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Transplant science is constantly improving. Several companies are bringing to market methods of “expanding” the stem cell population in the laboratory, and these methods are starting to be applied in clinical trials.
Now when you know what is cord blood, you might be wondering how it is collected. Well, cord blood is collected right after the birth of your little one. The procedure is completely painless and free from risks as well. The procedure is so quick, hassle-free and painless that neither a newborn nor a new mother realizes the entire procedure has taken place. Following is a list of steps depicting how the procedure is actually convened. Read on, to grasp a better insight on cord blood banking and its proceedings.
Parents have the option to privately store their newborn’s cord blood stem cells. There are now over a dozen private cord blood banks, and more open every year. Some have their own labs, while others contract with a lab. Cord blood stem cell banking is not a regulated industry; there are no certifications or licensing requirements to open a cord blood bank. Several banks are accredited by the American Association of Blood Banks. Please keep in mind there is a big difference between being accredited by the AABB and being a member of the AABB. To be accredited, the lab must follow strict standards and be inspected by the association.
The next step at either a public or family bank is to process the cord blood to separate the blood component holding stem cells. The final product has a volume of 25 milliliters and includes a cryoprotectant which prevents the cells from bursting when frozen. Typical cost, $250 to $300 per unit.
Some researchers suspect that umbilical cord blood contains other cells that may have therapeutic effects beyond the blood. Specialized immune cells may be able to tweak brain function, for instance. Trials around the world are studying umbilical cord blood’s capabilities in a wide range of diseases (see Table 2 here): Cerebral palsy, autism, diabetes and lupus are currently under investigation. The cells are even being tested for an ameliorating role in Alzheimer’s disease and other neurodegenerative conditions.
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Cord blood transplantation has been shown to be curative in patients with a variety of serious diseases. Physicians should be familiar with the rationale for cord blood banking and with the types of cord blood–banking programs available. Physicians consulted by prospective parents about cord blood banking can provide the following information:
The potential powers of these cells have researchers excited. But what that scientific hope means for expectant parents facing decisions about cord blood banking is far from clear. For all of the promise, there are lots of reasons why umbilical cord cells may turn out to be less useful than thought. Read my next post for more about these potential drawbacks.
Throughout the last few years, cord blood banking has turned out to be one of the most viable and commendable medical advancements. Wondering what is cord blood? Well, this is the blood extracted from the baby’s umbilical cord. The entire procedure, during which the blood is extracted, turns out to be painless and safe both for the child and the mother. On top of that, the baby, his family members, and many other individuals can enjoy high health benefits from the procedure of cord blood banking. So simply read along to know better about cord blood storage as well as overall cord blood banking procedures.
The main disadvantage of cord blood transplants is that they take at least a week longer to “engraft”, which means repopulate the patient’s blood supply so that cell counts reach minimum acceptable levels. The longer engraftment time is a risk because it leaves the patient vulnerable to a fatal infection for a longer time.
All cord blood banks in the US are required to register with Food and Drug Administration. To ensure safety, cord blood banks must comply with FDA regulations, including current good tissue practice regulations, donor screening and testing for infectious diseases, including HIV I & II (the virus that causes AIDS), Hepatitis B & C, which can cause liver disease, Cytomegalovirus (CMV) a virus that can lead to pneumonia, Human T-cell Lymphotropic Virus (HTLV) 1 & 2, which can suppress the immune system, West Nile Virus, Zika Virus, Treponema pallidum (the bacterium that can cause syphilis) and Variant Creutzfeldt-Jakob Disease (vCJD), a rare virus that can cause brain disease. Since 2011, the FDA has required public cord blood banks to obtain a license under a Biologics License Application.
Donating your baby’s cord blood to a public bank is always free. The limitations of the public banking network in the United States are: they only collect donations at large birthing hospitals in ethnically diverse communities, the mother must pass a health screening, they prefer registration by 34 weeks of pregnancy, and they only save the largest cord blood collections. The potential reward of public donation is that your baby could Be The Match to save a life!
Only three to five ounces of blood is collected from each umbilical cord. This small amount is enough to treat a sick child, but not an adult, unless multiple units of matched cord blood are used, says William T. Shearer, M.D., Ph.D., professor of Pediatrics and Immunology at Baylor College of Medicine in Houston.
