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Bagher AM, Hareeri RH. Allele frequency and genotype distribution of the opioid receptor μ-1 (OPRM1) A118G polymorphism in the Western Saudi population. J Appl Biomed 2023; 21:160-165. [PMID: 37747315 DOI: 10.32725/jab.2023.012] [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: 10/25/2022] [Accepted: 09/14/2023] [Indexed: 09/26/2023] Open
Abstract
The single nucleotide polymorphism (SNP) A118G (rs1799971) in the Mu Opioid Receptor 1 (OPRM1) gene is associated with significant variations in analgesic doses and adverse effects of opioids. The A118G OPRM1 allele distributions vary significantly between different populations worldwide. The study aimed to assess the allele frequency and genotype distribution of OPRM1 A118G SNP in Saudis. This cross-sectional study included 124 healthy Saudis (62 males and 62 females) visiting the King Abdulaziz University Hospital in Jeddah, Saudi Arabia. The Oragene®-DISCOVER (OGR-600) kits were used to collect saliva samples from the participants. Polymerase chain reaction-restriction fragment length polymorphism was utilized to assess the SNP. Among the tested population, 79.03% (95% C.I. 70.81-85.82) were homozygous wild-type A118A, 16.13% (95% C.I. 10.14-23.80) were heterozygous A118G, and 4.84% (95% C.I. 1.80-10.23) were homozygous mutant G118G. OPRM1 A118G polymorphism allele frequencies were 87% (95% C.I. 79.89-92.44) and 13% (95% C.I. 7.56-20.11) for the 118A and 118G alleles, respectively. A higher frequency of the OPRM1 118G allele was present in females, 21% (95% C.I. 11.66-33.17) compared to males, 5% (95% C.I. 1.01-13.50). Relative to other Asian countries, the Saudi population showed a low prevalence of the OPRM1 A118G polymorphism, with a higher frequency of the 118G allele in females. Our research will contribute to the existing knowledge on the prevalence of OPRM1 A118G polymorphism, which could be considered for the personalized prescribing of opioid analgesics.
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Affiliation(s)
- Amina M Bagher
- King AbdulAziz University, Faculty of Pharmacy, Department of Pharmacology and Toxicology, Jeddah, Saudi Arabia
| | - Rawan H Hareeri
- King AbdulAziz University, Faculty of Pharmacy, Department of Pharmacology and Toxicology, Jeddah, Saudi Arabia
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2
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Shannon ML, Muhammad A, James NT, Williams ML, Breeyear J, Edwards T, Mosley JD, Choi L, Kannankeril P, Van Driest S. Variant-based heritability assessment of dexmedetomidine and fentanyl clearance in pediatric patients. Clin Transl Sci 2023; 16:1628-1638. [PMID: 37353859 PMCID: PMC10499425 DOI: 10.1111/cts.13574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 04/12/2023] [Accepted: 06/01/2023] [Indexed: 06/25/2023] Open
Abstract
Despite complex pathways of drug disposition, clinical pharmacogenetic predictors currently rely on only a few high effect variants. Quantification of the polygenic contribution to variability in drug disposition is necessary to prioritize target drugs for pharmacogenomic approaches and guide analytic methods. Dexmedetomidine and fentanyl, often used in postoperative care of pediatric patients, have high rates of inter-individual variability in dosing requirements. Analyzing previously generated population pharmacokinetic parameters, we used Bayesian hierarchical mixed modeling to measure narrow-sense (additive) heritability (h SNP 2 ) of dexmedetomidine and fentanyl clearance in children and identify relative contributions of small, moderate, and large effect-size variants toh SNP 2 . We used genome-wide association studies (GWAS) to identify variants contributing to variation in dexmedetomidine and fentanyl clearance, followed by functional analyses to identify associated pathways. For dexmedetomidine, median clearance was 33.0 L/h (interquartile range [IQR] 23.8-47.9 L/h) andh SNP 2 was estimated to be 0.35 (90% credible interval 0.00-0.90), with 45% ofh SNP 2 attributed to large-, 32% to moderate-, and 23% to small-effect variants. The fentanyl cohort had median clearance of 8.2 L/h (IQR 4.7-16.7 L/h), with estimatedh SNP 2 of 0.30 (90% credible interval 0.00-0.84). Large-effect variants accounted for 30% ofh SNP 2 , whereas moderate- and small-effect variants accounted for 37% and 33%, respectively. As expected, given small sample sizes, no individual variants or pathways were significantly associated with dexmedetomidine or fentanyl clearance by GWAS. We conclude that clearance of both drugs is highly polygenic, motivating the future use of polygenic risk scores to guide appropriate dosing of dexmedetomidine and fentanyl.
