Editorial
Exploring the bidirectional relationship between asthma and obstructive sleep apnea in Brazilian pediatric patients: one more piece to the Puzzle
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array:21 [ "pii" => "S0021755723000633" "issn" => "00217557" "doi" => "10.1016/j.jped.2023.05.004" "estado" => "S300" "fechaPublicacion" => "2023-09-01" "aid" => "1182" "copyrightAnyo" => "2023" "documento" => "article" "crossmark" => 1 "subdocumento" => "sco" "cita" => "J Pediatr (Rio J). 2023;99:423-4" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "itemSiguiente" => array:18 [ "pii" => "S0021755723000657" "issn" => "00217557" "doi" => "10.1016/j.jped.2023.03.009" "estado" => "S300" "fechaPublicacion" => "2023-09-01" "aid" => "1184" "copyright" => "Sociedade Brasileira de Pediatria" "documento" => "article" "crossmark" => 1 "subdocumento" => "rev" "cita" => "J Pediatr (Rio J). 2023;99:425-31" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "en" => array:12 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Review article</span>" "titulo" => "Tc-99m scan for pediatric bleeding Meckel diverticulum:a systematic review and meta-analysis" "tienePdf" => "en" "tieneTextoCompleto" => "en" "tieneResumen" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "425" "paginaFinal" => "431" ] ] "contieneResumen" => array:1 [ "en" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0006" "etiqueta" => "Figure 6" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr6.jpeg" "Alto" => 1475 "Ancho" => 2333 "Tamanyo" => 104757 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "alt0006" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spara006" class="elsevierStyleSimplePara elsevierViewall">The Funnel Plot of the meta-analysis.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Ping Yan, Shouliang Jiang" "autores" => array:2 [ 0 => array:2 [ "nombre" => "Ping" "apellidos" => "Yan" ] 1 => array:2 [ "nombre" => "Shouliang" "apellidos" => "Jiang" ] ] ] ] ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0021755723000657?idApp=UINPBA000049" "url" => "/00217557/0000009900000005/v1_202309010816/S0021755723000657/v1_202309010816/en/main.assets" ] "en" => array:11 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Editorial</span>" "titulo" => "Exploring the bidirectional relationship between asthma and obstructive sleep apnea in Brazilian pediatric patients: one more piece to the Puzzle" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "423" "paginaFinal" => "424" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "Luana Nosetti, David Gozal" "autores" => array:2 [ 0 => array:3 [ "nombre" => "Luana" "apellidos" => "Nosetti" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0001" ] ] ] 1 => array:4 [ "nombre" => "David" "apellidos" => "Gozal" "email" => array:1 [ 0 => "gozald@health.missouri.edu" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0002" ] 1 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">*</span>" "identificador" => "cor0001" ] ] ] ] "afiliaciones" => array:2 [ 0 => array:3 [ "entidad" => "Insubria University, F. Del Ponte Hospital, Department of Pediatrics, Pediatric Sleep Disorders Center, Varese, Italy" "etiqueta" => "a" "identificador" => "aff0001" ] 1 => array:3 [ "entidad" => "University of Missouri School of Medicine, Department of Child Health, Child Health Research Institute, Columbia, MO, USA" "etiqueta" => "b" "identificador" => "aff0002" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0001" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><p id="para0002" class="elsevierStylePara elsevierViewall">Obstructive sleep apnea (OSA) and asthma are two common respiratory disorders in children and adults, and as such, they can be concurrently present in the same patients. Both OSA and asthma share many common risk factors including obesity, prematurity, environmental exposures, a history of early-life lower respiratory tract infections, gastroesophageal reflux disease, and allergic rhinitis.<a class="elsevierStyleCrossRef" href="#bib0001"><span class="elsevierStyleSup">1</span></a><span class="elsevierStyleSup">,</span><a class="elsevierStyleCrossRef" href="#bib0002"><span class="elsevierStyleSup">2</span></a> Both asthma and OSA share pathogenic mechanisms which include systemic and localized activation and propagation of inflammatory pathways.<a class="elsevierStyleCrossRef" href="#bib0003"><span class="elsevierStyleSup">3</span></a> Consequently, it is anticipated that there will be a bidirectional link between asthma and OSA. Under the driving assumption of the united airway hypothesis,<a class="elsevierStyleCrossRef" href="#bib0004"><span class="elsevierStyleSup">4</span></a> emerging evidence further suggests that the two diseases may complicate the clinical course of each other. On the one hand, OSA could modify the extent and severity of asthmatic airway inflammation and thereby facilitate the emergence of poorer asthma control. On the other hand, asthma increases the collapsibility of the upper airway and increases vagal tone, contributing to the development and worsening of OSA, along with inflammatory mediators in the lower airways promoting the proliferation of upper airway lymphoid tissues.