El-Refaie M, Dulake C
J Clin Pathol. 1975 Oct;28(10):801-6. doi: 10.1136/jcp.28.10.801.
Counter-current immunoelectrohporesis is a rapid sensitive method for detecting pneumococcal capsular antigens in sputum. A result can be obtained within 45 minutes. The optimum conditions for performing the test are given. Counter-current immunoelectrophoresis works with all the 33 pneumococcal antigens tested except type 14. Better precipitin lines are obtained when the gel-support is acid (pH 6-6) than when it is alkaline (pH 8-6). Omniserum is as effective as group-specific sera for the identification of pneumococcal capsular antigens. The findings suggest that pneumococcal infection was present in 44% of 300 unselected suspected chest infections. Culture for pneumococci was positive in only 15% of these cases. The clinical importance of these findings is still being studied but our experience has shown that patients with chest infections should have effective antipneumococcal antibiotics as part of their regimen and that the laboratory diagnosis may be made quickly and accurately by counter-current immunoelectrophoresis.
对流免疫电泳是一种检测痰液中肺炎球菌荚膜抗原的快速灵敏方法。45分钟内即可得出结果。文中给出了进行该检测的最佳条件。除14型外,对流免疫电泳可用于检测所有33种肺炎球菌抗原。凝胶支持物呈酸性(pH 6 - 6)时比呈碱性(pH 8 - 6)时能获得更好的沉淀线。全效血清在鉴定肺炎球菌荚膜抗原方面与群特异性血清效果相同。研究结果表明,在300例未经挑选的疑似胸部感染病例中,44%存在肺炎球菌感染。这些病例中肺炎球菌培养仅15%呈阳性。这些发现的临床重要性仍在研究中,但我们的经验表明,胸部感染患者的治疗方案中应包含有效的抗肺炎球菌抗生素,并且通过对流免疫电泳可快速准确地进行实验室诊断。