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《Journal of clinical virology》2014,59(3):204-207
BackgroundNumerous studies have analyzed the effects of raltegravir intensification on HIV-1 viral replication in infected individuals receiving suppressive combined antiretroviral treatment (cART). Nevertheless, there are only two studies on the effect of raltegravir in HTLV-1 infection, and none in HTLV-2.ObjectiveTo study the effect of raltegravir on HTLV-2 infection in HIV-1-co-infected individuals.Study designThis retrospective longitudinal study included four HTLV-2-HIV-1-co-infected individuals who received raltegravir-based cART during 48 weeks and 11 HTLV-2-HIV-1-co-infected individuals under cART without raltegravir during 48 weeks. HTLV-2 proviral load, CD4 and CD8 count and frequency were analyzed.ResultsHTLV-2 proviral load significantly increased at week 24 compared to baseline among all the patients who received raltegravir (p = 0.003), while no significant increases were found in the control group. No significant variation in either CD8 or CD4 counts was found during the follow up in both groups.ConclusionsRaltegravir induced a transient increment on total HTLV-2 DNA proviral load in HTLV-2/HIV-1-coinfected individuals on suppressive cART after 24 weeks. 相似文献
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《Journal of clinical virology》2014,59(3):177-183
BackgroundDiverse viruses often reactivate in or infect cancer patients, patients with immunocompromising infections or genetic conditions, and transplant recipients undergoing immunosuppressive therapy. These infections can disseminate, leading to death, transplant rejection, and other severe outcomes.ObjectivesTo develop and characterize an assay capable of inclusive and accurate identification of diverse potentially disseminating viruses directly from plasma specimens.Study designWe developed a PCR/electrospray ionization mass spectrometry (PCR/ESI-MS) assay designed to simultaneously detect and identify adenovirus, enterovirus, polyomaviruses JC and BK, parvovirus B19, HSV-1, HSV-2, VZV, EBV, CMV, and herpesviruses 6–8 in plasma specimens. The assay performance was characterized analytically, and the results from clinical plasma samples were compared to the results obtained from single-analyte real time PCR tests currently used in clinical practice.ResultsThe assay demonstrated sensitivity and specificity to diverse strains of the targeted viral families and robustness to interfering substances and potentially cross reacting organisms. The assay yielded 94% sensitivity when testing clinical plasma samples previously identified as positive using standard-of-care real-time PCR tests for a single target virus (available samples included positive samples for 11 viruses targeted by the assay).ConclusionsThe assay functioned as designed, providing simultaneous broad-spectrum detection and identification of diverse agents of disseminated viral infection. Among 156 clinical samples tested, 37 detections were made in addition to the detections matching the initial clinical positive results. 相似文献
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China’s tuberculosis (TB) burden is second only to that of India worldwide. In Chongqing, the largest municipality in southwestern China, although the prevalence of both TB and drug-resistant TB is higher than in other municipalities, the molecular characteristics and drug susceptibility phenotypes are poorly known. In this study, 297 Mycobacterium tuberculosis isolates from Chongqing were genotyped with spacer oligonucleotide typing (spoligotyping) and 28-locus MIRU-VNTR (24-locus MIRU-VNTR scheme and 4 other loci). Spoligotyping results were compared with drug-resistant profiles. Patients who showed clustering by both spoligotyping and 28-locus MIRU-VNTR were interviewed to investigate their detailed contact history. Our data demonstrated that the Beijing genotype was the most prevalent genotype, and ST1 was the most predominant lineage in Chongqing. The Beijing genotype was significantly associated with ethambutol resistance and multidrug-resistant phenotypes. A combination of the 10 most polymorphic loci permitted to achieve higher discriminatory power than 24-VNTR. In addition, a presumed transmission pathway was observed in a cluster of patients with the same MIRU-VNTR profile. The 10-VNTR locus set is suitable for genotyping of Mycobacterium tuberculosis in Chongqing. 相似文献
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《Genetics in medicine》2022,24(11):2380-2388
PurposeHealth care professionals are expected to take on an active role in the implementation of risk-based cancer prevention strategies. This study aimed to explore health care professionals’ (1) self-reported familiarity with the concept of polygenic risk score (PRS), (2) perceived level of knowledge regarding risk-stratified breast cancer (BC) screening, and (3) preferences for continuing professional development.MethodsA cross-sectional survey was conducted using a bilingual—English/French—online questionnaire disseminated by health care professional associations across Canada between November 2020 and May 2021.ResultsA total of 593 professionals completed more than 2 items and 453 responded to all questions. A total of 432 (94%) participants were female, 103 (22%) were physicians, and 323 (70%) were nurses. Participants reported to be unfamiliar with (20%), very unfamiliar (32%) with, or did not know (41%) the concept of PRS. Most participants reported not having enough knowledge about risk-stratified BC screening (61%) and that they would require more training (77%). Online courses and webinar conferences were the preferred continuing professional development modalities.ConclusionThe study indicates that health care professionals are currently not familiar with the concept of PRS or a risk-stratified approach for BC screening. Online information and training seem to be an essential knowledge transfer modality. 相似文献
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