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前哨淋巴结显像剂^(99)Tc^m-IT-Rituximab的制备及其定位性能 被引量:13
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作者 王雪鹃 杨志 +3 位作者 林保和 徐冰 张岩 张梅颖 《中华核医学杂志》 CAS CSCD 北大核心 2006年第4期226-230,共5页
目的研究前哨淋巴结(SLN)显像剂 ^(99)Tc^m-亚氨基噻吩(IT)-美罗华(Rituximab)的标记方法及其定位效应。方法采用2-IT 作为双功能连接剂,制备 ^(99)Tc^m-IT-Rituxinlab,确定最佳反应条件,评价标记抗体分子完整性及生物活性。观察比较 ^(... 目的研究前哨淋巴结(SLN)显像剂 ^(99)Tc^m-亚氨基噻吩(IT)-美罗华(Rituximab)的标记方法及其定位效应。方法采用2-IT 作为双功能连接剂,制备 ^(99)Tc^m-IT-Rituxinlab,确定最佳反应条件,评价标记抗体分子完整性及生物活性。观察比较 ^(99)Tc^m-IT-Rituximab 及 ^(99)Tc^m-硫胶体(SC)2种示踪剂在小鼠淋巴结中的定位性能。将 ^(99)Tc^m-IT-Rituximab 作为显像剂,对10例乳腺癌患者行乳腺癌 SLN动态显像。结果 2-IT 与 Rituximab 连接的最佳物质的量比为10:1,4℃反应45 min 后,每分子抗体螯合上的游离巯基数平均为2.1个。IT-Rituximab 分子保持完整、免疫活性保留完全。^(99)Tc^m-IT-Ritux-imab 的标记率>90%,其与 B 淋巴瘤细胞株 Raji 细胞的结合率为69.4%。动物显像结果显示 ^(99)Tc^m-IT-Rituximab 可清晰定位小鼠 SLN,注射后30 min~24 h SLN 均可显影,2 h 后 SLN 显影清晰,至24 h未见次级淋巴结显影。动物体内分布数据显示 ^(99)Tc^m-IT-Rituximab 定位性能明显优于 ^(99)Tc^m-SC,24 h时 SLN 百分注射剂量率(%ID)为4.49%,次级及第3级淋巴结基本无摄取,24 h 注射点滞留率为22.14% 结论该标记方法简单,标记率高;^(99)Tc^m-IT-Rituximab 在 SLN 中定位性能良好,是一种潜在的新型 SLN 显像剂。 展开更多
关键词 it—rituximab 同位素标记 动物 实验 乳腺肿瘤 淋巴结 放射性核素显像
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Comparison of inebilizumab or rituximab in addition to glucocorticoid therapy for neuromyelitis optica spectrum disorders
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作者 Chu-Yuan Lou Yong Wang +4 位作者 Jia-Yuan Xing Teng Ma Lei Tao Xiao-Tang Wang Run-Sheng Wang 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第6期1073-1078,共6页
AIM:To investigate the short-term efficacy and safety of inebilizumab for neuromyelitis optica spectrum disorders(NMOSD).METHODS:A total of 33 patients with NMOSD treated with inebilizumab(Group INB,n=15)or rituximab(... AIM:To investigate the short-term efficacy and safety of inebilizumab for neuromyelitis optica spectrum disorders(NMOSD).METHODS:A total of 33 patients with NMOSD treated with inebilizumab(Group INB,n=15)or rituximab(Group RTX,n=18)in addition to high-dose glucocorticoids were included.Both groups underwent hormone shock therapy during the acute phase.Subsequently,Group INB received inebilizumab injections during the remission phase,while Group RTX received rituximab injections.A comparison of aquaporins 4(AQP4)titer values,peripheral blood B lymphocyte counts,and visual function recovery was conducted before and 8wk after treatment.Additionally,adverse reactions and patient tolerability were analyzed after using inebilizumab treatment regimes.RESULTS:Following inebilizumab treatment,there was a significantly improvement in the visual acuity of NMOSD patients(P<0.05),accompanied by a notable decrease in AQP4 titer values and B lymphocyte ratio(P<0.05).Moreover,inebilizumab treatment showed a partial effect in preventing optic nerve atrophy(P<0.05).However,there were no significant differences in other therapeutic effects compared to rituximab,which has previously demonstrated substantial therapeutic efficacy(P>0.05).Furthermore,inebilizumab exhibited higher safety levels than that of rituximab injections.CONCLUSION:The combination of inebilizumab and high-dose glucocorticoids proves to be effective.In comparison to rituximab injections,inebilizumab displays better tolerance and safety.Moreover,it demonstrates a partial effect in preventing optic nerve atrophy.Thus,it stands as an effective method to reduce the disability rates and improve the daily living ability of patients with NMOSD. 展开更多
