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https://www.readbyqxmd.com/read/28956538/epidemiology-of-panton-valentine-leukocidin-harbouring-staphylococcus-aureus-in-cutaneous-infections-from-iran-a-systematic-review-and-meta-analysis
#1
Milad Shahini Shams Abadi, Iraj Nikokar, Seyedeh Mahsan Hoseini Alfatemi, Yalda Malekzadegan, Abdolah Azizi, Hadi Sedigh Ebrahim-Saraie
Panton-Valentine Leukocidin (PVL) producing Staphylococcus aureus has been associated with severity of skin infections and pathology that suggest a major role in pathogenicity. The present study aimed to determine the overall prevalence of PVL harbouring S. aureus isolates from cutaneous infections in Iran. A systematic search was performed by using Medline electronic databases (PubMed) from the papers published by Iranian authors to the end of March 2017. Ten publications which met our inclusion criteria were then selected for data extraction and analysis by Comprehensive Meta-Analysis Software...
September 1, 2017: Le Infezioni in Medicina
https://www.readbyqxmd.com/read/28946704/emergence-of-nasal-carriage-of-st80-and-st152-pvl-staphylococcus-aureus-isolates-from-livestock-in-algeria
#2
Amir Agabou, Zouleikha Ouchenane, Christelle Ngba Essebe, Salim Khemissi, Mohamed Tedj Eddine Chehboub, Ilyes Bey Chehboub, Albert Sotto, Catherine Dunyach-Remy, Jean-Philippe Lavigne
The spread of toxinogenic Staphylococcus aureus is a public health problem in Africa. The objectives of the study were to investigate the rate of S. aureus nasal carriage and molecular characteristics of these strains in livestock and humans in three Algerian provinces. Nasal samples were collected from camels, horses, cattle, sheep and monkeys, as well as humans in contact with them. S. aureus isolates were genotyped using DNA microarray. The rate of S. aureus nasal carriage varied between species: camels (53%), humans and monkeys (50%), sheep (44...
September 25, 2017: Toxins
https://www.readbyqxmd.com/read/28938255/scabies-periorbital-cellulitis-and-recurrent-skin-abscesses-due-to-panton-valentine-leukocidin-positive-s-aureus-mimic-hyper-ige-syndrome-in-an-infant
#3
Renate Krüger, Leif G Hanitsch, Rasmus Leistner, Sylke Schneider-Burrus, Pia-Alice Hoppe, Sylvia Steinberg, Fabian Hauck, Horst von Bernuth
We describe the clinical course of a two-month-old infant that was evaluated for autosomal dominant Hyper IgE Syndrome based on eczema, periorbital cellulitis, skin abscesses, increased total IgE levels and blood eosinophilia. However, scabies and nasal colonization by Panton-Valentine Leucocidin positive S. aureus were eventually diagnosed. After specific treatment the child was asymptomatic.
September 20, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28935494/-an-atypical-case-of-necrotizing-staphylococcal-pneumonia
#4
E Bertreau, S Grard, T Baudry, N Freymond
INTRODUCTION: Some strains of Staphylococcus aureus produce a toxin known as Panton-Valentine leukocidin. These strains notably cause a necrotizing pneumonia which is associated with a high mortality. OBSERVATION: A 70-year-old woman presented with sub-acute onset dyspnea, low-grade fever, and hemoptysis after a trip to Dubai and New Zealand. Computed tomography showed bilateral necrotizing pneumonia, suggesting the diagnosis of pneumonia caused by S. aureus producing Panton-Valentine toxin...
September 18, 2017: Revue des Maladies Respiratoires
https://www.readbyqxmd.com/read/28904790/prevalence-of-methicillin-resistant-staphylococcus-aureus-mrsa-in-retail-food-in-singapore
#5
Kyaw Thu Aung, Li Yang Hsu, Tse Hsien Koh, Hapuarachchige Chanditha Hapuarachchi, Man Ling Chau, Ramona Alikiiteaga Gutiérrez, Lee Ching Ng
We characterised 227 Staphylococcus aureus isolates from retail food and food handlers' gloves samples obtained through food surveillance and risk assessment studies between 2011 and 2014. Of 227 isolates, five (2.2%) were methicillin-resistant and belonged to sequence types ST80 (n = 3) and ST6 (n = 2). All five isolates belonged to SCCmec type IV, were Panton-Valentine leukocidin (pvl)-negative and staphylococcal enterotoxin genes-positive. Resistance to azithromycin was found in ST80 isolates, in addition to resistance to beta-lactams...
