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Sweileh WM. Neuroleptic malignant syndrome and serotonin syndrome: a comparative bibliometric analysis. Orphanet J Rare Dis 2024; 19:221. [PMID: 38825678 PMCID: PMC11145872 DOI: 10.1186/s13023-024-03227-5] [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: 04/20/2023] [Accepted: 05/27/2024] [Indexed: 06/04/2024] Open
Abstract
OBJECTIVE This study aimed to analyze and map scientific literature on Neuroleptic Malignant Syndrome (NMS) and Serotonin Syndrome (SS) from prestigious, internationally indexed journals. The objective was to identify key topics, impactful articles, prominent journals, research output, growth patterns, hotspots, and leading countries in the field, providing valuable insights for scholars, medical students, and international funding agencies. METHODS A systematic search strategy was implemented in the PubMed MeSH database using specific keywords for NMS and SS. The search was conducted in the Scopus database, renowned for its extensive coverage of scholarly publications. Inclusion criteria comprised articles published from 1950 to December 31st, 2022, restricted to journal research and review articles written in English. Data were analyzed using Microsoft Excel for descriptive analysis, and VOSviewer was employed for bibliometric mapping. RESULTS The search yielded 1150 articles on NMS and 587 on SS, with the majority being case reports. Growth patterns revealed a surge in NMS research between 1981 and 1991, while SS research increased notably between 1993 and 1997. Active countries and journals differed between NMS and SS, with psychiatry journals predominating for NMS and pharmacology/toxicology journals for SS. Authorship analysis indicated higher multi-authored articles for NMS. Top impactful articles focused on review articles and pathogenic mechanisms. Research hotspots included antipsychotics and catatonia for NMS, while SS highlighted drug interactions and specific medications like linezolid and tramadol. CONCLUSIONS NMS and SS represent rare but life-threatening conditions, requiring detailed clinical and scientific understanding. Differential diagnosis and management necessitate caution in prescribing medications affecting central serotonin or dopamine systems, with awareness of potential drug interactions. International diagnostic tools and genetic screening tests may aid in safe diagnosis and prevention. Reporting rare cases and utilizing bibliometric analysis enhance knowledge dissemination and research exploration in the field of rare drug-induced medical conditions.
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Affiliation(s)
- Waleed M Sweileh
- Department of Biomedical Sciences, Faculty of Medicine and Health Sciences, An-Najah National University, Nablus, Palestine.
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2
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Turossi-Amorim ED, Camargo B, Schuelter-Trevisol F. Prevalence of Potential Pharmacological Interactions in Patients Undergoing Systemic Chemotherapy in a Tertiary Hospital. Hosp Pharm 2022; 57:646-653. [PMID: 36081531 PMCID: PMC9445545 DOI: 10.1177/00185787211073464] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
Introduction: Pharmacological interactions are frequently observed in patients with chronic diseases, and their occurrence is proportional to the amount of medication used daily. Patients undergoing chemotherapy treatment commonly have comorbidities, which favor a greater prevalence of polypharmacy, increasing the risk of drug interactions. Therefore, the aim of this study was to estimate the prevalence of drug interactions in patients undergoing intravenous chemotherapy treated at a hospital oncology service in southern Brazil. Methods: This was an observational study with a cross-sectional design that was carried out with the analysis of secondary data obtained through the review of medical records. The population assessed consisted of all cancer patients who received intravenous chemotherapy from October to December 2020. Results: Out of the 297 patients included in the study, 231 (77.8%) had at least 1 potential pharmacological interaction. In total, 1044 drug interactions were found that were classified according to severity, resulting in 18 (1.7%) contraindicated drug-drug interactions (DDI), 699 (67%) severe, 281 (26.9%) moderate, and 46 (4.4%) minor interactions. There was an association between polypharmacy and the prevalence of drug interactions. Conclusion: The results demonstrate that a large percentage of patients undergoing chemotherapy are susceptible to drug interactions. Thus, it is necessary that prescribers consider all drugs used by patients and, when possible, prescribe alternative drugs that have less potential for interaction in order to prevent drug interactions adverse effects and provide a better prognosis for patients.
