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6 rs5743808 in exon and among MDR-TB isolates from patients with pulmonary MDR-TB of severe and moderate/mild degree.
We concluded that SNPs in TLR-1, TLR-2, and TLR-6 of pulmonary MDR-TB patients was found to have an association with disease severity. TLRs polymorphism had significant association was present in TLR-1 rs5743572 in intron, TLR-2 rs3804100 in exon, and TLR-6 rs5743808 in exon and among MDR-TB isolates from patients with pulmonary MDR-TB of severe and moderate/mild degree.
Tuberculosis and malaria (TB/MP) co-infection generates severe pathology that affects the levels of cytokines and hemostatic parameters than either disease. Anti-TB treatment regimen involves phases of different drug cocktails that may additionally modulate the levels of inflammatory cytokines and hemostatic parameters. This study investigated the variations in the levels of hemostatic and inflammatory markers when compared between TB patients with and without malaria at pretreatment, intensive, and continuation phase treatment.
In this cross-sectional study, 180 patients were recruited comprising; 35 TB-only and 25 TB/malaria patients at pretreatment, 36 TB-only and 24 TB/malaria patients at intensive phase treatment, and 27 TB-only and 33 TB/malaria patients at continuation phase therapy. P-selectin (P-SEL), platelet-activating factor (PAF), platelet factor-4, GP IIb/IIIa complex, tumor necrosis factor-alpha (TNF-α), interleukin (IL)-10, IL-6, IL-2, transforming growth factor (TGF)-β, and thrombopoietinarkers between TB patients co-infected with malaria and nonmalaria-infected TB patients vary with anti-TB treatment.
Heteroresistance is the coexistence of susceptible and resistant strains in the same individual, considered the preliminary step for total resistance, and can stem from mixed infection or clonal heterogeneity. The aim of this study was to evaluate the heteroresistance of Mycobacterium tuberculosis to rifampicin and isoniazid and its characterization.
GenoType MTBDRplus
; Sanger sequencing of the rpoB, katG, and inhA genes; and Mycobacterial Interspersed Repetitive Unit - Variable Number Tandem Repeat (MIRU-VNTR) were performed.
In a total of 654 isolates, 530 were resistant, 124 were susceptible, and 29 were heteroresistant to a first-line drug. GenoType MTBDRplus
detected heteroresistance in the rpoB gene in 26/29 (89.6%), as compared to 5/29 (17.2%) in the katG gene and 2/29 (6.8%) in the inhA gene. Four isolates showed heteroresistance in these genes. The Sanger sequencing detected heteroresistance in the rpoB gene in 7/29 (24.1%), as compared to 3/29 (10.3%) in the katG gene. this website In one isolate, heteroresistance was concomitant in both the rpoB and katG genes. MIRU-VNTR detected mixed infection in three heteroresistant isolates, while four isolates showed clonal heterogeneity.
GenoType MTBDRplus
detected more cases of heteroresistance when compared to sequencing. It was also possible to characterize mixed infection and clonal heterogeneity by MIRU-VNTR.
GenoType MTBDRplus® detected more cases of heteroresistance when compared to sequencing. It was also possible to characterize mixed infection and clonal heterogeneity by MIRU-VNTR.
There are few studies investigating the prevalence of latent tuberculosis infection (LTBI) in HIV-1-infected children on antiretroviral therapy (ART), but no data from Nigeria. This study determined the prevalence of LTBI in HIV-1-infected children on ART in our clinic. Knowing the prevalence and thus the burden of LTBI could help improve HIV care by enabling targeted isoniazid (INH) prophylaxis.
This observational study was carried out from September 2016 to August 2017 at the pediatric HIV clinic of the Jos University Teaching Hospital among HIV-1-infected children on ART, aged 6 months-15 years. LTBI was diagnosed using an interferon-gamma release assay, the ELISpot test, T-SPOT®.TB assay (Oxford Immunotec, Abingdon, UK) on freshly collected whole blood samples within 2 h. Children with a positive test were treated with INH after first excluding TB by chest X-ray and clinical evaluation.
Of the 90 children studied, 4 (4.4%) had LTBI diagnosed by ELISpot. Their median interquartile range (IQR) age was 10.4 years (7.9-12.5), the majority were male (54.4%) and most of them had originally received Bacille Calmette-Guérin (83/89, 93.3%). They had a median CD4 count of 694 cells/μL (472-1045). The median (IQR) CD4 count was higher in LTBI compared to non-LTBI children 1286 cells/μL (953-1375) versus 683 cells/μL (465-1040), (P = 0.044).
Although this study showed a very low prevalence of LTBI in our setting, it was still beneficial to the few children on ART identified with LTBI as it enabled treatment with INH. A larger study will be required to ascertain the actual burden of LTBI in such children in our setting.
Although this study showed a very low prevalence of LTBI in our setting, it was still beneficial to the few children on ART identified with LTBI as it enabled treatment with INH. A larger study will be required to ascertain the actual burden of LTBI in such children in our setting.Over the last 30 years, there have been at least 17 published reports of nontuberculous mycobacteria (NTMs) being isolated from hospital ice or ice-making machines. Of these, 12 were reports of pseudo-outbreaks, i.e., the nosocomial transmission of organism from hospital ice/ice machines to patients, resulting in patient colonization, but with no disease manifestations. In addition, there were five outbreaks that resulted in clinical disease/pathology associated with NTM organism. Eleven different species of NTMs have been associated with these reports, where over half (59%) of the species identified were Mycobacterium fortuitum (18%), Mycobacterium gordonae (14%), Mycobacterium mucogenicum (14%), and Mycobacterium porcinum (14%). Several of these reports clearly documented that ice machines had been properly maintained, cleaned, and serviced in accordance with the CDC guidelines yet became contaminated with NTM organisms. These reports frequently detail that after extensive cleaning/disinfection following the discovery of NTM organisms, ice machines remained contaminated with NTM organisms, highlighting the difficulty in eradicating these from ice machines, once contaminated.
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