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Harbaoui S, Ferjani S, Abbassi MS, Guzmán-Puche J, Causse M, Elías-López C, Martínez-Martínez L, Boubaker IBB. Genetic background of aminoglycoside-modifying enzymes in various genetic lineages of clinical aminoglycosides-resistant E. coli and K. pneumoniae isolates in Tunisia. J Appl Microbiol 2024; 135:lxae164. [PMID: 38955378 DOI: 10.1093/jambio/lxae164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Revised: 06/10/2024] [Accepted: 07/01/2024] [Indexed: 07/04/2024]
Abstract
AIMS This study was conducted to evaluate the in vitro activity of clinically relevant aminoglycosides and to determine the prevalence of genes encoding aminoglycoside modifying enzymes (AMEs) and 16S ribosomal RNA (rRNA) methyltransferases among aminoglycoside-resistant E. coli (n = 61) and K. pneumoniae (n = 44) clinical isolates. Associated resistances to beta-lactams and their bla genes as well as the genetic relatedness of isolates were also investigated. MATERIALS AND METHODS A total of 105 aminoglycoside-resistant E. coli (n = 61) and K. pneumoniae (n = 44) isolates recovered between March and May 2017 from 100 patients hospitalized in different wards of Charles Nicolle Hospital of Tunis, Tunisia, were studied. Minimal inhibitory concentrations of aminoglycoside compounds were determined by broth microdilution method. Aminoglycosides resistance encoding genes [aph(3´)-Ia, aph(3') IIa, aph(3´)-VIa, ant(2″)-Ia, aac(3)-IIa, aac(3)-IVa, aac(6')-Ib, rmtA, rmtB, rmtC, armA, and npmA] and bla genes were investigated by PCR and sequencing. Genetic relatedness was examined by multilocus sequence typing (MLST) for representative isolates. RESULTS High rates of aminoglycoside resistance were found: gentamicin (85.7%), tobramycin (87.6%), kanamycin (78.0%), netilmincin (74.3%), and amikcin (18.0%). Most common AME gene was aac(3)-IIa (42%), followed by aac(6')-Ib (36.2%) and aph(3')-VIa (32.4%). The majority of isolates were resistant to beta-lactams and blaCTX-M-15 was the most common ESBL. The blaNDM-1 and blaOXA-48 were also produced by 1 and 23 isolates, respectively. Novel sequence types have been reported among our isolates and high-risk clonal lineages have been detected, such as E. coli ST43 (ST131 in Achtman MLST scheme) and K. pneumoniae (ST11/ST13). CONCLUSIONS The high prevalence of aminoglycoside resistance rates and the diversity of corresponding genes, with diverse β-lactamase enzymes among genetically heterogeneous clinical isolates present a matter of concern.
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Affiliation(s)
- Sarra Harbaoui
- Research Laboratory «Antimicrobial resistance» LR99ES09, Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis 1006, Tunisia
| | - Sana Ferjani
- Research Laboratory «Antimicrobial resistance» LR99ES09, Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis 1006, Tunisia
- Laboratory of Microbiology, Charles Nicolle Hospital, Boulevard 9 Avril, Tunis 1006, Tunisia
| | - Mohamed Salah Abbassi
- Research Laboratory «Antimicrobial resistance» LR99ES09, Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis 1006, Tunisia
- Laboratory of Bacteriological Research, Institute of Veterinary Research of Tunisia, University of Tunis El Manar, Tunis 1006, Tunisia
| | - Julia Guzmán-Puche
- Unidad de Gestión Clínica de Microbiologia, Hospital Universitario Reina Sofía de Córdoba, Córdoba 14004, Spain
| | - Manuel Causse
- Unidad de Gestión Clínica de Microbiologia, Hospital Universitario Reina Sofía de Córdoba, Córdoba 14004, Spain
| | - Cristina Elías-López
- Instituto Maimónides de Investigación Biomédica de Córdoba, Córdoba 14004, Spain
| | - Luis Martínez-Martínez
- Departamento de Química Agrícola, Edafología y Microbiología, Universidad de Córdoba, Córdoba 14004, Spain
| | - Ilhem Boutiba-Ben Boubaker
- Research Laboratory «Antimicrobial resistance» LR99ES09, Faculty of Medicine of Tunis, University of Tunis El Manar, Tunis 1006, Tunisia
- Laboratory of Microbiology, Charles Nicolle Hospital, Boulevard 9 Avril, Tunis 1006, Tunisia
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Wangkheimayum J, Phonglo P, Singha KM, Chanda DD, Bhattacharjee A. Escherichia coli harbouring strAB with reduced susceptibility towards gentamicin and amikacin: a single centre study from India. Access Microbiol 2022; 4:acmi000446. [PMID: 36415738 PMCID: PMC9675172 DOI: 10.1099/acmi.0.000446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023] Open
Abstract
In this study we report the presence of streptomycin resistance gene strAB within clinical isolates of Escherichia coli where streptomycin is not used to treat Gram-negative infections. In total, 135 E. coli isolates were obtained for the study. PCR based detection of strAB was performed in the study isolates followed by assessment of horizontal transferability. Cloning of strAB was done in laboratory strain E. coli DH5α. Pre-cloning and post-cloning susceptibility of the strain was done for assessment of acquired resistance. Among tested isolates, 89 were found to harbour strAB and it was encoded within a IncI1 type plasmid. Cloning experiments revealed the strAB gene showed unusual non-susceptibility towards amikacin and gentamicin. The study highlighted that strAB, which has a role in streptomycin resistance, may also have a role in reduced susceptibility towards gentamicin and amikacin within a clinical setting.
