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methicillin sensitive staphylococcus aureus

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https://www.readbyqxmd.com/read/28342937/molecular-epidemiology-of-staphylococcus-aureus-nasal-colonization-among-patients-and-their-parents-guardian-in-an-iranian-referral-hospital
#1
Babak Pourakbari, Mahmoud Khodabandeh, Shima Mahmoudi, Farah Sabouni, Alireza Aziz-Ahari, Abbas Bahador, Sepideh Keshavarz Valian, Reihaneh Hosseinpour Sadeghi, Setareh Mamishi
INTRODUCTION: Carriage of Staphylococcus aureus in the nose appears to play a key role in the epidemiology and pathogenesis of infection. It is important to investigate the genetic relatedness of S. aureus and MRSA clones in different geographic regions. The aim of this study was to assess the nasal carriage rate of S. aureus, including MRSA strains in both hospitalized children and general adult population (parents/guardian). In addition, antibiotic susceptibility pattern and molecular diversity of S...
March 22, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28341068/clinical-characteristics-of-pyogenic-flexor-tenosynovitis-in-pediatric-patients
#2
Christopher M Brusalis, Stephanie Thibaudeau, Robert B Carrigan, Ines C Lin, Benjamin Chang, Apurva S Shah
PURPOSE: To characterize the clinical presentation, common pathogens, antimicrobial susceptibility, and treatment methods associated with pyogenic flexor tenosynovitis (PFT) in pediatric patients. METHODS: Patients who underwent surgical treatment for PFT at a large tertiary-care children's hospital between 2001 and 2015 were identified. Descriptive summary statistics were reported on patient demographics, presenting symptoms and clinical examination features, culture results, treatment strategies, and early complications...
March 21, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28338958/molecular-cloning-and-characterization-of-antimicrobial-peptides-from-skin-of-hylarana-guentheri
#3
Zhu Dong, Wenjie Luo, Hengren Zhong, Manchuriga Wang, Yanting Song, Shiming Deng, Yingxia Zhang
The cDNAs encoding antimicrobial peptides (AMPs) in the skin of Hylarana guentheri were identified, namely temporin (five peptides, termed temporin-GHa-GHd and temporin-GUa), brevinin-1 (one peptide, brevinin-1GUb), and brevinin-2 (eight peptides, brevinin-2GHd-2GHj, and brevinin-2GHb). Eleven of the 14 peptides have novel primary structures. Synthesized temporin GHa-GHd have broad-spectrum antimicrobial activities against Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Escherichia coli, Vibrio alginolyticus, and Pseudomonas aeruginosa), as well as fungus (Candida albicans)...
March 18, 2017: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/28329529/concurrent-pyogenic-granuloma-and-bullous-impetigo-of-a-pregnant-woman-s-finger
#4
Rosie Qin, Philip R Cohen
BACKGROUND: Bullous impetigo is a superficial skininfection caused by Staphylococcus aureus (S.aureus). Pyogenic granuloma is a common benigntumor frequently associated with prior trauma.Bullous impetigo and pyogenic granuloma may occurin pregnant women. PURPOSE: The features of a pregnant womanwith pyogenic granuloma and bullous impetigoconcurrently present in a lesion on her finger aredescribed. METHODS: PubMed was used to search the followingterms: bullous impetigo, pregnancy, and pyogenicgranuloma...
March 15, 2017: Dermatology Online Journal
https://www.readbyqxmd.com/read/28329125/outcomes-in-patients-with-cardiovascular-implantable-electronic-device-infection-managed-with-chronic-antibiotic-suppression
#5
Eugene M Tan, Daniel C DeSimone, M Rizwan Sohail, Larry M Baddour, Walter R Wilson, James M Steckelberg, Abinash Virk
Background: Most cardiovascular implantable electronic device (CIED) recipients are elderly, have multiple comorbid conditions, and are at increased risk of CIED infection (CIEDI). Current guidelines recommend complete device removal in patients with CIEDI to prevent relapse and mortality. However, comorbidities or other factors may preclude device removal, thus prompting a non-surgical approach that includes chronic antibiotic suppression (CAS). There are limited data on outcomes of patients receiving CAS for CIEDI...
