Effects of Intraseasonal Oscillation on the Anomalous East Asian Summer Monsoon During 1999
211108264_杏仁核SIRT1对慢性束缚应激大鼠抑郁样行为的影响
杏仁核SIRT1对慢性束缚应激大鼠抑郁样行为的影响黄彩云1,陈那娜1,周 菲1,张红梅2,杨小荣1△(1.山西医科大学生理学系,细胞生理学教育部重点实验室,太原030001;2.山西医科大学公共卫生学院环境卫生学教研室,太原030001)【摘要】 目的:观察杏仁核沉默信息调节因子1(SIRT1)蛋白对慢性束缚应激(CRS)大鼠抑郁样行为的影响。
方法:60只SD雄性大鼠随机分为6组(n=10):正常对照组(Control)、慢性束缚应激组(CRS)、CRS+氟西汀(FLU)组(CRS+FLU)、CRS+生理盐水组(CRS+NaCl)、CRS+SIRT1过表达组(CRS+AAV SIRT1)和CRS+空载体组(CRS+AAV EGFP)。
除了正常对照组,其余各组均接受慢性束缚应激造模21d。
造模结束后,氟西汀组和生理盐水组大鼠每天分别灌胃给予氟西汀(10mg/kg)或生理盐水(10mg/kg),持续3周;SIRT1过表达组和空载体组大鼠分别脑立体定位,注射腺相关病毒AAV SIRT1或AAV EGFP于杏仁核,待病毒表达3周;正常组和抑郁症组大鼠则不给予任何药物。
应用糖水偏好实验(SPT)、旷场实验(OFT)和强迫游泳实验(FST)检测各组大鼠的抑郁样行为学变化;蛋白免疫印迹实验检测大鼠杏仁核中SIRT1蛋白的表达;免疫荧光技术检测大鼠杏仁核中SIRT1阳性细胞数量。
结果:与正常对照组相比,CRS抑郁大鼠杏仁核中SIRT1蛋白水平和SIRT1阳性细胞数显著降低(P<0.01),糖水偏好程度明显降低(P<0.01),旷场实验中运动总距离和中心停留时间显著缩短(P<0.01),强迫游泳不动时间明显延长(P<0.01)。
氟西汀治疗或SIRT1过表达均可以部分逆转CRS大鼠杏仁核SIRT1蛋白和SIRT1阳性细胞数的下调(P<0.05,P<0.01),并且可以显著改善上述抑郁样行为。
结论:氟西汀治疗可以部分逆转CRS大鼠下调的SIRT1蛋白及SIRT1阳性细胞数,同时显著改善抑郁样行为,其抗抑郁疗效可能与CRS大鼠杏仁核中SIRT1蛋白的上调有关。
热带天气动力学期末复习
1.低纬大尺度大气运动的特点(What are the characteristics of large-scale atmospheric motions on the low latitude?)从动力学角度而言,由于低纬度地区柯氏参数很小甚至趋于零,那里的大气必然会强烈地反映出f趋于零时的运动特征。
从大气的热状况而言,大气的实测温度分布也有其纬度特点:中高纬地区存在着较强的经向温度梯度,大气是斜压的;在低纬度地区温度分布均匀,其径向梯度很小,大气近于正压。
热带低纬度地区,潜热释放是驱动热带地区环流系统的主要能源。
故:控制或影响低纬度大气动力学的基本因子中,有两个较为重要的因子:0效应和凝结潜热释放低纬度:f很小,不能满足地转风关系,天气尺度系统具有非地转特征,行星尺度运动具有准地转特征.科里奥利参数很小,气压场的水平梯度比在中、高纬度地区要小,流场的水平差异却十分明显.一个天气系统的发生,往往先出现流场的涡旋,辐合和辐散,以及风的水平切变和铅直切变,气压场则只有当产生强烈的对流运动后,特征才逐渐明显.同中,高纬地区相比,热带流场的变化显得更为重要.凝结潜热效应:对垂直运动和散度场具有显著影响.热带大气中凝结潜热的释放对大尺度运动系统的水平散度和垂直速度有显著的影响.2. ENSO? ENSO的几种理论机制及其优缺点。
(1)定义厄尔尼诺:表示在南美西海岸(秘鲁和厄瓜多尔附近)延伸至赤道东太平洋向西至日界线(180。
)附近的海面温度异常增温现象。
南方涛动:指南太平洋副热带高压与印度洋赤道低压这两大活动中心之间气压变化的负相关关系。
即南太平洋副热带高压比常年增高(降低)时,印度洋赤道低压就比常年降低(增高),两者气压变化有“跷跷板”现象,称之为涛动。
发生厄尔尼诺/南方涛动合称为ENSO。
(2)理论机制①延迟振子理论:延迟振荡机制假设:海洋东半部的动力调节影响海水表面温度,相对的改变随后输送至表面混合层的水温。
电针对切口痛大鼠的镇痛效应和背根神经节瞬时受体电位香草酸亚型1表达的影响要点
TRPVl,Navl.7 and Navl.8 at 48 h after modeling were down—regulated in DRG in EA group(P<
0.05).Conclusion
EA could produce analgesic effect
on
post—operation pain in the
a
g彻lg]ion
transient receptor po-
tential vanilloid 1 expression in
rat model ofincision palm
Wang施,l,Zhu Zhongqiang,Wang Ke,
of Integrative Medwine Surgery,Shuguang Hospital Affdiuted to Shanghai Univers妨of Tradi- Medwine,Shanghai 201203,China(Wang X,Wang K);Department ofSwgery,Shugnang Hospital Affiliated to Shanghai University of Traditional Chinese Medwine,Shanghai 201203,China(Zhu ZQ,Feng Y) Corresponding author:Wang Ke,Email:wangke8430@163.corn;Feng Yu,Email:davisfy@126.coin 【Abstract】 Objective To investigate the effects of electroacupucnture(EA)on the postoperative。 and the expression of transient receptor potential vanilloid 1(TRPVl)and related downstream effeetors pain of dorsal root ganglion(DRG)in the rat model of incisional pain.Methods Thirty adult male Spree— Dawley rats were randomly divided into 3 groups(n=10 each):control group(C group),incision group
鼠尾草酸对葡聚糖硫酸钠诱导的小鼠溃疡性结肠炎的改善作用
鼠尾草酸对葡聚糖硫酸钠诱导的小鼠溃疡性结肠炎的改善作用焦鑫鑫1,许敏2,吴华1,刘梓萱1,肖俊松2*(1.北京工商大学化学与材料工程学院,北京100048)(2.北京市食品添加剂工程技术研究中心(北京工商大学),北京100048)摘要:研究了鼠尾草酸(CA)对葡聚糖硫酸钠(DSS)诱导的小鼠溃疡性结肠炎(UC)的改善作用。
小鼠自由饮用含3% DSS的蒸馏水,连续7 d造模。
将60只小鼠随机分为5组:空白对照组(CK)、DSS模型组(DSS)、鼠尾草酸低剂量组(CAL)、鼠尾草酸高剂量组(CAH)、美沙拉嗪组(PC)。
通过小鼠体质量变化、疾病活动指数(DAI)评分、结肠组织病理学和肠道通透性变化评估CA对UC小鼠的干预作用。
通过测定结肠组织髓过氧化物酶(MPO)活性、超过氧化物歧化酶(SOD)活性、丙二醛(MDA)含量、紧密连接蛋白ZO-1和Occludin的表达及肠道菌群组成的变化探讨可能的影响机制。
与DSS组相比,CA干预降低了UC小鼠的质量损失和DAI评分、改善了结肠组织病理损伤。
同时,CAL和CAH组结肠组织MPO活性显著降低、MDA含量分别降低了13.75%、70.00%(P<0.05),SOD活性分别升高了6.12倍、9.62倍(P<0.05),肠道通透性显著降低、ZO-1和Occludin蛋白的表达得到恢复。
50 mg/kg m b的CA灌胃提高了厚壁菌门和拟杆菌门的丰度比值,恢复了DSS诱导的UC小鼠中Akkermansia等有益菌属的丰度下降,降低了Alistipes等有害菌属的相对丰度。
CA对UC具有良好的改善作用,其机制可能与降低氧化应激水平、保护肠屏障和调控肠道微生物组成有关。