The standard used to identify these cord blood banks was the number of cord blood and cord tissue units stored by each company. The purpose of this analysis is to compare pricing and services among the largest cord blood banks within the U.S., the most mature cord blood banking market in the world. These three industry giants also represent several of the largest cord blood banks worldwide.
Despite the benefits of using umbilical cord blood stem cells for transplant, the process also has some disadvantages (see Table 3). For stem cell transplants to be successful, measurable signs of engraftment must occur. Engraftment is the opposite of rejection and indicates that the stem cell transplant is “working.” Two measurable signs of engraftment are the recovery of both neutrophil (a type of white blood cell) and platelet (a clotting factor) production. These two clinical signs of recovery take longer to occur in umbilical cord blood stem cell transplants than in bone marrow stem cell transplants. In other words, the lab values for white blood cell production and platelet production take longer to increase after umbilical cord blood stem cell transplants than after bone marrow stem cell transplants (Hess, 1997; Moise, 2005).
Well, this is how the entire procedure of cord blood banking. Right after the blood is extracted, it is sent for to the bank. In the bank, the cord blood is checked, tested, processed and finally preserved. This preservation is ensured by controlled freezing under high end freezing conditions. Certain private banks collect a certain segment of the umbilical cord along with the cord blood. The umbilical cord tissue contains various stem cells that are quite different from the general cord blood cells. Research experts are studying in order to understand the possible use of the stem cells in medicine.
Choosing a bank (specifically a private bank) for her daughter’s cord blood made perfect sense to Julie Lehrman, a mom based in Chicago. “We wanted the extra assurance that we were doing everything we could to keep Lexi healthy,” Lehrman says. “I was older when Lexi was born, and there’s a lot we didn’t know about my mom’s health history, so we felt that we were making a smart decision.” Fortunately, Lexi was born healthy, and neither she nor anyone else in the family has needed the cord blood since it was stored seven years ago. But Lehrman has no regrets; she still feels the family made a wise investment. “Lexi or her brother or even one of us could still need that blood in the future, so I’m thankful that we have it.” But banking your child’s cord blood may not be the right decision for you. Read on to see if you should opt for private cord blood banking.
Some parents-to-be are sold on the advertising that banking their child’s cord blood could potentially treat an array of diseases the child, or his siblings, could encounter in their lives. Other parents-to-be may find all the promises too good to be true.
Additional ethical concerns about umbilical cord blood banking involve the timing of clamping the umbilical cord after birth. Overall, the issue of when to clamp and cut the umbilical cord is controversial. There is no consensus on how early or how late in the birthing process the umbilical cord ought to be clamped and cut, although the cord obviously still provides nourishment and removes waste until it is clamped or spontaneously stops pulsing (Lothian & DeVries, 2010). However, some practitioners might clamp the umbilical cord early in an effort to maximize the amount of cord blood obtained for banking, and thus “short change” the child and allow the infant to become anemic (Drew, 2005).
The blood that remains in the umbilical cord and the placenta after birth is called “cord blood”. Umbilical cord blood, umbilical cord tissue, and the placenta are all very rich sources of newborn stem cells. The stem cells in the after birth are not embryonic. Most of the stem cells in cord blood are blood-forming or hematopoietic stem cells. Most of the stem cells in cord tissue and the placenta are mesenchymal stem cells.
For much of pregnancy, the umbilical cord is the lifeline of a fetus, tethering it to the placenta. Snaking through the nearly 2-feet-long cord, there’s a vein ferrying nutrients and oxygen from mom’s blood (via the placenta), plus two arteries carrying oxygen- and nutrient-depleted blood from the fetus back to mom. Because mother’s blood and fetal blood don’t actually mix much, the blood in the placenta and umbilical cord at birth belongs mainly to the fetus.
Cord tissue contains a special type of stem cell that has the potential to treat injuries and diseases affecting cartilage, muscle, and nerve cells.19 Since 2007 there have been about 150 clinical trials that have used cord tissue stem cells in human patients.
