<?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>1646-5830</journal-id>
<journal-title><![CDATA[Acta Obstétrica e Ginecológica Portuguesa]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Obstet Ginecol Port]]></abbrev-journal-title>
<issn>1646-5830</issn>
<publisher>
<publisher-name><![CDATA[Euromédice, Edições Médicas Lda.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1646-58302017000200007</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Vaginose citolítica: uma entidade subdiagnosticada que mimetiza a candidíase vaginal]]></article-title>
<article-title xml:lang="en"><![CDATA[Cytolytic vaginosis: an underdiagnosed pathology that mimics vulvovaginal candidiasis]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soares]]></surname>
<given-names><![CDATA[Ricardo]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vieira-Baptista]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tavares]]></surname>
<given-names><![CDATA[Sara]]></given-names>
</name>
<xref ref-type="aff" rid="A1"/>
</contrib>
</contrib-group>
<aff id="AA1">
<institution><![CDATA[,Centro Hospitalar de São João  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>11</volume>
<numero>2</numero>
<fpage>106</fpage>
<lpage>112</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S1646-58302017000200007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S1646-58302017000200007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S1646-58302017000200007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[«Vulvovaginitis» are one of the main reasons that lead women to visit their gynecologist. Most physicians in this area tend to base their diagnostic evaluation on the signs, symptoms and physical examination of the patient, overlooking the microscopic evaluation of the vaginal discharge. This practice leads to a high percentage of underdiagnosed «vulvovaginitis». Cytolytic vaginosis is one of these rarely diagnosed pathologies, due to the fact that it mimics vulvovaginal candidiasis]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Cytolytic vaginosis]]></kwd>
<kwd lng="en"><![CDATA[Vulvovaginitis]]></kwd>
<kwd lng="en"><![CDATA[Lactobacillus]]></kwd>
<kwd lng="en"><![CDATA[Cytolysis]]></kwd>
<kwd lng="en"><![CDATA[Vulvovaginal candididiasis]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2"><b>ARTIGO   DE REVIS&#195;O/</B>REVIEW ARTICLE</font></p>     <p><font size="4"><b>Vaginose   citol&#237;tica: uma entidade subdiagnosticada que mimetiza a candid&#237;ase vaginal</b></font></p>     <p><font size="3"><b>Cytolytic vaginosis: an underdiagnosed pathology that mimics vulvovaginal candidiasis </b></font></p>     <p><b>Ricardo   Soares*, Pedro Vieira-Baptista**, Sara Tavares***</b></p>     <p>Centro   Hospitalar de S&#227;o Jo&#227;o</p>     <p>*Mestrado integrado em Medicina</p>     <p>**M&#233;dico Especialista em   Ginecologia/Obstetr&#237;cia, M&#233;dico especialista no Centro Hospitalar de S&#227;o Jo&#227;o</p>     <p>***M&#233;dica   no Internato de Ginecologia/Obstetr&#237;cia, M&#233;dica no Centro Hospitalar de S&#227;o   Jo&#227;o</p>     <p><a href="#c0">Endere&ccedil;o para correspond&ecirc;ncia</a> | <a href="#c0">Direcci&oacute;n para correspondencia</a> | <a href="#c0">Correspondence</a><a name="topc0"></a></p> <hr/>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><b>ABSTRACT</b></p>     <p><i>&#171;Vulvovaginitis&#187;</i> are one of the main reasons that   lead women to visit their gynecologist. Most physicians in this area tend to   base their diagnostic evaluation on the signs, symptoms and physical   examination of the patient, overlooking the microscopic evaluation of the   vaginal discharge. This practice leads to a high percentage of underdiagnosed   &#171;vulvovaginitis&#187;. Cytolytic vaginosis is one of these rarely diagnosed pathologies, due to the fact that it mimics vulvovaginal candidiasis.