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https://www.readbyqxmd.com/read/28203096/burden-of-methicillin-resistant-staphylococcus-aureus-pneumonia-among-hospitalized-patients-in-lebanon-and-saudi-arabia
#1
Abdulhakeem O Althaqafi, Madonna J Matar, Rima Moghnieh, Adel F Alothman, Thamer H Alenazi, Fayssal Farahat, Shelby Corman, Caitlyn T Solem, Nirvana Raghubir, Cynthia Macahilig, Seema Haider, Jennifer M Stephens
OBJECTIVES: The objective of this study is to describe the real-world treatment patterns and burden of suspected or confirmed methicillin-resistant Staphylococcus aureus (MRSA) pneumonia in Saudi Arabia and Lebanon. METHODS: A retrospective chart review study evaluated 2011-2012 data from hospitals in Saudi Arabia and Lebanon. Patients were included if they had been discharged with a diagnosis of MRSA pneumonia, which was culture proven or suspected based on clinical criteria...
2017: Infection and Drug Resistance
https://www.readbyqxmd.com/read/28195616/clinical-features-and-management-of-subretinal-abscesses-secondary-to-methicillin-resistant-staphylococcus-aureus-endogenous-endophthalmitis
#2
Jorge Fortun, Yasha S Modi, Angela Bessette, Jordan Heffez, Petros Carvounis, Daniel S Petkovsek, Nicholas G Anderson, Daniel Martin, Sunil Srivastava
BACKGROUND AND OBJECTIVE: To describe the clinical features, management, and immediate outcomes of patients with subretinal abscesses secondary to methicillin-resistant Staphylococcus aureus (MRSA) endogenous endophthalmitis. PATIENTS AND METHODS: Eleven eyes of seven patients were identified by retrospective chart review. Demographics, initial presentation, examination findings, imaging, cultures, treatments, and short-term outcomes were reviewed. RESULTS: Eleven eyes of seven patients presented with subretinal abscesses secondary to MRSA endogenous endophthalmitis...
February 1, 2017: Ophthalmic Surgery, Lasers & Imaging Retina
https://www.readbyqxmd.com/read/28186134/virulence-inhibitors-from-brazilian-peppertree-block-quorum-sensing-and-abate-dermonecrosis-in-skin-infection-models
#3
Amelia Muhs, James T Lyles, Corey P Parlet, Kate Nelson, Jeffery S Kavanaugh, Alexander R Horswill, Cassandra L Quave
Widespread antibiotic resistance is on the rise and current therapies are becoming increasingly limited in both scope and efficacy. Methicillin-resistant Staphylococcus aureus (MRSA) represents a major contributor to this trend. Quorum sensing controlled virulence factors include secreted toxins responsible for extensive damage to host tissues and evasion of the immune system response; they are major contributors to morbidity and mortality. Investigation of botanical folk medicines for wounds and infections led us to study Schinus terebinthifolia (Brazilian Peppertree) as a potential source of virulence inhibitors...
February 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28184157/silver-loaded-nanotubular-structures-enhanced-bactericidal-efficiency-of-antibiotics-with-synergistic-effect-in-vitro-and-in-vivo
#4
Na Xu, Hao Cheng, Jiangwen Xu, Feng Li, Biao Gao, Zi Li, Chenghao Gao, Kaifu Huo, Jijiang Fu, Wei Xiong
Antibiotic-resistant bacteria have become a major issue due to the long-term use and abuse of antibiotics in treatments in clinics. The combination therapy of antibiotics and silver (Ag) nanoparticles is an effective way of both enhancing the antibacterial effect and decreasing the usage of antibiotics. Although the method has been proved to be effective in vitro, no in vivo tests have been carried out at present. Herein, we described a combination therapy of local delivery of Ag and systemic antibiotics treatment in vitro in an infection model of rat...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28179010/characterization-and-complete-genome-of-the-virulent-myoviridae-phage-jd007-active-against-a-variety-of-staphylococcus-aureus-isolates-from-different-hospitals-in-shanghai-china
#5
Zelin Cui, Tingting Feng, Feifei Gu, Qingtian Li, Ke Dong, Yan Zhang, Yongzhang Zhu, Lizhong Han, Jinhong Qin, Xiaokui Guo
BACKGROUND: The implementation of phage therapy is re-emerging with the increase in widespread antibiotic-resistant bacteria. METHODS: Staphylococcus phage JD007 was characterized and its complete genome sequence analysed. RESULTS: Staphylococcus phage JD007 was classified as belonging to the Myoviridae family based on its morphology, as observed by transmission electron microscopy. Its lytic activity was stable between pH 5-11 and below 42 °C; moreover, an absorbance curve showed that nearly 90% of the viral particles had adsorbed to its host after a 20 min co-incubation...
