{"id":190367,"date":"2020-04-27T20:02:37","date_gmt":"2020-04-27T19:02:37","guid":{"rendered":"http:\/\/zakrasnejsivimperk.cz\/?p=190367"},"modified":"2020-11-06T10:39:43","modified_gmt":"2020-11-06T09:39:43","slug":"vyzva-nesviti-se-nekde-zbytecne","status":"publish","type":"post","link":"https:\/\/zakrasnejsivimperk.cz\/?p=190367","title":{"rendered":"V\u00ddZVA: Nesv\u00edt\u00ed se n\u011bkde zbyte\u010dn\u011b?"},"content":{"rendered":"<h6>Inspirac\u00ed pro vyhl\u00e1\u0161en\u00ed v\u00fdzvy Nesv\u00edt\u00ed se n\u011bkde zbyte\u010dn\u011b? byly krom\u011b pr\u00e1v\u011b skon\u010den\u00e9ho Mezin\u00e1rodn\u00edho t\u00fddne tmav\u00e9 oblohy tak\u00e9 \u00fakazy na obloze posledn\u00edch t\u00fddn\u016f &#8211; super\u00fapln\u011bk, mnoho jasn\u00fdch noc\u00ed a pohled\u016f na jarn\u00ed souhv\u011bzd\u00ed nebo t\u0159eba v\u010derej\u0161\u00ed konjunkce planety Venu\u0161e s m\u011bs\u00ed\u010dn\u00edm srpkem viditeln\u00e9 v\u017edy l\u00e9pe z m\u00edst s mal\u00fdm sv\u011bteln\u00fdm zne\u010di\u0161t\u011bn\u00edm. Ale p\u0159edev\u0161\u00edm ot\u00e1zky ve\u0159ejnosti, kter\u00e9 zn\u011bly stejn\u011b jako n\u00e1zev v\u00fdzvy.<\/h6>\n<p><em><img loading=\"lazy\" decoding=\"async\" class=\"alignright wp-image-190368\" src=\"http:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/04\/27\/Lampa-s-rou\u0161kou.jpg\" alt=\"\" width=\"300\" height=\"612\" srcset=\"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/04\/27\/Lampa-s-rou\u0161kou.jpg 569w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/04\/27\/Lampa-s-rou\u0161kou-147x300.jpg 147w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/04\/27\/Lampa-s-rou\u0161kou-502x1024.jpg 502w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/04\/27\/Lampa-s-rou\u0161kou-175x357.jpg 175w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/04\/27\/Lampa-s-rou\u0161kou-237x483.jpg 237w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-182037 alignleft\" src=\"http:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo-300x300.jpg\" alt=\"\" width=\"300\" height=\"300\" srcset=\"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo-300x300.jpg 300w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo-150x150.jpg 150w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo-768x768.jpg 768w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo-357x357.jpg 357w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo-483x483.jpg 483w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo-210x210.jpg 210w, https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/01\/13\/\u010desk\u00e1-astronomick\u00e1-spole\u010dnost-logo.jpg 790w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/>&#8220;Lid\u00e9 n\u00e1m pos\u00edlali dotazy, pro\u010d se i p\u0159es naprosto utichl\u00fd \u017eivot ve spole\u010dnosti v\u0161ude sv\u00edt\u00ed po\u0159\u00e1d naplno, kdy\u017e na ulic\u00edch nikdo nen\u00ed&#8221;,<\/em> \u0159\u00edk\u00e1 p\u0159edseda Odborn\u00e9 skupiny pro