C\u00f3 m\u1ed9t b\u00ed \u1ea9n trong r\u01b0\u1ee3u vang m\u00e0 x\u01b0a nay ng\u01b0\u1eddi ta kh\u00f4ng bi\u1ebft nguy\u00ean nh\u00e2n. \u0110\u00f3 l\u00e0 \u1edf m\u1ed9t s\u1ed1 ng\u01b0\u1eddi (c\u0169ng nhi\u1ec1u l\u1eafm) nhanh ch\u00f3ng b\u1ecb \u0111au \u0111\u1ea7u khi u\u1ed1ng r\u01b0\u1ee3u vang \u0111\u1ecf. \u0110i\u1ec1u k\u1ef3 l\u1ea1 \u1edf ch\u1ed7, h\u1ecd l\u00e0 nh\u1eefng tay \u201cb\u1ee3m nh\u1eadu\u201d, ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u00e2n \u201ca-ma-t\u01a1\u201d v\u1ec1 r\u01b0\u1ee3u. U\u1ed1ng r\u01b0\u1ee3u vang tr\u1eafng, hay r\u01b0\u1ee3u m\u1ea1nh v\u1eabn b\u00ecnh th\u01b0\u1eddng, nh\u01b0ng ch\u1ec9 nh\u1ea5p ch\u00fat r\u01b0\u1ee3u vang \u0111\u1ecf l\u00e0 b\u1ecb \u0111au \u0111\u1ea7u. L\u1ea1 kh\u00f4ng?<\/p>\n
M\u1ed9t nghi\u00ean c\u1ee9u m\u1edbi cu\u1ed1i c\u00f9ng c\u00f3 th\u1ec3 gi\u00fap gi\u1ea3i quy\u1ebft m\u1ed9t b\u00ed \u1ea9n li\u00ean quan \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 n\u00e0y. C\u00e1c nh\u00e0 khoa h\u1ecdc t\u1ea1i \u0110\u1ea1i h\u1ecdc California Davis tin r\u1eb1ng h\u1ecd \u0111\u00e3 t\u00ecm ra l\u00fd do: \u0110\u00f3 l\u00e0 trong r\u01b0\u1ee3u vang \u0111\u1ecf c\u00f3 qu\u00e1 nhi\u1ec1u m\u1ed9t lo\u1ea1i flavonoid \u0111\u1eb7c bi\u1ec7t kh\u00f3 h\u00f2a h\u1ee3p v\u1edbi r\u01b0\u1ee3u.<\/p>\n
Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ti\u1ebfn h\u00e0nh m\u1ed9t th\u1eed nghi\u1ec7m l\u00e2m s\u00e0ng nh\u1ecf \u0111\u1ec3 ki\u1ec3m tra th\u00eam l\u00fd thuy\u1ebft c\u1ee7a h\u1ecd.<\/p>\n
\u0110au \u0111\u1ea7u do r\u01b0\u1ee3u vang \u0111\u1ecf d\u01b0\u1eddng nh\u01b0 l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ri\u00eang bi\u1ec7t c\u1ee7a ch\u00fang \u2013 m\u1ed9t hi\u1ec7n t\u01b0\u1ee3ng kh\u00f3 c\u00f3 th\u1ec3 gi\u1ea3i th\u00edch d\u1ec5 d\u00e0ng. M\u1ed9t s\u1ed1 chuy\u00ean gia \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng c\u00f3 th\u1ec3 l\u00e0 do d\u01b0 th\u1eeba histamine trong v\u1ecf nho d\u00f9ng \u0111\u1ec3 l\u00e0m r\u01b0\u1ee3u vang \u0111\u1ecf. M\u1ed9t s\u1ed1 chuy\u00ean gia kh\u00e1c l\u1ea1i suy \u0111o\u00e1n r\u1eb1ng l\u01b0\u1ee3ng tannin d\u1ed3i d\u00e0o ho\u1eb7c m\u1ed9t lo\u1ea1i ch\u1ea5t b\u1ea3o qu\u1ea3n g\u1ecdi l\u00e0 sulfites trong r\u01b0\u1ee3u vang \u0111\u1ecf l\u00e0 nguy\u00ean nh\u00e2n.<\/p>\n
