ch\u1ed1ng n\u1eafng t\u1eeb b\u00ean trong<\/a>, h\u1ea1n ch\u1ebf c\u00e1c t\u00e1c h\u1ea1i nguy hi\u1ec3m l\u00ean l\u00e0n da v\u00e0 s\u1ee9c kh\u1ecfe.<\/p>\n\n\n\n“Trong th\u1eddi \u0111i\u1ec3m n\u1eafng n\u00f3ng, tia UV cao, m\u1ecdi ng\u01b0\u1eddi c\u1ea7n u\u1ed1ng nhi\u1ec1u n\u01b0\u1edbc, dinh d\u01b0\u1ee1ng c\u00e2n \u0111\u1ed1i v\u00e0 c\u00f3 gi\u1ea3i ph\u00e1p b\u1ea3o v\u1ec7 l\u00e0n da, \u0111\u1eb7c bi\u1ec7t l\u00e0 b\u1ea3o v\u1ec7 c\u1ea5u tr\u00fac n\u1ec1n \u0111\u1ec3 ch\u1ed1ng n\u1eafng cho da t\u1eeb b\u00ean trong”, b\u00e1c s\u0129 B\u1ea1ch S\u01b0\u01a1ng nh\u1ea5n m\u1ea1nh.<\/p>\n\n\n\n
T\u1ea1i Trung M\u1ef9, c\u00e1c nh\u00e0 khoa h\u1ecdc t\u00ecm \u0111\u01b0\u1ee3c m\u1ed9t lo\u1ea1i th\u1ea3o d\u01b0\u1ee3c qu\u00fd mang t\u00ean Polypodium Leucotomos (P. Leucotomos). Lo\u1ea1i c\u00e2y n\u00e0y \u0111\u00e3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ed1ng n\u1eafng h\u00e0ng ngh\u00ecn n\u0103m tr\u01b0\u1edbc. V\u01b0\u01a1ng tri\u1ec1u Inca v\u00e0 Aztec c\u1ed5 \u0111\u1ea1i th\u01b0\u1eddng d\u00f9ng l\u00e1 c\u00e2y P. Leucotomos \u0111\u1ec3 \u0111\u1eafp l\u00ean da nh\u1eb1m l\u00e0m d\u1ecbu v\u1ebft ch\u00e1y n\u1eafng, th\u1eadm ch\u00ed d\u00f9ng P. Leucotomos \u0111\u1ec3 \u0103n nh\u01b0 rau v\u00e0 u\u1ed1ng nh\u01b0 m\u1ed9t lo\u1ea1i tr\u00e0. Theo s\u1ed1 li\u1ec7u c\u1ee7a Trung T\u00e2m Nghi\u00ean C\u1ee9u Qu\u1ed1c T\u1ebf v\u1ec1 Ung Th\u01b0, \u1edf khu v\u1ef1c Trung v\u00e0 Nam M\u1ef9 \u0111\u1ea7y n\u1eafng n\u00f3ng, c\u00e1c qu\u1ed1c gia c\u00f3 truy\u1ec1n th\u1ed1ng s\u1eed d\u1ee5ng P. Leucotomos nh\u01b0 Honduras, Nicaragua c\u00f3 t\u1ef7 l\u1ec7 ung th\u01b0 da th\u1ea5p.<\/p>\n\n\n\n
Nhi\u1ec1u nghi\u00ean c\u1ee9u khoa h\u1ecdc ch\u1ee9ng minh P.Leucotomos c\u00f3 kh\u1ea3 n\u0103ng ph\u00f2ng v\u1ec7 k\u00e9p, gi\u00fap t\u00e1i t\u1ea1o v\u00e0 b\u1ea3o v\u1ec7 l\u00e0n da tr\u01b0\u1edbc tia UV, l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a. Khi da b\u1ecb tia UV t\u1ea5n c\u00f4ng, tinh ch\u1ea5t n\u00e0y s\u1ebd ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t l\u00e1 ch\u1eafn, gi\u00fap b\u1ea3o v\u1ec7 c\u1ea5u tr\u00fac n\u1ec1n c\u1ee7a da b\u1eb1ng c\u00e1ch gi\u1ea3m t\u00e1c \u0111\u1ed9ng c\u1ee7a men ti\u00eau h\u1ee7y c\u1ea5u tr\u00fac n\u1ec1n MMPs, h\u1ea1n ch\u1ebf ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1ebf b\u00e0o h\u1eafc t\u1ed1 g\u00e2y s\u1ea1m da, \u0111\u1ed3ng th\u1eddi