{"id":7520,"date":"2021-05-25T23:37:30","date_gmt":"2021-05-25T21:37:30","guid":{"rendered":"https:\/\/www.fipwarriors.eu\/?p=7520"},"modified":"2023-03-29T09:49:30","modified_gmt":"2023-03-29T07:49:30","slug":"infekcia-felv-a-jej-vztah-k-fip","status":"publish","type":"post","link":"https:\/\/www.fipwarriors.eu\/en\/infekcia-felv-a-jej-vztah-k-fip\/","title":{"rendered":"Synopsis of Feline leukemia virus infection and its relationship to feline infectious peritonitis"},"content":{"rendered":"<p class=\"has-small-font-size wp-block-paragraph\">21.5.2021<br>Niels C. Pedersen, DVM, PhD<br>P&ocirc;vodn&yacute; &#269;l&aacute;nok: <a href=\"https:\/\/ccah.vetmed.ucdavis.edu\/sites\/g\/files\/dgvnsk4586\/files\/inline-files\/FeLV%20infection%20and%20FIP.pdf\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">Synopsis of Feline leukemia virus infection and its relationship to feline infectious peritonitis<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Z&aacute;kladn&eacute; fakty<\/strong> &ndash; V&iacute;rus ma&#269;acej leuk&eacute;mie (<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;Komplex v&iacute;rusovej leuk&eacute;mie ma&#269;iek (Leuk&eacute;mia ma&#269;iek, zau&#382;&iacute;van&aacute; skratka FeLV) je choroba vyvolan&aacute; v&iacute;rusom zo skupiny retrov&iacute;rov a sp&ocirc;sobuje u ma&#269;iek poruchu obranyschopnosti a n&aacute;dorov&eacute; bujnenie. Ide o n&aacute;kazliv&eacute; ochorenie zvy&#269;ajne kon&#269;iace smr&#357;ou.&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/felv\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">FeLV<\/a>) je retrov&iacute;rus pr&iacute;buzn&yacute; s v&iacute;rusom my&scaron;ej leuk&eacute;mie, ktor&yacute; existoval medzi div&yacute;mi ma&#269;kami u&#382; desa&#357;tis&iacute;ce rokov pred jeho objaven&iacute;m v roku 1964 (Jarrett a kol., 1964). Infekcia FeLV sa vyskytuje hlavne u ma&#269;iek mlad&scaron;&iacute;ch ako 3-8 rokov (Pedersen, 1998, 1991). Hlavn&yacute;m zdrojom infekcie s&uacute; ma&#269;ky v asymptomatickom &scaron;t&aacute;diu infekcie. V&iacute;rus sa vylu&#269;uje vo v&scaron;etk&yacute;ch v&yacute;lu&#269;koch a telesn&yacute;ch sekr&eacute;toch a &scaron;&iacute;ri sa bl&iacute;zkym kontaktom (Pedersen a kol., 1977). Infekcia FeLV sa v pr&iacute;rode zvy&#269;ajne vyskytuje potom, &#269;o s&uacute; ma&#269;ky dostato&#269;ne star&eacute; na to, aby sa mohli socializova&#357;, a prim&aacute;rna f&aacute;za infekcie je bu&#271; bezpr&iacute;znakov&aacute;, alebo prechodn&aacute; a kon&#269;&iacute; dlhotrvaj&uacute;cou imunitnou reakciou u 95% alebo viac ma&#269;iek. Iba mal&aacute; &#269;as&#357; infekci&iacute; v pr&iacute;rode vedie k chronickej vir&eacute;mii. Ochorenia spojen&eacute; s FeLV sa vyskytuj&uacute; preva&#382;ne u malej skupiny ma&#269;iek s pretrv&aacute;vaj&uacute;cou infekciou.<br>Ochorenie FeLV u div&yacute;ch ma&#269;iek nevyvolalo pred jeho objaven&iacute;m zv&yacute;&scaron;en&yacute; z&aacute;ujem a ak&aacute;ko&#318;vek s&uacute;visiaca &uacute;mrtnos&#357; zostala medzi spektrom chor&ocirc;b, ktor&eacute; postihuj&uacute; div&eacute; ma&#269;ky, nepov&scaron;imnut&aacute;. To, &#269;o vieme o patogen&eacute;ze infekcie FeLV u divok&yacute;ch ma&#269;iek, preto p&ocirc;vodne poch&aacute;dzalo zo &scaron;t&uacute;di&iacute; uskuto&#269;nen&yacute;ch v 70. a 80. rokoch na skupin&aacute;ch dom&aacute;cich ma&#269;iek a laborat&oacute;rnych infekci&aacute;ch (preh&#318;ad Pedersen, 1998, 1991).