Robotic versus laparoscopic distal pancreatectomy for pancreatic ductal adenocarcinoma: A propensity score-matched analysis

Background: Minimally invasive surgery is becoming increasingly popular in the field of pancreatic surgery. However, there are few studies of robotic distal pancreatectomy(RDP) for pancreatic ductal adenocarcinoma(PDAC). This study aimed to investigate the efficacy and feasibility of RDP for PDAC. Methods: Patients who underwent RDP or laparoscopic distal pancreatectomy(LDP) for PDAC between January 2015 and September 2020 were reviewed. Propensity score matching analyses were performed. Results: Of the 335 patients included in the study, 24 underwent RDP and 311 underwent LDP. A total of 21 RDP patients were matched 1:1 with LDP patients. RDP was associated with longer operative time(209.7 vs. 163.2 min;P = 0.003), lower open conversion rate(0% vs. 4.8%;P < 0.001), higher cost(15 722 vs. 12 699 dollars;P = 0.003), and a higher rate of achievement of an R0 resection margin(90.5% vs. 61.9%;P = 0.042). However, postoperative pancreatic fistula grade B or C showed no significant intergroup difference(9.5% vs. 9.5%). The median disease-free survival(34.5 vs. 17.3 months;P = 0.588) and overall survival(37.7 vs. 21.9 months;P = 0.171) were comparable between the groups. Conclusions: RDP is associated with longer operative time, a higher cost of surgery, and a higher likelihood of achieving R0 margins than LDP.

Central pancreatectomy: The Dagradi Serio Iacono operation. Evolution of a surgical technique from the pioneers to the robotic approach

Central pancreatectomy(CP) is a parenchyma-sparing surgical procedure. The aims are to clarify the history and the development of CP and to give credits to those from whom it came. Ehrhardt, in 1908, described segmental neck resection(SNR) followed, in 1910, by Finney without reconstructive part. In 1950 Honjyo described two cases of SNR combined with gastrectomy for gastric cancer infiltrating the neck of the pancreas. Guillemin and Bessot(1957) and Letton and Wilson(1959) dealt only with the reconstructive aspect of CP. Dagradi and Serio, in 1982, performed the first CP including the resective and reconstructive aspects. Subsequently Iacono has validated it with functional endocrine and exocrine tests and popularized it worldwide. In 2003, Baca and Bokan performed laparoscopic CP and, In 2004, Giulianotti et al performed a robotic assisted CP. CP is performed worldwide either by open surgery or by using minimally-invasive or robotic approaches. This confirms that the operation does not belong to whom introduced it but to everyone who carries out it; however credit must be given to those from whom it came.

Optimizing prediction models for pancreatic fistula after pancreatectomy:Current status and future perspectives

Postoperative pancreatic fistula(POPF)is a frequent complication after pancre-atectomy,leading to increased morbidity and mortality.Optimizing prediction models for POPF has emerged as a critical focus in surgical research.Although over sixty models following pancreaticoduodenectomy,predominantly reliant on a variety of clinical,surgical,and radiological parameters,have been documented,their predictive accuracy remains suboptimal in external validation and across diverse populations.As models after distal pancreatectomy continue to be pro-gressively reported,their external validation is eagerly anticipated.Conversely,POPF prediction after central pancreatectomy is in its nascent stage,warranting urgent need for further development and validation.The potential of machine learning and big data analytics offers promising prospects for enhancing the accuracy of prediction models by incorporating an extensive array of variables and optimizing algorithm performance.Moreover,there is potential for the development of personalized prediction models based on patient-or pancreas-specific factors and postoperative serum or drain fluid biomarkers to improve accuracy in identifying individuals at risk of POPF.In the future,prospective multicenter studies and the integration of novel imaging technologies,such as artificial intelligence-based radiomics,may further refine predictive models.Addressing these issues is anticipated to revolutionize risk stratification,clinical decision-making,and postoperative management in patients undergoing pancre-atectomy.