关键词:鼠尾草酸;溃疡性结肠炎;氧化应激;肠道通透性;肠道菌群文章编号:1673-9078(2024)03-18-27 DOI: 10.13982/j.mfst.1673-9078.2024.3.0353Ameliorative Effects of Carnosic Acid on Dextran SulfateSodium-induced Ulcerative Colitis in MiceJIAO Xinxin1, XU Min2, WU Hua1, LIU Zixuan1, XIAO Junsong2*(1.College of Chemistry and Materials Engineering, Beijing Technology and Business University, Beijing 100048, China) (2.Beijing Engineering and Technology Research Center of Food Additives (Beijing Technology and BusinessUniversity), Beijing 100048, China)Abstract: The ameliorative effects of carnosic acid (CA) on dextran sodium sulfate (DSS)-induced ulcerative colitis (UC) in mice were assessed. Ulcerative colitis was induced by the oral administration of 3% DSS via distilled drinking water引文格式:焦鑫鑫,许敏,吴华,等.鼠尾草酸对葡聚糖硫酸钠诱导的小鼠溃疡性结肠炎的改善作用[J] .现代食品科技,2024, 40(3):18-27.JIAO Xinxin, XU Min, WU Hua, et al. Ameliorative effects of carnosic acid on dextran sulfate sodium-induced ulcerative colitis in mice [J] . Modern Food Science and Technology, 2024, 40(3): 18-27.收稿日期:2023-03-25基金项目:北京市自然科学基金资助项目(6212002);北京市教委一般项目(KM202010011010)作者简介:焦鑫鑫(1997-),女,研究生,研究方向:芳香植物的综合利用,E-mail:通讯作者:肖俊松(1980-),男,博士,副教授,研究方向:多酚及其代谢产物对代谢综合症的干预机制,E-mail:18for seven days. A total of 60 mice were randomly divided into five groups: blank control (CK), DSS model (DSS), low-dose carnosic acid (CAL), high-dose carnosic acid (CAH), and mesalazine (PC). The ameliorative effects of CA were evaluated based on body weight, disease activity index (DAI) score, colonic histopathology, and changes in intestinal permeability. To investigate the possible mechanism of CA, the activities of myeloperoxidase (MPO) and superoxide dismutase (SOD), the level of malondialdehyde (MDA), the expression level of tight junction proteins, including ZO-1 and occludin, and the changes in intestinal flora in mice were examined. When the CA and DSS groups were compared, CA intervention was found to reduce weight loss and the DAI score and ameliorate the pathological damage in colonic tissues in UC mice. The MPO activity was also found to significantly decrease in the CA groups. The MDA content in the colon tissue was reduced by 13.75% and 70%, respectively (P<0.05), while the SOD activity increased by 6.12- and 9.62-fold, respectively (P<0.05), in the CAL and CAH groups. Notably, the intestinal permeability was significantly reduced, and the expression levels of ZO-1 and occludin were restored. Gavage of 50 mg/kg CA enhanced the abundance ratios of Firmicutes and Bacteroides and restored the decrease in the abundance of beneficial bacteria, such as Akkermansia,caused by DSS. The relative abundance of detrimental bacteria, such as Alistipes, was also reduced. Overall, CA may mitigate UC by lowering the levels of oxidative stress, protecting the intestinal barrier, and regulating the composition of the intestinal microbial community.Key words: carnosic acid; ulcerative colitis; oxidative stress; intestinal permeability; intestinal flora溃疡性结肠炎(Ulcerative Colitis,UC)是一种以腹部疼痛、体重下降、出血性腹泻、粪便隐血为主要特征的慢性肠道炎症性疾病[1] 。
热带天气动力学期末复习
1.低纬大尺度大气运动的特点(What are the characteristics of large-scale atmospheric motions on the low latitude?)从动力学角度而言,由于低纬度地区柯氏参数很小甚至趋于零,那里的大气必然会强烈地反映出 f 趋于零时的运动特征。
从大气的热状况而言,大气的实测温度分布也有其纬度特点:中高纬地区存在着较强的经向温度梯度,大气是斜压的;在低纬度地区温度分布均匀,其径向梯度很小,大气近于正压。
热带低纬度地区,潜热释放是驱动热带地区环流系统的主要能源。
故:控制或影响低纬度大气动力学的基本因子中,有两个较为重要的因子:β效应和凝结潜热释放低纬度:f 很小,不能满足地转风关系,天气尺度系统具有非地转特征,行星尺度运动具有准地转特征.科里奥利参数很小,气压场的水平梯度比在中、高纬度地区要小,流场的水平差异却十分明显.一个天气系统的发生,往往先出现流场的涡旋,辐合和辐散,以及风的水平切变和铅直切变,气压场则只有当产生强烈的对流运动后,特征才逐渐明显.同中,高纬地区相比,热带流场的变化显得更为重要.凝结潜热效应:对垂直运动和散度场具有显著影响.热带大气中凝结潜热的释放对大尺度运动系统的水平散度和垂直速度有显著的影响.2.ENSO? ENSO的几种理论机制及其优缺点。
(1)定义厄尔尼诺:表示在南美西海岸(秘鲁和厄瓜多尔附近)延伸至赤道东太平洋向西至日界线(180。
)附近的海面温度异常增温现象。
南方涛动:指南太平洋副热带高压与印度洋赤道低压这两大活动中心之间气压变化的负相关关系。
即南太平洋副热带高压比常年增高(降低)时,印度洋赤道低压就比常年降低(增高),两者气压变化有“跷跷板”现象,称之为涛动。
发生厄尔尼诺/南方涛动合称为ENSO。
(2)理论机制①延迟振子理论:延迟振荡机制假设:海洋东半部的动力调节影响海水表面温度,相对的改变随后输送至表面混合层的水温。
七叶皂苷钠调控SIRT1
七叶皂苷钠调控SIRT 1/NF-κB 信号通路对帕金森病大鼠的神经保护作用Δ周慧敏*,陈静,欧诒丹,王御林,钟纯正 #(儋州市人民医院神经内科,海南 儋州 571700)中图分类号 R 965 文献标志码 A 文章编号 1001-0408(2024)06-0689-06DOI 10.6039/j.issn.1001-0408.2024.06.09摘要 目的 探究七叶皂苷钠通过调控沉默信息调节因子1(SIRT 1)/核因子κB (NF-κB )信号通路发挥对帕金森病大鼠的神经保护作用。
方法 采用6-羟基多巴胺注射法构建帕金森病大鼠模型,将建模成功的48只大鼠随机分为模型组、七叶皂苷钠低剂量组(1.8 mg/kg )、七叶皂苷钠高剂量组(3.6 mg/kg )、七叶皂苷钠+EX 527组(七叶皂苷钠3.6 mg/kg+SIRT 1抑制剂EX 527 5 mg/kg ),每组12只;另取12只健康大鼠作为假手术组。
各药物组大鼠腹腔注射相应药液,每天1次,持续21 d 。
末次给药结束24 h 后,检测大鼠运动及认知功能,观察其黑质区和海马组织CA 1区神经元形态,检测其黑质纹状体中多巴胺(DA )含量和黑质区酪氨酸羟化酶(TH )、α突触核蛋白(α-Syn )表达水平,检测其血清中促炎因子[白细胞介素6(IL-6)、IL-18]、抗炎因子(IL-10)水平及黑质纹状体中SIRT 1、磷酸化NF-κB p 65(p-NF-κB p 65)、NF-κB p 65蛋白表达水平。
