Application of the three-dimensional visualization and 3D printing technology for the preoperative evaluation of retroperitoneal tumors

目的探讨三维重建及3D打印技术在腹膜后肿瘤术前评估中的应用价值。方法回顾性分析2011年3月至2015年9月厦门大学附属成功医院收治的50例腹膜; 后肿瘤病人的临床资料,应用人体器官三维建模软件将病人的CT二维图像重建成三维可视化图像,使用人体器官模型3D打印设备,用两色热塑性塑料打印实物模; 型,通过观察肿瘤与腹腔器官、腹部大血管之间的关系进行术前评估并制定手术方案。实施手术,术中比较重建结果与实际的区别。结果50例病人均成功完成三维; 重建,其中10例病人完成3D打印,三维重建结果及3D打印模型能够立体、清晰和实物化的显示肿瘤解剖学位置及与周围器官、血管的毗邻关系,与术中实际情; 况大致相符。50例病人均顺利施行手术,术中无死亡。结论三维重建及3D打印技术能够对腹膜后肿瘤术前进行精准评估,对指导手术具有一定的应用价值。Objective To explore the application value of three dimensional; visualization and 3D printing technology in the preoperative evaluation; of retroperitoneal tumors. Methods March 2011 to September 2015,the; clinical data of 50 cases of retroperitoneal tumor patients in Xiamen; University Affiliated successful hospital were retrospectively analyzed.; Xiamen strong science and technology R & D human organ 3D modeling; software will reconstruct 2D CT image visualization into a; three-dimensional visualization image,and then it can print physical; model with the company's XMQB-I human organ model 3D printing equipment; and white thermoplastic. At last,preoperative evaluation and surgical; plan can be made through the relationship between the tumor,organs in; abdominal cavity,and abdominal vascular. During the surgery,make a; comparison between the visualization results with the actual condition.; Results 50 cases of patients were successfully completed the; three-dimensional visualization,including 10 cases of patients; completed. Three-dimensional visualization and 3D printing model can; three-dimensionally,clearly show the adjacent relationship between the; anatomical tumour location and surrounding organs and blood; vessels,broadly in line with the actual surgery. 50 surgeries were; successfully performed,no death during perioperative period. Conclusion; Three dimensional visualization and 3D printing technology can make an; accurate preoperative evaluation of retroperitoneal tumors,which has a; certain application value for guiding surgery.国家自然科学基

Using Feedback Random Framework to Improve the Hore Sensor Displacement Measurement Range

霍尔器件可用于微位移测量,但实用时要设计复杂的磁路以保证在测量范围内为均匀梯度磁场。通常只能测1MM左右的位移,这限制了其应用范围。采用反馈随动机构带动霍尔传感器跟踪被测体的位移,从而大大扩大了位移的测量范围,且不需要在测量中保持均匀梯度磁场。Hore unit can be used to microdisplacement measurement.But it is necessary to design a complex magnetic route to ensure the even grad magnetic field within measuring field.Usually it can only measure about 1 mm displacement,which deeply restrict its application.In this paper a feedback random framework is used to drive Hore sensor to track the displacement of the measured object.This framework greately enlarges the measure range and it can also work in non-even grade magnetic field.福建省科技项目资助(2007H0036

Effects of curcumin on anti-proliferation and expression of apoptosis interrelated gene of Human Osteosarcoma MG-63 Cells

目的:探讨姜黄素对人成骨肉瘤Mg-63细胞增殖抑制及凋亡相关基因表达的影响。方法:用姜黄素处理Mg-63细胞,细胞计数法检测细胞增殖抑制的效果;荧光染色观察细胞的凋亡;流式细胞仪(fCM)进行细胞周期时相分析;免疫细胞化学法和WESTErn blOTTIng免疫法检测细胞凋亡相关基因的表达水平。结果:随着姜黄素浓度的增加及其作用时间延长,对细胞的增殖抑制作用增强,最高抑制率可达89.07%;光镜下可观察到细胞发生染色质浓缩,细胞核凝聚和碎裂等典型的凋亡形态学改变;fCM检测结果显示细胞经姜黄素处理后出现明显的凋亡峰;免疫反应结果显示,凋亡相关基因bCl-2和P53表达水平降低,而bAX和fAS表达水平升高。结论:姜黄素能显著抑制Mg-63细胞增殖并可有效诱导其凋亡,其作用机制可能与bCl-2和bAX二者的比值发生变化从而接受了凋亡刺激信号有关。Objective: To investigate the regulatory effect of curcumin on proliferation inhibition and apoptosis in human osterosarcoma MG-63 cells.Methods: MG-63 cells were treated by curcumin, and the inhibitory effect on cell proliferation was assessed by cell count.The apoptosis was inspected by fluorescent staining.The cell cycle analysis was detected by FCM.The expression level of genes related with apoptosis was observed by immunohistochemistry and western blotting immunoreaction.Results: The results showed that the cells growth was inhibited with the increasing of the concentration of curcumin and the elongation of the treated time,and the highest inhibition rate was 89.07%.Parts of cells presented the typical morphological changes of apoptosis: chromatin concerntrated and agglutinatied, cell nucleus shrinked and cataclased under the microscope.The results of FCM analysis showed that curcumin could in- duce cells into apoptosis, which was proved by the emergence of apoptotic peak.The results of immunoreaction suggested that the expression level of bcl-2 and P53 were down-regulated and the expression level of bax and Fas were upregulated.Conclusions: Curcumin not only inhibited cell proliferation but also induced apoptosis of MG-63 cells, which may be related to the ratio of the expression level of bcl-2 and bax as well as reception of the signal of stimulating apoptosis.国家自然科学基金(30871241