</p>     <p><b>Keywords: </b>Cytolytic   vaginosis; Vulvovaginitis; <i>Lactobacillus</i>; Cytolysis; Vulvovaginal   candididiasis.</p> <hr/>     <p>&nbsp;</p>    <p><b>Introdu&#231;&#227;o</b></p>     <p>A   vagina &#233; um &#243;rg&#227;o que, para assegurar a integridade do seu ecossistema,   necessita de uma intera&#231;&#227;o equilibrada entre a flora vaginal, o estado   hormonal, os produtos do metabolismo microbiano e a resposta imune do   hospedeiro<sup>1, 2</sup>. O pH vaginal, que normalmente, em idade f&#233;rtil, se   situa entre 3,8 e 4,5, &#233; produto destas intera&#231;&#245;es, funcionando como primeira   linha de defesa contra a prolifera&#231;&#227;o de microrganismos patog&#233;nicos na flora   vaginal<sup>3-5</sup>. De facto, a composi&#231;&#227;o da flora n&#227;o &#233; est&#225;tica, variando   ciclicamente e de mulher para mulher, em resposta a fatores tanto intr&#237;nsecos   (ciclo menstrual, altera&#231;&#245;es hormonais ou doen&#231;as), como extr&#237;nsecos (antibi&#243;ticos,   uso de contracetivos, atividade sexual ou traumatismo)<sup>2, 6-8</sup>. A   altera&#231;&#227;o do balan&#231;o da flora pode levar ao aparecimento de &#171;vulvovaginites&#187;,   que s&#227;o caracterizadas por sintomatologia vulvar e vaginal, como prurido, dor,   corrimento, dis&#250;ria e dispareunia. Sendo as &#171;vulvovaginites&#187; um dos principais   motivos de consulta em ginecologia, torna-se crucial o seu diagn&#243;stico   preciso, evitando, assim, poss&#237;veis implica&#231;&#245;es psicol&#243;gicas, financeiras e   sexuais da paciente<sup>1,9-11</sup>. </p>     <p>A   vaginose bacteriana (ou bacteriose vaginal), a candid&#237;ase (ou candidose   vaginal) e a tricomon&#237;ase constituem aproximadamente 90% de todos os   diagn&#243;sticos de &#171;vulvovaginite&#187;<sup>12</sup>. Embora a grande maioria dos casos   se enquadre nestas 3 patologias, &#233; nos restantes 10% que reside o verdadeiro   desafio diagn&#243;stico. De facto, existe um n&#250;mero consider&#225;vel de pacientes com   uma apresenta&#231;&#227;o cl&#237;nica em tudo semelhante a um quadro de candidose vaginal   que sofrem de uma patologia denominada vaginose citol&#237;tica<sup>13</sup>. </p>     <p><b>Materiais e m&#233;todos</b></p>     <p>Foi   realizada uma revis&#227;o da literatura nas bases de dados MEDLINE e PubMed.   Utilizando os termos &#171;<i>cytolytic vaginosis</i>&#187;, &#171;<i>D&#246;derlein cytolysis</i>&#187;   e &#171;<i>Lactobacillus overgrowth syndrome</i>&#187; e selecionados os artigos em   ingl&#234;s e portugu&#234;s que se revelaram adequados ao tema.</p>     <p><b>Vaginose citol&#237;tica: uma entidade subdiagnosticada</b></p>     ]]></body>
<body><![CDATA[<p><b>Ecossistema   vaginal e lactobacilos</b></p>     <p>Um   grande n&#250;mero de microrganismos patog&#233;nicos e n&#227;o patog&#233;nicos pode ser   observado na vagina, entre os quais lactobacilos<i>, Gardnerella vaginallis</i>, <i>Trichomonas vaginalis</i> e <i>Candida albicans</i>. Os lactobacilos s&#227;o os   microrganismos mais prevalentes no ambiente vaginal, sendo que j&#225; foram   identificadas mais de 80 esp&#233;cies<sup>6,10,13,14</sup>. Em termos   microbiol&#243;gicos, trata-se de uma bact&#233;ria gram-positiva, pleom&#243;rfica, anaer&#243;bia   facultativa, microaerof&#237;lica e n&#227;o formadora de esporos<sup>13,15</sup>. Estes   t&#234;m um papel fundamental na manuten&#231;&#227;o do pH &#225;cido da vagina, atrav&#233;s da   convers&#227;o do glicog&#233;nio em &#225;cido l&#225;ctico<sup>16</sup>. Outros produtos do   metabolismo desta bact&#233;ria incluem o per&#243;xido de hidrog&#233;nio (H<sub>2</sub>O<sub>2</sub>),   produzido por esp&#233;cies como o <i>L. crispatus </i>e o<i> L. jensenii</i> e   bacteriocinas como a <i>Gassericina A</i><sup>17,18</sup>.