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Acta Microbiologica et Immunologica Hungarica

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https://www.readbyqxmd.com/read/29250963/high-prevalence-of-staphylococcus-aureus-nasal-carriage-among-children-in-szolnok-hungary
#1
Krisztina Laub, Adrienn Tóthpál, Eszter Kovács, Judit Sahin-Tóth, Andrea Horváth, Szilvia Kardos, Orsolya Dobay
We collected nasal samples from 1,390 healthy 3-7 years old children in Szolnok city, Hungary, in 2012. We detected 476 Staphylococcus aureus isolates from 474 children. In two occasions, two different S. aureus were isolated, based on hemolysis type and pulsed-field gel electrophoresis pattern. S. aureus carriage rate was calculated to be 34.1% similar to others studies. Male gender was found to be a risk factor for carriage by statistical analysis. Altogether, four methicillin-resistant S. aureus (MRSA) strains were detected by mecA polymerase chain reaction, which means 0...
December 18, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29243495/the-recombinant-fusion-protein-cfp10-esat6-difn-has-protective-effect-against-tuberculosis-in-guinea-pigs
#2
Natalya V Permyakova, Pavel A Belavin, Dariya S Pirozhkova, Elena G Ufimtseva, Sergey M Rozov, Sergey R Mursalimov, Yuriy V Sidorchuk, Elena A Uvarova, Alla A Zagorskaya, Tatiana V Marenkova, Svetlana V Bannikova, Evgeniy A Demidov, Konstantin V Starostin, Marionella A Kravchenko, Diana V Vakhrusheva, Roman B Berdnikov, Natalya I Eremeeva, Sergey N Skornyakov, Sergey E Peltek, Elena V Deineko
Development of effective vaccine candidates against tuberculosis (TB) is currently the most important challenge in the prevention of this disease since the BCG vaccine fails to guarantee a lifelong protection, while any other approved vaccine with better efficiency is still absent. The protective effect of the recombinant fusion protein CFP10-ESAT6-dIFN produced in a prokaryotic expression system (Escherichia coli) has been assessed in a guinea pig model of acute TB. The tested antigen comprises the Mycobacterium tuberculosis (Mtb) proteins ESAT6 and CFP10 as well as modified human γ-interferon (dIFN) for boosting the immune response...
December 15, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29243494/does-subinhibitory-concentrations-of-clinically-important-antibiotic-induce-biofilm-production-of-enterococcus-faecium-strains
#3
Fatma Neslihan Yuksel, Neslihan Taskale Karatug, Mustafa Akcelik
Biofilm structures are the most resistant form of active microorganisms against sanitation, disinfection, and sterilization processes. One of the specific properties of biofilm is the development of antibiotic resistance that can be up to 1,000-fold greater than planktonic cells. Enterococcus faecium is a human pathogen that causes nosocomial bacteremia and at the present time, it is well known that most of the chronic infections are biofilm-based. Recent evidence suggested that subinhibitory concentrations (sub-MICs) of antibiotics have an important role in the evolution of antibiotic resistance and induction on biofilm formation...
December 15, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29243493/quorum-sensing-network-associated-gene-regulation-in-gram-positive-bacteria
#4
Goutam Banerjee, Arun Kumar Ray
Quorum sensing (QS) is the chemical communication processes between bacteria, which may be inter-genus or intra-genus. In general, several physiological functions, such as nutrient uptake, competence development, biofilm formation, sporulation, and toxin secretion, are accomplished through QS process. The QS (cell density-dependent process) circuit in Gram-positive bacteria consists mainly of two parts: an inducer molecule and a receptor protein. The binding of inducer molecule to receptor activates the target gene, which then performs the necessary function in bacteria...
December 15, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29239199/sequence-analysis-of-schmallenberg-virus-genomes-detected-in-hungary
#5
Enikő Fehér, Szilvia Marton, Ádám György Tóth, Krisztina Ursu, Kerstin Wernike, Martin Beer, Ádám Dán, Krisztián Bányai
Since its emergence near the German-Dutch border in 2011, Schmallenberg virus (SBV) has been identified in many European countries. In this study, we determined the complete coding sequence of seven Hungarian SBV genomes to expand our knowledge about the genetic diversity of circulating field strains. The samples originated from the first case, an aborted cattle fetus without malformation collected in 2012, and from the blood samples of six adult cattle in 2014. The Hungarian SBV sequences shared ≥99.3% nucleotide (nt) and ≥97...
