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Expression of c-kit receptor in peripheral blood mononuclear cells in patients with systemic lupus erythematosus
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作者 Maihua Hou Lingyun Sun Xinzheng Lu 《Journal of Nanjing Medical University》 2006年第1期59-62,共4页
Objective: To determine the expression of c-kit receptor in peripheral blood mononuclear cells (PBMCs) in patients with systemic lupus erythematosus (SLE), and analyze the relationship between the c-kit expressio... Objective: To determine the expression of c-kit receptor in peripheral blood mononuclear cells (PBMCs) in patients with systemic lupus erythematosus (SLE), and analyze the relationship between the c-kit expression level of PBMCs and clinical parameters. Methods: Peripheral blood mononuclear cells in 47 patients with SLE and 21 healthy volunteers were collected. Expression of c-kit mRNA in PBMCs were determined with reverse transcription-polymerase chain reaction (RT-PCR). The protein of c-kit receptor (CDllT) in PBMCs was measured by flow cytometry. Results: Expression of c-kit receptor protein and mRNA in patients with active or inactive SLE ( n = 47) were significantly higher than those in controls. The c-kit receptor of PBMCs in SLE patients were significantly higher than those in healthy controls ( n = 21 ), the c-kit receptor of PBMCs in active patients ( n = 27) were significantly higher than those in inactive patients ( n = 20) and there was no significant difference was found between patients with inactive SLE and healthy controls( P 〉 0.05). The c-kit receptor of PBMCs in SLE have significant association with activity index. Conclusion: Production of c-kit receptor is aberrantly increased in PBMCs in patients with SLE. C-kit receptor might be more closely related to the clinical parameters in SLE patients, which might reflect the clinical status of SLE patients. 展开更多
关键词 systemic lupus erythematosus c-kit receptor peripheral blood mononuclear cells
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Expression of c-kit receptor in human cholangiocarcinoma and in vivo treatment with imatinib mesilate in chimeric mice 被引量:7
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作者 Thomas Kamenz Karel Caca +3 位作者 Thilo Blüthner Andrea Tannapfel Joachim Mssner Marcus Wiedmann 《World Journal of Gastroenterology》 SCIE CAS CSCD 2006年第10期1583-1590,共8页
AIM: To investigate the c-kit expression in biliary tract cancer cell lines and histological sections from patients with extrahepatic cholangiocarcinoma (CC) and to evaluate the efficacy of in vitro and in vitro tr... AIM: To investigate the c-kit expression in biliary tract cancer cell lines and histological sections from patients with extrahepatic cholangiocarcinoma (CC) and to evaluate the efficacy of in vitro and in vitro treatment with imatinib mesilate. METHODS: The protein expression of c-kit in the human biliary tract cancer cell lines Mz-ChA-2 and EGI-1 and histological sections from 19 patients with extrahepatic CC was assessed by immunoblotting, immunocytochemistry, and immunohistochemistry. The anti-proliferative effect of imatinib mesilate on biliary tract cancer cell lines Mz-ChA-2 and EGI-1 was studied in vitro by automated cell counting. In addition, immunodeficient NMRI mice (Taconic^TM) were subcutaneously injected with 5 × 10^6 cells of cell lines MzChA-2 and EGI-1. After having reached a tumour volume of 200 mm^3, daily treatment was started intraperitoneally with imatinib mesilate at a dose of 50 mgikg or normal saline (NS). Tumor volume was calculated with a Vernier caliper. After 14 d, mice were sacrificed with tumors excised and tumor mass determined.RESULTS: Immunoblotting revealed presence of c-kit in Mz-ChA-2 and absence in EGI-1 cells. Immunocytochemistry with c-kit antibodies displayed a cytoplasmatic and membraneous localization of receptor protein in Mz-ChA-2 cells and absence of c-kit in EGI-1 cells, c-kit was expressed in 7 of 19 (37%) extrahepatic humanCC tissue samples, 2 showed a moderate and 5 a rather weak immunostaining. Imatinib mesilate at a low concentration of 5 μmoliL caused a significant growth inhibition in the c-kit positive cell line Mz-ChA-2 (31%), but not in the c-kit negative cell line EGI-1 (0%) (P〈0.05). Imatinib mesilate at an intermediate concentration of 10 μmoliL inhibited cellular growth of both cell lines (51% vs 57%). Imatinib mesilate at a higher concentration of 20 μmoliL seemed to have a general toxic effect on both cell lines. The IC50 values were 9.7 μmoliL and 11 μmoliL, respectively. After 14 d of in vitro treatment with imatinib mesilate, using the chimeric mouse model, c-kit positive Mz-ChA-2 tumors had a significantly reduced volume and mass as compared to NS treatment (P〈 0.05). In contrast to that, treatment of mice bearing c-kit negative EGI-1 tumors did not result in any change of tumor volume and mass as compared to NS treatment. CONCLUSION: c-kit expression is detectable at a moderate to low protein level in biliary tract cancer. Imatinib mesilate exerts marked effects on tumor growth in vitro andin vitro dependent on the level of c-kit expression. 展开更多