tmavou oblohu a \u010dlen mezirezortn\u00ed pracovn\u00ed skupiny ke sv\u011bteln\u00e9mu zne\u010di\u0161t\u011bn\u00ed veden\u00e9 Ministerstvem \u017eivotn\u00edho prost\u0159ed\u00ed Pavel Suchan a dod\u00e1v\u00e1: <em>&#8220;V\u0161ichni jsme sv\u011bdky toho, jak si p\u0159\u00edroda v t\u00e9to dob\u011b od lid\u00ed odpo\u010d\u00edv\u00e1. Ale na no\u010dn\u00ed \u017eivo\u010dichy, kter\u00fdm zasahujeme do jejich biotop\u016f na\u0161im \u010d\u00edm d\u00e1l v\u011bt\u0161\u00edm sv\u00edcen\u00edm, jsme zapomn\u011bli. Nav\u00edc pot\u0159ebujeme pro n\u00e1pravu ekonomick\u00fdch \u0161kod ka\u017edou korunu. A tu m\u016f\u017eeme u\u0161et\u0159it vypnut\u00edm zbyte\u010dn\u00e9ho sv\u00edcen\u00ed. Zd\u016fraz\u0148uji to slovo zbyte\u010dn\u00e9ho. Poj\u010fme si ud\u011blat inventuru kolem sebe.&#8221;<\/em><\/p>\n<p>&nbsp;<\/p>\n<h6 style=\"text-align: left;\">V\u00fdzva: Nesv\u00edt\u00ed se n\u011bkde zbyte\u010dn\u011b? (pln\u00e9 zn\u011bn\u00ed)<\/h6>\n<p>V dob\u011b nouzov\u00e9ho stavu, kdy jsou ulice lidupr\u00e1zdn\u00e9, sv\u00edt\u00edme st\u00e1le stejn\u011b. Celou noc a v\u0161ude. Na ulic\u00edch, na parkovi\u0161t\u00edch supermarket\u016f, na pam\u00e1tky, na kter\u00e9 se nikdo ned\u00edv\u00e1 a v pr\u016fmyslov\u00fdch are\u00e1lech, kde nikdo nepracuje. A kdy\u017e se nyn\u00ed bude \u017eivot vracet do star\u00fdch kolej\u00ed, budeme\u00a0pot\u0159ebovat u\u0161et\u0159it ka\u017edou korunu na podporu d\u016fle\u017eit\u00fdch v\u011bc\u00ed chodu na\u0161\u00ed spole\u010dnosti. Zbyte\u010dn\u00e9 sv\u00edcen\u00ed do toho nepat\u0159\u00ed. Poj\u010fme zhasnout aspo\u0148 ta sv\u011btla, kter\u00e1 nepot\u0159ebujeme! Pod\u00edvejte se pros\u00edm kolem sebe. Za\u010dn\u011bte u sebe, jestli v\u00e1m mus\u00ed celou noc sv\u00edtit sv\u011btlo na dvorku. Pod\u00edvejte se po obci, jestli n\u011bkde na konci nesv\u00edt\u00ed lampa, kter\u00e1 tam je k ni\u010demu. Zeptejte se starosty, jestli v noci osv\u011btlen\u00ed tlum\u00ed (normy to povoluj\u00ed, osv\u011btlen\u00ed sv\u00edt\u00ed a p\u0159\u00edroda aspo\u0148 trochu odpo\u010d\u00edv\u00e1). A vy, kdo vyr\u00e1b\u00edte, zastavili jste v\u00fdrobu? Ne\u0161la by tedy \u010d\u00e1st osv\u011btlen\u00ed zhasnout?<\/p>\n<p>Ne\u017e\u00e1d\u00e1me takov\u00e9 \u00fapravy, kter\u00e9 by sn\u00ed\u017eily bezpe\u010dnost. Ale vyz\u00fdv\u00e1me k \u00faspor\u00e1m, kter\u00e9 te\u010f v\u0161ichni budeme pot\u0159ebovat. Vyz\u00fdv\u00e1me k ochran\u011b no\u010dn\u00edho prost\u0159ed\u00ed a p\u0159\u00edrody, proto\u017ee jsme jej\u00ed sou\u010d\u00e1st\u00ed. Zhasn\u011bme zbyte\u010dn\u00e1 sv\u011btla.<\/p>\n<p>S v\u00fdzvou p\u0159ich\u00e1z\u00ed Odborn\u00e1 skupina pro tmavou oblohu \u010cesk\u00e9 astronomick\u00e9 spole\u010dnosti &#8211; <strong><a href=\"https:\/\/www.astro.cz\/spolecnost\/usporadani-spolecnosti\/odborne-skupiny\/odborna-skupina-pro-tmave-nebe.html\" target=\"_blank\" rel=\"noopener\">https:\/\/www.astro.cz\/spolecnost\/usporadani-spolecnosti\/odborne-skupiny\/odborna-skupina-pro-tmave-nebe.html<\/a>, <\/strong>www.svetelneznecisteni.cz.