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Affiliation(s)
| | - Bruna Camargo
- University of Southern Santa Catarina, Tubarao, Brazil
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3
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Srinivasan ES, Than KD. Commentary: The Phenotypes of Anxiety and Depression: Analysis of Combined Comorbidity and Treatment in Patients Undergoing Spinal Fusion. Neurosurgery 2022; 91:e3-e4. [PMID: 35383684 DOI: 10.1227/neu.0000000000001978] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 02/23/2022] [Indexed: 11/19/2022] Open
Affiliation(s)
- Ethan S Srinivasan
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, USA
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The anaesthetist, opioid analgesic drugs, and serotonin toxicity: a mechanistic and clinical review. Br J Anaesth 2019; 124:44-62. [PMID: 31653394 DOI: 10.1016/j.bja.2019.08.010] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 08/01/2019] [Accepted: 08/04/2019] [Indexed: 11/23/2022] Open
Abstract
Most cases of serotonin toxicity are provoked by therapeutic doses of a combination of two or more serotonergic drugs, defined as drugs affecting the serotonin neurotransmitter system. Common serotonergic drugs include many antidepressants, antipsychotics, and opioid analgesics, particularly fentanyl, tramadol, meperidine (pethidine), and methadone, but rarely morphine and other related phenanthrenes. Symptoms of serotonin toxicity are attributable to an effect on monoaminergic transmission caused by an increased synaptic concentration of serotonin. The serotonin transporter (SERT) maintains low serotonin concentrations and is important for the reuptake of the neurotransmitter into the presynaptic nerve terminals. Some opioids inhibit the reuptake of serotonin by inhibiting SERT, thus increasing the plasma and synaptic cleft serotonin concentrations that activate the serotonin receptors. Opioids that are good inhibitors of SERT (tramadol, dextromethorphan, methadone, and meperidine) are most frequently associated with serotonin toxicity. Tramadol also has a direct serotonin-releasing action. Fentanyl produces an efflux of serotonin, and binds to 5-hydroxytryptamine (5-HT)1A and 5-HT2A receptors, whilst methadone, meperidine, and more weakly tapentadol, bind to 5-HT2A but not 5-HT1A receptors. The perioperative period is a time where opioids and other serotonergic drugs are frequently administered in rapid succession, sometimes to patients with other serotonergic drugs in their system. This makes the perioperative period a relatively risky time for serotonin toxicity to occur. The intraoperative recognition of serotonin toxicity is challenging as it can mimic other serious syndromes, such as malignant hyperthermia, sepsis, thyroid storm, and neuroleptic malignant syndrome. Anaesthetists must maintain a heightened awareness of its possible occurrence and a readiness to engage in early treatment to avoid poor outcomes.
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Ott M, Mannchen JK, Jamshidi F, Werneke U. Management of severe arterial hypertension associated with serotonin syndrome: a case report analysis based on systematic review techniques. Ther Adv Psychopharmacol 2019; 9:2045125318818814. [PMID: 30886699 PMCID: PMC6413434 DOI: 10.1177/2045125318818814] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 08/01/2018] [Indexed: 12/14/2022] Open
Abstract
Serotonin syndrome is thought to arise from serotonin excess. In many cases, symptoms are mild and self-limiting. But serotonin syndrome can become life threatening, when neuromuscular hyperexcitability spins out of control. Uncontainable neuromuscular hyperexcitability may lead to cardiovascular complications, linked to extreme changes in blood pressure. Currently, there is little guidance on how to control blood pressure in hyperserotonergic states. We report a case with treatment-resistant arterial hypertension, followed by a clinical review (using systematic review principles and techniques) of the available evidence from case reports published between 2004 and 2016 to identify measures to control arterial hypertension associated with serotonin syndrome. We conclude that classic antihypertensives may not be effective for the treatment of severe hypertension associated with serotonin syndrome. Benzodiazepines may lower blood pressure. Patients with severe hypertension not responding to benzodiazepines may benefit from cyproheptadine, propofol or both. In severe cases, higher cyproheptadine doses than currently recommended may be necessary.
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Affiliation(s)
- Michael Ott
- Department of Public Health and Clinical
Medicine – Medicine, Umeå University, 901 87 Umeå, Sweden
| | - Julie K. Mannchen
- Department of Public Health and Clinical
Medicine – Family Medicine, Umeå University, Umeå, Sweden
| | | | - Ursula Werneke
- Sunderby Research Unit, Department of Clinical
Sciences – Psychiatry, Umeå University, Umeå, Sweden
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7
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Opioid analgesic drugs and serotonin toxicity (syndrome): mechanisms, animal models, and links to clinical effects. Arch Toxicol 2018; 92:2457-2473. [DOI: 10.1007/s00204-018-2244-6] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 06/13/2018] [Indexed: 12/11/2022]
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Abstract
Psychiatric and physical conditions often coexist, and there is robust evidence that associates the frequency of depression with single and multiple physical conditions. More than half of patients with depression may have at least one chronic physical condition. Therefore, antidepressants are often used in cotherapy with other medications for the management of both psychiatric and chronic physical illnesses. The risk of drug-drug interactions (DDIs) is augmented by complex polypharmacy regimens and extended periods of treatment required, of which possible outcomes range from tolerability issues to lack of efficacy and serious adverse events. Optimal patient outcomes may be achieved through drug selection with minimal potential for DDIs. Desvenlafaxine is a serotonin-norepinephrine reuptake inhibitor approved for the treatment of adults with major depressive disorder. Pharmacokinetic studies of desvenlafaxine have shown a simple metabolic profile unique among antidepressants. This review examines the DDI profiles of antidepressants, particularly desvenlafaxine, in relation to drugs of different therapeutic areas. The summary and comparison of information available is meant to help clinicians in making informed decisions when using desvenlafaxine in patients with depression and comorbid chronic conditions.
