- Alterations of gyrA, gyrB, and parC and Activity of Efflux Pump in Fluoroquinolone-resistant Acinetobacter baumannii
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Sunok Park, Kyeong Min Lee, Yong Sun Yoo, Jung Sik Yoo, Jae Il Yoo, Hwa Su Kim, Yeong Seon Lee, Gyung Tae Chung
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Osong Public Health Res Perspect. 2011;2(3):164-170. Published online December 31, 2011
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DOI: https://doi.org/10.1016/j.phrp.2011.11.040
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 Abstract
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- Objectives
This study investigated the fluoroquinolone-resistant mechanism of 56 clinical cases of A baumannii infection from 23 non-tertiary hospitals, collected between 2004 and 2006.
Methods
Susceptibility testing was performed by broth microdilution and Epsilometer test. Analyses of quinolone resistance-determining region (QRDR) were done by sequencing. The activity of the efflux pump was measured using inhibitors.
Results
The sequences from selected 56 isolates were divided into seven groups (I-VII) on the basis of mutations in gyrA (S83L), parC (S80L, S80W and S84K) and gyrB (containing the novel mutations E679D, D644Y and A677V). The 27 isolates with triple mutations in gyrA, gyrB and parC (groups IV-VII) showed higher levels of resistance to ciprofloxacin (minimal inhibitory concentration [MIC] of 16-256 μg/mL) than the 26 isolates with double mutations in gyrA and parC (groups II and III, MIC of 8-64 μ g/mL; p < 0.05). Alterations in the efflux pump were observed in four isolates with the parC S80L mutation (group II) or E84K mutation (group VII), but no effect was observed in an isolate with the parC S80 W mutation (group III).
Conclusion
These results suggest that triple mutations in clinical isolates of A baumannii contribute to the development of high levels of resistance to fluoroquinolones and that mutations in parC S80L or E84K (groups II and VII) may contribute to alterations in efflux pump activity in A baumannii.
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Citations
Citations to this article as recorded by  - Development of Nanoparticle Adaptation Phenomena in Acinetobacter baumannii: Physiological Change and Defense Response
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Deepak Kumar, Chaitali Singhal, Manisha Yadav, Pooja Joshi, Priyanka Patra, Subhash Tanwar, Amitava Das, Sumit Kumar Pramanik, Susmita Chaudhuri
Frontiers in Microbiology.2023;[Epub] CrossRef - Phenotypic and Molecular Characteristics of Carbapenem-Resistant Acinetobacter baumannii Isolates from Bulgarian Intensive Care Unit Patients
Tanya V. Strateva, Ivo Sirakov, Temenuga J. Stoeva, Alexander Stratev, Slavil Peykov
Microorganisms.2023; 11(4): 875. CrossRef - Effect of Phenylalanine–Arginine Beta-Naphthylamide on the Values of Minimum Inhibitory Concentration of Quinolones and Aminoglycosides in Clinical Isolates of Acinetobacter baumannii
Stefany Plasencia-Rebata, Saul Levy-Blitchtein, Juana del Valle-Mendoza, Wilmer Silva-Caso, Isaac Peña-Tuesta, William Vicente Taboada, Fernando Barreda Bolaños, Miguel Angel Aguilar-Luis
Antibiotics.2023; 12(6): 1071. CrossRef - How to treat severe Acinetobacter baumannii infections
Emilio Bouza, Patricia Muñoz, Almudena Burillo
Current Opinion in Infectious Diseases.2023; 36(6): 596. CrossRef - Comparative genotypic characterization related to antibiotic resistance phenotypes of clinical carbapenem-resistant Acinetobacter baumannii MTC1106 (ST2) and MTC0619 (ST25)
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Bioorganic Chemistry.2022; 124: 105849. CrossRef - Differential Binding of Carbapenems with the AdeABC Efflux Pump and Modulation of the Expression of AdeB Linked to Novel Mutations within Two-Component System AdeRS in Carbapenem-Resistant Acinetobacter baumannii
Subhasree Roy, Vivek Junghare, Shanta Dutta, Saugata Hazra, Sulagna Basu, Christopher W. Marshall
mSystems.2022;[Epub] CrossRef - Antimicrobial Resistance, Integron Carriage, and Fluoroquinolone Resistance Genes in Acinetobacte baumannii Isolates
Parastoo Ashouri, Jafar Mohammadshahi, Vajihe Sadat Nikbin, Hadi Peeridogaheh, Behnam Mohammadi-Ghalehbin, Soheila Refahi, Amir Teimourpour, Majid Esmaelizad, Hafez Mirzaneghad, Roghayeh Teimourpour
Archives of Clinical Infectious Diseases.2022;[Epub] CrossRef - Efflux pumps in multidrug-resistant Acinetobacter baumannii: Current status and challenges in the discovery of efflux pumps inhibitors
Privita Verma, Monalisa Tiwari, Vishvanath Tiwari
