Perfil de resistencia a la tetraciclina de Cutibacterium acnes en pacientes con acné vulgar en un centro dermatológico de Colombia / Cutibacterium Acnes Tetracycline Resistance Profile in Patients with Acne Vulgaris, in a Colombian Dermatologic Center

Introducción El acné es una enfermedad inflamatoria crónica, en cuya patogenia intervienen diferentes actores, siendo Cutibacterium acnes (C. acnes) uno de ellos. La resistencia de esta bacteria a los diferentes fármacos antimicrobianos utilizados en su tratamiento ha sido descrita en diferentes regiones del mundo. El objetivo de este estudio fue estimar la resistencia de C. acnes a las ciclinas en pacientes mayores de 18 años con acné de moderado a severo. Materiales y métodos Se realizó un estudio transversal analítico. Se obtuvieron muestras de las lesiones inflamatorias con un extractor de comedones. Se incubó el contenido de las muestras en ambiente anaeróbico para aislar C. acnes. Por último, se estimó la susceptibilidad de C. acnes a la tetraciclina, minociclina y doxiciclina. Resultados Se obtuvieron muestras de 147 pacientes, observándose crecimiento de C. acnes en 129 de ellos, y encontrándose que el 5,43% de las cepas era resistente a tetraciclina, el 5,43% a doxiciclina, el 0,78% a minociclina, y una resistencia cruzada entre doxiciclina y tetraciclina en todos los casos. Se encontró una asociación entre resistencia y edad igual o superior a 25 años. No se encontró asociación con el uso previo de antibióticos, historia de mal uso de antibióticos orales o tópicos y otras características demográficas y clínicas evaluadas. Conclusiones La resistencia a las ciclinas encontrada en C. acnes fue menor que la reportada en otros estudios. Aunque no se encontró relación con el uso previo de antibióticos, se trata de un factor descrito en estudios previos, por lo que el uso correcto de los mismos es imperativo para evitar la aparición de resistencia (AU)

Introduction Acne is a chronic inflammatory disease, in which different events intervene in its pathogenesis, one of which is Cutibacterium acnes (C. acnes). Resistance of this bacteria to different antimicrobials used in treatment has been described in different regions of the world. The purpose of the study is to estimate the resistance of C. acnes to cyclins in patients with moderate and severe acne over 18 years of age. Materials and Methods An analytical cross-sectional study was carried out. Samples were taken from inflammatory lesions with a comedone extractor. The content of the samples was incubated in an anaerobic atmosphere to grow C. acnes. Finally, the susceptibility of C. acnes to tetracycline, minocycline and doxycycline was determined. Result Samples were taken from 147 patients, of which 129 showed growth of C. acnes, finding that 5.43% of the strains were resistant to tetracycline, 5.43% to doxycycline, 0.78% to minocycline and cross resistance between doxycycline and tetracycline in all the cases. An association was found between resistance and being 25 years of age or older. No association was found with the prior use of antibiotics, a history of misuse of oral or topical antibiotics, and other demographic and clinical characteristics evaluated. Conclusions The resistance found of C. acnes to cyclines was lower than that reported in other studies. Although no relationship was found with the previous use of antibiotics, it is a factor described in previous studies, which is why the proper use of antibiotics is imperative to avoid the appearance of resistance (AU)

Cutibacterium Acnes Tetracycline Resistance Profile in Patients with Acne Vulgaris, in a Colombian Dermatologic Center. / Perfil de resistencia a la tetraciclina de Cutibacterium acnes en pacientes con acné vulgar en un centro dermatológico de Colombia.

INTRODUCTION: Acne is a chronic inflammatory disease, in which different events intervene in its pathogenesis, one of which is Cutibacterium acnes (C. acnes). Resistance of this bacteria to different antimicrobials used in treatment has been described in different regions of the world. The purpose of the study is to estimate the resistance of C. acnes to cyclins in patients with moderate and severe acne over 18 years of age. MATERIALS AND METHODS: An analytical cross-sectional study was carried out. Samples were taken from inflammatory lesions with a comedone extractor. The content of the samples was incubated in an anaerobic atmosphere to grow C. acnes. Finally, the susceptibility of C. acnes to tetracycline, minocycline and doxycycline was determined. RESULTS: Samples were taken from 147 patients, of which 129 showed growth of C. acnes, finding that 5.43% of the strains were resistant to tetracycline, 5.43% to doxycycline, 0.78% to minocycline and cross resistance between doxycycline and tetracycline in all the cases. An association was found between resistance and being 25 years of age or older. No association was found with the prior use of antibiotics, a history of misuse of oral or topical antibiotics, and other demographic and clinical characteristics evaluated. CONCLUSIONS: The resistance found of C. acnes to cyclines was lower than that reported in other studies. Although no relationship was found with the previous use of antibiotics, it is a factor described in previous studies, which is why the proper use of antibiotics is imperative to avoid the appearance of resistance.

Actividad bactericida del ácido hipocloroso / Bactericidal activity of hipochlorous acid (HCLO) against five strains in nosocomial infection

El aumento de las infecciones nosocomiales ha llevado a las instituciones de salud a mejorar las medidas de asepsia y antisepsia; dentro de estas, la búsqueda de un desinfectante eficaz que contribuya a este problema. El ácido hipocloroso (HC10) es un ion no disociado del cloro, responsable de la acción bactericida de los compuestos derivados del cloro, no es corrosivo ni cáustico y es conocido como un potente desinfectante. Este estudio evalúo la efectividad bactericida del HC10 sobre cinco cepas bacterianas causantes de infección intrahospitalaria, utilizando la técnica de Kelsey Maurer en condiciones controladas de temperatura, concentración del HC10 y tiempo de acción; se realizo una modificación con adición de albúmina al 5 por ciento. Se determinó que el HC10 es efectivo a concentraciones iguales o mayores a 900 ppm, luego de 10 minutos de acción para todas las cepas estudiadas con o sin la adición de proteínas