关键词 CHOLANGIOCARCINOMA IMATINIB Tyrosine kinase inhibitor c-kit Chimeric mice
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c-KIT受体蛋白在犬皮肤肥大细胞瘤中的作用及其应用
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作者 康静静 蔡茂 +3 位作者 焦静旖 秦永敏 杨静亚 宋予震 《中国兽医杂志》 CAS 北大核心 2024年第10期106-111,共6页
皮肤肥大细胞瘤(MCT)是犬发生率较高的皮肤肿瘤类型之一,多发于老年犬,是危害犬类健康的重要疾病之一。c-KIT受体蛋白是一种跨膜蛋白,具有酪氨酸激酶活性,可调控肥大细胞的生长和分化。本文旨在阐明c-KIT受体蛋白在犬皮肤MCT中的作用及... 皮肤肥大细胞瘤(MCT)是犬发生率较高的皮肤肿瘤类型之一,多发于老年犬,是危害犬类健康的重要疾病之一。c-KIT受体蛋白是一种跨膜蛋白,具有酪氨酸激酶活性,可调控肥大细胞的生长和分化。本文旨在阐明c-KIT受体蛋白在犬皮肤MCT中的作用及其应用,总结了c-KIT受体蛋白在肥大细胞增殖调控中的作用,深入探讨了c-KIT受体蛋白检测在犬皮肤MCT诊断中的应用价值,明确了c-KIT受体蛋白在犬皮肤MCT发生发展中的作用,同时也为进一步研究c-KIT受体蛋白在犬皮肤MCT中的发病机制提供了重要参考。 展开更多
关键词 皮肤 肥大细胞瘤 作用机制 c-kit受体蛋白
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温胃阳汤对功能性消化不良大鼠肥大细胞活化及SCF/c-Kit信号通路的影响 被引量:1
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作者 税典奎 黎舒婷 +4 位作者 黄慧花 龙海华 杨健 罗诗雨 覃凌娜 《中国病理生理杂志》 CAS CSCD 北大核心 2024年第1期74-80,共7页
目的:基于肥大细胞活化及干细胞因子(stem cell factor,SCF)/受体酪氨酸激酶c-Kit信号通路探讨温胃阳汤治疗大鼠功能性消化不良的作用机制。方法:将60只SD大鼠随机分为空白组,模型组,雷尼替丁组及温胃阳汤低、中、高剂量组,每组10只。... 目的:基于肥大细胞活化及干细胞因子(stem cell factor,SCF)/受体酪氨酸激酶c-Kit信号通路探讨温胃阳汤治疗大鼠功能性消化不良的作用机制。方法:将60只SD大鼠随机分为空白组,模型组,雷尼替丁组及温胃阳汤低、中、高剂量组,每组10只。空白组大鼠不予造模,其他各组采用夹尾刺激加不规则喂养复合番泻叶法建立大鼠功能性消化不良模型,模型建立后,空白组及模型组灌胃给予生理盐水,温胃阳汤低、中、高剂量组和雷尼替丁组则分别用温胃阳汤(0.743 g/mL、1.485 g/mL和2.970 g/mL)及盐酸雷尼替丁胶囊(3 g/L)灌胃。治疗结束后,以碳墨推进法测定小肠推进率;采用甲苯胺蓝染色观察大鼠十二指肠组织肥大细胞并计数;ELISA测定大鼠十二指肠中肥大细胞类胰蛋白酶(mast cell tryptase,MCT)和组胺(histamine,HA)的含量;RT-qPCR检测十二指肠中SCF和c-Kit mRNA的表达;Western blot和免疫组化检测十二指肠中SCF和c-Kit蛋白的表达水平。结果:与模型组相比,温胃阳汤治疗显著提高大鼠的小肠推进率(P<0.05);ELISA结果显示,温胃阳汤治疗可减少大鼠十二指肠黏膜组织肥大细胞数量及MCT和HA含量(P<0.05);Western blot和免疫组化结果表明,温胃阳汤治疗可上调大鼠十二指肠组织c-Kit和SCF蛋白的表达水平(P<0.05),增加SCF和c-Kit阳性细胞数(P<0.05);RT-qPCR结果显示,WWYD治疗可上调大鼠十二指肠组织c-Kit和SCF mRNA的表达(P<0.01)。而且,小肠推进率分别与MCT和HA含量呈负相关,与SCF和c-Kit的表达呈正相关。结论:温胃阳汤能促进大鼠十二指肠动力,其作用机制可能与抑制大鼠十二指肠MCT和HA的生成,及激活SCF/c-Kit信号通路有关。 展开更多
关键词 功能性消化不良 温胃阳汤 肥大细胞 SCF/c-kit信号通路 十二指肠
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Are TrkB receptor agonists the right tool to fulfill the promises for a therapeutic value of the brain-derived neurotrophic factor? 被引量:4
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作者 Marta Zagrebelsky Martin Korte 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第1期29-34,共6页
Brain-derived neurotrophic factor signaling via its receptor tro pomyosin receptor kinase B regulates several crucial physiological processes.It has been shown to act in the brain,promoting neuronal survival,growth,an... Brain-derived neurotrophic factor signaling via its receptor tro pomyosin receptor kinase B regulates several crucial physiological processes.It has been shown to act in the brain,promoting neuronal survival,growth,and plasticity as well as in the rest of the body where it is involved in regulating for instance aspects of the metabolism.Due to its crucial and very pleiotro pic activity,reduction of brain-derived neurotrophic factor levels and alterations in the brain-derived neurotrophic factor/tropomyosin receptor kinase B signaling have been found to be associated with a wide spectrum of neurological diseases.Howeve r,because of its poor bioavailability and pharmacological properties,brain-derived neurotrophic factor itself has a very low therapeutic value.Moreover,the concomitant binding of exogenous brain-derived neurotrophic factor to the p75 neurotrophin receptor has the potential to elicit several unwanted and deleterious side effects.Therefo re,developing tools and approaches to specifically promote tropomyosin receptor kinase B signaling has become an important goal of translational research.Among the newly developed tools are different categories of tropomyosin receptor kinase B receptor agonist molecules.In this review,we give a comprehensive description of the diffe rent tro pomyosin receptor kinase B receptor agonist drugs developed so far and of the res ults of their application in animal models of several neurological diseases.Moreover,we discuss the main benefits of tropomyosin receptor kinase B receptor agonists,concentrating especially on the new tropomyosin receptor kinase B agonist antibodies.The benefits observed both in vitro and in vivo upon application of tropomyosin receptor kinase B receptor agonist drugs seem to predominantly depend on their general neuroprotective activity and their ability to promote neuronal plasticity.Moreover,tro pomyosin receptor kinase B agonist antibodies have been shown to specifically bind the tropomyosin receptor kinase B receptor and not p75 neurotrophin receptor.Therefore,while,based on the current knowledge,the tropomyosin receptor kinase B receptor agonists do not seem to have the potential to reve rse the disease pathology per se,promoting brainderived neurotrophic factor/tro pomyosin receptor kinase B signaling still has a very high therapeutic relevance. 展开更多
