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https://www.readbyqxmd.com/read/28531994/a-facile-one-step-method-for-preparation-of-fe3o4-cs-inh-nanoparticles-as-a-targeted-drug-delivery-for-tuberculosis
#1
Chili Zhao, Xun Liu, Xia Zhang, Hong Yan, Zhilei Qian, Xinghui Li, Zhenye Ma, Qiaorong Han, Chonghua Pei
In this paper, Fe3O4/chitosan/isoniazid magnetic nanoparticles (Fe3O4/CS/INH-MNPs) were prepared as an environmental stimuli-responsive drug-delivery system by automated in situ click technology, in which Fe3O4 magnetic nanoparticles, chitosan and isoniazid were simultaneously in situ crystallized by one-step method. The Fe3O4 magnetic nanoparticles and tripolyphosphate act as stable crosslinkers to produce numerous intermolecular crosslinkages for the mobility of the chitosan chains. Characterization results indicated that the multifunctional drug delivery system with optimized size, excellent loading capacity, well magnetic properties, nontoxicity and pH triggered drug release property is expected to be applied in tuberculosis treatment with excellent magnetic sensitivity and sustained release...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531291/a-novel-virus-vectored-respiratory-mucosal-vaccine-enhances-anti-tuberculosis-immunity-in-a-humanized-model-system
#2
Yushi Yao, Rocky Lai, Sam Afkhami, Siamak Haddadi, Anna Zganiacz, Fatemeh Vahedi, Ali A Ashkar, Charu Kaushic, Mangalakumari Jeyanathan, Zhou Xing
Background: The translation of pre-clinically promising novel tuberculosis (TB) vaccines to ultimate human applications has met with the challenge of lacking markedly improved animal models for vaccine testing with an immune system of human equivalent in its genetic diversity and level of susceptibility to TB. Methods: We have developed a humanized mice (Hu-mice) TB model system to investigate the clinical relevance of a novel virus-vectored (VV) TB vaccine administered via respiratory mucosal (RM) or parenteral route...
May 20, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28531276/impact-of-vitamin-a-and-carotenoids-on-the-risk-of-tuberculosis-progression
#3
Omowunmi Aibana, Molly F Franke, Chuan-Chin Huang, Jerome T Galea, Roger Calderon, Zibiao Zhang, Mercedes C Becerra, Emily R Smith, Alayne G Ronnenberg, Carmen Contreras, Rosa Yataco, Leonid Lecca, Megan B Murray
Background: Low and deficient levels of vitamin A are common in low and middle income countries where tuberculosis (TB) burden is high. We assessed the impact of baseline levels of vitamins A and carotenoids on TB disease risk. Methods: We conducted a case-control study nested within a longitudinal cohort of household contacts of pulmonary TB cases in Lima, Peru. We defined cases as HIV-negative household contacts with blood samples who developed TB disease at least 15 days after enrollment of index patient...
May 20, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28531231/utility-of-th1-cell-immune-responses-for-distinguishing-active-tuberculosis-from-non-active-tuberculosis-a-case-control-study
#4
Lifan Zhang, Xinhe Cheng, Sainan Bian, Yanhua Song, Qiang Li, Mengqiu Gao, Yueqiu Zhang, Xiaochun Shi, Xiaoqing Liu
Currently available Interferon-γ release assay (IGRA) cannot reliably differentiate active TB (ATB) from non-active TB (non-ATB). A study was performed to evaluate the value of Mycobacterium tuberculosis (MTB) specific Th1 cell immune responses which test IFN-γ and IL-2 simultaneous for differentiating ATB from non-ATB. Forty-nine newly diagnosed inpatients with ATB (26 pulmonary TB and 23 extrapulmonary TB) were enrolled as the ATB group. Forty-five volunteers with latent tuberculosis infection (LTBI) and twenty with evidence of previous TB were enrolled during the same period as the non-ATB group...
