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SNAREs蛋白复合物与囊泡融合分子调节机制的研究进展 被引量:5
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作者 陈立强 王洋洋 +2 位作者 司艳辉 梁洁玲 李海珠 《检验医学与临床》 CAS 2015年第10期1462-1463,共2页
细胞内大分子物质及颗粒性物质不能自由穿过细胞膜,必须以囊泡运输的方式进行跨膜转运,囊泡介导的转运方式,无论是正向或是逆向转运,都包括3个主要步骤,分别是外壳蛋白的选择,囊泡的出芽与形成和转运物质的选择[1]。研究表明在囊泡运输... 细胞内大分子物质及颗粒性物质不能自由穿过细胞膜,必须以囊泡运输的方式进行跨膜转运,囊泡介导的转运方式,无论是正向或是逆向转运,都包括3个主要步骤,分别是外壳蛋白的选择,囊泡的出芽与形成和转运物质的选择[1]。研究表明在囊泡运输过程中N-乙基马来酰亚胺敏感因子附着蛋白受体(SNAREs)发挥着重要作用, 展开更多
关键词 snares 囊泡融合 Synaptobrevins Syntaxins 突触相关蛋白
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植物可溶性N-乙基马来酰亚胺敏感因子连接物复合体(SNAREs)及其生物学功能研究进展 被引量:5
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作者 封华 陈晨 +3 位作者 王义琴 邱金龙 储成才 杜希华 《遗传》 CAS CSCD 北大核心 2009年第5期471-478,共8页
在真核生物细胞中,各细胞器间物质和信息的交流是细胞生命活动的基本保证,而囊泡转运是细胞器之间物质和信息交流的主要方式。大多数的囊泡融合过程是由可溶性的N-乙基马来酰亚胺敏感因子连接物复合体(Soluble N-ethyl-maleimide-sensit... 在真核生物细胞中,各细胞器间物质和信息的交流是细胞生命活动的基本保证,而囊泡转运是细胞器之间物质和信息交流的主要方式。大多数的囊泡融合过程是由可溶性的N-乙基马来酰亚胺敏感因子连接物复合体(Soluble N-ethyl-maleimide-sensitive fusion protein attachment protein receptors,SNAREs)介导的,物种间的SNAREs具有高度保守的特性。与其他真核生物相比,植物的基因组编码更多的SNAREs。研究证明,植物的SNAREs是一个多功能的蛋白家族,在植物的许多生理过程中都有着重要的作用。本文对植物SNAREs作用的分子机理及生物学功能的最新研究进展做一概述。 展开更多
关键词 植物snares 囊泡转运 生物学功能
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驱动细胞膜融合的发动机——SNAREs蛋白 被引量:2
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作者 左明雪 《生物学通报》 2012年第1期7-10,共4页
主要介绍了SNARE蛋在在膜融合过程中的核心驱动作用。自1980s后期SNARE蛋白被发现以后,SNAREs就作为细胞膜融合蛋白复合体的关键组分而获得普遍认同。尽管不同SNARE蛋白的基因组成序列存在差异,但它们的功能在进化上似乎是保守的,均涉... 主要介绍了SNARE蛋在在膜融合过程中的核心驱动作用。自1980s后期SNARE蛋白被发现以后,SNAREs就作为细胞膜融合蛋白复合体的关键组分而获得普遍认同。尽管不同SNARE蛋白的基因组成序列存在差异,但它们的功能在进化上似乎是保守的,均涉及细胞生长、膜修复、细胞骨架动力学和突触传递等许多方面的细胞膜融合活动。从这些发现可以看到,膜融合机制展示了SNARE蛋白复合体作为一种超级微型机器工作的迷人画卷。 展开更多
关键词 SNARE蛋白 囊泡 膜融合 拉链模式
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植物病原真菌及卵菌SNAREs基因功能研究进展
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作者 杨明王 张红雪 +3 位作者 霍超 曹继芬 吴德喜 赵志坚 《江苏农业科学》 北大核心 2024年第1期1-10,共10页
植物病原真菌和卵菌产生的效应蛋白在促进病原菌侵染、操纵寄主免疫方面有关键作用,这些效应蛋白在与寄主作用之前必须被分泌出去,SNARE蛋白家族作为真核细胞内囊泡转运及膜融合的关键组分,在分子转运中有核心调控作用。随着许多植物丝... 植物病原真菌和卵菌产生的效应蛋白在促进病原菌侵染、操纵寄主免疫方面有关键作用,这些效应蛋白在与寄主作用之前必须被分泌出去,SNARE蛋白家族作为真核细胞内囊泡转运及膜融合的关键组分,在分子转运中有核心调控作用。随着许多植物丝状病原菌基因组被破译,对SNAREs基因参与病原菌致病机制的研究取得了可喜进展。本研究简要概述了真核生物中SNARE蛋白的组成及分类和植物病原真菌及卵菌中SNARE蛋白基因的功能研究进展,并据此提出进一步开展SNARE蛋白基因功能分析的研究建议,以期为全面、深入研究植物病原真菌和卵菌中SNARE基因的功能、理解病原菌致病、效应蛋白分泌提供新的视野,为植物-病原物互作的分子机制研究提供参考。 展开更多
关键词 植物病原菌 真菌 卵菌 效应分子 SNARE蛋白
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双参益胃颗粒调控胃酸分泌阻断慢性萎缩性胃炎伴肠上皮化生恶性进展机制研究
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作者 王砚敏 余钰玲 +9 位作者 王思齐 孙亚腾 闫永煌 杨欣雨 韩思琪 宋宇宏 王愉涵 王耘赫 张偲 苏泽琦 《中国中药杂志》 北大核心 2025年第24期6928-6938,共11页
探究国医大师路志正教授临床有效经验方“双参益胃颗粒”调控胃酸分泌阻断慢性萎缩性胃炎伴肠上皮化生(GIM)恶性进展的作用机制。将72只SPF级Wistar雄性大鼠按体质量随机分为正常组、造模组,采用“N-甲基-N′-硝基-N-亚硝基胍(MNNG)+雷... 探究国医大师路志正教授临床有效经验方“双参益胃颗粒”调控胃酸分泌阻断慢性萎缩性胃炎伴肠上皮化生(GIM)恶性进展的作用机制。将72只SPF级Wistar雄性大鼠按体质量随机分为正常组、造模组,采用“N-甲基-N′-硝基-N-亚硝基胍(MNNG)+雷尼替丁+饥饱失常+水杨酸钠”四因素综合造模法建立GIM大鼠模型,造模成功后,将造模组大鼠随机分为模型组、阳性药摩罗丹组、双参益胃颗粒组,每组12只,持续干预8周。观察大鼠一般表征;采用苏木精-伊红染色观察胃黏膜病理改变;酶联免疫吸附测定法检测血清胃蛋白酶原Ⅰ(PGⅠ)、胃蛋白酶原Ⅱ(PGⅡ)、胃泌素-17(G-17)水平;透射电镜观察胃壁细胞超微结构;TUNEL染色观察胃腺体细胞凋亡情况;精密pH试纸检测胃液pH;蛋白免疫印迹法检测胃黏膜组织JAK激酶2(JAK2)/信号转导及转录激活蛋白3(STAT3)、肿瘤坏死因子受体1(TNFR1)/含半胱氨酸的天冬氨酸蛋白水解酶8(caspase-8)及周期素依赖性激酶5(CDK5)/可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体(SNAREs)泌酸相关蛋白表达。结果显示,与正常组相比,模型组大鼠精神状态萎靡且伴有眼、耳、爪、舌色淡白,尾脱屑现象;胃黏膜腺体萎缩且排列紊乱,可见肿瘤病理表现;血清PGⅠ、PGⅠ/PGⅡ、G-17水平均显著降低,PGⅡ水平显著升高(P<0.01);胃壁细胞核固缩,线粒体数量减少且结构异常;胃腺体凋亡细胞数目显著增加(P<0.01);胃液pH显著升高(P<0.01);胃黏膜组织磷酸化JAK2(p-JAK2)/JAK2、磷酸化STAT3(p-STAT3)/STAT3、B淋巴细胞瘤-2基因(Bcl-2)相关X蛋白(Bax)/Bcl-2、TNFR1、肿瘤坏死因子受体相关死亡结构域蛋白(TRADD)、Fas相关死亡域蛋白(FADD)、切割含半胱氨酸的天冬氨酸蛋白水解酶8(cleaved caspase-8)/caspase-8水平显著升高(P<0.05,P<0.01),组胺受体H2(HRH2)、CDK5、突触融合蛋白结合蛋白3(STX3)、突触小体相关蛋白-25(SNAP25)蛋白表达显著降低(P<0.05)。