Evaluating combined bevacizumab and XELOX in advanced colorectal cancer: Serum markers carcinoembryonic antigen, carbohydrate antigen 125, carbohydrate antigen 199 analysis

BACKGROUND Colorectal cancer ranks third and second among common and fatal cancers.The treatment of metastatic colorectal cancer(mCRC)is generally based on XELOX in clinical practice,which includes capecitabine(CAP)and oxaliplatin.Serum tumor markers carcinoembryonic antigen(CEA),carbohydrate antigen(CA)125 and CA199 are prognostic factors for various tumors.AIM To investigate evaluating combined bevacizumab(BEV)and XELOX in advanced colorectal cancer:Serum markers CEA,CA125,CA199 analysis.METHODS In this retrospective study,a total of 94 elderly patients diagnosed with mCRC were recruited and subsequently categorized into two groups based on the distinct treatment modalities they received.The control group was treated with XELOX plus CAP(n=47),while the observation group was treated with XELOX plus CAP and BEV(n=47).Several indexes were assessed in both groups,including disease control rate(DCR),incidence of adverse effects,serum marker levels(CEA,CA125,and CA19)and progression-free survival(PFS).RESULTS After 9 wk of treatment,the serum levels of CEA,CA199 and CA125 in the observation group were significantly lower than those in the control group(P<0.05).Moreover,the PFS of the observation group(9.12±0.90 mo)was significantly longer than that of the control group(6.49±0.64 mo).Meanwhile,there was no statistically significant difference in the incidence of adverse reactions and DCR between the two groups during maintenance therapy(P>0.05).CONCLUSION On the basis of XELOX treatment,the combination of BEV and CAP can reduce serum tumor marker levels and prolong PFS in patients with mCRC.

OPA3 overexpression modulates lipid droplet production and sensitizes colorectal cancer cells to bevacizumab treatment

Background:Colorectal cancer(CRC)represents a substantial risk to public health.Bevacizumab,thefirst US FDA-approved antiangiogenic drug(AAD)for human CRC treatment,faces resistance in patients.The role of lipid metabolism,particularly through OPA3-regulated lipid droplet production,in overcoming this resistance is under investigation.Methods:The protein expression pattern of OPA3 in CRC primary/normal tissues was evaluated by bioinformatics analysis.OPA3-overexpressed SW-480 and HCT-116 cell lines were established,and bevacizumab resistance and OPA3 effects on cell malignancy were examined.OPA3 protein/mRNA expression and lipid droplet-related genes were measured with Western blot and qRT-PCR.OPA3 subcellular localization was detected using immunofluorescence.Proliferation and apoptosis were assessed via colony formation andflow cytometry.Tube formation assays were conducted to assess the angiogenic potential of human umbilical vein endothelial cells(HUVECs).Lipid analysis was used to measure the phosphatidylcholine(PC)and lysophosphatidylcholine(LPC)levels in CRC cells.Results:Bioinformatics analysis revealed that OPA3 was downregulated in CRC.Overexpression of OPA3 inhibited CRC cell proliferation,stimulated apoptosis,and suppressed the angiogenic ability of HUVECs.OPA3 effectively reversed the resistance of CRC cells to bevacizumab and decreased lipid droplet production in CRC cells.Additionally,OPA3 reversed the bevacizumab-induced lipid droplet production in CRC cells,thereby increasing CRC cell sensitivity to bevacizumab treatment.Conclusion:This study suggests that OPA3 modulates lipid metabolism in CRC cells and reduces resistance to bevacizumab in CRC cells.Therefore,OPA3 may be a potential therapeutic target against the AAD resistance in CRC.

