TPA

TPA or Tissue Plasminogen Activator is a serine protease (enzyme) found in the endothelial cells lining the blood vessels. It plays a crucial role in the breakdown of blood clots by catalyzing the conversion of plasminogen to plasmin, the major enzyme responsible for clot breakdown. TPA is used in some cases of diseases that feature blood clots, such as pulmonary embolism and stroke.

Function

TPA is produced by the endothelial cells lining the blood vessels. It is a serine protease (enzyme) that is released into the blood stream after an injury. TPA then binds to a substance called plasminogen, which is found in the blood. This binding activates the plasminogen, turning it into plasmin. Plasmin is the enzyme responsible for breaking down blood clots.

Medical Use

TPA is used in medicine to break down blood clots in patients with certain conditions such as stroke and pulmonary embolism. It is given by injection into a vein. The use of TPA can reduce the damage caused by a stroke or other conditions caused by blood clots. However, it must be used carefully, as it can also increase the risk of bleeding.

Side Effects

The most common side effect of TPA is bleeding. This can occur at the site of injection or at other sites in the body. Other side effects can include allergic reactions, such as rash, itching, and difficulty breathing. In rare cases, TPA can cause a serious condition called angioedema, which involves swelling of the face, lips, tongue, or throat.

See Also

• Blood clot
• Stroke
• Pulmonary embolism
• Serine protease
• Endothelial cells