{"id":3561,"date":"2020-04-07T15:08:52","date_gmt":"2020-04-07T13:08:52","guid":{"rendered":"https:\/\/www.enviblog.cz\/blog\/?p=3561"},"modified":"2020-04-07T15:26:22","modified_gmt":"2020-04-07T13:26:22","slug":"souvisi-umrtnost-na-koronavirus-s-kvalitou-ovzdusi-nova-studie-ukazuje-ze-mozna-ano-muzeme-vsak-studii-verit","status":"publish","type":"post","link":"https:\/\/www.enviblog.cz\/blog\/2020\/04\/07\/souvisi-umrtnost-na-koronavirus-s-kvalitou-ovzdusi-nova-studie-ukazuje-ze-mozna-ano-muzeme-vsak-studii-verit\/","title":{"rendered":"Souvis\u00ed smrtnost na koronavirus s kvalitou ovzdu\u0161\u00ed? Nov\u00e1 studie ukazuje, \u017ee mo\u017en\u00e1 ano, m\u016f\u017eeme v\u0161ak studii v\u011b\u0159it?"},"content":{"rendered":"<p><em><strong>Nov\u00e1 studie publikovan\u00e1 v \u010dasopise Environmental Pollution od autorsk\u00e9ho kolektivu z It\u00e1lie a D\u00e1nska poukazuje na mo\u017en\u00fd vztah mezi smrtnost\u00ed na nov\u00fd typ koronaviru a dlouhodob\u00fdm zne\u010di\u0161t\u011bn\u00edm ovzdu\u0161\u00ed v konkr\u00e9tn\u00ed oblasti. V tomto \u010dl\u00e1nku se pod\u00edv\u00e1me na z\u00e1v\u011bry studie, nebude ale chyb\u011bt ani n\u00e1\u0161 vlastn\u00ed koment\u00e1\u0159 k v\u00fdsledk\u016fm studie.<\/strong><\/em><\/p>\n<p><a href=\"https:\/\/www.sciencedirect.com\/science\/article\/pii\/S0269749120320601\" target=\"_blank\" rel=\"noopener noreferrer\">Studie<\/a> od v\u011bdc\u016f z italsk\u00e9 University of Seina a d\u00e1nsk\u00e9 Aarhus University ukazuje, \u017ee mo\u017enou p\u0159\u00ed\u010dinou vysok\u00e9 smrtnosti na koronavirus SARS-CoV-2 v n\u011bkter\u00fdch \u010d\u00e1stech It\u00e1lie by mohla b\u00fdt dlouhodob\u011b zv\u00fd\u0161en\u00e1 koncentrace zne\u010di\u0161\u0165uj\u00edc\u00edch l\u00e1tek v t\u00e9to oblasti. Vysok\u00e1 smrtnost byla v It\u00e1lii zaznamen\u00e1na p\u0159edev\u0161\u00edm v regionech Lombardie a Emilia Romagna. Oba tyto regiony se nach\u00e1z\u00ed v severn\u00ed \u010d\u00e1sti zem\u011b. Auto\u0159i zmi\u0148uj\u00ed vysokou m\u00edru zne\u010di\u0161t\u011bn\u00ed v dan\u00fdch oblastech. Jak to v Evrop\u011b vypad\u00e1 se m\u016f\u017eeme pod\u00edvat na n\u00e1sleduj\u00edc\u00ed map\u011b. V \u010dl\u00e1nku se hovo\u0159\u00ed p\u0159edev\u0161\u00edm o zne\u010di\u0161t\u011bn\u00ed prachov\u00fdmi \u010d\u00e1sticemi PM<sub>2,5<\/sub>. N\u00e1sleduj\u00edc\u00ed mapu jsem p\u0159evzal od Agentury pro \u017eivotn\u00ed prost\u0159ed\u00ed (EEA) a ukazuje pr\u016fm\u011brn\u00e9 ro\u010dn\u00ed koncentrace PM<sub>2,5<\/sub> z roku 2016.