<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2176-6223</journal-id>
<journal-title><![CDATA[Revista Pan-Amazônica de Saúde]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Pan-Amaz Saude]]></abbrev-journal-title>
<issn>2176-6223</issn>
<publisher>
<publisher-name><![CDATA[Instituto Evandro Chagas. Secretaria de Vigilância em Saúde e Ambiente. Ministério da Saúde]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2176-62232011000300005</article-id>
<article-id pub-id-type="doi">10.5123/S2176-62232011000300005</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Capillaria hepatica (Bancroft, 1893) (Nematoda) entre populações indígenas e mamíferos silvestres no noroeste do Estado do Mato Grosso, Brasil, 2000]]></article-title>
<article-title xml:lang="en"><![CDATA[Capillaria hepatica (Bancroft, 1893) (Nematoda) among indigenous populations and wild mammals in the northwest of Mato Grosso State, Brazil, 2000]]></article-title>
<article-title xml:lang="es"><![CDATA[Capillaria hepatica (Bancroft, 1893) (Nematodo) entre poblaciones indígenas y mamíferos silvestres en el noroeste del Estado de Mato Grosso, Brasil, 2000]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soares]]></surname>
<given-names><![CDATA[Manoel do Carmo Pereira]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nunes]]></surname>
<given-names><![CDATA[Heloisa Marceliano]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Silveira]]></surname>
<given-names><![CDATA[Fernando Antonio Alves da]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alves]]></surname>
<given-names><![CDATA[Max Moreira]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Souza]]></surname>
<given-names><![CDATA[Alex Junior Souza de]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Evandro Chagas (IEC/SVS/MS) Seção de Hepatologia ]]></institution>
<addr-line><![CDATA[Belém Pará]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Instituto Evandro Chagas (IEC/SVS/MS) Seção de Hepatologia ]]></institution>
<addr-line><![CDATA[Belém Pará]]></addr-line>
<country>Brasil</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2011</year>
</pub-date>
<volume>2</volume>
<numero>3</numero>
<fpage>35</fpage>
<lpage>40</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_arttext&amp;pid=S2176-62232011000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_abstract&amp;pid=S2176-62232011000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.iec.gov.br/scielo.php?script=sci_pdf&amp;pid=S2176-62232011000300005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Capillaria hepatica é um nematoide hepatotrópico capaz de infectar roedores e outros mamíferos. Em virtude da identificação de ovos deste helminto em amostras de fezes de indígenas do noroeste do Mato Grosso, no ano 2000, foi realizado inquérito coproparasitológico nas fezes de 477 (76,6%) dos 622 indígenas de seis aldeias (Mamaindé, Kithãulu, Camararé, Negatoré, Nambiquara e Wassussu) situadas nos vales dos rios Guaporé e Nambiquara, noroeste do Estado do Mato Grosso. Amostras de fígado de animais silvestres utilizados como fonte alimentar por estes indígenas também foram coletadas para avaliação histopatológica e parasitológica. Os resultados indicaram a presença de ovos de C. hepatica nas fezes de 8,6% (41/477) dos indígenas e de protozoários e outros helmintos enteroparasitas entre as amostras testadas. Ovos de C. hepatica também foram identificados no fígado de Tayassu pecari (queixada) e Ateies paniscus (macaco-aranha). A eliminação fecal de ovos de C. hepatica entre os indígenas representou infecções espúrias e foi associada ao consumo de vísceras de animais silvestres, considerados como reservatórios do helminto na área. Estudos clínico-epidemiológicos complementares devem ser desenvolvidos na região em virtude do potencial zoonótico do parasita em causar infecções genuínas de capilaríase hepática.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Capillaria hepatica is a hepatotropic nematode that infects rodents and other mammals. In 2000, eggs of this helminth were identified in stool samples from the indigenous population in Northwestern Mato Grosso, Brazil. A parasitological survey was conducted in stool samples from 477 (76.6%) out of 622 Indians from six villages (Mamaindé, Kithaulu, Camararé, Negatoré, Nambiquara and Wassussu) located in the valleys of the Guaporé and Nambiquara rivers. Liver samples from wild animals were used by these Indians as a food source and were collected for histopathological and parasitological assessment. The results revealed the presence of C. hepatica eggs in the stool samples from 8.6% (41/477) of the individuals and revealed enteric parasitic protozoa and other helminths. Eggs of C. hepatica were also found in the livers of Tayassu pecari (white-lipped peccary) and Ateles paniscus (black spider monkey). The fecal elimination of C. hepatica eggs that was found