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Toxic shock syndrome

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https://www.readbyqxmd.com/read/28917022/epidemiology-pathogenesis-and-management-of-takotsubo-syndrome
#1
REVIEW
Shams Y-Hassan, Per Tornvall
Takotsubo syndrome is a recently recognized acute cardiac disease entity with a clinical presentation resembling that of an acute coronary syndrome. The typical takotsubo syndrome patient has a unique circumferential left (bi-) ventricular contraction abnormality profile that extends beyond a coronary artery supply territory and appears to follow the anatomical cardiac sympathetic innervation. The syndrome predominantly affects postmenopausal women and is often preceded by emotional or physical stress. Patients with predisposing factors such as malignancy and other chronic comorbidities are more prone to suffer from takotsubo syndrome...
September 15, 2017: Clinical Autonomic Research: Official Journal of the Clinical Autonomic Research Society
https://www.readbyqxmd.com/read/28894448/sirtuin-2-deficiency-increases-bacterial-phagocytosis-by-macrophages-and-protects-from-chronic-staphylococcal-infection
#2
Eleonora Ciarlo, Tytti Heinonen, Charlotte Théroude, Jacobus Herderschee, Matteo Mombelli, Jérôme Lugrin, Marc Pfefferlé, Beatrice Tyrrell, Sarah Lensch, Hans Acha-Orbea, Didier Le Roy, Johan Auwerx, Thierry Roger
Sirtuin 2 (SIRT2) is one of the seven members of the family of NAD(+)-dependent histone deacetylases. Sirtuins target histones and non-histone proteins according to their subcellular localization, influencing various biological processes. SIRT2 resides mainly in the cytoplasm and regulates cytoskeleton dynamics, cell cycle, and metabolic pathways. As such, SIRT2 has been implicated in the pathogenesis of neurodegenerative, metabolic, oncologic, and chronic inflammatory disorders. This motivated the development of SIRT2-directed therapies for clinical purposes...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28892185/prevalence-comorbidities-and-mortality-of-toxic-shock-syndrome-in-united-states-children-and-adults
#3
Mark A Strom, Derek Y Hsu, Jonathan I Silverberg
Toxic Shock Syndrome (TSS) is a superantigen-mediated illness characterized by rash, hypotension and multi-organ dysfunction. The predictors of TSS and related morbidity and mortality are poorly defined. We analyzed data on 61,959,084 hospitalizations from the 2003-2012 Nationwide Inpatient Sample, a 20% stratified sample of US hospitalizations. ICD-9-CM coding was used to identify 4,491 hospitalizations with a diagnosis of TSS. Incidence, in-hospital mortality rate, comorbidities, length of stay and costs of care due to TSS were determined...
September 11, 2017: Microbiology and Immunology
https://www.readbyqxmd.com/read/28882472/overwhelming-streptococcus-pyogenes-sepsis-in-an-elderly-patient-with-septic-arthritis
#4
Aarti Chadha, Wafaa Jamal, Abdul Raouf Abdul Aziz, Vincent O Rotimi
INTRODUCTION: The signs of Streptococcus pyogenes, group A streptococci (GAS) bacteremia are non-specific and patients can have wide presentations ranging from flu-like symptoms to life-threatening toxic-shock syndrome in just a few hours. CASE PRESENTATION: We report a case of fulminant S. pyogenes sepsis in an elderly woman with septic arthritis and remarkable past medical history/risk factors. She was febrile, hypotensive and had a swollen and tender right knee...
September 4, 2017: Journal of Infection and Public Health
https://www.readbyqxmd.com/read/28880920/the-staphylococcus-aureus-superantigen-selx-is-a-bifunctional-toxin-that-inhibits-neutrophil-function
#5
Stephen W Tuffs, David B A James, Jovanka Bestebroer, Amy C Richards, Mariya I Goncheva, Marie O'Shea, Bryan A Wee, Keun Seok Seo, Patrick M Schlievert, Andreas Lengeling, Jos A van Strijp, Victor J Torres, J Ross Fitzgerald
Bacterial superantigens (SAgs) cause Vβ-dependent T-cell proliferation leading to immune dysregulation associated with the pathogenesis of life-threatening infections such as toxic shock syndrome, and necrotizing pneumonia. Previously, we demonstrated that staphylococcal enterotoxin-like toxin X (SElX) from Staphylococcus aureus is a classical superantigen that exhibits T-cell activation in a Vβ-specific manner, and contributes to the pathogenesis of necrotizing pneumonia. Here, we discovered that SElX can also bind to neutrophils from human and other mammalian species and disrupt IgG-mediated phagocytosis...
