机制。方法 分别使用浓度为0.125、 0.250、 0.500、1.000 μg/mL华蟾素处理肝癌Bel-7402细胞24 h、48 h、72 h,噻唑蓝(MTT)法检测细胞增殖的影响,根据半数抑制浓度(IC₅₀)选择华蟾素浓度及作用时间。用0 μg/mL(对照组)和0.4 μg/mL华蟾素处理肝癌Bel-7402细胞,同时用剂量为0、2、4、6、8 Gy的6 MV X线进行照射,克隆形成实验检测细胞放疗敏感性。用IC₅₀为0.4 μg/mL华蟾素、6 Gy的X线分别单独或联合处理肝癌Bel-7402细胞,48 h后流式细胞仪检测细胞周期和细胞凋亡率;Western blot检测细胞中p50、p65、Bcl-2、cyclin D1蛋白表达情况。结果 华蟾素能够显著抑制肝癌Bel-7402细胞增殖,随着作用浓度的增加及作用时间的延长,细胞抑制率逐渐升高。华蟾素能够抑制经照射后的肝癌Bel-7402细胞克隆形成能力,细胞存活率显著低于对照组(P<0.05)。与对照组相比,华蟾素组、放疗组及联合组肝癌Bel-7402细胞G0/G1期细胞比例增多,S期细胞减少,细胞凋亡率升高,p50、p65、Bcl-2和cyclin D1蛋白表达降低,差异均有统计学意义(P值均＜0.05);联合组与华蟾素组和放疗组相比,细胞周期、细胞凋亡率及蛋白表达差异均有统计学意义(P值均<0.01)。结论 华蟾素能够增强肝癌Bel-7402细胞的放疗敏感性;其作用机制可能与华蟾素能够通过抑制核因子-κB信号通路及下调Bcl-2和cyclin D1蛋白表达,进而抑制细胞增殖、诱导细胞周期阻滞和细胞凋亡相关。     

A computer-assisted morphometric quantitative analysis of iron overload in liver biopsies. A comparison with histological and biochemical methods

The aim of this study was to evaluate a new method of image analysis used to quantify the iron load in routinely processed liver biopsies. Sixty-four liver biopsies from the same number of patients were studied. Both biochemical determination of iron concentration and histopathological semiquantification and quantification were performed. The latter was performed on Perls-stained liver sections by a semiautomatic system of image analysis that yields the percentage of stained liver tissue. In 43 samples with an hepatic iron content higher than 2000microg/mg of dry tissue, this morphometric index was compared to the liver iron load measured biochemically, showing a significant correlation (Spearman's test) between both variables (rho = 0.686, p<0.001). Moreover, there is a better correlation when the semiquantitative Deugnier's histological index is compared with the biochemical method (rho = 0.425, p<0.004). Thus, we conclude that image analysis may be a valid method to assess hepatic iron storage in patients with liver diseases and that it may be more accurate than semiquantitative grading systems, such as the one described by Deugnier, since the morphometric method shows a closer correlation with the hepatic iron concentration determined biochemically.     

Effects of selenium on histopathological and enzymatic changes in experimental liver injury of rats

The most important antioxidant aspect of selenium is its function in the active site of selenoenzyme glutathione peroxidase. Glutathione peroxidase not only allows the removal of the toxic radicals but also permits the regeneration of lipid molecules through reacylation in the cellular membrane. Thus, GSHPx may prevent the harmful effects of free radicals and may reduce the formation of the reactive metabolites of carbon tetrachloride. Carbon tetrachloride is a hepatotoxic agent which generates haloalkane radicals during its biotransformation in the liver and is widely used to make the experimental model of hepatic damage. Therefore, the aim of the present study is to investigate the possible protective role of selenium on the experimental liver cirrhosis and some enzyme activities in blood plasma from rats. While the activities of aspartate aminotransferase (AST), alanine aminotransferase (ALT) and alkaline phosphatase (ALP) were significantly increased (p < 0.05, p < 0.05 and p < 0.01, respectively), gamma-glutamyle transferase (GGT) activity was not statistically affected (p < 0.05) with carbon tetrachloride-injection. The levels of AST, ALT and GGT in carbon tetrachloride-group decreased to nearly the enzyme values in control-group after the selenium-injection but the ALP was increased (p<0.01). On the other hand, it was noticed that selenium significantly decreased the hepatic injury. In conclusion, our results showed that carbon tetrachloride caused an increase in the activities of liver enzymes in plasma and selenium application decreased the hepatic injury. Plasma levels of the liver enzymes were decreased after selenium-injections. Based upon these results, selenium may play an important role in the preventive indication of hepatic cellular injury inducted by carbon tetrachloride.     