<\/p>\n<p>Je to zalo\u017eeno jako facebookov\u00e1 Ud\u00e1lost <a href=\"https:\/\/www.facebook.com\/events\/799776223882056\/\" target=\"_blank\" rel=\"noopener\"><strong>https:\/\/www.facebook.com\/events\/799776223882056\/<\/strong><\/a>, do kter\u00e9 ka\u017ed\u00fd den p\u0159ibude n\u011bjak\u00fd p\u0159\u00edsp\u011bvek, kter\u00fd se z\u00e1rove\u0148 bude zobrazovat na facebooc\u00edch &#8220;Sv\u011bteln\u00e9 zne\u010di\u0161t\u011bn\u00ed&#8221;, &#8220;Chci zase vid\u011bt nebe pln\u00e9 hv\u011bzd&#8221; a &#8220;Jizersk\u00e1 oblast tmav\u00e9 oblohy&#8221;.<\/p>\n<p>Jeden z prvn\u00edch p\u0159\u00edsp\u011bvk\u016f uve\u0159ejn\u011bn\u00fdch v r\u00e1mci v\u00fdzvy Nesv\u00edt\u00ed se n\u011bkde zbyte\u010dn\u011b?<\/p>\n<h6>Krakov n\u00e1s p\u0159edb\u011bhl<\/h6>\n<p>Technick\u00e9 slu\u017eby polsk\u00e9ho m\u011bsta Krakov v posledn\u00edch dnech mezi p\u016flnoc\u00ed a \u010dtvrtou hodinou rann\u00ed v r\u00e1mci \u00faspor vyp\u00ednaj\u00ed lampy ve\u0159ejn\u00e9ho osv\u011btlen\u00ed. Od\u016fvodnily to t\u00edm, \u017ee v d\u016fsledku restrikc\u00ed zaveden\u00fdch kv\u016fli \u0161\u00ed\u0159en\u00ed koronaviru jsou ulice tou dobou pr\u00e1zdn\u00e9. Tma zahalila tak\u00e9 nejzn\u00e1m\u011bj\u0161\u00ed krakovsk\u00e9 pam\u00e1tky &#8211; hrad Wawel nebo t\u0159eba Mari\u00e1nsk\u00fd kostel na n\u00e1m\u011bst\u00ed Rynek Gl\u00f3wny, kter\u00e9 jsou b\u011b\u017en\u011b osv\u011bcov\u00e1ny. Michal Pyclik z technick\u00fdch slu\u017eeb vysv\u011btlil, \u017ee ve\u0159ejn\u00e9 osv\u011btlen\u00ed se vyp\u00edn\u00e1 v dob\u011b, kdy u\u017e lid\u00e9 maj\u00ed za\u0159\u00edzen\u00e9 v\u0161echny v\u011bci, kv\u016fli nim\u017e musej\u00ed opustit domov a kdy kon\u010d\u00ed provoz m\u011bstsk\u00e9 hromadn\u00e9 dopravy. Lampy se zase rozsv\u011bcuj\u00ed tehdy, kdy\u017e obyvatel\u00e9 Krakova vyr\u00e1\u017eej\u00ed do pr\u00e1ce na rann\u00ed sm\u011bny. Ka\u017edou noc podle n\u011bho m\u011bsto u\u0161et\u0159\u00ed 20 tis\u00edc zlot\u00fdch (119 660 korun). Mimochodem, takhle se chov\u00e1 i \u0159ada \u010desk\u00fdch obc\u00ed.<\/p>\n<p>Mezin\u00e1rodn\u00ed t\u00fdden tmav\u00e9 oblohy (IDSW \u2013 International Dark Sky Week) organizovan\u00fd International Dark-Sky Association skon\u010dil v ned\u011bli, ale my pokra\u010dujeme, nejen kv\u016fli hv\u011bzd\u00e1m. \u0160lo o t\u00fdden oslavy noci a jej\u00ed ochrany, kter\u00fd podporuje v\u011bdce, u\u010ditele, spisovatele, tv\u016frce a ka\u017ed\u00e9ho z n\u00e1s (ne)oby\u010dejn\u00fdch lid\u00ed v boji proti sv\u011bteln\u00e9mu zne\u010di\u0161t\u011bn\u00ed a vzd\u011bl\u00e1v\u00e1n\u00ed d\u011bt\u00ed a dosp\u011bl\u00fdch o t\u00e9to problematice (v \u010cesk\u00e9m republice nap\u0159. <a href=\"http:\/\/svetelneznecisteni.cz\/svetlo-dobry-sluha-a-zly-pan\/\" target=\"_blank\" rel=\"noopener\"><strong>http:\/\/svetelneznecisteni.cz\/svetlo-dobry-sluha-a-zly-pan\/<\/strong><\/a> nebo pro d\u011bti v r\u00e1mci V\u011bda na doma Akademie v\u011bd <a href=\"http:\/\/svetelneznecisteni.cz\/co-maji-hvezdarny-a-sovy-spolecneho-potrebuji-tmu-aneb-prednaska-pro-deti\/\" target=\"_blank\" rel=\"noopener\"><strong>http:\/\/svetelneznecisteni.cz\/co-maji-hvezdarny-a-sovy-spolecneho-potrebuji-tmu-aneb-prednaska-pro-deti\/<\/strong><\/a>).