Person: ONSUN, NAHIDE
9 results
Search Results
Now showing 1 - 9 of 9
Publication Open Access The HLA-Cw12 Allele Is an Important Susceptibility Allele for Psoriasis and Is Associated with Resistant Psoriasis in the Turkish Population(2019-01-01T00:00:00Z) ONSUN, NAHİDE; Pirmit, Serpil; Ozkaya, Dilek; Çelik, Şirin; Rezvani, Aylin; CENGİZ, Fatma Pelin; Kekik, Cigdem; ONSUN, NAHIDE; REZVANİ, AYLİN; CENGİZ, FATMA PELINBackground. Psoriasis is a multifactorial immune-mediated infammatory disease triggered by both genetic and environmental factors. Te strong association between psoriasis and HLA-C∗06 allele has been demonstrated in various races. Te HLAC∗12 allele is closely related to the HLA-C∗06 family of alleles and shares identical sequences. To the best of our knowledge, there is no information about the relationship between HLA-C∗12 and psoriasis in the Turkish population. Te present study aims to determine this relationship. Methods. Tis case control study involved 150 patients with plaque-type psoriasis and 145 age- and gender-matched healthy individuals. Severity of psoriasis was measured using the PASI scores of all patients and joint involvement was investigated with CASPAR criteria. HLA-C alleles were determined with a Tepnel-Lifecodes system. Results. HLA-C∗06, HLA-C∗12, and HLA-C∗04 alleles were most commonly observed in psoriasis patients. HLA-C∗06 and HLA-C∗12 were signifcantly more frequent in the psoriasis group. HLA-C∗06 was 4.11 times more common in psoriasis patients. An increase in PASI (Psoriasis Area Severity Index) scores was compatible with HLA-C∗12 positivity. A need for systemic treatment was highly noticeable in patients with the HLA-C∗12 allele. Conclusions. HLA-C∗12 was found as the second most frequent allele with psoriasis in Turkish population and was associated with severe psoriasis. Our study is limited as we could not investigate other potentially related alleles other than HLA-C alleles and risk factors increasing severity of psoriasis.Publication Open Access Dermoscopic Features of Small, Medium, and Large-Sized Congenital Melanocytic Nevi(2017-02-01) Cengiz, FATMA PELİN; Emiroglu, NAZAN; OZKAYA, Dilek Biyik; Onsun, NAHİDE; CENGİZ, FATMA PELIN; EMİROĞLU, NAZAN; SU KÜÇÜK, ÖZLEM; ONSUN, NAHIDEBackground: Congenital melanocytic nevi (CMN) are present at birth. It is well known that the presence of large-sized congenital nevus in early life could predict a major risk of developing melanoma. Objective: To investigate the clinical and dermoscopic features of the CMN, to search for and highlight any differences between small-sized, medium-sized, large-sized CMN. Methods: A nonrandomized observational study was performed. A total of 108 melanocytic nevi were analysed by clinical and dermoscopic examination. Results: Of the subjects, 57.4% were aged less than 16 years, 42.6% were aged 16 and more. Of the nevi, 26 had reticular pattern (24.1%), 35 had globular pattern (32.4%), 13 had reticular-globular pattern (12.0%), 16 had homogeneous pattern (14.8%), 6 had reticular-homogeneous pattern (5.6%), 2 had globular-homogeneous pattern (1.9%), 7 had cobblestone pattern (6.5%), 3 had reticular patchy pattern (2.8%). Atypical dots and globules, focal hypopigmentation and perifollicular hypopigmentation are the most common dermoscopic features of CMN. The rarest dermoscopic feature is the blue-whitish veil. Conclusion: Most of the dermoscopic features related with dysplastic nevi up to the present, such as atypical dots and globules, focal hypopigmentation, perifollicular hypopigmentation were observed in CMN, in our study. Congenital nevus and dysplastic nevi may share the same dermoscopic features, therefore it is important to know it is found at birth or not.Publication Open Access Frequency and risk factors for secondary malignancies in patients with mycosis fungoides(2016-08-01) EMIROGLU, NAZAN; CENGIZ, F. P.; BAHALI, A. Gulsel; Su, O.; ONSUN, NAHİDE; CENGİZ, FATMA PELIN; EMİROĞLU, NAZAN; SU KÜÇÜK, ÖZLEM; ONSUN, NAHIDEMycosis fungoides (MF), the most common form of cutaneous T-cell lymphoma (CTCL), has an incidence of 6.4 per million people [1]. Patients with CTCL have an increased risk of the development of secondary malignancies, particularly lymphomas [2,3]. We conducted a 20-year population-based cohort study to assess the risk factors of secondary cancers in MF patients from our center.Publication Open Access Dermatoscopic findings of pigmented purpuric