microRNA-224在弥漫大B细胞淋巴瘤的表达及作用

目的研究miR-224在弥漫大B细胞淋巴瘤(DLBCL)患者中的表达与临床病理特征的关系,观察miR-224对弥漫大B淋巴瘤细胞系OCI-LY10增殖、侵袭能力的影响。方法收集86例DLBCL组织,并以22份无肿瘤细胞侵犯的正常淋巴结组织标本为对照,采用real-time PCR方法检测miR-224的相对表达水平,分析miR-224表达水平与患者临床病理特征的关系。对弥漫大B淋巴瘤细胞系OCI-LYl0进行miR-224反义寡核苷酸(ASO)转染并培养,MTT法检测细胞增殖能力,Transwell小室检测细胞侵袭能力,real-time PCR方法与Western blot方法检测细胞中bcl-2的表达水平。结果DLBCL患者淋巴瘤中miR-224表达水平显著低于正常淋巴结组织(P0.05),miR-224在DLBCL患者中的表达与患者年龄、性别、疾病分期均无相关性(P0.05)。miR-224ASO明显升高OCI-LYl0细胞的增殖侵袭能力,显著升高bcl-2蛋白与m RNA表达水平(P0.05)。结论miR-224抑制OCI-LY10细胞增殖侵袭可能与下调bcl-2蛋白表达相关。     

microRNA-191在弥漫大B细胞淋巴瘤患者中的表达及其作用机制研究

目的分析miR-191在弥漫大B细胞淋巴瘤(DLBCL)患者中的表达与临床病理特征的关系,观察miR-191对弥漫大B淋巴瘤细胞系OCI-LY10增殖、侵袭能力的影响。方法采用荧光实时定量PCR方法检测86例DLBCL患者肿瘤组织和22例正常淋巴结组织中miR-191的表达,分析miR-191表达水平与患者临床病理特征的关系。对弥漫大B淋巴瘤细胞系OCI-LY10进行miR-191反义核苷酸(ASO)转染并培养,MTT法检测细胞增殖能力,Transwell小室检测细胞侵袭能力,实时PCR方法与Western blot方法检测细转染miR-191ASO后各组细胞PLCD1的m RNA和蛋白的表达。结果 DLBCL患者淋巴结组织中miR-191表达水平显著高于对照组,两者比较差异有统计学意义(P<0.05)。miR-191在DLBCL患者中的表达与患者年龄、性别无关(P>0.05),但是与疾病分期显著相关(P<0.05)。与对照组相比,miR-191 ASO组OCI-LYl0细胞的增殖侵袭能力明显降低,PLCD1蛋白与mRNA表达水平显著升高(P<0.05)。结论 miR-191在DLBCL中表达上调,其促进OCI-LY10细胞增殖侵袭的作用机制可能与下调PLCD1蛋白表达有关。     

TNFAIP3 siRNA对弥漫大B细胞淋巴瘤OCI-LY1细胞NF-κB活性及增殖的影响

目的探讨A20(TNFAIP3)基因对弥漫性大B细胞淋巴瘤(diffuse large B-cell lymphoma,DLBCL)细胞生长的影响及其与细胞内核因子-κB(nuclear factor-kappa B,NF-κB)活化的关系。方法采用RNA干扰技术沉默A20,设计3条针对人A20mRNA的siRNA序列,经过lipofectamine RNAiMAX转染至OCI-LY1细胞(DLBCL细胞),用RT-PCR技术检测转染后OCI-LY1细胞内A20 mRNA的表达,用Western blot法检测A20和NF-κB(p65)蛋白的表达。用MTT法检测A20基因沉默后OCI-LY1细胞体外生长活力变化。结果 (1)siRNA转染组A20 mRNA及编码蛋白表达较未转染组及阴性对照组明显降低(P0.05);(2)转染组p65蛋白的表达较未转染组和阴性对照组明显增高(P0.05);(3)转染组细胞较未转染组、阴性对照组的OCI-LY1细胞体外生长活力明显增强。三组siRNA序列中siRNA-2序列干扰效果最明显。结论 DLBCL细胞中A20基因沉默会导致NF-κB活性增强,从而增强淋巴瘤细胞的生长活力。     

