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Infection and Drug Resistance

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https://www.readbyqxmd.com/read/29026323/diagnostic-accuracy-of-xpert-mtb-rif-assay-for-musculoskeletal-tuberculosis-a-meta-analysis
#1
REVIEW
Hai Wen, Pengzhi Li, Hong Ma, Guohua Lv
OBJECTIVES: Xpert MTB/RIF assay, a rapid and automated real-time nucleic acid amplification test, has been reported for the diagnosis of musculoskeletal tuberculosis (TB) in current years. This meta-analysis aims to determine the diagnostic accuracy of Xpert for the detection of musculoskeletal TB and rifampicin (RIF) resistance. METHODS: We searched PubMed, Embase, China National Knowledge Infrastructure, and Wanfang for original articles published up to 1st June 2017 to identify studies in which the Xpert assay was applied to diagnose musculoskeletal TB...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28979150/mycoplasma-genitalium-infections-current-treatment-options-and-resistance-issues
#2
REVIEW
Sunil Sethi, Kamran Zaman, Neha Jain
Mycoplasma genitalium is one of the important causes of non-gonococcal urethritis. Rising incidence and emerging antimicrobial resistance are a major concern these days. The poor clinical outcomes with doxycycline therapy led to the use of azithromycin as the primary drug of choice. Single-dose azithromycin regimen over a period of time was changed to extended regimen following studies showing better clinical cures and less risk of resistance development. However, emerging macrolide resistance, either due to transmission of resistance or drug pressure has further worsened the management of this infection...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28919792/clinical-outcomes-and-nephrotoxicity-of-colistin-loading-dose-for-treatment-of-extensively-drug-resistant-acinetobacter-baumannii-in-cancer-patients
#3
Wasan Katip, Suriyon Uitrakul, Peninnah Oberdorfer
BACKGROUND: Colistin is a last-line defense therapy against extensively drug-resistant Acinetobacter baumannii (XDR-AB). Despite a loading dose of colistin being applied in many clinical practices, studies evaluating the effect of the loading dose of colistin in cancer patients remain limited. PATIENTS AND METHODS: A retrospective cohort study of cancer patients who received either a loading or non-loading dose of colistin for treatment of XDR-AB was conducted. For each group, the clinical response, bacteriological eradication and serum creatinine were recorded...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28919791/pegylated-interferon-plus-ribavirin-treatment-does-not-alter-the-prevalence-of-resistance-associated-substitutions-to-direct-acting-antivirals-in-hcv-genotype-1a-patients
#4
Zhi-Wei Chen, Xi-Chen Pang, Zhao Li, Hong Ren, Peng Hu
BACKGROUND: Direct-acting antiviral (DAA) resistance-associated substitutions (RASs) can jeopardize the effectiveness of DAAs in patients with hepatitis C virus (HCV). The selection pressure by pegylated-interferon (Peg-IFN) plus ribavirin (P/R) treatment may enhance HCV genome variation. However, whether P/R treatment alters the rate of change of RASs is still unclear. MATERIALS AND METHODS: We retrieved the genomic sequences of HCV genotype (GT) 1a patients from GenBank, which included patients naïve to P/R (pre-IFN group) and those previously treated with P/R (post-IFN group)...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28919790/exploring-bacterial-outer-membrane-barrier-to-combat-bad-bugs
#5
REVIEW
Ishan Ghai, Shashank Ghai
One of the main fundamental mechanisms of antibiotic resistance in Gram-negative bacteria comprises an effective change in the membrane permeability to antibiotics. The Gram-negative bacterial complex cell envelope comprises an outer membrane that delimits the periplasm from the exterior environment. The outer membrane contains numerous protein channels, termed as porins or nanopores, which are mainly involved in the influx of hydrophilic compounds, including antibiotics. Bacterial adaptation to reduce influx through these outer membrane proteins (Omps) is one of the crucial mechanisms behind antibiotic resistance...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28919789/antifungal-resistance-current-trends-and-future-strategies-to-combat
#6
REVIEW
Nathan P Wiederhold
Antifungal resistance represents a major clinical challenge to clinicians responsible for treating invasive fungal infections due to the limited arsenal of systemically available antifungal agents. In addition current drugs may be limited by drug-drug interactions and serious adverse effects/toxicities that prevent their prolonged use or dosage escalation. Fluconazole resistance is of particular concern in non-Candida albicans species due to the increased incidence of infections caused by these species in different geographic locations worldwide and the elevated prevalence of resistance to this commonly used azole in many institutions...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28860829/erratum-cefazolin-potency-against-methicillin-resistant-staphylococcus-aureus-a-microbiologic-assessment-in-support-of-a-novel-drug-delivery-system-for-skin-and-skin-structure-infections-erratum
#7
(no author information available yet)
[This corrects the article on p. 227 in vol. 10, PMID: 28794647.].
