Stem cell transplantation for cancer treatment

Transplantation of stem cells using bone marrow stem cells originates from bone marrow to provide a fresh source of new and healthy blood cells which in turn, allows a patient to receive advanced doses of chemotherapy to treat certain categories of cancer such as leukemia. This means that a person has a better chance of cancer endurance. The stem cells can be allogeneic bone marrow and therefore donated by a family member overseas, or they can be autologous, which uses a patient one’s own stem cells.

Importance of marrow

The marrow is the soft tissue found in the middle of bones. This helps in forming a new cell, stem cells are considered the father of these cells in the blood cells. Stem cells in the marrow have the vital task of creating a type of person’s cell. These are:

     * Red blood cells: oxygen transport

    * White blood cells: disease of the fight

    * Platelets: aid in clotting after an injury

The stem cells originate in bone marrow and in blood. After stem cells increase, they form the immature blood cells, which are then under a series of transformations that allow them to develop into mature blood cells. Once they are mature, cells migrate from the marrow and are initiated into the bloodstream, where they provide imperative functions in keeping the body alive and healthy.

Effects of chemotherapy

Why chemotherapy works by destroying cancer cells from growing rapidly, higher levels are generally more effective for killing cancer cells. Similar to cancer cells, however, the marrow cells grow quickly and are also very sensitive to chemotherapy treatment. Chemotherapy can destroy the core entirely possible, which then prevents new blood cells to become healthy.

Harvest of autologous stem cell marrow

In an autologous transplant, it is done by means of a patient’s own stem cells. The problem here is that the patient's bone marrow and peripheral blood cancer cells usually have many, so separating the stem cells can’t usually happen until the patient is in remission.

Harvesting stem cells from the marrow of Allogeneic

In allogeneic transplants, using a suitable donor, this may be a family member or a person unrelated to the patient. Similar to the harvest of autologous stem cell from bone marrow, a patient receives high doses of radiotherapy and possibly chemotherapy. This therapy will destroy the patient's marrow of the immune system, so that the patient's immune system does not attack the transplanted cells that are received from the donor. Graft refusal is a very real concern for allogeneic transplants, where the receiver's immune system recognizes transplanted cells as foreign cells and launches an immune attack. Before transplantation, to identify and discard the red blood cells in the sample of stem cells generally and particularly so if the donor’s of the blood group is different from the patient.

The stem cells are then instated into the patient via an intravenous line for several hours. The stem cells pass through to the marrow of the patient’s where they develop and create blood cells necessary for the functioning of the blood. Patients can also still be given the drug therapy for some time to decrease the chances of immune rejection.

Harvests stem cells from bone marrow are clearly a life saving procedure for those suffering from certain cancers such as leukemia. It is an older therapy of stem cell and has been proven successful for decades now. There are, however, the negative response of the application of the authorization and subsequent refinement of techniques for harvesting the stem cells. It is hoped that scientists will continue to focus on research to improve the chances of success for this important treatment.