<\/p>\n<figure id=\"attachment_3562\" aria-describedby=\"caption-attachment-3562\" style=\"width: 768px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/chmibrno.org\/blog\/wp-content\/uploads\/2020\/04\/PM2.5Europe2016.png\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-3562 size-full\" src=\"https:\/\/chmibrno.org\/blog\/wp-content\/uploads\/2020\/04\/PM2.5Europe2016.png\" alt=\"\" width=\"768\" height=\"657\" srcset=\"https:\/\/www.enviblog.cz\/blog\/wp-content\/uploads\/2020\/04\/PM2.5Europe2016.png 768w, https:\/\/www.enviblog.cz\/blog\/wp-content\/uploads\/2020\/04\/PM2.5Europe2016-300x257.png 300w\" sizes=\"(max-width: 768px) 100vw, 768px\" \/><\/a><figcaption id=\"caption-attachment-3562\" class=\"wp-caption-text\"><em>Mapa pr\u016fm\u011brn\u00fdch ro\u010dn\u00edch koncentrac\u00ed suspendovan\u00fdch \u010d\u00e1stic PM<sub>2,5<\/sub> v Evrop\u011b, rok 2016 (European Environment Agency, EEA)<\/em><\/figcaption><\/figure>\n<p>Z mapy je patrn\u00e9, \u017ee severn\u00ed \u010d\u00e1st It\u00e1lie opravdu je velmi zat\u00ed\u017eenou oblast\u00ed v r\u00e1mci Evropy. \u010cl\u00e1nek uv\u00e1d\u00ed celkovou smrtnost v Lombardii a Emilia Romagna k 21. 3. 2020 jako 12 %. Hypot\u00e9zou tedy je, \u017ee vysok\u00e1 smrtnost m\u016f\u017ee b\u00fdt d\u00e1na pr\u00e1v\u011b dlouhodob\u00fdm vysok\u00fdm imisn\u00edm zat\u00ed\u017een\u00edm t\u00e9to oblasti. Zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed je jedn\u00edm z nejzn\u00e1m\u011bj\u0161\u00edch p\u016fvodc\u016f dlouhodob\u00e9ho z\u00e1n\u011btu, kter\u00fd postupn\u011b m\u016f\u017ee v\u00e9st k hyperaktivaci imunitn\u00edho syst\u00e9mu. Toto m\u016f\u017ee postihnout i funkci kardiovaskul\u00e1rn\u00edho syst\u00e9mu (Yang et al., 2019; Radan, 2019). Jak uk\u00e1zaly n\u011bkter\u00e9 dal\u0161\u00ed studie, z\u00e1v\u011bry popsan\u00e9 na my\u0161\u00edch se potvrdily i u lidsk\u00fdch subjekt\u016f a systematick\u00fd z\u00e1n\u011bt v d\u016fsledku koncentrac\u00ed PM<sub>10<\/sub> a PM<sub>2,5<\/sub> m\u016f\u017ee vzniknout u i zdrav\u00fdch neku\u0159\u00e1k\u016f (Pope et al., 2016; Tsai et al., 2019). Jak popisuje \u010dl\u00e1nek cituj\u00edc\u00ed dal\u0161\u00ed studie, nejen prachov\u00e9 \u010d\u00e1stice m\u016f\u017eou p\u0159isp\u00edvat k tvorb\u011b z\u00e1n\u011btu, roli hraj\u00ed nap\u0159\u00edklad tak\u00e9 koncentrace p\u0159\u00edzemn\u00edho ozonu (O<sub>3<\/sub>) nebo oxidu si\u0159i\u010dit\u00e9ho (SO<sub>2<\/sub>) (Kurai et al., 2018; Che et al., 2016 a Cho et al., 2007).