Fatal intratumoral hemorrhage in a patient with hepatocellular carcinoma following successful treatment with atezolizumab/bevacizumab:A case report

BACKGROUND Atezolizumab/bevacizumab is emerging as the new standard for advanced hepatocellular carcinoma(HCC),with ongoing real-world implementation to study its effectiveness.As the use of atezolizumab/bevacizumab increases,various side effects have been reported in clinical practice,most notably increased bleeding caused by bevacizumab.CASE SUMMARY In this case report,we present a rare and fatal case of intratumoral hemorrhage in a patient with advanced HCC following successful treatment with atezolizumab/bevacizumab.A 63-year-old male diagnosed with HCC initially underwent four cycles of intra-arterial chemotherapy.However,follow-up abdominal computed tomography(CT)revealed disease progression.Subsequently,the treatment plan was modified to atezolizumab/bevacizumab.After the fifth cycle of atezolizumab/bevacizumab,CT showed partial regression of HCC.One week later,he visited the emergency room due to severe abrupt abdominal pain.Abdominal CT revealed focal rupture of HCC in the medial segment inferior portion with active bleeding and a large amount of hemoperitoneum.Angiography was performed on the same day,and embolization of A4 and A8 branches using lipiodol and gelfoam was implemented.Despite successful hemostasis,the patient subsequently developed liver failure and died.CONCLUSION Atezolizumab/bevacizumab for advanced HCC suggests that intratumoral hemorrhage may be crucial despite good tumor response after immunotherapy,emphasizing the continuous monitoring of this side effect.

Chemotherapy combined with bevacizumab for small cell lung cancer with brain metastases:A case report

BACKGROUND Small cell lung cancer(SCLC)is a common and aggressive subtype of lung cancer.It is characterized by rapid growth and a high mortality rate.Approximately 10%of patients with SCLC present with brain metastases at the time of diagnosis,which is associated with a median survival of 5 mo.This study aimed to summarize the effect of bevacizumab on the progression-free survival(PFS)and overall survival of patients with brain metastasis of SCLC.CASE SUMMARY A 62-year-old man was referred to our hospital in February 2023 because of dizziness and numbness of the right lower extremity without headache or fever for more than four weeks.The patient was diagnosed with limited-stage SCLC.He received 8 cycles of chemotherapy combined with maintenance bevacizumab therapy and achieved a PFS of over 7 mo.CONCLUSION The combination of bevacizumab and irinotecan effectively alleviated brain metastasis in SCLC and prolonged PFS.

Efficacy of chemotherapy containing bevacizumab in patients with metastatic colorectal cancer according to programmed cell death ligand 1

BACKGROUND Bevacizumab,an anti-vascular endothelial growth factor(VEGF)monoclonal antibody,inhibits angiogenesis and reduces tumor growth.Serum VEGF-C,lactate dehydrogenase,and inflammatory markers have been reported as predictive markers related to bevacizumab treatment.Programmed cell death ligand 1(PD-L1)could act upon VEGF receptor 2 to induce cancer cell angiogenesis and metastasis.AIM To investigate the efficacy of bevacizumab-containing chemotherapy in patients with metastatic colorectal cancer(CRC)according to the expression of PD-L1.METHODS This analysis included CRC patients who received bevacizumab plus FOLFOX or FOLFIRI as first-line therapy between June 24,2014 and February 28,2022,at Samsung Medical Center(Seoul,South Korea).Analysis of patient data included evaluation of PD-L1 expression by the combined positive score(CPS).We analyzed the efficacy of bevacizumab according to PD-L1 expression status in patients with CRC.RESULTS A total of 124 patients was included in this analysis.Almost all patients were treated with bevacizumab plus FOLFIRI or FOLFOX as the first-line chemotherapy.While 77%of patients received FOLFOX,23%received FOLFIRI as backbone first-line chemotherapy.The numbers of patients with a PD-L1 CPS of 1 or more,5 or more,or 10 or more were 105(85%),64(52%),and 32(26%),respectively.The results showed no significant difference in progression-free survival(PFS)and overall survival(OS)with bevacizumab treatment between patients with PDL1 CPS less than 1 and those with PD-L1 CPS of 1 or more(PD-L1<1%vs PD-L1≥1%;PFS:P=0.93,OS:P=0.33),between patients with PD-L1 CPS less than 5 and of 5 or more(PD-L1<5%vs PD-L1≥5%;PFS:P=0.409,OS:P=0.746),and between patients with PD-L1 CPS less than 10 and of 10 or more(PD-L1<10%vs PD-L1≥10%;PFS:P=0.529,OS:P=0.568).CONCLUSION Chemotherapy containing bevacizumab can be considered as first-line therapy in metastatic CRC irrespective of PD-L1 expression.

