{"id":37571,"date":"2025-03-07T10:45:17","date_gmt":"2025-03-07T10:45:17","guid":{"rendered":"https:\/\/247stiri.ro\/index.php\/2025\/03\/07\/de-ce-femeile-traiesc-mai-mult-si-imbatranesc-mai-bine-decat-barbatii-cercetatorii-ar-putea-avea-in-sfarsit-explicatia\/"},"modified":"2025-03-07T10:45:17","modified_gmt":"2025-03-07T10:45:17","slug":"de-ce-femeile-traiesc-mai-mult-si-imbatranesc-mai-bine-decat-barbatii-cercetatorii-ar-putea-avea-in-sfarsit-explicatia","status":"publish","type":"post","link":"https:\/\/247stiri.ro\/index.php\/2025\/03\/07\/de-ce-femeile-traiesc-mai-mult-si-imbatranesc-mai-bine-decat-barbatii-cercetatorii-ar-putea-avea-in-sfarsit-explicatia\/","title":{"rendered":"De ce femeile tr\u0103iesc mai mult \u0219i \u00eemb\u0103tr\u00e2nesc mai bine dec\u00e2t b\u0103rba\u021bii. Cercet\u0103torii ar putea avea \u00een sf\u00e2r\u0219it explica\u021bia"},"content":{"rendered":"

Femeile au o speran\u021b\u0103 de via\u021b\u0103 medie cu cinci ani mai mare dec\u00e2t cea a b\u0103rba\u021bilor \u0219i sunt mai pu\u021bin expuse riscurilor de declin cognitiv sever \u0219i afec\u021biuni cardiace. Un studiu recent sugereaz\u0103 c\u0103 secretul longevit\u0103\u021bii feminine ar putea fi legat de un mecanism biologic surprinz\u0103tor: pe m\u0103sur\u0103 ce \u00eemb\u0103tr\u00e2nesc, cromozomul X \u201einactiv\u201d al femeilor se reactiveaz\u0103, av\u00e2nd un rol protector asupra creierului.<\/p>\n

Spre deosebire de b\u0103rba\u021bi, care dispun de un singur cromozom X, femeile au dou\u0103, dar unul dintre ace\u0219tia este dezactivat \u00een primele etape ale dezvolt\u0103rii embrionare. Anterior, se considera c\u0103 acest cromozom r\u0103m\u00e2ne inactiv pe tot parcursul vie\u021bii. Totu\u0219i, cercet\u0103torii de la Universitatea din California au descoperit c\u0103, \u00een cazul femelelor \u00een v\u00e2rst\u0103 studiate, cromozomul X inactiv se \u201eactiveaz\u0103\u201d din nou \u0219i colaboreaz\u0103 cu cel activ pentru a genera o protein\u0103 esen\u021bial\u0103 \u00een protejarea celulelor cerebrale.<\/p>\n

Profesoara Dena Dubal, expert \u00een \u00eemb\u0103tr\u00e2nire la UC San Francisco, a men\u021bionat: \u201eAm fost surprin\u0219i s\u0103 descoperim c\u0103 \u00eemb\u0103tr\u00e2nirea reactiveaz\u0103 cromozomul X inactiv \u00een hipocamp, regiunea creierului responsabil\u0103 pentru \u00eenv\u0103\u021bare \u0219i memorie\u201d. Aceasta subliniaz\u0103 c\u0103 femeile nu doar tr\u0103iesc mai mult dec\u00e2t b\u0103rba\u021bii, ci \u0219i experimenteaz\u0103 un declin cognitiv mai lent: \u201eCeasul biologic al creierului feminin pare s\u0103 tic\u0103ie mai \u00eencet dec\u00e2t cel al b\u0103rba\u021bilor\u201d.<\/p>\n

Cele mai frumoase ur\u0103ri de 8 Martie. Mesaje pentru iubit\u0103 \u0219i mam\u0103, de Ziua Femeii<\/a><\/p>\n

Cercet\u0103torii consider\u0103 c\u0103 reactivarea cromozomului X ar putea oferi explica\u021bii pentru varia\u021biile de gen \u00een ceea ce prive\u0219te diverse boli degenerative \u0219i afec\u021biuni cronice. O descoperire important\u0103 a studiului eviden\u021biaz\u0103 faptul c\u0103 aceast\u0103 reactivare stimuleaz\u0103 sinteza unei proteine denumite Plp1, care contribuie la protejarea neuronilor. Aceast\u0103 protein\u0103 are un rol esen\u021bial \u00een procesele de \u00eenv\u0103\u021bare \u0219i memorie.<\/p>\n

Experimentele realizate pe \u0219oareci au demonstrat c\u0103 administrarea suplimentar\u0103 a acestei proteine \u00een creier a dus la \u00eembun\u0103t\u0103\u021biri semnificative ale capacit\u0103\u021bii cognitive, inclusiv \u00een r\u00e2ndul masculilor.<\/p>\n

\u201eEste un exemplu clar \u00een care \u00een\u021belegerea biologiei specifice femeilor poate duce la noi tratamente pentru creierul feminin, dar \u0219i pentru cel masculin\u201d, a explicat prof. Dubal.<\/p>\n

Studiul a fost publicat \u00eentr-un num\u0103r special al revistei Science Advances, consacrat s\u0103n\u0103t\u0103\u021bii femeilor. Autorii cercet\u0103rii au subliniat faptul c\u0103 medicina a ignorat adesea influen\u021ba diferen\u021belor de gen asupra bolilor. De exemplu, femeile sunt mai predispose la boala Alzheimer, \u00een vreme ce boala Parkinson este mai frecvent\u0103 la b\u0103rba\u021bi. Totu\u0219i, cuno\u0219tin\u021bele noastre despre modul \u00een care biologia sexual\u0103 influen\u021beaz\u0103 aceste diferen\u021be sunt foarte limitate.<\/p>\n

Rom\u00e2ncele care au scris istorie! Cele mai \u00eensemnate personalit\u0103\u021bi feminine care \u0219i-au l\u0103sat amprenta \u00een domenii marcante. Au schimbat lumea prin meritele lor<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Femeile au o speran\u021b\u0103 de via\u021b\u0103 medie cu cinci ani mai mare dec\u00e2t cea a…<\/p>\n","protected":false},"author":0,"featured_media":37557,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[],"class_list":["post-37571","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actual"],"_links":{"self":[{"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/posts\/37571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/comments?post=37571"}],"version-history":[{"count":0,"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/posts\/37571\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/media\/37557"}],"wp:attachment":[{"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/media?parent=37571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/categories?post=37571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/247stiri.ro\/index.php\/wp-json\/wp\/v2\/tags?post=37571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}