期刊文献+
共找到5篇文章
< 1 >
每页显示 20 50 100
骨原发性促结缔组织增生性纤维瘤8例临床病理分析 被引量:3
1
作者 程慧 蒋智铭 《临床与实验病理学杂志》 CAS CSCD 北大核心 2015年第12期1370-1373,共4页
目的探讨骨原发性促结缔组织增生性纤维瘤(desmoplastic fibroma,DF)的临床病理特征。方法分析8例骨原发性DF患者的临床表现、影像学改变、病理形态、免疫表型和随访结果,并复习相关文献。结果 8例DF中女性3例,男性5例,年龄18~56岁,平... 目的探讨骨原发性促结缔组织增生性纤维瘤(desmoplastic fibroma,DF)的临床病理特征。方法分析8例骨原发性DF患者的临床表现、影像学改变、病理形态、免疫表型和随访结果,并复习相关文献。结果 8例DF中女性3例,男性5例,年龄18~56岁,平均30.5岁。发生部位:桡骨2例,跟骨、尺骨、趾骨、椎体、上颌骨、髋臼各1例。临床表现为病变部位的疼痛和肿胀。影像学表现为溶骨性占位,部分患者骨质破坏区内有粗大的骨小梁形成。大体肿瘤边界不清,灰白色无光泽,质地韧。镜下见肿瘤由纤细的梭形细胞和胶原纤维组成,瘤细胞呈束状、平行状或波浪状排列,细胞无异型,核分裂象罕见,肿瘤边界不清,呈浸润性生长,瘤细胞在骨小梁间穿插,有些病例侵犯骨皮质或继发动脉瘤样骨囊肿;1例复发后局部恶变,恶变成分为高分化纤维肉瘤,恶变病例细胞稍丰富,生长活跃,核有异型,可见核分裂象。免疫表型:瘤细胞胞核表达β-catenin,vimentin弥漫阳性;部分细胞表达SMA,Ki-67增殖指数﹤5%;MDM2、desmin、CD34和S-100均阴性。结论骨原发性DF罕见,诊断主要依赖影像学、病理形态学和免疫表型的结合,需与髓内高分化骨肉瘤、骨高分化纤维肉瘤、骨神经纤维瘤、骨神经鞘瘤、骨平滑肌瘤、纤维结构不良等良恶性病变鉴别。DF预后好,但易复发,少数病例可出现肉瘤样变,骨原发性DF被定性为中间型纤维源性肿瘤。 展开更多
关键词 骨肿 原发结缔组织增生纤维 临床病理学 诊断 鉴别诊断
下载PDF
人脐带间充质干细胞对裸鼠的促瘤和致瘤性研究 被引量:3
2
作者 谢长峰 杜杰 +6 位作者 曾桂芳 徐绍坤 梁晓 李婵 左丛林 刘沐芸 胡祥 《中华细胞与干细胞杂志(电子版)》 2016年第6期356-362,共7页
目的研究人脐带间充质干细胞(hUCMSCs)对动物是否具有促瘤性,以及不同代次是否有致瘤性,为其临床应用提供安全性依据。方法分别用人淋巴瘤细胞Raji接种于CB-17 SCID小鼠皮下、用人结肠癌细胞WiDr接种于BALB/c裸鼠皮下,建立皮下移植瘤模... 目的研究人脐带间充质干细胞(hUCMSCs)对动物是否具有促瘤性,以及不同代次是否有致瘤性,为其临床应用提供安全性依据。方法分别用人淋巴瘤细胞Raji接种于CB-17 SCID小鼠皮下、用人结肠癌细胞WiDr接种于BALB/c裸鼠皮下,建立皮下移植瘤模型,WiDr成模动物用完全随机法分为4组(n=8):模型对照组、hUCMSCs低、中、高剂量组;Raji成模动物用完全随机法分为5组(n=7):空白对照组、模型对照组、hUCMSCs低、中、高剂量组。hUCMSCs均静脉注射给药,观察hUCMSCs对皮下移植瘤的增殖是否有影响。另外,观察不同代次的hUCMSCs是否有致瘤性,NOD/SCID小鼠分别皮下接种hUCMSCs的第2、6、10代的细胞,注射后3周,16周对动物剖检,观察hUCMSCs皮下结节的形成及是否有肿瘤转化的倾向。对照组和hUCMSCs组的瘤体积及瘤重采用成组t检验进行统计分析,并计算hUCMSCs组相比对照组的相对肿瘤抑制率T/C%。结果 WiDr肿瘤模型中,第43天hUCMSCs中、高剂量组的瘤体积均显著低于模型对照组,分别为(586.7±274.4)mm^3、(689.5±114.8)mm^3 vs(945.9±234.0)mm^3,P<0.05,但T/C%值>40%;第51天hUCMSCs低、中高剂量组瘤体积均显著低于模型对照组,分别为(777.8±346.7)mm^3、(793.1±358.6)mm^3、(800.7±116.5)mm^3 vs(1300.0±356.8)mm^3,P均<0.05,但T/C%值均>40%;表明hUCMSCs在3个剂量下均未对WiDr肿瘤的生长有影响,无显著促进或抑制作用。Raji肿瘤模型中,hUCMSCs治疗组瘤体积与对照组相比在所有时间点差异均无统计学意义(P>0.05),显示hUCMSCs在本实验条件下对肿瘤生长没有明显的抑制和促进作用。两个模型的病理检测均未见对肿瘤增殖有明显影响。3个不同代次的hUCMSCs注射到NOD/SCID后16周对动物剖检,也没有观察到肿瘤转化的倾向。结论 hUCMSCs对裸鼠WiDr和Raji移植瘤模型的肿瘤增殖无促进作用,不同代次的hUCMSCs在NOD/SCID裸鼠体内移植也不具有致瘤性。 展开更多
关键词 脐带 间质干细胞 促瘤性
原文传递
细胞治疗产品的成瘤性和致瘤性风险评价 被引量:10
3
作者 屈哲 林志 +6 位作者 霍桂桃 侯田田 杨艳伟 张頔 耿兴超 李波 霍艳 《中国新药杂志》 CAS CSCD 北大核心 2021年第19期1819-1824,共6页
细胞治疗产品(cell therapy products,CTPs)具有潜在的肿瘤形成风险,即成瘤性、致瘤性和促瘤性。来自于人胚胎干细胞(human embryonic stem cells,hESCs)和人诱导多能干细胞(human induced pluripotent stem cells,hiPSCs)的干细胞终产... 细胞治疗产品(cell therapy products,CTPs)具有潜在的肿瘤形成风险,即成瘤性、致瘤性和促瘤性。来自于人胚胎干细胞(human embryonic stem cells,hESCs)和人诱导多能干细胞(human induced pluripotent stem cells,hiPSCs)的干细胞终产品中,由于可能存在未分化的干细胞残留、恶性转化细胞/突变和遗传不稳定性,其成瘤性风险最高。通过基因修饰的干细胞由于表达外源基因(如各种生长因子)以及基因修饰病毒载体(如逆转录病毒和慢病毒)的插入突变造成的致癌基因活化,也会增加CTPs的成瘤性和致瘤性风险。而终末分化的体细胞产品成瘤性风险相对较低。近年来,越来越多种类的细胞治疗产品进入临床应用,其肿瘤形成风险是产品研发者和监管当局都十分关注的安全性问题。本文介绍了细胞治疗产品可能存在的成瘤性、致瘤性和促瘤性风险概念,较全面地概述了目前对细胞治疗产品潜在肿瘤形成风险的体内外评价方法和对产品成瘤性和致瘤性风险评价的一般考虑。 展开更多
关键词 细胞治疗产品 促瘤性 风险评价
原文传递
Harnessing the immune system for the treatment of breast cancer 被引量:3
4
作者 Xinguo JIANG 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2014年第1期1-15,共15页
