Isidora Beatriz | Duoc Uc (original) (raw)
Address: Concepción, Chile
less
Uploads
Papers by Isidora Beatriz
Journal of Clinical Microbiology, 2008
Mycobacterium avium complex (MAC) organisms from clinical samples may occur in patients without c... more Mycobacterium avium complex (MAC) organisms from clinical samples may occur in patients without clinical disease, making the interpretation of results difficult. The clinical relevance of MAC isolates from different types of clinical samples (n ؍ 47) from 39 patients in different sections of a hospital was assessed by comparison with environmental isolates (n ؍ 17) from the hospital. Various methods for identification and typing (commercial probes, phenotypic characteristics, PCR for detection of IS1245 and IS901, sequencing of the hsp65 gene, and pulsed-field gel electrophoresis) were evaluated. The same strain was found in all the environmental isolates, 21 out of 23 (91.3%) of the isolates cultured from urine samples, and 5 out of 19 (26.3%) isolates from respiratory specimens. This strain did not cause disease in the patients. Testing best characterized the strain as M. avium subsp. hominissuis, with the unusual feature that 81.4% of these isolates lacked the IS1245 element. Contamination of certain clinical samples with an environmental strain was the most likely event; therefore, characterization of the environmental mycobacteria present in health care facilities should be performed to discard false-positive isolations in nonsterile samples, mainly urine samples. Molecular techniques applied in this study demonstrated their usefulness for this purpose.
El siguiente informe pretende destacar la importancia de los plásticos y su reciclaje. Estos, se ... more El siguiente informe pretende destacar la importancia de los plásticos y su reciclaje. Estos, se utilizan para la fabricación de productos de uso cotidiano, tales como envases de bebidas, juguetes y muebles. El uso generalizado de plásticos exige una buena gestión de vida del producto hasta su fin. Plásticos representan más del 12 % de la cantidad de residuos sólidos urbanos, un aumento espectacular desde 1960, cuando los plásticos fueron menos del 1% del flujo de residuos.
Journal of Clinical Microbiology, 2008
Mycobacterium avium complex (MAC) organisms from clinical samples may occur in patients without c... more Mycobacterium avium complex (MAC) organisms from clinical samples may occur in patients without clinical disease, making the interpretation of results difficult. The clinical relevance of MAC isolates from different types of clinical samples (n ؍ 47) from 39 patients in different sections of a hospital was assessed by comparison with environmental isolates (n ؍ 17) from the hospital. Various methods for identification and typing (commercial probes, phenotypic characteristics, PCR for detection of IS1245 and IS901, sequencing of the hsp65 gene, and pulsed-field gel electrophoresis) were evaluated. The same strain was found in all the environmental isolates, 21 out of 23 (91.3%) of the isolates cultured from urine samples, and 5 out of 19 (26.3%) isolates from respiratory specimens. This strain did not cause disease in the patients. Testing best characterized the strain as M. avium subsp. hominissuis, with the unusual feature that 81.4% of these isolates lacked the IS1245 element. Contamination of certain clinical samples with an environmental strain was the most likely event; therefore, characterization of the environmental mycobacteria present in health care facilities should be performed to discard false-positive isolations in nonsterile samples, mainly urine samples. Molecular techniques applied in this study demonstrated their usefulness for this purpose.
El siguiente informe pretende destacar la importancia de los plásticos y su reciclaje. Estos, se ... more El siguiente informe pretende destacar la importancia de los plásticos y su reciclaje. Estos, se utilizan para la fabricación de productos de uso cotidiano, tales como envases de bebidas, juguetes y muebles. El uso generalizado de plásticos exige una buena gestión de vida del producto hasta su fin. Plásticos representan más del 12 % de la cantidad de residuos sólidos urbanos, un aumento espectacular desde 1960, cuando los plásticos fueron menos del 1% del flujo de residuos.