Artigo
Re-evaluation of antibiotic and mercury resistance in Escherichia coli populations isolated in 1978 from Amazonian rubber tree tappers and Indians
Fecha
1999-07-01Registro en:
Research in Microbiology, v. 150, n. 6, p. 407-411, 1999.
0923-2508
10.1016/S0923-2508(99)80076-X
2-s2.0-0032725801
Autor
Universidade Federal de Minas Gerais (UFMG)
Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
Resumen
A study was carried out to assess the stability of antimicrobial susceptibility of wild isolates upon long-term storage using fifty-three Escherichia coli strains isolated in 1978 from feces of healthy children from the Amazon region in Brazil, exposed to low levels of antimicrobial agents, and examined for resistance to mercury and four antibiotics. All of the strains were kept in Lignieres medium at room temperature and were transferred to fresh media four times during this period. Thirty-five out of the 53 strains analyzed in 1978 were viable. Upon recovery, antibiotic and mercury resistance was estimated. All of the 35 strains maintained their original phenotype in a stable fashion, except for one multiresistant strain which became susceptible to kanamycin. Fifty-four percent of the strains exhibited a resistance phenotype, among which 47% had conjugative plasmids.
Materias
Ítems relacionados
Mostrando ítems relacionados por Título, autor o materia.
-
El sonido, ¿resiste? : La música como símbolo de resistencia
Martínez Castillo, Rubén -
Acquisition of a natural resistance gene renders a clinical strain of methicillin-resistant Staphylococcus aureus resistant to the synthetic antibiotic linezolid
Toh, Seok-Ming; Xiong, Liqun; Arias, Cesar A.; Villegas, María Virginia; Lolans, Karen; Quinn, John; Mankin, Alexander S. (Molecular microbiology, 2007)