February 24, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28322345/nursing-staff-fluctuation-and-pathogenic-burden-in-the-nicu-effective-outbreak-management-and-the-underestimated-relevance-of-non-resistant-strains
#6
Kai O Hensel, Rhea van den Bruck, Ingo Klare, Michael Heldmann, Beniam Ghebremedhin, Andreas C Jenke
In the course of a hospital management takeover, a microbial outbreak took place in a tertiary neonatal intensive care unit (NICU). Here, we characterize the outbreak and its management. About 4 months prior to takeover, there was a sharp increase in positive isolates for MSSA and multidrug-resistant organisms (MDROs). Simultaneously, the nursing staff sick leave rate increased dramatically which directly correlated with the number of infection/colonization per week (r(2) = 0.95, p = 0.02). During the following months we observed several peaks in positive isolates of methicillin-sensitive staphylococcus aureus (MSSA), MDROs and subsequently a vancomycin-resistant enterococcus (VRE) outbreak...
March 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28321579/performance-of-three-generations-of-xpert-mrsa-in-routine-practice-approaching-the-aim
#7
H Jacqmin, A Schuermans, S Desmet, J Verhaegen, V Saegeman
The aim of this study was to evaluate retrospectively the performance of the Xpert MRSA assay in routine practice and its current use in the intensive care unit (ICU) setting of our hospital, since a pre-emptive isolation strategy has been applied. A total of 6473 patients were routinely screened with ESwab for methicillin-resistant Staphylococcus aureus (MRSA) using three generations of rapid real-time polymerase chain reaction (PCR) (Cepheid GeneXpert) over three consecutive periods of time. Performance was evaluated using broth enrichment culture as the reference method...
March 20, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28315045/late-onset-chest-wall-abscess-due-to-a-biodegradable-rib-pin-infection-after-lung-transplantation
#8
Yasufumi Goda, Toyofumi F Chen-Yoshikawa, Masaaki Kusunose, Masatsugu Hamaji, Hideki Motoyama, Kyoko Hijiya, Akihiro Aoyama, Hiroshi Date
A 55-year-old man with end-stage emphysema underwent a right single-lung transplantation through a posterolateral thoracotomy. The fifth rib was divided and fused back using a biodegradable pin made of polylactide acid and hydroxyapatite. Two weeks postoperatively, he suffered from central vein catheter-related sepsis due to methicillin-sensitive Staphylococcus aureus. After being successfully treated for sepsis, he was discharged. However, 3 months later, computed tomography revealed multiple loculated abscesses in the chest wall and the right pleural space...
March 17, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28304109/methicillin-resistant-staphylococcus-aureus-mrsa-a-controversial-food-borne-pathogen
#9
REVIEW
Daniil Sergelidis, Apostolos S Angelidis
Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of severe healthcare-associated (HA) infections. Although during the last decade the incidence of HA invasive infections has dropped, the incidence of community-associated MRSA (CA-MRSA) infections has risen among the general population. Moreover, CA-MRSA, livestock-associated MRSA (LA-MRSA) and HA MRSA (HA-MRSA) can be found in foods intended for human consumption. Several studies from different geographical areas have reported the presence of enterotoxin genes in several MRSA food isolates...
March 17, 2017: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/28299678/an-electrochemical-dna-sensing-system-using-modified-nanoparticle-probes-for-detecting-methicillin-resistant-staphylococcus-aureus
#10
Hiroaki Sakamoto, Yoshihisa Amano, Takenori Satomura, Shin-Ichiro Suye
We have developed a novel, highly sensitive, biosensing system for detecting methicillin-resistant Staphylococcus aureus (MRSA). The system employs gold nanoparticles (AuNPs), magnetic nanoparticles (mNPs), and an electrochemical detection method. We have designed and synthesized ferrocene- and single-stranded DNA-conjugated nanoparticles that hybridize to MRSA DNA. Hybridized complexes are easily separated by taking advantage of mNPs. A current response could be obtained through the oxidation of ferrocene on the AuNP surface when a constant potential of +250 mV vs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28293153/susceptibility-profile-of-methicillin-resistant-staphylococcus-aureus-to-linezolid-in-clinical-isolates
#11
Ali Shariq, Syed Bilal Tanvir, Atif Zaman, Salman Khan, Armeena Anis, Misha Aftab Khan, Sumaira Ahmed
OBJECTIVE: To determine the resistance and sensitivity pattern of methicillin-resistant Staphylococcus aureus (MRSA) isolates to linezolid (LZD) along with its prevalence in a tertiary care hospital of Karachi, Pakistan. MATERIALS AND METHODS: A cross-sectional study was carried out. This study lasted for about 1 year. Prevalence and sensitivity of LZD, vancomycin, and oxacillin was tested against isolates of MRSA. RESULTS: Out of total 369 specimens 165 were found to be MRSA making the prevalence in our study 44...
