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[This corrects the article DOI: 10.1371/journal.pone.0321140.].Weiterlesen

Abstract Psoriasis, a chronic and recurring disease, is closely associated with lipid metabolism. This study aims to identify differentially expressed genes (DEGs) and their functional pathways associated with psoriasis to uncover new therapeutic targets. We leveraged Gene Expression Omnibus (GEO) datasets for DEGs analysis in psoriasis. Gene Set Enrichment Analysis (GSEA), Gene Set Variation Analysis (GSVA), Weighted Gene Co-expression Network Analysis (WGCNA), and single-sample GSEA (ssGSEA) were used to investigate the roles of lipid metabolism genes in psoriasis progression and immune alterations. An RBP-mRNA network revealed post-transcriptional regulatory mechanisms. Our findings revealed 3,839 DEGs, including 1,775 upregulated and 2,064 downregulated genes in psoriatic samples compared to controls. Enrichment analysis showed that immune-related pathways such as cytoplasmic DNA sensing pathways and NOD-like receptor signaling pathways were significantly enriched. WGCNA identified modules highly correlated with lipid metabolism and screened out key genes such as AACS, HSD11B1 and GATA6. ROC curve analysis showed that these genes had a high discriminatory ability (AUC > 0.85) within the analyzed dataset, suggesting their potential as novel biomarkers. Immune infiltration analysis revealed significant differences in 27 types of immune cells between patients with psoriasis and the control group. This study provides new clues for the molecular mechanism of psoriasis and potential therapeutic targets. Weiterlesen

Background and objectivesSystemic inflammation indices derived from complete blood counts (CBC) are accessible markers of inflammatory burden, but their relationship with circulating cytokines in psoriasis remains unclear. We investigated associations between CBC-derived indices and serum cytokines in psoriasis.Materials and methodsIn this cross-sectional study, we included 28 patients with psoriasis and 23 healthy controls. Serum IL-17, IL-22, IL-23, IL-31, IL-33, IL-36, TNF-α, TGF-β, and IFNγ were quantified by ELISA. CBC-derived indices were computed (neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), systemic immune-inflammation index (SII), systemic inflammation response index (SIRI), and pan-immune-inflammation value (PIV). Case-control comparisons used the full sample. Cytokine-index associations were evaluated in psoriasis patients using bivariate correlations and multivariate GLM adjusted for age, smoking, and NAFLD. Multiplicity was controlled using Benjamini-Hochberg false discovery rate (BH-FDR); prespecified sensitivity analyses used log-transformed cytokines and Spearman correlations.ResultsPsoriasis patients had higher levels of all cytokines (all p < 0.001) and higher SIRI versus controls (p < 0.001; q = 0.005). PIV showed a nominal case-control difference (p = 0.022) that did not remain significant after BH-FDR (q = 0.055), while NLR, PLR, and SII did not differ. In adjusted multivariate GLM, TGF-β showed a global association with the joint set of indices (Pillai's trace = 0.295; p = 0.039) that did not survive BH-FDR (q = 0.507) and was attenuated with log-transformation. Nominal univariate effects for TNF-α on SIRI (F = 4.600; p = 0.039) and PIV (F = 5.660; p = 0.023) did not remain significant after BH-FDR.ConclusionsSIRI was consistently elevated in psoriasis, whereas PIV showed a nominal difference versus controls. Across exploratory analyses, SIRI and PIV showed the most consistent directional co-variation with cytokines, but associations were modest. These findings are hypothesis-generating and support further validation in larger cohorts to determine whether CBC-derived indices can serve as scalable adjunct markers of inflammatory activity in psoriasis.Weiterlesen

