Amaç: Kronik miyeloproliferatif hastalıklar (MPN), süreğen bir inflamasyonla birlikte seyreder. Bu süreğen inflamasyon, akut miyeloid lösemiye ilerleme, ikincil maligniteler, tromboemboli ve ikincil inflamatuar hastalıkların gelişimi açısından bir risk faktörü oluşturur. Bu çalışmada, polistemia vera (PV) ve esansiyel trombositoz (ET) tanılı hastalarımızda inflamatuar mediyatörlerin düzeylerini araştırmayı amaçladık. Gereç ve Yöntemler: Çalışmaya 30 PV ve 30 ET hastası, 28 sağlıklı kontrol grubu alındı. Her 3 gruptan TNF, VEGF, FGF, PNTX, CRP, yaş, hemoglobin düzeyi, lökosit ve trombosit sayısı, ET tanılı hastaların CALR, JAK-2, MPL mutasyonu verileri kaydedildi. Veriler istatistiksel yöntemlerle değerlendirildi. Bulgular: PV, ET ve kontrol grubundaki hastaların yaş ortalamaları sırasıyla 63,5, 54,2, 62,7 bulundu. PV hastalarının kontrol grubuna göre CRP değerleri arasında istatistiksel anlamlı farklılık saptanmadı. PV ve ET gruplarının kontrol grubuna göre TNF, FGF, PNTX değerlerinde anlamlı farklılık yoktu. PV grubunun kontrol grubuna göre VEGF değerlerindeki artış istatistiksel olarak anlamlı değildi. Ancak, ET grubunda bu artış anlamlı bulundu (p=0,008). ET grubunda 5 hastada CALR, 15 hastada JAK-2 mutasyonu pozitifti. Hiç MPL mutasyonu saptanmadı. 8 hasta ise üçlü negatif bulundu. CALR, JAK-2 pozitif ve üçlü negatif hastaların TNF, VEGF, FGF, PNTX değerleri arasında istatistiksel anlamlı farklılık yoktu. JAK-2 pozitif saptanan hastaların allel yükü ile CRP değerleri arasında istatistiksel anlamlılık saptandı (p=0,005). Ancak TNF, VEGF, FGF ve PNTX ile istatistiksel anlamlı bir fark yoktu. Sonuç: Süreğen inflamasyon, MPN patogenezi ve klinik seyrinde önemli bir rol oynamaktadır. İnflamatuar mediyatölerlerin MPN'deki rolünün daha net anlaşılabilmesi için daha geniş serilerle randomize kontrollü çalışmalara ihtiyaç vardır.
Anahtar Kelimeler: Esansiyel trombositoz; polistemia vera; inflamasyon
Objective: Chronic myeloproliferative neoplasms (MPN) are associated with chronic inflammation. This chronic inflammation is a risk factor for progression of acute myeloid leukemia, secondary malignancies, thromboembolism and the development of secondary inflammatory diseases. We aimed to investigate the levels of inflammatory mediators in patients with polistemia vera (PV) and essential thrombocytosis (ET). Material and Methods: Thirty patients with PV and 30 ET and 28 healthy controls were included in study. TNF, VEGF, FGF, PNTX, CRP, age, hemoglobin level, leukocyte and platelet count, CALR, JAK-2, MPL mutation of patients with ET were recorded. Data were evaluated by statistical methods. Results: The mean age of the patients in the PV, ET and control groups was 63.5, 54.2, 62.7, respectively. There was no statistically significant difference between the CRP values of the PV patients according to the control group. There was no significant difference in the TNF, FGF and PNTX values of the PV and ET groups compared to the control group. The increase in VEGF values of the PV group compared to the control group was not statistically significant. However, this increase was significant in the ET group (p=0.008). CALR in 5 patients and JAK-2 mutation in 15 patients were positive in the ET group. No MPL mutations were detected. 8 patients were found to be triple negative. There was no statistically significant difference between the TNF, VEGF, FGF, PNTX values of CALR, JAK-2 positive and triple negative patients. A statistically significant difference was found between allele load and CRP values of patients with JAK-2 positive (p=0.005). However, there was no statistically significant difference between TNF, VEGF, FGF and PNTX. Conclusion: Chronic inflammation -lays an important role in the pathogenesis and clinical course of MPN. Randomized controlled trials with larger series are needed to better understand the role of inflammatory mediators in MPN.
Keywords: Essential thrombocytosis; polycythemia vera; ınflammation
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