dermatosis(2016-09-01) Su, Ozlem; OZKAYA, Dilek Biyik; Emiroglu, NAZAN; Cengiz, FATMA PELİN; Bahali, ANIL GÜLSEL; Yildiz, PELİN; DEMIRKESEN, Cuyan; Onsun, NAHİDE; EMİROĞLU, NAZAN; SU KÜÇÜK, ÖZLEM; CENGİZ, FATMA PELIN; BAHALI, ANIL GÜLSEL; YILDIZ, PELİN; ONSUN, NAHIDEackground:: Pigmented purpuric dermatosis is a chronic skin disorder of unknown aetiology characterised by symmetrical petechial and pigmented macules, often confined to the lower limbs. The aetiology of pigmented purpuric dermatosis is unknown. Dermatoscopy is a non-invasive diagnostic technique that allows the visualisation of morphological features invisible to the naked eye; it combines a method that renders the corneal layer of the skin translucent with an optical system that magnifies the image projected onto the retina. Objectives:: The aim of this study is to investigate the dermatoscopic findings of pigmented purpuric dermatosis. Methods:: This study enrolled patients diagnosed histopathologically with pigmented purpuric dermatosis who had dermatoscopic records. We reviewed the dermatoscopic images of PPD patients who attended the outpatient clinic in the Istanbul Dermatovenereology Department at the Bezmialem Vakıf University Medical Faculty. Results:: Dermatoscopy showed: coppery-red pigmentation (97%, n = 31) in the background, a brown network (34%, n = 11), linear vessels (22%, n = 7), round to oval red dots, globules, and patches (69%, n = 22; 75%, n = 24; 34%, n = 11; respectively), brown globules (26%, n = 8) and dots (53%, n = 17), linear brown lines (22%, n = 7), and follicular openings (13%, n = 4). Conclusion:: To our knowledge, this is the first study to report the dermatoscopy of pigmented purpuric dermatosis. In our opinion, dermatoscopy can be useful in the diagnosis of pigmented purpuric dermatosis.Publication Open Access Which dermatology patients attend to Dermatology Outpatient Clinics during the SARS-CoV-2 outbreak in Turkey and what happened to them?(2020-05-11T04:00:00Z) CENGİZ, Fatma Pelin; EMİROĞLU, Nazan; BAHALI, ANIL GÜLSEL; DİZMAN, DİDEM; TAŞLIDERE, NAZAN; MERT, Ömer; Akarslan, Tahsin Cagdas; Gunes, Begum; KÜÇÜK, Özlem Su; ONSUN, Nahide; CENGİZ, FATMA PELIN; EMİROĞLU, NAZAN; BAHALI, ANIL GÜLSEL; DİZMAN, DİDEM; TAŞLIDERE, NAZAN; GÜNEŞ, BEGÜM; MERT, ÖMER; SU KÜÇÜK, ÖZLEM; ONSUN, NAHIDECoronavirus disease, first emerged in Wuhan, rapidly spread all over the world since December 2019. There are concerns about elective dermatology appointments and its results. Herein, we aimed to find out which type of dermatologic patients attended to dermatology outpatient clinic. The patients visiting the clinics for elective dermatologic diseases between March 11 and 18, 2020, were included in this study. Their age, sex, diagnosis of disease, requirement for emergent intervention, and their medical records about COVID-19 were obtained. There were 390 patients attending to the dermatology outpatient clinic in this period. The most common disease was acne (N: 94, 24%), only 19% of patients need emergent interventions or dose adjustment. There were 40 (10%) patients over the age of 65. After their visits, five patients were diagnosed as COVID-19 in 2weeks. Dermatologic examinations may be a vector for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) transmission since being closed to the patient. Five of our patients were diagnosed as COVID-19 after their elective visit to hospital. Since the asymptomatic course of some young patients, most of our patients were not screened for COVID-19. Our findings support the concerns of elective physician examinations.Publication Open Access Acne located on the trunk, whey protein supplementation: Is there any association?(2017-03-05) CENGIZ, FATMA PELİN; Cevirgen, Cemil; EMIROGLU, NAZAN; Gulsel, Bahali; ONSUN, NAHİDE; CENGİZ, FATMA PELIN; EMİROĞLU, NAZAN; BAHALI, ANIL GÜLSEL; ONSUN, NAHIDEWhey protein is a source of protein that was isolated from milk. Whey proteins are composed of higher levels of essential amino acids. The role of diet in acne etiology has been investigated for several years. It was established that milk and milk products can trigger acneiform lesions, and recent evidence supports the role of whey protein supplements in acne. Herein, we report 6 healthy male adolescent patients developing acne located only to the trunk after the consumption of whey protein supplements for faster bodybuilding. This is the first observation which specified the location of acneiform lesions among bodybuilders. In