结肠癌伴孤立巨大肝转移切除术一例

患者男,72岁,因“反复中上腹胀痛不适1月余“入院;既往有乙肝病史,无高血压、糖尿病、心脏病等病史,无手术史。入院查CT示:左肝巨大占位,约22.1 CMx11.3 CM,与胃小弯粘连(图1);门静脉右支无显示(图2),左结肠壁增厚,考虑结肠癌肝转移可能。肿瘤标记物检查示:CEA 54.52μg/l,CA19-9 120.10 u/Ml,AfP正常,血常规、血液生化分析未见国家自然科学基金资助项目(81272246、81101502、61271336、61327001

Effects of Retinoic Acid on Proliferation and Associated Gene Expression of Human Osteosarcoma MG-63 Cells

目的:研究维甲酸对人成骨肉瘤Mg-63细胞增殖和相关基因表达的影响,以探索其对成骨肉瘤细胞的生物学效应。方法:以1μMOl/l维甲酸处理人成骨肉瘤Mg-63细胞,生长曲线测定,流式细胞仪分析、光镜观察和免疫细胞化学检测等研究维甲酸对Mg-63细胞的生长曲线、细胞周期和相关癌基因、抑癌基因表达的影响,并对其作用机理进行初步分析。结果:维甲酸处理7天后,Mg-63细胞生长抑制率达到42.2%,g0/g1期比例达到61.8%,细胞形态铺展,排列趋于规则,癌基因C-MyC、C-fOS的表达降低,而抑癌基因rb、P27表达上调。结论:1μMOl/l维甲酸可以有效抑制细胞的增殖活动,改变细胞恶性形态特征,下调癌基因C-MyC、C-fOS和上调抑癌基因rb、P27的表达,从而对人成骨肉瘤细胞分化具有诱导作用。Objective:To explore effect of Retinoic Acid(RA) on proliferation of human osteosarcoma MG-63 cells and its mech-anism of antitumor.Methods:The MG-63 cells treated by 1μmol/L RA were subjected to growth curve counts,flow sytometry,im-muncocytochemical assay and light microscopy.We investigated the influence of RA on proliferation,cell cycle,expression of associated oncogene and tumor suppressor gene of MG-63 cells.Then we analyzed the mechanism of RA in inducing differentiation primarily.Re-sults:Seven days after treated by 1 μmol/L RA,the inhibition rate of proliferation of MG-63 cells amounted to 42.2 % and RA reduced the rate of progression from G1 to S phase.The cells tend to be flat and spread.Meanwhile,the expression level of oncogene was down-regulated and the expression level of tumor suppressor gene was upregulated.Conclusions:1μmol/L RA could inhibit proliferation of MG-63 cells,reverse the malignant phenotype characters,downregulate expression of Oncogene c-Myc,c-fos and upregulate expression of Tumor Suppressor Gene Rb,p27,as a result,induce MG-63 cells into differentiation effectively.国家自然科学基金资助项目(30470877

Curcumin-induced Apoptosis Affects the Expression and Localization of hnRNP A2/B1 in Human Osteosarcoma MG-63 Cells