关键词 Alzheimer's disease brain-derived neurotrophic factor DEPRESSION Parkinson's disease tropomyosin receptor kinase B receptor
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基于drop-off ddPCR方法检测急性髓系白血病C-KIT基因N822位点突变及其临床应用
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作者 李婷 金晔 +7 位作者 袁倩 姚冬明 向鹤麟 肖高飞 于迪 冷加燕 林江 钱军 《江苏大学学报(医学版)》 CAS 2024年第2期151-155,160,共6页
目的:建立急性髓系白血病(acute myeloid leukemia, AML)患者C-KIT基因N822位点突变的drop-off微滴式数字PCR(droplet digital PCR,ddPCR)定量检测方法,并评价其临床应用价值。方法:针对C-KIT基因第17外显子设计一对引物及探针,优化drop... 目的:建立急性髓系白血病(acute myeloid leukemia, AML)患者C-KIT基因N822位点突变的drop-off微滴式数字PCR(droplet digital PCR,ddPCR)定量检测方法,并评价其临床应用价值。方法:针对C-KIT基因第17外显子设计一对引物及探针,优化drop-off ddPCR反应条件及体系,评价该方法的特异性、灵敏度、重复性,使用所建立的方法对140例已行Sanger测序的AML初诊患者骨髓标本进行检测,并用二代测序(next generation sequencing, NGS)验证结果;用drop-off ddPCR对3例阳性患者化疗后C-KIT突变频率进行动态监测。结果:drop-off ddPCR检测C-KIT基因N822位点突变的最适退火温度为54℃,空白检测限为1.62拷贝数/μL,最低检测下限为10.12拷贝数/μL,线性良好。140例AML初诊患者样本中Sanger测序检出2例阳性(1.4%),而ddPCR共检出突变7例(5.0%),突变频率为0.29%~7.41%;进一步应用常规NGS方法对ddPCR阳性样本进行验证,共检出阳性3例(2.1%),等位基因频率为1.26%~8.00%。动态监测3例阳性患者C-KIT突变频率,结果显示治疗达完全缓解时C-KIT突变频率明显下降甚至降低至0。结论:本研究建立了检测C-KIT基因N822位点突变的drop-off ddPCR技术,具有良好的方法学检测性能,其灵敏度高于Sanger测序和NGS,有望用于阳性患者缓解后的可检测残留疾病监测及治疗指导。 展开更多
关键词 drop-off微滴式数字PCR c-kit基因 基因突变 微小残留病 急性髓系白血病 预后
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哺乳动物毛色候选基因c-KIT的研究进展
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作者 黄芩 徐睿 +3 位作者 王晋康 八千张加 陈俊宇 黄秋月 《中国畜牧杂志》 CAS CSCD 北大核心 2024年第7期41-46,共6页
哺乳动物的皮毛颜色主要受毛发中黑色素的种类和数量影响。c-KIT基因编码一种酪氨酸激酶跨膜受体,被称为肥大/干细胞生长因子受体,与黑色素生物合成相关。c-KIT基因突变会抑制干细胞生长因子受体功能,导致黑色素细胞的生成、成熟、增殖... 哺乳动物的皮毛颜色主要受毛发中黑色素的种类和数量影响。c-KIT基因编码一种酪氨酸激酶跨膜受体,被称为肥大/干细胞生长因子受体,与黑色素生物合成相关。c-KIT基因突变会抑制干细胞生长因子受体功能,导致黑色素细胞的生成、成熟、增殖、分化和迁移等过程受到影响。本文就哺乳动物毛色形成的机制和主效基因、c-KIT基因的作用机理及其对哺乳动物毛色的影响进行综述,以期为深入研究哺乳动物毛色遗传机制以及不同毛色的选种和选育提供参考依据。 展开更多
关键词 哺乳动物 c-kit基因 毛色
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Role of bitter contributors and bitter taste receptors:a comprehensive review of their sources,functions and future development 被引量:1
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作者 Xinyue Zhou Han Wang +6 位作者 Ming Huang Jin Chen Jianle Chen Huan Cheng Xingqian Ye Wenjun Wang Donghong Liu 《Food Science and Human Wellness》 SCIE CAS CSCD 2024年第4期1806-1824,共19页
Bitterness,one of the 5“basic tastes”,is usually undesired by humans.However,abundant literature reported that bitter fruits and vegetables have beneficial health effects due to their bitter contributors.This review... Bitterness,one of the 5“basic tastes”,is usually undesired by humans.However,abundant literature reported that bitter fruits and vegetables have beneficial health effects due to their bitter contributors.This review provided an updated overview of the main bitter contributors of typical bitter fruits and vegetables and their health benefits.The main bitter contributors,including phenolics,terpenoids,alkaloids,amino acids,nucleosides and purines,were summarized.The bioactivities and wide range of beneficial effects of them on anti-cancers,anti-inflammations,anti-microbes,neuroprotection,inhibiting chronic and acute injury in organs,as well as regulating behavior performance and metabolism were reported.Furthermore,not only did the bitter taste receptors(taste receptor type 2 family,T2Rs)show taste effects,but extra-oral T2Rs could also be activated by binding with bitter components,regulating physiological activities via modulating hormone secretion,immunity,metabolism,and cell proliferation.This review provided a new perspective on exploring and explaining the nutrition of bitter foods,revealing the relationship between the functions of bitter contributors from food and T2Rs.Future trends may focus on revealing the possibility of T2Rs being targets for the treatment of diseases,exploring the mechanism of T2Rs mediating the bioactivities,and making bitter foods more acceptable without getting rid of bitter contributors. 展开更多
关键词 Bitter contributors Bitter taste receptor Health benefits FRUITS VEGETABLES
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Precision targeting in hepatocellular carcinoma:Exploring ligandreceptor mediated nanotherapy 被引量:1
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作者 Xia-Qing Zhou Ya-Ping Li Shuang-Suo Dang 《World Journal of Hepatology》 2024年第2期164-176,共13页