</p>     <p>Os   lactobacilos<i> </i>tamb&#233;m inibem o crescimento excessivo de microrganismos   como <i>Gardnerella vaginallis</i>, <i>E. coli, Candida albicans </i>e <i>Mobiluncus     spp</i>.<sup>16</sup>. De facto, foi demonstrado que a presen&#231;a de lactobacilos   no corrimento vaginal poder&#225; ser um fator de prote&#231;&#227;o contra a candidose   vaginal<sup>19</sup>. De entre os mecanismos que promovem esta prote&#231;&#227;o por   parte dos lactobacilos enumeram-se: produ&#231;&#227;o de subst&#226;ncias antimicrobianas (H<sub>2</sub>O<sub>2</sub> e bacteriocinas), inibi&#231;&#227;o da ader&#234;ncia de fungos &#224;s c&#233;lulas epiteliais da   parede vaginal, competi&#231;&#227;o por recetores e por nutrientes<sup>20-22</sup>.</p>     <p>Para   al&#233;m disso, a import&#226;ncia de uma popula&#231;&#227;o normal de lactobacilos parece ir   al&#233;m do universo das &#171;vulvovaginites&#187;, tendo a sua deple&#231;&#227;o sido associada a   maior incid&#234;ncia de doen&#231;a inflamat&#243;ria p&#233;lvica, infe&#231;&#227;o p&#243;s-cir&#250;rgica, maior   probabilidade de infec&#231;&#227;o pelo v&#237;rus da imunodefici&#234;ncia humana, de displasia   cervical e de corioamnionites<sup>23-26</sup>.</p>     <p><b>Defini&#231;&#227;o   e fisiopatologia</b></p>     <p>Algumas   mulheres, em idade reprodutiva, podem ter uma prolifera&#231;&#227;o an&#243;mala de   lactobacilos na sua vagina. A etiologia deste aumento de carga bacteriana n&#227;o   foi ainda devidamente esclarecida, sendo que, a influ&#234;ncia hormonal &#233; uma das   teorias ainda n&#227;o comprovadas<sup>13,27,28</sup>.&#160; Nessas mulheres, o n&#250;mero   excessivo de lactobacilos<i>,</i> isoladamente ou em associa&#231;&#227;o a outras   bact&#233;rias, pode promover uma extensa cit&#243;lise das c&#233;lulas da camada interm&#233;dia   da vagina, culminando numa entidade denominada vaginose citol&#237;tica (VC)<sup>6,13,29</sup>.&#160;   Uma poss&#237;vel explica&#231;&#227;o para a ocorr&#234;ncia desta cit&#243;lise &#233; a de que a excessiva   glic&#243;lise, como consequ&#234;ncia deste aumento da carga bacteriana, leve &#224; produ&#231;&#227;o   de uma grande quantidade de &#225;cido l&#225;ctico, que se traduz num pH mais &#225;cido que   o normal. De facto, mulheres que t&#234;m elevados n&#237;veis s&#233;ricos de glicose (p.e. <i>diabetes     mellitus</i>) poder&#227;o estar mais propensas a desenvolver VC, dado haver maior   disponibilidade de&#160; substrato para o metabolismo dos lactobacilos<sup>30</sup>.&#160; </p>     <p>Como   foi referido, as c&#233;lulas da camada interm&#233;dia da vagina s&#227;o as mais acometidas   pela cit&#243;lise, porque s&#227;o as mais prop&#237;cias a ter um sobrecrescimento de   lactobacilos na sua superf&#237;cie<i>. </i>Isto deve-se ao facto de serem as   c&#233;lulas epiteliais vaginais que captam mais glicog&#233;nio/glicose<sup>13,28,31</sup>.   O papel destas c&#233;lulas foi refor&#231;ado por um estudo que concluiu que a cit&#243;lise   era mais frequente em situa&#231;&#245;es que cursavam com o seu predom&#237;nio: fase   pr&#233;-menstrual, durante a gravidez e no in&#237;cio da menopausa<sup>32</sup>. Nomelini<i> et al</i>. acrescentaram que uma flora citol&#237;tica (n&#250;mero elevado de   lactobacilos) era mais prevalente na segunda fase do ciclo menstrual (fase   l&#250;tea)<sup>10, 14</sup>. Ainda dentro desta linha de pensamento, o facto de os   estrog&#233;nios influenciarem a deposi&#231;&#227;o de glicog&#233;nio nas c&#233;lulas epiteliais da   vagina, levou &#224; estipula&#231;&#227;o, ainda n&#227;o confirmada, que houvesse uma influ&#234;ncia   hormonal na fisiopatologia da VC<sup>33</sup>.</p>     <p>Em   rela&#231;&#227;o ao &#225;cido l&#225;ctico, h&#225; evid&#234;ncia da exist&#234;ncia de dois tipos no   ecossistema vaginal: o &#225;cido l&#225;ctico-L (AL-L) e o &#225;cido l&#225;ctico-D (AL-D)<sup>4,34</sup>.   