miR-92a和miR-29c对直肠癌细胞增殖和侵袭的影响

目的探讨miR-92a与miR-29c在直肠癌细胞中的表达对直肠癌细胞增殖和侵袭能力的影响。方法应用miR-92a inhibitor,miR-29c mimic在体外转染直肠癌细胞系HT-29,分别构建miR-92a的干扰表达和miR-29c的过表达,设置转染无义序列组作为对照组。采用反转录合成cDNA和荧光定量PCR,以U6表达作为内对照,检测细胞中miR-92a,miR-29c的表达;采用CCK-8法,通过检测转染直肠癌细胞后不同时期细胞增殖能力;采用Transwell小室侵袭实验检测细胞侵袭能力,分析miR-92a,miR-29c的相对表达量与直肠癌细胞增殖和侵袭的关系。结果与对照组相比,转染miR-92 inhibitor后,直肠癌细胞系HT-29的miR-92a表达水平均明显降低,增殖能力和侵袭能力均受到明显抑制;而转染miR-29c mimic后,直肠癌细胞系HT-29中miR-29c表达水平均明显提高,但HT-29细胞系的增殖能力和侵袭能力却均受到明显抑制。结论 miR-92a促进癌细胞增殖和侵袭,miR-29c抑制直肠癌细胞的增殖和侵袭。     

KLF4在弥漫性大B细胞淋巴瘤组织中的表达及其作用机制研究

目的:探讨KLF4在弥漫性大B细胞淋巴瘤组织中的表达及其对弥漫性大B细胞淋巴瘤细胞增殖、侵袭、迁移能力的影响及作用机制。方法:选择弥漫性大B细胞淋巴瘤石蜡组织标本60例和淋巴结反应增生患者的淋巴结石蜡组织标本60例,免疫组化法测定组织中KLF4表达。Western blot和RT-PCR测定弥漫性大B细胞淋巴瘤细胞系ly1细胞和人B淋巴母细胞系HMy2.CIR细胞中KLF4蛋白、mRNA水平。ly1细胞分为空白对照组(不转染病毒)、阴性对照组(转染阴性对照病毒)和过表达KLF4组(转染过表达KLF4病毒),Western blot和RT-PCR测定ly1细胞中KLF4蛋白、mRNA水平,CCK-8测定转染后ly1细胞增殖情况,Transwell小室法测定转染后ly1细胞侵袭和迁移能力,Western blot法测定转染后三组ly1细胞Akt、p-Akt、PI3K、p-PI3K蛋白水平。结果:弥漫性大B细胞淋巴瘤组织B细胞中KLF4阳性表达率(30.0%)低于对照组织B细胞(100.0%)(P<0.05)。ly1细胞中KLF4蛋白和mRNA水平低于HMy2.CIR细胞(P<0...     

miR-129抑制鼻咽癌细胞系CNE2增殖

目的检测miR-129对鼻咽癌细胞系CNE2细胞生物学功能的影响。方法人工合成miR-129模拟物(mimics)和抑制物(inhibitor),转染至鼻咽癌CNE2细胞中,RT-qPCR检测细胞miR-129表达;CCK8法检测细胞增殖;Transwell小室侵袭实验检测细胞侵袭能力;流式细胞仪检测细胞凋亡能力。结果与对照组相比,转染miR-129 mimics组的miR-129表达水平明显升高(P0.05);转染miR-129 inhibitor组的miR-129表达水平均明显降低(P0.05);与对照组相比,转染miR-129 mimics组CNE2细胞增殖能力、侵袭能力显著下降(P0.05),凋亡显著增多(P0.05);与对照组相比,转染miR-129 inhibitor组CNE2细胞增殖能力、侵袭能力显著升高(P0.05),凋亡显著下降(P0.05)。结论 miR-129抑制鼻咽癌细胞系CNE2的增殖和迁移能力,促进细胞凋亡。     

