Abstract:
:Despite the high virological response rates achieved with current directly acting antiviral agents (DAAs) against hepatitis C virus (HCV), around 2% to 5% of treated patients do not achieve a sustained viral response. The identification of amino acid substitutions associated with treatment failure requires analytical designs, such as subtype-specific ultradeep sequencing (UDS) methods, for HCV characterization and patient management. Using this procedure, we have identified six highly represented amino acid substitutions (HRSs) in NS5A and NS5B of HCV, which are not bona fide resistance-associated substitutions (RAS), from 220 patients who failed therapy. They were present frequently in basal and posttreatment virus of patients who failed different DAA-based therapies. Contrary to several RAS, HRSs belong to the acceptable subset of substitutions according to the PAM250 replacement matrix. Their mutant frequency, measured by the number of deep sequencing reads within the HCV quasispecies that encode the relevant substitutions, ranged between 90% and 100% in most cases. They also have limited predicted disruptive effects on the three-dimensional structures of the proteins harboring them. Possible mechanisms of HRS origin and dominance, as well as their potential predictive value for treatment response, are discussed.
journal_name
J Clin Microbioljournal_title
Journal of clinical microbiologyauthors
Soria ME,García-Crespo C,Martínez-González B,Vázquez-Sirvent L,Lobo-Vega R,de Ávila AI,Gallego I,Chen Q,García-Cehic D,Llorens-Revull M,Briones C,Gómez J,Ferrer-Orta C,Verdaguer N,Gregori J,Rodríguez-Frías F,Buti M,Estedoi
10.1128/JCM.01985-20subject
Has Abstractpub_date
2020-11-18 00:00:00issue
12eissn
0095-1137issn
1098-660Xpii
JCM.01985-20journal_volume
58pub_type
杂志文章abstract::Two cases of primary invasive cutaneous infections caused by the zoophilic dermatophytic species Microsporum canis are presented. The first case occurred in a liver transplant recipient who was receiving immunosuppressive therapy. Multiple erythematous papules were seen on both legs, and a biopsy revealed invasive fun...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.2.460-462.1996
更新日期:1996-02-01 00:00:00
abstract::We describe two cases of Clostridium glycolicum wound infections in immunocompetent adults. The bacterium was identified by 16S rRNA gene sequencing. This is the third published report of the recovery of this organism from human clinical material and highlights the importance of the organism as a potential human patho...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章,评审
doi:10.1128/JCM.02411-08
更新日期:2009-05-01 00:00:00
abstract::An echovirus 3 (Echo3) strain (strain LR31G7) was isolated from a sewage treatment plant in Greece in 2005. Full-genome molecular, phylogenetic, and SimPlot analyses were conducted in order to reveal the evolutionary pathways of the isolate. Nucleotide and phylogenetic analyses of part of the VP1 genomic region reveal...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00475-09
更新日期:2010-05-01 00:00:00
abstract::To evaluate the risk of a nosocomial spread of Pneumocystis carinii f. sp. hominis (P. carinii hominis), air filter samples from rooms of P. carinii pneumonia (PCP) patients, adjacent corridors, and other hospital environments have been investigated for the presence of P. carinii hominis. Amplified DNA from air filter...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.36.6.1737-1740.1998
更新日期:1998-06-01 00:00:00
abstract::For testing bacterial susceptibility to PD131628, a 5-micrograms disk and the following tentative interpretive criteria may be used: > or = 19 mm for susceptible (MIC, < or = 1.0 micrograms/ml), 16 to 18 mm for intermediate (MIC, 2.0 micrograms/ml), and < or = 15 mm for resistant (MIC, > or = 4.0 micrograms/ml). For s...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.1.235-238.1995
更新日期:1995-01-01 00:00:00
abstract::A premarket trial of the Becton Dickinson Directigen respiratory syncytial virus membrane-based enzyme immunoassay compared the test with virus isolation for the detection of respiratory syncytial virus in 583 nasopharyngeal aspirates. After modification, the Directigen test showed a sensitivity of 83% and a specifici...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.28.6.1458-1459.1990
更新日期:1990-06-01 00:00:00
abstract::Capnocytophaga is a genus of gram-negative rods involved mainly in bacteremia in immunocompromised hosts. Here we report a case of Capnocytophaga peritonitis in a patient undergoing continuous ambulatory peritoneal dialysis. The disease appeared as a superinfection during antimicrobial therapy of a previous episode of...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.33.9.2471-2472.1995
更新日期:1995-09-01 00:00:00
