淡色库蚊抗药性相关基因--NYD-MLC2基因的克隆与分析

目的:获取淡色库蚊抗药性相关基因NYD-MLC2的cDNA全长序列并鉴定其在抗性品系和敏感品系中的表达差异。方法:根据抑制性差减杂交(SSH)结合cDNA芯片分离获得的淡色库蚊抗药性相关NYD-MLC2基因片段序列设计引物,采用快速扩增cDNA末端法(rapidamplificationofcDNAends,RACE)扩增NYD-MLC2基因3′、5′端,经对位拼接获得全长序列,并进行生物信息学分析;荧光定量PCR验证此基因在抗性和敏感品系的表达差异。结果:获得淡色库蚊NYD-MLC2cDNA全长序列,开放阅读框为630bp(GenBank/NCBIDQ140391),编码210个氨基酸。蛋白质序列分析显示,NYD-MLC2与冈比亚按蚊(Anophelesgambiae)一个未知功能的蛋白同源性最高,为91%;实时荧光定量PCR结果显示,NYD-MLC2在淡色库蚊溴氰菊酯抗性品系中的表达量是敏感品系的4.08倍。结论:获得淡色库蚊抗药性相关NYD-MLC2基因cDNA全长序列,并证实其在淡色库蚊溴氰菊酯抗性品系中高表达,提示NYD-MLC2与淡色库蚊溴氰菊酯抗药性相关,值得进一步研究。     

淡色库蚊抗性相关基因--NYD-GBE基因的克隆与分析

目的:获取淡色库蚊抗药性相关NYD-GBE基因cDNA全长序列并验证其在抗性品系和敏感品系中的表达差异。方法:根据抑制性差减杂交(SSH)结合cDNA芯片分离获得的淡色库蚊抗性相关NYD-GBE基因片段设计引物,采用快速扩增cDNA末端法(rapidamplificationofcDNAends,RACE)扩增糖原分支酶基因5′、3′端,经对位拼接获得全长序列,并用相应的软件进行生物信息学分析。结果:获得淡色库蚊NYD-GBEcDNA全长序列,开放阅读框为2070bp(GeneBank/NCBIDQ102393),编码689个氨基酸。蛋白质序列分析显示,NYD-GBE与冈比亚按蚊(Anophelesgambiae)和拟暗果蝇(Drosophilapseudoobscura)一个未知功能的蛋白同源性最高,为82%和72%,与人糖原分支酶的基因同源性次之为60%。荧光定量PCR结果显示,NYD-GBE在淡色库蚊溴氰菊酯抗性品系中的表达量是敏感品系的19.7倍。结论:获得淡色库蚊抗药性相关NYD-GBE基因全长cDNA序列,并证实其在淡色库蚊溴氰菊酯抗性品系中高表达,提示NYD-GBE与淡色库蚊溴氰菊酯抗性相关,值得进一步研究。     

安康市淡色库蚊对常用杀虫剂的抗性状况及防制对策的研究

目的掌握安康市淡色库蚊对常用杀虫剂的抗性现状,研究防制对策。方法采用区分剂量法测定淡色库蚊幼虫对4种杀虫剂的24h死亡率;采用半数致死浓度(LC50)法测定淡色库蚊幼虫对8种杀虫剂的LC50。结果依据区分剂量抗性评价标准,安康市淡色库蚊对DDT、敌敌畏、氯菊酯、溴氰菊酯均属抗性群体。LC50测定结果显示,安康市淡色库蚊对DDT、敌敌畏、氯菊酯、氯氰菊酯、高效氯氰菊酯、溴氰菊酯、双硫磷、残杀威的LC50分别为0.58110、0.40 039、0.02 345、0.01 088、0.0 049、0.00 559、0.00 277、0.23 460mg/L,与实验室敏感试虫比较,安康市淡色库蚊各药物的抗药性均高过敏感试虫,抗性在2.49～14.33倍之间,其中以溴氰菊酯相差最大(14.33倍)。抗性等级溴氰菊酯为中抗,其余药物为低抗。结论蚊虫抗药性的产生与长期、大量、乱用杀虫剂密切相关,在蚊虫防制中要定期开展抗药性监测,科学合理用药,提倡综合防制,以减缓蚊虫抗药性的产生。     

报告5个细胞色素P450cDNA新序列

细胞色素Ｐ４５０（以下简称“Ｐ４５０”或“ＣＹＰ”）是生物体内参与各类外源性和内源性化合物代谢的解毒酶系的主要成员，其与疾病，包括肿瘤的发生密切相关。大量研究表明，Ｐ４５０在昆虫抗药性中起重要作用。近年来，随着分子生物学及其技术的发展，克隆昆虫Ｐ４５０基因、研究其系统进化以及与抗药性的关系已越来越引起重视。本文采用反转录－聚合酶链反应（ＲＴ－ＰＣＲ），从淡色库蚊对溴氰菊酯敏感品系和抗性品系克隆Ｐ４５０ｃＤＮＡ片段，并进行序列分析。１　材料和方法供试蚊虫：淡色库蚊敏感品系引自中国科学院上海昆虫研究…     

