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Hatrongjit R, Boueroy P, Jenjaroenpun P, Wongsurawat T, Meekhanon N, Chopjitt P, Zheng H, Fittipaldi N, Chareonsudjai S, Segura M, Gottschalk M, Kerdsin A. Genomic characterization and virulence of Streptococcus suis serotype 4 clonal complex 94 recovered from human and swine samples. PLoS One 2023; 18:e0288840. [PMID: 37498866 PMCID: PMC10374156 DOI: 10.1371/journal.pone.0288840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 07/05/2023] [Indexed: 07/29/2023] Open
Abstract
Streptococcus suis is a zoonotic pathogen that causes invasive infections in humans and pigs. Herein, we performed genomic analysis of seven S. suis serotype 4 strains belonging to clonal complex (CC) 94 that were recovered from a human patient or from diseased and clinically healthy pigs. Genomic exploration and comparisons, as well as in vitro cytotoxicity tests, indicated that S. suis CC94 serotype 4 strains are potentially virulent. Genomic analysis revealed that all seven strains clustered within minimum core genome group 3 (MCG-3) and had a high number of virulence-associated genes similar to those of virulent serotype 2 strains. Cytotoxicity assays showed that both the human lung adenocarcinoma cell line and HeLa cells rapidly lost viability following incubation for 4 h with the strains at a concentration of 106 bacterial cells. The human serotype 4 strain (ID36054) decreased cell viability profoundly and similarly to the control serotype 2 strain P1/7. In addition, strain ST1689 (ID34572), isolated from a clinically healthy pig, presented similar behaviour in an adenocarcinoma cell line and HeLa cells. The antimicrobial resistance genes tet(O) and ermB that confer resistance to tetracyclines, macrolides, and lincosamides were commonly found in the strains. However, aminoglycoside and streptothricin resistance genes were found only in certain strains in this study. Our results indicate that S. suis CC94 serotype 4 strains are potentially pathogenic and virulent and should be monitored.
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Affiliation(s)
- Rujirat Hatrongjit
- Faculty of Science and Engineering, Department of General Sciences, Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon, Thailand
| | - Parichart Boueroy
- Faculty of Public Health, Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon, Thailand
| | - Piroon Jenjaroenpun
- Faculty of Medicine Siriraj Hospital, Department of Research and Development, Division of Bioinformatics and Data Management for Research, Mahidol University, Bangkok, Thailand
| | - Thidathip Wongsurawat
- Faculty of Medicine Siriraj Hospital, Department of Research and Development, Division of Bioinformatics and Data Management for Research, Mahidol University, Bangkok, Thailand
| | - Nattakan Meekhanon
- Faculty of Veterinary Technology, Kasetsart University, Bangkok, Thailand
| | - Peechanika Chopjitt
- Faculty of Public Health, Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon, Thailand
| | - Han Zheng
- National Institute for Communicable Disease Control and Prevention, State Key Laboratory of Infectious Disease Prevention and Control, Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases, Chinese Center for Disease Control and Prevention, Changping, Beijing, China
| | - Nahuel Fittipaldi
- Faculty of Veterinary Medicine, Research Group on Infectious Diseases in Production Animals (GREMIP), University of Montreal, Quebec, Canada
| | - Sorujsiri Chareonsudjai
- Faculty of Medicine, Department of Microbiology, Khon Kaen University, Khon Kaen, Thailand
- Research and Diagnostic Center for Emerging infectious Diseases (RCEID), Khon Kaen University, Khon Kaen, Thailand
| | - Mariela Segura
- Faculty of Veterinary Medicine, Research Group on Infectious Diseases in Production Animals (GREMIP), University of Montreal, Quebec, Canada
| | - Marcelo Gottschalk
- Faculty of Veterinary Medicine, Research Group on Infectious Diseases in Production Animals (GREMIP), University of Montreal, Quebec, Canada
| | - Anusak Kerdsin
- Faculty of Public Health, Kasetsart University Chalermphrakiat Sakon Nakhon Province Campus, Sakon Nakhon, Thailand
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Dong CL, Che RX, Wu T, Qu QW, Chen M, Zheng SD, Cai XH, Wang G, Li YH. New Characterization of Multi-Drug Resistance of Streptococcus suis and Biofilm Formation from Swine in Heilongjiang Province of China. Antibiotics (Basel) 2023; 12:antibiotics12010132. [PMID: 36671333 PMCID: PMC9854593 DOI: 10.3390/antibiotics12010132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/12/2023] Open
Abstract
The aim of this study was to investigate the antimicrobial resistance profiles and genotypes of Streptococcus suis in Heilongjiang Province, China. A total of 29 S. suis were isolated from 332 samples collected from 6 pig farms. The results showed that serotypes 2, 4 and 9 were prevalent, and all the clinical isolates were resistant to at least two antibacterial drugs. The most resisted drugs were macrolides, and the least resisted drugs were fluoroquinolones. Resistant genes ermB and aph (3')-IIIa were highly distributed among the isolates, with the detection rates of 79.31% and 75.86%. The formation of biofilm could be observed in all the isolated S. suis, among which D-1, LL-1 and LL-3 strains formed stronger biofilm structure than other strains. The results indicate that S. suis in Heilongjiang Province presents a multi-drug resistance to commonly used antimicrobial drugs, which was caused by the same target gene, the dissemination of drug resistance genes, and bacterial biofilm.