2017: Antimicrobial Resistance and Infection Control
https://www.readbyqxmd.com/read/28900424/the-impact-of-the-staphylococcus-aureus-virulome-on-infection-in-a-developing-country-a-cohort-study
#6
Marthe Lebughe, Patrick Phaku, Silke Niemann, Dieudonné Mumba, Georg Peters, Jean-Jacques Muyembe-Tamfum, Alexander Mellmann, Lena Strauß, Frieder Schaumburg
We performed a cohort study to analyze the virulome of Staphylococcus aureus from the Democratic Republic of the Congo using whole genome sequencing and to assess its impact on the course of S. aureus infections. Community-associated S. aureus from nasal colonization (n = 100) and infection (n = 86) were prospectively collected. Phenotypic susceptibility testing and WGS was done for each isolate. WGS data were used to screen for 79 different virulence factors and for genotyping purposes (spa typing, multilocus sequence typing)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28892893/distribution-of-sccmec-elements-and-presence-of-panton-valentine-leukocidin-in-methicillin-resistant-staphylococcusepidermidis-isolated-from-clinical-samples-in-a-university-hospital-of-isfahan-city-iran
#7
Mehrdad Halaji, Ashkan Karimi, Parisa Shoaei, Mohammadreza Nahaei, Farzin Khorvash, Behrooz Ataei, Majid Yaran, Seyed Asghar Havaei
INTRODUCTION: Coagulase Negative Staphylococcus (CoNS) is considered as a major pathogen of nosocomial infections among immunosuppressed patients. AIM: The aim of this study was to identify the types of Staphylococcal Cassette Chromosome mec (SCCmec) and Panton-Valentine Leukocidin (PVL) gene among clinical Methicillin-Resistant S. epidermidis (MRSE) isolates collected from Isfahan. MATERIALS AND METHODS: This cross-sectional study was performed from March 2014 to January 2015 at a tertiary care hospital of Isfahan, Iran...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28886942/remitting-infections-due-to-community-acquired-panton-valentine-leukocidin-producing-staphylococcus-aureus-in-the-milan-area
#8
Sara Giordana Rimoldi, Cristina Pagani, Erika Longhi, Valentina Di Cristo, Annamaria Di Gregorio, Alessandro Mancon, Pietro Zerbi, Cristina Gervasoni, Maria Rita Gismondo, Agostino Riva
One of the most important Staphylococcus aureus virulence factors is Panton-Valentine leukocidin (PVL). We describe an outbreak of recurrent cutaneous PVL infections in different members of three family clusters. Molecular investigations were performed to confirm the presence of the mecA and PVL genes and to assign the SCCmec type, sequence type (ST) and clonal relatedness. A strain of PVL-producing methicillin-resistant S. aureus (MRSA) was responsible for infection in two related families (A and B), and a third family (C) was infected with PVL-producing methicillin-sensitive S...
September 5, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28869541/spread-of-tst-positive-staphylococcus-aureus-strains-belonging-to-st30-clone-among-patients-and-healthcare-workers-in-two-intensive-care-units
#9
Matthaios Papadimitriou-Olivgeris, Eleanna Drougka, Fotini Fligou, Vasiliki Dodou, Fevronia Kolonitsiou, Kriton S Filos, Evangelos D Anastassiou, Efthimia Petinaki, Markos Marangos, Iris Spiliopoulou
Staphylococcus aureus is a major cause of infections. Toxic shock syndrome toxin (TSST-1) and Panton-Valentine leukocidin (PVL) are associated with severe clinical syndromes. S. aureus colonizing isolates recovered from healthcare workers and patients in the intensive care unit (ICU) of a university hospital comprising Group A were compared with those from adult non-ICU carriers (Group B). mecA, lukS/lukF-PV (Panton-Valentine leukocidin, PVL), and tst (toxic shock syndrome toxin) gene carriage was detected by PCR...
September 4, 2017: Toxins
https://www.readbyqxmd.com/read/28866692/frequency-and-molecular-epidemiology-of-panton-valentine-leukocidin-gene-in-staphylococcus-aureus-colonising-hiv-infected-patients
#10
Z Mohd-Zain, S F A Mohd-Nawi, A Adnan, S Kumar
BACKGROUND: HIV-infected patients pose a high risk of contracting skin and soft tissue infections caused by Staphylococcus aureus. Those who are colonized with methicillin-resistant S. aureus (MRSA) that carry Panton-Valentine leukocidin (PVL) are predisposed to severe infections that could lead to necrotic skin infections. However the association of S. aureus specifically methicillin sensitive S. aureus carrying PVL gene in HIV patients has not been widely reported. Here, we study the prevalence and the molecular epidemiology of PVL-producing S...
