{"id":6286,"date":"2013-06-07T13:34:52","date_gmt":"2013-06-07T11:34:52","guid":{"rendered":"http:\/\/www.invarena.cz\/?p=6286"},"modified":"2013-06-07T13:34:52","modified_gmt":"2013-06-07T11:34:52","slug":"slunce-vic-prospiva-zdravi-nez-skodi","status":"publish","type":"post","link":"https:\/\/www.invarena.cz\/?p=6286","title":{"rendered":"Slunce v\u00edc prosp\u00edv\u00e1 zdrav\u00ed, ne\u017e \u0161kod\u00ed"},"content":{"rendered":"

Na\u0161e babi\u010dky asi m\u011bly pravdu, kdy\u017e \u0159\u00edkaly „kam nechod\u00ed slunce, chod\u00ed l\u00e9ka\u0159“. P\u0159esto\u017ee dermatologov\u00e9 a onkologov\u00e9 varuj\u00ed p\u0159ed p\u0159\u00edli\u0161n\u00fdm opalov\u00e1n\u00edm, nen\u00ed to s t\u00edm nebezpe\u010d\u00edm tak zl\u00e9. \u0158\u00edkaj\u00ed to v\u011bdci z univerzity v Edinburghu.<\/strong><\/p>\n

<\/p>\n

Nutnost zm\u011bny v pohledu na vliv slune\u010dn\u00edho z\u00e1\u0159en\u00ed na lidsk\u00fd organismus nazna\u010duje st\u00e1le v\u00edce v\u011bdeck\u00fdch studi\u00ed.<\/p>\n

Na ned\u00e1vn\u00e9 Mezin\u00e1rodn\u00ed konferenci dermatolog\u016f v Edinburghu p\u0159edstavili experti z tamn\u00ed univerzity zaj\u00edmavou studii o vlivu vitam\u00ednu D na kardiovaskul\u00e1rn\u00ed nemoci.<\/p>\n

Slunce podle nich pom\u00e1h\u00e1 p\u0159i sni\u017eov\u00e1n\u00ed krevn\u00edho tlaku, sni\u017euje riziko n\u00e1hl\u00fdch srde\u010dn\u00edch p\u0159\u00edhod a infarktu a prodlu\u017euje tak \u017eivot. Nen\u00ed tedy „jen“ v\u00fdrobcem d\u016fle\u017eit\u00e9ho vitam\u00ednu D.<\/p>\n

Sni\u017euje vysok\u00fd tlak<\/strong><\/p>\n

Proti tradi\u010dn\u00ed n\u00e1mitce konzervativn\u00edch dermatolog\u016f, \u017ee p\u0159\u00edli\u0161n\u00e9 opalov\u00e1n\u00ed vede ke vzniku rakoviny k\u016f\u017ee, p\u0159edlo\u017eili v\u00fdmluvnou statistiku.<\/p>\n

V Brit\u00e1nii je po\u010det \u00famrt\u00ed na infarkt a n\u00e1sledky hypertenze osmdes\u00e1tkr\u00e1t vy\u0161\u0161\u00ed ne\u017e na rakovinu k\u016f\u017ee. Benefit slune\u010dn\u00edho z\u00e1\u0159en\u00ed tak podle nich vysoko p\u0159eva\u017euje nad jeho \u0161kodliv\u00fdm p\u016fsoben\u00edm.<\/p>\n

Edinburg\u0161t\u00ed v\u011bdci zjistili, \u017ee UV z\u00e1\u0159en\u00ed p\u0159i „v\u00fdrob\u011b“ vitam\u00ednu D podporuje uvol\u0148ov\u00e1n\u00ed oxidu dus\u00edku, co\u017e je l\u00e1tka sni\u017euj\u00edc\u00ed krevn\u00ed tlak.<\/p>\n

Sv\u00e9 poznatky t\u00fdm Richarda Wellera z\u00edskal p\u0159i experimentu s 24 dobrovoln\u00edky, u nich\u017e sledoval zm\u011bnu krevn\u00edho tlaku p\u0159i vystaven\u00ed se UV z\u00e1\u0159en\u00ed a tak\u00e9 infra\u010derven\u00e9mu z\u00e1\u0159en\u00ed, tedy teplu.<\/p>\n