February 8, 2017: Virology Journal
https://www.readbyqxmd.com/read/28167543/carbapenem-minimal-inhibitory-concentrations-in-escherichia-coli-and-klebsiella-species-producing-extended-spectrum-beta-lactamases-esbls-in-critical-care-patients-from-2001-2009
#6
J Kristie Johnson, Gwen L Robinson, Lisa L Pineles, Adebola O Ajao, LiCheng Zhao, Jennifer S Albrecht, Anthony D Harris, Kerri A Thom, Jon P Furuno
Extended spectrum β-lactamase (ESBL) -producing Enterobacteriaceae are increasing in prevalence worldwide. Carbapenem antibiotics are used as a first line of therapy against ESBL-producing Enterobacteriaceae. We examined gastrointestinal colonization of carbapenem-resistant-ESBLs (CR-ESBL) among a cohort of critical care patients. In this cohort of patients, we cultured for ESBL-producing Klebsiella spp. and Escherichia coli and then performed MIC susceptibility testing for imipenem, doripenem, meropenem, and ertapenem on the patient's first isolate...
February 6, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28165033/micheliolide-provides-protection-of-mice-against-staphylococcus-aureus-and-mrsa-infection-by-down-regulating-inflammatory-response
#7
Xinru Jiang, Yuli Wang, Yifei Qin, Weigang He, Adel Benlahrech, Qingwen Zhang, Xin Jiang, Zhenhui Lu, Guang Ji, Yuejuan Zheng
A major obstacle to therapy in intensive care units is sepsis caused by severe infection. In recent years gram-positive (G(+)) bacteria, most commonly staphylococci, are thought to be the main pathogens. Micheliolide (MCL) was demonstrated to provide a therapeutic role in rheumatoid arthritis, inflammatory intestinal disease, colitis-associated cancer, and lipopolysaccharide (LPS, the main component of G(-) bacterial cell wall) induced septic shock. We proved here that MCL played an anti-inflammatory role in Staphylococcus aureus (S...
February 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28163229/photosensitizer-eluting-nanofibers-for-enhanced-photodynamic-therapy-of-wounds-a-preclinical-study-in-immunocompromized-rats
#8
Labiba El-Khordagui, Nesma El-Sayed, Sally Galal, Hanan El-Gowelli, Hoda Omar, Moustafa Mohamed
Electrospun nanofibers (NFs) as drug delivery/tissue regeneration template and antimicrobial photodynamic therapy (APDT) have been widely investigated as two different approaches to enhance wound healing. In the present study, the two approaches were combined in a single platform for greater healing enhancement potentials. Composite photosensitizer-eluting NFs were developed using a polyhydrohybutyrate/polyethylene glycol (60:40 PHB/PEG) polymer blend and methylene blue (MB) as antimicrobial photosensitizer (PS)...
February 3, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28162098/the-effect-of-universal-decolonization-with-screening-in-critical-care-to-reduce-mrsa-across-an-entire-hospital
#9
Craig W Bradley, Martyn A C Wilkinson, Mark I Garvey
OBJECTIVE To describe the effect of universal methicillin-resistant Staphylococcus aureus (MRSA) decolonization therapy in a large intensive care unit (ICU) on the rates of MRSA cases and acquisitions in a UK hospital. DESIGN Descriptive study. SETTING University Hospitals Birmingham (UHB) NHS Foundation Trust is a tertiary referral teaching hospital in Birmingham, United Kingdom, that provides clinical services to nearly 1 million patients every year. METHODS A break-point time series analysis and kernel regression models were used to detect significant changes in the cumulative monthly numbers of MRSA bacteremia cases and acquisitions from April 2013 to August 2016 across the UHB system...
February 6, 2017: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/28155918/surface-mediated-cooperative-interactions-of-drugs-enhance-mechanical-forces-for-antibiotic-action
#10
Joseph W Ndieyira, Joe Bailey, Samadhan B Patil, Manuel Vögtli, Matthew A Cooper, Chris Abell, Rachel A McKendry, Gabriel Aeppli
The alarming increase of pathogenic bacteria that are resistant to multiple antibiotics is now recognized as a major health issue fuelling demand for new drugs. Bacterial resistance is often caused by molecular changes at the bacterial surface, which alter the nature of specific drug-target interactions. Here, we identify a novel mechanism by which drug-target interactions in resistant bacteria can be enhanced. We examined the surface forces generated by four antibiotics; vancomycin, ristomycin, chloroeremomycin and oritavancin against drug-susceptible and drug-resistant targets on a cantilever and demonstrated significant differences in mechanical response when drug-resistant targets are challenged with different antibiotics although no significant differences were observed when using susceptible targets...