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28814889/fluconazole-resistance-in-candida-species-a-current-perspective
#8
REVIEW
Elizabeth L Berkow, Shawn R Lockhart
Candida albicans and the emerging non-albicans Candida spp. have significant clinical relevance among many patient populations. Current treatment guidelines include fluconazole as a primary therapeutic option for the treatment of these infections, but it is only fungistatic against Candida spp. and both inherent and acquired resistance to fluconazole have been reported. Such mechanisms of resistance include increased drug efflux, alteration or increase in the drug target, and development of compensatory pathways for producing the target sterol, ergosterol...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28814888/frequency-of-colistin-and-fosfomycin-resistance-in-carbapenem-resistant-enterobacteriaceae-from-a-tertiary-care-hospital-in-karachi
#9
Salima Qamar, Najma Shaheen, Sadia Shakoor, Joveria Farooqi, Kauser Jabeen, Rumina Hasan
INTRODUCTION: Management of infections with carbapenem-resistant Enterobacteriaceae (CRE) is challenging. In recent times, agents such as colistin and fosfomycin have been used in combination with other antibiotics to treat such infections. In this study, we aim to seek frequency of colistin and fosfomycin resistance in CRE from Pakistan. METHODS: This study was conducted at clinical laboratories, Aga Khan University Hospital. In total, 251 CRE were included in the study...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28794647/cefazolin-potency-against-methicillin-resistant-staphylococcus-aureus-a-microbiologic-assessment-in-support-of-a-novel-drug-delivery-system-for-skin-and-skin-structure-infections
#10
David P Nicolau, Barry N Silberg
INTRODUCTION: Despite aggressive medical and surgical management, the resolution of skin and skin structure infections is often difficult due to insufficient host response, reduced drug penetration, and a high prevalence of resistance organisms such as methicillin-resistant Staphylococcus aureus (MRSA). As a result of these factors, conventional management often consists of prolonged broad-spectrum systemic antimicrobials. An alternative therapy in development, ultrasonic drug dispersion (UDD), uses a subcutaneous injection followed by external trans-cutaneous ultrasound to deliver high tissue concentrations of cefazolin with limited systemic exposure...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28790857/assessing-the-oseltamivir-induced-resistance-risk-and-implications-for-influenza-infection-control-strategies
#11
Nan-Hung Hsieh, Yi-Jun Lin, Ying-Fei Yang, Chung-Min Liao
BACKGROUND: Oseltamivir-resistant mutants with higher drug resistance rates and low trans-mission fitness costs have not accounted for influenza (sub)type viruses. Predicting the impacts of neuraminidase inhibitor therapy on infection rates and transmission of drug-resistant viral strains requires further investigation. OBJECTIVES: The purpose of this study was to assess the potential risk of oseltamivir-induced resistance for influenza A (H1N1) and A (H3N2) viruses...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28744149/determinants-of-multidrug-resistant-tuberculosis-in-addis-ababa-ethiopia
#12
Demelash Assefa, Berhanu Seyoum, Lemessa Oljira
Multidrug-resistant tuberculosis (MDR-TB) has been jeopardizing the global effort to prevent and control tuberculosis (TB). However, data on MDR-TB in Ethiopia in general, and in our study area in particular, are very scarce. The aim of this study was to identify determinants of MDR-TB in a cohort of patients managed in two referral hospitals of Addis Ababa, Ethiopia, between April 1, 2013 and June 30, 2013. A health facility-based case-control study was conducted. A total of 710 TB patients (229 confirmed MDR-TB and 481 drug susceptible TB patients) were enrolled in this study...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28740410/genotyping-of-hbv-and-tracking-of-resistance-mutations-in-treatment-na%C3%A3-ve-patients-with-chronic-hepatitis-b
#13
Sidelcina Rugieri Pacheco, Maria Isabel Magalhães Andrade Dos Santos, Andreas Stocker, Maria Alice Sant'Anna Zarife, Maria Isabel Schinoni, Raymundo Paraná, Mitermayer Galvão Dos Reis, Luciano Kalabric Silva
BACKGROUND AND AIMS: Resistance mutation analogs to nucleos(t)ides have been described in treatment-naïve patients with chronic hepatitis B (CHB), with clinical implications. The aim of this study was to investigate primary resistance mutations and genotypes circulating in patients naïve to chronic hepatitis B, in the Northern and Northeastern regions of Brazil. METHODS: We conducted a study of resistance mutations and genotypic characterization of hepatitis B virus (HBV) in 189 treatment-naïve patients chronically infected with HBV...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28721078/incomplete-recovery-of-the-fecal-flora-of-hematological-patients-with-neutropenia-and-repeated-fluoroquinolone-prophylaxis
#14
Yong Chong, Shinji Shimoda, Noriko Miyake, Takatoshi Aoki, Yoshikiyo Ito, Tomohiko Kamimura, Nobuyuki Shimono
