<?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>1657-9267</journal-id>
<journal-title><![CDATA[Universitas Psychologica]]></journal-title>
<abbrev-journal-title><![CDATA[Univ. Psychol.]]></abbrev-journal-title>
<issn>1657-9267</issn>
<publisher>
<publisher-name><![CDATA[Pontificia Universidad Javeriana]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1657-92672010000300008</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Idosos com diabetes mellitus tipo 2 e o desempenho cognitivo no teste Wisconsin de classificação de cartas (WCST)]]></article-title>
<article-title xml:lang="en"><![CDATA[Elderly people with Diabetes Mellitus Type 2 and Cognitive Performance in the Wisconsin Card Sorting Test (WCST)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[FERNANDEZ-LOPEZ]]></surname>
<given-names><![CDATA[REGINA MARÍA]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[DE LIMA-ARGIMON]]></surname>
<given-names><![CDATA[IRANÍ Í.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Pontificia Universidade Católica do Rio Grande do Sul  ]]></institution>
<addr-line><![CDATA[Porto Alegre RS]]></addr-line>
<country>Brasil</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Pontificia Universidade Católica do Rio Grande do Sul  ]]></institution>
<addr-line><![CDATA[Porto Alegre RS]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2010</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2010</year>
</pub-date>
<volume>9</volume>
<numero>3</numero>
<fpage>697</fpage>
<lpage>713</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1657-92672010000300008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1657-92672010000300008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1657-92672010000300008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Estudos identificam a existência de uma conexão entre Diabetes Mellitus (DM) e demência. A hiperglicemia pode ser um fator significativo para incidência de Alzheimer e uma causa secundária de demência. Pesquisas revelaram que as funções executivas dos idosos com DM estavam mais prejudicadas do que naqueles sem DM. A Diabetes Mellitus Tipo 2 (DM2) está associada a déficits cognitivos e funcionais, e um dos instrumentos que pode ser utilizado para avaliar funções executivas é o WCST. Foi realizada uma revisão sistemática com o objetivo de verificar as características das publicações indexadas nos últimos oito anos, que abordam os temas DM2, idosos, WCST, flexibilidade cognitiva, do pensamento e funções executivas. Os resultados demonstraram que estudos envolvendo DM2, idosos e WCST são reduzidos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Studies have identified the existence of a connection between Diabetes Mellitus and dementia. High blood sugar level can be a significant factor of the incidence of Alzheimer, which could be a secondary cause of dementia. Other research revealed that the executive functions of the elderly with DM were more impaired than in those without DM. Type 2 Diabetes Mellitus (DM2) is associated with cognitive and functional deficits and, one of the tools, which can be used to assess executive functions, is the Wisconsin Card Sorting Test (WCST). A systematic review was performed with the aim of verifying the characteristics of indexed publications in the last eight years, using the following subjects: Type 2 Diabetes, elderly people, the WCST thought and cognitive flexibility, and executive functions. Results show that studies involving DM2, elderly people and WCST are few.]]></p></abstract>
<kwd-group>
<kwd lng="pt"><![CDATA[Diabetes Tipo 2]]></kwd>
<kwd lng="pt"><![CDATA[Teste Wisconsin de Classificação de Cartas (WCST)]]></kwd>
<kwd lng="pt"><![CDATA[idosos]]></kwd>
<kwd lng="pt"><![CDATA[flexibilidade cognitiva]]></kwd>
<kwd lng="pt"><![CDATA[mental e do pensamento e funções executivas]]></kwd>
<kwd lng="pt"><![CDATA[Wisconsin Card Sorting Test]]></kwd>
<kwd lng="pt"><![CDATA[Vejez]]></kwd>
<kwd lng="pt"><![CDATA[Diabetes Mellitus]]></kwd>
<kwd lng="pt"><![CDATA[Tipo 2]]></kwd>
<kwd lng="pt"><![CDATA[Enfermedad de Alzheimer]]></kwd>
<kwd lng="en"><![CDATA[Type 2 Diabetes]]></kwd>
<kwd lng="en"><![CDATA[Wisconsin Card Sorting Test (WCST)]]></kwd>
<kwd lng="en"><![CDATA[elderly people]]></kwd>
<kwd lng="en"><![CDATA[cognitive]]></kwd>
<kwd lng="en"><![CDATA[mental and thought flexibility and executive functions]]></kwd>
<kwd lng="en"><![CDATA[Wisconsin Card Sorting Test]]></kwd>
<kwd lng="en"><![CDATA[Old People Diabetes Mellitus]]></kwd>
<kwd lng="en"><![CDATA[Type 2]]></kwd>
<kwd lng="en"><![CDATA[Alzheimer Disease]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  <font face="Verdana" size="2">     <p align="center"><b><font size="4">Idosos com diabetes mellitus tipo 2 e o desempenho cognitivo no teste Wisconsin de classifica&ccedil;&atilde;o de cartas (WCST)*</font></b></p>     <p align="center"><b><font size="3">Elderly people with Diabetes Mellitus Type 2 and Cognitive Performance in the Wisconsin Card Sorting Test (WCST)</font></b></p>      <p><b>REGINA MARIA FERNANDEZ-LOPEZ <sup>**</sup> </b></p>     <p><b>IRANI I. DE LIMA-ARGIMON <sup>***</sup></b></p>     <p>*    Artigo de pesquisa em neuropsicologia.</p>     <p><sup>**</sup> Av. Assis Brasil, 3532 conj.515/513/516, Fones: (51) 3350-5033/3350-5042/ 9967-1595 /3348-3491, Jardim Lind&oacute;ia-Porto Alegre-RS. E-mail:<a href="mailto:regina@nucleomedicopsicologico.com.br"> regina@nucleomedicopsicologico.com.br</a></p>     <p><sup>***</sup> Pontificia Universidade Cat&oacute;lica do Rio Grande do Sul,Brasil, Av. Ipiranga, 6681-Pr&eacute;dio 11-9&deg; andar, CEP: 90619-900-Porto Alegre-RS, Fone/Fax: (51) 3320.3500-Ramais 3633 - 4466-4207. E-mail:<a href="mailto:argimoni@pucrs.br"> argimoni@pucrs.br</a></p>     <p>Recibido: octubre 2 de 2009       Revisado: enero 21 de 2010       Aceptado: marzo 14 de 2010</p> <hr>      <p align="center"><b>Para citar este art&iacute;culo</b></p>     ]]></body>
