ArticleScientific reports2019
Short- and medium-term impact of bariatric surgery on the activities of CYP2D6, CYP3A4, CYP2C9, and CYP1A2 in morbid obesity.
Article in Scientific reports, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers, 1 of them a synthesis that pooled it.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
28 citing papers in PubMed, 1 synthesis or guideline pooled it, 42 citations in OpenAlex.
- The effect of obesity, macronutrients, fasting and nutritional status on drug-metabolizing cytochrome P450s: a systematic review of current evidence on human studies.European journal of nutrition · 2021Pooled it
- Effect of Obesity on Pharmacokinetics of Lidocaine and its Active Metabolites in Chinese Patients Undergoing Laparoscopic Bariatric Surgery: A Prospective Clinical Study.Clinical pharmacokinetics · 2025Trial
- Short- and long-term effects of body weight, calorie restriction and gastric bypass on CYP1A2, CYP2C19 and CYP2C9 activity.British journal of clinical pharmacology · 2022Trial
- The Metabolomic Effects of Tripeptide Gut Hormone Infusion Compared to Roux-en-Y Gastric Bypass and Caloric Restriction.The Journal of clinical endocrinology and metabolism · 2022Trial
- Application of Virtual Twin PBPK Models in Individuals with Obesity via CYP3A4 Phenotyping Using Endogenous Biomarker Data.Clinical pharmacology and therapeutics · 2026Article
- Hepatic CYP1A2 Activity in Adolescents with and without Obesity Assessed by the Urinary Paraxanthine-to-Caffeine Metabolic Ratio: A Pharmacokinetic Study.Journal of clinical pharmacology · 2026Article
- Assessment of the Drug-Drug Interaction Potential of Lotiglipron (PF-07081532) with Midazolam, Omeprazole, Dabigatran, Rosuvastatin, and the Oral Contraceptives Levonorgestrel and Ethinyl Estradiol.Journal of clinical pharmacology · 2026Article
- Transforming Treatment: The Impact of Bariatric Surgery on Oral Drug Absorption.Obesity reviews : an official journal of the International Association for the Study of Obesity · 2026Review
- Dietary caffeine to assess CYP1A2 activity, tailor clozapine doses, and predict treatment response: genetic, epigenetic and clinical analyses.Molecular psychiatry · 2026Article
- Deconvoluting Gut Versus Liver Cytochrome P450 3A4 Function: Drug Probes, Biomarkers, and Tissue Biopsy.Journal of clinical pharmacology · 2026Review
- Obesity and Pharmacokinetic Variability: Implications for Cardiovascular Therapeutics.European cardiology · 2026Review
- Changes in Antidepressant Absorption After Metabolic Bariatric Surgery.Obesity surgery · 2025Article
- Apixaban plasma concentrations in patients with obesity.European journal of clinical pharmacology · 2024Article
- A guide to developing population files for physiologically-based pharmacokinetic modeling in the Simcyp Simulator.CPT: pharmacometrics & systems pharmacology · 2024Article
- Impact of obesity and roux-en-Y gastric bypass on the pharmacokinetics of (R)- and (S)-omeprazole and intragastric pH.CPT: pharmacometrics & systems pharmacology · 2024Article
- Impact of bariatric surgery on cytochrome P 450 enzyme activity.Frontiers in pharmacology · 2024Review
- Evaluation of factors affecting epidermal growth factor receptor tyrosine kinase inhibitor-induced hepatotoxicity in Japanese patients with non-small cell lung cancer: a two-center retrospective study.Journal of pharmaceutical health care and sciences · 2022Article
- Impact of type 2 diabetes on in vivo activities and protein expressions of cytochrome P450 in patients with obesity.Clinical and translational science · 2022Article
- Effect of Laparoscopic Sleeve Gastrectomy on the Pharmacokinetics of Oral Omeprazole Using a Population Approach.Pharmaceutics · 2022Article
- Obesity-related genomic instability and altered xenobiotic metabolism: possible consequences for cancer risk and chemotherapy.Expert reviews in molecular medicine · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Morbid obesity and bariatric surgery induce anatomical, physiological and metabolic alterations that may alter the body's disposition of drugs. Current literature on this topic is limited and sometimes inconsistent. Cytochrome P450 (CYP) is a superfamily of enzymes that metabolize around 75% of all marketed drugs. The purpose of this study was to evaluate the impact of body mass index and bariatric surgery on CYP activities. Firstly, we evaluated the in vivo activity of 4 major CYP isoenzymes (CYP2D6, CYP3A4, CYP2C9, and CYP1A2) in normal weight, overweight, and morbidly obese individuals. Secondly, we assessed the short- (1 month) and medium-term (6 month) effects of the most commonly employed bariatric surgery techniques (laparoscopic sleeve gastrectomy and Roux-en-Y gastric bypass) on the activity of these enzymes. CYP3A4 activity was lower in morbidly obese individuals, compared to normal-weight controls. Interestingly, bariatric surgery normalized CYP3A4 activity. In comparison with normal-weight controls, morbidly obese individuals had higher CYP2D6 activity, which was only observed in individuals with two functional alleles for this isoenzyme. Neither body mass index nor surgery had significant effects on CYP2C9 and CYP1A2 activities. Overall, no relevant differences in CYP activities were found between surgical techniques. In conclusion, further studies should evaluate whether the observed alterations in CYP3A4 activity will require dose adjustments for CYP3A4 substrates especially in morbidly obese individuals before and after bariatric surgery.
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Registered trials
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