Robotic versus laparoscopic surgery for sporadic benign insulinoma:Short-and long-term outcomes

Background:Minimally invasive surgery is the optimal treatment for insulinoma.The present study aimed to compare short-and long-term outcomes of laparoscopic and robotic surgery for sporadic benign insulinoma.Methods:A retrospective analysis of patients who underwent laparoscopic or robotic surgery for insulinoma at our center between September 2007 and December 2019 was conducted.The demographic,perioperative and postoperative follow-up results were compared between the laparoscopic and robotic groups.Results:A total of 85 patients were enrolled,including 36 with laparoscopic approach and 49 with robotic approach.Enucleation was the preferred surgical procedure.Fifty-nine patients(69.4%)underwent enucleation;among them,26 and 33 patients underwent laparoscopic and robotic surgery,respectively.Robotic enucleation had a lower conversion rate to laparotomy(0 vs.19.2%,P=0.013),shorter operative time(102.0 vs.145.5 min,P=0.008)and shorter postoperative hospital stay(6.0 vs.8.5 d,P=0.002)than laparoscopic enucleation.There were no differences between the groups in terms of intraoperative blood loss,the rates of postoperative pancreatic fistula and complications.After a median follow-up of 65 months,two patients in the laparoscopic group developed a functional recurrence and none of the patients in the robotic group had a recurrence.Conclusions:Robotic enucleation can reduce the conversion rate to laparotomy and shorten operative time,which might lead to a reduction in postoperative hospital stay.

Laparoscopic spleen-preserving total pancreatectomy for the treatment of low-grade malignant pancreatic tumors:Two case reports and review of literature

BACKGROUND Function-preserving pancreatectomy can improve the long-term quality of life of patients with benign or low-grade malignant tumors,such as intraductal papillary mucinous neoplasms(IPMNs)and mucinous cystic neoplasms.However,there is limited literature on laparoscopic spleen-preserving total pancreatectomy(LSpTP)due to technical difficulties.CASE SUMMARY Patient 1 was a 51-year-old male diagnosed with IPMN based on preoperative imaging,showing solid nodules in the pancreatic head and diffuse dilation of the main pancreatic duct with atrophy of the distal pancreas.We performed L-SpTP with preservation of the splenic vessels,and the postoperative pathology report revealed IPMN with invasive carcinoma.Patient 2 was a 60-year-old male with multiple cystic lesions in the pancreatic head and body.L-SpTP was performed,and intraoperatively,the splenic vein was injured and required ligation.Postoperative pathology revealed a mucinous cystic tumor of the pancreas with low-grade dysplasia.Both patients were discharged on postoperative day 7,and there were no major complications during the perioperative period.CONCLUSION We believe that L-SpTP is a safe and feasible treatment for low-grade malignant pancreatic tumors,but more case studies are needed to evaluate its safety,efficacy,and long-term outcomes.

Robo2基因对黑色素形成影响的研究进展

黑色素是一类生物色素,具有抗氧化、调控体温和防辐射等重要作用,虽不是生物生长发育所必需物质,但它的存在可提高生物的生存竞争能力。动物黑色素是由黑素细胞内的细胞器黑素小体合成储存,动物黑素细胞主要是神经嵴细胞沿背侧路径迁移分化形成。环形交叉路口引导受体2(roundabout guidance receptor 2,Robo2)基因属于轴突导向分子家族Robo的一员,是指导背部轴突导向的主要受体。笔者通过介绍动物黑色素形成和合成途径,简述Robo2基因的来源及功能,分述Robo2基因在黑色素形成中对神经元生长锥方向移动、小眼畸形相关转录因子(microphthalmia-associated transcription factor, MITF)表达和轴突发育的作用,并对黑色素合成机制进行补充,为后期寻找影响黑色素合成的主效基因和揭示黑色素合成机制提供理论依据。但目前对于Robo2基因在黑色素形成中的具体作用机制和调控途径还存在许多未解之谜,需要进一步的研究来揭示。

TMC BC ROBO 6智能采血系统故障维修3例

简要介绍了TMC BC ROBO 6智能采血系统的工作原理,分析了该设备在日常使用中出现的3例故障的原因,并给出了故障排除方法,为临床工程师排除类似故障提供了参考。

Spleen-preserving distal pancreatectomy from multi-port to reducedport surgery approach

