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https://www.readbyqxmd.com/read/28329242/vaccination-induces-cd4-t-cell-mediated-mortality-during-staphylococcus-aureus-bacteremia
#1
Hatice Karauzum, Christian C Haudenschild, Ian N Moore, Mahta Mahmoudieh, Daniel L Barber, Sandip K Datta
Multiple candidate vaccines against Staphylococcus aureus infections have failed in clinical trials. Analysis of a recent prematurely halted vaccine trial revealed increased mortality among vaccine recipients who developed post-surgical S. aureus infection, emphasizing the potential for induction of detrimental immune responses and the need to better understand the requirements for protective immunity against S. aureus. These failures of single antigen vaccines have prompted ongoing development of multi-component vaccines to target the multitude of S...
February 21, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28329222/effect-of-daptomycin-dose-on-the-outcome-of-vancomycin-resistant-daptomycin-susceptible-enterococcus-faecium-bacteremia
#2
Yu-Chung Chuang, Hsin-Yi Lin, Pao-Yu Chen, Chi-Ying Lin, Jann-Tay Wang, Yee-Chun Chen, Shan-Chwen Chang
Background.: Treatment options for vancomycin-resistant enterococci (VRE) bloodstream infection (BSI) are limited. Daptomycin, although not currently approved for this indication, is frequently used for the treatment of VRE-BSI. Its optimal dose still needs to be determined. Methods.: We conducted a prospective, observational, cohort study during 2010-2015. We included patients who received a daptomycin dose of ≥6 mg/kg for the treatment of VRE-BSI caused by daptomycin-susceptible VRE...
January 25, 2017: Clinical Infectious Diseases: An Official Publication of the Infectious Diseases Society of America
https://www.readbyqxmd.com/read/28326205/shigella-sonnei-bacteremia-presenting-with-profound-hepatic-dysfunction
#3
Oluwaseun Shogbesan, Andrew Rettew, Bilal Shaikh, Abdullateef Abdulkareem, Anthony Donato
Worldwide, Shigellosis is a significant public health issue, associated with nearly one million deaths annually. About half a million cases of Shigella infection are reported annually in the United States. Shigella bacteremia is uncommon and generally seen in children and immunocompromised adults. We present a case of a Shigella sonnei bacteremia with marked hepatic derangement in a 27-year-old previously healthy homosexual male with history of Roux-en-Y gastric bypass, who presented to the emergency room with a 4-day history of loose watery stool, abdominal cramps, nausea and vomiting, and yellow skin of 2-day duration...
2017: Case Reports in Gastrointestinal Medicine
https://www.readbyqxmd.com/read/28326061/come-an-essential-response-regulator-negatively-regulates-the-expression-of-the-capsular-polysaccharide-locus-and-attenuates-the-bacterial-virulence-in-streptococcus-pneumoniae
#4
Yuqiang Zheng, Xuemei Zhang, Xiaofang Wang, Libin Wang, Jinghui Zhang, Yibing Yin
The capsular polysaccharide (CPS) of Streptococcus pneumoniae is the main virulence factors required for effective colonization and invasive disease. The capacity to regulate CPS production at the transcriptional level is critical for the survival of S. pneumoniae in different host niches, but little is known about the transcription regulators of cps locus. In the present study, we isolated and identified the response regulator ComE, the master competence switch in transformation of S. pneumoniae, as a transcriptional regulator of cps locus by DNA affinity chromatography-pulldown, MALDI-TOF mass spectrometry (MS) and electrophoretic mobility shift assay (EMSA)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28325577/-weissella-confusa-bacteremia-an-underestimated-opportunistic-pathogen
#5
S Aberkane, M-N Didelot, C Carrière, C Laurens, S Sanou, S Godreuil, H Jean-Pierre
No abstract text is available yet for this article.
March 18, 2017: Médecine et Maladies Infectieuses
https://www.readbyqxmd.com/read/28323886/contribution-of-urinary-tract-infection-to-the-burden-of-febrile-illnesses-in-young-children-in-rural-kenya
#6
Wechuli Geoffrey Masika, Wendy Prudhomme O'Meara, Thomas L Holland, Janice Armstrong
INTRODUCTION: The clinical features of UTI in young children may not localize to the urinary tract and closely resemble other febrile illnesses. In malaria endemic areas, a child presenting with fever is often treated presumptively for malaria without investigation for UTI. Delayed or inadequate treatment of UTI increases the risk of bacteremia and renal scarring in young children and subsequently complications as hypertension and end stage renal disease in adulthood. METHODS: A cross-sectional study was carried out in a hospital in western Kenya...
