M\u1ed9t quy lu\u1eadt sinh h\u1ecdc m\u1edbi \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t nh\u1eb1m cung c\u1ea5p nh\u1eefng th\u00f4ng tin quan tr\u1ecdng v\u1ec1 qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a v\u00e0 l\u00e3o h\u00f3a c\u1ee7a con ng\u01b0\u1eddi.<\/p>\n
Quy lu\u1eadt sinh h\u1ecdc l\u00e0 nh\u1eefng m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn \u0111\u00fang \u0111\u1ed1i v\u1edbi m\u1ed9t nh\u00f3m sinh v\u1eadt s\u1ed1ng. V\u00ed d\u1ee5, quy t\u1eafc Allen, do nh\u00e0 \u0111\u1ed9ng v\u1eadt h\u1ecdc Joel Allen \u0111\u01b0a ra v\u00e0o n\u0103m 1877, n\u00f3i r\u1eb1ng \u0111\u1ed9ng v\u1eadt m\u00e1u n\u00f3ng \u1edf v\u00f9ng kh\u00ed h\u1eadu l\u1ea1nh, c\u00f3 chi ng\u1eafn, m\u00f3ng d\u00e0y h\u01a1n so v\u1edbi \u0111\u1ed9ng v\u1eadt \u1edf v\u00f9ng n\u00f3ng, \u0111\u1ec3 gi\u1eef nhi\u1ec7t \u0111\u1ed9 c\u01a1 th\u1ec3.<\/p>\n
Trong m\u1ed9t b\u00e0i b\u00e1o \u0111\u0103ng tr\u00ean t\u1ea1p ch\u00ed Frontiers in Aging, nh\u00e0 sinh v\u1eadt h\u1ecdc John Tower, gi\u00e1o s\u01b0 t\u1ea1i University of South Carolina, \u0111\u1ec1 xu\u1ea5t m\u1ed9t \u0111\u1ecbnh lu\u1eadt sinh h\u1ecdc m\u1edbi th\u00e1ch th\u1ee9c nh\u1eefng gi\u1ea3 \u0111\u1ecbnh l\u00e2u nay v\u1ec1 t\u00ednh \u1ed5n \u0111\u1ecbnh trong c\u00e1c h\u1ec7 th\u1ed1ng sinh h\u1ecdc.<\/p>\n
Tower vi\u1ebft: \u201cC\u00e1c quy t\u1eafc sinh h\u1ecdc th\u01b0\u1eddng li\u00ean quan \u0111\u1ebfn vi\u1ec7c b\u1ea3o t\u1ed3n t\u00e0i nguy\u00ean. V\u00ed d\u1ee5 c\u00e1c m\u00f4 h\u00ecnh ph\u1ed5 bi\u1ebfn nh\u01b0 h\u00ecnh l\u1ee5c gi\u00e1c v\u00e0 h\u00ecnh xo\u1eafn \u1ed1c logarit y\u00eau c\u1ea7u v\u1eadt li\u1ec7u t\u1ed1i thi\u1ec3u v\u00e0 c\u00e1c \u0111\u1ecbnh lu\u1eadt t\u1ef7 l\u1ec7 li\u00ean quan \u0111\u1ebfn vi\u1ec7c b\u1ea3o to\u00e0n n\u0103ng l\u01b0\u1ee3ng. M\u1ed1i quan h\u1ec7 v\u1edbi ch\u1ee7 \u0111\u1ec1 ng\u01b0\u1ee3c l\u1ea1i \u0111\u01b0\u1ee3c th\u1ea3o lu\u1eadn, \u0111\u00f3 l\u00e0 s\u1ef1 kh\u00f4ng \u1ed5n \u0111\u1ecbnh c\u00f3 l\u1ee3i c\u00f3 ch\u1ecdn l\u1ecdc c\u1ee7a m\u1ed9t ho\u1eb7c nhi\u1ec1u th\u00e0nh ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng sao ch\u00e9p.\u201d<\/p>\n
N\u00f3i c\u00e1ch kh\u00e1c, \u0111\u1ecbnh lu\u1eadt Tower quy \u0111\u1ecbnh r\u1eb1ng s\u1ef1 b\u1ea5t \u1ed5n v\u00e0 bi\u1ebfn \u0111\u1ed9ng trong c\u00e1c th\u00e0nh ph\u1ea7n sinh h\u1ecdc, ch\u1eb3ng h\u1ea1n nh\u01b0 b\u1ed9 m\u00e1y t\u1ebf b\u00e0o c\u1ee7a ch\u00fang ta, c\u00f3 l\u1ee3i cho s\u1ef1 s\u1ed1ng c\u00f2n c\u1ee7a lo\u00e0i ng\u01b0\u1eddi.<\/p>\n