<body><![CDATA[<p align="left">Fernandes Lopes, R. & De Lima Agrimon, I. (2010). Idosos com diabetes mellitus tipo 2 e o desempenho cognitivo no teste Wisconsin de classifica&ccedil;&atilde;o de cartas (WCST). Universitas Psychologica, 9 (3), 697-713.</p> <hr>       <p><b>Resumo</b></p>     <p>Estudos identificam a exist&ecirc;ncia de uma conex&atilde;o entre Diabetes <i>Mellitus </i>(DM) e dem&ecirc;ncia. A hiperglicemia pode ser um fator significativo para incid&ecirc;ncia de Alzheimer e uma causa secund&aacute;ria de dem&ecirc;ncia. Pesquisas revelaram que as fun&ccedil;&otilde;es executivas dos idosos com DM estavam mais prejudicadas do que naqueles sem DM. A Diabetes <i>Mellitus </i>Tipo 2 (DM2) est&aacute; associada a d&eacute;ficits cognitivos e funcionais, e um dos instrumentos que pode ser utilizado para avaliar fun&ccedil;&otilde;es executivas &eacute; o WCST. Foi realizada uma revis&atilde;o sistem&aacute;tica com o objetivo de verificar as caracter&iacute;sticas das publica&ccedil;&otilde;es indexadas nos &uacute;ltimos oito anos, que abordam os temas DM2, idosos, WCST, flexibilidade cognitiva, do pensamento e fun&ccedil;&otilde;es executivas. Os resultados demonstraram que estudos envolvendo DM2, idosos e WCST s&atilde;o reduzidos. </p>     <p><b>Palavras-chave autor :</b> Diabetes Tipo 2, Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas (WCST), idosos, flexibilidade cognitiva, mental e do pensamento e fun&ccedil;&otilde;es executivas. </p>     <p><b>Palabras clave descriptor :</b> Wisconsin Card Sorting Test, Vejez, Diabetes Mellitus, Tipo 2, Enfermedad de Alzheimer. </p> <hr>     <p><b>Abstract</b></p>     <p>Studies have identified the existence of a connection between Diabetes Mellitus and dementia. High blood sugar level can be a significant factor of the incidence of Alzheimer, which could be a secondary cause of dementia. Other research revealed that the executive functions of the elderly with DM were more impaired than in those without DM. Type 2 Diabetes Mellitus (DM2) is associated with cognitive and functional deficits and, one of the tools, which can be used to assess executive functions, is the Wisconsin Card Sorting Test (WCST). A systematic review was performed with the aim of verifying the characteristics of indexed publications in the last eight years, using the following subjects: Type 2 Diabetes, elderly people, the WCST thought and cognitive flexibility, and executive functions. Results show that studies involving DM2, elderly people and WCST are few. </p>     <p><b>Keywords author :</b> Type 2 Diabetes, Wisconsin Card Sorting Test (WCST), elderly people, cognitive, mental and thought flexibility and executive functions. </p>     <p><b>Keywords plus :</b> Wisconsin Card Sorting Test, Old People Diabetes Mellitus, Type 2, Alzheimer Disease.</p> <hr>       <p><b>Introdu&ccedil;&atilde;o</b></p>     ]]></body>
<body><![CDATA[<p>Estudos envolvendo idosos est&atilde;o crescendo nos &uacute;ltimos anos, demonstrado por Argimon e Stein (2005), que referem que o envelhecimento da popula&ccedil;&atilde;o &eacute; um crescente fen&ocirc;meno e precisa ser mais estudado. Esse crescimento indica estar associado &agrave;  melhoria das condi&ccedil;&otilde;es de vida, ao atendimento de sa&uacute;de e ao avan&ccedil;o que a medicina tem alcan&ccedil;ado nas &uacute;ltimas d&eacute;cadas. Presumese que crescer&aacute; em torno de 8.95% a 18.8% o percentual de brasileiros com mais de 60 anos at&eacute; o ano de 2025. Estudos da &uacute;ltima d&eacute;cada de Costa e Veras (2003), referem que o n&uacute;mero de idosos acima de 60 anos de idade, no Brasil, passou de 3 milh&otilde;es em 1960, para 7 milh&otilde;es em 1975, e 14 milh&otilde;es em 2002 (um aumento de 500% em quarenta anos); e estimase que alcan&ccedil;ar&aacute; 32 milh&otilde;es em 2020. Com o aumento da idade, tornase comum o surgimento de dificuldades de mem&oacute;ria associadas &agrave;  doen&ccedil;a f&iacute;sica.</p>     <p>No aspecto econ&ocirc;mico, as pessoas de Terceira Idade passam a ser vistas como improdutivas, sendo decretada, assim, sua velhice econ&ocirc;mica e social (Amarilho &amp; Carlos, 2005). Passam por um processo natural de envelhecimento e, percebe-se que, no decorrer dos anos, v&atilde;o sendo geradas modifica&ccedil;&otilde;es funcionais em seu organismo, favorecendo o aparecimento de doen&ccedil;as f&iacute;sicas relacionadas a esse per&iacute;odo de vida (Nascimento, 2007). Os idosos tamb&eacute;m apresentam mais problemas de sa&uacute;de, como diabetes, hipertens&atilde;o arterial, problemas visuais, entre outros (Andrade, Santos &amp; Bueno, 2004).</p>     <p>Uma das doen&ccedil;as citadas, a <i>Diabetes Mellitus </i>(DM), vem crescendo em conseq&uuml;&ecirc;ncia do aumento de pessoas idosas, da ociosidade, da obesidade e do aumento de vida dos diab&eacute;ticos (Freitas, Py, Can&ccedil;ado &amp; Gorzoni, 2006). A DM refere-se a uma s&iacute;ndrome de dist&uacute;rbio metab&oacute;lico de carboidratos, que envolvem a hiperglicemia, tem origem gen&eacute;tica &eacute; subdividida em Diabetes <i>Mellitus </i>Tipo 1 (DM1), e a <i>Diabetes Mellitus </i>Tipo 2 (DM2).</p>     <p>A DM1 distingui-se pela destrui&ccedil;&atilde;o autoimune celular do p&aacute;ncreas, ocasionando a defici&ecirc;ncia da insulina. &eacute; o tipo diagnosticado, com freq&uuml;&ecirc;ncia na inf&acirc;ncia e adolesc&ecirc;ncia devido &agrave;  destrui&ccedil;&atilde;o auto-imune das c&eacute;lulas beta do tipo 1A. No diagn&oacute;stico, j&aacute; mostra 85% das c&eacute;lulas beta destru&iacute;das, com tend&ecirc;ncia a desenvolver cetoacidose e coma, assim como um controle do metabolismo l&aacute;bil. O tratamento demanda uma dose di&aacute;ria de insulina. A DM1 &eacute; mais comum na inf&acirc;ncia e na adolesc&ecirc;ncia, ainda que possa surgir em todas as idades, firmando o diagn&oacute;stico anterior aos 30 anos de idade (Freitas et al., 2006). De todos os tipos de DM, a preval&ecirc;ncia da DM1 &eacute; de 15%, com tend&ecirc;ncia a cetoacidose, que &eacute; uma complica&ccedil;&atilde;o aguda, caracter&iacute;stica do DM1, um conjugado de dist&uacute;rbios metab&oacute;licos que se amplia em uma situa&ccedil;&atilde;o de defici&ecirc;ncia insul&iacute;nica grave ou absoluta, freq&uuml;entemente associada a condi&ccedil;&otilde;es estressantes que ocasionam o aumento dos horm&ocirc;nios contrareguladores (Foss-Freitas &amp; Foss, 2003).</p>     <p>A DM2 caracteriza-se por mais elevada preval&ecirc;ncia em idosos e se constitui na forma mais comum, apresentando diferentes graus de defici&ecirc;ncia e resist&ecirc;ncia &agrave;  atua&ccedil;&atilde;o da insulina. Consiste numa doen&ccedil;a cr&ocirc;nica que afeta idosos, sem apresentar tend&ecirc;ncia a cetoacidose. Em idosos acima de 60 anos, a preval&ecirc;ncia oscila entre 15% a 20%, com eleva&ccedil;&otilde;es nestes percentuais em idosos com mais de 75 anos. Mais de 50% do total de pessoas com DM mostram estar acima dos 60 anos; &eacute; uma doen&ccedil;a que est&aacute; associada ao aumento de les&otilde;es macro e microvascular. Estudo de preval&ecirc;ncia de DM no Brasil, em 1987, evidenciou uma taxa de 7,6 %, sendo o Rio Grande do Sul o estado com maior taxa, com 12,1%. A distribui&ccedil;&atilde;o por idade foi: de 30 a 39 anos com 2,7%; de 40 a 49 anos -5,5%; de 50 a 59 anos-12,6%; e se eleva na faixa et&aacute;ria de 60 a 69 anos-girando em torno de 17,4%. Assim, mundialmente sua preval&ecirc;ncia est&aacute; crescendo, estimando-se que o n&uacute;mero de diab&eacute;ticos dever&aacute; aumentar em de 50% at&eacute; o ano de 2025 (Foss-Freitas &amp; Foss, 2003; Ferreira, Almeida, Siqueira &amp; Khawali, 2005; Ler&aacute;rio et al., 2008).