January 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/28292662/cytomegalovirus-duodenitis-associated-with-life-threatening-duodenal-hemorrhage-in-an-immunocompetent-patient-a-case-report
#12
Lucy Shen, David Youssef, Suzan Abu-Abed, Sangita K Malhotra, Kenneth Atkinson, Elena Vikis, George Melich, Shawn MacKenzie
INTRODUCTION: Cytomegalovirus (CMV) is known to be opportunistic in immunocompromised patients. However, there have been emerging cases of severe CMV infections found in immunocompetent patients. Gastrointestinal (GI) CMV disease is the most common manifestation affecting immunocompetent patients, with duodenal involvement being exceedingly rare. Presented is a case of an immunocompetent patient with life-threatening bleeding caused by CMV duodenitis, requiring surgical intervention. PRESENTATION OF CASE: A 60-year-old male with history of disseminated Methicillin-sensitive Staphylococcus aureus (MSSA) bacteremia and aortic valve infective endocarditis, presented with life-threatening upper GI hemorrhage...
February 21, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28290115/sonication-of-arthroplasty-implants-improves-accuracy-of-periprosthetic-joint-infection-cultures
#13
REVIEW
Adam C Rothenberg, Alan E Wilson, John P Hayes, Michael J O'Malley, Brian A Klatt
BACKGROUND: There is evidence that sonication of explanted prosthetic hip and knee arthroplasty components with culture of the sonication fluid may enhance diagnostic sensitivity. Previous studies on the use of implant sonicate cultures have evaluated diagnostic thresholds but did not elaborate on the clinical importance of positive implant sonicate cultures in the setting of presumed aseptic revisions and did not utilize consensus statements on periprosthetic joint infection (PJI) diagnosis when defining their gold standard for infection...
March 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28289460/the-evaluation-of-mrsa-surveillance-cultures-by-the-number-and-combinations-of-anatomical-sites
#14
Irena Grmek Kosnik, Alenka Storman, Ziva Petrovic, Slavica Robnik, Urska Dermota, Tjasa Zohar Cretnik
INTRODUCTION: The identification of patients infected and/or colonised by methicillin resistant Staphylococcus aureus (MRSA) is necessary for the timely introduction of measures for infection control. We compared the diagnostic efficacy of combinations of MRSA surveillance swabs routinely taken by health institutions in the country. METHODS: All surveillance samples, which were sent for a microbiological analysis to detect MRSA with the culture method in 2014, in the three departments for medical microbiology of the National Laboratory for Health, Environment and Food, were included in this study...
March 1, 2017: Zdravstveno Varstvo
https://www.readbyqxmd.com/read/28283006/-investigation-of-biofilm-formation-properties-of-staphylococcus-isolates
#15
Duygu Nilüfer Öcal, İştar Dolapçı, Zeynep Ceren Karahan, Alper Tekeli
Biofilm production is an important virulence factor which allows staphylococci to adhere to medical devices. The principal component of biofilm is a "polysaccharide intercellular adhesin (PIA)" which is composed of a beta-1,6-N-acetylglucosamine polymer synthesized by an enzyme (N-acetylglucosamine transferase) encoded by the ica operon found on the bacterial chromosome. This operon is composed of four genes (A, B, C, and D), and a transposable element IS256. In this study, we aimed to determine the biofilm production characteristics of invasive/non-invasive staphylococcus isolates and different staphylococcus species...