miR-26a靶向调节GSK-3β基因对卵巢癌SKOV3细胞增殖和侵袭的影响

目的探讨miR-26a对卵巢癌SKOV3细胞增殖及侵袭能力的影响。方法将卵巢癌SKOV3细胞分为miR-26a抑制剂组、miR-26a模拟物组和对照组,分别将miR-26a抑制剂或miR-26a模拟物转染至miR-26a抑制剂组或miR-26a模拟物组细胞,对照组细胞转染无关序列,Real-time PCR法检测各组细胞miR-26a表达水平,分别用MTT方法与Transwell细胞侵袭实验检测转染后各组SKOV3细胞的增殖与侵袭能力变化。Real-time PCR与Western blot实验分别检测各组细胞GSK-3βm RNA和蛋白表达水平。结果与对照组相比,miR-26a抑制剂组SKOV3细胞miR-26a表达水平显著降低,miR-26a模拟物组则显著升高(P0.01)。与对照组相比,miR-26a抑制剂组SKOV3细胞增殖与侵袭能力显著降低,GSK-3βm RNA及蛋白表达水平显著升高,miR-26a模拟物组SKOV3细胞增殖与侵袭能力显著升高,GSK-3βm RNA及蛋白表达水平显著降低(P0.01)。结论 miR-26a促进卵巢癌SKOV3细胞的增殖和侵袭可能与下调GSK-3β的表达相关。     

LncRNA XIST通过调控miR-140-3p/PD-L1轴促进弥漫大B细胞淋巴瘤细胞的增殖与迁移

目的 探讨LncRNA X失活特异性转录本（XIST）通过miR-140-3p/程序性死亡配体-1(PD-L1)轴对弥漫大B细胞淋巴瘤（DLBCL）细胞增殖、迁移的影响。方法 以2015年至2017年期间我科室收治的40例DLBCL患者的淋巴结活检组织标本,以及人DLBCL细胞系OCI-LY19、SU-DHL-4、U2932为研究对象,qRT-PCR检测XIST表达,分析XIST表达与DLBCL患者临床病理特征的关系;利用LipofectamineTM2000转染试剂对U2932细胞进行转染,分组为：空白组、miR-NC组、miR-140-3p mimics组、OE-NC组、OE-XIST组、OE-PD-L1组、OE-XIST+miR-NC组、OE-XIST+miR-140-3p mimics组、OE-XIST+si-NC组、OEXIST+si-PD-L1组,qRT-PCR检测各组细胞中miR-140-3p及XIST表达水平;MTT法检测各组细胞增殖情况;Transwell实验检测各组细胞迁移情况;双荧光素酶报告基因检测实验分别验证XIST与miR-140-3p、miR-140-3p与...     

miR-376a、KLF15在胃癌中的表达及对胃癌AGS细胞增殖的影响

目的探讨过表达Cdh1蛋白对高糖诱导的视网膜Müller细胞株GFAP表达的影响。方法通过GEPIA公共数据库分析胃癌中KLF15的表达,通过OncomiR公共数据库分析miR-376a在胃癌中的表达。在AGS细胞系中分别转染miR-376a模拟物和miR-376a抑制物,qRT-PCR和Western blot法检测KLF15的表达,采用CCK-8法检测转染后AGS细胞的增殖能力。通过在线预测工具(TargetscanHuman 7.2, miRDB)预测KLF15是否为miR-376a的靶基因。结果在胃癌中,miR-376a表达升高,KLF15表达水平下降(P0.05);在AGS细胞系中,转染miR-376a模拟物后,miR-376a表达升高,KLF15表达下降(P0.05),AGS细胞的增殖显著升高;转染miR-376a抑制物后,miR-376a的表达水平下降,KLF15表达水平显著升高(P0.05),AGS细胞的增殖能力显著降低。生物信息学分析结果显示KLF15是miR-376a的靶基因之一。结论 miR-376a调节胃癌AGS细胞的增殖能力与下调KLF15的表达相关。     

