{"id":21130,"date":"2023-11-02T20:40:09","date_gmt":"2023-11-02T20:40:09","guid":{"rendered":"https:\/\/www.africa-press.net\/madagascar\/politique\/esperance-de-vie-vieillir-mais-jusqua-quand"},"modified":"2023-11-02T22:00:09","modified_gmt":"2023-11-02T22:00:09","slug":"esperance-de-vie-vieillir-mais-jusqua-quand","status":"publish","type":"post","link":"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand","title":{"rendered":"Esp\u00e9rance de vie\u00a0: vieillir mais jusqu\u2019\u00e0 quand ?"},"content":{"rendered":"<p><span style=\"color: #ff6600\"><strong>Africa-Press &#8211; Madagascar. <\/strong><\/span><b>Le vieillissement est-il programme\u0301 en fonction des espe\u0300ces et de leur habitat, ou est-ce un processus chaotique de de\u0301gradation du soma (l\u2019ensemble des cellules, hors cellules germinales, que compte un individu) ?<\/b><br \/>\n<b>Un lien entre raccourcissement des te\u0301lome\u0300res et mort ?<\/b><\/p>\n<p>\u201cC\u2019est le grand de\u0301bat !\u201d, lance E\u0301ric Gilson. Professeur a\u0300 l\u2019Institut de recherche sur le cancer et le vieillissement a\u0300 Nice, il est le spe\u0301cialiste de l\u2019e\u0301tude des te\u0301lome\u0300res, ces se\u0301quences re\u0301pe\u0301titives d\u2019acides nucle\u0301iques situe\u0301es a\u0300 l\u2019extre\u0301mite\u0301 des chromosomes et qu\u2019elles prote\u0300gent. En se renouvelant, les cellules d\u2019un organisme vivant perdent graduellement ces se\u0301quences. E\u0301ric Gilson e\u0301tudie pre\u0301cise\u0301ment le lien entre leur disparition et la se\u0301nescence. \u201cLes te\u0301lome\u0300res sont programme\u0301s pour se de\u0301grader progressivement, a\u0300 un certain rythme, rappelle le biologiste. Mais rien ne prouve que cette de\u0301gradation conduise a\u0300 la mort.\u201d<\/p>\n<p><b>\u201cVivre en bonne sante\u0301 jusqu\u2019a\u0300 120 ou 125 ans\u201d<\/b><\/p>\n<p>Pour ce qui est d\u2019un a\u0302ge limite vers lequel on pourrait tendre, sa vision est optimiste : \u201cDans un monde ide\u0301al ou\u0300 l\u2019on saura soigner toutes les maladies cardiovasculaires et chroniques, on pourra vivre en bonne sante\u0301 jusqu\u2019a\u0300 120 ou 125 ans.\u201d \u201cDes limites chiffre\u0301es sans fondement, et dicte\u0301es par des croyances\u201d, selon Jean-Marie Robine, professeur e\u0301me\u0301rite a\u0300 l\u2019Inserm (Institut national de la sante\u0301 et de la recherche me\u0301dicale). Il est a\u0300 l\u2019origine de la diffusion, dans les anne\u0301es 1990, du concept d\u2019espe\u0301rance de vie en bonne sante\u0301, un indicateur propose\u0301 par l\u2019Ame\u0301ricain Daniel Sullivan.<\/p>\n<p>\u201cPoser une limite a\u0300 la dure\u0301e de vie tient du mythe !\u201d, ajoute-t-il. Il cite le mode\u0300le du philosophe anglais du 17e sie\u0300cle Francis Bacon : \u201cTout ce qui peut e\u0302tre alimente\u0301 peut e\u0302tre immortel, tant que les fluides circulent.\u201d Selon lui, l\u2019espe\u0301rance de vie va continuer a\u0300 augmenter, mais moins vite. \u201cIl n\u2019y a jamais eu autant d\u2019heures consacre\u0301es a\u0300 la recherche, de laboratoires et d\u2019argent investi. Ce n\u2019est pas imaginable de penser que nos descendants feraient moins de de\u0301couvertes !\u201d<\/p>\n<p><strong>Pour plus d&rsquo;informations et d&rsquo;analyses sur la <a href=\"https:\/\/www.africa-press.net\/madagascar\">Madagascar<\/a>, suivez <a href=\"https:\/\/www.africa-press.net\/\">Africa-Press<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Africa-Press &#8211; Madagascar. Le vieillissement est-il programme\u0301 en fonction des espe\u0300ces et de leur habitat, ou est-ce un processus chaotique de de\u0301gradation du soma (l\u2019ensemble des cellules, hors cellules germinales, que compte un individu) ? Un lien entre raccourcissement des te\u0301lome\u0300res et mort ? \u201cC\u2019est le grand de\u0301bat !\u201d, lance E\u0301ric Gilson. Professeur a\u0300 l\u2019Institut [&hellip;]<\/p>\n","protected":false},"author":82,"featured_media":21129,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22,10],"tags":[36,50,49],"class_list":["post-21130","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-divers","category-toutes-les-actualites","tag-africa-press","tag-africa-press-madagascar","tag-madagascar"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.1 (Yoast SEO v27.0) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Esp\u00e9rance de vie\u00a0: vieillir mais jusqu\u2019\u00e0 quand ? - Madagascar<\/title>\n<meta name=\"description\" content=\"Le vieillissement est-il programme\u0301 en fonction des espe\u0300ces et de leur habitat, ou est-ce un processus chaotique de ...\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Esp\u00e9rance de vie\u00a0: vieillir mais jusqu\u2019\u00e0 quand ?\" \/>\n<meta property=\"og:description\" content=\"Le vieillissement est-il programme\u0301 en fonction des espe\u0300ces et de leur habitat, ou est-ce un processus chaotique de ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand\" \/>\n<meta property=\"og:site_name\" content=\"Madagascar\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-02T20:40:09+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-02T22:00:09+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/11\/sm_1698946148.107112.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"899\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"cfeditorfr\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"cfeditorfr\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand\"},\"author\":{\"name\":\"cfeditorfr\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/#\/schema\/person\/2b1cf3cd81a31e3cd26889ca66d677f1\"},\"headline\":\"Esp\u00e9rance de vie\u00a0: vieillir mais jusqu\u2019\u00e0 quand ?\",\"datePublished\":\"2023-11-02T20:40:09+00:00\",\"dateModified\":\"2023-11-02T22:00:09+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand\"},\"wordCount\":397,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand#primaryimage\"},\"thumbnailUrl\":\"https:\/\/static.africa-press.net\/madagascar\/sites\/56\/2023\/11\/sm_1698946148.107112.jpg\",\"keywords\":[\"Africa Press\",\"Africa Press-Madagascar\",\"Madagascar\"],\"articleSection\":[\"Divers\",\"Toutes les actualit\u00e9s\"],\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand\",\"url\":\"https:\/\/www.africa-press.net\/madagascar\/toutes-les-actualites\/esperance-de-vie-vieillir-mais-jusqua-quand\",\"name\":\"Esp\u00e9rance de vie\u00a0: vieillir mais jusqu\u2019\u00e0 quand ? 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