Background and objectivePsoriatic arthritis (PsA) is an inflammatory, chronic and progressive musculoskeletal disease associated with psoriasis. The validation of the Spanish version of the Psoriatic arthritis UnclutteRed screening Evaluation (PURE-4) questionnaire has been published previously. The present analysis studied the performance of the PURE-4 questionnaire for the early detection of PsA one year before its diagnosis.Materials and methodsThis was an observational multicenter study, including two cross-sectional assessments, with primary data collection in routine clinical practice in Spain. Adult patients with psoriasis and confirmed not having PsA diagnosis during Assessment I completed Assessment II by the rheumatologist one year (±2 months) after answering the PURE-4 questionnaire. This work presents the results of Assessment II, to confirm/rule out the presence of PsA in patients with psoriasis one year after PURE-4 answering. The analysis, involving the results from Assessment II, will evaluate the performance of the PURE-4 questionnaire for the early detection of potential PsA in terms of sensitivity and specificity.ResultsThere were 219 evaluable patients, 56.2% male, and the mean (standard deviation [SD]) age was 46.8 (12.5) years. At one year, the PsA diagnosis was confirmed in 12 (5.5%) patients, representing 26.1% of the total number of patients with PsA diagnosed since the beginning of the study. The mean (SD) PURE-4 score was 2.4 (1.1) for patients with PsA and 1.2 (1.2) for patients without a diagnosis of PsA (p = 0.0016). The area under the receiver-operating characteristic (ROC) curve confirmed the good quality of the questionnaire (0.7618; 95% CI: 0.6530-0.8706; n = 217). PURE-4 showed a sensitivity of 75.0% and a specificity of 62.9%.ConclusionsThe PURE-4 questionnaire offers good clinimetric capabilities for the early detection of PsA with a score ≥2. Of the total number of patients with PsA, one in four were detected one year after answering positively to the questionnaire, which would help to predict which patients are at high risk of developing PsA. The authors reinforce the recommendation to closely follow up with these patients.Weiterlesen

BackgroundGiven the proinflammatory cascade elicited by tumor necrosis factor-α (TNF-α) in psoriasis, multiple TNF-α-targeted biologics have been developed for psoriasis treatment. Although systemic macromolecular biologics are widely used, a crucial therapeutic gap remains for mild-to-moderate psoriasis, underscoring an unmet need for more effective topical drugs suppressing TNF-induced inflammatory signaling.ObjectiveTo identify a novel potent natural small-molecule drug suppressing TNF-induced inflammatory signaling and elucidate its therapeutic mechanism in psoriasis.MethodsFirst, candidate small-molecule drugs were screened out through a high-throughput screening platform. Next, the therapeutic effect of Isolinderalactone was evaluated through topical application in the imiquimod (IMQ)-induced psoriasis-like mouse model. Subsequently, RNA sequencing (RNA-seq) analysis of TNF-α-stimulated HaCaT cells and epidermis of IMQ-treated mice identified key transcriptomic alterations induced by Isolinderalactone treatment. Finally, anti-psoriasis effects and underlying mechanisms of Isolinderalactone were verified in both in vivo and in vitro experiments.ResultsIsolinderalactone was identified as a potent drug suppressing TNF-related signaling with low cytotoxicity. Topical application of Isolinderalactone significantly alleviated IMQ-induced psoriasis-like dermatitis. Conjoint analysis of RNA-seq for TNF-α-stimulated HaCaT cells and epidermis from lesions of IMQ-treated mice revealed Isolinderalactone downregulated the expression of TNF-α, interleukin-17 (IL-17) and S100-related inflammatory factors in epidermal keratinocytes. Mechanistically, Isolinderalactone significantly inhibited the TNF-α/STAT3 inflammatory pathways in epidermal keratinocytes and exerted an anti-inflammatory effect.ConclusionIsolinderalactone exhibits anti-inflammatory activity through multiple mechanisms, highlighting the potential of topical Isolinderalactone therapy for mild-to-moderate psoriasis.Weiterlesen

BackgroundPsoriatic disease has a complex effect on bone metabolism, resulting in both pathological bone formation and bone resorption. However, microstructural changes in cortical and trabecular compartments remain poorly understood. The aim of this study was to investigate the prevalence and determinants of bone microarchitectural damage in patients with psoriatic disease.MethodsWe performed a cross-sectional study in patients with psoriasis (PsO), psoriatic arthritis (PsA) and age-matched healthy controls (HCs) recruited into the Department of Dermatology and Rheumatology of Verona centre. We conducted high-resolution peripheral quantitative CT of the radius and finger joints of the non-dominant hand. Bone microstructure parameters and finite element analysis (uFEA) were calculated.Results51 patients with PsO and 39 patients with PsA were consecutively enrolled in the study. 24 age-matched HCs were enrolled. Distal radius total and cortical volumetric bone mineral density (Ct.BMD) levels were lower in patients with PsA and PsO compared with HC. On distal radius uFEA analysis, we found a significant reduction of stiffness in PsA compared with both HC and PsO. At the distal interphalangeal (DIP) joints, Ct.BMD and trabecular volumetric bone mineral density were lower in PsA and PsO compared with HC. Nail involvement in psoriatic disease was negatively associated with bone stiffness at the proximal and distal region of the DIPs.ConclusionPsoriatic disease negatively impacted bone integrity. Patients with psoriatic disease seemed to have lower bone density and more microarchitectural alteration that impacted on biomechanics properties. Nail involvement was associated with decreased bone stiffness in psoriatic disease.Weiterlesen

# Neue Hoffnung: Mikronadeln könnten Psoriasis besser behandeln Forscher arbeiten an einer neuen Behandlungsmethode für Psoriasis. Sie nutzen winzige Nadeln, um Wirkstoffe direkt in die Haut zu bringen.[1][3][4] Diese Mikronadeln sind so klein, dass sie kaum Schmerzen verursachen. Das ist ein großer Vorteil gegenüber normalen Injektionen. Die Idee dahinter ist clever: Die Nadeln durchstechen nur die oberste Hautschicht.[4] So gelangen Medikamente genau dorthin, wo sie wirken sollen. Gleichzeitig verursachen sie weniger Nebenwirkungen als andere Methoden. Besonders interessant ist die Behandlung mit sogenannter siRNA. Das ist ein Stoff, der bestimmte Gene in der Haut ausschalten kann.[1] Wenn man diese Gene stumm macht, können entzündliche Prozesse gehemmt werden. Das könnte die Symptome von Psoriasis verringern. Die neuen Technologien zeigen, dass Forscher ständig an besseren Lösungen arbeiten.[3][4] Die bisherigen Behandlungen helfen vielen Menschen gut. Aber neue Ansätze könnten in Zukunft noch sanfter und wirksamer sein. Patienten sollten trotzdem mit ihrem Arzt klären, welche Therapie für sie passt. Nicht jedes neue Verfahren ist sofort für alle verfügbar. Originaltitel: Transdermal siRNA delivery via biomineralized nanoparticle-incorporated microneedles modulates cuproptosis-ferroptosis interaction for psoriasis therapy Link zur Quelle

Originaltitel: Bimekizumab efficacy in scalp, nail and palmoplantar psoriasis versus comparators and over 4 years. Link zur Quelle

Originaltitel: Real-World Burden of Generalized Pustular Psoriasis in a French Observational Study: Prevalence, Incidence, Healthcare Resource Utilization, Comorbidities, Treatment Use, and Mortality. Link zur Quelle

Trial number: 2023-506333-29-00 Overall trial status: Ongoing, recruiting Trial title: A phase 3B exploratory multicenter open-label study to evaluate the effect of bimekizumab on gene expression biomarkers in study participants with moderate to severe plaque psoriasis. Medical conditions: Psoriatic arthritis, Moderate to Severe Plaque Psoriasis Status in each country: Poland:Ongoing, recruiting, Germany:Ongoing, recruiting Trial phase: Phase III and phase IV (Integrated) Therapeutic Areas: Diseases [C] - Immune System Diseases [C20] Primary end point: Composite gene expression score using reverse transcription-polymerase chain reaction (RT-PCR) in lesional skin at Baseline and Week 48 using preselected genes based on Bimekizumab mechanism of action and PSO disease biology pathways Secondary end point: 1. Treatment-emergent adverse events (TEAEs) from Baseline to the end of the Safety Follow-Up (SFU) 2. Treatment-emergent serious adverse event (TESAEs) from Baseline to the end of the SFU 3. TEAEs leading to permanent discontinuation of IMP from Baseline to the end of the SFU Age of participants: 65+ years, 18-64 years Gender of participants: Female, Male Trial region: In both EEA and non-EEA Planned number of participants: 46 Sponsor: UCB Biopharma Sponsor type: Pharmaceutical company Trial product: bimekizumab Results posted: No Overall decision date: 15/08/2024 Countries decision date: DE: 15/08/2024, PL: 26/08/2024 Last updated date: 07/03/2026View the full article