When all the processing and testing is complete, the cord blood stem cells are frozen in cryogenic nitrogen freezers at -196° C until they are requested for patient therapy. Public banks are required to complete the entire laboratory processing and freeze the cord blood stem cells within 48 hours of collection. This is to insure the highest level of stem cell viability. The accreditation agencies allow family banks a window of 72 hours.
Prior to transplanting any type of tissue, a “matching” process must occur to increase the success of the transplant and decrease the likelihood that the transplant will be rejected. The rejection of a transplanted tissue is called “graft versus host disease.” The matching process dates back to the late 1950s when the human leukocyte antigens were discovered. There are two classes of human leukocyte antigens. The first class is located on the surface of almost all of the cells with a nucleus within the body of the cell. The second class of human leukocyte antigens is located on the surface of immune cells. Each of the two classes of antigens has three subgroups, creating six antigens for which matching can occur. Thus, a “6 of 6” matching of the antigens represents a “perfect” match. Beyond the matching process, other factors contribute to the success or failure of a stem cell transplant. These factors include, but are not limited to, the age of both the donor and the patient, the type of disease being treated, and the number of stem cells being transplanted (Moise, 2005).
FACT accredited: Cord blood companies that are FACT accredited have been evaluated by the Foundation for the Accreditation of Cellular Therapy, and they’re found to have met the foundation’s standards of operation.
Initially, cord blood stem cell transplantation using allogeneic umbilical cord blood was performed in relatively small children, because the cell dose per weight of recipient was shown to be important.19,20 However, older children, adolescents, and adults have benefited from unrelated allogeneic umbilical cord blood transplantation.34,55–61 Because of the relationship between cell dose per recipient weight and transplant outcome, the number of cord blood cells needed for marrow reconstitution in older children or young adults is much larger than that needed when cord blood is used for transplantation in small children. Cord blood transplants using multiple cryopreserved units from separate donors have been performed successfully in adults, and the approach is currently under investigation as a strategy to increase the dose of cells for transplantation in a single recipient.62 Cord blood is collected in observance of good obstetric and pediatric practice.45
One of the factors that influence engraftment time is cell dose (Gunning, 2007). Cell dose is directly related to the volume of umbilical cord blood collected. Cell dose refers to the amount of useful stem cells in the sample of blood. Because of the limited volume of cells collected from cord blood, the amount of stem cells in cord blood is approximately 10% less than the amount obtained from bone marrow (Moise, 2005). A single unit of umbilical cord blood usually contains 50 to 200 ml of blood (Gonzalez-Ryan et al., 2000). If an amount of cord blood is less than this minimum volume, the unit is discarded as being unsatisfactory because the cell dose of the sample would not be high enough. Collecting an insufficient volume of cord blood occurs in about 50% or more cases of cord blood collection (Drew, 2005). In general, fewer stem cells are needed for cord blood transplantation, and usually a volume of 50 to 100 ml of cord blood will provide enough of a cell dose for a child or small adult. However, should the recipient need additional stem cells, it is impossible to obtain more stem cells from the infant because the cord blood volume is a limited amount (Percer, 2009).
The cord blood collection process is simple, safe, and painless. The process usually takes no longer than five minutes. Cord blood collection does not interfere with delivery and is possible with both vaginal and cesarean deliveries.
Refer-a-friend program: The New England Cord Blood Bank gives families $100 for each friend they refer to the company, so customers have further incentive to choose the company for storage and processing.
Cade Hildreth is the Founder of BioInformant.com, the world’s largest publisher of stem cell industry news. Cade is a media expert on stem cells, recently interviewed by the Wall Street Journal, Los Angeles Business Journal, Xconomy, and Vogue Magazine.
Given the difficulty in estimating the need for using one’s own cord blood cells for transplantation, private storage of cord blood as “biological insurance” is unwise. However, banking should be considered if there is a family member with a current or potential need to undergo a stem cell transplantation.
Prior to freezing the cells, samples are taken for quality testing. Banks measure the number of cells that are positive for the CD34 marker, a protein that is used to estimate the number of blood-forming stem cells present. Typical cost, $150 to $200 per unit. They also measure the number of nucleated cells, another measure of stem cells, both before and after processing to determine the cell recovery rate. Typical expense, $35 per unit. A portion of the sample is submitted to check that there is no bacterial or fungal contamination. Typical expense, $75 per unit. Public banks will also check the ability of the sample to grow new cells by taking a culture called the CFU assay. Typical expense, $200 to $250 per unit.