Clinical evaluation of sintilimab in conjunction with bevacizumab for advanced colorectal cancer with microsatellite stable-type after failure of first-line therapy

BACKGROUND At present,immune checkpoint inhibitors(ICIs)remain the 1st-line therapy me-thod for patients suffering from high microsatellite instability/deficient misma-tch repair metastatic colorectal cancer(mCRC).However,ICI treatments demon-strate minimal therapeutic efficacy against microsatellite stable(MSS)/proficient mismatch repair(pMMR)CRC.This is mainly because this type of tumor is a“cold tumor”with almost no lymphocyte infiltration.Anti-angiogenic drugs have been found to improve the immune microenvironment by promoting many immune cells to enter the immune microenvironment,thereby exerting anti-tumor effects.AIM To investigate the effects of ICIs combined with bevacizumab monoclonal anti-body on tumor immune cells in MSS/pMMR advanced CRC patients with first-line treatment failure.METHODS A total of 110 MSS/pMMR patients with advanced CRC after first-line treatment failure in the Affiliated Hospital of Qinghai University were enrolled for a ran-domized controlled trial.In short,patients in the experimental group(n=60)were given sintilimab plus bevacizumab for 4 cycles,and those in the control group(n=50)patients were treated with FOLFIRI combined with bevacizumab for 4 cycles.The expression levels of cluster of differentiation(CD)8(+)T cells,tumor-associated macrophages(TAMs),and cancer-associated fibroblasts(CAFs)were comprehensively evaluated to assess the effects of sintilimab combined with bevacizumab on MSS/pMMR advanced CRC sufferers following failure of 1st-line therapy.RESULTS The positive expression rates of CD8(+)T lymphocytes(30%vs 50%),TAMs(23.30%vs 60%),and CAFs(23.30%vs 50%)before and after treatment in both groups exhibited statistical significance(P<0.05).Additionally,the therapeutic effects of both groups(partial remission:26.67%vs 10%;objective response rate:26.70%vs 10%)were significantly different(P<0.05).Although the experimental group showed a higher progression-free survival,median progression-free survival,and disease control rate than the control group,the difference was not statist-ically significant.Moreover,no significant difference in the occurrence rate of drug-related adverse reactions after treatment between the two groups was found(P>0.05).CONCLUSION ICIs in combination with bevacizumab can not only improve the patient’s prognosis but also yield safe and controllable adverse drug reactions in patients suffering from MSS/pMMR advanced CRC after failure to a 1st-line therapy.

Vascular endothelial growth factor pathway’s influence on bevacizumab efficacy in metastatic colorectal cancer treatment

In this article,an article published in the World Journal of Gastrointestinal Oncology,which focuses on whether the expression of programmed death-ligand 1(PD-L1)affects the effectiveness of chemotherapy regimens,including bevacizumab,in treating patients with colorectal cancer(CRC).Through neutralization of vascular endothelial growth factor(VEGF),bevacizumab inhibits tumor angiogenesis,impairing neovascularization and thereby depriving the tumor of essential nutrients and oxygen.Conversely,PD-L1 binding to VEGF receptor 2 promotes angiogenesis,supporting tumor vasculature.The interplay between these pathways complicates the assessment of bevacizumab’s efficacy in cancer therapy,notably in CRC,where VEGF and PD-L1 significantly affect treatment response.This review examines metastatic CRC treatment strategies,focusing on bevacizumab’s mechanism of action and the role of PD-L1 in this therapeutic context.