Hepatocellular carcinoma(HCC)is the most common primary liver cancer and poses a major challenge to global health due to its high morbidity and mortality.Conventional chemotherapy is usually targeted to patients with ... Hepatocellular carcinoma(HCC)is the most common primary liver cancer and poses a major challenge to global health due to its high morbidity and mortality.Conventional chemotherapy is usually targeted to patients with intermediate to advanced stages,but it is often ineffective and suffers from problems such as multidrug resistance,rapid drug clearance,nonspecific targeting,high side effects,and low drug accumulation in tumor cells.In response to these limitations,recent advances in nanoparticle-mediated targeted drug delivery technologies have emerged as breakthrough approaches for the treatment of HCC.This review focuses on recent advances in nanoparticle-based targeted drug delivery systems,with special attention to various receptors overexpressed on HCC cells.These receptors are key to enhancing the specificity and efficacy of nanoparticle delivery and represent a new paradigm for actively targeting and combating HCC.We comprehensively summarize the current understanding of these receptors,their role in nanoparticle targeting,and the impact of such targeted therapies on HCC.By gaining a deeper understanding of the receptor-mediated mechanisms of these innovative therapies,more effective and precise treatment of HCC can be achieved. 展开更多
关键词 TARGETING Hepatocellular carcinoma receptor NANOMEDICINE CHEMOTHERAPY
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基于SCF/C-kit信号通路探讨益髓破血方改善脑出血小鼠肠动力“通腑”作用机制
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作者 廖颖 李萍 《吉林中医药》 2024年第9期1075-1079,共5页
目的观察益髓破血方对脑出血小鼠排便情况与结肠组织干细胞因子(stem cell factor,SCF)/酪氨酸激酶受体(kit proto-oncogene,C-kit)信号通路的影响,探讨益髓破血方调节脑出血小鼠肠动力通腑作用机制。方法将54只SPF级健康雄性C57BL/6J... 目的观察益髓破血方对脑出血小鼠排便情况与结肠组织干细胞因子(stem cell factor,SCF)/酪氨酸激酶受体(kit proto-oncogene,C-kit)信号通路的影响,探讨益髓破血方调节脑出血小鼠肠动力通腑作用机制。方法将54只SPF级健康雄性C57BL/6J小鼠随机均分为假手术组、模型组与方剂治疗组,采用鼠尾自体血注入法制作实验性脑出血模型,假手术组只进针不注射。方剂治疗组给予1 g/mL益髓破血方悬浊液灌胃,假手术组、模型组给予等体积生理盐水灌胃,每天1次。观察各组小鼠排便情况,记录第1天、第3天、第7天同时段6 h内的排便量以及末次灌胃后首次排便间隔时间,并于相同时间分段点处死小鼠取材,采用免疫组化和Western Blot法检测小鼠结肠组织中的SCF、C-kit蛋白。结果与假手术组比较,模型组小鼠第1天、第3天、第7天各6 h内排便量显著减少(P<0.05),末次灌胃首次排便时间明显滞后(P<0.05),结肠组织中SCF、C-kit蛋白表达显著减少(P<0.05),且随周期延长呈逐渐降低趋势;与模型组比较,方剂治疗组第1天、第3天、第7天各6 h内排便量相对增多(P<0.05),首次排便时间缩短(P<0.05),SCF、C-kit蛋白表达水平升高(P<0.05),且随时间推移逐渐向正常量恢复。结论益髓破血方干预治疗脑出血小鼠,可以增加肠动力,促进排便,发挥通腑作用使肠功能恢复,改善脑出血后便秘,其机制可能与SCF/C-kit信号通路有关。 展开更多
关键词 脑出血 益髓破血方 SCF/c-kit信号通路 肠动力 通腑
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基于SCF/c-kit信号通路探讨理气通便方对气滞型慢传输型便秘大鼠肠道动力的影响
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作者 柯丹枫 刘启鸿 +6 位作者 骆云丰 柯晓 胡露楠 严锦贤 任彦 方文怡 赵培琳 《福建中医药》 2024年第2期12-16,共5页
目的 基于SCF/c-kit信号通路探讨理气通便方对气滞型慢传输型便秘(STC)大鼠肠道动力的影响。方法 将36只Wistar雌性大鼠按随机数字表法分为对照组6只和造模组30只。造模组采用“洛哌丁胺混悬液+夹尾刺激”复制气滞型STC大鼠模型,连续刺... 目的 基于SCF/c-kit信号通路探讨理气通便方对气滞型慢传输型便秘(STC)大鼠肠道动力的影响。方法 将36只Wistar雌性大鼠按随机数字表法分为对照组6只和造模组30只。造模组采用“洛哌丁胺混悬液+夹尾刺激”复制气滞型STC大鼠模型,连续刺激14 d。当大鼠表现出激惹、易怒、烦躁等情况,正常喂养饲料时出现大便干硬、排便数量减少等表现时,说明气滞型便秘模型造模成功。将造模成功的大鼠按照随机数字表法分为模型组、西药组、低剂量组、中剂量组和高剂量组各6只,低、中、高剂量组分别按5.15、10.3、20.6 g/(kg·d)给予理气通便方药液灌胃;西药组按0.18 mg/(kg·d)给予琥珀酸普芦卡必利片混悬液灌胃;对照组和模型组按10 mL/(kg·d)给予无菌水灌胃,每日1次,连续灌胃14 d。比较6组末次给药后6 h的粪便排出量、粪便含水量和小肠推进率;HE染色观察结肠组织病理变化;免疫组化检测结肠组织c-kit蛋白表达水平;Western blot检测结肠组织c-kit、SCF蛋白表达量。结果 HE染色显示:对照组大鼠结肠黏膜完整,杯状细胞和腺体排列整齐,未见炎症细胞聚集;模型组结肠黏膜出现肠腺排列欠整齐,黏膜下层间质血管扩张;各给药组结肠黏膜肠腺排列整齐,未观察到明显上皮损伤。与对照组比较,模型组粪便排出量、粪便含水量和小肠推进率均明显降低(P<0.05),结肠组织c-kit蛋白表达水平和c-kit、SCF蛋白表达量均明显降低(P<0.05)。与模型组比较,西药组、中剂量组、高剂量组粪便排出量、粪便含水率和小肠推进率均明显提高(P<0.05),低剂量组粪便排出量和粪便含水率均明显提高(P<0.05);给药组结肠组织c-kit蛋白表达水平均明显提高(P<0.05);低、中、高剂量组结肠组织c-kit蛋白表达量均明显提高(P<0.05),高剂量组SCF蛋白表达量明显提高(P<0.05)。结论 理气通便方可提高气滞型STC模型大鼠结肠组织中ICC的表达及调控SCF/c-kit信号通路,恢复对胃肠道节律的正常调控来改善便秘的症状。 展开更多
关键词 慢传输型便秘 气滞 理气通便方 ICC SCF/c-kit信号通路
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Transient receptor potential channels as predictive marker and potential indicator of chemoresistance in colon cancer 被引量:1
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作者 WEI HU THOMAS WARTMANN +5 位作者 MARCO STRECKER ARISTOTELIS PERRAKIS ROLAND CRONER ARPAD SZALLASI WENJIE SHI ULF D.KAHLERT 《Oncology Research》 SCIE 2024年第1期227-239,共13页
Transient receptor potential(TRP)channels are strongly associated with colon cancer development and progression.This study leveraged a multivariate Cox regression model on publicly available datasets to construct a TR... Transient receptor potential(TRP)channels are strongly associated with colon cancer development and progression.This study leveraged a multivariate Cox regression model on publicly available datasets to construct a TRP channels-associated gene signature,with further validation of signature in real world samples from our hospital treated patient samples.Kaplan-Meier(K-M)survival analysis and receiver operating characteristic(ROC)curves were employed to evaluate this gene signature’s predictive accuracy and robustness in both training and testing cohorts,respectively.Additionally,the study utilized the CIBERSORT algorithm and single-sample gene set enrichment analysis to explore the signature’s immune infiltration landscape and underlying functional implications.The support vector machine algorithm was applied to evaluate the signature’s potential in predicting