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  <front>
    <journal-meta>
      <journal-id journal-id-type="nlm-ta">Arq Bras Cardiol</journal-id>
      <journal-id journal-id-type="publisher-id">abc</journal-id>
      <journal-title-group>
        <journal-title>Arquivos Brasileiros de Cardiologia</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Arq. Bras. Cardiol.</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="ppub">0066-782X</issn>
      <issn pub-type="epub">1678-4170</issn>
      <publisher>
        <publisher-name>Sociedade Brasileira de Cardiologia - SBC</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v3">fH7MQfhxjVMdH5zvLzZqkBh</article-id>
      <article-id pub-id-type="other">00510</article-id>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v2">S0066-782X2021000400510</article-id>
      <article-id pub-id-type="publisher-id">abc.20201001</article-id>
      <article-id pub-id-type="doi">10.36660/abc.20201001</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Carta ao Editor</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>N&#237;veis S&#233;ricos do BDNF na Prote&#231;&#227;o Cardiovascular e em Resposta ao Exerc&#237;cio</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-8367-7089</contrib-id>
          <name>
            <surname>Miranda</surname>
            <given-names>Carla Paix&#227;o</given-names>
          </name>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c1"/>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Botoni</surname>
            <given-names>Fernando Ant&#244;nio</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>2</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <name>
            <surname>Rocha</surname>
            <given-names>Manoel Ot&#225;vio da Costa</given-names>
          </name>
          <xref ref-type="aff" rid="aff2">
            <sup>2</sup>
          </xref>
        </contrib>
        <aff id="aff1">
          <label>1</label>
          <institution content-type="orgname">Universidade de Bras&#237;lia</institution>
          <addr-line>
            <named-content content-type="city">Bras&#237;lia</named-content>
            <named-content content-type="state">DF</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Universidade de Bras&#237;lia - Patologia Molecular, Bras&#237;lia, DF - Brasil</institution>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution content-type="orgname">Universidade Federal</institution>
          <addr-line>
            <named-content content-type="city">Belo Horizonte</named-content>
            <named-content content-type="state">MG</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brasil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c1"><bold>Correspond&#234;ncia: Carla Paix&#227;o Miranda</bold> Universidade de Bras&#237;lia - Patologia Molecular - Campus Universit&#225;rio Darcy Ribeiro - Asa Norte, CEP <postal-code>70910-900</postal-code>, Bras&#237;lia, DF &#8211; Brasil E-mail: <email>carlanutribio@gmail.com</email>
				</corresp>
      </author-notes>
      <pub-date date-type="pub" publication-format="electronic">
        <day>23</day>
        <month>04</month>
        <year>2021</year>
      </pub-date>
      <pub-date date-type="collection" publication-format="electronic">
        <month>03</month>
        <year>2021</year>
      </pub-date>
      <volume>116</volume>
      <issue>3</issue>
      <fpage>510</fpage>
      <lpage>510</lpage>
      <history>
        <date date-type="received">
          <day>08</day>
          <month>09</month>
          <year>2020</year>
        </date>
        <date date-type="rev-recd">
          <day>13</day>
          <month>10</month>
          <year>2020</year>
        </date>
        <date date-type="accepted">
          <day>13</day>
          <month>10</month>
          <year>2020</year>
        </date>
      </history>
      <permissions>
        <license license-type="open-access" xlink:href="https://creativecommons.org/licenses/by/4.0/" xml:lang="en">
          <license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License</license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="pt">
        <title>Palavras-chave</title>
        <kwd>Doen&#231;as Cardiovasculares/mortalidade</kwd>
        <kwd>BDNF</kwd>
        <kwd>Fator Neutr&#243;fico Derivado de Enc&#233;falo</kwd>
        <kwd>Endot&#233;lio Vascular</kwd>
        <kwd>Fatores de Crescimento Neural</kwd>
        <kwd>Polimorfismo</kwd>
        <kwd>Exerc&#237;cio</kwd>
      </kwd-group>
      <counts>
        <fig-count count="0"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="4"/>
        <page-count count="1"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <p>Prezado editor,</p>
    <p>Li com interesse o artigo publicado por Trombetta et al.<xref ref-type="bibr" rid="B1"><sup>1</sup></xref> Neste sentido, &#233; cada vez mais sabido a import&#226;ncia da divulga&#231;&#227;o de novos marcadores na doen&#231;a cardiovascular. Trago para discuss&#227;o uma prote&#237;na chamada, fator de crescimento/diferencial 15 (GDF-15) que foi identificada pela primeira vez como citocina 1 ou MIC-1 da fam&#237;lia do TGF-beta, apresenta efeitos pleiotr&#243;picos dependendo do modelo a qual est&#225; sendo estudado.<xref ref-type="bibr" rid="B2"><sup>2</sup></xref> O interessante nessa discuss&#227;o &#233; a interface com que o Fator Neurotr&#243;fico Derivado do C&#233;rebro (BDNF) interage com a mol&#233;cula do GDF-15 que tamb&#233;m apresenta efeitos no sistema vascular,<xref ref-type="bibr" rid="B3"><sup>3</sup></xref> por&#233;m em elevadas concentra&#231;&#245;es pode apresentar resposta adversa, considerado um marcador progn&#243;stico independente para a doen&#231;a cardiovascular h&#225; evid&#234;ncias que o exerc&#237;cio f&#237;sico controla os n&#237;veis s&#233;ricos de GDF-15 nos protegendo de doen&#231;as card&#237;acas/coron&#225;rias, doen&#231;as metab&#243;licas e doen&#231;as oncol&#243;gicas.