BEV特征下激光雷达和单目相机融合的目标检测算法研究

为提高自动驾驶汽车对周围目标物的检测精度,提出了一种激光雷达和单目图像数据在鸟瞰图特征上融合的目标物检测算法(monocular-bird’s eye view fusion,Mono-BEVFusion)。为构建相机BEV特征,搭建了简单高效的深度预测网络预测相机特征的深度,基于显式监督的方法用深度真值对其进行监督。构建激光雷达BEV特征时,将激光点云体素化为柱状网格转化到BEV特征下,设计BEV特征融合网络将激光点云BEV特征和相机BEV特征融合,将融合特征输入到目标检测框架得到目标物(汽车、行人和骑行人)检测结果。利用KITTI数据集和实车路采数据对Mono-BEVFusion融合算法进行评估,实验结果表明该算法相较于现有融合算法综合平均精度提升了2.90个百分点,其中汽车类和行人类单项检测精度分别提升3.38个百分点和4.13个百分点。Mono-BEVFusion融合算法对遮挡目标或者距离较远的目标有较稳定的检测效果,能够有效避免单传感器的漏检现象,具有较好的实际应用价值。

Comprehensive molecular analysis to predict the efficacy ofchemotherapy containing bevacizumab in patients with metastaticcolorectal cancer

Background:Although bevacizumab is an important treatment for metastatic colorectal cancer(CRC),not allpatients with CRC benefit from it;in unselected patient populations,only modest survival benefits have been reported.Methods:We evaluated clinical outcomes in 110 patients using comprehensive molecular characterization to identifybiomarkers for a response to bevacizumab-containing treatment.The molecular analysis comprised whole-exomesequencing,ribonucleic acid sequencing,and a methylation array on patient tissues.Results:Genomic and molecularcharacterization was successfully conducted in 103 patients.Six of 103 CRC samples were hypermutated,and none ofthe non-hypermutant tumors were microsatellite unstable.Among those 103 patients,89 had adenocarcinoma(ADC),15 were diagnosed with mucinous ADC,and six had signet-ring cell carcinoma(SRCC).Consensus molecular subtype(CMS)2 was unique to ADC.Of the four SRCCs,two were CMS1,one was CMS4,and the other was CMS3.APCmutation status was a significantly enriched factor in responders to bevacizumab treatment.Fibroblast growth factorreceptor(FGFR)1/2 signaling was upregulated in non-responders,whereas cell cycle,transfer ribonucleic acidprocessing,nucleotide excision repair,and oxidative phosphorylation pathways were enriched in responders.Inaddition,IGF1 was differentially expressed in non-responders(log2 fold change=−1.43,p=4.11×10^(−5),falsediscovery rate=0.098),and FLT1 was highly methylated in non-responders(p=7.55×10^(−3)).When the molecularpathways were reanalyzed separately according to the backbone chemotherapy(FOLFOX vs.FOLFIRI),thesignificance of the molecular pathways varied according to the backbone chemotherapy.Conclusions:This studysought a subset of CRC patients with a distinct clinical response to chemotherapy containing bevacizumab.Ourresults need to be validated in a large group of homogenous patient cohort and examined according to the differentchemotherapy backbones to create personalized therapeutic opportunities in CRC.

