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Tsui JI, Rossi SL, Cheng DM, Bendiks S, Vetrova M, Blokhina E, Winter M, Gnatienko N, Backonja M, Bryant K, Krupitsky E, Samet JH. Pilot RCT comparing low-dose naltrexone, gabapentin and placebo to reduce pain among people with HIV with alcohol problems. PLoS One 2024; 19:e0297948. [PMID: 38408060 PMCID: PMC10896547 DOI: 10.1371/journal.pone.0297948] [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: 02/08/2023] [Accepted: 01/10/2024] [Indexed: 02/28/2024] Open
Abstract
BACKGROUND To estimate the effects on pain of two medications (low-dose naltrexone and gabapentin) compared to placebo among people with HIV (PWH) with heavy alcohol use and chronic pain. METHODS We conducted a pilot, randomized, double-blinded, 3-arm study of PWH with chronic pain and past-year heavy alcohol use in 2021. Participants were recruited in St. Petersburg, Russia, and randomized to receive daily low-dose naltrexone (4.5mg), gabapentin (up to 1800mg), or placebo. The two primary outcomes were change in self-reported pain severity and pain interference measured with the Brief Pain Inventory from baseline to 8 weeks. RESULTS Participants (N = 45, 15 in each arm) had the following baseline characteristics: 64% male; age 41 years (SD±7); mean 2 (SD±4) heavy drinking days in the past month and mean pain severity and interference were 3.2 (SD±1) and 3.0 (SD±2), respectively. Pain severity decreased for all three arms. Mean differences in change in pain severity for gabapentin vs. placebo, and naltrexone vs. placebo were -0.27 (95% confidence interval [CI] -1.76, 1.23; p = 0.73) and 0.88 (95% CI -0.7, 2.46; p = 0.55), respectively. Pain interference decreased for all three arms. Mean differences in change in pain interference for gabapentin vs. placebo, and naltrexone vs. placebo was 0.16 (95% CI -1.38, 1.71; p = 0.83) and 0.40 (95% CI -1.18, 1.99; p = 0.83), respectively. CONCLUSION Neither gabapentin nor low-dose naltrexone appeared to improve pain more than placebo among PWH with chronic pain and past-year heavy alcohol use. CLINICAL TRIAL REGISTRATION ClinicalTrials.gov (NCT4052139).
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Affiliation(s)
- Judith I. Tsui
- Department of Medicine, Division of General Internal Medicine University of Washington School of Medicine/Harborview Medical Center, Seattle, Washington, United States of America
| | - Sarah L. Rossi
- Department of Medicine, Section of General Internal Medicine, Boston Medical Center, Clinical Addiction Research and Education (CARE) Unit, Boston, Massachusetts, United States of America
| | - Debbie M. Cheng
- Department of Biostatistics, Boston University School of Public Health, Boston, Massachusetts, Unites States of America
| | - Sally Bendiks
- Department of Medicine, Section of General Internal Medicine, Boston Medical Center, Clinical Addiction Research and Education (CARE) Unit, Boston, Massachusetts, United States of America
| | | | | | - Michael Winter
- Biostatistics and Epidemiology Data Analytics Center, Boston University School of Public Health, Boston, Massachusetts, United States of America
| | - Natalia Gnatienko
- Department of Medicine, Section of General Internal Medicine, Boston Medical Center, Clinical Addiction Research and Education (CARE) Unit, Boston, Massachusetts, United States of America
| | - Miroslav Backonja
- National Center for Complementary and Integrative Health, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Kendall Bryant
- HIV/AIDS Research, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Evgeny Krupitsky
- Pavlov University, St. Petersburg, Russian Federation
- Department of Addictions, V.M. Bekhterev National Medical Research Center for Psychiatry and Neurology, St. Petersburg, Russian Federation
| | - Jeffrey H. Samet
- Department of Medicine, Section of General Internal Medicine, Boston University School of Medicine/Boston Medical Center, Clinical Addiction Research and Education (CARE) Unit, Boston, Massachusetts, United States of America
- Department of Community Health Sciences, Boston University School of Public Health, Boston, Massachusetts, United States of America
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Rana MH, Khan AAG, Khalid I, Ishfaq M, Javali MA, Baig FAH, Kota MZ, Khader MA, Hameed MS, Shaik S, Das G. Therapeutic Approach for Trigeminal Neuralgia: A Systematic Review. Biomedicines 2023; 11:2606. [PMID: 37892981 PMCID: PMC10604820 DOI: 10.3390/biomedicines11102606] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 08/05/2023] [Accepted: 09/13/2023] [Indexed: 10/29/2023] Open
Abstract
