{"id":5194857,"date":"2012-03-24T19:10:44","date_gmt":"2012-03-24T17:10:44","guid":{"rendered":"https:\/\/www.ozono21.com\/blog\/?p=5194857"},"modified":"2026-02-18T17:38:32","modified_gmt":"2026-02-18T15:38:32","slug":"tuberculosis-resistentes-antibioticos","status":"publish","type":"post","link":"https:\/\/www.ozono21.com\/blog\/bacterias\/tuberculosis-resistentes-antibioticos\/","title":{"rendered":"Hallan porque algunas c\u00e9lulas de tuberculosis son resistentes a los antibi\u00f3ticos"},"content":{"rendered":"<p style=\"text-align: justify;\">\n<h2 style=\"text-align: justify;\"><strong><img loading=\"lazy\" decoding=\"async\"  style=\"margin: 0px 0px 0px 20px; cursor: hand; border: 0px;\"  title=\"Hallan por qu\u00e9 algunas c\u00e9lulas de tuberculosis son resistentes a los antibi\u00f3ticos\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2012\/03\/c\u00e9lulas-de-tuberculosis-son-resistentes-a-los-antibi\u00f3ticos.jpg\" alt=\" tuberculosis \" width=\"272\" height=\"151\"  class=\"alignright\" \/><a title=\"Ozono es Bactercida\" href=\"https:\/\/www.ozono21.com\/sectores-pagina\/empresariales\/desinfeccion-limpieza\/3\/\" target=\"_blank\" rel=\"noopener noreferrer\">Hallan porque algunas c\u00e9lulas de tuberculosis son resistentes a los antibi\u00f3ticos  <\/p>\n<p>Una investigaci\u00f3n liderada por la Escuela de Salud P\u00fablica de Harvard (HSPH) ofrece una nueva explicaci\u00f3n sobre por qu\u00e9 algunas c\u00e9lulas de tuberculosis son m\u00e1s dif\u00edciles de tratar con antibi\u00f3ticos. <\/a><\/strong><\/h2>\n<\/p>\n<p style=\"text-align: justify;\">El descubrimiento, publicado en la \u00faltima edici\u00f3n de la <strong>revista \u00abScience\u00bb,<\/strong> muestra que la manera en que las c\u00e9lulas de micobacteria se dividen y crecen determina su susceptibilidad al tratamiento con f\u00e1rmacos. Los resultados podr\u00edan conducir a nuevas v\u00edas de desarrollo de f\u00e1rmacos que combatan mejor las c\u00e9lulas de la tuberculosis. <\/p>\n<p>Fuente: consumer (18 de diciembre de 2011)<\/p>\n<p style=\"text-align: justify;\"><strong>La tuberculosis es una enfermedad infecciosa que mata a m\u00e1s de un mill\u00f3n y medio de personas cada a\u00f1o.<\/strong> Es una enfermedad dif\u00edcil de tratar, a las personas se les receta una combinaci\u00f3n de antibi\u00f3ticos que toman diariamente durante nueve meses, un r\u00e9gimen dif\u00edcil de seguir para los pacientes y de administrar para las enfermeras y los m\u00e9dicos. Incluso despu\u00e9s de haber comenzado el tratamiento parece que algunas de las c\u00e9lulas infecciosas sobreviven durante largos periodos de tiempo.<\/p>\n<p style=\"text-align: justify;\">\u00abHemos encontrado que las consecuencias de los patrones simples e inesperados de crecimiento de las micobacterias, as\u00ed como su divisi\u00f3n, significan que algunas c\u00e9lulas bacterianas tienen la capacidad de sobrevivir frente a los antibi\u00f3ticos\u00bb, dijo Bree Aldridge, coautor del estudio. Los investigadores de la HSPH se dispusieron a determinar lo que diferencia a una c\u00e9lula que vive de una que muere. Dise\u00f1aron una c\u00e1mara \u00fanica de microfluidos en el que crecieron c\u00e9lulas de Mycobacterium smegmatis (que se comportan de manera similar a las c\u00e9lulas de tuberculosis) y film\u00f3 su crecimiento con un sistema de im\u00e1genes de c\u00e9lulas vivas.<\/p>\n<p style=\"text-align: justify;\"><strong>Los investigadores pensaban que las c\u00e9lulas de M.smegmatis se dividen de forma regular en c\u00e9lulas hijas de tama\u00f1o similar, como hacen otras bacterias como la <em>E.coli<\/em><\/strong><strong>. En su lugar, se sorprendieron al encontrar que las c\u00e9lulas hijas de M.smegmatis fueron incre\u00edblemente diversas, con un tama\u00f1o y tasas de crecimiento muy variables.