Microbial Pathogenesis.2021; 152: 104766. CrossRef - Overexpression of Efflux Pumps, Mutations in the Pumps’ Regulators, Chromosomal Mutations, and AAC(6′)-Ib-cr Are Associated With Fluoroquinolone Resistance in Diverse Sequence Types of Neonatal Septicaemic Acinetobacter baumannii: A 7-Year Single Center S
Subhasree Roy, Somdatta Chatterjee, Amrita Bhattacharjee, Pinaki Chattopadhyay, Bijan Saha, Shanta Dutta, Sulagna Basu
Frontiers in Microbiology.2021;[Epub] CrossRef - Shared and Unique Evolutionary Trajectories to Ciprofloxacin Resistance in Gram-Negative Bacterial Pathogens
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Noel-David Nogbou, Granny M. Nkawane, Khanyisa Ntshane, Charles K. Wairuri, Dikwata T. Phofa, Kagiso K. Mokgokong, Mbudzeni Ramashia, Maphoshane Nchabeleng, Lawrence C. Obi, Andrew M. Musyoki, Todd R. Callaway
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PLOS ONE.2021; 16(12): e0259915. CrossRef - Effects of different resistance mechanisms on antimicrobial resistance in Acinetobacter baumannii: a strategic system for screening and activity testing of new antibiotics
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Journal of Antimicrobial Chemotherapy.2019; 74(6): 1484. CrossRef - Phenotypic and Genotypic Characterization of Acinetobacter spp. Panel Strains: A Cornerstone to Facilitate Antimicrobial Development
Roshan D'Souza, Naina A. Pinto, Nguyen Le Phuong, Paul G. Higgins, Thao Nguyen Vu, Jung-Hyun Byun, Young Lag Cho, Jong Rak Choi, Dongeun Yong
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Maysaa El Sayed Zaki, Nermen Abou ElKheir, Mohamed Mofreh
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Samira M. Hamed, Walid F. Elkhatib, Hadir A. El-Mahallawy, Mai M. Helmy, Mohamed S. Ashour, Khaled M. A. Aboshanab
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S. Yilmaz, I. Yalcin, S. Okten, F. K. Onurdag, E. Aki-Yalcin
SAR and QSAR in Environmental Research.2017; 28(11): 941. CrossRef - Antibacterial Resistance in Ureaplasma Species and Mycoplasma hominis Isolates from Urine Cultures in College-Aged Females
Marissa A. Valentine-King, Mary B. Brown
Antimicrobial Agents and Chemotherapy.2017;[Epub] CrossRef - MOLECULAR BACKGROUND OF FLUOROQUINOLONE RESISTANCE IN PATHOGENIC HUMAN MYCOPLASMAS
A. N. Vaganova
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Wesley Field, Ruth Hershberg
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Masayoshi Tojo, Momoko Mawatari, Kayoko Hayakawa, Maki Nagamatsu, Kayo Shimada, Kazuhisa Mezaki, Yuko Sugiki, Emi Kuroda, Nozomi Takeshita, Satoshi Kutsuna, Yoshihiro Fujiya, Tohru Miyoshi-Akiyama, Teruo Kirikae, Norio Ohmagari
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Abdollah Ardebili, Abdolaziz Rastegar Lari, Malihe Talebi
Annals of Laboratory Medicine.2014; 34(6): 433. CrossRef - Effect of Efflux Pump Inhibitor Carbonyl Cyanide 3-Chlorophenylhydrazone on the Minimum Inhibitory Concentration of Ciprofloxacin in Acinetobacter baumannii Clinical Isolates
Abdollah Ardebili, Malihe Talebi, Leila Azimi, Abdolaziz Rastegar Lari
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Sofiane Bakour, Samer Ahmed Alsharapy, Abdelaziz Touati, Jean-Marc Rolain
Microbial Drug Resistance.2014; 20(6): 604. CrossRef - First report of 16S rRNA methylase ArmA-producing Acinetobacter baumannii and rapid spread of metallo-β-lactamase NDM-1 in Algerian hospitals
Sofiane Bakour, Abdelaziz Touati, Taous Bachiri, Farida Sahli, Djamel Tiouit, Malek Naim, Mounia Azouaou, Jean-Marc Rolain
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- Gene Expression and Identification Related to Fluconazole Resistance of Candida glabrata Strains
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Jae Il Yoo, Chi Won Choi, Kyeong Min Lee, Yeong Seon Lee
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Osong Public Health Res Perspect. 2010;1(1):36-41. Published online December 31, 2010
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DOI: https://doi.org/10.1016/j.phrp.2010.12.009
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2,528
View
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15
Download
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9
Citations
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Abstract
PDF
- Objectives
Candida glabrata has become one of the most common causes of Candida bloodstream infections worldwide. Some strains of C. glabrata may be intermediately resistant to all azoles. The several possible mechanisms of azole resistance have been reported previously, but the exact resistant mechanism is not clear. In this study, we identified differentially expressed genes (DEGs) of fluconazole-resistant C. glabrata and compared the gene expression of fluconazole-resistant strains with that of fluconazole-susceptible strains to identify gene corresponding to fluconazole resistance.
