نتایج جستجو برای: روش nasba
تعداد نتایج: 369774 فیلتر نتایج به سال:
Real-time nucleic acid sequence-based amplification (NASBA) using molecular beacon technology (NASBA-beacon) was compared to standard NASBA with postamplification hybridization using electrochemiluminescently labeled probes (NASBA-ECL) for detection of enteroviruses (EV) in 133 cerebrospinal fluid and 27 stool samples. NASBA-ECL and NASBA-beacon were similar in sensitivity, detecting 55 (100%) ...
A study was conducted to evaluate the performance of a nucleic acid sequence-based amplification (NASBA) assay for the detection of foot-and-mouth disease virus (FMDV). Two detection methods: NASBA-electrochemiluminescence (NASBA-ECL) and a newly developed NASBA-enzyme-linked oligonucleotide capture (NASBA-EOC) were evaluated. The diagnostic sensitivity of these assays was compared with other l...
We attempted to apply fluorescence resonance energy transfer technology to nucleic acid sequence-based amplification (FRET-NASBA) on the platform of the LightCycler system to detect Aspergillus species. Primers and probes for the Aspergillus 18S rRNA were newly designed to avoid overlapping with homologous sequences of human 18s rRNA. NASBA using molecular beacon (MB) showed non-specific result...
Nucleic acid sequence-based amplification (NASBA) was used for detection of the human cytomegalovirus (CMV) immediate early-1 (IE) and the late pp67 mRNA in 353 blood samples collected from 34 liver transplant patients. The diagnostic value of these assays was compared to that of the pp65 antigenemia assay. Overall, 95 and 42% of the antigenemia-positive samples were IE NASBA and pp67 NASBA pos...
زمینه و هدف: توکسوپلاسموزیس یکی از بیماری های مهم انگلی می باشد که عوارض غیر قابل جبران در نوزادان به دنیا آمده از مادرانی که در طی دوران بارداری آلوده شده اند و افراد ایمنوساپرس بوجود می آورد. روش های درمانی مشخصی برای توکسوپلاسموزیس ارائه شده است؛ اما آسیب های جنینی بوجود می آورد. بنابراین امروزه استفاده از ماکرولید اسپیرامایسین به عنوان یکی از گزینه های درمانی مورد استفاده قرار می گیرد. مطال...
Monitoring the response to therapy for invasive aspergillosis (IA) is essential for the management of patients with hematologic diseases. We evaluated the correlation between the outcome of real-time nucleic acid sequence-based amplification (RTi-NASBA) for Aspergillus 18S rRNA and the clinical outcome of IA. A total of 157 serum samples from 29 patients with IA were tested for RTi-NASBA. The t...
The diagnostic value of monitoring human cytomegalovirus (HCMV) late pp67 mRNA expression by nucleic acid sequence-based amplification (NASBA) after renal-allograft transplantation was evaluated. RNAs were isolated from 489 whole-blood specimens of 42 patients for the specific amplification of the late pp67 (UL65) mRNA. NASBA results were compared to results from the pp65 antigenemia assay, vir...
چکید ه سابقه و هدف با شروع عفونت HIV-1 ، اولین مارکری که در خون آشکار میشود، RNA ویروسی میباشد. از میان روشهای موجود که شناسایی RNA را هدف قرار میدهند؛ متداولترین روشها NASBA و RT-PCR هستند. NASBA مزیتهای متعددی نسبت به RT-PCR ارایه میکند. در این پژوهش، واکنش NASBA در ترکیب با روش آشکارسازی آسان و حساس الایزا، برای تشخیص و آشکارسازی HIV-1 RNA مورد استفاده قرار گرفت. مواد و روشه...
Isothermal nucleic acid sequence-based amplification (NASBA) was applied to the detection of Chlamydophila pneumoniae 16S rRNA by using the NucliSens basic kit (bioMérieux, Boxtel, The Netherlands). The assay was originally developed as a conventional NASBA assay with electrochemiluminescence detection and was subsequently adapted to a real-time NASBA format by using a molecular beacon. C. pneu...
Real-time isothermal nucleic acid sequence-based amplification (RT-NASBA) was applied to the detection of Mycoplasma pneumoniae. In vitro-generated M. pneumoniae RNA was used to assess the sensitivity of the assay. The 95% hit rate was 148 molecules of M. pneumoniae RNA in the amplification and 10(4) molecules of in vitro-generated RNA after nucleic acid extraction. The sensitivity of the RT-NA...
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