1-methylxanthine has been researched along with 1,7-dimethyluric acid in 12 studies
| Timeframe | Studies, this research(%) | All Research% |
|---|---|---|
| pre-1990 | 1 (8.33) | 18.7374 |
| 1990's | 3 (25.00) | 18.2507 |
| 2000's | 5 (41.67) | 29.6817 |
| 2010's | 3 (25.00) | 24.3611 |
| 2020's | 0 (0.00) | 2.80 |
| Authors | Studies |
|---|---|
| Campbell, ME; Kalow, W; Spielberg, SP | 1 |
| Galteau, MM; Gueguen, R; Pontes, ZB; Siest, G; Vincent-Viry, M | 1 |
| Bernal, ML; Fanlo, A; Juste, JL; Lanuza, J; Mayayo, E; Sáenz, MA; Sinués, B | 1 |
| Cao, XM; Ling, SS; Lu, JF; Yi, T; Zhuo, HT | 1 |
| Crews, HM; Olivier, L; Wilson, LA | 1 |
| Li, J; Peng, XQ; Xu, JP; Zhang, J | 1 |
| Brüning, T; John, A; Rihs, HP; Scherenberg, M; Seidel, A | 1 |
| Brøsen, K; Damkier, P; Grandjean, P; Halling, J; Nielsen, F; Petersen, MS; Weihe, P | 1 |
| Asprodini, EK; Begas, E; Kouvaras, E; Papakosta, S; Tsakalof, A | 1 |
| Kamataki, T; Kimura, M; Kiyotani, K; Nakagawa, K; Shimizu, M; Yamazaki, H | 1 |
| Ahluwalia, N; Pao, CI; Pfeiffer, CM; Rybak, ME; Sternberg, MR | 1 |
| Kishimoto, I; Kobayashi, K; Murayama, N; Shimizu, M; Yamazaki, H | 1 |
2 trial(s) available for 1-methylxanthine and 1,7-dimethyluric acid
| Article | Year |
|---|---|
Urinary biomarkers for assessing dietary exposure to caffeine.
Topics: Adult; Arylamine N-Acetyltransferase; Biomarkers; Caffeine; Cytochrome P-450 CYP1A2; Diet; Female; Humans; Liver; Male; Middle Aged; Phenotype; Theophylline; Time Factors; Uric Acid; Xanthines | 2001 |
Cytochrome P450 2A6 phenotyping based on dietary caffeine intake in a Japanese population of non-smokers.
Topics: Adult; Aryl Hydrocarbon Hydroxylases; Caffeine; Cytochrome P-450 CYP2A6; Female; Gene Deletion; Genotype; Humans; Japan; Male; Phenotype; Pilot Projects; Theophylline; Uric Acid; Xanthines; Young Adult | 2012 |
10 other study(ies) available for 1-methylxanthine and 1,7-dimethyluric acid
| Article | Year |
|---|---|
A urinary metabolite ratio that reflects systemic caffeine clearance.
Topics: Adult; Age Factors; Asian People; Caffeine; Child; Child, Preschool; Contraceptives, Oral; Cytochrome P-450 Enzyme System; Female; Humans; Kinetics; Male; Metabolic Clearance Rate; Middle Aged; Smoking; Time Factors; Uracil; Uric Acid; White People; Xanthines | 1987 |
Segregation analyses of four urinary caffeine metabolite ratios implicated in the determination of human acetylation phenotypes.
Topics: Acetylation; Adolescent; Adult; Alleles; Arylamine N-Acetyltransferase; Caffeine; Child; Chromatography, High Pressure Liquid; Family; Female; Gene Frequency; Genes, Recessive; Humans; Male; Middle Aged; Models, Genetic; Models, Statistical; Phenotype; Polymorphism, Genetic; Theophylline; Uracil; Uric Acid; Xanthines | 1994 |
Five caffeine metabolite ratios to measure tobacco-induced CYP1A2 activity and their relationships with urinary mutagenicity and urine flow.