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Affiliation(s)
| | - Ayesha Muhammad
- School of MedicineVanderbilt UniversityNashvilleTennesseeUSA
| | - Nathan T. James
- Department of BiostatisticsVanderbilt University Medical CenterNashvilleTennesseeUSA
- Present address:
Berry Consultants, LLCAustinTexasUSA
| | - Michael L. Williams
- Department of BiostatisticsVanderbilt University Medical CenterNashvilleTennesseeUSA
- Present address:
Department of Clinical Pharmacology and Quantitative PharmacologyAstraZenecaGothenburgSweden
| | - Joseph Breeyear
- Department of MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Todd Edwards
- Department of MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Jonathan D. Mosley
- Department of MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
- Department of Biomedical InformaticsVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Leena Choi
- Department of BiostatisticsVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Prince Kannankeril
- Center for Pediatric Precision Medicine, Department of PediatricsVanderbilt University Medical CenterNashvilleTennesseeUSA
| | - Sara Van Driest
- Department of MedicineVanderbilt University Medical CenterNashvilleTennesseeUSA
- Center for Pediatric Precision Medicine, Department of PediatricsVanderbilt University Medical CenterNashvilleTennesseeUSA
- Present address:
All of Us Research ProgramNational Institutes of HealthWashingtonDCUSA
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3
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Li P, Yu Q, Nie H, Yin C, Liu B. IL-33/ST2 signaling in pain and itch: Cellular and molecular mechanisms and therapeutic potentials. Biomed Pharmacother 2023; 165:115143. [PMID: 37450998 DOI: 10.1016/j.biopha.2023.115143] [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: 05/23/2023] [Revised: 06/28/2023] [Accepted: 07/07/2023] [Indexed: 07/18/2023] Open
Abstract
Pain is a cardinal feature of many diseases. Chronic pain poses heavy burdens to the suffering patients, both physically and mentally. However, current mainstream medications for chronic pain, including opioids, antidepressants and non-steroid anti-inflammatory drugs are sometimes inefficient for chronic pain management and may cause side effects that limit long term usage. IL-33 belongs to IL-1 cytokine family and it exerts biological activities through binding to its specific receptor ST2. IL-33/ST2 signaling is very important in both innate and adaptive immunity. Emerging evidence indicates IL-33/ST2 signaling regulates pain in both immune and somatosensory systems through promoting neuro-immune or neuron-glia crosstalk, neuroinflammation and neuronal hyperexcitability. Some very latest studies indicate a vital part of IL-33/ST2 in mediating chronic itch. This work aims to overview the existing knowledge regarding the mechanisms of IL-33/ST2 involvement in pain and itch conditions, considering their potential similarities. We also summarized some key findings obtained from clinical studies. The targeting of IL-33/ST2 signaling holds promise for the development of novel therapeutic modalities in the management of pain and itch.
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Affiliation(s)
- Peiyi Li
- Department of Neurobiology and Acupuncture Research, the Third Clinical Medical College, Zhejiang Chinese Medical University, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Qing Yu
- Department of Neurobiology and Acupuncture Research, the Third Clinical Medical College, Zhejiang Chinese Medical University, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Huimin Nie
- Department of Neurobiology and Acupuncture Research, the Third Clinical Medical College, Zhejiang Chinese Medical University, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Chengyu Yin
- Department of Neurobiology and Acupuncture Research, the Third Clinical Medical College, Zhejiang Chinese Medical University, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China
| | - Boyi Liu
- Department of Neurobiology and Acupuncture Research, the Third Clinical Medical College, Zhejiang Chinese Medical University, Key Laboratory of Acupuncture and Neurology of Zhejiang Province, Hangzhou, China.