O AL-L &#233; produzido pelas c&#233;lulas epiteliais das paredes vaginais, lactobacilos   e outras bact&#233;rias. Este, n&#227;o s&#243; mantem a acidez vaginal, como tamb&#233;m participa   em atividades do sistema imunit&#225;rio: ativa a subclasse Th17 dos linf&#243;citos T,   estimula as c&#233;lulas epiteliais da vagina a libertar citocinas pr&#243;-inflamat&#243;rias   na presen&#231;a de ARN viral e &#233; um potente inibidor das bact&#233;rias associadas &#224;   vaginose bacteriana<sup>4,35</sup>. J&#225; o AL-D &#233; quase exclusivamente produzido   pelos lactobacilos<i>.</i> Destes, salientam-se:&#160; <i>L. crispatus, L. gasseri</i> e <i>L. jensenii</i><sup>34</sup>. A fun&#231;&#227;o desta variante do &#225;cido l&#225;ctico   ainda n&#227;o foi devidamente esclarecida. No entanto, &#233; sugerido que o <i>ratio</i> AL-L/AL-D pode regular a produ&#231;&#227;o local de um indutor da metaloproteinase da   matriz extracelular (EMMPRIN) pelas c&#233;lulas epiteliais<sup>34</sup>. Este, &#233; um   co-fator essencial para o transportador de monocarboxilato-1, o recetor   respons&#225;vel pela regula&#231;&#227;o dos n&#237;veis intracelulares de &#225;cido l&#225;ctico e   preven&#231;&#227;o da morte celular mediada pelo &#225;cido<sup>36</sup>. Foi demonstrado que   na VC o n&#237;vel de AL-L est&#225; elevado, mas os n&#237;veis de AL-D n&#227;o, sugerindo assim   que n&#227;o ser&#227;o as esp&#233;cies de lactobacilos produtoras de AL-D a provocar o   desequil&#237;brio<sup>37</sup>. Foi tamb&#233;m proposto que a cit&#243;lise das c&#233;lulas   epiteliais seria devida ao excesso de AL-L que, na aus&#234;ncia de um aumento   concomitante de AL-D, levaria a uma redu&#231;&#227;o do pH intracelular e &#224; indu&#231;&#227;o de   necrose celular<sup>37</sup>.</p>     <p>Por   fim, um dado que &#233; comum na anamnese das doentes &#233; a hist&#243;ria de consumo de   v&#225;rios tipos de medicamentos antif&#250;ngicos. No entanto, n&#227;o se sabe se esta   medica&#231;&#227;o tem alguma influ&#234;ncia na fisiopatologia da doen&#231;a. Na verdade, esta   coincid&#234;ncia pode atribuir-se ao facto de estas doentes serem inicialmente   diagnosticadas com candidose vaginal, e medicadas para tal<sup>13,31,38</sup>. </p>     <p><b>Epidemiologia   e fatores de risco</b></p>     ]]></body>
<body><![CDATA[<p>Estima-se   que a preval&#234;ncia da VC seja de 1-7%, tendo um pico de incid&#234;ncia na idade   reprodutiva (25-40 anos)<sup>6,13,28,31,39-42</sup>.</p>     <p>Est&#225;   demonstrada a exist&#234;ncia de diferen&#231;as raciais quanto &#224; composi&#231;&#227;o da flora   vaginal. De facto, um estudo constatou que mulheres de ra&#231;a branca t&#234;m uma   preval&#234;ncia superior de uma flora mais rica em lactobacilos<i>,</i> comparativamente a mulheres de outras ra&#231;as<sup>40</sup>.</p>     <p>Para   al&#233;m disso, outro estudo comparou mulheres trabalhadoras do sexo, com 7 ou mais   rela&#231;&#245;es sexuais por semana e v&#225;rios parceiros, com mulheres monog&#226;micas com   menos de 7 rela&#231;&#245;es sexuais por semana. Os investigadores conclu&#237;ram que as   mulheres com menos rela&#231;&#245;es sexuais por semana tinham uma flora com mais   lactobacilos e mais casos de VC. Por oposi&#231;&#227;o, as trabalhadoras do sexo tinham   a flora mais populada por outros tipos de bact&#233;rias, n&#227;o tendo sido   diagnosticado nenhum caso de VC<sup>2</sup>.</p>     <p><b>Diagn&#243;stico de vaginose citol&#237;tica</b></p>     <p><b>Diagn&#243;stico   diferencial</b></p>     <p>No   que concerne aos sinais e sintomas, a VC assemelha-se muito a uma candidose   vaginal. De facto, a maior parte das mulheres que t&#234;m VC s&#227;o erradamente   diagnosticadas com candidose vaginal complicada, refrat&#225;ria ao tratamento ou   chegam mesmo, em alguns casos, a ser referenciadas para tratamento psiqui&#225;trico<sup>13,31,43</sup>.   