<\/p>\n<p>V z\u00e1v\u011bru studie auto\u0159i konstatuj\u00ed, \u017ee v\u011bdeck\u00e9 poznatky o mo\u017en\u00fdch dopadech vysok\u00fdch koncentrac\u00ed prachov\u00fdch \u010d\u00e1stic a dal\u0161\u00edch zne\u010di\u0161\u0165uj\u00edc\u00edch l\u00e1tek znamenaj\u00ed, \u017ee lid\u00e9 \u017eij\u00edc\u00ed v oblastech dlouhodob\u011b vysok\u00e9ho zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed m\u016f\u017eou m\u00edt oslaben\u00fd imunitn\u00ed syst\u00e9m \u010di b\u00fdt v\u00edce n\u00e1chyln\u00ed k rozvoji chronick\u00fdch d\u00fdchac\u00edch obt\u00ed\u017e\u00ed a infekc\u00edm, a to v\u010detn\u011b mlad\u00fdch, zdrav\u00fdch jedinc\u016f. Podle autor\u016f m\u016f\u017ee pr\u00e1v\u011b toto vysv\u011btlovat, pro\u010d v oblastech severn\u00ed It\u00e1lie pozorujeme vy\u0161\u0161\u00ed smrtnost po naka\u017een\u00ed koronavirem SARS-CoV-2. Auto\u0159i tak\u00e9 zmi\u0148uj\u00ed, \u017ee do hry samoz\u0159ejm\u011b vstupuje cel\u00e1 \u0159ada dal\u0161\u00edch faktor\u016f, kter\u00e9 m\u016f\u017eou b\u00fdt v kone\u010dn\u00e9m d\u016fsledku d\u016fle\u017eit\u011bj\u0161\u00ed, ne\u017e dlouhodob\u00e1 m\u00edra zne\u010di\u0161t\u011bn\u00ed v oblasti.<\/p>\n<h2>Koment\u00e1\u0159<\/h2>\n<p>Toliko z\u00e1v\u011bry studie publikovan\u00e9 4. dubna v \u010dasopise Environmental Pollution. Nyn\u00ed si dovol\u00edm napsat kr\u00e1tk\u00fd koment\u00e1\u0159 k t\u00e9to studii. Na jednu stranu si mysl\u00edm, \u017ee my\u0161lenka vlivu dlouhodob\u00e9ho zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed na m\u00edru smrtnosti na infekci koronavirem je zaj\u00edmav\u00e1 a nelze ji zcela vylou\u010dit. Bohu\u017eel m\u00e1 ale studie i n\u011bkter\u00e9 nedostatky, l\u00e9pe \u0159e\u010deno je velmi kr\u00e1tk\u00e1 a nezab\u00fdv\u00e1 se n\u011bkter\u00fdmi dal\u0161\u00edmi podstatn\u00fdmi faktory. Cel\u00e1 anal\u00fdza \u010dl\u00e1nku nem\u00e1 ani jednu stranu A4 a zab\u00fdv\u00e1 se tak\u0159ka v\u00fdhradn\u011b citacemi studi\u00ed, kter\u00e9 se zab\u00fdvaly vlivem \u010d\u00e1stic PM<sub>2,5<\/sub> a PM<sub>10<\/sub> na lidsk\u00e9 zdrav\u00ed, konkr\u00e9tn\u011b p\u0159edev\u0161\u00edm na d\u00fdchac\u00ed syst\u00e9m.<\/p>\n<p>Prvn\u00ed z nedostatk\u016f vid\u00edm u\u017e v samotn\u00e9 map\u011b zne\u010di\u0161t\u011bn\u00ed. Ano, sever It\u00e1lie pat\u0159\u00ed k nejv\u00edce zasa\u017een\u00fdm, ale pokud se pod\u00edv\u00e1me zbl\u00edzka, zjist\u00edme, \u017ee Emilia Romagna nen\u00ed v nejv\u00edce zne\u010di\u0161t\u011bn\u00e9 oblasti a n\u011bkter\u00e9 jej\u00ed \u010d\u00e1sti jsou ji\u017e v map\u011b vyzna\u010deny modrou barvou, tedy v\u00fdrazn\u011b ni\u017e\u0161\u00edm ro\u010dn\u00edm pr\u016fm\u011brem PM<sub>2,5<\/sub> ne\u017e oblast \u00fapln\u011b na severu. Do t\u00e9to oblasti pat\u0159\u00ed regiony Piemont, Lombardie, Ben\u00e1tsko a Tridentsko-Horn\u00ed Adi\u017ee. V tomto sm\u011bru se hned