Detailed description of the main functions, efficacy and indications of abatacept (Enrisu)

Abatacept (trade name: Orencia®) is a Selective T cell costimulation inhibitor, by interacting with TCD80/CD86< on the surface of T cells /span>molecules bind to block the interaction with CD28, thereby inhibiting the activation and immune response of T cells. Because T cells play a central role in autoimmune diseases, abatacept reduces the release of inflammatory mediators, thereby mitigating tissue damage and disease progression.

The main function of abatacept is to regulate the abnormal activation of the immune system, thereby controlling the chronic inflammatory process. Clinically, abatacept can significantly improve symptoms of joint pain, swelling and morning stiffness, delay joint structural damage, and improve patients' quality of life. Its effects usually appear gradually over weeks to months, and long-term use can maintain disease stability and reduce the risk of disease recurrence.

Abatacept is mainly used to treat moderate to severe rheumatoid arthritis (RA), especially for patients who have an inadequate response to or intolerance to traditional DMARDs (such as methotrexate). In addition, abatacept is also approved for the treatment of juvenile idiopathic arthritis (JIA) and psoriatic arthritis (PsA) to improve inflammatory symptoms and prevent joint damage. The dosage and administration method for patients of different age groups need to be adjusted according to the specific disease type and body weight.

In clinical application, abatacept can be administered via intravenous injection or subcutaneous injection, and must be used strictly in compliance with medical instructions. During use, attention should be paid to monitoring infection risk, immune response and vaccination status, because drugs inhibiting T cell activity may increase the risk of infection. It should be used with caution in patients with a history of active infection or cancer. Taken together, abatacept has significant efficacy in controlling inflammation in autoimmune diseases, delaying joint damage, and improving quality of life. It is an important treatment option for rheumatoid arthritis and related diseases.

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