Topics: Adolescent; Adult; Caffeine; Central Nervous System Stimulants; Cytochrome P-450 CYP1A2; Environmental Exposure; Female; Follow-Up Studies; Humans; Male; Middle Aged; Mutagens; Rheology; Smoking; Theophylline; Time Factors; Uracil; Uric Acid; Urination; Xanthines | 1999 |
[Determination of caffeine metabolite for the evaluation of N-acetyltransferase, CYP1A2 and xanthine oxidase activities].
Topics: Adolescent; Adult; Aged; Arylamine N-Acetyltransferase; Caffeine; Chromatography, High Pressure Liquid; Cytochrome P-450 CYP1A2; Female; Humans; Male; Middle Aged; Theophylline; Uracil; Uric Acid; Xanthine Oxidase; Xanthines | 1997 |
[Determination of the activity of cytochrome P-450 CYP2A6 by HPLC method with caffeine as metabolizing probe].
Topics: Adult; Aryl Hydrocarbon Hydroxylases; Caffeine; Chromatography, High Pressure Liquid; Cytochrome P-450 CYP2A6; Female; Humans; Male; Mixed Function Oxygenases; Theophylline; Uracil; Uric Acid; Xanthines | 2006 |
Concordance between the deduced acetylation status generated by high-speed: real-time PCR based NAT2 genotyping of seven single nucleotide polymorphisms and human NAT2 phenotypes determined by a caffeine assay.
Topics: Acetylation; Adult; Arylamine N-Acetyltransferase; Biotransformation; Caffeine; Genotype; Humans; Male; Middle Aged; Phenotype; Polymerase Chain Reaction; Polymorphism, Single Nucleotide; Uracil; Uric Acid; White People; Xanthines | 2007 |
Caffeine N3-demethylation (CYP1A2) in a population with an increased exposure to polychlorinated biphenyls.
Topics: Administration, Oral; Adolescent; Adult; Biometry; Caffeine; Cohort Studies; Cytochrome P-450 CYP1A2; Environmental Pollutants; Female; Genotype; Humans; Male; Methylation; Middle Aged; Polychlorinated Biphenyls; Sex Factors; Smoking; Uracil; Uric Acid; Xanthines | 2006 |
In vivo evaluation of CYP1A2, CYP2A6, NAT-2 and xanthine oxidase activities in a Greek population sample by the RP-HPLC monitoring of caffeine metabolic ratios.
Topics: Adult; Aryl Hydrocarbon Hydroxylases; Arylamine N-Acetyltransferase; Caffeine; Chromatography, High Pressure Liquid; Cytochrome P-450 CYP1A2; Cytochrome P-450 CYP2A6; Female; Humans; Male; Middle Aged; Mixed Function Oxygenases; Reproducibility of Results; Sensitivity and Specificity; Smoking; Theophylline; Uracil; Uric Acid; Xanthine Oxidase; Xanthines | 2007 |
Urine excretion of caffeine and select caffeine metabolites is common in the U.S. population and associated with caffeine intake.
Topics: Adolescent; Adult; Biomarkers; Black or African American; Caffeine; Child; Chromatography, Liquid; Cross-Sectional Studies; Female; Hispanic or Latino; Humans; Male; Middle Aged; Nutrition Surveys; Tandem Mass Spectrometry; Theophylline; Uracil; Uric Acid; White People; Xanthines; Young Adult | 2015 |
Cytochrome P450 2A6 Phenotyping Using Dietary Caffeine Salivary Metabolite Ratios and Genotyping Using Blood on Storage Cards in Non-smoking Japanese Volunteers.
Topics: Adult; Caffeine; Chromatography, High Pressure Liquid; Cytochrome P-450 CYP2A6; Diet; Female; Genotyping Techniques; Healthy Volunteers; Humans; Male; Middle Aged; Multiplex Polymerase Chain Reaction; Phenotype; Real-Time Polymerase Chain Reaction; Saliva; Specimen Handling; Tea; Uric Acid; Xanthines | 2017 |