Filters: Tags: caffeine (X)11 results (138ms)
Changes in cytochrome P4501A activity during development in common tern chicks fed polychlorinated biphenyls, as measured by the caffeine breath test
Phase III interlaboratory study of FETAX, part 2: Interlaboratory validation of an exogenous metabolic activation system for Frog Embryo Teratogenesis Assay--Xenopus (FETAX)
Biotransformation of caffeine, cotinine, and nicotine in stream sediments: implications for use as wastewater indicators
Microbially catalyzed cleavage of the imadazole ring of caffeine was observed in stream sediments collected upstream and downstream of municipal wastewater treatment plants (WWTP) in three geographically separate stream systems. Microbial demethylation of the N-methyl component of cotinine and its metabolic precursor, nicotine, also was observed in these sediments. These findings indicate that stream sediment microorganisms are able to substantially alter the chemical structure and thus the analytical signatures of these candidate waste indicator compounds. The potential for in situ biotransformation must be considered if these compounds are employed as markers to identify the sources and track the fate of wastewater...
Relationship between polychlorinated biphenyl 126 treatment and cytochrome P4501A activity in chickens, as measured by in vivo caffeine and ex vivo ethoxyresorufin metabolism
Effects of procaine and caffeine on calcium release from the sarcoplasmic reticulum in frog skeletal muscle.