A substance made by platelets that causes blood clotting and constriction of blood vessels. It also encourages platelet aggregation. There are two thromboxanes. Thromboxane A2 (TXA2) is active but is very unstable and has a half-life of only 30 seconds before it undergoes hydrolysis to form thromboxane B2 (TXB2) which is inactive. The thromboxanes are derived from arachidonic acid and are related to prostaglandins. Aspirin acts by inhibiting the COX enzyme from synthesizing precursors of thromboxane in platelets thereby reducing platelet aggregation.
- Thromboxane A2
The active type of thromboxane. Abbreviated TXA2.
- Thromboxane B2
The inactive product of thromboxane. Abbreviated TXB2
A clot in a blood vessel or within the heart.
Yeast infection of the mouth and throat, characterized by patches of white, caused by the fungus Candida albicans . Yeast are part of the normal flora in the mouth. They ordinarily do not cause symptoms. Certain conditions, such as antibiotic use, can disturb the natural balance of microorganisms in the mouth and allow the overgrowth […]
The short thick finger situated at an angle to the other fingers so it can be opposed to the them, making it possible to pick up and hold things. The thumb is analogous in position to the big toe (the great toe) and similarly has only two phalanges (all the other digits have three).