Housenky asp, obecn\u011b zn\u00e1m\u00e9 jako housenky puss, dok\u00e1\u017e\u00ed sv\u00fdmi jedovat\u00fdmi ostny zasadit po\u0159\u00e1dn\u00fd \u0161ok. V\u011bdci objevili v jejich jedu jedine\u010dn\u00fd protein, kter\u00fd vytv\u00e1\u0159\u00ed kruhov\u00fd tvar a d\u011bl\u00e1 d\u00edry do st\u011bn bun\u011bk. Tento mechanismus spou\u0161t\u00ed intenzivn\u00ed bolestiv\u00e9 sign\u00e1ly do mozku, co\u017e vysv\u011btluje nesnesiteln\u00e9 bodnut\u00ed, kter\u00e9 ob\u011bti za\u017e\u00edvaj\u00ed.<\/p>\n\n
V\u011bdci se domn\u00edvaj\u00ed, \u017ee adaptace housenek na vst\u0159ikov\u00e1n\u00ed jedu vznikla prost\u0159ednictv\u00edm horizont\u00e1ln\u00edho p\u0159enosu gen\u016f, co\u017e je vz\u00e1cn\u00fd proces, p\u0159i kter\u00e9m bakterie p\u0159en\u00e1\u0161ej\u00ed geny jin\u00fdm organism\u016fm. V tomto p\u0159\u00edpad\u011b bakterie pravd\u011bpodobn\u011b pat\u0159ily do skupiny Gammaproteobacteria, kter\u00e1 zahrnuje kmeny jako salmonela a E. coli. Bakterie mohly housenku infikovat a vlo\u017eit svou DNA do rozmno\u017eovac\u00edch bun\u011bk a p\u0159edat tak gen jedu potomstvu.<\/p>\n\n
Objev proteinu vytv\u00e1\u0159ej\u00edc\u00edho otvory v jedu housenek asp vyvolal nad\u0161en\u00ed v l\u00e9ka\u0159sk\u00e9 oblasti. V\u011bdci v\u011b\u0159\u00ed, \u017ee by mohl b\u00fdt vyu\u017eit pro doru\u010dov\u00e1n\u00ed l\u00e9\u010div, co\u017e umo\u017en\u00ed l\u00e9\u010div\u016fm pronikat do bun\u011bk \u00fa\u010dinn\u011bji. Krom\u011b toho v\u011bdci zkoumaj\u00ed potenci\u00e1l upravovat tyto toxiny tak, aby c\u00edlily na rakovinn\u00e9 bu\u0148ky nebo patogeny, zat\u00edmco zdrav\u00e9 bu\u0148ky z\u016fstanou nedot\u010deny.<\/p>\n\n
Pochopen\u00ed mechanismu bodnut\u00ed housenek asp m\u016f\u017ee v\u00e9st ke zlep\u0161en\u00fdm strategi\u00edm zvl\u00e1d\u00e1n\u00ed bolesti. Ob\u011bti by m\u011bly v p\u0159\u00edpad\u011b bodnut\u00ed vyhledat l\u00e9ka\u0159skou pomoc, proto\u017ee intenzivn\u00ed bolest m\u016f\u017ee vy\u017eadovat l\u00e9\u010dbu. Prevence je z\u00e1sadn\u00ed, zejm\u00e9na v oblastech, kde jsou housenky asp b\u011b\u017en\u00e9. No\u0161en\u00ed rukavic a vyh\u00fdb\u00e1n\u00ed se kontaktu s vegetac\u00ed m\u016f\u017ee minimalizovat riziko bodnut\u00ed.<\/p>\n\n
Housenky asp se vyskytuj\u00ed p\u0159edev\u0161\u00edm na dubu a jilmu v Severn\u00ed Americe. Obvykle se \u017eiv\u00ed listy, ale jejich skryt\u00e9 ostny p\u0159edstavuj\u00ed hrozbu pro \u010dlov\u011bka. Jed je obzvl\u00e1\u0161t\u011b siln\u00fd v larv\u00e1ln\u00edm st\u00e1diu, kdy jsou housenky nejaktivn\u011bj\u0161\u00ed. Jakmile dosp\u011bj\u00ed v m\u016fry, jed se st\u00e1v\u00e1 m\u00e9n\u011b \u00fa\u010dinn\u00fdm.<\/p>\n\n
Objev horizont\u00e1ln\u00edho p\u0159enosu gen\u016f u housenek asp vrh\u00e1 sv\u011btlo na komplexn\u00ed a dynamickou povahu evoluce. Nazna\u010duje, \u017ee organismy mohou z\u00edsk\u00e1vat nov\u00e9 vlastnosti nejen prost\u0159ednictv\u00edm d\u011bdi\u010dnosti, ale tak\u00e9 prost\u0159ednictv\u00edm interakc\u00ed s jin\u00fdmi druhy. Tento objev poskytuje dal\u0161\u00ed d\u00edlek do skl\u00e1da\u010dky toho, jak se \u017eivot vyv\u00edjel po miliony let.<\/p>\n\n
Studie o jedu housenek asp otev\u00edr\u00e1 nov\u00e9 cesty pro v\u00fdzkum. V\u011bdci se t\u011b\u0161\u00ed na to, \u017ee budou zkoumat hloub\u011bji horizont\u00e1ln\u00ed p\u0159enos gen\u016f, jeho mechanismy a jeho roli v evoluci dal\u0161\u00edch organism\u016f. Krom\u011b toho potenci\u00e1ln\u00ed l\u00e9ka\u0159sk\u00e9 vyu\u017eit\u00ed jedine\u010dn\u00e9ho proteinu v jedu ospravedl\u0148uje dal\u0161\u00ed v\u00fdzkum za \u00fa\u010delem vyu\u017eit\u00ed jeho terapeutick\u00e9ho potenci\u00e1lu.<\/p>","protected":false},"excerpt":{"rendered":"
Bodnut\u00ed Housenkou Asp: Nesnesiteln\u00e1 bolest s potenci\u00e1lem pro l\u00e9\u010debn\u00e9 vyu\u017eit\u00ed Unik\u00e1tn\u00ed mechanismus jedu Housenky asp, obecn\u011b zn\u00e1m\u00e9 jako housenky puss, dok\u00e1\u017e\u00ed sv\u00fdmi jedovat\u00fdmi ostny zasadit po\u0159\u00e1dn\u00fd \u0161ok. V\u011bdci objevili v…<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[288],"tags":[16844,4163,16845,136,7480,277,342],"class_list":["post-12458","post","type-post","status-publish","format-standard","hentry","category-biology","tag-asp-caterpillars","tag-pain","tag-drug-delivery","tag-evolution","tag-horizontal-gene-transfer","tag-venom","tag-life-science"],"_links":{"self":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/12458","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/comments?post=12458"}],"version-history":[{"count":1,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/12458\/revisions"}],"predecessor-version":[{"id":12459,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/posts\/12458\/revisions\/12459"}],"wp:attachment":[{"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/media?parent=12458"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/categories?post=12458"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.lifescienceart.com\/cs\/wp-json\/wp\/v2\/tags?post=12458"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}