Sendo a apresenta&#231;&#227;o cl&#237;nica em tudo semelhante, para um correto diagn&#243;stico &#233;   necess&#225;rio um elevado n&#237;vel de suspei&#231;&#227;o, especialmente se doente com hist&#243;ria   de recorr&#234;ncia a especialistas de v&#225;rias &#225;reas pela mesma queixa,   sintomatologia sistematicamente refrat&#225;ria a v&#225;rios antif&#250;ngicos/antibi&#243;ticos   ou diagn&#243;stico de candidose complicada<sup>13,31,42,44</sup>. </p>     <p>Para   al&#233;m da candidose vaginal, existe outra patologia cujos sinais e sintomas   mimetizam os da VC: a lactobacilose de D&#246;derlein. Nesta entidade, rara, existe   um aumento do tamanho dos lactobacilos<i>,</i> que tamb&#233;m &#233; acompanhado por um   aumento, mais modesto, da carga bacteriana. No entanto, n&#227;o se verifica   cit&#243;lise celular<sup>27,43</sup>.</p>     <p>O   exame microsc&#243;pico do corrimento vaginal constitui o pilar do diagn&#243;stico   diferencial entre estas patologias, o qual se revela particularmente importante   dado que o tratamento varia consoante a entidade em quest&#227;o<sup>13,27,31,39,43</sup>.   As principais diferen&#231;as microsc&#243;picas destas entidades est&#227;o descritas no <a href="#q1">Quadro I</a>.</p>     <p>&nbsp;</p>    <p align="center"><a name="q1"></a><img src="/img/revistas/aogp/v11n2/11n2a07q1.jpg"/></p>    
]]></body>
<body><![CDATA[<p>&nbsp;</p>      <p><b>Crit&#233;rios   cl&#237;nicos</b></p>     <p>Na   avalia&#231;&#227;o da doente, deve-se proceder &#224; recolha minuciosa da hist&#243;ria cl&#237;nica   da paciente e realiza&#231;&#227;o de exame ginecol&#243;gico. Este deve incluir a recolha de   amostras de corrimento vaginal para exame microsc&#243;pico a fresco<sup>13 </sup>e   determina&#231;&#227;o do pH. </p>     <p><b>Hist&#243;ria cl&#237;nica - sintomatologia</b></p>     <p>Ao   serem inquiridas sobre os seus sintomas, as mulheres com VC referem,   habitualmente, corrimento excessivo, prurido e/ou ardor vulvovaginais,   dispareunia e dis&#250;ria<sup>6,13</sup>.&#160; Os sintomas e a sua intensidade podem   ter um car&#225;cter c&#237;clico, sendo mais pronunciados na fase l&#250;tea do ciclo   menstrual (devido ao aumento do n&#250;mero de lactobacilos) e atingindo um pico   antes da menstrua&#231;&#227;o.&#160; &#201; ainda comum existir um al&#237;vio tempor&#225;rio dos sintomas   durante a menstrua&#231;&#227;o, devido ao aumento pronunciado do pH vaginal<sup>6,13,19,31,43</sup>.</p>     <p><b>Exame ginecol&#243;gico - sinais</b></p>     <p>No   exame ginecol&#243;gico pode ser evidente algum grau de edema e eritema,   nomeadamente no vest&#237;bulo vulvar. O &#171;Q-tip test&#187; (teste do cotonete) vulvar   ser&#225; negativo (aus&#234;ncia de dor vulvar)<sup>6,13</sup>.</p>     <p>Um   dos principais sinais presentes nas infe&#231;&#245;es do trato genital inferior &#233; o corrimento   vaginal que, quando fisiol&#243;gico, tem uma colora&#231;&#227;o transparente, esbranqui&#231;ada   ou acinzentada, um pH de 3,8 a 4,5 e &#233; composto por c&#233;lulas epiteliais   descamadas e lactobacilos, podendo ainda incluir outros componentes (fungos,   outras bact&#233;rias em menores propor&#231;&#245;es, leuc&#243;citos em pequenas propor&#231;&#245;es)<sup>5,45,46</sup>.   Na VC, o pH vaginal &#233; inferior a 4,2 e o corrimento &#233; abundante, esbranqui&#231;ado,   sem odor, leitoso e grumoso<sup>6,13</sup>. </p>     <p>Para   visualiza&#231;&#227;o ao microsc&#243;pio, deve ser realizado um esfrega&#231;o de corrimento,   recolhido das paredes laterais da vagina, do f&#243;rnix posterior ou de ambos. Deve   ser evitado tocar o c&#233;rvix aquando da colheita desta amosta<sup>13</sup>. </p>     <p>&#201;   de salientar que se a doente tiver fatores de risco para uma infe&#231;&#227;o   sexualmente transmiss&#237;vel dever&#225; ser exclu&#237;da a presen&#231;a de <i>Chlamydia     trachomatis</i> e <i>Neisseria gonorrhea</i>, idealmente por t&#233;cnicas de rea&#231;&#227;o   em cadeia de polimerase. &#201; tamb&#233;m fundamental efetuar um exame cultural   micol&#243;gico para exclus&#227;o da presen&#231;a de <i>Candida albicans</i><sup>13,47,48</sup>.</p>     ]]></body>
