期刊文献+
共找到12篇文章
< 1 >
每页显示 20 50 100
麻黄碱对脂多糖诱导的小胶质细胞功能损伤的修复作用及机制
1
作者 尹涛 姜丽真 +2 位作者 张盟盟 王睿健 张文超 《中国药房》 CAS 北大核心 2024年第1期33-37,共5页
目的研究麻黄碱对脂多糖(LPS)诱导的小胶质细胞功能损伤的修复作用及机制。方法以人小胶质细胞HMC3为研究对象,考察不同质量浓度麻黄碱(75、150、300、600μg/mL)对HMC3细胞活力和凋亡的影响。然后将HMC3细胞分为对照组(不受药物干预)、... 目的研究麻黄碱对脂多糖(LPS)诱导的小胶质细胞功能损伤的修复作用及机制。方法以人小胶质细胞HMC3为研究对象,考察不同质量浓度麻黄碱(75、150、300、600μg/mL)对HMC3细胞活力和凋亡的影响。然后将HMC3细胞分为对照组(不受药物干预)、LPS组(1μg/mL)、麻黄碱组(1μg/mL LPS+300μg/mL麻黄碱)、BAY11-7082组[1μg/mL LPS+5μmol/L核因子κB(NF-κB)信号通路抑制剂BAY11-7082]、抑制剂组(1μg/mL LPS+300μg/mL麻黄碱+5μmol/L BAY11-7082)和激活剂组(1μg/mL LPS+300μg/mL麻黄碱+1μmol/L NF-κB信号通路激活剂Prostratin),加入相应药物作用24 h后,检测细胞迁移能力和细胞中可溶性白细胞介素6(sIL-6)、白细胞介素10(IL-10)、超氧化物歧化酶(SOD)、丙二醛(MDA)水平以及NF-κB信号通路相关蛋白表达水平。结果300μg/mL的麻黄碱可使HMC3细胞活力显著升高、凋亡率显著降低(P<0.05)。与对照组相比,LPS组迁移细胞数显著增多,细胞中sIL-6、MDA水平和NF-κB蛋白磷酸化水平均显著升高,IL-10、SOD水平均显著降低(P<0.05)。与LPS组相比,麻黄碱组和BAY11-7082组上述指标水平均显著逆转(P<0.05)。与麻黄碱组相比,抑制剂组迁移细胞数显著减少,细胞中sIL-6、MDA水平和NF-κB蛋白磷酸化水平均显著降低,IL-10、SOD水平均显著升高(P<0.05);而激活剂组上述指标水平均显著逆转(P<0.05)。结论麻黄碱可通过抑制LPS诱导的HMC3细胞凋亡、迁移、炎症和氧化应激,修复细胞功能损伤,其作用机制可能与抑制NF-κB信号通路活性有关。 展开更多
关键词 小胶质细胞 麻黄碱 脂多糖 核因子ΚB信号通路 细胞功能损伤
下载PDF
胰淀素致大鼠胰岛细胞功能损伤的实验研究 被引量:1
2
作者 周琳 薛耀明 《第一军医大学学报》 CSCD 北大核心 2003年第9期922-924,共3页
目的观察胰淀素对体外培养的大鼠胰岛细胞功能的影响,探讨胰淀素在2型糖尿病发病过程中的作用。方法应用体外单层培养大鼠胰岛细胞,检测不同浓度胰淀素对细胞胰岛素分泌、细胞内DNA及胰岛素含量的影响。结果10 μmol/L以上胰淀素作用2 h... 目的观察胰淀素对体外培养的大鼠胰岛细胞功能的影响,探讨胰淀素在2型糖尿病发病过程中的作用。方法应用体外单层培养大鼠胰岛细胞,检测不同浓度胰淀素对细胞胰岛素分泌、细胞内DNA及胰岛素含量的影响。结果10 μmol/L以上胰淀素作用2 h后,可抑制高糖(16.7 mmol/L)刺激下的胰岛素分泌(P<0.01),并呈剂量依赖性。10 μmol/胰淀素作用后,胰岛β细胞内DNA、胰岛素含量升高,与对照组相比有显著性差(P<0.01)。结论10 μmol/L以上胰淀素可显著抑制高糖刺激下大鼠胰岛素的分泌与释放。 展开更多
关键词 胰淀素 胰岛细胞功能损伤 2型糖尿病 实验研究 大鼠
下载PDF
1型糖尿病β细胞功能损伤研究的若干进展 被引量:2
3
作者 顾丽萍 吴艺捷 《现代实用医学》 2004年第6期366-368,371,共4页
关键词 1型糖尿病 β细胞功能损伤 基因因素 环境因素 淋巴细胞 细胞因子
下载PDF
NLRP3炎症体与胰岛素抵抗、胰岛β细胞功能损伤的相关性研究 被引量:3
4
作者 白桂荣 姚雪松 +1 位作者 韩晶 谢晓敏 《宁夏医学杂志》 CAS 2018年第9期795-797,共3页
目的探讨不同糖代谢人群中血清NLRP3炎症体(NACHT,LRP及PYD结构域蛋白)的表达及与胰岛素抵抗的相关性。方法糖尿病组(DM) 27例,糖尿病前期组(PD) 30例,正常糖耐量组(NGT) 30例,测定血清中NLRP3、IL-1β、IL-18的水平,观察其在不同糖代... 目的探讨不同糖代谢人群中血清NLRP3炎症体(NACHT,LRP及PYD结构域蛋白)的表达及与胰岛素抵抗的相关性。方法糖尿病组(DM) 27例,糖尿病前期组(PD) 30例,正常糖耐量组(NGT) 30例,测定血清中NLRP3、IL-1β、IL-18的水平,观察其在不同糖代谢人群中的变化规律及其相关性。结果 3组间NLRP3、IL-1β、IL-18水平,DM组> PD组> NGT组(P <0. 05)。NLRP3与FBG、FINS、HOMA-IR、IL-1β、IL-18呈正相关,与HOMA-β呈负相关。结论 NLRP3在PD人群中即有表达增加,并且随着血糖逐步增高,慢性炎症损伤及胰岛素抵抗也逐渐加重。NLRP3炎症体可能是影响FBG、HOMA-IR及HOMA-β的重要因素。 展开更多
关键词 NLRP3炎症体 胰岛素抵抗 胰岛β细胞功能损伤
下载PDF
持续高血糖对胰岛B细胞功能的损伤
5
作者 康志荣 《中国现代医药科技》 2004年第3期117-118,共2页
1型糖尿病和2型糖尿病,最主要的代谢紊乱是高血糖,长期高血糖可导致B细胞功能损害,使其分泌胰岛索的能力下降。高血糖作为糖尿病的一种主要代谢异常.可引起广泛的周围组织、器官损伤,并参与糖尿病慢性并发症的形成。近期的研究表... 1型糖尿病和2型糖尿病,最主要的代谢紊乱是高血糖,长期高血糖可导致B细胞功能损害,使其分泌胰岛索的能力下降。高血糖作为糖尿病的一种主要代谢异常.可引起广泛的周围组织、器官损伤,并参与糖尿病慢性并发症的形成。近期的研究表明,高血糖对胰岛B细胞本身功能可产生多方面影响,可进一步加重糖尿病时B细胞功能缺陷。 展开更多
关键词 高血糖 胰岛B细胞功能损伤 糖尿病 胰岛素基因转录障碍 胰岛素分泌功能缺陷
下载PDF
诱导多功能干细胞治疗脊髓损伤的现状及思考 被引量:2
6
