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分子生物学特征

分子生物学特征的相关文献在1992年到2022年内共计83篇,主要集中在肿瘤学、畜牧、动物医学、狩猎、蚕、蜂、基础医学 等领域,其中期刊论文75篇、会议论文8篇、专利文献511988篇;相关期刊68种,包括韶关学院学报、塔里木大学学报、四川动物等; 相关会议8种,包括纪念中国微生物学会成立六十周年大会暨2012年中国微生物学会学术年会、第五次全国免疫诊断暨疫苗学术研讨会、2011年北京医学会消化系病学术年会等;分子生物学特征的相关文献由325位作者贡献,包括乔军、付士红、冯云等。

分子生物学特征—发文量

期刊论文>

论文:75 占比:0.01%

会议论文>

论文:8 占比:0.00%

专利文献>

论文:511988 占比:99.98%

总计:512071篇

分子生物学特征—发文趋势图

分子生物学特征

-研究学者

  • 乔军
  • 付士红
  • 冯云
  • 刘枫
  • 刘童斌
  • 周国雄
  • 张弘
  • 张海林
  • 李兆申
  • 杨倩
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 刘明生; 甘辉群; 吴双; 傅宏庆; 钟美娟
    • 摘要: 新型鹅细小病毒病是一种由新型鹅细小病毒(novel goose parvovirus,NGPV)引起的病毒性传染病。临床上以鸭喙变短、舌头外伸、胫骨短粗、跛行瘫痪等为特征,又称短喙侏儒综合征(short beak and dwarfism syndrome,SBDS)。该病发病率为10%~30%,可对我国养鸭业造成严重的经济损失。文章对新型鹅细小病毒病的病原学特征、分子生物学特征、临床诊断特征及检测技术等研究成果进行综述,以期为新型鹅细小病毒病的综合防控提供参考。
    • 潘康奉; 贺红艳; 崔运能; 张大伟; 姚亮凤
    • 摘要: 目的:分析乳腺癌患者磁共振成像与分子生物学特征之间关系。方法:择取128例乳腺癌患者,行磁共振成像检查,分析影像特征及与乳腺癌分子生物学特征的关系。结果:Her-2阳性患者早期强化率高于Her-2阴性,组间有统计学差异(t=-2.048,P=0.044)。ER阳性患者达峰时间高于ER阴性,组间有统计学差异(Z=-1984,P=0.048)。ER阳性表达与达峰时间之间呈现出正向相关关系(rs=0.191,P0.031)。ki-67高增殖达峰时间低于ki-67低增殖,组间有统计学差异(Z=-2.557,P=0.012)。结论:乳腺癌患者磁共振成像特点与分子生物学特征之间存在一定相关性。
    • 陈晓娟; 邹尧; 刘晓明; 杨文钰; 郭晔; 阮敏; 刘芳; 陈玉梅; 张丽; 王书春; 竺晓凡
    • 摘要: 目的探讨CCLG-ALL2008方案治疗具有不同分子生物学特征的初诊儿童急性淋巴细胞白血病(ALL)的长期疗效。方法选取按照CCLG-ALL2008方案治疗的940例初诊ALL患儿为研究对象,针对不同分子生物学特征ALL的长期疗效进行回顾性分析。结果 940例ALL患儿中,男570例,女370例,中位年龄5(1~15)岁,中位随访时间65(3~123)个月。完全缓解(CR)率为96.7%,预期10年总体生存(OS)率为(76.5±1.5)%,无事件生存(EFS)率为(62.6±3.0)%。患儿经治疗达CR后,总复发率为21.9%,其中ETV6-RUNX1阳性患儿复发率最低,且易于晚期复发;MLL重排阳性患儿复发率最高,且易于早期复发。ETV6-RUNX1阳性患儿的预期10年OS率明显高于伴有TCF3-PBX1阳性、BCR-ABL阳性、MLL重排及无分子生物学特征患儿(P < 0.05)。ETV6-RUNX1阳性患儿的预期10年EFS率明显高于伴有BCR-ABL阳性和MLL重排患儿(P < 0.05)。结论分子生物学特征是影响ALL患儿长期预后的指标,MLL重排、BCR-ABL融合基因阳性是预后的不良指标,ETV6-RUNX1融合基因阳性患儿长期生存率较高。
    • 崔晓云1; 吴艳花1; 安静1
    • 摘要: 寨卡病毒病(Zika virus disease,ZVD)是由寨卡病毒(Zika Virus,ZIKV)感染引起的一种发热性自限性疾病,近几年来ZVD疫情在全球呈现暴发的势态,由“无名小卒”迅速成长为严重威胁全球公共卫生的“主力”。本文拟对ZIKV的流行病学特点,生物学特征以及引起的主要临床症状进行综述,以期为广大临床工作者在诊断ZIKV感染时做一提示。
    • 张玲; 孙月; 陈勇; 郜桂菊; 杨思园; 万康林; 李兴旺
    • 摘要: 目的:了解获得性免疫缺陷综合征(AIDS)合并结核病(TB)患者感染结核分枝杆菌二线药物耐药特点。方法选取2010年4月至2012年10月于北京大学地坛医院教学医院住院的艾滋病合并结核病患者标本,由中国疾病预防控制中心培养鉴定。进行4种一线药物(异烟肼、利福平、链霉素、乙胺丁醇)和4种二线药物(卷曲霉素、卡那霉素、氧氟沙星、乙硫异烟胺)药敏试验监测,并对所有菌株在gyrA、gyrB、rrs、tlya、eis和ethA基因位点进行DNA测序以检测基因多态性。结果经培养鉴定共得到31株结核分枝杆菌,其中12株耐卷曲霉素,8株耐氧氟沙星,4株耐卡那霉素,5株耐乙硫异烟胺,耐药率分别为38.71%、25.81%、12.90%和16.13%。7株菌为耐多药菌株,1株菌为广泛耐药菌株,耐药率分别为22.58%和3.23%。耐药菌株最常见的突变位点是rrs1401,gyrA94和gyrA90。一线敏感菌株中氧氟沙星的耐药率显著低于一线耐药菌株(P =0.012)。性别与结核分枝杆菌耐药差异无统计学意义(P =0.533),年龄>40岁组的氧氟沙星耐药率低于其余两组(P =0.043)。结核初治组与复治组患者二线耐药率、CD4水平差异无统计学意义(P =0.333、0.307)。结论 AIDS合并TB患者存在二线抗结核药物原发耐药,其中卷曲霉素耐药率最高,其次是氧氟沙星。