August 2017: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/28865851/prevalence-antimicrobial-susceptibility-and-molecular-characterization-of-staphylococcus-aureus-isolated-from-dairy-herds-in-northern-china
#11
Huimin Liu, Songli Li, Lu Meng, Lei Dong, Shengguo Zhao, Xinyi Lan, Jiaqi Wang, Nan Zheng
Staphylococcus aureus is one of the main pathogens involved in dairy cow mastitis. Monitoring of antibiotic use would prove useful to assess the risk of Staph. aureus in raw milk. The objective of this work was to investigate the prevalence of Staph. aureus strais isolated from raw milk in northern China, and to characterize antimicrobial susceptibility of these strains and their key virulence genes. In total, 195 raw milk samples were collected from 195 dairy farms located in 4 cities of northern China from May to September 2015...
November 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28859499/prevalence-and-molecular-typing-of-methicillin-resistant-staphylococcus-aureus-carrying-panton-valentine-leukocidin-gene
#12
Maryam Rahimpour Hesari, Ali Salehzadeh, Reza Kazemi Darsanaki
Panton-Valentine leukocidin (pvl) toxin is an important virulence factor of Staphylococcus aureus. The main genes are coa and spa for distinguishing and typing of S. aureus isolates. The aim of this study was to investigate antibiotic resistance, presence of mecA and pvl genes, as well as epidemiological typing of these isolates according to polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method in clinical sample isolated from Rasht city, Iran. A total of 250 clinical samples have been isolated from different hospitals...
September 1, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28834892/the-association-between-staphylococcus-aureus-nasal-colonization-and-symptomatic-infection-in-children-in-korea-where-st72-is-the-major-genotype-a-prospective-observational-study
#13
Sunghan Kang, Jina Lee, Mina Kim
This study was performed to investigate the concordance in terms of molecular characteristics and antimicrobial susceptibility between colonizing and clinical Staphylococcus aureus isolates obtained from children in Korea, where ST72 is the major genotype.This was a prospective observational descriptive study of culture-confirmed S aureus infections obtained from children ≤18 years old admitted to Asan Medical Center Children's Hospital in Seoul, Korea, from March 2014 to April 2015. Molecular studies including multilocus sequence typing (MLST), SCCmec typing, polymerase chain reaction amplification of the Panton-Valentine leukocidin (PVL) genes, and antibiotic susceptibility tests were performed on S aureus isolates obtained from nares and clinical specimens...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28828344/detection-of-panton-valentine-leukocidin-gene-isoforms-of-staphylococcus-aureus-isolates-in-al-zahra-hospital-isfahan-iran
#14
Seyed Asghar Havaei, Farkhondeh Poursina, Maryam Ahmadpour, Seyed Roholla Havaei, Meisam Ruzbahani
BACKGROUND: Panton-Valentine leukocidin (PVL) is a gamma-toxin produced by Staphylococcus aureus encoded by genes lukS/lukF-PV with several single-nucleotide polymorphisms. A mutation at nucleotide position 527 results in substitution of histidine (H) to arginine (R) at amino acid 176. The groups defined based on the amino acid change, the "R isoform" group and the "H isoform" group. The purpose of this study was to determine the frequency of PVL gene isoforms in S. aureus strains isolated from patients at Al-Zahra Hospital Isfahan and molecular characterization of PVL-positive methicillin-resistant S...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28828338/molecular-epidemiology-survey-of-staphylococcus-aureus-panton-valentine-leukocidin-positive-isolated-from-sanandaj-iran
#15
Abbas Manafi, Mazaher Khodabandehloo, Samaneh Rouhi, Rashid Ramazanzadeh, Babak Shahbazi, Hanar Narenji
BACKGROUND: Staphylococcus aureus strains that are Panton-Valentine leukocidin (PVL) positive cause severe skin and soft tissue infections as well as necrotizing pneumonia. The presence of PVL gene is a marker for methicillin-resistant S. aureus; therefore, survey on prevalence and phylogenetic distribution of PVL is of great importance for public health. The aim of this research was molecular epidemiology survey of S. aureus PVL positive, isolated from two tertiary hospitals of Sanandaj...
