PCR or Culture for Detection of Meningitis?

      Comments Off on PCR or Culture for Detection of Meningitis?

Boriskin Yu et al. The sample volume processed was 200 μl, and the elution buffer volume applied to the extraction column was 100 μl. The present study reveals a scarce presence of Enterovirus in the myocardium of patients with chronic myocardial disease. However, the wide range of viruses potentially responsible for CNS infections as well as their genetic characteristics, both DNA and RNA viruses, rendered rapid and large virological diagnosis difficult by using monoplex reverse transcription (RT)-PCR and PCR assays (4, 27). 680), analyseres prøven i hele pakken. Current classification of the over 100 HEV serotypes (http://www.picornaviridae.com) divides the members of HEV genera into four species (HEV-A, HEV-B, HEV-C, and HEV-D), based on genome organization, sequence similarity, and biological properties (23). When separately analyzed using CSF specimens, the positive and negative agreements between TMC-PCR and TTN-PCR were 100% and 54.79%, respectively.

Serotype identification in enterovirus positive samples was conducted by RT-PCR. Eighty-nine clinical specimens (70 from stools, 14 from throat swabs, 4 from CSF, and 1 from serum) from patients with suspected aseptic meningitis during the EV epidemics in South Korea from June to September 2008 were included in the protocol using CLP-modified primers. et al., 2003; Freeman H.R. This 185-page report provides detailed analyses of current and emerging molecular diagnostic technologies, and their potential market applications, including DNA sequencing, RNA probes, detection technologies, biochips, genosensors, microarrays, labs-on-the-chip, and other.The report also presents strategic assessments of current and emerging suppliers of molecular diagnostics products, including their sales, product portfolios, marketing tactics, technological know-how, new produ…… Commercial amplification test systems may present attractive alternatives to circumventing these problems. Enterovirus is a leading cause of aseptic meningitis in adults and children that occurs seasonally in the Midwest United States, generally in summer and fall. Infections due to EVs are often initially indistinguishable on clinical grounds from those due to bacterial pathogens (21), for which there is specific treatment, but the clinical course is usually self-limiting.


Reverse-transcription PCR diagnosis of enteroviral infections in children could reduce the length of hospitalization and result in significant health care cost savings. All of these were confirmed by a positive PCR for the respective virus in feces and/or throat. The reaction conditions were optimized for annealing temperature and MgCl2 and primer concentrations. They found that having a positive CSF enterovirus PCR result was associated with a 1.54-day decrease in the length of hospital stay and a 33.7 percent shorter duration of antibiotic use. PCR testing of the blood can only identify the virus in 30% of chronic fatigue syndrome/myalgic encephalomyelitis patients. NAT methods are now widely available (14); multicenter evaluations support the efficacy of in-house and commercially available enterovirus NAT methods (9, 15) and their improved sensitivity relative to that of viral culture (1, 17, 19, 24). Tests are based on RNA detection and contain the Internal Control which is used in the isolation process in order to control the RNA extraction of each sample and to identify possible reaction inhibition.

The HSV-2 viral load was significantly higher in primary than in recurrent meningitis and correlated with the degree of inflammation. Owing to the elimination of postamplification detection steps, its conduct required considerably less hands-on time and was associated with a substantially reduced carryover risk compared to previously described PCR-based enterovirus detection assays. Conventional culture was 51% sensitive and 100% specific. In addition, the enteroviruses are the most common cause of central nervous system (CNS) disease; they account for almost all viruses recovered in culture from spinal fluid. Collectively, enteroviruses are the most common cause of upper respiratory tract disease in children. Recently, bone marrow transplantation patients have been found to be infected with enteroviruses, resulting in serious complications such as pneumonia (6, 19). The number of enterovirus positive CSFs from each year were: 21 (2008), 7 (2011), 53 (2012), 58 (2013) and 31 (2014).

In addition, in Assay 2 reverse transcription and PCR wer eaccomplished within the same reaction tube. Among 194 patients included, 45 had and 149 did not have aseptic meningitis. Human enteroviruses are members of the family Picornaviridae, genus Enterovirus, and consist of more than 60 distinct serotypes. Both methods evaluated in this article can be used for detection of enterovirus in clinical specimens and these nucleic acid amplification methods are useful assays for the diagnosis of enteroviral infection. Positivity for EV RT-PCR was higher in CSF samples without RBCs than in samples with RBCs: 13(26%) and 36(9.2%), p = 0.001. Based on limiting dilutions, the TaqMantrade mark enterovirus and parechovirus RT-PCR showed an increase of two orders of magnitude compared to cell culture with sensitivity of 100% (7/7) when assessed using enterovirus cell culture positive samples (CSF, TS). The IC RNA contains the same primer binding sites as EV RNA but has a different probe region.

We aimed to establish the utility of the Fast-track diagnostics Viral meningitis multiplex PCR kit for the diagnosis of central nervous system infection in infants.