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European Journal of Microbiology & Immunology

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https://www.readbyqxmd.com/read/29997912/peroral-low-dose-toxoplasma-gondii-infection-of-human-microbiota-associated-mice-a-subacute-ileitis-model-to-unravel-pathogen-host-interactions
#1
Markus M Heimesaat, Ulrike Escher, Anne Grunau, Ulrike Fiebiger, Stefan Bereswill
Within 1 week following high-dose Toxoplasma gondii infection, mice develop lethal necrotizing ileitis. However, data from a subacute T. gondii-induced ileitis model are scarce. Therefore, mice harboring a human gut microbiota were perorally infected with one cyst of T. gondii. Within 9 days post-infection, the intestinal microbiota composition shifted towards higher loads of commensal enterobacteria and enterococci. Following T. gondii infection, mice were clinically only mildly affected, whereas ≈60% of mice displayed fecal blood and mild-to-moderate ileal histopathological changes...
June 25, 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29997911/diagnostics-as-prevention-a-rapid-testing-based-strategy-of-sex-workers-against-sexual-hiv-exposure
#2
Andreas Hahn, Rebecca Hinz, Thomas Meyer, Ulrike Loderstädt, Ottmar Herchenröder, Christian G Meyer, Norbert Georg Schwarz, Hagen Frickmann
Introduction: German sex workers have illegally established a prevention strategy, which consists of testing potential sexual partners with human immunodeficiency virus (HIV)-specific rapid diagnostic tests (RDTs) prior to engaging in unprotected sexual intercourse eventually performed in case of a negative test result. Based on a recently established modeling approach, the effectiveness of this strategy regarding the risk of HIV exposure was compared with protection provided by condom use...
June 25, 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29997910/effects-of-live-and-heat-inactivated-e-coli-strains-and-their-supernatants-on-immune-regulation-in-ht-29-cells
#3
Christian Zimmermann, Marius Schild, Clemens Kunz, Kurt Zimmermann, Sabine Kuntz
Probiotics are considered to have a beneficial impact on humans, but in some cases, administration of live microorganisms might be risky. In the present study, immunomodulatory effects of different Escherichia coli strains and their super-natants were examined under different inflammatory conditions with living and heat-inactivated strains. HT-29 cells were incubated with E. coli strains (S2-G1, S2-G3, S2-G4 and S2-G8) and their supernatants with or without stimulation with tumor necrosis factor alpha (TNF-α) or interleukin (IL)-1β...
June 25, 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29997909/anti-inflammatory-effects-of-the-octapeptide-nap-in-human-microbiota-associated-mice-suffering-from-subacute-ileitis
#4
Ulrike Escher, Eliezer Giladi, Ildikò R Dunay, Stefan Bereswill, Illana Gozes, Markus M Heimesaat
The octapeptide NAP is well known for its neuroprotective properties. We here investigated whether NAP treatment could alleviate pro-inflammatory immune responses during experimental subacute ileitis. To address this, mice with a human gut microbiota were perorally infected with one cyst of Toxoplasma gondii (day 0) and subjected to intraperitoneal synthetic NAP treatment from day 1 until day 8 postinfection (p.i.). Whereas placebo (PLC) control animals displayed subacute ileitis at day 9 p.i., NAP-treated mice exhibited less pronounced pro-inflammatory immune responses as indicated by lower numbers of intestinal mucosal T and B lymphocytes and lower interferon (IFN)- γ concentrations in mesenteric lymph nodes...
June 25, 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29997908/impact-of-mrsa-on-the-military-medical-service-and-diagnostic-point-of-care-options-for-the-field-setting
#5
REVIEW
Hagen Frickmann
Methicillin-resistant Staphylococcus aureus (MRSA) poses an infection risk for international military deployments. In the presented mini-review, the history of MRSA in the medical service and modern warfare is highlighted. To allow rapid diagnosis, various molecular diagnostic point-of-care solutions are available. Most evaluation studies, however, are focused on screening swabs rather than clinical materials and evaluation data from harsh environments are widely lacking. Accordingly, studies with complex sample materials under difficult environmental conditions, e...