关键词 neuromyelitis optica spectrum disorders inebilizumab rituximab GLUCOCORTICOIDS
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Bendamustine and rituximab as frontline therapy in extranodal marginal zone lymphoma:a single-institution experience
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作者 CONSTANTINE N.LOGOTHETIS NATHAN P.HORVAT +8 位作者 TONY KURIAN CELESTE BELLO JULIO CHAVEZ LEIDY ISENALUMHE BIJAL SHAH LUBOMIR SOKOL HAYDER SAEED JAVIER PINILLA SAMEH GABALLA 《Oncology Research》 SCIE 2024年第6期1031-1036,共6页
Extranodal marginal zone lymphoma(EMZL)encompasses 70%of cases of marginal zone lymphoma.Frontline bendamustine and rituximab(BR)were derived from trials involving other indolent non-Hodgkin’s lymphomas.Only one tria... Extranodal marginal zone lymphoma(EMZL)encompasses 70%of cases of marginal zone lymphoma.Frontline bendamustine and rituximab(BR)were derived from trials involving other indolent non-Hodgkin’s lymphomas.Only one trial has evaluated frontline BR prospectively in EMZL.This retrospective study reports outcomes among EMZL patients receiving frontline BR.Twenty-five patients were included with a median age of 69 years(40–81).Five(20.0%)patients had stage Ⅰ/Ⅱ disease,and 20(80.0%)had stage Ⅲ/Ⅳ disease.The median number of cycles was 6.0(3.0–6.0).Maintenance rituximab was administered to 10(41.7%)individuals.Overall response rate(ORR)was 100.0%(60.0%complete response,40.0%partial response).Medians of overall survival and progression-free survival were not reached.The estimated 2-year progression-free survival was 85.2%and overall survival was 100.0%.Four(16.6%)patients had infections related to treatment;3(12.0%)transformed to diffuse large B-cell lymphoma;5(20.8%)had a relapse or progression of EMZL;and 3(12.0%)died unrelated to BR.BR is an efficacious and well-tolerated front-line regimen for EMZL with response data consistent with existing literature. 展开更多
关键词 Extranodal marginal zone lymphoma BENDAMUSTINE rituximab Front-line therapy
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Rituximab Induced Vasculitis: Dose the Antigen-Antibody Complex of Rituximab Play a Role in Developing Leukocytoclastic Vasculitis?—A Case Report and Review of the Literature
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作者 Ahmed A. AlTaroti Zahra Z. AlZahir Salah Abohelaika 《Journal of Biosciences and Medicines》 2024年第9期89-94,共6页