</p>     <p>Com esses &iacute;ndices elevados da preval&ecirc;ncia da DM, percebe-se que a DM2 &eacute; conhecida por causar preju&iacute;zos cardiovasculares, retinopatia, neuropatia perif&eacute;rica e enfermidades card&iacute;acas. Nos &uacute;ltimos anos, houve interesse significativo em estudos sobre os efeitos da DM no c&eacute;rebro (Starr &amp; Convit, 2007). Os pacientes com DM1, quando comparados a controles, apresentaram d&eacute;ficit cognitivo e diminui&ccedil;&atilde;o do volume cerebral. Outro estudo com DM 1 e cogni&ccedil;&atilde;o encontrou que a defici&ecirc;ncia cognitiva org&acirc;nica observada se caracterizava por diminu&iacute;da velocidade e flexibilidade mental (Brands, Biessels, Hann, Kapelle &amp; Kessels, 2005).</p>     <p>Diante dessas defici&ecirc;ncias ocasionadas pela DM, Fauber (2006) mostra, em seus achados, a exist&ecirc;ncia, cada vez maior da conex&atilde;o entre DM e dem&ecirc;ncia. O &iacute;ndice elevado de a&ccedil;&uacute;car no sangue pode ser tanto um fator significativo para incid&ecirc;ncia de Alzheimer, como tamb&eacute;m, uma causa secund&aacute;ria de dem&ecirc;ncia. Nos Estados Unidos, aproximadamente 18 milh&otilde;es de pessoas t&ecirc;m DM2, e 41 milh&otilde;es t&ecirc;m a condi&ccedil;&atilde;o conhecida como pr&eacute;-diabetes. DM e press&atilde;o alta, que freq&uuml;entemente est&atilde;o juntas, s&atilde;o fatores de risco importantes e, talvez, trabalhem juntos para causar isquemia e infartos lacunares, isquemia transit&oacute;ria, que s&atilde;o uma contribui&ccedil;&atilde;o para a dem&ecirc;ncia. Num estudo longitudinal de oito anos com pessoas com DM2, os resultados de pesquisas revelam que pessoas com baixo controle da glicose tinham risco de 22% a 78% de maior probabilidade de desenvolver dem&ecirc;ncia. Outras pessoas portadoras de Alzheimer e sem DM mostraram menos decl&iacute;nio e diminui&ccedil;&atilde;o da velocidade do decl&iacute;nio.</p>     <p>Estudos sugerem que dem&ecirc;ncia e DM2 em idosos s&atilde;o condi&ccedil;&otilde;es que podem estar inter-relacionadas, mas a natureza dessa associa&ccedil;&atilde;o ainda &eacute; incerta. A causa s&oacute; poder&aacute; ser estabelecida atrav&eacute;s de uma pesquisa longitudinal, levando em considera&ccedil;&atilde;o fatores de estudo sobre a cogni&ccedil;&atilde;o. Em dez estudos pesquisados (Allen, Frier &amp; Strachan, 2004) em que foi realizada uma combina&ccedil;&atilde;o de avalia&ccedil;&otilde;es de dom&iacute;nio cognitivo espec&iacute;fico e um diagn&oacute;stico cl&iacute;nico de dem&ecirc;ncia na avalia&ccedil;&atilde;o de fun&ccedil;&atilde;o cognitiva, a DM foi associada com qualquer um acelerado decl&iacute;nio cognitivo ou uma incid&ecirc;ncia aumentada de dem&ecirc;ncia em oito de nove dos estudos baseados na popula&ccedil;&atilde;o. Um destes estudos demonstrou uma rela&ccedil;&atilde;o entre DM e deteriora&ccedil;&atilde;o cognitiva vascular, mas n&atilde;o com outros tipos de dem&ecirc;ncia. Nenhuma associa&ccedil;&atilde;o entre DM2 e decl&iacute;nio cognitivo foi demonstrada no caso-controle do estudo. Assim, estes estudos fornecem evid&ecirc;ncias para sustentar a tese de que as pessoas com DM2 est&atilde;o com risco aumentado de deteriora&ccedil;&atilde;o cognitiva em desenvolvimento em compara&ccedil;&atilde;o com a popula&ccedil;&atilde;o geral (Allen et al., 2004).</p>     <p>Do mesmo modo, a DM pode afetar o sistema nervoso central resultando em defici&ecirc;ncias cognitivas. Em pesquisa realizada por Brands et al. (2007) revelou-se impacto negativo na cogni&ccedil;&atilde;o e DM2. Este estudo envolveu extensa avalia&ccedil;&atilde;o neuropsicol&oacute;gica focalizando o racioc&iacute;nio abstrato, mem&oacute;ria, aten&ccedil;&atilde;o e fun&ccedil;&otilde;es executivas, visuoconstru&ccedil;&atilde;o, processamento e rapidez da informa&ccedil;&atilde;o. O objetivo era comparar dois grupos, um com DM 1 e outro com DM2, com dura&ccedil;&atilde;o m&eacute;dia de sete anos. Os pacientes com DM2 apresentaram significativamente mais profundas les&otilde;es e atrofia cortical em IRM. Assim, os pacientes com DM1 apresentaram um melhor desempenho ao serem pareados com pacientes com DM2 com apenas sete anos de DM.</p>     <p>D&eacute;ficits cognitivos, incluindo efici&ecirc;ncia psicomotora, funcionamento executivo, intelig&ecirc;ncia mem&oacute;ria e aprendizagem, foram associados a DM2. Houve associa&ccedil;&atilde;o entre a severidade da DM2 e o grau de envolvimento no c&eacute;rebro atrav&eacute;s de processamento de imagens que mostraram atrofia cortical e subcortical e aumento das les&otilde;es e preju&iacute;zo cognitivo em DM2 (Starr &amp; Convit, 2007). Esses estudos inclu&iacute;ram pacientes idosos, principalmente com controle diab&eacute;tico pobre.</p>     ]]></body>
<body><![CDATA[<p>Estudos realizados (Abel et al., 2006) com o objetivo de comparar as fun&ccedil;&otilde;es executivas de pacientes com doen&ccedil;a degenerativa cerebelar, com pacientes com Doen&ccedil;a de Parkinson, utilizando o instrumento Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas, revelaram que os pacientes com doen&ccedil;a degenerativa cerebelar mostraram desempenho pior nos erros perseverativos e n&atilde;o perseverativos. Os resultados evidenciaram que os pacientes com doen&ccedil;a degenerativa cerebelar apresentam um padr&atilde;o de disfun&ccedil;&atilde;o pr&eacute;-frontal e d&eacute;ficits maiores nas fun&ccedil;&otilde;es executivas.</p>     <p>Na avalia&ccedil;&atilde;o dos padr&otilde;es de d&eacute;ficits cognitivos em idosos com DM, Qiu et al. (2006) estudaram 290 indiv&iacute;duos idosos, sendo 40% deles com DM. Os resultados evidenciaram que as fun&ccedil;&otilde;es cognitivas dos idosos com DM estavam mais prejudicadas do que naqueles sem DM. Um estudo realizado com idosos com mais de 70 anos com DM, utilizando Mini Exame do Estado Mental (MEEM) e a Escala de Depress&atilde;o Geri&aacute;trica (GDS), mostrou que idosos com DM apresentam maior risco de desenvolver problemas cognitivos em rela&ccedil;&atilde;o ao grupo controle (Munshi, Grande, Hayes &amp; Ayres, 2006).