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Affiliation(s)
- Yvette Low
- Department of Pharmacy, National University of Singapore, Singapore
| | | | - Graca Lima
- Global Medical Affairs, Asia-Pacific Region, Pfizer, Hong Kong
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9
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Spies PE, Pot JLWH, Willems RPJ, Bos JM, Kramers C. Interaction between tramadol and selective serotonin reuptake inhibitors: are doctors aware of potential risks in their prescription practice? Eur J Hosp Pharm 2017; 24:124-127. [PMID: 31156918 DOI: 10.1136/ejhpharm-2015-000838] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2015] [Revised: 01/31/2016] [Accepted: 03/02/2016] [Indexed: 11/03/2022] Open
Abstract
Objectives The combination of a selective serotonin reuptake inhibitor (SSRI) or serotonin-norepinephrine reuptake inhibitor (SNRI) with tramadol can result in serotonin syndrome, characterised by neuromuscular and autonomic nervous system excitation and altered mental state. The incidence of serotonin syndrome with this combination of drugs is low, and the serotonin syndrome is generally mild or moderate in form, but can be life threatening and is more easily prevented than treated. We aimed to investigate whether prescribers in a general hospital were aware of this risk and if it influenced their prescriptions. Methods A questionnaire was sent to 194 physicians in a general teaching hospital with over 650 beds in The Netherlands. The questionnaire presented four cases, two of whom used an SSRI or SNRI among other medications, and asked the respondents to prescribe an opioid in each case. The respondents were not aware of the focus of our research. Actual prescription rates of tramadol in admitted patients who did or did not use an SSRI or SNRI were assessed using the hospital pharmacy database. Results Based on the questionnaire, respondents prescribed tramadol equally in patients with or without concomitant use of SSRIs/SNRIs. About one-third of respondents who prescribed tramadol indicated they were aware of the potential interaction with SSRIs/SNRIs. About one-fifth deliberately avoided tramadol because a potential interaction with SSRIs/SNRIs was identified. However, there was no difference in actual tramadol prescriptions, as recorded in the hospital pharmacy database: 23.8% of SSRI/SNRI users received tramadol versus 24.6% of non-SSRI/SNRI-users (calculated OR 0.96; 95% CI 0.78 to 1.17). Conclusions In total, 20-30% of prescribers in a general hospital were aware of the potential interaction between tramadol and SSRIs or SNRIs, yet this did not translate to a difference in tramadol prescriptions between SSRI/SNRI users and non-users, as documented in the hospital pharmacy database. A physician's decision to prescribe tramadol to SSRI/SNRI users may be guided by a comprehensive individual benefit-risk assessment; expected benefits of tramadol may outweigh the small risk of serotonin syndrome. In order to increase awareness of the potential risk of a serotonin syndrome, hospital pharmacies may play an important role in signalling the potential interaction and providing information on the benefits and risks of tramadol and alternative analgesics in the presence of SSRIs or SNRIs.
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Affiliation(s)
- Petra E Spies
- Department of Geriatric Medicine, Gelre Hospitals, Apeldoorn, The Netherlands
| | | | | | | | - Cornelis Kramers
- Canisius-Wilhelmina Hospital, Nijmegen, The Netherlands.,Department of Clinical Pharmacy A16, Radboud University Medical Centre, Nijmegen, The Netherlands
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Drug Interaction and Serotonin Toxicity with Opioid Use: Another Reason to Avoid Opioids in Headache and Migraine Treatment. Curr Pain Headache Rep 2017; 20:50. [PMID: 27457368 DOI: 10.1007/s11916-016-0579-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Treatment of headache, specifically migraine attacks, has always been a challenging subject, especially for neurologist and pain specialists. Triptans are generally underutilized, despite being the gold standard abortive medication for migraine attacks. On the other hand, opioid analgesics are overused as a treatment for headache. One reason for this could be physician unfamiliarity with drug interactions between opioids and other medications, especially the possibility of serotonin toxicity. The general awareness of potential serotonin toxicity with using opioid analgesics is low. In this review, we will conduct a theoretic and evidence-based review of the potential for developing serotonin syndrome in patients who are using opioids analgesics, especially in combination with antidepressants, a common co-prescribed combination. We also review the current diagnostic criteria for serotonin syndrome and identify possible shortcomings of those criteria. Our aim is to increase the awareness of health care providers about potential drug interaction of opioid analgesics with other classes of medication. We place particular emphasis on tramadol since this drug is one of the most commonly used opioid analgesics for headache. The potential for developing serotonin syndrome is relatively high in the patients who are using opioid for pain control. The use of opioids in migraine headache is already discouraged due to the high risk of medication overuse headache and also an increase in headache-related disability (Katsarava et al. Neurology 62:788-790, 2004; Bigal and Lipton. Neurology 71:1821-8, 2008; Casucci and Cevoli. Neurol Sci. 34 Suppl 1:S125-8, 2013). This is another reason that physicians and health care providers should avoid using this class of medication for pain, specifically headache and migraine treatment.
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11
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Karunatilake H, Buckley NA. Serotonin Syndrome Induced by Fluvoxamine and Oxycodone. Ann Pharmacother 2016; 40:155-7. [PMID: 16368927 DOI: 10.1345/aph.1e671] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Objective: To report a case of severe serotonergic symptoms following the addition of oxycodone to fluvoxamine. Case Summary: A 70-year-old woman developed severe serotonergic features, including confusion, nausea, fever, clonus, hyperreflexia, hypertonia, shivering, and tachycardia, following the addition of oxycodone 40 mg twice daily to fluvoxamine 200 mg/day, easily fulfilling diagnostic criteria for serotonin syndrome. Discontinuation of the offending drugs resulted in resolution of her symptoms over 48 hours, and no other cause of the syndrome was identified. Use of the Naranjo probability scale indicated a probable relationship between the serotonergic symptoms and the addition of oxycodone to fluvoxamine therapy. Discussion: Serotonin syndrome is a serious adverse reaction usually due to interactions with serotonergic drugs. There have been only 3 previous reports involving oxycodone. Most previous reports of serotonin syndrome involving analgesics have been associated with meperidine, dextromethorphan, and tramadol. Unlike these synthetic opioids, however, oxycodone does not inhibit the reuptake of serotonin. In addition, there are a number of other possible pharmacologic mechanisms for the interaction we observed. Conclusions: Monitoring for serotonergic adverse events should be done when oxycodone is given to patients receiving serotonin-reuptake inhibitors.