2017: Advanced Biomedical Research
https://www.readbyqxmd.com/read/28826854/nasal-methicillin-resistant-staphylococcus-aureus-colonization-among-otherwise-healthy-children-aged-between-2-months-and-5-years-in-northern-taiwan-2005-2010
#16
Meng-Shan Tsai, Chih-Jung Chen, Tzou-Yien Lin, Yhu-Chering Huang
BACKGROUND: Community-associated methicillin-resistant Staphylococcus aureus (CA-MRSA) infections have been increasingly reported worldwide and are associated with nasal colonization. In Taiwan, available data disclosed a similar trend. We conducted a study for the updated childhood nasal MRSA carriage. METHODS: From July 2005 to December 2010, children aged between 2 months and 5 years who presented for a well-child health care visit to a medical center or from kindergarten/daycare center were invited and a nasal swab specimen was obtained for the detection of MRSA...
August 12, 2017: Journal of Microbiology, Immunology, and Infection, Wei Mian Yu Gan Ran za Zhi
https://www.readbyqxmd.com/read/28816638/high-prevalence-of-multidrug-resistant-community-acquired-methicillin-resistant-staphylococcus-aureus-at-the-largest-veterinary-teaching-hospital-in-costa-rica
#17
Irene Rojas, Elías Barquero-Calvo, Joany C van Balen, Norman Rojas, Lohendy Muñoz-Vargas, Armando E Hoet
Methicillin-resistant Staphylococcus aureus (MRSA) is a pathogen associated with severe infections in companion animals present in the community, and it is diagnosed in animals admitted to veterinary hospitals. However, reports that describe the circulation of MRSA in animal populations and veterinary settings in Latin America are scarce. Therefore, the objective of this study was to determine the prevalence and investigate the molecular epidemiology of MRSA in the environment of the largest veterinary teaching hospital in Costa Rica...
September 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28815486/staphylococcus-aureus-carriage-in-french-athletes-at-risk-of-ca-mrsa-infection-a-prospective-cross-sectional-study
#18
E Couvé-Deacon, D Postil, O Barraud, C Duchiron, D Chainier, A Labrunie, N Pestourie, P M Preux, B François, M C Ploy
BACKGROUND: Staphylococcus aureus (SA) is a leading cause of infectious diseases in sports teams. In recent decades, community-associated SA (CA-SA) strains have emerged worldwide and have been responsible for outbreaks in sports teams. There are very few data on the prevalence of these strains in France, and none on the carriage among athletes. METHODS: We conducted a cross-sectional study to determine the SA carriage proportion among athletes practicing sports at risk for CA-SA infection in a French county, and determined the methicillin-resistant and/or CA-SA proportion...
August 16, 2017: Sports Medicine—Open
https://www.readbyqxmd.com/read/28783418/diagnosis-and-management-of-panton-valentine-leukocidin-toxin-associated-staphylococcus-aureus-infection-an-update
#19
Yamuna Devi Bakthavatchalam, Laura E B Nabarro, Ravikar Ralph, Balaji Veeraraghavan
The incidence of invasive Staphylococcus aureus (SA) infection has increased in the past decade and is associated with poor outcomes and high mortality rates. Of all the virulence factors, Panton-Valentine Leukocidin (PVL) has received the greatest attention. PVL producing SA strains are more likely to produce severe skin and soft tissue infections (SSTIs) and necrotizing pneumonia. This review focuses on the current evidence on PVL-SA virulence, epidemiology, clinical disease and treatment with relevance to healthcare in India...
August 7, 2017: Virulence
https://www.readbyqxmd.com/read/28780098/prevalence-and-characterization-of-methicillin-resistant-staphylococcus-aureus-carrying-meca-or-mecc-and-methicillin-susceptible-staphylococcus-aureus-in-dairy-sheep-farms-in-central-italy
#20
G Giacinti, V Carfora, A Caprioli, D Sagrafoli, N Marri, G Giangolini, R Amoruso, M Iurescia, F Stravino, S Dottarelli, F Feltrin, A Franco, S Amatiste, A Battisti
Between January and May 2012, a total of 286 bulk tank milk samples from dairy sheep farms located in central Italy were tested for the presence of Staphylococcus aureus. One hundred fifty-three samples were positive for S. aureus (53.5%), with an average count of 2.53 log cfu/mL. A total of 679 S. aureus colonies were screened for methicillin resistance by the cefoxitin disk diffusion test, and 104 selected cefoxitin-susceptible isolates were also tested for their susceptibility to other antimicrobials representative of the most relevant classes active against Staphylococcus spp...
August 2, 2017: Journal of Dairy Science
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