among the Indians represented a spurious infection and was associated with the consumption of the viscera of wild animals that are considered to be reservoirs of C. hepatica in the investigated area. Additional clinical and epidemiological studies must be performed in this area because of the zoonotic potential of C. hepatica to cause hepatic capillariasis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Capillaria hepatica es un nematodo hepatotrópico capaz de infectar roedores y otros mamíferos. En virtud de la identificación de huevos de este helminto en muestras de heces de indígenas del noroeste de Mato Grosso, el año 2000, se realizó una investigación coproparasitaria en las heces de 477 (76,6%) de los 622 indígenas de seis aldeas (Mamaindé, Kithaulu, Camararé, Negatoré, Nambiquara y Wassussu) situadas en los valles de los ríos Guaporé y Nambiquara, noroeste del Estado de Mato Grosso. También se colectaron muestras, para evaluación histopatológica y parasitaria, de hígados de animales silvestres utilizados como fuente alimentar por estos indígenas. Los resultados indicaron la presencia de huevos de C. hepatica en las heces de 8,6% (41/477) de los indígenas y de protozoarios y otros helmintos enteroparásitos entre las muestras analizadas. Huevos de C. hepatica también fueron identificados en el hígado de Tayassu pecari (pecarí barbiblanco) y Ateles paniscus (mono araña). La eliminación fecal de huevos de C. hepatica entre los indígenas representó infecciones espurias y fue asociada al consumo de vísceras de animales silvestres, considerados como reservorios del helminto en el área. Estudios clínico-epidemiológicos complementarios deben ser desarrollados en la región, en virtud del potencial zoonótico del parásito en causar infecciones genuinas de capilariasis hepática.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Capillaria hepatica]]></kwd>
<kwd lng="pt"><![CDATA[Nematoda]]></kwd>
<kwd lng="pt"><![CDATA[helmintos]]></kwd>
<kwd lng="pt"><![CDATA[protozoários]]></kwd>
<kwd lng="pt"><![CDATA[população indígena]]></kwd>
<kwd lng="en"><![CDATA[Capillaria hepatica]]></kwd>
<kwd lng="en"><![CDATA[Nematoda]]></kwd>
<kwd lng="en"><![CDATA[Helminths]]></kwd>
<kwd lng="en"><![CDATA[protozoan]]></kwd>
<kwd lng="en"><![CDATA[Indigenous Population]]></kwd>
<kwd lng="es"><![CDATA[Capillaria hepatica]]></kwd>
<kwd lng="es"><![CDATA[Nematodo]]></kwd>
<kwd lng="es"><![CDATA[helmintos]]></kwd>
<kwd lng="es"><![CDATA[protozoarios]]></kwd>
<kwd lng="es"><![CDATA[población indígena]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2" face="Verdana"><b>ARTIGO ORIGINAL</b></font><font size="2" face="verdana"><b> |</b></font><font size="2" face="Verdana"><b>ORIGINAL ARTICLE </b></font><font size="2" face="verdana"><b>|</b></font><font size="2" face="Verdana"><b> ART&Iacute;CULO  ORIGINAL</b></font></p>     <p><font size="2" face="Verdana"><i>&nbsp;</i></font></p>     <p><font size="4" face="Verdana"><b><i><a name="topo"></a>Capillaria hepatica </i>(Bancroft, 1893) (Nematoda) entre popula&ccedil;&otilde;es ind&iacute;genas e mam&iacute;feros silvestres no noroeste do  Estado do Mato Grosso, Brasil, 2000</b></font></p>     <p>&nbsp;</p>     <p><b><font size="2" face="Verdana"><i><font size="3">Capillaria hepatica </font></i><font size="3">(Bancroft,  1893) (Nematoda) among indigenous populations and wild mammals in the northwest  of Mato Grosso State, Brazil, 2000</font></font></b></p>     <p>&nbsp;</p>     <p><font size="3"><b><font face="Verdana"><i>Capillaria hepatica </i>(Bancroft, 1893) (Nematodo) entre poblaciones ind&iacute;genas y mam&iacute;feros silvestres en el noroeste del  Estado de Mato Grosso,  Brasil, 2000</font></b></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana"><b>Manoel do Carmo Pereira  Soares<sup>I</sup>; Heloisa Marceliano Nunes<sup>I</sup>; Fernando Antonio Alves da Silveira<sup>I</sup>; Max Moreira Alves<sup>I</sup>; Alex Junior Souza de Souza<sup>II</sup></b></font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana"><sup>I</sup><i>Se&ccedil;&atilde;o de Hepatologia,  Instituto Evandro Chagas (IEC/SVS/MS), Bel&eacute;m,  Par&aacute;, Brasil</i>    <br> <sup>II</sup><i>Se&ccedil;&atilde;o de Hepatologia,  Instituto Evandro Chagas (IEC/SVS/MS), Bel&eacute;m, Par&aacute;, Brasil. Centro  de Ci&ecirc;ncias Biol&oacute;gicas e da Sa&uacute;de, Faculdades Integradas do Tapaj&oacute;s, Santar&eacute;m,  Par&aacute;, Brasil</i></font></p>     <p><font size="2" face="Verdana"><a href="#endereco">Endere&ccedil;o para correspond&ecirc;ncia</a></font><font size="2" face="Verdana"><a href="#endereco">    <br> Correspondence    <br> Direcci&oacute;n para correspondencia</a></font></p>     <p>&nbsp;</p>     <p>&nbsp;</p> <hr size="1" noshade>     <p><font size="2" face="Verdana"><b>RESUMO</b></font></p>     <p><font size="2" face="Verdana"><i>Capillaria hepatica </i>&eacute; um nematoide hepatotr&oacute;pico capaz de infectar roedores  e outros mam&iacute;feros.  