Originaltitel: Ixekizumab in children with active psoriatic and enthesitis-related juvenile idiopathic arthritis (COSPIRIT-JIA): a multicentre, open-label, 16-week, Bayesian trial including a randomised reference group to adalimumab. Link zur Quelle

# HeROPA-Studie: HRO350 bei Psoriasis Die HeROPA-Studie war eine randomisierte, doppelblinde, placebokontrollierte Phase-2B-Studie, die die Wirksamkeit und Sicherheit von HRO350 bei leichter bis mittelschwerer Psoriasis untersucht hat. An der Studie nahmen über 500 Patienten in fünf europäischen Ländern teil. Das Ziel war es, festzustellen, ob HRO350 wirksam gegen Psoriasis-Symptome ist und welche Dosis am besten funktioniert. Nach dem primären Endpunkt bei 26 Wochen zeigte sich eine unerwartet hohe Placebo-Rate, doch die 52-Wochen-Daten offenbarten positive Effekte bei sekundären Endpunkten, insbesondere bei der Erreichung einer klaren oder fast klaren Haut (PGA 0/1). HRO350 wurde gut vertragen und es gab keine Sicherheitsbedenken. ## Die Substanz HRO350 HRO350 ist ein natürliches, öl-basiertes Nahrungsergänzungsmittel aus Heringsrogen. Es enthält spezielle Fettstoffe (Phospholipide) mit mehrfach ungesättigten Fettsäuren aus dem Meer – das sind eigentlich Stoffe, die auch in gesunder Ernährung vorkommen, beispielsweise in Fischöl. Studien deuten darauf hin, dass HRO350 Entzündungsprozesse im Körper bremsen kann, was bei Psoriasis hilfreich sein könnte, da diese Hautkrankheit von Entzündungen verursacht wird. HRO350 wird als weiche Kapseln zum Schlucken eingenommen – täglich mehrere Kapseln morgens und abends. --- Originaltitel: A phase 2B, multicenter, randomized, double-blind, placebo-controlled, dose-finding, efficacy and safety study of HRO350 in subjects with mild-to-moderate psoriasis (the 'HeROPA' study) Erkrankung: Psoriasis (leicht bis mittelschwer) Phase: Phase 2B (Therapeutic Exploratory) Firma: Arctic Bioscience AS Art der Verabreichung: Soft Capsules (oral) https://euclinicaltrials.eu/search-for-clinical-trials/?lang=en&EUCT=2022-501850-12-00