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Choi JS, Lee JH, Park SK, Shim BJ, Choi WK, Kim SH, Hwang SC. Serotonin Syndrome following Duloxetine Administration in a Fibromyalgia Patient: Case Report and Literature Review. JOURNAL OF RHEUMATIC DISEASES 2016. [DOI: 10.4078/jrd.2016.23.5.332] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Joon Sul Choi
- Division of Rheumatology, Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Ji Hyun Lee
- Division of Rheumatology, Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Suk Ki Park
- Division of Rheumatology, Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Beom Jin Shim
- Division of Rheumatology, Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Won Kyu Choi
- Division of Rheumatology, Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
| | - Sang Hyun Kim
- Division of Rheumatology, Department of Internal Medicine, Maryknoll Medical Center, Busan, Korea
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Kitamura S, Kawano T, Kaminaga S, Yamanaka D, Tateiwa H, Locatelli FM, Yokoyama M. Effects of fentanyl on serotonin syndrome-like behaviors in rats. J Anesth 2015; 30:178-82. [DOI: 10.1007/s00540-015-2092-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Accepted: 10/13/2015] [Indexed: 01/08/2023]
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Gaffney RR, Schreibman IR. Serotonin Syndrome in a Patient on Trazodone and Duloxetine Who Received Fentanyl following a Percutaneous Liver Biopsy. Case Rep Gastroenterol 2015; 9:132-6. [PMID: 26078731 PMCID: PMC4464014 DOI: 10.1159/000382069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Serotonin syndrome is a rare but potentially life-threatening adverse drug reaction resulting from the use or overuse of serotonergic medications alone or in combination. Mild symptoms, overlapping features with similar conditions and clinician lack of awareness are the major reasons for an often missed diagnosis. Not surprisingly, this condition is significantly underreported as a potential complication of endoscopy if serotonergic medications are used periprocedurally for sedation and analgesia. Here we report the case of a patient with relapsed chronic hepatitis C on antidepressant medications who developed signs and symptoms of serotonin syndrome after a percutaneous liver biopsy. Review of the patient's medication list suggested a possible interaction between her home antidepressants and the post-procedure use of fentanyl for abdominal pain. The patient required monitoring in the medical intensive care unit and stabilized after the administration of benzodiazepines and temporary discontinuation of her home medications. We propose that clinicians need to be aware of the increased risk of serotonin syndrome in the outpatient endoscopy setting, particularly with the wider use of serotonergic antidepressants now available and the repeated number of liver biopsies being performed for management of patients with chronic liver disease.
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Affiliation(s)
- Ryan R Gaffney
- Division of Gastroenterology and Hepatology, Penn State College of Medicine and Milton S. Hershey Medical Center, Hershey, Pa., USA
| | - Ian R Schreibman
- Division of Gastroenterology and Hepatology, Penn State College of Medicine and Milton S. Hershey Medical Center, Hershey, Pa., USA
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Abstract
Serotonin toxicity is a potentially life-threatening condition associated with a range of psychotropic medications, co-administration of specific combinations of agents and overdose of certain drugs. It is associated with a wide diversity of clinical signs and symptoms, including cognitive, autonomic and somatic effects, as well as serious complications, including possible death. Diagnosis is often challenging and requires a high index of suspicion. Differential diagnosis includes syndromes such as neuroleptic malignant syndrome. Management depends on the causal agent and urgency of clinical presentation. Treatment may involve discontinuing the causal agent and providing supportive measures, or emergency intervention to preserve vital functions (airway, breathing, circulation), amongst other measures. Further research is needed to clarify the incidence of serotonin toxicity, issues related to differential diagnosis, optimal management of the condition, and treatment of mood problems following serotonin toxicity.
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Falls BA, Gurrera RJ. Serotonin syndrome in a patient on tramadol, bupropion, trazodone, and oxycodone. PSYCHOSOMATICS 2013; 55:305-9. [PMID: 24360532 DOI: 10.1016/j.psym.2013.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2013] [Revised: 05/28/2013] [Accepted: 05/28/2013] [Indexed: 10/25/2022]
Affiliation(s)
- Brian A Falls
- Psychiatry, VA Boston Healthcare System, Brockton, MA.
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Fox MA, Panessiti MG, Moya PR, Tolliver TJ, Chen K, Shih JC, Murphy DL. Mutations in monoamine oxidase (MAO) genes in mice lead to hypersensitivity to serotonin-enhancing drugs: implications for drug side effects in humans. THE PHARMACOGENOMICS JOURNAL 2013; 13:551-7. [PMID: 22964922 PMCID: PMC3562558 DOI: 10.1038/tpj.2012.35] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2012] [Revised: 07/18/2012] [Accepted: 07/23/2012] [Indexed: 12/16/2022]
Abstract
A possible side effect of serotonin-enhancing drugs is the serotonin syndrome, which can be lethal. Here we examined possible hypersensitivity to two such drugs, the serotonin precursor 5-hydroxy-L-tryptophan (5-HTP) and the atypical opioid tramadol, in mice lacking the genes for both monoamine oxidase A (MAOA) and MAOB. MAOA/B-knockout (KO) mice displayed baseline serotonin syndrome behaviors, and these behavioral responses were highly exaggerated following 5-HTP or tramadol versus baseline and wild-type (WT) littermates. Compared with MAOA/B-WT mice, baseline tissue serotonin levels were increased ∼2.6-3.9-fold in MAOA/B-KO mice. Following 5-HTP, serotonin levels were further increased ∼4.5-6.2-fold in MAOA/B-KO mice. These exaggerated responses are in line with the exaggerated responses following serotonin-enhancing drugs that we previously observed in mice lacking the serotonin transporter (SERT). These findings provide a second genetic mouse model suggestive of possible human vulnerability to the serotonin syndrome in individuals with lesser-expressing MAO or SERT polymorphisms that confer serotonergic system changes.