2017: PloS One
https://www.readbyqxmd.com/read/28531173/a-scoring-system-to-effectively-evaluate-central-nervous-system-tuberculosis-in-patients-with-military-tuberculosis
#5
Yongjiu Xiao, Shuqing Yu, Qingliang Xue, Shan Lang, Junping Sun, Dan Feng, Jianxin Wang
There is currently no convenient way to effectively evaluate whether a miliary tuberculosis patient is complicated with central nervous system (CNS) tuberculosis. We aimed to find such a way by analyzing the clinical data of these patients. Fifty patients with confirmed miliary tuberculosis and 31 patients with confirmed miliary tuberculosis complicated with CNS tuberculosis from 2010 to 2014 were selected. Their general conditions, clinical features and laboratory tests were analyzed. Factors that were significantly different between them were chosen to performed multivariate and univariate logistic regression analyses, and factors with significant P values were used to establish a scoring system...
2017: PloS One
https://www.readbyqxmd.com/read/28530656/metabolic-anticipation-in-mycobacterium-tuberculosis
#6
Hyungjin Eoh, Zhe Wang, Emilie Layre, Poonam Rath, Roxanne Morris, D Branch Moody, Kyu Y Rhee
Humans serve as both host and reservoir for Mycobacterium tuberculosis, making tuberculosis a theoretically eradicable disease. How M. tuberculosis alternates between host-imposed quiescence and sporadic bouts of replication to complete its life cycle, however, remains unknown. Here, we identify a metabolic adaptation that is triggered upon entry into hypoxia-induced quiescence but facilitates subsequent cell cycle re-entry. Catabolic remodelling of the cell surface trehalose mycolates of M. tuberculosis specifically generates metabolic intermediates reserved for re-initiation of peptidoglycan biosynthesis...
May 22, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28530443/association-of-single-nucleotide-polymorphism-in-the-hepcidin-promoter-gene-with-susceptibility-to-extrapulmonary-tuberculosis
#7
Li Liang, Huijuan Liu, Jun Yue, Li-Rong Liu, Min Han, Liu-Lin Luo, Yan-Lin Zhao, Heping Xiao
BACKGROUND: Hepcidin is a 25-amino acid peptide produced by the liver in response to inflammation and iron overload. It is encoded by the hepcidin antimicrobial peptide (HAMP) gene and plays a key role in innate immunity. Previous studies have reported that a -582 A>G polymorphism in the HAMP promoter (HAMP-P) affects hepcidin expression, causing susceptibility to various bacterial and viral pathogens. However, it is not known whether the HAMP-P -582 A>G polymorphism is associated with tuberculosis (TB) susceptibility...
May 22, 2017: Genetic Testing and Molecular Biomarkers
https://www.readbyqxmd.com/read/28530057/-hansen-s-disease-in-israel
#8
REVIEW
Leon Gilead, Ruth Wexler
Hansen's disease (HD) is an anthropophylic, infectious, chronic disease, caused by Mycobacterium leprae. The systemic disease, affecting both males and females at any age, involves mainly the skin and the peripheral nerves located in the limbs close to the skin. Traditionally the treatment of HD patients was entrusted to dermatologists. Current drug therapy given at an early stage can prevent many of the complications, and enables patients to go on with life. In 95% of the population there is an innate immunity, which following exposure, enables the development of an effective immune response preventing the development of overt clinical disease...