%Objective To explore the second-line drug resistance and molecular characterization of Mycobacterium tuberculosis in patients with acquired immune deficiency syndrome (AIDS) and tuberculosis (TB). Methods Specimens of patients with AIDS and TB, hospitalized in Beijing Ditan Hospital, Peking University Teaching Hospital from April 2010 to Octomber 2012, were collected and sent to CDC for identification. Four first-line drugs (isoniazid, rifampicin, streptomycin and ethambutol) and four second-line drugs (capreomycin, kanamycin, ofloxacin and ethionamide) susceptibility tests were taken and gyrA, gyrB, rrs, tlya, eis, ethA loci were detected for genetic polymorphisms. Results Total of 31 Mycobacterium tuberculosis strains were identified, while 12 isolates showed resistance to capreomycin, 8 strains resistance to ofloxacin, 4 strains resistance to kanamycin and 5 strains resistance to ethionamide. The drug resistance rates were 38.71%, 25.81%, 12.90% and 16.13%, respectively. Besides, 7 multidrug-resistant isolates and one extensively drug-resistant isolate were identified and the drug resistance rates were 22.58% and 3.23%, respectively. The most frequent mutation loci were rrs1401, gyrA94 and gyrA90. Ofloxacin drug resistance rate was significantly higher in isolates resistant to first-line drugs than first-line drugs sensitive isolates (P = 0.012). Gender was not associated with drug resistance (P = 0.533). Ofloxacin drug resistance rate was significantly lower in > 40 years old group than the other two groups (P = 0.043). There was no drug resistance and CD4 level difference between initial treated group and retreated group (P = 0.333, 0.307). Conclusions There existed primary drug resistance of second-line anti-tuberculosis drugs in patients with AIDS and TB. Capreomycin drug resistance rate was the highest followed by ofloxacin.
    • 喻哲昊; 朱宇旌; 张勇; 李方方
    • 摘要: Nesfatin-1是由核组蛋白2( NUCB2)衍生而来的肽段,是一种由下丘脑和外周组织表达的厌食信号肽,通过使动物产生饱腹感而抑制动物摄食。研究者发现,Nesfatin-1除了通过抑制动物摄食调节机体内稳态与能量储备,还参与初情启动和胰岛素抵抗等多种生理过程,具有多种生物学功能,本文综述了Nesfatin-1/NUCB2的分子生物学特征、功能及其基因表达的营养调控。%Nesfatin-1 is a peptide fragment driven from nucleobindin 2 ( NUCB2) in hypothalamus and periph-eral tissues, and inhibit animal feed intake by satiety.Researchers found that Nesfatin-1 not only modified the whole-body homeostasis and energy storage through inhibiting feed intake, but also played roles in many physi-ological processes such as regulating puberty onset and insulin resistance and so on, with a variety of biological functions.This article reviewed the molecular biological characteristics, functions and nutritional regulation in gene expression of Nesfatin-1/NUCB2.
    • 高菽蔓; 靳红亮; 马嫄; 扈荣良
    • 摘要: 副流感病毒5型(Parainfluenza virus 5,PIV5)为一类不分节段单股负链RNA病毒,可引起多种动物呼吸道感染,尤其可致犬病发"犬窝咳".本文围绕PIV5病毒特征、基因组特征、编码蛋白、病毒的转录与复制以及PIV5相关疫苗的研究做一综述,旨在为PIV5疾病监测和PIV5相关疫苗研究提供科学依据.%Parainfluenza virus 5 (PIV5) is nonsegmented negative-strand RNA virus which can infect various mammals including humans, especially causing kennel cough. This paper comprehensively introduces biological characteristics of PIV5 concerning their feature, genomic characteristics, proteins, transcription and replication, and research of vaccines based on PIV5, and aims at providing scientific basis about the study on the surveillance of PIV5-related diseases and PIV5 and PIV5-vectored vaccine.
    • 程辉; 黄崇媚; 邱慧颖; 胡晓霞; 陈莉; 唐古生; 章卫平; 宋献民; 王健民