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Epizootiol&oacute;gia <\/strong>&ndash; zd&aacute; sa, &#382;e FeLV nepozorovane prest&uacute;pila z pr&iacute;rody do popul&aacute;cie dom&aacute;cich ma&#269;iek niekedy pred 60. rokmi 20. storo&#269;ia a odvtedy do&scaron;lo k rap&iacute;dnemu n&aacute;rastu incidencie. Prv&eacute; n&aacute;znaky, &#382;e by za touto chorobou mohol st&aacute;&#357; v&iacute;rus, pri&scaron;li v roku 1964 s identifik&aacute;ciou intracelul&aacute;rnych &#269;ast&iacute;c pripom&iacute;naj&uacute;cich v&iacute;rus my&scaron;ej leuk&eacute;mie v dom&aacute;cnosti ma&#269;iek s viacer&yacute;mi pr&iacute;padmi lymfosark&oacute;mu (Jarrett a kol., 1964). Na&scaron;e ch&aacute;panie z&aacute;va&#382;nosti infekcie FeLV a jej vz&#357;ahu k chorob&aacute;m in&yacute;m ako lymfosark&oacute;m sa za&#269;alo v roku 1969 vo v&yacute;skumn&yacute;ch laborat&oacute;ri&aacute;ch (Hardy a kol., 1969). Hlavn&eacute; spektrum chor&ocirc;b s&uacute;visiacich s FeLV vzi&scaron;lo z komer&#269;nej aplik&aacute;cie nepriameho fluorescen&#269;n&eacute;ho testu protil&aacute;tok (IFA) na detekciu viremick&yacute;ch ma&#269;iek, po&#269;n&uacute;c rokom 1972 (Hardy, 1973; Hardy a Zuckerman, 1991). Nasledovali r&yacute;chle dom&aacute;ce testy FeLV zalo&#382;en&eacute; na ELISA (Lutz a kol., 1979).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">FeLV bola retrospekt&iacute;ne identifikovan&aacute; ako hlavn&aacute; pr&iacute;&#269;ina ochoren&iacute; dom&aacute;cich ma&#269;iek v 60. rokoch a prospekt&iacute;vne v 70. a 80. rokoch. &#268;o sp&ocirc;sobilo panzootiu infekcie FeLV a chor&ocirc;b u dom&aacute;cich ma&#269;iek? Ako sa nesk&ocirc;r zistilo, &#269;lovekom riaden&eacute; prostredie s po&#269;etnou popul&aacute;ciou ma&#269;iek, najm&auml; kde boli mlad&eacute; ma&#269;iatka v kontakte so star&scaron;&iacute;mi infikovan&yacute;mi ma&#269;iatkami a ma&#269;kami, sa uk&aacute;zalo ako ide&aacute;lne pre prenos z ma&#269;ky na ma&#269;ku. Z&aacute;va&#382;nos&#357; t&yacute;chto expoz&iacute;ci&iacute; spolu s mlad&yacute;m vekom (Hoover et al., 1976) a in&yacute;mi stresov&yacute;mi faktormi prostredia v&yacute;razne zv&yacute;&scaron;il v&yacute;skyt pretrv&aacute;vaj&uacute;cich infekci&iacute; oproti prechodn&yacute;m infekci&aacute;m (Pedersen a kol., 1977). Zatia&#318; &#269;o iba mal&eacute; percento ma&#269;iek v pr&iacute;rode sa st&aacute;va trvale viremick&yacute;ch, u tretiny alebo viac ma&#269;iek exponovan&yacute;ch v kontrolovanom laborat&oacute;rnom prostred&iacute; sa vyvinula perzistentn&aacute; vir&eacute;mia.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Koniec panzootie FeLV nastal s rozsiahlym &bdquo;testovan&iacute;m a odde&#318;ovan&iacute;m&ldquo; viremick&yacute;ch ma&#269;iek, ako dokumentuj&uacute; Weijer a kolegovia (1986). Testovanie a odde&#318;ovanie boli nesk&ocirc;r doplnen&eacute; &uacute;&#269;inn&yacute;mi vakc&iacute;nami. Je pozoruhodn&eacute;, &#382;e infekcia FeLV u&#382; nie je hlavnou pr&iacute;&#269;inou ochoren&iacute; v dom&aacute;cnostiach s mnohopo&#269;etn&yacute;m v&yacute;skytom ma&#269;iek. Op&auml;&#357; existuje ako pr&iacute;rodn&aacute; infekcia, s pozitivitou iba u 1-5% divok&yacute;ch ma&#269;iek. Nieko&#318;ko viremick&yacute;ch ma&#269;iek, najm&auml; mlad&scaron;&iacute;ch, sa v&scaron;ak na&#271;alej objavuje medzi ma&#269;kami premiestnen&yacute;mi z pr&iacute;rody do prostredia &uacute;tulkov a do&#269;asn&yacute;ch domovov.