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https://www.readbyqxmd.com/read/30020038/drug-resistance-pattern-in-mycobacterium-tuberculosis-to-the-first-line-drugs-of-pulmonary-tuberculosis-patients-at-hazara-region-pakistan
#1
Faheem Jan, Shahid Wali, Sadia Sadia, Muhammad Taj Akbar, Hafiz Sajid Akbar, Waqas Ahmad, Manzoor Ahmad, Anwar Khalid
Introduction: Multidrug resistant TB (MDR-TB), defined as resistance to at least rifampicin and isoniazid together, has been rapidly spreading in recent years. In new pulmonary tuberculosis patients, rapid spread of MDR-TB and XDR-TB challenging the effectiveness of national TB control programs especially in many low-income countries. This study was aimed to determine the resistance pattern of Mycobacterium tuberculosis among new cases, cured, failure, relapse, defaulted, treatment completed, treatment not evaluated and suspect to be resistant to first line antitubercular drugs of pulmonary tuberculosis (PTB)...
March 2018: Tüberküloz Ve Toraks
https://www.readbyqxmd.com/read/30018074/impact-of-immunopathology-on-the-antituberculous-activity-of-pyrazinamide
#2
Landry Blanc, Jansy Passiflora Sarathy, Nadine Alvarez Cabrera, Paul O'Brien, Isabela Dias-Freedman, Marizel Mina, James Sacchettini, Radojka M Savic, Martin Gengenbacher, Brendan K Podell, Brendan Prideaux, Thomas Ioerger, Thomas Dick, Véronique Dartois
In the 1970s, inclusion of pyrazinamide (PZA) in the drug regimen of tuberculosis (TB) patients for the first 2 mo achieved a drastic reduction of therapy duration. Until now, however, the mechanisms underlying PZA's unique contribution to efficacy have remained controversial, and animal efficacy data vary across species. To understand how PZA kills bacterial populations present in critical lung lesion compartments, we first characterized a rabbit model of active TB, showing striking similarities in lesion types and fates to nonhuman primate models deemed the most appropriate surrogates of human TB...
July 17, 2018: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/29984149/a-case-of-pulmonary-infection-caused-by-mycobacterium-asiaticum-difficulties-on-diagnostic-and-therapeutic-approaches
#3
Pureepat Arttawejkul, Napplika Kongpolprom
A 56-year-old previously healthy female presented with chronic productive cough and fever. Chest X-ray revealed right middle lung opacities. Sputum acid fast bacilli smear was positive, however polymerase chain reaction was negative for Mycobacterium tuberculosis . Further investigations were pursued, which identified Mycobacterium asiaticum. Appropriate therapy with isoniazid, rifampin and clarithromycin for total 18 months (including pyrazinamide and ethambutol for first 4 months) resulted in clinical and radiographic improvement...
2018: Respiratory Medicine Case Reports
https://www.readbyqxmd.com/read/29981824/silver-nanoparticle-functionalized-cs-g-ca-ma-pza-carrier-for-sustainable-anti-tuberculosis-drug-delivery
#4
Rajendran Amarnath Praphakar, Murugaraj Jeyaraj, Mukhtar Ahmed, Subbiah Suresh Kumar, Mariappan Rajan
Recently, drug functionalized biodegradable polymers have been appreciated to be imperative to fabricate multi-drug delivery nanosystems for sustainable drug release. In this work, amphiphilic chitosan-grafted-(cetyl alcohol-maleic anhydride-pyrazinamide) (CS-g-(CA-MA-PZA)) was synthesized by multi-step reactions. The incorporation of rifampicin (RF) and entrapment of silver nanoparticles (Ag NPs) on CS-g-(CA-MA-PZA) polymer was carried out by dialysis technique. From the FT-IR experiment, the polymer modification, incorporation of drugs and the entrapment of Ag NPs on micelles were confirmed...
July 5, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29954321/bacille-calmette-gu%C3%A3-rin-bcg-spondylitis-with-adjacent-mycotic-aortic-aneurysm-after-intravesical-bcg-therapy-a-case-report-and-literature-review
#5
Takuya Kusakabe, Kenji Endo, Itaru Nakamura, Hidekazu Suzuki, Hirosuke Nishimura, Shinji Fukushima, Kengo Yamamoto
BACKGROUND: Although intravesical bacille Calmette-Guérin (BCG) therapy is accepted as an effective treatment for bladder cancer, serious complications may occur in rare cases. To date, only 4 cases have been reported in which the patient developed a combination of mycotic aortic aneurysm and BCG spondylitis. Accurate diagnosis of BCG spondylitis is important because it is an iatrogenic disease, and its treatment is different from usual tuberculous spondylitis. However, distinguishing BCG spondylitis from usual tuberculous spondylitis is very difficult and takes a long time...