October 2016: Harefuah
https://www.readbyqxmd.com/read/28529959/getting-inside-type-i-ifns-type-i-ifns-in-intracellular-bacterial-infections
#9
REVIEW
Deann T Snyder, Jodi F Hedges, Mark A Jutila
Type I interferons represent a unique and complex group of cytokines, serving many purposes during innate and adaptive immunity. Discovered in the context of viral infections, type I IFNs are now known to have myriad effects in infectious and autoimmune disease settings. Type I IFN signaling during bacterial infections is dependent on many factors including whether the infecting bacterium is intracellular or extracellular, as different signaling pathways are activated. As such, the repercussions of type I IFN induction can positively or negatively impact the disease outcome...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28529930/the-central-role-of-ifi204-in-ifn-%C3%AE-release-and-autophagy-activation-during-mycobacterium-bovis-infection
#10
Liu Chunfa, Sun Xin, Li Qiang, Srinand Sreevatsan, Lifeng Yang, Deming Zhao, Xiangmei Zhou
Mycobacterium bovis (M. bovis) is the pathogen of animals and humans that can replicate in the phagosomes of myeloid cells. Cytosolic detection of bacterial products plays a crucial role in initiating the innate immune response, including autophagy activation and interferon-β (IFN-β) release. Although IFN-β release and autophagy activation have been reported during mycobacterium infection, the mechanisms underlying remains poorly defined. Here, we demonstrated that IFN-β release increases in macrophages exposed to M...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28529886/disseminated-mycobacterium-abscessus-infection-in-a-peritoneal-dialysis-patient
#11
Vincent H J F Mooren, Michiel W P Bleeker, Jakko van Ingen, Mirjam H A Hermans, Peter C Wever
A disseminated peritoneal dialysis-related Mycobacterium abscessus infection is very rare. M. abscessus belongs to the rapidly growing mycobacteria and can be misidentified as a diphtheroid bacterium, which in our case delayed diagnosis and optimal treatment. Due to intrinsic resistance to most antimicrobials, therapeutic options in M. abscessus infections are limited. Infection often leads to catheter loss. A fatal outcome, like in our case, is not exceptional.
2017: IDCases
https://www.readbyqxmd.com/read/28529884/osteomyelitis-due-to-mycobacterium-kansasii-in-a-patient-with-sarcoidosis
#12
N van Herwaarden, H Bavelaar, R Janssen, A Werre, A Dofferhoff
No abstract text is available yet for this article.
2017: IDCases
https://www.readbyqxmd.com/read/28529300/yi-kwang-su-s-love-and-history-records-of-modern-hospital-under-the-japanese-colonial-period
#13
Byoung Hoon Lee
This article aims to evaluate and analyze the description of the modern hospital as history record, which appeared in YI Kwang Su's novel Love. This novel has mentioned in detail western style clinic, Bukgando Catholic hospital, tuberculosis sanitarium as its main space. Modern hospitals are depicted in the novel has a great significance in historical aspect as well as in literary aspect. The most data on modern hospital is laws, statistics and newspaper archives. These materials are a great help to understand the history and status of the modern hospital...
December 2016: Ŭi Sahak
https://www.readbyqxmd.com/read/28529206/bedaquiline-for-the-treatment-of-multidrug-resistant-tuberculosis-another-missed-opportunity
#14
EDITORIAL
Lorenzo Guglielmetti
No abstract text is available yet for this article.
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28529205/effectiveness-and-safety-of-bedaquiline-containing-regimens-in-the-treatment-of-mdr-and-xdr-tb-a-multicentre-study
#15
Sergey E Borisov, Keertan Dheda, Martin Enwerem, Rodolfo Romero Leyet, Lia D'Ambrosio, Rosella Centis, Giovanni Sotgiu, Simon Tiberi, Jan-Willem Alffenaar, Andrey Maryandyshev, Evgeny Belilovski, Shashank Ganatra, Alena Skrahina, Onno Akkerman, Alena Aleksa, Rohit Amale, Janina Artsukevich, Judith Bruchfeld, Jose A Caminero, Isabel Carpena Martinez, Luigi Codecasa, Margareth Dalcolmo, Justin Denholm, Paul Douglas, Raquel Duarte, Aliasgar Esmail, Mohammed Fadul, Alexey Filippov, Lina Davies Forsman, Mina Gaga, Julia-Amaranta Garcia-Fuertes, José-María García-García, Gina Gualano, Jerker Jonsson, Heinke Kunst, Jillian S Lau, Barbara Lazaro Mastrapa, Jorge Lazaro Teran Troya, Selene Manga, Katerina Manika, Pablo González Montaner, Jai Mullerpattan, Suzette Oelofse, Martina Ortelli, Domingo Juan Palmero, Fabrizio Palmieri, Antonella Papalia, Apostolos Papavasileiou, Marie-Christine Payen, Emanuele Pontali, Carlos Robalo Cordeiro, Laura Saderi, Tsetan Dorji Sadutshang, Tatsiana Sanukevich, Varvara Solodovnikova, Antonio Spanevello, Sonam Topgyal, Federica Toscanini, Adrian R Tramontana, Zarir Farokh Udwadia, Pietro Viggiani, Veronica White, Alimuddin Zumla, Giovanni Battista Migliori
Large studies on bedaquiline used to treat multidrug-resistant (MDR-) and extensively drug-resistant tuberculosis (XDR-TB) are lacking. This study aimed to evaluate the safety and effectiveness of bedaquiline-containing regimens in a large, retrospective, observational study conducted in 25 centres and 15 countries in five continents.428 culture-confirmed MDR-TB cases were analysed (61.5% male; 22.1% HIV-positive, 45.6% XDR-TB). MDR-TB cases were admitted to hospital for a median (interquartile range (IQR)) 179 (92-280) days and exposed to bedaquiline for 168 (86-180) days...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28529204/the-long-and-winding-road-of-chest-radiography-for-tuberculosis-detection
#16
EDITORIAL
Cecily Miller, Knut Lonnroth, Giovanni Sotgiu, Giovanni Battista Migliori
No abstract text is available yet for this article.