作者 刘文骏 张辉 尹宗生 《中国组织工程研究》 CAS CSCD 2013年第27期5094-5100,共7页
背景: 目前对脊髓损伤的治疗方法有激素冲击治疗,急诊手术减压及最新发展的干细胞治疗等方法。已有大量工作聚焦于干细胞治疗脊髓损伤的研究方面,并已成为热点。目的: 综述诱导多功能干细胞治疗脊髓损伤的相关研究现状及未来发展趋势。... 背景: 目前对脊髓损伤的治疗方法有激素冲击治疗,急诊手术减压及最新发展的干细胞治疗等方法。已有大量工作聚焦于干细胞治疗脊髓损伤的研究方面,并已成为热点。目的: 综述诱导多功能干细胞治疗脊髓损伤的相关研究现状及未来发展趋势。方法: 应用计算机检索PubMed数据库1980年1月至2012年12月期间的相关文章,检索关键词为"spine injury,induced pluripotent stem cells,IPS"。结果与结论: 共纳入35篇文章,均就诱导多能干细胞治疗脊髓损伤持赞同或支持态度。结果表明,诱导多功能干细胞直接来源于自体分离得到,解决了干细胞移植中伦理以及道德等问题,同时避免了异体排斥反应也为移植提供了大量的细胞来源。对于脊髓损伤的治疗方面目前只有动物实验及少量临床实验支持,但其在动物实验中效果良好,安全性较高。诱导多功能干细胞治疗脊髓损伤现存的问题主要是诱导多功能干细胞的诱导分化方法不成熟,并发症也较多。因此,诱导多功能干细胞的诱导分化及使用安全性将成为研究关键。 展开更多
关键词 细胞 细胞学术探讨骨髓干细胞脊髓损伤诱导多功能细胞并发症脊髓移植国家自然科学基金
下载PDF
2型糖尿病患者血清可溶性细胞间粘附分子1水平变化及与血管内皮功能的关系 被引量:16
7
作者 黄雌友 姚伟峰 《中国动脉硬化杂志》 CAS CSCD 2006年第2期153-155,共3页
目的研究2型糖尿病患者血清可溶性细胞间粘附分子1水平的变化,并以血浆假性血友病因子水平作为内皮功能损伤的指标,观察细胞间粘附分子1与血管内皮细胞功能损伤之间的关系。方法62例2型糖尿病患者按照有无血管并发症分为无血管病变组(n=... 目的研究2型糖尿病患者血清可溶性细胞间粘附分子1水平的变化,并以血浆假性血友病因子水平作为内皮功能损伤的指标,观察细胞间粘附分子1与血管内皮细胞功能损伤之间的关系。方法62例2型糖尿病患者按照有无血管并发症分为无血管病变组(n=19)、微血管病变组(n=20)和大血管病变组(n=23),选择20例健康者作为对照组。应用酶联免疫吸附法检测各组患者血清可溶性细胞间粘附分子1水平和血浆假性血友病因子水平,并测定糖脂代谢指标和尿微量白蛋白水平。结果2型糖尿病患者血清可溶性细胞间粘附分子1水平明显高于健康对照组(P<0.01),在无血管病变组、微血管病变组和大血管病变组的水平逐步升高(P<0.01);血浆假性血友病因子水平在大血管病变组高于微血管病变组,微血管病变组高于无血管病变组(P<0.01),无血管病变组与对照组间无显著性差异。可溶性细胞间粘附分子1与血浆假性血友病因子、甘油三酯、收缩压、舒张压呈正相关(r分别为0.43、0.45、0.52和0.62,P<0.01)。结论细胞间粘附分子1可能参与了2型糖尿病血管病变的发生和发展,可作为早期2型糖尿病患者慢性血管并发症尤其是大血管病变发生的预测及监测指标。 展开更多
关键词 内科学 细胞间粘附分子1与血管内皮细胞功能损伤之间的关系 酶联免疫吸附法 可溶性细胞间粘附分子1 2型糖尿病 血管病变
下载PDF
人脐静脉内皮细胞胰岛素抵抗细胞模型的建立及胰岛素抵抗脐静脉内皮细胞内皮功能损伤机制的研究
8
作者 钟幸 胡玲玲 +1 位作者 马慧 包明威 《湖南中医药大学学报》 CAS 2016年第A01期502-503,共2页
目的分析高浓度胰岛素对血管内皮细胞急性时相蛋白表达的影响,为探讨胰岛素抵抗对血管内细胞损伤的可能机制及筛选改善胰岛素抵抗(IR)药物提供依据;方法采用高浓度胰岛素体外诱导培养法建立人脐静脉内皮细胞IR模型,应用ELISA法检测C-... 目的分析高浓度胰岛素对血管内皮细胞急性时相蛋白表达的影响,为探讨胰岛素抵抗对血管内细胞损伤的可能机制及筛选改善胰岛素抵抗(IR)药物提供依据;方法采用高浓度胰岛素体外诱导培养法建立人脐静脉内皮细胞IR模型,应用ELISA法检测C-反应蛋白以及血浆vWF 因子的表达,应用化学比色法检测培养液中 NO的浓度,应用流式细胞仪检测各组细胞胰岛素受体的表达;结果当胰岛素浓度为10U/L 时,C-反应蛋白以及vWF 表达上升,而细胞活性下降,NO产生减少,胰岛素受体表达降低,但均不具有统计学意义.随着胰岛素浓度的增加,C-反应蛋白以及vWF 表达明显增加,而细胞活性、NO的产生以及胰岛素受体表达则明显下降,P〈0.05,具有统计学意义;结论胰岛素抵抗能够降低血管内皮细胞炎性蛋白的表达平衡,进而降低了血管内皮生物学的活性,证明其在血管疾病的发生、发展过程中有着重要的病理意义. 展开更多
关键词 胰岛素抵抗脐静脉内皮细胞损伤机制内皮功能
下载PDF
Protection against hepatic ischemia/reperfusion injury via downregulation of toll-like receptor 2 expression by inhibition of Kupffer cell function 被引量:9
9
作者 Jin-Xiang Zhang He-Shui Wu +3 位作者 Yang Wang Hui Wang Jin-Hui Zhang Qi-Chang Zheng 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第28期4423-4426,共4页
