44 research outputs found
Untersuchungen von sigmatropen Umlagerungen: Thermische Umlagerung von 3-meta-substituierten Aryloxymethylcumarinen
Sequential therapy versus standard triple-drug therapy for Helicobacter pylori eradication: A randomized study
Efficacy and safety of sequential therapy versus standard triple therapy in Helicobacter pylori eradication in Kashmir India: a randomized comparative trial
Ground-State Versus Excited-State Polarity of Triafulvenes: A Study of Solvent Effects on Molecular Electronic Spectra[1]
Microbial communities and soil chemical features associated with commercial production of the medicinal mushroom Ganoderma lingzhi in soil
Unscheduled DNA synthesis: the clinical and functional assay for global genomic DNA nucleotide excision repair
The unscheduled DNA synthesis (UDS) assay measures the ability of a cell to perform global genomic nucleotide excision repair (NER). This chapter provides instructions for the application of this technique by creating 6-4 photoproducts and pyrimidine dimers using UV-C irradiation. This procedure is designed specifically for quantification of the 6-4 photoproducts. Repair is quantified by the amount of radioactive thymidine incorporated during repair synthesis after this insult, and radioactivity is evaluated by grain counting after autoradiography. The results are used to clinically diagnose human DNA repair deficiency disorders and provide a basis for investigation of repair deficiency in human tissues or tumors. No other functional assay is available that directly measures the capacity to perform NER on the entire genome without the use of specific antibodies. Since live cells are required for this assay, explant culture techniques must be previously established. Host cell reactivation (HCR), as discussed in Chapter 37, is not an equivalent technique, as it measures only transcription-coupled repair (TCR) at active genes, a small subset of total NER