Maloney P C, Schneider H, Brandt B L
Infect Immun. 1972 Nov;6(5):657-8. doi: 10.1128/iai.6.5.657-661.1972.
Polysaccharide produced from cultures of serogroups A, B, and C Neisseria meningitidis was assayed by the serogroup-specific hemagglutination inhibition (HAI) test. The polysaccharide produced by all serogroups was found to increase during the exponential phase of growth. For serogroups A and C, the HAI activity was stable during the stationary phase; for serogroup B, however, the HAI decayed rapidly. The degradation of the serogroup B polysaccharide was not caused by enzymatic degradation, but was due to acid accumulation in the culture medium. The large-molecular-size serogroup B polysaccharide was stabilized by increasing the buffering capacity of the medium, which also increased the yield of this antigen.
用血清群特异性血凝抑制(HAI)试验测定了A、B和C血清群脑膜炎奈瑟菌培养物产生的多糖。发现所有血清群产生的多糖在生长指数期增加。对于A和C血清群,HAI活性在稳定期保持稳定;然而,对于B血清群,HAI活性迅速衰减。B血清群多糖的降解不是由酶促降解引起的,而是由于培养基中酸的积累。通过增加培养基的缓冲能力使大分子大小的B血清群多糖稳定,这也提高了该抗原的产量。