Acute Rejection

When dealing with acute rejection, a rapid immune attack that occurs weeks to months after an organ transplant. Also known as cellular rejection, it signals that the recipient's immune system is recognizing the new organ as foreign and mounting a response that can damage the graft.

Understanding acute rejection means looking at the broader transplant ecosystem. A transplant, the surgical transfer of an organ from donor to recipient sets the stage, but the success of that surgery hinges on three interconnected pieces: the graft itself, the level of HLA (human leukocyte antigen) compatibility, and the immunosuppressive regimen used to keep the immune system in check.

Key Factors in Managing Acute Rejection

The graft—whether it's a kidney, liver, heart, or lung—acts as the target of the immune response. When HLA matching is poor, the likelihood of an acute episode rises dramatically. HLA mismatch, differences in donor and recipient antigen profiles fuels the activation of T‑cells, which then attack the graft tissue. To blunt this reaction, clinicians prescribe immunosuppression, drugs that dampen the immune system’s activity. Common agents include tacrolimus, cyclosporine, and steroids, each with its own risk‑benefit profile.

Monitoring plays a pivotal role, too. Regular biopsies and blood tests can catch early signs of inflammation before the graft suffers irreversible damage. Early detection allows for a quick tweak of the immunosuppressive cocktail, often preventing a full‑blown rejection event. This cycle—recognize, intervene, adjust—creates a feedback loop that keeps the graft viable and the patient healthy.

Below you’ll find a range of articles that dive into the nuances of transplant medication choices, side‑effect management, and practical tips for staying on top of graft health. Whether you’re a patient navigating post‑transplant care or a caregiver looking for clear guidance, the collection offers actionable insights that tie back to the core concepts of acute rejection, immunosuppression, HLA compatibility, and graft monitoring.

Learn how organ rejection fuels post‑transplant complications, the differences between acute and chronic rejection, and practical steps to monitor, prevent, and manage these risks.