February 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28153582/changing-trends-in-antimicrobial-susceptibility-pattern-of-bacterial-isolates-in-a-burn-unit
#11
Narendra Pal Singh, Mayuri Rani, Kavita Gupta, Tanu Sagar, Iqbal Rajinder Kaur
INTRODUCTION: Emerging antimicrobial resistance in nosocomial bacterial isolates, limits the available treatment options for burn wound infections, among them multi-drug resistant Gram negative bacteria and methicillin-resistant Staphylococcus aureus (MRSA) are major contributors to the increase in morbidity and mortality rates. MATERIAL AND METHODS: A retrospective cross-sectional study was done in the Department of Microbiology, University College of Medical Sciences & Guru Teg Bahadur Hospital, Delhi...
January 30, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28149024/extremely-high-ferritinemia-associated-with-haemophagocytic-lympho-histiocytosis-hlh
#12
Neelima Verma, Jyoti Chakraverty, Pankaj Baweja, Alka Girotra, Leena Chatterjee, Manish Chugh
Hyperferritinemia (>10,000 ng/ml) is an important hallmark used as an indicator of infection triggered macrophage activation syndrome leading to hemophagocytic lympho histiocytosis (HLH). Measurement of serum ferritin can be used in diagnosis as well as disease monitoring indicator and prognosis related to HLH, cAPS, sepsis, neoplasm and inflammatory conditions. It is a major contributor to manage critically ill patients as predicting and monitoring indicator. It can be used as acute phase response in conditions of MAS, AOSD, cAPS etc...
March 2017: Indian Journal of Clinical Biochemistry: IJCB
https://www.readbyqxmd.com/read/28145860/synergistic-antibacterial-effect-of-apigenin-with-%C3%AE-lactam-antibiotics-and-modulation-of-bacterial-resistance-by-a-possible-membrane-effect-against-methicillin-resistant-staphylococcus-aureus
#13
K Akilandeswari, K Ruckmani
Methicillin-resistant Staphylococcus aureus (MRSA) infections are easily spread among infected patients, where resistance has dramatically increased resulted in serious health issues. Therefore, there is a need to develop alternative natural or combination drug therapies. Apigenin (AP) is a natural poly phenolic flavonoid has been found to possess many beneficial biological actions. The aim of this study was to investigate the anti-MRSA efficacy and synergistic effect of apigenin (AP) and in combination with ampicillin (AM) and ceftriaxone (CEF)...
December 30, 2016: Cellular and Molecular Biology
https://www.readbyqxmd.com/read/28137813/nasal-mrsa-pcr-testing-reduces-duration-of-mrsa-targeted-therapy-in-patients-with-suspected-mrsa-pneumonia
#14
Nidhu Baby, Andrew C Faust, Terri Smith, Lyndsay A Sheperd, Laura Knoll, Edward L Goodman
OBJECTIVE: To evaluate the impact of pharmacist-ordered MRSA PCR testing on the duration of empiric MRSA-targeted antibiotic therapy in patients with suspected pneumonia. METHODS: This is a retrospective analysis of patients who received vancomycin or linezolid for suspected pneumonia before and after the implementation of a pharmacist-driven protocol for nasal MRSA PCR testing. Patients were included if they were adults >18 years of age and initiated on vancomycin or linezolid for suspected MRSA pneumonia...
January 30, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28134677/are-there-any-reasons-to-change-our-behavior-in-necrotizing-fasciitis-with-the-advent-of-new-antibiotics
#15
Francesco Menichetti, Simone Giuliano, Simona Fortunato
PURPOSE OF REVIEW: The treatment of necrotizing fasciitis requires a multifaceted approach, consisting of surgical source control with immediate surgical debridement along with life support, clinical monitoring, and antimicrobial therapy. Many drugs are now available for the treatment of this life-threatening infectious disease, and the purpose of this review is to provide the reader with an updated overview of the newest therapeutic options. RECENT FINDINGS: Because most necrotizing soft tissue infections are polymicrobial, broad-spectrum coverage is advisable...
