Posts Tagged 'immunology'

Post-heart transplant cancer rates are climbing

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More than 10 percent of heart transplant recipients developed cancer between one and five years post-transplantation—most commonly skin cancer—according to a study published in the Journal of the American College of Cardiology.

Survival in transplant patients with de novo malignancy—the first occurrence of cancer in the body—is markedly shorter than those with no malignancy, reported lead author Jong-Chan Youn, MD, PhD, and colleagues.

“Importantly, the increased risk of mortality was sizeable even for patients diagnosed with skin cancer; this finding is in contrast to the ...

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Key found to making transplant rejection a thing of the past?

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Houston Methodist researchers have cracked a code in T-cells that could make autoimmune diseases and organ transplant rejection a thing of the past.

Wenhao Chen, Ph.D., a scientist in the Immunobiology and Transplant Science Center at the Houston Methodist Research Institute, and his colleagues have identified a critical switch that controls T-cell function and dysfunction and have discovered a pathway to target it.

Their findings are described in an article titled “Ablation of Transcription Factor IRF4 Promotes Transplant Acceptance by Driving Allogenic ...

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High-dose influenza vaccine better for solid organ transplant recipients

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A high-dose influenza vaccine is preferable to a standard-dose vaccine in adult solid organ transplant recipients, according to study findings presented at IDWeek.

Yoichiro Natori, MD, clinical fellow of transplant infectious diseases at the University Health Network, University of Toronto, summarized results showing that a high-dose influenza vaccine (Fluzone High-Dose, Sanofi Pasteur; HD) demonstrated “significantly better immunogenicity” when compared with a standard-dose vaccine (Fluviral, GlaxoSmithKline; SD) in adult solid organ transplant recipients.

Transplant recipients are on lifelong immunosuppression and a particularly ...

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Heat therapy may aid treatment of cancer, organ transplants and autoimmune disease

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Heat therapy may be a promising treatment in the fight against cancer, autoimmune problems and efforts to avoid organ rejection in transplant patients, according to researchers at the University of Kentucky. The research team exposed colorectal cancer cells and T-cells—immune cells that fight disease—to temperatures lower (hypothermic) and higher (hyperthermic) than normal body temperatures. They observed the effects of these temperature changes on the energy production (bioenergetics) in both cell types. They will present their findings at the American Physiological ...

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Nanoparticles “trick” body into accepting organ transplants

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Using nanoparticles, Yale researchers have developed a drug-delivery system that could reduce organ transplant complications by hiding the donated tissue from the recipient’s immune system.

About 25,000 organ transplants are performed in the U.S. each year. Despite significant advances in the field, short-term and long-term organ rejection still poses a risk (rejection rates vary depending on the type of organ). The risk of rejection is even higher when the donor is deceased, due to organ damage.

T cells, the white blood cells ...

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Novel procedure improves kidney transplant success

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A new treatment might open the door for more patients with advanced kidney disease to get a transplant, a preliminary study suggests.

Of the 100,000-plus Americans waiting for a donor kidney, about one-third are “sensitized,” said Dr. Robert Montgomery, director of the Transplant Institute at NYU Langone in New York City.

Those patients face a tough situation: They harbor immune system antibodies that are primed to attack a donor organ.

The antibodies can form when a person is ...

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