\u2060 Po cel\u00e9m sv\u011bt\u011b tak byly organizov\u00e1ny r\u016fzn\u00e9 akce, p\u0159edn\u00e1\u0161ky a dom\u00e1c\u00ed i ve\u0159ejn\u00e9 iniciativy.<\/p>\n<h6>Dva p\u0159\u00edklady za v\u0161echny<\/h6>\n<p>\u017de sv\u011btla do no\u010dn\u00edho prost\u0159ed\u00ed jenom p\u0159ib\u00fdv\u00e1 a ob\u010dany mnohdy obt\u011b\u017euje, vn\u00edm\u00e1me nejen kolem sebe, ale i ze zpr\u00e1v lid\u00ed, kter\u00e9 Odborn\u00e1 skupina pro tmav\u00e9 nebe \u010cesk\u00e9 astronomick\u00e9 spole\u010dnosti dost\u00e1v\u00e1. Za v\u0161echny citujeme dv\u011b, ob\u011b velmi \u00fazce souvis\u00ed s odstavcem n\u00ed\u017ee &#8220;COVID-19&#8221;:<\/p>\n<p>&#8220;U n\u00e1s v ulici je to te\u010f na draka. M\u011bli jsme tu oran\u017eov\u00e9 sod\u00edkov\u00e9 sv\u011btlo na n\u00edzk\u00fdch sloupech. Te\u010f tu m\u00e1me ledky, co\u017e by samo o sob\u011b nevadilo, ale jsou snad na \u0161estimetrov\u00fdch sloupech, sv\u00edt\u00ed to jako\u00a0hrom, st\u00edn\u00edtko to nem\u00e1, i v pat\u0159e jsme museli nainstalovat \u017ealuzie. A p\u0159\u00edmo p\u0159ed domem m\u00e1me p\u0159echod, a to sv\u00edt\u00ed mnohon\u00e1sobn\u011b v\u00edc&#8230;&#8221;<\/p>\n<p>&#8220;Pr\u00e1v\u011b jsem napsal jedn\u00e9 firm\u011b, kter\u00e1 m\u00e1 naproti m\u00e9mu sou\u010dasn\u00e9mu bydli\u0161ti sv\u011bteln\u00fd panel, kter\u00fd sv\u00edt\u00ed celou noc. Je tak intenzivn\u00ed, \u017ee \u010d\u00e1st sv\u011btla projde i p\u0159es zata\u017een\u00e9 \u017ealuzie.&#8221;<\/p>\n<h6>Co vn\u00edmat jako zbyte\u010dn\u00e9 sv\u00edcen\u00ed?<\/h6>\n<p>D\u00e1vno p\u0159ed n\u00e1mi to sledoval Tom\u00e1\u0161 Zelenka ze Zvole u Prahy: &#8220;Zbyte\u010dn\u00e9 sv\u00edcen\u00ed monitoruji za pomoc\u00ed fotopasti a \u010d\u00e1ste\u010dn\u011b celooblohov\u00e9 kamery. Od listopadu 2019 do 15. dubna 2020 pro\u0161li pod \u010dty\u0159mi lampami dva lid\u00e9. D\u00e1le bylo zaznamen\u00e1no 96 kus\u016f sp\u00e1rkat\u00e9 zv\u011b\u0159e, 6x jezevec, 28x li\u0161ka, 26x kuna, 4x bachyn\u011b, 36x zaj\u00edc, 8x V\u00fdr velk\u00fd, 16x pu\u0161t\u00edk, 76x ko\u010dka a 2 x toulav\u00fd pes. Posledn\u00ed m\u011bs\u00edc hodn\u011b netop\u00fdr\u016f, ale to se \u0161patn\u011b po\u010d\u00edt\u00e1, to je frnk a je to pry\u010d. Hmyz se za\u010d\u00edn\u00e1 kupit. Zm\u00edn\u011bn\u00ed dva chodci m\u00ed\u0159\u00edc\u00ed dol\u016f do les\u016f m\u011bli v obou p\u0159\u00edpadech \u010delovku, na rozd\u00edl od v\u00fd\u0161e zm\u00edn\u011bn\u00e9ho zbytku. Za dobu od 18. listopadu 2019 do 15. dubna 2020 projelo za svitu lamp 27 automobil\u016f. V\u0161em sv\u00edtily reflektory. Lampy sv\u00edtily v tomto obdob\u00ed 2 133 hodin.