用荧光半定量RT-PCR检测蚊溴氰菊酯抗性

目的:建立蚊对菊酯类杀虫剂抗性的PCR检测方法。方法:应用荧光半定量RT鄄PCR,检测经SSH结合cDNA芯片分离鉴定的淡色库蚊对溴氰菊酯抗性相关基因NYD鄄Tr在抗性品系与敏感品系中的表达水平。结果:经荧光半定量RT鄄PCR检测,NYD鄄Tr进入指数期的循环数抗性品系早于敏感品系,抗性品系组比敏感品系组先进入指数增长期。结论:以NYD鄄Tr作为靶基因,荧光半定量RT鄄PCR可区分淡色库蚊对溴氰菊酯抗性品系与敏感品系,亦即可检测淡色库蚊溴氰菊酯抗性。     

IRE-BP 1基因在三种淡色库蚊体内表达量的比较分析

目的进行不同品系淡色库蚊铁离子应答元件结合蛋白1基因表达量的分析。方法据二维电泳获得肽段序列设计引物扩增基因片段,荧光定量PCR检测在淡色库蚊抗性品系、敏感品系、现场采集品系蚊体内的表达水平差异。结果成功扩增淡色库蚊铁离子应答元件结合蛋白1基因片段,荧光定量PCR表明该基因在抗性品系蚊体内的表达量是敏感品系的8.22倍,现场品系是敏感品系的5.17倍。结论淡色库蚊铁离子应答元件结合蛋白1基因可做为新的抗性检测及治理基因靶标。     

三种抗性品系淡色库蚊对五种杀虫剂的交互抗性

目的了解淡色库蚊对化学杀虫剂的交互抗性,为合理有效地进行蚊虫化学防治提供依据。方法采用WHO生物测定方法测定3种抗性品系淡色库蚊对5种杀虫剂的抗性。结果DDVP抗性品系淡色库蚊抗性水平为8．38倍,对氯氰菊酯、三氯杀虫酯、残杀威和溴氰菊酯的抗性分别为52．50倍、7．61倍、4．74倍和0．75倍;残杀威抗性品系淡色库蚊抗性水平为11．34倍,对氯氰菊酯、DDVP、三氯杀虫酯和溴氰菊酯的抗性分别为8．08倍、2．85倍、2．00倍和1．80倍;氯氰菊酯抗性品系淡色库蚊抗性水平为243．00倍,对溴氰菊酯、三氯杀虫酯、残杀威和DDVP的抗性分别为28．90倍、17．28倍、1．49倍和1．38倍。结论蚊虫对某种杀虫剂产生抗性后,可能对其它杀虫剂也产生不同的交互抗性,用药前应作抗性测定,注意选择药物品种和确定使用剂量。     

2017年石家庄市乙脑高发区赵县淡色库蚊抗药性调查

目的 了解石家庄市乙脑高发区赵县淡色库蚊对常用杀虫剂的抗药性水平,为合理选择杀虫剂防控蚊媒传染病提供依据.方法 幼虫采用浸渍法,测定不同浓度杀虫剂下淡色库蚊的死亡率,计算半数致死浓度(LC50)和抗性倍数RR(抗性品系蚊虫的LC50/敏感品系蚊虫的LC50);成虫采用接触筒法测定不同浓度杀虫剂下淡色库蚊的死亡率.结果 ...     

微板法检测蚊虫体内非特异性酯酶活性研究

目的 探讨蚊虫抗药性敏感测试方法,方法 采用微板法,对室内常规饲养的敏感品系和室内选育的DDVP、抗残杀威品系淡色库蚊非特异性酯酶的活性进行了测定。结果 敏感品系蚊虫OD值≥0.9的占17.16％(35/204条);<0.9的占82.84％(169/204条);抗DDVP品系OD值≥0.9的占83.33％(200/240条);<0.9的占16.67％(40/240条);抗残杀威品系≥0.9的占74.89％(176/235条),<0.9的占25.11％(59/235条)。结论 敏感品系与抗性品系淡色库蚊的平均OD值存在较大差异。     

唐山、安新两地蚊虫抗药性调查

本文对唐山,安新两地蚊虫抗药性进行了调查。结果表明:唐山市的中华按蚊对二氯苯醚菊酯、溴氰菊酯;淡色库蚊对二氯苯醚菊酯、溴氰菊酯、DDT等药剂都已产生了较高的抗性,安新县的中华按蚊对二氯苯醚菊酯,淡色库蚊对二氯苯醚菊酯、DDT、DDVP都产生了较高抗性。唐山市的淡色库蚊对DDVP,安新县的淡色库蚊对溴氰菊酯的抗性都还处于初抗阶段。     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Dr.Zhang Ren''''s Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

Luo Lingjie''''s Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.     

Survey and practice of reporting quality of randomized controlled clinical trials on traditional Chinese medicine

Evidence obtained from randomized controlled trials （RCTs） has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine （TCM） and results have shown that there is an urgent need for higher quality RCTs on TCM.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…