December 14, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29239198/faecal-microbiota-transplantation-for-clostridium-difficile-infection-using-a-lyophilized-inoculum-from-non-related-donors-a-case-series-involving-19-patients
#6
Szabolcs Vigvári, Dávid Sipos, Jenő Solt, Áron Vincze, Béla Kocsis, Zsuzsanna Nemes, Ágnes Kappéter, Zsófia Feiszt, Beáta Kovács, Zoltán Péterfi
Faecal microbiota transplantation (FMT) has been reported to be effective in treating relapsing of refractory Clostridium difficile infections, although some practical barriers are limiting its widespread use. In this study, our objective was to evaluate the rate of resolution of diarrhea following administration of lyophilized and resolved FMT via a nasogastric (NG) tube. We recruited 19 patients suffered from laboratory-confirmed C. difficile infection. Each of them was treated by lyophilized and resolved inoculum through a NG tube...
December 14, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29210281/characterization-of-the-rhodococcus-sp-mk1-strain-and-its-pilot-application-for-bioremediation-of-diesel-oil-contaminated-soil
#7
Ágnes Erdeiné Kis, Krisztián Laczi, Szilvia Zsíros, Péter Kós, Roland Tengölics, Naila Bounedjoum, Tamás Kovács, Gábor Rákhely, Katalin Perei
Petroleum hydrocarbons and derivatives are widespread contaminants in both aquifers and soil, their elimination is in the primary focus of environmental studies. Microorganisms are key components in biological removal of pollutants. Strains capable to utilize hydrocarbons usually appear at the contaminated sites, but their metabolic activities are often restricted by the lack of nutrients and/or they can only utilize one or two components of a mixture. We isolated a novel Rhodococcus sp. MK1 strain capable to degrade the components of diesel oil simultaneously...
December 6, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29192510/aflatoxin-b1-detoxification-by-cell-free%C3%A2-extracts-of-rhodococcus-strains
#8
Anita Risa, Dalma Maja Divinyi, Erzsébet Baka, Csilla Krifaton
Aflatoxin B1 (AFB1) produced by Aspergillus molds is a genotoxic and carcinogenic mycotoxin. For the elimination of mycotoxins from food and feed, biodetoxification can be a successful tool. The aim of this study was to reveal biodetoxification with the cell-free extracts of Rhodococcus erythropolis NI1 and Rhodococcus rhodochrous NI2, which have been already proved to detoxify AFB1. Extracellular matrices of cultures and also intracellular extracts were applied for detoxification. In both cases, media containing constitutively produced and AFB1-induced enzymes were tested, respectively...
December 1, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29137487/emergence-of-fosfomycin-resistance-among-isolates-of-escherichia-coli-harboring-extended-spectrum-and-ampc-%C3%AE-lactamases
#9
Aghil Bahramian, Gita Eslami, Ali Hashemi, Ali Tabibi, Mohsen Heidary
Urinary tract infection (UTI) is a common type of infectious disease globally. The aim of this study was to detect the frequency of fosA3 and fosC2 genes in extended-spectrum β-lactamases (ESBL) and blaDHA, blaCMY-2, and blaCMY-42 genes in AmpC β-lactamases-producing isolates of Escherichia coli. In total, 120 isolates of E. coli were collected from three teaching hospitals between March 2014 and February 2015. Antibiotic susceptibility tests were carried out by disk diffusion method. The presence of blaCMY-2, blaCMY-42, blaDHA, fosA3, and fosC2 genes was detected by polymerase chain reaction (PCR) and sequencing...
November 15, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29106803/abstracts-of-the-5th-central-european-forum-for-microbiology-october-18-20-2017-keszthely-hungary
#10
(no author information available yet)
No abstract text is available yet for this article.
November 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29106802/abstracts-of-the-annual-meeting-of-the-hungarian-society-for-microbiology-october-19-21-2016-keszthely-hungary
#11
(no author information available yet)
No abstract text is available yet for this article.
November 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/29106799/abstracts-of-the-26th-semmelweis-symposium-2017-new-challenges-in-microbiology-9-10-november-2017-budapest-hungary
#12
(no author information available yet)
No abstract text is available yet for this article.
November 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28889758/maldi-tof-ms-versus-16s-rrna-sequencing-minor-discrepancy-between-tools-in-identification-of-bacteroides-isolates
#13
Károly Péter Sárvári, József Sóki, Miklós Iván, Cecilia Miszti, Krisztina Latkóczy, Szilvia Zsóka Melegh, Edit Urbán
Members of the genus Bacteroides are important components of the normal microbiota of gastrointestinal tract; however, as opportunistic pathogens are also associated with severe or even life-threatening infections with significant mortality. Various species within Bacteroides fragilis group are phenotypically very similar; thus, their identifications with traditional-automated biochemical methods are frequently inaccurate. The identification of the newly discovered or reclassified bacteria can be doubtful because of the lack of biochemical profile in the database of these tests...