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Affiliation(s)
- Chun-Liu Dong
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150038, China
| | - Rui-Xiang Che
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing 163318, China
| | - Tong Wu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China
| | - Qian-Wei Qu
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China
| | - Mo Chen
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China
| | - Si-Di Zheng
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China
| | - Xue-Hui Cai
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150008, China
| | - Gang Wang
- State Key Laboratory of Veterinary Biotechnology, Harbin Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Harbin 150008, China
- Department of Basic Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian 271002, China
- Correspondence: (G.W.); (Y.-H.L.)
| | - Yan-Hua Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150038, China
- Heilongjiang Key Laboratory for Animal Disease Control and Pharmaceutical Development, Harbin 150038, China
- Correspondence: (G.W.); (Y.-H.L.)
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Chen L, Huang J, Huang X, He Y, Sun J, Dai X, Wang X, Shafiq M, Wang L. Horizontal Transfer of Different erm(B)-Carrying Mobile Elements Among Streptococcus suis Strains With Different Serotypes. Front Microbiol 2021; 12:628740. [PMID: 33841355 PMCID: PMC8032901 DOI: 10.3389/fmicb.2021.628740] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Accepted: 02/03/2021] [Indexed: 11/24/2022] Open
Abstract
Macrolide-resistant Streptococcus suis is highly prevalent worldwide. The acquisition of the erm(B) gene mediated by mobile genetic elements (MGEs) in particular integrative and conjugative elements (ICEs) is recognized as the main reason for the rapid spread of macrolide-resistant streptococcal strains. However, knowledge about different erm(B)-carrying elements responsible for the widespread of macrolide resistance and their transferability in S. suis remains poorly understood. In the present study, two erm(B)- and tet(O)-harboring putative ICEs, designated as ICESsuYSB17_rplL and ICESsuYSJ15_rplL, and a novel erm(B)- and aadE-spw-like-carrying genomic island (GI), named GISsuJHJ17_rpsI, were identified to be excised from the chromosome and transferred among S. suis strains with different serotypes. ICESsuYSB17_rplL and ICESsuYSJ15_rplL were integrated downstream the rplL gene, a conserve locus of the ICESa2603 family. GISsuJHJ17_rpsI, with no genes belonging to the conjugation module, was integrated into the site of rpsI. All transconjugants did not exhibit obvious fitness cost by growth curve and competition assays when compared with the recipient. The results demonstrate that different erm(B)-carrying elements were presented and highlight the role of these elements in the dissemination of macrolide resistance in S. suis.