January 2017: Mikrobiyoloji Bülteni
https://www.readbyqxmd.com/read/28279319/infective-endocarditis-risk-after-percutaneous-pulmonary-valve-implantation-with-the-melody-and%C3%A2-sapien%C3%A2-valves
#16
Sebastien Hascoet, Lucia Mauri, Caroline Claude, Emmanuelle Fournier, Julie Lourtet, Jean-Yves Riou, Philippe Brenot, Jérôme Petit
OBJECTIVES: This study compared the risk of infective endocarditis (IE) after percutaneous pulmonary valve implantation (PPVI) with the Sapien and Melody valves. BACKGROUND: The incidence of IE after PPVI is estimated at 3% per year with the Melody valve. The Sapien valve is a more recently marketed valve used for PPVI. METHODS: We retrospectively included consecutive patients who underwent PPVI at a single center between 2008 and 2016. IE was diagnosed using the modified DUKE criteria...
March 13, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28278183/systemic-thioridazine-in-combination-with-dicloxacillin-against-early-aortic-graft-infections-caused-by-staphylococcus-aureus-in-a-porcine-model-in-vivo-results-do-not-reproduce-the-in-vitro-synergistic-activity
#17
Michael Stenger, Carsten Behr-Rasmussen, Kasper Klein, Rasmus B Grønnemose, Thomas Emil Andersen, Janne K Klitgaard, Hans Jørn Kolmos, Jes S Lindholt
INTRODUCTION: Conservative treatment solutions against aortic prosthetic vascular graft infection (APVGI) for inoperable patients are limited. The combination of antibiotics with antibacterial helper compounds, such as the neuroleptic drug thioridazine (TDZ), should be explored. AIM: To investigate the efficacy of conservative systemic treatment with dicloxacillin (DCX) in combination with TDZ (DCX+TDZ), compared to DCX alone, against early APVGI caused by methicillin-sensitive Staphylococcus aureus (MSSA) in a porcine model...
2017: PloS One
https://www.readbyqxmd.com/read/28270804/eradication-and-sensitization-of-methicillin-resistant-staphylococcus-aureus-to-methicillin-with-bioactive-extracts-of-berry-pomace
#18
Serajus Salaheen, Mengfei Peng, Jungsoo Joo, Hironori Teramoto, Debabrata Biswas
The therapeutic roles of phenolic blueberry (Vaccinium corymbosum) and blackberry (Rubus fruticosus) pomace (commercial byproduct) extracts (BPE) and their mechanism of actions were evaluated against methicillin resistant Staphylococcus aureus (MRSA). Five major phenolic acids of BPE, e.g., protocatechuic, p. coumaric, vanillic, caffeic, and gallic acids, as well as crude BPE completely inhibited the growth of vegetative MRSA in vitro while BPE+methicillin significantly reduced MRSA biofilm formation on plastic surface...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28265815/prognostic-impact-of-hyperglycemia-at-onset-of-methicillin-sensitive-staphylococcus-aureus-bacteraemia
#19
E Forsblom, E Ruotsalainen, A Järvinen
Previous reports have associated hyperglycemia to poor outcome among aged and comorbid Staphylococcus aureus bacteraemia (SAB) patients. However, the prognostic impact of hyperglycemia in SAB irrespective of age and underlying conditions including a diagnosis of diabetes has received little attention. The objective here was to evaluate the prognostic relevance of hyperglycemia at onset of methicillin-sensitive SAB (MS-SAB). It was a retrospective study of MS-SAB patients. Blood glucose was measured within 24 h of positive blood cultures...
March 6, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28265207/clinical-risk-factors-for-infective-endocarditis-in-staphylococcus-aureus-bacteremia
#20
Vincent Bryan D Salvador, Bikash Chapagain, Astha Joshi, Debra J Brennessel
Crucial to the management of staphylococcal bacteremia is an accurate evaluation of associated endocarditis, which has both therapeutic and prognostic implications. Because the clinical presentation of endocarditis can be nonspecific, the judicious use of echocardiography is important in distinguishing patients at high risk of developing endocarditis. In the presence of high-risk clinical features, an early transesophageal echocardiogram is warranted without prior transthoracic echocardiography. The purpose of this study was to investigate the clinical risk factors for staphylococcal infective endocarditis that might warrant earlier transesophageal echocardiography and to describe the incidence of endocarditis in cases of methicillin-resistant and methicillin-sensitive Staphylococcus aureus bacteremia...
February 2017: Texas Heart Institute Journal
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