June 25, 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29760962/phenotypic-and-molecular-identification-of-vancomycin-resistance-in-clinical-staphylococcus-aureus-isolates-in-osogbo-nigeria
#6
Bosede Titilope Bamigboye, Olugbenga Adekunle Olowe, Samuel Sunday Taiwo
The use of vancomycin for treatment of serious infections caused by MRSA strains has resulted in emergence of vancomycin-resistant Staphylococcus aureus (VRSA) in clinical settings. Following our previous report of phenotypic VRSA in Nigeria, the current study attempts to determine the genetic basis underlying this resistance. Over a period of 6 months, non-duplicate clinical S. aureus isolates from 73 consecutive patients with infective conditions at Ladoke Akintola University of Technology Teaching Hospital, Osogbo were tested against a panel of eight selected antibiotics by disk diffusion test...
April 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29760961/ctx-m-15-is-established-in-most-multidrug-resistant-uropathogenic-enterobacteriaceae-and-pseudomonaceae-from-hospitals-in-nigeria
#7
David Olusoga Ogbolu, O A Terry Alli, Mark Alexander Webber, Adeolu Sunday Oluremi, Omoboriowo Moses Oloyede
β-Lactam antibiotics are widely used to treat urinary tract infections in Nigeria. This study aimed to determine the presence and characteristics of extended spectrum β-lactamases in commonly isolated uropathogenic Gram-negative bacteria (GNB) in Nigeria. Fifty non-duplicate GNB isolates consisting of Escherichia coli , 19; Klebsiella pneumoniae , 21; and Pseudomonas aeruginosa , 10 were obtained from three tertiary hospitals in Nigeria. The antibiotic susceptibility testing of all isolates to a panel of antibiotics including minimum inhibitory concentrations (MICs) and extended spectrum β-lactamases was determined...
April 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29760960/biochemical-and-molecular-screening-of-varieties-of-chili-plants-that-are-resistant-against-fusarium-wilt-infection
#8
Sobiya Shafique, Shazia Shafique, Aqeel Ahmad
Pakistan holds the position of top chilies producers. So Capsicum annuum L. production in Pakistan should be promoted by combating against diseases. The only solution is to cultivate resistant varieties. Presently six chili varieties were treated with Fusarium oxysporum Schlecht. and screened for the most resistant and the most susceptible varieties. Representative varieties were evaluated for their biochemical and transcriptional profiles to discover the bases of antifungal-resistance. Results concluded that the most resistant variety was "Dandicut" and the most susceptible was "Ghotki"...
April 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29760959/molecular-epidemiology-of-multidrug-resistant-bacteria-isolated-from-libyan-and-syrian-patients-with-war-injuries-in-two-bundeswehr-hospitals-in-germany
#9
Hagen Frickmann, Thomas Köller, Ralf Matthias Hagen, Klaus-Peter Ebert, Martin Müller, Werner Wenzel, Renate Gatzer, Ulrich Schotte, Alfred Binder, Romy Skusa, Philipp Warnke, Andreas Podbielski, Christian Rückert, Bernd Kreikemeyer
Introduction: We assessed the molecular epidemiology of multidrug-resistant bacteria colonizing or infecting war-injured patients from Libya and Syria who were treated at the Bundeswehr hospitals Hamburg and Westerstede, Germany. Methods: Enterobacteriaceae and Gram-negative rod-shaped nonfermentative bacteria with resistance against third-generation methoxyimino cephalosporins or carbapenems as well as methicillin-resistant Staphylococcus aureus (MRSA) from war-injured patients from Libya and Syria were assessed by molecular typing, i...
