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        "titulo" => "Abstract"
        "resumen" => "<span class="elsevierStyleSectionTitle">Introduction</span><p class="elsevierStyleSimplePara elsevierViewall">Alopecia areata is an autoimmune inflammatory disease affecting the hair follicles&#46; Researchers are currently interested in whether the presence of bacterial pathogens and&#47;or a history of immunization can trigger an autoimmune response in patients who are genetically predisposed&#46;</p> <span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">This study aimed to determine whether there is an association between the development of alopecia areata and throat carriage of bacterial pathogens or a history of immunization&#46;</p> <span class="elsevierStyleSectionTitle">Material and methods</span><p class="elsevierStyleSimplePara elsevierViewall">Sixty-five men and women with alopecia areata and 65 control patients with other skin diseases were studied at the Dr Ladislao de la Pascua Dermatology Clinic between September 2008 and February 2009&#46; The patients ranged in age from 18 to 59 years&#46; Patients with scalp diseases were excluded from the control group&#46; In all cases&#44; the patient was questioned about immunizations received in the previous 6 months&#44; and a throat swab was cultured&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">A history of immunization &#40;odds ratio &#91;OR&#93;&#44; 3&#46;3&#59; 1&#46;6&#37; confidence interval &#91;CI&#93;&#44; 1&#46;6-6&#46;7&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41;&#44; the presence of bacterial pathogens in the oropharynx &#40;OR&#44; 2&#46;6&#59; 95&#37; CI&#44; 1&#46;1-6&#46;2&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;033&#41;&#44; and being a carrier of Streptococcus pyogenes &#40;OR&#44; 2&#46;1&#59; 95&#37; CI&#44; 1&#46;7-2&#46;5&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;042&#41; were risk factors for alopecia areata&#46; <span class="elsevierStyleItalic">Klebsiella pneumoniae&#44; S pyogenes&#44; Pseudomonas aeruginosa&#44; Streptococcus pneumoniae&#44; Serratia marcescens</span> and <span class="elsevierStyleItalic">Escherichia coli</span> were isolated from cultures&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">This is the first study to show an association between alopecia areata and throat carriage of bacterial pathogens or history of immunization&#44; as risk factors for development of the disease&#46; Given the characteristics of our study population&#44; the association appears valid for patients with less than 25&#37; hair loss and a course of disease under 1 year&#46;</p>"
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        "resumen" => "<span class="elsevierStyleSectionTitle">Introducci&#243;n</span><p class="elsevierStyleSimplePara elsevierViewall">La alopecia areata es una enfermedad inflamatoria autoinmune que afecta al pelo&#46; Actualmente se estudia si las bacterias pat&#243;genas y las inmunizaciones son inductores de la respuesta autoinmune en pacientes con susceptibilidad gen&#233;tica&#46;</p> <span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">El objetivo de este estudio fue determinar si las bacterias pat&#243;genas en la faringe y el antecedente de haber recibido inmunizaciones est&#225;n asociados a la enfermedad&#46;</p> <span class="elsevierStyleSectionTitle">Materiales y m&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">En el Centro Dermatol&#243;gico &#171;Dr&#46; Ladislao de la Pascua&#187;&#44; desde septiembre de 2008 a febrero de 2009&#44; se estudiaron 65 pacientes con alopecia areata y 65 controles con otras dermatosis&#44; excluyendo las del cuero cabelludo&#46; Se incluyeron pacientes de 18 a 59 a&#241;os de edad y de ambos sexos&#46; A todos se les interrog&#243; sobre inmunizaciones recibidas 6 meses antes y se les realiz&#243; un cultivo de exudado far&#237;ngeo&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Haber recibido inmunizaciones&#44; la presencia de bacterias pat&#243;genas en la faringe y ser portador de <span class="elsevierStyleItalic">S&#46; pyogenes</span> se comportaron como factores de riesgo para la alopecia areata&#44; con una raz&#243;n de probabilidades de 3&#44;3 &#40;IC 95&#37; 1&#44;6-6&#44;7&#59; p &#61; 0&#44;001&#41;&#44; 2&#44;6 &#40;IC 95&#37;&#58; 1&#44;1-6&#44;2&#59; p &#61; 0&#44;033&#41; y 2&#44;1 &#40;IC 95&#37; 1&#44;7-2&#44;5&#59; p &#61; 0&#44;042&#41;&#44; respectivamente&#46; Las bacterias aisladas fueron <span class="elsevierStyleItalic">Klebiella penumoniae&#44; Streptococcus pyogenes&#44; Pseudomonas aeruginosa&#44; Streptococcus pneumoniae&#44; Serratia marcescens</span> y <span class="elsevierStyleItalic">Escherichia coli</span>&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">Este es el primer estudio que apoya los hallazgos de estado de portador de bacterias pat&#243;genas en la faringe y la aplicaci&#243;n de inmunizaciones como factores de riesgo para desarrollar alopecia areata&#46; Por las caracter&#237;sticas de nuestra poblaci&#243;n&#44; esta asociaci&#243;n es v&#225;lida para los pacientes con menos del 25&#37; de p&#233;rdida de pelo y con una evoluci&#243;n inferior a un a&#241;o&#46;</p>"
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Original article
Immunization and Bacterial Pathogens in the Oropharynx as Risk Factors for Alopecia Areata
Inmunizaciones y bacterias patógenas en la faringe como factores de riesgo para alopecia areata
M.A. Morales-Sánchez
Autor para correspondencia
marthams@prodigy.net.mx

Corresponding author.