September 11, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28870092/emergence-of-arma-and-rmtb-genes-among-vim-ndm-and-imp-metallo-%C3%AE-lactamase-producing-multidrug-resistant-gram-negative-pathogens
#14
Sangeetha Gopalakrishnan, Arunagiri Kamalanathan, Sivaranjani Rajan, Vijay Manohar Bhagat, M K Showkath Ali
In the recent years, it has been noted that microorganisms with acquired resistance to almost all available potent antibiotics are increasing worldwide. Hence, the use of antibiotics in every clinical setup has to be organized to avoid irrational use of antibiotics. This study was aimed to establish the pattern of antibiotic sensitivity and relevance of antimicrobial resistance in aerobic Gram-negative bacilli. A total of 103 aerobic Gram-negative bacteria namely Escherichia coli, Klebsiella pneumoniae, Enterobacter spp...
September 5, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28870091/high-prevalence-of-oxa-type-carbapenemases-among-acinetobacter-baumannii-strains-in-a-teaching-hospital-of-tehran
#15
Mandana Zafari, Mohamad Mehdi Feizabadi, Sirous Jafari, Alireza Abdollahi, Azar Sabokbar
Nosocomial infection caused by carbapenem-resistant Acinetobacter baumannii (CRAB) has created a public health concern all around the world. In this study, 100 isolates of CRAB from hospitalized patients during 2015-2016 at Imam Khomeini Hospital were investigated to determine the rates of multidrug-resistant (MDR) and extensively drug-resistant (XDR) strains using Kirby-Bauer disk diffusion method. The minimum inhibitory concentrations (MICs) of six antibiotics were determined by broth microdilution method...
September 5, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28870090/efficiency-of-temporary-storage-of-geothermal-waters-in-a-lake-system-monitoring-the-changes-of-water-quality-and-bacterial-community-structures
#16
Barbara Szirányi, Gergely Krett, Tünde Kosáros, Endre Janurik, Ferenc Pekár, Károly Márialigeti, Andrea K Borsodi
Disposal of used geothermal waters in Hungary often means temporary storage in reservoir lakes to reduce temperature and improve water quality. In this study, the physical and chemical properties and changes in the bacterial community structure of a reservoir lake system in southeast region of Hungary were monitored and compared through 2 years, respectively. The values of biological oxygen demand, concentrations of ammonium ion, total inorganic nitrogen, total phosphorous, and total phenol decreased, whereas oxygen saturation, total organic nitrogen, pH, and conductivity increased during the storage period...
September 5, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28889757/resurgence-of-yellow-fever-in-brazil-overview-and-possible-control-options
#17
Abdul Waheed Khan, Zeeshan Nasim, Fazli Zahir, Muhammad Adil Khan, Abid Ali, Shahid Ali, Abdul Haleem Khan
No abstract text is available yet for this article.
September 1, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28889756/occurrence-of-vancomycin-resistant-staphylococcus-aureus-in-the-oral-cavity-of-patients-with-dental-caries
#18
Sajith Vellappally, Darshan Devang Divakar, Abdulaziz Abdullah Al Kheraif, Ravikumar Ramakrishnaiah, Amer Alqahtani, M H N Dalati, Sukumaran Anil, Aftab Ahmed Khan, P R Harikrishna Varma
Oral streptococci are the major group of microbes isolated from oral microflora. They represent frequent pathogens of infective endocarditis (IE), and it is assumed that in most of the cases oral streptococci are acquired via mucosa layer of oral cavity. Staphylococcus aureus is also frequently isolated from IE as it accounts for 20%-30% of all cases. Vancomycin has been the most reliable therapeutic agent against infections caused by methicillin-resistant S. aureus (MRSA). The main objective of this study was to examine the occurrence of S...
September 1, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28859501/is-there-a-hormonal-regulation-of-phagocytosis-at-unicellular-and-multicellular-levels-a-critical-review
#19
György Csaba
Phagocytosis is an ancient cell function, which is similar at unicellular and multicellular levels. Unicells synthesize, store, and secrete multicellular (mammalian) hormones, which influence their phagocytosis. Amino acid hormones, such as histamine, serotonin, epinephrine, and melatonin stimulate phagocytosis, whereas peptide hormones, such as adrenocorticotropic hormone (ACTH), insulin, opioids, arginine vasopressin, and atrial natriuretic peptide decreased it, independently on their chemical structure or function in multicellulars...
September 1, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28859500/emergence-of-ndm-1-among-carbapenem-resistant-klebsiella-pneumoniae-in-iraqi-hospitals
#20
Nadheema Hammood Hussein
Carbapenems are the last drugs of choice apart from colistin against serious infections caused by Gram-negative bacteria. However, there are increasing number of reports indicating prevailing emergence of metallo-β-lactamase (MBL)-producing clinical isolates worldwide and among them New Delhi MBL (NDM) is the most prevalent one. This study reports NDM-1 for the first time among Klebsiella pneumoniae from hospitalized patients in Baghdad, Iraq. Fifty-five clinical isolates of K. pneumoniae resistant to carbapenem were investigated from burned wounds, sputum, and blood samples...
September 1, 2017: Acta Microbiologica et Immunologica Hungarica
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