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  • 1 Institute of Medical Microbiology, Semmelweis University, Budapest, , Hungary
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Fluoroquinolone resistance in Enterobacteriales is developed by chromosomal and plasmid-mediated mechanisms. Plasmids play an important role in dissemination of resistant genes and they carry genes that protect bacteria in different stress-induced situations. In this study, we studied Escherichia coli strains, each carried one plasmid-mediated quinolone resistance determinant namely, qnrA1, qnrB1, qnrC1, and qnrD1. We exposed 0.5 McFarland density of each strain to 0.5 mg/L ciprofloxacin from the period of 30, 60, 90, and 120 min over 24 h. All treated strains were further exposed to a constantly increasing 1, 2, 4, and 8 mg/L ciprofloxacin solution through 24, 48, and 120 h. In given timepoints, RNA was extracted from all treated strains. Expression of qnrA1, qnrB1, qnrC1, and qnrD1 was investigated by quantitative PCR. Mutations in gyrA and parC genes were analyzed by PCR and nucleic acid sequencing. In this study, during 0.5 mg/L ciprofloxacin exposition, the following expression levels were detected: 1.2 for qnrA1, 1.47 for qnrD1, 12.44 for qnrC1, and 80.63 for qnrB1. In case of long-term study, we selected a resistant strain in qnrB1-positive E. coli, and its expression increased from 105.91 to 212.31. On the contrary, plasmid copy number increased in time from 1 to 4.13. No mutations in gyrA or in parC chromosomal genes of treated strains were detected. Our results show that qnrB1-positive E. coli strain was able to develop fluoroquinolone resistance by upregulated qnrB1 expression that was linked to a minor increase in plasmid copy number but no mutations occurred in gyrA or parC.

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Senior editors

Editor-in-Chief: Prof. Dóra Szabó (Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary)

Managing Editor: Dr. Béla Kocsis (Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary)

Co-editor: Dr. Andrea Horváth (Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary)

Editorial Board

  • Prof. Éva ÁDÁM (Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary)
  • Prof. Sebastian AMYES (Department of Medical Microbiology, University of Edinburgh, Edinburgh, UK.)
  • Dr. Katalin BURIÁN (Institute of Clinical Microbiology University of Szeged, Szeged, Hungary; Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary.)
  • Dr. Orsolya DOBAY (Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary)
  • Prof. Ildikó Rita DUNAY (Institute of Inflammation and Neurodegeneration, Medical Faculty, Otto-von-Guericke University, Magdeburg, Germany; Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany)
  • Prof. Levente EMŐDY(Department of Medical Microbiology and Immunology, University of Pécs, Pécs, Hungary.)
  • Prof. Anna ERDEI (Department of Immunology, Eötvös Loránd University, Budapest, Hungary, MTA-ELTE Immunology Research Group, Eötvös Loránd University, Budapest, Hungary.)
  • Prof. Éva Mária FENYŐ (Division of Medical Microbiology, University of Lund, Lund, Sweden)
  • Prof. László FODOR (Department of Microbiology and Infectious Diseases, University of Veterinary Medicine, Budapest, Hungary)
  • Prof. József KÓNYA (Department of Medical Microbiology, University of Debrecen, Debrecen, Hungary)
  • Prof. Yvette MÁNDI (Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary)
  • Prof. Károly MÁRIALIGETI (Department of Microbiology, Eötvös Loránd University, Budapest, Hungary)
  • Prof. János MINÁROVITS (Department of Oral Biology and Experimental Dental Research, University of Szeged, Szeged, Hungary)
  • Prof. Béla NAGY (Centre for Agricultural Research, Institute for Veterinary Medical Research, Budapest, Hungary.)
  • Prof. István NÁSZ (Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary)
  • Prof. Kristóf NÉKÁM (Hospital of the Hospitaller Brothers in Buda, Budapest, Hungary.)
  • Dr. Eszter OSTORHÁZI (Institute of Medical Microbiology, Semmelweis University, Budapest, Hungary)
  • Prof. Rozália PUSZTAI (Department of Medical Microbiology and Immunobiology, University of Szeged, Szeged, Hungary)
  • Prof. Peter L. RÁDY (Department of Dermatology, University of Texas, Houston, Texas, USA)
  • Prof. Éva RAJNAVÖLGYI (Department of Immunology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary)
  • Prof. Ferenc ROZGONYI (Institute of Laboratory Medicine, Semmelweis University, Budapest, Hungary)
  • Prof. Zsuzsanna SCHAFF (2nd Department of Pathology, Semmelweis University, Budapest, Hungary)
  • Prof. Joseph G. SINKOVICS (The Cancer Institute, St. Joseph’s Hospital, Tampa, Florida, USA)
  • Prof. Júlia SZEKERES (Department of Medical Biology, University of Pécs, Pécs, Hungary.)
  • Prof. Mária TAKÁCS (National Reference Laboratory for Viral Zoonoses, National Public Health Center, Budapest, Hungary.)
  • Prof. Edit URBÁN (Department of Medical Microbiology and Immunology University of Pécs, Pécs, Hungary; Institute of Translational Medicine, University of Pécs, Pécs, Hungary.)

 

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2020  
Total Cites 662
WoS
Journal
Impact Factor
2,048
Rank by Immunology 145/162(Q4)
Impact Factor Microbiology 118/137 (Q4)
Impact Factor 1,904
without
Journal Self Cites
5 Year 0,671
Impact Factor
Journal  0,38
Citation Indicator  
Rank by Journal  Immunology 146/174 (Q4)
Citation Indicator  Microbiology 120/142 (Q4)
Citable 42
Items
Total 40
Articles
Total 2
Reviews
Scimago 28
H-index
Scimago 0,439
Journal Rank
Scimago Immunology and Microbiology (miscellaneous) Q4
Quartile Score Medicine (miscellaneous) Q3
Scopus 438/167=2,6
Scite Score  
Scopus General Immunology and Microbiology 31/45 (Q3)
Scite Score Rank  
Scopus 0,760
SNIP
Days from  225
submission
to acceptance
Days from  118
acceptance
to publication
Acceptance 19%
Rate

2019  
Total Cites
WoS
485
Impact Factor 1,086
Impact Factor
without
Journal Self Cites
0,864
5 Year
Impact Factor
1,233
Immediacy
Index
0,286
Citable
Items
42
Total
Articles
40
Total
Reviews
2
Cited
Half-Life
5,8
Citing
Half-Life
7,7
Eigenfactor
Score
0,00059
Article Influence
Score
0,246
% Articles
in
Citable Items
95,24
Normalized
Eigenfactor
0,07317
Average
IF
Percentile
7,690
Scimago
H-index
27
Scimago
Journal Rank
0,352
Scopus
Scite Score
320/161=2
Scopus
Scite Score Rank
General Immunology and Microbiology 35/45 (Q4)
Scopus
SNIP
0,492
Acceptance
Rate
16%

 

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Acta Microbiologica et Immunologica Hungarica
Language English
Size A4
Year of
Foundation
1954
Publication
Programme
2021 Volume 68
Volumes
per Year
1
Issues
per Year
4
Founder Magyar Tudományos Akadémia
Founder's
Address
H-1051 Budapest, Hungary, Széchenyi István tér 9.
Publisher Akadémiai Kiadó
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1217-8950 (Print)
ISSN 1588-2640 (Online)

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