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Patogen&eacute;za <\/strong>&ndash; prim&aacute;rna infekcia FeLV je svojou povahou do zna&#269;nej miery nev&yacute;razn&aacute; a ukon&#269;en&aacute; silnou imunitnou odpove&#271;ou a celo&#382;ivotnou <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;Imunita v imunologii ozna&#269;uje schopnost organismu br&aacute;nit se proti antigen&#367;m poch&aacute;zej&iacute;c&iacute;m jak z vn&#283;j&scaron;&iacute;ho prost&#345;ed&iacute;, tak z prost&#345;ed&iacute; z pohledu organismu vnit&#345;n&iacute;ho. V praxi se antigeny mysl&iacute; zejm&eacute;na bu&#328;ky patogenn&iacute;ch organizm&#367;, viry &#269;i t&#345;eba n&aacute;dorov&eacute; bu&#328;ky.&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/imunita\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">imunitou<\/a> (preh&#318;ad Pedersen, 1991). Ak je v&scaron;ak rozsah expoz&iacute;cie dostato&#269;ne ve&#318;k&yacute; a\/alebo je nejak&yacute;m sp&ocirc;sobom zn&iacute;&#382;en&aacute; imunita ma&#269;ky, m&ocirc;&#382;e d&ocirc;js&#357; k prim&aacute;rnemu a prechodn&eacute;mu ochoreniu. T&aacute;to f&aacute;za sa m&ocirc;&#382;e prejavi&#357; hor&uacute;&#269;kou, generalizovanou lymfadenopatiou, n&iacute;zkym po&#269;tom krvn&yacute;ch do&scaron;ti&#269;iek a <a class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;&amp;lt;!-- wp:paragraph --&amp;gt;Leukocyt je biela krvinka, bezfarebn&aacute; gu&#318;ovit&aacute; bunka, ktor&aacute; v&#382;dy obsahuje jadro. Jej hlavnou &uacute;lohou je sprostredkovanie imunitnej odpovedi, z&uacute;&#269;ast&#328;uje sa na obrann&yacute;ch a metabolick&yacute;ch pochodoch organizmu. Z morfologick&eacute;ho h&#318;adiska sa rozde&#318;uje pod&#318;a pr&iacute;tomnosti &scaron;pecifick&yacute;ch gran&uacute;l v cytoplazme na granulocyty, ktor&eacute; maj&uacute; &#269;lenen&eacute; jadro - neutrofiln&eacute;, eozinofiln&eacute; a bazofiln&eacute;, a na agranulocyty - monocyty, lymfocyty. N&aacute;zov z gr&eacute;&#269;tiny: leukos = biely.&amp;lt;br\/&amp;gt;&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\"  href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/leukocyt\/\"  data-mobile-support=\"0\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex='0' role='link'>WBC<\/a> a miernou an&eacute;miou. Po tomto &scaron;t&aacute;diu &#269;asto nasleduje dlhotrvaj&uacute;ca a do zna&#269;nej miery bezpr&iacute;znakov&aacute; vir&eacute;mia trvaj&uacute;ca mesiace a roky. U ma&#269;iek s pretrv&aacute;vaj&uacute;cou infekciou FeLV sa nakoniec vyvinie nieko&#318;ko prim&aacute;rnych a sekund&aacute;rnych chor&ocirc;b, ktor&eacute; s&uacute; zvy&#269;ajne smrte&#318;n&eacute;. Zvy&#269;ajn&yacute; odhad &uacute;mrtnosti u viremick&yacute;ch ma&#269;iek je okolo 50% ro&#269;ne (Pedersen, 1988), &#269;o znamen&aacute;, &#382;e po troch rokoch zostane na&#382;ive iba 12,5% z nich. Preto&#382;e infekcia v pr&iacute;rode sa vyskytuje hlavne u mlad&scaron;&iacute;ch ma&#269;iek a v&auml;&#269;&scaron;ina z nich uhynie do 3 rokov, v pr&iacute;rode sa u ma&#269;iek star&scaron;&iacute;ch ako 5-8 rokov pozoruje len m&aacute;lo pr&iacute;padov infekcie FeLV.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Prim&aacute;rne choroby FeLV s&uacute; spojen&eacute; s r&ocirc;znymi mutantami infikuj&uacute;ceho kme&#328;a a zah&#341;&#328;aj&uacute; aplastick&uacute; an&eacute;miu, r&ocirc;zne myeloproliferat&iacute;vne poruchy a lymf&oacute;m, ktor&yacute; je zvy&#269;ajne generalizovan&yacute;, o&#269;n&yacute; alebo neurologick&yacute; (zhrnutie Pedersen 1988, 1991). Sekund&aacute;rne ochorenie spojen&eacute; s FeLV je sp&ocirc;soben&eacute; nieko&#318;k&yacute;mi be&#382;n&yacute;mi infek&#269;n&yacute;mi