The effects of grape seed and colchicine on carbon tetrachloride induced hepatic damage in rats

This study aims to determine the effects of grape seed and colchicine on carbon tetrachloride (CCl₄) induced hepatic damage and on some serum biochemical parameters. Sixty male Wistar albino rats (200–250 g) were randomly divided into six groups (ten rats/group) and included the control group the group were given isotonic sodium chloride (1 mL/kg b.w) intraperitonealy (i.p.), group 2 the group treated i.p. injection of CCl₄ (1.0 mL/kg b.w) in corn oil twice in the first week, Groups 3 and 4 injected with CCl₄ as described for group 2 and the rats were orally given (100 mg/kg b.w) GSE and i.p. injected (10 μg/rat) with colchicine for four weeks, respectively and groups 5 and 6 were the grape seed and colchicine control groups in which rats were orally given grape seed (100 mg/kg b.w) and i.p. injected with colchicine (10 μg/rat), respectively. Anorexia, weight loss, motionlessness and hepatic colour variation at necropsy were observed in groups 2, 3, and 4. Hyperemia, focal bleeding, fat degeneration, changes ranging from degenerative to necrotic, increase in connective tissue elements, pronounced in portal sites in particular, and infiltration of lymphoid series cell observed in the livers of the rats in group 2, treated with CCl₄. Histological hepatic changes in the rats in group 3 and 4 were similar to those in group 2. The levels of serum total protein, albumin and globulin decreased in groups 2, 3, and 4, compared with groups 1, 5 and 6; aspartate transaminase (ALT) activities increased. The lowest alkaline phosphatase (ALP) activities were in groups 4 and 5. We concluded that GSE and colchicine have not sufficient ameliorative effects to CCl₄ induced acute hepatic damage.     

人肝细胞离线混合生物人工肝支持系统的构建与实验研究

Objective To construct an off-line hybrid bioartificial liver supporting system with human liver cell line,and study it's effect on the plasma from patients with liver failure.Methods We established the bioreactor using Psu-2s(Fresenius)cultured with Hep G2 cell transfected with human augmenter of liver regeneration (hALR) gene,then constructed a hybrid bioartificial liver supporting system,at last using the bioartificial liver support system to purify the plasma treated 2 hours with serum bilirubin absorbent,separated from acute on chronic liver failure patients infected by hepatitis B virus.Results Bioreactor was successful constructed.The cell viability in perigastrum of bioreactor is 85.2% and cell propagated rapidly.Before and after treating with bilirubin absorbent,serum total bilirubin was(176.19 ±54.14)μmol/L and(50.1±1 6.85)μmol/L respectively(P=0.0002).While there were no signifcance difference in the level of albumin.urea and glucose.At the begin and end of treatment with bioartificial liver,serum total bilirubin was(50.10±16.85)μmol/L and(30.27±15.02)μmol/L respectively(P=0.000),the urea and albumin increased,urea has significantly difference,but the change of albumin hasn't.Conclusion The off-line hybrid bioartificial liver supporting system with human liver cell line were builded successfully and have synthesis and metabolism functions for acute on chronic liver failure patients.     

人肝细胞离线混合生物人工肝支持系统的构建与实验研究

Objective To construct an off-line hybrid bioartificial liver supporting system with human liver cell line,and study it's effect on the plasma from patients with liver failure.Methods We established the bioreactor using Psu-2s(Fresenius)cultured with Hep G2 cell transfected with human augmenter of liver regeneration (hALR) gene,then constructed a hybrid bioartificial liver supporting system,at last using the bioartificial liver support system to purify the plasma treated 2 hours with serum bilirubin absorbent,separated from acute on chronic liver failure patients infected by hepatitis B virus.Results Bioreactor was successful constructed.The cell viability in perigastrum of bioreactor is 85.2% and cell propagated rapidly.Before and after treating with bilirubin absorbent,serum total bilirubin was(176.19 ±54.14)μmol/L and(50.1±1 6.85)μmol/L respectively(P=0.0002).While there were no signifcance difference in the level of albumin.urea and glucose.At the begin and end of treatment with bioartificial liver,serum total bilirubin was(50.10±16.85)μmol/L and(30.27±15.02)μmol/L respectively(P=0.000),the urea and albumin increased,urea has significantly difference,but the change of albumin hasn't.Conclusion The off-line hybrid bioartificial liver supporting system with human liver cell line were builded successfully and have synthesis and metabolism functions for acute on chronic liver failure patients.     

CAS基因在原发性肝癌组织中的表达及其与HBV感染的关系

目的 探讨细胞凋亡易感基因(CAS)可否作为肝癌的病理诊断标志物,以及肝细胞癌中CAS蛋白的表达与HBV感染之间的关系.方法 应用免疫组化法检测肝癌、癌旁组织及未发生肿瘤的肝硬化、肝炎组织中CAS蛋白的表达情况,同时应用免疫组化法、核酸原位杂交法检测HBV感染的肝细胞癌组织、癌旁组织中HBsAg、HBcAg以及HBV DNA的表达情况,分析肝细胞癌中CAS蛋白的表达与HBV感染之间的关系.结果 CAS蛋白在肝癌组织中的表达较癌旁组织明显升高(P＜0.01),而癌旁组织中CAS蛋白表达较未发生肿瘤的肝硬化、肝炎组织显著增强(P＜0.01).低分化型肿瘤细胞的CAS蛋白表达明显高于中分化型和高分化型(P＜0.01).CAS蛋白在HBV感染的肝细胞癌组织中的表达明显高于非HBV感染的癌组织(P＜0.01),其中HBV DNA阳性的肝细胞癌组织中CAS蛋白表达水平显著高于HBV DNA阴性的肝细胞癌组织(P＜0.05).结论 CAS蛋白在肝细胞癌组织中呈高表达,肝细胞癌分化愈低其表达愈强,表明CAS蛋白可作为肝细胞癌的病理诊断与分化程度的评价标志物.并推测HBV DNA可能通过上调CAS的表达,在HBV感染相关性肝癌的发生发展过程中发挥重要的作用.