Peripheral blood mononuclear cell microchimerism in Turkish female patients with systemic sclerosis
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ORIGINAL ARTICLE
Peripheral blood mononuclear cell microchimerism in Turkish female patients with systemic sclerosis ¨ zkan • Nuran Tu¨rkc¸apar • Orhan Ku¨c¸u¨ks¸ ahin • Ali S¸ ahin • Tu¨lin O ¨ zturk • S¸ u¨kran Erten • Asuman Sungurog˘lu Elif Berna Ko¨ksoy • Gu¨ls¸ ah O Murat Turgay • Gu¨lay Kınıklı
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Received: 7 December 2012 / Accepted: 15 February 2013 Ó Japan College of Rheumatology 2013
Abstract Objectives To investigate microchimerism (Mc) in peripheral blood mononuclear cells (PBMC) taken from female patients with systemic sclerosis (SSc) and healthy females. We also intended to research the association between Mc and the clinical subsets. Methods This study included 50 females with lcSSc, 30 females with dcSSc and 40 healthy females. The Y-chromosome sequences were studied by RT-PCR in DNA obtained from PBMC. Results Mc was found in 28 (35 %) patients and 8 (20 %) healthy controls as well as in 6 dcSSc patients with son(s) (27.3 %), 10 lcSSc patients with son(s) (32.3 %) and 7 control females with son(s) (18.9 %) (p [ 0.05). Mc was detected in 6 nulliparous lcSSc patients (31.6 %) and in 1 nulliparous dcSSc patient (11.1 %) (p [ 0.05). The mean time elapsed between the first pregnancy and the diagnosis of SSc was 3.5 (0–49) years in the Mc-positive patients and 14 (0–55) years in the negative patients (p = 0.020). The mean A. S¸ ahin (&) Division of Rheumatology, Sanliurfa Education and Research Hospital, 63100 Sanliurfa, Turkey e-mail: [email protected] ¨ zkan G. O ¨ zturk A. Sungurog˘lu T. O Department of Medical Biology, Ibni Sina Hospital, Ankara University School of Medicine, Ankara, Turkey N. Tu¨rkc¸apar O. Ku¨c¸u¨ks¸ ahin E. B. Ko¨ksoy M. Turgay G. Kınıklı Department of Internal Medicine, Rheumatology, Ibni Sina Hospital, Ankara University School of Medicine, Ankara, Turkey S¸ . Erten Division of Rheumatology, Atatu¨rk Education and Research Hospital, Ankara, Turkey
modified Rodnan skin scores (ModRSS) of the patients with and without Mc was 10 (4–24) and 13 (4–26), respectively (p = 0.038). The relationship between Mc and the system involvement, disease severity, autoantibody profile, number of children and age of children was not found. Conclusions Various etiological factors rather than just one play a role in the development of scleroderma. Mc is thought to be one factor that shortens the elapsed time of disease development in SSc. Mc is inversely related to the ModRSS, and no association was detected between Mc and autoantibodies or the clinical subsets. Keywords Female Lymphocyte Microchimerism Systemic sclerosis Turkish
Introduction Systemic sclerosis (SSc) is an autoimmune disease that involves the skin, lung, heart, kidney and gastrointestinal system. The etiology of the disease, however, remains unknown. Microvascular changes, excessive extracellular matrix production and immune system dysregulation are responsible for SSc pathogenesis [1]. Fibrosis in the internal organs and skin triggered by complex interactions in the autoimmune system accounts for the cli
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