abstract::High-resolution melt (HRM) analysis can identify sequence polymorphisms by comparing the melting curves of amplicons generated by real-time PCR amplification. We describe the application of this technique to identify Mycobacterium avium subspecies paratuberculosis types I, II, and III. The HRM approach was based on ty...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02484-09
更新日期:2010-04-01 00:00:00
abstract::Four independent molecular methods were used to characterize the Salmonella enterica subsp. enterica serovar choleraesuis live vaccine strains SC-54 and Suisaloral and to differentiate them from S. choleraesuis field isolates. Plasmid analysis revealed the presence of seven plasmid profiles. A virulence plasmid of 52-...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.10.2460-2463.1996
更新日期:1996-10-01 00:00:00
abstract::Clinical presentations for viral respiratory tract infections are often nonspecific, and a rapid, high-throughput laboratory technique that can detect a panel of common viral pathogens is clinically desirable. We evaluated two multiplex reverse transcription-PCR (RT-PCR) products coupled with microarray-based systems ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00210-07
更新日期:2007-07-01 00:00:00
abstract::In order to determine whether mixed infections of human herpesvirus 6B (HHV-6B) occur in immunocompetent and immunocompromised individuals, we examined the copy numbers of telomeric repeat sequences (TRS) of clinical isolates. In clinical isolates obtained from patients with exanthem subitum caused by primary HHV-6B i...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02192-13
更新日期:2014-02-01 00:00:00
abstract::Human adenoviruses (AdVs) typically cause mild illnesses in otherwise healthy hosts. We investigated a pediatric outbreak of acute respiratory infection with fatal outcomes that occurred in Lisbon, Portugal, in 2004. Biological specimens were collected from 83 children attending two nurseries, a kinesiotherapy clinic,...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02019-09
更新日期:2010-04-01 00:00:00
abstract::Detection of methicillin (meticillin)-resistant Staphylococcus aureus colonization was assessed using combined nose and groin swabs in two commercial PCR assays (the Xpert MRSA assay and the BD GeneOhm MRSA assay). Compared to routine culture, both had similar sensitivities (87.0% versus 84.8%, respectively) and speci...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00303-09
更新日期:2009-11-01 00:00:00
abstract::The use of rapid-cycle PCR combined with colorimetric microwell hybridization for detecting Bordetella pertussis was investigated. Rapid cycling was performed with an air thermocycler (model 1605; Idaho Technology, Idaho Falls, Idaho). Although the instrument was originally designed to be used with capillary tubes, an...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.34.6.1355-1358.1996
更新日期:1996-06-01 00:00:00
abstract::The aim of this study was to find a reliable method for the detection and identification of fungi in fungus balls of the maxillary sinus and to evaluate the spectrum of fungi in these samples. One hundred twelve samples were obtained from patients with histologically proven fungal infections; 81 samples were paraffin-...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.2.581-585.2003
更新日期:2003-02-01 00:00:00
abstract::Whole-genome sequencing (WGS) of Staphylococcus aureus is increasingly used as part of infection prevention practices. In this study, we established a long-read technology-based WGS screening program of all first-episode methicillin-resistant Staphylococcus aureus (MRSA) blood infections at a major urban hospital. A s...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.01261-19
更新日期:2019-11-22 00:00:00
abstract::Chromosomal DNAs of selected Bacteroides organisms whose relatedness had been previously determined by "conventional" filter-annealing studies (J. L. Johnson, Int. J. Syst. Bacteriol. 28:245, 1978) were further analyzed by restriction endonuclease analysis coupled with the Southern hybridization procedure (E. M. South...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.21.1.24-28.1985
更新日期:1985-01-01 00:00:00
abstract::A procedure was developed for characterization of Chlamydia trachomatis strains by using restriction endonuclease analysis of amplified genes of the major outer membrane protein (MOMP). Reference strains of the 15 serovars (A through K and L1 through L3) and clinical isolates were tested. The nucleotide sequences of t...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.29.6.1132-1136.1991
更新日期:1991-06-01 00:00:00
abstract::A cytochrome b (cytb) gene quantitative PCR (qPCR) assay was developed to diagnose malaria in travelers. First, manual and automated DNA extractions were compared and automated DNA extraction of 400 μl of blood was found to be more efficient. Sensitivity was estimated using the WHO international standard for Plasmodiu...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02156-10