June 28, 2018: BMC Infectious Diseases
https://www.readbyqxmd.com/read/29953299/berberis-aristata-ameliorates-testicular-toxicity-induced-by-combination-of-first-line-tuberculosis-drugs-rifampicin-isoniazid-pyrazinamide-in-normal-wistar-rats
#6
Radhika Sharma, Neha Goyal, Mandakini Singla, Vijay Lakshmi Sharma
First-line antituberculosis drugs, namely, isoniazid (INH), rifampicin (RIF), and pyrazinamide (PZA), contribute to diverse pathological complications. Testicular toxicity is one such complication. Berberis aristata DC is an herb with potentially curative characteristics. The aim of this study was to test whether extract of Berberis aristata DC (Berberidaceae) has curing potential against testicular toxicity. Characterization of extract was done using ultra-performance liquid chromatography along with acute toxicity testing...
June 28, 2018: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/29938624/interfacial-phenomenon-based-biocompatible-alginate-chitosan-nanoparticles-containing-isoniazid-and-pyrazinamide
#7
Kalpana Kushwaha, Harinath Dwivedi
BACKGROUND: Tuberculosis (TB) is one of major health challenge in the world. The current treatment of TB needs daily administration of combined drug therapy for six or more months. Sometime non adherence, less bioavailability from current therapy develops multidrug resistance, as a result high dose requirement and subsequent intolerable toxicity is seen. Therefore, nanotechnology gained special attention as it has potential to improve patient compliance, bioavailability and reduction in dosing frequency...
June 25, 2018: Pharmaceutical Nanotechnology
https://www.readbyqxmd.com/read/29921403/pyrazinamide-resistant-mycobacterium-tuberculosis-isolates-from-khyber-pakhtunkhwa-and-rpsa-mutations
#8
M T Khan, S I Malik, A I Bhatti, S Ali, A S Khan, M T Zeb, T Nadeem, S Fazal
Pyrazinamide (PZA) is a key first-line antibiotic used for the short-course treatment of drug-sensitive and multidrug-resistant (MDR) isolates of tuberculosis. PZA exhibits potent action against semi-dormant bacilli in acidic environments. However, mutations that occur in target genes may cause technical difficulties in the diagnosis of PZA resistance during drug susceptibility testing. The objective of the current study is to identify mutations in pncAWT rpsA and rpsAWT panD genes among PZA-resistant isolates of Mycobacterium tuberculosis (MTB) circulating in the Pashtun dominant region, Khyber Pakhtunkhwa, Pakistan...
May 2018: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/29914960/evaluation-of-the-adequacy-of-who-revised-dosages-of-the-first-line-anti-tuberculosis-drugs-in-children-with-tuberculosis-using-population-pharmacokinetic-modeling-and-simulations
#9
Yasuhiro Horita, Abdullah Alsultan, Awewura Kwara, Sampson Antwi, Antony Enimil, Antoinette Orstin, Albert Dompreh, Hongmei Yang, Lubbe Wiesner, Charles A Peloquin
Optimal doses for anti-tuberculosis (TB) drugs in children have yet to be established. In 2010, the World Health Organization (WHO) recommended revised dosages of the first-line anti-TB drugs for children. Pharmacokinetic (PK) studies that investigated the adequacy of the WHO revised dosages to date have yielded conflicting results. We performed population PK modeling using data from one of these studies to identify optimal dosages ranges. Ghanaian children with tuberculosis on recommended therapy with rifampin (RIF), isoniazid (INH), pyrazinamide (PZA) and ethambutol (EMB) for at least 4 weeks had blood samples collected at pre-dose, 1, 2, 4, and 8-hours post-dose...
June 18, 2018: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29897291/isoniazid-induced-neuropathy-in-a-pre-pubertal-child
#10
Naman S Shetty, Ira Shah
Isoniazid (INH)-induced peripheral neuritis is not uncommonly reported in adults, especially those with malnutrition and alcoholism, but it is very rare in children. INH leads to peripheral neuritis by causing a deficiency in the serum level of pyridoxine which depends on the dose of INH, duration of treatment and the patient's nutritional and acetylator status. A 12-year-old girl developed tingling and numbness of the lower limbs after commencing anti-tuberculous therapy which included INH 10 mg/kg/day. The symptoms continued despite the dose being reduced to 5 mg/kg/day...
