Bone marrow was a foreign term to us. What bone marrow is and what it does is not widely known but for those people receiving treatment for blood disorders, the medical descriptions of bone marrow become second nature. Parents and children alike learn and become fluent in a second medical language. Below is a description of what bone marrow does and why raising awareness about bone marrow donation is one of the Dream Chaser’s major goals. It is written from our perspective, using our language, and from our experience. For more detailed information, we have included links at the bottom of the page.
What is bone marrow?
Put simply, bone marrow is the stuff that fills our bones. It is the place where all of our blood cells are developed. Red cells, white cells and platelets are the three main types of blood cells in our bodies, and they all play a vital role in keeping our bone marrow and bodies functioning properly. For example, red cells contain hemoglobin which are the oxygen transporters and carbon dioxide “expellers” (taking the carbon dioxide to the lungs to be breathed out). White cells are the army that fight foreign threats like infections and platelets are in charge of ensuring the bloods clotting mechanisms are functional. The analogy that is often used to visualise the process is that our bone marrow is a “blood cell factory”. Cells only have a limited life span so a healthy body is constantly replenishing it’s stocks.
What is a bone marrow transplant?
One way to treat some blood cancers and other immune disorders is to get rid of these unhealthy cells (which is what chemotherapy does) and replace the marrow with a healthy cell population. The job of these new cells is to rebuild the body’s immune and blood systems in order for the body to function properly as a whole. A common way to do this is through an “Allogenic” transplant where someone else’s healthy and compatible cells are literally injected into the recipient’s body. While the process sounds intense, it is not as surgically invasive as the word ‘transplant’ suggests. Instead, it’ similar to a transfusion where a portion of the donors’ healthy cells are extracted and then intravenously given to the patient similar to a blood transfusion. There are two types of transplants, a sibling allograft transplant or a matched unrelated donor transplant. The first type is when a sibling of the patient has a compatible tissue type, however if this is not an option, a person who is a suitable match, becomes the donor for the transplant. In the case where neither of these are an option, patients may receive a stem cell transplant. This is where stem cells have been collected from an umbilical cord of a baby and stored until needed. This is known as a cord blood transplant.
How can my bone marrow help?
Only one in three patients has a matched family member. This means that the other two patients have to search the international donor database and hope for a match. Your ethnic background plays a big role in whether you are likely to find a match. Currently there is about 19 million people on the donor list, however only around 7000 of those are of Maori and Pacific Island ancestry, which significantly decreases the likelihood of finding a match.
If you have Maori or Pacific Island ancestry you could save a life by joining the bone marrow donor database. You may never be called as a match but if you do then you could mean the difference between life and death for the patient.
[mls_h2]NZBMDR are currently recruiting:[/mls_h2]
- People aged between 18-40 years with Maori or Pacific Island ancestry or an ancestor from any NZ ethnic minority group (or)
- People aged between 18-60 years (regardless of ethnicity) who have previously been tissue-typed as a platelet donor or for an overseas bone-marrow registry and
- Are able to meet the NZ Blood Service requirements to donate blood
- Are willing to donate bone marrow to any patient anywhere in the world
What is the process?
It’s simple! Just visit New Zealand Bone Marrow Donor Registry (NZBMDR) and register your interest. Here you will be asked to donate one unit of blood. You will be asked to complete a NZBMDR consent form allowing blood to be taken for tissue-typing tests. Once you are on the list, thats it! if you are found to be a match, then there are two types of bone marrow donation procedures:
Peripheral Blood Stem Cell collection (PBSC) – this is where your stem cells are collected from a vein and then inserted into a machine. The stem cells are extracted from the rest of your blood and then this blood is pumped back into you. This procedure can take up to 3 -4 hours. Prior to the actual transfusion you may be given a medication known as GCSF which attempts to boost stem cell numbers since naturally the body does not create a large amount.
Pelvic hip bone collection – this is where bone marrow is collected in a syringe from your pelvic hip bone under anesthetic. The operation usually takes about two hours and often requires a night in hospital as a precautionary measure. Healthy bone marrow regenerates quickly so the patient can usually resume normal activity within a few days post operation.
I want to donate my bone marrow, now what?
Contact the New Zealand Bone Marrow Donor Registry (NZBMDR) and register your interest in joining up.
Phone
0800 800 256 or (09) 523 5756
Fax
(09) 523 5757