agensmi ma&#269;iek, ktor&eacute; zvy&#269;ajne nie s&uacute; ve&#318;mi patog&eacute;nne, ale ktor&eacute; sa zosil&#328;uj&uacute; potla&#269;en&iacute;m imunity T-<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;&amp;lt;strong&amp;gt;Lymfocyt&amp;lt;\/strong&amp;gt; &ndash; druh b&iacute;l&eacute; krvinky, kter&yacute; se v&yacute;znamn&#283; pod&iacute;l&iacute; na specifick&eacute; imunit&#283; organismu. L. se vyskytuj&iacute; v krvi a v lymfatick&eacute; tk&aacute;ni a d&#283;l&iacute; se na dv&#283; z&aacute;kladn&iacute; skupiny T a B lymfocyty n&#283;kdy se u&#382;&iacute;v&aacute; n&aacute;zvu T a B bu&#328;ky. K funkc&iacute;m T lymfocyt&#367; pat&#345;&iacute; regulace ostatn&iacute;ch bun&#283;k z&uacute;&#269;astn&#283;n&yacute;ch na imunitn&iacute; odpov&#283;di a likvidace choroboplodn&yacute;ch z&aacute;rodk&#367;, pop&#345;. i vlastn&iacute;ch bun&#283;k jimi naka&#382;en&yacute;ch a n&aacute;dor&#367;. B lymfocyty se po setk&aacute;n&iacute; s antigenem a za p&#345;isp&#283;n&iacute; skupiny T lymfocyt&#367; p&#345;em&#283;&#328;uj&iacute; na plasmatick&eacute; bu&#328;ky, kter&eacute; tvo&#345;&iacute; protil&aacute;tky imunoglobuliny. L. p&#345;e&#382;&iacute;vaj&iacute; v organismu dlouhou dobu a tvo&#345;&iacute; tzv. pam&#283;&#357;ov&eacute; bu&#328;ky, kter&eacute; si &amp;quot;pamatuj&iacute;&amp;quot; setk&aacute;n&iacute; s cizorodou l&aacute;tkou antigenem a jsou proti n&iacute; schopny op&#283;t reagovat na tomto principu funguje o&#269;kov&aacute;n&iacute;. P&#345;i v&#283;t&scaron;in&#283; sv&yacute;ch funkc&iacute; spolupracuj&iacute; s makrof&aacute;gy srov. APC, p&#345;i&#269;em&#382; vz&aacute;jemnou komunikaci zprost&#345;edkov&aacute;vaj&iacute; mj. HLA antigeny.&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/lymfocytov\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">lymfocytov<\/a> spojenej s FeLV.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>S&uacute;vislos&#357; infekcie FeLV a <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;Infek&#269;n&aacute; peritonit&iacute;da ma&#269;iek (angl. Feline infectious peritonitis, zau&#382;&iacute;van&aacute; skratka FIP) je infek&#269;n&eacute; ochorenie ma&#269;iek sp&ocirc;sobuj&uacute;ce smr&#357;. N&aacute;zov je mierne zav&aacute;dzaj&uacute;ci, preto&#382;e nejde o z&aacute;pal pobru&scaron;nice (&#269;i&#382;e peritonea), ale o z&aacute;pal ciev (vaskulit&iacute;da). Klinick&eacute; pr&iacute;znaky FIP sa v&scaron;ak &#269;asto prejavuj&uacute; vo forme z&aacute;palu pobru&scaron;nice. V&iacute;rus FIP nap&aacute;da v&scaron;ak aj pohrudnicu &ndash; z toho d&ocirc;vodu je niekedy choroba ozna&#269;ovan&aacute; tie&#382; ako Infek&#269;n&aacute; ma&#269;acia polyserozit&iacute;da (Feline infectious polyserositis).&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/fip\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">FIP<\/a><\/strong> &ndash; Zistilo sa, &#382;e jedna tretina a&#382; polovica ma&#269;iek s FIP po&#269;as 70. a 80. rokov bola infikovan&aacute; FeLV (Cotter a kol., 1973; Pedersen a kol., 1977). Spojenie medzi t&yacute;mito dvoma infekciami sa uk&aacute;zalo, ke&#271; boli mlad&eacute; laborat&oacute;rne ma&#269;ky s infekciou enzootick&yacute;m ma&#269;ac&iacute;m enterick&yacute;m koronav&iacute;rusom (FECV) chovan&eacute; spolu  s nosi&#269;mi FeLV (Pedersen a kol., 1977). Ke&#271; sa tieto mlad&eacute; ma&#269;ky trvale infikovali FeLV, za&#269;ali sa zvy&scaron;ova&#357; ich titre koronav&iacute;rusov&yacute;ch protil&aacute;tok a behom nieko&#318;k&yacute;ch