Low levels of platelets, making it difficult for the blood to clot. In some cases, transplanted cells recognize the recipient's cells as foreign and attack them. This is known as graft-versus-host disease (GVHD). You have a low white blood cell count after intensive treatment Therefore, you are at greater risk of contracting an infection.
This may be due to normally harmless bacteria that we have in our digestive system and on our skin. Stem cells hold great promise for new medical treatments. Learn about stem cell types, current and possible uses, and the status of research and practice. This new technique may allow the use of reprogrammed cells instead of embryonic stem cells and prevent the immune system from rejecting the new stem cells.
However, scientists do not yet know if the use of altered adult cells will cause adverse effects in humans. The FDA will continue to assist with the development and licensing of new stem cell therapies where scientific evidence supports the safety and effectiveness of the product. The Food and Drug Administration is concerned that some patients seeking cures and remedies are vulnerable to stem cell treatments that are illegal and potentially harmful. These are pluripotent stem cells (Ploo-RIP-UH-Tunt), which means that they can divide into more stem cells or become any type of cell in the body.
If more stem cells from one donor are available, they may be treated with a second transplant or with an infusion of residual lymphocytes (a type of white blood cell) from the donor. While you wait for the transplanted stem cells to start working, your transplant team may ask you to take special precautions to avoid injury and bleeding. The goal of a stem cell transplant in cancer is to prolong life and, in many cases, even cure cancer. Post-transplant lymphoproliferative disorder (PTSD) is an uncontrolled growth of lymph cells, actually a type of lymphoma, that can develop after an allogeneic stem cell transplant.
Before using investigational drugs in humans, researchers may use some types of stem cells to evaluate the safety and quality of medications. By altering the genes in adult cells, researchers can reprogram cells to act similar to embryonic stem cells. Compared to embryonic stem cells, adult stem cells have a more limited ability to give rise to several cells in the body. Embryonic stem cells can also trigger an immune response in which the recipient's body attacks stem cells as foreign invaders, or stem cells can simply stop working as expected, with unknown consequences.
Embryos used in embryonic stem cell research come from eggs that were fertilized in in vitro fertilization clinics, but were never implanted in the woman's uterus. It develops when blood cells formed from donor stem cells think the cells are foreign and attack them. For testing new drugs to be accurate, cells must be programmed to acquire the properties of the drug's target cell type. Adult stem cells may not be manipulated to produce all types of cells, limiting how adult stem cells can be used to treat diseases.
Researchers hope that stem cells will one day be effective in treating many medical conditions and diseases.