For expectant mothers, promotional materials about cord blood banks often stand out among the many brochures received."Newborn umbilical cord blood stem cells can be used in regenerative medicine and as a replacement for bone marrow hematopoietic stem cells. Cherish this once-in-a-lifetime opportunity. Long-term storage of your child's umbilical cord blood is their 'life bank.' Act now..." Faced with such promotions, expectant mothers feel both intrigued and confused. Is umbilical cord blood truly that miraculous?Should they preserve it?
What exactly is it used for?
Primarily treating blood disorders
To understand umbilical cord blood's applications, one must first grasp what it is. Experts explain that umbilical cord blood is the blood remaining in the umbilical cord after the baby is delivered, the cord is clamped, and the placenta is expelled.
"Historically, umbilical cord blood was discarded as waste," experts explain. With scientific advancements, it was discovered that this blood contains hematopoietic stem cells capable of rebuilding the human hematopoietic and immune systems. These cells can be used in hematopoietic stem cell transplants to treat various diseases.
Regarding what conditions umbilical cord blood can treat, experts state that clinically, it shows significant therapeutic effects for blood disorders—such as leukemia—with relatively mature technology. "Should a child develop an illness later in life, stem cells extracted from stored cord blood offer a 100% match for transplantation, making it a highly safe option."
Should you store it?
Recommended if financially feasible
Regarding the cost of storing umbilical cord blood, a 20-year storage period typically ranges from 20,000 to 30,000 yuan. However, the fees for storing only the cord blood versus storing the entire cord may differ slightly.
In truth, preserving umbilical cord blood certainly holds value as an additional layer of protection and a potential lifesaving option. However, its role should not be overstated. For instance, autologous cord blood transplants can typically only restore hematopoietic function in pediatric patients, not in adults.
Some also argue that since the incidence of blood disorders isn't particularly high, the likelihood of using stored cord blood for the child's own treatment is low—so is it really necessary? Experts counter that storing cord blood poses no harm to either mother or child. For families with the financial means, preserving the baby's cord blood not only provides peace of mind but also adds an extra layer of security for the child.
What to Watch Out For?
Verify the Cord Blood Bank's Legitimacy
"Storing my baby's cord blood is a good idea, but how exactly is it preserved?" This concern likely crosses the minds of many expectant mothers.
Experts explain that modern cord blood preservation involves two components: the blood and the cord itself. "Historically, we primarily stored the cord blood to harvest its stem cells. In recent years, we've started preserving the entire cord alongside the blood, as the mesenchymal stem cells within it significantly enhance transplant success rates."
"The collected umbilical cord and cord blood cannot be stored directly. Typically, stem cells must be isolated and preserved in liquid nitrogen at -196°C," the expert explained. With technological advancements, stem cells extracted from cord blood will find increasingly diverse applications. If storage is feasible, it benefits both the individual and society.
However, experts caution that umbilical cord blood storage demands stringent conditions and carries certain risks—such as disease screening during preservation and potential contamination during storage. Furthermore, many hospitals do not operate their own cord blood banks but instead contract storage services from third-party facilities. Therefore, it is crucial to verify the location of the cord blood bank and confirm its approval by the National Health Commission.
Before deciding whether to store it, it's best to understand the advantages and disadvantages of using umbilical cord blood for disease treatment.
Advantages
1. Umbilical cord blood contains abundant stem cells, making it a crucial source of hematopoietic stem cells.
2. Umbilical cord blood has a lower viral carriage rate than bone marrow, offering higher safety.
3. The probability of graft-versus-host disease occurring with umbilical cord blood is lower, and the condition is generally milder.
4. Umbilical cord blood exhibits higher immunotolerance, allowing transplantation even with a difference of two lymphocyte antigen addresses (HLA), thereby providing more transplantation opportunities.
5.Umbilical cord blood can be collected, cryopreserved, and readily accessed, reducing the time required to locate hematopoietic stem cells and preventing delays in treatment.
Disadvantages
1. Due to the limited volume of umbilical cord blood, the cell count per cord blood sample is restricted, making it insufficient for adult treatments.
2. Longer recovery time and higher infection risk post-transplantation.Umbilical cord blood transplantation serves only as an adjunctive treatment; even successful transplants cannot guarantee complete prevention of relapse.
3. High storage costs. Processing a cord blood sample into preservable stem cells incurs direct costs (including testing) of approximately ¥5,000.
4. Concerns about transferring any inherent genetic defects from the cord blood to the recipient.