BACKGROUND: Routine fluoroquinolone prophylaxis in neutropenic patients with hematological malignancies is still controversial, because of antibiotic resistance concerns. The recovery of the fecal microbiota to the initial composition in patients receiving multiple courses of quinolone prophylaxis and repeated chemotherapy has not been evaluated. METHODS: We prospectively examined the changes in the fecal bacterial composition before and after levofloxacin prophylaxis...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28706448/genotypic-distribution-of-multidrug-resistant-and-extensively-drug-resistant-tuberculosis-in-northern-thailand
#15
Risara Jaksuwan, Prasit Tharavichikul, Jayanton Patumanond, Charoen Chuchottaworn, Sakarin Chanwong, Saijai Smithtikarn, Jongkolnee Settakorn
BACKGROUND: Multidrug/extensively drug-resistant tuberculosis (M/XDR-TB) is a major public health problem, and early detection is important for preventing its spread. This study aimed to demonstrate the distribution of genetic site mutation associated with drug resistance in M/XDR-TB in the northern Thai population. METHODS: Thirty-four clinical MTB isolates from M/XDR-TB patients in the upper northern region of Thailand, who had been identified for drug susceptibility using the indirect agar proportion method from 2005 to 2012, were examined for genetic site mutations of katG, inhA, and ahpC for isoniazid (INH) drug resistance and rpoB for rifampicin (RIF) drug resistance...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28706447/treatment-patterns-resource-utilization-and-outcomes-among-hospitalized-patients-with-methicillin-resistant-staphylococcus-aureus-complicated-skin-and-soft-tissue-infections-in-lebanon-and-saudi-arabia
#16
Madonna J Matar, Rima Moghnieh, Adel F Alothman, Abdulhakeem O Althaqafi, Thamer H Alenazi, Fayssal M Farahat, Shelby Corman, Caitlyn T Solem, Nirvana Raghubir, Cynthia Macahilig, Seema Haider, Jennifer M Stephens
OBJECTIVES: To describe treatment patterns and medical resource use for methicillin-resistant Staphylococcus aureus (MRSA) complicated skin and soft tissue infections (cSSTI) in Saudi Arabia and Lebanon in terms of drug selection against the infecting pathogen as well as hospital resource utilization and clinical outcomes among patients with these infections. METHODS: This retrospective chart review study evaluated 2011-2012 data from five hospitals in Saudi Arabia and Lebanon...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28652786/rifampicin-resistant-mycobacterium-tuberculosis-among-tuberculosis-presumptive-cases-at-university-of-gondar-hospital-northwest-ethiopia
#17
Kefyalew N Jaleta, Mucheye Gizachew, Baye Gelaw, Habtie Tesfa, Alem Getaneh, Belete Biadgo
BACKGROUND: Various studies have reported that the emergence of drug-resistant tuberculosis poses a significant threat to tuberculosis-control programs worldwide. Rifampicin resistance is a surrogate marker of multidrug-resistant tuberculosis, since it reveals the presence of greater than 90% isoniazid resistance. Evidence on rifampicin-resistant Mycobacterium tuberculosis is scarce in the literature. OBJECTIVE: To determine the prevalence of rifampicin-resistant M...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28652785/prevalence-and-antibiotic-resistance-of-coagulase-negative-staphylococci-isolated-from-poultry-farms-in-three-regions-of-ghana
#18
Vivian Etsiapa Boamah, Christian Agyare, Hayford Odoi, Francis Adu, Stephen Yao Gbedema, Anders Dalsgaard
The use of antibiotics in animal production has been associated with the development and spread of antibiotic-resistant organisms including commensals. Coagulase-negative Staphylococcus (CoNS) species, which were until recently considered non-pathogenic, have been associated with opportunistic infections and high resistance to several antibiotics. This study sought to determine the prevalence, identity, and phenotypic resistance of coagulase-negative Staphylococcus spp. isolated from some selected poultry farms and farm workers in the Ashanti, Brong Ahafo, and Greater Accra regions of Ghana...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28652784/current-perspective-on-emergence-diagnosis-and-drug-resistance-in-candida-auris
#19
REVIEW
Smita Sarma, Shalini Upadhyay
Candida auris is an emerging fungus that presents a serious threat to global health. The organism is difficult to identify using conventional biochemical methods. C. auris has also attracted attention because of its reduced susceptibility to azoles, polyenes, and echinocandins, with a few strains even resistant to all three classes of antifungals. In this review paper we discuss the trends in emergence of C. auris in different parts of the world, associated risk factors, drug resistance, and diagnostic challenges...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28533691/microbiome-disruption-and-recovery-in-the-fish-gambusia-affinis-following-exposure-to-broad-spectrum-antibiotic
#20
Jeanette M Carlson, Annie B Leonard, Embriette R Hyde, Joseph F Petrosino, Todd P Primm
Antibiotics are a relatively common disturbance to the normal microbiota of humans and agricultural animals, sometimes resulting in severe side effects such as antibiotic-associated enterocolitis. Gambusia affinis was used as a vertebrate model for effects of a broad-spectrum antibiotic, rifampicin, on the skin and gut mucosal microbiomes. The fish were exposed to the antibiotic in the water column for 1 week, and then monitored during recovery. As observed via culture, viable counts from the skin microbiome dropped strongly yet returned to pretreatment levels by 1...
2017: Infection and Drug Resistance
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