This umbrella review aimed to determine the various drugs used to treat trigeminal neuralgia (TN) and to evaluate their efficacies as well as side effects by surveying previously published reviews. An online search was conducted using PubMed, CRD, EBSCO, Web of Science, Scopus, and the Cochrane Library with no limits on publication date or patients' gender, age, and ethnicity. Reviews and meta-analyses of randomized controlled trials pertaining to drug therapy for TN, and other relevant review articles added from their reference lists, were evaluated. Rapid reviews, reviews published in languages other than English, and reviews of laboratory studies, case reports, and series were excluded. A total of 588 articles were initially collected; 127 full-text articles were evaluated after removing the duplicates and screening the titles and abstracts, and 11 articles were finally included in this study. Except for carbamazepine, most of the drugs had been inadequately studied. Carbamazepine and oxcarbazepine continue to be the first choice for medication for classical TN. Lamotrigine and baclofen can be regarded as second-line drugs to treat patients not responding to first-line medication or for patients having intolerable side effects from carbamazepine. Drug combinations using carbamazepine, baclofen, gabapentin, ropivacaine, tizanidine, and pimozide can yield satisfactory results and improve the tolerance to the treatment. Intravenous lidocaine can be used to treat acute exaggerations and botulinum toxin-A can be used in refractory cases. Proparacaine, dextromethorphan, and tocainide were reported to be inappropriate for treating TN. Anticonvulsants are successful in managing trigeminal neuralgia; nevertheless, there have been few studies with high levels of proof, making it challenging to compare or even combine their results in a statistically useful way. New research on other drugs, combination therapies, and newer formulations, such as vixotrigine, is awaited. There is conclusive evidence for the efficacy of pharmacological drugs in the treatment of TN.
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Affiliation(s)
- Muhammad Haseeb Rana
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia;
| | - Abdul Ahad Ghaffar Khan
- Department of Oral and Maxillofacial Surgery, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia; (A.A.G.K.); (I.K.); (M.I.); (F.A.H.B.); (M.Z.K.)
| | - Imran Khalid
- Department of Oral and Maxillofacial Surgery, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia; (A.A.G.K.); (I.K.); (M.I.); (F.A.H.B.); (M.Z.K.)
| | - Muhammad Ishfaq
- Department of Oral and Maxillofacial Surgery, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia; (A.A.G.K.); (I.K.); (M.I.); (F.A.H.B.); (M.Z.K.)
| | - Mukhatar Ahmed Javali
- Department of Periodontics and Community Dental Sciences, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia; (M.A.J.); (M.A.K.)
| | - Fawaz Abdul Hamid Baig
- Department of Oral and Maxillofacial Surgery, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia; (A.A.G.K.); (I.K.); (M.I.); (F.A.H.B.); (M.Z.K.)
| | - Mohammad Zahir Kota
- Department of Oral and Maxillofacial Surgery, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia; (A.A.G.K.); (I.K.); (M.I.); (F.A.H.B.); (M.Z.K.)
| | - Mohasin Abdul Khader
- Department of Periodontics and Community Dental Sciences, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia; (M.A.J.); (M.A.K.)
| | - Mohammad Shahul Hameed
- Department of Diagnostic Sciences and Oral Biology, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia;
| | - Sharaz Shaik
- Department of Prosthetic Dentistry, Lenora Institute of Dental Sciences, Rajahmundry 533101, India;
| | - Gotam Das
- Department of Prosthodontics, College of Dentistry, King Khalid University, Abha 61421, Saudi Arabia;
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Olinger C, Vest J, Tarasek M, Yeo D, DiMarzio M, Burdette C, Williams E, Khazen O, Pilitsis JG. MR thermometry imaging for low intensity focused ultrasound modulation of spinal nervous tissue. Magn Reson Imaging 2023; 101:35-39. [PMID: 37004795 PMCID: PMC10804415 DOI: 10.1016/j.mri.2023.03.020] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/29/2023] [Indexed: 04/03/2023]
Abstract
OBJECTIVES Previously in rodent and swine models, we have shown that external low intensity focused ultrasound (liFUS) can be used to modulate pain responses. To ensure no adverse heating events occur with liFUS modulation in a non-invasive manner, we perform initial work in swine to show that magnetic resonance thermometry imaging (MRTI) is capable of measuring <2.0 °C changes at the L5 DRG. Further, we show that our device can be constructed in an MR-compatible fashion to minimize artifact. METHODS Three MRTI techniques (referenceless, corrected proton resonance frequency shift (PRFS), and PRFS) were applied to assess accuracy of detecting thermal changes at the L5 DRG in unheated euthanized swine. A region of interest (ROI) that includes the L5 DRG was delineated, within which MRTI temperature changes were spatially averaged (ground truth 0 °C). In separate experiments with phantoms, B0 field-inhomogeneity, RF transmit (B1+) and fast gradient echo (fSPGR) magnitude images were acquired to downselect liFUS device materials that produce the least MRI artifacts. RESULTS Referenceless, corrected PRFS, and PRFS MRTI resulted in temperature measurements of 0.8 ± 1.1 °C, 1.1 ± 1.3 °C and 5.2 ± 5 °C, respectively. Both materials caused B0 perturbation but minimal B1+ and MRTI artifacts. The presence of imaging artifacts did not preclude thermal imaging of the region. SIGNIFICANCE We provide preliminary data suggesting that referenceless MRTI can adequately detect small thermal changes at the DRG that may occur with neuromodulation, which is one of the first steps in creating a table of safe parameters for liFUS therapy in humans.
