补体是机体非特异性免疫系统的一个重要组成部分。在补体系统中,有许多抑制剂参与调控其功能。补体C(?)抑制剂(C(?)-INH)正是其中的一种,它最初因可抑制补体第一组分而获名,因而又称之为C(?)灭活剂或C(?)酯酶抑制剂。进一步的研究发现,它不仅是一种强有力的补体抑制因子,而且是血浆中多种特异性蛋白酶的抑制剂,如:它可抑制 Complement is an important component of the body’s non-specific immune system. In the complement system, there are many inhibitors involved in regulating its function. One of these is the complement C(?) inhibitor (C(?)-INH), which was originally named for its ability to inhibit the first component of complement and is therefore also known as the C(?) inactivator or C (?) Esterase inhibitors. Further studies have found that it is not only a potent complement inhibitor, but also an inhibitor of multiple specific proteases in plasma, such as: it inhibits