2017: PloS One
https://www.readbyqxmd.com/read/28322887/staphylococcus-aureus-bacteremia-in-patients-with-rheumatoid-arthritis-data-from-the-prospective-instinct-cohort
#7
Insa Joost, Achim Kaasch, Christine Pausch, Gabriele Peyerl-Hoffmann, Christian Schneider, Reinhard E Voll, Harald Seifert, Winfried V Kern, Siegbert Rieg
OBJECTIVES: Patients with rheumatoid arthritis (RA) are considered to be at increased risk of severe infections. We here describe the clinical characteristics, course and outcome of RA patients with Staphylococcus aureus bacteremia (SAB). METHODS: We conducted a post hoc analysis of data from a German bi-centre prospective SAB cohort study (period 2006-2014). Patients were followed-up for one year. Primary and secondary outcomes were survival time and osteoarticular infection (OAI)...
March 17, 2017: Journal of Infection
https://www.readbyqxmd.com/read/28321079/shewanella-algae-bacteremia-in-an-end-stage-renal-disease-patient-a-case-report-and-review-of-the-literature
#8
Tomoaki Takata, Hiroki Chikumi, Shota Morishita, Shintaro Hamada, Shotaro Hoi, Takuji Iyama, Takeaki Fukui, Tomomitsu Matono, Satoko Fukuda, Chishio Munemura, Hajime Isomoto
A 71-year-old man was admitted because of nausea and abdominal pain. He was receiving an erythropoiesis-stimulating agent for anemia and dysregulated iron metabolism due to stage G5 chronic kidney disease. He had a history of raw fish intake and was diagnosed with infectious enterocolitis, which worsened and led to septic shock. Shewanella putrefaciens grew in the blood culture, but Shewanella algae was identified in a 16S rRNA gene sequence analysis. We herein report a case of S. algae bacteremia believed to have been transmitted orally...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28321078/helicobacter-cinaedi-bacteremia-mimicking-a-flare-of-systemic-lupus-erythematosus
#9
Ruriko Nishida, Nobuyuki Shimono, Noriko Miyake, Yong Chong, Shinji Shimoda, Hiroshi Tsukamoto, Koichi Akashi
A 40-year-old woman with systemic lupus erythematosus (SLE) presented with high-grade fever and severe thrombocytopenia. Acalculous cholecystitis and thrombocytopenia were initially suspected to be complicated with SLE and vasculitis. Contrary to our expectation, however, the patient was finally diagnosed with Helicobacter cinaedi bacteremia. SLE patients show various symptoms, especially when their condition is complicated with vasculitis, which mimics H. cinaedi bacteremia. It is therefore difficult to provide a definite diagnosis...
2017: Internal Medicine
https://www.readbyqxmd.com/read/28320724/piperacillin-tazobactam-versus-other-antibacterial-agents-for-treatment-of-bloodstream-infections-due-to-ampc-beta-lactamase-producing-enterobacteriaceae
#10
Lucy Cheng, Brian C Nelson, Monica Mehta, Nikhil Seval, Sarah Park, Marla J Giddins, Qiuhu Shi, Susan Whittier, Angela Gomez-Simmonds, Anne-Catrin Uhlemann
In vivo induction of AmpC beta-lactamases produces high-level resistance to many beta-lactam antibiotics in Enterobacteriaceae, often resulting in the use of carbapenems or cefepime (FEP). The clinical effectiveness of piperacillin-tazobactam (TZP), a weak inducer of AmpC beta-lactamases, is poorly understood. Here we conducted a case-control study of adult inpatients with bloodstream infections (BSIs) due to Enterobacter, Serratia, or Citrobacter spp. from 2009 to 2015 to assess outcomes following treatment with TZP compared to FEP or meropenem (MEM)...
