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https://www.readbyqxmd.com/read/29346493/antimicrobial-studies-using-the-therapeutic-tissue-cross-linking-agent-sodium-hydroxymethylglycinate-implication-for-treating-infectious-keratitis
#1
Patrick B Rapuano, Alexandra H Scanameo, Daeryl E Amponin, Sefy A Paulose, Mariya Zyablitskaya, Anna Takaoka, Leejee H Suh, Takayuki Nagasaki, Stephen L Trokel, David C Paik
Purpose: Our recent studies raise the possibility of using sodium hydroxymethylglycinate (SMG), for pharmacologic therapeutic tissue cross-linking (TXL) of the cornea. The present study was performed to evaluate the antimicrobial effects of SMG for potential use in treating infectious keratitis. Methods: In initial (group 1) experiments, methicillin-sensitive Staphylococcus aureus (MSSA), methicillin-resistant Staphylococcus aureus (MRSA), and Pseudomonas aeruginosa (PA) were treated with SMG (10-40 mM) for 10 to 120 minutes...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29346119/the-role-of-tedizolid-in-skin-and-soft-tissue-infections
#2
Emilio Bouza, Patricia Muñoz, Almudena Burillo
PURPOSE OF REVIEW: Tedizolid is a second-generation oxazolidinone with activity against Gram-positive bacteria, including MRSA isolates resistant to linezolid. Pivotal clinical trials showed that tedizolid at 200 mg once-daily for 6 days is not inferior to linezolid 600 mg twice daily for 10 days in patients with SSTI. The comparison of adverse events is favorable to tedizolid under the circumstances of the clinical trials. This is a review of recent literature on tedizolid, its use in special populations and potential adverse effects...
January 15, 2018: Current Opinion in Infectious Diseases
https://www.readbyqxmd.com/read/29345345/autophagy-inhibition-promotes-phagocytosis-of-macrophage-and-protects-mice-from-methicillin-resistant-staphylococcus-aureus-pneumonia
#3
Yulin Zhu, Huichun Li, Shenggang Ding, Yating Wang
OBJECTIVE: To investigate the effect of autophagy in macrophages and the protection of mouse models against MRSA invasion, which provide new potential therapeutic direction for lung infection. METHODS: The effect of ST239 in macrophages were analyzed by western blot and immunofluorescence to observe the influence of autophagy inhibitor 3-MA in macrophages. Then we established MRSA mice model and the models were divided into different groups of drugs. As well as analyzed the effect of autophagy in macrophage with MRSA and the changes of lung pathological in the mouse model by flow cytometry and immunohistochemistry...
January 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29344094/robotic-prostatectomy-leading-to-a-delayed-mrsa-infected-lymphocele-a-case-report-and-review-of-the-literature
#4
Monica Kaminski, Rose Recco, Steven Siegel
Prostate cancer is the second leading cancer-related cause of death in the USA with the majority presenting as localized disease. In the last decade minimally invasive, robotic-assisted laparascopic, radical prostatectomy has become the most favored treatment choice. A complication that has been observed in 27% of patients is the formation of an asymptomatic lymphocele. It is a very rare complication for these to become infected, and when they do 80% have occurred 2-12 months post-procedure. In this case report the patient presented with fever and leukocytosis of unknown origin and was found to have a methicillin-resistant Staphylococcus aureus (MRSA) infected lymphocele over 2 years after a radical prostatectomy...
January 2018: Therapeutic Advances in Urology
https://www.readbyqxmd.com/read/29343625/methicillin-resistant-staphylococcus-aureus-causes-sustained-collecting-lymphatic-vessel-dysfunction
#5
Dennis Jones, Eelco F J Meijer, Cedric Blatter, Shan Liao, Ethel R Pereira, Echoe M Bouta, Keehoon Jung, Shan Min Chin, Peigen Huang, Lance L Munn, Benjamin J Vakoc, Michael Otto, Timothy P Padera
Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of morbidity and mortality worldwide and is a frequent cause of skin and soft tissue infections (SSTIs). Lymphedema-fluid accumulation in tissue caused by impaired lymphatic vessel function-is a strong risk factor for SSTIs. SSTIs also frequently recur in patients and sometimes lead to acquired lymphedema. However, the mechanism of how SSTIs can be both the consequence and the cause of lymphatic vessel dysfunction is not known. Intravital imaging in mice revealed an acute reduction in both lymphatic vessel contractility and lymph flow after localized MRSA infection...