<\/strong> Encontraron que esta diversidad se debe a que M.smegmatis crece de una manera inusual, con el alargamiento de un solo extremo. Cuando una c\u00e9lula madre asim\u00e9trica se divide, crea c\u00e9lulas hijas que son muy diferentes una de otra en aspectos fundamentales, incluidas las propiedades de su crecimiento. <\/p>\n<p style=\"text-align: justify;\"><strong>Los autores especularon que estas subpoblaciones fisiol\u00f3gicamente distintas de las c\u00e9lulas se traducen en diferencias en la susceptibilidad a los antibi\u00f3ticos, que apuntan a procesos esenciales para el crecimiento y la divisi\u00f3n.<\/strong> Para probar esta hip\u00f3tesis, se trataron las c\u00e9lulas con diferentes tipos de antibi\u00f3ticos y observaron c\u00f3mo respondieron las subpoblaciones de c\u00e9lulas hija. Los resultados mostraron que c\u00e9lulas hijas diferentes exhiben diferentes susceptibilidades a los tratamientos, una fuerte evidencia de que las poblaciones de c\u00e9lulas micobacterianas contienen c\u00e9lulas inherentemente tolerantes a los antibi\u00f3ticos, y proporcionaron una posible hip\u00f3tesis de por qu\u00e9 la tuberculosis es una enfermedad tan dif\u00edcil de tratar. Los investigadores esperan que estos hallazgos lleven al desarrollo de reg\u00edmenes de tratamiento en los que los antibi\u00f3ticos se combinen para dirigirse espec\u00edficamente a las subpoblaciones de c\u00e9lulas tolerantes.<\/p>\n<table border=\"3\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td bgcolor=\"#3b7cff\" height=\"25\" width=\"600\" align=\"center\"><strong><a title=\"Acci&oacute;n del OZONO\" target=\"_blank\" href=\"https:\/\/www.ozono21.com\/actualidad-interna\/accion-del-ozono\/423\/\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" border=\"0\" alt=\"Noticias Relacionadas\" width=\"600\" height=\"25\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2014\/06\/Noticias-Relacionadas.png\" \/><\/a><\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><big><\/p>\n<tbody>\n<ul>\n<li><strong><a title=\"HAY BACTERIAS RESISTENTES A CASI TODOS LOS ANTIBI\u00d3TICOS\" href=\"https:\/\/www.ozono21.com\/blog\/bacterias\/hay-bacterias-resistentes-a-casi-todos-los-antibioticos\/\" target=\"_blank\" rel=\"noopener noreferrer\">HAY BACTERIAS RESISTENTES A CASI TODOS LOS ANTIBI\u00d3TICOS<\/a><\/strong><\/li>\n<li><strong><a title=\"Tuberculosis\" href=\"https:\/\/www.ozono21.com\/blog\/bacterias\/tuberculosis\/\" target=\"_blank\" rel=\"noopener noreferrer\">Tuberculosis<\/a><\/strong><\/li>\n<\/ul>\n<p><\/big><\/p>\n<table border=\"3\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td bgcolor=\"#3b7cff\" height=\"25\" width=\"600\" align=\"center\"><strong><a title=\"Videos YouTube\" target=\"_blank\" href=\"https:\/\/www.youtube.com\/user\/ozono21\/videos?sort=p&amp;view=0&amp;flow=grid\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2014\/06\/Videos-Youtube.png\" alt=\"Videos Youtube\" width=\"600\" height=\"25\" border=\"0\" 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ofrece una nueva explicaci\u00f3n sobre por qu\u00e9 algunas c\u00e9lulas de tuberculosis son m\u00e1s dif\u00edciles de tratar con &hellip; <a href=\"https:\/\/www.ozono21.com\/blog\/bacterias\/tuberculosis-resistentes-antibioticos\/\">Sigue leyendo <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_5194857\" class=\"pvc_stats total_only  \" data-element-id=\"5194857\" style=\"\"><i class=\"pvc-stats-icon small\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v230.4c0 6.4 6.4 12.8 12.8 12.8zm-192 0h22.4c6.4 0 12.8-6.4 12.8-12.8V140.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v198.4c0 6.4 6.4 12.8 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