<?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>2224-5421</journal-id>
<journal-title><![CDATA[Revista Cubana de Química]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cub Quim]]></abbrev-journal-title>
<issn>2224-5421</issn>
<publisher>
<publisher-name><![CDATA[Ediciones UO, Universidad de Oriente]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2224-54212019000200199</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Biosimilitud in vitro de tabletas de ranitidina 300 mg dispensadas en pobladores peruanos]]></article-title>
<article-title xml:lang="en"><![CDATA[In vitro biosimilarity of ranitidine 300 mg tablets dispensed in peruvian settlers]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Urquiza Gavidia]]></surname>
<given-names><![CDATA[Danitza Iraiz]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valencia Alayo]]></surname>
<given-names><![CDATA[Karen Edith Merari de los Santos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo Saavedra]]></surname>
<given-names><![CDATA[Ericson Felix]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala Jara]]></surname>
<given-names><![CDATA[Carmen Isolina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Trujillo Facultad de Farmacia y Bioquímica ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Peru</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2019</year>
</pub-date>
<volume>31</volume>
<numero>2</numero>
<fpage>199</fpage>
<lpage>208</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S2224-54212019000200199&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S2224-54212019000200199&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S2224-54212019000200199&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El estudio estuvo orientado a determinar la biosimilitud in vitro de las tabletas de ranitidina 300 mg multifuente y referente que se prescriben y dispensan en pobladores peruanos. Se utilizaron 12 tabletas procedentes de dos laboratorios (multifuente y referente), que fueron analizadas en tres medios de disolución con buffer pH 1,2; 4,5 y 6,8; para obtener la cantidad de medicamento disuelto en función del tiempo. Los resultados para los medios de disolución indican que los datos se ajustaron al modelo cinético orden uno, el tratamiento estadístico para el tiempo medio de disolución y eficiencia de disolución mediante t student evidenció que no existe diferencia significativa entre el medicamento multifuente y referente. Los valores del factor de similitud f2 fueron 83,3; 75,8 y 71,1 para los pH 1,2; 4,5 y 6,8 respectivamente. Se concluye similitud biológica entre el medicamento multifuente y referente, basado en pruebas de disolución in vitro.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The study was aimed at determining the in vitro biosimilarity of ranitidine 300 mg multi-source tablets and reference that are prescribed and dispensed in Peruvian residents. Twelve tablets from two laboratories (multi-source and reference) were used, which were analyzed in three dissolution media with buffer pH 1.2; 4.5 and 6.8; to get the amount of medication dissolved as a function of time. The results for the means of dissolution indicate that the data were adjusted to the order kinetic model, the statistical treatment for the mean time of dissolution and dissolution efficiency by student t showed that there is no significant difference between the multi-source drug and the reference. The values of the similarity factor f2 were 83,3; 75,8 and 71,1 for the pH 1,2; 4,5 and 6,8 respectively. Biological similarity between the multi-source drug and the reference based on in vitro dissolution tests is concluded.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[biosimilitud]]></kwd>
<kwd lng="es"><![CDATA[biológico]]></kwd>
<kwd lng="es"><![CDATA[ranitidina]]></kwd>
<kwd lng="es"><![CDATA[multifuente]]></kwd>
<kwd lng="es"><![CDATA[referente]]></kwd>
<kwd lng="en"><![CDATA[similarity]]></kwd>
<kwd lng="en"><![CDATA[biological]]></kwd>
<kwd lng="en"><![CDATA[ranitidine]]></kwd>
<kwd lng="en"><![CDATA[multi-source]]></kwd>
<kwd lng="en"><![CDATA[referent]]></kwd>
</kwd-group>
</article-meta>
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