nab\u00edz\u00ed dal\u0161\u00ed ot\u00e1zka, sever It\u00e1lie pat\u0159\u00ed k nejv\u00edce zne\u010di\u0161t\u011bn\u00fdm, ale takov\u00fdch oblast\u00ed je v\u00edce. Jen v Evrop\u011b vid\u00edme nap\u0159\u00edklad podobnou m\u00edru zne\u010di\u0161t\u011bn\u00ed v n\u011bkter\u00fdch \u010d\u00e1stech Polska, ale i Moravskoslezsk\u00e9ho kraje \u010di v n\u011bkter\u00fdch st\u00e1tech Balk\u00e1nsk\u00e9ho poloostrova. Poj\u010fme se ale pod\u00edvat d\u00e1le do sv\u011bta, konkr\u00e9tn\u011b do \u010c\u00edny, odkud se koronavirus roz\u0161\u00ed\u0159il. Podle \u00fadaj\u016f <a href=\"https:\/\/data.worldbank.org\/indicator\/en.atm.pm25.mc.m3\" target=\"_blank\" rel=\"noopener noreferrer\">WorldBank<\/a> je pr\u016fm\u011brn\u00e1 koncentrace PM<sub>2,5<\/sub> v \u010c\u00edn\u011b n\u011bco p\u0159es 50 \u00b5g\/m<sup>3<\/sup>. Ve m\u011bstech je v\u0161ak situace je\u0161t\u011b o pozn\u00e1n\u00ed hor\u0161\u00ed. Pokud se nyn\u00ed pod\u00edv\u00e1te na legendu na obr\u00e1zku Evropy, zjist\u00edte, \u017ee v It\u00e1lii se pr\u016fm\u011br pohybuje kolem 15 a\u017e 25 \u00b5g\/m<sup>3<\/sup>. Tady tedy vid\u00edm prvn\u00ed potenci\u00e1ln\u00ed probl\u00e9m. Studie se v\u016fbec nezab\u00fdv\u00e1 potenci\u00e1ln\u011b vysok\u00fdm zne\u010di\u0161t\u011bn\u00edm v jin\u00fdch oblastech ne\u017e je Evropa. P\u0159itom smrtnost z jin\u00fdch oblast\u00ed zn\u00e1me. V \u010c\u00edn\u011b takto vysok\u00e1 nebyla. Nav\u00edc sp\u00ed\u0161e ne\u017e podhodnocen\u00e1 je smrtnost obecn\u011b podhodnocen\u00e1 &#8211; o mrtv\u00fdch se v\u011bt\u0161inou v\u00ed, o naka\u017een\u00fdch se \u010dasto nev\u00ed, nemus\u00ed j\u00edt ani k doktorovi a proto po\u010det naka\u017een\u00fdch, kter\u00fd nejsou zapo\u010d\u00edtan\u00ed je pravd\u011bpodobn\u011b vy\u0161\u0161\u00ed ne\u017e po\u010det nezapo\u010d\u00edtan\u00fdch mrtv\u00fdch, co\u017e obecn\u011b vede k re\u00e1ln\u011b ni\u017e\u0161\u00ed smrtnosti, ne\u017e jak\u00e1 je ud\u00e1v\u00e1na.<\/p>\n<p>Dal\u0161\u00ed z probl\u00e9m\u016f je ona smrtnost. \u010cl\u00e1nek cituje smrtnost v t\u011bchto regionech jako 12 % a jinde 4 %. To v\u0161ak op\u011bt nen\u00ed \u00fapln\u011b pravda. Pod\u00edvejme se na tabulku smrtnosti k aktu\u00e1ln\u00edmu datu <a href=\"https:\/\/clustrmaps.com\/coronavirus\/\" target=\"_blank\" rel=\"noopener noreferrer\">zde<\/a>. Vych\u00e1zet nyn\u00ed budeme z dat, kter\u00e1 v n\u00ed jsou k 7. 4. 