Retrospective efficacy analysis of olaparib combined with bevacizumab in the treatment of advanced colorectal cancer

BACKGROUND Colorectal cancer(CRC)is a highly prevalent malignancy of the digestive tract worldwide,characterized by a significant morbidity and mortality rate and subtle initial symptoms.Diarrhea,local abdominal pain,and hematochezia occur with the development of cancer,while systemic symptoms such as anemia and weight loss occur in patients with advanced CRC.Without timely interventions,the disease can have fatal consequences within a short span.The current therapeutic options for colon cancer include olaparib and bevacizumab,which are widely utilized.This study intends to evaluate the clinical efficacy of olaparib combined with bevacizumab in the treatment of advanced CRC,hoping to provide insights into advanced CRC treatment.AIM To investigate the retrospective efficacy of olaparib combined with bevacizumab in the treatment of advanced CRC.METHODS A retrospective analysis was conducted on a cohort of 82 patients with advanced colon cancer who were admitted to the First Affiliated Hospital of the University of South China between January 2018 and October 2019.Among them,43 patients subjected to the classical FOLFOX chemotherapy regimen were selected as the control group,and 39 patients undergoing treatment with olaparib combined with bevacizumab were selected as the observation group.Subsequent to different treatment regimens,the short-term efficacy,time to progression(TTP),and incidence rate of adverse reactions between the two groups were compared.Changes in serum-related indicators[vascular endothelial growth factor(VEGF),matrix metalloprotein-9(MMP-9),cyclooxygenase-2(COX-2)]and tumor markers[human epididymis protein 4(HE4),carbohydrate antigen 125(CA125),carbohydrate antigen 199(CA199)]levels before and after treatment were compared between the two groups at the same time.RESULTS The objective response rate was discovered to be 82.05%,and the disease control rate was 97.44%in the observation group,which were significantly higher than the respective rates of 58.14%and 83.72%in the control group(P<0.05).The median TTP was 24 mo(95%CI:19.987-28.005)in the control group and 37 mo(95%CI:30.854-43.870)in the observation group.The TTP in the observation group was significantly better than that in the control group,and the difference held statistical significance(log-rank test value=5.009,P=0.025).Before treatment,no substantial difference was detected in serum VEGF,MMP-9,and COX-2 levels and tumor markers HE4,CA125,and CA199 levels between the two groups(P>0.05).Following treatment with different regimens,the above indicators in the two groups were remarkably promoted(P<0.05),VEGF,MMP-9,and COX-2 in the observation group were lower than those in the control group(P<0.05),and HE4,CA125,and CA199 levels were also lower than those in the control group(P<0.05).Visà-vis the control group,the total incidence of gastrointestinal reactions,thrombosis,bone marrow suppression,liver and kidney function injury,and other adverse reactions in the observation group was notably lowered,with the difference considered statistically significant(P<0.05).CONCLUSION Olaparib combined with bevacizumab in the treatment of advanced CRC demonstrates a strong clinical effect of delaying disease progression and reducing the serum levels of VEGF,MMP-9,COX-2 and tumor markers HE4,CA125 and CA199.Moreover,given its fewer adverse reactions,it can be regarded as a safe and reliable treatment option.

Treatment outcome analysis of bevacizumab combined with cyclophosphamide and oxaliplatin in advanced pseudomyxoma peritonei

BACKGROUND Pseudomyxoma peritonei(PMP)is a rare peritoneal malignant tumor syndrome.Cytoreductive surgery combined with hyperthermic intraperitoneal chemotherapy is its standard treatment.However,there are few studies and insufficient evidence regarding systemic chemotherapy of advanced PMP.Regimens for colorectal cancer are often used clinically,but there is no uniform standard for late-stage treatment.AIM To determine if bevacizumab combined with cyclophosphamide and oxaliplatin(Bev+CTX+OXA)is effective for treatment of advanced PMP.The primary study endpoint was progression-free survival(PFS).METHODS Retrospective analysis was conducted on the clinical data of patients with advanced PMP who received Bev+CTX+OXA regimen(bevacizumab 7.5 mg/kg ivgtt d1,oxaliplatin 130 mg/m2 ivgtt d1 and cyclophosphamide 500 mg/m2 ivgtt d1,q3w)in our center from December 2015 to December 2020.Objective response rate(ORR),disease control rate(DCR)and incidence of adverse events were evaluated.PFS was followed up.Kaplan-Meier method was used to draw survival curve,and log-rank test was used for comparison between groups.Multivariate Cox proportional hazards regression model was used to analyze the independent influencing factors of PFS.RESULTS A total of 32 patients were enrolled.After 2 cycles,the ORR and DCR were 3.1%and 93.7%,respectively.The median follow-up time was 7.5 mo.During the follow-up period,14 patients(43.8%)had disease progression,and the median PFS was 8.9 mo.Stratified analysis showed that the PFS of patients with a preoperative increase in CA125(8.9 vs 2.1,P=0.022)and a completeness of cytoreduction score of 2-3(8.9 vs 5.0,P=0.043)was significantly longer than that of the control group.Multivariate analysis showed that a preoperative increase in CA125 was an independent prognostic factor for PFS(HR=0.245,95%CI:0.066-0.904,P=0.035).CONCLUSION Our retrospective assessment confirmed that the Bev+CTX+OXA regimen is effective in second-or posterior-line treatment of advanced PMP and that adverse reactions can be tolerated.A preoperative increase in CA125 is an independent prognostic factor of PFS.