<xref ref-type="bibr" rid="B2"><sup>2</sup></xref><sup>,</sup><xref ref-type="bibr" rid="B3"><sup>3</sup></xref> Neste contexto, o BDNF que tamb&#233;m &#233; um marcador progn&#243;stico na doen&#231;a cardiovascular com fun&#231;&#227;o para al&#233;m do receptor cerebral de maneira a promover a matura&#231;&#227;o do GDF-15.<xref ref-type="bibr" rid="B4"><sup>4</sup></xref> Segundo o racional te&#243;rico a prote&#237;na convertase subtilisina/cexina (PCSK) apresenta, em sua constitui&#231;&#227;o, uma tr&#237;ade com sequ&#234;ncia de amino&#225;cidos (Asp-His-Ser) com fun&#231;&#227;o catal&#237;tica promotora de clivagem do GDF-15 e matura&#231;&#227;o para o meio intracelular.<xref ref-type="bibr" rid="B4"><sup>4</sup></xref> Evid&#234;ncias mostraram que precursores de GDF-15 n&#227;o clivados e em grandes quantidades na matriz extracelular se correlacionam com risco aumentado para um pior desfecho cl&#237;nico na insufici&#234;ncia card&#237;aca.<xref ref-type="bibr" rid="B4"><sup>4</sup></xref>
		</p>
  </body>
  <back>
    <ref-list>
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              <surname>De Moura</surname>
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  </back>
  <sub-article article-type="translation" id="S01" xml:lang="en">
    <front-stub>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Letter to the Editor</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Serum Levels of BDNF in Cardiovascular Protection and in Response to Exercise</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="editor">
          <contrib-id contrib-id-type="orcid">0000-0002-8367-7089</contrib-id>
          <name>
            <surname>Miranda</surname>
            <given-names>Carla Paix&#227;o</given-names>
          </name>
          <xref ref-type="aff" rid="aff3">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c2"/>
        </contrib>
        <contrib contrib-type="editor">
          <name>
            <surname>Botoni</surname>
            <given-names>Fernando Ant&#244;nio</given-names>
          </name>
          <xref ref-type="aff" rid="aff4">
            <sup>2</sup>
          </xref>
        </contrib>
        <contrib contrib-type="editor">
          <name>
            <surname>Rocha</surname>
            <given-names>Manoel Ot&#225;vio da Costa</given-names>
          </name>
          <xref ref-type="aff" rid="aff4">
            <sup>2</sup>
          </xref>
        </contrib>
        <aff id="aff3">
          <label>1</label>
          <addr-line>
            <named-content content-type="city">Bras&#237;lia</named-content>
            <named-content content-type="state">DF</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Universidade de Bras&#237;lia - Patologia Molecular, Bras&#237;lia, DF - Brazil</institution>
        </aff>
        <aff id="aff4">
          <label>2</label>
          <addr-line>
            <named-content content-type="city">Belo Horizonte</named-content>
            <named-content content-type="state">MG</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Universidade Federal de Minas Gerais, Belo Horizonte, MG - Brazil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c2"><bold>Mailing Address: Carla Paix&#227;o Miranda</bold> Universidade de Bras&#237;lia - Patologia Molecular - Campus Universit&#225;rio Darcy Ribeiro - Asa Norte, CEP <postal-code>70910-900</postal-code>, Bras&#237;lia, DF &#8211; Brazil E-mail: <email>carlanutribio@gmail.com</email>
				</corresp>
      </author-notes>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>Cardiovascular Diseases/mortality</kwd>
        <kwd>BDNF</kwd>
        <kwd>Brain-Derived Neurotrophic Factor</kwd>
        <kwd>Endothelium Vascular</kwd>
        <kwd>Nerve Growth Factors</kwd>
        <kwd>Polymorfism</kwd>
        <kwd>Exercise</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>Dear Editor,</p>
      <p>I read with interest the article published by Trombetta et al.<xref ref-type="bibr" rid="B1"><sup>1</sup></xref> In this sense, the importance of disseminating new markers in cardiovascular disease is increasingly known. I bring to the discussion a protein called growth factor / differential 15 (GDF-15) that was first identified as cytokine 1 or MIC-1 of the TGF-beta family, it has pleiotropic effects depending on the model being studied.<xref ref-type="bibr" rid="B2"><sup>2</sup></xref> The interesting thing about this discussion is the interface with which the Brain-derived neurotrophic factor (BDNF) interacts with the GDF-15 molecule, which also has effects on the vascular system, but in high concentrations it can present an adverse response, considered an independent prognostic marker for the cardiovascular disease there is evidence that physical exercise controls serum GDF-15 levels, protecting us from heart/coronary diseases, metabolic diseases, and oncological diseases.<xref ref-type="bibr" rid="B2"><sup>2</sup></xref><sup>,</sup><xref ref-type="bibr" rid="B3"><sup>3</sup></xref> In this context, BDNF is also a prognostic marker in cardiovascular disease with function beyond the brain receptor in order to promote the maturation of GDF-15.<xref ref-type="bibr" rid="B4"><sup>4</sup></xref> According to the theoretical rationale, the proprotein convertase subtilisin/kexin 9 (PCSK-9) presents in its constitution a triad with an amino acid sequence (Asp-His-Ser) with a catalytic function that promotes cleavage of GDF-15 and maturation to the intracellular medium.<xref ref-type="bibr" rid="B4"><sup>4</sup></xref> Evidence shows that GDF-15 precursors that are not cleaved and in large amounts in the extracellular matrix correlate with an increased risk of a worse clinical outcome in heart failure.<xref ref-type="bibr" rid="B4"><sup>4</sup></xref>
			</p>
    </body>
  </sub-article>
</article>