Families that are predisposed to certain diseases, that are ethnically mixed, that are adopting a newborn child, or that have a family member who may need a stem cell transplant should take special care to understand the value the cells may provide and their storage options.
Cord blood transplants aren’t entirely new — they’ve been in use for about 20 years. In fact, the outcome of transplants has improved in the last 10 years, says Joanne Kurtzberg, M.D., director of the pediatric bone marrow and stem cell transplant program at Duke University.
Laughlin MJ, Rizzieri DA, Smith CA, et al. Hematologic engraftment and reconstitution of immune function post unrelated placental cord blood transplant in an adult with acute lymphocytic leukemia. Leuk Res.1998;22 :215– 219
One of the key things you’ll want the cord blood bank’s representative to explain to you is how the cord blood bank collects and stores cord blood. Collection and storage methods may differ across cord blood banking companies, and you’ll want to be sure that the cord blood bank complies with all federal standards.2
After all is said and done, the cost to collect, test, process and store a donated cord blood collection at a public bank is estimated to be $1,200 to $1,500 dollars for each unit banked. That does not include the expense for the regulatory and quality systems needed to maintain licensure, or the cost of collecting units that are discarded because they don’t meet standards.
A few years ago, cord blood was simply discarded as medical waste after a birth. However, in the past few years, doctors have recognized that the stem cells have unique qualities which can be used in the treatment of certain cancers. The most common medical use is for transplantation in many situations where bone marrow is considered. In the future, it is possible that scientists will discover more diseases that can be cured with cord blood.
Cord blood banking can be complex & difficult to research. To help consumers get started, our editors have spent over 200 hours reviewing the best cord blood registries & making this year’s selections of best all-around providers.
Are public banks and family banks the same, except for who may use the cord blood and the cost to the parents? No. Public banks are subject to much higher regulatory requirements, and compliance with regulations carries costs. At a family bank you pay the bank enough to cover the cost of storing your baby’s cord blood, plus they make a profit. When you donate to a public bank, it costs you nothing, but the bank pays more on processing each blood collection than at a family bank. Let’s look at the steps that take place in the laboratory.
It’s a less known fact that placental blood is also an abundant source of important stem cells being researched for future medical treatments. Banking placental blood in addition to cord blood with LifebankUSA:
Both public and family cord blood banks must register with the US Food and Drug Administration (FDA), and since Oct. 2011 public banks also need to apply for an FDA license. All cord blood banks are required by federal law to test the blood of the mother for infectious diseases. At public banks the screening is usually more extensive, similar to the tests performed when you donate blood. The typical expense to a public bank is $150 per unit.
For transplants, the primary advantage of cord blood stem cells over stem cells from adults is that they cause much less graft versus host disease (GvHD). In order to safely transplant adult stem cells, the patient and donor must match over at least 10 of 12 tissue types called Human Leukocyte Antigens (HLA), or 83% HLA match. By comparison, medical outcomes are just as good with cord blood that has a 4 out of 6 or 67% HLA match.
Many public banking proponents believe that the greater good to society is to donate your baby’s cord blood stem cells to a public bank for use by someone who may need it, since the likelihood of your baby needing it is very small.
Thornley I., Eapen M., Sung L., Lee S., Davies S., & Joffe S. (2009). Private cord blood banking: Experiences and views of pediatric hematopoietic cell transplantation physicians. Pediatrics, 123(3), 1011–1017 [PMC free article] [PubMed]
In recent years, umbilical cord blood has been used successfully to treat a variety of pediatric genetic, hematologic and oncologic disorders. This advance has resulted in both not-for-profit and for-profit cord blood banking programs. The AAP’s statement is intended to help guide physicians in answering parents’ questions about cord blood banking.
Wagner JE, Rosenthal J, Sweetman R, et al. Successful transplantation of HLA-matched and HLA-mismatched umbilical cord blood from unrelated donors: analysis of engraftment and acute graft-versus-host disease. Blood.1996;88 :795– 802