AIM: To elucidate the mechanism of liver protection by inhibition of Kupffer cells (KCs) function.METHODS: All the animals were randomly divided into three groups. Blockade group (gadolinium chloride solution (G... AIM: To elucidate the mechanism of liver protection by inhibition of Kupffer cells (KCs) function.METHODS: All the animals were randomly divided into three groups. Blockade group (gadolinium chloride solution (GdCl3) injection plus ischemia/reperfusion (I/R) injury):GdCl3 solution was injected once every 24 h for 2 d via the tail vein before I/R injury. Non-blockade group (saline solution injection plus I/R injury): saline instead of GdCl3 as a control was injected as in the blockade group. Sham group: saline was injected without I/R injury. Liver samples were collected 4 h after blood inflow restoration. The blockade of the function of KCs was verified by immunostaining with an anti-CD68 mAb. Toll-like receptor2 (TLR2) was immunostained with a goat antimouse polydonal anti-TLR2 antibody. Membrane proteins were extracted from the liver samples and TLR2 protein was analyzed by Western blot. Portal vein serum and plasma were taken respectively at the same time point for further detection of the levels of tumor necrosis factor-α (TNF-α) and alanine aminotransferase (ALT), an indicator of liver function.I/R injury via downregulation of theexpression of TLR2.RESULTS: Compared to non-blockade group, CD^68+ cells significantly reduced in blockade group (OPTDI, optical density integral): 32.97±10.55 vs 185.65±21.88, P〈0.01) and the liver function impairment was relieved partially (level of ALT: 435.89±178.37 U/L vs 890.21±272.91 U/L,P〈0.01). The expression of TLR2 protein in blockade group significantly decreased compared to that in non- group(method of immunohistochemistry, OPDTI: 75.74±17.44 vs 170.58±25.14, P〈0.01; method of Western blot, A value: 125.89±15.49 vs 433.91±35.53, P〈0.02). The latter correlated with the variation of CD68 staining (r = 0.745,P〈0.05). Also the level of portal vein TNF-α decreased in blockade group compared to that in non-blockade group (84.45±14.73 ng/L vs 112.32±17.56 ng/L, P〈0.05), butwas still higher than that in sham group (84.45±14.73 ng/L vs 6.07±5.33 ng/L, P〈0.01).CONCLUSION: Inhibition of the function of KCs may protect liver against I/R injury via downregulation of the expression of TLR2. 展开更多
关键词 Toll-like receptor 2 Reperfusion injury Kupffer cell LIVER
下载PDF
Damaging effects of gliadin on three-dimensional cell culture model
10
作者 Ersilia Dolfini Luca Elli +8 位作者 Leda Roncoroni Barbara Costa Maria Pia Colleoni Vito Lorusso Simona Ramponi Paola Braidotti Stefano Ferrero Maria Letizia Falini Maria Teresa Bardella 《World Journal of Gastroenterology》 SCIE CAS CSCD 2005年第38期5973-5977,共5页
