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    A case of granulomatosis with polyangiitis and pyoderma gangrenosum successfully treated with infliximab and rituximab
    (Wiley, 2014) Donmez, Salim; Pamuk, Omer N.; Gedik, Mustafa; Ak, Recep; Bulut, Gulay
    Here, we present a young male patient who was admitted with alveolar hemorrhage, arthritis and cutaneous lesions, who later developed bilateral orbital involvement and pyoderma gangrenosum (PG). He also had pathergy test positivity. The patient was refractory to conventional immunosuppressive therapy. Therefore, multiple devastating PG lesions and disease activity in granulomatosis with polyangiitis (GPA) were controlled with infliximab. Later, rituximab was used with success to prevent recurrence of symptoms. The relationship of PG with various autoimmune diseases is known; however, PG in GPA has been only rarely reported. Biologic agents might prove to be effective in GPA and PG patients who are refractory to standard immunosuppressive therapy.
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    Diagnostic dilemma of paraneoplastic arthritis: case series
    (Wiley-Blackwell, 2014) Kisacik, Bunyamin; Onat, Ahmet M.; Kasifoglu, Timucin; Pehlivan, Yavuz; Pamuk, Omer N.; Dalkilic, Ediz; Donmez, Salim
    Objectives: Paraneoplastic arthritis (PA) may mimic rheumatic diseases. While presenting the demographic and laboratory features of the patients diagnosed with PA, this study also aims to provide possible appropriate tools to differentiate the PA cases from early rheumatoid arthritis (ERA). Methods: Sixty-five patients with PA (male/female: 43/22) from 15 different rheumatology clinics and 50 consecutive patients with ERA (male/female: 13/37) fulfilling the 2010 American College of Rheumatology (ACR) criteria for the diagnosis if the RA from Gaziantep Rheumatology Early Arthritis Trial (GREAT) as controls who were diagnosed at least 12 months before, were enrolled into study. Results: Mean ages of the patients with PA and ERA were 50.2 +/- 15.3, and 42.7 +/- 12.3, respectively, and the mean ages of the patients with PA were significantly higher than the ERA. Unlike the ERA patients, in our case series PA was predominantly observed among males. Oligoarthritis was significantly higher in solid tumors in contrast to ERA (P = 0.001). Polyarthritis and symmetric arthritis were significantly higher in the ERA group in contrast to all malignancies (P = 0.001). Rheumatoid factor (RF) and anticyclic citrullinated peptide antibody (anti-CCP) positivity were significantly higher in the ERA group (each P = 0.001). Lactic dehydrogenase levels of hematologic malignancies were significantly higher than other groups (each, P = 0.001). Conclusions: ERA patients had more symmetric joint involvement than PA; laboratory markers could be also an alternative where there is high RF and anti-CCP positivity with antibody levels among the ERA patients. Finally, the demographic features can be used as differentiating
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    Effectiveness of Thoracic Ultrasonography in the Evaluation of the Severity of Pulmonary Involvement in Patients With Systemic Sclerosis
    (Turkish League Against Rheumatism, 2016) Cakir Edis, Ebru; Hatipoglu, Osman N.; Pamuk, Omer N.; Mutlucan Eraslan, Renginar; Aktoz, Meryem; Tuncel, Sedat Alpaslan
    Objectives: This study aims to investigate the effectiveness of thoracic ultrasonography (USG) in a single session in the evaluation of the severity of pulmonary involvement in systemic sclerosis. Patients and methods: A total of 48 consecutive systemic sclerosis patients (2 males, 46 females; mean age 50.8 +/- 11.9 years; range 21 to 76 years) followed-up in our center were included. A thoracic USG using a linear probe was performed for each patient to evaluate the parenchymal involvement by two pulmonary disease specialists. The number of B-lines (B-lines described USG sign of interstitial lung fibrosis) was recorded. Systolic pulmonary artery pressure was measured by means of using a phase probe to evaluate pulmonary hypertension in the same sequence. The same day, pulmonary function tests were conducted. Warrick score was calculated according high resolution computed tomography (HRCT) images which were evaluated independently from each other by a radiologist and a pulmonary disease specialist. Medsger severity scale was calculated for each patient according to the results of HRCT findings, pulmonary function test, and systolic pulmonary artery pressure. Results: The number of B-lines detected on thoracic USG was correlated with the Warrick score (r=0.89; p=0.0001) and Medsger disease scale (r=0.55; p=0.0001) and negatively correlated with diffusing capacity of carbon monoxide (r=-0.56; p=0.0001) and forced vital capacity (r=-0.46; p=0.001). When HRCT was accepted as the gold standard; the sensitivity, specificity, positive predicted value, and negative predicted value for thoracic USG were 100%, 84.2%, 90.6%, and 100%, respectively. If thoracic USG was used instead of HRCT for the evaluation of Medsger scale, the results changed in only one of the 48 patients. Conclusion: Thoracic USG showed good correlation with HRCT findings for the evaluation of pulmonary parenchymal involvement in systemic sclerosis. Therefore, USG might be a noninvasive and useful tool for the long-term follow-up of systemic sclerosis patients after initial examination with USG and HRCT.
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    Higher interleukin 21 level is predictive of relapse in immune thrombocytopenia. Is it associated with activation of the complement system?
    (Wiley-Blackwell, 2016) Sahip, Birsen; Pamuk, Gulsum E.; Uyanik, Mehmet S.; Pamuk, Omer N.
    [Abstract Not Available]
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    Increased frequency of restless leg syndrome in patients with ankylosing spondylitis
    (Wiley, 2015) Tekatas, Aslan; Pamuk, Omer N.
    ObjectiveTo assess the prevalence of restless leg syndrome (RLS) in patients with ankylosing spondylitis (AS) and to investigate factors potentially associated with RLS. MethodsOne hundred and thirty patients diagnosed with AS according to modified New York criteria and 91 age- and sex-matched healthy control subjects were included in this study. The diagnosis of RLS was made according to the criteria of the International RLS Study Group. The factors associated with RLS were evaluated. Electrophysiological procedures were performed in a group of patients with RLS. ResultsRLS was significantly more common in patients with AS (30.8%) than in healthy controls (13.2%). When AS patients with RLS were compared with AS patients without RLS, it was seen that peripheral arthritis, uveitis, anemia, smoking and polyneuropathy were significantly higher in the former group. ConclusionRLS is common in patients with AS and iron deficiency, smoking and small fiber neuropathy seem to be possible causes.
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    Spleen tyrosine kinase inhibition in the treatment of autoimmune, allergic and autoinflammatory diseases
    (Bmc, 2010) Pamuk, Omer N.; Tsokos, George C.
    Spleen tyrosine kinase (Syk) is involved in the development of the adaptive immune system and has been recognized as being important in the function of additional cell types, including platelets, phagocytes, fibroblasts, and osteoclasts, and in the generation of the inflammasome. Preclinical studies presented compelling evidence that Syk inhibition may have therapeutic value in the treatment of rheumatoid arthritis and other forms of arthritis, systemic lupus erythematosus, autoimmune cytopenias, and allergic and autoinflammatory diseases. In addition, Syk inhibition may have a place in limiting tissue injury associated with organ transplant and revascularization procedures. Clinical trials have documented exciting success in the treatment of patients with rheumatoid arthritis, autoimmune cytopenias, and allergic rhinitis. While the extent and severity of side effects appear to be limited so far, larger studies will unravel the risk involved with the clinical benefit.