基底样乳腺癌中microRNA-205靶向调控KLF12及对细胞侵袭能力的影响

目的探讨基底样乳腺癌(basal-like breast carcinoma,BLBC)特异性miRNAs和靶基因及生物学功能。方法提取细胞总RNA和蛋白,荧光素酶实验验证靶基因;采用qRT-PCR、Western blot和免疫组化En Vision法分析miRNA和靶基因表达;CCK8和Transwell实验检测细胞增殖和侵袭能力。结果荧光素酶实验示miR-205靶向调控KLF12(P=0.001 6)。qRT-PCR检测结果示MAD-MB-468细胞中miR-205表达下调(P=0.007),KLF12表达升高(P=0.039);转染miR-205 mimics过表达miR-205,miR-205表达显著升高(P=0.000),KLF12表达减少(P=0.038)。Western blot检测结果示miR-205过表达,MDAMB-468细胞KLF12表达显著升高(P=0.007 9)。CCK8实验示miR-205未参与细胞增殖。Transwell实验示过表达miR-205显著抑制细胞侵袭能力(P=0.001)。结论 miR-205是BLBC特异性的miRNA,通过负性靶向调控原癌基因KLF12和抑制侵袭具有抑癌基因的功能。miR-205和KLF12为BLBC的诊断和治疗提供潜在的分子标志物和新思路。     

Level of functioning of siblings and parents of probands of varying degrees of retardation

A further analysis of already published data supports the position that retardates of low ability level less frequently have retarded siblings, retarded parents, and parents low in occupational level than do retardates higher in ability level. The analysis supports the position that there are two types of retarded individuals, persons retarded as a result of gene or chromosomal anomalies, brain injury, etc., who more frequently occur in the lower-level retardate group, and persons whose retardation represents polygenic segregation, who more frequently occur in the higher-level group.     

局部注射辛伐他汀对骨质疏松大鼠股骨髁骨小梁的改建效应

背景：局部注射具有成骨作用的辛伐他汀,可显著增加骨质疏松大鼠股骨颈及股骨髁部的骨密度及力学强度,分析局部注射辛伐他汀对股骨髁骨小梁的影响。 目的：进一步研究骨质疏松大鼠股骨内局部注射辛伐他汀对股骨髁骨小梁的影响。为将辛伐他汀应用于临床骨质疏松局部治疗提供实验基础。 方法：18只雌性SD大鼠双侧卵巢切除后3个月,制备大鼠骨质疏松模型。实验大鼠随机数字表法均分为3组,分别在实验大鼠的右侧股骨髓腔内单次注射辛伐他汀溶液5 mg、10 mg,对照组单纯注射空白载体。分别在注射后1个月处死大鼠并取材。Micro-CT扫描并定量分析骨组织形态变化。 结果与结论：给药后1个月,Micro-CT扫描结果显示,辛伐他汀治疗组的骨微结构参数如骨皮质厚度、骨小梁密度及连接率明显优于对照组。说明疏松骨骼单次注射小剂量辛伐他汀可显著促进股骨髁部骨小梁改建,改善骨骼微结构,可为强化局部、防治骨质疏松骨折的新选择进一步提供实验基础。     

石斛属民族药用植物的分类及生药学研究

中药石斛早在《神农本草经》中就被列为上品,其应用历史悠久,具有养阴生津、补肾益气、润喉护嗓、活血明目、抗癌防老等功效。本文对国内外石斛属民族药用植物的分类及生药学研究进行了综述。     

膝关节骨性关节炎的关节镜治疗体会

目的我科自2001～2005年4月对59例67膝的骨性关节炎（0A），进行关节镜检查及镜下清理术。方法镜检：膝关节骨性关节炎伴不同程度滑膜炎，滑膜皱壁粘连纤维片，关节软骨不同程度破坏。镜下清除增生滑膜，松解粘连，去除剥脱软骨、修复关节面。结果随访2月～4年，平均1.5年，术后综合评估2月～1年，优良率94％；1～2年，优良率79.2％；2年以上优良率54.8％。结论关节镜对膝关节骨性关节炎诊断能提供了比较全面的资料，并对骨性关节炎早期有良好疗效，具有创伤小、恢复快、并发症少和重复治疗等优点。     