AIM: To evaluate the effects of gliadin on the oxidative environment in the “in vivo-like”model of a three-dimensional cell culture system. METHODS: LoVo cell line (intestinal adenocarcinoma) multicellular spher... AIM: To evaluate the effects of gliadin on the oxidative environment in the “in vivo-like”model of a three-dimensional cell culture system. METHODS: LoVo cell line (intestinal adenocarcinoma) multicellular spheroids were treated with digested gliadin (with albumin used as a control). Spheroid volumes, cell viability and morphology, lactate dehydrogenase (LDH) release, content of reduced glutathione (GSH) and activity of GSH-related enzymes were examined. The data were statistically analyzed using the Student's t-test (P〈0.05). was considered statistically significant. RESULTS: Gliadin reduced cell viability (from 20% to 60%) and led to morphological alterations characterized by apoptotic findings and cytoskeletal injuries. LDH activity increased. The content of GSH reduced (-20% vscontrols), and activity of GSH-related enzymes was significantly inhibited. CONCLUSION: Gliadin treatment induces an imbalance in the antioxidative mechanism of cells cultured by the three-dimensional technique. This alteration may explain cell damage directly caused by gliadin and the subsequentmorphological abnormalities. 展开更多
关键词 GLIADIN Celiac disease CYTOTOXICITY Multicellular spheroids
下载PDF
Xuebijing injection alleviates liver injury by inhibiting secretory function of Kupffer cells in heat stroke rats 被引量:15
11
作者 Yi Chen Huasheng Tong +5 位作者 Xingqin Zhang Liqun Tang Zhiguo Pan Zhifeng Liu Pengkai Duan Lei Su 《Journal of Traditional Chinese Medicine》 SCIE CAS CSCD 2013年第2期243-249,共7页
OBJECTIVE: To evaluate the effects of Xuebijing (XBJ) injection in heat stroke (HS) rats and to inves- tigate the mechanisms underlying these effects. METHODS: Sixty anesthetized rats were random- ized into thre... OBJECTIVE: To evaluate the effects of Xuebijing (XBJ) injection in heat stroke (HS) rats and to inves- tigate the mechanisms underlying these effects. METHODS: Sixty anesthetized rats were random- ized into three groups and intravenously injected twice daily for 3 days with 4 mL XBJ (XBJ group) or phosphate buffered saline (HS and Sham groups) per kg body weight. HS was initiated in the HS and XBJ groups by placing rats in a simulated climate chamber (ambient temperature 40℃:, humidity 60% ). Rectal temperature, aterial pressure, and heart rate were monitored and recorded. Time to HS onset and survival were determined, and serum concentrations of tumor necrosis factor (TNF)-α, in-terleukin (IL)-1β, IL-6, alanine-aminotransferase (ALT), and aspartate-aminotransferase (AST) were measured. Hepatic tissue was harvested for patho- logical examination and electron microscopic ex- amination. Kupffer cells (KCs) were separated from liver at HS initiation, and the concentrations of se- creted TNF-α, IL-1β3 and IL-6 were measured. RESULTS: Time to HS onset and survival were signif- icantly longer in the XBJ than in the HS group. Moreover, the