<body><![CDATA[<p><b>Crit&#233;rios de avalia&#231;&#227;o microsc&#243;pica</b></p>     <p>Os   sinais e sintomas s&#227;o insuficientes para estabelecer um diagn&#243;stico correto de   VC; o facto de habitualmente os cl&#237;nicos se basearem exclusivamente nestes   explica os erros diagn&#243;sticos frequentes. Como tal, o padr&#227;o para a dete&#231;&#227;o de   VC &#233; a an&#225;lise microsc&#243;pica de amostras de corrimento vaginal, usando   preferencialmente o contraste de fase<sup>13,28</sup>. </p>     <p>Assim,   avaliando a propor&#231;&#227;o de lactobacilos e de outras bact&#233;rias presentes num   esfrega&#231;o vaginal, pode-se categorizar a flora segundo a classifica&#231;&#227;o de<i> </i>Donders:</p>     <p>&#8226;&#160;&#160;Tipo   I - numerosos lactobacilos pleom&#243;rficos e sem outro tipo de bact&#233;rias</p>     <p>&#8226;&#160;&#160; Tipo II - flora mista, subdividindo-se em:</p>     <p>&#160;&#160;&#160; -&#160;&#160;&#160;&#160;&#160;&#160; Tipo IIa - lactobacilos predominantes</p>     <p>&#160;&#160;&#160; -&#160;&#160;&#160;&#160;&#160;&#160; Tipo IIb - redu&#231;&#227;o de lactobacilos com predomin&#226;ncia de outras bact&#233;rias <sup>49</sup>. </p>     <p>Num   esfrega&#231;o vaginal de uma mulher com VC encontra-se uma flora de tipo I (<a href="#f1">Figura 1</a>, <a href="#f2">2</a> e <a href="#f2">3</a>),sendo esta a caracter&#237;stica mais relevante da doen&#231;a<sup>13,39</sup>.   Note-se que nesta patologia, normalmente, n&#227;o se observa crescimento de   fungos, o que se traduz na observa&#231;&#227;o microsc&#243;pica pela aus&#234;ncia de blast&#243;poros   e de estruturas filamentosas (hifas ou pseudo-hifas). Outros microrganismos,   como <i>Trichomonas vaginalis</i> e flora granular (t&#237;pica de vaginose   bacteriana), dever&#227;o tamb&#233;m estar ausentes<sup>6,13,28</sup>. </p>     <p>&nbsp;</p>    <p align="center"><a name="f1"></a><img src="/img/revistas/aogp/v11n2/11n2a07f1.jpg"/></p>    
]]></body>
<body><![CDATA[<p>&nbsp;</p>    <p align="center"><a name="f2"></a><img src="/img/revistas/aogp/v11n2/11n2a07f2.jpg"/></p>    
<p>&nbsp;</p>     <p>Observa-se   um elevado n&#250;mero de lactobacilos. Evidenciam-se ainda alguns n&#250;cleos   desnudados e fragmentos citoplasm&#225;ticos. Denota-se a aus&#234;ncia de esporos,   blastosporos ou hifas/pseudo-hifas ou de quaisquer outros microrganismos   patog&#233;nicos</p>     <p><b>FIGURA   2 e 3. </b>Esfrega&#231;os   de corrimento vaginal de mulher com VC observado em microsc&#243;pio de contraste de   fase (amplia&#231;&#227;o 400x).</p>     <p>Observa-se   um elevado n&#250;mero de lactobacilos. Evidenciam-se ainda alguns n&#250;cleos   desnudados e fragmentos citoplasm&#225;ticos. Denota-se a aus&#234;ncia de esporos,   blastosporos ou hifas/pseudo-hifas ou de quaisquer outros microrganismos   patog&#233;nicos.</p>     <p>A   cit&#243;lise constatada leva a que, nos esfrega&#231;os, sejam observados fragmentos   citoplasm&#225;ticos e n&#250;cleos livres (muitas vezes confundidos com eritr&#243;citos)   (<a href="#f1">Figura 1</a>, <a href="#f2">2</a> e <a href="#f2">3</a>). S&#227;o tamb&#233;m visualiz&#225;veis lactobacilos aderentes aos   fragmentos das c&#233;lulas que, para observadores menos experientes, podem ser   confundidos com <i>clue cells,</i> t&#237;picas de vaginose bacteriana, adquirindo   neste caso a denomina&#231;&#227;o de <i>&#171;false clue cells&#187;. </i>Outra caracter&#237;stica a   apontar &#233; o baixo n&#250;mero de leuc&#243;citos nos esfrega&#231;os vaginais<sup>6,13,39</sup>.&#160; </p>     <p><b>Tratamento</b></p>     <p>O   principal objetivo do tratamento &#233; o al&#237;vio dos sintomas tentando-se, para tal,   restaurar o equil&#237;brio vaginal atrav&#233;s da redu&#231;&#227;o do n&#250;mero de lactobacilos e,   consequentemente, aumento do pH vaginal<sup>6,13</sup>. </p>     <p><b>Medidas comportamentais</b></p>     ]]></body>