Rituximab is a monoclonal antibody that targets CD20, which is a specific B-cell surface antigen. It was the first monoclonal antibody that was approved for the treatment of non-Hodgkin lymphoma, rheumatoid arthritis,... Rituximab is a monoclonal antibody that targets CD20, which is a specific B-cell surface antigen. It was the first monoclonal antibody that was approved for the treatment of non-Hodgkin lymphoma, rheumatoid arthritis, and other cutaneous lymphoid malignancies. There are many off-label uses of rituximab, such as systemic lupus erythematosus, autoimmune hemolytic anemia, multiple sclerosis, graft-versus-host disease, chronic lymphocytic leukemia, and chronic immune-mediated thrombocytopenia. Among the rare side effects associated with rituximab treatment is vasculitis, more specifically, leukocytoclastic vasculitis. Here, we describe a 21-year-old Saudi female with leukocytoclastic vasculitis occurring three months after treatment with rituximab. 展开更多
关键词 Rheumatoid Arthritis rituximab VASCULITIS Leukocytoclastic Vasculitis
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Outcomes of a 12-month course of early and late rituximab BCD020 biosimilar administration in juvenile systemic lupus erythematosus:A retrospective study
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作者 Elvira Kalashnikova Eugenia Isupova +9 位作者 Ekaterina Gaidar Natalia Lubimova Lyubov Sorokina Irina Chikova Maria Kaneva Rinat Raupov Olga Kalashnikova Damir Aliev Inna Gaydukova Mikhail Kostik 《World Journal of Nephrology》 2024年第4期81-90,共10页
BACKGROUND Juvenile systemic lupus erythematosus(SLE)is a severe,life-threatening disease.However,the role of rituximab in managing juvenile SLE remains undefined,although early biological intervention may improve dis... BACKGROUND Juvenile systemic lupus erythematosus(SLE)is a severe,life-threatening disease.However,the role of rituximab in managing juvenile SLE remains undefined,although early biological intervention may improve disease outcomes.AIM To assess the differences in the outcomes of different types of rituximab administration(early and late).METHODS In this retrospective cohort study,the information of 36 children with SLE with administration(LRA)was analyzed.We compared initial disease characteristics at onset,at baseline(start of rituximab),and at the end of the study(EOS)at 12 months,as well as outcomes and treatment characteristics.RESULTS The main differences at baseline were a higher daily median dose of corticosteroids,increased MAS frequency,and a higher Systemic Lupus Erythematosus Disease Activity Index(SLEDAI)in the ERA group.No differences in the main SLE outcomes between groups at the EOS were observed.The part of lupus nephritis patients who achieved remission changed from 44%to 31%in ERA and 32%to 11%in the LRA group.Patients with ERA had a shorter time to achieve low daily corticosteroid dose(≤0.2 mg/kg)at 1.2(0.9;1.4)years compared to 2.8(2.3;4.0)years(P=0.000001)and higher probability to achieve this low dose[hazard ratio(HR)=57.8(95%confidence interval(CI):7.2-463.2),P=0.00001 and remission(SLEDAI=0);HR=37.6(95%CI:4.45-333.3),P=0.00001].No differences in adverse events,including severe adverse events,were observed.CONCLUSION ERA demonstrated a better steroid-sparing effect and a possibility of earlier remission or low disease activity,except for lupus nephritis.Further investigations are required. 展开更多
关键词 Systemic lupus erythematosus rituximab rituximab BCD020 biosimilar Anti-CD-20 BIOLOGIC Children