concentrations of TNF-α, IL-1β, IL-6, ALT and AST were lower and liver injury was milder in the XBJ than in the HS group. Heat-stress in- duced structural changes in KCs and hepatic cells were more severe in the HS than in the XBJ group and the concentrations of TNF-α, IL-1β and IL-6 se- creted by KCs were lower in the XBJ than in the HS group. CONCLUSION: XBJ can alleviate HS-induced sys- temic inflammatory response syndrome and liver injury in rats, and improve outcomes. These protec- tive effects may be due to the ability of XBJ to inhib- it cytokine secretion by KCs. 展开更多
关键词 Heat stroke Kupffer cells Systemic in-flammatory response syndrome XUEBIJING Liver in-jury Inflammatory cytokines
原文传递
Stem cells modified by brain-derived neurotrophic factor to promote stem cells differentiation into neurons and enhance neuromotor function after brain injury 被引量:24
12
作者 张赛 刘晓智 +4 位作者 刘振林 王延民 胡群亮 马铁柱 孙世中 《Chinese Journal of Traumatology》 CAS 2009年第4期195-199,共5页
Objective: To promote stem cells differentiation into neurons and enhance neuromotor function after brain injury through brain-derived neurotrophic factor (BDNF) induction. Methods: Recombinant adenovirus vector ... Objective: To promote stem cells differentiation into neurons and enhance neuromotor function after brain injury through brain-derived neurotrophic factor (BDNF) induction. Methods: Recombinant adenovirus vector was applied to the transfection of BDNF into human-derived umbilical cord mesenchymal stem cells (UCMSCs). Enzyme linked immunosorbent assay (ELISA) was used to determine the secretion phase of BDNF. The brain injury model of athymic mice induced by hydraulic pressure percussion was established for transplantation of stem cells into the edge of injury site. Nerve function scores were obtained, and the expression level of transfected and non-transfected BDNF, proportion of neuron specific enolase (NSE) and glial fibrillary acidic protein (GFAP), and the number of apoptosis cells were compared respectively. Results: The BDNF expression achieved its stabilization at a high level 72 hours after gene transfection. The mouse obtained a better score of nerve function, and the proportion of the NSE-positive cells increased significantly (P〈0.05), but GFAP-positive cells decreased in BDNF- UCMSCs group compared with the other two groups (P〈0.05). At the site of high expression of BDNF, the number of apoptosis cells decreased markedly. Conclusion: BDNF gene can promote the differentiation of the stem cells into neurons rather than glial cells, and enhance neuromotor function after brain injury. 展开更多
关键词 Brain-derivedneurotrophicfactor Stem cells Cell differentiation Brain injuries
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部