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Garza-Garcia JJO, Qu Y. Chemical, pharmacological properties and biosynthesis of opioid mitragynine in Mitragyna speciosa (kratom). CURRENT OPINION IN PLANT BIOLOGY 2024; 81:102600. [PMID: 39002353 DOI: 10.1016/j.pbi.2024.102600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 07/15/2024]
Abstract
Mitragynine, an alkaloid found in Mitragyna speciosa (kratom), shows promise as a potential alternative to opioids owing to its distinctive indole alkaloid structure and its capacity for pain relief, alleviation of opioid withdrawal symptoms, and anti-inflammatory effects. Recently the intricate process of mitragynine biosynthesis from the precursor strictosidine was elucidated, providing insights into the complex pathways responsible for synthesizing this opioid compound and its related diastereomers. As the search continues for the authentic hydroxylase and methyltransferase crucial for mitragynine formation, leveraging enzymes from other species and exploiting enzyme promiscuity has facilitated heterologous mitragynine biosynthesis in microbes. This highlights the extraordinary flexibility of enzymes in generating a spectrum of variations and analogs of kratom opioids within alternative biological systems.
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Affiliation(s)
| | - Yang Qu
- Department of Chemistry, University of New Brunswick, Fredericton, NB, E3B 5A3, Canada.
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2
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Khalid I, Saleem U, Ahmad B, Hawwal MF, Mothana RA. NMDA receptor modulation by Esculetin: Investigating behavioral, biochemical and neurochemical effects in schizophrenic mice model. Saudi Pharm J 2024; 32:101994. [PMID: 38405040 PMCID: PMC10884481 DOI: 10.1016/j.jsps.2024.101994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Accepted: 02/13/2024] [Indexed: 02/27/2024] Open
Abstract
Schizophrenia, a global mental health disorder affecting approximately 1 % of the population, is characterized by neurotransmitter dysregulation, particularly dopamine, serotonin, and glutamate. Current antipsychotic therapies, despite their efficacy, are accompanied by adverse effects, which has motivated researchers to investigate more secure substitutes. This study examines the potential antipsychotic effects of esculetin, a natural coumarin derivative recognized for its wide-ranging pharmacological activities (anti-inflammatory, antioxidant, anti-pathogenic, anticancer, and neuroprotective), in animal model of schizophrenia induced by ketamine. In order to induce disease, acute and chronic ketamine administration was performed on Swiss albino mice, supplemented with esculetin (as the test substance) and clozapine (as the reference standard). Behavioral studies and biochemical assays were performed to evaluate positive, negative, and cognitive symptoms of schizophrenia, as well as antioxidant and oxidant levels in various brain regions. Esculetin demonstrated significant improvements in behavioral symptoms, attenuated oxidative stress and neuroinflammation, and modulated neurotransmitter levels. Afterwards, ELISA was performed to evaluate levels of schizophrenia biomarkers AChE, BDNF. Moreover, proinflammatory cytokines (IL-6 and TNF-α) and NF-κB were also determined. Histopathological parameters of under study brain parts i.e., hippocampus, cortex and striata were also assessed. Esculetin and clozapine significantly (***p < 0.0001) altered ketamine induced behavioral symptoms and attenuated ketamine induced oxidative stress and neuroinflammation. Additionally, esculetin significantly (***p < 0.0001) altered neurotransmitter (dopamine, serotonin, glutamate) levels. ELISA analysis depicts ketamine reduced BDNF levels in hippocampus, cortex and striata while esculetin significantly (***p < 0.0001) increased BDNF levels in under study three parts of brain. Histopathological changes were seen in test groups. The findings of this study indicate that esculetin may have therapeutic potential in the treatment of schizophrenia induced by ketamine. As a result, esculetin may have the potential to be utilized as a treatment for schizophrenia.
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Affiliation(s)
- Iqra Khalid
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Uzma Saleem
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, Government College University, Faisalabad, Pakistan
| | - Bashir Ahmad
- Welsh School of Pharmacy, University of Wales, Cardiff, United Kingdom
| | - Mohammed F. Hawwal
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
| | - Ramzi A. Mothana
- Department of Pharmacognosy, College of Pharmacy, King Saud University, P.O. Box 2457, Riyadh 11451, Saudi Arabia
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Hossain R, Sultana A, Nuinoon M, Noonong K, Tangpong J, Hossain KH, Rahman MA. A Critical Review of the Neuropharmacological Effects of Kratom: An Insight from the Functional Array of Identified Natural Compounds. Molecules 2023; 28:7372. [PMID: 37959790 PMCID: PMC10648626 DOI: 10.3390/molecules28217372] [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: 09/17/2023] [Revised: 10/19/2023] [Accepted: 10/24/2023] [Indexed: 11/15/2023] Open
Abstract
Kratom (Mitragyna speciosa Korth. Havil) has been considered a narcotic drug for years, barred by the law in many parts of the world, while extensive research over the past few decades proves its several beneficial effects, some of which are still in ambiguity. In many countries, including Thailand, the indiscriminate use and abuse of kratom have led to the loss of life. Nonetheless, researchers have isolated almost fifty pure compounds from kratom, most of which are alkaloids. The most prevalent compounds, mitragynine and 7-hydroxy mitragynine, are reported to display agonist morphine-like effects on human μ-opioid receptors and antagonists at κ- and δ-opioid receptors with multimodal effects at other central receptors. Mitragynine is also credited to be one of the modulatory molecules for the Keap1-Nrf2 pathway and SOD, CAT, GST, and associated genes' upregulatory cascades, leading it to play a pivotal role in neuroprotective actions while evidently causing neuronal disorders at high doses. Additionally, its anti-inflammatory, antioxidative, antibacterial, and gastroprotective effects are well-cited. In this context, this review focuses on the research gap to resolve ambiguities about the neuronal effects of kratom and demonstrate its prospects as a therapeutic target for neurological disorders associated with other pharmacological effects.
