University gives dog a bone marrow transplant

By JoanneRUSSELL25

The same species that submitted itself to experimentation for treatments to human cancers is now getting a cure with N.C. State's first canine bone marrow transplant.

In 2008, Dr. Steven Suter, assistant professor of oncology, began performing bone marrow transplants, BMT, on dogs. N.C. State is the only university in the world that offers this treatment. While private practices do exist, mainly on the west coast, they have treated few dogs. People have traveled from across the country to utilize these services.

Once I became an oncologist, I realized that this could probably be done now in a clinical setting if the appropriate machines could be found, apheresis machines. Once I got a hold of some of these machines, I started collecting peripheral blood progenitor cells from a few research colony dogs. After I showed we could do that, we moved on to start transplanting client-owned dogs. We opened our canine BMT unit in October 2008, Suter said.

Until recently, the transplants used stem cells from the dogs' own blood, so only those who had a disease in remission could be treated. The treatment was typically used on dogs with lymphoma.

The cure rate of dogs with lymphoma treated with chemotherapy is less than 5 percent, so I felt we could do better on that front with BMT, Suter said. We have modified the protocol extensively since the first 24 dogs, so we are hoping it will now be better.

However this all changed with two Cavalier King Charles Spaniels, Chip and Zeke, earlier this year. Zeke was diagnosed with acute lymphocytic leukemia in December 2011. This disease could only be treated by use of donor bone marrow. Chip, a littermate, was the prime choice.

We do require a donor, since we can not harvest progenitor cells from the patient. Leukemia patients have too many cancer cells floating around in their blood, so the machine would harvest them also. So, we find a matched donor who does not have cancer obviously, and harvest the cells from them, Suter said. We don't use this procedure regularly to treat dogs with leukemia ... we've treated two dogs with leukemia. We use it mainly to treat dogs with lymphoma, which is a very different disease."

The owners of the dogs met for the first time at N.C. State for the procedure to take place.

Jason Hefner, a fourth year in veterinary medicine, worked with Zeke while he was here.

To our knowledge, only one previous case has been treated with a donor. Zeke had a great disposition, and I looked forward to visiting him each morning for his treatments. Zeke is now in New York and looking forward to a happy and healthy life, Hefner said.

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University gives dog a bone marrow transplant

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categoriaBone Marrow Stem Cells commentoComments Off on University gives dog a bone marrow transplant | dataMarch 15th, 2012

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