BACKGROUND Minimally invasive pancreatic surgery via the multi-port approach has become a primary surgical method for distal pancreatectomy(DP)due to its advantages of lower wound pain and superior cosmetic results.Some studies have applied reduced-port techniques for DP in an attempt to enhance cosmetic outcomes due to the minimally invasive effects.Numerous recent review studies have compared multi-port laparoscopic DP(LDP)and multi-port robotic DP(RDP);most of these studies concluded multi-port RDP is more beneficial than multi-port LDP for spleen preservation.However,there have been no comprehensive reviews of the value of reduced-port LDP and reduced-port RDP.AIM To search for and review the studies on spleen preservation and the clinical outcomes of minimally invasive DP that compared reduced-port DP surgery with multi-port DP surgery.METHODS The PubMed medical database was searched for articles published between 2013 and 2022.The search terms were implemented using the following Boolean search algorithm:(“distal pancreatectomy”OR“left pancreatectomy”OR“peripheral pancreatic resection”)AND(“reduced-port”OR“single-site”OR“single-port”OR“dual-incision”OR“single-incision”)AND(“spleen-preserving”OR“spleen preservation”OR“splenic preservation”).A literature review was conducted to identify studies that compared the perioperative outcomes of reduced-port LDP and reduced-port RDP.RESULTS Fifteen articles published in the period from 2013 to 2022 were retrieved using three groups of search terms.Two studies were added after manually searching the related papers.Finally,10 papers were selected after removing case reports(n=3),non-English language papers(n=1),technique papers(n=1),reviews(n=1),and animal studies(n=1).The common items were defined as items reported in more than five papers,and data on these common items were extracted from all papers.The ten studies included a total of 337 patients(females/males:231/106)who underwent DP.In total,166 patients(females/males,106/60)received multi-port LDP,126(females/males,90/36)received reduced-port LDP,and 45(females/males,35/10)received reduced-port RDP.CONCLUSION Reduced-port RDP leads to a lower intraoperative blood loss,a lower postoperative pancreatic fistula rate,and shorter hospital stay and follow-up duration,but has a lower spleen preservation rate.

Slit2和Robo1在浸润性乳腺癌中的表达及其临床意义

目的 观察Slit2和Robo1在浸润性乳腺癌的表达变化及其与浸润性乳腺癌临床病理指标的相关性,探讨Slit2/Robo1信号通路对浸润性乳腺癌病理过程的调控作用。方法 应用免疫组织化学法观察Slit2和Robo1在浸润性乳腺癌、乳腺纤维腺瘤和正常乳腺组织的表达;应用卡方检验或校正的卡方检验分析Slit2和Robo1在各组间阳性率差异;采用方差分析、Kruskal-Wallis或Mann-Whitney U检验分析Slit2和Robo1的免疫组织化学染色量差异;采用非参数Spearman等级相关分析检验Slit2和Robo1与浸润性乳腺癌临床病理指标相关性。结果 Slit2定位表达于细胞质;Robo1定位表达于细胞质和细胞核。Slit2和Robo1在浸润性乳腺癌的表达率和表达量明显低于乳腺纤维腺瘤和正常乳腺组织。在浸润性乳腺癌中,Slit2和Robo1具有高度相关性,且Slit2与ER、PR、Her2呈正相关(P<0.05);Robo1与ER、PR呈正相关(P<0.05)。Slit2/Robo1与浸润性乳腺癌患者年龄、淋巴结转移、肿瘤大小、病理分期和组织学分级无关(P>0.05)。结论 Slit2和Robo1在浸润性乳腺癌低表达,且与其发生、发展和预后存在相关性,提示Slit2/Robo1信号通路可能参与浸润性乳腺癌的病理过程,发挥调控作用。

Outcomes of total pancreatectomy with islet autotransplantation:A systematic review and meta-analysis

BACKGROUND Despite the increased use of total pancreatectomy with islet autotransplantation(TPIAT),systematic evidence of its outcomes remains limited.AIM To evaluate the outcomes of TPIAT.METHODS We searched PubMed,EMBASE,and Cochrane databases from inception through March 2019 for studies on TPIAT outcomes.Data were extracted and analyzed using comprehensive meta-analysis software.The random-effects model was used for all variables.Heterogeneity was assessed using the I2 measure and Cochrane Q-statistic.Publication bias was assessed using Egger’s test.RESULTS Twenty-one studies published between 1980 and 2017 examining 1011 patients were included.Eighteen studies were of adults,while three studied pediatric populations.Narcotic independence was achieved in 53.5%[95% Confidence Interval(CI):45-62,P<0.05,I2=81%]of adults compared to 51.9%(95%CI:17-85,P<0.05,I2=84%)of children.Insulinindependence post-procedure was achieved in 31.8%(95%CI:26-38,P<0.05,I2=64%)of adults with considerable heterogeneity compared to 47.7%(95%CI:20-77,P<0.05,I2=82%)in children.Glycated hemoglobin(HbA1C)12 mo post-surgery was reported in four studies with a pooled value of 6.76%(P=0.27).Neither stratification by age of the studied population nor metaregression analysis considering both the study publication date and the islet-cell-equivalent/kg weight explained the marked heterogeneity between studies.CONCLUSION These results indicate acceptable success for TPIAT.Future studies should evaluate the discussed measures before and after surgery for comparison.

