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Staphylococcus aureus bacteremia

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https://www.readbyqxmd.com/read/27901071/staphylococcus-aureus-dependent-septic-arthritis-in-murine-knee-joints-local-immune-response-and-beneficial-effects-of-vaccination
#1
Alessia Corrado, Paolo Donato, Silvia Maccari, Raffaella Cecchi, Tiziana Spadafina, Letizia Arcidiacono, Simona Tavarini, Chiara Sammicheli, Donatello Laera, Andrea Guido Oreste Manetti, Paolo Ruggiero, Bruno Galletti, Sandra Nuti, Ennio De Gregorio, Sylvie Bertholet, Anja Seubert, Fabio Bagnoli, Giuliano Bensi, Emiliano Chiarot
Staphylococcus aureus is the major cause of human septic arthritis and osteomyelitis, which deserve special attention due to their rapid evolution and resistance to treatment. The progression of the disease depends on both bacterial presence in situ and uncontrolled disruptive immune response, which is responsible for chronic disease. Articular and bone infections are often the result of blood bacteremia, with the knees and hips being the most frequently infected joints showing the worst clinical outcome. We report the development of a hematogenous model of septic arthritis in murine knees, which progresses from an acute to a chronic phase, similarly to what occurs in humans...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27898714/comparable-effectiveness-of-first-week-treatment-with-anti-staphylococcal-penicillin-versus-cephalosporin-in-methicillin-sensitive-staphylococcus-aureus-bacteremia-a-propensity-score-adjusted-retrospective-study
#2
Erik Forsblom, Eeva Ruotsalainen, Asko Järvinen
: The objective was to compare the prognostic impact of first week treatment with anti-staphylococcal penicillin (ASP) versus cephalosporin in methicillin-sensitive Staphylococcus aureus bacteremia (MS-SAB). Altogether 580 patients were retrospectively followed and categorized according to first week treatment; 84% (488) received ASP (cloxacillin) and 16% (92) cephalosporin (cefuroxime or ceftriaxone). SAB management was optimized with formal bedside infectious disease specialist consultation in 88%, deep infection foci diagnosed in 77% and adjunctive rifampicin therapy given to 61% of patients...
2016: PloS One
https://www.readbyqxmd.com/read/27872830/bacteremia-in-hemodialysis-patients
#3
REVIEW
Masashi Suzuki, Nobuhiko Satoh, Motonobu Nakamura, Shoko Horita, George Seki, Kyoji Moriya
Infection is a common complication and is the second leading cause of death in hemodialysis patients. The risk of bacteremia in hemodialysis patients is 26-fold higher than in the general population, and 1/2-3/4 of the causative organisms of bacteremia in hemodialysis patients are Gram-positive bacteria. The ratio of resistant bacteria in hemodialysis patients compared to the general population is unclear. Several reports have indicated that hemodialysis patients have a higher risk of methicillin-resistant Staphylococcus aureus infection...
November 6, 2016: World Journal of Nephrology
https://www.readbyqxmd.com/read/27869407/community-acquired-staphylococcus-aureus-bacteremia-in-children-a-cohort-study-for-2010-2014
#4
Guadalupe Pérez, Soledad Martiren, Vanesa Reijtman, Romina Romero, Alejandra Mastroianni, Lidia Casimir, Rosa Bologna
INTRODUCTION: Community-acquired methicillin-resistant Staphylococcus aureus infections are a common, serious problem in pediatrics. OBJETIVE: To describe antibiotic resistance in community-acquired Staphylococcus aureus (SA) bacteremias. To compare the characteristics of SA bacteremias in terms of methicillin resistance. MATERIALS AND METHODS: Prospective cohort enrolled between January 2010 and December 2014. Inclusion criteria: infants and children between 30 days old and 16 years old hospitalized at the Hospital de Pediatria J...