June 13, 2018: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/29864118/drug-resistance-patterns-of-mycobacterium-tuberculosis-strains-and-associated-risk-factors-among-multi-drug-resistant-tuberculosis-suspected-patients-from-ethiopia
#11
Eyob Abera Mesfin, Dereje Beyene, Abreham Tesfaye, Addisu Admasu, Desalegn Addise, Miskir Amare, Biniyam Dagne, Zelalem Yaregal, Ephrem Tesfaye, Belay Tessema
BACKGROUND: Multidrug drug-resistant tuberculosis (MDR-TB) is a major health problem and seriously threatens TB control and prevention efforts globally. Ethiopia is among the 30th highest TB burden countries for MDR-TB with 14% prevalence among previously treated cases. The focus of this study was on determining drug resistance patterns of Mycobacterium tuberculosis among MDR-TB suspected cases and associated risk factors. METHODS: A cross-sectional study was conducted in Addis Ababa from June 2015 to December 2016...
2018: PloS One
https://www.readbyqxmd.com/read/29862951/is-sequencing-better-than-phenotypic-tests-for-the-detection-of-pyrazinamide-resistance
#12
I Bouzouita, A M Cabibbe, A Trovato, H Draoui, A Ghariani, B Midouni, L Essalah, E Mehiri, D M Cirillo, L Slim-Saidi
SETTING: Phenotypic tests used to detect pyrazinamide (PZA) resistance are slow and have a high rate of false resistance. OBJECTIVE: To evaluate the accuracy of pncA sequencing for the detection of PZA resistance in Mycobacterium tuberculosis strains isolated in Tunisia. DESIGN: A total of 82 isolates, 41 resistant and 41 susceptible to PZA on BACTEC™ MGIT™ 960, were sequenced for pncA. Whole genome sequencing was performed for strains that were phenotypically resistant and had wild-type pncA in addition to MGIT retesting with a modified protocol...
June 1, 2018: International Journal of Tuberculosis and Lung Disease
https://www.readbyqxmd.com/read/29851791/perianal-ulcerative-skin-tuberculosis-a-case-report
#13
Shaofang Wu, Wu Wang, Huan Chen, Wen Xiong, Xin Song, Xinmin Yu
RATIONALE: Ulcerative skin tuberculosis (TB) is a rare form of extrapulmonary TB. CASE REPORT: We present a case of a 65-year-old patient with perianal ulcer, which had been present for 1 year. Anamnesis revealed he had been persistently coughing for the same period of time. Histological examination of perianal skin showed necrotizing granulomatous lesions, acid-fast staining in sputum samples was ++++, TB antibody in the blood was positive, TB DNA test was positive, and chest scan that showed secondary pulmonary TB accompanied by possible pulmonary cavity formation in the 2 upper lungs...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29795025/enhanced-anti-mycobacterium-tuberculosis-immunity-over-time-with-combined-drug-and-immunotherapy-treatment
#14
Sasha E Larsen, Susan L Baldwin, Mark T Orr, Valerie A Reese, Tiffany Pecor, Brian Granger, Natasha Dubois Cauwelaert, Brendan K Podell, Rhea N Coler
It is estimated that one third of the world's population is infected with Mycobacterium tuberculosis ( Mtb ). This astounding statistic, in combination with costly and lengthy treatment regimens make the development of therapeutic vaccines paramount for controlling the global burden of tuberculosis. Unlike prophylactic vaccination, therapeutic immunization relies on the natural pulmonary infection with Mtb as the mucosal prime that directs boost responses back to the lung. The purpose of this work was to determine the protection and safety profile over time following therapeutic administration of our lead Mtb vaccine candidate, ID93 with a synthetic TLR4 agonist (glucopyranosyl lipid adjuvant in a stable emulsion (GLA-SE)), in combination with rifampicin, isoniazid, and pyrazinamide (RHZ) drug treatment...
May 24, 2018: Vaccines
https://www.readbyqxmd.com/read/29794790/left-lung-hypoplasia-with-a-right-tuberculous-pleural-effusion-after-childbirth-a-case-report
#15
Shan Lin, Wei Guan, CuoMao LaZhou, Yingqing Shi
RATIONALE: Unilateral hypoplasia of the lung is a rare congenital condition, the mechanism of which is poorly understood. Primary pulmonary hypoplasia occurring in an adult is extremely rare and we present what is probably the first case of a link to a tuberculous pleural effusion in a young woman after childbirth. PATIENT CONCERNS: Herein, we describe a 31-year-old woman with left lung hypoplasia, and she not only survived to adulthood without problems, but was able to deliver a baby in natural labor...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29791556/clinical-aspects-in-patients-with-pulmonary-infection-caused-by-mycobacteria-of-the-mycobacterium-abscessus-complex-in-the-brazilian-amazon
#16
José Tadeu Colares Monteiro, Karla Valéria Batista Lima, Adriana Rodrigues Barretto, Ismari Perini Furlaneto, Glenda Moraes Gonçalves, Ana Roberta Fusco da Costa, Maria Luiza Lopes, Margareth Pretti Dalcolmo
OBJECTIVE: To describe the clinical manifestations of patients with pulmonary infection caused by mycobacteria of the Mycobacterium abscessus complex (MABSC), and to compare these manifestations with those of patients infected with other nontuberculous mycobacteria (NTM). METHODS: This was a retrospective cohort study involving 43 patients divided into two groups: the MABSC group, consisting of patients with pulmonary infection caused by MABSC (n = 17); and the NTM group, consisting of patients with pulmonary infection caused by NTM other than MABSC (n = 26)...