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Affiliation(s)
- MA Fox
- Laboratory of Clinical Science (LCS), National Institute of Mental Health, NIH, Bethesda, MD, USA
| | - MG Panessiti
- Laboratory of Clinical Science (LCS), National Institute of Mental Health, NIH, Bethesda, MD, USA
| | - PR Moya
- Laboratory of Clinical Science (LCS), National Institute of Mental Health, NIH, Bethesda, MD, USA
| | - TJ Tolliver
- Laboratory of Clinical Science (LCS), National Institute of Mental Health, NIH, Bethesda, MD, USA
| | - K Chen
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
| | - JC Shih
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, Los Angeles, CA, USA
- Department of Cell and Neurobiology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - DL Murphy
- Laboratory of Clinical Science (LCS), National Institute of Mental Health, NIH, Bethesda, MD, USA
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Schreiber S, Barak Y, Hostovsky A, Baratz-Goldstein R, Volis I, Rubovitch V, Pick CG. Interaction of different antidepressants with acute and chronic methadone in mice, and possible clinical implications. J Mol Neurosci 2013; 52:598-604. [PMID: 24057890 DOI: 10.1007/s12031-013-0115-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Accepted: 09/03/2013] [Indexed: 01/04/2023]
Abstract
We studied the interaction of a single dose of different antidepressant medications with a single (acute) dose or implanted mini-pump (chronic) methadone administration in mice, using the hotplate assay. For the acute experiment, subthreshold doses of six antidepressant drugs were administered separately with a single dose of methadone. The addition of a subthreshold dose of desipramine or clomipramine to methadone produced significant augmentation of the methadone effect with each drug (p < 0.05). Fluvoxamine given at a fixed subthreshold dose induced a synergistic effect only with a low methadone dose. Escitalopram, reboxetine and venlafaxine given separately, each at a fixed subthreshold dose, induced no interaction. Possible clinical implications of these findings are that while escitalopram, reboxetine and venlafaxine do not affect methadone's antinociception in mice and are safe to be given together with methadone when indicated, fluvoxamine, clomipramine and desipramine considerably augment methadone-induced effects and should be avoided in this population due to the risk of inducing opiate overdose. For the chromic experiment, when a subthreshold dose of either escitalopram, desipramine or clomipramine was injected to mice following 2 weeks of methadone administration with the mini-pump, none of the antidepressant drugs strengthened methadone's analgesic effect. Further studies are needed before possible clinical implications can be drawn.
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Affiliation(s)
- Shaul Schreiber
- Department of Psychiatry, Tel Aviv Sourasky Medical Center, Tel Aviv University, Tel Aviv, 64239, Israel,
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Tramadol Extended-Release for the Management of Pain due to Osteoarthritis. ISRN PAIN 2013; 2013:245346. [PMID: 27335872 PMCID: PMC4893407 DOI: 10.1155/2013/245346] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Accepted: 04/29/2013] [Indexed: 12/16/2022]
Abstract
Current knowledge on pathogenesis of osteoarticular pain, as well as the consequent several, especially on the gastrointestinal, renal, and cardiovascular systems, side effects of NSAIDs, makes it difficult to perform an optimal management of this mixed typology of pain. This is especially observable in elderly patients, the most frequently affected by osteoarthritis (OA). Tramadol is an analgesic drug, the action of which has a twofold action. It has a weak affinity to mu opioid receptors and, at the same time, can result in inhibition of the reuptake of noradrenaline and serotonin in nociceptorial descending inhibitory control system. These two mechanisms, "opioidergic" and "nonopioidergic," are the grounds for contrasting certain types of pain that are generally less responsive to opioids, such as neuropathic pain or mixed OA pain. The extended-release formulation of tramadol has good efficacy and tolerability and acts through a dosing schedule that allows a high level of patients compliance to therapies with a good recovery outcome for the patients' functional status.
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Abstract
Cancer pain is generally treated with pharmacological measures, relying on using opioids alone or in combination with adjuvant analgesics. Weak opioids are used for mild-to-moderate pain as monotherapy or in a combination with nonopioids. For patients with moderate-to-severe pain, strong opioids are recommended as initial therapy rather than beginning treatment with weak opioids. Adjunctive therapy plays an important role in the treatment of cancer pain not fully responsive to opioids administered alone (ie, neuropathic, bone, and visceral colicky pain). Supportive drugs should be used wisely to prevent and treat opioids’ adverse effects. Understanding the pharmacokinetics, pharmacodynamics, interactions, and cautions with commonly used opioids can help determine appropriate opioid selection for individual cancer patients.
