简介:摘要:WNT1诱导信号通路蛋白1 (Wnt1 inducible signaling pathway protein 1,WISP1) 是一种富含半胱氨酸的蛋白质,属于CCN 蛋白家族。越来越多的研究表明WISP1在各种人类恶性肿瘤中发挥不同的生物学功能。新的研究证据显示WISP1蛋白与胃癌细胞增殖、凋亡、侵袭和转移密切相关。在这篇综述中,我们描述了WISP1蛋白在胃癌中的生理功能以及其如何参与胃癌发生进展过程。此外,我们讨论了WISP1有望成为胃癌的诊断标志物和/或治疗新靶点。
简介:摘要目的:探究实时荧光定量PCR技术快速检测的效果。方法:选取疑似甲型 H1N1流感病毒携带者咽拭子标本作为检测标本,共100份,均采取病毒核酸确诊方式,分析诊断结果。结果:在100例患者中,阳性41例、阳性率为41.00%;在不同分型中,检出甲1型流感病毒29例、所占比为70.73%,检出甲3型流感病毒12例、所占比为29.27%,未检出乙型流感病毒,不同分型的所占比相比,具有显著差异,P<0.05。结论:对甲型H1N1流感病毒实施实时荧光定量PCR技术快速检测,取得显著的诊断价值,能早期明确疾病,利于后期治疗。
简介:摘要患儿 男,3岁9月龄,以“排稀便10个月、间断抽搐4个月”就诊,经乳糜泻抗体、人类白细胞抗原(HLA)-DQ基因检测、十二指肠病理活检明确诊断为乳糜泻,予去麦麸类饮食以及对症营养治疗后好转。随访过程中出现多饮多尿,查血糖明显升高,尿糖、尿酮体阳性,诊断为乳糜泻合并1型糖尿病,给予对症补充胰岛素治疗。随访6年患儿血糖控制平稳,生长发育正常。
简介:摘要目的了解新型狂犬疫苗“2-1-1”接种程序的临床应用效果,为新的接种方法积极推进进行前瞻性研究。方法对本社区2011年10月-2013年12月148例被被狗、猫、鼠等动物咬、抓伤人群进行按照就诊的先后顺序平均分为2组,观察组74例,实施“2-1-1”接种程序;对照组74例实施传统的“五针次法”接种程序。在接种程序中10d和接种程序结束后15d分别对患者进行血清抗狂犬病毒抗体水平进行统计比较,并进一步观察其影响因素。结果观察组与对照患者10d血清抗狂犬病毒抗体阳性率分别为56.76%、12.16%;接种程序完成后15d血清抗狂犬病毒抗体阳性率分别为97.30%、85.14%。抗体转阳率与年龄增长呈负相关。结论“2-1-1”狂犬疫苗接种程序完全符合药物动力学原理,它能迅速提高机体内血药浓度,并在短期内产生抗体,同时也减少患者就诊次数,更加方便患者。但疫苗的接种效果与患者各机体个体差异存在一定的联系,全程接种15d后应加强抗体水平的检测,如抗体阴性患者应积极寻找原因及加强接种。
简介:LFA-1andMac-1,twoβ2integrinmembersconstitutivelyexpressedonneutrophils,mediateleukocyterecruitmentcascadebybindingtothesameligandofICAM-1.TheslowrollingandfirmadhesionofleukocytesrelyonLFA-1whilethecellcrawlingisdependentonMac-1.Wehypothesizedthattheirdistinctroleswerelikelyattributedtothedifferencesinthebindingkineticsorinthediverseresponsesofoutside-inandinside-outsignaling.Inthisstudy,wecomparedtheICAM-1bindingfeaturesbetweensolubleormembrane-expressedLFA-1andMac-1withdifferentaffinityconformationsusingopticaltraptechnique.Ourdataindicatethattheaffinityup-regulationfromwidetype(WT)tohighaffinity(HA)isoff-ratedependentforLFA-1buton-ratedependentforMac-1.Thestructuralbasesofthisnewfindingwerefoundtobeconsistentwithourprevioussimulations.Theseresultsfurtheredourunderstandingontheirfunctiondifferencesundershearflow.
简介:AbstractBackground:Emerging evidence indicates that the sineoculis homeobox homolog 1-eyes absent homolog 1 (SIX1-EYA1) transcriptional complex significantly contributes to the pathogenesis of multiple cancers by mediating the expression of genes involved in different biological processes, such as cell-cycle progression and metastasis. However, the roles of the SIX1-EYA1 transcriptional complex and its targets in colorectal cancer (CRC) are still being investigated. This study aimed to investigate the roles of SIX1-EYA1 in the pathogenesis of CRC, to screen inhibitors disrupting the SIX1-EYA1 interaction and to evaluate the efficiency of small molecules in the inhibition of CRC cell growth.Methods:Real-time quantitative polymerase chain reaction and western blotting were performed to examine gene and protein levels in CRC cells and clinical tissues (collected from CRC patients who underwent surgery in the Department of Integrated Traditional and Western Medicine, West China Hospital of Sichuan University, between 2016 and 2018, n = 24). In vivo immunoprecipitation and in vitro pulldown assays were carried out to determine SIX1-EYA1 interaction. Cell proliferation, cell survival, and cell invasion were determined using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, clonogenic assay, and Boyden chamber assay, respectively. The Amplified Luminescent Proximity Homogeneous Assay Screen (AlphaScreen) method was used to obtain small molecules that specifically disrupted SIX1-EYA1 interaction. CRC cells harboring different levels of SIX1/EYA1 were injected into nude mice to establish tumor xenografts, and small molecules were also injected into mice to evaluate their efficiency to inhibit tumor growth.Results:Both SIX1 and EYA1 were overexpressed in CRC cancerous tissues (for SIX1, 7.47 ± 3.54 vs.1.88 ± 0.35, t = 4.92, P = 0.008; for EYA1, 7.61 ± 2.03 vs. 2.22 ± 0.45, t = 6.73, P = 0.005). The SIX1/EYA1 complex could mediate the expression of two important genes including cyclin A1 (CCNA1) and transforming growth factor beta 1 (TGFB1) by binding to the myocyte enhancer factor 3 consensus. Knockdown of both SIX1 and EYA1 could decrease cell proliferation, cell invasion, tumor growth, and in vivo tumor growth (all P < 0.01). Two small molecules, NSC0191 and NSC0933, were obtained using AlphaScreen and they could significantly inhibit the SIX1-EYA1 interaction with a half-maximal inhibitory concentration (IC50) of 12.60 ± 1.15 μmol/L and 83.43 ± 7.24 μmol/L, respectively. Administration of these two compounds could significantly repress the expression of CCNA1 and TGFB1 and inhibit the growth of CRC cells in vitro and in vivo.Conclusions:Overexpression of the SIX1/EYA1 complex transactivated the expression of CCNA1 and TGFB1, causing the pathogenesis of CRC. Pharmacological inhibition of the SIX1-EYA1 interaction with NSC0191 and NSC0933 significantly inhibited CRC cell growth by affecting cell-cycle progression and metastasis.
简介:注浆技术是一项高科技含量的施工技术,在建筑工程中应用该种技术了促进单桩的实际承载极限得到有效提高,进而促进桩基沉降量得到有效降低。桩灌注桩后注浆技术已经成为高层建筑工程施工过程中的应用到的一种主要技术之一,并在工程整体功能及作用的发挥上起着重要的具有重要意义。