{"id":28045,"date":"2022-12-09T19:52:23","date_gmt":"2022-12-09T18:52:23","guid":{"rendered":"https:\/\/www.miljomagasinet.se\/?p=28045"},"modified":"2022-12-09T19:52:23","modified_gmt":"2022-12-09T18:52:23","slug":"ventiler-later-fiskarna-latta-pa-trycket-i-cellerna","status":"publish","type":"post","link":"https:\/\/www.miljomagasinet.se\/index.php\/2022\/12\/09\/ventiler-later-fiskarna-latta-pa-trycket-i-cellerna\/","title":{"rendered":"Ventiler l\u00e5ter fiskarna l\u00e4tta p\u00e5 trycket i cellerna"},"content":{"rendered":"<p><strong>Regleringen av v\u00e4tskebalansen i cellerna \u00e4r livsviktigt f\u00f6r allt levande, men ibland r\u00e4cker inte v\u00e4tsketransporten genom cellmembranet till. D\u00e5 anv\u00e4nds vattenkanaler, aquaporiner, som kan \u00f6ppnas och st\u00e4ngas vid behov. Forskare har nu sett indikationer p\u00e5 en unik typ av snabbst\u00e4ngande ventil f\u00f6r vattenkanaler som i f\u00f6rl\u00e4ngningen kan f\u00e5 betydelse f\u00f6r framtagandet av mediciner mot bland annat cancer och alzheimer.<\/strong><\/p>\n<figure id=\"attachment_28047\" aria-describedby=\"caption-attachment-28047\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-28047\" src=\"https:\/\/www.miljomagasinet.se\/wp-content\/uploads\/2022\/12\/1-1.jpg\" alt=\"\" width=\"800\" height=\"445\" \/><figcaption id=\"caption-attachment-28047\" class=\"wp-caption-text\"><em>Forskningen gjordes p\u00e5 aquaporiner fr\u00e5n kl\u00e4tterfisk, <\/em>anabas testudineus<em>. Dessa fiskar har<\/em><br \/><em>f\u00f6rm\u00e5gan att klara sig \u00e4ven p\u00e5 land, vilket st\u00e4ller krav p\u00e5 att de kan reglera v\u00e4tskebalansen<\/em><br \/><em>snabbt.<\/em><br \/><em>(Foto: Shutterstock)<\/em><\/figcaption><\/figure>\n<p>Fiskar lever i vattenmilj\u00f6er med olika salthalt, och vissa arter kan till och med leva upp till en vecka p\u00e5 land. Det st\u00e4ller speciella krav p\u00e5 cellernas aquaporiner f\u00f6r att de ska kunna reglera v\u00e4tskebalansen i v\u00e4ldigt olika milj\u00f6er. Genom att studera aquaporinerna hos kl\u00e4tterfisk (Anabas testudineus) som ibland tar sig upp p\u00e5 land har forskare vid G\u00f6teborgs universitetet kartlagt ett protein som verkar visa p\u00e5 en unik typ av snabbst\u00e4ngande vattenkanal. Resultaten redovisas i en vetenskaplig artikel i Life science alliance.<\/p>\n<p>\u2013 I v\u00e5r senaste studie presenterar vi den f\u00f6rsta h\u00f6guppl\u00f6sta strukturen f\u00f6r en vattenkanal fr\u00e5n fisk som finns i huden och g\u00e4larna. Vi ser att kanalen har en unik veckning p\u00e5 utsidan av cellen och det indikerar en ny typ av snabbst\u00e4ngande ventil f\u00f6r vattenkanaler som \u00e4r specifik f\u00f6r vatten. Ventilen kan m\u00f6jligg\u00f6ra att kanalen \u00f6ppnas och st\u00e4ngs snabbt beroende p\u00e5 den omv\u00e4xlande milj\u00f6n f\u00f6r fisken, s\u00e4ger Kristina Hedfalk, biokemist vid G\u00f6teborgs universitet.