In MM, plasma apelin level was significantly higher than in NHL and control groups. Apelin could be playing a role in MM pathogenesis; and apelin level could be used as a diagnostic and prognostic biomarker in MM.

Objectives: This study aims to evaluate the mean platelet volume (MPV) and neutrophil-lymphocyte ratio (NLR) in gouty arthritis (GA) and rheumatoid arthritis (RA) patients, as well as their relationship with atherosclerotic cardiovascular mortality (ACVM). Patients and methods: The study included 122 GA patients (96 males, 26 females; mean age 64.6±13.4 years; range 34 to 82 years), 82 RA patients (40 males, 42 females; mean age 62.1±12.1 years; range 29 to 83 years), and 61 healthy controls (34 males, 27 females; mean age 65.3±4.8 years; range 33 to 80 years). Clinical and ACVM data were obtained from medical charts. Erythrocyte sedimentation rate, C-reactive protein, MPV, and NLR were recorded at the time of diagnosis and one month after therapy. Results: Mean platelet volume in GA (8.49±1.5) and RA (7.98±0.99) groups were significantly lower than in healthy controls (9.8±15) (p<0.001). NLR in healthy controls (1.9±0.74) was significantly lower than in GA (3.6±2.3) and RA (3.7±2.5) groups (p<0.001). After treatment, MPV did not change significantly in GA and RA groups (p values >0.05); however, NLR decreased in both groups (p<0.001). Nine GA and 12 RA patients died from ACVM during follow-up. GA patients with ACVM were older and had more frequent hypertension, higher MPV, and higher intercritical CRP level. In multivariate analysis, MPV was an independent poor prognostic factor for ACVM in GA patients. Conclusion: Gouty arthritis and RA patients had significantly lower MPV and significantly higher NLR than controls. MPV might be used as a potential biomarker for the development of ACVM in GA.

The most common genetic disorder in Philadelphia negative chronic myeloproliferative neoplasms is the JAK2-V617F mutation. In the present study, we aimed to determine risk factors for thrombosis in patients with essential thrombocytosis and polycythemia vera. We screened the medical records of 101 patients. Risk factors which may predict thrombosis were recorded. Venous thrombosis (VT) before diagnosis was significantly higher in JAK2 positive patients. VT after diagnosis was similar in JAK2 positive and negative groups, and was significantly higher in elderly patients. Treatment places importance on the JAK2 mutation under unmodifiable cardiovascular risk factors such as advanced age after diagnosis.

Aims We determined plasma levels of dickkopf-1 (DKK-1) and osteopontin (OPN) which have roles in the Wnt pathway in chronic lymphocytic leukemia (CLL) and non-Hodgkin lymphoma (NHL) patients and in healthy controls. We also tested whether DKK-1 and OPN levels could be of clinical or prognostic significance in CLL and NHL. Methods We included 36 CLL, 24 NHL patients, and 21 healthy controls. Patients' clinical and demographic features, treatment modalities, and response to treatment were recorded. DKK-1 and OPN levels in plasma obtained at initial diagnosis were determined with enzyme-linked immunosorbent assay. Results CLL patients had significantly lower DKK-1 levels than NHL and control groups (P levels, respectively, 0.048 and 0.017). OPN level was significantly higher in NHL group than in CLL and control groups (P values, 0.017 and <0.001). CLL patients with early and late Rai stages of disease had similar DKK-1 and OPN levels. After a median follow-up of 48 months, 13 CLL patients died. Univariate analysis showed that advanced Rai stages and older age were significantly poor prognostic factors. DKK-1 level in CLL patients who have died was significantly lower than those who were alive (P = 0.035). NHL patients with extranodal involvement had significantly higher OPN levels than those with no involvement (P = 0.04). Conclusions Our results demonstrated that the Wnt pathway inhibitor DKK-1 was decreased in CLL. OPN was increased in NHL and associated with extranodal involvement. In order to reveal the pathogenic and clinical roles of DKK-1 and OPN in CLL and NHL, larger studies need to be conducted.

Molecular balance between Angiopoietin-1 (Ang-1) and Angiopoietin-2 (Ang-2) has important effects in tumor angiogenesis. Ang-2 was shown to be elevated and proved to be a prognostic factor in acute myeloid leukemia (AML). To date studies revealed increased angiogenesis in bone marrows (BMs) of both myeloproliferative neoplasm (MPN) and AML patients. We conducted this study to demonstrate circulating levels of Ang-1 and Ang-2 in MPN patients since no data exists in literature. Thirty-three newly diagnosed MPN, 27 newly diagnosed AML patients and 25 controls (HC) were enrolled and Angiopoietin levels were determined with ELISA. We found that Ang-1 levels were higher whereas Ang-2 levels were lower in MPN and HC when compared to AML. Our results suggest that though angiogenesis is increased in both AML and MPN, angiopoietin serum level profile of the two diseases are different, and MPN patients have similar Ang-1 and Ang-2 levels as HC. We conclude that, according to our results Ang-1 and Ang-2 do not only regulate tumor angiogenesis and the difference between angiopoietin levels of acute and chronic myeloid neoplasms could be a reflection of other effects of these growth factors on tumor malignancy.