March 20, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28317027/the-type-a-and-type-b-polysaccharide-capsules-predominate-in-an-international-collection-of-invasive-kingella-kingae-isolates
#11
Eric A Porsch, Kimberly F Starr, Pablo Yagupsky, Joseph W St Geme
Kingella kingae is an encapsulated Gram-negative bacterium and an important etiology of osteoarticular infections in young children. A recent study examining a diverse collection of carrier and invasive K. kingae isolates from Israel revealed four distinct polysaccharide capsule types. In this study, to obtain a global view of K. kingae capsule type diversity, we examined an international collection of isolates using a multiplex PCR approach. The collection contained all four previously identified capsule types and no new capsule types...
March 2017: MSphere
https://www.readbyqxmd.com/read/28316844/aspergillus-pericarditis-with-tamponade-in-a-renal-transplant-patient
#12
Sylvia Biso, Rapeepat Lekkham, Antoinette Climaco
Aspergillus pericarditis is a rare and life-threatening infection in immunosuppressed patients. It has nonspecific clinical manifestations that often mimic other disease entities especially in patients who have extensive comorbidities. Diagnosis is oftentimes delayed and rarely done antemortem. A high degree of suspicion in immunocompromised patients is necessary for evaluation and timely diagnosis. This is a case of Aspergillus pericarditis with cardiac tamponade in a renal transplant patient with liver cirrhosis...
2017: Case Reports in Cardiology
https://www.readbyqxmd.com/read/28316631/potential-impact-of-rapid-blood-culture-testing-for-gram-positive-bacteremia-in-japan-with-the-verigene-gram-positive-blood-culture-test
#13
Ken Kikuchi, Mari Matsuda, Shigekazu Iguchi, Tomonori Mizutani, Keiichi Hiramatsu, Michiru Tega-Ishii, Kaori Sansaka, Kenta Negishi, Kimie Shimada, Jun Umemura, Shigeyuki Notake, Hideji Yanagisawa, Hiroshi Takahashi, Reiko Yabusaki, Hideki Araoka, Akiko Yoneyama
Background. Early detection of Gram-positive bacteremia and timely appropriate antimicrobial therapy are required for decreasing patient mortality. The purpose of our study was to evaluate the performance of the Verigene Gram-positive blood culture assay (BC-GP) in two special healthcare settings and determine the potential impact of rapid blood culture testing for Gram-positive bacteremia within the Japanese healthcare delivery system. Furthermore, the study included simulated blood cultures, which included a library of well-characterized methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant enterococci (VRE) isolates reflecting different geographical regions in Japan...
2017: Canadian Journal of Infectious Diseases & Medical Microbiology
https://www.readbyqxmd.com/read/28315686/crystal-structure-of-the-catalytic-domain-of-clostridium-perfringens-neuraminidase-in-complex-with-a-non-carbohydrate-based-inhibitor-2-cyclohexylamino-ethanesulfonic-acid
#14
Youngjin Lee, Hyung-Seop Youn, Jung-Gyu Lee, Jun Yop An, Kyoung Ryoung Park, Jung Youn Kang, Young Bae Ryu, Mi Sun Jin, Ki Hun Park, Soo Hyun Eom
Anti-bacterial and anti-viral neuraminidase agents inhibit neuraminidase activity catalyzing the hydrolysis of terminal N-acetylneuraminic acid (Neu5Ac) from glycoconjugates and help to prevent the host pathogenesis that lead to fatal infectious diseases including influenza, bacteremia, sepsis, and cholera. Emerging antibiotic and drug resistances to commonly used anti-neuraminidase agents such as oseltamivir (Tamiflu) and zanamivir (Relenza) have highlighted the need to develop new anti-neuraminidase drugs...
March 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28306338/the-epidemiology-of-childhood-salmonella-infections-in-alberta-canada
#15
Kate E Faulder, Kimberley Simmonds, Joan L Robinson
OBJECTIVES: The objectives were to describe the incidence, demographics, laboratory findings, and suspected sources of childhood Salmonella infections in Alberta, Canada, with a focus on preventable cases. METHODS: Data from Notifiable Disease Reports for children with nontyphoidal salmonellosis (NTS) or typhoid/paratyphoid fever from 2007 through 2015 were analyzed. RESULTS: NTS was detected from 2285 children. Bacteremia was documented in 55 cases (2...
