Metabolism and mechanism of human cytochrome P450 enzyme 1A2

J Guo, X Zhu, S Badawy, A Ihsan, Z Liu… - Current Drug …, 2021 - ingentaconnect.com
… The interaction between tizanidine and CYP1A2 inhibitors has … Studies have also shown
that furafylline reduces caffeine … and explored the inhibitory effect of rofecoxib on CYP1A2. The …

Physiologically based pharmacokinetic modeling of altered tizanidine systemic exposure by CYP1A2 modulation: impact of drug-drug interactions and cigarette …

VK Jogiraju, T Heimbach, Y Toderika, DR Taft - Drug Metabolism and …, 2021 - Elsevier
Tizanidine is more sensitive than caffeine and theophylline as a probe substrate for … time
profile for tizanidine (upper panel) and rofecoxib (lower panel) in healthy volunteers. Included in …

[HTML][HTML] Drug–drug interactions involving intestinal and hepatic CYP1A enzymes

F Klomp, C Wenzel, M Drozdzik, S Oswald - Pharmaceutics, 2020 - mdpi.com
… So far, only one study from our group is available that … , ethinyl estradiol, and rofecoxib. Their
combination with … 5–15 days reduced serum AUC of caffeine and tizanidine by 50–60% [64,…

A disproportionality analysis of drug–drug interactions of tizanidine and CYP1A2 inhibitors from the FDA adverse event reporting system (FAERS)

L Villa-Zapata, A Gómez-Lumbreras, J Horn, MS Tan… - Drug Safety, 2022 - Springer
Tizanidine is primarily metabolized via cytochrome P450 (… to CYP1A2 inhibitors, illicit drugs,
cigarette smoke, and coffee, … terms, and this study showed that rofecoxib was associated with …

Evaluation of the effect of ritlecitinib on the pharmacokinetics of caffeine in healthy participants

J Liu, R Solan, R Wolk, A Plotka… - British Journal of …, 2023 - Wiley Online Library
… a time-dependent inhibition of cytochrome P450 1A2 (CYP1A2). • … dose of caffeine used in
this study is considered safe and it is … [27] estimated rofecoxib’s effect on theophylline (another …

Risk of tizanidine-induced adverse events after concomitant exposure to ciprofloxacin: A cohort study in the US

TV Giannouchos, A Gómez-Lumbreras… - The American Journal of …, 2022 - Elsevier
… of tizanidine with a potent inhibitor of the cytochrome P-450 1A2 (CYP1A2) enzyme can …
Both of the studied cohorts were mainly healthy patients as over half of them had an Elixhauser …

Mass Spectrometric Methods for Evaluation of Voriconazole Avian Pharmacokinetics and the Inhibition of its Cytochrome P450-induced Metabolism

AF Lehner, SD Johnson, L Dirikolu… - Toxicology …, 2024 - Taylor & Francis
… by CYP1A2 in manners similar to tizanidine, for example. Schulz, … is a powerful demethylase
for caffeine, and in humans, … CYP targets of the inhibitors studied during this research. Bold …

Understanding interindividual variability in the drug interaction of a highly extracted CYP1A2 substrate tizanidine: application of a permeability-limited …

M Zhang, C Fisher, I Gardner, X Pan, P Kilford… - Drug Metabolism and …, 2022 - ASPET
… , it was observed that the subjects in this study were associated with … ) Rofecoxib is a potent
inhibitor of cytochrome P450 1A2: studies with tizanidine and caffeine in healthy subjects. Br …

[HTML][HTML] Neuroprotective effects of coffee bioactive compounds: a review

K Socała, A Szopa, A Serefko, E Poleszak… - International journal of …, 2020 - mdpi.com
… Several cytochrome P450 (CYP) isoforms are implicated in caffeine … 74 patients with
Alzheimer’s disease and 72 healthy subjects … This study showed that caffeine intake was inversely …

Assessment of the CYP1A2 Inhibition-Mediated Drug Interaction Potential for Pinocembrin Using In Silico, In Vitro, and In Vivo Approaches

S Bhatt, S Dhiman, V Kumar, A Gour, D Manhas… - ACS …, 2022 - ACS Publications
… drugs, namely, caffeine and tacrine. In conclusion, pinocembrin has a … Rofecoxib
increased the plasma concentration of the CYP1A2 substrate tizanidine by 13.6-fold in humans