Massive bleeding from a gastric artery pseudoaneurysm in hepatocellular carcinoma treated with atezolizumab plus bevacizumab: A case report

BACKGROUND The combination of atezolizumab(ATZ)and bevacizumab(BVZ)was approved as first-line systemic therapy for advanced hepatocellular carcinoma(HCC)owing to its superior rates of response and patient survival.However,ATZ+BVZ is associated with increased risk of upper gastrointestinal(GI)bleeding,including arterial bleeding,which is rare and potentially fatal.We present a case of massive upper GI bleeding from a gastric pseudoaneurysm in a patient with advanced HCC who had been treated with ATZ+BVZ.CASE SUMMARY A 67-year-old man presented with severe upper GI bleeding after atezolizumab(ATZ)+bevacizumab(BVZ)therapy for HCC.Endoscopy failed to detect the bleeding site.Digital subtraction angiography revealed a gastric artery pseudoaneurysm and contrast extravasation from the inferior splenic artery and a branch of the left gastric artery.Successful hemostasis was achieved with embolization.CONCLUSION HCC patients who have been treated with ATZ+BVZ should be followed for 3 to 6 mo to monitor for development of massive GI bleeding.Diagnosis may require angiography.Embolization is an effective treatment.

Successful re-challenge of PD-1 inhibitors in combination with bevacizumab and pemetrexed for multiple primary NSCLC progressing on prior PD-1 inhibitor therapy:one case report

Lung cancer is a malignant tumor with high incidence and mortality rates in China and worldwide.Approximately 10%of these diseases are caused by multiple primary non-small cell lung cancers(NSCLC).Traditional antitumor therapies,such as chemotherapy,radiotherapy,and targeted therapy,have limited efficacy in the treatment of advanced synchronous multiple primary NSCLC.Immunotherapy is considered the standard of care for advanced or recurrent NSCLC,however,approximately 60%of patients develop primary or secondary resistance to treatment.There are no standard recommendations for overcoming immune resistance.We describe a case of simultaneous multiple primary NSCLC in a patient who received programmed death factor-1(PD-1)inhibitor monotherapy and developed brain metastases.After receiving second-line treatment with a combination of another PD-1 inhibitor,pemetrexed,and bevacizumab,the patient achieved complete remission,although they experienced grade 3 immune-related adverse reactions.Immune re-challenge is safe and feasible,and choosing a synergistic combination regimen is one of the options to overcome immune resistance.A larger sample size is needed to confirm the effectiveness and safety of this strategy in patients with NSCLC resistant to prior PD-1 inhibitors.