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Affiliation(s)
| | - Prynali Phonglo
- Department of Microbiology, Assam University, Silchar, India
| | - K. Melson Singha
- Department of Microbiology, Silchar Medical College and Hospital, Silchar, India
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Alneama RT, Al-Massody AJ, Mahmud BM, Ghasemian A. The existence and expression of aminoglycoside resistance genes among multidrug-resistant Escherichia coli isolates in intensive care unit centers. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Loncaric I, Misic D, Szostak MP, Künzel F, Schäfer-Somi S, Spergser J. Broad-Spectrum Cephalosporin-Resistant and/or Fluoroquinolone-Resistant Enterobacterales Associated with Canine and Feline Urogenital Infections. Antibiotics (Basel) 2020; 9:E387. [PMID: 32645942 PMCID: PMC7399855 DOI: 10.3390/antibiotics9070387] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/24/2020] [Accepted: 07/03/2020] [Indexed: 12/31/2022] Open
Abstract
The aim of the present study was to characterize Enterobacterales resistant to 3rd and 4th generation cephalosporins, carbapenems and/or fluoroquinolones, isolated from dogs and cats with urogenital infections. In total, 36 strains (Escherichia coli (n = 28), Klebsiella pneumoniae (n = 3), Serratia marcescens, Raoultella ornithinolytica, Proteus mirabilis, Citrobacter portucalensis and Enterobacter cloacae (each n = 1)) were included in the present study, 28 from Austria and 8 from Serbia. Isolates were characterized by a polyphasic approach including susceptibility pheno- and genotyping and microarray-based assays. Escherichia (E.) coli isolates were additionally characterized by two-locus (fumC and fimH) sequence phylotyping and multi-locus sequence typing (MLST) of selected isolates. MLST of carbapenem-resistant Enterobacter cloacae isolates was also performed. Among E. coli, the most dominant phylogenetic group was B1 (27.8%), followed by C, (16.6%), A and Clade II (5.5% each), B2 and F (2.77% each). The most predominant β-lactam resistance genes were blaTEM (70%) and blaCTX-M (38.8%), blaCMY (25%). blaNDM was detected in one carbapenem-resistant Enterobacter cloacae ST114. The most common ST among selected E. coli was 744 (10.7% isolates). The pandemic clones ST131 and ST648 carrying CTX-M-15 were also detected. Remaining STs belonged to 469, 1287, 1463 and 1642. E. coli clonotyping revealed 20 CH types. Based on the presence of certain virulence genes, three isolates were categorized as ExPEC/UPEC. The most prevalent virulence factors were fimH detected in 61%, iucD and iss both in 55%, iroN in 27.8%, papC in 13.8% and sat in 8.3% isolates.
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Affiliation(s)
- Igor Loncaric
- Institute of Microbiology, University of Veterinary Medicine, 1210 Vienna, Austria; (M.P.S.); (J.S.)
| | - Dusan Misic
- Faculty of Biotechnology and Food Science, Wroclaw University of Environmental and Life Sciences, 51-630 Wrocław, Poland;
- Faculty of Veterinary Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Michael P. Szostak
- Institute of Microbiology, University of Veterinary Medicine, 1210 Vienna, Austria; (M.P.S.); (J.S.)
| | - Frank Künzel
- Clinic for Small Animals, Internal Medicine Unit, University of Veterinary Medicine, 1210 Vienna, Austria;
| | - Sabine Schäfer-Somi
- Department for Small Animals and Horses, Platform for AI and ET, University of Veterinary Medicine, 1210 Vienna, Austria;
| | - Joachim Spergser
- Institute of Microbiology, University of Veterinary Medicine, 1210 Vienna, Austria; (M.P.S.); (J.S.)
