Acta dermatovenerologica Croatica : ADC最新文献

{"title":"he Influence of Academician Franjo Kogoj on Global Dermatology.","authors":"Tomislav Duvančić, Mirna Šitum","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Academician Franjo Kogoj graduated medicine in 1920 in Prague, where he then pursued training in dermatovenerology. During later years, he also visited other dermatology clinics in Europe, where he collaborated with renowned dermatologists of the time, such as in Breslau (present day Wroclaw in Poland) with Josef Jadassohn and in Strasbourg with Lucien-Marie Pautrier. He was also active in the famous Saint-Louis hospital in Paris. Academician Kogoj's scientific interests were especially focused on allergies, exanthemas, skin tuberculosis, and keratodermas. Kogoj was very active in defining a precise and useful terminology for various dermatological conditions, where the terminology was in many ways confusing and often overlapping, such as in cases of eczema and dermatitis. Kogoj performed experimental studies of allergic reactions in eczema and atopic dermatitis and introduced the term pruridermatitis (Pruridermatitis allergica chronica) into dermatological terminology instead of the name neurodermitis and other synonyms essentially describing atopic dermatitis (endogenous eczema, prurigo-asthma, prurigo Besnier). Academician Kogoj managed to define Mal de Meleda as a separate form of hereditary keratoderma and was engaged in the clinical symptomatology, serology, and therapy of syphilis, whereby he emphasized the so-called \"critical moment\" in the treatment of syphilis. Academician Kogoj's most famous scientific achievement was his histological definition of the spongiform pustule in the pathomorphology of psoriasis, which became a groundbreaking histological novelty in the classification of psoriasis, thus bearing Kogoj's name in the medical literature to this date. Academician Kogoj published many scientific and professional articles, books, monographs and contributions to manuals and textbooks. He was honored nationally as well as internationally as a leading expert in the field of medicine and dermatology, receiving many eminent awards and recognitions throughout his scientific career.</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 3","pages":"133-139"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140029967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vitiligo as a First Sign of Vogt-Koyanagi-Harada Disease.","authors":"Marija Vukojević, Nenad Vukojevic, Ante Vuković, Borna Rupčić, Mislav Blažević, Ante Blažević","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Vogt-Koyanagi-Harada (VKH) disease is a multisystem disorder characterized by bilateral granulomatous panuveitis resulting in serous retinal detachments, disk edema, and a sunset glow fundus development. Furthermore, it is associated with various extraocular findings, such as tinnitus, hearing loss, vertigo, poliosis, and vitiligo (1). VKH is considered to be an autoimmune disease mediated by T-cells targeting melanocyte antigen tyrosinase peptide (2). Moreover, VKH more often occurs in individuals with a genetic predisposition to the disease, including those of Asian and Hispanic heritage (3). Three disease categories have been recognized, including complete, incomplete, and probable VKH. Each category has different clinical features, varying from neurological and auditory manifestations to ophthalmologic and dermatologic findings (1). Herein, we present a case of chronic complete Vogt-Koyanagi-Harada disease, which started with vitiligo. CASE REPORT A forty-year-old female patient presented to the Department of Ophthalmology with photophobia, dull eye pain, and a gradual decrease in visual acuity over two months. In addition, at clinical examination, vitiligo spots were observed on the patient's hands and the periocular area. The patient's medical history revealed she had vitiligo from a young age. Additionally, she developed generalized epilepsy and headaches in adolescence. The neurologic symptoms had been treated, whereas dermatologic workup and treatment were never performed. It was also found that our patient was of Hispanic heritage, which later helped establish a diagnosis. Ophthalmologic examination revealed eye redness, hypotony, keratic precipitates, anterior chamber cells, and posterior synechiaes. Fundoscopy showed mild vitreous haze, optic disc and macular edema, chorioretinal thickening (also seen on eye ultrasound), and disturbance of retinal pigment epithelium (Figure 1). A standard diagnostic protocol for uveitis was performed. Serology for infectious causes was performed, and IgG for CMV and HSV 1 were positive. Tuberculosis testing was negative. HLA testing showed positive HLA-DR1, HLA B13/18, and HLA DQ-1 antigens. There were no cells in the intraocular fluid, and PCR of the fluid was negative for CMV and HSV 1 and 2. Considering the noninfectious uveitis, a history of neurological and dermatological disorders, and the Hispanic