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4
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Morris SA, Nguyen DG, Patel JN. Pharmacogenomics in allogeneic hematopoietic stem cell transplantation: Implications on supportive therapies and conditioning regimens. Best Pract Res Clin Haematol 2023; 36:101470. [PMID: 37353294 DOI: 10.1016/j.beha.2023.101470] [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: 02/28/2023] [Revised: 04/17/2023] [Accepted: 04/17/2023] [Indexed: 06/25/2023]
Abstract
Allogeneic hematopoietic stem cell transplantation mortality has declined over the years, though prevention and management of treatment-related toxicities and post-transplant complications remains challenging. Applications of pharmacogenomic testing can potentially mitigate adverse drug outcomes due to interindividual variability in drug metabolism and response. This review summarizes clinical pharmacogenomic applications relevant to hematopoietic stem cell transplantation, including antifungals, immunosuppressants, and supportive care management, as well as emerging pharmacogenomic evidence with conditioning regimens.
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Affiliation(s)
- Sarah A Morris
- Department of Cancer Pharmacology & Pharmacogenomics Levine Cancer Institute, Atrium Health, 1021 Morehead Medical Drive, Charlotte, NC, 28204, USA.
| | - D Grace Nguyen
- Department of Cancer Pharmacology & Pharmacogenomics Levine Cancer Institute, Atrium Health, 1021 Morehead Medical Drive, Charlotte, NC, 28204, USA.
| | - Jai N Patel
- Department of Cancer Pharmacology & Pharmacogenomics Levine Cancer Institute, Atrium Health, 1021 Morehead Medical Drive, Charlotte, NC, 28204, USA.
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5
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Magarbeh L, Gorbovskaya I, Wells R, Jhirad R, Le Foll B, Müller DJ. Pharmacogenetics of Lethal Opioid Overdose: Review of Current Evidence and Preliminary Results from a Pilot Study. J Pers Med 2023; 13:918. [PMID: 37373907 DOI: 10.3390/jpm13060918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 05/26/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
There has been a worldwide substantial increase in accidental opioid-overdose deaths. The aim of this review, along with preliminary results from our pilot study, is to highlight the use of pharmacogenetics as a tool to predict causes of accidental opioid-overdose death. For this review, a systematic literature search of PubMed® between the time period of January 2000 to March 2023 was carried out. We included study cohorts, case-controls, or case reports that investigated the frequency of genetic variants in opioid-related post-mortem samples and the association between these variants and opioid plasma concentrations. A total of 18 studies were included in our systematic review. The systematic review provides evidence of the use of CYP2D6, and to a lower extent, CYP2B6 and CYP3A4/5 genotyping in identifying unexpectedly high or low opioid and metabolite blood concentrations from post-mortem samples. Our own pilot study provides support for an enrichment of the CYP2B6*4-allele in our methadone-overdose sample (n = 41) compared to the anticipated frequency in the general population. The results from our systematic review and the pilot study highlight the potential of pharmacogenetics in determining vulnerability to overdose of opioids.