December 1, 2016: Archivos Argentinos de Pediatría
https://www.readbyqxmd.com/read/27850319/680-clinical-utility-of-maldi-tof-ms-in-icu-patients-with-staphylococcus-aureus-bacteremia
#5
Kwangha Lee, Insu Kim, Eun Suk Jeong, Tae Hwa Kim
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27847295/pyomyositis-caused-by-streptococcus-pneumoniae-after-allogeneic-hematopoietic-stem-cell-transplantation
#6
Shuhei Kurosawa, Noriko Doki, Noritaka Sekiya, Yasushi Senoo, Syuzo Ikuta, Yasunobu Takaki, Kazuteru Ohashi
Pyomyositis is classified into two main types: tropical and non-tropical. Non-tropical pyomyositis occurs among various immunocompromised patients, and Staphylococcus aureus has been reported as the most common pathogen. Pyomyositis caused by Streptococcus pneumoniae is uncommon, and has not been previously reported after allogeneic hematopoietic stem cell transplantation (allo-HSCT). Here, we report a unique case with pyomyositis caused by S. pneumoniae in the bilateral erector spinae muscles 34 months after allo-HSCT...
November 12, 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/27833929/clinical-reasoning-of-infectious-diseases-physicians-behind-the-use-or-nonuse-of-transesophageal-echocardiography-in-staphylococcus-aureus-bacteremia
#7
Heather Young, Bryan C Knepper, Connie S Price, Susan Heard, Timothy C Jenkins
In this prospective cohort with Staphylococcus aureus bacteremia, transesophageal echocardiography (TEE) was performed in 24% of cases. Consulting Infectious Diseases physicians most frequently cited low suspicion for endocarditis due to rapid clearance of blood cultures and the presence of a secondary focus requiring an extended treatment duration as reasons for foregoing TEE.
October 2016: Open Forum Infectious Diseases
https://www.readbyqxmd.com/read/27826136/vegetation-attached-to-the-left-interatrial-septal-surface-at-the-congenital-location-of-the-foramen-ovale-a-rare-occurrence
#8
Waqas Javed Siddiqui, Ishan Acharya, Praneet Iyer, Muhammad Yasir Khan, Muhammad Rafique, Anand Kaji, Ketan Gala
BACKGROUND Non-valvular mural infective endocarditis (IE) is a rare bacterial growth on cardiac walls. Several risk factors have been reported. Echocardiography is an important diagnostic modality for diagnosing vegetation attached to the intracardiac walls. CASE REPORT We present the case of a 57-year-old man admitted with Staphylococcus aureus bacteremia due to an infected tunnelled hemodialyses catheter. Transthoracic echocardiogram did not show any abnormality, but transesophageal echocardiogram (TEE) revealed a 1...
November 9, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27820968/safety-and-efficacy-of-daptomycin-in-outpatient-parenteral-antimicrobial-therapy-a-prospective-and-multicenter-cohort-study-daptodom-trial
#9
Carlos Cervera, Pedro Sanroma, Víctor González-Ramallo, Cristina García de la María, Gemma Sanclemente, Nieves Sopena, Marcos Pajarón, Antonio Segado, Manuel Mirón, Francisco Antón, Andima Basterretxea, Ana Cuende, José M Miró
BACKGROUND: Daptomycin is an optimal choice for outpatient parenteral antibiotic therapy (OPAT) because of its safety, once-daily administration and its activity against Gram-positive bacteria. Although daptomycin is increasingly being used in OPAT, limited information about its safety in this scenario is available. METHODS: We performed a prospective multicentre pilot study to evaluate the safety of daptomycin in outpatients with proved or suspected Gram-positive infections (DAPTODOM)...
November 8, 2016: Infectious Diseases
https://www.readbyqxmd.com/read/27795479/orbital-cellulitis-with-endogenous-panophthalmitis-caused-by-methicillin-sensitive-staphylococcus-aureus-in-pregnancy
#10
Simranjeet Aulakh, Akshay Gopinathan Nair, Rahul Gandhi, Amit H Palkar, Mihir G Trivedi, Nayana A Potdar, Chhaya A Shinde
Orbital cellulitis along with panophthalmitis is uncommon. The causes are usually trauma-related or endogenous. The prognosis in terms of globe salvage is very poor with most cases usually requiring enucleation or evisceration of the affected eye. Immunosuppression in some form is usually present, which accounts for the aggressive course of the infection. In this communication, we report a case of a 25-year-old female, in the second trimester of pregnancy, who developed orbital cellulitis and panophthalmitis caused by Methicillin sensitive Staphylococcus aureus (MSSA); with the primary source of infection being cellulitis on her forearm following intravenous therapy for severe anaemia...
