{"id":4328,"date":"2018-03-10T23:37:34","date_gmt":"2018-03-10T22:37:34","guid":{"rendered":"https:\/\/hyfac.fr\/?p=4328"},"modified":"2018-09-23T20:53:22","modified_gmt":"2018-09-23T18:53:22","slug":"hyperpigmentation-taches-cutanees","status":"publish","type":"post","link":"https:\/\/hyfac.fr\/cs\/sos-dermato\/4328-hyperpigmentation-taches-cutanees\/","title":{"rendered":"L&#8217;hyperpigmentation"},"content":{"rendered":"<p><img loading=\"lazy\" class=\"aligncenter size-full wp-image-4377\" src=\"https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/banniere_site_hyfac_intro_themes8.jpg\" alt=\"hyperpigmentace\" width=\"3554\" height=\"700\" srcset=\"https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/banniere_site_hyfac_intro_themes8.jpg 3554w, https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/banniere_site_hyfac_intro_themes8-300x59.jpg 300w, https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/banniere_site_hyfac_intro_themes8-1024x202.jpg 1024w\" sizes=\"(max-width: 3554px) 100vw, 3554px\" \/><\/p>\n<h1 style=\"text-align: center; color: #5e2f24;\">Pozn\u00e1n\u00ed a l\u00e9\u010dba pigmentov\u00fdch skvrn<\/h1>\n<p>&nbsp;<\/p>\n<h2><span style=\"color: #5e2f24;\">Jak se v k\u016f\u017ei tvo\u0159\u00ed pigmenty?<\/span><\/h2>\n<p>Pigmentace k\u016f\u017ee je d\u016fsledkem produkce melaninu. Tento jev se naz\u00fdv\u00e1 <strong><span style=\"color: #c8a99a;\">melanogeneze<\/span><\/strong>.<\/p>\n<p><img loading=\"lazy\" class=\"alignright wp-image-4453\" src=\"https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/mecanisme-pigmentation-peau-clarifac.jpg\" alt=\"\" width=\"473\" height=\"342\" srcset=\"https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/mecanisme-pigmentation-peau-clarifac.jpg 1171w, https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/mecanisme-pigmentation-peau-clarifac-300x217.jpg 300w, https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/mecanisme-pigmentation-peau-clarifac-1024x740.jpg 1024w\" sizes=\"(max-width: 473px) 100vw, 473px\" \/><\/p>\n<p align=\"justify\">Bu\u0148ky zodpov\u011bdn\u00e9 za produkci melaninu jsou <strong><span style=\"color: #c8a99a;\">melanocyty<\/span><\/strong>Nach\u00e1zej\u00ed se na b\u00e1zi epidermis (nejpovrchn\u011bj\u0161\u00ed vrstvy k\u016f\u017ee). Jsou rovnom\u011brn\u011b rozm\u00edst\u011bny v baz\u00e1ln\u00ed vrstv\u011b epidermis a ve vlasov\u00fdch folikulech. Po\u010det melanocyt\u016f je u r\u016fzn\u00fdch etnick\u00fdch typ\u016f k\u016f\u017ee stejn\u00fd.  Ka\u017ed\u00fd melanocyt je ve vztahu s p\u0159ibli\u017en\u011b 36 keratinocyty, mezi kter\u00e9 rozd\u011bluje vyprodukovan\u00fd melanin, a vytv\u00e1\u0159\u00ed tak \"epiderm\u00e1ln\u00ed melaniza\u010dn\u00ed jednotku\".<\/p>\n<p align=\"justify\">Na prot\u011bj\u0161\u00edm obr\u00e1zku je \u0161ed\u00e1 bu\u0148ka melanocyt. Bu\u0148ky, kter\u00e9 ji obklopuj\u00ed (b\u00e9\u017eov\u00e1 barva), jsou <strong><span style=\"color: #c8a99a;\">keratinocyty<\/span><\/strong>Hlavn\u00ed bu\u0148ky epidermis. Kdy\u017e se melanin vytvo\u0159\u00ed, p\u0159enese se do v\u0161ech sousedn\u00edch bun\u011bk. Pigment se tak roz\u0161\u00ed\u0159\u00ed do spodn\u00ed \u010d\u00e1sti epidermis a dod\u00e1 k\u016f\u017ei hn\u011bd\u00e9 zbarven\u00ed.<\/p>\n<p>Existuj\u00ed dva typy melanin\u016f:<\/p>\n<ul>\n<li>Les <strong><span style=\"color: #c8a99a;\">eumelaniny<\/span><\/strong> hn\u011bd\u00e1 nebo \u010dern\u00e1 barva (p\u0159ev\u00e1\u017en\u011b tmav\u00e1 ple\u0165)<\/li>\n<li>Les <strong><span style=\"color: #c8a99a;\">feomelaniny<\/span><\/strong> \u017elut\u00e1 nebo \u010dervenooran\u017eov\u00e1, m\u00e9n\u011b fotoprotektivn\u00ed (nej\u010dast\u011bji u \u010derven\u00e9 pleti).