Original Article
Enhanced serum interferon-lambda 1/interleukin-29 levels in patients with psoriasis vulgaris
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Os níveis séricos de IL‐29 em pacientes com PV e dermatite atópica (DA) e controles saudáveis foram determinados por ELISA. A, Os níveis séricos de IL‐29 em pacientes com PV em estágio agudo foram significativamente maiores do que em pacientes com DA e controles; os valores de p são baseados no teste U de Mann‐Whitney. B, O teste <span class="elsevierStyleItalic">signed‐rank</span> de Wilcoxon para dados pareados mostrou que os níveis séricos de IL‐29 de 17 pacientes com PV no estágio agudo foram significativamente maiores do que aqueles no estágio de convalescença. C, Uma correlação positiva foi demonstrada entre os níveis séricos de IL‐29 e os escores PASI em pacientes com PV pelos testes de Spearman.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Li‐xin Fu, Tao Chen, Zai‐Pei Guo, Na Cao, Li‐Wen Zhang, Pei‐Mei Zhou" "autores" => array:6 [ 0 => array:2 [ "nombre" => "Li‐xin" "apellidos" => "Fu" ] 1 => array:2 [ "nombre" => "Tao" "apellidos" => "Chen" ] 2 => array:2 [ "nombre" => "Zai‐Pei" "apellidos" => "Guo" ] 3 => array:2 [ "nombre" => "Na" "apellidos" => "Cao" ] 4 => array:2 [ "nombre" => "Li‐Wen" "apellidos" => "Zhang" ] 5 => array:2 [ "nombre" => "Pei‐Mei" "apellidos" => "Zhou" ] ] ] ] ] "idiomaDefecto" => "pt" "Traduccion" => array:1 [ "en" => array:9 [ "pii" => "S0365059621001240" "doi" => "10.1016/j.abd.2020.11.007" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "en" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0365059621001240?idApp=UINPBA00008Z" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2666275221001259?idApp=UINPBA00008Z" "url" => "/26662752/0000009600000004/v1_202107170646/S2666275221001259/v1_202107170646/pt/main.assets" ] ] "itemSiguiente" => array:19 [ "pii" => "S0365059621001252" "issn" => "03650596" "doi" => "10.1016/j.abd.2020.12.009" "estado" => "S300" "fechaPublicacion" => "2021-07-01" "aid" => "385" "copyright" => "Sociedade Brasileira de Dermatologia" "documento" => "article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by/4.0/" "subdocumento" => "fla" "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">Original Article</span>" "titulo" => "Evaluation of non-endemic pemphigus foliaceus in a large series of patients: a single-center retrospective study from Turkey focuses on the relapses" "tienePdf" => "en" "tieneTextoCompleto" => "en" "tieneResumen" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "422" "paginaFinal" => "428" ] ] "contieneResumen" => array:1 [ "en" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1899 "Ancho" => 2500 "Tamanyo" => 258962 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0005" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">A. Monthly distribution of the onsets (χ2 = 20.67, p = 0.037). B. Monthly distribution of the subgroup of the relapses (without identified causes; χ2 = 13.96, p = 0.235).</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Sıla Kılıç Sayar, Rıfkiye Küçükoğlu" "autores" => array:2 [ 0 => array:2 [ "nombre" => "Sıla" "apellidos" => "Kılıç Sayar" ] 1 => array:2 [ "nombre" => "Rıfkiye" "apellidos" => "Küçükoğlu" ] ] ] ] ] "idiomaDefecto" => "en" "Traduccion" => array:1 [ "pt" => array:9 [ "pii" => "S2666275221001260" "doi" => "10.1016/j.abdp.2020.12.009" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "pt" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2666275221001260?idApp=UINPBA00008Z" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0365059621001252?idApp=UINPBA00008Z" "url" => "/03650596/0000009600000004/v4_202107160617/S0365059621001252/v4_202107160617/en/main.assets" ] "itemAnterior" => array:19 [ "pii" => "S0365059621001173" "issn" => "03650596" "doi" => "10.1016/j.abd.2020.12.008" "estado" => "S300" "fechaPublicacion" => "2021-07-01" "aid" => "377" "copyright" => "Sociedade Brasileira de Dermatologia" "documento" => "article" "crossmark" => 1 "licencia" => "http://creativecommons.org/licenses/by/4.0/" "subdocumento" => "fla" "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">Original Article</span>" "titulo" => "Auricular reconstruction after Mohs micrographic surgery: analysis of 101 cases" "tienePdf" => "en" "tieneTextoCompleto" => "en" "tieneResumen" => "en" "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "408" "paginaFinal" => "415" ] ] "contieneResumen" => array:1 [ "en" => true ] "contieneTextoCompleto" => array:1 [ "en" => true ] "contienePdf" => array:1 [ "en" => true ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0015" "etiqueta" => "Figure 3" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr3.jpeg" "Alto" => 1517 "Ancho" => 3175 "Tamanyo" => 