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Affiliation(s)
- Clayton Olinger
- Department of Biomedical Science, Florida Atlantic University, Boca Raton, FL, United States of America
| | - Jonah Vest
- Department of Biomedical Science, Florida Atlantic University, Boca Raton, FL, United States of America
| | | | - Desmond Yeo
- GE Global Research, Niskayuna, NY, United States of America
| | - Marisa DiMarzio
- Department of Biomedical Science, Florida Atlantic University, Boca Raton, FL, United States of America
| | - Clif Burdette
- Acoustic Medsystems, Savoy, IL, United States of America
| | - Emery Williams
- Acoustic Medsystems, Savoy, IL, United States of America
| | - Olga Khazen
- Department of Biomedical Science, Florida Atlantic University, Boca Raton, FL, United States of America
| | - Julie G Pilitsis
- Department of Clinical Neurosciences, Florida Atlantic University, Boca Raton, FL, United States of America.
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Bensen GP, Rogers AC, Leifer VP, Edwards RR, Neogi T, Kostic AM, Paltiel AD, Collins JE, Hunter DJ, Katz JN, Losina E. Does gabapentin provide benefit for patients with knee OA? A benefit-harm and cost-effectiveness analysis. Osteoarthritis Cartilage 2023; 31:279-290. [PMID: 36414225 PMCID: PMC9892279 DOI: 10.1016/j.joca.2022.07.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 05/25/2022] [Accepted: 07/08/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Gabapentin can treat neuropathic pain syndromes and has increasingly been prescribed to treat nociplastic pain. Some patients with knee osteoarthritis (OA) suffer from both nociceptive and nociplastic pain. We examined the cost-effectiveness of adding gabapentin to knee OA care. METHOD We used the Osteoarthritis Policy Model, a validated Monte Carlo simulation of knee OA, to examine the value of gabapentin in treating knee OA by comparing three strategies: 1) usual care, gabapentin sparing (UC-GS); 2) targeted gabapentin (TG), which provides gabapentin plus usual care for those who screen positive for nociplastic pain on the modified PainDETECT questionnaire (mPD-Q) and usual care only for those who screen negative; and 3) universal gabapentin plus usual care (UG). Outcomes included cumulative quality-adjusted life years (QALYs), lifetime direct medical costs, and incremental cost-effectiveness ratios (ICERs), discounted at 3% annually. We derived model inputs from published literature and national databases and varied key input parameters in sensitivity analyses. RESULTS UC-GS dominated both gabapentin-containing strategies, as it led to lower costs and more QALYs. TG resulted in a cost increase of $689 and a cumulative QALY reduction of 0.012 QALYs. UG resulted in a further $1,868 cost increase and 0.036 QALY decrease. The results were robust to plausible changes in input parameters. The lowest TG strategy ICER of $53,000/QALY was reported when mPD-Q specificity was increased to 100% and AE rate was reduced to 0%. CONCLUSION Incorporating gabapentin into care for patients with knee OA does not appear to offer good value.