更新日期:2011-06-01 00:00:00
abstract::Nineteen multidrug-resistant (MDR) Mycobacterium complex strains isolated in a nosocomial outbreak were characterized at the molecular level. The strains were microbiologically characterized as Mycobacterium bovis. The mpt40 sequence was not present in chromosomal DNA from these strains, supporting the fact that they ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.35.6.1390-1393.1997
更新日期:1997-06-01 00:00:00
abstract::A cross-sectional study of nasopharyngeal colonization with Streptococcus pneumoniae was performed among 573 children attending 29 day-care centers (DCCs) in Norway prior to the start of mass vaccination with the heptavalent pneumococcal conjugate vaccine (PCV-7). A sensitive sampling method was employed, including tr...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02296-07
更新日期:2008-08-01 00:00:00
abstract::Autopsy specimens of lung tissues from 15 patients that contracted legionellosis during the 1976 Philadelphia outbreak of Legionnaires disease were examined for the presence of Legionella organisms and soluble antigens by indirect fluorescent-antibody (IFA) testing and by an enzyme-linked immunosorbent assay (ELISA) w...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.21.1.15-19.1985
更新日期:1985-01-01 00:00:00
abstract::Herpes simplex virus (HSV) infections are very common in the general population and among immunocompromised patients. Acyclovir (ACV) is an effective treatment which is widely used. We deemed it essential to conduct a wide and coordinated survey of the emergence of ACV-resistant HSV strains. We have formed a network o...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.42.1.242-249.2004
更新日期:2004-01-01 00:00:00
abstract::Of 12,321 stool samples analyzed over a 6-year interval, 870 (7.1%) were positive for a total of 1,019 parasites, of which 1,011 (99.2%) were found in trichrome-stained smears of unconcentrated specimens while only 479 (47.0%) were detected in iodine-stained smears of concentrated samples. Stool specimens were next an...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.37.3.835-837.1999
更新日期:1999-03-01 00:00:00
abstract::In the treatment of serious bacterial infections, the rapid institution of appropriate antimicrobial chemotherapy may be lifesaving. Choosing the correct antibiotic or combination of antibiotics is becoming very important, as multidrug resistance is found in many pathogens. Using a collection of 75 well-characterized ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.02380-08
更新日期:2009-05-01 00:00:00
abstract::Clinical and experimental observations suggest that immune globulin may prevent otitis media (OM) in children. We performed experiments in chinchillas to test the hypothesis that human bacterial polysaccharide immune globulin (BPIG) might prevent OM caused by Streptococcus pneumoniae. Animals were given BPIG or saline...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.26.4.755-759.1988
更新日期:1988-04-01 00:00:00
abstract::A total of 186 volunteers, including 40 hospital patients, participated in a cross-sectional survey of oropharyngeal colonization with Legionella pneumophila. Colonization was defined as the appearance of any L. pneumophila organisms on culture or a positive direct fluorescent-antibody (FA) test or both in the absence...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.18.5.1108-1112.1983
更新日期:1983-11-01 00:00:00
abstract::Bacteriological culture and real-time PCR (RT-PCR) were used to detect Campylobacter jejuni in fecal samples from a French cohort of 237 patients with Guillain-Barré syndrome (GBS). We provide evidence that diverse serotypes and genotypes of C. jejuni are a major trigger of GBS in France. ...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00381-10
更新日期:2010-06-01 00:00:00
abstract::Clinical arbovirus screening requires exclusion of a broad range of viruses with as few assays as possible. We present a reverse transcription-PCR (RT-PCR) for the detection of all species of the genus Alphavirus qualified for exclusion screening (limit of detection [LOD], 5 to 100 RNA copies per reaction across all A...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/JCM.00317-10
更新日期:2010-09-01 00:00:00
abstract::The sequences of mink astroviruses collected from 11 farms in Denmark and Sweden were analyzed and found to be homologous with one another but different from those of other astroviruses. A species-specific reverse transcriptase-PCR for mink astrovirus was established and shown to be suitable for the analysis of clinic...
journal_title:Journal of clinical microbiology
pub_type: 杂志文章
doi:10.1128/jcm.41.11.5192-5194.2003
更新日期:2003-11-01 00:00:00