Em virtude da identifica&ccedil;&atilde;o de ovos deste helminto em amostras de fezes de ind&iacute;genas  do noroeste do Mato Grosso, no ano 2000, foi realizado inqu&eacute;rito  coproparasitol&oacute;gico nas fezes de 477 (76,6%) dos 622 ind&iacute;genas de seis aldeias (Mamaind&eacute;,  Kith&atilde;ulu, Camarar&eacute;,  Negator&eacute;, Nambiquara e Wassussu) situadas nos vales dos rios Guapor&eacute; e Nambiquara, noroeste do Estado do  Mato Grosso. Amostras de f&iacute;gado de animais silvestres utilizados como fonte  alimentar por estes ind&iacute;genas tamb&eacute;m foram coletadas para avalia&ccedil;&atilde;o  histopatol&oacute;gica e parasitol&oacute;gica. Os resultados indicaram a presen&ccedil;a  de ovos de <i>C. hepatica </i>nas fezes de 8,6% (41/477) dos ind&iacute;genas e de protozo&aacute;rios  e outros helmintos  enteroparasitas  entre as amostras testadas. Ovos de <i>C. hepatica </i>tamb&eacute;m foram  identificados no f&iacute;gado de <i>Tayassu pecari </i>(queixada) e <i>Ateies paniscus </i>(macaco-aranha).  A elimina&ccedil;&atilde;o fecal de ovos de <i>C. hepatica </i>entre os ind&iacute;genas representou  infec&ccedil;&otilde;es esp&uacute;rias e foi associada ao consumo de v&iacute;sceras  de animais silvestres, considerados como reservat&oacute;rios do helminto na &aacute;rea.  Estudos cl&iacute;nico-epidemiol&oacute;gicos complementares devem ser desenvolvidos na  regi&atilde;o em virtude do potencial zoon&oacute;tico do parasita em causar infec&ccedil;&otilde;es  genu&iacute;nas de  capilar&iacute;ase hep&aacute;tica.</font></p>     <p><font size="2" face="Verdana"><b>Palavras-chave: </b><i>Capillaria hepatica</i>; Nematoda; helmintos; protozo&aacute;rios; popula&ccedil;&atilde;o ind&iacute;gena.</font></p> <hr size="1" noshade>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana"><b>ABSTRACT</b></font></p>     <p><font size="2" face="Verdana"><i>Capillaria hepatica </i>is  a hepatotropic nematode that infects rodents and other mammals. In 2000, eggs  of this helminth were identified in stool samples from the indigenous  population in Northwestern Mato Grosso,  Brazil.  A parasitological survey was conducted in stool samples from 477 (76.6%) out of  622 Indians from six villages (Mamaind&eacute;, Kithaulu,  Camarar&eacute;, Negator&eacute;, Nambiquara  and Wassussu) located in the valleys of the Guapor&eacute; and  Nambiquara rivers. Liver samples from wild animals were used by these Indians  as a food source and were collected for histopathological and parasitological  assessment. The results revealed the presence of <i>C. hepatica </i>eggs in the  stool samples from 8.6% (41/477) of the individuals and revealed enteric  parasitic protozoa and other helminths. Eggs of <i>C. hepatica </i>were also  found in the livers of <i>Tayassu pecari </i>(white-lipped peccary) and <i>Ateles paniscus </i>(black spider monkey). The fecal elimination of <i>C. hepatica </i>eggs  that was found among the Indians represented a spurious infection and was  associated with the consumption of the viscera of wild animals that are  considered to be reservoirs of <i>C. hepatica </i>in the investigated area.  Additional clinical and epidemiological studies must be performed in this area  because of the zoonotic potential of <i>C. hepatica </i>to cause hepatic  capillariasis.</font></p>     <p><font size="2" face="Verdana"><b>Keyword: </b><i>Capillaria  hepatica</i>; Nematoda; Helminths; protozoan; Indigenous  Population.</font></p> <hr size="1" noshade>     <p><font size="2" face="Verdana"><b>RESUMEN</b></font></p>     <p><font size="2" face="Verdana"><i>Capillaria  hepatica </i>es un nematodo hepatotr&oacute;pico capaz de infectar  roedores y otros mam&iacute;feros. En virtud de la identificaci&oacute;n de huevos de este  helminto en muestras de heces de ind&iacute;genas del noroeste de Mato Grosso, el a&ntilde;o 2000, se  realiz&oacute; una investigaci&oacute;n coproparasitaria en las heces de 477 (76,6%) de los  622 ind&iacute;genas de seis aldeas (Mamaind&eacute;, Kithaulu, Camarar&eacute;, Negator&eacute;,  Nambiquara y Wassussu) situadas en los valles de los r&iacute;os Guapor&eacute; y Nambiquara,  noroeste del Estado de Mato Grosso. Tambi&eacute;n se colectaron muestras, para  evaluaci&oacute;n histopatol&oacute;gica y parasitaria, de h&iacute;gados de animales silvestres  utilizados como fuente alimentar por estos ind&iacute;genas. Los resultados indicaron  la presencia de huevos de <i>C. hepatica </i>en las heces de 8,6% (41/477) de  los ind&iacute;genas y de protozoarios y otros helmintos enteropar&aacute;sitos entre las  muestras analizadas. Huevos de <i>C. hepatica </i>tambi&eacute;n fueron identificados  en el h&iacute;gado de Tayassu pecari (<i>pecar&iacute; barbiblanco) </i>y <i>Ateles paniscus </i>(mono ara&ntilde;a). La eliminaci&oacute;n fecal de huevos de <i>C. hepatica </i>entre  los ind&iacute;genas represent&oacute; infecciones espurias y fue asociada al consumo de  v&iacute;sceras de animales silvestres, considerados como reservorios del helminto en  el &aacute;rea. Estudios cl&iacute;nico-epidemiol&oacute;gicos complementarios deben ser  desarrollados en la regi&oacute;n, en virtud del potencial zoon&oacute;tico del par&aacute;sito en  causar infecciones genuinas de capilariasis hep&aacute;tica.