September 2017: PLoS Pathogens
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
#6
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/28867411/toxic-shock-syndrome-in-paediatric-thermal-injuries-a-case-series-and-systematic-literature-review
#7
Linda Gutzler, Clemens Schiestl, Martin Meuli, Carol Oliveira
BACKGROUND: Toxic shock syndrome (TSS) is a rare, but potentially life-threatening complication of thermal injuries in children. The study objective was to systematically review the literature on paediatric TSS after burns or scalds, and describe our experience with this condition in Switzerland. METHODS: All tertiary paediatric healthcare centres managing burns and scalds in Switzerland were inquired. A systematic literature review was performed using EMBASE (1947-2016), MEDLINE (1946-2016), Web of Science (1900-2016) and Google Scholar in October 2016...
August 31, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28803736/an-aggressive-and-fatal-craniofacial-group-a-streptococcus-infection-resulting-from-a-minimally-displaced-orbital-floor-fracture
#8
R M Uhrich, M Sherban, C Valdez
While sharp, penetrating trauma is often associated with group A Streptococcus (GAS) infections and subsequent necrotizing fasciitis (NF) and streptococcal toxic shock syndrome (STSS), there are scant reports in the oral and maxillofacial surgery literature regarding blunt, non-penetrating trauma in association with these conditions. With a clinical course that initially appears relatively benign following blunt trauma, NF can progress swiftly through the fascial planes and may quickly become life-threatening if the oral and maxillofacial surgeon fails to recognize some of the critical pathognomonic signs...
August 10, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28794279/nasopharyngeal-infection-by-streptococcus-pyogenes-requires-superantigen-responsive-v%C3%AE-specific-t-cells
#9
Joseph J Zeppa, Katherine J Kasper, Ivor Mohorovic, Delfina M Mazzuca, S M Mansour Haeryfar, John K McCormick
The globally prominent pathogen Streptococcus pyogenes secretes potent immunomodulatory proteins known as superantigens (SAgs), which engage lateral surfaces of major histocompatibility class II molecules and T-cell receptor (TCR) β-chain variable domains (Vβs). These interactions result in the activation of numerous Vβ-specific T cells, which is the defining activity of a SAg. Although streptococcal SAgs are known virulence factors in scarlet fever and toxic shock syndrome, mechanisms by how SAgs contribute to the life cycle of S...
August 9, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28791216/toxic-shock-syndrome-caused-by-suture-abscess-with-methicillin-resistant-staphylococcus-aureus-mrsa-with-late-onset-after-caesarean-section
#10
Hiroyasu Komuro, Takaharu Kato, Shinichiro Okada, Kensuke Nakatani, Risa Matsumoto, Kazuhiro Nishida, Hiroyuki Iida, Maki Iida, Shiro Tsujimoto, Toshiyuki Suganuma
Toxic shock syndrome (TSS) is a rare but life-threatening multisystem disease known to develop in the early postoperative period after various surgery. We report a rare case in which a patient who underwent Caesarean section developed TSS caused by methicillin-resistant Staphylococcus aureus (MRSA) on the 39th postoperative day. She was treated with debridement because of the possible diagnosis of necrotizing soft tissue infections. Culture test from the resected specimen was positive for MRSA. She was diagnosed with TSS caused by suture abscess and was treated with intensive care including antimicrobials...
2017: IDCases
https://www.readbyqxmd.com/read/28791185/use-of-hemadsorption-in-a-case-of-pediatric-toxic-shock-syndrome
#11
Andrea Berkes, Edit Szikszay, János Kappelmayer, Adrienne Kerényi, Tamás Szabó, László Ujhelyi, Krisztina Bari, György Balla, József Balla
BACKGROUND: Toxic shock syndrome is a potentially fatal toxin-mediated disease. The role of toxins in this clinical entity made us hypothesize that extracorporeal blood purification with CytoSorb® could play a beneficial role in the clinical management of toxic shock syndrome. This case report describes the successful treatment of toxic shock syndrome using a combination of renal replacement therapy and hemadsorption in a pediatric patient. CASE PRESENTATION: A 5-year-old girl with Down's syndrome presented with an inflamed area surrounding an insect bite, signs of systemic inflammation, and multiple organ failure...