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Rozec B, Cinotti R, Blanloeil Y. [Perioperative adverse events related to antidepressive agents use]. ANNALES FRANCAISES D'ANESTHESIE ET DE REANIMATION 2011; 30:828-840. [PMID: 22019304 DOI: 10.1016/j.annfar.2011.07.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Accepted: 07/30/2011] [Indexed: 05/31/2023]
Abstract
OBJECTIVE Depression is the most common psychiatric disease, which is treated by the use of antidepressive agents possessing various mechanisms of action. Thus, the use in preoperative period of antidepressive agents is frequent (7% of patients scheduled for surgery). The objective of this review was to update the knowledge on the drug interactions between antidepressive agents and drugs used in perioperative period. METHODS (i) Medline and Ovid databases using combination of antidepressive agent and perioperative period as keywords; (ii) national and European epidemiologic database; (iii) expert recommendation and official French health agency; (iv) reference book chapters. RESULTS The clinical practice showed a limited risk of adverse event related to antidepressant agents interaction with perioperative used drugs. In the two past decades, few relevant observations of adverse event related with imipramine and monoamine oxidase inhibitors use was reported. The most recent antidepressive agents had no serious adverse interaction. Nevertheless, the serotonin syndrome has to be known as far as it is more and more reported. In case of hypotension, the use of vasopressive agent has to be careful because of excessive response.
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Affiliation(s)
- B Rozec
- Service d'anesthésie et de réanimation chirurgicale, hôpital G.-et-R.-Laënnec, CHU de Nantes, boulevard Jacques-Monod, 44093 Nantes cedex 1, France
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Use of strong opioids among community-dwelling persons with and without Alzheimer’s disease in Finland. Pain 2011; 152:543-547. [DOI: 10.1016/j.pain.2010.11.003] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2010] [Revised: 11/01/2010] [Accepted: 11/03/2010] [Indexed: 11/22/2022]
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Deaths involving contraindicated and inappropriate combinations of serotonergic drugs. Int J Legal Med 2010; 125:803-15. [PMID: 21120513 DOI: 10.1007/s00414-010-0536-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Accepted: 11/18/2010] [Indexed: 12/23/2022]
Abstract
In the Australian state of Victoria, all fatalities that were recorded from 2002 through to 2008 involving the use of certain serotonin active drugs (tramadol, venlafaxine, fluoxetine, sertraline, citalopram and paroxetine), were reviewed to assess the incidence of contraindicated or ill advised drug combinations. More than 1,000 were identified of which 326 cases formed the basis of this study. These cases involved contraindicated or inappropriate drug combinations that can lead to adverse drug reactions (ADRs) and subsequent fatal toxicity. Of these, 46% were drug-related, 35% were a result of natural disease and 13% were classified as external injury cases. The remaining cases were those where the cause of death (COD) was unascertained. Tramadol was the most common drug, usually detected alongside a serotonergic antidepressant (in 20% of cases). Twenty-five (8%) cases involved contraindicated drug combinations while the remainder (301 cases, 92%) involved drug combinations that are associated with adverse interactions ranging from minor to major severity. Of these 326 cases, the Coroner determined 166 cases (51%) to be acts of intentional self-harm or drug misuse, with the remainder unascertained or attributed to natural disease. Very few post-mortem reports and Coroners' findings made mention of possible ADRs when such combinations were actually present. The majority of cases comprising contraindicated drug combinations involved the combined use of five drugs (24%) at the time of death. A combination of three to five drugs was most common in cases involving inadvisable drug combinations. Combined drug toxicity was the most common COD, with heart disease the most common co-morbidity.
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Review: Pharmacogenetic aspects of the effect of cytochrome P450 polymorphisms on serotonergic drug metabolism, response, interactions, and adverse effects. Forensic Sci Med Pathol 2010; 7:162-84. [PMID: 21052868 DOI: 10.1007/s12024-010-9188-3] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/05/2010] [Indexed: 12/26/2022]
Abstract
The field of pharmacogenetics contains a wealth of potential for the enhancement of clinical practice by providing a more effective match between patient and drug, consequently reducing the probability of an adverse drug reaction. Although a relatively novel concept in the forensic context, pharmacogenetics has the capability to assist in the interpretation of drug related deaths, particularly in unintentional drug poisonings where the cause of death remains unclear. However, the complex pharmacology of the drugs when subjected to genetic variations in metabolism makes interpretation of the expected response and adverse events difficult. Many possess multiple metabolic pathways, narrow therapeutic indices and active metabolites or enantiomers which may be eliminated via different pathways to the parent drug. A number of these drugs, which are metabolised primarily by the CYP450 system, are also associated with serotonin syndrome, or serotonin toxicity, especially when used concomitantly with other serotonin active drugs which rely on the same metabolic pathways for drug elimination. A comprehensive understanding of polymorphic drug metabolism and its expected outcomes is therefore essential when interpreting the involvement of drugs in adverse reactions. This review examines the genetically variable CYP450-mediated metabolism of a number of serotonin-active drugs that are often implicated in cases of serotonin toxicity, to assess the impact of pharmacogenetics on drug metabolism, response, interactions and adverse effects.