Standard treatment options for breast cancer include surgery, chemotherapy, radiation, and targeted therapies, such as adjuvant hormonal therapy and monoclonal antibodies. Recently, the recognition that chronic inflam... Standard treatment options for breast cancer include surgery, chemotherapy, radiation, and targeted therapies, such as adjuvant hormonal therapy and monoclonal antibodies. Recently, the recognition that chronic inflammation in the tumor microenvironment promotes tumor growth and survival during different stages of breast cancer development has led to the development of novel immunotherapies. Several immunotherapeutic strategies have been studied both preclinically and clinically and already have been shown to enhance the efficacy of conven- tional treatment modalities. Therefore, therapies targeting the immune system may represent a promising next-generation approach for the treatment of breast cancers. This review will discuss recent findings that elucidate the roles of suppressive immune cells and proinflammatory cytokines and chemokines in the tumor-promoting microen- vironment, and the most current immunotherapeutic strategies in breast cancer. 展开更多
关键词 Breast cancer Chronic inflammation Protumorigenic immune cells Therapeutic vaccines IMMUNOTHERAPY
原文传递
CRP, but not TNF-α or IL-6, decreases after weight loss in patients with morbid obesity exposed to intensive weight reduction and balneological treatment
5
作者 Danuta RO Przemyslaw ADAMCZYK +5 位作者 Joanna BOINSKA Robert SZAFKOWSKI Irena PONIKOWSKA Katarzyna STANKOWSKA Barbara GóRALCZYK Barbara RUSZKOWSKA-CIASTEK 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2015年第5期404-411,共8页
Objective:The aim of this study was to evaluate the concentrations of C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and the degree of homeostasis model assessment-insulin re... Objective:The aim of this study was to evaluate the concentrations of C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and the degree of homeostasis model assessment-insulin resistance (HOMA-IR) in patients with morbid obesity exposed to a three-week low-calorie diet and balneotherapy. Methods:The study included 33 patients (25 females and 8 males; mean age 46 years) with body mass index (BMI) values of〉40 kg/m2. Evaluations of CRP, IL-6, TNF-α, lipid profile, HOMA-IR, and fasting glucose were carried out before (baseline data) and three weeks after the treatment. The control group consisted of 20 healthy volunteers (15 females and 5 males) with a mean age of 39 years and BMI values of≤24.9 kg/m2. Results:In the blood of patients with morbid obesity we found significantly elevated levels of CRP, TNF-α, triglycerides, HOMA-IR and fasting glucose, but a de-creased level of high density lipoprotein (HDL)-cholesterol, compared with the healthy individuals. The treatment resulted in about a 9.4%reduction in body weight from 122.5 to 111.0 kg and a significant decrease in the concen-tration of CRP, but no change in TNF-αor IL-6. HOMA-IR was significantly reduced. Conclusions:The decrease in CRP level without changes in TNF-α or IL-6 concentrations after the low-calorie diet and balneological treatment, suggests that an essential amount of adipose tissue must be removed before proper adipocyte function is restored. The decrease in HOMA-IR indicates an improvement in insulin sensitivity, which is beneficial in obese patients. 展开更多
关键词 Pro-inflammatory cytokines Tumor necrosis factor-α (TNF-α) Interleukin-6 (IL-6) Morbid obesity
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部