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Affiliation(s)
- G P Bensen
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
| | - A C Rogers
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA.
| | - V P Leifer
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA.
| | - R R Edwards
- Department of Anesthesiology, Brigham and Women's Hospital, Boston, MA, USA.
| | - T Neogi
- Boston University School of Medicine, Boston, MA, USA.
| | - A M Kostic
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA.
| | - A D Paltiel
- Public Health Modeling Unit, Yale School of Public Health, New Haven, CT, USA.
| | - J E Collins
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.
| | - D J Hunter
- Institute of Bone and Joint Research, Kolling Institute, University of Sydney and Rheumatology Department, Royal North Shore Hospital, Sydney, Australia.
| | - J N Katz
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - E Losina
- Orthopaedic and Arthritis Center for Outcomes Research (OrACORe), Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Policy and Innovation eValuation in Orthopaedic Treatments (PIVOT) Center, Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, MA, USA; Harvard Medical School, Boston, MA, USA; Division of Rheumatology, Inflammation and Immunity, Brigham and Women's Hospital, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA; Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA.
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Kwon DY, Kwak SG, Kim DH. Comparing the therapeutic effects of pregabalin and gabapentin after transforaminal epidural nerve block in lumbar radiculopathy. Medicine (Baltimore) 2022; 101:e29370. [PMID: 35960128 PMCID: PMC9371525 DOI: 10.1097/md.0000000000029370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Lumbar radiculopathy can be presented as low back pain and radiating pain. Transforaminal epidural steroid injection (TFESI) has been used to treat radicular pain, and after the injection, additional medications such as gabapentinoids including pregabalin (PGB) and gabapentin (GBP) can be administered to relieve remnant pain. However, little is known about the effectiveness of gabapentinoids in relieving pain after transforaminal epidural steroid injection. This study was conducted to compare the effect of pregabalin and gabapentin in lumbar radiculopathy patients who underwent transforaminal epidural steroid injection. One hundred seven patients who received TFESI and had taken PGB or GBP after the intervention at Daegu Catholic University Medical Center from January 2013 to August 2021 were included in this study. Visual Analogue Scale (VAS) was evaluated in all patients. Among 107 patients, 57 (53.3%) patients took PGB and 50 (46.7%) patients took GBP after TFESI. The PGB and GBP groups showed reduced VAS scores according to visit (P < .001). However, no statistically significant differences in VAS scores according to the types of medication (P = .811) and change aspects according to visit were observed between the PGB and GBP groups (P = .947). The study findings suggest that both pregabalin and gabapentin can be equally used to reduce pain in lumbar radiculopathy patients who underwent TFESI. Further studies with larger sample size are needed to generalize the findings of this study.
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Affiliation(s)
- Do Yun Kwon
- Department of Physical Medicine and Rehabilitation, Daegu Catholic University Medical Center, Daegu, Republic of Korea
| | - Sang Gyu Kwak
- Department of Medical Statistics, Daegu Catholic University School of Medicine, Daegu, Republic of Korea
- * Correspondence: Sang Gyu Kwak, PhD, Department of Medical Statistics, Daegu Catholic University School of Medicine, 33, Duryugongwon-ro 17-gil, Nam-gu, Daegu, Republic of Korea 42472 (e-mail: )
| | - Dong Hyuck Kim
- Department of Anesthesiology, Daegu Catholic University Medical Center, Daegu, Republic of Korea
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Zhou DJ, Pavuluri S, Snehal I, Schmidt CM, Situ-Kcomt M, Taraschenko O. Movement disorders associated with antiseizure medications: A systematic review. Epilepsy Behav 2022; 131:108693. [PMID: 35483204 PMCID: PMC9596228 DOI: 10.1016/j.yebeh.2022.108693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/14/2022] [Accepted: 03/31/2022] [Indexed: 11/19/2022]
Abstract
New-onset movement disorders have been frequently reported in association with the use of antiseizure medications (ASMs). The frequency of specific motor manifestations and the spectrum of their semiology for various ASMs have not been well characterized. We carried out a systematic review of literature and conducted a search on CINAHL, Cochrane Library, EMBASE, MEDLINE, PsycINFO, and Scopus from inception to April 2021. We compiled the data for all currently available ASMs using the conventional terminology of movement disorders. Among 5123 manuscripts identified by the search, 437 met the inclusion criteria. The largest number of reports of abnormal movements were in association with phenobarbital, valproic acid, lacosamide, and perampanel, and predominantly included tremor and ataxia. The majority of attempted interventions for all agents were discontinuation of the offending drug or dose reduction which led to the resolution of symptoms in most patients. Familiarity with the movement disorder phenomenology previously encountered in relation with specific ASMs facilitates early recognition of adverse effects and timely institution of targeted interventions.
