نتایج جستجو برای: time nasba
تعداد نتایج: 1891542 فیلتر نتایج به سال:
BACKGROUND The Leishmania OligoC-TesT and NASBA-Oligochromatography (OC) were recently developed for simplified and standardised molecular detection of Leishmania parasites in clinical specimens. We here present the phase II evaluation of both tests for diagnosis of visceral leishmaniasis (VL), cutaneous leishmaniasis (CL) and post kala-azar dermal leishmaniasis (PKDL) in Sudan. METHODOLOGY T...
We have developed a hepatitis B virus (HBV) DNA detection and quantification system based on amplification with nucleic acid sequence-based amplification (NASBA) technology and real-time detection with molecular beacon technology. NASBA is normally applied to amplify single-stranded target RNA, producing RNA amplicons. In this work we show that with modifications like primer design, sample extr...
This paper describes the molecular detection of influenza A, influenza B, respiratory syncytial virus and human metapneumovirus using real-time nucleic acid sequence based amplification (NASBA) from respiratory samples collected on simple dry cotton swabs, non-invasively and in the absence of transport medium. Viral RNA was detectable on dry cotton and flocked swabs for at least 2 weeks at room...
چکیده طی دو دهه اخیر روشهای تشخیص hiv نقش مهمی را در حفظ سلامت در جهان ایفا کرده اند. روشهای مولکولی با حساسیت بالا نیز که اخیرا توسعه یافته اند قادرند عفونت را در مراحل بسیار ابتدایی نیز تشخیص دهند ؛ اما بسیاری از این تکنولوژی ها در کشور های در حال توسعه به دلایل اقتصادی قابل اجرا نیستند ؛ ولی چنانچه از هزینه های مربوط به این روشها کاسته شود استفاده از انها میسر می شود . با شروع عفونت hiv-...
DNA products generated from a region of the measles virus genome by three RNA reverse transcription and amplification methods were cloned and sequenced, and the results were compared in order to evaluate the methods' relative fidelities. The methods were: (i) reverse transcription followed by a nested polymerase chain reaction (RT-nPCR), (ii) a combined RT-PCR using rTth polymerase and (iii) nu...
A nucleic acid sequence-based amplification (NASBA) technique for the detection of hepatitis A virus (HAV) in foods was developed and compared to the traditional reverse transcription (RT)-PCR technique. Oligonucleotide primers targeting the VP1 and VP2 genes encoding the major HAV capsid proteins were used for the amplification of viral RNA in an isothermal process resulting in the accumulatio...
Viral myocarditis is a moderate disease, but it sometimes causes progressive cardiac disorder. Many different viruses have been considered as the agent of viral myocarditis, but Coxsackievirus of the B group, in particular of the Coxsackievirus B3 (CVB3), is more than fifty percent of cases of viral myocarditis. CVB3 is a positive single-stranded RNA virus and a member of the genus Enterovirus ...
An important analytical control in molecular amplification-based methods is an internal amplification control (IAC), which should be included in each reaction mixture. An IAC is a nontarget nucleic acid sequence which is coamplified simultaneously with the target sequence. With negative results for the target nucleic acid, the absence of an IAC signal indicates that amplification has failed. A ...
OBJECTIVE To estimate the sensitivity and specificity of the OligoC-TesT and nucleic acid sequence-based amplification coupled to oligochromatography (NASBA-OC) for molecular detection of Leishmania in blood from patients with confirmed visceral leishmaniasis (VL) and healthy endemic controls from Kenya. METHODS Blood specimens of 84 patients with confirmed VL and 98 endemic healthy controls ...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید