الاثنين، 30 يوليو 2012

The causes of aplastic anemia - anemia Alablastaih

Cavity contains many of the bones of the body spongy substance called red marrow Bone marrow
 And bone marrow has the function of the utmost importance it contains cells called stem cells that are the primary cells for the manufacture of other blood cells (red blood cells, white blood cells, platelets). Are the production of various blood cells in the bone marrow to enter the bloodstream.Bone marrow needs to continually produce new blood cells to replace old cells. Each type of blood cell has a life lived and after die and need to be compensated rather than new cells. For example, red blood cells live for 120 days, platelets 7 days, and most white blood cells live one day or less. In the normal case the bone marrow to provide the necessary numbers of blood cells. In the case of aplastic anemia - anemia occurs Alablastaih destruction of the bone marrow, causing a shortage of blood cells that are produced.
And summarized the reasons for the destruction of the bone marrow in the following:

    
Exposure to high doses of radiation (during radiotherapy) or chemotherapy in cases of treatment of diseases of cancerous tumors. Treatment chemotherapy or radiation to destroy the cancer cells and does not distinguish between them and the primary cells of the bone marrow of who shall also destroyed, causing anemia, aplastic - Alablastaih anemia.

    
Exposure to toxic chemicals.

    
Use of certain medications such as certain drugs to treat rheumatoid arthritis and some types of antibiotics.

    
Imbalance in the immune system.

    
Genetic factors.

    
Unknown reasons. Sometimes the injury occur aplastic anemia - anemia Alablastaih for unknown reasons, and is called aplastic poorest blood - anemia Alablastaih unknown reason Idiopathic aplastic anemia

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