, M.A. Domínguez-Gómez, F. Jurado-Santa Cruz, M.L. Peralta-Pedrero
Centro Dermatológico Dr. Ladislao de la Pascua, Mexico City, Mexico
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        "resumen" => "<span class="elsevierStyleSectionTitle">Introduction</span><p class="elsevierStyleSimplePara elsevierViewall">Alopecia areata is an autoimmune inflammatory disease affecting the hair follicles&#46; Researchers are currently interested in whether the presence of bacterial pathogens and&#47;or a history of immunization can trigger an autoimmune response in patients who are genetically predisposed&#46;</p> <span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">This study aimed to determine whether there is an association between the development of alopecia areata and throat carriage of bacterial pathogens or a history of immunization&#46;</p> <span class="elsevierStyleSectionTitle">Material and methods</span><p class="elsevierStyleSimplePara elsevierViewall">Sixty-five men and women with alopecia areata and 65 control patients with other skin diseases were studied at the Dr Ladislao de la Pascua Dermatology Clinic between September 2008 and February 2009&#46; The patients ranged in age from 18 to 59 years&#46; Patients with scalp diseases were excluded from the control group&#46; In all cases&#44; the patient was questioned about immunizations received in the previous 6 months&#44; and a throat swab was cultured&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">A history of immunization &#40;odds ratio &#91;OR&#93;&#44; 3&#46;3&#59; 1&#46;6&#37; confidence interval &#91;CI&#93;&#44; 1&#46;6-6&#46;7&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;001&#41;&#44; the presence of bacterial pathogens in the oropharynx &#40;OR&#44; 2&#46;6&#59; 95&#37; CI&#44; 1&#46;1-6&#46;2&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;033&#41;&#44; and being a carrier of Streptococcus pyogenes &#40;OR&#44; 2&#46;1&#59; 95&#37; CI&#44; 1&#46;7-2&#46;5&#59; <span class="elsevierStyleItalic">P</span>&#61;&#46;042&#41; were risk factors for alopecia areata&#46; <span class="elsevierStyleItalic">Klebsiella pneumoniae&#44; S pyogenes&#44; Pseudomonas aeruginosa&#44; Streptococcus pneumoniae&#44; Serratia marcescens</span> and <span class="elsevierStyleItalic">Escherichia coli</span> were isolated from cultures&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">This is the first study to show an association between alopecia areata and throat carriage of bacterial pathogens or history of immunization&#44; as risk factors for development of the disease&#46; Given the characteristics of our study population&#44; the association appears valid for patients with less than 25&#37; hair loss and a course of disease under 1 year&#46;</p>"
      ]
      "es" => array:2 [
        "titulo" => "Resumen"
        "resumen" => "<span class="elsevierStyleSectionTitle">Introducci&#243;n</span><p class="elsevierStyleSimplePara elsevierViewall">La alopecia areata es una enfermedad inflamatoria autoinmune que afecta al pelo&#46; Actualmente se estudia si las bacterias pat&#243;genas y las inmunizaciones son inductores de la respuesta autoinmune en pacientes con susceptibilidad gen&#233;tica&#46;</p> <span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">El objetivo de este estudio fue determinar si las bacterias pat&#243;genas en la faringe y el antecedente de haber recibido inmunizaciones est&#225;n asociados a la enfermedad&#46;</p> <span class="elsevierStyleSectionTitle">Materiales y m&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">En el Centro Dermatol&#243;gico &#171;Dr&#46; Ladislao de la Pascua&#187;&#44; desde septiembre de 2008 a febrero de 2009&#44; se estudiaron 65 pacientes con alopecia areata y 65 controles con otras dermatosis&#44; excluyendo las del cuero cabelludo&#46; Se incluyeron pacientes de 18 a 59 a&#241;os de edad y de ambos