**Hauterkrankungen und Psyche: Was Psoriasis und Vitiligo verbindet** Menschen mit Hauterkrankungen kämpfen oft mit mehr als nur den sichtbaren Symptomen. Eine neue deutsche Studie zeigt jetzt, wie häufig psychische Probleme bei verschiedenen Hautkrankheiten auftreten[1]. Forscher haben Daten von fast 3 Millionen Versicherten analysiert. Sie verglichen Menschen mit Vitiligo mit Psoriasis-Patienten und anderen Gruppen[1]. Das Ergebnis ist wichtig für Sie: Menschen mit Vitiligo haben deutlich mehr Angststörungen und Depressionen als Psoriasis-Patienten. Bei Vitiligo treten diese psychischen Probleme etwa 2 bis 3 Mal häufiger auf[1]. Aber auch bei Psoriasis ist die psychische Belastung hoch. Weltweit berichten über 58 Prozent der Patienten von Depressionen oder Angst[2]. Viele vermeiden soziale Kontakte oder fühlen sich weniger selbstbewusst[2]. Die gute Nachricht: Experten fordern jetzt bessere psychologische Unterstützung für alle Patienten mit sichtbaren Hauterkrankungen. Das bedeutet, dass Ärzte künftig nicht nur die Haut, sondern auch die Psyche behandeln sollten[1][2]. Wenn Sie mit Psoriasis kämpfen und sich niedergeschlagen fühlen, sprechen Sie mit Ihrem Arzt. Psychologische Hilfe ist genauso wichtig wie Hautbehandlungen. Originaltitel: Prevalence and comparative risk of mental health disorders in persons with vitiligo: a retrospective matched cohort study using claims data with expert-informed case validation. Link zur Quelle

Trial number: 2023-506296-97-00 Overall trial status: Ongoing, recruiting Trial title: A Multicenter, Randomized, Double-Blind Placebo-Controlled Phase 3 Study to Evaluate the Efficacy, Safety and Pharmacokinetics of Deucravacitinib in Adolescent Subjects (12 years to less than 18 years) with Moderate to Severe Plaque Psoriasis Medical conditions: Moderate to Severe Plaque Psoriasis Status in each country: Germany:Ongoing, recruiting, Romania:Authorised, recruiting, Italy:Ongoing, recruiting, Belgium:Ongoing, recruiting, Poland:Ongoing, recruiting, Hungary:Ongoing, recruiting, Spain:Ongoing, recruiting Trial phase: Therapeutic confirmatory (Phase III) Therapeutic Areas: Diseases [C] - Immune System Diseases [C20] Primary end point: Efficacy: Participants achieving at least 75% improvement in Psoriasis Area and Severity Index (PASI 75) at Week 16., Efficacy: Participants achieving a sPGA score of 0 (clear) or 1 (almost clear) with at least a 2-point reduction from baseline at Week 16., Safety (LTE): AEs and SAEs through study completion., Safety (LTE): Monitoring of growth, including body weight and height and sexual maturation, through study completion. Secondary end point: Efficacy: Participants achieving at least 90% improvement in PASI (PASI 90) Week 16., Efficacy: Change from baseline in PASI at Week 16., Efficacy: Change from baseline in BSA involvement at Week 16., Safety: Treatment emergent AEs and SAEs, laboratory parameters, physical examination, and vital signs through study completion., Safety: Participants with protective titers of antibodies to measles, tetanus, and pertussis at Week 16., Safety: Monitoring of growth including body weight and height, and sexual maturation through study completion., Efficacy (LTE): Participants achieving 75% improvement in PASI (PASI 75) over time through study completion., Efficacy (LTE): Participants achieving an sPGA score of 0 (clear) or 1(almost clear) with at least a 2-point reduction from baseline over time through study completion. Age of participants: 0-17 years Gender of participants: Female, Male Trial region: In both EEA and non-EEA Planned number of participants: 145 Sponsor: Bristol-Myers Squibb Services Unlimited Company Sponsor type: Pharmaceutical company Trial product: Placebo to match deucravacitinib 2mg minitablets in sachet, oral use, Placebo to match deucravacitinib 6mg tablets in bottle, oral use, deucravacitinib, deucravacitinib Results posted: No Overall decision date: 08/10/2025 Countries decision date: BE: 08/10/2025, DE: 08/10/2025, HU: 10/10/2025, IT: 10/10/2025, RO: 13/10/2025, ES: 09/10/2025, PL: 10/10/2025 Last updated date: 13/10/2025View the full article