2017: Case Reports in Critical Care
https://www.readbyqxmd.com/read/28790435/emergence-of-a-streptococcus-dysgalactiae-subspecies-equisimilis-stg62647-lineage-associated-with-severe-clinical-manifestations
#12
Oddvar Oppegaard, Haima Mylvaganam, Steinar Skrede, Paul Christoffer Lindemann, Bård Reiakvam Kittang
Increasing incidence rates of invasive Streptococcus dysgalactiae subspecies equisimilis (SDSE) infections have been reported worldwide, but the evolutionary mechanisms underlying this development remain elusive. Through prospective surveillance of invasive SDSE infections in western Norway, we observed the emergence of a novel and virulent SDSE genotype, stG62647. This emm-type, rarely encountered as a cause of invasive disease during 1999-2012, emerged in 2013 as the predominant SDSE-genotype. The stG62647-infections were associated with an aggressive clinical course, including the occurrence of streptococcal toxic shock syndrome, necrotizing soft-tissue infections and endocarditis...
August 8, 2017: Scientific Reports
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
#13
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
https://www.readbyqxmd.com/read/28777321/prevalence-and-genetic-characteristics-of-staphylococcus-aureus-and-staphylococcus-argenteus-isolates-harboring-panton-valentine-leukocidin-enterotoxins-and-tsst-1-genes-from-food-handlers-in-myanmar
#14
Meiji Soe Aung, Thida San, Mya Mya Aye, San Mya, Win Win Maw, Khin Nyein Zan, Wut Hmone Win Htut, Mitsuyo Kawaguchiya, Noriko Urushibara, Nobumichi Kobayashi
Asymptomatic carriers of toxigenic Staphylococcus aureus are potential source of diseases, including food poisoning. Toxigenic potential and genetic traits of colonizing S. aureus were investigated for 563 healthy food handlers in Myanmar. Carriage of S. aureus was found in 110 individuals (19.5%), and a total of 144 S. aureus isolates were recovered from nasal cavities (110 isolates) and hands (34 isolates). Panton-Valentine leucocidin genes (pvl) were detected in 18 isolates (12.5%), among which 11 isolates were classified into coa-VIa, agr type III, and ST1930 (CC96) that had been also detected in pvl-positive clinical isolates in Myanmar...
August 4, 2017: Toxins
https://www.readbyqxmd.com/read/28771160/staphylococcus-aureus-isolated-from-wastewater-treatment-plants-in-tunisia-occurrence-of-human-and-animal-associated-lineages
#15
Meriam Ben Said, Mohamed Salah Abbassi, Paula Gómez, Laura Ruiz-Ripa, Senda Sghaier, Chourouk Ibrahim, Carmen Torres, Abdennaceur Hassen
The objective was to characterize Staphylococcus aureus isolated from two wastewater treatment plants (WWTPs) located in Tunis City (Tunisia), during the period 2014-2015. Genetic lineages, antibiotic resistance mechanisms and virulence factors were determined for the recovered isolates. S. aureus isolates were recovered from 12 of the 62 wastewater samples tested (19.35%), and one isolate/sample was characterized, all of them being methicillin-susceptible (MSSA). Six spa types (t587, t674, t224, t127, t701 and t1534) were found among the 12 isolates, and the spa-t587, associated with the new sequence type ST3245, was the most predominant one (7 isolates)...