t&yacute;&#382;d&#328;ov alebo mesiacov sa objavili klinick&eacute; pr&iacute;znaky FIP. FIP sa vyskytla iba u jednej tretiny ma&#269;iek s vir&eacute;miou FeLV, a u dvoch tret&iacute;n ma&#269;iek, ktor&eacute; sa stali imunn&yacute;mi vo&#269;i FeLV, sa nezistili &#382;iadne pr&iacute;pady FIP. V neskor&scaron;ej &scaron;t&uacute;dii boli ma&#269;ky chronicky infikovan&eacute; laborat&oacute;rnym kme&#328;om v&iacute;rusu ma&#269;acej imunodeficiencie (<a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;V&iacute;rusov&aacute; imunodeficiencia ma&#269;iek (aj Syndr&oacute;m z&iacute;skanej straty imunity, hovorovo Ma&#269;ac&iacute; AIDS, zau&#382;&iacute;van&aacute; skratka FIV, po anglicky Feline Acquired Immune Deficiency Syndrome &ndash; FAIDS) je infek&#269;n&aacute; choroba postihuj&uacute;ca ma&#269;ky.&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/fiv\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">FIV<\/a>) experiment&aacute;lne infikovan&eacute; FECV (Poland a kol., 1996). U dvoch z 19 ma&#269;iek v chronickom imunosupres&iacute;vnom &scaron;t&aacute;diu infekcie FIV sa vyvinula FIP, zatia&#318; &#269;o &#382;iadna z 20 FIV neinfikovan&yacute;ch &bdquo;spolub&yacute;vaj&uacute;cich&ldquo; neochorela. &Scaron;t&uacute;die podobn&eacute; tejto s imunosupresiou FeLV a FIV boli d&ocirc;le&#382;it&eacute; pre z&aacute;ver, &#382;e v&iacute;rus FIP (FIPV) bol be&#382;ne sa vyskytuj&uacute;cim mutantom FECV a minim&aacute;lnym patog&eacute;nom u zdrav&yacute;ch imunokompetentn&yacute;ch ma&#269;iek.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>&#268;o znamen&aacute; infekcia FeLV pre lie&#269;bu FIP?<\/strong> Prizn&aacute;vam sa, &#382;e nie som z&aacute;stancom lie&#269;by FIP u ma&#269;iek pozit&iacute;vnych na FeLV. Vieme, &#382;e infekcia FeLV indukuje typ imunosupresie, ktor&yacute; vedie k rozvoju FIP. M&aacute;m tie&#382; podozrenie, &#382;e &uacute;spe&scaron;n&aacute; lie&#269;ba FIP antivirotikami, ako je GS-441524, spo&#269;&iacute;va v obnoven&iacute; ochrannej imunitnej odpovede na FIPV. Ak je to pravda, FeLV indukovan&aacute; imunosupresia m&ocirc;&#382;e interferova&#357; s imunitou FIPV a zni&#382;ova&#357; mieru vylie&#269;enia pri lie&#269;be GS alebo interferova&#357; s akouko&#318;vek dlhodobou ochrannou imunitou vyvolanou &uacute;spe&scaron;nou antiv&iacute;rusovou lie&#269;bou. Je potrebn&eacute; vzia&#357; do &uacute;vahy &#271;al&scaron;ie dva probl&eacute;my s lie&#269;en&iacute;m tak&yacute;chto ma&#269;iek. Chov ma&#269;iek infikovan&yacute;ch FeLV sp&ocirc;sobuje finan&#269;n&eacute; a fyzick&eacute; &#357;a&#382;kosti, pokia&#318; ide o rutinn&uacute; veterin&aacute;rnu starostlivos&#357; a karant&eacute;nu n&aacute;chyln&yacute;ch ma&#269;iek. Je tie&#382; zn&aacute;me, &#382;e iba 10% ma&#269;iek infikovan&yacute;ch FeLV pre&#382;ije dlh&scaron;ie ako tri roky. Tieto fakty vyvol&aacute;vaj&uacute; ot&aacute;zky oh&#318;adne najlep&scaron;ieho vyu&#382;&iacute;vania prostriedkov do&#269;asn&yacute;ch\/z&aacute;chrann&yacute;ch skup&iacute;n a jednotlivcov &ndash; na ma&#269;ky iba s FIP, ma&#269;ky s in&yacute;m lie&#269;ite&#318;n&yacute;m ochoren&iacute;m alebo na zdrav&eacute; ma&#269;ky &#269;akaj&uacute;ce na domov?