结果 与假手术组比较,模型组大鼠黑质区和海马组织CA 1区神经元损伤严重;其旋转圈数、逃避潜伏期、黑质区α-Syn 蛋白表达水平、血清中促炎因子水平、黑质纹状体中p-NF-κB p 65与NF-κB p 65蛋白的相对表达量之比均显著升高或延长(P <0.05),目标象限停留时间、黑质纹状体中DA 含量及黑质区TH 蛋白表达水平、血清中抗炎因子水平、黑质纹状体中SIRT 1蛋白表达水平均显著缩短或降低(P <0.05)。
优思弗辅助阿拓莫兰治疗婴儿胆汁淤积症的效果
2019,14(8):2109-2112.)2**阿地力江・ ,周文婷,艾尼瓦尔•吾买尔•糖原合基金项目"017年 市卫生计生委青年人才科技项目(编号:QN201725)作者简介:刘晖,女,硕士,副主任医师*通信作者:吴薇,女,硕士,副主任医师激酶3激与 茨海默病中的 西北药学杂志,2019,34(6):838844.)3*任,苏志强,沈翠茹•轻型脑卒中后认知功能障碍的相关研究进展)*.卒中与神经疾病,2019,26 (3): 367-370)4* Nurcan Yurtsever Kum,Yavuz F Ylmaz,Seren G Gur gen etal E f ectsofparenteralpapaverineandpiracetamadministration on cochlea following acoustic trauma)*. Noise Health 2018 20(93):47-52()5*张露,白强黎,辜超(艮杏合前列地尔治疗血管性痴呆的临床研究)*.现代药物与临床,2019,34(7): 1984-1987()16* Wei Zhang $Linjing Shi $Hao Zhang $et al(E f ect of al-prostadil on serum level of miRNA-155in uremicpa-tients )J *(Zhong Nan Da Xue Xue Bao Yi Xue Ban $ 2015 40(7):735-741()17* Khaled Habas $Lijun Shang(Alterations in interce l ularadhesion molecule1 (ICAM-1) andvascularce l adhe- sion molecule 1 (VCAM-1) in human endothelial ce l s )J *(TissueCe l 2018 54:139-143()8*周兴盛,高山,王京娥,等(半认知功能障碍脑梗死患者血清可溶性细胞间黏附分子1水平与认知功能损害的关系)*.广西医学 2019,41(17)=2171-21732190.)9* Shan Wang,Xiaowei Zhang,Liuyu Zhai,et al Atorvasta-tina t enuatescognitive deficitsand neuroinflammation induced by A "1-42 involving modulation of TLR4/TRAF6/NF-k B pathway [J *. J Mol Neurosci , 2018, 64(3):363-373()0*郑乃智,王敏,赵娟,等.淀粉样蛋白与癫痼合并阿尔茨海默病大鼠模型的神经网络和病理学相关性研究)*.中国临床神经科学201927(3):252-25 8.(收稿日期"020-05-16)优思弗辅助阿拓莫兰治疗婴儿胆汁淤积症的效果刘 晖】,徐 岳2,吴 薇3*(1.南通大学附属常州儿童医院消化感染科,常州2130032南通大学附属常州儿童医院儿童内镜中心,常州 213003 '.南通大学附属常州儿童医院新生儿科,常州213003)摘要:目的分析优思弗辅助阿拓莫兰对婴儿胆汁淤积症(IC )临床症状与肝功能的改善效果@及毒性和不良反应发生情况9(响°方法 选取78例IC 婴儿,按照入院ID 采用随机数字表法均分为对照组和观察组,每组39例"除了针对原发病9治疗外, 对照组给予优思弗和门冬氨酸钾钱治疗,观察组给予优思弗辅助阿拓莫兰治疗,疗程为14 d "分析2组患儿在治疗过程中9临 床症状评分、临床治疗效果、肝功能指标[谷丙转氨酶(ALT )、总胆红素(TBIL )、直接胆红素(DBIL )、总胆汁酸(TBA )、1-谷氨酰移酶(1-GGT )、谷草酶(AST )和碱 酶(ALP )]、肝纤4项[透明质酸(HA )、4(LN )、m 型前胶9 (PC ,)及N 型胶原(c.)]水平以及毒性和不良反应发生情况°结果 治疗14 d 后,观察组患儿9临床总有效率(89.74 %)明显高于对照组(71. 79%),3<0.05"治疗前,2组患儿9各项临床症状评分、肝功指标比较差异无统计学•义(3>0. 05);治疗14d 后,2 组患儿9各项临床症状评分均明显降低(3<0.05),且观察组9各项临床症状评分均明显低于对照组(3<0.05) 治疗7,14 d 后,2组患儿9肝功指标ALT 、ALP 、AST 、TBIL 、DBIL 、TBA 和r-GGT 水平均明显降低,且观察组9以上各项肝功指标水平均明 显低于对照组(3<0. 05) 治疗14d 后,2组患儿9 LN 水平比较差异无统计学•义(3>0. 05);组患儿9 HA 、PC ,及c .水平均明显降低,且观察组9 HA 、PC ,和c .水平低于对照组(3<0.05) 观察组患儿9毒性和不良反应发生率为12.82%,明显低于对照组9 33. 33 %(3<0.05) 结论 优思弗辅助阿拓莫兰治疗IC 患儿9临床效果明显,可有效恢复肝功能,改善临床症状,且毒性和不良反应低°关键词:阿拓莫兰;优思弗;婴儿胆汁淤积症;肝功能;毒性和不良反应DOI :10. 3969/j. issn. 1004-2407. 2021. 01. 027中图分类号:R985文献标志码:A 文章编号=1004-2407(2021)01-0126-05Clinical effect of Yousifu-assisted atomolan in the treatment of infantile cholestasssLIU Hui 】,XU Yue 2 ,WU Wei 3* (1. Department of Digestive Infection , Affiliated Changzhou Children's Hospital of Nantong Un--versity,Changzhou 213003 ,China 2 Pediatric Endoscopy Center , Affiliated Changzhou Children's Hospital of Nantong Univers--ty,Changzhou 213003 , China ; 3. Department of Neonatology, Affiliated Changzhou Children z s Hospital of Nantong University, Changzhou213003$China )Abstract : To analyze the effect of Yousifu-assisted atomolan on the clinical symptoms, liver function improvement andtoxicity and adverse reactions of infantile cholestasis (IC ).78 infants with IC were randomly divided into control groupand observat-on group accord-ng to the random number table of adm-ss-on ID 39 cases-n each group. In add-t on to the treatmentfor the primary disease,the control group was given the treatment of Yousifu and magnesium asparate potassium ,and the observa-tion group was given Yisifu-assisted atomolan.The course of treatment was14 d.The clinical symptom score,clinical treatment effect,liver function index[alanine aminotransferase(ALT),total bilirubin(TBIL),direct bilirubin(DBIL),total bile acid (TBA),■/-glutamyltransferase(y-GGT),aspartate aminotransferase(AST),alkaline phosphatase(ALP)),4items of liver fiber [hyaluronic acid(HA),laminin(LN),procollagen,(PC,)and collagen.