<body><![CDATA[<p>As   medidas iniciais passam por altera&#231;&#245;es do comportamento, tais como: evitar o   uso de roupa interior quando poss&#237;vel e, quando necess&#225;ria, preferir tecidos   naturais, evitar a utiliza&#231;&#227;o de sabonetes na limpeza da &#225;rea genital e   descontinuar do uso de tamp&#245;es at&#233; que a paciente se encontre assintom&#225;tica por   um per&#237;odo m&#237;nimo de seis meses. Esta &#250;ltima medida &#233; importante, uma vez que o   fluxo menstrual por si s&#243; pode ser suficiente para diminuir os sintomas, por   promover um aumento do pH<sup>13,43,48</sup>. </p>     <p><b>Banhos de assento/irriga&#231;&#245;es vaginais</b></p>     <p>Se   a sintomatologia n&#227;o diminuir com as altera&#231;&#245;es de comportamento, a literatura   aponta dois poss&#237;veis tratamentos que propiciam um al&#237;vio sintom&#225;tico r&#225;pido e   eficaz, nomeadamente os banhos de assento e as irriga&#231;&#245;es vaginais com   bicarbonato de s&#243;dio:</p>     <p>-&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Banho   de assento: &#233; aconselhado realizar 2-3 banhos de assento na primeira semana de   tratamento e depois 1-2 vezes por semana para prevenir a recorr&#234;ncia   sintom&#225;tica. O paciente deve sentar-se no bid&#233; duas vezes por dia durante 15   minutos. Deve-se misturar 30-60g de bicarbonato de s&#243;dio em 5 cm de &#225;gua na bacia ou bid&#233;. Este &#233; considerado o tratamento de primeira linha<sup>6,13,48</sup>.</p>     <p>-&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Irriga&#231;&#245;es   vaginais: irrigar a vagina com esta solu&#231;&#227;o 2-3 vezes por semana e depois 1-2   vezes para prevenir a recorr&#234;ncia. Misturar 15-30g de bicarbonato de s&#243;dio em 0,5 L de &#225;gua morna<sup>6,13</sup>. </p>     <p>&#201;   importante informar as pacientes com sintomas recorrentes que devem fazer o   tratamento 24 a 48 horas antes do in&#237;cio previs&#237;vel dos sintomas. Em caso de   persist&#234;ncia ou agravamento dos sintomas ap&#243;s 2-3 semanas da instaura&#231;&#227;o do   tratamento, &#233; necess&#225;rio reavaliar a doente <sup>6, 13</sup>.</p>     <p><b>Descontinua&#231;&#227;o de outros tratamentos</b></p>     <p>Outro   aspeto importante do tratamento &#233; descontinuar toda e qualquer   terap&#234;utica homeop&#225;tica ou farmacol&#243;gica erradamente administrada,   incluindo antibi&#243;ticos, antif&#250;ngicos, suplementos acid&#243;filos ou   tratamentos caseiros (como iogurtes ou outros probi&#243;ticos naturais) <sup>48</sup>. </p>     <p><b>Tratamento de doen&#231;as concomitantes</b></p>     <p>Por   vezes, devido ao pH baixo, uma paciente com VC pode desenvolver candidose   vaginal. Isto ser&#225; not&#243;rio no exame microsc&#243;pico, em que coexistir&#227;o fungos com   o aumento de lactobacilos<i>.</i> Nestes casos, deve administrar-se um   antif&#250;ngico t&#243;pico durante 7 dias e irriga&#231;&#245;es com bicarbonato todas as manh&#227;s<sup>48</sup>. </p>     ]]></body>