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Z&aacute;ver <\/strong>&ndash; Je nepravdepodobn&eacute;, &#382;e by sa pest&uacute;ni\/z&aacute;chran&aacute;ri rozhodli nelie&#269;i&#357; FIP u FeLV pozit&iacute;vnych ma&#269;iek. Rozhodnutie lie&#269;i&#357; FIP u tak&yacute;chto ma&#269;iek v&scaron;ak mus&iacute; v prvom rade vych&aacute;dza&#357; z presnosti po&#269;iato&#269;n&eacute;ho testu FeLV. Asi 5 zo 100 pozit&iacute;vnych in-house testov FeLV ELISA u zdravej popul&aacute;cie ma&#269;iek bude falo&scaron;ne pozit&iacute;vnych. Ak je v&yacute;skyt FeLV v popul&aacute;cii ma&#269;iek poch&aacute;dzaj&uacute;cich z ulice 1%, falo&scaron;ne pozit&iacute;vne v&yacute;sledky bud&uacute; p&auml;&#357;kr&aacute;t &#269;astej&scaron;ie ako skuto&#269;n&eacute; pozitivity. Preto je d&ocirc;le&#382;it&eacute;, aby boli pozit&iacute;vne testy ELISA potvrden&eacute; &#271;al&scaron;&iacute;m testom, ako je PCR. Majitelia by sa mali v&#382;dy, ke&#271; je to mo&#382;n&eacute;, uisti&#357;, &#382;e tieto ma&#269;ky nemaj&uacute; in&eacute; choroby spojen&eacute; s FeLV, ako je aplastick&aacute; <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;&amp;lt;strong&amp;gt;Anemie&amp;lt;\/strong&amp;gt; &ndash; chudokrevnost. Onemocn&#283;n&iacute;, p&#345;i n&#283;m&#382; je v krvi sn&iacute;&#382;eno mno&#382;stv&iacute; krevn&iacute;ho barviva hemoglobinu a &#269;erven&yacute;ch krvinek erytrocyt&#367;. Vede k omezen&iacute; p&#345;enosu kysl&iacute;ku, kter&yacute; je nezbytn&yacute; pro v&scaron;echny tk&aacute;n&#283; organismu.&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/anemia\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">an&eacute;mia<\/a>, lymf&oacute;m alebo myeloproliferat&iacute;vne poruchy. Majitelia ma&#269;iek, ktor&iacute; sa rozhodn&uacute; pre lie&#269;bu GS, by sa tie&#382; mali podeli&#357; o kr&aacute;tkodob&eacute; a dlhodob&eacute; v&yacute;sledky svojho &uacute;silia, aby bolo mo&#382;n&eacute; v tejto skupine FIP z&iacute;ska&#357; lep&scaron;iu progn&oacute;zu.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Referencie<\/strong><\/p>\n\n\n\n<ul class=\"has-small-font-size wp-block-list\"><li>Cotter SM, Gillmore CE, Rollins C. 1973. Multiple cases of feline leukemia and feline infectious peritonitis in a household. <em>J Am Vet Med Assoc<\/em> 162:1054-1058.<\/li><li>Hardy WD Jr., et al. Feline leukemia virus: occurrences of viral <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;&amp;lt;!-- wp:paragraph --&amp;gt;&amp;lt;strong&amp;gt;Antigen&amp;lt;\/strong&amp;gt;&nbsp;je l&aacute;tka, kter&aacute; navozuje produkci jedn&eacute; nebo v&iacute;ce&nbsp;protil&aacute;tek. Ka&#382;d&aacute; protil&aacute;tka se v&aacute;&#382;e na specifick&yacute; antigen formou interakce podobn&eacute; zapadnut&iacute; kl&iacute;&#269;e do z&aacute;mku. Antigen m&#367;&#382;e b&yacute;t z vn&#283;j&scaron;&iacute;ho prost&#345;ed&iacute; nebo vznik&aacute; v t&#283;le. Bu&#328;ky imunitn&iacute;ho syst&eacute;mu se sna&#382;&iacute; zni&#269;it nebo neutralizovat jak&yacute;koli antigen, kter&yacute; je rozpozn&aacute;n jako ciz&iacute; a potenci&aacute;ln&#283; &scaron;kodliv&yacute;. Slovo &amp;quot;antigen&amp;quot; vzniklo z term&iacute;nu&nbsp;&amp;lt;strong&amp;gt;anti&amp;lt;\/strong&amp;gt;body&nbsp;&amp;lt;strong&amp;gt;gen&amp;lt;\/strong&amp;gt;erator&amp;lt;sup&amp;gt;[1][2]&amp;lt;\/sup&amp;gt;&nbsp;a popisovalo molekulu, kter&aacute; se specificky v&aacute;&#382;e na protil&aacute;tku. Nyn&iacute; se ale term&iacute;n vztahuje i na v&scaron;echny molekuly nebo molekul&aacute;rn&iacute; fragmenty, kter&eacute; mohou b&yacute;t v&aacute;z&aacute;ny&nbsp;hlavn&iacute;m histokompatibiln&iacute;m komplexem&nbsp;(MHC) a prezentov&aacute;ny T-bun&#283;&#269;n&eacute;mu receptoru.