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Weinberg L, Scurrah N, Neal-Williams T, Zhang W, Chen S, Slifirski H, Liu DS, Armellini A, Aly A, Clough A, Lee DK. The transit of oral premedication beyond the stomach in patients undergoing laparoscopic sleeve gastrectomy: a retrospective observational multicentre study. BMC Surg 2023; 23:335. [PMID: 37924061 PMCID: PMC10625241 DOI: 10.1186/s12893-023-02246-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 10/21/2023] [Indexed: 11/06/2023] Open
Abstract
BACKGROUND Antiemetic and analgesic oral premedications are frequently prescribed preoperatively to enhance recovery after laparoscopic sleeve gastrectomy. However, it is unknown whether these medications transit beyond the stomach or if they remain in the sleeve resection specimen, thereby negating their pharmacological effects. METHODS A retrospective cohort study was performed on patients undergoing laparoscopic sleeve gastrectomy and receiving oral premedication (slow-release tapentadol and netupitant/palonosetron) as part of enhanced recovery after bariatric surgery program. Patients were stratified into the Transit group (premedication absent in the resection specimen) and Failure-to-Transit group (premedication present in the resection specimen). Age, sex, body mass index, and presence of diabetes were compared amongst the groups. The premedication lead time (time between premedications' administration and gastric specimen resection), and the premedication presence or absence in the specimen was evaluated. RESULTS One hundred consecutive patients were included in the analysis. Ninety-nine patients (99%) were morbidly obese, and 17 patients (17%) had Type 2 diabetes mellitus. One hundred patients (100%) received tapentadol and 89 patients (89%) received netupitant/palonosetron. One or more tablets were discovered in the resected specimens of 38 patients (38%). No statistically significant differences were observed between the groups regarding age, sex, diabetes, or body mass index. The median (Q1‒Q3) premedication lead time was 80 min (57.8‒140.0) in the Failure-to-Transit group and 119.5 min (85.0‒171.3) in the Transit group; P = 0.006. The lead time required to expect complete absorption in 80% of patients was 232 min (95%CI:180‒310). CONCLUSIONS Preoperative oral analgesia and antiemetics did not transit beyond the stomach in 38% of patients undergoing laparoscopic sleeve gastrectomy. When given orally in combination, tapentadol and netupitant/palonosetron should be administered at least 4 h before surgery to ensure transition beyond the stomach. Future enhanced recovery after bariatric surgery guidelines may benefit from the standardization of premedication lead times to facilitate increased absorption. TRIAL REGISTRATION Australian and New Zealand Clinical Trials Registry; number ACTRN12623000187640; retrospective registered on 22/02/2023.
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Affiliation(s)
- Laurence Weinberg
- Department of Anesthesia, Austin Health, Heidelberg, Australia.
- Department of Critical Care, The University of Melbourne, Austin Health, Heidelberg, Australia.
| | - Nick Scurrah
- Department of Anesthesia, Austin Health, Heidelberg, Australia
| | | | - Wendell Zhang
- Department of Anesthesia, Austin Health, Heidelberg, Australia
| | - Sharon Chen
- Department of Anesthesia, Austin Health, Heidelberg, Australia
| | - Hugh Slifirski
- Department of Anesthesia, Austin Health, Heidelberg, Australia
| | - David S Liu
- Department of Surgery, Austin Health, University of Melbourne, Heidelberg, Australia
- General and Gastrointestinal Surgery Research Group, The University of Melbourne, Austin Precinct, Heidelberg, Australia
- Division of Cancer Surgery, Peter MacCallum Cancer Centre, Parkville, Australia
| | | | - Ahmad Aly
- Department of Surgery, Austin Health, University of Melbourne, Heidelberg, Australia
| | - Anthony Clough
- Department of Surgery, Box Hill Hospital, Box Hill, Australia
- Melbourne Centre for Bariatric Surgery, Melbourne, Australia
| | - Dong-Kyu Lee
- Department of Anesthesiology and Pain Medicine, Dongguk University Ilsan Hospital, Goyang, Republic of Korea
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Zamboni WC, Charlab R, Burckart GJ, Stewart CF. Effect of Obesity on the Pharmacokinetics and Pharmacodynamics of Anticancer Agents. J Clin Pharmacol 2023; 63 Suppl 2:S85-S102. [PMID: 37942904 DOI: 10.1002/jcph.2326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/12/2023] [Indexed: 11/10/2023]
Abstract
An objective of the Precision Medicine Initiative, launched in 2015 by the US Food and Drug Administration and National Institutes of Health, is to optimize and individualize dosing of drugs, especially anticancer agents, with high pharmacokinetic and pharmacodynamic variability. The American Society of Clinical Oncology recently reported that 40% of obese patients receive insufficient chemotherapy doses and exposures, which may lead to reduced efficacy, and recommended pharmacokinetic studies to guide appropriate dosing in these patients. These issues will only increase in importance as the incidence of obesity in the population increases. This publication reviews the effects of obesity on (1) tumor biology, development of cancer, and antitumor response; (2) pharmacokinetics and pharmacodynamics of small-molecule anticancer drugs; and (3) pharmacokinetics and pharmacodynamics of complex anticancer drugs, such as carrier-mediated agents and biologics. These topics are not only important from a scientific research perspective but also from a drug development and regulator perspective. Thus, it is important to evaluate the effects of obesity on the pharmacokinetics and pharmacodynamics of anticancer agents in all categories of body habitus and especially in patients who are obese and morbidly obese. As the effects of obesity on the pharmacokinetics and pharmacodynamics of anticancer agents may be highly variable across drug types, the optimal dosing metric and algorithm for difference classes of drugs may be widely different. Thus, studies are needed to evaluate current and novel metrics and methods for measuring body habitus as related to optimizing the dose and reducing pharmacokinetic and pharmacodynamic variability of anticancer agents in patients who are obese and morbidly obese.
