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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">En un reciente n&#250;mero de <span class="elsevierStyleSmallCaps">Archivos de Bronconeumolog&#237;a</span>&#44; Baloira Villar et al&#46; discuten el consenso sobre el uso de corticoides inhalados &#40;CI&#41; en la enfermedad pulmonar obstructiva cr&#243;nica &#40;EPOC&#41;&#44; y hacen unas interesantes reflexiones<a class="elsevierStyleCrossRef" href="#bib0030"><span class="elsevierStyleSup">1</span></a>&#46; En su &#250;ltimo p&#225;rrafo opinan&#44; en consonancia con otros autores&#44; que la eosinofilia es el mejor marcador actual de la respuesta a los CI en la EPOC&#46; Creemos que se imponen algunas matizaciones&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">Ciertamente&#44; la eosinofilia en esputo parece el predictor m&#225;s fiable de respuesta terap&#233;utica actualmente&#44; pero esta es una prueba t&#233;cnicamente compleja&#44; limitada en nuestro pa&#237;s a pocos centros asistenciales y&#44; por lo tanto&#44; de escasa utilidad cl&#237;nica general&#46; Por ello&#44; varios estudios recientes valoran la posibilidad de usar un biomarcador de sencilla obtenci&#243;n&#44; la eosinofilia sangu&#237;nea &#8212;que parece correlacionarse aceptablemente con la eosinofilia en esputo&#8212; para predecir la respuesta a la asociaci&#243;n beta-agonistas de larga duraci&#243;n &#40;LABA&#41;&#47;CI en la EPOC&#44; respecto a la reducci&#243;n de exacerbaciones&#44; con resultados prometedores&#46; El punto de corte m&#225;s empleado es &#8805;<span class="elsevierStyleHsp" style=""></span>2&#37; eosin&#243;filos&#46; Sin embargo&#44; la pr&#225;ctica totalidad de estos trabajos son an&#225;lisis <span class="elsevierStyleItalic">post-hoc</span> de ensayos cl&#237;nicos en los que la valoraci&#243;n de la eosinofilia y su relaci&#243;n con la respuesta terap&#233;utica no era un objetivo inicial del estudio&#44; por lo que sus resultados deben tomarse con precauci&#243;n<a class="elsevierStyleCrossRef" href="#bib0035"><span class="elsevierStyleSup">2</span></a>&#46; Todav&#237;a no est&#225; clara la relaci&#243;n entre la eosinofilia sangu&#237;nea y el riesgo de exacerbaci&#243;n&#44; ni el mejor punto de corte de las cifras de eosin&#243;filos para explorar esta relaci&#243;n&#58; en un art&#237;culo reciente&#44; valores &#8805;<span class="elsevierStyleHsp" style=""></span>2&#37; de eosin&#243;filos en sangre predec&#237;an exacerbaciones graves en pacientes con EPOC&#44; pero parad&#243;jicamente la incidencia de exacerbaciones moderadas era menor en pacientes con eosin&#243;filos por encima de este l&#237;mite<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">3</span></a>&#46; Sin embargo&#44; usando cifras diferentes &#40;340<span class="elsevierStyleHsp" style=""></span>eosin&#243;filos&#47;&#956;l&#41;&#44; los sujetos que superaban este valor ten&#237;an m&#225;s exacerbaciones moderadas y graves<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">3</span></a>&#46; Por todo ello&#44; resulta dif&#237;cil&#44; por ahora&#44; aplicar estos hallazgos a la pr&#225;ctica cl&#237;nica&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">Por otra parte&#44; los an&#225;lisis de los ensayos cl&#237;nicos mencionados utilizan la cifra de eosin&#243;filos sangu&#237;neos en el momento del reclutamiento de los pacientes&#44; para predecir las exacerbaciones en el periodo inmediatamente posterior&#44; de duraci&#243;n variable&#44; pero un estudio derivado de la cohorte ECLIPSE mostr&#243; que el 49&#37; de los pacientes tienen recuentos de eosin&#243;filos que oscilan por debajo o por encima del 2&#37; a