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Affiliation(s)
- Rahni Hossain
- School of Allied Health Sciences, College of Graduate Studies, Walailak University, Nakhon Si Thammarat 80160, Thailand; (R.H.); (M.N.); (K.N.)
- Research Excellence Center for Innovation and Health Product (RECIHP), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Abida Sultana
- Department of Biochemistry & Molecular Biology, University of Chittagong, Chittagong 4331, Bangladesh;
| | - Manit Nuinoon
- School of Allied Health Sciences, College of Graduate Studies, Walailak University, Nakhon Si Thammarat 80160, Thailand; (R.H.); (M.N.); (K.N.)
- Hematology and Transfusion Science Research Center, Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Kunwadee Noonong
- School of Allied Health Sciences, College of Graduate Studies, Walailak University, Nakhon Si Thammarat 80160, Thailand; (R.H.); (M.N.); (K.N.)
- Research Excellence Center for Innovation and Health Product (RECIHP), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Jitbanjong Tangpong
- School of Allied Health Sciences, College of Graduate Studies, Walailak University, Nakhon Si Thammarat 80160, Thailand; (R.H.); (M.N.); (K.N.)
- Research Excellence Center for Innovation and Health Product (RECIHP), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Kazi Helal Hossain
- Angiogenesis and Brain Development Laboratory, Department of Neurosciences, Huntington Medical Research Institutes (HMRI), Pasadena, CA 91105, USA;
| | - Md Atiar Rahman
- School of Allied Health Sciences, College of Graduate Studies, Walailak University, Nakhon Si Thammarat 80160, Thailand; (R.H.); (M.N.); (K.N.)
- Department of Biochemistry & Molecular Biology, University of Chittagong, Chittagong 4331, Bangladesh;
- Research Excellence Center for Innovation and Health Product (RECIHP), Walailak University, Nakhon Si Thammarat 80160, Thailand
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Prevete E, Kuypers KPC, Theunissen EL, Esposito G, Ramaekers JG, Pasquini M, Corazza O. Clinical Implications of Kratom ( Mitragyna speciosa) Use: a Literature Review. CURRENT ADDICTION REPORTS 2023; 10:317-334. [PMID: 37266188 PMCID: PMC10177737 DOI: 10.1007/s40429-023-00478-3] [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] [Accepted: 03/30/2023] [Indexed: 06/03/2023]
Abstract
Purpose of Review This work aims to provide an up-to-date review of the preclinical and clinical scientific literature on the therapeutic value of kratom to better understand the underlying mechanisms related to its use and inform future therapeutic applications. Recent Findings A growing number of studies, mainly of cross-sectional nature, describe the widespread use of kratom by individuals to self-treat pain, psychiatric symptoms, and substance use disorders (SUD) outside a controlled clinical setting. Preclinical evidence suggests kratom is effective as an analgesic agent and might decrease the self-administration of other drugs. A randomized controlled trial has further supported kratom's therapeutic value as an analgesic. Investigations in nonclinical samples of long-term kratom users also indicate its therapeutic benefit in managing SUD symptoms (e.g., craving) and long-term or acute symptoms (e.g., withdrawal) for alcohol, opioids, and other illicit drugs. However, episodes of kratom-related intoxications have also been reported, often due to the adulteration and the contamination of kratom products mainly sold online or mixed toxicities when consumed outside clinical and traditional settings. Summary Evidence on the clinical implications of kratom use is still limited and uncertain, with kratom research constantly evolving. Therefore, further randomized trials are needed.
