thromboxane b-2

Thromboxane B2 是一种在过敏反应期间释放的前列腺素衍生物。Thromboxane B2 诱导动脉收缩和血小板聚集。

Thromboxane B2 (TXB2) is a compound significantly released from aggregating platelets and undergoes metabolic transformation during circulation into 11-dehydro TXB2 and 2,3-dinor TXB2. The latter, 2,3-dinor TXB2, serves as a prevalent urinary metabolite of TXB2 and acts as an indicator for in vivo TXA2 synthesis. Studies have shown that in healthy male volunteers, the median excretion rate of 2,3-dinor TXB2 is measured at 10.3 ng hour, equivalent to 138 pg mg of creatinine.

11-Dehydro-2,3-dinor Thromboxane B2 (11-dehydro-2,3-dinor TXB2) is a metabolite derived from the inactive TXA2 metabolite, TXB2. Its formation involves the action of cytosolic aldehyde dehydrogenase (ALDH) and β-oxidation processes. Remarkably, levels of 11-dehydro-2,3-dinor TXB2 have been observed to increase by 5.2-fold in a surgery-induced rat model of tendon overuse, highlighting its potential role in physiological stress responses.

2,3,5,4'-Tetrahydroxystilbene 2-O-β-D-glucoside (Astragalus polyphenols) 是分离自蓼属植物物种的根中，对5-HETE、HHT、thromboxane B2的形成具有抑制作用。