(c.)and toxicity and adverse reactions were analyzed.After14d of treatment,the total clinical effective rate of the observation group was89.74%,which was significantly higher than that of the control group(71.79%)(P<0.05).Before treatment,there was no significant difference in clinical symptom scores and liver function indexes between the2groups(P〉0.05).After14d of treatment,the clinical symptom scores of the2groups were significantly lower(P<0.05),the clinical symptom scores of the observation group were significantly lower than the control group(P<0.05).After7d and14d of treatment,the liver function indexes of ALT,ALP,AST,TBIL, DBIL,TBA and r-GGT were significantly lower in the2groups,the above indicators of liver function in the observation group were significantly lower in the control group(P<0.05).After14d of treatment,there was no significant difference in LN level between the2groups(P〉0.05),while the levels of HA,PC,and c.in the2groups were significantly lower,the levels of HA,PC,and c.in the observation group were lower than those in the control group(P<0.05).The incidence of toxicity and adverse reactions in the observation group was12.82%,which was significantly lower than that in the control group(33.33%)(P <0.05).The clinical effect of Yousifu-assisted atomolan in the treatment of children with IC is obvious,it can effectively restore liver function,improve clinical symptoms,and shows low toxicity and adverse reactions.Key words:atomolan;Yousifu;infantile cholestasis;liver function;toxicity and adverse reactions婴儿胆汁淤积症(IC)是由于婴儿胆汁生成障碍或/和胆汁流动障碍所致的一种疾病,又名胆汁淤积综合征,是新生儿或婴儿常见的病症。
半夏提取物通过AMPK
doi:10.3969/j.issn.1000-484X.2023.12.019半夏提取物通过AMPK/FOXO3a信号通路对哮喘大鼠气道平滑肌细胞增殖、凋亡的影响黄丽萍郭腾飞①张文青②(东莞职业技术学院卫生健康学院,东莞 523000)中图分类号R562.2 R285.5 文献标志码 A 文章编号1000-484X(2023)12-2571-06[摘要]目的:探讨半夏提取物(EP)对哮喘大鼠气道平滑肌细胞(ASMCs)增殖、凋亡的影响及作用机制。
方法:采用卵清蛋白致敏和激发方式构建哮喘大鼠模型,分离并培养大鼠ASMCs,免疫荧光染色鉴定ASMCs中的α-肌动蛋白(α-actin),符合ASMCs特征后将ASMCs分为对照组、模型组、EP组、Compound C组、EP+Compound C组,MTT检测细胞增殖活性;流式细胞术检测细胞凋亡;ELISA检测细胞上清中炎症因子IL-6、TNF-α水平;Western blot检测细胞周期蛋白D1(CyclinD1)、增殖细胞核抗原(PCNA)、Bcl-2相关X蛋白(Bax)、Caspase-3、Cleaved-Caspase-3、腺苷酸活化蛋白激酶(AMPK)、p-AMPK、叉头框蛋白O3a(FOXO3a)、p-FOXO3a蛋白表达。
结果:免疫荧光染色显示98%细胞的细胞质中呈现绿色荧光的肌丝,α-actin呈阳性表达,证明培养的细胞为ASMCs。
与对照组比较,模型组细胞OD490、CyclinD1、PCNA蛋白表达及上清中IL-6、TNF-α水平显著升高,细胞凋亡率、Bax、Caspase-3、Cleaved-Caspase-3蛋白表达及p-AMPK/AMPK、p-FOXO3a/FOXO3a水平显著降低(P<0.05);与模型组比较,EP组细胞OD490、CyclinD1、PCNA蛋白表达及上清中IL-6、TNF-α水平显著降低,细胞凋亡率、Bax、Caspase-3、Cleaved-Caspase-3蛋白表达及p-AMPK/AMPK、p-FOXO3a/FOXO3a水平显著升高(P<0.05),而Compound C组上述对应指标呈相反趋势(P<0.05);与EP组比较,EP+Compound C组细胞OD490、CyclinD1、PCNA蛋白表达及上清中IL-6、TNF-α水平显著升高,细胞凋亡率、Bax、Caspase-3、Cleaved-Caspase-3蛋白表达及p-AMPK/AMPK、p-FOXO3a/FOXO3a水平显著降低(P<0.05)。
植物雌激素蜕皮甾酮对氧化应激状态下的晶状体上皮细胞雌激素受体表达的影响
植物雌激素蜕皮甾酮对氧化应激状态下的晶状体上皮细胞雌激素受体表达的影响张可丽;祁明信;黄秀榕;郭娜【摘要】目的研究人晶状体上皮细胞(HLEC)雌激素受体(ER)表达的情况及中药植物雌激素蜕皮甾酮(ECR)对氧化应激状态下的HLEC内ER表达的影响,为中药植物雌激素防治老年性白内障提供科学的实验依据.方法采用ECR与HLEC共同孵育,以雌二醇(E2)作为阳性对照,再用H2O2对HLEC造成氧化损伤后,采用流式细胞术(FCM)检测不同浓度(10-6、10-7 和10-8 mol/L)的ECR对ER蛋白表达的影响.结果正常HLEC内存在ERα、ERβ的表达;H2O2组HLEC内ERα、ERβ表达明显下降,分别为(21.428±1.491)%及(15.702±0.613)%,与对照组的(33.552±2.147)%及(27.208±1.633)%比较,差异有统计学意义(P<0.01).E2和ECR高中低浓度组的HLEC内ERα、ERβ表达明显升高,与H2O2组比较差异有统计学意义(P<0.01);且随ECR浓度的增高HLEC内ERα、ERβ表达逐渐升高,呈明显的浓度依赖关系.结论 E2、ECR能上调氧化应激状态下的的HLEC内ERα、ERβ表达,并呈明显的浓度依赖关系.%Objective To investigate the effect of ecdysterone ( ECR ) on estrogen receptor ( ER ) expression in oxidative stress-induced human lens epithelial cell ( HLEC ), providing a new perspective to understand the mechanisms of age-related cataract ( ARC ), as well as a potential method for ARC prevention and treatment. Methods HLEC were cultured and sub-cultured in vitro. The cultured HLECs were exposed to H2O2 , with or without pretreatment of E2 or different concentration of ECR. The changes of the expression of ERa、ERβ in HLECs were analyzed by flow cytometer ( FCM ). Results The expression of ERct and ERβ was identified in normalHLECs by FCM; Moreover, the expression of ERa and ERβ in H2O2, group [ ( 21.428 ± 1.491 )% and ( 15.702 ±0. 613 )% ] decreased significantly compared with control group [ ( 33. 552 ±2.147 )% and ( 27. 208 ± 1.633 )% ]( P < 0. 