Three women, Katie James, Kara Terol, and Hannah Sharma, have donated their original hearts to medical research following life-saving heart transplant surgeries. Each received a new heart before the age of 35 and subsequently chose to contribute their removed organs to scientific study, aiming to advance understanding and treatments for heart conditions.
Ms. Sharma, who was 28 at the time of her transplant, had dilated cardiomyopathy, a condition where the heart's main pumping chamber enlarges and thins, impairing its ability to pump blood effectively. She explained, "That heart wasn't what makes me 'me,' and I was happy to give it to scientists who needed it." Her condition is believed to have been triggered by a virus.
Kara Terol was pregnant when diagnosed with restrictive cardiomyopathy, a condition causing parts of the heart to stiffen. She had experienced symptoms for years, mistaking them for asthma, until a study on pregnancy's effects on the heart revealed her diagnosis. Her son was born in 2018, but by 2021, the strain on her lungs from the heart condition necessitated a transplant. "The donor who gave me my heart helped me more than anyone could, and so I wanted to pass that help on," Ms. Terol stated.
Katie James underwent her heart transplant a decade ago at age 32, after being diagnosed with arrhythmogenic cardiomyopathy at 20. This rare condition weakens the heart muscle because its cells do not adhere properly. Now 41, Ms. James expressed, "I had absolutely no hesitation about donating my heart to help advance medical knowledge. It is simple – I wouldn't be here without science and research, so it is the least I can offer."
Advancing Heart Failure Research
Tissue from all three hearts has contributed to a significant heart failure study at Imperial College London, funded by the British Heart Foundation. Researchers are investigating a protein called serca, which is deficient in patients with heart failure, leading to weaker heartbeats. In laboratory settings, scientists have been able to reintroduce this protein into heart cells from living donors, observing a stronger beat. If replicated in humans, this could lead to new treatments for heart failure symptoms such as fatigue and breathlessness.
Developing Lab-Grown Heart Valves
Ms. Sharma and Ms. James's heart tissue has also aided scientists at Imperial College London in their efforts to create heart valves in a laboratory. Current options for patients include mechanical valves, requiring lifelong medication to prevent clotting, or biological valves from animal tissue that typically degrade within 10 to 15 years. Dr. Najma Latif, who has led this research, highlighted the importance of such contributions, stating, "These people make discoveries possible that would otherwise never be achieved, which can transform the lives of others."
Understanding Cardiomyopathy
Tissue from Ms. Terol and Ms. James's hearts has been studied to understand how cardiomyopathy disrupts the organ's normal electrical signals. Researchers aim to identify specific damaged cells that cause the most disruption, potentially leading to more targeted treatments for the disease.
Professor Bryan Williams, chief scientific and medical officer at the British Heart Foundation, emphasized the significance of these donations. "Giving the gift of an organ donation is an incredible act, and yet we rarely talk about the extraordinary living heart donors," he said. "Their decision to donate their heart for research opens the door to discoveries that can only be made through examination of real human tissue, allowing researchers to identify the cause of heart diseases, test new ideas and refine treatments."
The Heart, Lung and Critical Care Biobank at Royal Brompton and Harefield Hospitals manages the storage of tissue from heart donors. Harshil Bhayani, the biobank's manager, noted that these contributions represent "a lasting legacy that supports progress in research and benefits future generations."