与模型组相比,双参益胃颗粒组大鼠精神状态及一般表征、胃黏膜组织病理情况均有不同程度的改善;血清PGⅠ、PGⅠ/PGⅡ、G-17水平均显著升高(P<0.05,P<0.01),PGⅡ水平显著降低(P<0.01);胃壁细胞超微结构有不同程度的改善;胃腺体凋亡细胞数显著减少(P<0.01);胃液pH显著下降(P<0.01);胃黏膜组织p-JAK2/JAK2、p-STAT3/STAT3、Bax/Bcl-2、TNFR1、TRADD、FADD、cleaved caspase-8/caspase-8水平均显著下降(P<0.05,P<0.01),HRH2、CDK5、STX3、SNAP25蛋白表达显著升高(P<0.05)。综上所述,双参益胃颗粒可能通过抑制JAK2/STAT3和TNFR1/caspase-8信号通路减少胃腺体细胞凋亡,同时激活CDK5/SNAREs信号通路增强胃壁细胞泌酸功能,从而改善胃内酸环境,阻断GIM恶性进展。 展开更多
关键词 慢性萎缩性胃炎伴肠上皮化生 双参益胃颗粒 胃内酸环境 胃腺体细胞凋亡 胃壁细胞泌酸功能 JAK2/STAT3 TNFR1/caspase-8 CDK5/snares
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基于酿酒酵母细胞构建靶向囊泡相关膜蛋白2的肉毒神经毒素检测系统 被引量:1
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作者 蒋瑶 陈世林 +2 位作者 李雨晴 谌佳 中西秀树 《生物工程学报》 北大核心 2025年第5期2132-2144,共13页
肉毒神经毒素(botulinum neurotoxins,BoNTs)是一种神经毒性蛋白质,可水解参与突触囊泡融合的可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体(soluble N-ethylmaleimide factor attachment protein receptor,SNARE)。其中,囊泡相关膜蛋白(... 肉毒神经毒素(botulinum neurotoxins,BoNTs)是一种神经毒性蛋白质,可水解参与突触囊泡融合的可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体(soluble N-ethylmaleimide factor attachment protein receptor,SNARE)。其中,囊泡相关膜蛋白(synaptobrevin-2,Sb2)是BoNTs主要靶向的SNARE蛋白之一。本研究旨在开发一种基于酵母的BoNTs检测系统,用于分析靶向Sb-2的BoNTs。鉴于SNARE蛋白在真核生物中的高度保守性,Snc1和Snc2是酿酒酵母中Sb-2的同源物,本研究构建了功能性的SNARE嵌合蛋白,其中Snc2中的SNARE结构域的一部分被Sb-2的相应区域所取代,从而Snc2/Sb2-4嵌合蛋白可以被BoNTs所识别。由于Snc1和Snc2是酵母产孢所必需的,因此在携带Snc2/Sb2-4嵌合蛋白的snc1Δsnc2Δ酵母中,靶向Sb-2蛋白的BoNTs(包括BoNT/B在内)表达后显著降低了孢子的形成效率。然而,在野生型酵母中,BoNTs表达的影响可以忽略不计。产孢效率在本研究中被用作检验BoNTs活性的指标。这种方法的优点在于可以通过荧光比色法来评估酵母的产孢效率,进而反映出BoNTs的活性。最终,本研究基于酵母细胞构建的体系不仅能够简单便捷地分析BoNTs,还能够用于挖掘未鉴定的BoNTs和BoNTs抑制剂。鉴于BoNTs广泛应用于临床和美容领域,该体系有望为发现和优化具有应用价值的BoNTs提供有力支持。 展开更多
关键词 肉毒神经毒素 囊泡相关膜蛋白 可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体(SNARE) 酿酒酵母 孢子
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SNARE复合物在自噬及相关疾病中的研究进展
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作者 李彩银 刘源 +3 位作者 郭柔佳 卜晶晶 闫向丽 栗俞程 《中国病理生理杂志》 北大核心 2025年第1期188-194,共7页
自噬是真核生物中普遍存在的一种保守的生理现象,在饥饿或营养缺乏时通过降解细胞内的蛋白质和细胞器以促进细胞存活。自噬功能障碍与多种疾病密切相关。可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体(soluble N-elthylmaleimide-sensiti... 自噬是真核生物中普遍存在的一种保守的生理现象,在饥饿或营养缺乏时通过降解细胞内的蛋白质和细胞器以促进细胞存活。自噬功能障碍与多种疾病密切相关。可溶性N-乙基马来酰亚胺敏感因子附着蛋白受体(soluble N-elthylmaleimide-sensitive factor attachment protein receptor,SNARE)复合物是一种介导膜融合的蛋白质,在自噬体和溶酶体的融合过程中发挥关键作用。SNARE复合物组装异常可引起自噬流阻滞,进而导致细胞功能紊乱和疾病的发生。本文对SNARE复合物在自噬过程的作用,以及在相关疾病中的最新研究进行总结,为以SNARE复合物为靶点研究自噬和疾病的机制提供参考。 展开更多
关键词 SNARE复合物 自噬 自噬体 溶酶体
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囊泡运输调控植物盐胁迫响应的研究进展
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作者 胡莹洁 杜晨琪 +4 位作者 王鎏帆 寿建昕 王超 徐梅 严旭 《浙江农业学报》 北大核心 2025年第9期2003-2011,共9页
盐胁迫是植物面临的最主要的非生物胁迫之一,为此植物进化出多种策略来应对高盐环境,其中囊泡运输是植物响应盐胁迫的重要机制,它可以通过调节离子稳态、信号转导和细胞结构重塑等方式精准调控植物的生理活动,从而减弱高浓度盐造成的损... 盐胁迫是植物面临的最主要的非生物胁迫之一,为此植物进化出多种策略来应对高盐环境,其中囊泡运输是植物响应盐胁迫的重要机制,它可以通过调节离子稳态、信号转导和细胞结构重塑等方式精准调控植物的生理活动,从而减弱高浓度盐造成的损害。近年来,已有多种囊泡运输关键因子,如网格蛋白、可溶性N-乙酰马来酰亚胺敏感因子附着蛋白受体(soluble N-ethylmaleimide-sensitive factor attachment protein receptor,SNARE蛋白)、小GTP酶等,被证明在平衡植物生长和盐胁迫响应中发挥重要作用。但囊泡运输网络各组分协同响应盐胁迫的分子机制及其在作物耐盐性中的应用潜力仍需深入挖掘。本文综述了囊泡运输调控植物耐盐性的最新研究进展,以期为利用囊泡运输机制培育高产耐盐作物提供新的策略。 展开更多
关键词 植物 盐胁迫 囊泡运输 网格蛋白 SNARE蛋白 小GTP酶
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SNARE复合体在注意缺陷多动障碍多巴胺缺陷机制中的作用
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作者 张雨嫣 吴晨蕾 周荣易 《中国生物化学与分子生物学报》 北大核心 2025年第12期1789-1798,共10页
