{"title":"DNA探针快速检测肺炎链球菌和流感嗜血杆菌","authors":"Hui-zhen Fan, Hua-peng Yu, Wen-jie Huang","doi":"","DOIUrl":null,"url":null,"abstract":"<p><strong>Objective: </strong>To establish a method for rapid molecular detection of Streptococcus pneumoniae and Haemophilus influenzae in the early stage of infection.</p><p><strong>Methods: </strong>Specific DNA probes for Streptococcus pneumoniae and Haemophilus influenzae and 16 S rRNA universal probe of bacteria were synthesized by polymerase chain reaction (PCR) and labeled with biotin. The DNA of the bacteria, virus and fungi were hybridized with these probes respectively prior to application for examination of the clinical samples.</p><p><strong>Results: </strong>The DNA probes of 263, 351, and 370 bp were amplified by PCR. Streptococcus pneumoniae and Haemophilus influenzae reacted only with their corresponding probes, and no cross reaction of the bacterial universal probe with virus and fungi was noted. The method could detect bacterial DNA in as small amount as 1 ng. Of the 100 sputum specimens, 11 were found to be positive for Streptococcus pneumoniae and 8 for Haemophilus influenzae, with a positivity rate greater than that by sputum culture.</p><p><strong>Conclusion: </strong>DNA probe detection is simple, rapid, and specific for clinical examination of Streptococcus pneumoniae and Haemophilus influenzae.</p>","PeriodicalId":11097,"journal":{"name":"Di 1 jun yi da xue xue bao = Academic journal of the first medical college of PLA","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"[Rapid detection of Streptococcus pneumoniae and Haemophilus influenzae with DNA probes].\",\"authors\":\"Hui-zhen Fan, Hua-peng Yu, Wen-jie Huang\",\"doi\":\"\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>To establish a method for rapid molecular detection of Streptococcus pneumoniae and Haemophilus influenzae in the early stage of infection.</p><p><strong>Methods: </strong>Specific DNA probes for Streptococcus pneumoniae and Haemophilus influenzae and 16 S rRNA universal probe of bacteria were synthesized by polymerase chain reaction (PCR) and labeled with biotin. The DNA of the bacteria, virus and fungi were hybridized with these probes respectively prior to application for examination of the clinical samples.</p><p><strong>Results: </strong>The DNA probes of 263, 351, and 370 bp were amplified by PCR. Streptococcus pneumoniae and Haemophilus influenzae reacted only with their corresponding probes, and no cross reaction of the bacterial universal probe with virus and fungi was noted. The method could detect bacterial DNA in as small amount as 1 ng. Of the 100 sputum specimens, 11 were found to be positive for Streptococcus pneumoniae and 8 for Haemophilus influenzae, with a positivity rate greater than that by sputum culture.</p><p><strong>Conclusion: </strong>DNA probe detection is simple, rapid, and specific for clinical examination of Streptococcus pneumoniae and Haemophilus influenzae.</p>\",\"PeriodicalId\":11097,\"journal\":{\"name\":\"Di 1 jun yi da xue xue bao = Academic journal of the first medical college of PLA\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2005-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Di 1 jun yi da xue xue bao = Academic journal of the first medical college of PLA\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Di 1 jun yi da xue xue bao = Academic journal of the first medical college of PLA","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
[Rapid detection of Streptococcus pneumoniae and Haemophilus influenzae with DNA probes].
Objective: To establish a method for rapid molecular detection of Streptococcus pneumoniae and Haemophilus influenzae in the early stage of infection.
Methods: Specific DNA probes for Streptococcus pneumoniae and Haemophilus influenzae and 16 S rRNA universal probe of bacteria were synthesized by polymerase chain reaction (PCR) and labeled with biotin. The DNA of the bacteria, virus and fungi were hybridized with these probes respectively prior to application for examination of the clinical samples.
Results: The DNA probes of 263, 351, and 370 bp were amplified by PCR. Streptococcus pneumoniae and Haemophilus influenzae reacted only with their corresponding probes, and no cross reaction of the bacterial universal probe with virus and fungi was noted. The method could detect bacterial DNA in as small amount as 1 ng. Of the 100 sputum specimens, 11 were found to be positive for Streptococcus pneumoniae and 8 for Haemophilus influenzae, with a positivity rate greater than that by sputum culture.
Conclusion: DNA probe detection is simple, rapid, and specific for clinical examination of Streptococcus pneumoniae and Haemophilus influenzae.
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