D\u01b0\u1eddng nh\u01b0 nh\u1eefng nh\u1eadn \u0111\u1ecbnh tr\u00ean \u0111\u1ec1u kh\u00f4ng \u0111\u00fang, v\u00e0 nh\u00f3m t\u00e1c gi\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a \u0110\u1ea1i h\u1ecdc California Davis, \u0111\u00e3 t\u00ecm ra m\u1ed9t th\u1ee7 ph\u1ea1m kh\u00e1c. \u0110\u00f3 l\u00e0 do ch\u1ea5t flavonoid quercetin.<\/p>\n
Nghi\u00ean c\u1ee9u n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 tr\u00ean t\u1ea1p ch\u00ed Scientific Reports.<\/p>\n
Minh h\u1ecda: Sergey Raikin\/Unsplash<\/p>\n
Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng flavonoid c\u0169ng c\u00f3 th\u1ec3 g\u00e2y \u0111au \u0111\u1ea7u khi u\u1ed1ng r\u01b0\u1ee3u vang \u0111\u1ecf, d\u1ef1a tr\u00ean m\u1ed9t v\u1ea5n \u0111\u1ec1 sinh h\u1ecdc kh\u00e1c li\u00ean quan \u0111\u1ebfn r\u01b0\u1ee3u.<\/p>\n
Flavonoid l\u00e0 ch\u1ea5t dinh d\u01b0\u1ee1ng \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong nhi\u1ec1u lo\u1ea1i th\u1ef1c ph\u1ea9m c\u00f3 ngu\u1ed3n g\u1ed1c th\u1ef1c v\u1eadt, bao g\u1ed3m chocolate v\u00e0 nho. Ch\u00fang c\u00f3 th\u1ec3 c\u00f3 nh\u1eefng l\u1ee3i \u00edch ti\u1ec1m n\u0103ng cho s\u1ee9c kh\u1ecfe, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u1eb7c t\u00ednh ch\u1ed1ng oxy h\u00f3a v\u00e0 kh\u00e1ng khu\u1ea9n, \u0111\u1ed3ng th\u1eddi ch\u00fang gi\u00fap t\u1ea1o n\u00ean m\u00e0u s\u1eafc c\u1ee7a r\u01b0\u1ee3u vang \u0111\u1ecf.<\/p>\n
M\u1ed9t s\u1ed1 ng\u01b0\u1eddi, \u0111\u1eb7c bi\u1ec7t l\u00e0 nh\u1eefng ng\u01b0\u1eddi g\u1ed1c \u00c1, c\u00f3 xu h\u01b0\u1edbng b\u1ecb \u0111\u1ecf da v\u00e0 c\u00e1c tri\u1ec7u ch\u1ee9ng kh\u00e1c ch\u1ec9 sau khi u\u1ed1ng m\u1ed9t ch\u00fat r\u01b0\u1ee3u. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng x\u1ea3y ra do c\u00f3 m\u1ed9t bi\u1ebfn th\u1ec3 c\u1ee7a m\u1ed9t s\u1ed1 gen gi\u00fap ch\u00fang ta chuy\u1ec3n h\u00f3a r\u01b0\u1ee3u. M\u1ed9t trong nh\u1eefng gen n\u00e0y ch\u1ecbu tr\u00e1ch nhi\u1ec7m s\u1ea3n xu\u1ea5t enzyme ALDH2, c\u00f3 t\u00e1c d\u1ee5ng ph\u00e2n h\u1ee7y acetaldehyde, m\u1ed9t s\u1ea3n ph\u1ea9m ph\u1ee5 \u0111\u1ed9c h\u1ea1i c\u1ee7a r\u01b0\u1ee3u.<\/p>\n
N\u1ebfu kh\u00f4ng c\u00f3 enzyme n\u00e0y, acetaldehyde s\u1ebd t\u00edch t\u1ee5 trong c\u01a1 th\u1ec3 v\u00e0 khi\u1ebfn con ng\u01b0\u1eddi m\u1ec7t m\u1ecfi.<\/p>\n
Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u01b0a ra gi\u1ea3 thuy\u1ebft r\u1eb1ng flavonoid c\u00f3 th\u1ec3 g\u00e2y ra v\u1ea5n \u0111\u1ec1 t\u01b0\u01a1ng t\u1ef1 v\u1edbi ALDH2 v\u00e0 acetaldehyde. Trong ph\u00f2ng th\u00ed nghi\u1ec7m, h\u1ecd ph\u00e1t hi\u1ec7n ra r\u1eb1ng s\u1ea3n ph\u1ea9m ph\u1ee5 c\u1ee7a flavonoid th\u1ef1c s\u1ef1 c\u00f3 th\u1ec3 \u1ee9c ch\u1ebf vi\u1ec7c s\u1ea3n xu\u1ea5t ALDH2. D\u1ef1a tr\u00ean l\u01b0\u1ee3ng flavonoid \u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong m\u1ed9t lo\u1ea1i r\u01b0\u1ee3u vang \u0111\u1ecf th\u00f4ng th\u01b0\u1eddng v\u00e0 c\u00e1ch n\u00f3 ph\u00e2n h\u1ee7y trong m\u00e1u c\u1ee7a ch\u00fang ta, nh\u00f3m nghi\u00ean c\u1ee9u \u01b0\u1edbc t\u00ednh r\u1eb1ng m\u1ed9t ly ti\u00eau chu\u1ea9n ph\u1ea3i ch\u1ee9a \u0111\u1ee7 flavonoid \u0111\u1ec3 \u1ee9c ch\u1ebf s\u1ea3n xu\u1ea5t ALDH2 kho\u1ea3ng 37%.<\/p>\n
\u201cCh\u00fang t\u00f4i cho r\u1eb1ng khi nh\u1eefng ng\u01b0\u1eddi nh\u1ea1y c\u1ea3m ti\u00eau th\u1ee5 r\u01b0\u1ee3u vang v\u1edbi l\u01b0\u1ee3ng flavonoid th\u1eadm ch\u00ed c\u00f2n khi\u00eam t\u1ed1n, h\u1ecd s\u1ebd b\u1ecb \u0111au \u0111\u1ea7u, \u0111\u1eb7c bi\u1ec7t n\u1ebfu h\u1ecd b\u1ecb ch\u1ee9ng \u0111au n\u1eeda \u0111\u1ea7u t\u1eeb tr\u01b0\u1edbc ho\u1eb7c m\u1ed9t t\u00ecnh tr\u1ea1ng \u0111au \u0111\u1ea7u nguy\u00ean ph\u00e1t kh\u00e1c\u201d, \u0111\u1ed3ng t\u00e1c gi\u1ea3 Morris Levin, gi\u00e1o s\u01b0 th\u1ea7n kinh h\u1ecdc n\u00f3i.<\/p>\n
Minh h\u1ecda: Eason F\/Unsplash<\/p>\n
Nh\u1eefng ph\u00e1t hi\u1ec7n n\u00e0y ch\u01b0a ph\u1ea3i l\u00e0 b\u1eb1ng ch\u1ee9ng ch\u1eafc ch\u1eafn cho th\u1ea5y flavonoid g\u00e2y \u0111au \u0111\u1ea7u do r\u01b0\u1ee3u vang \u0111\u1ecf. V\u00e0 c\u00f3 v\u1ebb nh\u01b0 \u0111\u00e2y kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ea3nh gh\u00e9p quan tr\u1ecdng duy nh\u1ea5t c\u1ee7a c\u00e2u \u0111\u1ed1, nh\u00f3m nghi\u00ean c\u1ee9u l\u01b0u \u00fd. M\u1ed9t s\u1ed1 ng\u01b0\u1eddi c\u00f3 th\u1ec3 d\u1ec5 m\u1eafc ph\u1ea3i t\u00ecnh tr\u1ea1ng n\u00e0y h\u01a1n, c\u00f3 th\u1ec3 do c\u00e1ch h\u1ecd ph\u1ea3n \u1ee9ng v\u1edbi acetaldehyde ho\u1eb7c ph\u00e2n h\u1ee7y flavonoid. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u0169ng ch\u1ec9 ra r\u1eb1ng m\u1ed9t s\u1ed1 lo\u1ea1i r\u01b0\u1ee3u vang \u0111\u1ecf ch\u1ee9a nhi\u1ec1u flavonoid h\u01a1n nh\u1eefng lo\u1ea1i kh\u00e1c, do s\u1ef1 kh\u00e1c bi\u1ec7t trong quy tr\u00ecnh s\u1ea3n xu\u1ea5t r\u01b0\u1ee3u vang, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng nho ph\u01a1i n\u1eafng nhi\u1ec1u h\u01a1n.<\/p>\n