H9N2禽流感病毒PB2蛋白627位点突变对小鼠肺脏RIP3、Slit2和Robo4表达和分布的影响

PB2蛋白627位点被证实是决定甲型流感病毒宿主范围和致病性的关键因子,为深入探究H9N2禽流感病毒(avian influenza virus,AIV)及其PB2蛋白627位点突变株对BALB/C小鼠肺脏RIP3、Slit2和Robo4基因表达和组织分布的影响,该研究使用H9N2 AIV(V_(K627))和该毒株PB2蛋白627位点突变株(rV_(K627E))感染BALB/C小鼠,分别在攻毒后第1、3、5、6 d采集肺组织,通过qRT⁃PCR和免疫组织化学技术对RIP3、Slit2和Robo4基因在小鼠肺组织中的特异性表达和分布进行研究。结果显示,攻毒组小鼠肺脏RIP3的表达量与对照组相比显著上升,同时VK627组RIP3的表达量显著高于rV_(K627E)组;Slit2和Robo4的表达量在攻毒后第1 d明显低于对照组,之后rVK627E组的表达量与对照组和VK627E组相比显著上升。免疫组织化学检测结果显示,RIP3蛋白主要分布在小鼠肺泡壁上皮细胞以及肺动脉血管内皮细胞,呈弱阳性表达,而攻毒组RIP3蛋白在气管粘膜下层细胞也有中至强阳性表达;Slit2蛋白在对照组和rVK627E组小鼠的肺泡上皮细胞以及气管粘膜上皮细胞中呈现中强阳性表达,而在VK627组中呈现弱阳性表达。Robo4蛋白的分布和表达情况与Slit2蛋白相似。综上所述,H9N2 AIVs感染小鼠后,会显著影响RIP3和Slit2/Robo4的表达和分布,且其表达和分布与H9N2 AIVs对小鼠的致病性密切相关;PB2蛋白627位点的突变在H9N2 AIVs影响RIP3、Slit2和Robo4表达和分布中起着重要作用。该研究结果将为进一步探究H9N2 AIVs及其点突变毒株介导宿主病理发生的分子机制和抗炎策略的选择提供基础数据。

Distal pancreatectomy with or without radical approach, vascular resections and splenectomy: Easier does not always mean easy

Because distal pancreatectomy(DP)has no reconstructive steps and less frequent vascular involvement,it is thought to be the easier counterpart of pancreaticoduodenectomy.This procedure has a high surgical risk and the overall incidences of perioperative morbidity(mainly pancreatic fistula),and mortality are still high,in addition to the challenges that accompany delayed access to adjuvant therapies(if any)and prolonged impairment of daily activities.Moreover,surgery to remove malignancy of the body or tail of the pancreas is associated with poor long-term oncological outcomes.From this perspective,new surgical approaches,and aggressive techniques,such as radical antegrade modular pancreato-splenectomy and DP with celiac axis resection,could lead to improved survival in those affected by more locally advanced tumors.Conversely,minimally invasive approaches such as laparoscopic and robotic surgeries and the avoidance of routine concomitant splenectomy have been developed to reduce the burden of surgical stress.The purpose of ongoing surgical research has been to achieve significant reductions in perioperative complications,length of hospital stays and the time between surgery and the beginning of adjuvant chemotherapy.Because a dedicated multidisciplinary team is crucial to pancreatic surgery,hospital and surgeon volumes have been confirmed to be associated with better outcomes in patients affected by benign,borderline,and malignant diseases of the pancreas.The purpose of this review is to examine the state of the art in distal pancreatectomies,with a special focus on minimally invasive approaches and oncological-directed techniques.The widespread reproducibility,cost-effectiveness and long-term results of each oncological procedure are also taken into deep consideration.