注意缺陷多动障碍(attention deficit hyperactivity disorder,ADHD)是儿童和青少年常见的神经发育障碍性疾病,临床表现为注意缺陷、多动与冲动控制障碍,其病因及发病机制尚未完全阐明。多巴胺(dopamine,DA)缺陷理论是目前ADHD发病机制... 注意缺陷多动障碍(attention deficit hyperactivity disorder,ADHD)是儿童和青少年常见的神经发育障碍性疾病,临床表现为注意缺陷、多动与冲动控制障碍,其病因及发病机制尚未完全阐明。多巴胺(dopamine,DA)缺陷理论是目前ADHD发病机制研究的核心。基于该理论,针对多巴胺转运体(dopamine transporter,DAT)和多巴胺受体(dopamine receptor,DR)功能的深入研究促成了国际主流药物的开发,这些药物通过提升DA浓度有效缓解症状,进一步验证了DA系统在ADHD中的关键作用。除以上因素外,新近研究表明,DA缺陷的形成存在更为关键的诱因。SNARE复合体(soluble N-ethylmaleimide-sensitive factor attachment protein receptor complex)是介导突触囊泡与质膜融合的核心装置,由突触相关蛋白25(synaptosomal-associated protein 25,SNAP-25)、突触融合蛋白1A(syntaxin-1A,STX1A)和囊泡相关膜蛋白2(vesicle Associated membrane protein 2,VAMP 2,也称为synaptobrevin 2)三者构成。SNARE复合体作为促进DA囊泡分泌的“最小机器”,对突触前膜DA囊泡锚定、膜融合、囊泡胞吐循环的关键环节产生影响。其组装解离过程中,辅助蛋白质的功能失衡可能干扰DA的有效释放,被认为是DA缺陷形成的重要潜在机制之一,亦成为ADHD机制研究的新兴焦点。本文聚焦SNARE复合体,系统梳理其核心蛋白质及调控因子在ADHD发病机制中的作用,为疾病机制解析与靶向干预提供理论支持。 展开更多
关键词 注意缺陷多动障碍 SNARE复合体 多巴胺递质 多巴胺缺陷理论 膜融合
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巴西橡胶树SNARE蛋白全长cDNA克隆及其序列特征分析 被引量:2
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作者 邓柳红 罗明武 张春发 《作物学报》 CAS CSCD 北大核心 2007年第5期826-830,共5页
从巴西橡胶树(Hevea brasiliensis)差减cDNA文库中筛选到一个与SNARE蛋白同源性较高的基因片段,根据其序列信息设计特异引物,采用cDNA末端快速扩增技术RACE(Rapid Amplification of cDNA Ends)进行差异片段的5′和3′端的扩增,获得了长... 从巴西橡胶树(Hevea brasiliensis)差减cDNA文库中筛选到一个与SNARE蛋白同源性较高的基因片段,根据其序列信息设计特异引物,采用cDNA末端快速扩增技术RACE(Rapid Amplification of cDNA Ends)进行差异片段的5′和3′端的扩增,获得了长度为1 070 bp的全长cDNA克隆R295。序列分析表明该基因包含600 bp的开放阅读框,5′-UTR为93 bp,3′-UTR为377 bp,编码199个氨基酸。该基因编码的蛋白具有一个SNARE coiled-coil保守区、一个典型的VAMP基元及一个羧基端的CAAX基元。同源分析表明该蛋白属于一类特殊的longins蛋白。RT-PCR检测表明它在胶乳中特异表达,在叶中没有表达。 展开更多
关键词 巴西橡胶树 胶乳 snares蛋白 Ykt6
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Clinical analysis of cold vs hot snare polypectomy for 10-19 mm non-pedunculated colorectal polyps
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作者 Huang-Yi Dai Shu-Yan Xu 《World Journal of Gastrointestinal Surgery》 2025年第10期298-303,共6页
BACKGROUND Cold snare polypectomy(CSP)is comparatively safe and effective for removing polyps less than 10 mm in size with lower rates of postpolypectomy syndrome and delayed postpolypectomy bleeding compared with hot... BACKGROUND Cold snare polypectomy(CSP)is comparatively safe and effective for removing polyps less than 10 mm in size with lower rates of postpolypectomy syndrome and delayed postpolypectomy bleeding compared with hot snare polypectomy(HSP).Recently,CSP is also expanded for removing polyps larger than 10 mm in size.AIM To compare the efficiency and safety of CSP and HSP in the management of 10-19 mm non-pedunculated colorectal polyps.METHODS A total of 1686 inpatients with at least one 10-19 mm non-pedunculated colorectal polyp,who underwent CSP(study group,n=843)or HSP(control group,n=843)at our Digestive Endoscopy Center between February 2020 and February 2024 were enrolled.The outcome measures including complete resection rate,intraoperative bleeding rate,and healthcare expenses such as procedure time and treatment cost were compared between the CSP vs HSP groups.RESULTS No statistically significant intergroup difference was observed in histological complete resection rates(P>0.05).Polyp resection time in the study group(76.5±23.6 seconds)was notably shorter than that in the control group(91.24±32.06 seconds;P<0.05).The immediate intraoperative bleeding rate was significantly higher in the study group than in the control group(12.7%vs 4.9%,P<0.05).No instances of delayed bleeding or perforation were documented in either group.Hospitalization duration was significantly reduced in the study group(2.42±0.61 days)compared to the control group(3.21±1.02 days;P<0.05).CONCLUSION For 10-19 mm non-pedunculated colorectal polyps,CSP demonstrates operational efficiency advantages over HSP in terms of procedure time,treatment cost,and length of hospital stay.Both techniques demonstrate robust safety profiles;however,CSP is associated with a higher intraoperative bleeding rate.Clinical decision-making should incorporate individualized assessment of these factors. 展开更多