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Affiliation(s)
- Leen Magarbeh
- Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Centre for Addiction and Mental Health, Toronto, ON M5T 1R8, Canada
| | - Ilona Gorbovskaya
- Centre for Addiction and Mental Health, Toronto, ON M5T 1R8, Canada
- Factor-Inwentash Faculty of Social Work, University of Toronto, Toronto, ON M5S 1V4, Canada
| | - Richard Wells
- Office of the Chief Coroner and Ontario Forensic Pathology Service, Toronto, ON M3M 0B1, Canada
| | - Reuven Jhirad
- Office of the Chief Coroner and Ontario Forensic Pathology Service, Toronto, ON M3M 0B1, Canada
| | - Bernard Le Foll
- Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Centre for Addiction and Mental Health, Toronto, ON M5T 1R8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON M5T 1R8, Canada
- Department of Family and Community Medicine, Faculty of Medicine, University of Toronto, Toronto, ON M5G 1V7, Canada
- Translational Addiction Research Laboratory, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON M5T 1R8, Canada
- Acute Care Program, Centre for Addiction and Mental Health, Toronto, ON M5T 1R8, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON M5T 3M7, Canada
- Waypoint Research Institute, Waypoint Centre for Mental Health Care, Penetanguishene, ON L9M 1G3, Canada
| | - Daniel J Müller
- Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON M5S 1A8, Canada
- Centre for Addiction and Mental Health, Toronto, ON M5T 1R8, Canada
- Institute of Medical Sciences, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON M5T 1R8, Canada
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Pizzolato K, Thacker D, Del Toro-Pagán NM, Amin NS, Hanna A, Turgeon J, Michaud V. Utilizing Pharmacogenomics Results to Determine Opioid Appropriateness and Improve Pain Management in a Patient with Osteoarthritis. Pharmgenomics Pers Med 2022; 15:943-950. [PMID: 36393978 PMCID: PMC9651068 DOI: 10.2147/pgpm.s385272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 10/21/2022] [Indexed: 11/09/2022] Open
Abstract
The opioid epidemic in the United States has exposed the need for providers to limit opioid dispensing and identify at-risk patients prior to prescribing opioids. With pharmacogenomic testing, clinicians can analyze hundreds of medications—including commonly prescribed opioids—against genetic results to understand and predict risk and response. Moreover, knowledge of genotypic variants and altered function can help decrease trial and error prescribing, identify patients at-risk for adverse drug events, and improve pain control. This patient case demonstrates how pharmacogenomic test results identified drug–gene interactions and provided insight about a patient’s inadequate opioid therapy response. With pharmacogenomic information, the patient’s healthcare team discontinued opioid therapy and selected a more appropriate regimen for osteoarthritis (ie, celecoxib), resulting in improved pain control and quality of life.
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Affiliation(s)
- Katie Pizzolato
- Tabula Rasa Healthcare, Office of Translational Research and Residency Programs, Moorestown, NJ, 08057, USA
| | - David Thacker
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL, 32827, USA
| | | | - Nishita S Amin
- Tabula Rasa Healthcare, Office of Translational Research and Residency Programs, Moorestown, NJ, 08057, USA
| | - Abeer Hanna
- VieCare Butler, Program of All-Inclusive Care for the Elderly (PACE), Butler, PA, 16001, USA
| | - Jacques Turgeon
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL, 32827, USA
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, H2L, Canada
| | - Veronique Michaud
- Tabula Rasa HealthCare, Precision Pharmacotherapy Research and Development Institute, Orlando, FL, 32827, USA
- Faculty of Pharmacy, Université de Montréal, Montréal, QC, H2L, Canada
- University of Montreal Hospital Research Center (CRCHUM), Montréal, QC, H2X 0A9, Canada
- Correspondence: Veronique Michaud, Precision Pharmacotherapy Research and Development Institute, 13485 Veterans Way, Orlando, FL, 32827, USA, Tel +856-938-8697, Email
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7
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Kusic D, Heil J, Zajic S, Brangan A, Dairo O, Smith G, Morales-Scheihing D, Buono RJ, Ferraro TN, Haroz R, Salzman M, Baston K, Bodofsky E, Sabia M, Resch A, Scheinfeldt LB. Patient Perceptions and Potential Utility of Pharmacogenetic Testing in Chronic Pain Management and Opioid Use Disorder in the Camden Opioid Research Initiative. Pharmaceutics 2022; 14:pharmaceutics14091863. [PMID: 36145611 PMCID: PMC9505214 DOI: 10.3390/pharmaceutics14091863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 08/29/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Pharmacogenetics (PGx) has the potential to improve opioid medication management. Here, we present patient perception data, pharmacogenetic data and medication management trends in patients with chronic pain (arm 1) and opioid use disorder (arm 2) treated at Cooper University Health Care in Camden City, NJ. Our results demonstrate that the majority of patients in both arms of the study (55% and 65%, respectively) are open to pharmacogenetic testing, and most (66% and 69%, respectively) believe that genetic testing has the potential to improve their medical care. Our results further support the potential for CYP2D6 PGx testing to inform chronic pain medication management for poor metabolizers (PMs) and ultrarapid metabolizers (UMs). Future efforts to implement PGx testing in chronic pain management, however, must address patient concerns about genetic test result access and genetic discrimination.
