{"id":716393,"date":"2026-10-03T18:27:03","date_gmt":"2026-10-03T18:27:03","guid":{"rendered":"https:\/\/microscopemedia.com\/?p=716393"},"modified":"2026-10-03T18:27:03","modified_gmt":"2026-10-03T18:27:03","slug":"elixirul-tineretii-ar-putea-exista-cercetatorii-au-observat-ceva-neasteptat-la-organele-imbatranite","status":"publish","type":"post","link":"https:\/\/microscopemedia.com\/?p=716393","title":{"rendered":"\u201eElixirul tinere\u021bii\u201d ar putea exista Cercet\u0103torii au observat ceva nea\u0219teptat la organele \u00eemb\u0103tr\u00e2nite"},"content":{"rendered":"
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Inimi mai \u00een v\u00e2rst\u0103 la pacien\u021bi mai tineri<\/h2>\n

Oamenii de \u0219tiin\u021b\u0103 care analizeaz\u0103 transplanturile au descoperit c\u0103 organele \u00ee\u0219i ajusteaz\u0103 rapid v\u00e2rsta biologic\u0103 pentru a se potrivi cu cea a organismului \u00een care ajung dup\u0103 interven\u021bie, potrivit The Independent<\/a>.<\/p>\n

Studiul a ar\u0103tat c\u0103 inimile mai \u00een v\u00e2rst\u0103 transplantate unor pacien\u021bi mai tineri au prezentat semne clare de \u00eentinerire biologic\u0103, \u00een timp ce inimile mai tinere transplantate unor organisme mai \u00een v\u00e2rst\u0103 au \u00eemb\u0103tr\u00e2nit \u00eentr-un ritm accelerat.<\/p>\n

\u201eAcest studiu str\u0103lucit este \u00een concordan\u021b\u0103 cu noile cercet\u0103ri privind \u00een\u021belegerea procesului de \u00eemb\u0103tr\u00e2nire \u0219i efectul factorilor din s\u00e2nge, care ar putea de\u021bine r\u0103spunsurile pentru \u00abf\u00e2nt\u00e2na tinere\u021bii\u00bb\u201d, a declarat dr. Bartley Griffith, chirurg la Universitatea din Maryland, care a realizat primul transplant de inim\u0103 de porc modificat\u0103 genetic la un om.<\/p>\n

Ce au descoperit cercet\u0103torii la \u0219oareci<\/h2>\n

Cercet\u0103torii au testat ini\u021bial teoria prin transplantarea unor inimi \u00eentre \u0219oareci din trei grupe de v\u00e2rst\u0103 diferite.<\/p>\n

La patru p\u00e2n\u0103 la \u0219ase luni dup\u0103 interven\u021bii, analiza \u021besuturilor a ar\u0103tat c\u0103 metilarea ADN-ului, un marker chimic important folosit pentru m\u0103surarea \u00eemb\u0103tr\u00e2nirii celulare, se modificase radical pentru a reflecta \u201eceasul\u201d organismului gazd\u0103.<\/p>\n

Efectul observat \u0219i la oameni<\/h2>\n

Pentru a vedea dac\u0103 acelea\u0219i reguli se aplic\u0103 \u0219i \u00een cazul oamenilor, autorul principal, Jesse Poganik, \u0219i echipa sa au analizat probe de biopsie de la 11 persoane care au primit transplanturi de inim\u0103 la Brigham and Women\u2019s Hospital din Boston.<\/p>\n

\u00cen cazurile analizate existau diferen\u021be semnificative de v\u00e2rst\u0103 \u00eentre donatori \u0219i primitori, cuprinse \u00eentre opt \u0219i 50 de ani.<\/p>\n

Analiza dosarelor medicale electronice, realizat\u0103 la un an dup\u0103 interven\u021bie, a ar\u0103tat c\u0103 indicatori importan\u021bi, printre care ritmul cardiac, grosimea mu\u0219chiului \u0219i capacitatea de efort, erau mai apropia\u021bi de v\u00e2rsta primitorului dec\u00e2t de v\u00e2rsta ini\u021bial\u0103 a donatorului.<\/p>\n

\u201eUnele, dar nu toate, m\u0103sur\u0103torile func\u021bionale au corespuns ipotezei potrivit c\u0103reia aceste inimi mai \u00een v\u00e2rst\u0103, aflate \u00een organisme mai tinere, func\u021bionau ca \u0219i cum ar fi fost biologic mai tinere \u0219i invers\u201d, a explicat dr. Poganik, ad\u0103ug\u00e2nd c\u0103 unele modific\u0103ri fizice r\u0103m\u00e2n ireversibile.<\/p>\n

\u201eCeasul\u201d biologic al inimii se schimb\u0103<\/h3>\n

Cercet\u0103torii au confirmat c\u0103, de\u0219i ceasul biologic intern al inimii s-a modificat, nu au fost declan\u0219ate schimb\u0103ri ale v\u00e2rstei biologice \u00een celelalte organe ale primitorilor.<\/p>\n

Exper\u021bii consider\u0103 acum c\u0103 descoperirea ar putea schimba nu doar modul \u00een care sunt alocate organele donate, ci \u0219i cercetarea privind \u00eemb\u0103tr\u00e2nirea \u0219i posibilitatea ca acest proces s\u0103 fie reversibil.<\/p>\n

Chirurgii cardiaci au fost \u00een trecut mai reticen\u021bi \u00een folosirea inimilor provenite de la donatori \u00een v\u00e2rst\u0103 pentru pacien\u021bi tineri, \u00eens\u0103 rezultatele studiului ar putea pune sub semnul \u00eentreb\u0103rii unele dintre presupunerile medicale existente.<\/p>\n","protected":false},"excerpt":{"rendered":"

Inimi mai \u00een v\u00e2rst\u0103 la pacien\u021bi mai tineri Oamenii de \u0219tiin\u021b\u0103 care analizeaz\u0103 transplanturile au descoperit c\u0103 organele \u00ee\u0219i ajusteaz\u0103 rapid v\u00e2rsta biologic\u0103 pentru a se potrivi cu cea a … Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":716394,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"Default","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/716393"}],"collection":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=716393"}],"version-history":[{"count":0,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/posts\/716393\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=\/wp\/v2\/media\/716394"}],"wp:attachment":[{"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=716393"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=716393"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/microscopemedia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=716393"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}