基于BEV视角的多传感融合3D目标检测

3D目标检测是自动驾驶在道路环境感知任务中的重要环节,现有主流框架通过搭载多种感知设备获取多模态的数据信息来实现多传感融合检测;传统相机与激光雷达的传感器融合过程中存在几何失真,以及信息优先级不对等,导致传感融合的3D目标检测性能不足;对此,提出了一种基于鸟瞰视角(BEV)的多传感融合3D目标检测算法;利用提升-展开-投射(LSS)方式,获取图像的潜在深度分布建立图像在BEV空间下的特征;采用PV-RCNN的集合抽象法建立点云在BEV空间下的特征;该算法在统一的BEV共享空间中设计了低复杂度的特征编码网络融合多模态特征实现3D目标检测;实验结果表明,所提出的算法在检测精度上相较于纯激光方法提升4.8%,相较于传统的融合方案减少了47%的参数,并保持了相近的精度,较好地满足了自动驾驶系统道路环境感知任务的检测要求。

基于自动泊车的BEV系统研究

结合自动驾驶鸟瞰图(Bird's Eye View,BEV)项目案例,针对基于自动泊车系统的BEV算法开展研究。BEV是端到端的,由神经网络将图像信息从图像空间转换至BEV空间的技术。与传统图像空间感知相比,BEV感知可将多个传感器采集的数据输入到同一空间进行处理,有效避免误差叠加。系统采用环视鱼眼摄像机,通常用于自动驾驶中的近距离感知,车辆四面的4个鱼眼摄像头足以覆盖车辆周围360°的范围,捕捉整个近距离区域,将摄像头感知画面直接传至人工智能(Artificial Intelligence,AI)算法中,生成鸟瞰视角的3D空间,最终研发完成具有自动泊车、自动驾驶功能的BEV系统。

Bevacizumab(Avastin)对眼科疾病的治疗作用

贝代单抗(bevacizumab)是近几年出现的重组单克隆抗体,通过抑制血管内皮生长因子(VEGF)达到抑制新生血管生成的作用。在眼科中,对于角膜、虹膜、脉络膜、视网膜的新生血管及年龄相关性黄斑变性、黄斑水肿等疾病的治疗具有很可观的应用前景。

Bevacizumab玻璃体内注射联合视网膜光凝及冷凝治疗新生血管性青光眼

目的观察Bevacizumab玻璃体内注射联合视网膜光凝或前部视网膜冷凝治疗新生血管性青光眼的临床疗效。方法31例(31眼)新生血管性青光眼患者接受治疗。31眼玻璃体内注射0.05 mL Bevacizumab后行视网膜光凝,6眼因屈光间质混浊予以后极部视网膜光凝术后行巩膜外冷凝,术后随访6个月,观察眼压、视力及虹膜新生血管变化。结果虹膜表面新生血管22例术后3 d完全消退,9例明显变细;术后7 d后完全消退。术后1周、1个月、3个月、6个月平均眼压分别为23.68 mmHg(1 kPa=7.5 mmHg)、22.35 mmHg、18.27 mmHg、16.53 mmHg。术后1个月,23例视力提高,8例视力无变化,术前术后最佳矫正视力比较,差异均有统计学意义(均为P<0.05)。23例眼压稳定,5例应用噻吗心胺、派立明滴眼后眼压维持在正常范围,3例眼压未控制,其中1例因无光感行睫状体冷冻术,2例行青光眼阀植入后眼压稳定。结论 Bevacizumab玻璃体内注射联合视网膜光凝及冷凝治疗新生血管性青光眼能改善视网膜缺血状态,有效降低眼压,并发症少,为目前治疗新生血管性青光眼安全、有效的治疗方法。

