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https://www.readbyqxmd.com/read/28547750/management-of-long-term-therapy-with-biological-drugs-in-psoriatic-patients-with-latent-tuberculosis-infection-in-real-life-setting
#1
Andrea Conti, Stefano Piaserico, Paolo Gisondi, Giulia Odorici, Giovanna Galdo, Claudia Lasagni, Giovanni Pellacani
Psoriatic patients with latent tuberculosis infection (LTBI) need a prophylaxis before starting a treatment with biological drugs. The aim of this study is to investigate the safety and efficacy of prophylaxis of LTBI in psoriatic patients receiving long-term biological drugs. The study included 56 patients (42 male and 14 female) affected by moderate-to-severe psoriasis (mean PASI: 12.8 ± 6.9 SD) treated with anti-TNF-α and/or anti IL 12, 23 and/or anti-CD11 drugs with a diagnosis of LTBI. LTBI diagnosis was based on tuberculin skin test and/or QuantiFERON TB Gold test positivity and chest X-ray suggestive, without clinical, or microbiological evidence of active disease...
May 26, 2017: Dermatologic Therapy
https://www.readbyqxmd.com/read/28538778/estimated-rates-of-recurrence-cure-and-treatment-abandonment-in-patients-with-pulmonary-tuberculosis-treated-with-a-four-drug-fixed-dose-combination-regimen-at-a-tertiary-health-care-facility-in-the-city-of-rio-de-janeiro-brazil
#2
Vangie Dias da Silva, Fernanda Carvalho de Queiroz Mello, Sonia Catarina de Abreu Figueiredo
Objective: To estimate the rates of recurrence, cure, and treatment abandonment in patients with pulmonary tuberculosis treated with a four-drug fixed-dose combination (FDC) regimen, as well as to evaluate possible associated factors. Methods: This was a retrospective observational study involving 208 patients with a confirmed diagnosis of pulmonary tuberculosis enrolled in the Hospital Tuberculosis Control Program at the Institute for Thoracic Diseases, located in the city of Rio de Janeiro, Brazil...
March 2017: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/28535897/treatment-of-latent-tuberculosis-in-patients-with-juvenile-rheumatic-diseases-a-systematic-review
#3
José Cleosmaque Leite Júnior, Regina Terse Trindade Ramos, Teresa Cristina Martins Vicente Robazzi
INTRODUCTION: Children and adolescents with rheumatic diseases receiving TNF blockers are at risk for the activation of latent Mycobacterium tuberculosis infection (LTBI). Although LTBI treatment is indicated in this group, there are different therapeutic regimens in the literature, without a definite consensus. OBJECTIVES: To review in the literature therapeutic schemes used and indicated for the treatment of LTBI in these patients. METHODS: Systematic review of the literature, using health databases, selecting studies that addressed the treatment of LTBI in patients with juvenile rheumatic diseases using TNF blockers, from 1990 to 2015...
May 2017: Revista Brasileira de Reumatologia
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
#4
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/28528545/discovery-and-biosynthesis-of-gladiolin-a-burkholderia-gladioli-antibiotic-with-promising-activity-against-mycobacterium-tuberculosis
#5
Lijiang Song, Matthew Jenner, Joleen Masschelein, Cerith Jones, Matthew J Bull, Simon R Harris, Ruben C Hartkoorn, Anthony Vocat, Isolda Romero-Canelón, Paul Coupland, Gordon Webster, Matthew Dunn, Rebecca Weiser, Christopher Paisey, Stewart T Cole, Julian Parkhill, Eshwar Mahenthiralingam, Gregory L Challis
An antimicrobial activity screen of Burkholderia gladioli BCC0238, a clinical isolate from a cystic fibrosis patient, led to the discovery of gladiolin, a novel macrolide antibiotic with potent activity against Mycobacterium tuberculosis H37Rv. Gladiolin is structurally-related to etnangien, a highly unstable antibiotic from Sorangium cellulosum that is also active against Mycobacteria. Like etnangien, gladiolin was found to inhibit RNA polymerase, a validated drug target in M. tuberculosis. However, gladiolin lacks the highly labile hexaene moiety of etnangien and was thus found to possess significantly increased chemical stability...