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Affiliation(s)
- Elisabeth Prevete
- Department of Human Neurosciences, Sapienza University of Rome, Viale Dell’Università 30, 00185 Rome, Italy
- Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Kim Paula Colette Kuypers
- Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Eef Lien Theunissen
- Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Gianluca Esposito
- Department of Psychology and Cognitive Science, University of Trento, Corso Bettini, 84, 38068 Rovereto, Italy
| | - Johannes Gerardus Ramaekers
- Department of Neuropsychology and Psychopharmacology, Faculty of Psychology and Neuroscience, Maastricht University, P.O. Box 616, 6200 MD Maastricht, the Netherlands
| | - Massimo Pasquini
- Department of Human Neurosciences, Sapienza University of Rome, Viale Dell’Università 30, 00185 Rome, Italy
| | - Ornella Corazza
- Department of Psychology and Cognitive Science, University of Trento, Corso Bettini, 84, 38068 Rovereto, Italy
- Department of Clinical, Pharmacological and Biological Sciences, University of Hertfordshire, College Lane, Hatfield, AL10 9AB UK
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Mukhopadhyay S, Gupta S, Wilkerson JL, Sharma A, McMahon LR, McCurdy CR. Receptor Selectivity and Therapeutic Potential of Kratom in Substance Use Disorders. CURRENT ADDICTION REPORTS 2023. [DOI: 10.1007/s40429-023-00472-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
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Veeramohan R, Zamani AI, Azizan KA, Goh HH, Aizat WM, Razak MFA, Yusof NSM, Mansor SM, Baharum SN, Ng CL. Comparative metabolomics analysis reveals alkaloid repertoires in young and mature Mitragyna speciosa (Korth.) Havil. Leaves. PLoS One 2023; 18:e0283147. [PMID: 36943850 PMCID: PMC10030037 DOI: 10.1371/journal.pone.0283147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 03/02/2023] [Indexed: 03/23/2023] Open
Abstract
The fresh leaves of Mitragyna speciosa (Korth.) Havil. have been traditionally consumed for centuries in Southeast Asia for its healing properties. Although the alkaloids of M. speciosa have been studied since the 1920s, comparative and systematic studies of metabolite composition based on different leaf maturity levels are still lacking. This study assessed the secondary metabolite composition in two different leaf stages (young and mature) of M. speciosa, using an untargeted liquid chromatography-electrospray ionisation-time-of-flight-mass spectrometry (LC-ESI-TOF-MS) metabolite profiling. The results revealed 86 putatively annotated metabolite features (RT:m/z value) comprising 63 alkaloids, 10 flavonoids, 6 terpenoids, 3 phenylpropanoids, and 1 of each carboxylic acid, glucoside, phenol, and phenolic aldehyde. The alkaloid features were further categorised into 14 subclasses, i.e., the most abundant class of secondary metabolites identified. As per previous reports, indole alkaloids are the most abundant alkaloid subclass in M. speciosa. The result of multivariate analysis (MVA) using principal component analysis (PCA) showed a clear separation of 92.8% between the young and mature leaf samples, indicating a high variance in metabolite levels between them. Akuammidine, alstonine, tryptamine, and yohimbine were tentatively identified among the many new alkaloids reported in this study, depicting the diverse biological activities of M. speciosa. Besides delving into the knowledge of metabolite distribution in different leaf stages, these findings have extended the current alkaloid repository of M. speciosa for a better understanding of its pharmaceutical potential.
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Affiliation(s)
- Rubashiny Veeramohan
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
| | - Arief Izzairy Zamani
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
- Leave a Nest Malaysia Sdn Bhd, Cyberjaya, Selangor, Malaysia
| | - Kamalrul Azlan Azizan
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
| | - Hoe-Han Goh
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
| | - Wan Mohd Aizat
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
| | - Mohd Fauzi Abd Razak
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
| | | | | | | | - Chyan Leong Ng
- Institute of Systems Biology, Universiti Kebangsaan Malaysia, UKM Bangi, Selangor, Malaysia
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Nukitram J, Kumarnsit E, Cheaha D. A 1:1 ratio of cannabidiol: tetrahydrocannabinol attenuates methamphetamine conditioned place preference in mice: A prospective study of antidopaminergic mechanism. Brain Res Bull 2023; 192:47-55. [PMID: 36336144 DOI: 10.1016/j.brainresbull.2022.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 10/30/2022] [Accepted: 11/02/2022] [Indexed: 11/05/2022]
Abstract
A 1:1 ratio of cannabidiol to tetrahydrocannabinol (CT) was suggested to be safer for therapeutic purposes in many illnesses. However, CT effects on methamphetamine (METH) conditioned place preference (CPP) remained largely unexplored. This study aimed to examine the effects of CT on METH CPP mice evaluated by animal behaviors accompanied by local field potential (LFP) signals analysis. Male ICR mice were implanted with the LFP electrode in the ventral tegmental area (VTA) and the nucleus accumbens (NAc). Animals were next subjected to induce METH CPP by peritoneal injection with 1 mg/kg METH and 0.9 % NaCl on an alternate day for ten sessions and confined to the corresponding compartment for 30 min meanwhile control mice were given normal saline all day for both compartments. On testing day, either 10 mg/kg CT or 20 mg/kg bupropion (BP), a dopamine reuptake inhibitor, and VTA GABAergic suppressor were orally administered before CPP testing. The results revealed that CPP scores elevation was observed in the METH+vehicle and METH+BP mice, but this was reversed by CT treatment. Although both METH+vehicle and METH+BP enhanced the VTA delta power, NAc gamma I power, NAc delta-gamma coupling, and VTA-NAc gamma I coherence, changes in opposite trends of all mentioned parameters were seen by CT application. These improvements were postulated to involve the antidopaminergic effects of CT via modulations of neural signaling in the VTA and NAc. Altogether, the evidence-based study may suggest the use of CT as alternative drug for METH-seeking and craving therapy.