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Affiliation(s)
- Dara Kusic
- Coriell Institute for Medical Research, Camden, NJ 08103, USA
| | - Jessica Heil
- Coriell Institute for Medical Research, Camden, NJ 08103, USA
- Cooper University Health Care, Camden, NJ 08103, USA
| | - Stefan Zajic
- Coriell Institute for Medical Research, Camden, NJ 08103, USA
- GSK, Collegeville, PA 19426, USA
| | - Andrew Brangan
- Coriell Institute for Medical Research, Camden, NJ 08103, USA
- Geisinger, Danville, PA 17822, USA
| | - Oluseun Dairo
- Coriell Institute for Medical Research, Camden, NJ 08103, USA
- Cooper Medical School of Rowan University, Camden, NJ 08103, USA
| | - Gretchen Smith
- Coriell Institute for Medical Research, Camden, NJ 08103, USA
| | | | - Russell J. Buono
- Cooper Medical School of Rowan University, Camden, NJ 08103, USA
| | | | - Rachel Haroz
- Cooper University Health Care, Camden, NJ 08103, USA
- Cooper Medical School of Rowan University, Camden, NJ 08103, USA
| | - Matthew Salzman
- Cooper University Health Care, Camden, NJ 08103, USA
- Cooper Medical School of Rowan University, Camden, NJ 08103, USA
| | - Kaitlan Baston
- Cooper University Health Care, Camden, NJ 08103, USA
- Cooper Medical School of Rowan University, Camden, NJ 08103, USA
| | - Elliot Bodofsky
- Cooper University Health Care, Camden, NJ 08103, USA
- Cooper Medical School of Rowan University, Camden, NJ 08103, USA
| | - Michael Sabia
- Cooper University Health Care, Camden, NJ 08103, USA
- Cooper Medical School of Rowan University, Camden, NJ 08103, USA
| | - Alissa Resch
- Coriell Institute for Medical Research, Camden, NJ 08103, USA
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8
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Pharmacogenetics and Pain Treatment with a Focus on Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) and Antidepressants: A Systematic Review. Pharmaceutics 2022; 14:pharmaceutics14061190. [PMID: 35745763 PMCID: PMC9228102 DOI: 10.3390/pharmaceutics14061190] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 05/29/2022] [Accepted: 05/30/2022] [Indexed: 11/17/2022] Open
Abstract
Background: This systematic review summarizes the impact of pharmacogenetics on the effect and safety of non-steroidal anti-inflammatory drugs (NSAIDs) and antidepressants when used for pain treatment. Methods: A systematic literature search was performed according to the preferred reporting items for systematic reviews and meta-analysis (PRISMA) guidelines regarding the human in vivo efficacy and safety of NSAIDs and antidepressants in pain treatment that take pharmacogenetic parameters into consideration. Studies were collected from PubMed, Scopus, and Web of Science up to the cutoff date 18 October 2021. Results: Twenty-five articles out of the 6547 initially detected publications were identified. Relevant medication–gene interactions were noted for drug safety. Interactions important for pain management were detected for (1) ibuprofen/CYP2C9; (2) celecoxib/CYP2C9; (3) piroxicam/CYP2C8, CYP2C9; (4) diclofenac/CYP2C9, UGT2B7, CYP2C8, ABCC2; (5) meloxicam/CYP2C9; (6) aspirin/CYP2C9, SLCO1B1, and CHST2; (7) amitriptyline/CYP2D6 and CYP2C19; (8) imipramine/CYP2C19; (9) nortriptyline/CYP2C19, CYP2D6, ABCB1; and (10) escitalopram/HTR2C, CYP2C19, and CYP1A2. Conclusions: Overall, a lack of well powered human in vivo studies assessing the pharmacogenetics in pain patients treated with NSAIDs or antidepressants is noted. Studies indicate a higher risk for partly severe side effects for the CYP2C9 poor metabolizers and NSAIDs. Further in vivo studies are needed to consolidate the relevant polymorphisms in NSAID safety as well as in the efficacy of NSAIDs and antidepressants in pain management.