Jestli\u017ee dobrovoln\u00edci byli na hodinu vystaven\u00ed p\u016fsoben\u00ed UV paprsk\u016f, jejich hodnoty krevn\u00edho tlaku klesly, p\u0159i aplikaci pouze tepeln\u00e9ho z\u00e1\u0159en\u00ed ke zm\u011bn\u011b nedo\u0161lo.<\/p>\n

P\u0159i prvn\u00edm ani p\u0159i druh\u00e9m experimentu dobrovoln\u00edci nedost\u00e1vali \u017e\u00e1dn\u00fd p\u0159\u00edpravek, kter\u00fd by obsahoval vitam\u00edn D \u2013 jeho hladina v organismu se tak\u00e9 ani u jedn\u00e9 skupiny nezm\u011bnila.<\/p>\n

Dopl\u0148ky nesta\u010d\u00ed<\/strong><\/p>\n

„Domn\u00edv\u00e1me se, \u017ee pozitivn\u00ed p\u016fsoben\u00ed slune\u010dn\u00edho z\u00e1\u0159en\u00ed na zdrav\u00ed srdce p\u0159evy\u0161uj\u00ed z\u00e1pory rizika vzniku rakoviny k\u016f\u017ee,“ shrnul Weller.\u00a0 Rovn\u011b\u017e vysv\u011btluje, \u017ee samotn\u00e9 pod\u00e1v\u00e1n\u00ed potravn\u00edch dopl\u0148k\u016f podporuj\u00edc\u00edch tvorbu vitam\u00ednu D nen\u00ed schopn\u00e9 vyv\u00e1\u017eit absenci p\u016fsoben\u00ed slune\u010dn\u00edho svitu.“<\/p>\n

„Jestli\u017ee se potvrd\u00ed, \u017ee slunce skute\u010dn\u011b sni\u017euje \u00famrtnost, bude t\u0159eba p\u0159ehodnotit l\u00e9ka\u0159sk\u00e1 doporu\u010den\u00ed t\u00fdkaj\u00edc\u00ed se pobytu na slunci,“ uzav\u0159el sv\u00e9 vystoupen\u00ed na konferenci Weller.<\/p>\n

Kr\u00e1tce po konferenci vy\u0161la v britsk\u00e9m odborn\u00e9m \u010dasopisu Journal of Allergy and Clinical Immunology studie v\u011bnovan\u00e1 souvislostem „slune\u010dn\u00edho“ vitam\u00ednu D a astmatu.<\/p>\n

Catherine Hawrylowiczov\u00e1 z lond\u00fdnsk\u00e9 King\u2019s College v n\u00ed tvrd\u00ed, \u017ee slune\u010dn\u00ed z\u00e1\u0159en\u00ed m\u00e1 na toto onemocn\u011bn\u00ed d\u00fdchac\u00edch cest p\u0159\u00edzniv\u00fd vliv. Ni\u017e\u0161\u00ed hladina vitam\u00ednu D v organismu toti\u017e symptomy astmatu zhor\u0161uje.<\/p>\n

Kdy\u017e se nedost\u00e1v\u00e1 dechu<\/strong><\/p>\n

Hawrylowiczov\u00e1 zjistila, \u017ee vitam\u00edn D uklid\u0148uje nadm\u011brnou aktivitu imunitn\u00edho syst\u00e9mu.<\/p>\n

Dlouhodob\u00fd z\u00e1n\u011bt sliznic v d\u00fdchac\u00edm \u00fastroj\u00ed, kter\u00fd postupem \u010dasu vede ke zt\u00ed\u017een\u00e9mu d\u00fdch\u00e1n\u00ed a\u017e k dechov\u00e9 nedostate\u010dnosti, popsal u\u017e \u0159\u00edmsk\u00fd l\u00e9ka\u0159 Gal\u00e9n, p\u0159esto je \u0159azen k tzv. civiliza\u010dn\u00edm chorob\u00e1m, proto\u017ee na jeho vznik a rozvoj maj\u00ed vliv jak genetick\u00e9, tak environment\u00e1ln\u00ed faktory. V sou\u010dasnosti je astma l\u00e9\u010deno v\u011bt\u0161inou steroidy, ty v\u0161ak u n\u011bkter\u00fdch p\u0159\u00edpad\u016f nepom\u00e1haj\u00ed.<\/p>\n