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Affiliation(s)
- Jakkrit Nukitram
- Physiology Program, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand
| | - Ekkasit Kumarnsit
- Physiology Program, Division of Health and Applied Sciences, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand.
| | - Dania Cheaha
- Biology Program, Division of Biological Science, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand; Biosignal Research Center for Health, Faculty of Science, Prince of Songkla University, Hatyai Campus, Hatyai, Songkhla 90110, Thailand
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Omeiza NA, Bakre AG, Abdulrahim HA, Isibor H, Ezurike PU, Sowunmi AA, Ben-Azu B, Aderibigbe AO. Pretreatment with Carpolobia lutea ethanol extract prevents schizophrenia-like behavior in mice models of psychosis. JOURNAL OF ETHNOPHARMACOLOGY 2022; 295:115432. [PMID: 35659625 DOI: 10.1016/j.jep.2022.115432] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/28/2022] [Accepted: 05/31/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Carpolobia lutea decoction is widely used as a phytotherapeutic against central nervous system-related disorders including insomnia, migraine headache, and mental illness in West and Central Tropical Africa. AIM This study was designed to investigate the antipsychotic activity of Carpolobia lutea (EECL) in mice models of psychosis. METHODS Male Swiss mice (n = 5/group) were given EECL (100, 200, 400, and 800 mg/kg), haloperidol (1 mg/kg), clozapine (5 mg/kg) and vehicle (10 mL/kg) orally before amphetamine (5 mg/kg)-induced hyperlocomotion and stereotypy, apomorphine (2 mg/kg)-induced stereotypy, or ketamine (10, 30, and 100 mg/kg)-induced hyperlocomotion, enhancement of immobility and cognitive impairment. RESULTS EECL (200, 400, and 800 mg/kg) prevented amphetamine- and apomorphine-induced stereotypies, as well as reduced hyperlocomotion induced by amphetamine and ketamine, all of which are predictors of positive symptoms. Regardless of the dose administered, EECL prevented the index of negative symptoms induced by ketamine. Furthermore, higher doses of EECL (400 and 800 mg/kg) also prevented ketamine-induced cognitive impairment, a behavioral phenotype of cognitive symptoms. CONCLUSION Pretreatment with EECL demonstrated antipsychotic activity in mice, preventing amphetamine-, apomorphine-, and ketamine-induced schizophrenia-like symptoms, with 800 mg/kg being the most effective dose.
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Affiliation(s)
- Noah A Omeiza
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Ibadan, Nigeria.
| | - Adewale G Bakre
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Halimat A Abdulrahim
- Department of Medical Biochemistry, College of Health Sciences, University of Ilorin, Ilorin, Nigeria
| | - Happy Isibor
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Precious U Ezurike
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Abimbola A Sowunmi
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Ibadan, Nigeria
| | - Benneth Ben-Azu
- Department of Pharmacology, Faculty of Basic Medical Sciences, Delta State University, Abraka, Nigeria
| | - Adegbuyi O Aderibigbe
- Department of Pharmacology and Therapeutics, Neuropharmacology Unit, College of Medicine, University of Ibadan, Ibadan, Nigeria
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Powell LR, Ryser TJ, Morey GE, Cole R. Kratom as a novel cause of photodistributed hyperpigmentation. JAAD Case Rep 2022; 28:145-148. [PMID: 36187435 PMCID: PMC9523091 DOI: 10.1016/j.jdcr.2022.07.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Affiliation(s)
- Landon R. Powell
- Department of Biology, Whitworth University, Spokane, Washington
| | - Ted J. Ryser
- Dermatology and Laser Center of Canyon County, Nampa, Idaho,Correspondence to: Ted J. Ryser, MD, Dermatology and Laser Center of Canyon County, 318 2nd St. S., Nampa, ID 83651.
| | | | - Ryan Cole
- Cole Diagnostics, Garden City, Idaho
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LC/ESI/TOF-MS Characterization, Anxiolytic and Antidepressant-like Effects of Mitragyna speciosa Korth Extract in Diabetic Rats. Molecules 2022; 27:molecules27072208. [PMID: 35408607 PMCID: PMC9000756 DOI: 10.3390/molecules27072208] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Revised: 03/16/2022] [Accepted: 03/25/2022] [Indexed: 01/15/2023] Open
Abstract
In this study, the attenuative effects of the hydro-alcoholic extract from Mitragyna speciosa (MSE) against diabetes-induced anxiety and depression-like behaviors were examined. In addition, UPLC/ESI/TOF-MS analysis was performed to identify the phytochemical nature of MSE. DM was induced using a combination of high fructose/streptozotocin, and the diabetic rats were treated with MSE (50 and 200 mg/kg) for 5 weeks. After treatment, the animals were subjected to a forced swim test, open field test and elevated plus-maze tests. Additionally, proinflammatory cytokines and oxidative stress parameters were evaluated in the brain tissues of the rats. UPLC/ESI/TOF-MS analysis revealed that MSE is abundantly rich in polyphenolic constituents, notably flavonoid and phenolic glycosides. Behavioral tests and biochemical analyses indicated that diabetic rats showed significantly increased anxiety and depressive-like behavioral deficits, brain oxidative stress and pro-inflammatory cytokines levels (IL-1β, IL-6 and TNF-α). Treatment with MSE (50 and 200 mg/kg) significantly attenuated increased blood glucose level, depressive and anxiety-like behaviors in diabetic rats. Additionally, the antioxidant enzymes activities were markedly increased in MSE-treated animals, while TNF-α, IL-1β and IL-6 cytokines were notably suppressed. Taken together, these results suggested that MSE has potentials as antidepressant and anxiolytic-like effects and improves the brain oxido-inflammatory status in diabetic rats.
