Product Description
Natural human C5ais prepared from human C5 protein cleaved into C5a and C5b by human C5 convertase.The C5a is converted to C5a desArg by proteolytic removal of the C-terminal arginine.The primary carboxypeptidase responsible for Arg removal is serum carboxypeptidase N, but there are several different carboxypepticases in serum.C5a desArg is a naturally glycosylated polypeptide containing 73 amino acids with a molecular weight of approx. 10,250 daltons.It contains 25% carbohydrate attached to a single Asn residue at position 64. This carbohydrate is of variable structure leading to a broad distribution of MW upon analysis by mass spectroscopy.C5a is the most potent anaplylatoxin (compared to C3a and C4a).C5a desArg is produced when C5a is “inactivated” by removal of its C-terminal arginine amino acid.This cleavage occurs by the action of the plasma enzyme carboxypeptidase N.This inactivation is rapid and most C5a is converted to C5a desArg within minutes of its formation.“Inactivated” C5a still possesses approx. 1% of its anaphylatoxic and chemotatic activities, but its stimulatory activity is only reduced 10-fold.Thus, C5a desArg retains considerable biological activity even though it is frequently called inactivated C5a.Its biological properties include being weakly chemotactic for neutrophils (PMN), causing smooth muscle contraction, increasing vascular permeability, causing histamine and TNF-alpharelease, and causing lysosomal degranulation of immune cells.C5a and C5a desArg act through the C5a Receptor (C5aR, CD88, a G-protein coupled receptor) on PMN, monocytes, alveolar macrophages, and mast cells.A second receptor of unknown function (C5L2, gpr77) has been identified.Due to the widespread expression of C5a receptors and the results from C5aR KO mice it is believed that C5a and its receptors have many non-immunolgical functions in organ development, CNS development, neurodegeneration, tissue regeneration and hematopoiesis (Monk, P.N. et al. (2007)).
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IgM是免疫球蛋白M(Immunoglobulin M，IgM)的缩写。根据结构的不同将免疫球蛋白分为五种，IgM是人的免疫球蛋白之一，其他还有lgA、lgG、IgD和lgE。
风疹病毒抗体IgM阳性才需要治疗。
您好，对于优生学检查，有两种抗体，一种是IGG抗体，一种是IGM抗体，如果是前者阳性，只能说明即往以前有感染了这类病原体，而不能说明当前正在感染这个病毒的。
指导意见：
如果是后一种阳性，也就是说IGM抗体阳性时，就提示当前正在感染这个病毒的，需要及时行抗病毒的药物治疗为佳，治好后才行怀孕的，否则对于怀孕的胎儿有很大的影响的。
aware可自测不用抽血祝您健康天 猫！
HSV1型导致的一般都是腰部以上的感染，典型症状是水泡有可能引起脑炎，而且有非活化状态的潜伏。所以我觉得你根本就不用担心这个抗体IgG阳性的化验单。