</p>     <p>Para identificar precocemente decl&iacute;nio cognitivo em idosos, pode-se avaliar as fun&ccedil;&otilde;es executivas, que se refere &agrave; s habilidades cognitivas envolvidas no planejamento, inicia&ccedil;&atilde;o, seguimento e monitoramento de comportamentos complexos dirigidos a uma meta. Na avalia&ccedil;&atilde;o neuropsicol&oacute;gica, as fun&ccedil;&otilde;es executivas implicam uma variedade de fun&ccedil;&otilde;es, como a aten&ccedil;&atilde;o, concentra&ccedil;&atilde;o, capacidade de abstra&ccedil;&atilde;o, flexibilidade de controle mental, autocontrole, mem&oacute;ria operacional, seletividade de est&iacute;mulos (Strauss, Sherman &amp; Spreen, 2006).</p>     <p>Outra perspectiva de estudos proposta (Baudic, Dalla Barba, Thibaudet, Smagglhe Remy et al., 2006) demonstra que as fun&ccedil;&otilde;es executivas abrangem um n&uacute;mero de habilidades cognitivas para controlar ou gerenciar o comportamento, tal como a tomada de decis&atilde;o, o planejamento e monitoramento mental, e a inicia&ccedil;&atilde;o do comportamento, a organiza&ccedil;&atilde;o e a inibi&ccedil;&atilde;o. An&aacute;lise realizada em pacientes com Alzheimer mostra que as fun&ccedil;&otilde;es executivas s&atilde;o prejudicadas precocemente j&aacute; na primeira fase da doen&ccedil;a. Al&eacute;m disso, a mem&oacute;ria epis&oacute;dica, sustenta&ccedil;&atilde;o da aten&ccedil;&atilde;o e d&eacute;ficits no funcionamento executivo precedem a deteriora&ccedil;&atilde;o.</p>     <p>&eacute; importante considerar que, nas ultimas d&eacute;cadas, tem se aprofundando o estudo sobre o papel desempenhado pelos os lobos frontais e sobre sua fun&ccedil;&atilde;o, que se estende ao controle dos processos cognitivos. Essa rela&ccedil;&atilde;o infere que os lobos frontais se encarregam de uma fun&ccedil;&atilde;o executiva. A fun&ccedil;&atilde;o executiva, em termos gerais, &eacute; definida como processos que associam id&eacute;ias simples e combinam com resolu&ccedil;&atilde;o de problemas de alta complexidade (Tiarap&uacute;-Ustr&aacute;rroz &amp; Mu&ntilde;oz-C&eacute;spedes, 2005).</p>     <p>Lezak (2004) refere que pacientes com preju&iacute;zos na &aacute;rea frontal apresentam problemas de iniciativa e motiva&ccedil;&atilde;o, mostram-se incapazes de planejar metas e objetivos e n&atilde;o desenham planos de a&ccedil;&atilde;o para o objetivo desejado. Assim, o funcionamento executivo ou controle executivo est&atilde;o relacionados a uma s&eacute;rie de mecanismos da otimiza&ccedil;&atilde;o de processos cognitivos para resolu&ccedil;&atilde;o de situa&ccedil;&otilde;es complexas (Tiarap&uacute;-Ustr&aacute;rroz &amp; Mu&ntilde;oz-C&eacute;spedes, 2005). Dessa forma, as fun&ccedil;&otilde;es executivas s&atilde;o respons&aacute;veis por controlar ou gerenciar o comportamento, tal como a tomada de decis&atilde;o, o planejamento e monitoramento mental e a inicia&ccedil;&atilde;o do comportamento, a organiza&ccedil;&atilde;o e a inibi&ccedil;&atilde;o. Estudos mostram que em pacientes com Alzheimer, as fun&ccedil;&otilde;es executivas s&atilde;o prejudicadas precocemente (Baudic et al., 2006).</p>     <p>A flexibilidade mental faz parte das fun&ccedil;&otilde;es executivas e &eacute; aplicada &agrave;  vida pr&aacute;tica, possibilitando um monitoramento do comportamento para alternar o curso das a&ccedil;&otilde;es de acordo com os resultados obtidos. Rocca e Lafer ( 2008) colocam que a flexibilidade mental &eacute; a capacidade para formar conceitos, que persevera&ccedil;&otilde;es s&atilde;o compreendidas como reflexo do envolvimento, ainda que funcional, do c&oacute;rtex pr&eacute;-frontal, porque mostra falhas na mem&oacute;ria de trabalho e na mudan&ccedil;a de estrat&eacute;gias para solu&ccedil;&atilde;o de problemas.</p>     <p>Para Malloy-Diniz, Sedo, Fuentes e Leite (2008, p. 198), a <i>&quot;flexibilidade cognitiva implica capacidade de mudar ( alternar) o curso das a&ccedil;&otilde;es ou dos pensamentos de acordo com as exig&ecirc;ncias do ambiente&quot;. </i>Assim, a capacidade de modificar estrat&eacute;gias, o curso do pensamento ou dos atos de acordo com as exig&ecirc;ncias externas envolve a flexibilidade cognitiva. O Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas &eacute; um dos instrumentos mais usados para avalia&ccedil;&atilde;o das fun&ccedil;&otilde;es executivas e, quando ocorrem muitos erros, indica dificuldades na flexibilidade cognitiva. O WCST &eacute; considerado uma significativa medida de flexibilidade cognitiva, aten&ccedil;&atilde;o e impulsividade.</p>     <p>Dentro desse contexto, o teste WCST &eacute; um instrumento que avalia o racioc&iacute;nio abstrato e a capacidade do individuo para gerar estrat&eacute;gias de solu&ccedil;&atilde;o de problemas, em resposta a condi&ccedil;&otilde;es de estimula&ccedil;&atilde;o mut&aacute;veis. Sua cria&ccedil;&atilde;o foi em 1948, posteriormente sendo ampliado e revisado. Direcionado para a popula&ccedil;&atilde;o geral passou a ser empregado, cada vez mais, como um instrumento de avalia&ccedil;&atilde;o neuropsicol&oacute;gica de fun&ccedil;&otilde;es executivas que envolvem os lobos frontais (Huber, 1992).</p>     <p>Entendendo a poss&iacute;vel presen&ccedil;a de preju&iacute;zos funcionais no desempenho da tarefa no WCST em idosos com DM2, este estudo objetiva verificar as caracter&iacute;sticas das publica&ccedil;&otilde;es indexadas nos anos de 2000 a 2008, que abordam os temas Diabetes Tipo 2, idosos, flexibilidade cognitiva, fun&ccedil;&otilde;es cognitivas e Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas (WCST).</p>     ]]></body>
<body><![CDATA[<p><b>M&eacute;todo</b></p>     <p>Por meio de uma revis&atilde;o sistem&aacute;tica (Coutinho, 2003), foi realizada a an&aacute;lise de publica&ccedil;&otilde;es presentes nas bases de dados, a partir de um levantamento dos &uacute;ltimos oito anos nos indexadores e fontes Index Medline, LILACS, Psycinfo, Capes-Peri&oacute;dicos, Scielo, Cochrane, Proquest, Bireme, ferramentas de busca web (Yahoo, Google, Altavista), usando os descritores: Diabetes Tipo 2, Idosos, Flexibilidade Cognitiva, Flexibilidade Mental, fun&ccedil;&otilde;es executivas e Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas - WCST (Diabetes Type 2, old or older or old people or age elder or aging, <i>Wisconsin Card Sorting Test </i> - WCST), Wisconsin Card Sorting Test elderly, diabetes cognitive functions, diabetes type 2 elderly, WCST diabetes type 2 elderly, cognitive flexibility, cognitive flexibility aged elderly, flexibility mental elderly e Diabetes elderly. Por fim, foram avaliadas as refer&ecirc;ncias dos artigos encontrados, tendo como objetivo identificar outros estudos que n&atilde;o tinham sido encontrados. Os estudos foram localizados, separados e analisados de acordo com o tema desta pesquisa, DM2, WCST, idosos, flexibilidade cognitiva e mental e fun&ccedil;&otilde;es executivas.