&amp;lt;sup&amp;gt;[3]&amp;lt;\/sup&amp;gt;&nbsp;Vlastn&iacute; antigeny jsou obvykle imunitn&iacute;m syst&eacute;mem tolerov&aacute;ny, zat&iacute;mco ciz&iacute; antigeny jsou identifikov&aacute;ny jako potenci&aacute;ln&#283; nebezpe&#269;n&eacute; a mohou b&yacute;t imunitn&iacute;m syst&eacute;mem napadeny.&amp;lt;br\/&amp;gt;&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/antigen\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">antigen<\/a> in the tissues of cats with lymphosarcoma and other diseases.<em> Science<\/em> 1969, 166:1019-1021.&nbsp;<\/li><li>Hardy WD Jr. Horizontal transmission of feline leukemia virus in cats. <em>Nature <\/em>1973, 244:266269.&nbsp;<\/li><li>Hardy WD Jr, Zuckerman EE. Ten-year study comparing enzyme-linked immunosorbent assay with the immunofluorescent antibody test for detection of feline leukemia virus infection in cats. <em>J Am Vet Med Assoc<\/em>. 1991, 199:1365-73.<\/li><li>Hoover EA, et al. Feline leukemia virus infection: Age-related variation in response of cats to experimental infection. <em>J Natl Cancer Inst<\/em>. 1976, 57:365-369.&nbsp;<\/li><li>Jarrett WFH, et al., Leukemia in the cat. A virus-like particle associated with leukemia (lymphosarcoma). <em>Nature<\/em> 1964, 202:567-56.<\/li><li>Lutz H, et al. The Demonstration of Antibody Specificity by a New Technique. The Gel<\/li><li>Electrophoresis-Derived Enzyme-Linked Immunosorbent Assay (GEDELISA) and its Application to Antibodies Specific for Feline Leukemia Virus.&nbsp; J Histochem Cytochem. 1979, 27:1216-1218.<\/li><li>Pedersen NC. <em>Feline Infectious Diseases.<\/em> American Veterinary Publications, Inc., Goleta, CA, USA, 1988. &nbsp;<\/li><li>Pedersen NC. Feline leukemia virus infection. In: <em>Feline Husbandry. Disease and management in the multiple-cat environments.<\/em> American Veterinary Publications, Inc., Goleta, CA, USA, 1991, pp210-228.&nbsp;<\/li><li>Pedersen NC, Theilen G, Keane MA, Fairbanks L, Mason T, Orser B, Che CH, Allison C. 1977. Studies of naturally transmitted feline leukemia virus infection. Am J Vet Res 38:1523-31.<\/li><li>Poland AM, Vennema H, Foley JE, Pedersen NC. 1996. Two related strains of feline infectious peritonitis virus isolated from immunocompromised cats infected with feline enteric coronavirus. J Clin Micro 34:3180-3184. Weijer K, de Haag U, Osterhaus A. 1986. Control of feline leukemia virus infection by a removal programme. Vet Rec, 119, 555-556.<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Niels C. Pedersen, DVM, PhD ? A short article discussing FeLV infection and its association with FIP.<\/p>","protected":false},"author":1,"featured_media":7533,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[191,188,190,1],"tags":[],"class_list":["post-7520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dr-pedersen","category-preverejnost","category-preklady","category-genart"],"featured_image_urls_v2":{"full":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV.jpg",1920,960,false],"thumbnail":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-150x150.jpg",150,150,true],"medium":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-300x150.jpg",300,150,true],"medium_large":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-768x384.jpg",525,263,true],"large":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-1024x512.jpg",525,263,true],"1536x1536":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-1536x768.jpg",1536,768,true],"2048x2048":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV.jpg",1920,960,false],"trp-custom-language-flag":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-16x8.jpg",16,8,true