k\u00edch th\u00edch s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c protein d\u1ea1ng s\u1ee3i (bao g\u1ed3m: collagen, elastin, laminin, fibronectin) v\u00e0 t\u0103ng c\u01b0\u1eddng s\u1ea3n xu\u1ea5t proteoglycan l\u00e0 nh\u1eefng ph\u00e2n t\u1eed gi\u1eef n\u01b0\u1edbc quan tr\u1ecdng t\u1ea1o n\u00ean s\u1ef1 s\u0103n ch\u1eafc, t\u00ednh \u0111\u00e0n h\u1ed3i v\u00e0 \u0111\u1ed9 \u1ea9m c\u1ee7a da.<\/p>\n\n\n\n
Nghi\u00ean c\u1ee9u c\u1ee7a \u0110\u1ea1i h\u1ecdc Harvard (M\u1ef9) cho th\u1ea5y, 48 gi\u1edd sau khi s\u1eed d\u1ee5ng c\u00e1c ch\u1ebf ph\u1ea9m \u0111\u01b0\u1ee3c chi\u1ebft xu\u1ea5t t\u1ed1i \u01b0u t\u1eeb P. Leucotomos, c\u01a1 th\u1ec3 s\u1ebd b\u1eaft \u0111\u1ea7u t\u00e1i t\u1ea1o v\u00e0 s\u1eeda ch\u1eefa nh\u1eefng t\u1ebf b\u00e0o da b\u1ecb t\u1ed5n th\u01b0\u01a1ng. \u0110\u1ed3ng th\u1eddi, kh\u1ea3 n\u0103ng ch\u1ed1ng tia UVA c\u1ee7a da t\u0103ng g\u1ea5p 3 l\u1ea7n v\u00e0 g\u1ea5p 10 l\u1ea7n v\u1edbi tia UVB.<\/p>\n\n\n\n
B\u00e1c s\u0129 B\u1ea1ch S\u01b0\u01a1ng chia s\u1ebb, hi\u1ec7n nay, v\u1edbi c\u00f4ng ngh\u1ec7 chi\u1ebft xu\u1ea5t hi\u1ec7n \u0111\u1ea1i, tinh ch\u1ea5t P. Leucotomos \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c y khoa, \u0111\u1eb7c bi\u1ec7t l\u00e0 ch\u0103m s\u00f3c da. Ngo\u00e0i ra, khi \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c lo\u1ea1i th\u1ea3o d\u01b0\u1ee3c nh\u01b0 Lepidium Meyenii, b\u1ed9 \u0111\u00f4i n\u00e0y c\u00f2n n\u1eafm vai tr\u00f2 quan tr\u1ecdng gi\u00fap t\u0103ng c\u01b0\u1eddng s\u1ee9c kh\u1ecfe n\u1ec1n t\u1ea3ng v\u00e0 sinh l\u00fd cho ph\u00e1i \u0111\u1eb9p, gi\u1eef g\u00ecn thanh xu\u00e2n v\u00e0 l\u00e0m ch\u1eadm qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a.<\/p>\n\n\n\n
D\u1ef1a Theo VNExpress<\/p>\n","protected":false},"excerpt":{"rendered":"
T\u00e1c h\u1ea1i c\u1ee7a tia UV \u0111\u1ed1i v\u1edbi l\u00e0n da? N\u1eafng n\u00f3ng cao \u0111i\u1ec3m kh\u1eafp c\u1ea3 n\u01b0\u1edbc v\u00e0 ch\u1ec9 s\u1ed1 tia UV v\u01b0\u1ee3t ng\u01b0\u1ee1ng an to\u00e0n d\u1ec5 g\u00e2y s\u1ed1c nhi\u1ec7t, t\u1ed5n…<\/p>\n","protected":false},"author":1,"featured_media":394,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[175,148,143,144],"yoast_head":"\n
T\u00e1c h\u1ea1i c\u1ee7a tia UV \u0111\u1ed1i v\u1edbi l\u00e0n da? - C\u00f4ng ty CP D\u01b0\u1ee3c Ph\u1ea9m V\u1ea1n Ph\u01b0\u1edbc<\/title>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\t\n\t\n\n\n\n\n\t\n\t\n\t\n