&#8221;<\/p>\n<h6>COVID-19, melatonin a pot\u0159eba tmy<\/h6>\n<p>Nen\u00ed to samosp\u00e1sn\u00e9, ale d\u016fle\u017eit\u00e9. V r\u00e1mci v\u00fdzvy se budeme v\u011bnovat tak\u00e9 souvislostem se sou\u010dasnou pandemi\u00ed. N\u00ed\u017ee uv\u00e1d\u00edme p\u0159ipraven\u00e9 pojedn\u00e1n\u00ed docentky Zdenky Bendov\u00e9 z Katedry fyziologie P\u0159\u00edrodov\u011bdeck\u00e9 fakulty Univerzity Karlovy:<\/p>\n<p>Imunitn\u00ed odpov\u011b\u010f, posilov\u00e1n\u00ed imunity, cytokinov\u00e9 bou\u0159e, bun\u011b\u010dn\u00e1 imunita, vitam\u00edn C, vitam\u00edn D\u2026to jsou v\u0161echno term\u00edny, kter\u00e9 n\u00e1s v posledn\u00edch t\u00fddnech za\u0161koluj\u00ed do fungov\u00e1n\u00ed imunitn\u00edho syst\u00e9mu. \u010casto se tak\u00e9 zd\u016fraz\u0148uje, \u017ee sp\u00e1nek je z\u00e1sadn\u00ed pro dobrou funkci na\u0161\u00ed imunity, ale u\u017e m\u00e9n\u011b se zd\u016fraz\u0148uje, jak je d\u016fle\u017eit\u00e9 sp\u00e1t ve tm\u011b. Sp\u00e1nek s\u00e1m o sob\u011b jednozna\u010dn\u011b posiluje imunitn\u00ed syst\u00e9m a tma v noci je d\u016fle\u017eit\u00e1 pro jeho kvalitu. Tma zaji\u0161\u0165uje ale tak\u00e9 n\u011bco jin\u00e9ho, co se sp\u00e1nkem souvis\u00ed jen nep\u0159\u00edmo, ale p\u0159\u00edmo s funkc\u00ed imunitn\u00edho syst\u00e9mu, a t\u00edm je dostate\u010dn\u011b vysok\u00e1 hladina melatoninu. Melatonin je sice zn\u00e1m hlavn\u011b jako tzv. hormon sp\u00e1nku, kter\u00fd napom\u00e1h\u00e1 us\u00edn\u00e1n\u00ed, jeho hlavn\u00ed funkce ale spo\u010d\u00edv\u00e1 pr\u00e1v\u011b v posilov\u00e1n\u00ed imunitn\u00edch odpov\u011bd\u00ed.<\/p>\n<p>Bezpo\u010det v\u011bdeck\u00fdch publikac\u00ed prokazuje jeho antioxida\u010dn\u00ed (<strong><a href=\"https:\/\/doi.org\/10.3390\/molecules23020509\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.3390\/molecules23020509<\/a><\/strong>) a protiz\u00e1n\u011btliv\u00e9 vlastnosti (DOI : 10.2174\/1381612824666180426112832), jeho pozitivn\u00ed \u00falohu ve vrozen\u00e9 (<strong><a href=\"https:\/\/doi.org\/10.1111\/jpi.12075\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1111\/jpi.12075<\/a><\/strong>) i z\u00edskan\u00e9 &#8211; t\u00e9 protil\u00e1tkov\u00e9 (<strong><a href=\"https:\/\/doi.org\/10.1016\/j.vaccine.2009.01.001\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1016\/j.vaccine.2009.01.001<\/a><\/strong>) imunit\u011b. Pokusy na my\u0161\u00edch nap\u0159. uk\u00e1zaly, \u017ee melatonin spolehliv\u011b redukuje z\u00e1n\u011btliv\u00e9 procesy v plic\u00edch spojen\u00e9 s p\u0159irozen\u00fdm st\u00e1rnut\u00edm (<a href=\"https:\/\/doi.org\/10.1016\/j.exger.2015.11.021\" target=\"_blank\" rel=\"noopener\"><strong>https:\/\/doi.org\/10.1016\/j.exger.2015.11.021<\/strong><\/a>), ale pom\u00e1h\u00e1 i plic\u00edm ku\u0159\u00e1k\u016f (<strong><a