{"id":5193653,"date":"2011-11-30T18:38:29","date_gmt":"2011-11-30T16:38:29","guid":{"rendered":"https:\/\/www.ozono21.com\/blog\/?p=5193653"},"modified":"2026-01-23T19:33:47","modified_gmt":"2026-01-23T17:33:47","slug":"peste-la-bacteria-de-su-origen","status":"publish","type":"post","link":"https:\/\/www.ozono21.com\/blog\/bacterias\/peste-la-bacteria-de-su-origen\/","title":{"rendered":"Los peque\u00f1os cambios que dieron origen a la bacteria de La Peste"},"content":{"rendered":"<p style=\"text-align: justify;\"><H2 style=\"text-align: justify;\"><strong><img loading=\"lazy\" decoding=\"async\" title=\"Los peque\u00f1os cambios que dieron origen a la bacteria de La Peste \" class=\"alignleft size-medium wp-image-5193654\" style=\"margin: 13px; border-width: 0px;\"  src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2011\/11\/Bacteria-de-La-Peste-300x221.jpg\" alt=\" Peste \" title=\"Ozono21 Bactericida\"  width=\"181\" height=\"191\" \/><a title=\"Ozono21 Bactericida\" href=\"https:\/\/www.ozono21.com\/sectores-pagina\/empresariales\/desinfeccion-limpieza\/3\/\" target=\"_blank\" rel=\"noopener noreferrer\">En un abrir y cerrar de ojos evolutivo, una bacteria que causaba una irritaci\u00f3n estomacal leve se convirti\u00f3 en una asesina responsable de la pandemia m\u00e1s devastadora en la historia humana. La peste bub\u00f3nica ha matado a m\u00e1s de 200 millones de personas en el transcurso de la historia, es la enfermedad infecciosa aguda m\u00e1s devastadora conocida por el Ser Humano.<\/a><\/strong><\/h2>\n<\/p>\n<p>Fuente: noticiasdelaciencia.com (6 Oct. 2011)<\/p>\n<p style=\"text-align: justify;\">\u00bfC\u00f3mo la poco peligrosa <strong>Yersinia pseudotuberculosis<\/strong> se convirti\u00f3 en la letal <strong>Yersinia pestis<\/strong>, causante de la enfermedad com\u00fanmente conocida como La Peste.<\/p>\n<p style=\"text-align: justify;\">Hay algunas explicaciones plausibles, pero ninguna convence a toda la comunidad cient\u00edfica. Ahora, unos <strong>cient\u00edficos de la Escuela Feinberg de Medicina de la Universidad del Noroeste, en Estados Unidos,<\/strong> han aportado una nueva explicaci\u00f3n de c\u00f3mo estos dos pat\u00f3genos, con materiales gen\u00e9ticos pr\u00e1cticamente id\u00e9nticos, pueden producir dos enfermedades tan diferentes.<\/p>\n<p style=\"text-align: justify;\">El equipo de investigaci\u00f3n ha usado nuevas t\u00e9cnicas de secuenciaci\u00f3n de ADN, y ha logrado identificar una fuente inesperada de estas diferencias, que podr\u00eda ayudar a explicar la r\u00e1pida evoluci\u00f3n de La Peste.<\/p>\n<p style=\"text-align: justify;\">Los resultados sugieren c\u00f3mo la nueva tecnolog\u00eda se podr\u00eda utilizar para ayudar en el desarrollo de tratamientos destinados a combatir enfermedades mortales como la citada.<\/p>\n<p style=\"text-align: justify;\"><strong>Mucha gente piensa que La Peste es una enfermedad del pasado, pero sigue siendo un problema de salud p\u00fablica actualmente, tanto en las personas como en los animales, tal como advierte Wyndham Lathem, autor principal del estudio.<\/strong> La bacteria de La Peste es extremadamente peligrosa y muy virulenta. Sin tratamiento, pueden bastarle a un paciente tan s\u00f3lo de tres a cinco d\u00edas para pasar de la infecci\u00f3n a la muerte.<\/p>\n<p style=\"text-align: justify;\"><strong>La Organizaci\u00f3n Mundial de la Salud informa de 1.000 a 3.000 casos de Peste cada a\u00f1o en el mundo.<\/strong> De hecho, la bacteria causante, la <strong>Yersinia pestis,<\/strong> est\u00e1 presente en todos los continentes excepto en la Ant\u00e1rtida.<strong>El ancestro de La Peste, la Y. pseudotuberculosis, a\u00fan existe e infecta a humanos,<\/strong> pero causa una enfermedad gastrointestinal leve y la mayor\u00eda de la gente no muestra s\u00edntomas.