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Reich M, Lefebvre-Kuntz D. Antidépresseurs sérotoninergiques et antalgiques opiacés : une association parfois « douloureuse » ! À propos d’un cas clinique. L'ENCEPHALE 2010; 36 Suppl 2:D119-23. [DOI: 10.1016/j.encep.2009.03.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Accepted: 03/10/2009] [Indexed: 10/20/2022]
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Pilgrim J, Gerostamoulos D, Drummer OH. Deaths involving serotonergic drugs. Forensic Sci Int 2010; 198:110-7. [DOI: 10.1016/j.forsciint.2010.01.014] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2009] [Revised: 12/22/2009] [Accepted: 01/23/2010] [Indexed: 10/19/2022]
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Hosseinzadeh H, Jahanian Z. Effect of crocus sativus
L. (saffron) stigma and its constituents, crocin and safranal, on morphine withdrawal syndrome in mice. Phytother Res 2009; 24:726-30. [DOI: 10.1002/ptr.3011] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Tramadol and another atypical opioid meperidine have exaggerated serotonin syndrome behavioural effects, but decreased analgesic effects, in genetically deficient serotonin transporter (SERT) mice. Int J Neuropsychopharmacol 2009; 12:1055-65. [PMID: 19275775 PMCID: PMC2750095 DOI: 10.1017/s146114570900011x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The serotonin syndrome is a potential side-effect of serotonin-enhancing drugs, including antidepressants such as selective serotonin reuptake inhibitors (SSRIs) and monoamine oxidase inhibitors (MAOIs). We recently reported a genetic mouse model for the serotonin syndrome, as serotonin transporter (SERT)-deficient mice have exaggerated serotonin syndrome behavioural responses to the MAOI tranylcypromine and the serotonin precursor 5-hydroxy-l-tryptophan (5-HTP). As numerous case reports implicate the atypical opioids tramadol and meperidine in the development of the human serotonin syndrome, we examined tramadol and meperidine as possible causative drugs in the rodent model of the serotonin syndrome in SERT wild-type (+/+), heterozygous (+/-) and knockout (-/-) mice. Comparisons were made with SERT mice treated with either vehicle or morphine, an opioid not implicated in the serotonin syndrome in humans. Here we show that tramadol and meperidine, but not morphine, induce serotonin syndrome-like behaviours in mice, and we show that this response is exaggerated in mice lacking one or two copies of SERT. The exaggerated response to tramadol in SERT-/- mice was blocked by pretreatment with the 5-HT1A antagonist WAY 100635. Further, we show that morphine-, meperidine- and tramadol-induced analgesia is markedly decreased in SERT-/- mice. These studies suggest that caution seems warranted in prescribing or not warning patients receiving SSRIs or MAOIs that dangerous side-effects may occur during concurrent use of tramadol and similar agents. These findings suggest that it is conceivable that there might be increased vulnerability in individuals with SERT polymorphisms that may reduce SERT by more than 50%, the level in SERT+/- mice.
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Sueurs profuses invalidantes sous hydromorphone. Rev Med Interne 2009; 30:190-1. [DOI: 10.1016/j.revmed.2008.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2007] [Accepted: 05/19/2008] [Indexed: 11/22/2022]
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Kim SW, Shin IS, Kim JM, Park KH, Youn T, Yoon JS. Factors potentiating the risk of mirtazapine-associated restless legs syndrome. Hum Psychopharmacol 2008; 23:615-20. [PMID: 18756499 DOI: 10.1002/hup.965] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Mirtazapine is known to often provoke restless legs syndrome (RLS). In this retrospective chart review study, we evaluated the socio-demographic and clinical factors related to mirtazapine-associated RLS. METHODS Computerized medical records of 181 patients treated with mirtazapine from May 2004 to October 2007 were reviewed. RLS was identified using the diagnostic criteria of the International RLS Study Group. Socio-demographic and clinical characteristics were gathered, including comorbid physical illness and concomitant medications. RESULTS Mirtazapine-associated RLS was observed in 14 patients (8%), and most cases had developed within a few days after starting mirtazapine. Concomitant medication with tramadol, non-opioid analgesics, antihistamine, and dopamine-blocking agents was more frequently prescribed in subjects developing mirtazapine-associated RLS. In logistic regression analysis, concomitant medication with tramadol (odds ratio: 8.61, 95% confidence interval: 1.71-43.49) and dopamine-blocking agents (odds ratio: 4.67, 95% confidence interval: 1.31-16.70) enhanced the risk of mirtazapine-associated RLS. CONCLUSION The combined use of mirtazapine with tramadol or dopamine-blocking agents could potentiate the risk of RLS. Clinician should watch carefully for the development of RLS when mirtazapine is administered to patients who are taking tramadol or dopamine-blocking agents.
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Affiliation(s)
- Sung-Wan Kim
- Department of Psychiatry, Chonnam National University Medical School and Clinical Trial Center, Chonnam National University Hospital, Gwangju, Republic of Korea
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Isenberg D, Wong SC, Curtis JA. Serotonin syndrome triggered by a single dose of suboxone. Am J Emerg Med 2008; 26:840.e3-5. [PMID: 18774063 DOI: 10.1016/j.ajem.2008.01.039] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2007] [Accepted: 01/27/2008] [Indexed: 10/21/2022] Open
Abstract
Suboxone (buprenorphine/naloxone) is an oral medication used for the treatment of opiate dependence. Because of its mixed properties at the opiate receptors, buprenorphine has a ceiling on its euphoric effects. We report the first case of serotonin syndrome caused by buprenorphine and review other medications implicated in serotonin syndrome. A 54-year-old man on tricyclic antidepressants took an unprescribed dose of buprenorphine/naloxone. He presented to the emergency department with signs and symptoms of severe serotonin syndrome including clonus, agitation, and altered mental status. His agitation was not controlled with benzodiazepines and was electively intubated. At the recommendation of the toxicology service, cyproheptadine, a serotonin receptor antagonist, was administered with improvement in the patient's symptoms. Emergency physicians should be aware of the potential of buprenorphine/naloxone to trigger serotonin syndrome.