chemotherapy outcomes.The findings unveiled a novel three TRP channels-related gene signature(MCOLN1,TRPM5,and TRPV4)in colon adenocarcinoma(COAD).The ROC and K-M survival curves in the training dataset(AUC=0.761;p=1.58e-05)and testing dataset(AUC=0.699;p=0.004)showed the signature’s robust predictive capability for the overall survival of COAD patients.Analysis of the immune infiltration landscape associated with the signature revealed higher immune infiltration,especially an increased presence of M2 macrophages,in high-risk group patients compared to their low-risk counterparts.High-risk score patients also exhibited potential responsiveness to immune checkpoint inhibitor therapy,evident through increased CD86 and PD-1 expression profiles.Moreover,the TRPM5 gene within the signature was highly expressed in the chemoresistance group(p=0.00095)and associated with poor prognosis(p=0.036)in COAD patients,highlighting its role as a hub gene of chemoresistance.Ultimately,this signature emerged as an independent prognosis factor for COAD patients(p=6.48e-06)and expression of model gene are validated by public data and real-world patients.Overall,this bioinformatics study provides valuable insights into the prognostic implications and potential chemotherapy resistance mechanisms associated with TRPs-related genes in colon cancer. 展开更多
关键词 Colon cancer Transient receptor potential channels Prognostic signature Chemotherapy efficiency TRPM5
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PRaG 3.0 therapy for human epidermal growth factor receptor 2-positive metastatic pancreatic ductal adenocarcinoma:A case report 被引量:2
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作者 Yue-Hong Kong Mei-Ling Xu +10 位作者 Jun-Jun Zhang Guang-Qiang Chen Zhi-Hui Hong Hong Zhang Xiao-Xiao Dai Yi-Fu Ma Xiang-Rong Zhao Chen-Yang Zhang Rong-Zheng Chen Peng-Fei Xing Li-Yuan Zhang 《World Journal of Gastroenterology》 SCIE CAS 2024年第9期1237-1249,共13页
BACKGROUND Pancreatic ductal adenocarcinoma(PDAC)is a highly fatal disease with limited effective treatment especially after first-line chemotherapy.The human epidermal growth factor receptor 2(HER-2)immunohistochemis... BACKGROUND Pancreatic ductal adenocarcinoma(PDAC)is a highly fatal disease with limited effective treatment especially after first-line chemotherapy.The human epidermal growth factor receptor 2(HER-2)immunohistochemistry(IHC)positive is associated with more aggressive clinical behavior and shorter overall survival in PDAC.CASE SUMMARY We present a case of multiple metastatic PDAC with IHC mismatch repair proficient but HER-2 IHC weakly positive at diagnosis that didn’t have tumor regression after first-line nab-paclitaxel plus gemcitabine and PD-1 inhibitor treatment.A novel combination therapy PRaG 3.0 of RC48(HER2-antibody-drug conjugate),radio-therapy,PD-1 inhibitor,granulocyte-macrophage colony-stimulating factor and interleukin-2 was then applied as second-line therapy and the patient had confirmed good partial response with progress-free-survival of 6.5 months and overall survival of 14.2 month.She had not developed any grade 2 or above treatment-related adverse events at any point.Percentage of peripheral CD8^(+) Temra and CD4^(+) Temra were increased during first two activation cycles of PRaG 3.0 treatment containing radiotherapy but deceased to the baseline during the maintenance cycles containing no radiotherapy.CONCLUSION PRaG 3.0 might be a novel strategy for HER2-positive metastatic PDAC patients who failed from previous first-line approach and even PD-1 immunotherapy but needs more data in prospective trials. 展开更多
关键词 Pancreatic ductal adenocarcinoma PRaG 3.0 therapy Human epidermal growth factor receptor 2 Novel combination therapy Case report
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二陈汤通过调控SCF/C-kit通路介导的痰湿型脑出血急性期胃肠功能障碍的研究
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作者 匡逸 鄢伟 +3 位作者 张晓菲 唐明 张增 王春燕 《环球中医药》 CAS 2024年第8期1499-1506,共8页
目的通过观察二陈汤对痰湿证脑出血急性期大鼠胃肠组织干细胞因子(stemcellfactor,SCF)/干细胞因子受体(C-kit)信号通路的动态变化的影响,探讨痰湿型体质与脑出血急性期胃肠功能障碍的关系及二陈汤的作用机制。方法将60只SD大鼠随机均... 目的通过观察二陈汤对痰湿证脑出血急性期大鼠胃肠组织干细胞因子(stemcellfactor,SCF)/干细胞因子受体(C-kit)信号通路的动态变化的影响,探讨痰湿型体质与脑出血急性期胃肠功能障碍的关系及二陈汤的作用机制。方法将60只SD大鼠随机均分为空白组、假手术组、模型组、莫沙必利组(0.27 mg/d)、二陈汤低剂量组和二陈汤高剂量组(217、434 mg/d),每组10只。除空白组、假手术组外其余各组均采用自体血注入法制备大鼠脑出血模型,各组按剂量给予灌胃,空白组、假手术组、模型组给予生理盐水灌胃,每天2次,于给药7天处死大鼠,采用苏木精—伊红(hematoxylin-eosin,HE)染色法观察大鼠胃肠黏膜细胞形态变化,采用实时荧光定量PCR(Real-time PCR,RT-PCR)法和蛋白印迹(Western blot,WB)法检测大鼠胃、小肠组织中的SCF、C-kit蛋白及mRNA的表达水平。结果光镜下见空白组、假手术组大鼠胃肠黏膜细胞结构完整、形态规则,偶见轻微充血现象;模型组见组织细胞充血、水肿、炎性细胞浸润明显、组织糜烂;莫沙必利组及二陈汤低、高剂量组胃肠黏膜各层次欠清晰、排列不规则,部分组织可见组织细胞充血、水肿、炎性细胞浸润,此3组中以二陈汤低剂量组胃肠黏膜表现最为严重。模型组大鼠胃肠组织中SCF、C-kit mRNA表达水平较空白组、假手术组显著降低(P<0.05),莫沙必利组、二陈汤低剂量组、二陈汤高剂量组的表达增加(P<0.05),莫沙必利组和二陈汤高剂量组大鼠胃组织中的SCF mRNA表达显著增加(P<0.05),二陈汤高剂量组C-kit mRNA表达显著增加(P<0.05);小肠组织中的SCF、C-kit mRNA含量随二陈汤浓度提高而增加(P<0.05)。与模型组相比,莫沙必利组、二陈汤低、高剂量组大鼠胃肠组织中SCF、C-kit蛋白表达水平较模型组显著升高(P<0.05),三组中以莫沙必利及高剂量二陈汤效果更佳(P<0.05)。结论脑出血急性期痰湿型胃肠黏膜损伤及功能障碍的作用机制与SCF/C-kit信号通路相关蛋白及mRNA的表达降低有关,二陈汤可通过此机制进行有效干预,上调相关蛋白及mRNA的表达,有利于脑出血急性期胃肠功能障碍恢复。 展开更多
