Ligand binding to the thrombopoietin receptor is thought to stabilize an active receptor dimer that regulates megakaryocyte differentiation and platelet formation, as well as haematopoietic stem cell renewal. By fusing a dimeric coiled coil in all seven possible orientations to the thrombopoietin receptor transmembrane (TM)-cytoplasmic domains, we show that specific biological effects and in vi...

Thrombocytopenia is a common manifestation of tumors, which usually caused by myelosuppression bone marrow involvement malignant tumor cells or radiotherapy. Immune thrombocytopenia (ITP), as paraneoplastic syndrome, more in lymphatic proliferative neoplasms and rheumatic diseases, less solid neoplasms, has not been reported peritoneal epithelioid mesothelioma.Herein, we report 45-year-old pati...

The therapy for immune thrombocytopenic purpura (ITP) has evolved in the recent past. In certain cases therapy for ITP remains inadequate. Thrombopoietin receptor agonists are the latest addition to the armamentarium to manage the thrombocytopenia. While romiplostim was the first second generation thrombopoietin agonist to become available, eltrombopag is particularly attractive as it is an ora...

Thrombocytopenia is a common hematologic disorder. Stimulation of thrombopoiesis may reduce the risk for thrombocytopenia-induced bleeding, prevent severe thrombocytopenia, and reduce the need for platelet transfusion. The key cytokine is thrombopoietin (TPO). It regulates proliferation and maturation of megakaryocytes as well as platelet production. TPO is synthesized in the liver. Development...

Thrombopoietin is known to be essential for megakaryocytopoiesis and thrombopoiesis. Recently, we and others have shown that thrombopoietin induces rapid tyrosine phosphorylation of Jak2 and other proteins in human platelets and BaF3 cells, genetically engineered to express c-Mpl, a receptor for thrombopoietin. The Jak family of tyrosine kinases are known to mediate some of the effects of cytok...

Thrombocytopenia (platelet count <150 × 10(9)/L) often complicates chronic liver disease, impeding optimal management of these patients. The prevalence of this manifestation ranges from 6% among non-cirrhotic patients with chronic liver disease to 70% among patients with liver cirrhosis. It has also been shown that the severity of liver disease is associated with both prevalence and level of th...

BACKGROUND AND OBJECTIVE Thrombopoietin has been established as the major regulator of megakaryocyte and platelet production. In this study we evaluated the effects of PEG-recombinant human megakaryocyte growth and development factor (PEG-rHuMGDF), a pegylated and truncated form of thrombopoietin, on the growth and differentiation of the HEL cell line. As a model system we chose the pluripotent...

which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Chronic immune thrombocytopenia (ITP) is an auto-immune disease characterized by immune-mediated platelet destruction and reduced platelet production caused by antiplatelet autoantibodies, leading to a marked decrease in platelet count and rarely life-threat...