01 ); The expression of ERa and ERβ in E2 group, 10-6, 10-7 and 10-3 mol/L ECR group increased significantly compared with H2O2 group respectively ( P <0.01 ). The ER showed a concentration-dependent expression of ECR. Conclusions The present study indicates that the expression of ERa and ERβ exist in normal HLEC. H2O2 decreases the expression of ERa and ERβ while E2 and ECR increase the expression of ERa and ERβ in HLECs cultivated with H2 O2. ER expression shows a concentration-dependent of ECR.【期刊名称】《中国眼耳鼻喉科杂志》【年(卷),期】2013(013)001【总页数】3页(P14-16)【关键词】人晶状体上皮细胞;雌激素受体;蜕皮甾酮;氧化损伤;白内障【作者】张可丽;祁明信;黄秀榕;郭娜【作者单位】福建中医药大学附属第二人民医院眼科,福州,350003【正文语种】中文近年来国内外陆续有研究结果从不同角度证实,雌激素可对抗晶状体氧化损伤、抑制晶状体上皮细胞凋亡,从而对年龄相关性白内障有一定的防护作用[1-3],且这种防护机制可能呈雌激素受体(estrogen receptor,ER)β依赖性[4]。
植物雌激素对阿尔茨海默病的作用研究进展
・348・CHINESEJOURNALOFINTEGRATIVEMEDICINEONCARDIO-/CEREBROVASCULARDISEASEMarch2010V01.8No.3植物雌激素对阿尔茨海默病的作用研究进展闰燕。
李妍怡中图分类号:R749.1R256.46文献标识码:A文章编号:1672—1349(2010)03—0348~02阿尔茨海默病(Alzheimer’Sdisease,AD)是老年人群中最常见的一种痴呆症,为一种原因不明的神经系统退行性病变。
AD的组织病理学表现主要为老年斑(senileplaques,SP)、神经原纤维缠结(neurofibrillarytangles,NFTs),以及由凋亡引起的区域性神经细胞死亡等。
目前,有关AD的病因和发病机制尚不完全明了,大量的人群回顾性及前瞻性研究和体内外实验表明,植物雌激素替代疗法不仅对AD.的治疗有效,更重要的是能预防AD发病及推迟发病年龄。
植物雌激索(phytoestrogen,PE)是一类具有雌激素或抗雌激素特性的植物来源的化合物。
大多数具有与雌二醇类似的结构,能够与哺乳动物或人的雌激素受体(ERs)结合,从而产生雌激素样或抗雌激素活性。
l植物雌激素与AD的关系1.1AD在老年妇女中明显增加老年妇女的生理特点之一就是绝经和雌激素水平下降。
50岁~64岁的女性其AD发病率是同龄男性的1.7倍。
绝经后妇女中低雌激素水平者也常为低体重者,而低体重者绝经后妇女更容易患AD。
1.2应用性激素替代治疗(HRT)AD妇女AD发病率明显降低,无论口服、注射或其他途径,用药者较未用药者其AD的发病率明显降低。
且与用药的年限和持续时间有关。
绝经后妇女中激素补充治疗的应用可以降低AD的发病率并延迟AD的发生。
服用雌激素10年的妇女,AD发病危险性降低40%。
1.3雌激素水平与老年认知能力变化AD的主要临床表现是记忆力减退,而在某些绝经后妇女的认知能力测试中证实,其一记忆力变化与血清中雌激素水平同时发生,AD妇女血浆中雌激素水平较同龄健康妇女低;且卵巢切除术常伴随一定程度的认知功能损害对己患有AD的妇女,使用雌激素可以改善发病早期的抑郁症状。
地塞米松刺激猪内皮细胞对猪单核源树突状细胞内源性抗原递呈分子
http://bnxb. cbpt. cnki. net doi: 10. 13473/j. cnki. issn. 1002-3186. 2019. 0315
地塞米松刺激猪内皮细胞对猪单核源树突状细胞 内源性抗原递呈分子表达水平的影响
王 莹1,吴 险1,李志军2,张永红1,李焕荣1,李秋明“ (1.北京农学院动物科学技术学院,北京102206; 2.北京市动物疫病预防控制中心,北京102600)
摘 要:【目的】为探究在地塞米松(DSMS)刺激下,猪血管内皮细胞(VEC)对单核源树突状细胞(MoDC) 内源性抗原递呈分子的影响。【方法】DSMS刺激VEC的不同时间段内,分别检测IL-8的表达量,以筛选可以 下调VEC中IL-8表达量的DSMS质量浓度。用此质量浓度的DSMS与内皮细胸、MoDC细胞共同培养,共培 养方式分为诱导后共培养和诱导共培养。收集不同组的MoDC,使用多功能酶标仪检测下室细胞的平均荧光强 度,判断MoDC的迁移能力;通过荧光定量PCR检测MoDC内源性抗原递呈分子,以分析DSMS对MoDC抗 原递呈能力的影响。【结果】DSMS处理VEC后,两种共培养方式中MoDC的迁移能力没有发生显著变化;荧 光定量PCR检测LMP7 mRNA和MHC-I mRNA的表达量均显著增加。【结论】DSMS可下调IL-8的分泌,在 其刺激下,PIEC与MoDC共同培养上调MoDC LMP7 mRNA和MHC-I mRNA的表达水平,进而可能影响 MoDC内源性抗原递呈能力。 关键词:猪内皮细胞;地塞米松;单核源树突状细胞;内源性抗原递呈分子 中图分类号:S852. 4 文章编号:1002-3186 (2019) 03-0071-04 文献标志码:A
高浓度姜黄素对大鼠心室肌细胞瞬时外向钾电流和内向整流钾电流的影响
高浓度姜黄素对大鼠心室肌细胞瞬时外向钾电流和内向整流钾电流的影响施通;吴辉;刘付丽;杜永均;高元兴;岳军;徐旭仲【摘要】目的研究高浓度姜黄素对大鼠心室肌细胞瞬时外向钾电流(Ito)和内向整流钾电流(Ikl)的影响.方法采用急性酶解分离法获得大鼠心室肌细胞,以全细胞膜片钳技术记录It0和Ikl,观察50μmol/L姜黄素对It0和Ikl的影响.结果50μm/L姜黄素对Ito和Ikl通道电流的抑制率分别是(84±l1)%(P<0.05)和(59±8)%(P<0.01).它使Ito和Ikl通道电流密度-电压曲线电流幅度减小,但不改变其整流特性.结论50μmol/L姜黄素能明显抑制大鼠心室肌细胞Ito和Ikl电流,提示其可能存在心脏毒性作用.%Objective To determine the effects of curcumin on transient outward potassium current (I10) and inward rectifier potassium current (Ik1 ) in ventricular myocytes of rats. Methods Single ventricular myocytes of rats were obtained by enzymatic dissociation method. Whole — cell patch clamp technique was used to record transient outward potassium current (Ilo) and inward rectifier potassium current (Ikl ) The effects of curcumin (50(μmol/L) on them were observed. Results The inhibition rates of curcumin (50p,mol/L) on Ito and Ik1 were (84±11)%(P<0.05) and (59 ± 8) % ( P < 0. 01) respectively. The current density - voltage curve of Ito and Ikl was shifted, but their rectifier characteristics were not changed. Conclusion Curcumin (50(μmol/L) could strongly inhibit the currents of Ito and Ikl , so it may bring cardiotoxicity.【期刊名称】《医学研究杂志》【年(卷),期】2012(041)012【总页数】4页(P99-102)【关键词】姜黄素;瞬时外向钾电流;内向整流钾电流;心室肌细胞;心脏毒性;大鼠【作者】施通;吴辉;刘付丽;杜永均;高元兴;岳军;徐旭仲【作者单位】325000 温州医学院附属第一医院麻醉科;325000 温州医学院附属第一医院麻醉科;325000 温州医学院附属第一医院麻醉科;325035 温州医学院健康与环境生态研究所;325000 温州医学院附属第一医院麻醉科;325000 温州医学院附属第一医院麻醉科;325000 温州医学院附属第一医院麻醉科【正文语种】中文姜黄素(curcumin)是姜科姜黄属植物姜黄(Curcuma longa L)的活性成分,它在1815年首次被Vogel和Pelletier从根茎中提取的一种酚类天然色素,但直到1870年才被Daube获得纯晶体姜黄素,大约30 年后 Ivanov 和 Gajevsky 才阐明其结构[1,2]。
