The role of IS6110 in micro- and macroevolution of Mycobacterium tuberculosis lineage 2

Publication date: Available online 11 July 2019Source: Molecular Phylogenetics and EvolutionAuthor(s): Egor Shitikov, Andrei Guliaev, Julia Bespyatykh, Maja Malakhova, Sergey Kolchenko, Georgy Smirnov, Mathias Merker, Stefan Niemann, Igor Mokrousov, Elena Ilina, Vadim GovorunAbstractThe insertion sequence 6110 (IS6110) is the most studied transposable element in the Mycobacterium tuberculosis complex species. The element plays a significant role in genome plasticity of this important human pathogen, but still many causes and consequences of its transposition have not been fully studied. Here, we analyzed insertion sites for 902 Mycobacterium tuberculosis lineage 2 strains using whole-genome sequencing data. In total, 17,972 insertions were found, corresponding to 827 independent positions in the genome of the reference strain H37Rv. To trace the history of IS6110 expansion since proto-Beijing strains up to modern sublineages, we looked at the distribution of IS6110 across the genome-wide SNP-based phylogenetic tree. This analysis demonstrated a stepwise transposition of IS6110 that occurs by «copy-and-paste» mechanism. Additionally, we detected evolutionary-scale and sublineage-specific integration sites, which can be used for typing and for understanding the reasons for the success of the lineage. A significant part of such insertions affected the genes that are essential for the pathogen. Finally, we identified and confirmed deletions that occurred between diffe...
Source: Molecular Phylogenetics and Evolution - Category: Molecular Biology Source Type: research

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Publication date: Available online 12 October 2019Source: Revista Española de Medicina Nuclear e Imagen Molecular (English Edition)Author(s): Q. Xu, M. Lv, Y. Xia, Y. Zhao, W. Zhang, Y. ChenAbstractA 42-year-old woman presented with a ten-day history of dysphagia, slight chest pain and occasional vomiting. With the performance of thoracic and abdominal enhanced computed tomography (CT) and upper gastrointestinal contrast, once esophageal cancer was suspected. Significant activity mass in esophagus and mediastinal lymph nodes could be found on the imaging of 18F-FDG PET/CT, which also supported malignancy. However, T...
Source: Revista Espanola de Medicina Nuclear e Imagen Molecular - Category: Nuclear Medicine Source Type: research
AbstractPulmonary thromboembolism (PTE) is an acute and severe disease with high mortality, which is prone to be misdiagnosed or ignored especially when complicated with tuberculosis  (TB). Even though TB has been considered as a risk factor for PTE, there is rare report of TB with PTE worldwide. Which TB patients are more susceptible to PTE is still not clear. Here, we described a case report of PTE with pulmonary TB in a 28-year-old man, who had no risk factors for pulmonary thrombosis at admission and developed a medium-high PTE after initiating anti-TB therapy. After local thrombolysis with interventional the...
Source: Journal of Thrombosis and Thrombolysis - Category: Hematology Source Type: research
CONCLUSIONS: The findings indicated that miR-708-5p level was upregulated in macrophages after M.tb infection. And miR-708-5p could regulate mycobacterial vitality and inflammatory response to M.tb infection in human macrophages by targeting TLR4. PMID: 31599428 [PubMed - in process]
Source: European Review for Medical and Pharmacological Sciences - Category: Drugs & Pharmacology Tags: Eur Rev Med Pharmacol Sci Source Type: research
[The Herald] French President Emmanuel Macron reserved rare praise for Zimbabwe for its deepened fight against HIV, tuberculosis (TB) and malaria.
Source: AllAfrica News: Health and Medicine - Category: African Health Source Type: news
The objective of the study was to develop and optimize a simple, sensitive, and reliable high-performance liquid chromatography (HPLC) method for the simultaneous determination of isoniazid (INH), pyrazinamide (PZA), and rifampin (RIF) levels in human plasma. Nicotinamide was used as the internal standard and the samples were prepared after protein precipitation using acetonitrile and zinc sulfate. The separation was achieved using a C18 reversed-phase applying gradient elution. The mobile phase was a combination of water–methanol solution with a ratio of 95:05 (v/v) at the initial phase. All calibration curves had g...
Source: Iranian Journal of Pharmaceutical Research - Category: Drugs & Pharmacology Source Type: research
Source: International Journal of Tuberculosis and Lung Disease - Category: Respiratory Medicine Authors: Tags: ORIGINAL ARTICLES Source Type: research
Source: International Journal of Tuberculosis and Lung Disease - Category: Respiratory Medicine Authors: Tags: ORIGINAL ARTICLES Source Type: research
Source: International Journal of Tuberculosis and Lung Disease - Category: Respiratory Medicine Authors: Tags: ORIGINAL ARTICLES Source Type: research
Source: International Journal of Tuberculosis and Lung Disease - Category: Respiratory Medicine Authors: Tags: ORIGINAL ARTICLES Source Type: research
Source: International Journal of Tuberculosis and Lung Disease - Category: Respiratory Medicine Authors: Tags: ORIGINAL ARTICLES Source Type: research
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