lo largo del tiempo<a class="elsevierStyleCrossRef" href="#bib0045"><span class="elsevierStyleSup">4</span></a>&#46; Esto plantea nuevas preguntas al cl&#237;nico &#8212;como la posibilidad de que los CI puedan &#40;o deban&#41; retirarse o reintroducirse en el seguimiento de los pacientes en funci&#243;n de la evoluci&#243;n de la eosinofilia&#8212;&#44; que solo podr&#225;n resolverse con estudios dise&#241;ados espec&#237;ficamente para responder estas cuestiones&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">En resumen&#44; aunque la eosinofilia sangu&#237;nea es un biomarcador prometedor en la EPOC&#44; estamos todav&#237;a lejos de poder emplearla para decidir el tratamiento de la EPOC en fase estable con seguridad&#44; y posiblemente el futuro pase por su combinaci&#243;n con otros marcadores&#44; como podr&#237;a ser la periostina<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">5</span></a>&#46; Estamos de acuerdo con Baloira Villar et al&#46; en su conclusi&#243;n final&#58; la EPOC es una enfermedad muy heterog&#233;nea y necesitamos m&#225;s biomarcadores que nos permitan orientar su tratamiento&#46;</p></span>"
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Carta al Director
Corticoides inhalados, eosinófilos y exacerbaciones de la enfermedad pulmonar obstructiva crónica
Inhaled corticosteroids, eosinophils and chronic obstructive pulmonary disease exacerbations
Rafael Golpe
Corresponding author
rafagolpe@gmail.com

Autor para correspondencia.
, Irene Martín-Robles, Pilar Sanjuán-López
Servicio de Neumología, Hospital Universitario Lucus Augusti, Lugo, España
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Article information
ISSN: 03002896
Original language: Spanish
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2024 May 89 24 113
2024 April 66 27 93
2024 March 74 20 94
2024 February 60 18 78
2023 March 27 4 31
2023 February 116 29 145
2023 January 104 27 131
2022 December 96 21 117
2022 November 137 29 166
2022 October 88 35 123
2022 September 74 21 95
2022 August 99 42 141
2022 July 91 51 142
2022 June 115 33 148
2022 May 92 51 143
2022 April 111 39 150
2022 March 124 47 171
2022 February 101 36 137
2022 January 97 44 141
2021 December 81 50 131
2021 November 87 50 137
2021 October 99 66 165
2021 September 78 52 130
2021 August 71 44 115
2021 July 69 42 111
2021 June 116 59 175
2021 May 107 43 150
2021 April 268 156 424
2021 March 209 35 244
2021 February 128 34 162
2021 January 101 31 132
2020 December 109 37 146
2020 November 126 22 148
2020 October 113 38 151
2020 September 106 36 142
2020 August 119 36 155
2020 July 116 35 151
2020 June 107 20 127
2020 May 141 28 169
2020 April 85 21 106
2020 March 130 24 154
2020 February 118 32 150
2020 January 121 25 146
2019 December 117 25 142
2019 November 114 28 142
2019 October 144 19 163
2019 September 199 25 224
2019 August 73 27 100
2019 July 83 28 111
2019 June 114 25 139
2019 May 128 31 159
2019 April 108 45 153
2019 March 113 33 146
2019 February 87 29 116
2019 January 74 33 107
2018 December 86 31 117
2018 November 126 45 171
2018 October 131 23 154
2018 September 90 23 113
2018 August 1 0 1
2018 May 51 1 52
2018 April 67 11 78
2018 March 105 8 113
2018 February 67 16 83
2018 January 146 16 162
2017 December 110 11 121
2017 November 79 8 87
2017 October 52 9 61
2017 September 59 11 70
2017 August 63 13 76
2017 July 52 10 62
2017 June 60 26 86
2017 May 55 5 60
2017 April 72 22 94
2017 March 37 13 50
2017 February 23 12 35
2017 January 30 27 57
2016 December 4 1 5
2016 November 6 2 8
2016 October 33 27 60
2016 September 11 12 23
2016 August 3 3 6
2016 July 9 10 19
2016 June 7 10 17
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