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Affiliation(s)
- Li Chen
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Jinhu Huang
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xinxin Huang
- Technical Center for Animal, Plant and Food Inspection and Quarantine of Shanghai Customs, Shanghai, China
| | - Yuping He
- Technical Center for Animal, Plant and Food Inspection and Quarantine of Shanghai Customs, Shanghai, China
| | - Junjie Sun
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xingyang Dai
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Xiaoming Wang
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Muhammad Shafiq
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Liping Wang
- Ministry of Education (MOE) Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
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Yeh JC, Lo DY, Chang SK, Chou CC, Kuo HC. Antimicrobial susceptibility, serotypes and genotypes of Pasteurella multocida
isolates associated with swine pneumonia in Taiwan. Vet Rec 2017; 181:323. [DOI: 10.1136/vr.104023] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 06/23/2017] [Accepted: 07/11/2017] [Indexed: 11/04/2022]
Affiliation(s)
- Jih-Ching Yeh
- Department of Veterinary Medicine; National Chiayi University; Chiayi Taiwan
| | - Dan-Yuan Lo
- Department of Veterinary Medicine; National Chiayi University; Chiayi Taiwan
| | - Shao-Kuang Chang
- Graduate Institute of Veterinary Medicine, National Taiwan University; Taipei Taiwan
| | - Chi-Chung Chou
- Department of Veterinary Medicine; College of Veterinary Medicine, National Chung-Hsing University; Taichung Taiwan
| | - Hung-Chih Kuo
- Department of Veterinary Medicine; National Chiayi University; Chiayi Taiwan
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Petrovski KR, Grinberg A, Williamson NB, Abdalla ME, Lopez-Villalobos N, Parkinson TJ, Tucker IG, Rapnicki P. Susceptibility to antimicrobials of mastitis-causing Staphylococcus aureus, Streptococcus uberis and Str. dysgalactiae from New Zealand and the USA as assessed by the disk diffusion test. Aust Vet J 2016; 93:227-33. [PMID: 26113347 DOI: 10.1111/avj.12340] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 11/10/2014] [Accepted: 12/07/2014] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To compare the antimicrobial susceptibility patterns of three common mastitis pathogens (Staphylococcus aureus, Streptococcus uberis and Str. dysgalactiae) isolated from milk samples from New Zealand and the USA. METHODS A total of 182 S. aureus, 126 Str. uberis and 89 Str. dysgalactiae isolates from New Zealand (107, 106 and 41, respectively) and the USA (75, 20 and 48, respectively) were assessed using the disk diffusion test. RESULTS Susceptibility varied among the bacterial species. All isolates were susceptible to the amoxicillin-clavulanic acid combination. Resistance to lincomycin was most frequent (susceptibility of 8.6%) across all species. Non-susceptible (i.e. resistant or intermediate) isolates of S. aureus were identified for the three non-isoxazolyl penicillins (amoxicillin, ampicillin and penicillin: 20.6% and 36.0%) and lincomycin (99.9% and 94.6%) for NZ and the USA, respectively. Resistance to erythromycin (5.3%) and tetracyclines (6.7%) was detected only in isolates from the USA. There were differences in susceptibility between Str. uberis and Str. dysgalactiae; all streptococcal isolates demonstrated resistance to aminoglycosides (neomycin 52.4% and streptomycin 27.9%) and enrofloxacin (28%). Resistance of Str. dysgalactiae to tetracycline was almost 100.0% and to oxytetracycline 89.9%. CONCLUSION AND CLINICAL RELEVANCE Most of the isolates tested were susceptible to most of the antimicrobials commonly used for treatment of bovine mastitis, with the exception of the lincosamides. Susceptibility to a selected class-representative antimicrobial and at the genus level should be interpreted with caution. Differences between NZ and the USA confirm the value of national surveys to determine the susceptibility patterns of mastitis pathogens.