<\/li>\n<\/ul>\n<blockquote>\n<p align=\"justify\">Takto se barvy pleti pohybuj\u00ed od velmi sv\u011btl\u00e9 a\u017e po \u010dernou. \u010cerven\u00e1 barva je zp\u016fsobena p\u0159\u00edtomnost\u00ed ur\u010dit\u00e9ho melaninu odli\u0161n\u00e9 barvy.<\/p>\n<\/blockquote>\n<p align=\"justify\">Pigmentace melaninem je tedy geneticky podm\u00edn\u011bn\u00e1 a je <strong><span style=\"color: #c8a99a;\">Regulovan\u00e9 UV z\u00e1\u0159en\u00edm<\/span><\/strong>n\u011bkter\u00e9 hormony a chemick\u00e9 medi\u00e1tory. <a href=\"https:\/\/hyfac.fr\/cs\/sos-dermato\/4324-le-soleil-et-la-peau\/\">ultrafialov\u00e9 slune\u010dn\u00ed paprsky<\/a>\u00a0zp\u016fsobuj\u00ed zv\u00fd\u0161enou aktivitu melanocyt\u016f: k\u016f\u017ee se zbarv\u00ed do hn\u011bda, co\u017e je to, \u010demu \u0159\u00edk\u00e1me \"hn\u011bd\u00e1 k\u016f\u017ee\". <strong><span style=\"color: #c8a99a;\">opalov\u00e1n\u00ed<\/span><\/strong>. Je to zp\u016fsob, jak\u00fdm se poko\u017eka chr\u00e1n\u00ed.<\/p>\n<p>&nbsp;<\/p>\n<h2><span style=\"color: #5e2f24;\">Jak\u00e9 jsou r\u016fzn\u00e9 typy pigmentov\u00fdch skvrn?<\/span><\/h2>\n<p>Existuj\u00ed r\u016fzn\u00e9 typy skvrn melanick\u00e9ho p\u016fvodu:<\/p>\n<ul>\n<li>\n<p align=\"justify\">Les <strong><span style=\"color: #c8a99a;\">kr\u00e1sn\u00e1 m\u00edsta<\/span><\/strong>Jedn\u00e1 se o nezhoubn\u00e9 proliferace melanocyt\u016f, kter\u00e9 se shlukuj\u00ed do shluk\u016f. Zjevn\u011b nespadaj\u00ed do oblasti p\u016fsobnosti depigmenta\u010dn\u00edch kosmetick\u00fdch p\u0159\u00edpravk\u016f.<\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p align=\"justify\">Les <strong><span style=\"color: #c8a99a;\">pihy<\/span><\/strong> jsou mal\u00e9 skvrny tvo\u0159en\u00e9 t\u00edmto zvl\u00e1\u0161tn\u00edm melaninem, kter\u00fd produkuje pouze zrzav\u00e1 ple\u0165. Jsou p\u0159irozen\u00e9 a na slunci se zviditel\u0148uj\u00ed.<\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p align=\"justify\">Les<strong><span style=\"color: #c8a99a;\"> slune\u010dn\u00ed nebo sta\u0159eck\u00e9 skvrny<\/span><\/strong> (kter\u00e9 dermatologov\u00e9 naz\u00fdvaj\u00ed lentigo).<img loading=\"lazy\" class=\"alignright wp-image-4412\" src=\"https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/taches-vieillesse-clarifac-pigmentation-peau.png\" alt=\"\" width=\"272\" height=\"205\" srcset=\"https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/taches-vieillesse-clarifac-pigmentation-peau.png 451w, https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/taches-vieillesse-clarifac-pigmentation-peau-300x225.png 300w\" sizes=\"(max-width: 272px) 100vw, 272px\" \/>\u00a0jsou mal\u00e9 tmav\u011b hn\u011bd\u00e9 skvrny, kter\u00e9 se \u010dast\u011bji vyskytuj\u00ed na \u010d\u00e1stech t\u011bla vystaven\u00fdch slunci (h\u0159bet rukou, dekolt, obli\u010dej). Pigment se nach\u00e1z\u00ed na b\u00e1zi epidermis. S v\u011bkem se zv\u011bt\u0161uje jejich velikost a po\u010det. Jsou obl\u00edben\u00fdm c\u00edlem <a href=\"https:\/\/hyfac.fr\/cs\/nos-gammes\/clarifac-soin-anti-taches\/\">depigmenta\u010dn\u00ed kosmetika<\/a>.