<\/p>\n<p>Att f\u00f6rst\u00e5 aguaporiners grundl\u00e4ggande reglering kan p\u00e5 sikt f\u00e5 betydelse f\u00f6r forskningen p\u00e5 nya l\u00e4kemedel mot till exempel hj\u00e4rnsvullnad, n\u00e5got som skulle kunna r\u00e4dda liv efter olyckor och sjukdomar. Vid en hj\u00e4rnsvullnad \u00e4r det viktigt att kunna s\u00e4nka trycket i hj\u00e4rnan innan den tar skada. Genom att odla fram proteinet som styr vattenkanalen i laboratoriemilj\u00f6 har forskarna identifierat egenskaper som kan reglera v\u00e4tskebalansen i cellerna vid snabba f\u00f6r\u00e4ndringar.<\/p>\n<p>Tidigare forskning har visat att hj\u00e4rncellernas aquaporiner har en nedsatt funktion vid begynnande alzheimer, varf\u00f6r denna studie \u00e4ven kan komma att bli ett v\u00e4rdefullt steg till att utveckla mediciner inom detta omr\u00e5de.<\/p>\n<p>\u2013 Det \u00e4r en viktig grundforskning d\u00e4r vi kan se det reglerande proteinet p\u00e5 molekylniv\u00e5. F\u00f6rutom att det kan komma till nytta inom l\u00e4kemedelsforskningen s\u00e5 \u00e4r det ocks\u00e5 viktigt att f\u00f6rst\u00e5 fiskars vattenkanaler f\u00f6r v\u00e5r hantering av fisk vid odling s\u00e5 att fisken m\u00e5r s\u00e5 bra som m\u00f6jligt, s\u00e4ger Kristina Hedfalk.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Regleringen av v\u00e4tskebalansen i cellerna \u00e4r livsviktigt f\u00f6r allt levande, men ibland r\u00e4cker inte v\u00e4tsketransporten genom cellmembranet till. D\u00e5 anv\u00e4nds<\/p>\n","protected":false},"author":12,"featured_media":28047,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"pgc_meta":"","om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[5,11,4,56],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Ventiler l\u00e5ter fiskarna l\u00e4tta p\u00e5 trycket i cellerna - MILJ\u00d6MAGASINET<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.miljomagasinet.se\/index.php\/2022\/12\/09\/ventiler-later-fiskarna-latta-pa-trycket-i-cellerna\/\" \/>\n<meta property=\"og:locale\" content=\"sv_SE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Ventiler l\u00e5ter fiskarna l\u00e4tta p\u00e5 trycket i cellerna - MILJ\u00d6MAGASINET\" \/>\n<meta property=\"og:description\" content=\"Regleringen av v\u00e4tskebalansen i cellerna \u00e4r livsviktigt f\u00f6r allt levande, men ibland r\u00e4cker inte v\u00e4tsketransporten genom cellmembranet till. 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Lundb\u00e4ck","author_link":"https:\/\/www.miljomagasinet.se\/index.php\/author\/jonatan\/"},"rttpg_comment":0,"rttpg_category":"<a href=\"https:\/\/www.miljomagasinet.se\/index.php\/category\/outstanding-news\/\" rel=\"category tag\">Huvudnyheter<\/a> <a href=\"https:\/\/www.miljomagasinet.se\/index.php\/category\/miljo\/\" rel=\"category tag\">Milj\u00f6<\/a> <a href=\"https:\/\/www.miljomagasinet.se\/index.php\/category\/recent-news\/\" rel=\"category tag\">Nyheter<\/a> <a href=\"https:\/\/www.miljomagasinet.se\/index.php\/category\/vetenskap\/\" rel=\"category tag\">Vetenskap<\/a>","rttpg_excerpt":"Regleringen av v\u00e4tskebalansen i cellerna \u00e4r livsviktigt f\u00f6r allt levande, men ibland r\u00e4cker inte v\u00e4tsketransporten genom cellmembranet till. 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