January 17, 2018: Science Translational Medicine
https://www.readbyqxmd.com/read/29343421/frequency-of-small-colony-variants-and-antimicrobial-susceptibility-of-methicillin-resistant-staphylococcus-aureus-in-cystic-fibrosis-patients
#6
Nuntra Suwantarat, Mayer Rubin, Latetia Bryan, Tsigereda Tekle, Michael P Boyle, Karen C Carroll, Mark T Jennings
BACKGROUND: Small-colony variants (SCVs) are a distinct phenotype of Staphylococcus aureus, known for their role in chronic, difficult to treat infections, including cystic fibrosis (CF) lung disease. The goal of this study was to characterize SCV MRSA infection in an adult and pediatric CF population and to identify antibiotic susceptibility patterns unique to SCV MRSA. METHODS: We recovered methicillin-resistant S. aureus (MRSA) from respiratory culture samples from CF patients at the Johns Hopkins Hospital during a 6month study period...
December 2, 2017: Diagnostic Microbiology and Infectious Disease
https://www.readbyqxmd.com/read/29342994/-report-of-antimicrobial-resistance-surveillance-program-in-chinese-children-in-2016
#7
C Q Wang, A M Wang, H Yu, H M Xu, C M Jing, J K Deng, R Z Zhao, C Z Hua, Y H Chen, X J Chen, T Zhang, H Zhang, Y P Chen, J G Yang, A W Lin, S F Wang, Q Cao, X Wang, H L Deng, S C Cao, J H He, W Gao, S Z Han
Objective: To analyze the antimicrobial resistance profile in Chinese children. Methods: This was a prevalence survey. From January 1 through December 31, 2016, the isolates were collected from 10 tertiary children hospitals in China. Antimicrobial susceptibility testing was carried out by routine laboratory methods. The penicillin susceptibility of streptococcus pneumonia and Meropenem susceptibility of gram-negative bacteria were detected by E-test and disk diffusion method respectively. Antimicrobial susceptibility results were interpreted according to the criteria of Clinical and Laboratory Standards Institute (CLSI) Guideline 2016...
January 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/29342216/in-vitro-activity-of-novel-glycopolymer-against-clinical-isolates-of-multidrug-resistant-staphylococcus-aureus
#8
Vidya P Narayanaswamy, Scott A Giatpaiboon, John Uhrig, Paul Orwin, William Wiesmann, Shenda M Baker, Stacy M Townsend
The incidence of multidrug-resistant (MDR) organisms, including methicillin-resistant Staphylococcus aureus (MRSA), is a serious threat to public health. Progress in developing new therapeutics is being outpaced by antibiotic resistance development, and alternative agents that rapidly permeabilize bacteria hold tremendous potential for treating MDR infections. A new class of glycopolymers includes polycationic poly-N (acetyl, arginyl) glucosamine (PAAG) is under development as an alternative to traditional antibiotic strategies to treat MRSA infections...
2018: PloS One
https://www.readbyqxmd.com/read/29341172/statin-use-and-the-risk-of-cardiovascular-implantable-electronic-device-infection-a-cohort-study-in-a-veteran-population
#9
Talal Alzahrani, Angelike P Liappis, Larry M Baddour, Pamela E Karasik
BACKGROUND: The rate of cardiovascular implantable electronic device infection (CIEDI) has increased, despite the use of perioperative antibiotics at the time of device placement or revision. This is due, in part, to the presence of multiple comorbid conditions in an elderly population, in general, who require CIED. Statins may have an antibacterial effect, although there is currently no evidence that the likelihood of CIEDI has been impacted by statin use. METHODS: A retrospective cohort study was performed to assess whether statins are associated with a reduced risk of CIEDI...
January 17, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29340593/the-clinical-utility-of-methicillin-resistant-staphylococcus-aureus-mrsa-nasal-screening-to-rule-out-mrsa-pneumonia-a-diagnostic-meta-analysis-with-antimicrobial-stewardship-implications
#10
Diane M Parente, Cheston B Cunha, Eleftherios Mylonakis, Tristan T Timbrook
Background: Recent literature has highlighted MRSA nasal screening as a possible antimicrobial stewardship program (ASP) tool for avoiding unnecessary empiric MRSA therapy for pneumonia, yet current guidelines recommend MRSA therapy based on risk factors. The objective of this meta-analysis was to evaluate the diagnostic value of MRSA nasal screening in MRSA pneumonia. Methods: Pubmed and EMBASE were searched from inception to November 2016 for English studies evaluating MRSA nasal screening and development of MRSA pneumonia...