\u201cS\u1ef1 b\u1ea5t \u1ed5n c\u00f3 l\u1ee3i c\u00f3 ch\u1ecdn l\u1ecdc\u201d n\u00e0y cho ph\u00e9p lu\u00e2n chuy\u1ec3n nhanh ch\u00f3ng c\u00e1c th\u00e0nh ph\u1ea7n t\u1ebf b\u00e0o c\u0169 v\u00e0 h\u01b0 h\u1ecfng, ph\u00e1 v\u1ee1 c\u00e1c th\u00e0nh ph\u1ea7n t\u1ebf b\u00e0o n\u00e0y th\u00e0nh c\u00e1c kh\u1ed1i x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 t\u1ea1o ra c\u00e1c c\u1ea5u tr\u00fac m\u1edbi.<\/p>\n
Theo Tower: \u201cNgay c\u1ea3 nh\u1eefng t\u1ebf b\u00e0o \u0111\u01a1n gi\u1ea3n nh\u1ea5t c\u0169ng ch\u1ee9a c\u00e1c enzyme ph\u00e1 v\u1ee1 DNA, RNA v\u00e0 protein v\u00e0 th\u01b0\u1eddng xuy\u00ean ph\u00e2n h\u1ee7y, thay th\u1ebf c\u00e1c ph\u00e2n t\u1eed sinh h\u1ecdc quan tr\u1ecdng n\u00e0y, cho th\u1ea5y r\u1eb1ng s\u1ef1 b\u1ea5t \u1ed5n c\u00f3 l\u1ee3i c\u00f3 ch\u1ecdn l\u1ecdc l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho s\u1ef1 s\u1ed1ng.\u201d<\/p>\n
\u00d4ng n\u00f3i th\u00eam r\u1eb1ng qu\u00e1 tr\u00ecnh n\u00e0y \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a. Khi c\u00e1c t\u1ebf b\u00e0o s\u1ed1ng trong d\u00f2ng kh\u00f4ng \u1ed5n \u0111\u1ecbnh li\u00ean t\u1ee5c, c\u00e1c t\u1ebf b\u00e0o s\u1ed1ng n\u00e0y c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i \u1edf m\u1ed9t trong hai tr\u1ea1ng th\u00e1i: m\u1ed9t tr\u1ea1ng th\u00e1i c\u00f3 th\u00e0nh ph\u1ea7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh v\u00e0 m\u1ed9t tr\u1ea1ng th\u00e1i kh\u00f4ng c\u00f3 th\u00e0nh ph\u1ea7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh. Ch\u1ecdn l\u1ecdc t\u1ef1 nhi\u00ean c\u00f3 th\u1ec3 t\u00e1c \u0111\u1ed9ng kh\u00e1c nhau \u1edf hai tr\u1ea1ng th\u00e1i t\u1ebf b\u00e0o n\u00e0y.<\/p>\n
Tower vi\u1ebft: \u201c\u0110i\u1ec1u n\u00e0y h\u1ed7 tr\u1ee3 duy tr\u00ec c\u1ea3 gen b\u00ecnh th\u01b0\u1eddng v\u00e0 \u0111\u1ed9t bi\u1ebfn gen trong c\u00f9ng m\u1ed9t qu\u1ea7n th\u1ec3 t\u1ebf b\u00e0o, n\u1ebfu gen b\u00ecnh th\u01b0\u1eddng thu\u1eadn l\u1ee3i \u1edf tr\u1ea1ng th\u00e1i t\u1ebf b\u00e0o n\u00e0y v\u00e0 \u0111\u1ed9t bi\u1ebfn gen thu\u1eadn l\u1ee3i \u1edf tr\u1ea1ng th\u00e1i t\u1ebf b\u00e0o kh\u00e1c.\u201d<\/p>\n
\u00d4ng l\u1eadp lu\u1eadn r\u1eb1ng \u0111i\u1ec1u n\u00e0y t\u1ea1o ra s\u1ef1 \u0111a d\u1ea1ng di truy\u1ec1n v\u00e0 l\u00e0m cho t\u1ebf b\u00e0o v\u00e0 sinh v\u1eadt th\u00edch nghi h\u01a1n v\u1edbi nh\u1eefng thay \u0111\u1ed5i. Tuy nhi\u00ean, s\u1ef1 b\u1ea5t \u1ed5n c\u00f3 l\u1ee3i c\u00f3 ch\u1ecdn l\u1ecdc c\u0169ng g\u00e2y t\u1ed5n h\u1ea1i khi l\u00e3o h\u00f3a. Theo th\u1eddi gian, vi\u1ec7c x\u00e2y d\u1ef1ng v\u00e0 ph\u00e1 v\u1ee1 c\u00e1c th\u00e0nh ph\u1ea7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh n\u00e0y trong t\u1ebf b\u00e0o c\u1ee7a ch\u00fang ta s\u1ebd s\u1eed d\u1ee5ng h\u1ebft v\u1eadt li\u1ec7u v\u00e0 n\u0103ng l\u01b0\u1ee3ng, \u0111\u1ed3ng