<\/p>\n<p style=\"text-align: justify;\"><strong>El equipo de Lathem y Jovanka Koo ha descubierto que las diferencias entre estas dos subespecies<\/strong> en cuanto al nivel de da\u00f1os que causan surgieron seguramente a partir de cambios en los sARNs (ARNs de peque\u00f1o tama\u00f1o y no codificantes). Estas mol\u00e9culas nunca se traducen en prote\u00ednas, a diferencia del tradicional ARN \u00abmensajero\u00bb que es copiado del ADN para crear prote\u00ednas y que es bien conocido por los cient\u00edficos.<\/p>\n<p style=\"text-align: justify;\">Dentro de las c\u00e9lulas bacterianas existen cientos de mol\u00e9culas de ARN no codificante, pero, hasta hace poco, en muchos casos los cient\u00edficos no hab\u00edan logrado determinar su funci\u00f3n.<\/p>\n<p style=\"text-align: justify;\">El equipo de Lathem identific\u00f3 a 150 sARNs, la mayor\u00eda de los cuales son espec\u00edficos de la especie Yersinia, y seis sARNs exclusivos de la Y. pseudotuberculosis. Las diferencias son las responsables de la virulencia de la bacteria de La Peste.<\/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=\"Actualidad ACCION del OZONO\" href=\"https:\/\/www.ozono21.com\/actualidad-interna\/accion-del-ozono\/423\/\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2014\/06\/Noticias-Relacionadas.png\" alt=\"Actualidad ACCION del OZONO\" width=\"600\" height=\"25\" border=\"0\" \/><\/a><\/strong>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td width=\"150\" height=\"150\" align=\"center\"><a title=\"Infecciones Bacterianas\" href=\"https:\/\/www.ozono21.com\/blog\/?s=+infecciones+bacterianas+\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\"  src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/uploads\/2014\/07\/BACTERIAS_11.jpg\"  alt=\"peste\" width=\"145\" height=\"145\" class=\"alignright size-full wp-image-5207224\"  style=\"margin: 10px 10px 0px 0px; cursor: hand; border: 0px;\" border=\"0\" \/><\/a><\/td>\n<td width=\"300\" height=\"150\" style=\"text-align: left; vertical-align: middle;\"><big><strong><a title=\"Infecciones Bacterianas\" href=\"https:\/\/www.ozono21.com\/blog\/?s=+infecciones+bacterianas+\" target=\"_blank\" rel=\"noopener noreferrer\">Infecciones Bacterianas<\/a><\/strong><\/big><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\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\" \/><\/a><\/strong>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><iframe loading=\"lazy\" width=\"549\" height=\"412\" src=\"https:\/\/www.youtube.com\/embed\/rzeWAeUnGLA\" frameborder=\"0\" allow=\"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_5193653\" class=\"pvc_stats total_only  \" data-element-id=\"5193653\" 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 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div class=\"pvc_clear\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>En un abrir y cerrar de ojos evolutivo, una bacteria que causaba una irritaci\u00f3n estomacal leve se convirti\u00f3 en una asesina responsable de la pandemia m\u00e1s devastadora en la historia humana. La peste bub\u00f3nica ha matado a m\u00e1s de 200 &hellip; <a href=\"https:\/\/www.ozono21.com\/blog\/bacterias\/peste-la-bacteria-de-su-origen\/\">Sigue leyendo <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n<div class=\"pvc_clear\"><\/div>\n<p id=\"pvc_stats_5193653\" class=\"pvc_stats total_only  \" data-element-id=\"5193653\" 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 12.8 12.8zm96 0h22.4c6.4 0 12.8-6.4 12.8-12.8V204.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v134.4c0 6.4 6.4 12.8 12.8 12.8zM496 400H48V80c0-8.84-7.16-16-16-16H16C7.16 64 0 71.16 0 80v336c0 17.67 14.33 32 32 32h464c8.84 0 16-7.16 16-16v-16c0-8.84-7.16-16-16-16zm-387.2-48h22.4c6.4 0 12.8-6.4 12.8-12.8v-70.4c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 12.8v70.4c0 6.4 6.4 12.8 12.8 12.8z\" class=\"\"><\/path><\/svg><\/i> <img loading=\"lazy\" decoding=\"async\" width=\"16\" height=\"16\" alt=\"Loading\" src=\"https:\/\/www.ozono21.com\/blog\/wp-content\/plugins\/page-views-count\/ajax-loader-2x.gif\" border=0 \/><\/p>\n<div 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