April 2018: Jornal Brasileiro de Pneumologia: Publicaça̋o Oficial da Sociedade Brasileira de Pneumologia e Tisilogia
https://www.readbyqxmd.com/read/29785553/antituberculosis-drug-induced-fixed-drug-eruption-a-case-report
#17
Jitendra H Vaghela, Vivek Nimbark, Manish Barvaliya, Hita Mehta, Bhavesh Chavada
Fixed drug eruption (FDE) was caused by fixed-dose combination (FDC) of antituberculosis drugs in the form of tablet Forecox® (rifampicin [rifampin] 225 mg + isoniazid 150 mg + pyrazinamide 750 mg + ethambutol 400 mg) in a 40-year-old male patient with a history of drug allergy. The patient developed FDE after taking the third dose of tablet Forecox® for pulmonary tuberculosis. Tablet Forecox® was withdrawn and the patient recovered from the reaction after 15 days of treatment for FDE. As per World Health Organization-Uppsala Monitoring Centre (WHO-UMC) and Naranjo causality assessment criteria, the association between the reaction and tablet Forecox® was possible and probable, respectively...
May 21, 2018: Drug Safety—Case Reports
https://www.readbyqxmd.com/read/29785388/genital-tuberculosis-in-postmenopausal-women-with-variable-clinical-presentations-a-report-of-3-cases
#18
Ashima Arora, Shameema Anvar Sadath
Genital tuberculosis is usually diagnosed in young women being assessed for infertility. After menopause it usually presents with symptoms resembling endometrial malignancy, such as postmenopausal bleeding, persistent vaginal discharge and pyometra. The diagnosis is made by detection of acid-fast bacilli on microscopy or bacteriological culture and/or presence of epithelioid granuloma on biopsy. Anti-tubercular therapy involves the use of rifampicin, isoniazid, pyrazinamide and ethambutol. Surgery is indicated if a pelvic mass and recurrence of pain or bleeding persist after 9 months of treatment...
April 2018: Case Reports in Women's Health
https://www.readbyqxmd.com/read/29774213/a-rapid-growth-independent-antibiotic-resistance-detection-test-by-sybr-green-propidium-iodide-viability-assay
#19
Jie Feng, Rebecca Yee, Shuo Zhang, Lili Tian, Wanliang Shi, Wen-Hong Zhang, Ying Zhang
Antibiotic-resistant bacteria have caused huge concerns and demand innovative approaches for their prompt detection. Current antimicrobial susceptibility tests (AST) rely on the growth of the organisms which takes 1-2 days for fast-growing organisms and several weeks for slow growing organisms. Here, we show for the first time the utility of the SYBR Green I/propidium iodide (PI) viability assay for rapidly identifying antibiotic resistance in less than 30 min for major, antibiotic-resistant, fast-growing bacteria, such as Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae , and Acinetobacter baumannii for bactericidal and bacteriostatic agents and in 16 h for extremely rapid detection of drug resistance for isoniazid and pyrazinamide in slow-growing Mycobacterium tuberculosis ...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29761826/computational-discovery-of-potent-drugs-to-improve-the-treatment-of-pyrazinamide-resistant-mycobacterium-tuberculosis-mutants
#20
Manaswini Jagadeb, Surya N Rath, Avinash Sonawane
Emergence of multi-drug resistance tuberculosis has become a serious health problem globally. Accumulation of mutations in the drug target led to the development of multi-drug resistant mycobacterial strains that have made most of the conventional drugs ineffective. Hence, there is desperate need for the development of new therapeutic strategies. Here, we focused on the analysis of mutations in Mycobacterium tuberculosis (Mtb) PncA (pyrazinamidase) that is responsible for resistance against first-line anti-tuberculosis pyrazinamide (PZA) drug...
May 15, 2018: Journal of Cellular Biochemistry
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