our opinion, a trendy and common health problem is beginning among adolescents in the gyms.Publication Open Access Evaluation of mean platelet volume in localized scleroderma(2017-09-01) Bahali, ANIL GÜLSEL; Su, Ozlem; Emiroglu, NAZAN; Cengiz, FATMA PELİN; Kaya, MEHMET ONUR; Onsun, NAHİDE; BAHALI, ANIL GÜLSEL; SU KÜÇÜK, ÖZLEM; EMİROĞLU, NAZAN; CENGİZ, FATMA PELIN; KAYA, MEHMET ONUR; ONSUN, NAHIDEAbstract: Background: Localized scleroderma is a chronic inflammatory skin disease characterized by sclerosis of the dermis and subcutaneous tissue. Platelets play an important role in inflammation. Following activation, platelets rapidly release numerous mediators and cytokines, which contribute to inflammation. Objectives: To evaluate whether there was any relation between localized scleroderma and platelet parameters. Methods: Forty-one patients with localized scleroderma were enrolled in the study. The control group consisted of 30 healthy subjects. Results: The mean platelet volume level in the patient group was 9.9 ± 1.3 fl and in the control group was 7.6 ± 1.1 fl. This difference was statistically significant (p< 0.001). The plateletcrit values are minimally higher in the patient group as compared to the control group. It was statistically significant (p<0.001). There was no significant difference in the platelet counts between the two groups (p= 0.560) In the patient group, there was no significant relation between the mean platelet volume levels and clinical signs of disease (p=0.09). However, plateletcrit values are higher in generalized than localized forms of disease (p=0.01). Study Limitations: The limited number of patients and the retrospective nature of the study were our limitations. Conclusions: This study suggests that platelets might play a role in the pathogenesis of scleroderma. Platelet parameters may be used as markers for evaluating disease severity and inflammatory processes. Thus, there is a need for more detailed and prospective studies. Keywords: Blood platelets; Scleroderma, localized; Transforming growth factor betaPublication Metadata only Dermoscopic Evolution of Pediatric Nevi(2019-10-01T00:00:00Z) CENGİZ, Fatma Pelin; Yilmaz, Yaren; EMİROĞLU, Nazan; ONSUN, NAHİDE; CENGİZ, FATMA PELIN; EMİROĞLU, NAZAN; ONSUN, NAHIDEBackground: The incidence of pediatric melanoma is very rare. Dermoscopic features help to distinguish pediatric melanoma and common nevi. Objective: To study the evolution of dermoscopic findings in benign nevi in childhood through serial observation and photography. Methods: We examined 504 melanocytic lesions in 100 patients. From each participant, dermoscopic images of the nevi from 4-year dermoscopic follow-up were obtained, including randomly selected nevi. Results: The most common dermoscopic patterns were homogeneous (193 nevi; 38.3%), globular (92 nevi; 18.3%), and reticular (86 nevi; 17.1%). Dermoscopic pattern changes were detected in 27% of patients aged 2 similar to 10 years and in 20% of patients aged 11 similar to 16 years. The main pattern changes consisted of the transition from homogeneous to globular-homogeneous (16%), from homogeneous to reticular-homogeneous (12%) and from globular to globular-homogeneous (10%). Although 257 of the 504 nevi (51.0%) have stable duration without size changes, 169 of the 504 nevi (33.5%) were enlarged, and 78 of the 504 nevi (15.5%) had become smaller. Conclusion: These results contrast with the prevailing view that dermoscopic patterns in pediatric nevi are usually characterized by globular patterns and that melanocytic nevi generally undergo a characteristic transition from a globular pattern to a reticular pattern. Fifty one percent of patients did not exhibit a size change. While 33% of patients had symmetrical enlargement, 15% of patients had involution. Therefore, enlargement is a common dermoscopic change in pediatric nevi, and is not a specific sign of pediatric melanoma.Publication Open Access Prognostic factors of patients with mycosis fungoides(2020-01-01T00:00:00Z) BAHALI, ANIL GÜLSEL; Su, Özlem Su; CENGİZ, Fatma Pelin; EMİROĞLU, Nazan; Ozkaya, Dilek Biyik; ONSUN, Nahide; BAHALI, ANIL GÜLSEL; SU KÜÇÜK, ÖZLEM; CENGİZ, FATMA PELIN; EMİROĞLU, NAZAN; ONSUN, NAHIDEIntroduction: Mycosis fungoides (MF) is the most common type of primary cutaneous T-cell lymphoma. Prognostic factors may help to evaluate the course of the disease and may also be useful in selecting appropriate treatment plans for patients.