关键词 脑出血急性期 胃肠功能功能障碍 SCF/c-kit通路 二陈汤 痰湿证
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MicroRNA-630 alleviates inflammatory reactions in rats with diabetic kidney disease by targeting toll-like receptor 4 被引量:2
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作者 Qi-Shun Wu Dan-Na Zheng +3 位作者 Cheng Ji Hui Qian Juan Jin Qiang He 《World Journal of Diabetes》 SCIE 2024年第3期488-501,共14页
BACKGROUND Diabetic kidney disease(DKD)is a major complication of diabetes mellitus.Renal tubular epithelial cell(TEC)damage,which is strongly associated with the inflammatory response and mesenchymal trans-differenti... BACKGROUND Diabetic kidney disease(DKD)is a major complication of diabetes mellitus.Renal tubular epithelial cell(TEC)damage,which is strongly associated with the inflammatory response and mesenchymal trans-differentiation,plays a significant role in DKD;However,the precise molecular mechanism is unknown.The recently identified microRNA-630(miR-630)has been hypothesized to be closely associated with cell migration,apoptosis,and autophagy.However,the association between miR-630 and DKD and the underlying mechanism remain unknown.AIM To investigate how miR-630 affects TEC injury and the inflammatory response in DKD rats.METHODS Streptozotocin was administered to six-week-old male rats to create a hypergly cemic diabetic model.In the second week of modeling,the rats were divided into control,DKD,negative control of lentivirus,and miR-630 overexpression groups.After 8 wk,urine and blood samples were collected for the kidney injury assays,and renal tissues were removed for further molecular assays.The target gene for miR-630 was predicted using bioinformatics,and the association between miR-630 and toll-like receptor 4(TLR4)was confirmed using in vitro investigations and double luciferase reporter gene assays.Overexpression of miR-630 in DKD rats led to changes in body weight,renal weight index,basic blood parameters and histopathological changes.RESULTS The expression level of miR-630 was reduced in the kidney tissue of rats with DKD(P<0.05).The miR-630 and TLR4 expressions in rat renal TECs(NRK-52E)were measured using quantitative reverse transcription polymerase chain reaction.The mRNA expression level of miR-630 was significantly lower in the high-glucose(HG)and HG+mimic negative control(NC)groups than in the normal glucose(NG)group(P<0.05).In contrast,the mRNA expression level of TLR4 was significantly higher in these groups(P<0.05).However,miR-630 mRNA expression increased and TLR4 mRNA expression significantly decreased in the HG+miR-630 mimic group than in the HG+mimic NC group(P<0.05).Furthermore,the levels of tumor necrosis factor-alpha(TNF-α),interleukin-1β(IL-1β),and IL-6 were significantly higher in the HG and HG+mimic NC groups than in NG group(P<0.05).However,the levels of these cytokines were significantly lower in the HG+miR-630 mimic group than in the HG+mimic NC group(P<0.05).Notably,changes in protein expression were observed.The HG and HG+mimic NC groups showed a significant decrease in E-cadherin protein expression,whereas TLR4,α-smooth muscle actin(SMA),and collagen IV protein expression increased(P<0.05).Conversely,the HG+miR-630 mimic group exhibited a significant increase in E-cadherin protein expression and a notable decrease in TLR4,α-SMA,and collagen IV protein expression than in the HG+mimic NC group(P<0.05).The miR-630 targets TLR4 gene expression.In vivo experiments demonstrated that DKD rats treated with miR-630 agomir exhibited significantly higher miR-630 mRNA expression than DKD rats injected with agomir NC.Additionally,rats treated with miR-630 agomir showed significant reductions in urinary albumin,blood glucose,TLR4,and proinflammatory markers(TNF-α,IL-1β,and IL-6)expression levels(P<0.05).Moreover,these rats exhibited fewer kidney lesions and reduced infiltration of inflammatory cells.CONCLUSION MiR-630 may inhibit the inflammatory reaction of DKD by targeting TLR4,and has a protective effect on DKD. 展开更多
关键词 Diabetic kidney disease MicroRNA-630 Toll-like receptor 4 Mouse model Renal tubular epithelial cells damage Hyperglycemic model
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Leukocyte immunoglobulin-like receptor B2:A promising biomarker for colorectal cancer 被引量:1
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作者 Wen-Zhuo Zhao Hong-Gang Wang Xiao-Zhong Yang 《World Journal of Gastroenterology》 SCIE CAS 2024年第4期421-423,共3页
