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Secondhand smoke (SHS) exposure is a known risk factor for lung cancer in lifelong nonsmokers. However, the underlying mechanism of action of SHS in lung carcinogenesis remains elusive. We have investigated, using the 32 P-postlabeling assay, the genotoxic potential of SHS in vivo by determining the formation and kinetics of repair of DNA adducts in the lungs of mice exposed whole body to...
Formation of DNA damage is a crucial event in carcinogenesis. Irreparable DNA lesions have the potential to cause mispairing during DNA replication, thereby giving rise to mutations. Critically important mutations in cancer-related genes, i.e., oncogenes and tumor suppressor genes, are key contributors to carcinogenesis. Theoretically, co-localization(s) of persistent DNA lesions and mutational hotspots...
This review article summarizes our current knowledge on DNA damaging and mutagenic properties of acrylamide. Direct and indirect modes of interaction of acrylamide with DNA are discussed, and the resulting alkylating DNA adducts are highlighted. Emphasis is placed on glycidamide-DNA adducts generated via epoxidation of acrylamide presumably by cytochrome P4502E1. Dosimetry and mapping of acrylamide-induced...
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