555646 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0015" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Interpolation flap from the mastoid area. (A), Surgical defect involving multiple subunits, with significant loss of cartilage. (B), Detached interpolation flap. The lower incision was performed to harvest the cartilage graft from the concha (white arrow). (C), Sutured cartilage graft (2.5 × 1 cm) (white arrow). (D), Immediate postoperative period. A small skin graft was used for the lower portion of the wound. A small area in the scaphoid fossa was allowed to heal by second intention. (E), Immediate postoperative period of the second surgery (pedicle division), performed 3 weeks later. (F), One-year postoperative period. Cartilage replacement was essential to prevent contraction of the ear.</p>" ] ] ] "autores" => array:1 [ 0 => array:2 [ "autoresLista" => "Guilherme Canho Bittner, Elisa Mayumi Kubo, Bruno de Carvalho Fantini, Felipe Bochnia Cerci" "autores" => array:4 [ 0 => array:2 [ "nombre" => "Guilherme Canho" "apellidos" => "Bittner" ] 1 => array:2 [ "nombre" => "Elisa Mayumi" "apellidos" => "Kubo" ] 2 => array:2 [ "nombre" => "Bruno de Carvalho" "apellidos" => "Fantini" ] 3 => array:2 [ "nombre" => "Felipe Bochnia" "apellidos" => "Cerci" ] ] ] ] ] "idiomaDefecto" => "en" "Traduccion" => array:1 [ "pt" => array:9 [ "pii" => "S2666275221001181" "doi" => "10.1016/j.abdp.2020.12.008" "estado" => "S300" "subdocumento" => "" "abierto" => array:3 [ "ES" => true "ES2" => true "LATM" => true ] "gratuito" => true "lecturas" => array:1 [ "total" => 0 ] "idiomaDefecto" => "pt" "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S2666275221001181?idApp=UINPBA00008Z" ] ] "EPUB" => "https://multimedia.elsevier.es/PublicationsMultimediaV1/item/epub/S0365059621001173?idApp=UINPBA00008Z" "url" => "/03650596/0000009600000004/v4_202107160617/S0365059621001173/v4_202107160617/en/main.assets" ] "en" => array:19 [ "idiomaDefecto" => true "cabecera" => "<span class="elsevierStyleTextfn">Original Article</span>" "titulo" => "Enhanced serum interferon-lambda 1/interleukin-29 levels in patients with psoriasis vulgaris" "tieneTextoCompleto" => true "paginas" => array:1 [ 0 => array:2 [ "paginaInicial" => "416" "paginaFinal" => "421" ] ] "autores" => array:1 [ 0 => array:4 [ "autoresLista" => "Li-xin Fu, Tao Chen, Zai-Pei Guo, Na Cao, Li-Wen Zhang, Pei-Mei Zhou" "autores" => array:6 [ 0 => array:3 [ "nombre" => "Li-xin" "apellidos" => "Fu" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] 1 => array:3 [ "nombre" => "Tao" "apellidos" => "Chen" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] 2 => array:4 [ "nombre" => "Zai-Pei" "apellidos" => "Guo" "email" => array:1 [ 0 => "guozp930@163.com" ] "referencia" => array:2 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">b</span>" "identificador" => "aff0010" ] 1 => array:2 [ "etiqueta" => "*" "identificador" => "cor0005" ] ] ] 3 => array:3 [ "nombre" => "Na" "apellidos" => "Cao" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] 4 => array:3 [ "nombre" => "Li-Wen" "apellidos" => "Zhang" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] 5 => array:3 [ "nombre" => "Pei-Mei" "apellidos" => "Zhou" "referencia" => array:1 [ 0 => array:2 [ "etiqueta" => "<span class="elsevierStyleSup">a</span>" "identificador" => "aff0005" ] ] ] ] "afiliaciones" => array:2 [ 0 => array:3 [ "entidad" => "Department of Dermatovenereology, Chengdu Second People’s Hospital, Chengdu, Sichuan, China" "etiqueta" => "a" "identificador" => "aff0005" ] 1 => array:3 [ "entidad" => "Department of Dermatovenereology, West China Hospital of Sichuan University, Chengdu, Sichuan, China" "etiqueta" => "b" "identificador" => "aff0010" ] ] "correspondencia" => array:1 [ 0 => array:3 [ "identificador" => "cor0005" "etiqueta" => "⁎" "correspondencia" => "Corresponding author." ] ] ] ] "resumenGrafico" => array:2 [ "original" => 0 "multimedia" => array:8 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 2928 "Ancho" => 2500 "Tamanyo" => 185471 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0010" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">(A–C) IL-29 induced IL-6, IL-17 and TNF-α mRNA expression in PBMCs from PV patients. PBMCs obtained from 10 PV patients were treated with IL-29 100 ng/mL or PBS for 6 h. After that, mRNA expression of IL-6, IL-17 and TNF-α in PBMCs were measured by Real-time quantitative PCR. IL-29 obviously enhanced IL-6, IL-17 and TNF-α mRNA expression in PBMCs; p-values are based on <span class="elsevierStyleItalic">t-</span>test. n = 10, *p < 0.05, **p < 0.01, compared with control group. (D–E) IL-29 enhanced IL-6 and IL-8 mRNA expression in HaCat cells. HaCaT cells were treated with recombinant IL-29 (1 ng/mL, 10 ng/mL, 100 ng/mL, 1000 ng/mL) or TNF-α (10 ng/mL) for 2 h. After that, mRNA expression of IL-6 and IL-8 in HaCat cells was measured by Real-time quantitative PCR. IL-29 obviously enhanced IL-6 and IL-8 mRNA in HaCat cells; p-values are based on the One-way analysis of variance. n = 10, *p < 0.05, **p < 0.01, compared with control group. All data are expressed as mean ± SD.