# Wenn die Haut leidet, leidet auch die Seele Menschen mit Schuppenflechte, Neurodermitis oder Hidradenitis suppurativa brauchen nicht nur eine gute Hautbehandlung. Sie benötigen auch psychologische Unterstützung. Das zeigt jetzt eine große internationale Studie mit insgesamt über eine Million Patienten.[1] Die Forschung hat ergeben: Patienten mit diesen Hauterkrankungen suchen deutlich häufiger psychologische Hilfe auf als gesunde Menschen. Bei Neurodermitis ist der Anstieg besonders groß. Diese Patienten gehen etwa dreimal häufiger zur Psychotherapie als Kontrollpersonen ohne Hauterkrankung.[1] **Aber warum ist das so?** Die chronischen Hautleiden verändern die Lebensqualität stark. Sichtbare Flecken und Ausschläge belasten viele Menschen emotional. Manche entwickeln Depressionen oder Angststörungen.[3] Zudem beeinflussen die Entzündungsprozesse in der Haut auch das Nervensystem und können Stimmung und Psyche belasten.[3] Interessant: Männer und Frauen sind unterschiedlich betroffen. Bei Neurodermitis leiden Frauen stärker unter psychischen Belastungen. Bei Schuppenflechte ist es etwas ausgewogener verteilt.[1] **Das Fazit der Studie:** Ärzte sollten Haut- und Seelenpflege gemeinsam angehen. Wer regelmäßig zur Hauttherapeut geht, sollte auch ein offenes Ohr für psychische Belastungen haben. Psychologische Hilfe gehört zur modernen Behandlung einfach dazu. Originaltitel: Psychiatric and Psychological Approach in Patients with Atopic Dermatitis, Hidradenitis Suppurativa and Psoriasis: A Propensity-Matched Real-World Cohort Study. Link zur Quelle

Originaltitel: Psychiatric and Psychological Approach in Patients with Atopic Dermatitis, Hidradenitis Suppurativa and Psoriasis: A Propensity-Matched Real-World Cohort Study - Dermatology and Therapy Link zur Quelle

Originaltitel: Editorial: Advancements in AI for the analysis and interpretation of large-scale data by omics techniques. Link zur Quelle

Originaltitel: Joint Assessment Matters: Diagnostic and Therapeutic Benefits of Interdisciplinary Psoriasis Care - Advances in Therapy Link zur Quelle

Originaltitel: Lateral hypothalamus directs stress-induced modulation of acute and psoriatic itch Link zur Quelle

# Magnesium: Das Wundermittel für deine Haut? Magnesium könnte für Menschen mit Psoriasis interessant sein. Der Mineralstoff hilft deinem Körper bei über 300 verschiedenen Prozessen.[1] Besonders wichtig: Er wirkt entzündungshemmend.[1][2] Das ist gute Nachricht für dich. Denn Psoriasis entsteht durch Entzündungen in der Haut.[1] Magnesium kann diese Entzündungen beruhigen und Rötungen reduzieren.[1] Stress verschlimmert Psoriasis oft. Hier hilft Magnesium gleich doppelt. Es senkt den Stresshormon Cortisol in deinem Körper.[4] Gleichzeitig verbessert es deine Schlafqualität.[1] Besserer Schlaf bedeutet weniger Stress für deine Haut. Auch die Hautbarriere profitiert. Magnesium unterstützt die natürliche Feuchtigkeitsversorgung deiner Haut.[1][2] Das ist wichtig, weil Psoriasis die Haut austrocknet. Du kannst Magnesium auf zwei Wegen nutzen. Entweder nimmst du es als Nahrungsergänzung. Oder du verwendest Cremes und Öle mit Magnesium.[1][4] Studien zeigen: Magnesiumreiche Bäder (wie mit Totes-Meer-Salz) verbessern die Hautstruktur deutlich.[4] Sprich mit deinem Arzt, bevor du Magnesium nimmst. So findest ihr gemeinsam die beste Form für dich. Originaltitel: The role of magnesium in dermatology Link zur Quelle

Originaltitel: Joint Assessment Matters: Diagnostic and Therapeutic Benefits of Interdisciplinary Psoriasis Care. Link zur Quelle