heritage of our patient, the diagnosis of Vogt-Koyanagi-Harada disease was established. Systemic methylprednisone in a 1.5 mg/kg dose was introduced during the first hospitalization. After slow tapering of the corticosteroid therapy, cyclosporine A in a 175 mg/day dose and azathioprine in a 100 mg/day dose were introduced for prolonged therapy. Although signs of eye inflammation were reduced, poor prognostic signs such as hypotony and optic disc edema were persistent. Therefore, the TNF-α inhibitor adalimumab was introduced. After the introduction of adalimumab, the disease was considered stable","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 4","pages":"229-231"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140862328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dermoscopic Features of Subcorneal Hematoma on the Palms and Soles: Differences from Acral Melanoma.","authors":"Sang-Hyeon Won, Kyung-Nam Bae, Kihyuk Shin, Hoon-Soo Kim, Hyun-Chang Ko, Byung-Soo Kim, Moon-Bum Kim","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>The diagnosis of subcorneal hematoma (SH) can be challenging because the clinical presentation of SH can resemble melanocytic lesions. Few studies have examined the characteristic dermoscopic features of SH, but a more detailed large-scale study is needed to overcome the diagnostic challenge of differentiating it from acral melanoma.</p><p><strong>Objectives: </strong>To describe the dermoscopic features of SH.</p><p><strong>Methods: </strong>We evaluated the clinical and dermoscopic features of 50 SH lesions from 43 patients at the Pusan National University Hospitals (Busan and Yangsan).</p><p><strong>Results: </strong>In the color analysis, 86% of cases showed the bruise color sign; 7 cases had a single color (red to purple: 2; black: 1; brown: 4). Typical dermoscopic features of SH, acral nevi, and acral melanoma-associated patterns were observed in 60%, 0%, and 72% of lesions, respectively. Hematoma-associated patterns were homogenously red-to-black with or without satellite globules (32%) and pebbles on the ridges (28%). Acral melanoma-associated patterns showed a parallel ridge pattern (PRP) (52%), irregular dots and globules (50%), polychromia (34%), asymmetry (24%), irregular blotches (10%), and ulcers (10%). No case showed blue-white veils, regression structures, atypical vascular patterns, or irregular fibrillar patterns. The bruise color sign was positive in most cases, with acral melanoma-associated patterns (88.9%).</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 4","pages":"192-197"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140856456","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hypersensitivity Reactions to Homemade Topical Preparations.","authors":"Mislav Rončević, Katarina Radas, Suzana Ljubojević Hadžavdić","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Homemade topical preparations are becoming increasingly popular due to the widespread belief that herbal and natural products are a safer and better option in the treatment of various conditions. However, homemade topical preparations can precipitate allergic and irritant reactions, depending on the herbal composition of the preparation. Hypersensitivity reactions to such preparations range from contact allergic dermatitis, contact irritant dermatitis, contact urticaria, toxic reaction, photosensitivity, and phototoxic reaction. In Europe, and especially in the Mediterranean area, medicinal herbs from the Compositae family and aromatic Mediterranean herbs are most frequently used in the formulation of topical preparations. Although plants are regarded as strong sensitizers, the number of reported cases of hypersensitivity reactions is relatively small. The problems are limitations in diagnostics due to the lack of necessary patch test substances and the danger of active sensitization during testing. Caution is required in patients prone to allergies and those with existing dermatoses, who should be advised to use registered preparations. The first step in management is cessation of exposure, followed by implementation of topical corticosteroids. Systemic corticosteroid therapy is reserved for more severe cases.</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 3","pages":"117-124"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140029926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Switching between JAK Inhibitors in Patients with Atopic Dermatitis: Unanswered Questions in Daily Clinical Practice.","authors":"Styliani Mastraftsi, Michail Bakakis, Aikaterini Tsiogka, Ileana Afroditi Kleidona, Stamatios Gregoriou","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Data on switching between agents in patients with atopic dermatitis (AD) are scarce (1-3). We report the case of a patient with severe AD and inadequate response to upadacitinib who showed a complete response after switching to abrocitinib. A 23-year-old male patient with severe AD was enrolled in the Measure Up double-blind, placebo-controlled, phase 