April 2018: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403660/equivalent-performance-of-the-cobas-%C3%A2-cdiff-test-for-use-on-the-cobas-%C3%A2-liat-%C3%A2-system-and-the-cobas-%C3%A2-4800-system
#10
Sachin K Garg, Kyle Lu, John Duncan, Lance R Peterson, Oliver Liesenfeld
Clostridium difficile infection is a significant health burden, and innovative solutions are needed to shorten time to diagnosis and improve infection control. We evaluated the performance of the cobas® Cdiff test for use on the cobas® Liat® System (cobas® Liat® Cdiff), a single-sample, on-demand, and automated molecular solution with a 20-min turnaround time. The limit of detection was 45-90 colony-forming units (CFUs)/swab for toxigenic strains that covered the most prevalent toxinotypes, including the hyper-virulent epidemic 027/BI/NAP1 strain...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403659/-toxoplasma-gondii-exposure-and-neurological-disorders-an-age-and-gender-matched-case-control-pilot-study
#11
Cosme Alvarado-Esquivel, Yazmin Del Rosario Rico-Almochantaf, Jesús Hernández-Tinoco, Gerardo Quiñones-Canales, Luis Francisco Sánchez-Anguiano, Jorge Torres-González, Björn Schott, Oliver Liesenfeld, Ildiko Rita Dunay
Little is known about the association of Toxoplasma gondii infection and neurological disorders. We performed a case-control study with 344 patients with neurological diseases and 344 neurologically healthy age- and gender-matched subjects. Sera of participants were analyzed for anti- T . gondii IgG and IgM antibodies using commercially available immunoassays. Anti- T . gondii IgG antibodies were detected in 25 (7.3%) cases and in 35 (10.2%) controls (odds ratio [OR] = 0.69; 95% confidence interval [CI]: 0...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403658/antimicrobial-resistance-transducing-bacteriophages-isolated-from-surfaces-of-equine-surgery-clinics-a-pilot-study
#12
Miriam Hilbert, Isabella Csadek, Ulrike Auer, Friederike Hilbert
In the past, the horizontal transfer of antimicrobial resistance genes was mainly associated with conjugative plasmids or transposons, whereas transduction by bacteriophages was thought to be a rare event. In order to analyze the likelihood of transduction of antimicrobial resistance in the field of clinical veterinary medicine, we isolated phages from Escherichia coli from a surgery suite of an equine clinic. In a pilot study, the surgery suite of a horse clinic was sampled directly after surgery and subsequently sampled after cleaning and disinfection following a sampling plan based on hygiene, surgery, and anesthesia...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403657/on-the-role-of-enterococci-in-the-bloodstream-results-of-a-single-center-retrospective-observational-study-at-a-german-university-hospital
#13
Hagen Frickmann, Kerstin Köller, Irina Veil, Mirjam Weise, Alicja Ludyga, Norbert Georg Schwarz, Philipp Warnke, Andreas Podbielski
This study assesses the clinical relevance of vancomycin-susceptible enterococci in bacteremic patients and compares it with bacteremia due to Staphylococcus aureus and Escherichia coli . During a 5-year-study interval, clinical and diagnostic features of patients with enterococcal bacteremia were compared to those of patients with E. coli or S. aureus bacteremia. Each patient was only counted once per hospital stay. During the 5-year study interval, data from 267 patients with enterococcal bacteremia and from 661 patients with bacteremia due to E...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403656/seroepidemiology-of-infection-with-neospora-caninum-leptospira-and-bovine-herpesvirus-type-1-in-water-buffaloes-bubalus-bubalis-in-veracruz-mexico
#14
Dora Romero-Salas, Cosme Alvarado-Esquivel, Gladys Domínguez-Aguilar, Anabel Cruz-Romero, Nelly Ibarra-Priego, Carolina Barrientos-Salcedo, Mariel Aguilar-Domínguez, Rodolfo Canseco-Sedano, Luz Teresa Espín-Iturbe, Luis Francisco Sánchez-Anguiano, Jesús Hernández-Tinoco, Adalberto A Pérez de León
We aimed to determine the seroprevalence of infection with Neospora caninum, Leptospira , and bovine herpesvirus type 1 and risk factors associated with these infections in water buffaloes in Veracruz State, Mexico. Through a cross-sectional study, 144 water buffaloes (Bubalus bubalis) raised in 5 ranches of Veracruz were examined for anti-N. caninum and anti-bovine herpesvirus type 1 antibodies by enzyme immunoassays, and anti-Leptospira interrogans antibodies by microscopic agglutination test. Of the 144 buffaloes studied, 35 (24...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403655/influence-of-broth-enrichment-as-well-as-storage-and-transport-time-on-the-sensitivity-of-mrsa-surveillance-in-the-tropics
#15
Hagen Frickmann, Andreas Hahn, Norbert Georg Schwarz, Ralf Matthias Hagen, Denise Dekker, Rebecca Hinz, Volker Micheel, Benedikt Hogan, Jürgen May, Raphael Rakotozandrindrainy