May 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28528187/anticonvulsant-activity-of-pseudospondias-microcarpa-a-rich-engl-hydroethanolic-leaf-extract-in-mice-the-role-of-excitatory-inhibitory-neurotransmission-and-nitric-oxide-pathway
#6
Donatus W Adongo, Priscilla K Mante, Kennedy K E Kukuia, Robert P Biney, Eric Boakye-Gyasi, Charles K Benneh, Elvis O Ameyaw, Eric Woode
ETHNOPHARMACOLOGICAL RELEVANCE: Pseudospondias microcarpa (A. Rich) Engl. is a plant used for managing various diseases including central nervous system disorders. AIM OF THE STUDY: This study explored the anticonvulsant activity of P. microcarpa hydroethanolic leaf extract (PME) as well as possible mechanism(s) of action in animal models. METHODS: Effects of PME was assessed in electroconvulsive (the maximal electroshock and 6-Hz seizures) and chemoconvulsive (pentylenetetrazole-, picrotoxin-, isoniazid-, 4-aminopyridine-, and strychnine-induced seizures) models of epilepsy...
May 17, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28527253/-prevalence-of-mycobacterium-tuberculosis-resistance-to-quinolones-and-injectables-in-colombia-2012-2013
#7
Claudia Llerena, Angie Zabaleta, Angélica Valbuena, Martha Murcia
INTRODUCTION: Tuberculosis is a health problem worldwide. The World Health Organization estimated 9.6 million new cases and 480,000 multirresistant cases for 2014. The assessment of resistance to quinolones and injectables was implemented only a few years ago, so its prevalence is not known. OBJECTIVE: To determine the prevalence of resistance to amikacin, capreomycin and ofloxacin in cases of tuberculosis resistant to isoniazid and/or rifampin during 2012-2013...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527252/-characterization-of-clinical-isolates-of-mycobacterium-tuberculosis-from-hiv-positive-individuals-in-colombia-2012
#8
Claudia Castro, Alba Ricardo, Angie Zabaleta, Claudia Llerena, Gloria Puerto
INTRODUCTION: One third of the increase in tuberculosis cases is attributed to the spread of HIV. In 2012, 1,397 HIV-associated tuberculosis cases were reported in Colombia, i.e., 11.8% of the total cases. Molecular epidemiology tools help to understand the transmission of tuberculosis. OBJECTIVE: To characterize clinical isolates of Mycobacterium tuberculosis derived from HIV-infected individuals, received at the Laboratorio Nacional de Referencia in the Instituto Nacional de Salud...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28527245/-description-of-mycobacterium-tuberculosis-mutations-conferring-resistance-to-rifampicin-and-isoniazid-detected-by-genotype%C3%A2-mtbdrplus-v-2-in-colombia
#9
Claudia Llerena, Raquel Medina
INTRODUCTION: The GenoType®MTBDRplusV.2 assay is a molecular technique endorsed by the World Health Organization and the Pan American Health Organization that allows for the identification of the Mycobacterium tuberculosis complex and the detection of mutations in the rpoβ gene for rifampicin resistance, and katG and inhA genes for isoniazid resistance. Due to the genetic variability in the circulating strains around the world, the national tuberculosis control programs should assess the performance of these new diagnostic technologies and their use under program conditions as rapid tests...
January 24, 2017: Biomédica: Revista del Instituto Nacional de Salud
https://www.readbyqxmd.com/read/28524434/unaffected-reaction-level-in-tuberculin-skin-test-by-long-term-therapy-with-tumor-necrosis-factor-inhibitors-for-rheumatoid-arthritis
#10
Shotaro Yamamoto, Katsuya Nagatani, Takeo Sato, Masahiro Iwamoto, Shino Takatori, Seiji Minota
AIM: The tuberculin skin test (TST) is used to diagnose tuberculosis; however, the influence of tumor necrosis factor (TNF) inhibitors on the test is unclear. This study investigated whether therapy with TNF inhibitors suppresses the TST reaction due to immunosuppression or whether the TST reaction increases due to reactivation of latent Mycobacterium tuberculosis infection. METHOD: Ninety-one patients with rheumatoid arthritis receiving TNF inhibitors (40 using infliximab and 51 using etanercept) were studied...
May 19, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28523442/catalytic-properties-and-heat-stabilities-of-novel-recombinant-human-n-acetyltransferase-2-allozymes-support-existence-of-genetic-heterogeneity-within-the-slow-acetylator-phenotype
#11
David W Hein, Mark A Doll
Human N-acetyltransferase 2 (NAT2) catalyzes the N-acetylation of numerous aromatic amine drugs such as sulfamethazine (SMZ) and hydrazine drugs such as isoniazid (INH). NAT2 also catalyzes the N-acetylation of aromatic amine carcinogens such as 2-aminofluorene and the O- and N,O-acetylation of aromatic amine and heterocyclic amine metabolites. Genetic polymorphism in NAT2 modifies drug efficacy and toxicity as well as cancer risk. Acetyltransferase catalytic activities and heat stability associated with six novel NAT2 haplotypes (NAT2*6C, NAT2*14C, NAT2*14D, NAT2*14E, NAT2*17, and NAT2*18) were compared with that of the reference NAT2*4 haplotype following recombinant expression in Escherichia coli...