October 31, 2016: Japanese Journal of Infectious Diseases
https://www.readbyqxmd.com/read/27777118/the-occurrence-of-infective-endocarditis-with-staphylococcus-lugdunensis-bacteremia-a-retrospective-cohort-study-and-systematic-review
#11
Lemuel R Non, Carlos A Q Santos
BACKGROUND: Staphylococcus lugdunensis is a coagulase-negative staphylococcus with similar virulence characteristics as S. aureus. Whether S. lugdunensis causes infective endocarditis (IE) in a similar proportion of cases as S. aureus (reported to be 12.6% in a definitive multicenter prospective study) is unclear. METHODS: We conducted a retrospective cohort study of adult patients with at least one blood culture positive for S. lugdunensis at our institution from January 2006 to December 2014...
October 21, 2016: Journal of Infection
https://www.readbyqxmd.com/read/27767002/experience-with-rapid-microarray-based-diagnostic-technology-and-antimicrobial-stewardship-for-patients-with-gram-positive-bacteremia
#12
Elizabeth A Neuner, Andrea M Pallotta, Simon W Lam, David Stowe, Steven M Gordon, Gary W Procop, Sandra S Richter
OBJECTIVE To describe the impact of rapid diagnostic microarray technology and antimicrobial stewardship for patients with Gram-positive blood cultures. DESIGN Retrospective pre-intervention/post-intervention study. SETTING A 1,200-bed academic medical center. PATIENTS Inpatients with blood cultures positive for Staphylococcus aureus, Enterococcus faecalis, E. faecium, Streptococcus pneumoniae, S. pyogenes, S. agalactiae, S. anginosus, Streptococcus spp., and Listeria monocytogenes during the 6 months before and after implementation of Verigene Gram-positive blood culture microarray (BC-GP) with an antimicrobial stewardship intervention...
November 2016: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/27765353/carnosic-acid-acts-synergistically-with-gentamicin-in-killing-methicillin-resistant-staphylococcus-aureus-clinical-isolates
#13
Nicolás M Vázquez, Graciela Fiorilli, Paulo A Cáceres Guido, Silvia Moreno
BACKGROUND: Methicillin-resistant Staphylococcus aureus (MRSA) is resistant to different commonly used antibiotics, stressing the need for further strategies to treat this human pathogen with worldwide prevalence. The use of phytochemicals within the current pharmacology is a promising approach to enhance the antimicrobial activity of common antibiotics in the battle against these bacteria. PURPOSE: The purpose of this study was to determine the antimicrobial effectiveness of carnosic acid, the major constituent of Rosmarinus officinalis L...
November 15, 2016: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
https://www.readbyqxmd.com/read/27765025/staphylococcus-aureus-bacteremia-with-iliac-artery-endarteritis-in-a-patient-receiving-ustekinumab
#14
Insa Joost, Johannes Steinfurt, Philipp T Meyer, Winfried V Kern, Siegbert Rieg
BACKGROUND: Ustekinumab (Stelara®), a human monoclonal antibody targeting the p40-subunit of interleukin (IL)-12 and IL-23, is indicated for moderate to severe plaque psoriasis and psoriatic arthritis. In large multicenter, prospective trials assessing efficacy and safety of ustekinumab increased rates of severe infections have not been observed so far. CASE PRESENTATION: Here, we report the case of a 64-year old woman presenting with chills, pain and swelling of her right foot with dark maculae at the sole, and elevated inflammatory markers...
October 20, 2016: BMC Infectious Diseases
https://www.readbyqxmd.com/read/27741135/fatal-endocarditis-with-methicilin-sensible-staphylococcus-aureus-and-major-complications-rhabdomyolysis-pericarditis-and-intracerebral-hematoma-a-case-report-and-review-of-the-literature
#15
Anca Meda Georgescu, Leonard Azamfirei, Krisztina Szalman, Edit Szekely
BACKGROUND: Over the last decades Staphylococcus aureus (SA) has become the dominant etiology of native valve infective endocarditis, with the community-acquired methicillin-sensible Staphylococcus aureus (CA-MSSA) strains being the prevailing type. CASE: We report here a case of extremely severe CA-MSSA aortic valve acute endocarditis associated with persistent Staphylococcus aureus bacteremia (SAB) in a previously healthy man and include a literature review.The patient developed severe and rare complications (purpura, purulent pericarditis, intracerebral hematoma, and rhabdomyolysis) through systemic embolism; they required drainage of pericardial empyema and cerebral hematoma, the latter eventually caused a fatal outcome...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27738564/hospital-acquired-methicillin-resistant-staphylococcus-aureus-bacteremia-related-to-medicare-antibiotic-prescriptions-a-state-level-analysis
#16
Bryce T Fukunaga, Wesley K Sumida, Deborah A Taira, James W Davis, Todd B Seto
Methicillin-resistant Staphylococcus aureus (MRSA) results in almost half of all deaths caused by antibiotic resistant organisms. Current evidence suggests that MRSA infections are associated with antibiotic use. This study examined state-level data to determine whether outpatient antibiotic use was associated with hospital-acquired MRSA (HA-MRSA) infections. The 2013 Centers for Disease Control and Prevention (CDC) Healthcare-Associated Infections Progress Report was used to obtain HA-MRSA infection rates...