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Prevete E, Kuypers KPC, Theunissen EL, Corazza O, Bersani G, Ramaekers JG. A systematic review of (pre)clinical studies on the therapeutic potential and safety profile of kratom in humans. Hum Psychopharmacol 2022; 37:e2805. [PMID: 34309900 PMCID: PMC9285932 DOI: 10.1002/hup.2805] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/08/2021] [Indexed: 02/05/2023]
Abstract
INTRODUCTION Kratom (Mitragyna speciosa) is a tropical plant traditionally used as an ethnomedicinal remedy for several conditions in South East Asia. Despite the increased interest in its therapeutical benefits in Western countries, little scientific evidence is available to support such claims, and existing data remain limited to kratom's chronic consumption. OBJECTIVE Our study aims to investigate (pre)clinical evidence on the efficacy of kratom as a therapeutic aid and its safety profile in humans. METHODS A systematic literature search using PubMed and the Medline database was conducted between April and November 2020. RESULTS Both preclinical (N = 57) and clinical (N = 18) studies emerged from our search. Preclinical data indicated a therapeutic value in terms of acute/chronic pain (N = 23), morphine/ethanol withdrawal, and dependence (N = 14), among other medical conditions (N = 26). Clinical data included interventional studies (N = 2) reporting reduced pain sensitivity, and observational studies (N = 9) describing the association between kratom's chronic (daily/frequent) use and safety issues, in terms of health consequences (e.g., learning impairment, high cholesterol level, dependence/withdrawal). CONCLUSIONS Although the initial (pre)clinical evidence on kratom's therapeutic potential and its safety profile in humans is encouraging, further validation in large, controlled clinical trials is required.
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Affiliation(s)
- Elisabeth Prevete
- Department of Neuropsychology and PsychopharmacologyFaculty of Psychology and NeuroscienceMaastricht UniversityMaastrichtthe Netherlands
| | - Kim Paula Colette Kuypers
- Department of Neuropsychology and PsychopharmacologyFaculty of Psychology and NeuroscienceMaastricht UniversityMaastrichtthe Netherlands
| | - Eef Lien Theunissen
- Department of Neuropsychology and PsychopharmacologyFaculty of Psychology and NeuroscienceMaastricht UniversityMaastrichtthe Netherlands
| | - Ornella Corazza
- Department of Clinical, Pharmacological and Biological SciencesCollege LaneUniversity of HertfordshireHatfieldUnited Kingdom,Department of Medico‐Surgical Sciences and BiotechnologiesFaculty of Pharmacy and MedicineSapienza University of RomeLatinaItaly
| | - Giuseppe Bersani
- Department of Medico‐Surgical Sciences and BiotechnologiesFaculty of Pharmacy and MedicineSapienza University of RomeLatinaItaly
| | - Johannes Gerardus Ramaekers
- Department of Neuropsychology and PsychopharmacologyFaculty of Psychology and NeuroscienceMaastricht UniversityMaastrichtthe Netherlands
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Hanapi NA, Chear NJY, Azizi J, Yusof SR. Kratom Alkaloids: Interactions With Enzymes, Receptors, and Cellular Barriers. Front Pharmacol 2021; 12:751656. [PMID: 34867362 PMCID: PMC8637859 DOI: 10.3389/fphar.2021.751656] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Accepted: 10/26/2021] [Indexed: 01/11/2023] Open
Abstract
Parallel to the growing use of kratom, there is a wealth of evidence from self-report, preclinical, and early clinical studies on therapeutic benefits of its alkaloids in particular for treating pain, managing substance use disorder, and coping with emotional or mental health conditions. On the other hand, there are also reports on potential health risks concerning kratom use. These two aspects are often discussed in reviews on kratom. Here, we aim to highlight specific areas that are of importance to give insights into the mechanistic of kratom alkaloids pharmacological actions. This includes their interactions with drug-metabolizing enzymes and predictions of clinical drug-drug interactions, receptor-binding properties, interactions with cellular barriers in regards to barrier permeability, involvement of membrane transporters, and alteration of barrier function when exposed to the alkaloids.
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Affiliation(s)
- Nur Aziah Hanapi
- Centre for Drug Research, Universiti Sains Malaysia, Minden, Malaysia
| | | | - Juzaili Azizi
- Centre for Drug Research, Universiti Sains Malaysia, Minden, Malaysia
| | - Siti R Yusof
- Centre for Drug Research, Universiti Sains Malaysia, Minden, Malaysia
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Pentylenetetrazol-like stimulus is not produced following naloxone-precipitated mitragynine withdrawal in rats. Psychopharmacology (Berl) 2021; 238:3183-3191. [PMID: 34333672 DOI: 10.1007/s00213-021-05934-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 07/08/2021] [Indexed: 01/22/2023]
Abstract
RATIONALE Kratom (Mitragyna speciosa Korth), a native medicinal plant of Southeast Asia, is proposed to exhibit potential therapeutic value as an opioid substitute. However, studies of its negative emotional states resulting from withdrawal particularly of its main psychoactive compound, mitragynine (MG), are limited. OBJECTIVES Using the pentylenetetrazol (PTZ) discrimination assay, this study aims to investigate the effects of MG in responding to the PTZ stimulus and to assess the generalisation effects of withdrawal from MG to the PTZ stimulus. METHODS Rats (n = 20) were trained on a tandem (FR-10, VI-15) schedule of food reinforcement to press one lever after administration of the anxiogenic compound PTZ (16 mg/kg, i.p.) and an alternate lever after vehicle. Following acute tests, training was suspended, and rats were chronically treated with MG or morphine at 8-h intervals for 9 days and withdrawal was precipitated on the tenth day using naloxone (1 mg/kg, i.p.). The rats were tested for generalisation to PTZ at 2, 8 and 24 h after the last dose of MG or morphine administration. RESULTS Unlike morphine that produced dose-related PTZ-like stimulus, MG at 3, 10, 30 and 45 mg/kg doses showed no substitution to the PTZ discriminative stimulus. In contrast to morphine which produced a time-dependent generalisation to the PTZ stimulus, naloxone did not precipitate withdrawal effects in MG-treated rats as they selected the vehicle lever at three withdrawal time points. CONCLUSION These results demonstrate that MG produces a very different response to morphine withdrawal that is not associated with anxiogenic-like subjective symptoms. These characteristics of MG may provide further support for use as a novel pharmacotherapeutic intervention for managing opioid use disorder.