According to the latest global cancer statistics,colorectal cancer(CRC)has emerged as the third most prevalent malignant tumor across the globe.In recent decades,the medical field has implemented several levels of CRC... According to the latest global cancer statistics,colorectal cancer(CRC)has emerged as the third most prevalent malignant tumor across the globe.In recent decades,the medical field has implemented several levels of CRC screening tests,encompassing fecal tests,endoscopic examinations,radiological examinations and blood tests.Previous studies have shown that leukocyte immunoglobulin-like receptor B2(LILRB2)is involved in inhibiting immune cell function,immune evasion,and promoting tumor progression in acute myeloid leukemia and nonsmall cell lung cancer.However,its interaction with CRC has not been reported yet.Recently,a study published in the World Journal of Gastroenterology revealed that LILRB2 and its ligand,angiopoietin-like protein 2,are markedly overexpressed in CRC.This overexpression is closely linked to tumor progression and is indicative of a poor prognosis.The study highlights the potential of utilizing the concentration of LILRB2 in serum as a promising biomarker for tumors.However,there is still room for discussion regarding the data processing and analysis in this research. 展开更多
关键词 Colorectal cancer Leukocyte immunoglobulin-like receptor B2 Angiopoietinlike protein 2 Therapeutic target Noninvasive screening biomarker
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Olfactory receptors in neural regeneration in the central nervous system
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作者 Rafael Franco Claudia Garrigós +3 位作者 Toni Capó Joan Serrano-Marín Rafael Rivas-Santisteban Jaume Lillo 《Neural Regeneration Research》 SCIE CAS 2025年第9期2480-2494,共15页
Olfactory receptors are crucial for detecting odors and play a vital role in our sense of smell,influencing behaviors from food choices to emotional memories.These receptors also contribute to our perception of flavor... Olfactory receptors are crucial for detecting odors and play a vital role in our sense of smell,influencing behaviors from food choices to emotional memories.These receptors also contribute to our perception of flavor and have potential applications in medical diagnostics and environmental monitoring.The ability of the olfactory system to regenerate its sensory neurons provides a unique model to study neural regeneration,a phenomenon largely absent in the central nervous system.Insights gained from how olfactory neurons continuously replace themselves and reestablish functional connections can provide strategies to promote similar regenerative processes in the central nervous system,where damage often results in permanent deficits.Understanding the molecular and cellular mechanisms underpinning olfactory neuron regeneration could pave the way for developing therapeutic approaches to treat spinal co rd injuries and neurodegenerative diseases like Alzheimer's disease.Olfa ctory receptors are found in almost any cell of eve ry orga n/tissue of the mammalian body.This ectopic expression provides insights into the chemical structures that can activate olfactory receptors.In addition to odors,olfactory receptors in ectopic expression may respond to endogenous compounds and molecules produced by mucosal colonizing microbiota.The analysis of the function of olfactory receptors in ectopic expression provides valuable information on the signaling pathway engaged upon receptor activation and the receptor's role in proliferation and cell differentiation mechanisms.This review explo res the ectopic expression of olfa ctory receptors and the role they may play in neural regeneration within the central nervous system,with particular attention to compounds that can activate these receptors to initiate regenerative processes.Evidence suggests that olfactory receptors could serve as potential therapeutic targets for enhancing neural repair and recovery following central nervous system injuries. 展开更多
关键词 adenosine receptors adrenergic receptors ectopic expression G proteincoupled receptors GLIA NEURONS
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P2Y1 receptor in Alzheimer’s disease
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作者 Shan Luo Yifei Wang Tatsuhiro Hisatsune 《Neural Regeneration Research》 SCIE CAS 2025年第2期440-453,共14页
Alzheimer’s disease is the most frequent form of dementia characterized by the deposition of amyloid-beta plaques and neurofibrillary tangles consisting of hyperphosphorylated tau.Targeting amyloid-beta plaques has b... Alzheimer’s disease is the most frequent form of dementia characterized by the deposition of amyloid-beta plaques and neurofibrillary tangles consisting of hyperphosphorylated tau.Targeting amyloid-beta plaques has been a primary direction for developing Alzheimer’s disease treatments in the last decades.However,existing drugs targeting amyloid-beta plaques have not fully yielded the expected results in the clinic,necessitating the exploration of alternative therapeutic strategies.Increasing evidence unravels that astrocyte morphology and function alter in the brain of Alzheimer’s disease patients,with dysregulated astrocytic purinergic receptors,particularly the P2Y1 receptor,all of which constitute the pathophysiology of Alzheimer’s disease.These receptors are not only crucial for maintaining normal astrocyte function but are also highly implicated in neuroinflammation in Alzheimer’s disease.This review delves into recent insights into the association between P2Y1 receptor and Alzheimer’s disease to underscore the potential neuroprotective role of P2Y1 receptor in Alzheimer’s disease by mitigating neuroinflammation,thus offering promising avenues for developing drugs for Alzheimer’s disease and potentially contributing to the development of more effective treatments. 展开更多