<body><![CDATA[<p><b>Conclus&#227;o</b></p>     <p>A   VC &#233; uma patologia debilitante e incomodativa, podendo cursar com complica&#231;&#245;es   psicol&#243;gicas e sexuais. O seu quadro cl&#237;nico &#233; frequentemente confundido com   outras patologias, exigindo o seu diagn&#243;stico um elevado grau de suspei&#231;&#227;o. De   facto, v&#225;rios autores reconhecem que, sem o exame microsc&#243;pico a fresco do   corrimento vaginal, todas estas pacientes seriam diagnosticadas com candidose vaginal.   Isto salienta a import&#226;ncia desse exame, que evitaria grande parte dos erros e   omiss&#245;es de diagn&#243;sticos verificados, e subsequentemente quaisquer   consequ&#234;ncias para a doente decorrente de um tratamento inadequado.</p>     <p>&nbsp;</p>     <p><b>REFER&#202;NCIAS BIBLIOGR&#193;FICAS</b></p>     <!-- ref --><p>1.   Andrist LC. Vaginal health and infections. J Obstet Gynecol Neonatal Nurs.   2001;30(3):306-315.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1862981&pid=S1646-5830201700020000700001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>2.   Giraldo PC, Amaral RLGd, Gon&#231;alves AK, Vicentini R, Martins CH, Giraldo H,   Fachini AM. Influ&#234;ncia da freq&#252;&#234;ncia de coitos vaginais e da pr&#225;tica de duchas   higi&#234;nicas sobre o equil&#237;brio da microbiota vaginal. Revista Brasileira de   Ginecologia e Obstetr&#237;cia. 2005;27:257-262.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1862983&pid=S1646-5830201700020000700002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>3.   Hickey RJ, Zhou X, Pierson JD, Ravel J, Forney LJ. Understanding vaginal   microbiome complexity from an ecological perspective. Transl Res. 2012;160(4):267-282.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1862985&pid=S1646-5830201700020000700003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     ]]></body>
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Rev Infect Dis.   1990;12(5):856-872.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1863006&pid=S1646-5830201700020000700014&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>15.   Makarova K, Slesarev A, Wolf Y, Sorokin A, Mirkin B, Koonin E, et al. Comparative genomics of the lactic acid bacteria. Proc Natl Acad   Sci U S A. 2006;103(42):15611-15616.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1863008&pid=S1646-5830201700020000700015&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>16.   Klebanoff SJ, Hillier SL, Eschenbach DA, Waltersdorph AM. Control of the   microbial flora of the vagina by H2O2-generating lactobacilli. J Infect Dis.   1991;164(1):94-100.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1863010&pid=S1646-5830201700020000700016&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>17.   Pandey N, Malik RK, Kaushik JK, Singroha G. Gassericin A: a circular   bacteriocin produced by lactic acid bacteria Lactobacillus gasseri. World J   Microbiol Biotechnol. 2013;29(11):1977-1987.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1863012&pid=S1646-5830201700020000700017&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>18.   Antonio MA, Hawes SE, Hillier SL. The identification of vaginal Lactobacillus   species and the demographic and microbiologic characteristics of women   colonized by these species. J Infect Dis. 1999;180(6):1950-1956.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1863014&pid=S1646-5830201700020000700018&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></p>     <!-- ref --><p>19.   Osset J, Garcia E, Bartolome RM, Andreu A. Role of Lactobacillus as protector   against vaginal candidiasis. 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<body><![CDATA[<p><a href="#topc0">Endere&ccedil;o para correspond&ecirc;ncia</a> | <a href="#topc0">Direcci&oacute;n para correspondencia</a> | <a href="#topc0">Correspondence</a><a name="c0"></a></p>      <p> Ricardo   Soares</p>     <p>Faculdade   de Medicina da Universidade do Porto</p>     <p>Porto,   Portugal</p>     <p>E-mail: <a href="mailto:ricardo.santos.soares@gmail.com">ricardo.santos.soares@gmail.com</a></p>     <p>&nbsp;</p>     <p><b>Recebido   em: </b>10/04/2016</p>     <p><b>Aceite   para publica&#231;&#227;o: </b>26/07/2016</p>      ]]></body><back>
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