</p>     <p>A an&aacute;lise do material ocorreu a partir dos seguintes crit&eacute;rios: base de dados, ano de publica&ccedil;&atilde;o, pa&iacute;s de origem, tipo de delineamento, cruzamento de vari&aacute;veis, resultados e conclus&otilde;es dos estudos. Os dados foram analisados de forma descritiva atrav&eacute;s de freq&uuml;&ecirc;ncias percentuais.</p>     <p><b>Resultados</b></p>     <p>Foram identificados 6756 estudos relacionados ao tema DM, sendo muitos descartados por n&atilde;o estarem relacionados com a tem&aacute;tica desta pesquisa. Os estudos foram reduzidos de acordo com o tema e o ano de publica&ccedil;&atilde;o, e apenas 30 estudos usaram o descritor &quot;Diabetes&quot; no seu t&iacute;tulo. Estes estudos n&atilde;o utilizaram no t&iacute;tulo o Teste Wisconsin de Classifica&ccedil;&atilde;o de Cartas <i>(Wisconsin Card Sorting Test) </i>ou WCST, sigla pela qual o teste &eacute; conhecido internacionalmente. Buscando pelos descritores Diabetes Tipo 2 e Idosos, foram encontrados 948 estudos. Cruzando os descritores Diabetes Tipo 2 e Teste <i>Wisconsin </i>Classifica&ccedil;&atilde;o de Cartas ou WCST foram localizados 87 estudos.</p>     <p>As buscas nos bancos de dados se referem aos anos de 2000 at&eacute; 2008. Inicialmente, foram localizados 6756 estudos com o descritor &quot;Diabetes <i>elderly&quot;, </i>sendo desta soma total 21,39% encontrados no LILACS, 54,69% no PubMed/Medline, 22,95% no COCHRANE e 0,97% no SciELO. Com as palavras-chave Diabetes type 2 elderly foram localizados apenas 3 estudos no SciELO. Assim, conforme se associaram os descritores, &quot;WCST, Diabetes type 2, elderly&quot;, que est&atilde;o relacionados mais especificamente com este trabalho, n&atilde;o foi encontrado nenhum estudo. Como pode ser observado na <a href="#t1">Tabela 1</a>.</p>     <p>Tendo como objetivo identificar os estudos sobre Diabetes Tipo 2, idosos e WCST foram usados os descritores &quot;Diabetes, elderly, Wisconsin Card Sorting Test&quot; nas bases de dados, localizando-se apenas 2 estudos no per&iacute;odo de 2000 at&eacute; 2008. Os resultados podem ser observados na <a href="#t1">Tabela 1</a>.</p>     <p>Trabalhos com os descritores &quot;Wisconsin Card Sorting Test, elderly&quot; foram encontrados 33 estudos, com 0,09% no LILLACS, 54,54 % no PubMed/Medline, 36,36% no COCHRANE e nenhum estudo no SciELO. J&aacute; com as palavras-chave &quot;Diabetes, cognitive functions&quot; foram localizados 64 estudos, com 0,01% no LILLACS, 32,81% no PubMed/Medline, 62,50% no COCHRANE e 0.03%no SciELO. Tamb&eacute;m especificados na <a href="#t1">Tabela 1</a>.N&atilde;o foram encontrados estudos envolvendo os descritores <i>&quot;Cognitive flexibility&quot;, &quot;Cognitive flexibility aged elderly&quot; e &quot; Flexibility mental elderly&quot;</i></p>     <p></p>     <p align="center"><a name="t1"><img src="img/revistas/rups/v9n3/v9n3a08t1.jpg"></a></p>     ]]></body>
<body><![CDATA[<p>A fim de ilustrar esta revis&atilde;o, foram reunidos 22 estudos na <a href="#t2">Tabela 2</a>; destes, tr&ecirc;s estudos mais se aproximam dos objetivos do trabalho s&atilde;o os de: Watari et al. (2006), com amostra de 20 participantes com DM2, 34 controles, de 30 a 80 anos de idade com instrumento WCST. Os achados mostraram que diab&eacute;ticos deprimidos mostram pior aten&ccedil;&atilde;o, informa&ccedil;&atilde;o e velocidade do executivo.</p>     <p>Outra pesquisa realizada por Seyfaddini (2006), com uma popula&ccedil;&atilde;o de 50 sujeitos com DM e 48 Controles n&atilde;o diab&eacute;ticos, de 25 a 65 anos de idade, utilizando o WCST, MMSE, conclu&iacute;ram que os problemas cognitivos eram oito vezes maiores nos participantes com DM. No MMSE, n&atilde;o houve diferen&ccedil;a significativa. Este estudo salienta o decl&iacute;nio cognitivo significativo de pacientes com DM se comparados ao grupo controle. Nas bases de dados n&atilde;o foram encontrados mais estudos emp&iacute;ricos similares a este estudo.</p>     <p>Finalizando, estudo envolvendo o WCST realizado por Zhao e Liu (2000), em 30 pacientes com DM2 e 30 controles, de 40 a 60 anos, relata que os pacientes com DM2 mostraram diminu&iacute;da mem&oacute;ria, aten&ccedil;&atilde;o, habilidade de generalizar e flexibilidade do pensamento e, ainda, inibi&ccedil;&atilde;o causada por hipofun&ccedil;&atilde;o de fluxo sang&uuml;&iacute;neo cerebral frontal e temporal.</p>     <p>Na <a href="#t3">Tabela 3</a>, foram reunidos estudos de revis&atilde;o considerando os indiv&iacute;duos com DM2 associada a altera&ccedil;&otilde;es quanto ao decl&iacute;nio cognitivo, risco de dem&ecirc;ncia e risco a depress&atilde;o. Estes estudos tamb&eacute;m referem fun&ccedil;&otilde;es de mem&oacute;ria verbal, aprendizagem, efici&ecirc;ncia psicomotora.</p>     <p>Buscando artigos publicados no idioma portugu&ecirc;s, foram localizados 5 estudos desde o ano de 2002. Hamdan e Bueno (2005) compararam e relacionaram o desempenho de idosos com comprometimento Cognitivo Leve e Dem&ecirc;ncia do Tipo Alzheimer em testes de fun&ccedil;&otilde;es executivas e de mem&oacute;ria epis&oacute;dica verbal. Foram utilizados os testes para avalia&ccedil;&atilde;o das fun&ccedil;&otilde;es executivas: <i>Wisconsin Card Sorting Test, Random Number Generation, Trail Making Test, Reading Span Test, Brow-Peterson Test </i>e Flu&ecirc;ncia Verbal sem&aacute;ntica e fonol&oacute;gica. Treze idosos do grupo controle foram equiparados quanto &agrave;  idade e escolaridade com  nove idosos com comprometimento Cognitivo Leve e oito idosos com Dem&ecirc;ncia Tipo Alzheimer. Nos resultados, foram encontradas diferen&ccedil;as e associa&ccedil;&otilde;es estatisticamente significativas em rela&ccedil;&atilde;o aos testes de fun&ccedil;&otilde;es executivas entre os grupos pesquisados. No <i>Wisconsin Card Sorting Test, o </i>n&uacute;mero de categorias completadas pelos idosos controles foi significativamente maior em rela&ccedil;&atilde;o aos idosos com Dem&ecirc;ncia do Tipo Alzheimer, mas n&atilde;o em rela&ccedil;&atilde;o aos idosos com Comprometimento Cognitivo Leve.