<\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p align=\"justify\">Le <strong><span style=\"color: #c8a99a;\">melasma<\/span><\/strong> peut appara\u00eetre durant la grossesse ou lors d&#8217;un traitement hormonal (pilule). Il est accentu\u00e9 par le <a href=\"https:\/\/hyfac.fr\/cs\/sos-dermato\/4323-protection-et-creme-solaire-bien-proteger-sa-peau-face-au-soleil-hyfac\/\">slunce<\/a>. Jsou to sv\u011btle hn\u011bd\u00e9 a\u017e velmi tmav\u011b hn\u011bd\u00e9 skvrny s nepravideln\u00fdm ohrani\u010den\u00edm. Nach\u00e1zej\u00ed se symetricky na \u010dele, tv\u00e1\u0159\u00edch a n\u011bkdy i na horn\u00edm rtu. Pigment melanin se m\u016f\u017ee nach\u00e1zet v epidermis, ale tak\u00e9 v dermis nebo na obou m\u00edstech sou\u010dasn\u011b. Depigmenta\u010dn\u00ed kosmetikou lze zlep\u0161it pouze pigment p\u0159\u00edtomn\u00fd v epidermis.<\/p>\n<\/li>\n<\/ul>\n<ul>\n<li>\n<p align=\"justify\">Les <strong><span style=\"color: #c8a99a;\">poz\u00e1n\u011btliv\u00e9 pigmentov\u00e9 skvrny<\/span><\/strong> jsou pigmentov\u00e9 n\u00e1sledky z\u00e1n\u011btu k\u016f\u017ee. Mohou se objevit po infekci, ko\u017en\u00ed alergii, reakci na l\u00e9ky nebo \u00farazu. Jsou \u010dast\u00e9 <a href=\"https:\/\/hyfac.fr\/cs\/sos-dermato\/4329-acne-de-l-adolescent\/\">b\u011bhem akn\u00e9<\/a>.<\/p>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h2><span style=\"color: #5e2f24;\">Jak depigmenta\u010dn\u00ed p\u0159\u00edpravky funguj\u00ed?<\/span><\/h2>\n<p align=\"justify\">Les <a href=\"https:\/\/hyfac.fr\/cs\/nos-gammes\/clarifac-soin-anti-taches\/\">depigmenta\u010dn\u00ed p\u0159\u00edpravky<\/a>proti skvrn\u00e1m nebo odleh\u010den\u00ed, umo\u017e\u0148uj\u00ed <strong><span style=\"color: #c8a99a;\">sn\u00ed\u017eit intenzitu pigmentu<\/span><\/strong>ale skvrny zcela nezmiz\u00ed. T\u0159i hlavn\u00ed mechanismy umo\u017e\u0148uj\u00ed redukci pigmentov\u00fdch skvrn: redukce spou\u0161t\u011bc\u00edch sign\u00e1l\u016f zp\u016fsoben\u00fdch ultrafialov\u00fdmi paprsky slunce, redukce produkce melaninu v melanocytech, redukce p\u0159enosu melaninu do bun\u011bk epidermis.<\/p>\n<p>&nbsp;<\/p>\n<hr \/>","protected":false},"excerpt":{"rendered":"<p>Porozum\u011bn\u00ed pigmentov\u00fdm skvrn\u00e1m a jejich l\u00e9\u010dba Jak vznikaj\u00ed pigmenty v k\u016f\u017ei? Pigmentace k\u016f\u017ee je d\u016fsledkem tvorby melaninu. Tento jev se naz\u00fdv\u00e1 melanogeneze. Bu\u0148ky zodpov\u011bdn\u00e9 za produkci melaninu jsou melanocyty, kter\u00e9 se nach\u00e1zej\u00ed ve spodn\u00ed \u010d\u00e1sti epidermis (nejsvrchn\u011bj\u0161\u00ed vrstvy k\u016f\u017ee). <a class='lire-suite' href=\"https:\/\/hyfac.fr\/cs\/sos-dermato\/4328-hyperpigmentation-taches-cutanees\/\">P\u0159e\u010dt\u011bte si v\u00edce &gt;&gt;&gt;<\/a><\/p>","protected":false},"author":1,"featured_media":4348,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"en-passant","meta":{"_mi_skip_tracking":false,"spay_email":""},"categories":[86],"tags":[],"jetpack_featured_media_url":"https:\/\/hyfac.fr\/wp-content\/uploads\/2018\/03\/banniere_carree_site_hyfac_intro_themes8.jpg","_links":{"self":[{"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/posts\/4328"}],"collection":[{"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/comments?post=4328"}],"version-history":[{"count":20,"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/posts\/4328\/revisions"}],"predecessor-version":[{"id":5046,"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/posts\/4328\/revisions\/5046"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/media\/4348"}],"wp:attachment":[{"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/media?parent=4328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/categories?post=4328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hyfac.fr\/cs\/wp-json\/wp\/v2\/tags?post=4328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}