October 2016: Hawai'i Journal of Medicine & Public Health: a Journal of Asia Pacific Medicine & Public Health
https://www.readbyqxmd.com/read/27736763/using-mrsa-screening-tests-to-predict-methicillin-resistance-in-staphylococcus-aureus-bacteremia
#17
Guillaume Butler-Laporte, Matthew P Cheng, Alexandre P Cheng, Emily G McDonald, Todd C Lee
Bloodstream infections with Staphylococcus aureus are clinically significant and are often treated with empirical methicillin resistance (MRSA, methicillin-resistant S. aureus) coverage. However, vancomycin has associated harms. We hypothesized that MRSA screening correlated with resistance in S. aureus bacteremia and could help determine the requirement for empirical vancomycin therapy. We reviewed consecutive S. aureus bacteremias over a 5-year period at two tertiary care hospitals. MRSA colonization was evaluated in three ways: as tested within 30 days of bacteremia (30-day criterion), as tested within 30 days but accounting for any prior positive results (ever-positive criterion), or as tested in known-positive patients, with patients with unknown MRSA status being labeled negative (known-positive criterion)...
December 2016: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/27730778/antibiotic-lock-therapy-in-the-era-of-gram-negative-resistance
#18
Rajeev Soman, Neha Gupta, Mitesh Suthar, Jatin Kothari, Alan Almeida, Anjali Shetty, Camilla Rodrigues
BACKGROUND: Central-line-associated blood-stream infection (CLABSI) is a highly consequential nosocomial infection. The most effective management includes the removal of the infected catheter. Retention of the catheter and antibiotic lock therapy (ALT) along with systemic antibiotics may be attempted only if there are unusual extenuating circumstances. CLABSIs due to Gram-negative bacteria (GNB) is more common in our setting and the organisms are often highly resistant. Hence, there is a need to explore the use of novel antimicrobials for catheter lock solutions along with antibiofilm agents...
February 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27709434/complete-adherence-to-evidence-based-quality-of-care-indicators-for-staphylococcus-aureus-bacteremia-resulted-in-better-prognosis
#19
Miki Nagao, Masaki Yamamoto, Yasufumi Matsumura, Isao Yokota, Shunji Takakura, Satoshi Teramukai, Satoshi Ichiyama
PURPOSE: Staphylococcus aureus bacteremia (SAB) is a serious clinical condition associated with high morbidity and mortality. Recent studies have revealed that adherence to evidence-based quality-of-care indicators (QCIs) for the management of SAB could result in reduced mortality. We aimed to determine whether compliance with QCIs was associated with mortality and whether compliance with QCIs predicted the mortality of patients with SAB. METHODS: In a university hospital in Kyoto, Japan, SAB patients, who survived at least 14 days after positive blood cultures were analyzed from 2006 to 2014 to assess their compliance with QCIs and the trend in mortality...
October 5, 2016: Infection
https://www.readbyqxmd.com/read/27658860/citrobacter-braakii-bacteremia-case-report-and-review-of-the-literature
#20
Michelle Oyeka, Suresh Antony
Bacteremia is usually caused by gram-positive organisms such as Staphylococcus aureus or β hemolytic streptococci. While there is a wealth of information that exits for these types of bacteremia, less is available to address bacteremia that is caused by less common bacteria such as Citrobacter. We report an unusual case of Citrobacter braakii bacteremia in a patient with multiple comorbidities that presented to the hospital with cellulitis and pleural effusion. Blood cultures grew Citrobacter braakii. Despite good response to antibiotic treatment, the patient's infection proved to be persistent and he succumbed to the cirrhosis of the liver and subsequent renal failure...
September 20, 2016: Infectious Disorders Drug Targets
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