„Lid\u00e9 s vy\u0161\u0161\u00ed hladinou vitam\u00ednu D astma v\u011bt\u0161inou l\u00e9pe zvl\u00e1daj\u00ed \u2013 to je sice zn\u00e1m\u00e9, ale p\u0159esto udivuj\u00edc\u00ed zji\u0161t\u011bn\u00ed,“ poznamenala Hawrylowiczov\u00e1.<\/p>\n

Interleukinu nesm\u00ed b\u00fdt p\u0159\u00edli\u0161<\/strong><\/p>\n

Ve sv\u00e9m v\u00fdzkumu se zam\u011b\u0159ila na vz\u00e1jemn\u00e9 p\u016fsoben\u00ed vitam\u00ednu D a interleukinu IL-17. To je protein, produkovan\u00fd b\u00edl\u00fdmi krvinkami (leukocyty), kter\u00e9 jsou aktivn\u00ed v imunitn\u00edm syst\u00e9mu v boji s infekcemi. Je-li v\u0161ak tohoto interleukinu v organismu nadbytek, m\u016f\u017ee se jeho vliv na zdravotn\u00ed stav \u2013 mimo jin\u00e9 u astmatik\u016f \u2013 obr\u00e1tit a\u017e do negativn\u00edch d\u016fsledk\u016f.<\/p>\n

Hawrylowiczov\u00e1 laboratorn\u011b prok\u00e1zala, \u017ee nadm\u011brn\u00e1 hladina nterleukinu v krvi pacient\u016f s astmatem se po p\u0159id\u00e1n\u00ed vitam\u00ednu D v\u00fdznamn\u011b sn\u00ed\u017eila.<\/p>\n

P\u0159id\u00e1n\u00ed vitam\u00ednu by tak m\u011blo sn\u00ed\u017eit z\u00e1t\u011b\u017e pacienta z l\u00e9\u010dby p\u0159\u00edli\u0161 velk\u00fdm mno\u017estv\u00edm interleukinu.<\/p>\n

P\u0159ipomenula, \u017ee organismus astmatik\u016f, resistentn\u00edch v\u016f\u010di l\u00e9\u010db\u011b steroidy, produkuje a\u017e sedmkr\u00e1t v\u00edce interleukinu ne\u017e organismus „klasick\u00fdch“ pacient\u016f. Je tedy teoreticky mo\u017en\u00e9, \u017ee dopln\u011bn\u00ed l\u00e9\u010dby slune\u010dn\u00edm z\u00e1\u0159en\u00edm by m\u011blo u problematick\u00fdch astmatik\u016f v\u00e9st ke sn\u00ed\u017een\u00ed symptom\u016f.<\/p>\n

Bez vedlej\u0161\u00edch \u00fa\u010dink\u016f<\/strong><\/p>\n

Podle Hawrylowiczov\u00e9 je n\u00e1r\u016fst v\u00fdskytu astmatu mo\u017en\u00e9 spojovat s kulturou zakr\u00fdv\u00e1n\u00ed t\u011bla p\u0159ed sluncem a pou\u017e\u00edv\u00e1n\u00edm kr\u00e9m\u016f omezuj\u00edc\u00edch dopad UV z\u00e1\u0159en\u00ed na poko\u017eku. „Je to v\u0161ak t\u0159eba posuzovat velmi opatrn\u011b, proto\u017ee v\u00edme, jak v\u00e1\u017en\u00e9 mohou b\u00fdt n\u00e1sledky nadm\u011brn\u00e9ho slun\u011bn\u00ed,“ poznamenala.<\/p>\n

Star\u00e1 dobr\u00e1 helioterapie<\/strong><\/p>\n

U\u017e loni na podzim vy\u0161el ve v\u011bstn\u00edku Proceedings of the National Academy of Sciences \u010dl\u00e1nek specialist\u016f z lond\u00fdnsk\u00e9 Univerzity kr\u00e1lovny Mary o pozitivn\u00edm vlivu vitam\u00ednu D na n\u00e1kazu plicn\u00ed tuberkul\u00f3zou.<\/p>\n