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Affiliation(s)
- Toby N Weingarten
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
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10
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Dorne JLCM, Cirlini M, Louisse J, Pedroni L, Galaverna G, Dellafiora L. A Computational Understanding of Inter-Individual Variability in CYP2D6 Activity to Investigate the Impact of Missense Mutations on Ochratoxin A Metabolism. Toxins (Basel) 2022; 14:toxins14030207. [PMID: 35324704 PMCID: PMC8950366 DOI: 10.3390/toxins14030207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/09/2022] [Accepted: 03/10/2022] [Indexed: 02/04/2023] Open
Abstract
Cytochrome P-450 (CYP) enzymes have a key role in the metabolism of xenobiotics of food origin, and their highly polymorphic nature concurs with the diverse inter-individual variability in the toxicokinetics (TK) and toxicodynamics (TD) of food chemicals. Ochratoxin A is a well-known mycotoxin which contaminates a large variety of food and is associated with food safety concerns. It is a minor substrate of CYP2D6, although the effects of CYP2D6 polymorphisms on its metabolism may be overlooked. Insights on this aspect would provide a useful mechanistic basis for a more science-based hazard assessment, particularly to integrate inter-individual differences in CYP2D6 metabolism. This work presents a molecular modelling approach for the analysis of mechanistic features with regard to the metabolic capacity of CYP2D6 variants to oxidise a number of substrates. The outcomes highlighted that a low-frequency CYP2D6 variant (CYP2D6*110) is likely to enhance ochratoxin A oxidation with possible consequences on TK and TD. It is therefore recommended to further analyse such TK and TD consequences. Generally speaking, we propose the identification of mechanistic features and parameters that could provide a semi-quantitative means to discriminate ligands based on the likelihood to undergo transformation by CYP2D6 variants. This would support the development of a fit-for-purpose pipeline which can be extended to a tool allowing for the bulk analysis of a large number of compounds. Such a tool would ultimately include inter-phenotypic differences of polymorphic xenobiotic-metabolising enzymes in the hazard assessment and risk characterisation of food chemicals.
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Affiliation(s)
- Jean Lou C. M. Dorne
- Scientific Committee and Emerging Risks Unit, European Food Safety Authority, Via Carlo Magno 1A, 43124 Parma, Italy;
| | - Martina Cirlini
- Department of Food and Drug, University of Parma, 43124 Parma, Italy; (L.P.); (G.G.)
- Correspondence: (M.C.); (L.D.); Tel.: +39-0521-906079 (L.D.)
| | - Jochem Louisse
- Wageningen Food Safety Research, P.O. Box 230, 6700 AE Wageningen, The Netherlands;
| | - Lorenzo Pedroni
- Department of Food and Drug, University of Parma, 43124 Parma, Italy; (L.P.); (G.G.)
| | - Gianni Galaverna
- Department of Food and Drug, University of Parma, 43124 Parma, Italy; (L.P.); (G.G.)
| | - Luca Dellafiora
- Department of Food and Drug, University of Parma, 43124 Parma, Italy; (L.P.); (G.G.)
- Correspondence: (M.C.); (L.D.); Tel.: +39-0521-906079 (L.D.)
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11
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Mayoral V. An overview of the use and misuse/abuse of opioid analgesics in different world regions and future perspectives. Pain Manag 2022; 12:535-555. [PMID: 35118876 DOI: 10.2217/pmt-2021-0094] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Opioids are an important therapeutic option for severe resistant chronic pain but, in the absence of proper oversight, their use has risks. The level of prescription opioid misuse/abuse differs among countries, due to differences in healthcare systems and pain management approaches. However, evaluating the true dimension of prescription opioid misuse/abuse is complicated by statistical reporting which often does not differentiate between prescription and illicit opioid use, or between prescription opioid use by patients and nonpatients, highlighting a need for greater uniformity. Parallel efforts to educate patients and the general public about opioid risks, facilitate appropriate analgesic prescribing and identify alternative formulations or options to use instead of or with opioids, may contribute to optimizing prescription opioid use for pain management.
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Affiliation(s)
- Victor Mayoral
- Pain Unit, Hospital Universitari de Bellvitge, L'Hospitalet de Llobregat, Barcelona, Spain
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