Thromboembolic events represent the main cause of morbidity and mortality in patients with polycythemia vera. Leukocytosis has been identified as an important risk factor for development vascular thrombosis. A 47-year-old woman vera presented pain swelling her right calf. She was scheduled to receive anagrelide which effective on thrombocytosis, but leukocytosis persisted. diagnosed thrombosis ...

Leukocytosis may develop in women undergoing ovulation induction. The production of blood leukocytes and their numbers in circulation are regulated by complex interactions involving endogenous haematopoietic cytokines, such as granulocyte-colony stimulating factor (G-CSF), monocyte-colony stimulating factor (M-CSF), and interleukins. The purpose of this prospective study was to explore the pres...

Nucleotide Metabolism To the Editor: We read with interest the paper by Barry S. Coller on leukocytosis and its relationship with vascular disease morbidity and mortality1 and the subsequent correspondence.2,3 We are intrigued to learn that relative leukocytopenia may be associated with increased morbidity and mortality in patients with acute myocardial infarction1,4 and in those undergoing per...

Two distinct monoclonal antibodies, one to pertussis toxin subunit S2, called 9G8, and another to subunits S2 and S3, called 11E6, were generated from the hybridomas of myeloma SP2/0 and spleen cells of BALB/c mice immunized mainly with the subunit S234 complex. Binding ability of 9G8 and 11E6 to the subunits was confirmed by the enzyme-linked immunosorbent assay and immunoblotting analysis. Ge...

Leukocytes contribute to the pathogenesis of thrombosis in essential thrombocythemia (ET) through recently discovered mechanisms of activation and interaction with platelets and endothelial cells. To evaluate whether an increased leukocyte count was associated with thrombosis and whether this effect can be modulated by therapy, we analyzed the clinical course of 439 patients with ET followed at...

T HE earlier studies of the writer have demonstrated that the leukocytosis accompanying many inflammatory processes is referable to the liberation at the site of inflammation of a factor closely associated with the pseudoglobulin fraction of ‘ ‘ 2 , 3 The factor per se offers a reasonable explanation for the mechanism of leukocytosis with inflammation. This factor not only induces a discharge o...

The association between leukocytosis and increased morbidity and mortality of ischemic vascular disease has been observed for more than half a century, and recent studies in >350,000 patients confirm the robustness of the association and the dramatically higher relative and absolute acute and chronic mortality rates in patients with high versus low leukocyte counts. Although there is reason to ...