May 18, 2017: Archives of Toxicology
https://www.readbyqxmd.com/read/28513421/clinical-and-bacteriological-characteristics-associated-with-clustering-of-multidrug-resistant-tuberculosis
#12
J-Y J-Y Feng, L G Jarlsberg, K Salcedo, J Rose, M Janes, S-Y G Lin, D H Osmond, K C Jost, M K Soehnlen, J Flood, E A Graviss, E Desmond, P K Moonan, P Nahid, P C Hopewell, M Kato-Maeda
<h2>SETTING:</h2><p>The impact of the genetic characteristics of Mycobacterium tuberculosis on the clustering of multidrug-resistant tuberculosis (MDR-TB) has not been analyzed together with clinical and demographic characteristics.</p><h2>OBJECTIVE:</h2><p>To determine factors associated with genotypic clustering of MDR-TB in a community-basedstudy.</p><h2>DESIGN:</h2><p>We measured the proportion of clustered cases among MDR-TB patients and determined the impact of clinical and demographic characteristics and that of three M...
May 16, 2017: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/28512022/synthesis-antimycobacterial-activity-and-docking-study-of-2-aroyl-1-benzopyrano-4-3-c-pyrazol-4-1h-one-derivatives-and-related-hydrazide-hydrazones
#13
Violina T Angelova, Violeta Valcheva, Tania Pencheva, Yulian Voynikov, Nikolay Vassilev, Rositsa Mihaylova, Georgi Momekov, Boris Shivachev
A new convenient method for preparation of 2-aroyl-[1]benzopyrano[4,3-c]pyrazol-4(1H)-one derivatives 5b-g and coumarin containing hydrazide-hydrazone analogues 4a-e was presented. The antimycobacterial activity against reference strain Mycobacterium tuberculosis H37Rv and cytotoxicity against the human embryonic kidney cell line HEK-293 were tested in vitro. All compounds demonstrated significant minimum inhibitory concentrations (MIC) ranging 0.28-1.69μM, which were comparable to those of isoniazid. The cytotoxicity (IC50>200µM) to the "normal cell" model HEK-293T exhibited by 2-aroyl-[1]benzopyrano[4,3-c]pyrazol-4(1H)-one derivatives 5b-e, was noticeably milder compared to that of their hydrazone analogues 4a-e (IC50 33-403µM)...
May 5, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28511895/diagnostic-performance-of-anyplex-ii-mtb-mdr-xdr-for-detection-of-resistance-to-first-and-second-line-drugs-in-mycobacterium-tuberculosis
#14
F Pérez-García, M J Ruiz-Serrano, P López Roa, Fermín Acosta, Laura Pérez-Lago, D García-De-Viedma, E Bouza
PURPOSE: Genotypic methods have considerably improved the diagnosis of multidrug-resistant (MDR) tuberculosis. One of these tests is Anyplex II MTB/MDR/XDR (Anyplex). Our aim was to evaluate the diagnostic performance of this multiplex PCR. METHODS: We conducted our study on 47 MDR tuberculosis and 14 pan-susceptible strains. We evaluated the ability of Anyplex to detect resistance mutations in rpoB (rifampin [RIF]), katG and inhA (isoniazid [INH]), gyrA (fluoroquinolones [FLQ]), and rrs and eis (aminoglycosides [AMG])...
May 13, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28506804/chloroquine-enhances-the-antimycobacterial-activity-of-isoniazid-and-pyrazinamide-by-reversing-inflammation-induced-macrophage-efflux
#15
U Matt, P Selchow, M Dal Molin, S Strommer, O Sharif, K Schilcher, F Andreoni, A Stenzinger, A S Zinkernagel, M Zeitlinger, P Sander, J Nemeth
Mycobacterium tuberculosis (MTB) is notorious for persisting within host macrophages. Efflux pumps decrease intracellular drug levels, thus fostering persistence of MTB during therapy. Isoniazid (INH) and pyrazinamide (PZA) are substrates of the efflux pump breast cancer resistance protein-1 (BCRP-1), which is inhibited by chloroquine (CQ). In this study, BCRP-1 was found to be expressed on macrophages of human origin and on foamy giant cells at the site of MTB infection. In the current in vitro study, interferon-gamma (IFNγ) increased the expression of BCRP-1 in macrophages derived from the human monocytic leukaemia cell line THP-1...