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Review of plasma exchange and rituximab for prevention of recurrent focal segmental glomerulosclerosis after a prior graft loss
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作者 Sophie Gharaei Hashim Abbas Durga Anil Kanigicherla 《World Journal of Transplantation》 2024年第4期133-139,共7页
BACKGROUND Focal segmental glomerulosclerosis(FSGS)often recurs after transplantation,leading to graft dysfunction and graft loss.Patients who have lost prior grafts due to recurrence are at particularly high risk of ... BACKGROUND Focal segmental glomerulosclerosis(FSGS)often recurs after transplantation,leading to graft dysfunction and graft loss.Patients who have lost prior grafts due to recurrence are at particularly high risk of re-recurrence in subsequent grafts.Rituximab and plasma exchange have been used pre-emptively to prevent post-transplant recurrence.However,the efficacy of such preventative measures remains unclear.AIM To investigate the outcomes of preventative rituximab and plasma exchange for recurrent FSGS in transplant recipients after prior graft loss.METHODS We conducted a systematic review of 11 studies with 32 patients who had experienced prior graft loss due to post-transplant FSGS recurrence and were treated with either pre-emptive plasma exchange alone,rituximab alone,or a combination of both.RESULTS Overall,47%of the 32 patients experienced recurrence despite prophylactic treatment.Re-recurrence was seen in 25%(1/4)with pre-emptive rituximab alone,and 45%recurrence(9/20)with plasma exchange alone.Re-recurrence was noted in 63%with the use of combined plasma exchange and rituximab.CONCLUSION There is a paucity of available evidence in the literature to draw clear conclusions on the benefits of pre-emptive measures to prevent FSGS re-recurrence.The small sample sizes and variations in protocols call for larger and controlled studies to serve this patient population at high risk of recurrence and graft loss. 展开更多
关键词 Focal segmental glomerulosclerosis Glomerular disease Plasma exchange rituximab TRANSPLANTATION
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BCD020 rituximab bioanalog compared to standard treatment in juvenile systemic lupus erythematosus: The data of 12 months casecontrol study
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作者 Elvira Kalashnikova Eugenia Isupova +11 位作者 Ekaterina Gaidar Lyubov Sorokina Maria Kaneva Vera Masalova Margarita Dubko Tatiana Kornishina Natalia Lubimova Ekaterina Kuchinskaya Irina Chikova Rinat Raupov Olga Kalashnikova Mikhail Kostik 《World Journal of Clinical Pediatrics》 2024年第1期52-61,共10页
BACKGROUND Systemic lupus erythematosus(SLE)is the most frequent and serious systemic connective tissue disease.Nowadays there is no clear guidance on its treatment in childhood.There are a lot of negative effects of ... BACKGROUND Systemic lupus erythematosus(SLE)is the most frequent and serious systemic connective tissue disease.Nowadays there is no clear guidance on its treatment in childhood.There are a lot of negative effects of standard-of-care treatment(SOCT),including