关键词 ASTROCYTES NEUROINFLAMMATION P2Y1 receptor purinergic receptor
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Soluble p75 neurotrophic receptor as a reliable biomarker in neurodegenerative diseases: what is the evidence? 被引量:1
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作者 Georges Jourdi Samuel Fleury +1 位作者 Imane Boukhatem Marie Lordkipanidzé 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第3期536-541,共6页
Neurodegenerative diseases are often misdiagnosed,especially when the diagnosis is based solely on clinical symptoms.The p75 neurotrophic receptor(p75^(NTR))has been studied as an index of sensory and motor nerve deve... Neurodegenerative diseases are often misdiagnosed,especially when the diagnosis is based solely on clinical symptoms.The p75 neurotrophic receptor(p75^(NTR))has been studied as an index of sensory and motor nerve development and maturation.Its cleavable extracellular domain(ECD)is readily detectable in various biological fluids including plasma,serum and urine.There is evidence for increased p75NTR ECD levels in neurodegenerative diseases such as Alzheimer’s disease,amyotrophic lateral sclerosis,age-related dementia,schizophrenia,and diabetic neuropathy.Whether p75^(NTR) ECD could be used as a biomarker for diagnosis and/or prognosis in these disorders,and whether it could potentially lead to the development of targeted therapies,remains an open question.In this review,we present and discuss published studies that have evaluated the relevance of this emerging biomarker in the context of various neurodegenerative diseases.We also highlight areas that require further investigation to better understand the role of p75^(NTR) ECD in the clinical diagnosis and management of neurodegenerative disorders. 展开更多
关键词 Alzheimer’s disease amyotrophic lateral sclerosis BIOMARKER DEMENTIA diabetic neuropathy nerve growth factor receptor(NGFR) NEURODEGENERATION p75^(NTR) schizophrenia
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Melanocortin 3,5 receptors immunohistochemical expression in colonic mucosa of inflammatory bowel disease patients:A matter of disease activity?
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作者 Antonietta Gerarda Gravina Iacopo Panarese +7 位作者 Maria Consiglia Trotta Michele D'Amico Raffaele Pellegrino Franca Ferraraccio Marilena Galdiero Roberto Alfano Paolo Grieco Alessandro Federico 《World Journal of Gastroenterology》 SCIE CAS 2024年第9期1132-1142,共11页
BACKGROUND Melanocortin 3 and 5 receptors(i.e.,MC3R and MC5R)belong to the melanocortin family.However,data regarding their role in inflammatory bowel diseases(IBD)are currently unavailable.AIM This study aims to asce... BACKGROUND Melanocortin 3 and 5 receptors(i.e.,MC3R and MC5R)belong to the melanocortin family.However,data regarding their role in inflammatory bowel diseases(IBD)are currently unavailable.AIM This study aims to ascertain their expression profiles in the colonic mucosa of Crohn’s disease(CD)and ulcerative colitis(UC),aligning them with IBD disease endoscopic and histologic activity.METHODS Colonic mucosal biopsies from CD/UC patients were sampled,and immunohisto-chemical analyses were conducted to evaluate the expression of MC3R and MC5R.Colonic sampling was performed on both traits with endoscopic scores(Mayo endoscopic score and CD endoscopic index of severity)consistent with inflamed mucosa and not consistent with disease activity(i.e.,normal appearing mucosa).RESULTS In both CD and UC inflamed mucosa,MC3R(CD:+7.7 fold vs normal mucosa,P<0.01;UC:+12 fold vs normal mucosa,P<0.01)and MC5R(CD:+5.5 fold vs normal mucosa,P<0.01;UC:+8.1 fold vs normal mucosa,P<0.01)were significantly more expressed compared to normal mucosa.CONCLUSION MC3R and MC5R are expressed in the colon of IBD patients.Furthermore,expression may differ according to disease endoscopic activity,with a higher degree of expression in the traits affected by disease activity in both CD and UC,suggesting a potential use of these receptors in IBD pharmacology. 展开更多
关键词 Melanocortin 3 receptor Melanocortin 5 receptor Ulcerative colitis Crohn's disease Inflammatory bowel disease
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