</font></p>     <p><font size="2" face="Verdana"><b>Palabras  clave: </b><i>Capillaria hepatica</i>; Nematodo; helmintos; protozoarios; poblaci&oacute;n ind&iacute;gena.</font></p> <hr size="1" noshade>     <p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>INTRODU&Ccedil;&Atilde;O</b></font></p>     <p><font size="2" face="Verdana"><i>Capillaria  hepatica </i>(syn. <i>Calodium hepaticum; Hepaticola  hepatica</i>) &eacute; um helminto hepatotr&oacute;pico da fam&iacute;lia Trichinellidae que comumente infecta roedores, lagomorfos e outros vertebrados como can&iacute;deos, felinos, pecaris e primatas n&atilde;o humanos<sup>1,2,3,4</sup>.  Este parasita, potencialmente zoon&oacute;tico, tamb&eacute;m &eacute; associado a casos espor&aacute;dicos  de infec&ccedil;&atilde;o  em humanos<sup>5,6,7,8</sup>.</font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana">A infec&ccedil;&atilde;o genu&iacute;na ocorre a partir da ingest&atilde;o de material contaminado com  ovos embrionados que, ao chegarem ao ceco do  hospedeiro, eclodem,  liberando larvas que migram para o f&iacute;gado via  circula&ccedil;&atilde;o portal, onde permanecem at&eacute; a fase adulta. No par&ecirc;nquima hep&aacute;tico, as f&ecirc;meas adultas depositam ovos n&atilde;o embrionados que permanecem  encapsulados e n&atilde;o s&atilde;o excretados por via fecal<sup>3,6</sup>. Ap&oacute;s a deposi&ccedil;&atilde;o  dos ovos no f&iacute;gado, os vermes adultos morrem e s&atilde;o desintegrados pelo sistema  imune do hospedeiro, enquanto os ovos imaturos conservam-se no par&ecirc;nquima hep&aacute;tico<sup>4,7</sup>.</font></p>     <p><font size="2" face="Verdana">A libera&ccedil;&atilde;o dos ovos no meio ambiente pode ocorrer a  quando da morte do hospedeiro, em virtude da desintegra&ccedil;&atilde;o da carca&ccedil;a, ou a partir de  infec&ccedil;&otilde;es esp&uacute;rias ou pseudoparasit&aacute;rias, quando o f&iacute;gado de um  animal infectado &eacute; ingerido por outro vertebrado, determinando que os ovos n&atilde;o  embrionados de <i>C. hepatica </i>transitem de modo in&oacute;cuo pelo tubo digestivo  do indiv&iacute;duo e sejam eliminados pelas fezes<sup>3,6,9</sup>. Neste sentido, a  preda&ccedil;&atilde;o e canibalismo tamb&eacute;m s&atilde;o importantes para manuten&ccedil;&atilde;o do ciclo  da <i>C. hepatica </i>em popula&ccedil;&otilde;es de roedores<sup>10</sup>.</font></p>     <p><font size="2" face="Verdana">Uma vez no ambiente, os ovos n&atilde;o embrionados  necessitam de cerca de 28 dias,  sob condi&ccedil;&otilde;es adequadas de temperatura e umidade, para se tornarem infectantes (embrionados)<sup>11,12</sup>.</font></p>     <p><font size="2" face="Verdana">A identifica&ccedil;&atilde;o pr&eacute;via de ovos compat&iacute;veis com <i>C.  hepatica </i>nas fezes de dois ind&iacute;genas na aldeia de Camarar&eacute;, Estado do Mato  Grosso, motivou a realiza&ccedil;&atilde;o deste estudo, que objetivou elucidar os fatores implicados na  ocorr&ecirc;ncia de ovos deste nematoide nas fezes de ind&iacute;genas do noroeste mato-grossense.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>MATERIAIS E M&Eacute;TODOS</b></font></p>     <p><font size="2" face="Verdana">A presente investiga&ccedil;&atilde;o foi desenvolvida durante o  per&iacute;odo de 3 a 23 de outubro de 2000 nas aldeias  ind&iacute;genas de Mamaind&eacute;, Kith&atilde;ulu, Camarar&eacute;, Negator&eacute;, Nambiquara e Wassussu,  situadas nos vales do Guapor&eacute; e Nambiquara, noroeste do Estado do Mato Grosso,  na Amaz&ocirc;nia brasileira.  Estas aldeias est&atilde;o sob responsabilidade legal do Distrito Sanit&aacute;rio Especial  Ind&iacute;gena Vilhena/Estado de Roraima.</font></p>     <p><font size="2" face="Verdana">Dos 622 ind&iacute;genas das seis aldeias estudadas, foram realizados  exames coproparasitol&oacute;gico (m&eacute;todo qualitativo direto) nas fezes de 477 indiv&iacute;duos (76,6%). Adicionalmente,  foram coletadas amostras de f&iacute;gado de cinco animais silvestres das esp&eacute;cies <i>Tayassu  pecari </i>(Link,  1795) (queixada), <i>Ateles paniscus </i>(Linnaeus, 1758) (macaco-aranha), <i>Lagothrix  lagotricha </i>(Humboldt, 1812)  (macaco-barrigudo), <i>Chelonoidis </i>sp.  (Linnaeus, 1766)  (jabuti) e de um peixe de esp&eacute;cie n&atilde;o informada, j&aacute;  ca&ccedil;ados por estes ind&iacute;genas, na tentativa de correlacionar a presen&ccedil;a dos ovos  de <i>C. hepatica </i>nas fezes dos ind&iacute;genas com os h&aacute;bitos alimentares destas  popula&ccedil;&otilde;es, que comumente consomem v&iacute;sceras de animais como alimento, na &aacute;rea  ind&iacute;gena de Nambiquara. As amostras de f&iacute;gado foram acondicionadas em formol a  10% para posterior avalia&ccedil;&atilde;o histopatol&oacute;gica e parasitol&oacute;gica.</font></p>     <p><font size="2" face="Verdana">Em rela&ccedil;&atilde;o aos aspectos &eacute;ticos: este estudo de campo  ocorreu ap&oacute;s a identifica&ccedil;&atilde;o de ovos de <i>C. hepatica </i>nas fezes de dois  ind&iacute;genas da aldeia de Camarar&eacute;, motivando o deslocamento de uma equipe da  Se&ccedil;&atilde;o de Hepatologia do Instituto Evandro Chagas (SAHEP/IEC), Bel&eacute;m, Par&aacute;, at&eacute;  o noroeste do Estado do Mato Grosso a partir de solicita&ccedil;&atilde;o oficial do Distrito  Sanit&aacute;rio Especial Ind&iacute;gena (DSEI) Vilhena, Rond&ocirc;nia, ent&atilde;o a unidade federal sanit&aacute;ria  legalmente respons&aacute;vel pelas popula&ccedil;&otilde;es ind&iacute;genas das &aacute;reas em quest&atilde;o. Por  este motivo, n&atilde;o foram inclu&iacute;das autoriza&ccedil;&otilde;es pr&eacute;vias de um comit&ecirc; de &eacute;tica de  pesquisa com seres humanos para o estudo com os &iacute;ndios.</font></p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><font size="3" face="Verdana"><b>RESULTADOS</b></font></p>     <p><font size="2" face="Verdana">O resultado total  indicou a presen&ccedil;a de ovos de <i>C. hepatica </i>(<a href="#f1">Figura 1</a>) nas fezes de 8,6% (41/477) dos ind&iacute;genas das  seis aldeias estudadas. A preval&ecirc;ncia dentro de cada aldeia foi de 11,2%, 19,6%, 15,5% e 13,9% nas aldeias  Mamaind&eacute;, Kith&atilde;ulu, Negator&eacute; e Wassussu, respectivamente. N&atilde;o foram  identificados casos positivos nas aldeias Camarar&eacute; e Nambiquara.</font></p>     <p><a name="f1"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rpas/v2n3/3a05f1.gif" border="0"></p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana">Em rela&ccedil;&atilde;o ao n&uacute;mero total de casos positivos (41/477), a maior preval&ecirc;ncia  foi observada na aldeia Mamaind&eacute;, que correspondeu a 36,5% (15/41) do total. A  amplitude de idade variou de 2 meses a 64 anos (m&eacute;dia de 30,2 anos) sendo  predominante a faixa et&aacute;ria entre 5-14 anos. Em rela&ccedil;&atilde;o ao sexo, a maior  preval&ecirc;ncia foi identificada em indiv&iacute;duos do sexo masculino (58,5%). Os dados sobre a  preval&ecirc;ncia de ovos de <i>C. hepatica </i>em amostras de fezes em popula&ccedil;&otilde;es  ind&iacute;genas de duas &aacute;reas do noroeste do Estado do Mato Grosso encontram-se sumarizados na  <a href="#t1">tabela 1</a>.</font></p>     <p><a name="t1"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rpas/v2n3/3a05t1.gif" border="0"></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><font size="2" face="Verdana">O exame coproparasitol&oacute;gico tamb&eacute;m identificou outras  esp&eacute;cies de protozo&aacute;rios e helmintos enteroparasitas nas 477 amostras de fezes  analisadas (<a href="#t2">Tabela 2</a>). As  maiores preval&ecirc;ncias de protozo&aacute;rios foram <i>Entamoeba coli </i>(65%) e <i>Hymenolepis  nana </i>(35,4%).  J&aacute; os helmintos mais prevalentes foram <i>Ascaris  duodenalis </i>(11,7%)  e <i>Ascaris lumbricoides </i>(6,4%).</font></p>     <p><a name="t2"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rpas/v2n3/3a05t2.gif" border="0"></p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana">Macroscopicamente, n&atilde;o foram identificadas les&otilde;es nas  v&iacute;sceras dos animais. Entretanto, o exame histopatol&oacute;gico indicou a presen&ccedil;a de  ovos de <i>C. hepatica </i>em amostras de f&iacute;gado das esp&eacute;cies <i>Tayassu pecari </i>(queixada) (<a href="#f2">Figura 2</a>) e <i>Ateles  paniscus </i>(macaco-aranha) (<a href="#f3">Figura 3</a>). A estrutura do tecido hep&aacute;tico  apresentou arquitetura acinar preservada, com tratos portais exibindo discreta  expans&atilde;o fibrosa, bem como representa&ccedil;&atilde;o de ovos de parasitas, os quais foram  igualmente encontrados ao longo do par&ecirc;nquima hep&aacute;tico. Tais estruturas  parasit&aacute;rias, compat&iacute;veis com ovos de <i>C. hepatica, </i>apresentavam formato  ovalar, c&aacute;psula estriada e op&eacute;rculo bipolar n&atilde;o protuso, sendo circundados por  discreta rea&ccedil;&atilde;o inflamat&oacute;ria predominantemente composta por infiltrado de  linf&oacute;citos e eosin&oacute;filos. Vermes adultos n&atilde;o foram identificados e os  hepat&oacute;citos encontravam-se distribu&iacute;dos em traves regul ares, sem outras  particularidades.