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Wangkheimayum J, Majumder TD, Tapadar YB, Das BJ, Paul D, Dhar D, Chakravarty A, Bhattacharjee A. Occurrence of diverse aminoglycoside modifying enzymes with co-existing extended-spectrum-β-lactamases within Enterobacteriaceae isolated in India. J Glob Antimicrob Resist 2019; 21:369-374. [PMID: 31726238 DOI: 10.1016/j.jgar.2019.11.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 11/04/2019] [Accepted: 11/04/2019] [Indexed: 11/17/2022] Open
Abstract
OBJECTIVE The present study describes aminoglycoside modifying enzymes (AMEs) among clinical isolates with coexisting extended spectrum beta-lactamases. METHODOLOGY A total of 227 non duplicate enterobacterial isolates were collected and identified from patients who were admitted to different wards or attended OPD of a tertiary referral hospital of North-East India. Isolates were initially screened for antimicrobial susceptibility testing followed by PCR based screening of aminoglycosides modifying enzymes and co-existing ESBLs and carbapenemases. Horizontal transferability, incompatibility typing and stability of plasmids were also analyzed. RESULTS Diverse types of AMEs were observed namely; ant(3″)-I, ant(4')-Ia, aac(3)-IIc, ant(3')-I, aac(6')-Ib, ant(2″)-Ia and aac(6'). Majority of the AME positive isolates harboured blaTEM followed by blaCTX-M-15 and a combination of blaTEM and blaCTX-M-15 were also observed. Nine isolates were found to harbour carbapenemases genes. AME genes were found to be located within a self conjugative plasmid of Inc FIA, IncY, IncN, IncFIB and IncA/C incompatibility types. It was observed that most AME genes were stable over 50 days of serial passages whereas aph(3')-Via and aph(3')-IIb were completely lost within 50 days. CONCLUSION This study underscores the co-existence of AMEs and ESBLs within enterobacteriaceae which emphasize a reassessment of combination therapy in the health settings.
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Affiliation(s)
| | | | | | | | - Deepjyoti Paul
- Department of Microbiology, Assam University, Silchar, India
| | - Debadatta Dhar
- Department of Microbiology, Silchar Medical College and Hospital, Silchar, India
| | - Atanu Chakravarty
- Department of Microbiology, Silchar Medical College and Hospital, Silchar, India
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Son SH, Seo KW, Kim YB, Jeon HY, Noh EB, Lee YJ. Molecular Characterization of Multidrug-Resistant Escherichia coli Isolates from Edible Offal in Korea. J Food Prot 2019; 82:1183-1190. [PMID: 31233359 DOI: 10.4315/0362-028x.jfp-18-458] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
HIGHLIGHTS Edible offal is significantly contaminated by antimicrobial-resistant Escherichia coli. E. coli from edible offal is harboring various antimicrobial resistance and virulence genes. Improvements in hygienic conditions of edible offal production is required.
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Affiliation(s)
- Se Hyun Son
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Kwang Won Seo
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Yeong Bin Kim
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Hye Young Jeon
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Eun Bi Noh
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
| | - Young Ju Lee
- College of Veterinary Medicine & Zoonoses Research Institute, Kyungpook National University, Daegu 41566, Republic of Korea (ORCID: https://orcid.org/0000-0002-4754-0931 [Y.B.K.]; https://orcid.org/0000-0003-1903-1133 [H.Y.J.])
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Wangkheimayum J, Bhattacharjee M, Das BJ, Singha KM, Chanda DD, Chanda DD, Bhowmik D, Bhattacharjee A. Diverse aminoglycoside phosphotransferase types conferring aminoglycoside resistance in Enterobacteriaceae: A single-centre study from Northeast India. Indian J Med Microbiol 2019; 37:418-422. [PMID: 32003343 DOI: 10.4103/ijmm.ijmm_19_262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The present study investigates the molecular basis of aph-mediated aminoglycoside resistance and their transmission dynamics in a tertiary care hospital of Northeast India. Two hundred forty one isolates (230 Escherichia coli and 11 Klebsiella pneumoniae) were collected and screened for aminoglycoside resistance genes. Various aph types were amplified using polymerase chain reaction (PCR) assay. Plasmid incompatibilty, horizontal transferability and ERIC-PCR based typing were carried out for all the positive isolates. Among them, 67 isolates showed the presence of aph gene. Aph (3")-IIIa and aph (3')-Via were predominant and horizontally transferable. All the plasmids were of incompatibility I1 group. Twenty-eight different haplotypes of E. coli were found harbouring aph gene types. This study was able to identify diverse aph types in a single centre and their corresponding phenotypic trait.
