Combination of anti-tuberculosis drugs with vitamin C or NAC against different Staphylococcus aureus and Mycobacterium tuberculosis strains

2016 ◽  
Vol 93 ◽  
pp. 83-87 ◽  
Author(s):  
Bahman Khameneh ◽  
Bibi Sedigheh Fazly Bazzaz ◽  
Alireza Amani ◽  
Javad Rostami ◽  
Nasser Vahdati-Mashhadian
Keyword(s):  
Staphylococcus Aureus ◽  
Mycobacterium Tuberculosis ◽  
Vitamin C

scholarly journals Autophagy—A Story of Bacteria Interfering with the Host Cell Degradation Machinery

Pathogens ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 110
Author(s):  
Anna K. Riebisch ◽  
Sabrina Mühlen ◽  
Yan Yan Beer ◽  
Ingo Schmitz
Keyword(s):  
Escherichia Coli ◽  
Staphylococcus Aureus ◽  
Immune Response ◽  
Mycobacterium Tuberculosis ◽  
Listeria Monocytogenes ◽  
Salmonella Typhimurium ◽  
Innate Immune ◽  
Intracellular Pathogens ◽  
Response Mechanism ◽  
Pathogenic Escherichia Coli

Autophagy is a highly conserved and fundamental cellular process to maintain cellular homeostasis through recycling of defective organelles or proteins. In a response to intracellular pathogens, autophagy further acts as an innate immune response mechanism to eliminate pathogens. This review will discuss recent findings on autophagy as a reaction to intracellular pathogens, such as Salmonella typhimurium, Listeria monocytogenes, Mycobacterium tuberculosis, Staphylococcus aureus, and pathogenic Escherichia coli. Interestingly, while some of these bacteria have developed methods to use autophagy for their own benefit within the cell, others have developed fascinating mechanisms to evade recognition, to subvert the autophagic pathway, or to escape from autophagy.

scholarly journals Perfil Epidemiológico da Espondilodiscite Tratada Cirurgicamente

2016 ◽  
Vol 29 (5) ◽  
pp. 319 ◽  
Author(s):  
Joaquim Soares do Brito ◽  
António Tirado ◽  
Pedro Fernandes
Keyword(s):  
Staphylococcus Aureus ◽  
Mycobacterium Tuberculosis ◽  
Surgical Treatment ◽  
Epidemiologic Study ◽  
Neurological Impairment ◽  
Tuberculous Infection ◽  
Paravertebral Abscess ◽  
Number Of Patients ◽  
Epidemiological Profile ◽  
Relative Constant

<p><strong>Introduction:</strong> The term spondylodiscitis aims to describe any spinal infection. Medical treatment is the gold standard; nevertheless, surgical treatment can be indicated. The aim of this work was to study the epidemiological profile in a group of patients with spondylodiscitis surgically treated in the same medical institution between 1997 and 2013. <br /><strong>Material and Methods:</strong> Eighty five patients with spondylodiscitis were surgically treated in this period. The authors analysed clinical data and image studies for each patient.<br /><strong>Results:</strong> We treated 51 male and 34 female patients with an average age of 48 years old (min: 6 - max: 80). The lumbar spine was more often affected and <em>Mycobacterium tuberculosis</em> the most frequent pathogen. The number of cases through the years has been grossly stable, with a slight increase of dyscitis due to <em>Staphylococcus aureus</em> and decrease of the dyscitis without pathogen identification. Paravertebral abscess was identified in 39 patients and 17 had also neurological impairment, mostly located in the thoracic spine and with tuberculous aetheology. Immunosuppression was documented in 10 patients. <br /><strong>Discussion:</strong> In this epidemiologic study we found a tuberculous infection, male gender and young age predominance. Despite a relative constant number of patients operated over the years, pyogenic infections due to <em>Staphylococcus aureus</em> seems to be uprising. Paravertebral abscess and neurological impairment are important dyscitis complications, especially in tuberculous cases.<br /><strong>Conclusion:</strong> Spinal infections requiring surgical treatment are still an important clinical condition. <em>Mycobacterium tuberculosis</em> and <em>Staphylococcus aureus</em> represent the main pathogens with a growing incidence for the latest.</p>

scholarly journals Multifaceted remodeling by vitamin C boosts sensitivity of Mycobacterium tuberculosis subpopulations to combination treatment by anti-tubercular drugs