</font></p>     <p><a name="f2"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rpas/v2n3/3a05f2.gif" border="0"></p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><a name="f3"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rpas/v2n3/3a05f3.gif" border="0"></p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana">Os dados de  morfometria dos ovos de <i>C. hepatica </i>obtidos durante o exame  parasitosc&oacute;pico de amostras de ind&iacute;genas e animais silvestres indicaram  similaridade entre eles e encontram-se  descritos na <a href="#t3">tabela 3</a>.</font></p>     <p><a name="t3"></a></p>     <p>&nbsp;</p>     <p align="center"><img src="/img/revistas/rpas/v2n3/3a05t3.gif" border="0"></p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>DISCUSS&Atilde;O</b></font></p>     <p><font size="2" face="Verdana">A grande preval&ecirc;ncia de enteroparasitoses nos  ind&iacute;genas das aldeias Mamaind&eacute;, Kith&atilde;ulu, Camarar&eacute;, Negator&eacute;, Nambiquara e  Wassussu foi relacionada ao baixo status sanit&aacute;rio dessas popula&ccedil;&otilde;es. O exame  dessas condi&ccedil;&otilde;es sanit&aacute;rias das comunidades revelou que muitas moradias  apresentavam grande n&uacute;mero de habitantes e a &aacute;gua de consumo era proveniente de  fontes naturais ou po&ccedil;os artesianos sem nenhuma esp&eacute;cie de tratamento  sanit&aacute;rio. Outro fator  associado &agrave; alta preval&ecirc;ncia de parasitos nas fezes  dos ind&iacute;genas foi o contato direto com animais dom&eacute;sticos e silvestres &quot;domesticados&quot;.</font></p>     <p><font size="2" face="Verdana">O processo de limita&ccedil;&atilde;o da extens&atilde;o das terras  ind&iacute;genas em virtude da press&atilde;o antr&oacute;pica contribuiu para que algumas  popula&ccedil;&otilde;es alterassem h&aacute;bitos semi-n&ocirc;mades de outrora. E esta reduzida  mobilidade espacial implicou, tamb&eacute;m, na mudan&ccedil;a de alguns h&aacute;bitos de destino  de dejetos e  res&iacute;duos alimentares nas aldeias, fator que parece estar relacionado &agrave; alta  preval&ecirc;ncia de enteroparasitoses dentro de algumas popula&ccedil;&otilde;es<sup>9</sup>.</font></p>     <p><font size="2" face="Verdana">Apesar de haver privadas de fossa seca nas aldeias, em  virtude dos h&aacute;bitos culturais destes povos os dejetos ainda eram lan&ccedil;ados a c&eacute;u  aberto, no espa&ccedil;o peridomiciliar, determinando a exist&ecirc;ncia de contamina&ccedil;&atilde;o  ambiental por formas infectantes de parasitos.</font></p>     <p><font size="2" face="Verdana">A contamina&ccedil;&atilde;o peridomiciliar com restos alimentares e  material fecal desempenha papel importante na contamina&ccedil;&atilde;o do solo e,  consequentemente, na dissemina&ccedil;&atilde;o de formas infectantes de enteroparasitas<sup>9</sup>.  A preval&ecirc;ncia de enteroparasitoses tamb&eacute;m est&aacute; associada &agrave; contamina&ccedil;&atilde;o das  fontes de &aacute;gua em virtude deste destino inadequado de dejetos<sup>13</sup> e o  consumo de &aacute;gua sem tratamento favorece a transmiss&atilde;o de enteroparasitoses  entre os ind&iacute;genas<sup>13,14,15</sup>. Adicionalmente, o clima &uacute;mido e solo arenoso de  algumas &aacute;reas da Regi&atilde;o Amaz&ocirc;nica  tamb&eacute;m favorecem a manuten&ccedil;&atilde;o de est&aacute;gios infectantes de parasitas em  determinados ambientes<sup>9,14</sup>.</font></p>     <p><font size="2" face="Verdana">Algumas popula&ccedil;&otilde;es rurais  nativas da Regi&atilde;o Amaz&ocirc;nica conservam o h&aacute;bito de consumo de animais silvestres  na alimenta&ccedil;&atilde;o e a presen&ccedil;a de ovos <i>C. hepatica </i>nas fezes das popula&ccedil;&otilde;es  ind&iacute;genas estudadas indicou infec&ccedil;&otilde;es pseudoparasit&aacute;rias associadas &agrave; ingest&atilde;o  de v&iacute;sceras de animais silvestres infectados.</font></p>     <p><font size="2" face="Verdana">Relatos pr&eacute;vios da ocorr&ecirc;ncia de ovos de <i>C.  hepatica </i>nas fezes de ind&iacute;genas na regi&atilde;o tamb&eacute;m foram relacionados &agrave;  ingest&atilde;o de f&iacute;gado de animais silvestres<sup>9,16,17</sup>. De modo similar, um  relato de infec&ccedil;&atilde;o esp&uacute;ria associada ao consumo de f&iacute;gado de anta (<i>Tapirus  terrestris </i>Linnaeus, 1758) foi descrito em uma moradora n&atilde;o ind&iacute;gena de uma  comunidade ribeirinha no rio Negro, Amazonas<sup>3</sup>.</font></p>     <p><font size="2" face="Verdana">A preval&ecirc;ncia de 34,1% de anticorpos anti-C. <i>hepatica </i>entre seis popula&ccedil;&otilde;es ribeirinhas do Estado de Rond&ocirc;nia foi relacionada ao  consumo de carne de animais silvestres, relatado por 91,7% dos indiv&iacute;duos  entrevistados, indicando q ue a ingest&atilde;o de ovos n&atilde;o embrionados pode  sensibilizar o sistema imune destas pessoas<sup>4</sup>.