May 12, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28503547/theoretically-guided-analytical-method-development-and-validation-for-the-estimation-of-rifampicin-in-a-mixture-of-isoniazid-and-pyrazinamide-by-uv-spectrophotometer
#16
Mohammad F Khan, Shamima A Rita, Md Shahidulla Kayser, Md Shariful Islam, Sharmeen Asad, Ridwan Bin Rashid, Md Abdul Bari, Muhammed M Rahman, D A Anwar Al Aman, Nurul I Setu, Rebecca Banoo, Mohammad A Rashid
A simple, rapid, economic, accurate, and precise method for the estimation of rifampicin in a mixture of isoniazid and pyrazinamide by UV spectrophotometeric technique (guided by the theoretical investigation of physicochemical properties) was developed and validated. Theoretical investigations revealed that isoniazid and pyrazinamide both were freely soluble in water and slightly soluble in ethyl acetate whereas rifampicin was practically insoluble in water but freely soluble in ethyl acetate. This indicates that ethyl acetate is an effective solvent for the extraction of rifampicin from a water mixture of isoniazid and pyrazinamide...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28495479/limited-sampling-strategies-for-determining-the-area-under-the-plasma-concentration-time-curve-for-isoniazid-might-be-a-valuable-approach-for-optimizing-treatment-in-adult-patients-with-tuberculosis
#17
Piergiorgio Cojutti, Manuela Giangreco, Miriam Isola, Federico Pea
This study aimed to develop clinically feasible models of limited sampling strategy (LSS) for estimation of the area under the concentration-time curve (AUC24h) for isoniazid, that could be applied easily in daily clinical practice for dosage adjustment in adult patients with tuberculosis. Isoniazid plasma concentrations (n=1665) from 185 adult tuberculous patients were used for the development and validation of LSS models to estimate AUC24h following administration of the standard 5 mg/kg dose of isoniazid...
May 8, 2017: International Journal of Antimicrobial Agents
https://www.readbyqxmd.com/read/28489185/risk-factors-associated-with-multidrug-resistant-tuberculosis-in-esp%C3%A3-rito-santo-brazil
#18
Geisa Fregona, Lorrayne Belique Cosme, Cláudia Maria Marques Moreira, José Luis Bussular, Valdério do Valle Dettoni, Margareth Pretti Dalcolmo, Eliana Zandonade, Ethel Leonor Noia Maciel
OBJECTIVE: To analyze the prevalence and factors associated with multidrug-resistant tuberculosis in Espírito Santo, Brazil. METHODS: This is a cross-sectional study of cases of tuberculosis tested for first-line drugs (isoniazid, rifampicin, pyrazinamide, ethambutol, and streptomycin) in Espírito Santo between 2002 and 2012. We have used laboratory data and registration of cases of tuberculosis - from the Sistema Nacional de Agravos de Notificação and Sistema para Tratamentos Especiais de Tuberculose...
April 27, 2017: Revista de Saúde Pública
https://www.readbyqxmd.com/read/28487675/new-insights-in-to-the-intrinsic-and-acquired-drug-resistance-mechanisms-in-mycobacteria
#19
REVIEW
Mohammad J Nasiri, Mehri Haeili, Mona Ghazi, Hossein Goudarzi, Ali Pormohammad, Abbas A Imani Fooladi, Mohammad M Feizabadi
Infectious diseases caused by clinically important Mycobacteria continue to be an important public health problem worldwide primarily due to emergence of drug resistance crisis. In recent years, the control of tuberculosis (TB), the disease caused by Mycobacterium tuberculosis (MTB), is hampered by the emergence of multidrug resistance (MDR), defined as resistance to at least isoniazid (INH) and rifampicin (RIF), two key drugs in the treatment of the disease. Despite the availability of curative anti-TB therapy, inappropriate and inadequate treatment has allowed MTB to acquire resistance to the most important anti-TB drugs...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28482962/isoniazid-monoresistant-tuberculosis-is-associated-with-poor-treatment-outcomes-in-durban-south-africa
#20
Y F van der Heijden, F Karim, G Mufamadi, L Zako, T Chinappa, B E Shepherd, F Maruri, M-Y S Moosa, T R Sterling, A S Pym
SETTING: A large tuberculosis (TB) clinic in Durban, South Africa. OBJECTIVE: To determine the association between isoniazid (INH) monoresistant TB and treatment outcomes. DESIGN: We performed a retrospective longitudinal study of patients seen from 2000 to 2012 to compare episodes of INH-monoresistant TB with those of drug-susceptible TB using logistic regression with robust standard errors. INH-monoresistant TB was treated with modified regimens...
June 1, 2017: International Journal of Tuberculosis and Lung Disease
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