th\u1eddi g\u00e2y ra s\u1ef1 hao m\u00f2n cho b\u1ed9 m\u00e1y t\u1ebf b\u00e0o c\u1ee7a con ng\u01b0\u1eddi. S\u1ef1 t\u1ed3n t\u1ea1i c\u1ee7a c\u00e1c t\u1ebf b\u00e0o \u1edf hai tr\u1ea1ng th\u00e1i c\u0169ng cho ph\u00e9p c\u00e1c \u0111\u1ed9t bi\u1ebfn c\u00f3 h\u1ea1i xu\u1ea5t hi\u1ec7n v\u00e0 t\u1ed3n t\u1ea1i trong c\u01a1 th\u1ec3 ch\u00fang ta, \u0111i\u1ec1u m\u00e0 Tower cho bi\u1ebft r\u1eb1ng g\u00f3p ph\u1ea7n g\u00e2y ra l\u00e3o h\u00f3a.<\/p>\n
\u00d4ng vi\u1ebft: \u201cN\u00f3i t\u00f3m l\u1ea1i, s\u1ef1 m\u1ea5t \u1ed5n \u0111\u1ecbnh c\u00f3 l\u1ee3i c\u00f3 ch\u1ecdn l\u1ecdc s\u1ebd th\u00fac \u0111\u1ea9y \u0111a d\u1ea1ng di truy\u1ec1n c\u1ee7a c\u01a1 ch\u1ebf sao ch\u00e9p v\u00e0 kh\u1ea3 n\u0103ng sinh s\u1ea3n, \u0111\u1ed3ng th\u1eddi th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a do m\u1ea5t ngu\u1ed3n t\u00e0i nguy\u00ean v\u00e0 duy tr\u00ec c\u00e1c alen c\u00f3 h\u1ea1i.\u201d<\/p>\n
Tower hy v\u1ecdng r\u1eb1ng quy t\u1eafc m\u1edbi n\u00e0y, n\u1ebfu \u0111\u01b0\u1ee3c ch\u1ee9ng minh, s\u1ebd h\u1ed7 tr\u1ee3 vi\u1ec7c thi\u1ebft k\u1ebf c\u00e1c t\u1ebf b\u00e0o t\u1ed5ng h\u1ee3p trong t\u01b0\u01a1ng lai.<\/p>\n
(theo Newsweek)<\/p>\n
The post Quy lu\u1eadt sinh h\u1ecdc m\u1edbi gi\u1ea3i th\u00edch cho s\u1ef1 l\u00e3o h\u00f3a v\u00e0 ti\u1ebfn h\u00f3a<\/a> appeared first on Saigon Nh\u1ecf<\/a>.<\/p>\n \u00a0<\/p>","protected":false},"excerpt":{"rendered":" M\u1ed9t quy lu\u1eadt sinh h\u1ecdc m\u1edbi \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t nh\u1eb1m cung c\u1ea5p nh\u1eefng th\u00f4ng tin quan tr\u1ecdng v\u1ec1 qu\u00e1 tr\u00ecnh ti\u1ebfn h\u00f3a v\u00e0 l\u00e3o h\u00f3a c\u1ee7a con ng\u01b0\u1eddi. Quy lu\u1eadt sinh h\u1ecdc l\u00e0 nh\u1eefng m\u00f4 h\u00ecnh \u0111\u01b0\u1ee3c c\u00f4ng nh\u1eadn \u0111\u00fang \u0111\u1ed1i v\u1edbi m\u1ed9t nh\u00f3m sinh v\u1eadt s\u1ed1ng. V\u00ed d\u1ee5, quy t\u1eafc Allen, do nh\u00e0 …<\/p>","protected":false},"author":0,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[82,43],"tags":[],"class_list":["post-51241","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-society","category-health"],"_links":{"self":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/posts\/51241","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/comments?post=51241"}],"version-history":[{"count":0,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/posts\/51241\/revisions"}],"wp:attachment":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/media?parent=51241"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/categories?post=51241"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/tags?post=51241"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}