Theo \u00f4ng Levin th\u00ec nh\u00f3m nghi\u00ean c\u1ee9u c\u1ee7a \u00f4ng \u0111ang \u0111i \u0111\u00fang h\u01b0\u1edbng trong vi\u1ec7c gi\u1ea3i th\u00edch b\u00ed \u1ea9n h\u00e0ng thi\u00ean ni\u00ean k\u1ef7 n\u00e0y. B\u01b0\u1edbc ti\u1ebfp theo l\u00e0 th\u1eed nghi\u1ec7m n\u00f3 m\u1ed9t c\u00e1ch khoa h\u1ecdc tr\u00ean nh\u1eefng ng\u01b0\u1eddi m\u1eafc ch\u1ee9ng \u0111au \u0111\u1ea7u n\u00e0y v\u00ec r\u01b0\u1ee3u vang \u0111\u1ecf.<\/p>\n
Tuy nhi\u00ean, \u0111i\u1ec1u quan tr\u1ecdng nh\u1ea5t nh\u1eefng ng\u01b0\u1eddi b\u1ecb nh\u1ee9c \u0111\u1ea7u khi u\u1ed1ng r\u01b0\u1ee3u vang \u0111\u1ecf quan t\u00e2m l\u00e0 l\u00e0m sao \u0111\u1ec3 h\u1ecd kh\u00f4ng c\u00f2n b\u1ecb nh\u1ee9c \u0111\u1ea7u n\u1eefa, th\u00ec ch\u1eb3ng ai nghi\u00ean c\u1ee9u c\u1ea3.<\/p>\n
The post T\u1ea1i sao u\u1ed1ng r\u01b0\u1ee3u vang \u0111\u1ecf l\u1ea1i b\u1ecb \u0111au \u0111\u1ea7u?<\/a> appeared first on Saigon Nh\u1ecf<\/a>.<\/p>\n \u00a0<\/p>","protected":false},"excerpt":{"rendered":" C\u00f3 m\u1ed9t b\u00ed \u1ea9n trong r\u01b0\u1ee3u vang m\u00e0 x\u01b0a nay ng\u01b0\u1eddi ta kh\u00f4ng bi\u1ebft nguy\u00ean nh\u00e2n. \u0110\u00f3 l\u00e0 \u1edf m\u1ed9t s\u1ed1 ng\u01b0\u1eddi (c\u0169ng nhi\u1ec1u l\u1eafm) nhanh ch\u00f3ng b\u1ecb \u0111au \u0111\u1ea7u khi u\u1ed1ng r\u01b0\u1ee3u vang \u0111\u1ecf. \u0110i\u1ec1u k\u1ef3 l\u1ea1 \u1edf ch\u1ed7, h\u1ecd l\u00e0 nh\u1eefng tay \u201cb\u1ee3m nh\u1eadu\u201d, ch\u1ee9 kh\u00f4ng ph\u1ea3i d\u00e2n \u201ca-ma-t\u01a1\u201d v\u1ec1 r\u01b0\u1ee3u. U\u1ed1ng r\u01b0\u1ee3u …<\/p>","protected":false},"author":0,"featured_media":41159,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[82,239],"tags":[],"class_list":["post-41158","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-society","category-vietnam"],"_links":{"self":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/posts\/41158","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=41158"}],"version-history":[{"count":0,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/posts\/41158\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/media\/41159"}],"wp:attachment":[{"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/media?parent=41158"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/categories?post=41158"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vietvalley.com\/en\/wp-json\/wp\/v2\/tags?post=41158"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}