March 17, 2017: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/28303129/there-is-a-method-to-the-madness-strategies-to-study-host-complement-evasion-by-lyme-disease-and-relapsing-fever-spirochetes
#16
REVIEW
Ashley L Marcinkiewicz, Peter Kraiczy, Yi-Pin Lin
Lyme disease and relapsing fever are caused by various Borrelia species. Lyme disease borreliae, the most common vector-borne pathogens in both the U.S. and Europe, are transmitted by Ixodes ticks and disseminate from the site of tick bites to tissues leading to erythema migrans skin rash, arthritis, carditis, and neuroborreliosis. Relapsing fever borreliae, carried by ticks and lice, trigger reoccurring fever episodes. Following transmission, spirochetes survive in the blood to induce bacteremia at the early stages of infection, which is thought to promote evasion of the host complement system...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28302165/bilateral-adrenal-hemorrhage-in-the-background-of-escherichia-coli-sepsis-a-case-report
#17
Jahanzaib Khwaja
BACKGROUND: Sepsis is a syndrome of life-threatening organ dysfunction caused by a dysregulated host response to infection. It can have devastating consequences, including bilateral adrenal hemorrhage, particularly in patients at high thrombotic risk, such as those with antiphospholipid syndrome and those on long-term anticoagulation. CASE PRESENTATION: A 49-year-old white woman re-presented to hospital with a history suggestive of sepsis. She had a medical background of primary antiphospholipid syndrome on lifelong warfarin...
March 17, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28299457/current-trends-of-human-infections-and-antibiotic-resistance-of-the-genus-shewanella
#18
REVIEW
K Yousfi, S Bekal, V Usongo, A Touati
Shewanella spp. are commonly known as environmental bacteria and are most frequently isolated from aquatic areas. Currently, diseases syndromes and multidrug resistance have increasingly been reported in the genus Shewanella. Some species are associated with various infections, such as skin and soft tissue infections, as well as bacteremia. Generally, these bacteria are opportunistic and mostly affect people with an impaired immune system. This genus is also a probable vehicle and progenitor of antibiotic resistance genes...
March 15, 2017: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/28298909/fingerprint-analysis-and-identification-of-strains-st309-as-a-potential-high-risk-clone-in-a-pseudomonas-aeruginosa-population-isolated-from-children-with-bacteremia-in-mexico-city
#19
Rosario Morales-Espinosa, Gabriela Delgado, Luis F Espinosa, Dassaev Isselo, José L Méndez, Cristina Rodriguez, Guadalupe Miranda, Alejandro Cravioto
Pseudomonas aeruginosa is an opportunistic pathogen and is associated with nosocomial infections. Its ability to thrive in a broad range of environments is due to a large and diverse genome of which its accessory genome is part. The objective of this study was to characterize P. aeruginosa strains isolated from children who developed bacteremia, using pulse-field gel electrophoresis, and in terms of its genomic islands, virulence genes, multilocus sequence type, and antimicrobial susceptibility. Our results showed that P...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28296584/intestinal-microbiota-and-relapse-after-hematopoietic-cell-transplantation
#20
Jonathan U Peled, Sean M Devlin, Anna Staffas, Melissa Lumish, Raya Khanin, Eric R Littmann, Lilan Ling, Satyajit Kosuri, Molly Maloy, John B Slingerland, Katya F Ahr, Kori A Porosnicu Rodriguez, Yusuke Shono, Ann E Slingerland, Melissa D Docampo, Anthony D Sung, Daniela Weber, Amin M Alousi, Boglarka Gyurkocza, Doris M Ponce, Juliet N Barker, Miguel-Angel Perales, Sergio A Giralt, Ying Taur, Eric G Pamer, Robert R Jenq, Marcel R M van den Brink
Purpose The major causes of mortality after allogeneic hematopoietic-cell transplantation (allo-HCT) are relapse, graft-versus-host disease (GVHD), and infection. We have reported previously that alterations in the intestinal flora are associated with GVHD, bacteremia, and reduced overall survival after allo-HCT. Because intestinal bacteria are potent modulators of systemic immune responses, including antitumor effects, we hypothesized that components of the intestinal flora could be associated with relapse after allo-HCT...
March 15, 2017: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
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