2020. Nebudeme se zab\u00fdvat regiony\/zem\u011bmi s velmi mal\u00fdm po\u010dtem naka\u017een\u00fdch a mrtv\u00fdch, tady je jasn\u00e9, \u017ee m\u016f\u017ee b\u00fdt smrtnost velmi zkreslena. Z tabulky vypl\u00fdv\u00e1, \u017ee 12% \u00famrtnost plat\u00ed pro It\u00e1lii jako celek. Jsou zde v\u0161ak i dal\u0161\u00ed zem\u011b s relativn\u011b vysokou smrtnost\u00ed a p\u0159itom ji\u017e vy\u0161\u0161\u00edm po\u010dtem naka\u017een\u00fdch &#8211; Velk\u00e1 Brit\u00e1nie (51 tis\u00edc naka\u017een\u00fdch, smrtnost 10,41 %), Nizozemsko (t\u00e9m\u011b\u0159 20 tis\u00edc naka\u017een\u00fdch, \u00famrtnost 10,73 %) a dal\u0161\u00ed. Op\u011bt se pod\u00edvejme na mapu zne\u010di\u0161t\u011bn\u00ed v Evrop\u011b. Pokud se zam\u011b\u0159\u00edme na Velkou Brit\u00e1nii a Nizozemsko, vid\u00edme, \u017ee pat\u0159\u00ed k \u010dist\u0161\u00edm oblastem Evropy, co se ro\u010dn\u00edho pr\u016fm\u011bru koncentrac\u00ed PM<sub>2,5<\/sub> t\u00fd\u010de. Tady je tedy dal\u0161\u00ed potenci\u00e1ln\u00ed slabina studie, nezab\u00fdv\u00e1 se faktem, \u017ee zv\u00fd\u0161en\u00e1 smrtnost je i v jin\u00fdch oblastech, kde ale s vy\u0161\u0161\u00ed m\u00edrou zne\u010di\u0161t\u011bn\u00ed nekoreluje a naopak, v oblastech mimo Evropu, ale i v Evrop\u011b, kde zne\u010di\u0161t\u011bn\u00ed tak\u00e9 dosahuje vy\u0161\u0161\u00edch hodnot, smrtnost vy\u0161\u0161\u00ed nen\u00ed (nap\u0159\u00edklad v Polsku bylo k 7. 4. evidov\u00e1no 4532 naka\u017een\u00fdch s \u00famrtnost\u00ed &#8222;pouze&#8220; 2,45 %.<\/p>\n<p>Posledn\u00edm d\u016fle\u017eit\u00fdm faktem je, \u017ee v podstat\u011b nikdo v tuto chv\u00edli nedok\u00e1\u017ee kvantifikovat pod\u00edl jednotliv\u00fdch faktor\u016f, kter\u00e9 m\u016f\u017eou hr\u00e1t v smrtnosti roli &#8211; pat\u0159\u00ed sem krom\u011b zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed nap\u0159\u00edklad pr\u016fm\u011brn\u00fd v\u011bk obyvatelstva, \u00farove\u0148, kapacita a vybavenost zdravotnick\u00e9ho syst\u00e9mu a zdravotn\u00edch za\u0159\u00edzen\u00ed, p\u0159ijat\u00e1 preventivn\u00ed opat\u0159en\u00ed, dodr\u017eov\u00e1n\u00ed preventivn\u00edch opat\u0159en\u00ed, a podobn\u00fdch faktor\u016f by se jist\u011b na\u0161la spousta.<\/p>\n<p>Jak\u00fd je tedy z\u00e1v\u011br? A\u010d nelze vylou\u010dit, \u017ee dlouhodob\u011b vy\u0161\u0161\u00ed m\u00edra zne\u010di\u0161t\u011bn\u00ed ovzdu\u0161\u00ed d\u011bl\u00e1 populaci n\u00e1chyln\u011bj\u0161\u00ed a zp\u016fsobuje v\u011bt\u0161\u00ed komplikace kon\u010d\u00edc\u00ed \u010dast\u011bji smrt\u00ed, ze sou\u010dasn\u00fdch dat nelze podobn\u00e9 z\u00e1v\u011bry ud\u011blat, proto\u017ee se situace rychle m\u011bn\u00ed, nelze kvantifikovat pod\u00edl jednotliv\u00fdch slo\u017eek a tedy p\u0159\u00ed\u010dina vy\u0161\u0161\u00ed smrtnosti v n\u011bkter\u00fdch oblastech nemus\u00ed m\u00edt se zne\u010di\u0161t\u011bn\u00edm