CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, Colombia
OBJECTIVE: Describe the presence of CTX-M-1 phylogenetic subgroup extended-spectrum i-lactamases (ESBL), associated with TEM and SHV genes, and the gene encoding cephalosporinase, CMY-2 in Escherichia coli and Klebsiella pneumoniae isolates from community-acquired urinary tract infections. METHODS:...
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| Format: | Article |
| Language: | English |
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Elsevier
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| Series: | Brazilian Journal of Infectious Diseases |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000500003&lng=en&tlng=en |
| _version_ | 1811221826783674368 |
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| author | Pedro Martinez Denisse Garzón Salim Mattar |
| author_facet | Pedro Martinez Denisse Garzón Salim Mattar |
| author_sort | Pedro Martinez |
| collection | DOAJ |
| description | OBJECTIVE: Describe the presence of CTX-M-1 phylogenetic subgroup extended-spectrum i-lactamases (ESBL), associated with TEM and SHV genes, and the gene encoding cephalosporinase, CMY-2 in Escherichia coli and Klebsiella pneumoniae isolates from community-acquired urinary tract infections. METHODS: 102 E. coli and 21 K. pneumoniae were collected from patients with culture-proven urinary tract infection (UTI), during February and March, 2011. Antimicrobial susceptibility test was performed by disk diffusion according to the standards of the Clinical Laboratory Standard Institute. Screening for cephalosporins-resistant E. coli and K. pneumoniae was performed by PCR assay for blaTEM, blaSHV, blaCTX-M-1,-2,-8,-9, blaPER-2 and blaCMY-2 genes. Statistical analysis was performed by chi-squared test and multivariate logistic regression analysis. RESULTS: ESBL production was detected in 12 (11.7%) E. coli and four (19%) K. pneumoniae isolates. TEM ESBLs were detected in seven E. coli and three K. pneumoniae isolates. SHV ESBLs were found in four K. pneumoniae isolates. CTX-M-1 phylogenetic subgroup was positive in seven E. coli and three K. pneumoniae isolates. CMY-2 β-lactamase gene was detected in nine E. coli and one K. pneumoniae isolates. A significant association of ESBL expression in E. coli was observed with resistance to tobramycin (p < 0.001), tetracycline (p = 0.043), and ciprofloxacin (p < 0.001). In K. pneumoniae isolates, significant association was found with resistance to tobramycin and ciprofloxacin (p = 0.006), and trimethoprim-sulfamethoxazole (p = 0.043). Multivariate analyses did not show association between ESBL production in E. coli and K. pneumoniae, and resistance to non-β-lactams drugs. CONCLUSIONS: CTX-M ESBL in uropathogens isolated from the community is cause for concern due to the enormous potential for multidrug resistance from strains that produce these enzymes, which could lead to failure of empirically-administered therapies and development of complicated UTIs. |
| first_indexed | 2024-04-12T08:06:48Z |
| format | Article |
| id | doaj.art-8e5f96eff9ee442a800885cc92583560 |
| institution | Directory Open Access Journal |
| issn | 1678-4391 |
| language | English |
| last_indexed | 2024-04-12T08:06:48Z |
| publisher | Elsevier |
| record_format | Article |
| series | Brazilian Journal of Infectious Diseases |
| spelling | doaj.art-8e5f96eff9ee442a800885cc925835602022-12-22T03:41:07ZengElsevierBrazilian Journal of Infectious Diseases1678-439116542042510.1016/j.bjid.2012.05.001S1413-86702012000500003CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, ColombiaPedro Martinez0Denisse Garzón1Salim Mattar2Universidad de CórdobaUniversidad de CórdobaUniversidad de CórdobaOBJECTIVE: Describe the presence of CTX-M-1 phylogenetic subgroup extended-spectrum i-lactamases (ESBL), associated with TEM and SHV genes, and the gene encoding cephalosporinase, CMY-2 in Escherichia coli and Klebsiella pneumoniae isolates from community-acquired urinary tract infections. METHODS: 102 E. coli and 21 K. pneumoniae were collected from patients with culture-proven urinary tract infection (UTI), during February and March, 2011. Antimicrobial susceptibility test was performed by disk diffusion according to the standards of the Clinical Laboratory Standard Institute. Screening for cephalosporins-resistant E. coli and K. pneumoniae was performed by PCR assay for blaTEM, blaSHV, blaCTX-M-1,-2,-8,-9, blaPER-2 and blaCMY-2 genes. Statistical analysis was performed by chi-squared test and multivariate logistic regression analysis. RESULTS: ESBL production was detected in 12 (11.7%) E. coli and four (19%) K. pneumoniae isolates. TEM ESBLs were detected in seven E. coli and three K. pneumoniae isolates. SHV ESBLs were found in four K. pneumoniae isolates. CTX-M-1 phylogenetic subgroup was positive in seven E. coli and three K. pneumoniae isolates. CMY-2 β-lactamase gene was detected in nine E. coli and one K. pneumoniae isolates. A significant association of ESBL expression in E. coli was observed with resistance to tobramycin (p < 0.001), tetracycline (p = 0.043), and ciprofloxacin (p < 0.001). In K. pneumoniae isolates, significant association was found with resistance to tobramycin and ciprofloxacin (p = 0.006), and trimethoprim-sulfamethoxazole (p = 0.043). Multivariate analyses did not show association between ESBL production in E. coli and K. pneumoniae, and resistance to non-β-lactams drugs. CONCLUSIONS: CTX-M ESBL in uropathogens isolated from the community is cause for concern due to the enormous potential for multidrug resistance from strains that produce these enzymes, which could lead to failure of empirically-administered therapies and development of complicated UTIs.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000500003&lng=en&tlng=enESBLCTX-ME. coliK. pneumoniaCommunity-acquired UTIsColombia |
| spellingShingle | Pedro Martinez Denisse Garzón Salim Mattar CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, Colombia Brazilian Journal of Infectious Diseases ESBL CTX-M E. coli K. pneumonia Community-acquired UTIs Colombia |
| title | CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, Colombia |
| title_full | CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, Colombia |
| title_fullStr | CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, Colombia |
| title_full_unstemmed | CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, Colombia |
| title_short | CTX-M-producing Escherichia coli and Klebsiella pneumoniae isolated from community-acquired urinary tract infections in Valledupar, Colombia |
| title_sort | ctx m producing escherichia coli and klebsiella pneumoniae isolated from community acquired urinary tract infections in valledupar colombia |
| topic | ESBL CTX-M E. coli K. pneumonia Community-acquired UTIs Colombia |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-86702012000500003&lng=en&tlng=en |
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