],"twentyseventeen-featured-image":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV.jpg",1920,960,false],"twentyseventeen-thumbnail-avatar":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-100x100.jpg",100,100,true],"woocommerce_thumbnail":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-250x250.jpg",250,250,true],"woocommerce_single":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-350x175.jpg",350,175,true],"woocommerce_gallery_thumbnail":["https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV-100x100.jpg",100,100,true]},"post_excerpt_stackable_v2":"<p>Niels C. Pedersen, DVM, PhD ? Kr&aacute;tky &#269;l&aacute;nok pojedn&aacute;vaj&uacute;ci o infekcii <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;Komplex v&iacute;rusovej leuk&eacute;mie ma&#269;iek (Leuk&eacute;mia ma&#269;iek, zau&#382;&iacute;van&aacute; skratka FeLV) je choroba vyvolan&aacute; v&iacute;rusom zo skupiny retrov&iacute;rov a sp&ocirc;sobuje u ma&#269;iek poruchu obranyschopnosti a n&aacute;dorov&eacute; bujnenie. Ide o n&aacute;kazliv&eacute; ochorenie zvy&#269;ajne kon&#269;iace smr&#357;ou.&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/felv\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">FeLV<\/a> a jej s&uacute;vislosti s <a class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemBody&gt;Infek&#269;n&aacute; peritonit&iacute;da ma&#269;iek (angl. Feline infectious peritonitis, zau&#382;&iacute;van&aacute; skratka FIP) je infek&#269;n&eacute; ochorenie ma&#269;iek sp&ocirc;sobuj&uacute;ce smr&#357;. N&aacute;zov je mierne zav&aacute;dzaj&uacute;ci, preto&#382;e nejde o z&aacute;pal pobru&scaron;nice (&#269;i&#382;e peritonea), ale o z&aacute;pal ciev (vaskulit&iacute;da). Klinick&eacute; pr&iacute;znaky FIP sa v&scaron;ak &#269;asto prejavuj&uacute; vo forme z&aacute;palu pobru&scaron;nice. V&iacute;rus FIP nap&aacute;da v&scaron;ak aj pohrudnicu &ndash; z toho d&ocirc;vodu je niekedy choroba ozna&#269;ovan&aacute; tie&#382; ako Infek&#269;n&aacute; ma&#269;acia polyserozit&iacute;da (Feline infectious polyserositis).&lt;\/div&gt;\" href=\"https:\/\/www.fipwarriors.eu\/en\/glossary\/fip\/\" data-mobile-support=\"0\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]' tabindex=\"0\" role=\"link\">FIP<\/a>.<\/p>\n","category_list_v2":"<a href=\"https:\/\/www.fipwarriors.eu\/en\/category\/dr-pedersen\/\" rel=\"category tag\">Dr. Pedersen<\/a>, <a href=\"https:\/\/www.fipwarriors.eu\/en\/category\/preverejnost\/\" rel=\"category tag\">Pre verejnos\u0165<\/a>, <a href=\"https:\/\/www.fipwarriors.eu\/en\/category\/preklady\/\" rel=\"category tag\">Preklady<\/a>, <a href=\"https:\/\/www.fipwarriors.eu\/en\/category\/genart\/\" rel=\"category tag\">V\u0161eobecn\u00e9 \u010dl\u00e1nky<\/a>","author_info_v2":{"name":"LM","url":"https:\/\/www.fipwarriors.eu\/en\/author\/starman\/"},"comments_num_v2":"0 comments","featured_image_src":"https:\/\/www.fipwarriors.eu\/wp-content\/uploads\/2021\/05\/catFeLV.jpg","author_info":{"display_name":"L. M.","author_link":"https:\/\/www.fipwarriors.eu\/en\/author\/starman\/"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Infekcia FeLV a jej vz\u0165ah k FIP - FIP Warriors CZ\/SK \u00ae<\/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.fipwarriors.eu\/en\/infekcia-felv-a-jej-vztah-k-fip\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Infekcia FeLV a jej vz\u0165ah k FIP - FIP Warriors CZ\/SK \u00ae\" \/>\n<meta property=\"og:description\" content=\"Niels C. Pedersen, DVM, PhD ? 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