August 2017: Journal of Water and Health
https://www.readbyqxmd.com/read/28769806/a-red-blood-cell-membrane-camouflaged-nanoparticle-counteracts-streptolysin-o-mediated-virulence-phenotypes-of-invasive-group-a-streptococcus
#16
Tamara Escajadillo, Joshua Olson, Brian T Luk, Liangfang Zhang, Victor Nizet
Group A Streptococcus (GAS), an important human-specific Gram-positive bacterial pathogen, is associated with a broad spectrum of disease, ranging from mild superficial infections such as pharyngitis and impetigo, to serious invasive infections including necrotizing fasciitis and streptococcal toxic shock syndrome. The GAS pore-forming streptolysin O (SLO) is a well characterized virulence factor produced by nearly all GAS clinical isolates. High level expression of SLO is epidemiologically linked to intercontinental dissemination of hypervirulent clonotypes and poor clinical outcomes...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28762570/streptococcal-toxic-shock-syndrome-occurring-in-the-third-trimester-of-pregnancy-a-case-report
#17
Mohamad Irani, Rodney McLaren, Richard H Savel, Oksana Bogatyryova, Fady Khoury-Collado
Group A streptococcal (GAS) toxic shock syndrome (TSS) is a rare life-threatening illness. Most reported cases have occurred in the post-partum period. Here, we report a rare case of a primigravid who developed GAS TSS in the third trimester. We also review the potential preventive measures and treatment modalities for this syndrome. A 29-year-old primigravid presented at 36 weeks' gestation with diarrhea, abdominal pain, fever, and fetal bradycardia. She underwent an emergency cesarean section and was subsequently diagnosed with GAS TSS...
August 1, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28742082/bacterial-deception-of-mait-cells-in-a-cloud-of-superantigen-and-cytokines
#18
REVIEW
Johan K Sandberg, Anna Norrby-Teglund, Edwin Leeansyah
The bacterium Staphylococcus aureus is an important cause of the life-threatening condition toxic shock syndrome in humans. Bacterial toxins known as superantigens (SAgs) generate this illness by acting as broad activators of a substantial fraction of all T lymphocytes, bypassing the normally highly stringent T-cell receptor antigen specificity to cause a systemic inflammatory cytokine storm in the host. In a new study, Shaler et al. found that immune cells called mucosa-associated invariant T (MAIT) cells make an unexpectedly large contribution to the SAg response in a largely T-cell receptor-independent, cytokine-driven manner...
July 2017: PLoS Biology
https://www.readbyqxmd.com/read/28734577/characterization-of-a-pvl-negative-community-acquired-methicillin-resistant-staphylococcus-aureus-strain-of-sequence-type-88-in-china
#19
Lu Sun, Dandan Wu, Yan Chen, Qian Wang, Haiping Wang, Yunsong Yu
Sequence type 88 community-acquired methicillin-resistant Staphylococcus aureus (CA-MRSA) strain SR434, isolated from an outpatient with skin and soft tissue infection, was subjected to whole genome sequencing, antimicrobial susceptibility testing, mouse skin infection model and hemolysis analysis to identify its virulence and resistance determinants. MRSA strain SR434 is resistant to clindamycin, erythromycin and fosfomycin. Four plasmids with resistance genes were identified in this strain, including a 20,658bp blaZ-carrying plasmid, a 2473bp ermC-carrying plasmid, a 2622bp fosB7-carrying plasmid (86% identity with plasmid in a ST2590 MRSA strain) and a 4817bp lnuA-carrying plasmid (99% identity with pLNU4 from bovine coagulase-nagetive Staphylococci)...
July 13, 2017: International Journal of Medical Microbiology: IJMM
https://www.readbyqxmd.com/read/28725564/post-partum-streptococcal-toxic-shock-syndrome-associated-with-necrotizing-fasciitis
#20
Wei Chuan Chua, Mohd Zulfakar Mazlan, Saedah Ali, Sanihah Che Omar, Wan Mohd Nazaruddin Wan Hassan, S Praveena Seevaunnantum, Rhendra Hardy Mohd Zaini, Mohd Hasyizan Hassan, Alwi Muhd Besari, Zaidah Abd Rahman, Zeti Norfidiyati Salmuna Ayub, Sabrina Abd Ghani, Normalinda Yaacob, Wan Rosilawati Wan Rosli
We report a fatal case of post-partum streptococcal toxic shock syndrome in a patient who was previously healthy and had presented to the emergency department with an extensive blistering ecchymotic lesions over her right buttock and thigh associated with severe pain. The pregnancy had been uncomplicated, and the mode of delivery had been spontaneous vaginal delivery with an episiotomy. She was found to have septicemic shock requiring high inotropic support. Subsequently, she was treated for necrotizing fasciitis, complicated by septicemic shock and multiple organ failures...
2017: IDCases
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