</p>      <p align="center"><a name="t2"><img src="img/revistas/rups/v9n3/v9n3a08t2.jpg"></a></p>      <p align="center"><a name="t3"><img src="img/revistas/rups/v9n3/v9n3a08t3.jpg"></a></p>     <p><i>Notas </i>= ADAS:Alzheimer's Disease Assessment Scale; ADL: Instrumental Activities of Daily Living; ADL: Activities of Daily Living; AVLT: Rey Auditory Verbal Learning Test; BDAE: Boston Diagnostic Aphasia Examination; BNT: Boston Naming Test; BVFT: Borkowski; BVRT: Benton Visual Retention Test; CERAD: Consortium to Establish a Registry for Alzheimer's Disease; BSAT: Brixton Spatial Anticipation Test; CDT: Clock-Draving Test; CIB: Clockin-a-box; CNTAB: Cambridge Neuropsychological Test Automated Battery; CVAT:Controlled Words Association Test; CVLT: Calif&oacute;rnia Verbal Learning Test; CRT Choice Reactikon Time; DM: Diabetes <i>Mellitus; </i>DM1: Diabetes <i>Mellitus </i>Tipo 1; DM2: Diabetes <i>Mellitus </i>Tipo 2; DNART (QI): Dutch National Adult Reading Test ; DS: Digit Span da WMS; DR: Desenho do Rel&oacute;gio; DSST ou DSS:Digit Symbol Substitution Test ( WAIS-R); DST: Digit Symbol Test; DAS: Disease Assessment Scale; EBS: East Boston Story; EBMT: East Boston Memory Test; ERPs: Event Related Potentials; FSR: Framingham Stroke Risk; FV: Flu&ecirc;ncia Verbal; GDS: Escala de Depress&atilde;o Geri&aacute;trica; GMT: Guild Memory Test; HAM-D: Hamilton Depression Scale; IQCODE: Informant Questionnaire for Cognitive Decline in the Elderly; IT: Information Task; I.T.: Inspection Time; JLO: Judgment of Line Orientation; LLT: Location Learning Test; LSOA II: Second Longitudinal Study; MDRS: Mattis Dementia Rating Scale; MV: Mem&oacute;ria Verbal; MEEM:Mini Exame do Estado Mental; MR: Memory-in-Reality; NART: National Adult Reading Test; NC: Number Comparison; PST ou P. Speed: Perceptual Speed Test; PMT: Picture Memory Test; PS: Procurar S&iacute;mbolos-WAIS-III; RDT: Rosen drawing Test; Rey-O: Rey-Osterrrieth Complex Figure; RTReading Test; RVAT: Rey Verbal Auditory Test; SRT: Selective Reminding Test; SILS: Shipley Institute of Living Scale; SDMT: Symbol Digit Modalities Test; SPM: Standard Progressive Matrices; TAAVR: Teste de Aprendizado Auditivo Verbal de Rey; TICS: Telephone Interview for Cognitive Status; TMT- B: Trail Making Test Parte B; TMT-A: Trail Making Test Parte A; VCD: Visual Change Detection; VFT: Verbal Fluency Test; VLT: Verbal Learning Test; VMT:Verbal Meaning Test; VT: Vocabulary test; WAIS-R: Escala de Intelig&ecirc;ncia Wechsler-Revisada; WCST: Wisconsin Card Sorting Test; WMS-R:Escala Wechsler de Mem&oacute;ria Revisada; WLM: Word List Memory; WLR: Word List Recall; WLR: Word List Regnition.</p>     <p>A segunda publica&ccedil;&atilde;o nacional identificada nestes &uacute;ltimos cinco anos teve como objetivo a associa&ccedil;&atilde;o entre depend&ecirc;ncia de coca&iacute;na e crack e desempenho cognitivo, de Cunha, Nicastri, Gomes, Moino e Peluso (2004). Uns dos instrumentos utilizados foram: <i>Wisconsin Card Sorting  Test - WCST, </i>Vocabul&aacute;rio<i>-D&iacute;gitos Diretos-DD </i>e <i>D&iacute;gitos Indiretos-DI WAIS-R, Trail Making Test  -TMT, Stroop Color Word Test-SCWT e Buschke Selective Reminding Test-BSRT. </i>Estes instrumentos foram aplicados em 15 dependentes de coca&iacute;na, em abstin&ecirc;ncia por duas semanas, em tratamento em regime de interna&ccedil;&atilde;o, e em 15 sujeitos controles, n&atilde;o usu&aacute;rios de drogas, pareados por idade, sexo, escolaridade, n&iacute;vel socioecon&oacute;mico, lateralidade e QI. Achados preliminares mostraram significa&ccedil;&atilde;o estat&iacute;stica (p &lt; 0,05) em testes capacidade de aprendizagem, fun&ccedil;&otilde;es executivas, de aten&ccedil;&atilde;o, flu&ecirc;ncia verbal, mem&oacute;ria visual e mem&oacute;ria verbal. O estudo mostrou altera&ccedil;&otilde;es no desempenho dos pacientes dependentes de coca&iacute;na/crack no WCST. Os resultados indicaram que o abuso de coca&iacute;na est&aacute; associado a d&eacute;ficits cognitivos, semelhantes aos que ocorrem em transtornos cognitivos, possivelmente relacionados a problemas em &aacute;reas cerebrais temporais e pr&eacute;-frontais.</p>     <p>O terceiro artigo nacional utilizando o WCST contou com uma amostra de 32 indiv&iacute;duos com tentativa de suic&iacute;dio, pareados a 32 indiv&iacute;duos sem hist&oacute;ria de tentativa de suic&iacute;dio. Keller e Werlang (2005) buscaram avaliar a flexibilidade para resolu&ccedil;&atilde;o de problemas em indiv&iacute;duos que tentaram suic&iacute;dio. Os instrumentos utilizados foram: Teste Wisconsin de Classifica&ccedil;&atilde;o de Cartas (WCST),  MINI- Mini-International Neuropsychiatric Interview, Teste de Stroop de Cores e Palavras, BHS-Escala de Desesperan&ccedil;a de Beck, subtestes Vocabul&aacute;rio, Cubos e C&oacute;digos (WAIS-III). No Teste Stroop e nas categorias do WCST dos sujeitos com tentativa de suic&iacute;dio, os escores foram inferiores. Os achados mostraram que tentadores de suic&iacute;dio apresentam maiores n&iacute;veis de desesperan&ccedil;a, menos flexibilidade para resolu&ccedil;&atilde;o de problemas do que os indiv&iacute;duos sem hist&oacute;ria de tentativa de suic&iacute;dio; o que demonstra uma associa&ccedil;&atilde;o entre a desesperan&ccedil;a e a defici&ecirc;ncia na flexibilidade para resolu&ccedil;&atilde;o de problemas.</p>     ]]></body>
<body><![CDATA[<p>O quarto artigo que utilizou o teste Wisconsin de Classifica&ccedil;&atilde;o de cartas foi de Abel et al. (2006), buscou comparar as fun&ccedil;&otilde;es executivas de pacientes com Doen&ccedil;a de Parkinson e com pacientes com doen&ccedil;a degenerativa cerebelar. Os resultados indicaram que os pacientes com doen&ccedil;a degenerativa cerebelar evidenciaram desempenho pior nos erros n&atilde;o perseverativos e perseverativos. Os achados mostraram que os pacientes com doen&ccedil;a degenerativa cerebelar apresentam d&eacute;ficits maiores nas fun&ccedil;&otilde;es executivas e disfun&ccedil;&atilde;o pr&eacute;-frontal.</p>     <p>O quinto artigo publicado no Brasil utilizando o WCST ( Rigoni, Oliveira, Moraes &amp; Zambom, 2007), teve como objetivo comparar o desempenho das fun&ccedil;&otilde;es cognitivas de 30 usu&aacute;rios de maconha e 30 n&atilde;o usu&aacute;rios de 14 a 17 anos de idade. Foi utilizado tamb&eacute;m, entrevista estruturada, o <i>Screening </i>Cognitivo (WISC-III e WAIS-III) e as Figuras Complexas de Rey. Os resultados mostraram que houve diferen&ccedil;a estatisticamente significativa no desempenho dos dois grupos em todos os instrumentos aplicados, com maior preju&iacute;zo no desempenho do WCST e do subteste C&oacute;digos ( WAIS-III e WISC-III).