</p>" ] ] ] "textoCompleto" => "<span class="elsevierStyleSections"><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0045">Introduction</span><p id="par0005" class="elsevierStylePara elsevierViewall">Psoriasis is a common T-cell-mediated chronic inflammatory skin disorder, histopathologically characterized by hyper-proliferation of keratinocytes and dermal vascular, infiltration with mononuclear cells.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1–4</span></a> However, the molecular mechanisms in the development of this disease have not been entirely elucidated.</p><p id="par0010" class="elsevierStylePara elsevierViewall">Interferon (IFN)-λ1, also named Interleukin (IL)-29, is a new member of Type III IFN or IFN-λ family. The family of Type III IFN is comprised IFN-λ1 (IL-29), IFN-λ2 (IL-28A) and IFN-λ3 (IL-28B). Many investigators have demonstrated that IL-29 plays an important role in the pathogenesis of many types of autoimmune and inflammatory diseases, such as systemic sclerosis, rheumatoid arthritis and systemic lupus erythematosus.<a class="elsevierStyleCrossRefs" href="#bib0025"><span class="elsevierStyleSup">5–7</span></a> However, the association of IL-29 with Psoriasis Vulgaris (PV) is still poorly understood. Thus, in this study, the authors compared the IL-29 serum levels in PV patients with healthy controls.</p><p id="par0015" class="elsevierStylePara elsevierViewall">More recently, accumulating research has indicated that IL-29 can affect the cytokines production by activating the Janus Kinase/signal transducer and activators of the transcription pathway. IL-29 upregulated IL-1β, IL-8, MCP-1 expression and promoted monocyte/macrophage migration in human Simpson-Golabi-Behmel syndrome.<a class="elsevierStyleCrossRef" href="#bib0040"><span class="elsevierStyleSup">8</span></a> IL-29 can increase the production of IL-10, IL-8 and IL-6 in macrophages and inhibits the release of IL-13 in T-cells.<a class="elsevierStyleCrossRefs" href="#bib0045"><span class="elsevierStyleSup">9–11</span></a> Moreover, He et al reported that IL-29 could induce the secretion of IL-6 and TNF from CD14+T-cells as well as IL-4 and IL-13 from mast cells.<a class="elsevierStyleCrossRef" href="#bib0060"><span class="elsevierStyleSup">12</span></a> Keratinocytes, as a major cell of innate immunity, play an important role in skin inflammation and immune response by expressing cytokines and antimicrobial peptides in psoriasis. HaCat cells are one type of keratinocyte cell line. To study the role of IL-29 in the pathogenesis of PV, the authors investigate the effects of IL-29 on mRNA expression of cytokines (including IL-6, TNF-α, IL-17, IL-8, IL-4, IFN-γ, and IL10) in PBMCs from PV patients and keratinocyte cell line HaCaT in this study.</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0050">Methods</span><span id="sec0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0060">Patients</span><p id="par0025" class="elsevierStylePara elsevierViewall">Forty-one patients with PV, twenty-three patients with Atopic Dermatitis (AD), and thirty-eight age and gender-matched controls were enrolled in this study. The detailed history for each patient was provided in <a class="elsevierStyleCrossRef" href="#tbl0005">Table 1</a>. The severity of disease in patients with PV or AD was determined using Psoriasis Area and Severity Index (PASI) or scoring AD (SCORAD). Among them, 17 PV patients were treated with topical steroid and tar, and oral compound glycyrrhizin (Each table contains Glycymhizin 25 mg, Monoammonium Glycyrrhizinate 35 mg, Glycine 25 mg, and DL-Methionine 25 mg. The patients were treated with two tables one time, triple daily. Nippon Kayaku, Tokyo, Japan). The serum samples of these patients were collected both before and after treatment. In addition, heparinized blood samples were collected from 16 PV patients. There was not any history of recent viral infections or lymphocytosis or lymphopenia or any other correlating investigation in these patients. All the PV patients were strictly psoriasis vulgaris only, without any other phenotypes overlap.</p><elsevierMultimedia ident="tbl0005"></elsevierMultimedia></span><span id="sec0025" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0065">Assay for serum IL-29 levels</span><p id="par0030" class="elsevierStylePara elsevierViewall">Serum IL-29 levels in a different group of patients were measured by commercially available Enzyme-Linked Immunosorbent Assay (ELISA) kits (Boster, Wuhan, China) following the manufacturer’s instruction.