关键词 Non-pedunculated colorectal polyps Cold snare polypectomy Hot snare polypectomy POLYPECTOMY
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Removal of gastrointestinal foreign body
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作者 Dusan Dj Popovic 《World Journal of Gastrointestinal Endoscopy》 2025年第8期125-127,共3页
The minireview titled“Modern endoscopist’s toolbox:Innovations in foreign body removal”by Shahid and published in the World Journal of Gastrointestinal Endoscopy provided a clear and comprehensive overview of endos... The minireview titled“Modern endoscopist’s toolbox:Innovations in foreign body removal”by Shahid and published in the World Journal of Gastrointestinal Endoscopy provided a clear and comprehensive overview of endoscopic management of gastrointestinal foreign bodies.It will serve as a valuable resource for endoscopists involved in the diagnosis and treatment of such cases.Several key and controversial aspects of patient management were highlighted in a meaningful way,including the importance of thorough medical history-taking,appropriate use of radiological imaging,and the selection of suitable endoscopic extraction techniques.An individualized,multidisciplinary approach is essential for diagnosis and treatment.While current guidelines offer significant support,they cannot replace the judgment of an experienced endoscopist working with a well-trained team. 展开更多
关键词 Foreign body removal ENDOSCOPY Upper endoscopy FORCEPS SNARE ANESTHESIA
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Modern endoscopist’s toolbox:Innovations in foreign body removal
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作者 Yumna Shahid 《World Journal of Gastrointestinal Endoscopy》 2025年第6期6-15,共10页
Foreign body ingestion is a common gastrointestinal emergency,particularly in children,who account for 80%of cases.While most ingested objects pass spontan-eously,around 20%require medical intervention.In adults,incid... Foreign body ingestion is a common gastrointestinal emergency,particularly in children,who account for 80%of cases.While most ingested objects pass spontan-eously,around 20%require medical intervention.In adults,incidents often occur accidentally during meals,leading to impactions,especially in individuals with underlying esophageal conditions.Endoscopy remains the gold standard for foreign body retrieval,with a success rate exceeding 95%.The type,shape,and location of the foreign body determine the clinical presentation and management approach.Sharp objects,batteries,and large items pose the highest risk of complications,including perforation,obstruction,and chemical injury.Prompt endoscopic removal is guided by established protocols,with emergent inter-vention required for complete esophageal obstruction and high-risk objects.Various retrieval devices,including forceps,snares,baskets,and overtubes,are used based on the nature of the foreign body.Technological advancements,such as artificial intelligence-assisted imaging and endoscopic ultrasound,are impro-ving diagnostic precision and procedural outcomes.Despite these advances,foreign body ingestion can still lead to severe complications if not managed in a timely manner.Public awareness,preventive measures,and rapid medical res-ponse are essential in reducing morbidity and mortality associated with foreign body ingestion. 展开更多