晚期胃癌患者一线使用信迪利单抗联合SOX方案的疗效及疗效预测因子分析
晚期胃癌患者一线使用信迪利单抗联合SOX方案的疗效及疗效预测因子分析阴明妹① 冯江山① 赵正① 赵伟锋① 王朝杰① 【摘要】 目的:本研究旨在分析信迪利单抗联合SOX方案(替吉奥+奥沙利铂)一线治疗HER2阴性晚期胃癌的临床效果和安全性,并探讨影响患者生存期的疗效预测因子。
方法:回顾性分析2019年5月—2022年5月在河南省人民医院一线治疗接受信迪利单抗联合SOX方案的43例HER2阴性晚期胃癌患者的临床资料。
主要终点为客观有效率(ORR),次要终点包括疾病控制率(DCR)、无进展生存期(PFS)、总生存期(OS)、不良反应,并用Kaplan-Meier生存分析法及COX回归分析法对胃癌患者的疗效及多种疗效预测因子进行分析,用Log-rank检验进行显著性分析。
结果:43例HER2阴性晚期胃癌患者一线治疗接受了信迪利单抗联合SOX方案治疗,21例获得部分缓解(PR),15例病情稳定(SD),7例病情进展(PD)。
ORR和DCR分别为48.84%(21/43)和83.72%(36/43)。
中位PFS为8.6个月[95%CI(7.916,9.284)],中位OS为16.9个月[95%CI(14.078,19.722)]。
在信迪利单抗联合SOX方案一线治疗HER2阴性晚期胃癌患者的效果中分化程度、血小板与淋巴细胞比值(PLR)、治疗前美国东部肿瘤协作组活动状态(ECOG PS)评分组间的无进展生存期差异均有统计学意义(P<0.05),预后营养指数(PNI)、PLR、细胞程序性死亡-配体1(联合阳性分数)[PD-L1(CPS)]表达、ECOG PS评分组间的总生存期差异均有统计学意义(P<0.05)。
在单因素及多因素分析中,PD-L1(CPS)、ECOG PS为影响晚期胃癌患者OS的独立因素(P<0.05),PLR、ECOG PS为影响晚期胃癌患者PFS的独立因素(P<0.05)。
松果菊苷对人脑胶质瘤细胞迁移和侵袭的影响及机制
果菊苷组细胞TGFβ 蛋白表达量较对照组降低;TGFβ 过表达组较对照组升高;TGFβ 过表达+ 松果菊苷组较
TGFβ 过表达组降低,较松果菊苷组升高(P 均<0. 05)。结论 松果菊苷可以通过阻断TGFβ 表达来抑制人脑胶
质瘤细胞的迁移和侵袭能力。
关键词:松果菊苷;胶质母细胞瘤;转化生长因子β;细胞迁移;细胞侵袭
, , , LI Zhenyu WANG Zhaotao WANG Ji XU Ruxiang ( , , ) Army General Hospital of PLA Affiliated to Southern Medical University Beijing 100010 China
: , Abstract Objective To observe the effects of echinacoside on the migration and invasion of human glioma cells , and to explore its mechanism. Methods Human glioma cells were cultured in vitro and were divided into the control , , , group echinacoside group TGFβ overexpression group and TGFβ overexpression + echinacoside group. Cells in the
continued to culture for 24 h. The cell scratch test was used to observe the cell migration ability of each group. Transwell
异甘草素增加人脑胶质瘤干细胞放射敏感性的实验研究
异甘草素增加人脑胶质瘤干细胞放射敏感性的实验研究林瑜亮;党莹;孙红军;荔志云【摘要】目的:研究异甘草素对胶质瘤干细胞(glioma stem cells,GSCs)放射敏感性的影响及作用机制.方法:无血清培养法提取SHG44人脑GSCs.检测异甘草素和X射线联合运用下GSCs活性和干细胞球形成情况.检测Notch1信号通路、NF-κB和cas?pase-3的表达情况.结果:采用10μM异甘草素在8 Gy较高剂量X射线存在的情况下,能够抑制GSCs球的数目和直径(P<0.05).20μM异甘草素杀伤GSCs的作用明显,且在4、8 Gy的X射线下联合杀伤GSCs的能力依次增强(P<0.05).异甘草素干作用48 h后Notch1的表达下调(P<0.05).4 Gy的X射线照射后,分别于6、24 h,异甘草素干预组P-NF-κB表达逐渐增高(P<0.05),而cleaved caspase-3的表达在X射线照射后的24 h开始升高(P<0.05).结论:异甘草素能够增加GSCs的放射敏感性,抑制Noch1信号通路,上调NF-κB和caspase-3的表达,参与X射线对GSCs的损伤过程.%Objective:To investigate the influence of isoliquiritigenin on the radiosensitivity of glioma stem cells and demonstrate the potential underlying mechanism. Methods:Glioma stem cells were isolated from SHG44 human glioma cells by serum-free medium. Cell proliferation abilities were detected after isoliquiritigenin treatment and radiotherapy by using Cell Counting Kit-8. The formation of glioma stem cell spheres was observed using an inverted microscope. The protein expression levels of Notch1 signal pathway, NF-κB, and caspase-3 were examined by Western blot analysis. Results:Isoliquiritigenin (10μM) inhibited the formation of tumorspheres at 8 Gy radiation (P<0.05). Isoliquiritigenin (20μM) exerted evident growth in hibitory effect on gliomastem cells. Isoliquiritigenin pre-treatment combined with 4 or 8 Gy radiation reduced the cell radioresistance significantly (P<0.05). The protein expression levels of Notch1 in the isoliquiritigenin and DAPT groups were lower than those of the control at 48 h after isoliquiritigenin treatment (P<0.05). The protein expression levels of P-NF-κB began to increase at 6 and 24 h after 4 Gy radiation with isoliquiritigenin pretreatment (P<0.05). Isoliquiritigenin pretreatment combined with 4 Gy radiation increased the protein expression level of cleaved caspase-3 at 24 h after radiation compared with that of the isoliquiritigenin treatment alone (P<0.05). Conclusion:Isoliquiritigenin may downregulate Notch1 signal pathway and affect different aspects of cell stress and death, including NF-κB- and caspase-3-associated processes, thereby promoting the radiosensitivity of glioma stem cells.【期刊名称】《中国肿瘤临床》【年(卷),期】2017(044)022【总页数】5页(P1120-1124)【关键词】异甘草素;胶质瘤干细胞;放射敏感性;Notch1;NF-κB;caspase-3【作者】林瑜亮;党莹;孙红军;荔志云【作者单位】兰州军区兰州总医院神经外科(兰州市730050);兰州军区兰州总医院神经外科(兰州市730050);兰州军区兰州总医院神经外科(兰州市730050);兰州军区兰州总医院神经外科(兰州市730050)【正文语种】中文胶质瘤是最常见的神经上皮性颅内肿瘤,约占中枢神经系统恶性肿瘤的80%[1]。