姜黄素(CurCuMIn)诱导处理的人成骨肉瘤Mg-63细胞,在光镜和电镜观察细胞凋亡的基础上,对HnrnP A2/b1在核基质中存在、分布及其与凋亡相关基因产物在Mg-63细胞中的共定位关系进行了研究.经姜黄素处理后,细胞出现染色质凝聚、细胞核固缩、凋亡小体等典型的细胞凋亡形态特征;双向凝胶电泳和质谱鉴定结果显示,HnrnP A2/b1存在于Mg-63细胞核基质蛋白组分中,在姜黄素处理后细胞核基质蛋白中表达下调.蛋白质印迹杂交结果,证实HnrnP A2/b1在姜黄素处理前后的Mg-63细胞核基质蛋白中的存在及其表达下调变化.免疫荧光显微镜观察显示,HnrnP A2/b1定位于Mg-63细胞核基质纤维上,经姜黄素处理后出现分布位置与表达水平变化.激光扫描共聚焦显微镜的观察结果显示,HnrnP A2/b1在Mg-63细胞凋亡过程中与bAX、bCl-2、fAS和P53等基因产物具有共定位关系,且其共定位区域发生了变化.研究结果证实了HnrnP A2/b1定位于核基质纤维上,是一种核基质蛋白,在姜黄素诱导人成骨肉瘤Mg-63凋亡过程中的表达与分布变化及其与凋亡相关基因的关系显然对Mg-63细胞凋亡具有重要影响,这为深入揭示肿瘤细胞凋亡的机制提供了重要科学依据和深入探索的新方向.The morphology of human osteosarcoma MG-63 cells under light microscopy and transmission election microscopy was altered when treated with curcumin.The distribution of heterogeneous nuclear ribonucleoprotein (hnRNP)A2 /B1 in the nuclear matrix and its colocalization with the apoptosis-related gene products were examined.The results demonstrated that curcumin induced typical apoptotic responses,such as chromatin agglutination,nuclei condensation,and apoptotic body formation.Twodimentional PAGE and mass spectrum analyses showed that hnRNP A2 /B1 was complexed with the nuclear matrix.Confirmed by Western blotting,curcumin treatment resulted in a down-regulation of hnRNP A2 /B1 expression.An altered distribution of hnRNP A2 /B1 with the nuclear matrix was observed in immunofluorescence assays.Laser confocal microscopy showed that hnRNP A2 /B1 colocalized with apoptosis-related molecules,including Bax,Bcl-2,Fas and p53,with different patterns before and after curcumin treatments.Our study showed that expression level and the distribution of hnRNP A2 /B1,a nuclear matrix protein,were altered by curcumin treatments and mought be involved in the process of apoptosis in MG-63 cells.国家自然科学基金项目(No.30871241)---

Protective Antigens from Virulent Isolates of Fusobacterium necrophorum FN(A)

通过胰蛋白酶裂解坏死梭杆菌FN(A)型毒力菌株菌体,分别以菌体裂解物上清和沉淀作为抗原免疫家兔制备血清。利用SDS-PAGE/Western-blot技术在菌体中筛选出4种具有免疫原性的组分,通过免疫后的攻毒试验,筛选出1种具有免疫保护性的抗原。抗原分离纯化后,进行N端氨基酸序列测定、免疫试验及生物学特性研究,据试验结果可初步判定该抗原为溶血素类似物或一种新发现的抗原物质。该抗原不仅能使机体产生保护性免疫反应,而且不同菌株中此种抗原间可产生明显的交叉免疫。A virulent isolate of the bacterium FN(A) was lysed with trypsin.Supernatants and precipitates of the bacterial lysates were used to prepare anti-FN serum by immunizing rabbits.Four immunogenic components were isolated using SDS-PAGE/Western-blot.Immunized rabbits were challenged,and one protective antigen was screened.After antigen isolation and purification,the N-terminal amino acid sequence was determined and an immunological test and hemolysis test were performed.Results suggested that this antigen is either a hemolysin analogue or a new antigenic substance.The antigen was able to induce a protective immune response as well as generate a marked cross-immune reaction among different bacterial strains.国家科技部奶牛专项(2002BA518A04);; 中国农业科学院特产研究所科研基金项目(tcs-20041

Application of a three-dimensional visualization technology for precise before retroperitoneal tumor surgery(Report of 15 cases)

目的探讨三维可视化技术在腹膜后肿瘤术前评估中的应用价值。方法回顾性分析2011年3月至2013年12月厦门大学附属成功医院收治的15例腹膜后肿瘤病人的临床资料,应用三维可视化技术将病人术前二维CT图像进行三维可视化重建,通过观察肿瘤与腹腔脏器、腹部大血管之间的关系及测量肿瘤体积、手术模拟进行术前评估。对实施手术的病人,比较重建结果与实际手术的区别,对模拟切除肿瘤体积与实际切除肿瘤体积进行相关性分析。结果 15例病人三维可视化重建后图像清晰立体地显示肿瘤组织、腹腔实质脏器、腹腔大血管的解剖结构及毗邻关系,12例评估后行腹膜后肿瘤切除术,三维重建肿瘤的解剖关系与术中大致相符。12例手术病人术前模拟切除肿瘤体积(1117.50±690.35)M l,实际切除肿瘤体积(1189.92±737.74)M l,两者比较差异无统计学意义(T=0.25,P>0.05),具有相关性(r=0.81,P0.05).The actual liver resection volume was positively correlated with the predicted liver resection volume(r=0.81, P<0.05).Conclusions The three-dimensional visualization technology has acertain degree of clinical value in the precise before retroperitoneal tumor surgery.国家自然科学基金资助(No.81272246;81101502;61271336;61327001