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One reason BMT and PBSCT are used in cancer treatment is to make it possible for patients to receive very high doses of chemotherapy and/or radiation therapy. To understand more about why BMT and PBSCT are used, it is helpful to understand how chemotherapy and radiation therapy work.
The University of Texas Health Science Center at Houston is conducting a pioneering FDA-regulated phase I/II clinical trial to compare the safety and effectiveness of two forms of stem cell therapy in children diagnosed with cerebral palsy. The randomized, double-blinded, placebo-controlled study aims to compare the safety and efficacy of an intravenous infusion of autologous cord blood stem cells to bone marrow stem cells.
The longest study to date, published in 2011 by Broxmeyer at al found that stem cells cyro-preserved for 22.5 years engrafted as expected. There was no significant loss of stem cell recovery or proliferation.
The stem cells used for autologous transplantation must be relatively free of cancer cells. The harvested cells can sometimes be treated before transplantation in a process known as “purging” to get rid of cancer cells. This process can remove some cancer cells from the harvested cells and minimize the chance that cancer will come back. Because purging may damage some healthy stem cells, more cells are obtained from the patient before the transplant so that enough healthy stem cells will remain after purging.
Stem cells are often extracted from cord blood and bone marrow.Different cells have different life cycles, and many are constantly regenerating, but when damage occurs and the body needs to come up with a new supply of cells to heal itself, it relies on the stem cell’s ability to quickly create more cells to repair the wound. Herein lays the potential for the introduction of new stem cells to enhance or be the driving factor in the healing process.
Advances in treatment methods, including the use of PBSCT, have reduced the amount of time many patients must spend in the hospital by speeding recovery. This shorter recovery time has brought about a reduction in cost. However, because BMT and PBSCT are complicated technical procedures, they are very expensive. Many health insurance companies cover some of the costs of transplantation for certain types of cancer. Insurers may also cover a portion of the costs if special care is required when the patient returns home.
Cord Blood Registry is a registered trademark of CBR® Systems, Inc. Annual grant support for Parent’s Guide to Cord Blood Foundation is made possible by CBR® through the Newborn Possibilities Fund administered by Tides Foundation.
However, the American Academy of Pediatrics strongly encourages umbilical cord donations for general research purposes. Donors are encouraged to contact a cord blood bank by the 35th week of pregnancy.
In the United States, the Food and Drug Administration regulates any facility that stores cord blood; cord blood intended for use in the person from whom it came is not regulated, but cord blood for use in others is regulated as a drug and as a biologic. Several states also have regulations for cord blood banks.
Excitement about cord tissue’s potential to help conditions affecting cartilage, muscle and nerve cells continues to grow.19 Researchers are focusing on a wide range of potential treatment areas, including Parkinson’s disease, Alzheimer’s, liver fibrosis, lung cancer, and sports injuries. Since 2007 there have been 150 clinical trials using cord tissue stem cells.
Most of the diseases on the proven treatment list are inherited genetic diseases. Typically, a child with a genetic disease would require cord blood unit from a sibling or an unrelated donor. Having a sibling cord blood unit can be a great advantage as research shows that treatments using cord blood from a family member are about twice as successful as treatments using cord blood from a non-relative.9a, 17
^ Li, T; Xia, M; Gao, Y; Chen, Y; Xu, Y (2015). “Human umbilical cord mesenchymal stem cells: an overview of their potential in cell-based therapy”. Expert Opinion on Biological Therapy. 15 (9): 1293–306. doi:10.1517/14712598.2015.1051528. PMID 26067213.
Just like other blood donations, there is no cost to the donor of cord blood. If you do not choose to store your baby’s blood, please consider donating it. Your donation could make a difference in someone else’s life.
Since 1989, umbilical cord blood has been used successfully to treat children with leukaemia, anaemias and other blood diseases. Researchers are now looking at ways of increasing the number of haematopoietic stem cells that can be obtained from cord blood, so that they can be used to treat adults routinely too.
Properly preserved cord blood is long-lasting. Cord blood is stored in a nitrogen freezer (the same technology used to freeze donated sperm), so it can last for a long time. “The scientist who first developed cord blood preservation methods in 1990 has confirmed that some of the first specimens he stored 23 plus years ago are just as potent as fresh cord blood,” says Mary Halet, Director, Central Region at Be The Match, which is operated by the National Bone Marrow Foundation.
The syringe or bag should be pre-labeled with a unique number that identifies your baby. Cord blood may only be collected during the first 15 minutes following the birth and should be processed by the laboratory within 48 hours of collection.
Through these two means, we are always producing more cells. In fact, much of your body is in a state of constant renewal because many cells can live for only certain periods of time. The lifespan for a cell in the stomach lining is about two days. Red blood cells, about four months. Nerve and brain cells are supposed to live forever. This is why these cells rarely regenerate and take a long time if they do.
“This is a medical service that has to be done when your baby’s cells arrive and you certainly want them to be handled by good equipment and good technicians,” says Frances Verter, Ph.D., founder and director of Parent’s Guide to Cord Blood Foundation, a nonprofit dedicated to educating parents about cord blood donation and cord blood therapists. “It’s just not going to be cheap.” Although the American Academy of Pediatrics (AAP) states cord blood has been used to treat certain diseases successfully, there isn’t strong evidence to support cord blood banking. If a family does choose to bank cord blood, the AAP recommends public cord blood banking (instead of private) to reduce costs.
Cord blood donation doesn’t cost anything for parents. Public cord blood banks pay for everything which includes the collection, testing, and storing of umbilical cord blood. This means that cord blood donation is not possible in every hospital.
The American Congress of Obstetricians and Gynecologists and the American Academy of Pediatrics don’t recommend routine cord blood storage. The groups say private banks should only be used when there’s a sibling with a medical condition who could benefit from the stem cells. Families are encouraged to donate stem cells to a public bank to help others.
The harvested bone marrow is then processed to remove blood and bone fragments. Harvested bone marrow can be combined with a preservative and frozen to keep the stem cells alive until they are needed. This technique is known as cryopreservation. Stem cells can be cryopreserved for many years.
In an allogenic transplant, another person’s stem cells are used to treat a child’s disease. This kind of transplant is more likely to be done than an autologous transplant. In an allogenic transplant, the donor can be a relative or be unrelated to the child. For an allogenic transplant to work, there has to be a good match between donor and recipient. A donor is a good match when certain things about his or her cells and the recipient’s cells are alike. If the match is not good, the recipient’s immune system may reject the donated cells. If the cells are rejected, the transplant does not work.
Apheresis usually causes minimal discomfort. During apheresis, the person may feel lightheadedness, chills, numbness around the lips, and cramping in the hands. Unlike bone marrow donation, PBSC donation does not require anesthesia. The medication that is given to stimulate the mobilization (release) of stem cells from the marrow into the bloodstream may cause bone and muscle aches, headaches, fatigue, nausea, vomiting, and/or difficulty sleeping. These side effects generally stop within 2 to 3 days of the last dose of the medication.