Coagulation disorders and abnormal platelet activation are frequent findings in hematological malignancies. A hypercoagulable state is induced by malignant cells interacting directly with haemostatic system and activating the coagulation cascade. This is descriptive, prospective analytical case- control study done in Radiation & Isotopes Center Khartoum (RICK) to determine the haemostatic abnormalities and vascular damage of hematological malignancies among the major Sudanese patients.Hemostasis studies shown that, there were decreased level of fibrinogenand antithrombin III, vWf and PAI-1 were significantly elevated in ALL and in AML patients. significantly low platelet counts in AML, CLL and increased in CML and CGL ( CML ph positive) in related to control group. D-dimers was positive in 79 % of patients.platelet aggregation in response to ADP, Collagen, and Epinephrine agonists was decreased in ALL, AML and MM, and in variable in CML and NHL, and increased in CLL and HL.Markers of coagulation and platelet defect was clearly observed in hematological malignancies patients, also indication of fibrinolysis and endothelial activation were confirmed
Flow cytometer became one of the most pivotal and definitive techniques in the diagnosis and classification of mature B cell neoplasm (MBCN). Since flow cytometer exploits the laser and photomultiplier technology for reliable high quality result with extremely high sensitivity and specificity, we used these important specifications in this project to study the properties of B cells in the adult patients whose have initial diagnosis of (MBCN). This book discussed the diversity of the flow cytometer parameters (such as the percentage of positive cells, the mean fluorescence intensity and the positive peak width) which showed a remarkable role in the diagnosis of MBCN and in differentiation between CLL and NHL. The worth of the idea of this diversity of the parameters exhibited in the minimization of the markers number following into the minimization of panel cost without affecting the result. Also, using of CD20 & CD19 with their flow cytometric parameters and without the other scoring markers showed a significant role in differentiation between CLL and NHL. These ideas are appropriate for the used in laboratories of limited resources.
Chronic lymphocytic leukemia (CLL) is the most common hematological malignancy in western countries. It is characterized by the accumulation of monoclonal CD5+ B-lymphocytes in blood, bone marrow, and lymphoid organs, due to an imbalance between proliferation and cell death. It is a complex disease that remains misunderstood. This book, therefore describes globally this very common but extremely complex type of leukemia. Throughout this book the principal biological hallmarks of B-cells are compared with the principal features of CLL-leukemic B-cells. Additionally the current CLL epidemiology is indicated and the most common methods of diagnosis are discussed. Moreover, the principal prognostic factors of CLL are described, passing from a medical point of view to a biological description. The major characteristics conferring apoptotic avoidance of CLL cells and proliferation factors are detailed, such as the principal models for its in vitro and in vivo study. Finally, the leading conventional treatments and new therapeutic strategies against CLL are listed with their principal biological targets.
Our findings demonstrate the need of ex vivo chronic lymphocytic leukemia cell (CLL) treatment before the application of drugs to select the most efficient manner of the patient's therapy. The obtained results confirm the link between the outcomes of the research done under ex vivo and in vivo conditions and underline the usefulness of ex vivo studies in the individual choice of CLL treatment. Our observations provide a base for further studies on the relationship between the in vivo clinical responses of patients and ex vivo pro-apoptotic activity, and the cytotoxicity of drugs against leukemic cells. Their validation by a study comprising a much larger group of patients is needed.