    • 摘要: Objective To investigate the molecular biological characteristics of bcr-abl positive acute lymphoblastic leukemia, and to evaluate clinical efficacy and prognosis.Methods 35 newly diagnosed patients with bcr-abl positive acute lymphoblastic leukemia from March 2009 to March 2014 were retrospectively analyzed.The clinical efficacy and prognosis were evaluated through comparing and analyzing the first complete remission (CR1) time, overall survival (OS) and relapse rate (RR) among different induction chemotherapy regimens, between the different gene transcripts as well as between transplantation and nontransplantation.Results 35 patients were treated with four different induction chemotherapy regimens combined with imatinib.There were 21 male cases and 14 female cases among 35 patients, and their median age was 38 years old (16-65 years old).According to the gene transcript, the patients were divided into p190 positive group including 26 cases (74.28 %) with the median gene expression level 0.582 4 (0.123 3-0.976 0) and p210 positive group including 9 cases (25.72 %) with the median gene expression level 0.623 5 (0.097 4-0.959 2).Median follow-up time was 12 months, then CR1-reaching time of the four induction chemotherapy regimens was not different statistically (P =0.518).CR1-reaching time in p190 positive group was extended (P =0.016), and overall survival (P =0.167) and the relapse rate (P =0.164) were no differences compared with those in p210 positive group.Allogeneic hematopoietic stem cell transplantation was performed in 16 morphology CR patients after chemotherapy.The median survival time of transplantation group was 32 months (7-43 months), and that of non-transplantation group was 13 months (4-18 months) (P =0.017), but their RR difference was no statistical significance (P =0.072).Conclusions The CR1-reaching time of bcr-abl positive acute lymphoblastic leukemia patients has no obvious difference in the four induction chemotherapy regimens combined with imatinib.The CR1-reaching time of patients with p190 positive is obviously prolonged compared with that with p210 positive, but the OS and RR have no significant difference.Allogeneic hematopoietic stem cell transplantation can improve the OS.%目的 探讨bcr-abl阳性急性淋巴细胞白血病的分子生物学特点以及在目前治疗条件下的临床疗效和预后.方法 回顾性分析2009年3月至2014年3月收治的35例初发bcr-abl阳性急性淋巴细胞白血病患者资料,比较不同化疗方案、不同转录本及移植与非移植之间达到第一次完全缓解(CR1)时间、生存及复发的差异,评价临床疗效及预后.结果 35例初发bcr-abl阳性急性淋巴细胞白血病患者中,男性21例,女性14例,中位年龄38岁(16 ~ 65岁),白细胞计数中位水平29.5×109/L(1.33× 109/L~ 192.45×109/L).转录本p190阳性26例(74.28%),mRNA中位相对表达水平0.5824(0.123 3~0.976 0),p210阳性9例(25.72%),mRNA中位相对表达水平0.623 5(0.097 4 ~ 0.959 2).中位随访12个月.35例初发患者采用4种不同的诱导化疗方案联合伊马替尼进行治疗,四组不同化疗方案达到CR1时间差异无统计学意义(P=0.518);转录本p190阳性组患者达到CR1时间较转录本p210阳性组患者延长(P=0.016),但两组总生存(P=0.167)及复发(P=0.164)均差异无统计学意义.16例患者化疗缓解后进行了异基因造血干细胞移植,移植组中位生存时间32个月(7~43个月),非移植组中位生存时间13个月(4~18个月)(P=0.017),但复发率差异无统计学意义(P=0.072).结论 在联合伊马替尼治疗条件下,不同诱导化疗方案对bcr-abl阳性急性淋巴细胞白血病疗效及预后无明显影响,转录本p190阳性患者疗效较转录本p210阳性患者差,但总生存与复发率无差异;异基因造血干细胞移植明显延长了患者的生存时间.
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