Elevated beta-thromboglobulin and mean platelet volume levels may show persistent platelet activation in systemic lupus erythematosus patients.

BACKGROUND: Patients with systemic lupus erythematosus (SLE) have an increased risk of thrombotic events. Platelets become more active and they enlarge to release proteins from alpha granules for aggregation during the plaque formation period. Beta-thromboglobulin is one of the proteins released from alpha-granules when platelets are activated and used as a marker of platelet activation in vivo. OBJECTIVES: The aim of this study was to evaluate the plasma levels of beta-thromoglobulin and mean platelet volume as markers of the presence of platelet activation in systemic lupus erythematosus patients compared with healthy controls. MATERIAL AND METHODS: Thirty-seven SLE patients with a mean disease duration of 4.96 years and without any organ involvement as well as 30 healthy volunteers were included in the study. All patients were in remission of SLE. RESULTS: The mean beta-thromboglobulin level was 97.36 ±55.8 ng/mL in the SLE group and 72.67 ±33.5 ng/mL in the control group (p = 0.029). The mean platelet volume level was 8.27 ±1.68 fL in the SLE group and 9.16 ±1.52 fL (p = 0.031) in the controls. CONCLUSIONS: Elevated beta-thromboglobulin levels in systemic lupus erythematosus patients may be associated with platelet activation in the early stages of disease, whereas lower mean platelet volume levels in the same population may be due to the effects of hydroxychloroquine and the inactivity of SLE.

TAFRO Syndrome: A Case Report from Turkey and Review of the Literature.

TAFRO syndrome is a rare subtype of the Castleman's disease which has been described over the last years. The name of TAFRO syndrome comes from thrombocytopenia, anasarca, myelofibrosis, renal dysfunction, and organomegaly. We report a young Turkish male patient presented with fever, night sweats, fatigue, nausea, bilateral pretibial pitting edema, abdominal pain and watery diarrhea. PET/CT revealed multiple lymphadenopathies in cervical, axillary, mediastinal, paraaortic, mesenteric and inguinal lymph nodes. Excisional lymph node biopsy showed atretic germinal centers and expanded interfollicular areas, containing sheets of plasma cells. The R-CHOP regimen was started, and his signs and symptoms improved after the treatment. The current case confirms the unique presentation of this syndrome, helping to understand its clinical course and treatment strategy.