href=\"https:\/\/doi.org\/10.1111\/jpi.12192\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1111\/jpi.12192<\/a><\/strong>), plic\u00edm zasa\u017een\u00fdm polutanty z ovzdu\u0161\u00ed (<strong><a href=\"https:\/\/doi.org\/10.1016\/j.biopha.2019.108737\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1016\/j.biopha.2019.108737<\/a><\/strong>), \u010di radioaktivn\u00edm z\u00e1\u0159en\u00edm (<strong><a href=\"https:\/\/doi.org\/10.22074\/cellj.2019.6207\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.22074\/cellj.2019.6207<\/a><\/strong>). M\u00e1 onkostatick\u00e9 \u00fa\u010dinky (<strong><a href=\"https:\/\/doi.org\/10.1007\/s11010-019-03617-5\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1007\/s11010-019-03617-5<\/a><\/strong>) a dokonce zm\u00edr\u0148uje i hemoragick\u00e9 c\u00e9vn\u00ed zm\u011bny zp\u016fsoben\u00e9 virem Eboly (<strong><a href=\"https:\/\/doi.org\/10.1016\/j.isci.2019.100765\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1016\/j.isci.2019.100765<\/a><\/strong>). Ve v\u00fd\u010dtu pozitivn\u00edch \u00fa\u010dink\u016f melatoninu bychom mohli pokra\u010dovat dlouho, a nen\u00ed v\u016fbec divu, \u017ee melatonin prodlu\u017euje \u017eivot. A\u0165 ji\u017e odd\u00e1len\u00edm p\u0159irozen\u00e9ho st\u00e1rnut\u00ed (<strong><a href=\"https:\/\/doi.org\/10.1073\/pnas.91.2.787\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1073\/pnas.91.2.787<\/a><\/strong>), \u010di zm\u00edr\u0148ov\u00e1n\u00edm on\u011bch smrteln\u00fdch cytokinov\u00fdch bou\u0159\u00ed po bakteri\u00e1ln\u00ed (<strong><a href=\"https:\/\/doi.org\/10.1111\/j.1600-079X.2005.00265.x\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1111\/j.1600-079X.2005.00265.x<\/a><\/strong>) \u010di virov\u00e9 n\u00e1kaze (<strong><a href=\"https:\/\/doi.org\/10.1046\/j.1600-079X.2003.00105.x\" target=\"_blank\" rel=\"noopener\">https:\/\/doi.org\/10.1046\/j.1600-079X.2003.00105.x<\/a><\/strong>).<\/p>\n<p>Melatonin je tvo\u0159en v pine\u00e1ln\u00ed \u017el\u00e1ze neboli \u0161i\u0161ince a jeho synt\u00e9za je spou\u0161t\u011bna sign\u00e1ly z biologick\u00fdch hodin um\u00edst\u011bn\u00fdch v suprachiasmatick\u00fdch j\u00e1drech hypotalamu tak, aby za\u010d\u00ednala v\u017edy ve\u010der. Pokud na sebe ale sv\u00edt\u00edme dlouho do noci um\u011bl\u00fdm sv\u011btlem, jeho synt\u00e9za se zpozd\u00ed, nebo neza\u010dne v\u016fbec, p\u0159\u00edpadn\u011b jeho hladina nedos\u00e1hne takov\u00e9 \u00farovn\u011b, aby v organismu n\u011bco zmohl. Je myln\u00e9 se domn\u00edvat, \u017ee kdy\u017e se b\u011bhem dne schov\u00e1me do tmy, m\u016f\u017eeme \u201cdosyntetizovat\u201d, co jsme ve\u010der potla\u010dili sv\u00fdmi po\u010d\u00edta\u010dov\u00fdmi monitory. Biologick\u00e9 hodiny v\u011bd\u00ed, \u017ee je den, a synt\u00e9zu melatoninu nespust\u00ed ani v temn\u00e9m sklep\u011b. Naopak, z mnoha r\u016fzn\u00fdch d\u016fvod\u016f pot\u0159ebuj\u00ed na\u0161e biologick\u00e9 hodiny (nejen vitam\u00edn D), hodn\u011b denn\u00edho sv\u011btla, stejn\u011b jako co nejv\u011bt\u0161\u00ed tmu v noci.