</p>     <p>Na literatura internacional, o levantamento sobre estudos utilizaram o Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas (WCST) mostrou que os idosos com DM tendem a apresentar preju&iacute;zos significativos, sustentando a hip&oacute;tese da exist&ecirc;ncia da rela&ccedil;&atilde;o entre DM e defici&ecirc;ncia org&aacute;nica (Seyfaddini, 2006). As deteriora&ccedil;&otilde;es cognitivas caracterizam-se, especialmente, por diminu&iacute;da velocidade mental e flexibilidade mental. O estudo de coorte foi realizado para distinguir a rela&ccedil;&atilde;o da DM e disfun&ccedil;&atilde;o cognitiva em um grupo de participantes com DM2 e 48 do grupo controle, sem a enfermidade. Os instrumentos do estudo foram o WCST e o MEEM. No MEEM, n&atilde;o mostrou diferen&ccedil;a significativa entre os dois grupos. No WC-ST os diab&eacute;ticos mostraram pior desempenho. Os achados identificaram que os problemas cognitivos eram oito vezes maiores nos Diab&eacute;ticos do que no grupo controle.</p>     <p>Foram encontrados quatro trabalhos sobre Teste <i>Wisconsin </i>Classifica&ccedil;&atilde;o de Cartas e DM2, a partir de 2004, por&eacute;m nenhum deles abordou a tem&aacute;tica, WCST, DM2 e idosos. O estudo que mais se aproxima &eacute; o do Watari et al. (2006) que buscou avaliar as fun&ccedil;&otilde;es executivas em adultos com DM2 e depress&atilde;o maior. Os sujeitos estudados foram adultos de 30 a 80 anos de idade, com DM e depress&atilde;o (idade m&eacute;dia 57,90-DP 11,14), com DM sem depress&atilde;o (idade m&eacute;dia = 58,90 DP = 9,20) e grupo controle (idade m&eacute;dia 61,03 DP-14,76).</p>     <p>Para o diagn&oacute;stico de Depress&atilde;o, foram utilizados os crit&eacute;rios do DSM-IV. Os resultados apontaram diferen&ccedil;as significativas no funcionamento cognitivo global, mostrando defici&ecirc;ncia cognitiva maior que nos controles.</p>     <p>Em estudo anterior a 2004, em que foram utilizados os instrumentos <i>Stroop Color-Word Test, Trail Making Part B, Wisconsin Card Sorting Test, and Word and Category Fluency, </i>Delano-Wood (2002), para a avalia&ccedil;&atilde;o da rela&ccedil;&atilde;o entre flexibilidade cognitiva depress&atilde;o e ansiedade em idosos, cujos participantes foram 281 idosos, com idades entre 55 a 86 anos, os resultados apontaram que depress&atilde;o e a idade predizem significativamente a inflexibilidade cognitiva.</p>     <p>Na avalia&ccedil;&atilde;o dos padr&otilde;es de d&eacute;ficits cognitivos em idosos com DM, Qiu et al. (2006) apresentam um estudo em 290 sujeitos, sendo 40% destes com DM. Os resultados mostraram que as fun&ccedil;&otilde;es executivas dos idosos com DM estavam mais prejudicadas do que naqueles sem DM. Na avalia&ccedil;&atilde;o da mem&oacute;ria, os idosos com DM tamb&eacute;m mostraram decl&iacute;nio, sugerindo defici&ecirc;ncias frontais org&aacute;nicas, que podem estar associadas &agrave;  doen&ccedil;a microvascular, que a DM pode fazer. Um estudo realizado em idosos com mais de 70 anos com DM, utilizando MMSE e Escala de Depress&atilde;o Geri&aacute;trica, concluiu que idosos com DM apresentam risco de desenvolver problemas cognitivos, e, em rela&ccedil;&atilde;o ao grupo controle, os diab&eacute;ticos mostraram disfun&ccedil;&atilde;o executiva (Munshi et al., 2006).</p>     <p>E importante destacar que as publica&ccedil;&otilde;es em que s&atilde;o utilizados os descritores Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas-WCST, idosos, DM2 s&atilde;o muito reduzidas. A partir dos resultados desta revis&atilde;o, foram encontrados na literatura apenas tr&ecirc;s estudos que atendiam aos descritores associados. A maioria dos estudos foi descartada por estes n&atilde;o estarem relacionados com o objetivo aqui proposto; por&eacute;m, as tabelas que ilustram este estudo mostram, mesmo atrav&eacute;s de outros instrumentos, at&eacute; mesmo de neuroimagem, que a DM2 causa preju&iacute;zos significativos nas fun&ccedil;&otilde;es cognitivas.</p>     <p>Nesses &uacute;ltimos cinco anos, foram identificados cinco estudos brasileiros sobre o teste <i>Wisconsin </i>de classifica&ccedil;&atilde;o de cartas. A maioria utilizou delineamento transversal. A partir do ano de 2002, estudos de caso controle foram predominantemente desenvolvidos utilizando o teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas em idosos com DM2.</p>     <p>Quanto aos estudos encontrados na literatura internacional envolvendo DM2, todos demonstram estar esta associada &agrave;  disfun&ccedil;&atilde;o cognitiva em algum grau, mesmo que n&atilde;o tenham sido encontrados estudos com a mesma popula&ccedil;&atilde;o aqui estudada, e com o instrumento WCST. Entretanto, foram utilizados outros instrumentos de avalia&ccedil;&atilde;o que identificaram preju&iacute;zos nas fun&ccedil;&otilde;es cognitivas associadas com a DM2 em popula&ccedil;&otilde;es de idades diferentes. Dentre os preju&iacute;zos mais evidenciados nos estudos, (Tiehuis et al., 2008) mencionam o funcionamento cognitivo prejudicado, les&otilde;es e atrofia cortical (Brands, Biessels, Haan, Kapplle &amp; Kessels, 2007), hipocampo prejudicado e mem&oacute;ria declarativa (Bruehl et al., 2007).</p>     ]]></body>
<body><![CDATA[<p>Outros estudos identificados (Harten, Osterman, Loon, Scheltens &amp; Weisntein, 2007), envolvendo idosos com idade m&eacute;dia de 73 anos, mostram que a DM &eacute; um fator de risco para diminui&ccedil;&atilde;o da fun&ccedil;&atilde;o cognitiva. Aumento de atrofia, redu&ccedil;&atilde;o do hipocampo, d&eacute;ficits cerebrais, de velocidade de processamento, mem&oacute;ria, intelig&ecirc;ncia, aten&ccedil;&atilde;o, al&eacute;m de reduzida velocidade psicomotora e velocidade de processamento verbal foram identificados quando comparados a grupos controles (Gold et al., 2007; Verdelho et al., 2007).</p>     <p>Finalizando, um estudo, utilizando o MEEM e GDS (Munshi et al., 2006) em idosos de 70 a 93 anos com DM2, encontrou d&eacute;ficits nas &aacute;reas de efici&ecirc;ncia psicomotora, mem&oacute;ria sem&aacute;ntica, epis&oacute;dica e de trabalho, assim como anormalidades nas fun&ccedil;&otilde;es executivas relacionadas a comportamentos complexos, como a resolu&ccedil;&atilde;o de problemas, planejamento, organiza&ccedil;&atilde;o, perspic&aacute;cia racioc&iacute;nio e aten&ccedil;&atilde;o.</p>     <p><b>Considera&ccedil;&otilde;es finais</b></p>     <p>A partir desta busca, no que tange ao objetivo proposto neste trabalho, que &eacute; verificar as caracter&iacute;sticas das publica&ccedil;&otilde;es sobre o desempenho cognitivo de idosos com DM2 atrav&eacute;s do Teste <i>Wisconsin </i>de Classifica&ccedil;&atilde;o de Cartas-WCST, os estudos apontaram para um preju&iacute;zo na <i>performance </i>em idosos com DM2.</p>     <p>Na an&aacute;lise da tem&aacute;tica pesquisada, observou-se que a maioria dos <i>abstracts </i>identificados n&atilde;o apresenta clareza quanto &agrave;  metodologia empregada; muitos n&atilde;o descrevem os instrumentos utilizados, idade da amostra; enfim, a metodologia n&atilde;o est&aacute; explicitada; o que limitou o passo inicial de uma revis&atilde;o.