Direct growth on blood and screening agar for methicillin-resistant Staphylococcus aureus (MRSA) at a tropical surveillance site was compared with broth enrichment and subsequent growth on selective MRSA agar after international sample transport. In Madagascar, 1548 swabs from an MRSA surveillance study were assessed for growth on Columbia blood agar enriched with 5% sheep blood and MRSA screening agar at the surveillance site with subsequent cold storage of the samples and shipment to Germany. In Germany, 1541 shipped samples were analyzed by non-selective broth enrichment with subsequent culture on MRSA selective agar...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403654/seroprevalence-of-chlamydophila-psittaci-among-employees-of-two-german-duck-farms
#16
Raimond Lugert, Uwe Groß, Wycliffe O Masanta, Gunter Linsel, Astrid Heutelbeck, Andreas E Zautner
Psittacosis is a zoonotic infectious disease that is caused by Chlamydophila psittaci. To determine the occupational risk of getting the infection, we investigated the seroprevalence of C. psittaci among employees of two German duck farms and two slaughterhouses according to their level of exposure to the pathogen during the years 2010, 2007, and 2004. In summary, we found low seroprevalence (≈ 8%) throughout the study population almost irrespective of the duty of a given worker. Surprisingly, in 2010, the anti- C ...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403653/prevalence-of-gram-negative-bacilli-isolated-from-the-equipment-and-surfaces-in-hospital-wards-of-golestan-province-north-of-iran
#17
Ali Asghar Ayatollahi, Abolfazl Amini, Somayeh Rahimi, Saeid Rahbar Takrami, Reza Kazemi Darsanaki, Muhammad Sadeqi Nezhad
Nosocomial infections are one of the most common causes of death in hospitals. This study aimed to determine the prevalence of gram-negative bacilli isolated from the equipment in hospital wards of the Golestan province, in the year 2015. In this cross-sectional study in 2015, 1980 samples from medical and nonmedical equipment and surfaces were collected from the wards of 13 teaching hospitals, in the Golestan province. Samples were inoculated into eosin methylene blue agar and blood agar culture media and isolated colonies were identified by standard biochemical tests...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29403652/high-level-of-specific-anti-plasmodium-falciparum-merozoite-igg1-antibodies-in-rural-asymptomatic-individuals-of-dienga-south-eastern-gabon
#18
Irène Pegha-Moukandja, Roméo-Karl Imboumy-Limoukou, Nina Tchitoula-Makaya, Augustin-Ghislain Mouinga-Ondeme, Jean Claude Biteghe-Bi-Essone, Dieudonne Nkoghe Mba, Jean-Bernard Lekana-Douki, Fousseyni S Toure Ndouo
Plasmodium falciparum merozoite antigens (PfMAgs) play an essential role in the development of immunity to malaria. Currently, P. falciparum: protein 113 (Pf 113), apical membrane antigen 1 (AMA1), erythrocyte binding antigens (EBA175), and reticulocyte binding protein homologue 5 (RH5) are among the most PfMAgs studied. A comparative analysis of naturally acquired antibodies against these antigens in children would increase our knowledge about the development of protective immunity. Analysis of antibodies to Pf113, PfAMA1, PfEBA175, and PfRH5 was conducted in rural population during 2013 and 2014...
December 18, 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29034113/low-neurotoxicity-of-onx-0914-supports-the-idea-of-specific-immunoproteasome-inhibition-as-a-side-effect-limiting-therapeutic-strategy
#19
Laura von Brzezinski, Paula Säring, Peter Landgraf, Clemens Cammann, Ulrike Seifert, Daniela C Dieterich
Application of the proteasome inhibitor Bortezomib for the treatment of haematopoietic malignancies such as multiple myeloma significantly improves the average overall survival of patients. However, one of the most severe side effects is the development of peripheral neuropathies caused by neurotoxic effects of Bortezomib limiting its therapeutic efficacy. With ONX-0914 a specific inhibitor of the β5i (LMP7)-immunosubunit containing proteasomes was developed that targets exclusively the proteasome subtypes mainly expressed in immune cells including B lymphocytes as the origin of multiple myeloma...
September 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/29034112/lack-of-association-between-cytomegalovirus-infection-and-hypertensive-disorders-in-pregnancy-a-case-control-study-in-durango-mexico
#20
Cosme Alvarado-Esquivel, Ada A Sandoval-Carrillo, Fernando Vazquez-Alaniz, José M Salas-Pacheco, Jesús Hernández-Tinoco, Luis Francisco Sánchez-Anguiano, Elizabeth Irasema Antuna-Salcido
It is not clear whether infection with cytomegalovirus (CMV) is associated with hypertensive disorders in pregnant women. Through a case-control study design, 146 women suffering from hypertensive disorders in pregnancy (cases) and 146 age-matched normotensive pregnant women (controls) were examined for the presence of anti-CMV IgG and IgM antibodies with enzyme-linked immunoassays. IgM seropositive samples were further assayed by enzyme-linked fluorescent assay (ELFA). Anti-CMV IgG antibodies were found in 138 (94...
September 2017: European Journal of Microbiology & Immunology
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