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Self-reported Health Diagnoses and Demographic Correlates With Kratom Use: Results From an Online Survey. J Addict Med 2021; 14:244-252. [PMID: 31567595 DOI: 10.1097/adm.0000000000000570] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVES To determine whether diagnosed pre-existing health conditions correlate with Kratom demographics and use patterns. METHODS A cross-sectional, anonymous US national online survey was conducted among 8049 Kratom users in October, 2016 to obtain demographic, health, and Kratom use pattern information. RESULTS People who use Kratom to mitigate illicit drug dependence self-reported less pain and better overall health than individuals who used Kratom for acute/chronic pain. Self-reported improvements in pre-existing mental health symptoms (attention deficit and hyperactivity disorder/attention deficit disorder, anxiety, bipolar disorder, post-traumatic stress disorder, and depression) attributed to Kratom use were greater than those related to somatic symptoms (back pain, rheumatoid arthritis, acute pain, chronic pain, fibromyalgia). Demographic variables, including female sex, older age, employment status, and insurance coverage correlated with increased likelihood of Kratom use. CONCLUSIONS Kratom use may serve as a self-treatment strategy for a diverse population of patients with pre-existing health diagnoses. Healthcare providers need to be engaging with patients to address safety concerns and potential limitations of its use in clinical practice for specific health conditions.
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Jensen AN, Truong QN, Jameson M, Nadal CN. Kratom-induced transaminitis with subsequent precipitated opioid withdrawal following naltrexone. Ment Health Clin 2021; 11:220-224. [PMID: 34026398 PMCID: PMC8120986 DOI: 10.9740/mhc.2021.05.220] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Kratom is an herbal supplement that has gained popularity for recreational use within the United States. Kratom exerts opioid-like effects and, although not US FDA approved, is commonly used for self-treatment of pain, withdrawal management from opioids, and euphoria. Drug-related hepatic injury has been associated with kratom use. All of this raises concern for patient safety and monitoring. The potential for additive liver toxicity must be considered when kratom is used concurrently with hepatotoxic, over-the-counter, herbal, and prescription medications. This case report describes a case of kratom-induced liver inflammation complicated by opioid withdrawal that was precipitated by initiation of IM naltrexone. To our knowledge, there are no published case reports related to opioid withdrawal following naltrexone administration in patients using kratom (without other opioids). The purpose of this case report is to demonstrate potential complications that may arise with kratom use and considerations that should be taken prior to initiation of naltrexone in kratom users.
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Affiliation(s)
- Aimee N Jensen
- PGY-2 Pharmacy Administration and Leadership Resident, Bay Pines VA Healthcare System, Department of Veterans Affairs, Bay Pines, Florida.,PGY-1 Pharmacy Practice Resident, Bay Pines VA Healthcare System, Department of Veterans Affairs, Bay Pines, Florida.,Psychiatrist, Bay Pines VA Healthcare System, Department of Veterans Affairs, Bay Pines, Florida
| | - Quynh-Nhu Truong
- PGY-2 Pharmacy Administration and Leadership Resident, Bay Pines VA Healthcare System, Department of Veterans Affairs, Bay Pines, Florida
| | - Melanie Jameson
- PGY-1 Pharmacy Practice Resident, Bay Pines VA Healthcare System, Department of Veterans Affairs, Bay Pines, Florida
| | - Celeste N Nadal
- Psychiatrist, Bay Pines VA Healthcare System, Department of Veterans Affairs, Bay Pines, Florida
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Ior LD, Otimenyin SO, Okwuasaba FK. Antipsychotic-like effect of ethyl acetate fraction of Terminalia macroptera leaf in mice. IBRO Neurosci Rep 2021; 10:83-89. [PMID: 33842914 PMCID: PMC8019976 DOI: 10.1016/j.ibneur.2021.01.003] [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: 09/07/2020] [Accepted: 01/19/2021] [Indexed: 10/25/2022] Open
Abstract
Psychosis is a chronic neuropsychiatric disorder that affects millions of individuals worldwide and impairs the quality of life and productivity of the patients. Terminalia macroptera Guill & Perr. (Combrataceae) is a plant that is used in the management of anxiety related disorders. The present study investigates the antipsychotic effects of ethyl acetate fraction of T. macroptera (EFTM) leaf in ketamine-induced psychosis in mice. Acute toxicity of EFTM was determine using Lorke's method. Ketamine (25 mg/kg) was injected once daily for 7 consecutive days in Swiss albino mice to induce psychosis. The effect of the extracts (100, 200 and 400 mg/kg) was evaluated against psychotic-like behaviors induced by ketamine including locomotor activity and stereotypy in the open field test, immobility duration in the forced swim test, and memory impairment using the Y- maze test. The acute antipsychotic effect of EFTM was evaluated on apomorphine climbing test, while woodblock test was performed to assess its extrapyramidal side effects. The LD50 was found to be 3807 mg/kg p.o. which is considered safe. EFTM (100, 200 and 400 mg/kg) exhibited significant antipsychotic effect by reducing ketamine-induced hyperactivity, immobility, and memory deficit in mice, EFTM also suppressed stereotypic climbing behavior due to apomorphine. Accordingly, the antipsychotic activity of EFTM was not associated with extrapyramidal side effects as evidenced by lack of catalepsy. The study revealed that EFTM ameliorated psychotic-like symptoms and is devoid of extrapyramidal side effects in mice, underscoring its antipsychotic-like effect.