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Affiliation(s)
- Daniel J Zhou
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Spriha Pavuluri
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Isha Snehal
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Cynthia M Schmidt
- Leon S. McGoogan Health Sciences Library, University of Nebraska Medical Center, Omaha, NE, United States
| | - Miguel Situ-Kcomt
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States
| | - Olga Taraschenko
- Department of Neurological Sciences, University of Nebraska Medical Center, Omaha, NE, United States.
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Gómez M, Izquierdo CE, Mayoral Rojals V, Pergolizzi Jr J, Plancarte Sanchez R, Paladini A, Varrassi G. Considerations for Better Management of Postoperative Pain in Light of Chronic Postoperative Pain: A Narrative Review. Cureus 2022; 14:e23763. [PMID: 35518528 PMCID: PMC9064707 DOI: 10.7759/cureus.23763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 04/02/2022] [Indexed: 12/02/2022] Open
Abstract
Chronic postoperative pain (CPOP) is prevalent, with particularly high rates in breast surgery, thoracotomy, and amputation. As the world emerges from the coronavirus disease 2019 (COVID-19) lockdowns, it is expected that there will be an increase in surgical procedures, elevating the importance of preventing CPOP in the coming years. Risk factors are emerging to better stratify patients at high risk for CPOP. Perioperative analgesia plays an important role in managing acute postoperative pain and in some cases may limit its transition to CPOP. Acute postoperative pain is adaptive, normal, expected, and has a well-defined trajectory, while CPOP is maladaptive and, as a form of chronic pain, is challenging to treat. Good analgesia, early ambulation, and rehabilitation efforts may be helpful in preventing CPOP following certain surgeries. Enhanced Recovery After Surgery (ERAS) protocols present guidance to help promote recovery and prevent CPOP.
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Shaheen A, Alam SM, Azam F, Khan M, Ahmad Saleem S, Liaquat A, Mumtaz S. Influence of single nucleotide polymorphism of LAT1 on therapeutic response to gabapentinoids in Pakistani patients with neuropathic pain. Basic Clin Pharmacol Toxicol 2020; 128:503-510. [PMID: 33190395 DOI: 10.1111/bcpt.13534] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/02/2020] [Accepted: 11/09/2020] [Indexed: 11/30/2022]
Abstract
Gabapentinoids are substrate of L-type amino acid transporter 1 (LAT1) for distribution across the blood-brain barrier. The present study aimed to evaluate the effect of LAT1 rs4240803 genetic polymorphism on the clinical efficacy and tolerability of gabapentinoids in Pakistani patients with neuropathic pain. Three-hundred and ninety-two patients were recruited, genotyped for SNP rs4240803, and followed up for eight weeks to evaluate the clinical response to gabapentinoids in terms of pain relief, inadequate response, and the emergence of adverse events. LAT1 rs4240803 GG, GA, and AA genotype frequency were 33.42%, 47.96% and 18.62%, respectively. Out of 392 patients, 323 responded to the treatment and 17.6% discontinued either due to insufficient response or intolerable adverse events (AEs). GA genotype was more frequent in non-responder group (P ˂ 0.001). Maximum pain responders (≥50%) in combination with the lowest incidence of AEs were observed in the GG group, whereas partial responders belonged to GA genotype and with the highest frequency of somnolence (83.6%) and dizziness (69.9%). Overall, 72.5% patients with GA genotype experienced AEs (P ˂ 0.001). In conclusion, clinical outcomes of gabapentinoids are influenced by LAT1 rs4240803 polymorphism and population pharmacogenetics should be considered to evaluate the maximum potential of gabapentinoids in the management of neuropathic pain.
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Affiliation(s)
- Abida Shaheen
- Department of Pharmacology & Therapeutics, Shifa College of Medicine, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Syed Mahboob Alam
- Department of Pharmacology and Therapeutics, Basic Medical Sciences Institute, JPMC, Karachi, Pakistan
| | - Fahad Azam
- Department of Pharmacology & Therapeutics, Shifa College of Medicine, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Moosa Khan
- Department of Pharmacology & Therapeutics, Shaheed Zulfiqar Ali Bhutto Medical University, Islamabad, Pakistan
| | - Salman Ahmad Saleem
- Department of Pain Clinic, Shifa International Hospital, Islamabad, Pakistan
| | - Afrose Liaquat
- Department of Biochemistry, Shifa College of Medicine, Shifa Tameer-e-Millat University, Islamabad, Pakistan
| | - Sana Mumtaz
- Department of Psychosomatic Medicine and Psychotherapy, University Medical Center Gӧttingen, Gӧttingen, Germany
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