实时聚合酶链反应
金黄色葡萄球菌
生物
基因
聚合酶链反应
基因表达
荧光染料
分子生物学
微生物学
遗传学
细菌
作者
V. Chini,Antigoni Foka,G. Dimitracopoulos,Iris Spiliopoulou
标识
DOI:10.1111/j.1472-765x.2007.02208.x
摘要
Absolute and relative quantitative real-time reverse transcriptase polymerase chain reaction (RT-PCR) by the use of two mathematical models were applied in order to study the expression of tst gene encoding the toxic shock syndrome toxin-1 (TSST-1), among methicillin-resistant Staphylococcus aureus (MRSA).Thirteen epidemic MRSA belonging to different clones and carrying a variety of toxin genes were selected. tst gene expression was achieved by using absolute and relative quantitative real-time RT-PCR and the SYBR Green I. Absolute RT-PCR showed a statistically significant higher level of tst expression among strains isolated from soft tissue infections. Relative quantification was performed in relation to 23S rRNA expression by the application of two mathematical models, the 2(-DeltaDeltaCt) and the Pfaffl analysis methods.tst gene expression was best calculated by the relative real-time RT-PCR analysis applying the Pfaffl analysis method, taking into account the reactions' efficiencies. Level of tst expression was related to patients' infection and did not depend on the MRSA genetic profile.The results indicate that the application of the Pfaffl analysis method in the evaluation of relative real-time RT-PCR is more adequate.
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