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BY DAVID VILLANO
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Birnholzs testimonial is far from unique. Each year more than 20,000 people nationwide receive organ transplants. In less than a generation, transplant surgery has progressed from largely experimental to nearly routine. Lives are prolonged, dreams renewed, and quality of life immeasurably enhanced. And UM/Jackson is a major force behind this revolution in patient care. Physicians from the centers transplant division are known worldwide as pioneers in their fields. There, new drugs and surgical procedures are routinely developed. Patients seeking treatment travel to the center from around the globe. And with close to 500 transplant operations performed annually, including some performed nowhere else in the nation, UM/Jackson ranks among the top three medical centers for organ transplantation in the United States.
In 2000 the center recorded the first heart-lung transplant in South Florida. Dr. Miller, a past president of the American Society of Transplant Surgeons and now the codirector of the Division of Transplantation at the School of Medicine, attributes the programs growth to the broader contributions to patient care made by advances in transplant science. What we do impacts many other areas of medicinemolecular biology, cancer treatment, immune system diseases. There is so much spin-off, says Dr. Miller. Today UM/Jackson is one of the busiest transplant centers in the nation. Each year surgeons replace more than 150 kidneys, 200 livers, and 30 hearts. More importantly, it also is one of the most successful, with patient survivability often higher than national averages. The kidney program, with one of the highest survivability rates among all U.S. medical centers, is a good example. Dr. Miller credits the high success rate to a list of factors: improved organ removal and preservation techniques; collaboration with pharmaceutical companies developing new immunosuppressant drugs; and their unique sophisticated immunological monitoring systems that allow physicians to continuously determine whether the patients body is receiving the correct amount of postoperative medication. Organ preservation techniques are unparalleled at the Universitys Organ Procurement Organization (OPO), run by Les Olson, its founding director. Olson has significantly enhanced the integrity and effectiveness of the process, making the OPO one of the most productive procurement organizations in the United States. His tireless efforts have helped rescue thousands of organs and tissues for South Floridians and individuals throughout the nation. Another key factor, explains Dr. Miller, is UM/Jacksons effort at developing techniques to decrease the likelihood of organ rejection. While the use of immunosuppressants is still required, UM/Jackson researchers are experimenting with new approaches. Among the most promising involves the intravenous infusion of bone marrow from the organ donor to the recipient patient.
Dr. Tzakis, who could have written his own ticket in the high-profile world of transplant surgery, says he jumped to UM/Jackson because few medical centers could offer such a range of resources: one of the top clinical liver units in the nation, a well-established immunology lab, and a most-respected organ procurement program. He says he also was attracted by the success of UM/Jacksons kidney transplantation program and of the adjacent Diabetes Research Institute. It seemed like all the pieces were there, he recalls. The infrastructure was in place to build something very special. Dr. Tzakis has performed more than 1,000 transplant surgeries since his arrival in 1994. While Dr. Tzakis brought name recognition to UM/Jackson, his more lasting contribution is the creation of one of the top liver transplant programs in the nation. This certainly has been one of our objectives, he says. To develop novel approaches. And innovative procedures. For example, Dr. Tzakis team helped develop antiviral drugs that prevent the recurrence of Hepatitis B in liver transplant patients. Previously, the risk of recurrence was so high that transplantation was rarely prescribed for patients infected with the virus. This is another of the challenges were working to overcome, he explains. We can do a transplant, but how do we know there wont be a recurrence of the original disease in the new, healthy organ? Although he has spent much of his career developing techniques for treating patients with liver disease, Dr. Tzakis also is known worldwide for intestinal and multi-visceral (multi-organ) transplantation. Indeed, going back to his days at the University of Pittsburgh, few surgeons, if any, have performed more intestinal transplants than Dr. Tzakis. Other than the brain, the intestine is often regarded as the last frontier of transplant science. With a potent, complex immune-response system in place (to protect the body from bacteria, viruses, and other invaders humans ingest), the intestine has long defied surgeons attempts at transplantation. Donor organs were hopelessly overwhelmed by the bodys defense mechanisms. While problems still exist, Dr. Tzakis work has opened an avenue of hope for patients who equate intestinal disease with a death sentence. Dr. Tzakis, now codirector, along with Dr. Miller, of the Division of Transplantation, sees his mandate in the broadest possible terms: to better treat all patients needing transplants, regardless of the organ or disease. To that end, he is helping to develop other organ transplant programs at UM/Jackson. The centers program in pediatric cardiothoracic surgery, under the direction of Eliot Rosenkrantz, M.D., is regarded among the nations best. Earlier this year Dr. Rosenkrantz remarkably performed two heart transplants in a single day, saving the lives of two children with congenital heart defects.
But ironically, improved health and safety practices in recent years are creating a shortage of organ donors. A decrease in violent crime, mandatory gun locks in some states, a greater use of seatbelts, and increased awareness of drunk driving laws all have worked to reduce the rate of patients who die suddenly or who linger in a coma after a violent injury. That, coupled with significant advances in transplant surgery, has caused a widening gap between the number of organ donors and the number of patients needing a transplant. According to figures compiled by the United Network for Organ Sharing (UNOS), a government organization that helps match donors with recipients, about 15,000 patients received transplants in 1999, leaving around 7,000 more on a waiting list for organs. By 2000, the number of transplants increased to 22,000, but requests increased to 72,000, swelling the waiting list to about 50,000. The gap continues to widen. An average of 15 people die every day waiting for organs that could have saved their lives. In a way weve become a victim of our own success, says UNOS President Patricia Adams, M.D. With the success and acceptance of organ transplantation, it has become routine therapy for many diseases. We have the know-how to save tens of thousands of lives. What we dont have is enough donated organs to make it possible. The dilemma has spawned debate on how to best encourage organ donation. Surgeons say few hospitals respond quickly and efficiently following the death of a potential organ donor. Expediency is crucial: hearts and lungs must be transplanted within a few hours of removal from the donors body; livers can last up to ten hours, kidneys up to a day or two. Some argue that family members should be counseled more aggressively when a patient slips into a coma. Others propose the use of anencephalic babiesthose born missing much of their brain and with little chance of survival. But critics warn against redefining death. A need to harvest organs from the dying should never interfere with every doctors first rule: do no harm. Instead, they say, public awareness programs should target new organ donors. Hospitals should improve systems to harvest and preserve organs. Public policy also can help. Some European countries have adopted presumed consent laws, which allow surgeons to remove organs unless an individual specifies otherwise prior to death. One person who supports such a law is David Adams, Ph.D. Six years ago, suffering from chronic liver disease, Adams received a liver transplant at UM/Jackson. The experience so changed his outlook on life that Dr. Adams, a psychologist in private practice most of his career, moved to Miami from his home in St. Petersburg, Florida, to work as a counselor at the UM/Jackson transplant program. Someone elses liver saved my life, says Dr. Adams, now 72. People are dying every day while waiting for organs. Im proof that that doesnt have to happen, and that there is life after transplantation. |
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David Villano (A.B. 83) is a frequent contributor to the Universitys alumni magazines. Illustration by Philippe Lardy. Photography by John Zillioux. | |
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