steroid toxicity.Rituximab(RTX)is the biological B-lymphocyte-depleting agent suggested as a basic therapy in pediatric SLE.AIM To compare the benefits of RTX above SOCT.METHODS The data from case histories of 79 children from the Saint-Petersburg State Pediatric Medical University from 2012 to 2022 years,were analyzed.The diagnosis of SLE was established with SLICC criteria.We compared the outcomes of treatment of SLE in children treated with and without RTX.Laboratory data,doses of glucocorticosteroids,disease activity measured with SELENA-SLEDAI,RESULTS Patients,treated with RTX initially had a higher degree of disease activity with prevalence of central nervous system and kidney involvement,compared to patients with SOCT.One year later the disease characteristics became similar between groups with a more marked reduction of disease activity(SELENA-SLEDAI activity index)in the children who received RTX[-19 points(17;23)since baseline]compared to children with SOCT[-10(5;15.5)points since baseline,P=0.001],the number of patients with active lupus nephritis,and daily proteinuria.During RTX therapy,infectious diseases had three patients;one patient developed a bi-cytopenia.CONCLUSION RTX can be considered as the option in the treatment of severe forms of SLE,due to its ability to arrest disease activity compared to SOCT. 展开更多
关键词 Systemic lupus erythematosus CHILDREN rituximab Anti-B-cell therapy GLUCOCORTICOSTEROIDS
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Clinical Observation of Serum Anti-PLA2R Antibody Levels in the Treatment of Idiopathic Membranous Nephropathy with Rituximab
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作者 Mengdi Guo 《Journal of Clinical and Nursing Research》 2024年第1期238-243,共6页
Objective:To investigate the efficacy of rituximab in the treatment of idiopathic membranous nephropathy with varying levels of serum phospholipase A2 receptor antibodies.Methods:A total of 137 patients with idiopathi... Objective:To investigate the efficacy of rituximab in the treatment of idiopathic membranous nephropathy with varying levels of serum phospholipase A2 receptor antibodies.Methods:A total of 137 patients with idiopathic membranous nephropathy admitted to Beijing Sixth Hospital were selected.Based on their blood PLA2R antibody levels before rituximab treatment,patients were categorized into the PLA2R antibody positive group(n=94)and the PLA2R antibody negative group(n=43).They were followed up for at least 1 year,during which the efficacy,measured through 24-hour urine protein quantification and serum albumin levels,were compared between the two groups before and after treatment.Results:After 3 months of treatment,there was no significant difference in the quantitative levels of 24-hour urine protein between the two groups(P>0.05).However,after 6 and 12 months of treatment,there was a significant difference in the levels of 24-hour urine protein between the two groups(P<0.05).Additionally,after 3 months of treatment,there was a notable difference in the serum albumin levels between the two groups(P<0.05).However,after 6 and 12 