January 27, 2017: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/28131729/ceftaroline-fosamil-monotherapy-for-methicillin-resistant-staphylococcus-aureus-bacteremia-a-comparative-clinical-outcomes-study
#16
Samia Arshad, Vanthida Huang, Pamela Hartman, Mary B Perri, Daniela Moreno, Marcus J Zervos
OBJECTIVES: Vancomycin is the treatment of choice for methicillin-resistant Staphylococcus aureus (MRSA) bacteremia; however, its use has been subject to scrutiny due to failure in severe infections. Ceftaroline fosamil (CPT-F) is approved for MRSA acute bacterial skin and skin structure infections, but not for bloodstream infections. The clinical outcomes of treatment with CPT-F in patients with MRSA bacteremia were evaluated. METHODS: Patients diagnosed with MRSA bacteremia at Henry Ford Hospital in Detroit, Michigan, USA, involving isolates with a vancomycin minimum inhibitory concentration ≥1...
January 25, 2017: International Journal of Infectious Diseases: IJID
https://www.readbyqxmd.com/read/28124815/dual-fluorescent-and-isotopic-labelled-self-assembling-vancomycin-for-in%C3%A2-vivo-imaging-of-bacterial-infections
#17
Cuihong Yang, Chunhua Ren, Jie Zhou, Jinjian Liu, Yumin Zhang, Fan Huang, Dan Ding, Bing Xu, Jianfeng Liu
The increase of bacterial resistance demands rapid and accurate diagnosis of bacterial infections. Biosurface-induced supramolecular assembly for diagnosis and therapy has received little attention in detecting bacterial infections. Herein we present a dual fluorescent-nuclear probe based on self-assembly of vancomycin (Van) on Gram-positive bacteria for imaging bacterial infection. A Van- and rhodamine-modified peptide derivative (Rho-FF-Van), as the imaging agent, binds to the terminal peptide of the methicillin-resistant staphylococcus aureus (MRSA) and self-assembles to form nanoaggregates on the surface of MRSA...
January 26, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28118725/synergistic-antibacterial-effects-of-herbal-extracts-and-antibiotics-on-methicillin-resistant-staphylococcus-aureus-a-computational-and-experimental-study
#18
Chiu-Fai Kuok, Sai-On Hoi, Chi-Fai Hoi, Chi-Hong Chan, Io-Hong Fong, Cheong-Kei Ngok, Li-Rong Meng, Pedro Fong
Antibiotic resistance has become a serious global concern, and the discovery of antimicrobial herbal constituents may provide valuable solutions to overcome the problem. In this study, the effects of therapies combining antibiotics and four medicinal herbs on methicillin-resistant Staphylococcus aureus (MRSA) were investigated. Specifically, the synergistic effects of Magnolia officinalis, Verbena officinalis, Momordica charantia, and Daphne genkwa in combination with oxacillin or gentamicin against methicillin-resistant (ATCC43300) and methicillin-susceptible (ATCC25923) S...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28116950/a-combination-of-ceftaroline-and-daptomycin-has-synergistic-and-bactericidal-activity-in-vitro-against-daptomycin-nonsusceptible-methicillin-resistant-staphylococcus-aureus-mrsa
#19
Iffat Shafiq, Zackery P Bulman, Sarah L Spitznogle, Justin E Osorio, Irene S Reilly, Alan J Lesse, Ganapathi I Parameswaran, Kari A Mergenhagen, Brian T Tsuji
There is an urgent need to optimize therapeutic options in patients with methicillin-resistant Staphylococcus aureus (MRSA) bacteremia who have failed conventional therapy. Two clinical isolates were obtained from a 68-year-old male with persistent MRSA bacteremia before and after the development of daptomycin nonsusceptibility. The pharmacodynamic activity of monotherapies and combinations of ceftaroline, daptomycin, cefoxitin, nafcillin and vancomycin were evaluated in time-kill experiments versus 10(8) CFU/mL of the pre- and post-daptomycin nonsusceptible MRSA isolates...
January 24, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28114965/synergistic-antibacterial-effect-of-co-administering-adipose-derived-mesenchymal-stromal-cells-and-ophiophagus-hannah-l-amino-acid-oxidase-in-a-mouse-model-of-methicillin-resistant-staphylococcus-aureus-infected-wounds
#20
Yee Yik Mot, Iekhsan Othman, Syed Hassan Sharifah
BACKGROUND: Mesenchymal stromal cells (MSCs) and Ophiophagus hannah L-amino acid oxidase (Oh-LAAO) have been reported to exhibit antimicrobial activity against methicillin-resistant Staphylococcus aureus (MRSA). Published data have indicated that synergistic antibacterial effects could be achieved by co-administration of two or more antimicrobial agents. However, this hypothesis has not been proven in a cell- and protein-based combination. In this study, we investigate if co-administration of adipose-derived MSCs and Oh-LAAO into a mouse model of MRSA-infected wounds would be able to result in a synergistic antibacterial effect...
January 23, 2017: Stem Cell Research & Therapy
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