January 11, 2018: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/29340463/prevalence-of-and-risk-factors-associated-with-the-presence-of-staphylococcus-aureus-in-the-chronic-wounds-of-patients-treated-in-primary-health-care-settings-in-brazil
#11
Eliane Patricia Lino Pereira-Franchi, Maria Rachel Nogueira Barreira, Natália de Sousa Lima Moreira da Costa, Carlos Magno Castelo Branco Fortaleza, Maria de Lourdes Ribeiro de Souza da Cunha
INTRODUCTION: Wounds can be colonized by methicillin-resistant Staphylococcus aureus (MRSA). METHODS: We evaluated the prevalence of S. aureus and MRSA in the wounds of patients treated at Basic Health Units in Brazil and identified risk factors associated with their presence. RESULTS: The prevalence rates of S. aureus and MRSA were 51.5% and 8.7%, respectively. There was a correlation between the presence of S. aureus in wounds and nostrils (p<0...
November 2017: Revista da Sociedade Brasileira de Medicina Tropical
https://www.readbyqxmd.com/read/29338435/three-new-diphenyl-ether-derivatives-from-the-fermentation-products-of-an-endophytic-fungus-phomopsis-fukushii
#12
Yu-Hong Gao, Rui Zheng, Jing Li, Wei-Song Kong, Xin Liu, Lin Ye, Qi-Li Mi, Wei-Song Kong, Min Zhou, Guang-Yu Yang, Qiu-Fen Hu, Gang Du, Hai-Ying Yang, Xue-Mei Li
Three new diphenyl ethers (1-3), together with four known isopentylated diphenyl ethers derivatives (4-7), were isolated from the fermentation products of an endophytic fungus Phomopsis fukushii. Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1-3 were evaluated for their anti-methicillin-resistant Staphylococcus aureus (anti-MRSA) activity. The results revealed that compounds 1 and 2 showed strong inhibitions with inhibition zone diameters (IZD) of 20...
January 17, 2018: Journal of Asian Natural Products Research
https://www.readbyqxmd.com/read/29337085/disc-describing-infections-of-the-spine-treated-with-ceftaroline
#13
Richard R Watkins, George Yendewa, Steven D Burdette, Sophia Horattas, Nairmeen Awad Haller, Caroline Mangira, Robert A Salata, Robert A Bonomo
OBJECTIVES: Spine infections lead to considerable morbidity and high cost to the global health care system. Currently, the evidence for using ceftaroline, an advanced-generation cephalosporin active against methicillin-resistant Staphylococcus aureus (MRSA), in spine infections is limited. METHODS: Describing Infections of the Spine treated with Ceftaroline (DISC) is a multicenter retrospective cohort study that evaluated ceftaroline for treating spine infections...
January 11, 2018: Journal of Global Antimicrobial Resistance
https://www.readbyqxmd.com/read/29336909/-non-reported-spa-types-in-our-country-in-staphylococcus-aureus-from-adult-patients-of-a-school-hospital-santa-fe-argentina
#14
Carla Tomatis, María R Baroni, María A Mendosa, Alicia Nagel, Analia Mollerach, Claudia Alvarez, Maria Laura Zurbriggen, Sabrina Cristobal, Glenda Segovia, Emilce de Los A Méndez
Staphylococcus aureus is a pathogen associated a different kind of infection. Molecular markers are useful tools to study microbial epidemiology. Twenty two methicillin-resistant S. aureus (MRSA) and 23 methicillin-susceptible S. aureus (MSSA) were studied by mecA gene, SCCmec cassette, Panton Valentine leucocidin (PVL) and spa polymorphism. The clinical data patients were analyzed. MSSA was prevalent in samples different from skin and soft tissue (SST) and in hospitalized patients, whereas MRSA in SST. SCCmec type IV was predominant, followed by type I...
January 11, 2018: Revista Argentina de Microbiología
https://www.readbyqxmd.com/read/29336763/methicillin-resistant-staphylococcus-aureus-in-a-trauma-population-does-decolonization-prevent-infection
#15
Robert A Maxwell, Chasen A Croft, C Buddy Creech, Isaac Thomsen, Nicole Soper, Laura E Brown, Vicente A Mejia, Benjamin W Dart, Donald E Barker
The purpose of this study was to determine if a decolonization regimen reduces the frequency of methicillin-resistant Staphylococcus aureus (MRSA) infections and if colonization isolates are genetically related to subsequent infectious strains. Trauma patients admitted to the intensive care unit with positive MRSA nasal swabs were randomized to either daily chlorhexidine gluconate (CHG) baths and mupirocin (MUP) ointment to the nares or soap and water baths and placebo ointment for five days. Nasal swabs performed at the end of treatment and invasive MRSA infections during the remaining hospitalization were compared with the original nasal isolate via polymerase chain reaction for genetic relatedness as well as CHG and MUP resistance genes...