months of treatment,there was no significant difference in serum albumin levels between the two groups(P>0.05).Analysis of complications in the two groups revealed that in the positive group,9 individuals experienced thrombosis,5 had infections,and 11 developed acute kidney injury(AKI).In contrast,in the negative group,5 individuals had thrombosis,2 had infections,and 3 developed AKI.There was no statistically significant difference in complications between the two groups(P>0.05).Conclusion:Serum anti-PLA2R antibody levels provide valuable insights into the clinical observation of rituximab treatment for idiopathic membranous nephropathy.They aid in understanding the disease’s pathogenesis,evaluating treatment efficacy,and predicting disease prognosis. 展开更多
关键词 Serum anti-PLA2R rituximab treatment Idiopathic membranous nephropathy
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^(177)Lu标记单克隆抗体Rituximab及其初步生物学评价 被引量:2
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作者 马秀凤 张君丽 +4 位作者 李洪玉 梁积新 杨云 杨春慧 杜进 《同位素》 CAS 2014年第2期98-103,共6页
以CHX-A″-DTPA和p-SCN-Bz-DTPA为双功能螯合剂,分别对Rituximab进行偶联,用^(177)Lu进行标记,制备^(177)Lu-Rituximab。在优化条件下,^(177)Lu对单抗偶联物CHX-A″-DTPA-Rituximab和p-SCN-Bz-DTPA-Rituximab的标记率和放化纯度均大于99... 以CHX-A″-DTPA和p-SCN-Bz-DTPA为双功能螯合剂,分别对Rituximab进行偶联,用^(177)Lu进行标记,制备^(177)Lu-Rituximab。在优化条件下,^(177)Lu对单抗偶联物CHX-A″-DTPA-Rituximab和p-SCN-Bz-DTPA-Rituximab的标记率和放化纯度均大于99%。室温及37℃条件下,^(177)Lu-Rituximab在各种测试体系中均显示良好的体外稳定性。在正常小鼠体内的生物分布结果显示,^(177)Lu-Rituximab发生了分解,游离的^(177)Lu在骨中形成较高浓集。^(177)Lu-p-SCN-Bz-DTPA-Rituximab比^(177)Lu-CHX-A″-DTPA-Rituximab的体内清除快,而且游离^(177)Lu的骨摄取低,结果表明,p-SCN-Bz-DTPA更适于作为双功能螯合剂用于单抗的^(177)Lu标记。 展开更多
关键词 rituximab 双功能螯合剂 ^177Lu 生物分布
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^(131)I-rituximab对B细胞淋巴瘤细胞生物学效应的实验研究 被引量:1
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作者 魏莉 罗荣城 +3 位作者 张军一 严晓 方永鑫 费丽华 《南方医科大学学报》 CAS CSCD 北大核心 2006年第2期211-213,共3页
目的研究131I标记的rituximab对CD20高表达的B细胞淋巴瘤细胞的生物学效应,为放射免疫导向治疗提供实验依据。方法 IODO-GEN法将131I标记于抗CD20单抗rituximab,用Annexin Ⅴ-FITC/PI双染法检测131I-rituximab对 Raji细胞的诱导凋亡作... 目的研究131I标记的rituximab对CD20高表达的B细胞淋巴瘤细胞的生物学效应,为放射免疫导向治疗提供实验依据。方法 IODO-GEN法将131I标记于抗CD20单抗rituximab,用Annexin Ⅴ-FITC/PI双染法检测131I-rituximab对 Raji细胞的诱导凋亡作用,PI染色法检测细胞周期分布。结果 Annexin Ⅴ-FITC/PI双染法检测凋亡率:131I-rituximab组凋亡率为51.99%,131I组为42.71%,rituximab组为29.42%,对照组为26.17%。对照组和rituximab组凋亡率明显低于131I 组和131I-rituximab组(P<0.05)。PI染色法对比各组的凋亡率(亚二倍体峰):131I-rituximab组细胞凋亡率为4.32%,131I组为 1.47%,rituximab组为1.39%,对照组仅0.37%,131I-rituximab组凋亡率明显高于其他各组(P<0.05)。131I-rituximab组Raji细胞周期发生变化,细胞大部分被阻滞于G1/G2期。结论 131I-rituximab能够调控Raji细胞的细胞周期并诱导其凋亡,从而抑制Raji细胞增殖。 展开更多
关键词 B细胞淋巴瘤 放射免疫治疗 碘放射性同位素 rituximab RAJI细胞 细胞凋亡
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特异性前哨淋巴结显像剂^(99)Tc^m-rituximab药盒的制备及生物评价 被引量:7
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作者 李艳 李囡 +2 位作者 翟士桢 王雪鹃 杨志 《同位素》 CAS 2011年第B12期85-89,共5页
采用2-巯基乙醇修饰Rituximab(利妥昔单克隆抗体),制得其冻干药盒。所制得的冻干药盒性质稳定,可在-20℃冷冻保存3个月以上。利用99 Tcm-葡庚糖酸钠(GH)交换法,标记冻干药盒得到99 Tcm-ritux-imab,标记率和放化纯度均大于90%。生物分布... 采用2-巯基乙醇修饰Rituximab(利妥昔单克隆抗体),制得其冻干药盒。所制得的冻干药盒性质稳定,可在-20℃冷冻保存3个月以上。利用99 Tcm-葡庚糖酸钠(GH)交换法,标记冻干药盒得到99 Tcm-ritux-imab,标记率和放化纯度均大于90%。生物分布结果显示:SD大鼠经前脚掌皮下注射99 Tcm-rituximab后,前哨淋巴结的摄取值在1~4h内逐渐增加,在4h时达到(2.14±0.46)%ID,前哨淋巴结与注射点的放射性摄取比在4h时达到最大(14.80%±2.11%),且在18h时,这一比值基本保持不变。SPECT显像结果表明,在30min~18h内,大鼠的前哨淋巴结清晰可见,无次级淋巴结显影。本研究提供了一种特异性前哨淋巴结显像剂的药盒化制备方法,该方法操作简便,性能稳定,便于在临床推广应用。 展开更多