Autor \u010dl\u00e1nku Adrian Martineau p\u0159ipomn\u011bl, \u017ee u\u017e d\u0159\u00edve se proti tuberkul\u00f3ze bojovalo mimo jin\u00e9 tzv. helioterapi\u00ed, vystaven\u00edm pacienta intenz\u00edvn\u00edmu p\u016fsoben\u00ed slunce. Toto „nucen\u00e9 opalov\u00e1n\u00ed“ m\u011blo za c\u00edl \u2013 a tak\u00e9 tak \u010dinilo \u2013 zv\u00fd\u0161it produkci vitam\u00ednu D v t\u011ble nemocn\u00e9ho. S n\u00e1stupem antibiotik byla tato metoda l\u00e9\u010dby TBC a dal\u0161\u00edch plicn\u00edch infekc\u00ed odsunuta.<\/p>\n

Pracovn\u00edci univerzity ve spolupr\u00e1ci s r\u016fzn\u00fdmi lond\u00fdnsk\u00fdmi nemocnicemi provedli porovn\u00e1n\u00ed \u00fasp\u011b\u0161nosti l\u00e9\u010dby u pacient\u016f s TBC. V\u0161ichni byli l\u00e9\u010deni antibiotiky, \u010d\u00e1sti souboru byl pod\u00e1v\u00e1n nav\u00edc vitam\u00edn D v pilulk\u00e1ch.<\/p>\n

Zat\u00edmco pacienti l\u00e9\u010den\u00ed pouze antibiotiky pot\u0159ebovali k \u00fasp\u011b\u0161n\u00e9mu dovr\u0161en\u00ed l\u00e9\u010dby 36 dn\u00ed, nemocn\u00ed, kte\u0159\u00ed brali tak\u00e9 vitam\u00edn, se infekce zbavili pr\u016fm\u011brn\u011b za 23 dn\u00ed.<\/p>\n

„Asi to nenahrad\u00ed antibiotika, ale vitam\u00edn D ze slune\u010dn\u00edho z\u00e1\u0159en\u00ed m\u016f\u017ee b\u00fdt u\u017eite\u010dnou zbran\u00ed v l\u00e9\u010db\u011b n\u00e1kazy,“ uvedl Martineau. „A vypad\u00e1 to slibn\u011b,“ dodal.<\/p>\n

V\u0161eho v\u017edycky s m\u00edrou<\/strong><\/p>\n

Lze \u0159\u00edci, \u017ee p\u0159\u00edroda je lep\u0161\u00ed ne\u017e jak\u00fdkoli syntetick\u00fd l\u00e9k \u2013 vitam\u00edn D ze slunce bude pro organismus v\u017edycky „\u010dist\u0161\u00ed“ ne\u017e ka\u017ed\u00fd vitam\u00ednov\u00fd \u010di potravinov\u00fd dopln\u011bk. Ryb\u00ed tuk, j\u00e1tra, \u017eloutek \u010di ml\u00e9ko jsou jist\u011b vhodn\u00fdm zdrojem, ale pohodln\u011bj\u0161\u00edm, dostupn\u011bj\u0161\u00edm a pro n\u011bkoho i p\u0159\u00edjemn\u011bj\u0161\u00edm bude nepochybn\u011b slunce. Ale opatrn\u011b!<\/p>\n

Na\u0161e moudr\u00e9 babi\u010dky nejen d\u00e1valy p\u0159ednost slunci p\u0159ed n\u00e1v\u0161t\u011bvou u l\u00e9ka\u0159e, ale tak\u00e9 \u0159\u00edkaly „v\u0161eho s m\u00edrou“.<\/p>\n

—<\/p>\n

invArena<\/p>\n","protected":false},"excerpt":{"rendered":"

Na\u0161e babi\u010dky asi m\u011bly pravdu, kdy\u017e \u0159\u00edkaly „kam nechod\u00ed slunce, chod\u00ed l\u00e9ka\u0159“. P\u0159esto\u017ee dermatologov\u00e9 a onkologov\u00e9 varuj\u00ed p\u0159ed p\u0159\u00edli\u0161n\u00fdm opalov\u00e1n\u00edm, nen\u00ed to s t\u00edm nebezpe\u010d\u00edm […]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11],"tags":[],"class_list":["post-6286","post","type-post","status-publish","format-standard","hentry","category-zdravi"],"_links":{"self":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/6286","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6286"}],"version-history":[{"count":0,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=\/wp\/v2\/posts\/6286\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=6286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.invarena.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=6286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}