Person: ATAGÜNDÜZ, MEHMET PAMİR
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ATAGÜNDÜZ
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MEHMET PAMİR
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Publication Metadata only Validation of ultrasound imaging for Achilles entheseal fibrocartilage in bovines and description of changes in humans with spondyloarthritis(B M J PUBLISHING GROUP, 2010) ÇELİKEL, ÇİĞDEM; Aydin, Sibel Zehra; Bas, Emine; Basci, Onur; Filippucci, Emilio; Wakefield, Richard J.; Celikel, Cigdem; Karahan, Mustafa; Atagunduz, Pamir; Benjamin, Mike; Direskeneli, Haner; McGonagle, DennisBackground Entheseal fibrocartilage (EF) derangement is hypothesised to be pivotal to the pathogenesis of spondyloarthritis. Ultrasound is useful for visualisation of the enthesis but its role in EF visualisation is uncertain. This work aimed to demonstrate face and content validity of ultrasound for EF visualisation both by bovine histological evaluation and EF imaging in spondyloarthritis. Methods Achilles enthesis of 18 bovine hindfeet was visualised using a MyLab 70 ultrasound machine. The presence of tissue with EF characteristics was documented and histological confirmation was performed on five randomly selected sections using Masson trichrome staining. Ultrasound of the Achilles tendon (AT) was performed in 19 patients with spondyloarthritis and 21 healthy controls (HC). Results The bovine EF could be visualised in all cases and seen as a thin, uncompressible, well-defined, anechoic layer between the hyperechoic bone and the hyperechoic fibrils of the enthesis both in longitudinal and transverse scans. This region corresponded to EF on histological examination. The same pattern of low signal corresponding to EF location was seen in 17/19 patients and all HC. Discontinuities of the anechoic layer around the erosions and enthesophytes were observed in the spondyloarthritis group. The thickness of the anechoic layer was not significantly different in spondyloarthritis and HC (0.5 +/- 0.1 vs 0.5 +/- 0.2 mm, p=0.9) whereas the thickness of the EF was greater in men (0.6 +/- 0.2 vs 0.5 +/- 0.1 mm; p=0.009) compared with women. Conclusion Ultrasound can visualise EF of the AT insertion, which can be abnormal in cases of spondyloarthritis. This has implications for a better understanding of enthesopathy.Publication Metadata only The investigation of sacroiliitis with different imaging techniques in spondyloarthropathies(SPRINGER HEIDELBERG, 2005) ATAGÜNDÜZ, MEHMET PAMİR; Inanc, N; Atagunduz, P; Sen, F; Biren, T; Turoglu, H; Direskeneli, HPurpose: The aim of this study was to compare the value of different imaging techniques in spondyloarthropathy (SpA) patients with inflammatory low back pain. Patients and Methods: We evaluated 54 patients who fulfilled the European spondyloarthropathy classification criteria and had inflammatory low back pain. They were subdivided into two groups according to changes on plain radiography rated on a 0-4 scale according to modified New York criteria. Group A patients had at least grade-2 unilateral or bilateral changes in the sacroiliac (SI) joints, whereas group B included patients with radiologic changes not exceeding grade 0-1. Quantitative SI scintigraphy and magnetic resonance imaging (MRI) were performed to investigate the value of these techniques to the diagnosis of sacroiliitis, and the sacroiliac joint:sacrum uptake ratios were calculated. Scintiscanning was done in 80 healthy subjects to define the normal range. Results: The sensitivities of plain radiography, quantitative SI scintigraphy, and MRI were 61%, 55%, and 89%, respectively, among the patients with SpA. MRI and quantitative SI scintigraphy detected sacroiliitis in 97% and 49% of group A, respectively. In group B, these results were 76% and 66%, respectively. Conclusion: Magnetic resonance imaging is the most sensitive method for detecting acute or chronic changes in SpA patients with histories of inflammatory low back pain and normal or indeterminate findings on plain radiographs.Publication Metadata only CARDIOVASCULAR RISK ESTIMATION IN RHEUMATOID ARTHRITIS: WHAT IS MISSING IN TRADITIONAL RISK ESTIMATORS?(BMJ PUBLISHING GROUP, 2014) İNANÇ, GÜZİDE NEVSUN; Ozen, G.; Sunbul, M.; Atagunduz, P.; Direskeneli, H.; Tigen, K.; Inanc, N.Publication Metadata only Predictors and the optimal duration of sustained remission in rheumatoid arthritis(SPRINGER LONDON LTD, 2019) ATAGÜNDÜZ, MEHMET PAMİR; Yilmaz-Oner, Sibel; Gazel, Ummugulsum; Can, Meryem; Atagunduz, Pamir; Direskeneli, Haner; Inanc, NevsunObjective To determine predictors and optimal duration of sustained remission (SR) in patients with rheumatoid arthritis (RA). Methods A total of 428 consecutive patients with RA visiting our clinic routinely between 2012 and 2013 were evaluated. Seventy seven of these patients in DAS28 remission were enrolled and followed up for 62.2 +/- 9.9 months. Patients in remission >= 6 months (SR) and shorter (non: N-SR) were compared in terms of demographic-clinical data and the psychosocial factors. At enrollment, 1st and 5th years, patients in DAS28, SDAI, and Boolean remission were determined. Results Sixty three patients were in SR and 14 in N-SR. Lower baseline DAS28 and HAQ scores, anti-CCP were positive predictors of SR. Although the presence of anxiety, depression, fibromyalgia, and fatigue were lower in the SR group, there was no significance. Patients in DAS28 remission (100%) at baseline reduced to 64% at 1st and 42.6% at 5th years. Patients satisfying SDAI and Boolean remission at these three visits were 49%, 44%, and 32.4% vs 41%, 28%, and 20.6%, respectively. If the duration of remission is defined as 6 months, the remission rates of SDAI at inclusion and fifth years' visits were similar but Boolean remission rates differed significantly and if it is accepted as >= 12 months, both the SDAI and Boolean remission rates were not different. Conclusion Low DAS28 and HAQ scores at baseline, anti-CCP were positive predictors of SR. Instead of 6 months, remission duration for >= 12 months would probably help us to predict SR independently from the chosen criteria; Boolean or SDAI.Publication Metadata only Is the risk of tuberculosis increased in behcet's disease compared to other rheumatological disorders after anti-tnf-a treatment(2019-03-01) GAZEL, ÜMMÜGÜLSÜM; KOCAKAYA, DERYA; KARABACAK, MURAT; ATAGÜNDÜZ, MEHMET PAMİR; ALİBAZ ÖNER, FATMA; DİRESKENELİ, RAFİ HANER; Gazel U., KOCAKAYA D., Topcu I., Karatas H., Karabacak M., ATAGÜNDÜZ M. P. , Inanc N., Alibaz-Oner F., DİRESKENELİ R. H.Publication Open Access Re: Risk of hbv reactivation in hbsag negative and antihbc igg positive patients receiving biologic therapy(2023-03-01) KANİ, HALUK TARIK; KARABACAK, MURAT; CÖMERT ÖZER, ELİF; ABACAR, KEREM YİĞİT; KUTLUĞ AĞAÇKIRAN, SEDA; SEVİK, GİZEM; ALİBAZ ÖNER, FATMA; İNANÇ, GÜZİDE NEVSUN; ATAGÜNDÜZ, MEHMET PAMİR; ÖZEN ALAHDAB, YEŞİM; DİRESKENELİ, RAFİ HANER; ATUĞ, ÖZLEN; Ergenç İ., KANİ H. T., KARABACAK M., CÖMERT ÖZER E., Mehdiyev S., Jafarov F., ABACAR K. Y., KUTLUĞ AĞAÇKIRAN S., SEVİK G., Aslan R., et al.