Slit—Robo GTPase激活蛋白在坐骨神经切断后脊神经节的表达变化

目的：观察Slit—Robo GTP酶激活蛋白（srGAP）在成年哺乳类动物脊神经节（DRG）的表达及其变化，了解srGAP在神经再生中的作用。方法：应用RT-PCR、免疫印迹法、免疫组织化学方法，检测成年SD大鼠正常和坐骨神经切断后1、3、7d的DRGsrGAP1、2、3mRNA及其蛋白的表达。结果：srGAP1、3mRNA在正常DRG均有弱表达，而srGAP2不表达；坐骨神经切断后3、7d，srGAP1、3mRNA表达增强，以术后7d最高；免疫组织化学显示，srGAP1在神经元胞体、突起均有表达，在DRG内胶质细胞亦有表达，坐骨神经切断后3、7d表达增强。结论：本研究结果说明Slit-Robo信号通路存在于大鼠周围感觉神经元内，周围神经损伤可激活此信号通路。

Minimally invasive radical pancreatectomy for left-sided pancreatic cancer:Current status and future perspectives

Minimally invasive distal pancreatectomy with splenectomy has been regarded as a safe and effective treatment for benign and borderline malignant pancreatic lesions.However,its application for left-sided pancreatic cancer is still being debated.The clinical evidence for radical antegrade modular pancreatosplenectomy(RAMPS)-based minimally invasive approaches for leftsided pancreatic cancer was reviewed.Potential indications and surgical concepts for minimally invasive RAMPS were suggested.Despite the limited clinical evidence for minimally invasive distal pancreatectomy in left-sided pancreatic cancer,the currently available clinical evidence supports the use of laparoscopic distal pancreatectomy under oncologic principles in wellselected left sided pancreatic cancers.A pancreasconfined tumor with an intact fascia layer between the pancreas and left adrenal gland/kidney positioned more than 1 or 2 cm away from the celiac axis is thought to constitute a good condition for the use of margin-negative minimally invasive RAMPS.The use of minimally invasive(laparoscopic or robotic)anterior RAMPS is feasible and safe for margin-negative resection in wellselected left-sided pancreatic cancer.The oncologic feasibility of the procedure remains to be determined;however,the currently available interim results indicate that even oncologic outcomes will not be inferior to those of open radical distal pancreatosplenectomy.

Laparoscopic pancreatectomy: Indications and outcomes

The application of minimally invasive approaches to pancreatic resection for benign and malignant diseases has been growing in the last two decades. Studies have demonstrated that laparoscopic distal pancreatectomy (LDP) is feasible and safe, and many of them show that compared to open distal pancreatectomy, LDP has decreased blood loss and length of hospital stay, and equivalent post-operative complication rates and short-term oncologic outcomes. LDP is becoming the procedure of choice for benign or small low-grade malignant lesions in the distal pancreas. Minimally invasive pancreaticoduodenectomy (MIPD) has not yet been widely adopted. There is no clear evidence in favor of MIPD over open pancreaticoduodenectomy in operative time, blood loss, length of stay or rate of complications. Robotic surgery has recently been applied to pancreatectomy, and many of the advantages of laparoscopy over open surgery have been observed in robotic surgery. Laparoscopic enucleation is considered safe for patients with small, benign or low-grade malignant lesions of the pancreas that is amenable to parenchyma-preserving procedure. As surgeons&#x02019; experience with advanced laparoscopic and robotic skills has been growing around the world, new innovations and breakthrough in minimally invasive pancreatic procedures will evolve.

RoboAgent来啦!

2023年8月,卡内基梅隆大学研究团队联合Meta发布了一款通用机器人智能体——RoboAgent。这个机器人可了不得,它能流畅自如地烘焙、上茶、捡东西、打扫厨房等,自主实现12种不同的复杂技能,可谓“上得了厅堂,下得了厨房”!更有趣的是,不管你在旁边怎么干扰它,它都会想方设法完成任务。

《发动机油氧化安定性的测定ROBO试验法》标准解读

NB/SH/T 0976—2019《发动机油氧化安定性的测定ROBO试验法》标准已于2019年6月4日发布,2019年10月1日实施。本文介绍了NB/SH/T 0976—2019标准的制定背景、标准注意事项及精密度。标准的制定背景和意义热氧化安定性是汽车发动机油的重要特性之一^([1])。不同质量等级汽油机油的氧化性能是通过程序Ⅲ的发动机台架试验来确定,不同质量等级程序Ⅲ试验的试验条件不同,具体条件见表1。

Robotic-assisted versus open total pancreatectomy: a propensity score-matched study