<\/p>\n<p>V (ne)d\u00e1vn\u00fdch dob\u00e1ch, kdy je\u0161t\u011b neexistovalo um\u011bl\u00e9 osv\u011btlen\u00ed, kop\u00edrovala no\u010dn\u00ed hladina melatoninu d\u00e9lku noci tak, jak se m\u011bnila s ro\u010dn\u00edm obdob\u00edm. V zim\u011b tedy \u0161i\u0161inka produkovala nejm\u00e9n\u011b dvakr\u00e1t tolik melatoninu co v l\u00e9t\u011b. Organismus ho m\u011bl d\u00edky tomu k disposici tolik pr\u00e1v\u011b v obdob\u00ed, kdy b\u00fdv\u00e1 jeho imunitn\u00ed syst\u00e9m velmi vyt\u00ed\u017een.<\/p>\n<p>V posledn\u00edch letech je no\u010dn\u00edho sv\u011btla kolem n\u00e1s opravdu hodn\u011b. Sv\u011btlo za\u010dalo b\u00fdt levn\u00e9 a jeho biologick\u00e9 \u00fa\u010dinky \u0159e\u0161\u00ed jen p\u00e1r zasv\u011bcen\u00fdch odborn\u00edk\u016f. P\u0159itom je st\u00e1le v\u00edce z\u0159ejm\u00e9, \u017ee pe\u010dovat o svoje biologick\u00e9 hodiny a o melatonin se vyplat\u00ed. Zhas\u00ednejme v noci. Nejen doma, ale i venku, proto\u017ee tak\u00e9 pt\u00e1ci, hmyz, veverky, ryby v potoce\u2026 v\u0161ichni maj\u00ed melatonin, kter\u00fd pe\u010duje o jejich imunitn\u00ed syst\u00e9my a nem\u00e1 r\u00e1d sv\u011btlo v noci.<\/p>\n<p>Paraleln\u011b b\u011b\u017e\u00ed jin\u00e1 akce, na soci\u00e1ln\u00edch s\u00edt\u00edch jako #osvetle<\/p>\n<p>na webu pak https:\/\/www.uceeb.cz\/aktualne-o-svetle. Upozor\u0148uje na d\u016fle\u017eitost a spojen\u00e9 n\u00e1doby nezbytn\u00e9 tmy v noci a z\u00e1rove\u0148 co nejv\u011bt\u0161\u00ed osv\u011btlenosti ve dne.<\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><strong>Pavel Suchan<\/strong><\/p>\n<p style=\"text-align: center;\"><strong>p\u0159edseda Odborn\u00e9 skupiny pro tmavou oblohu \u010cesk\u00e9 astronomick\u00e9 spole\u010dnosti<\/strong><\/p>\n<p style=\"text-align: center;\">\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Inspirac\u00ed pro <\/p>\n","protected":false},"author":2,"featured_media":190372,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"gallery","meta":{"footnotes":""},"categories":[83],"tags":[],"jetpack_featured_media_url":"https:\/\/zakrasnejsivimperk.cz\/wp-content\/uploads\/2020\/04\/27\/r\u00e1me\u010dek-v\u00fdzva.jpg","_links":{"self":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/190367"}],"collection":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=190367"}],"version-history":[{"count":4,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/190367\/revisions"}],"predecessor-version":[{"id":207531,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/posts\/190367\/revisions\/207531"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=\/wp\/v2\/media\/190372"}],"wp:attachment":[{"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=190367"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=190367"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/zakrasnejsivimperk.cz\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=190367"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}