Mbark Sadouk

Saint Joseph University, Lebanon, Beyrouth, Beyrouth, Lebanon

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Publications (1)0.92 Total impact

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    ABSTRACT: Tumor necrosis factor (TNF)-alpha plays a significant role in the pathogenesis of several inflammatory conditions. Several studies confirmed high TNF-alpha plasma protein levels in such conditions and highlighted the utility of TNF-alpha as a biomarker for disease progression or response to biological therapy. We aimed to provide a novel molecular technique for the measurement of TNF-alpha. Quantitative assay for the measurement of TNF-alpha messenger ribonucleic acid (mRNA) was done using real time reverse transcription polymerase chain reaction (RT-PCR). The test was specific, sensitive, and efficient and possessed a wide scale of linearity. Intrassay and interassay CVs were equivalent to those observed in enzyme-linked immunosorbent assay methods for plasmatic TNF-alpha. Data from 11 healthy adults recruited in an attempt to establish reference values showed an average of 109.4 ng of U937 RNA (range: 67.0 - 173.5). Circulating TNF-alpha protein was not detected by ELISA in any of the 11 subjects. The test may be useful for clinical studies and in research investigating TNF-alpha gene expression both in physiologic and pathologic situations, although these pilot findings need to be confirmed through larger studies.
    Clinical laboratory 01/2011; 57(9-10):799-802. · 0.92 Impact Factor