关键词 Foreign body removal ENDOSCOPY SNARE Forcep Food bolus Modern techniques
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Evaluation of efficacy and safety of different endoscopic polypectomy techniques for colonic polyps
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作者 De-Hui Ji Zhong-An Guan 《World Journal of Gastrointestinal Surgery》 2025年第9期79-90,共12页
BACKGROUND Colorectal polypectomy is fundamental to the prevention of colorectal cancer,utilizing several endoscopic techniques.Robust comparative data regarding the efficacy and safety of these modalities in clinical... BACKGROUND Colorectal polypectomy is fundamental to the prevention of colorectal cancer,utilizing several endoscopic techniques.Robust comparative data regarding the efficacy and safety of these modalities in clinical practice are limited.AIM To evaluate and compare the efficacy and safety of three endoscopic polypectomy techniques,namely,high-frequency electroresection(HFE),cold snare polypectomy(CSP),and endoscopic mucosal resection(EMR),for the treatment of colonic polyps.METHODS This single-center retrospective cohort study included adults who underwent endoscopic resection of pathologically confirmed colorectal polyps at Central Hospital Affiliated to Shandong First Medical University between January 2015 and December 2023.Patients were grouped by technique:HFE(n=107),CSP(n=106),and EMR(n=108).Standardized preoperative,intraoperative,and postoperative protocols were applied.Outcome measures included resection status(en bloc,R0,R1,and Rx),adverse events(immediate/delayed bleeding,perforation,and post-polypectomy coagulation syndrome),postoperative pain(visual analog scale at 1,3,and 5 hours),and 12-month recurrence rate.RESULTS Baseline demographics and polyp characteristics,except for polyp diameter,were comparable among groups.CSP achieved the highest en bloc resection rate,whereas HFE had a higher R0 resection rate.Polyp diameter was largest in the EMR group.Procedure duration was shortest with HFE.Adverse reactions were more frequent with HFE,particularly post-polypectomy bleeding and delayed perforation,whereas CSP demonstrated a superior safety profile and the lowest incidence of complications.Postoperative pain diminished in all groups over time but was consistently low for CSP and EMR.Recurrence rates were significantly higher in the EMR group vs CSP group,with HFE showing intermediate recurrence.CONCLUSION CSP offers the best safety profile and lowest recurrence rate among patients undergoing endoscopic resection of colorectal polyps,whereas HFE confers a high R0 resection rate but increased risk of adverse events.EMR remains essential for large polyps despite elevated recurrence.Technique selection should be tailored according to polyp characteristics and patient risk factors to optimize outcomes. 展开更多
关键词 Endoscopic polypectomy Colonic polyps High-frequency electroresection Cold snare polypectomy Endoscopic mucosal resection
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Postoperative recovery and bleeding risk after endoscopic snare cold resection in patients with 5-15 mm colorectal polyps