ovzdu\u0161\u00ed nic spole\u010dn\u00e9ho. Studie neposkytuje \u017e\u00e1dnou komplexn\u011bj\u0161\u00ed anal\u00fdzu, kter\u00e1 by se nap\u0159\u00edklad bl\u00ed\u017ee zam\u011b\u0159ila na konkr\u00e9tn\u00ed oblasti s vy\u0161\u0161\u00edm zne\u010di\u0161t\u011bn\u00edm a to i mimo It\u00e1lii a ve sv\u00e9m zd\u016fvod\u0148ov\u00e1n\u00ed vych\u00e1z\u00ed z velmi omezen\u00e9ho okruhu faktor\u016f. Argumenty, kter\u00e9 studie uv\u00e1d\u00ed, tedy nepova\u017euji za nutn\u011b zcestn\u00e9 a do jist\u00e9 m\u00edry v teoretick\u00e9 rovin\u011b d\u00e1vaj\u00ed smysl, z\u00e1rove\u0148 si ale nemysl\u00edm, \u017ee je v tuto chv\u00edli mo\u017en\u00e9 podobn\u00e9 dedukce u\u010dinit a je pravd\u011bpodobn\u011b nutn\u00e9 b\u00fdt velmi opatrn\u00fd v publikov\u00e1n\u00ed podobn\u00fdch z\u00e1v\u011br\u016f.<\/p>\n<p>&nbsp;<\/p>\n<p><em>Che, L., Jin, Y., Zhang, C., Lai, T., Zhou, H., Xia, L., Tian, B., Zhao, Y., Liu, J., Wu, Y. and Wu, Y., 2016. Ozone-induced IL-17A and neutrophilic airway inflammation is orchestrated by the caspase-1-IL-1 cascade. Scientific reports, 6(1), pp.1-11.<\/em><\/p>\n<p><em>Cho, H.Y., Morgan, D.L., Bauer, A.K. and Kleeberger, S.R., 2007. Signal transduction pathways of tumor necrosis factor\u2013mediated lung injury induced by ozone in mice.\u00a0American journal of respiratory and critical care medicine,\u00a0175(8), pp.829-839.<\/em><\/p>\n<p><em>Kurai, J., Onuma, K., Sano, H., Okada, F. and Watanabe, M., 2018. Ozone augments interleukin-8 production induced by ambient particulate matter. Genes and Environment, 40(1), p.14.<\/em><\/p>\n<p><em>Radan, M., Dianat, M., Badavi, M., Mard, S.A., Bayati, V. and Goudarzi, G., 2019. Gallic acid protects particulate matter (PM 10) triggers cardiac oxidative stress and inflammation causing heart adverse events in rats. Environmental Science and Pollution Research, 26(18), pp.18200-18207.<\/em><\/p>\n<p><em>Yang et al., 2019 J. Yang, Y. Chen, Z. Yu, H. Ding, Z. Ma The influence of PM2.5 on lung injury and cytokines in mice Exp. Ther. Med., 18 (4) (2019), pp. 2503-2511.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nov\u00e1 studie publikovan\u00e1 v \u010dasopise Environmental Pollution od autorsk\u00e9ho kolektivu z It\u00e1lie a D\u00e1nska poukazuje na mo\u017en\u00fd vztah mezi smrtnost\u00ed na nov\u00fd typ koronaviru a dlouhodob\u00fdm zne\u010di\u0161t\u011bn\u00edm ovzdu\u0161\u00ed v konkr\u00e9tn\u00ed oblasti. V tomto \u010dl\u00e1nku se pod\u00edv\u00e1me na z\u00e1v\u011bry studie, nebude ale chyb\u011bt ani n\u00e1\u0161 vlastn\u00ed koment\u00e1\u0159 k v\u00fdsledk\u016fm studie. 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