大蒜素对大鼠心房肌细胞瞬时外向钾电流的影响
大蒜素对大鼠心房肌细胞瞬时外向钾电流的影响陈晨;王瑞;蔡忠琦;杨易;林琨;刘昱圻;杨洁;李泱【摘要】目的观察大蒜素对大鼠单个心房肌细胞钾电流的作用.方法灌流酶法分离大鼠单个心房肌细胞,细胞外局部灌流法给药,采用全细胞膜片钳技术记录大鼠单个心房肌细胞瞬时外向钾电流(Ito).结果在+50 mV电压下,30μmol·L-1大蒜素可使大鼠心房肌细胞Ito峰值由(20.5±2.2)pA/pF降低至(11.3±2.1)pA/pF(P<0.01,n=12),电流-电压曲线下移,该过程呈浓度依赖性和电压依赖性特点,半数抑制浓度(IC50)为(19.0±2.5)μmol·L-1.门控动力学研究显示,大蒜素可使Ito通道稳态激活曲线右移,恢复时间延长导致激活过程减慢,且失活后再激活延迟.结论大蒜素可通过抑制通道的激活及失活后的恢复而降低心房肌细胞Ito.%Objective To study the effect of allicin ( All) on potassium current in single atrial myocytes in rats. Methods Isolated rat atrial myocytes were isolated by perfusion and administered by extracellular perfusion method.Whole cell patch clamp technique was used to record transient outward potassium current ( Ito ) in atrial myocyte. Results In presence of 30 μmol·L-1 of All,the peak current of Ito was significantly reduced from (20.5±2.2) pA/pF to (11.3±2.1) pA/pF at+50 mV of test potential(P<0.01,n=12).This effect of All showed voltage- and concentration-dependence with IC50 of (19.0±2.5)μmol·L-1 .The steady-state activation curve of Ito was shifted to more positive potential and recovery time from inactivation was prolonged.In addition, they fail to find any effect of All on the steady-state inactivation and closed-state inactivation of Ito.Conclusion All can inhibit Ito by slowing down the process of activation and recovery from inactivation of channel.【期刊名称】《医药导报》【年(卷),期】2017(036)011【总页数】5页(P1231-1235)【关键词】大蒜素;心房肌细胞;瞬时外向钾电流;膜片钳【作者】陈晨;王瑞;蔡忠琦;杨易;林琨;刘昱圻;杨洁;李泱【作者单位】首都医科大学附属北京安贞医院心内科,北京 100029;西安空军医院急诊科,西安 710054;解放军总医院心内科,北京 100853;解放军总医院心内科,北京100853;解放军总医院心内科,北京 100853;解放军总医院心内科,北京 100853;解放军总医院心内科,北京 100853;解放军总医院心内科,北京 100853【正文语种】中文【中图分类】R286;R965心房颤动(房颤)是临床最常见的心律失常之一,近10年间其全球患病率、发病率及死亡率逐年增加,影响着公众健康[1]。
艾塞那肽对波动血糖损伤的HRMCs的保护作用及机制
艾塞那肽对波动血糖损伤的HRMCs的保护作用及机制张建双;郭婷婷;谢云【摘要】Objective To observe the effect of exenatide on endoplasmic reticulum stress (ERS) in human renal mesangial cells (HRMCs) injured by fluctuating hyperglycemia culture,and to explore the mechanism.Methods HRMCs were randomly divided into three groups:control group (group N,cells were cultured in 5.6 mmol/L glucose for 24 h),fluctuating hyperglycemia group (group F,cells were cultured in 30 mmol/L glucose for 3 h,5.6 mmol/L glucose for 2 h,repeated three times in one day,then 5.6 mmoll/L glucose overnight),fluctuating hyperglycemia and exenatide group (group F+G,HRMCs were cultured in fluctuating hyperglycemia and 100 nmol/L exenatide).MTT assay was used to measure the viability in each group.The apoptosis rates were detected by flow cytometry in three groups.The relative expression of glucose regulated protein78 (GRP78) and CCAAT/enhancerbinding protein homologous protein (CHOP) were tested by Western blot assay.Results Compared with the group N,the cell proliferation level decreased,the cell apoptosis rate increased,and the expression levels of GRP78 and CHOP increased in F group (P < 0.05).After treatment with exenatide,the cell proliferation rate increased,cell apoptosis rate decreased (P < 0.05),and the expression levels of GRP78 and CHOP decreased in F+G group,compared with those of the group F (P <0.05).Conclusion Exenatide can reduce the damage of fluctuating hyperglycemia on HRMCs by down-regulating the stress levels of theendoplasmic reticulum stress.%目的观察胰高血糖素样肽1(GLP-1)受体激动剂类药物艾塞那肽对波动血糖培养下受损伤的人肾小球系膜细胞(HRMCs)内质网应激(ERS)的影响,并探讨其机制.方法将体外培养的HRMCs分为3组:对照组(N 组,5.6 mmol/L葡萄糖培养24 h)、波动血糖组(F组,30 mmol/L葡萄糖培养3h 后5.6 mmol/L葡萄糖培养2h,重复3次,5.6 mmol/L葡萄糖培养过夜)、波动血糖+艾塞那肽组(F+G组,在F组基础上加用100 nmol/L艾塞那肽).MTr法测定各组细胞增殖能力;流式细胞术检测细胞凋亡率;Western blot法测定葡萄糖调节蛋白78(GRP78)和CCAAT/增强子结合蛋白同源蛋白(CHOP)的表达水平.结果与N组相比,F组细胞增殖能力降低,细胞凋亡率升高,内质网应激相关标志分子GRP78和CHOP表达水平均升高(P<0.05);加用艾塞那肽干预后,与F组比较,F+G组细胞增殖水平升高,细胞凋亡率降低,同时,GRP78和CHOP表达水平均下降(P<0.05).结论艾塞那肽可能通过下调内质网应激水平来减轻波动血糖对HRMCs的损伤.【期刊名称】《天津医药》【年(卷),期】2017(045)007【总页数】4页(P682-685)【关键词】肾小球系膜细胞;细胞增殖;细胞凋亡;内质网应激;波动血糖;艾塞那肽【作者】张建双;郭婷婷;谢云【作者单位】天津医科大学代谢病医院内分泌研究所,卫生部激素与发育重点实验室,天津市代谢性疾病重点实验室 300070;天津医科大学代谢病医院内分泌研究所,卫生部激素与发育重点实验室,天津市代谢性疾病重点实验室 300070;天津医科大学代谢病医院内分泌研究所,卫生部激素与发育重点实验室,天津市代谢性疾病重点实验室 300070【正文语种】中文【中图分类】R587.1人肾小球系膜细胞(humɑn renɑl mesɑngiɑl cells,HRMCs)是肾小球内的固有细胞,是糖尿病肾病(diɑbetic nephropɑthy,DN)损伤的主要靶细胞和效应细胞[1]。