</font></p>     <p><font size="2" face="Verdana">No Brasil, ovos de <i>C. hepatica </i>foram  anteriormente descritos em f&iacute;gados de outras esp&eacute;cies silvestres como o graxaim  do campo <i>Lycalopex gymnocercus </i>G. Fischer, 1814), cachorro-do-mato (<i>Cerdocyon  thous </i>Linnaeus 1766)<sup>2</sup>  e su&ccedil;uarana (<i>Puma concolor </i>Linnaeus 1771 )<sup>18</sup>.</font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana">Dentre as amostras de animais silvestres estudadas na  &aacute;rea ind&iacute;gena de Nambiquara, ovos de <i>C. hepatica </i>foram identificados em  f&iacute;gados de <i>Tayassu pecari </i>e <i>Ateles panicus, </i>duas esp&eacute;cies  previamente relatadas como hospedeiras naturais de <i>C hepatica </i><sup>1</sup>.A  presen&ccedil;a de ovos deste triquinel&iacute;deo nas fezes de humanos de &aacute;reas rurais do  Panam&aacute; foi, inclusive, associada ao consumo de v&iacute;sceras dessas mesmas esp&eacute;cies<sup>1</sup>.</font></p>     <p><font size="2" face="Verdana">As les&otilde;es histopatol&oacute;gicas por infec&ccedil;&otilde;es genu&iacute;nas em  mam&iacute;feros s&atilde;o caracterizadas por fibrose hep&aacute;tica de grau vari&aacute;vel e inflama&ccedil;&atilde;o  granulomatosa contendo ovos parasit&aacute;rios, necrose e infiltrado eosinof&iacute;lico<sup>5,8,19</sup>.  Durante o curso da infec&ccedil;&atilde;o, podem ser observados m&uacute;ltiplos macrogranulomas  contendo ovos circundados por severo infiltrado de linf&oacute;citos,  eosin&oacute;filos, fibroblastos e macr&oacute;fagos&nbsp; (c&eacute;lulas epitelioides e c&eacute;lulas gigantes multinucleadas,  do tipo corpo estranho)<sup>7,20</sup>. Os microgranulomas s&atilde;o compostos por <i>debris </i>de restos parasit&aacute;rios e ovos calcificados circundados por rea&ccedil;&atilde;o  inflamat&oacute;ria<sup>6,20</sup>.</font></p>     <p><font size="2" face="Verdana">Em est&aacute;gios iniciais, a les&atilde;o pode apresentar-se como  inflama&ccedil;&atilde;o granulomatosa necrosante circundada por pouca fibrose, com a  identifica&ccedil;&atilde;o de parasitas imaturos, vermes adultos com ovos no interior do  &uacute;tero ou de vermes degenerados sem a presen&ccedil;a de ovos, sendo poss&iacute;vel  identifica&ccedil;&atilde;o do parasita por estruturas caracter&iacute;sticas, como o esticossomo  que reveste o es&ocirc;fago parasit&aacute;rio<sup>7,21,22</sup>.</font></p>     <p><font size="2" face="Verdana">A presen&ccedil;a de vermes adultos e de ovos de <i>C.  hepatica </i>no f&iacute;gado de macacos cynomolgus naturalmente infectados induziu &agrave;  leve rea&ccedil;&atilde;o de  fibrose e infiltrado mononuclear, achados associados aos est&aacute;gios iniciais da  infec&ccedil;&atilde;o<sup>23</sup>. Similar aos resultados do presente estudo, leve  infiltrado inflamat&oacute;rio circunjacente aos ovos de <i>C. hepatica </i>foi  detectado em f&iacute;gados de gorilas naturalmente infectados<sup>24</sup>.</font></p>     <p><font size="2" face="Verdana">A presen&ccedil;a de ovos de <i>C. hepatica </i>no f&iacute;gado de  queixada e macaco-aranha estava associada &agrave; discreta fibrose e leve rea&ccedil;&atilde;o  inflamat&oacute;ria, sugerindo que essas esp&eacute;cies podem funcionar como reservat&oacute;rio  silvestre do parasita na &aacute;rea ind&iacute;gena de Nambiquara, no noroeste do Estado do  Mato Grosso.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>CONCLUS&Atilde;O</b></font></p>     <p><font size="2" face="Verdana">Os ovos de <i>C. hepatica </i>nas fezes das popula&ccedil;&otilde;es  ind&iacute;genas estudadas representaram infec&ccedil;&otilde;es esp&uacute;rias e foram associados ao  h&aacute;bito de consumo de v&iacute;sceras de animais silvestres, justificando o achado  inicial. As repercuss&otilde;es dessas circunst&acirc;ncias para as quest&otilde;es cl&iacute;nico-epidemiol&oacute;gicas junto &agrave;s popula&ccedil;&otilde;es ind&iacute;genas e a  presen&ccedil;a de reservat&oacute;rios silvestres do parasita merecem abordagem  complementar, j&aacute; que estas popula&ccedil;&otilde;es apresentam estreito contato ambiental com  o parasita e podem estar potencialmente expostas a infec&ccedil;&otilde;es genu&iacute;nas.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>AGRADECIMENTOS</b></font></p>     ]]></body>