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Affiliation(s)
- Lydia Doosuur Ior
- Department of Pharmacology, Faculty of Pharmaceutical Sciences, University of Jos, Jos, Nigeria
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Johnson LE, Balyan L, Magdalany A, Saeed F, Salinas R, Wallace S, Veltri CA, Swogger MT, Walsh Z, Grundmann O. The Potential for Kratom as an Antidepressant and Antipsychotic. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2020; 93:283-289. [PMID: 32607089 PMCID: PMC7309668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Mitragyna speciosa, otherwise known as kratom, is a plant in the coffee family (Rubiaceae) native to Southeast Asia and Thailand whose leaves have been shown to cause opioid-like and stimulant responses upon ingestion. The major pharmacologically active compounds present in kratom, mitragynine and 7-hydroxymitragynine (7-HMG), are both indole alkaloids and are responsible for its opioid-like activity. While kratom is most commonly known for its affinity for mu-opioid receptors, research has shown one of its active components has effects on the same receptors to which some antipsychotics bind, such as D2 dopamine, serotonin (5-HT2C and 5-HT7), and alpha-2 adrenergic receptors displaying possible indications of kratom to be used as both antipsychotics and antidepressants. Although studies to evaluate this effect are still lacking, several online and in-person surveys note relief of depression and anxiety symptoms among those who consume kratom products, and in fact identify it as a common reason for consumption. This then highlights the dire need for further research to be conducted on kratom, its mechanism of action and the constituents that elicit these antidepressant, anxiolytic, and antipsychotic properties.
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Affiliation(s)
- Lindsay E. Johnson
- College of Pharmacy, Department of Medicinal Chemistry, University of Florida, Gainesville, FL
| | - Lilian Balyan
- Midwestern University, College of Pharmacy, Department of Pharmaceutical Sciences, Glendale, AZ
| | - Amy Magdalany
- Midwestern University, College of Pharmacy, Department of Pharmaceutical Sciences, Glendale, AZ
| | - Fizza Saeed
- Midwestern University, College of Pharmacy, Department of Pharmaceutical Sciences, Glendale, AZ
| | - Robert Salinas
- Midwestern University, College of Pharmacy, Department of Pharmaceutical Sciences, Glendale, AZ
| | - Starla Wallace
- Midwestern University, College of Pharmacy, Department of Pharmaceutical Sciences, Glendale, AZ
| | - Charles A. Veltri
- Midwestern University, College of Pharmacy, Department of Pharmaceutical Sciences, Glendale, AZ
| | - Marc T. Swogger
- Department of Psychiatry, University of Rochester Medical Center, Rochester, NY
| | - Zach Walsh
- Department of Psychology, University of British Columbia, Kelowna, BC, Canada
| | - Oliver Grundmann
- College of Pharmacy, Department of Medicinal Chemistry, University of Florida, Gainesville, FL,Midwestern University, College of Pharmacy, Department of Pharmaceutical Sciences, Glendale, AZ,To whom all correspondence should be addressed: Oliver Grundmann, PhD, Department of Medicinal Chemistry, College of Pharmacy, University of Florida, 1345 Center Drive, Room P6-20, Gainesville, FL, 32611; Tel: 001-352-246-4994, Fax: 001-352-392-9455, , ORCID iD: 0000-0003-2302-8949
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Vijeepallam K, Pandy V, Murugan DD, Naidu M. Methanolic extract of Mitragyna speciosa Korth leaf inhibits ethanol seeking behaviour in mice: involvement of antidopaminergic mechanism. Metab Brain Dis 2019; 34:1713-1722. [PMID: 31396844 DOI: 10.1007/s11011-019-00477-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 07/30/2019] [Indexed: 12/11/2022]
Abstract
In the current study, the effect of methanolic extract of Mitragyna speciosa leaf (MMS) against the rewarding and reinforcing properties of ethanol using a mouse model of conditioned place preference (CPP) and runway model of drug self-administration was studied. Subsequently, the effect of MMS on dopamine level in the nucleus accumbens (NAc) of the mouse brain was further investigated. From the data obtained, MMS (50 and 75 mg/kg, p.o.) significantly reversed the ethanol-place preference in mice, which is similar to the effect observed in the reference drugs acamprosate (300 mg/kg, p.o.) and clozapine (1 mg/kg, p.o.) treatment groups in CPP test. Likewise, the escalating doses of ethanol-conditioned mice reduced the runtime to reach goal box, infers the positive reinforcing effects of alcohol. Interestingly, MMS (50, 75 and 100 mg/kg, p.o.) significantly prolonged the runtime in ethanol-conditioned mice. Besides, MMS (50 and 75 mg/kg, p.o.) and reference drugs; acamprosate (300 mg/kg, p.o.) and clozapine (1 mg/kg, p.o.) treated mice significantly decreased the alcohol-induced elevated dopamine level in the NAc region of the brain. Overall, this study provides first evidence that MMS inhibits ethanol seeking behaviour in mice. Based on these findings, we suggest that Mitragyna speciosa may well be utilized for novel drug development to combat alcohol dependence.