3 randomized clinical trial. At baseline, the Eczema Area Severity Index (EASI) was 50.6, the Investigator's Global Assessment (IGA) was 4, the affected Body Surface Area (BSA) was 80%, and the Worst Pruritus-Numeric Rating Scale (WP-NRS) was 10/10 (Figure 1). At week 124, the patient discontinued participation in the trial, while EASI was 9.2, IGA 3, BSA 20%, and WP-NRS 5/10 at the time. After one month off treatment, and while expecting unblinding, the patient again presented with exacerbation of AD, since EASI was 45.6, IGA 4, BSA 80%, and WP-NRS 10/10. At that point of time, access to both dupilumab and tralokinumab was not available in Greece, while upadacitinib was avoided due to inadequate patient satisfaction, partly due to recurrent ocular herpes simplex infections during the previous upadacitinib treatment. The patient was prescribed abrocitinib 200 mg daily. One month after initiation of therapy, the patient achieved complete control of the disease (EASI 0.0, IGA 0, BSA 0%, and WP-NRS 0/10) (Figure 2). This has been maintained with no reported adverse events after 12 months of continuous treatment. After unblinding, the patient was confirmed to have received 15 mg of upadacitinib daily during his participation in the clinical trial. When to switch agents in the treatment of patients with severe AD if the response is not adequate, and what agent to switch to, is an issue that is not clearly defined. Data available from the JADE EXTEND study concluded that patients failing to achieve efficacy outcomes with dupilumab can benefit from switching to both doses of abrocitinib (1). However, a number of patients in this study did not achieve efficacy outcomes even after treatment with 200 mg of abrocitinib. Furthermore, sub-population analysis of the JADE EXTEND study, evaluating difficult-to-achieve patient-oriented outcomes such as Patient Oriented Eczema Measure (POEM) ≤2 and Dermatology Life Quality Index (DLQI) ≤1, further emphasized that switching might be beneficial for a significant number of patients, but unmet need was still evident for some of them (4). The literature lacks data on switching between Janus kinase (JAK) inhibitors in AD. Treat-to-target might be different for early control of the disease, as baricitinib and upadacitinib were assessed at 16 weeks, while abrocitinib was assessed at 12 weeks in the pivotal studies. Regarding the present case, the different clinical response obtained cannot be clearly defined since abrocitinib and upadacitinib are both selective JAK1 inhibitors. Consequently, the targeted inflammatory pathways and the expected regulation of immune funct","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 3","pages":"162-164"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140029932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aquatic/aquagenic Dermatoses: The Thin Line Between Pool Palms and Aquagenic Syringeal Acrokeratoderma.","authors":"Deniz Demircioğlu, Emel Öztürk Durmaz","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Pool palms and pool toes are friction or pressure-induced aquatic dermatoses resulting from extensive and repetitive rubbing of fingers, palms, soles, and toes against the rough anti-slippery surfaces or edges of pools. Aquagenic syringeal acrokeratoderma is a sporadic, episodic, and acquired disorder of palmar skin linked to water exposure. Herein we describe a case of aquatic/aquagenic dermatosis that presented clinical and diagnostic difficulties. Differentiating between pool palms and aquagenic syringeal acrokeratoderma is a challenge, and we believe that both disorders lie on a spectrum of watersport dermatoses.</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 3","pages":"140-143"},"PeriodicalIF":0.0,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140029965","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flat Warts (Verrucae Planae) Confined to the Pigment of a Tattoo: A Rare Tattoo-associated Complication.","authors":"Nika Filipović, Davor Tomas, Marija Buljan","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Tattoos are a form of decorative body art in which pigment dyes of different colors are inoculated into the skin. It is estimated that 15-25% of general population has one or more tattoos (1), and the reasons for the popularity of this procedure may include greater social acceptance, aesthetic appeal, or perhaps the option of using laser removal techniques to eliminate unwanted tattoos. Even though modern professional tattoos are usually performed in sterile conditions, complications still occur, and with increasing numbers of people getting tattoos, the incidence of tattoo-associated side-effects presenting to dermatologists, which may be as high as 2%, is likely to increase (2). Herein we present a case of a 43-year-old male patient with multiple HPV-associated flat warts (verrucae planae) confined to the black pigment of a tattoo done 15 years ago. A 43-year-old patient presented to our clinic due to eczema on the trunk. However, during skin examination, we observed asymptomatic verrucous papules confined to the black ink of a tattoo done 15 years ago on the lateral side of his right lower leg (Figure 1a). Clinical examination showed multiple, discrete, skin-colored, verrucous papules disseminated exclusively within the lines of the black-colored tattoo. Full skin examination did not reveal any similar lesions anywhere else on the body. Dermoscopically, papules showed a discretely papillomatous surface and sharp borders (Figure 1b). The patient had another black tattoo on his trunk, in which no similar lesions were found. All his tattoos had been done more than 15 years ago in a professional tattoo salon and with no previous history of cutaneous lesions within tattoos. The patient had no other medical conditions and was not taking any medications. Additionally, no history of warts or other HPV-related lesions of the skin or mucosal membranes could be established. A biopsy of an individual papule was taken and sent for a histopathological analysis, which subsequently showed hyperkeratotic, orthokeratotic, and parakeratotic acanthotic epidermis with hypergranulosis and rare cells with perinuclear halo indicative of koilocytes (Figure 3b). Immunohistochemical analysis showed negative reaction for p16 and p53, while Ki67 was positive only in rare basal and suprabasal cells. These findings were indicative of low-risk HPV, and the diagnosis of HPV-induced verruca plana was ultimately established. The patient was then successfully treated with cautious curettage of the lesions, leaving no scars. Due to the growing popularity of tattoos, especially among younger populations, it is necessary to emphasize the possibility of various tattoo-related side-effects that can still occur due to improper preparation of the tattoo location, contamination of ink products, improperly sterilized instruments, or due to insufficient personal hygiene following tattooing (3). In the past, tattoo-associated infections were significantly more frequent, with the high","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 2","pages":"112-114"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138441947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Insulin Growth Factor-1 Status in Hidradenitis Suppurativa: A French Institutional Pilot Study.","authors":"Perrine Rousseau, Alexandra Poinas, Damien Masson, Kalyane Bach-Ngohou, Michel Nguyen, Marie Le Moigne, Barbara Bregeon, Florence Vrignaud, Amir Khammari, Brigitte Dréno","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Hidradenitis suppurativa (HS) is a chronic inflammatory skin disease of the follicles in the apocrine glands and is associated with a deficiency in the innate immunity of the skin. It is characterized by the occurrence of nodules, abscesses, fistulas, scars.</p><p><strong>Objective: </strong>Although a relationship has already been demonstrated between HS and innate immunity, IGF-1 status in patients with HS is still unknown. The objective of this pilot study was to determine IGF-1 status in patients with HS as well as its potential relationship with the clinical profile of the disease.</p><p><strong>Methods: </strong>This monocentric and cross-sectional study involved 39 patients hospitalized at the Dermatology Department of CHU Nantes between November 2014 and January 2018. Clinical data and IGF1 status were collected during the follow-up consultation.</p><p><strong>Results: </strong>Forty-nine percent of the patients had very low levels of IGF-1. At the clinical level, these patients were young and with a short duration of disease. The major difference was that IGF1-deficient patients had a higher BMI than others. The others factors differing between the two patient groups did not reach statistical significance.</p><p><strong>Conclusion: </strong>This exploratory pilot study indicates that HS with a low level of IGF-1 could represent a specific phenotype of patients with HS. These preliminary results have to be confirmed with a larger cohort, as they could have practical consequences in the therapeutic care of these patients.</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 2","pages":"55-62"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138441950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"PAPA Syndrome: Challenges in Achieving Long-Term Remission.","authors":"Hana Smajlović, Asja Prohić","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>For over two decades, the acronym PAPA syndrome has been used to describe an autoinflammatory condition caused by missense mutations in the PSTPIP1 (proline-serine-threonine phosphatase interacting protein 1) gene and clinically characterized by the presence of pyogenic arthritis, pyoderma gangrenosum (PG), and acne (1,2). Due to the involvement of the PSTPIP1 gene in the regulation of innate immunity, mutations of this gene cause abnormal activation of inflammasomes, complexes of NLRP3/ASC/caspase-1 proteins. As a result, production of interleukin-1β, a key molecule that