</p></span><span id="sec0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0070">Cell culture</span><p id="par0035" class="elsevierStylePara elsevierViewall">PBMCs of PV patients were isolated from collected peripheral blood by gradient density centrifugation using commercially available kits (Tianjin Haoyang Biological Manufacture Co. Ltd., Tianjin, China). The isolated PBMCs from each patient were divided into two groups and cultured in DMEM containing 10% FBS, 100 mg/mL penicillin and streptomycin in a 6-well plate at 1 mL per well. One group of cells was treated with recombinant 100 ng/mL IL-29 (Peprotech, London, UK) for 6 h, and the other group was treated with PBS as control. After treatment, total RNA was extracted by Trizol reagent (Invitrogen Corp, Carlsbad, CA, USA) according to the manufacturer's instructions.</p><p id="par0040" class="elsevierStylePara elsevierViewall">HaCaT cells were cultured in DMEM containing 10% FBS, 100 mg/mL penicillin and streptomycin and treated with recombinant IL-29 (1 ng/mL, 10 ng/mL, 100 ng/mL, 1000 ng/mL) or TNF-α (10 ng/mL) for 2 h. Cells were treated with PBS as control. After treatment, the total RNA of cells was extracted by Trizol reagent according to the manufacturer's instructions.</p></span><span id="sec0035" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0075">Real-time quantitative PCR</span><p id="par0045" class="elsevierStylePara elsevierViewall">The mRNA levels of IL-6, TNF-α, IL-17, IL-4, IFN-γ, IL-10, and GAPDH in PBMCs after incubated with IL-29 or PBS and the expression of IL-6, IL-8 and GAPDH in HaCat cells after incubated with IL-29, TNF-α or PBS was determined by real-time quantitative PCR. The cDNA was synthesized from the total RNA by using RT reagent Kit with gDNA Eraser (Takara, Dalian, China). cDNA samples were amplified in a 20 μL reaction volume containing 10 μL of 2 × SYBR Green Master Mix (Takara, Dalian, China), 2 μL of cDNA and 0.25 μM qPCR primers. The following primers were used: IL-4 (P216616, Bioneer, Inc., Daejeon, Korea); IL-6 (P211161, Bioneer, Inc., Daejeon, Korea); IL-10 (P285360, Bioneer, Inc., Daejeon, Korea); IL-17 (P291322, Bioneer, Inc., Daejeon, Korea); IFN-γ (Catalog: HQP009467, GeneCopoeia, USA); TNF-α (P237423, Bioneer, Inc., Daejeon, Korea); GAPDH (5’-CGGAGTCAACGGATTTGGTC-3’ and 5’-CGGTGCCATGGAATTTGCCA-3’). The conditions were 95 °C for 5 min, and 95 °C for 15 s and 60 °C for the 30 s of 40 cycles with a final extension at 72 °C for 5 min. The mRNA levels of IL-6, TNF-α, IL-17, IL-4, IFN-γ, IL-10, and IL-8 were expressed as relative mRNA levels compared with control and determined by the 2-ΔΔCt method.</p></span><span id="sec0040" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0080">Statistical analysis</span><p id="par0050" class="elsevierStylePara elsevierViewall">Each experiment was carried out at least three times. The data were expressed as mean ± SD, Statistical differences between groups were determined according to one-way analysis of variance, <span class="elsevierStyleItalic">t</span>-test or Mann-Whitney <span class="elsevierStyleItalic">U</span> Test. Paired data were compared by Wilcoxon signed-rank test. The association of IL-29 with PASI scores was analyzed by the Spearman test; p < 0.05 was set as statistically significant.</p></span></span><span id="sec0045" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0085">Results</span><span id="sec0050" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0090">Elevated IL-29 serum levels in PV patients</span><p id="par0055" class="elsevierStylePara elsevierViewall">The serum levels of IL-29 in patients with PV and AD and control were detected by ELISA. As shown in <a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>A, IL-29 serum levels in patients with PV (41.62 ± 23.26 ng/mL) were significantly higher than those in AD patients (24.35 ± 12.57 ng/mL) and control group (29.83 ± 19.52 ng/mL). Moreover, 17 PV patients had obviously elevated serum IL-29 levels when compared with those after treatment (<a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>B); (p = 0.0007). Furthermore, as presented in <a class="elsevierStyleCrossRef" href="#fig0005">Fig. 1</a>C, serum IL-29 levels in PV patients were correlated with PASI scores (<span class="elsevierStyleItalic">r</span> = 0.3319, p = 0.034).