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28529202/an-evaluation-of-automated-chest-radiography-reading-software-for-tuberculosis-screening-among-public-and-private-sector-patients
#17
Md Toufiq Rahman, Andrew J Codlin, Md Mahfuzur Rahman, Ayenun Nahar, Mehdi Reja, Tariqul Islam, Zhi Zhen Qin, Md Abdus Shakur Khan, Sayera Banu, Jacob Creswell
Computer-aided reading (CAR) of medical images is becoming increasingly common, but few studies exist for CAR in tuberculosis (TB). We designed a prospective study evaluating CAR for chest radiography (CXR) as a triage tool before Xpert MTB/RIF (Xpert).Consecutively enrolled adults in Dhaka, Bangladesh, with TB symptoms received CXR and Xpert. Each image was scored by CAR and graded by a radiologist. We compared CAR with the radiologist for sensitivity and specificity, area under the receiver operating characteristic curve (AUC), and calculated the potential Xpert tests saved...
May 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28528648/copper-and-antibiotics-discovery-modes-of-action-and-opportunities-for-medicinal-applications
#18
Alex G Dalecki, Cameron L Crawford, Frank Wolschendorf
Copper is a ubiquitous element in the environment as well as living organisms, with its redox capabilities and complexation potential making it indispensable for many cellular functions. However, these same properties can be highly detrimental to prokaryotes and eukaryotes when not properly controlled, damaging many biomolecules including DNA, lipids, and proteins. To restrict free copper concentrations, all bacteria have developed mechanisms of resistance, sequestering and effluxing labile copper to minimize its deleterious effects...
2017: Advances in Microbial Physiology
https://www.readbyqxmd.com/read/28528617/grotesque-face-secondary-to-immunotherapy-cure-circumvallating-to-curse
#19
Keshavamurthy Vinay, Tarun Narang, Sunil Dogra, Uma N Saikia
A 45-year-old woman presented with multiple, slightly painful, reddish, nodular facial lesions that had developed at the site of Mycobacterium w vaccine injections given for her facial warts 4 weeks prior. She had not received a sensitization dose of Mycobacterium w vaccine, and all of the inflamed lesions were injected at the same time. On examination, approximately 20 erythematous, succulent nodules of variable size were noted over the cheeks and forehead (Figure 1). Some of these lesions had purulent discharge due to secondary infection...
2017: Skinmed
https://www.readbyqxmd.com/read/28528614/multifocal-tuberculosis-verrucosa-cutis-a-manifestation-extraordinary-of-reactivation-secondary-tuberculosis
#20
Virendra N Sehgal, Prashant Verma, Sambit N Bhattacharya, Sonal Sharma, Navjeevan Singh
A BCG (Bacillus Calmette-Guérin)-vaccinated 78-year-old man, a native Indian, reported with numerous asymptomatic, peanut-sized, dirty gray, elevated eruptions of 1 year's duration appearing over apparently normal skin on the upper and lower extremities (Figure 1). The onset of the eruptions had been sudden, but they had progressed slowly. A history of cough and/or expectoration, evening rise of temperature, night sweats, or loss of appetite and weight was denied.
2017: Skinmed
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