关键词 99Tcm-rituximab 前哨淋巴结 显像剂
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前哨淋巴结示踪剂^(99)Tc^m-IT-Rituximab的制备及初步动物实验研究 被引量:5
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作者 王雪鹃 王荣福 +4 位作者 杨志 林保和 徐冰 张岩 张梅颖 《中国医学影像技术》 CSCD 北大核心 2006年第1期139-143,共5页
目的研究新型特异性前哨淋巴结(SLN)示踪剂^(99)Tc^m-IT-Rituximab的定位效应。方法采用2-亚氨基噻吩(2-IT)修饰法制备^(99)Tc^m-IT-Rituximab,并评价其定位SLN的生物性能,监测注射显像剂的化学剂量及注射体积对SLN摄取的影响。结果^(99... 目的研究新型特异性前哨淋巴结(SLN)示踪剂^(99)Tc^m-IT-Rituximab的定位效应。方法采用2-亚氨基噻吩(2-IT)修饰法制备^(99)Tc^m-IT-Rituximab,并评价其定位SLN的生物性能,监测注射显像剂的化学剂量及注射体积对SLN摄取的影响。结果^(99)Tc^m-IT-Rituximab标记率大于90%,分子保持完整。^(99)Tc^m-IT-Rituximab可清晰定位小鼠SLN,注射后30min到24h SLN均可显影,未见次级淋巴结显影。注药后24h SLNID%值为4.49%,次级及第三级淋巴结ID%摄取率比值相当于本底,24h注射点滞留率为22.14%。示踪剂的化学量及注射体积均影响SLN显像。随着二者的增加,SLN%ID值逐渐减少,次级及第三级淋巴结%ID值均逐渐上升。结论^(99)Tc^m-IT-Rituximab的标记方法简单,研究结果表明其具有潜在的临床应用价值。 展开更多
关键词 前哨淋巴结 示踪剂 99^Tc^m-IT-rituximab 淋巴显像
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Rituximab的碘标记方法及其在正常小鼠体内的生物分布 被引量:1
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作者 杜延荣 方红娟 +1 位作者 陈黎波 李方 《同位素》 CAS 北大核心 2007年第2期73-76,82,共5页
采用N-溴代琥珀酰亚胺(NBS)方法对Rituximab(美罗华)进行标记,并优化标记条件。系统考察了反应时间、NBS用量、反应温度、反应体积、pH值及KI的加入等条件对125I-Rituximab标记率的影响,用ITLC-SG测定标记率和放化纯度。确定最佳条件为... 采用N-溴代琥珀酰亚胺(NBS)方法对Rituximab(美罗华)进行标记,并优化标记条件。系统考察了反应时间、NBS用量、反应温度、反应体积、pH值及KI的加入等条件对125I-Rituximab标记率的影响,用ITLC-SG测定标记率和放化纯度。确定最佳条件为:反应时间2~3 min、pH 7.0、室温、反应体积80μL为反应最优条件。在最佳条件下,5次标记实验标记物的放化纯度为93.9%±1.6%。采用体外结合实验测定储存不同时间131I-Rituximab的免疫活性,结果表明随着131I-Rituximab储存时间的增加免疫活性下降。正常小鼠静脉注射131I-Rituximab后体内分布显示血液中放射性分布较高,并可持续6 d,表明131I-Rituximab体内稳定。异常毒性实验结果表明131I-Rituximab毒性低。 展开更多
关键词 rituximab 标记方法 生物分布
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Rituximab对紫杉醇诱导人B淋巴瘤细胞株凋亡的增敏作用 被引量:2
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作者 张红雨 管忠震 +2 位作者 黄岩 张星 林桐榆 《肿瘤防治研究》 CAS CSCD 北大核心 2008年第12期849-853,共5页
目的基于对CHOP(环磷酰胺、阿霉素、长春新碱和强的松)联合化疗方案治疗侵袭性淋巴瘤疗效的不尽人意,本文研究利妥昔单抗(Rituximab)对新一代化疗药物Paclitaxel的化疗增敏作用,并探讨其可能的作用机制。方法(1)体外培养Daudi、Ramos、N... 目的基于对CHOP(环磷酰胺、阿霉素、长春新碱和强的松)联合化疗方案治疗侵袭性淋巴瘤疗效的不尽人意,本文研究利妥昔单抗(Rituximab)对新一代化疗药物Paclitaxel的化疗增敏作用,并探讨其可能的作用机制。方法(1)体外培养Daudi、Ramos、Namalwa和Raji细胞,采用XTT法测定细胞增殖抑制率:以药物浓度为横坐标,抑制率为纵坐标绘出细胞增殖抑制曲线,比较单药和两药协同作用曲线,若联合作用曲线左移表示有协同作用,右移表示有拮抗作用。(2)Western blot测定:Daudi、Ramos、Raji和Na-malwa细胞经Rituximab20μg/ml作用24小时后检测抗凋亡蛋白Bcl-2的表达情况。结果(1)XTT法测定Paclitaxel单药及与Rituximab联合作用对各细胞株增殖抑制率:对Daudi、Namalwa、Ramos和Raji细胞株,Rituximab对Paclitaxel的细胞毒作用有明显的增敏作用;(2)Western blot测定:在Namalwa和Raji细胞株中,经Rituximab作用24小时后,可见Bcl-2蛋白表达下调。结论(1)单药Rituximab对Paclitaxel有明显的化疗增敏作用。(2)在Namalwa和Raji细胞株,经Rituximab作用24小时后可见Bcl-2表达下调,可能是Rituximab增敏的机制之一。 展开更多
关键词 美罗华 B-淋巴瘤细胞株 增敏
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Rituximab—非霍奇金淋巴瘤靶向治疗的临床研究进展 被引量:2
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作者 何小慧 石远凯 《实用肿瘤杂志》 CAS 北大核心 2001年第2期79-81,共3页
关键词 非霍奇金淋巴瘤 治疗 CD20 rituximab基因
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Rituximab的作用机理与抗药机理 被引量:1