蛹虫草提取物联合地塞米松抑制大鼠角膜新生血管
蛹虫草提取物联合地塞米松抑制大鼠角膜新生血管【摘要】目的:观察蛹虫草提取物(cordyceps militaris extract,CME)联合地塞米松(dexamethasone,Dex)对大鼠角膜新生血管的抑制作用。
方法:对48只大鼠采用碱烧伤法制作大鼠角膜新生血管模型,后随机分为3组:A组为模型对照组,B组为CME治疗组,C 组为CME联合Dex治疗组。
造模后每组均隔日注射给药,A组给予生理盐水结膜下注射,B组给予CME 10mg球结膜下注射,C组给予CME 10mg球结膜下注射,另外给予0.25g/L Dex滴眼液点眼,3次/d。
于术后4,8,14d测量角膜新生血管的生长面积,并测量角膜组织中VEGF 及其mRNA的表达情况。
结果:造模后联合用药组的大鼠角膜新生血管生长面积较模型对照组及CME治疗组明显减少,差异均具有统计学意义(P<0.05)。
结论:CME联合Dex更能明显抑制碱烧伤所致大鼠角膜新生血管的生长。
【关键词】蛹虫草提取物;地塞米松;角膜新生血管;血管内皮生长因子Abstract AIM: To observe the inhibition effect on rat corneal neovascularizition(CNV) by drug combination of the cordyceps militaris extract(CME) and dexamethasone(Dex). METHODS: CNV model was induced by alkaline burn of the cornea with 1mol/L NaOH. Forty eight rats were divided into three groups randomly after modeling, A was model group, B was CMEtreatment group, and C was combination treatment group. All groups received medication by subconjunctival injection every other day after alkaline burn, group A received saline, groupB received 10mg CME, groupC also received 10mg CME, and received0.25g/L Dex eyedrops three times each day, each injection volume was set at 0.1mL. On the 4, 8, 14 days, CNV was observed, and the expression of vascular endothelial growth factor(VEGF) and it s mRNA in the cornea were detected.RESULTS: After modeling, rat CNV of the combination group was significantly reduced than the model control group and CME treatment group, the differences were statistically significant (P<0.05).CONCLUSION:CME combining with Dex can inhibit alkaline burn induced CNV growth more effectively.KEYWORDS: cordyceps militaris extract; dexamethasone; corneal neovascularizition; vascular endothelial growth factor0 引言角膜新生血管(corneal neovascularization,CNV) 是常见的致盲性眼病之一,也是角膜移植术后发生排斥反应的高危因素。
淫羊藿苷通过增强 Fas-FasL 表达活性诱导裸鼠食管癌细胞凋亡
淫羊藿苷通过增强 Fas-FasL 表达活性诱导裸鼠食管癌细胞凋亡纪昕;王崇;李洁;岳晓乐;张艳华;李永军【期刊名称】《重庆医学》【年(卷),期】2016(45)12【摘要】Objective To investigate the inhibitory effect of icariin(ICA) on the xenograft tumors growth of esophageal car‐cinoma and to preliminarily investigate its mechanism .Methods The MTT assay and Giemsa staining were applied to detect and observe the in vitro inhibitory effect of ICA on esophagus cancer cell lines Eca‐109 and TE‐13 .The xenograft tumor model of nude mouse esophagus cancer cell was constructed and divided into 3 groups ,6 cases in each group .Each mouse in the experimental group was intraperitoneally injected by ICA 50 mg/kg ;while the control group was injected by the same volume of normal saline and the positive control group was injected by cis‐platinum 2 mg/kg ,once every 2 days ,a total of 14 days .The tumor volume was measured once per 3 d .After experiment ,the tumor weight was measured;the TUNEL staining was used to observe the morphological chan‐ges and cell apoptosis of tumor tissue in each group .The changes of Fas and FasL protein expression in tumor tissues were analyzed by immunohistochemistry .The FasL and IFN‐γlevels in peripheral blood were tested by the ELISA assay .Results ICA exerted no obvious inhibitory effect on the proliferat ion of Eca‐109 and TE‐13 cell invitro .The average volume and weight of xenografts tumor had statistical difference between the experimental group and the positive control group (P<0 .05) .The TUNEL staining results showed that the tumor tissues had obvious apoptosis ,the number of apoptosis cells was significantly increased compared with the control group(P<0 .05) .The immunohistochemistry experimental results showed that the expression of Fas and FasL was signifi‐cantly increased(P<0 .05) .The ELISA expe rimental results demonstrated that the FasL and IFN‐γlevels of peripheral blood in the experimental group were significantly increased(P<0 .05) .Conclusion ICA had no obvious inhibitory effect on esophageal cancer cell proliferation in vitro ,but could induce in vivo apoptosis through the Fas expression and secretion of FasL and IFN‐γ,thus plays the role of anti‐esophageal cancer .%目的:探讨淫羊藿苷(icariin ,ICA )对裸鼠体内食管癌移植瘤生长的抑制作用,并初步探讨其机制。