BackgroundSkin is the largest organ of the human body. It continuously encounters environmental toxicants, including airborne pollutants, which may induce many skin disorders, such as psoriasis. However, evidence on the association between airborne pollutants and psoriasis prevalence in China remains limited.MethodsWe used nationwide inpatient diagnostic data on psoriasis from 2021 to 2023, encompassing 149 744 cases across 31 provinces, municipalities, and autonomous regions in China, along with corresponding air pollution data. We analysed the spatial distribution and clustering patterns of psoriasis using the spatial autocorrelation analysis. We employed Pearson correlation analysis and Geodetector to explore the spatial heterogeneity of psoriasis and its association with airborne pollutants at the provincial level. We assessed the explanatory power of individual airborne pollutants and their combined effects on psoriasis prevalence.ResultsPearson correlation analysis revealed that PM10 (r = 0.604), PM2.5 (r = 0.429), air quality index (AQI) (r = 0.542), and NO2 (r = 0.476) have significant positive correlations with psoriasis prevalence. Psoriasis and its subtypes exhibited significant spatial heterogeneity and diverse clustering patterns across regions. Geodetector identified PM10 (q = 0.357; P = 0.000), AQI (q = 0.315; P = 0.000), and O3 (q = 0.264; P = 0.000) as key contributors to this spatial heterogeneity. Interactive detection analysis further revealed that the combined effects of specific pollutant pairs, including PM2.5 and SO2 (q = 0.790), PM10 and SO2 (q = 0.727), as well as O3 and SO2 (q = 0.704), played a pivotal role in explaining the prevalence of psoriasis. The other combinations also showed an important impact on psoriasis subtypes, including psoriasis vulgaris (PM2.5 and SO2) (q = 0.792), psoriasis erythematous (PM2.5 and SO2) (q = 0.852), psoriatic arthritis (PM10 and O3) (q = 0.840), and nail psoriasis (PM10 and O3) (q = 0.789).ConclusionsThe airborne pollutants influence psoriasis prevalence and its subtypes. With the largest global study of the Asian population, we provide novel insights into the impact of air pollution on psoriasis, guiding future public health policies and clinical interventions.Weiterlesen

No abstract supplied.Weiterlesen

No abstract supplied.Weiterlesen

IntroductionBiologic therapies have transformed the management of moderate-to-severe psoriasis but are associated with long-term treatment burden and substantial healthcare costs. Dose spacing, defined as extending dosing intervals in patients with controlled disease, has emerged as a potential optimization strategy. However, data on real-world implementation and clinician perspectives remain limited.MethodsWe conducted a national, cross-sectional survey among Portuguese dermatologists experienced in prescribing biologic therapies for psoriasis. An anonymous, web-based questionnaire assessed clinicians' perspectives and real-world practices regarding biologic dose spacing, including eligibility criteria, preferred biologic classes, implementation strategies, outcomes after loss of disease control, and limiting clinical factors.ResultsSeventy-five dermatologists completed the survey (response rate 48.4%). All respondents considered dose spacing feasible. The most frequently cited eligibility criteria were absolute Psoriasis Area and Severity Index (PASI) ≤ 1, body surface area (BSA) ≤ 1%, and a 90% improvement in PASI (PASI 90). Interleukin-23 (IL-23) inhibitors were perceived as the most suitable class for dose spacing (93.3%). In routine practice, dose spacing was applied frequently by 30.7% of respondents and occasionally by 48.0%. Most clinicians (69.3%) required more than 12 months of sustained disease control before initiating dose spacing, predominantly using progressive extension of dosing intervals (96.0%). IL-23 inhibitors were the biologics most frequently dose-spaced in current practice. Following loss of disease control, 86.7% reported successful recapture of response after reintroduction of standard dosing. The main factors limiting dose spacing were a history of difficult-to-control psoriasis (77.3%) and concomitant psoriatic arthritis (72.0%).ConclusionBiologic dose spacing is already integrated into clinical practice in Portugal. Further prospective studies are needed to establish standardized criteria and guide safe implementation.Weiterlesen