Person: ÖZGEN, ZÜLEYHA
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ÖZGEN
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ZÜLEYHA
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Publication Open Access Effect of Dental Follicle Mesenchymal Stem Cells on Th1 and Th2 Derived Naive T Cells in Atopic Dermatitis Patients(MARMARA UNIV, INST HEALTH SCIENCES, 2019-08-31) GÖKER, MEHMET KAMİL; Zibandeh, Noushin; Genc, Deniz; Ozgen, Zuleyha; Duran, Yazgul; Kasap, Nurhan; Goker, Kamil; Baris, Safa; Ergun, Tulin; Akkoc, TuncObjective: The purpose of our study is to investigate the immunomodulatory effects of Dental Follicle Mesenchymal Stem Cells (DF-MSCs) on lymphocytes isolated from peripheral blood of Atopic Dermatitis (AD) patients, a Th2 disease and psoriasis, a Th1 / Th17 disease and compare them with healthy individuals in vitro. Methods: Patients with the AD (n = 9) and psoriasis (n = 6) who are followed up in Marmara University Pediatric Allergy and Immunology and Dermatology outpatient clinics and healthy subjects (n = 6) were included. Peripheral Blood Mononuclear Cells (PBMCs) were isolated from 20 ml of venous blood of all participants. Cells were cultured for 72 hours in the absence and presence of DF-MSCs with anti-CD3/anti-CD28 stimulation or without stimulation. At the end of this period, CD4+ and CD8+ T lymphocyte proliferation and cytokine levels from the culture supernatants were analyzed by flow cytometry. Results: In the presence of DF-MSCs, proliferation ratio was suppressed in both CD4+ and CD8+ cells in AD and psoriasis patients (p<0,05). IFN-gamma levels significantly increased in AD patients in the presence of DF-MSCs (p<0,05) whereas decreased significantly in psoriasis patients in the presence of DF-MSCs (p<0,05). IL-4 levels significantly decreased in AD patients in the presence of DF-MSCs (p<0,05) but remained unchanged in psoriasis patients (p>0,05). IL-10 increased significantly in both groups in the presence of DF-MSCs (p<0,05). Conclusion: Our results support immunoregulatory effects of DF-MSCs on both AD and psoriasis which are Th2 and Th1 / Th17 dominant diseases respectively. Our evidence-based results demonstrated that DF-MSCs could have a beneficial therapeutic implication for inflammatory skin diseases.Publication Metadata only Rituximab therapy in pediatric pemphigus patients: A retrospective analysis of five Turkish patients and review of the literature(WILEY, 2019) ÖZGEN, ZÜLEYHA; Bilgic-Temel, Asli; Ozgen, Zueleyha; Harman, Mehmet; Kapicioglu, Yelda; Uzun, SonerBackground/Objectives There is inadequate knowledge regarding rituximab (RTX) administration in autoimmune bullous diseases (AIBDs), disease prevalence, clinical characteristics, and treatment outcomes within pediatric populations due to the rarity of AIBDs affecting the pediatric age group. The aim of this retrospective analysis was to evaluate the effectiveness, safety of RTX, and treatment outcomes in Turkish pediatric patients with pemphigus vulgaris (PV) and to review the literature. Methods Five patients under 18 years of age and diagnosed with PV received RTX treatment and were identified in four dermatology departments of Turkey. Results The mean age of the patients at the time of RTX therapy initiation was 15 years (range: 11-17 years), and the total duration of follow-up after RTX therapy was 42.6 months (range: 19-60 months). All patients showed a clinical response. At the last visit, complete remission off therapy was achieved in three patients. The remaining two patients achieved partial remission off therapy. No adverse events were observed. Conclusions This retrospective case series of five pediatric patients showed that RTX treatment can be effective and safe for the treatment of recalcitrant PV in pediatric patients. With increasing evidence, RTX is a good treatment choice in adults and pediatric patients with pemphigus.Publication Metadata only The risk of tuberculosis in patients with psoriasis treated with anti-tumor necrosis factor agents(WILEY-BLACKWELL, 2015) SEÇKİN GENÇOSMANOĞLU, DİLEK; Ergun, Tulin; Seckin, Dilek; Bulbul, Emel Baskan; Onsun, Nahide; Ozgen, Zuleyha; Unalan, Pemra; Alpsoy, Erkan; Karakurt, SaitBackgroundTumor necrosis factor-alpha (TNF-) antagonist treatment is associated with 1.6 to 27 times higher risk of tuberculosis (TB). ObjectiveTo find TB incidence of psoriasis patients treated with TNF- antagonists and define risk factors related with this condition in a country with moderately high risk of TB. MethodsThree hundred seventy psoriasis patients treated by anti-TNF agents in four referral centers were included. The data on the characteristics of the patients, TB history, tuberculosis skin test results, anti-TNF agent type and exposure time, localization of TB, and isoniazide prophylaxis state were analyzed. ResultsFour patients (1.08%) developed TB, three pulmonary and one gastrointestinal, 2-23months after initiating anti-TNF agents. Other than the patient with gastrointestinal TB, who was using methotrexate and corticosteroid concomitantly, none had contributing risk factors for TB. Two patients developed pulmonary TB in spite of chemoprophylaxis. Three patients with pulmonary TB completely recovered following antiTB treatment whereas patients with gastroinrestinal TB developed renal failure. LimitationsThe major limitation of the study is the lack of a diseased control group, which enables us to compare the risk of psoriatics with that of patients having other inflammatory diseases. ConclusionTuberculosis is a rare but a severe complication of anti-TNF treatment and may develop in spite of chemoprophylaxis. The risk of TB in psoriasis patients in the present study is comparable to literature mostly based on rheumatology patients.