Background:Total pancreatectomy(TP)is a complex surgical procedure with significant postoperative morbidity.Despite the narrowed range of indications for TP,the introduction of neoadjuvant chemotherapy and the increasing complexity of surgical resections performed in high-volume centers has increased the number of annually performed TPs,especially regarding malignant disease.The introduction of robotic-assisted pancreatic surgery has provided a novel and minimally invasive approach for TP,yet the feasibility of this technique is still unknown.This study assessed the safety and efficacy of robotic-assisted total pancreatectomy(RTP)compared to conventional open total pancreatectomy(OTP).Methods:All patients who underwent TP between March 2015 and July 2019 in a high-volume institution for pancreatic surgery were included in this retrospective study.Clinical data and perioperative outcomes were derived from the prospectively maintained institutional database.A 1:1 propensity score matching(PSM)method was utilized to compare the RTP and OTP cohorts to minimize bias.Results:A standardized surgical protocol was utilized for RTP following a learning curve of RPD and RDP.The median operative time for patients who underwent RTP was significantly decreased compared to those who underwent OTP[300(IQR,250-360)vs.360 min(IQR,300-525),P=0.031].Additionally,en bloc resection and spleen-preserving rates were also higher in the RTP cohort.Major 30-day morbidity(Clavien-Dindo>IIIa)and 90-day mortality were similar between the two cohorts.After a median follow-up time of 15(IQR,8-24)months,both the RTP and OTP cohorts had a comparable quality of life regarding exocrine and endocrine insufficiency.Conclusions:RTP appears to be safe and feasible when utilized in high-volume centers for the indicated management of benign and highly selected malignant pancreatic disease.However,further prospective randomized studies are needed to assess the feasibility of this approach.

电针对周围神经损伤大鼠轴突靶向再生修复的Slit/Robo信号通路的影响

目的:探讨电针对周围神经损伤大鼠轴突靶向再生修复大鼠的Slit/Robo信号通路的影响。方法:清洁级健康雄性SD大鼠120只,Excel软件随机分成空白组、假手术组、模型组和电针组,每组30只,每组再分为7 d、15 d和23 d3个亚组,每亚组10只。后两组大鼠右坐骨神经横断后即刻端对端缝合造模。假手术组只切开相应皮肤再缝合。造模后第二天,电针组取'环跳''足三里'进行电针治疗,1次/d,每次15 min,7 d为1个疗程,连续治疗3个疗程,疗程间隔1d。空白组不予干预,模型组、假手术组予模拟电针组抓取。每疗程结束后,分别检测比较大鼠腓肠肌湿重恢复率(WWG);实时荧光定量核酸扩增检测系统(qPCR)观察比较坐骨神经Robo1mRNA的表达变化;蛋白质免疫印迹法(Western Blot)观察比较坐骨神经和相应脊髓段(L4-L6) Slit2、Robo1蛋白的表达变化。结果:与空白组、假手术组比较,模型组、电针组WWG恢复率降低(P <0. 01);与模型组比较,电针组WWG恢复率逐渐升高(P <0. 05)。电针组与模型对照组比较,大鼠损伤的坐骨神经和相应脊髓段中Slit2蛋白表在第1疗程后(7 d)达到高峰后逐渐降低,3个疗程均高于模型组(P <0. 01),且两组均高于空白组和假手术组(P <0. 01);Robo1蛋白及其mRNA表达也有类似规律,但表达高峰在第2疗程后(15 d)。结论:电针治疗能增强损伤坐骨神经和相应脊髓段中Slit2蛋白、Robo1蛋白及其mRNA的表达,调控Slit/Robo信号通路可能是其促进周围神经损伤再生修复的机制之一。

Slit-Robo信号对口腔癌Tb细胞增殖作用的影响

目的:探讨SlitRobo信号对人舌鳞状上皮癌细胞系Tb细胞生长与增殖的影响及其作用机制。方法:采用Westernblot免疫印迹法检测Tb细胞中Slit和Robo蛋白的表达;在Robo1受体胞外区的单克隆抗体R5作用下,以MTT比色法与平板克隆形成实验观察Tb细胞生长变化及用免疫组化检测增殖相关蛋白PCNA的表达。结果:Tb细胞表达Slit和Robo蛋白;在R5抗体的作用下,Tb细胞体外生长能力受到抑制,增殖能力明显减弱,PCNA蛋白表达水平下降。结论:SlitRobo信号能够调控Tb细胞的生长增殖能力,对肿瘤细胞内的PCNA有正调控作用,提示该信号可能参与了口腔肿瘤的发生、发展过程。