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Affiliation(s)
- Derek Isenberg
- Department of Emergency Medicine, Drexel University College of Medicine, Philadelphia, PA 19102, USA.
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Perspectives on genetic animal models of serotonin toxicity. Neurochem Int 2008; 52:649-58. [DOI: 10.1016/j.neuint.2007.08.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2007] [Revised: 08/23/2007] [Accepted: 08/29/2007] [Indexed: 12/28/2022]
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Squires LN, Talbot KN, Rubakhin SS, Sweedler JV. Serotonin catabolism in the central and enteric nervous systems of rats upon induction of serotonin syndrome. J Neurochem 2007; 103:174-80. [PMID: 17877637 DOI: 10.1111/j.1471-4159.2007.04739.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Serotonin, a well-known neurotransmitter in mammals, has been linked to a number of neurological and gastrointestinal disorders. One of these disorders, serotonin syndrome, is a potentially deadly condition caused by increased levels of serotonin in the extracellular space. Information on the neurochemical effects of serotonin syndrome on serotonin catabolism is lacking, particularly in relation to the enteric system of the gastrointestinal tract. Here the catabolism of serotonin is monitored in rats with pharmacologically induced serotonin syndrome, with the catabolites characterized using a specialized capillary electrophoresis system with laser-induced native fluorescence detection. Animals induced with serotonin syndrome demonstrate striking increases in the levels of serotonin and its metabolites. In the brain, levels of serotonin increased 2- to 3-fold in animals induced with serotonin syndrome. A major serotonin metabolite, 5-hydroxyindole acetic acid, increased 10- to 100-fold in experimental animals. Similar results were observed in the gastrointestinal tissues; in the small intestines, serotonin levels increased 4- to 5-fold. Concentrations of 5-hydroxyindole acetic acid increased 32- to 100-fold in the intestinal tissues of experimental animals. Serotonin sulfate showed surprisingly large increases, marking what may be the first time the compound has been reported in rat intestinal tissues.
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Affiliation(s)
- Leah N Squires
- Department of Chemistry and the Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, Illinois, USA
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Roughead EE, McDermott B, Gilbert AL. Antidepressants: prevalence of duplicate therapy and avoidable drug interactions in Australian veterans. Aust N Z J Psychiatry 2007; 41:366-70. [PMID: 17464724 DOI: 10.1080/00048670701213294] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE This study assessed the prevalence of duplicate antidepressant prescribing and avoidable potential antidepressant drug interactions in the Australian war veteran population. METHOD The Department of Veterans' Affairs Pharmacy Claims database was interrogated, using specific criteria, to identify antidepressant duplication. In addition, potential drug interactions where safer alternative therapies were available were assessed. These included anticholinergic agents with tricyclic antidepressants and tramadol with antidepressants. Episodic tramadol dispensings with antidepressants were also assessed. RESULTS A total of 46,859 veterans had antidepressants regularly dispensed to them in the period 1 April-31 July 2005. Overall, 4037 potential interactions were identified in 3818 veterans (8.1%) to whom were dispensed antidepressants regularly. Antidepressant and tramadol co-prescribing was the most common potential interaction identified among 3.6% of veterans. Two or more interactions were identified in 212 veterans (0.5%). Analysis of episodic tramadol dispensings with antidepressants suggested a much higher prevalence of 7.7%. CONCLUSION The increasing use of antidepressants and the high level of potentially avoidable interactions detected in the present study, highlight the necessity of ongoing vigilance concerning the use of potentially inappropriate drug combinations, particularly in the elderly.
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Affiliation(s)
- Elizabeth E Roughead
- Quality Use of Medicines and Pharmacy Research Centre, University of South Australia, GPO Box 2471, Adelaide, SA, 5001, Australia.
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Llinares-Tello F, Escrivá-Moscardó S, Martínez-Pastor F, Martínez-Mascaraque P. Probable síndrome serotoninérgico relacionado con la administración de paroxetina y tramadol. Med Clin (Barc) 2007; 128:438. [PMID: 17394862 DOI: 10.1016/s0025-7753(07)72615-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Looper KJ. Potential Medical and Surgical Complications of Serotonergic Antidepressant Medications. PSYCHOSOMATICS 2007; 48:1-9. [PMID: 17209143 DOI: 10.1176/appi.psy.48.1.1] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Serotonergic antidepressants are the most widely used group of antidepressant medications. Although generally considered to have a favorable adverse-effect profile, serotonergic antidepressants are associated with potentially dangerous medical complications, some of which have only recently become apparent to patients and clinicians. This article reviews the association of serotonergic antidepressants and the following medical complications: syndrome of inappropriate antidiuretic hormone secretion, bleeding, serotonin syndrome, serotonin-discontinuation syndrome, and adverse pregnancy and neonatal effects. Physicians need to remain aware of these potential medical complications and integrate this information into their clinical decision-making, informed-consent process, baseline assessment, and follow-up monitoring.
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Affiliation(s)
- Karl J Looper
- Department of Psychiatry, McGill University, Montreal, Canada.
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Beier MT. The Serotonin Syndrome Revisited. J Am Med Dir Assoc 2005; 6:281. [PMID: 16005416 DOI: 10.1016/j.jamda.2005.05.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Manju T Beier
- Geriatric Consultant Resources, LLC, and The University of Michigan, Ann Arbor, MI 48105, USA.
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