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Affiliation(s)
- William C Zamboni
- UNC Eshelman School of Pharmacy, UNC Lineberger Comprehensive Cancer Center, Caroline Institute of Nanomedicine, University of North Carolina, Chapel Hill, NC, USA
| | - Rosane Charlab
- Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Gilbert J Burckart
- Office of Clinical Pharmacology, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
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Pan X, Wang L, Liu J, Earp JC, Yang Y, Yu J, Li F, Bi Y, Bhattaram A, Zhu H. Model-Informed Approaches to Support Drug Development for Patients With Obesity: A Regulatory Perspective. J Clin Pharmacol 2023; 63 Suppl 2:S65-S77. [PMID: 37942906 DOI: 10.1002/jcph.2349] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 09/13/2023] [Indexed: 11/10/2023]
Abstract
Obesity, which is defined as having a body mass index of 30 kg/m2 or greater, has been recognized as a serious health problem that increases the risk of many comorbidities (eg, heart disease, stroke, and diabetes) and mortality. The high prevalence of individuals who are classified as obese calls for additional considerations in clinical trial design. Nevertheless, gaining a comprehensive understanding of how obesity affects the pharmacokinetics (PK), pharmacodynamics (PD), and efficacy of drugs proves challenging, primarily as obese patients are seldom selected for enrollment at the early stages of drug development. Over the past decade, model-informed drug development (MIDD) approaches have been increasingly used in drug development programs for obesity and its related diseases as they use and integrate all available sources and knowledge to inform and facilitate clinical drug development. This review summarizes the impact of obesity on PK, PD, and the efficacy of drugs and, more importantly, provides an overview of the use of MIDD approaches in drug development and regulatory decision making for patients with obesity: estimating PK, PD, and efficacy in specific dosing scenarios, optimizing dose regimen, and providing evidence for seeking new indication(s). Recent review cases using MIDD approaches to support dose selection and provide confirmatory evidence for effectiveness for patients with obesity, including pediatric patients, are discussed. These examples demonstrate the promise of MIDD as a valuable tool in supporting clinical trial design during drug development and facilitating regulatory decision-making processes for the benefit of patients with obesity.
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Affiliation(s)
- Xiaolei Pan
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Li Wang
- Division of Cardiometabolic and Endocrine Pharmacology, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Jiang Liu
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Justin C Earp
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Yuching Yang
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Jingyu Yu
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Fang Li
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Youwei Bi
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Atul Bhattaram
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
| | - Hao Zhu
- Division of Pharmacometrics, Office of Clinical Pharmacology, Office of Translational Sciences, Center for Drug Evaluation and Research, US Food and Drug Administration, Silver Spring, MD, USA
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Chen X, Yu G, Li GF. Use of Clearance Concepts to Simulate Impact of Interleukin-6 on Drug Elimination Governed by Cytochromes P450 3A4 and Glomerular Filtration Rate. Eur J Drug Metab Pharmacokinet 2023; 48:619-621. [PMID: 37792131 DOI: 10.1007/s13318-023-00859-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2023] [Indexed: 10/05/2023]
Affiliation(s)
- Xiang Chen
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, China
| | - Guo Yu
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, China
| | - Guo-Fu Li
- School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 211198, Jiangsu, China.
- Subei People's Hospital, Yangzhou, China.