<body><![CDATA[<p><font size="2" face="Verdana">Agradecemos pela colabora&ccedil;&atilde;o de Ant&ocirc;nio Augusto  Monteiro Lobato, Domingos Macedo de Souza (<i>in memorian</i>) e Bernardo  Farias da Concei&ccedil;&atilde;o pelo aux&iacute;lio t&eacute;cnico durante os trabalhos de campo.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>APOIO FINANCEIRO</b></font></p>     <p><font size="2" face="Verdana">Instituto Evandro  Chagas/MS/SVS; PACA.</font></p>     <p>&nbsp;</p>     <p><font size="3" face="Verdana"><b>REFER&Ecirc;NCIAS</b></font></p>     <!-- ref --><p><font size="2" face="Verdana">1 Foster  AO, Johnson CM. An explanation for the occurrence of <i>Capillaria hepatica </i>ova in  human faeces suggested by the finding of three new hosts used as food. Trans Roy Soc Trop Med Hyg. 1939;32(5):639-44.</font><!-- ref --><p><font size="2" face="Verdana">2 Ruas  JL, Soares MP, Farias NAR, Brum JGW. Infec&ccedil;&atilde;o por <i>Capillaria hepatica </i>em  carn&iacute;voros  silvestres (<i>Lycalopexgymnocercus </i>e <i>Cerdocyon thous</i>) na regi&atilde;o sul do Rio Grande do Sul. Arq Inst  Biol. 2003;70(2):127-30.</font><!-- ref --><p><font size="2" face="Verdana">3 Carvalho-Costa  FA, Silva AG, Souza AH, Moreira CJ,  Souza  DL, Valverde JG, et al.  Pseudoparasitism  by Calodium hepaticum (syn. <i>Capillaria hepatica; Hepaticola hepatica</i>) in  the Negro River, Brazilian Amazon. Trans Roy Soc Trop Med  Hyg. 2009 Oct;103(10):1071-3.</font><!-- ref --><p><font size="2" face="Verdana">4 Camargo LMA, Camargo JSAA, Vera LJ,  Barreto PTC, Tourinho EK, Souza MM. Capillariaisis  (Trichurida, Trichinellidae, <i>Capillaria hepatica) </i>in the Brazilian  Amazon: low pathogenicity, low infectivity and a novel mode of transmission. Parasit Vectors. 2010;3:11. Doi:10.1186/1756-3305-3-11 &#91;<a href="http://www.parasitesandvectors.com/content/3/1/11" target="_blank">Link</a>&#93;</font><!-- ref --><p><font size="2" face="Verdana">5 Piazza R, Correa MA, Fleury RN. Sobre  um caso de infesta&ccedil;&atilde;o humana por <i>Capillaria hepatica. </i>Rev  Inst Med Trop Sao Paulo. 1963;5:37-41.</font><!-- ref --><p><font size="2" face="Verdana">6 Galv&atilde;o VA. <i>Capillaria  hepatica</i>: an evaluation of its pathogenic role in man. Mem Inst Oswaldo  Cruz. 1981 Oct-Dec;76(4):415-33. Doi:http://dx.doi.org/10.1590/S0074-02761981000400010&nbsp; &#91;<a href="http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761981000400010&lng=en&nrm=iso&tlng=en" target="_blank">Link</a>&#93;</font><!-- ref --><p><font size="2" face="Verdana">7 Choe G, Lee HS, Seo JK, Chai JY, Lee SH, Eom KS, et al. Hepatic capillariasis: first case  reported in the Republic   of Korea. Am J Trop Med  Hyg. 1993 May;48(5):610-25. &#91;<a href="http://www.ncbi.nlm.nih.gov/pubmed/8517480" target="_blank">Link&#93;</a></font><!-- ref --><p><font size="2" face="Verdana">8 Sawamura  R, Fernandes MIM, Peres LC, Galv&atilde;o LC, Goldano HAS, Jorge SM, et al. Hepatic  capillariasis in children: report of 3 cases in Brazil. Am J Trop Med Hyg. 1999 Oct;61(4):642-7.</font><!-- ref --><p><font size="2" face="Verdana">9 Coimbra CEA Jr, Mello DA. Enteroparasitas  e <i>Capillaria </i>SP. entre o grupo Suru&iacute;, parque ind&iacute;gena  Aripuan&atilde;, Rond&ocirc;nia.  Mem Inst Oswaldo Cruz. 1981 jul-set;76(3):299-302. Doi:http://dx.doi.org/10.1590/S0074-02761981000300008 &#91;<a href="http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02761981000300008%20&lng=en&nrm=iso&tlng=en" target="_blank">Link</a>&#93;</font><!-- ref --><p><font size="2" face="Verdana">10 Sinniah  B, Singh M, Anuar K. Preliminary survey of <i>Capillaria hepatica </i>(Bancroft,  1893) in Malaysia.  J Helminthol. 1979 Jun;53:147-52. &#91;<a href="http://www.ncbi.nlm.nih.gov/pubmed/479546" target="_blank">Link</a>&#93;</font><!-- ref --><p><font size="2" face="Verdana">11 Oliveira RF, Andrade ZA. Worm load and septal fibrosis of the  liver in <i>Capillaria hepatica</i>-infected rats. Mem Inst Oswaldo Cruz. 2001 Oct;96(7):1001-3.</font><!-- ref --><p><font size="2" face="Verdana">12 Oliveira L, Souza MM, Andrade ZA. <i>Capillaria  hepatica</i>-induced hepatic fibrosis in rats: paradoxical  effect of repeated infections. Rev Soc Bras Med Trop. 2004;37(2):123-7. Doi:http://dx.doi.org/10.1590/S0074-02762001000700020&nbsp; &#91;<a href="http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762001000700020&lng=en&nrm=iso&tlng=en" target="_blank">Link&#93;</a></font><!-- ref --><p><font size="2" face="Verdana">13 Santos FSS, Gama ASM, Fernandes AB, Reis JDD Jr, Guimar&atilde;es J. 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J Parasitol. 1999 Dec;85(6):1168-70.</font><p>&nbsp;</p>     <p>&nbsp;</p>     <p><font size="2" face="Verdana"><b><a name="endereco"></a><a href="#topo"><img src="/img/revistas/rpas/v2n3/seta.gif" border="0"></a>Correspond&ecirc;ncia / Correspondence  / Correspondencia:</b>    <br> Manoel do Carmo Pereira  Soares    <br> Instituto Evandro Chagas, Se&ccedil;&atilde;o de Hepatologia    <br> Av. Almirante Barroso, 492    <br> CEP: 66093-020&nbsp;&nbsp;&nbsp;&nbsp; Bel&eacute;m-Par&aacute;-Brasil    <br> E-mail: <a href="mailto:msoares@iec.pa.gov.br">msoares@iec.pa.gov.br</a> </font></p>     <p><font size="2" face="Verdana">Recebido  em / Received / Recibido en: 3/9/201 1    <br> Aceito em / Accepted / Aceito en: 4/12/2011</font></p> <script type="text/javascript"> var gaJsHost = (("https:" == document.location.protocol) ? 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