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作者 Li-Li Lv Xiao-Xuan Ying +3 位作者 Huang-Min Wu Xiang-Yu Shi Qing-Qing Zhang Hong Zhao 《World Journal of Gastrointestinal Surgery》 2025年第10期174-180,共7页
BACKGROUND Endoscopic cold snare resection(CSP)can enhance postoperative recovery and minimize bleeding risk in patients with 5-15 mm colorectal polyps.However,more detailed evaluations are required to assess their ad... BACKGROUND Endoscopic cold snare resection(CSP)can enhance postoperative recovery and minimize bleeding risk in patients with 5-15 mm colorectal polyps.However,more detailed evaluations are required to assess their advantages over conventional methods.AIM To evaluate the effects of endoscopic CSP on postoperative recovery and bleeding risk in patients with 5-15 mm colorectal polyps.METHODS This randomized controlled study included 193 patients(mean age:57.91±5.41 years;97 men and 96 women)with 5-15 mm colorectal polyps treated at Dongyang People's Hospital between March and June 2023.The patients were randomly assigned to the experimental group(n=100),who underwent CSP,and the control group(n=93),who underwent conventional endoscopic mucosal resection(EMR).Operation time,hospital stay,dietary status,and bleeding rate within 3 days were compared.RESULTS The CSP group had significantly shorter operation times(15.02±2.44 minutes vs 18.78±5.48 minutes,P<0.001)and hospital stays(3.11±1.08 days vs 4.89±1.35 days,P<0.001)than the EMR group.The fasting rate on the day of surgery was also lower in the CSP group(P<0.05).The complete resection rates were similar between groups(98.00%vs 94.62%,P=0.210),and no perforations occurred in either group.The 3-day postoperative bleeding rate was slightly lower in the CSP group(2.00%)than in the EMR group(6.45%),although this difference was not statistically significant(P=0.234),indicating limited clinical relevance.CONCLUSION CSP was safe and efficient for removing 5-15 mm colorectal polyps,offering faster recovery and comparable safety to EMR.The procedural efficiency of CSP supports its broad clinical application. 展开更多
关键词 Endoscopic cold snare resection Colorectal polyps Postoperative recovery Bleeding rate Randomized controlled trial
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Efficacy-cost analysis of endoscopic mucosal resection and cold snare polypectomy:A propensity score matching analysis
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作者 Shi-Yi Zhang Ying-Chun Wang +2 位作者 Lei-Lei Liu Zhi-Heng Wang Xue-Mei Guan 《World Journal of Gastrointestinal Surgery》 2025年第2期77-86,共10页
BACKGROUND Although substantial evidence supports the advantages of cold snare polypectomy(CSP)in terms of polypectomy efficacy and reduced postoperative adverse events,few studies have examined the cost differences b... BACKGROUND Although substantial evidence supports the advantages of cold snare polypectomy(CSP)in terms of polypectomy efficacy and reduced postoperative adverse events,few studies have examined the cost differences between CSP and traditional endoscopic mucosal resection(EMR)for the treatment of intestinal polyps.AIM To compare the efficacy-cost of EMR and CSP in the treatment of intestinal polyps.METHODS A total of 100 patients with intestinal polyps were included in the retrospective data of our hospital from April 2022 to May 2023.According to the treatment methods,they were divided into EMR(n=46)group and CSP(n=54)group.The baseline data of the two groups were balanced by 1:1 propensity score matching(PSM),and the cost-effectiveness analysis was performed on the two groups after matching.The