</p>     <p>No que se relaciona aos estudos emp&iacute;ricos encontrados, mesmo utilizando outros instrumentos, mostrou-se comprometimento em muitas fun&ccedil;&otilde;es. Isso indica que, mesmo sem a utiliza&ccedil;&atilde;o do WCST, os achados destes outros instrumentos apontam para algum tipo de funcionamento cognitivo prejudicado em estudos envolvendo a DM2.</p>     <p>Nos estudos revisados, a maioria mostrou um grau de comprometimento relacionado com as fun&ccedil;&otilde;es cognitivas, ou seja: flexibilidade do pensamento, aten&ccedil;&atilde;o, mem&oacute;ria de trabalho, sugerindo, inclusive, que a DM2 acelera o processo de deterioro, aumentando a possibilidade de desenvolver dem&ecirc;ncia. Tamb&eacute;m se denotou que a preval&ecirc;ncia de depress&atilde;o &eacute; mais elevada em idosos com DM2; assim, tamb&eacute;m, muitas outras complica&ccedil;&otilde;es f&iacute;sicas foram identificadas.</p> <hr>     <p><b>Refer&ecirc;ncias</b></p>     <!-- ref --><p>Abel, C. G., Stein, G., Pereyra, S., Nano, G., Arakaki, T, Garretto, N. et al. (2006). Comparison study of executive functions in Parkinson's disease and degenerative cerebelar disease's patients. <i>Ar. Neuropsiquiatr., 64 </i>(3B), 814-826.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000081&pid=S1657-9267201000030000800001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     ]]></body>
<body><![CDATA[<!-- ref --><p>Akisaki, T, Sakurai, T., Takata T, Umegaki, H., Araki, A., Mizumo, S. et al. (2006). Cognitive dysfunction associates with white matter hyper intensities and subcortical atrophy on magnetic resonance imaging of the elderly diabetes mellitus Japanese elderly diabetes intervention trial (J-EDIT). <i>Diabetes Metabolism Research an Rewiews, </i>22, 376-384.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000083&pid=S1657-9267201000030000800002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Allen K. V., Frier, B. M., Strachan, M. W. (2004) .The relationship between type 2 diabetes and cognitive dysfunction: Longitudinal studies and their methodological limitations. <i>Euro J. Pharmacology,490 </i>(1-3), 169-175.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000085&pid=S1657-9267201000030000800003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>     <!-- ref --><p>Amarilho, C. B. &amp; Carlos, S. A. (2005). Executiveenterpriser, his retirement and the removal from works process. <i>UnATI, 8 </i>(1), 61-88.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000087&pid=S1657-9267201000030000800004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>     <!-- ref --><p>Andrade, V. M., Santos, F. H. &amp; Bueno, O. F. A. (2004).<i>Neuropsicologia hoje. </i>S&atilde;o Paulo: Artes M&eacute;dicas.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000089&pid=S1657-9267201000030000800005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Argimon, I. I. L. &amp; Stein, L. M. (2005). Habilidades cognitivas em indiv&iacute;duos muito idosos: um estudo longitudinal. <i>Cadernos de Sa&uacute;de P&uacute;blica, 21 </i>(1), 64-72.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000091&pid=S1657-9267201000030000800006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     ]]></body>
<body><![CDATA[<!-- ref --><p>Arvanitakis, Z., Wilson, R. S., Bienas, J. L., Evans, A. D., Li, Y. &amp; Bennett, D. A. (2004). Diabetes Mellitus and Risk of Alzheimer Disease and Decline in Cognitive Function. <i>Arch. Neurol, 61, </i>661-666.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000093&pid=S1657-9267201000030000800007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Arvanitakis, Z., Wilson, R. S., Li, Y., Aggarwal, N. T., Bennett, D. A. (2006). Diabetes and function in different cognitive systems in older individuals without dementia. <i>Diabetes Care, 29 </i>(3), 560-565.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000095&pid=S1657-9267201000030000800008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Asimakopoulou, K. &amp; Hampson, S. E. (2002). Cognitive functioning and self-management in older people with diabetes. <i>Diabetes Spectrum, 15 </i>(2), 116-121.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000097&pid=S1657-9267201000030000800009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Aszal&oacute;s, Z. (2007). Cerebral complications of diabetes mellitus. <i>Orvi Hetil, 148, </i>2371-2376.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000099&pid=S1657-9267201000030000800010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Awad, N., Gagnon, M. &amp; Messier, C. (2004). The Relationship between impaired glucose tolerance, type 2 diabetes, and cognitive function. <i>Journal of Clinical and Experimental Neuropsychology, 26 </i>(8), 1044-1080.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000101&pid=S1657-9267201000030000800011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     ]]></body>
<body><![CDATA[<!-- ref --><p>Baudic, S., Dalla Barba, G., Thibaudet, M. C., Smagglhe, A., Remy, P. &amp; Traycov, L. (2006). Executive function deficits in early Alzheimer's disease and their relations with episodic memory. <i>Archives of Clinical Neuropsychology, 21, </i>15-21.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000103&pid=S1657-9267201000030000800012&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Bauduceau, B., Bourdel-Marchasson, I., Brocker, P. &amp; Taillia, H. (2005). The brain of the elderly diabetic patient. <i>Diabetes Metab., 31, </i>5S92-5S97.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000105&pid=S1657-9267201000030000800013&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Biessels, G. J., Kerssen, A., Haan, E. H. F. &amp; Kappelle, L. J. (2007). Cognitive dysfunction and diabetes: Implications for primary care. <i>Primary Care Diabetes, 1, </i>187-193.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000107&pid=S1657-9267201000030000800014&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Biessels, G. J., Deary, I. J. &amp; Ryan, C. M. (2008). Cognition and diabetes: A lifespan perspective. <i>Lancet Neurol, 7, </i>184-190.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000109&pid=S1657-9267201000030000800015&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>Biessels, G. J., Haan, E. H. F., Kamal, A. &amp; Bleys, R. L. A. W. (2002). Ageing and diabetes: Implications for brain function. <i>European Journal of Pharmacology, 441, </i>1-14.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=000111&pid=S1657-9267201000030000800016&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     ]]></body>
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