</p><elsevierMultimedia ident="fig0005"></elsevierMultimedia></span><span id="sec0055" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0095">IL-29 up-regulates the mRNA expression of IL-6, TNF-α, and IL-17 in PBMCs from PV patients</span><p id="par0060" class="elsevierStylePara elsevierViewall">To explore the role of IL-29 in the pathogenesis of PV, the authors assayed the effects of IL-29 on cytokines mRNA expression (including IL-6, TNF-α, IL-17, IL-4, IFN-γ, and IL-10) in PBMCs from 10 PV patients by real-time quantitative PCR. As presented in <a class="elsevierStyleCrossRef" href="#fig0010">Fig. 2</a>A–C, IL-29 caused a markedly increase in the mRNA levels of IL-6, TNF-α and IL-17 in PBMCs from PV patients treated with IL-29 when compared with PBS controls. However, mRNA expression of IL-4, IL10, and IFN-γ were no changes in PBMCs from PV patients after IL-29 incubated (data not shown).</p><elsevierMultimedia ident="fig0010"></elsevierMultimedia></span><span id="sec0060" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0100">IL-29 enhances IL-6 and IL-8 expression in HaCat cells</span><p id="par0065" class="elsevierStylePara elsevierViewall">To explore the function of IL-29 in the pathogenesis of PV, the authors also assayed cytokines mRNA expression (IL-6 and IL-8) in Hacat cells after treatment with recombinant IL-29 by real-time quantitative PCR. As presented in <a class="elsevierStyleCrossRef" href="#fig0010">Figs. 2</a>D and <a class="elsevierStyleCrossRef" href="#fig0010">2</a>E, IL-29 caused an obvious increase in the mRNA levels of IL-6 and IL-8 in HaCat cells treated with IL-29 when compared with PBS controls.</p></span></span><span id="sec0065" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0105">Discussion</span><p id="par0070" class="elsevierStylePara elsevierViewall">As described above, IL-29, a new member of the type III IFN cytokine family, is closely related to the pathogenesis of many types of autoimmune and inflammatory diseases.<a class="elsevierStyleCrossRefs" href="#bib0025"><span class="elsevierStyleSup">5,7,13,14</span></a> In this study, the increased serum levels of IL-29 were founded in PV patients when compared with those in AD patients and healthy controls. Moreover, IL-29 serum levels were correlated with the severity of PV. Data suggest that IL-29 may play a role in the pathogenesis of PV.</p><p id="par0075" class="elsevierStylePara elsevierViewall">Many researchers reported that IL-29 can be expressed in many cell types and be displayed immunoregulatory activities in naïve PBMCs.<a class="elsevierStyleCrossRefs" href="#bib0005"><span class="elsevierStyleSup">1,15</span></a> Wang et al. have demonstrated that IL-29 enhances TLR-induced proinflammatory cytokine production in RA-FLS via up-regulation of TLRs.<a class="elsevierStyleCrossRef" href="#bib0080"><span class="elsevierStyleSup">16</span></a> Gallagher et al. have reported that IL-29 appears to be an inhibitor of human Th2 responses whose action is primarily directed towards IL-13 but which may also affect Th2 responses generally and does not invoke a complementary elevation of IFN-γ secretion.<a class="elsevierStyleCrossRef" href="#bib0050"><span class="elsevierStyleSup">10</span></a> Yan et al. have shown that IL-29 combined with rhGM-CSF and IL-4 can induce DC maturation, increase the expression of the costimulatory molecules and stimulate cytokine and chemokine production in the immune tolerant phase and the immune clearance phase.<a class="elsevierStyleCrossRef" href="#bib0085"><span class="elsevierStyleSup">17</span></a> Lots of studies had shown that Th1/Th17 cells played crucial roles in the pathogenesis of psoriasis.<a class="elsevierStyleCrossRefs" href="#bib0090"><span class="elsevierStyleSup">18–20</span></a> Psoriatic lesions can secrete many inflammatory cytokines such as IFN-γ, IL-6, IL-1 β, IL-8, IL-17, and TNF-α, which contribute to the development of psoriasis.<a class="elsevierStyleCrossRef" href="#bib0105"><span class="elsevierStyleSup">21</span></a> In this study, the authors investigated the effects of IL-29 on mRNA expression of cytokines (including IL-6, TNF-α, IL-17, IL-4, IFN-γ, and IL-10) in PBMCs from PV patients and HaCat cells treated with IL-29. The authors indicated that IL-29 markedly enhanced the mRNA expression of TNF-α, IL-6 and IL-17 in PBMCs from PV patients. The authors also found that IL-29 obviously increased the mRNA expression of IL-6 and IL-8 in HaCat cells. A previous study indicated that TNF-α, IL-6, IL-8, and IL-17 play a crucial role in the pathogenesis of PV.<a class="elsevierStyleCrossRefs" href="#bib0090"><span class="elsevierStyleSup">18,22</span></a> Hence, the authors suggest that IL-29 may up-regulate the expression of cytokines in PBMCs and keratinocytes, and enlarge inflammatory reaction in the pathogenesis of PV.