recurrence rate of the two groups of patients was followed up for 1 year,and they were divided into recurrence group and non-recurrence group according to whether they recurred.Multivariate logistic regression analysis was used to screen out the influencing factors affecting the recurrence of intestinal polyps after endoscopic resection.RESULTS Significant disparities were observed in the number of polyps and smoking background between the two groups before PSM(P<0.05).Following PSM,the number of polyps and smoking history were well balanced between the EMR and CSP groups.The direct cost incurred by the CSP group was markedly higher than that incurred by the EMR group.Concurrently,the cost-effectiveness ratio in the CSP group was substantially reduced when juxtaposed with that in the EMR group(P<0.05).Upon completion of the 1-year follow-up,the rate of recurrence after endoscopic intestinal polypectomy was 38.00%.Multivariate methods revealed that age≥60 years,male sex,number of polyps≥3,and pathological type of adenoma were risk factors for recurrence after endoscopic intestinal polypectomy(all P<0.05).CONCLUSION CSP was more cost-effective for the treatment of intestinal polyps.An age≥60 years,male sex,having a number of polyps≥3,and pathological type of adenoma are independent influencing factors for recurrence. 展开更多
关键词 Propensity score matching method Endoscopic mucosal resection Cold snare polypectomy Intestinal polyps Curative effect Cost analysis
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Endoscopic treatment modalities for colonic diverticular bleeding:A systematic review with direct and network meta-analyses
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作者 Zahid Ijaz Tarar Mustafa Gandhi +6 位作者 Faisal Inayat Umer Farooq Baltej Singh Ahtshamullah Chaudhry Aun Muhammad Ahmad Zain Faisal Kamal 《World Journal of Gastrointestinal Endoscopy》 2025年第8期91-103,共13页
BACKGROUND Colonic diverticular bleeding(CDB)is a leading cause of lower gastrointestinal hemorrhage that has a high risk of recurrence.The endoscopic clipping and endoscopic band ligation(EBL)methods are widely used ... BACKGROUND Colonic diverticular bleeding(CDB)is a leading cause of lower gastrointestinal hemorrhage that has a high risk of recurrence.The endoscopic clipping and endoscopic band ligation(EBL)methods are widely used for hemostasis in patients with CDB.Endoscopic detachable snare ligation(EDSL)has also become an increasingly common treatment option.The data remain inconsistent regarding the comparative efficacy of these endoscopic therapies in achieving initial hemostasis and reduction of early and late rebleeding rates.AIM To study the effectiveness and complications of endoscopic clipping,EBL,and EDSL for CDB.METHODS We conducted a systematic search of PubMed/MEDLINE,Scopus,Web of Science,Embase,Google Scholar,and the Cochrane database for clinical trials to find studies that reported CDB and endoscopic clipping,EBL,or EDSL as treatment methods.The pooled estimates of initial hemostasis,early and late rebleeding,and the need for transarterial embolization or surgery between these groups were calculated.RESULTS We analyzed 28 studies with 5224 patients.Of these,4526 had active CDB and required one of the three endoscopic interventions.The pooled prevalence of early rebleeding was 23.5%,10.7%,and 10.6%in the endoscopic clipping,EBL,and EDSL groups,respectively.Patients who underwent endoscopic clipping had a significantly higher rate of early rebleeding compared to those who received