Khoa h\u1ecdc v\u1eeba ph\u00e1t hi\u1ec7n l\u00e0 trong khoang mi\u1ec7ng c\u00f3 th\u1ec3 ch\u1ee9a c\u1ea3 hai lo\u1ea1i vi khu\u1ea9n: c\u00f3 h\u1ea1i v\u00e0 c\u00f3 l\u1ee3i li\u00ean quan \u0111\u1ebfn n\u00e3o b\u1ed9 v\u00e0 tr\u00ed nh\u1edb c\u1ee7a con ng\u01b0\u1eddi.<\/p>\n
Ch\u00fang ta \u0111\u1ec1u bi\u1ebft l\u00e0 vi khu\u1ea9n th\u01b0\u1eddng c\u00f3 h\u1ea1i, nh\u01b0ng c\u0169ng c\u00f3 nh\u1eefng vi khu\u1ea9n c\u00f3 l\u1ee3i cho c\u01a1 th\u1ec3. Nghi\u00ean c\u1ee9u do \u0111\u1ea1i h\u1ecdc University of Exeter th\u1ef1c hi\u1ec7n v\u1eeba ph\u00e1t hi\u1ec7n m\u1ed9t s\u1ed1 lo\u1ea1i vi khu\u1ea9n c\u00f3 th\u1ec3 l\u00e0m t\u0103ng tr\u00ed nh\u1edb v\u00e0 t\u0103ng s\u1ef1 ch\u00fa \u00fd t\u1ed1t h\u01a1n, trong khi c\u00f3 nh\u1eefng lo\u1ea1i kh\u00e1c l\u1ea1i li\u00ean quan \u0111\u1ebfn nguy c\u01a1 m\u1eafc b\u1ec7nh Alzheimer cao h\u01a1n.<\/p>\n
\u0110\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean PNAS Nexus, nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 tuy\u1ec3n 110 ng\u01b0\u1eddi tham gia, tr\u00ean 50 tu\u1ed5i, t\u1eeb m\u1ed9t nghi\u00ean c\u1ee9u tr\u1ef1c tuy\u1ebfn c\u00f3 t\u00ean PROTECT, theo d\u00f5i s\u1ee9c kh\u1ecfe n\u00e3o b\u1ed9 c\u1ee7a h\u01a1n 25,000 ng\u01b0\u1eddi trung ni\u00ean \u1edf Anh. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u chia nh\u1eefng ng\u01b0\u1eddi tham gia th\u00e0nh hai nh\u00f3m: nh\u00f3m kh\u00f4ng b\u1ecb suy gi\u1ea3m ch\u1ee9c n\u0103ng n\u00e3o v\u00e0 nh\u00f3m b\u1ecb suy gi\u1ea3m nh\u1eadn th\u1ee9c nh\u1eb9. Nh\u1eefng ng\u01b0\u1eddi tham gia trong hai nh\u00f3m n\u00e0y \u0111\u01b0\u1ee3c g\u1eedi m\u1eabu n\u01b0\u1edbc s\u00fac mi\u1ec7ng \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 nghi\u00ean c\u1ee9u qu\u1ea7n th\u1ec3 vi khu\u1ea9n.<\/p>\n
T\u00e1c gi\u1ea3 ch\u00ednh Ti\u1ebfn S\u0129 Joanna L\u2019Heureux, thu\u1ed9c Tr\u01b0\u1eddng Y, \u0111\u1ea1i h\u1ecdc University of Exeter cho bi\u1ebft nh\u1eefng ph\u00e1t hi\u1ec7n c\u1ee7a h\u1ecd cho th\u1ea5y m\u1ed9t s\u1ed1 vi khu\u1ea9n c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i cho s\u1ee9c kh\u1ecfe n\u00e3o b\u1ed9 khi con ng\u01b0\u1eddi gi\u00e0 \u0111i. \u0110i\u1ec1u n\u00e0y g\u1ee3i ra m\u1ed9t \u00fd t\u01b0\u1edfng th\u00fa v\u1ecb v\u1ec1 vi\u1ec7c th\u1ef1c hi\u1ec7n c\u00e1c x\u00e9t nghi\u1ec7m th\u01b0\u1eddng quy nh\u01b0 m\u1ed9t ph\u1ea7n c\u1ee7a c\u00e1c cu\u1ed9c ki\u1ec3m tra r\u0103ng mi\u1ec7ng \u0111\u1ec3 \u0111o m\u1ee9c \u0111\u1ed9 vi khu\u1ea9n v\u00e0 ph\u00e1t hi\u1ec7n nh\u1eefng d\u1ea5u hi\u1ec7u r\u1ea5t s\u1edbm c\u1ee7a t\u00ecnh tr\u1ea1ng suy gi\u1ea3m s\u1ee9c kh\u1ecfe n\u00e3o b\u1ed9 c\u1ee7a m\u1ed9t ng\u01b0\u1eddi sau n\u00e0y.<\/p>\n