</p></span><span id="sec0070" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0110">Conclusion</span><p id="par0080" class="elsevierStylePara elsevierViewall">Taken together, this study provides first observations on the association of IL-29 and PV and showed the elevated IL-29 serum levels in PV patients. The authors of this present study suggest that IL-29 may serve as a pro-inflammatory cytokine and play a role in the pathogenesis of PV.</p></span><span id="sec0075" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0115">Ethics statement</span><p id="par0085" class="elsevierStylePara elsevierViewall">Human research was approved by the Ethics Committee of Chengdu Second People’s Hospital (nº 2015007). All patients were oriental and gave written informed consent.</p></span><span id="sec0080" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0120">Financial support</span><p id="par0090" class="elsevierStylePara elsevierViewall">The study was supported, in part, by the <span class="elsevierStyleGrantSponsor" id="gs0005">Natural Science Foundation of China</span> (<span class="elsevierStyleGrantNumber" refid="gs0005">81470143</span>), and the <span class="elsevierStyleGrantSponsor" id="gs0010">Sichuan Provincial Department of Science and Technology</span> (<span class="elsevierStyleGrantNumber" refid="gs0010">2019YJ0627</span>).</p></span><span id="sec0085" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0125">Authors’ contributions</span><p id="par0095" class="elsevierStylePara elsevierViewall">Li-xin Fu: Concept, design, definition of intellectual content; literature search; experiment studies; manuscript preparation; manuscript editing.</p><p id="par0100" class="elsevierStylePara elsevierViewall">Tao Chen: Concept, design, definition of intellectual content; manuscript preparation; manuscript editing.</p><p id="par0105" class="elsevierStylePara elsevierViewall">Zai-pei Guo: Concept, design, definition of intellectual content; manuscript review.</p><p id="par0110" class="elsevierStylePara elsevierViewall">Na Cao: Data acquisition and data analysis.</p><p id="par0115" class="elsevierStylePara elsevierViewall">Li-wen Zhang: Literature search; Experiment studies.</p><p id="par0120" class="elsevierStylePara elsevierViewall">Pei-mei Zhou: Data acquisition and data analysis.</p></span><span id="sec0090" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0130">Conflict of interest</span><p id="par0125" class="elsevierStylePara elsevierViewall">None declared.</p></span></span>" "textoCompletoSecciones" => array:1 [ "secciones" => array:12 [ 0 => array:3 [ "identificador" => "xres1550359" "titulo" => "Abstract" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "abst0005" "titulo" => "Background" ] 1 => array:2 [ "identificador" => "abst0010" "titulo" => "Objective" ] 2 => array:2 [ "identificador" => "abst0015" "titulo" => "Methods" ] 3 => array:2 [ "identificador" => "abst0020" "titulo" => "Results" ] 4 => array:2 [ "identificador" => "abst0030" "titulo" => "Conclusion" ] ] ] 1 => array:2 [ "identificador" => "xpalclavsec1400146" "titulo" => "Keywords" ] 2 => array:2 [ "identificador" => "sec0005" "titulo" => "Introduction" ] 3 => array:3 [ "identificador" => "sec0010" "titulo" => "Methods" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "sec0020" "titulo" => "Patients" ] 1 => array:2 [ "identificador" => "sec0025" "titulo" => "Assay for serum IL-29 levels" ] 2 => array:2 [ "identificador" => "sec0030" "titulo" => "Cell culture" ] 3 => array:2 [ "identificador" => "sec0035" "titulo" => "Real-time quantitative PCR" ] 4 => array:2 [ "identificador" => "sec0040" "titulo" => "Statistical analysis" ] ] ] 4 => array:3 [ "identificador" => "sec0045" "titulo" => "Results" "secciones" => array:3 [ 0 => array:2 [ "identificador" => "sec0050" "titulo" => "Elevated IL-29 serum levels in PV patients" ] 1 => array:2 [ "identificador" => "sec0055" "titulo" => "IL-29 up-regulates the mRNA expression of IL-6, TNF-α, and IL-17 in PBMCs from PV patients" ] 2 => array:2 [ "identificador" => "sec0060" "titulo" => "IL-29 enhances IL-6 and IL-8 expression in HaCat cells" ] ] ] 5 => array:2 [ "identificador" => "sec0065" "titulo" => "Discussion" ] 6 => array:2 [ "identificador" => "sec0070" "titulo" => "Conclusion" ] 7 => array:2 [ "identificador" => "sec0075" "titulo" => "Ethics statement" ] 8 => array:2 [ "identificador" => "sec0080" "titulo" => "Financial support" ] 9 => array:2 [ "identificador" => "sec0085" "titulo" => "Authors’ contributions" ] 10 => array:2 [ "identificador" => "sec0090" "titulo" => "Conflict of interest" ] 11 => array:1 [ "titulo" => "References" ] ] ] "pdfFichero" => "main.pdf" "tienePdf" => true "fechaRecibido" => "2020-07-06" "fechaAceptado" => "2020-11-19" "PalabrasClave" => array:1 [ "en" => array:1 [ 0 => array:4 [ "clase" => "keyword" "titulo" => "Keywords" "identificador" => "xpalclavsec1400146" "palabras" => array:3 [ 0 => "Interleukins" 1 => "Leukocytes, mononuclear" 2 => "Psoriasis" ] ] ] ] "tieneResumen" => true "resumen" => array:1 [ "en" => array:3 [ "titulo" => "Abstract" "resumen" => "<span id="abst0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Background</span><p id="spar0025" class="elsevierStyleSimplePara elsevierViewall">Interferon (IFN)-λ1, also named Interleukin (IL)-29, is a new member of the Type III IFN or IFN-λ family. IL-29 plays an important role in the pathogenesis of many types of autoimmune and inflammatory diseases.