Redox Biology ◽  
2018 ◽  
Vol 15 ◽  
pp. 452-466 ◽  
Author(s):  
Kriti Sikri ◽  
Priyanka Duggal ◽  
Chanchal Kumar ◽  
Sakshi Dhingra Batra ◽  
Atul Vashist ◽  
...  
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Vitamin C ◽  
Combination Treatment

Thioamide Derivative of the Potent Antitubercular 2-(Decylsulfonyl)acetamide is Less Active Against Mycobacterium tuberculosis, but a More Potent Antistaphylococcal Agent

2018 ◽  
Vol 71 (9) ◽  
pp. 716
Author(s):  
Hsien-Kuo Sun ◽  
Angel Pang ◽  
Dylan C. Farr ◽  
Tamim Mosaiab ◽  
Warwick J. Britton ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Mycobacterium Tuberculosis ◽  
Parent Compound ◽  
Gram Positive ◽  
Antibacterial Compounds ◽  
Lawesson’S Reagent ◽  
Lawesson's Reagent ◽  
Structural Simplicity

Due to the prevalence of thioamides in antibacterial compounds, we chose to convert the amide in the antitubercular compound 2-(decylsulfonyl)acetamide to a thioamide using Lawesson’s reagent to study its activity against a range of microorganisms. This derivative (8) had significantly diminished activity against tuberculosis but slightly better activity than the parent compound against the Gram positive species Staphylococcus aureus. This activity against a second major pathogen is remarkable considering the structural simplicity of these compounds.

scholarly journals Vitamin C and Mycobacterium tuberculosis Persisters

2018 ◽  
Vol 62 (11) ◽  
Author(s):  
Wing Wai Yew ◽  
Kwok Chiu Chang ◽  
Chi Chiu Leung ◽  
Denise P. Chan ◽  
Ying Zhang
Keyword(s):  
Mycobacterium Tuberculosis ◽  
Vitamin C

scholarly journals Rapid antibiotic-resistance predictions from genome sequence data for Staphylococcus aureus and Mycobacterium tuberculosis

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Phelim Bradley ◽  
N. Claire Gordon ◽  
Timothy M. Walker ◽  
Laura Dunn ◽  
Simon Heys ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Mycobacterium Tuberculosis ◽  
Sequence Data ◽  
Error Rates ◽  
Graph Representation ◽  
Clinical Samples ◽  
Resistant Bacteria ◽  
Independent Validation ◽  
Validation Set ◽  
Sensitivity Specificity

Abstract The rise of antibiotic-resistant bacteria has led to an urgent need for rapid detection of drug resistance in clinical samples, and improvements in global surveillance. Here we show how de Bruijn graph representation of bacterial diversity can be used to identify species and resistance profiles of clinical isolates. We implement this method for Staphylococcus aureus and Mycobacterium tuberculosis in a software package (‘Mykrobe predictor’) that takes raw sequence data as input, and generates a clinician-friendly report within 3 minutes on a laptop. For S. aureus, the error rates of our method are comparable to gold-standard phenotypic methods, with sensitivity/specificity of 99.1%/99.6% across 12 antibiotics (using an independent validation set, n=470). For M. tuberculosis, our method predicts resistance with sensitivity/specificity of 82.6%/98.5% (independent validation set, n=1,609); sensitivity is lower here, probably because of limited understanding of the underlying genetic mechanisms. We give evidence that minor alleles improve detection of extremely drug-resistant strains, and demonstrate feasibility of the use of emerging single-molecule nanopore sequencing techniques for these purposes.

scholarly journals Acute purulent pericarditis due co-infection with Staphylococcus aureus and Mycobacterium tuberculosis as first manifestation of HIV infection

2019 ◽  
Vol 2019 (2) ◽  
Author(s):  
Edgar Stroppa Lamas ◽  
Ricardo Jose Rogoni Bononi ◽  
Mario Vinicius Angelete Alvarez Bernardes ◽  
Junior Luiz Pasin ◽  
Hector Aurelio Davial Soriano ◽  
...  
Keyword(s):  
Staphylococcus Aureus ◽  
Mycobacterium Tuberculosis ◽  
Hiv Infection ◽  
Purulent Pericarditis
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