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">5</span></a><span class="elsevierStyleSup">,</span><a class="elsevierStyleCrossRef" href="#bib0006"><span class="elsevierStyleSup">6</span></a> One of the corollaries of such interactions is that adenotonsillectomy, the first line of treatment of OSA in children, results in improved asthma control in patients suffering from both diseases.<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">5</span></a><span class="elsevierStyleSup">,</span><a class="elsevierStyleCrossRef" href="#bib0007"><span class="elsevierStyleSup">7</span></a> However, when the converse approach is examined, there is limited evidence on how anti-asthma medications affect OSA severity in the same patients.</p><p id="para0003" class="elsevierStylePara elsevierViewall">With this information as a background, Fumo-dos-Santos and colleagues<a class="elsevierStyleCrossRef" href="#bib0008"><span class="elsevierStyleSup">8</span></a> performed a cross-sectional study in a tertiary Pediatric Pulmonary Clinic in Brazil to investigate the prevalence of OSA in asthmatic children and explore whether sex, puberty status, and asthma severity and control (based on GINA criteria and a questionnaire display any predictive capacity regarding the presence of OSA. The investigators evaluated 80 asthmatic children (age 7–18 years, 51.3% female) and included a home polygraphy type III study in 76 subjects. The presence of OSA was detected in 61.2%, but no significant associations emerged. Such absence of any meaningful relationships between OSA severity and asthma severity (assessed by either pulmonary function or disease activity) should not be surprising. In the largest study to date involving thousands of children, Bhattacharjee and colleagues showed that adenotonsillectomy led to a reduction in the use of breakthrough medication and hospital admission among asthmatic children whose clinical characteristics essentially became similar to those of asthmatic children who did not have OSA.<a class="elsevierStyleCrossRef" href="#bib0007"><span class="elsevierStyleSup">7</span></a> Thus, considering the high lability, i.e., day-to-day, or night-to-night variability of each of two diseases in any given patient in addition to the wide spectrum of disease severity for each affected child, it is predictable that the interactions between the two conditions may not necessarily display significant associations in a cross-sectional study that included relatively few subjects. A point of interest was the socioeconomic distribution of the participants. Socioeconomic status was based on the Criterio Brasil Classification. Most of the subjects enrolled belonged to the middle class, with scant representation by both the upper and lowerclass. In light of the social determinants of both asthma and OSA,<a class="elsevierStyleCrossRef" href="#bib0009"><span class="elsevierStyleSup">9</span></a><span class="elsevierStyleSup">,</span><a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">10</span></a> expansion of the socioeconomic spectrum to include a more balanced cohort representation would have been of great interest.</p><p id="para0004" class="elsevierStylePara elsevierViewall">What can we learn after reading this paper? First, and most importantly, OSA is frequently present among asthmatic children. Varying prevalence has been reported in other studies based on different criteria used to assess asthma or to define OSA severity (questionnaires, spirometry, polysomnography, portable polygraphy), but the findings have been quite consistent. Second, sex was not a risk factor for OSA in contrast with many other studies in which both OSA and asthma tend to occur more frequently in boys than in girls, particularly in younger age groups, probably because of their relatively reduced airway size until reaching maturity.<a class="elsevierStyleCrossRef" href="#bib0002"><span class="elsevierStyleSup">2</span></a> Conversely, asthma prevalence increases in females during puberty. Third, usually asthma is associated with more severe OSA, and the presence of OSA is associated with severe asthma. The cross-sectional nature of this study precludes any inferences as to the clinical outcomes.</p><p id="para0005" class="elsevierStylePara elsevierViewall">Thus. Fumo dos Santos and colleagues<a class="elsevierStyleCrossRef" href="#bib0008"><span class="elsevierStyleSup">8</span></a> are to be commended for this study, obviously carried out in a limited resource setting while aiming to concurrently obtain quantitative and objective measures of lung function and respiration during sleep. Notwithstanding such efforts, the jury is still out as to whether two diseases of the airway are to be viewed as worse than each in isolation.</p></span>" "pdfFichero" => "main.pdf" "tienePdf" => true "NotaPie" => array:1 [ 0 => array:1 [ "nota" => "<p class="elsevierStyleNotepara" id="notep0001">See paper by Fumo dos Santos et al. in pages 443-448.</p>" ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "cebibsec1" "bibliografiaReferencia" => array:10 [ 0 => array:3 [ "identificador" => "bib0001" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Association between air pollution and sleep disordered breathing in children" "autores" => array:1 [ 0 => array:2 [ "etal" => false "autores" => array:6 [ 0 => "T. Sánchez" 1 => "D. Gozal" 2 => "D.L. Smith" 3 => "C. Foncea" 4 => "C. Betancur" 5 => "P.E. 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