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Affiliation(s)
- K R Petrovski
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - A Grinberg
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - N B Williamson
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - M E Abdalla
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - N Lopez-Villalobos
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - T J Parkinson
- Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Palmerston North, New Zealand
| | - I G Tucker
- School of Pharmacy, University of Otago, Dunedin, New Zealand
| | - P Rapnicki
- Veterinary Diagnostic Laboratory, University of Minnesota, MN, USA
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Pinto TCA, Costa NS, Corrêa ABDA, de Oliveira ICM, de Mattos MC, Rosado AS, Benchetrit LC. Conjugative transfer of resistance determinants among human and bovine Streptococcus agalactiae. Braz J Microbiol 2014; 45:785-9. [PMID: 25477908 PMCID: PMC4204959 DOI: 10.1590/s1517-83822014000300004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2014] [Accepted: 03/14/2014] [Indexed: 11/22/2022] Open
Abstract
Streptococcus agalactiae (GBS) is a major source of human perinatal diseases and bovine mastitis. Erythromycin (Ery) and tetracycline (Tet) are usually employed for preventing human and bovine infections although resistance to such agents has become common among GBS strains. Ery and Tet resistance genes are usually carried by conjugative transposons (CTns) belonging to the Tn916 family, but their presence and transferability among GBS strains have not been totally explored. Here we evaluated the presence of Tet resistance genes (tetM and tetO) and CTns among Ery-resistant (Ery-R) and Ery-susceptible (Ery-S) GBS strains isolated from human and bovine sources; and analyzed the ability for transferring resistance determinants between strains from both origins. Tet resistance and int-Tn genes were more common among Ery-R when compared to Ery-S isolates. Conjugative transfer of all resistance genes detected among the GBS strains included in this study (ermA, ermB, mef, tetM and tetO), in frequencies between 1.10−7 and 9.10−7, was possible from bovine donor strains to human recipient strain, but not the other way around. This is, to our knowledge, the first report of in vitro conjugation of Ery and Tet resistance genes among GBS strains recovered from different hosts.
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Affiliation(s)
- Tatiana Castro Abreu Pinto
- Instituto de Microbiologia Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Natália Silva Costa
- Instituto de Microbiologia Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ana Beatriz de Almeida Corrêa
- Instituto de Microbiologia Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ivi Cristina Menezes de Oliveira
- Instituto de Microbiologia Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marcos Correa de Mattos
- Instituto de Microbiologia Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Alexandre Soares Rosado
- Instituto de Microbiologia Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Leslie Claude Benchetrit
- Instituto de Microbiologia Paulo de Góes Universidade Federal do Rio de Janeiro Rio de JaneiroRJ Brazil Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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Minst K, Märtlbauer E, Miller T, Meyer C. Short communication: Streptococcus species isolated from mastitis milk samples in Germany and their resistance to antimicrobial agents. J Dairy Sci 2012; 95:6957-62. [PMID: 22999286 DOI: 10.3168/jds.2012-5852] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Accepted: 07/29/2012] [Indexed: 11/19/2022]
Abstract
Mastitis is one of the most frequent infectious diseases in dairy cattle and is a reason for antimicrobial drug usage in dairy cows. The bacteria involved in bovine mastitis are mainly Streptococcus spp., Staphylococcus spp., and coliforms. The aim of this study was to determine antimicrobial resistance among Streptococcus spp. isolated from bovine mastitis milk. Antimicrobial resistance in Strep. uberis (n=227), Strep. dysgalactiae (n=49), and Strep. agalactiae (n=3) was determined for 9 antimicrobial agents using the broth microdilution method in accordance with Clinical and Laboratory Standards Institute recommendations. Of all Streptococcus spp., 13% were multidrug resistant. The rate of multidrug resistance was higher among Strep. uberis (15%) than among Strep. dysgalactiae (6%) and Strep. agalactiae (0%). Resistance to tetracycline was the most common, followed by resistance to erythromycin, pirlimycin, and gentamicin. Resistance rates were higher on farms with more than 80 cows compared with those with fewer than 20 cows. β-Lactams should remain the drugs of choice in the treatment of streptococcal mastitis. The slightly elevated minimum inhibitory concentrations determined for these antibiotics may indicate, however, the emergence of resistant streptococci. To identify such changes in susceptibility as early as possible, antimicrobial resistance in streptococci should be surveyed regularly.