Anatomical study of distribution of valves of the cutaneous veins of adult''s limbs

Since the cutaneous veins of the four limbs have been used as autogenous grafts in the treatment of cardiovascular disorders, knowledge of distribution of the valves is increasingly required depending upon the use. In the gross anatomical study of distribution of valves of the trunci venae, there has been argument about locational relationships between the venous roots and the valves in the vicinity of the roots and the inter-valvular distance. However, there have been only few reports discussing detailed information about valves of the cutaneous veins of the four limbs. The authors observed patterns of distribution of the cutaneous venous valves of the four limbs of cadavers prepared for practice in anatomy. The following parts were excised from each cadaver: the cephalic, basilic, and the great saphenous veins, which originate from the acral venous network and flow into the proximal deep veins, and the venous roots communicating with these veins. An incision was made on each excised vein in the direction of the long axis under observation with a stereoscopic microscope, and the inter-valvular distance and the distance between the valve and the orifice of venous root in the vicinity of the valve were measured. The inter-valvular distance varied with type of the truncus venae, and it varied according to area even in the same truncus venae.     

Pathways of the realization of immunomodulating effects of neurotransmitters

Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 115, N ^o 4, pp. 401–404, April, 1993     

Characterization of sterols of three digenetic trematodes of buffalo

Sterols of three digenetic trematodes were isolated and characterized by infrared and 1H nuclear magnetic resonance spectroscopies, and gas-liquid chromatography and gas chromatography-mass spectrometry. Sterols identified were cholesterol, cholestanol, 24-methylcholesterol, 24-methylcholestanol, 24-ethyl-22-dehydrocholesterol, 24-ethyl-22-dehydrocholestanol, 24-ethylcholesterol and 24-ethylcholestanol.     

Mechanisms of generation of slow components of bioelectric activity in diagnostics of functional state of the gastrointestinal tract

New electrophysiologic devices were used for the diagnostics of the state of excitable structures in the gastrointestinal tract and correction of their motor functions. Bioelectrical and biomechanical activities form the basis of functioning of internal organs. The mechanisms of generation of slow bioelectrical activity that are important for clinical and physiological studies are described. One of these mechanisms is a capacitance parametric transducer converting the energy of contractions into specific electric signals reflecting muscle functions. Another mechanism results from slow oscillations of resting potentials of interrelated excitable cells in large neuromuscular structures of internal organs. The elaborated procedure is efficient for preventing early postoperative paresis of the gastrointestinal tract. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 128, No. 10, pp. 448–452, October, 1999     

胃小弯侧血管弓的MDCT解剖

目的：研究正常胃小弯侧血管弓及其属支血管的多排螺旋CT表现。方法：回顾性分析51例正常成人的上腹部CT资料,观察胃小弯侧血管弓及其属支血管的显示情况、血管弓形态及其与胃壁的关系。结果：51例均显示胃小弯侧血管弓,血管弓贲门部属支、胃体部属支和幽门部属支分别显示46例、15例和10例;血管弓与胃壁紧邻41例。结论：MDCT检查可良好显示正常胃小弯侧血管弓及其属支血管。     

Assessment of the efficacy of treatment of hemangiomas

Assessment of the aftereffects of cryoexposure and ultrahigh-frequency cryoexposure on hemangioma tissue of various types, cavernous and squamous, showed a higher cryogenic effect in hemangiomatous tissue preexposed to ultrahigh-frequency waves. A quantitative criterion is proposed for assessing the efficacy of the studied methods of exposure. Translated fromByulleten' Eksperimental'noi Biologii i Meditsiny, Vol. 119, N ^o 6, pp. 669–672, June, 1995