OCT对玻璃体腔内注射Bevacizumab治疗脉络膜新生血管的疗效评价

目的探讨光学相干断层扫描(OCT)在玻璃体腔内注射Bevacizumab治疗脉络膜新生血管(CNV)疗效评价中的作用。方法CNV患者23例(24眼),其中年龄相关性黄斑变性(AMD)19例(20眼),病理性近视(PM)4例(4眼)。所有患者每月玻璃体内注射Bevacizumab 2.5 mg/次,连续治疗3次;治疗前后检查视力,应用OCT观察黄斑区视网膜形态,并对黄斑区视网膜神经上皮层厚度进行测量。随访期1～7个月。结果24眼接受75次治疗(平均3.1次),无1眼发生不良反应。治疗后17眼(70.8%)早期治疗糖尿病视网膜病变研究(ETDRS)视力提高8个字符以上,7眼(29.2%)视力稳定。OCT检查显示,黄斑中心凹视网膜神经上皮层厚度治疗前为(355.83±113.21)μm,治疗后为(258.46±74.55)μm,差异有统计学意义(P<0.01);治疗后所有患眼黄斑区视网膜水肿均明显减轻,黄斑囊样水肿(4眼)、视网膜下积液(7眼)和色素上皮脱离(3眼)都有改善甚至消失。结论玻璃体内注射Bevacizumab治疗AMD和PM引起的CNV近期疗效良好;OCT具有准确、客观、方便、可重复性和定量的特点,为临床随访和评估抗血管内皮生长因子-A治疗效果提供了客观的指标。

Bevacizumab辅助治疗新生血管性青光眼

目的:观察玻璃体腔注射bevacizumab(intravitreal bevacizumab,IVB),联合玻璃体切除、视网膜光凝+小梁切除术治疗新生血管性青光眼(neovascular glaucoma,NVG)临床疗效。方法:对2007-06/2009-06在我院眼科收治由于视网膜中央静脉阻塞(缺血型)继发新生血管性青光眼患者27例27眼,角膜缘后3.5mm玻璃体腔注射bevacizumab0.05mL/1.25mg,治疗后7d进行玻璃体切除、视网膜光凝+小梁切除。术后随访12mo,观察视力、虹膜及房角新生血管及眼压情况。结果:IVB 7d后,25眼虹膜表面、房角新生血管消失(93%)。2眼新生血管明显变细,但未完全消退(7%)。IVB治疗前平均眼压(55.81±4.65)mmHg,治疗后7d平均眼压(42.07±7.49)mmHg,两者眼压比较虽然差异有显著性(t=14.973,P<0.01),但局部应用降眼压药后眼压仍高于正常范围(28～50)mmHg。玻璃体切除、视网膜光凝+小梁切除术后1,3,6,9,12mo,平均眼压分别为(14.85±4.56;16.70±3.73;20.04±6.58;19.30±4.74;19.67±4.12)mmHg,与IVB后7d平均眼压比较差异均有显著性(P<0.01)。手术后眼压控制完全成功22眼(82%),部分成功3眼(11%),眼压未控制2眼(7%)。27眼视力均保持稳定或稍有增进。结论:IVB辅助手术治疗NVG,可以促进虹膜、房角、视网膜新生血管迅速消退,有效的控制眼压,降低手术并发症,提高了手术的成功率,同时进行原发病的治疗远期效果明显提高。

翼状胬肉术中应用bevacizumab与丝裂霉素C的比较

目的:比较研究翼状胬肉手术联合bevacizumab与丝裂霉素C的临床疗效及其术后复发率和并发症情况。方法:将2010-01/2012-01浙江省中西医结合医院眼科住院的翼状胬肉患者80例随机分为两组,A组40例采用手术联合球结膜下注射bevacizumab治疗,B组40例采用手术联合术中丝裂霉素C贴敷治疗,随访1a,比较评估两组的临床疗效及其术后复发率和并发症。结果:A组治愈率为88%,B组为85%,两组临床疗效比较无显著差异(χ2=0.105,P>0.05);A组术后复发率为12%,B组为15%,两组术后复发率比较无显著差异(χ2=0.105,P>0.05);A组术后并发症发生率为2%,B组为18%,两组术后并发症比较有显著差异(χ2=4.517,P<0.05)。结论:翼状胬肉手术联合bevacizumab与丝裂霉素C的临床疗效显著,术后复发率低,但联合bevacizumab并发症较少。