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Affiliation(s)
| | | | | | - K Melson Singha
- Department of Microbiology, Assam University, Silchar, Assam, India
| | | | - Debadatta Dhar Chanda
- Department of Microbiology, Silchar Medical College and Hospital, Silchar, Assam, India
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Wang Y, Zhang Q, Jin Y, Jin X, Yu J, Wang K. Epidemiology and antimicrobial susceptibility profiles of extended-spectrum beta-lactamase-producing Klebsiella pneumoniae and Escherichiacoli in China. Braz J Microbiol 2019; 50:669-675. [PMID: 30972583 PMCID: PMC6863272 DOI: 10.1007/s42770-019-00081-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 02/27/2019] [Indexed: 10/27/2022] Open
Abstract
OBJECTS The retrospective study aimed to determine the prevalence rate and antimicrobial susceptibility of extended-spectrum beta-lactamases (ESBLs)-producing Klebsiella pneumoniae and Escherichia coli in 2013-2017 at a single center in China. METHODS Klebsiella pneumoniae and Escherichia coli data were collected from the microbiological laboratory. VITEK 2 compact system was used for the identification and antimicrobial susceptibility testing. ESBL status was determined as per the Clinical and Laboratory Standards Institute (CLSI) protocols microdilution method. RESULTS Among a total of 2774 strains of Klebsiella pneumoniae and 2154 strains of Escherichia coli, 15.79% and 36.86% were found to be ESBL producers, respectively. In all patients infected by ESBLs-producing strains, those over 60 years accounted for the largest proportion. Infection by ESBLs-producing Klebsiella pneumoniae was more common in male, while that by ESBLs-producing Escherichia coli was more common in female. Urine and respiratory secretions were the most common sources of ESBLs-producing strains; however, ESBLs-producing strains from urine had been significantly declined. No carbapenem-resistant isolate was found, and all ESBLs-producing strains were resistant to ceftriaxone, aztreonam, and piperacillin. There were no differences in resistance rates between ESBLs-producing Escherichia coli and Klebsiella pneumoniae to ceftazidime and cefepime; however, ESBLs-producing Klebsiella pneumoniae showed higher resistance rates to piperacillin/tazobactam, amikacin, gentamicin, and co-trimoxazole compared with ESBLs-producing Escherichia coli. CONCLUSION Different ESBLs-producing organisms have their own epidemiological characteristics, and the resistance of ESBLs-producing Klebsiella pneumoniae and Escherichia coli is different even to the same antibiotics. Therefore, it is important to continuously monitor the status of ESBLs-producing organisms, and an improved antimicrobial stewardship and infection control are much required.
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Affiliation(s)
- Yan Wang
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Qinghua Zhang
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Yufen Jin
- Department of Clinical Laboratory, The Second Hospital of Jilin University, Changchun, China
| | - Xin Jin
- Department of Hematology, The Second Hospital of Jilin University, Changchun, China
| | - Jinyan Yu
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Ke Wang
- Department of Respiratory Medicine, The Second Hospital of Jilin University, Changchun, Jilin Province, China.