triggers synthesis of cytokines necessary for the recruitment of neutrophils, is significantly increased (2,3). Additionally, the levels of other pro-inflammatory cytokines, such as tumor necrosis factor-α (TNF-α), interferon-γ (INF-γ) and interleukin 17 (IL-7) are also elevated, which further disrupts inflammatory mechanisms in the microenvironment (4). Since hyperproduction of IL-1 and other involved cytokines is the predominant event in the pathogenesis, these molecules are promising targets in the treatment of PAPA syndrome. Corticosteroids and biologics are currently the most commonly used agents for inducing and hastening remission of symptoms (5). A substantial step forward in the treatment of PAPA syndrome has been the introduction of medications blocking the cytokines crucial in the pathogenesis of this disorder, with TNF-α and IL-1 inhibitors being the most frequent choice of such biological therapy (6). We report the case of a 22-year-old male patient with PAPA syndrome who was referred to our department 18 months ago due to exacerbation of skin changes. Initial presentation and subsequent evolution of disease in this patient matched the typical clinical pattern of PAPA syndrome. The first symptoms occurred at the age of two in the form of unspecific joint disease that was diagnosed as juvenile idiopathic arthritis. Subsequently, in the early adolescence the patient presented with new skin changes manifesting as severe acne and persistent pyoderma gangrenosum-like ulcers. At the same time, severity of joint involvement gradually decreased. After the characteristic phenotype of the disease had fully developed, suspicion of possible syndromic origin of symptoms arose. For this reason, genetic analysis was performed as requested by attending pediatricians at the University Clinical Center in Sarajevo, and E250Q mutation of the PSTPIP1 gene was detected. Thus, the diagnosis of PAPA syndrome was confirmed. Throughout the duration of the disease, several types of medication had been introduced in the treatment with varying success. Earliest joint symptoms were alleviated with non-steroidal anti-inflammatory drugs, while repeated courses of corticosteroids were the mainstay of the therapy during a decade-long period. As a consequence of prolonged steroid therapy, growth disorder, among various other side-effects, had been especially pronounced. Acting as a classic ster","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 2","pages":"106-109"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138441951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Role of T Follicular Helper Cells in Clinical Remission and Relapse in Patients with Pemphigus Treated with Rituximab.","authors":"Ayşe Akman Karakaş, Erkan Ergün, Nurten Sayın Ekinci, Aslı Toylu, Soner Uzun, Erkan Alpsoy","doi":"","DOIUrl":"","url":null,"abstract":"<p><strong>Background: </strong>Pemphigus is a rare chronic autoimmune disease. Recent studies have found that T follicular helper (Tfh) cells may play a role in autoimmune diseases. In this study, Tfh cells frequency, BCL6 gene expression, IL-21, and IL-6 cytokines levels were examined, with the aim of understanding the effect of RTX on these cells in the onset of clinical remission or relapse in patients with pemphigus.</p><p><strong>Methods: </strong>20 patients with pemphigus vulgaris and 20 healthy controls without any autoimmune diseases that were admitted to the Dermatology and Venereology Clinic of the Akdeniz University Hospital were included. Peripheral blood sample was taken from all individuals and studied to analyze Tfh cell distribution, IL-21 and IL-6 distribution in CD3+CD4+CXCR5+ lymphocytes with flow cytometry, plasma IL-21 levels with ELISA, and mRNA levels that refer to BCL6 expression with PCR.</p><p><strong>Results: </strong>Circulating Tfh cell distribution and IL-21 and IL-6 distribution in CD3+CD4+CXCR5+ lymphocytes and mRNA levels that refer to BCL6 expression showed no difference between patient and control groups. However, in patients who had received rituximab treatment there was a significant reduction in Tfh cells compared with other groups. Plasma IL-21 levels were significantly higher in the patient group.</p><p><strong>Conclusions: </strong>We found that plasma concentrations of the cytokine IL-21 were greatly increased in the pemphigus compared with the control group. There were no significant differences in Tfh cell percentages between the patient and control groups. Tfh cells were decreased in patients who received rituximab treatment. Our findings show that the response to RTX in pemphigus causes a reduction in circulating T follicular helper cells, but not in the plasma IL-21 level. Further studies are required to clarify the role of Tfh cells in pemphigus vulgaris.</p>","PeriodicalId":94367,"journal":{"name":"Acta dermatovenerologica Croatica : ADC","volume":"31 2","pages":"72-79"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138441954","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}