Johanna E Kalmari, Iida Rantalainen, Laura Kummola, Marja Roslund, Heini Huhtala, Riikka Puhakka, Pekka Autio, Heikki Hyöty, Vesa P Hytönen, Aki Sinkkonen, Olli H Laitinen
{"title":"Testing the safety of nature-based microbial exposure in atopic dermatitis patients: a randomized, placebo-controlled, double-blinded pilot trial.","authors":"Johanna E Kalmari, Iida Rantalainen, Laura Kummola, Marja Roslund, Heini Huhtala, Riikka Puhakka, Pekka Autio, Heikki Hyöty, Vesa P Hytönen, Aki Sinkkonen, Olli H Laitinen","doi":"10.1684/ejd.2026.5168","DOIUrl":"https://doi.org/10.1684/ejd.2026.5168","url":null,"abstract":"<p><p>The biodiversity hypothesis posits that contact with microbial biodiversity is beneficial for human health, and that the loss of such contact may contribute to immune-mediated diseases such as atopy. Based on this hypothesis, we aimed to investigate whether a lotion containing a highly diverse mixture of inactivated natural microbes is a safe and feasible method to administer nature-based microbial exposure to humans, and to assess its effects on healthy and atopic skin. Participants with atopic dermatitis applied a lotion containing 1% of inactivated microbial extract to one side of their body and a placebo lotion to the other side for 28 days. No other creams were used simultaneously on the areas examined. The followed parameters were transepidermal water loss and erythema measurements, SCORAD index (scoring of AD), adverse effects, cytokines from skin tape strip samples and the skin microbiome. Microbial extract in lotion was well tolerated. It did not significantly affect atopic eczema severity, transepidermal water loss, erythema, total bacterial community composition or pro-inflammatory cytokines of atopic skin compared to placebo. Levels of the cytokines IL-1β, IL-22, IL-33, and the antimicrobial peptide hBD-2 decreased on atopic lesions, but this effect could not be separated from placebo. Daily use of diverse, inactivated microbial extract in lotion was well tolerated by participants with atopic dermatitis in a 28-day trial under supervision of a dermatologist. This method offers a novel and safe approach to introducing nature-based microbial exposure for healthy individuals and those with atopic dermatitis.</p>","PeriodicalId":11968,"journal":{"name":"European Journal of Dermatology","volume":"36 5","pages":"0"},"PeriodicalIF":1.9,"publicationDate":"2026-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149215443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Husnaa Fathima Ali Azamathullah Khan, Tugba Aydin, Iona Watts, Ryan Syed, Amy Prideaux, Kalina Bridgewater, Kyriaki Stefania Mitsaki, Daniel Keith
{"title":"Ink matters: the ink test improves diagnostic confidence for seborrhoeic keratosis.","authors":"Husnaa Fathima Ali Azamathullah Khan, Tugba Aydin, Iona Watts, Ryan Syed, Amy Prideaux, Kalina Bridgewater, Kyriaki Stefania Mitsaki, Daniel Keith","doi":"10.1684/ejd.2026.5132","DOIUrl":"https://doi.org/10.1684/ejd.2026.5132","url":null,"abstract":"","PeriodicalId":11968,"journal":{"name":"European Journal of Dermatology","volume":"36 5","pages":"464-465"},"PeriodicalIF":1.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149164117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tomoyuki Hioki, Yoko Mizutani, En Shu, Hiroaki Iwata
{"title":"Long-term apremilast treatment in a patient with HIV infection, previous HBV/HCV infection, and subsequent diffuse large B-cell lymphoma.","authors":"Tomoyuki Hioki, Yoko Mizutani, En Shu, Hiroaki Iwata","doi":"10.1684/ejd.2026.5135","DOIUrl":"https://doi.org/10.1684/ejd.2026.5135","url":null,"abstract":"","PeriodicalId":11968,"journal":{"name":"European Journal of Dermatology","volume":"36 5","pages":"459-461"},"PeriodicalIF":1.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149165640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diana Bernardo, Marco Sousa, João Domingues, Ana Maria Lé, André Coelho, Glória Cunha Velho
{"title":"Lichen planus pemphigoides induced by pembrolizumab: a case report.","authors":"Diana Bernardo, Marco Sousa, João Domingues, Ana Maria Lé, André Coelho, Glória Cunha Velho","doi":"10.1684/ejd.2026.5163","DOIUrl":"https://doi.org/10.1684/ejd.2026.5163","url":null,"abstract":"","PeriodicalId":11968,"journal":{"name":"European Journal of Dermatology","volume":"36 5","pages":"486-487"},"PeriodicalIF":1.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149164464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparative drug survival of biologic classes in psoriasis: a Japanese single-centre cohort study.","authors":"Daisuke Watabe, Kanako Tsunoda, Akemi Hamabata, Maki Goto, Wakako Yoshioka, Hiroo Amano","doi":"10.1684/ejd.2026.5140","DOIUrl":"10.1684/ejd.2026.5140","url":null,"abstract":"<p><p>Drug survival reflects the long-term effectiveness, safety, and tolerability of biologic therapies in routine clinical practice. To compare drug survival among currently available biologic classes in Japanese patients with psoriasis and to evaluate reason-specific discontinuation. We conducted a retrospective cohort study including 538 biologic treatment episodes from 311 patients treated at a tertiary dermatology centre in Japan. Tumour necrosis factor, interleukin-17, interleukin-23, and interleukin-12/23 inhibitors were compared. Overall drug discontinuation was assessed using multivariable Cox proportional hazards models with cluster-robust standard errors. Discontinuation due to ineffectiveness and adverse events was evaluated using Fine-Gray competing risk models. Compared with tumour necrosis factor inhibitors, interleukin-23 inhibitors were associated with more favourable overall drug survival (adjusted hazard ratio: 0.43, 95% confidence interval: 0.25-0.74; p=0.002), which remained significant in the 104-week analysis (hazard ratio: 0.50, 95% confidence interval: 0.28-0.91; p=0.023). Interleukin-17 inhibitors and ustekinumab did not differ significantly from tumour necrosis factor inhibitors in the primary analysis. In competing risk analyses, interleukin-23 inhibitors showed a lower risk of adverse event-related discontinuation than tumour necrosis factor inhibitors (subdistribution hazard ratio: 0.10, 95% confidence interval: 0.02-0.59; p=0.010), whereas no significant class differences were observed for ineffectiveness-related discontinuation. Interleukin-23 inhibitors showed the most favourable drug survival profile, primarily driven by reduced adverse event-related discontinuation.</p>","PeriodicalId":11968,"journal":{"name":"European Journal of Dermatology","volume":"36 5","pages":"432-438"},"PeriodicalIF":1.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149164833","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Junko Kunioka, Yuko Ehara, Shotaro Ishihara, Tsuyoshi Kitaura, Yuichi Yoshida
{"title":"Mixed abscesses due to Klebsiella pneumoniae-Candida albicans of the lower legs complicated by septic pulmonary embolism: a case report and comprehensive review.","authors":"Junko Kunioka, Yuko Ehara, Shotaro Ishihara, Tsuyoshi Kitaura, Yuichi Yoshida","doi":"10.1684/ejd.2026.5154","DOIUrl":"https://doi.org/10.1684/ejd.2026.5154","url":null,"abstract":"","PeriodicalId":11968,"journal":{"name":"European Journal of Dermatology","volume":"36 5","pages":"476-478"},"PeriodicalIF":1.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149170843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"sQUIZ your knowledge! Papular eruption on the upper abdomen of a young woman.","authors":"Inês Pereira Amaral, Ivânia Soares, Joana Antunes","doi":"10.1684/ejd.2026.5164","DOIUrl":"https://doi.org/10.1684/ejd.2026.5164","url":null,"abstract":"","PeriodicalId":11968,"journal":{"name":"European Journal of Dermatology","volume":"36 5","pages":"489-490"},"PeriodicalIF":1.9,"publicationDate":"2026-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149164654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}