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Affiliation(s)
- K Minst
- Staatliches Tierärztliches Untersuchungsamt Aulendorf-Diagnostikzentrum, Aulendorf, Germany
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Schmitt-van de Leemput E, Zadoks R. Genotypic and Phenotypic Detection of Macrolide and Lincosamide Resistance in Streptococcus uberis. J Dairy Sci 2007; 90:5089-96. [DOI: 10.3168/jds.2007-0101] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lüthje P, Schwarz S. Molecular basis of resistance to macrolides and lincosamides among staphylococci and streptococci from various animal sources collected in the resistance monitoring program BfT-GermVet. Int J Antimicrob Agents 2007; 29:528-35. [PMID: 17307339 DOI: 10.1016/j.ijantimicag.2006.12.016] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2006] [Revised: 12/19/2006] [Accepted: 12/20/2006] [Indexed: 11/21/2022]
Abstract
In this study, erythromycin- and/or clindamycin-resistant isolates among 248 coagulase-positive and coagulase-variable staphylococci and 500 streptococci, collected all over Germany during 2004-2006 in the resistance monitoring program BfT-GermVet, were investigated for their genetic basis of macrolide and/or lincosamide resistance. Staphylococci were sampled from various disease conditions of dogs/cats or pigs, whereas streptococci were from dogs/cats, pigs or horses. Resistant staphylococci were further identified biochemically to species and subspecies level and tested for the resistance genes erm(A), erm(B), erm(C), erm(TR), msr(A), msr(D), mef(A), mph(C), lnu(A), lnu(B) and lnu(C). The methylase genes erm(A), erm(B) and erm(C) were detected in staphylococci, alone or in different combinations. The erm(B) gene was the predominant gene in Staphylococcus intermedius and streptococci. The efflux gene msr(A) and the genes mph(C) and lnu(A) coding for inactivating enzymes were detected in single staphylococcal isolates. The efflux genes mef(A) and msr(D) were detected in three streptococci, in one of them together with the erm(B) gene. The lnu(B) gene was detected in seven porcine streptococcal isolates with reduced susceptibility to clindamycin. These data confirm that high-level resistance to erythromycin and clindamycin in staphylococci and streptococci was mainly due to rRNA methylases. The lnu(B) gene was detected for the first time in streptococci of animal origin.
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Affiliation(s)
- Petra Lüthje
- Institut für Tierzucht, Bundesforschungsanstalt für Landwirtschaft (FAL), Höltystr. 10, 31535 Neustadt-Mariensee, Germany
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Salyers AA, Moon K, Schlessinger D. The human intestinal tract – a hotbed of resistance gene transfer? Part II. ACTA ACUST UNITED AC 2007. [DOI: 10.1016/j.clinmicnews.2007.02.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Nir-Paz R, Block C, Shasha D, Korenman Z, Gorodnitzky Z, Jaffe J, Ron M, Michael-Gayego A, Cohen-Poradosu R, Shapiro M, Moses AE. Macrolide, lincosamide and tetracycline susceptibility and emm characterisation of invasive Streptococcus pyogenes isolates in Israel. Int J Antimicrob Agents 2006; 28:313-9. [PMID: 16973336 DOI: 10.1016/j.ijantimicag.2006.07.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2006] [Revised: 05/29/2006] [Accepted: 05/31/2006] [Indexed: 11/29/2022]
Abstract
Group A beta-haemolytic streptococcus (GAS) causes a variety of infections, including life-threatening illnesses. Although the species is uniformly penicillin susceptible, resistance to other antibiotics is becoming more common. We studied the prevalence of resistance and associated factors in a nationwide, prospective, population-based study of invasive infections in Israel. Isolates were collected in collaboration with 24 hospitals in Israel during 1996-1999. Minimal inhibitory concentrations (MICs) of erythromycin (ERY), clindamycin (CLI) and tetracycline (TET) were determined as well as ERY and TET resistance phenotypes and genotypes. Five hundred isolates were examined: 136 (27.2%) were not susceptible to TET, 10 (2.0%) to ERY and 5 (1%) to CLI. ERY resistance was associated with emm types 12 and 83 (P<0.001 for both). MICs of TET had a bimodal distribution distinguishing sensitive and resistant populations. Non-susceptibility to TET was mainly due to the presence of tet(M) and was associated with T types 3, 3/13/B3624 and 9 and emm types 9, 33, 64, 73, 74, 76, 77 and 83. TET susceptibility was associated with T types 1, 2 and 11, emm types 1-4, 11, 12, 22, 26 and 75 and the presence of speA and speC. In Israel, resistance of invasive GAS isolates to ERY remains low and is associated with specific T and emm types, as is TET resistance. TET resistance is less frequent than previously reported in Israel and is associated with a lower prevalence of speA and speC.
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Affiliation(s)
- Ran Nir-Paz
- Department of Clinical Microbiology and Infectious Diseases, Hadassah-Hebrew University Medical Center, P.O. Box 12000, Jerusalem, Israel
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