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作者 师明磊 胡显文 陈惠鹏 《中国肿瘤生物治疗杂志》 CAS CSCD 2004年第4期302-304,共3页
Rituximab是一种有效的治疗非霍奇金淋巴瘤的单抗药物,它定向作用于CD20抗原,主要通过ADCC、CDC和直接 效应杀伤肿瘤细胞。绝大多数肿瘤细胞都对ADCC有一定程度的敏感性,其强度决定于Fc段的种类与Fc受体的类型。CDC 可能是Rituximab在... Rituximab是一种有效的治疗非霍奇金淋巴瘤的单抗药物,它定向作用于CD20抗原,主要通过ADCC、CDC和直接 效应杀伤肿瘤细胞。绝大多数肿瘤细胞都对ADCC有一定程度的敏感性,其强度决定于Fc段的种类与Fc受体的类型。CDC 可能是Rituximab在体内杀伤肿瘤的最主要机制,不同肿瘤细胞对于CDC的敏感性大不相同,并与Rituximab的临床疗效相 关。CDC的强度受补体调节蛋白影响。Rituximab的直接效应主要是诱导凋亡等。Rituximab还通过致敏肿瘤细胞协助增强 传统细胞毒性药物的疗效。细胞因子对改善Rituximab的疗效也有一定作用。肿瘤细胞对Rituximab的耐受现象广泛存在。 这与细胞类型、肿瘤细胞所处的部位以及之前接受的治疗等多种因素有关。对于Rituximab的作用机理与抗药机理仍需更多 研究。 展开更多
关键词 rituximab 淋巴瘤 非霍奇金氏 作用机理 抗药机理
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Rituximab在非霍奇金淋巴瘤治疗中的作用 被引量:3
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作者 张效云 刘进军 《中国医药》 2007年第2期124-125,共2页
Rituximab,又称为美罗华,是第一个由美国FAD批准用于治疗非霍奇金淋巴瘤(Non—Hodgkin’s lymphoma,NHL)的单克隆抗体。Rituximab是基因工程人鼠嵌合型单克隆抗体,是由鼠Fab和人Fc构成,分子质量约45000。可特异地与B淋巴细胞表面... Rituximab,又称为美罗华,是第一个由美国FAD批准用于治疗非霍奇金淋巴瘤(Non—Hodgkin’s lymphoma,NHL)的单克隆抗体。Rituximab是基因工程人鼠嵌合型单克隆抗体,是由鼠Fab和人Fc构成,分子质量约45000。可特异地与B淋巴细胞表面的CD20抗原结合,并引发一系列作用,导致B淋巴细胞的死亡。Rituximab,不但可用于NHL的治疗,还可用于特发性血小板减少性紫癜、多发性骨髓瘤、慢性淋巴细胞白血病等多种免疫相关性疾病的治疗。现就Rituximab在NHL治疗中的作用作一综述。 展开更多
关键词 rituximab 非霍奇金淋巴瘤
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CD20靶向Cy7-Rituximab分子探针的制备及在小鼠活体荧光成像中的应用 被引量:2
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作者 林新峰 朱华 +1 位作者 洪业 杨志 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2013年第9期2139-2145,共7页
以B淋巴细胞表面CD20抗原靶向的单克隆抗体Rituximab为载体,通过共价键偶联荧光基团菁染料Cy7,获得了新型荧光分子探针Cy7-Rituximab.利用全光谱紫外-可见分光光度仪、SDS-聚丙烯酰胺凝胶电泳和基质辅助激光解析电离飞行时间质谱等对该... 以B淋巴细胞表面CD20抗原靶向的单克隆抗体Rituximab为载体,通过共价键偶联荧光基团菁染料Cy7,获得了新型荧光分子探针Cy7-Rituximab.利用全光谱紫外-可见分光光度仪、SDS-聚丙烯酰胺凝胶电泳和基质辅助激光解析电离飞行时间质谱等对该探针结构进行表征,并通过激光共聚焦显微镜观察了其在弥漫大B细胞淋巴瘤(DLBCL)细胞中的摄取情况.选用BALB/C裸鼠为模型,尾静脉注射Cy7-Rituximab,通过活体荧光成像系统观察了其在小鼠体内的分布情况.研究结果表明,修饰后的Cy7-Rituximab保持了原有抗体的免疫活性.活体荧光成像结果表明,在CD20高表达的脾脏部位监测到该分子探针的特异性浓集. 展开更多
关键词 光学影像探针 活体成像 CD20抗原 利妥昔单抗
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Rituximab在器官移植中的应用 被引量:1
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作者 程东瑞 季曙明 《肾脏病与透析肾移植杂志》 CAS CSCD 2006年第5期480-485,共6页
关键词 rituximab 器官移植
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前哨淋巴结显像剂^(99)Tc^m-rituximab体外特性和安全限度的实验研究 被引量:3
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作者 王雪鹃 张岩 +3 位作者 李艳 翟士桢 林保和 杨志 《同位素》 CAS 2011年第B12期90-94,共5页
用99 Tcm标记rituximab(美罗华)评价特异性前哨淋巴结(SLN)示踪剂99 Tcm-rituximab体外特性及其体内应用的安全性。采用聚丙烯酰胺凝胶电泳(SDS-PAGE)检测了99 Tcm-Rituximab的分子完整性;采用间接酶联免疫荧光分析(ELISA)及流式细胞术... 用99 Tcm标记rituximab(美罗华)评价特异性前哨淋巴结(SLN)示踪剂99 Tcm-rituximab体外特性及其体内应用的安全性。采用聚丙烯酰胺凝胶电泳(SDS-PAGE)检测了99 Tcm-Rituximab的分子完整性;采用间接酶联免疫荧光分析(ELISA)及流式细胞术检测了99 Tcm-rituximab的免疫活性;最后依据中华药典的要求行99 Tcm-Rituximab安全限度及在正常小鼠体内分布实验。结果显示:99 Tcm-rituximab标记率为90%~95%;标记化合物分子完整,免疫活性保留完全,标记化合物无菌无热源。受试小鼠以60mg/kg剂量注射99 Tcm-rituximab(相当于人体用量的500倍),1周内未见小鼠死亡。小鼠体内分布结果显示:99 Tcm-ritux-imab入血后主要通过肾脏排泄,放射性摄取值由1h的(14.01±0.61)%ID/g减少为24h的(3.51±0.48)%ID/g;肝脏亦可见摄取。各器官未见有明显的放射性滞留。因此,99 Tcm-rituximab结构及性能稳定,无急性毒性,使用安全,可应用于临床。 展开更多
关键词 99Tcm-rituximab 前哨淋巴结 显像剂 安全限度
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