\u0110\u1ed3ng t\u00e1c gi\u1ea3 Gi\u00e1o s\u01b0 Anne Corbett, c\u0169ng thu\u1ed9c thu\u1ed9c Tr\u01b0\u1eddng Y, \u0111\u1ea1i h\u1ecdc University of Exeter cho bi\u1ebft nghi\u00ean c\u1ee9u c\u00f3 \u00fd ngh\u0129a s\u00e2u s\u1eafc. N\u1ebfu m\u1ed9t s\u1ed1 vi khu\u1ea9n h\u1ed7 tr\u1ee3 ch\u1ee9c n\u0103ng n\u00e3o trong khi nh\u1eefng vi khu\u1ea9n kh\u00e1c g\u00f3p ph\u1ea7n g\u00e2y suy gi\u1ea3m, th\u00ec c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tr\u1ecb l\u00e0m thay \u0111\u1ed5i s\u1ef1 c\u00e2n b\u1eb1ng c\u1ee7a vi khu\u1ea9n trong mi\u1ec7ng c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a gi\u1ea3i ph\u00e1p ng\u0103n ng\u1eeba ch\u1ee9ng m\u1ea5t tr\u00ed, th\u00f4ng qua thay \u0111\u1ed5i c\u00e1ch \u0103n u\u1ed1ng, men vi sinh, th\u00f3i quen v\u1ec7 sinh r\u0103ng mi\u1ec7ng ho\u1eb7c th\u1eadm ch\u00ed l\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u tr\u1ecb c\u00f3 m\u1ee5c ti\u00eau.<\/p>\n
Nh\u1eefng ng\u01b0\u1eddi c\u00f3 nhi\u1ec1u nh\u00f3m vi khu\u1ea9n Neisseria v\u00e0 Haemophilus c\u00f3 tr\u00ed nh\u1edb, s\u1ef1 ch\u00fa \u00fd v\u00e0 kh\u1ea3 n\u0103ng th\u1ef1c hi\u1ec7n c\u00e1c nhi\u1ec7m v\u1ee5 ph\u1ee9c t\u1ea1p t\u1ed1t h\u01a1n. Nh\u1eefng ng\u01b0\u1eddi n\u00e0y c\u0169ng c\u00f3 n\u1ed3ng \u0111\u1ed9 nitrit trong mi\u1ec7ng cao h\u01a1n.<\/p>\n
M\u1eb7t kh\u00e1c, m\u1ee9c \u0111\u1ed9 vi khu\u1ea9n Porphyromonas cao h\u01a1n th\u01b0\u1eddng g\u1eb7p \u1edf nh\u1eefng ng\u01b0\u1eddi b\u1ecb suy gi\u1ea3m tr\u00ed nh\u1edb. Trong khi \u0111\u00f3, nh\u00f3m vi khu\u1ea9n Prevotella c\u00f3 li\u00ean quan \u0111\u1ebfn h\u00e0m l\u01b0\u1ee3ng nitrit th\u1ea5p, m\u00e0 c\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ee9c kh\u1ecfe n\u00e3o b\u1ed9 k\u00e9m h\u01a1n v\u00e0 ph\u1ed5 bi\u1ebfn h\u01a1n \u1edf nh\u1eefng ng\u01b0\u1eddi mang gen nguy c\u01a1 m\u1eafc b\u1ec7nh Alzheimer, APOE4.<\/p>\n
Th\u01b0\u1eddng l\u00e0 vi khu\u1ea9n c\u00f3 h\u1ea1i x\u00e2m nh\u1eadp tr\u1ef1c ti\u1ebfp v\u00e0o m\u00e1u, c\u00f3 kh\u1ea3 n\u0103ng g\u00e2y t\u1ed5n th\u01b0\u01a1ng cho n\u00e3o. Ngo\u00e0i ra, s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng gi\u1eefa vi khu\u1ea9n c\u00f3 l\u1ee3i v\u00e0 c\u00f3 h\u1ea1i l\u00e0m gi\u1ea3m qu\u00e1 tr\u00ecnh chuy\u1ec3n \u0111\u1ed5i nitrat (c\u00f3 nhi\u1ec1u trong kh\u1ea9u ph\u1ea7n \u0103n nhi\u1ec1u rau) th\u00e0nh oxit nitric \u2013 m\u1ed9t ch\u1ea5t h\u00f3a h\u1ecdc quan tr\u1ecdng cho qu\u00e1 tr\u00ecnh giao ti\u1ebfp c\u1ee7a n\u00e3o v\u00e0 h\u00ecnh th\u00e0nh tr\u00ed nh\u1edb.<\/p>\n
Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u01b0\u1ee3c Wellcome h\u1ed7 tr\u1ee3 v\u00e0 m\u1ed9t ph\u1ea7n \u0111\u01b0\u1ee3c t\u00e0i tr\u1ee3 b\u1edfi Trung t\u00e2m nghi\u00ean c\u1ee9u y sinh Exeter thu\u1ed9c Vi\u1ec7n nghi\u00ean c\u1ee9u s\u1ee9c kh\u1ecfe v\u00e0 ch\u0103m s\u00f3c qu\u1ed1c gia (NIHR). mang l\u1ea1i kh\u1ea3 n\u0103ng th\u00fa v\u1ecb cho vi\u1ec7c x\u00e1c \u0111\u1ecbnh v\u00e0 can thi\u1ec7p s\u1edbm.<\/p>\n
Trong khi tr\u00ed nh\u1edb v\u00e0 ch\u1ee9c n\u0103ng n\u00e3o suy gi\u1ea3m l\u00e0 \u0111i\u1ec1u b\u00ecnh th\u01b0\u1eddng \u1edf tu\u1ed5i gi\u00e0, t\u00ecnh tr\u1ea1ng suy gi\u1ea3m kh\u1ea3 n\u0103ng tinh th\u1ea7n l\u1edbn h\u01a1n m\u1ee9c b\u00ecnh th\u01b0\u1eddng khi l\u00e3o h\u00f3a \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 suy gi\u1ea3m nh\u1eadn th\u1ee9c nh\u1eb9. Kho\u1ea3ng 15% ng\u01b0\u1eddi l\u1edbn tu\u1ed5i r\u01a1i v\u00e0o nh\u00f3m suy gi\u1ea3m nh\u1eadn th\u1ee9c nh\u1eb9, \u0111\u01b0\u1ee3c coi l\u00e0 y\u1ebfu t\u1ed1 nguy c\u01a1 l\u1edbn nh\u1ea5t d\u1eabn \u0111\u1ebfn ch\u1ee9ng m\u1ea5t tr\u00ed nh\u1edb ho\u1eb7c b\u1ec7nh Alzheimer.<\/p>\n
(theo Science Daily)<\/p>\n
The post Vi khu\u1ea9n trong khoang mi\u1ec7ng li\u00ean quan \u0111\u1ebfn n\u00e3o b\u1ed9<\/a> appeared first on Saigon Nh\u1ecf<\/a>.<\/p>\n \u00a0<\/p>","protected":false},"excerpt":{"rendered":" Khoa h\u1ecdc v\u1eeba ph\u00e1t hi\u1ec7n l\u00e0 trong khoang mi\u1ec7ng c\u00f3 th\u1ec3 ch\u1ee9a c\u1ea3 hai lo\u1ea1i vi khu\u1ea9n: c\u00f3 h\u1ea1i v\u00e0 c\u00f3 l\u1ee3i li\u00ean quan \u0111\u1ebfn n\u00e3o b\u1ed9 v\u00e0 tr\u00ed nh\u1edb c\u1ee7a con ng\u01b0\u1eddi. Ch\u00fang ta \u0111\u1ec1u bi\u1ebft l\u00e0 vi khu\u1ea9n th\u01b0\u1eddng c\u00f3 h\u1ea1i, nh\u01b0ng c\u0169ng c\u00f3 nh\u1eefng vi khu\u1ea9n c\u00f3 l\u1ee3i cho c\u01a1 th\u1ec3. Nghi\u00ean …<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[43],"tags":[],"class_list":["post-54660","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-health"],"_links":{"self":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/posts\/54660","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"}],"author":[{"embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/comments?post=54660"}],"version-history":[{"count":0,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/posts\/54660\/revisions"}],"wp:attachment":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/media?parent=54660"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/categories?post=54660"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/tags?post=54660"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}