EBL[odds ratio(OR)=3.76(95%CI:2.13-6.63)]and EDSL(OR=3.30,95%CI:1.28-8.53).There was no difference in the initial hemostasis between the three groups.The pooled prevalence of late rebleeding was 27.2%in the clipping,followed by 13.8%in the EBL and 2.7%in the EDSL group.Compared to 2.6%in the EBL group,4.0%of patients who received endoscopic clipping subsequently underwent surgery or transarterial embolization.These results were consistent in the network meta-analysis.Based on the ranking of the indirect comparison of modalities,the snare technique was better at achieving initial hemostasis and had a lower late rebleeding rate.CONCLUSION The findings of this direct and indirect pairwise comparison suggest that EDSL is superior to endoscopic clipping and EBL in achieving initial hemostasis and lowering the rate of late rebleeding in patients with CDB. 展开更多
关键词 Colonic diverticular bleeding Endoscopic clipping Endoscopic band ligation Endoscopic detachable snare ligation HEMOSTASIS REBLEEDING Meta-analysis
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一种增加毕赤酵母生产胰岛素前体的方法 被引量:1
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作者 梁晨晨 王立 +1 位作者 罗秋玲 吴静 《生物工程学报》 CAS CSCD 北大核心 2017年第7期1178-1189,共12页
为了提高胰岛素前体(PI)的产量,构建了p PIC9K-PI表达载体并电转化至毕赤酵母菌株GS115中,在浓度为4.0 mg/m L的G418抗性平板上筛选到了1株拷贝数为12的菌株CL012。将SNAREs(可溶性N-乙基马来酰亚胺敏感因子受体蛋白)组分中的SNC2和SNC2... 为了提高胰岛素前体(PI)的产量,构建了p PIC9K-PI表达载体并电转化至毕赤酵母菌株GS115中,在浓度为4.0 mg/m L的G418抗性平板上筛选到了1株拷贝数为12的菌株CL012。将SNAREs(可溶性N-乙基马来酰亚胺敏感因子受体蛋白)组分中的SNC2和SNC2-SSO2分别转入菌株CL012中,并在摇瓶和5 L发酵罐水平上检测SNAREs对PI产量的影响。结果表明:摇瓶水平上,甲醇诱导96 h后,菌株CL012的PI产量为1.53 mg/L;表达SNC2和SNC2-SSO2的菌株的PI产量分别为1.89 mg/L和2.21 mg/L,分别比菌株CL012提高了23.53%和44.44%。在5 L发酵罐上进行高密度发酵,甲醇诱导96 h后菌株CL012的PI产量为53 mg/L,是摇瓶水平的34.64倍;表达SNC2和SNC2-SSO2的菌株的PI产量分别达到64 mg/L和78 mg/L,分别比菌株CL012提高了20.75%和47.17%。由此得出结论 SNAREs可以促进胰岛素前体的分泌,从而提高在毕赤酵母中的异源表达。 展开更多
关键词 毕赤酵母 胰岛素前体 snares 异源表达
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Ykt6结构与膜融合功能研究进展 被引量:1
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作者 肖娟 马卫列 +1 位作者 丁航 张志珍 《现代医学》 2015年第8期1082-1086,共5页
真核细胞含有复杂的内膜系统,细胞内的物质交换通过囊泡运输方式来完成。囊泡运输主要包括运输囊泡的出芽、定向移动、锚定和膜融合等过程,SNAREs蛋白在膜融合过程中发挥重要作用。SNAREs分为定位于运输囊泡上的v-SNARE和定位于靶位膜上... 真核细胞含有复杂的内膜系统,细胞内的物质交换通过囊泡运输方式来完成。囊泡运输主要包括运输囊泡的出芽、定向移动、锚定和膜融合等过程,SNAREs蛋白在膜融合过程中发挥重要作用。SNAREs分为定位于运输囊泡上的v-SNARE和定位于靶位膜上的t-SNARE,二者相互作用形成SNARE复合体,促进膜融合的发生。Ykt6是真核生物高度保守的一种SNAREs蛋白,由N-末端longin结构域、SNARE core结构域和C-末端CAAX盒组成。细胞质中longin结构域、SNARE core结构域和脂质相互作用具有多种构象。棕榈酰化的Ykt6由无活性的自抑构象转变为有活性的开放构象参与囊泡转运过程,在膜融合和囊泡融合中起着重要作用。本文主要介绍近年来有关SNARE Ykt6的结构与功能研究进展。 展开更多
关键词 snares 囊泡转运 膜融合 Ykt6 文献综述
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针刺对抑郁症大鼠海马SNARE蛋白介导突触前谷氨酸释放的影响 被引量:5
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作者 樊凌 赵蒨琦 +6 位作者 吕爱平 许能贵 刘建华 李滋平 吴泰相 欧爱华 符文彬 《中国老年学杂志》 CAS CSCD 北大核心 2016年第13期3123-3126,共4页
目的探讨针刺对抑郁症的治疗作用及其可能的治疗靶点。方法采用长期不可预见的温和性刺激建立大鼠抑郁症模型。成功造模后,给予利鲁唑和针刺治疗,观察各组大鼠行为学的变化,测定海马组织谷氨酸的含量变化;应用Western印迹和荧光定量PCR... 目的探讨针刺对抑郁症的治疗作用及其可能的治疗靶点。方法采用长期不可预见的温和性刺激建立大鼠抑郁症模型。成功造模后,给予利鲁唑和针刺治疗,观察各组大鼠行为学的变化,测定海马组织谷氨酸的含量变化;应用Western印迹和荧光定量PCR检测突触小体相关蛋白(SNAP)-25、突触小泡膜相关蛋白(VAMP)1、VAMP2、VAMP7和syntaxin1蛋白及相应mRNA表达。结果与空白组相比,应激后大鼠的活动能力、体重和蔗糖消耗量明显下降(P<0.05);海马组织谷氨酸含量显著升高(P<0.01);而经利鲁唑和针刺治疗后,活动能力、体重和蔗糖消耗量升高;海马组织谷氨酸含量下降。Western印迹和RT-PCR结果显示:模型组大鼠的SNAP-25、VAMP1、VAMP2、VAMP7和syntaxin1表达量显著高于空白组(P<0.05);与模型组相比,利鲁唑和针刺组均能降低SNAP-25、VAMP1、VAMP2、VAMP7和syntaxin1表达水平,且利鲁唑组与针刺组对各检测指标的影响均无显著性差异(P>0.05)。结论针刺对谷氨酸释放有明显的调节作用,可溶性NSF附着蛋白受体(SNARE)介导的突触前谷氨酸释放在抑郁症的发病以及针刺抗抑郁过程中有重要作用,可能是针刺抗抑郁的靶点之一。 展开更多
关键词 针刺 抑郁症 海马 SNARE蛋白 谷氨酸
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