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Gouju J, Legeay S. Pharmacokinetics of obese adults: Not only an increase in weight. Biomed Pharmacother 2023; 166:115281. [PMID: 37573660 DOI: 10.1016/j.biopha.2023.115281] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 08/04/2023] [Indexed: 08/15/2023] Open
Abstract
Obesity is a pathophysiological state defined by a body mass index > 30 kg/m2 and characterized by an adipose tissue accumulation leading to an important weight increased. Several pathologies named comorbidities such as cardiovascular disease, type 2 diabetes and cancer make obesity the fifth cause of death in the world. Physiological changes impact the four main phases of pharmacokinetics of some drugs and leads to an inappropriate drug-dose. For absorption, the gastrointestinal transit is accelerated, and the gastric empty time is shortened, that can reduce the solubilization and absorption of some oral drugs. The drug distribution is probably the most impacted by the obesity-related changes because the fat mass (FM) increases at the expense of the lean body weight (LBW), leading to an important increase of the volume of distribution for lipophilic drugs and a low or moderately increase of this parameter for hydrophilic drugs. This modification of the distribution may require drug-dose adjustments. By various mechanisms, the metabolism and elimination of drugs are impacted by obesity and should be considered as similar or lower than that non-obese patients. To better understand the necessary drug-dose adjustments in obese patients, a narrative review of the literature was conducted to highlight the main elements to consider in the therapeutic management of adult obese patients.
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Affiliation(s)
- Julien Gouju
- MINT, INSERM U1066, CNRS 6021, UNIV Angers, SFR-ICAT 4208, IBS-CHU Angers, 4 rue Larrey, Angers 49933 Cedex 9, France; CHU Angers, 4 rue Larrey, Angers 49933 Cedex 9, France.
| | - Samuel Legeay
- MINT, INSERM U1066, CNRS 6021, UNIV Angers, SFR-ICAT 4208, IBS-CHU Angers, 4 rue Larrey, Angers 49933 Cedex 9, France
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Královičová J, Bartůněk A, Hofmann J, Křížek T, Kozlík P, Roušarová J, Ryšánek P, Šíma M, Slanař O. Pharmacokinetic Variability in Pre-Clinical Studies: Sample Study with Abiraterone in Rats and Implications for Short-Term Comparative Pharmacokinetic Study Designs. Pharmaceutics 2022; 14:pharmaceutics14030643. [PMID: 35336017 PMCID: PMC8955109 DOI: 10.3390/pharmaceutics14030643] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 03/09/2022] [Accepted: 03/13/2022] [Indexed: 02/06/2023] Open
Abstract
One of the major concerns for all in vivo experiments is intra- and inter-subject variability, which can be a great source of inaccuracy. The aim of this study is, therefore, to estimate the ability of parallel vs. cross-over design studies in order to describe the relative pharmacokinetic performance of the studied drug formulations. We analyzed the data from a drug development program that examined the performance of innovative abiraterone acetate formulations against the identical reference product in three stages. In stages 1–3, groups A–F were dosed with the reference product once in a parallel manner. Stage 4 was performed to evaluate the intra-individual variability (IIV) by repeated administration of the reference product to the same animals. Although the geometric mean (90% CI) values of abiraterone AUClast in groups A–F were similar to the IIV group (24.36 (23.79–41.00) vs. 26.29 (20.56–47.00) mg/mL·min·g), the results generated in the isolated parallel groups provided imprecise estimates of the true AUClast values ranging from 9.62 to 44.62 mg/mL·min·g due to chance. Notably, in 4 out of 15 possible pair comparisons between the parallel groups, the confidence intervals did not include 100%, which is the true ratio for all comparisons tested after identical formulation administration to all groups. A cross-over design can significantly improve the methodology in short-term comparative pre-clinical pharmacokinetic studies, and can provide more precise and accurate results in comparison to more traditional pre-clinical study designs.
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Affiliation(s)
- Jana Královičová
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Albertov 4, 12800 Prague, Czech Republic; (A.B.); (J.R.); (P.R.); (M.Š.); (O.S.)
- Correspondence:
| | - Aleš Bartůněk
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Albertov 4, 12800 Prague, Czech Republic; (A.B.); (J.R.); (P.R.); (M.Š.); (O.S.)
| | - Jiří Hofmann
- Zentiva k.s., U Kabelovny 130, 10237 Prague, Czech Republic;
| | - Tomáš Křížek
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 12800 Prague, Czech Republic; (T.K.); (P.K.)
| | - Petr Kozlík
- Department of Analytical Chemistry, Faculty of Science, Charles University, Hlavova 8, 12800 Prague, Czech Republic; (T.K.); (P.K.)
| | - Jaroslava Roušarová
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Albertov 4, 12800 Prague, Czech Republic; (A.B.); (J.R.); (P.R.); (M.Š.); (O.S.)
| | - Pavel Ryšánek
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Albertov 4, 12800 Prague, Czech Republic; (A.B.); (J.R.); (P.R.); (M.Š.); (O.S.)
| | - Martin Šíma
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Albertov 4, 12800 Prague, Czech Republic; (A.B.); (J.R.); (P.R.); (M.Š.); (O.S.)
| | - Ondřej Slanař
- Department of Pharmacology, First Faculty of Medicine, Charles University and General University Hospital in Prague, Albertov 4, 12800 Prague, Czech Republic; (A.B.); (J.R.); (P.R.); (M.Š.); (O.S.)
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