Methods
Using antifungal susceptibility test, several C. glabrata strains were selected and used for further study. The expression of CgCDR1 and CgCDR2 genes was investigated by slot hybridization against fluconazole-susceptible, -resistant, and resistant-induced strains. In addition, ERG3 and ERG11 genes were sequenced to analyze DNA base substitution. DEGs were identified by reverse transcription-polymerase chain reaction using DEG kit composed of 120 random primers.
Results
In slot hybridization, CgCDR1 gene was expressed more than CgCDR2 gene in resistant strains. Though base substitution of ERG11 and ERG3 genes was observed in several base sequences, just one amino acid change was identified in resistant strain. In the results of reverse transcription-polymerase chain reaction, 44 genes were upregulated and 34 genes were downregulated. Among them, adenosine triphosphate-binding cassette transporter-related genes, fatty acid desaturase, lyase, and hypothetical protein genes were upregulated and aldehyde dehydrogenase, oxidoreductase, and prohibitin-like protein genes were downregulated. Other DEGs were also identified.
Conclusion
This study showed that CgCDR1 gene was more closely related to fluconazole resistance of C. glabrata than CgCDR2 gene. In addition, several other genes related with fluconazole resistance of C. glabrata were identified.
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Citations
Citations to this article as recorded by - Molecular Mechanisms Associated with Antifungal Resistance in Pathogenic Candida Species
Karolina M. Czajka, Krishnan Venkataraman, Danielle Brabant-Kirwan, Stacey A. Santi, Chris Verschoor, Vasu D. Appanna, Ravi Singh, Deborah P. Saunders, Sujeenthar Tharmalingam
Cells.2023; 12(22): 2655. CrossRef - Candida glabrata: Pathogenicity and Resistance Mechanisms for Adaptation and Survival
Yahaya Hassan, Shu Yih Chew, Leslie Thian Lung Than
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Somanon Bhattacharya, Sutthichai Sae-Tia, Bettina C. Fries
Antibiotics.2020; 9(6): 312. CrossRef -
A Transcriptomics Approach To Unveiling the Mechanisms of
In Vitro
Evolution towards Fluconazole Resistance of a
Candida glabrata
Clinical Isolate
Mafalda Cavalheiro, Catarina Costa, Ana Silva-Dias, Isabel M. Miranda, Can Wang, Pedro Pais, Sandra N. Pinto, Dalila Mil-Homens, Michiyo Sato-Okamoto, Azusa Takahashi-Nakaguchi, Raquel M. Silva, Nuno P. Mira, Arsénio M. Fialho, Hiroji Chibana, Acácio G. R
Antimicrobial Agents and Chemotherapy.2019;[Epub] CrossRef - Clonal Spread of Candida glabrata Bloodstream Isolates and Fluconazole Resistance Affected by Prolonged Exposure: a 12-Year Single-Center Study in Belgium
Berdieke Goemaere, Katrien Lagrou, Isabel Spriet, Marijke Hendrickx, Pierre Becker
Antimicrobial Agents and Chemotherapy.2018;[Epub] CrossRef - Candida antifungal drug resistance in sub-Saharan African populations: A systematic review
Charlene Wilma Joyce Africa, Pedro Miguel dos Santos Abrantes
F1000Research.2017; 5: 2832. CrossRef - Expression Patterns of ABC Transporter Genes in Fluconazole-Resistant Candida glabrata
Atefeh Abdollahi Gohar, Hamid Badali, Tahereh Shokohi, Mojtaba Nabili, Nasrin Amirrajab, Maryam Moazeni
Mycopathologia.2017; 182(3-4): 273. CrossRef - Glabridin induces overexpression of two major apoptotic genes, MCA1 and NUC1 , in Candida albicans
Mojtaba Nabili, Maryam Moazeni, Mohammad Taghi Hedayati, Parisa Aryamlo, Atefeh Abdollahi Gohar, Seyed Mehdi Madani, Hamed Fathi
Journal of Global Antimicrobial Resistance.2017; 11: 52. CrossRef - Candida antifungal drug resistance in sub-Saharan African populations: A systematic review
Charlene Wilma Joyce Africa, Pedro Miguel dos Santos Abrantes
F1000Research.2016; 5: 2832. CrossRef
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