</p></span> <span id="abst0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Objective</span><p id="spar0030" class="elsevierStyleSimplePara elsevierViewall">To study the role of IL-29 in the pathogenesis of psoriasis vulgaris.</p></span> <span id="abst0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0020">Methods</span><p id="spar0035" class="elsevierStyleSimplePara elsevierViewall">The authors detected the serum levels of IL-29 in forty-one patients with psoriasis vulgaris, twenty-three patients with atopic dermatitis and thirty-eight age and gender-matched controls by sandwich Enzyme-Linked Immunosorbent Assay (ELISA). The effects of IL-29 on the expression of cytokines, such as IL-6, IL-17, IL-8, IL-4, IL10, Interferon (IFN-γ) and Tumor Necrosis Factor-α (TNF-α), in PBMCs and HaCat cells were determined by real-time quantitative PCR.</p></span> <span id="abst0020" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0025">Results</span><p id="spar0040" class="elsevierStyleSimplePara elsevierViewall">Our data indicated that serum IL-29 levels were significantly elevated in patients with psoriasis vulgaris when compared with atopic dermatitis patients and the control group. Moreover, Serum levels of IL-29 were closely associated with the severity of psoriasis vulgaris. Furthermore, IL-29 up-regulated the mRNA expression levels of IL-6, IL-17 and TNF-α in PBMCs from psoriasis vulgaris patients. In addition, IL-29 enhanced the IL-6 and IL-8 expression from the HaCat cells.</p></span> <span id="abst0030" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0035">Conclusion</span><p id="spar0050" class="elsevierStyleSimplePara elsevierViewall">This study provides the first observations on the association of IL-29 and psoriasis vulgaris and showed elevated IL-29 serum levels. The authors suggest that IL-29 may play a role in the pathogenesis of psoriasis vulgaris.</p></span>" "secciones" => array:5 [ 0 => array:2 [ "identificador" => "abst0005" "titulo" => "Background" ] 1 => array:2 [ "identificador" => "abst0010" "titulo" => "Objective" ] 2 => array:2 [ "identificador" => "abst0015" "titulo" => "Methods" ] 3 => array:2 [ "identificador" => "abst0020" "titulo" => "Results" ] 4 => array:2 [ "identificador" => "abst0030" "titulo" => "Conclusion" ] ] ] ] "NotaPie" => array:2 [ 0 => array:2 [ "etiqueta" => "☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0015">How to cite this article: Fu LX, Chen T, Guo ZP, Cao N, Zhang LW, Zhou PM. Enhanced serum interferon-lambda 1/interleukin-29 levels in patients with psoriasis vulgaris. An Bras Dermatol. 2021;96:416–21.</p>" ] 1 => array:2 [ "etiqueta" => "☆☆" "nota" => "<p class="elsevierStyleNotepara" id="npar0020">Study conducted at the Department of Dermatovenereology, Chengdu Second People’s Hospital and Open laboratory, West China Institute of Woman and Children’s Health, West China Second University Hospital, Sichuan University, Chengdu, Sichuan, China.</p>" ] ] "multimedia" => array:3 [ 0 => array:8 [ "identificador" => "fig0005" "etiqueta" => "Figure 1" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr1.jpeg" "Alto" => 1937 "Ancho" => 2500 "Tamanyo" => 160386 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0005" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0005" class="elsevierStyleSimplePara elsevierViewall">Increased serum IL-29 levels in PV patients. Serum levels of IL-29 in patients with PV and AD and healthy controls were determined by ELISA. (A) Serum IL-29 levels in patients with PV in the acute stage were significantly higher than those in AD patients and control subjects; p-values are based on the Mann-Whitney <span class="elsevierStyleItalic">U</span> Test. (B) Wilcoxon Signed Ranks Test for paired data showed that serum IL-29 levels of 17 patients with PV in the acute stage were significantly higher than those in the convalescent stage. (C) A positive correlation was shown between IL-29 serum levels and PASI scores in PV patients by Spearman tests.