<?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>0120-548X</journal-id>
<journal-title><![CDATA[Acta Biológica Colombiana]]></journal-title>
<abbrev-journal-title><![CDATA[Acta biol.Colomb.]]></abbrev-journal-title>
<issn>0120-548X</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-548X2009000100015</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[FASE INTESTINAL DE Trichinella spiralis EN MODELO MURINO]]></article-title>
<article-title xml:lang="en"><![CDATA[Intestinal Trichinella spiralis Phase In Murine Model]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MORENO GARCÍA]]></surname>
<given-names><![CDATA[MARÍA ALEJANDRA]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MALDONADO TAPIA]]></surname>
<given-names><![CDATA[CLAUDIA H]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[GARCÍA MAYORGA]]></surname>
<given-names><![CDATA[ELDA ARACELI]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[REVELES HERNÁNDEZ]]></surname>
<given-names><![CDATA[ROSA GABRIELA]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[MUÑOZ ESCOBEDO]]></surname>
<given-names><![CDATA[JOSÉ JESÚS]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Unidad Académica de Biología Experimental  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Autónoma de Zacatecas. Instituto de Investigaciones Odontológicas ]]></institution>
<addr-line><![CDATA[Guadalupe Zac]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>04</month>
<year>2009</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>04</month>
<year>2009</year>
</pub-date>
<volume>14</volume>
<numero>1</numero>
<fpage>203</fpage>
<lpage>210</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-548X2009000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-548X2009000100015&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-548X2009000100015&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Trichinella spiralis se encuentra principalmente en el hombre, rata, cerdo, perro; puede infectar a cualquier carnívoro u omnívoro. Cuando la carne o sus derivados están contaminados con larvas infectantes (LI) de T. spiralis y son ingeridas éstas pasan al estómago, donde sus cápsulas son disueltas por acción de los jugos gástricos, las larvas son liberadas en pocas horas, después pasan a la porción proximal del intestino delgado, donde se lleva a cabo su desarrollo. El objetivo del presente trabajo fue evaluar la fase intestinal de T. spiralis en un modelo murino. Un lote de 45 ratas Long Evans, se infectaron con aproximadamente 500 LI, y fueron sacrificadas tres diarias por 15 días. Se tomó un segmento de duodeno, yeyuno e íleon y se fijaron en formol al 10% para posteriormente ser procesados en parafina y teñido con hematoxilina-eosina. El resto del intestino delgado fue fraccionado, se incubó a 37 °C por dos horas y el sobrenadante se observó al microscopio de luz. Se encontró que el implante se lleva a cabo a nivel de yeyuno e íleon, que las hembras adultas dan origen aproximadamente 60-80 larvas recién nacidas (LRN), parto vivíparo en un tercio distal y subse-cuentemente son destruidas. Los machos adultos tienen espermatozoides no ciliados.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Trichinella spiralis is a parasitic disease in man, rat, pig, but can infect any carnivorous or omnivorous. When the meat or their derivates are contaminated with infective larvae (il) of T. spiralis pass to the stomach, their capsules are dissolved by the stomach juice, the larvaes are liberated in few hours, and then they pass to the near portion of the slim intestine in which they develop. The objective of the present work was to evaluate the intestine phase of T. spiralis in a murine model. Fourtyfive Long Evans rats were infected with 500 li approximately, then 3 rats were sacrificed everyday over a period of 15 days. A portion of duodenum, jejune and ileum were fixed in formaldehyde 10% and subsequently embeded in paraffin and dyed with hematoxilin-eosina. The rest of the slim intestine was cut and fractionated and incubated at 37 °c for 2 hours; the supernadant was observed unde light microscopy. We observed that the implant of larvae was in the jejune and ileum. The adult females gave origin to approximately 6080 newborn larvaes (LRN) and subsequently were destroyed. The adult male had non-ciliated sperm.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[larvas infectantes]]></kwd>
<kwd lng="es"><![CDATA[adultos]]></kwd>
<kwd lng="es"><![CDATA[larvas recién nacidas]]></kwd>
<kwd lng="en"><![CDATA[Infectant larvae]]></kwd>
<kwd lng="en"><![CDATA[adult]]></kwd>
<kwd lng="en"><![CDATA[recently born larvae]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  ]]></body><back>
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