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Tohamy ST, Aboshanab KM, El-Mahallawy HA, El-Ansary MR, Afifi SS. Prevalence of multidrug-resistant Gram-negative pathogens isolated from febrile neutropenic cancer patients with bloodstream infections in Egypt and new synergistic antibiotic combinations. Infect Drug Resist 2018; 11:791-803. [PMID: 29872329 PMCID: PMC5975596 DOI: 10.2147/idr.s163293] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
INTRODUCTION Bloodstream infections with multidrug-resistant (MDR) Gram-negative bacteria (GNB) are among the most frequent complications in immunocompromised cancer patients because of their considerable morbidity and mortality. Several guidelines on antimicrobial therapy have addressed empirical treatment for such serious infections; however, the emergence of microbial resistance has become a significant problem worldwide. MATERIALS AND METHODS In this study, starting from November 2015 to October 2016, a total of 529 blood specimens were collected from febrile neutropenic cancer patients at a tertiary care cancer hospital in Egypt. RESULTS On examination for positive bacterial growth, it was found that 334 specimens showed no growth, while 195 were positive. Out of the 195 positive culture specimens, 102 (102/195, 52.3%) were Gram-negative and 93 (93/195, 47.7%) were Gram-positive. Out of the 102 GNB, 70 (70/102, 68.6%) were MDR, including Escherichia coli (27/70, 38.6%), Klebsiella pneumoniae (24/70, 34.3%), Acinetobacter baumannii (9/70, 12.8%), Enterobacter cloacae (4/70, 5.7%), Pseudomonas aeruginosa (2/70, 2.8%), Klebsiella oxytoca (2/70, 2.8%), and Klebsiella ornithinolytica (2/70, 2.8%). All MDR GNB showed high resistance to ampicillin, cefepime, ceftriaxone, and cephradine (minimum inhibitory concentration at which 50% of the isolates were inhibited [MIC50] >512 μg/mL for each). However, they showed good susceptibility to colistin (MIC50 <1 μg/mL). The most common extended-spectrum β-lactamases (ESBLs) genes detected were ctx-m (39/70, 55.7%), shv (31/70, 44.3%), and tem (22/70, 31.4%). The most common aminoglycoside-resistant gene detected was aac(6')-Ib (42/70, 60%) followed by the plasmid-mediated quinolone resistance determinants; qnrA (2/70, 2.8%), qnrB (9/70, 12.8%), and qnrS (19/70, 27.1%). ESBL determinants were significantly associated with resistance to ciprofloxacin, levofloxacin, amikacin, and carbapenems (P-value <0.005). The fractional inhibitory concentration index for ampicillin/sulbactam plus ceftriaxone, ampicillin/sulbactam plus amikacin, and amikacin plus levofloxacin showed synergism against 29 (29/70, 41.4%), 19 (19/70, 27.1%), and 11 (11/70, 15.7%) isolates of the tested MDR GNB isolates, respectively. CONCLUSION Accordingly, new empirical antibiotics should be administered including the use of colistin or meropenem alone or both against the MDR GNB in neutropenic cancer patients.
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Affiliation(s)
- Sally Tohamy Tohamy
- Department of Microbiology and Immunology, Faculty of Pharmacy For Girls, Al-Azhar University, Cairo, Egypt
| | - Khaled Mohamed Aboshanab
- Department of Microbiology and Immunology, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
| | | | - Mona R El-Ansary
- Department of Biochemistry, Modern University for Technology and Information, Cairo, Egypt
| | - Salwa Selim Afifi
- Department of Microbiology and Immunology, Faculty of Pharmacy For Girls, Al-Azhar University, Cairo, Egypt
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Xu Z, Xu X, Qi D, Yang L, Li B, Li L, Li X, Chen D. Effect of aminoglycosides on the pathogenic characteristics of microbiology. Microb Pathog 2017; 113:357-364. [PMID: 28867624 DOI: 10.1016/j.micpath.2017.08.053] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2017] [Revised: 08/30/2017] [Accepted: 08/30/2017] [Indexed: 02/08/2023]
Abstract
Infections caused by pathogen remain to be one of the most important global health issues, and scientists are devoting themselves to seeking effective treatments. Aminoglycoside antibiotics are one kind of widely used antibiotics because of the good efficiency and broad antimicrobial-spectrum. However, it causes some unexpected effects on the pathogenic characteristics of microbiology during the treatment, such as drug resistance and biofilm promotion. Drug resistance is partly due to antibiotics abuse. Simultaneously, aminoglycoside is documented to make divergent effects on biofilm based on their concentrations. Here, we review the mechanism of drug resistance caused by long-term use of aminoglycoside antibiotics, the effects of antibiotic concentration on biofilm formation and the negative effects on intestinal flora to provide theoretical supports for rational use of antibiotics.
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Affiliation(s)
- Zhenbo Xu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, PR China; Department of Microbial Pathogenesis, School of Dentistry, University of Maryland, Baltimore, MD 21201, USA.
| | - Xingyong Xu
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China
| | - Da Qi
- BGI-Shenzhen, Shenzhen 518083, PR China
| | - Ling Yang
- Department of Laboratory Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510120, PR China
| | - Bing Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, PR China
| | - Lin Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, PR China
| | - Xiaoxi Li
- School of Food Science and Engineering, South China University of Technology, Guangzhou 510640, PR China; Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, PR China.
| | - Dingqiang Chen
- Department of Laboratory Medicine, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510120, PR China
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