sexos&#46; A todos se les interrog&#243; sobre inmunizaciones recibidas 6 meses antes y se les realiz&#243; un cultivo de exudado far&#237;ngeo&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Haber recibido inmunizaciones&#44; la presencia de bacterias pat&#243;genas en la faringe y ser portador de <span class="elsevierStyleItalic">S&#46; pyogenes</span> se comportaron como factores de riesgo para la alopecia areata&#44; con una raz&#243;n de probabilidades de 3&#44;3 &#40;IC 95&#37; 1&#44;6-6&#44;7&#59; p &#61; 0&#44;001&#41;&#44; 2&#44;6 &#40;IC 95&#37;&#58; 1&#44;1-6&#44;2&#59; p &#61; 0&#44;033&#41; y 2&#44;1 &#40;IC 95&#37; 1&#44;7-2&#44;5&#59; p &#61; 0&#44;042&#41;&#44; respectivamente&#46; Las bacterias aisladas fueron <span class="elsevierStyleItalic">Klebiella penumoniae&#44; Streptococcus pyogenes&#44; Pseudomonas aeruginosa&#44; Streptococcus pneumoniae&#44; Serratia marcescens</span> y <span class="elsevierStyleItalic">Escherichia coli</span>&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">Este es el primer estudio que apoya los hallazgos de estado de portador de bacterias pat&#243;genas en la faringe y la aplicaci&#243;n de inmunizaciones como factores de riesgo para desarrollar alopecia areata&#46; Por las caracter&#237;sticas de nuestra poblaci&#243;n&#44; esta asociaci&#243;n es v&#225;lida para los pacientes con menos del 25&#37; de p&#233;rdida de pelo y con una evoluci&#243;n inferior a un a&#241;o&#46;</p>"
      ]
    ]
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2023 Enero 29 24 53
2022 Diciembre 37 34 71
2022 Noviembre 15 27 42
2022 Octubre 15 15 30
2022 Septiembre 20 32 52
2022 Agosto 17 27 44
2022 Julio 16 30 46
2022 Junio 13 37 50
2022 Mayo 22 31 53
2022 Abril 32 25 57
2022 Marzo 17 51 68
2022 Febrero 28 24 52
2022 Enero 18 31 49
2021 Diciembre 18 43 61
2021 Noviembre 26 44 70
2021 Octubre 23 56 79
2021 Septiembre 22 49 71
2021 Agosto 11 28 39
2021 Julio 15 33 48
2021 Junio 17 23 40
2021 Mayo 16 28 44
2021 Abril 34 48 82
2021 Marzo 41 24 65
2021 Febrero 63 32 95
2021 Enero 40 23 63
2020 Diciembre 23 13 36
2020 Noviembre 18 28 46
2020 Octubre 21 16 37
2020 Septiembre 15 10 25
2020 Agosto 20 17 37
2020 Julio 16 18 34
2020 Junio 18 20 38
2020 Mayo 16 15 31
2020 Abril 9 20 29
2020 Marzo 18 24 42
2020 Febrero 0 1 1
2020 Enero 0 4 4
2019 Diciembre 0 6 6
2019 Noviembre 0 5 5
2019 Octubre 0 13 13
2019 Septiembre 0 5 5
2019 Agosto 0 6 6
2019 Julio 0 13 13
2019 Junio 0 3 3
2019 Mayo 0 39 39
2019 Abril 0 9 9
2019 Marzo 0 6 6
2019 Febrero 0 3 3
2018 Junio 0 1 1
2018 Mayo 0 7 7
2018 Abril 0 3 3
2018 Marzo 1 2 3
2018 Febrero 13 3 16
2018 Enero 11 3 14
2017 Diciembre 18 12 30
2017 Noviembre 17 6 23
2017 Octubre 23 6 29
2017 Septiembre 28 8 36
2017 Agosto 38 8 46
2017 Julio 25 2 27
2017 Junio 37 20 57
2017 Mayo 44 18 62
2017 Abril 44 22 66
2017 Marzo 49 33 82
2017 Febrero 26 6 32
2017 Enero 15 9 24
2016 Diciembre 24 14 38
2016 Noviembre 17 17 34
2016 Octubre 29 34 63
2016 Septiembre 34 8 42
2016 Agosto 35 9 44
2016 Julio 24 6 30
2016 Junio 10 8 18
2016 Mayo 8 10 18
2016 Abril 7 7 14
2016 Marzo 4 5 9
2016 Febrero 6 1 7
2016 Enero 5 2 7
2015 Diciembre 15 1 16
2015 Noviembre 3 1 4
2015 Octubre 7 1 8
2015 Septiembre 4 4 8
2015 Agosto 24 2 26
2015 Julio 34 3 37
2015 Junio 30 9 39
2015 Mayo 57 15 72
2015 Abril 38 10 48
2015 Marzo 69 12 81
2015 Febrero 23 13 36
2015 Enero 29 12 41
2014 Diciembre 26 18 44
2014 Noviembre 21 23 44
2014 Octubre 27 34 61
2014 Septiembre 24 19 43
2014 Agosto 27 13 40
2014 Julio 36 20 56
2014 Junio 38 12 50
2014 Mayo 40 10 50
2014 Abril 40 7 47
2014 Marzo 50 19 69
2014 Febrero 42 20 62
2014 Enero 33 13 46
2013 Diciembre 29 10 39
2013 Noviembre 28 19 47
2013 Octubre 25 15 40
2013 Septiembre 40 22 62
2013 Agosto 30 17 47
2013 Julio 35 23 58
2013 Junio 36 26 62
2013 Mayo 25 25 50
2013 Abril 31 28 59
2013 Marzo 35 21 56
2013 Febrero 17 14 31
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