</p>" ] ] 1 => array:8 [ "identificador" => "fig0010" "etiqueta" => "Figure 2" "tipo" => "MULTIMEDIAFIGURA" "mostrarFloat" => true "mostrarDisplay" => false "figura" => array:1 [ 0 => array:4 [ "imagen" => "gr2.jpeg" "Alto" => 2928 "Ancho" => 2500 "Tamanyo" => 185471 ] ] "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0010" "detalle" => "Figure " "rol" => "short" ] ] "descripcion" => array:1 [ "en" => "<p id="spar0010" class="elsevierStyleSimplePara elsevierViewall">(A–C) IL-29 induced IL-6, IL-17 and TNF-α mRNA expression in PBMCs from PV patients. PBMCs obtained from 10 PV patients were treated with IL-29 100 ng/mL or PBS for 6 h. After that, mRNA expression of IL-6, IL-17 and TNF-α in PBMCs were measured by Real-time quantitative PCR. IL-29 obviously enhanced IL-6, IL-17 and TNF-α mRNA expression in PBMCs; p-values are based on <span class="elsevierStyleItalic">t-</span>test. n = 10, *p < 0.05, **p < 0.01, compared with control group. (D–E) IL-29 enhanced IL-6 and IL-8 mRNA expression in HaCat cells. HaCaT cells were treated with recombinant IL-29 (1 ng/mL, 10 ng/mL, 100 ng/mL, 1000 ng/mL) or TNF-α (10 ng/mL) for 2 h. After that, mRNA expression of IL-6 and IL-8 in HaCat cells was measured by Real-time quantitative PCR. IL-29 obviously enhanced IL-6 and IL-8 mRNA in HaCat cells; p-values are based on the One-way analysis of variance. n = 10, *p < 0.05, **p < 0.01, compared with control group. All data are expressed as mean ± SD.</p>" ] ] 2 => array:8 [ "identificador" => "tbl0005" "etiqueta" => "Table 1" "tipo" => "MULTIMEDIATABLA" "mostrarFloat" => true "mostrarDisplay" => false "detalles" => array:1 [ 0 => array:3 [ "identificador" => "at0015" "detalle" => "Table " "rol" => "short" ] ] "tabla" => array:3 [ "leyenda" => "<p id="spar0020" class="elsevierStyleSimplePara elsevierViewall">PV, Psoriasis Vulgaris; AD, Atopic Dermatitis; NA, Not Applicable.</p>" "tablatextoimagen" => array:1 [ 0 => array:2 [ "tabla" => array:1 [ 0 => """ <table border="0" frame="\n \t\t\t\t\tvoid\n \t\t\t\t" class=""><thead title="thead"><tr title="table-row"><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black"> \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">PV \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">AD \t\t\t\t\t\t\n \t\t\t\t\t\t</th><th class="td" title="\n \t\t\t\t\ttable-head\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t" scope="col" style="border-bottom: 2px solid black">Controls \t\t\t\t\t\t\n \t\t\t\t\t\t</th></tr></thead><tbody title="tbody"><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Number \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">41 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">23 \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">38 \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Sex \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">21 M / 20 F \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">11 M / 12 F \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">20 M / 18 F \t\t\t\t\t\t\n \t\t\t\t</td></tr><tr title="table-row"><td class="td-with-role" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t ; entry_with_role_rowhead " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">Disease activity \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">15.71 (4.8–36.4)<a class="elsevierStyleCrossRef" href="#tblfn0005"><span class="elsevierStyleSup">a</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">34.87 (18.5–67)<a class="elsevierStyleCrossRef" href="#tblfn0010"><span class="elsevierStyleSup">b</span></a> \t\t\t\t\t\t\n \t\t\t\t</td><td class="td" title="\n \t\t\t\t\ttable-entry\n \t\t\t\t " align="left" valign="\n \t\t\t\t\ttop\n \t\t\t\t">NA \t\t\t\t\t\t\n \t\t\t\t</td></tr></tbody></table> """ ] "imagenFichero" => array:1 [ 0 => "xTab2657868.png" ] ] ] "notaPie" => array:2 [ 0 => array:3 [ "identificador" => "tblfn0005" "etiqueta" => "a" "nota" => "<p class="elsevierStyleNotepara" id="npar0005">Disease activity in PV patients was assessed by the Psoriasis Area and Severity Index (PASI).</p>" ] 1 => array:3 [ "identificador" => "tblfn0010" "etiqueta" => "b" "nota" => "<p class="elsevierStyleNotepara" id="npar0010">Disease activity in AD patients was assessed by scoring AD (SCORAD) index.</p>" ] ] ] "descripcion" => array:1 [ "en" => "<p id="spar0015" class="elsevierStyleSimplePara elsevierViewall">Cohort demographics.</p>" ] ] ] "bibliografia" => array:2 [ "titulo" => "References" "seccion" => array:1 [ 0 => array:2 [ "identificador" => "bibs0005" "bibliografiaReferencia" => array:22 [ 0 => array:3 [ "identificador" => "bib0005" "etiqueta" => "1" "referencia" => array:1 [ 0 => array:2 [ "contribucion" => array:1 [ 0 => array:2 [ "titulo" => "Expression and release of IL-29 by mast cells and modulation of mast cell behavior by IL-29" "autores" => array:1 [ 0 => array:2 [ "etal" => true "autores" => array:6 [ 0 => "S. 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