December 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/29333818/community-acquired-methicillin-resistant-staphylococcus-aureus-infections-hospitalization-and-case-fatality-risk-in-10-pediatric-facilities-in-argentina
#16
Ángela Gentile, Julia Bakir, Gabriela Ensinck, Aldo Cancellara, Enrique V Casanueva, Verónica Firpo, Martín Caruso, María F Lución, Alejandro Santillán Iturres, Fabiana Molina, Héctor J Abate, Andrea Gajo Gane, Santiago López Papucci
INTRODUCTION: Community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) infections are prevalent both in Argentina and worldwide, and they may have a severe clinical course. OBJECTIVES: To estimate the hospitalization rate and case fatality risk factors of CA-MRSA infection. METHODS: Cross-sectional, analytical study. All patients < 15 years old with community-acquired Staphylococcus aureus (CA-SA) infections admitted to 10 pediatric facilities between January 2012 and December 2014 were included...
February 1, 2018: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/29333608/the-synergistic-effect-of-pdt-and-oxacillin-on-clinical-isolates-of-staphylococcus-aureus
#17
Natanel Iluz, Yasmin Maor, Natan Keller, Zvi Malik
BACKGROUND: Staphylococcus aureus is a major pathogen in clinical microbiology. It is known to cause infections at various body sites and can be life-threatening. The development of resistance to many well-established antibiotic treatments and the prevalence of methicillin-resistant S. aureus (MRAS) among hospital patients and the general community pose challenges in treating the pathogen. The antimicrobial effect of photodynamic therapy (PDT) has been a subject of study for a long time and can offer new strategies for dealing with resistant strains...
January 15, 2018: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29331783/comparative-study-of-novel-in-situ-decorated-porous-chitosan-selenium-scaffolds-and-porous-chitosan-silver-scaffolds-towards-antimicrobial-wound-dressing-application
#18
Dhee P Biswas, Neil M O'Brien-Simpson, Eric C Reynolds, Andrea J O'Connor, Phong A Tran
Dermal defects caused by trauma or disease are challenging to treat due to difficult-to-treat infections that impair wound healing. Due to the widespread emergence of drug-resistant bacteria and dwindling discoveries of new antibiotics, there is currently an urgent need to introduce novel antimicrobials effective against antibiotic-resistant bacteria without causing damage to host tissues. As selenium (Se) and silver (Ag) are known for their antimicrobial properties, we investigated the separate loading of these materials into porous chitosan/PVA (CS) scaffolds through a simple in situ deposition method to create two distinct wound dressing materials (CS-Se and CS-Ag)...
January 5, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29330346/underestimation-of-staphylococcus-aureus-mrsa-and-mssa-carriage-associated-with-standard-culturing-techniques-one-third-of-carriers-missed
#19
S T J Tsang, M P McHugh, D Guerendiain, P J Gwynne, J Boyd, A H R W Simpson, T S Walsh, I F Laurenson, K E Templeton
OBJECTIVES: Nasal carriers of Staphylococcus (S.) aureus (MRSA and MSSA) have an increased risk for healthcare-associated infections. There are currently limited national screening policies for the detection of S. aureus despite the World Health Organization's recommendations. This study aimed to evaluate the diagnostic performance of molecular and culture techniques in S. aureus screening, determine the cause of any discrepancy between the diagnostic techniques, and model the potential effect of different diagnostic techniques on S...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29329747/antibacterial-properties-of-latarcin-1-derived-cell-penetrating-peptides
#20
Deepthi Poornima Budagavi, Archana Chugh
Cell-penetrating peptides (CPPs) and antimicrobial peptides (AMPs) share certain physicochemical parameters such as amphipathicity, hydrophobicity, cationicity and pI, due to which these two groups of peptides also exhibit overlapping functional characteristics. In our current work, we have evaluated antimicrobial properties of cell-penetrating peptides derived from Latarcin1. Latarcin derived peptide (LDP) exhibited antimicrobial activity against representative microorganisms tested and bactericidal effect against methicillin resistant Staphylococcus aureus (MRSA), which was used as model organism of study in the present work...
January 9, 2018: European Journal of Pharmaceutical Sciences
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