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Affiliation(s)
- Kamini Vijeepallam
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Vijayapandi Pandy
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- Department of Pharmacology, Chalapathi Institute of Pharmaceutical Sciences, Chalapathi Nagar, Lam, Guntur, Andhra Pradesh, 522034, India.
| | - Dharmani Devi Murugan
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Murali Naidu
- Department of Anatomy, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia
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Meireles V, Rosado T, Barroso M, Soares S, Gonçalves J, Luís Â, Caramelo D, Simão AY, Fernández N, Duarte AP, Gallardo E. Mitragyna speciosa: Clinical, Toxicological Aspects and Analysis in Biological and Non-Biological Samples. MEDICINES 2019; 6:medicines6010035. [PMID: 30836609 PMCID: PMC6473843 DOI: 10.3390/medicines6010035] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 02/24/2019] [Accepted: 02/27/2019] [Indexed: 02/07/2023]
Abstract
The abuse of psychotropic substances is a well-known phenomenon, and many of them are usually associated with ancestral traditions and home remedies. This is the case of Mitragyna speciosa (kratom), a tropical tree used to improve work performance and to withstand great heat. According to several published studies, the main reasons for kratom consumption involve improving sexual performance and endurance, but also social and recreational uses for the feeling of happiness and euphoria; it is also used for medical purposes as a pain reliever, and in the treatment of diarrhea, fever, diabetes, and hypertension. However, this plant has gained more popularity amongst young people over the last years. Since it is available on the internet for purchase, its use is now widely as a drug of abuse, namely as a new psychoactive substance, being a cheaper alternative to opioids that does not require medical prescription in most countries. According to internet surveys by the European Monitoring Centre for Drugs and Drug Addiction in 2008 and 2011, kratom was one of the most widely supplied new psychoactive substances. The composition of kratom is complex; in fact, more than 40 different alkaloids have been identified in Mitragyna speciosa so far, the major constituent being mitragynine, which is exclusive to this plant. Besides mitragynine, alkaloids such as corynantheidine and 7-hydroxamitragynine also present pharmacological effects, a feature that may be attributed to the remaining constituents as well. The main goal of this review is not only to understand the origin, chemistry, consumption, and analytical methodologies for analysis and mechanism of action, but also the use of secondary metabolites of kratom as therapeutic drugs and the assessment of potential risks associated with its consumption, in order to aid health professionals, toxicologists, and police authorities in cases where this plant is present.
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Affiliation(s)
- Vânia Meireles
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Tiago Rosado
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Mário Barroso
- Serviço de Química e Toxicologia Forenses, Instituto de Medicina Legal e Ciências Forenses-Delegação do Sul, 1169-201 Lisboa, Portugal.
| | - Sofia Soares
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Joana Gonçalves
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Ângelo Luís
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Débora Caramelo
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Ana Y Simão
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Nicolás Fernández
- Universidad de Buenos Aires, Facultad de Farmacia y Bioquímica, Cátedra de Toxicología y Química Legal, Laboratorio de Asesoramiento Toxicológico Analítico (CENATOXA). Junín 956 7mo piso. Ciudad Autónoma de Buenos Aires (CABA), Buenos Aires C1113AAD, Argentina.
| | - Ana Paula Duarte
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
| | - Eugenia Gallardo
- Centro de Investigação em Ciências da Saúde, Faculdade de Ciências da Saúde da Universidade da Beira Interior (CICS-UBI), 6200-506 Covilhã, Portugal.
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Kumbol VWA, Abotsi WKM, Ekuadzi E, Woode E. Albizia zygia root extract exhibits antipsychotic-like properties in murine models of schizophrenia. Pharmacotherapy 2018; 106:831-841. [PMID: 30119253 DOI: 10.1016/j.biopha.2018.07.030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 07/05/2018] [Accepted: 07/05/2018] [Indexed: 12/11/2022]
Abstract
BACKGROUND The root extract of Albizia zygia (DC.) J.F. Macbr. (Leguminosae) is used to manage mental disorders in African traditional medicine. However, its value, particularly, against negative and cognitive symptoms of schizophrenia have not been evaluated. AIM The aim of this study was to evaluate the antipsychotic properties of the hydroethanolic root extract of Albizia zygia (AZE) against positive, negative and cognitive symptoms of schizophrenia in animal models. MATERIALS AND METHODS The effects of AZE (30-300 mg kg-1) were evaluated against apomorphine-induced cage climbing as well as ketamine -induced hyperlocomotion, -enhanced immobility, -impaired social interaction and novel object recognition. The propensity of AZE to induce catalepsy and to attenuate haloperidol-induced catalepsy were also investigated. RESULTS AZE 30-300 mg kg-1 significantly reduced apomorphine-induced climbing behaviour as well as ketamine-induced hyperlocomotion, immobility and object recognition deficits (at least P < 0.05). Moreover, the extract showed no cataleptic effect but significantly inhibited haloperidol-induced catalepsy at a dose of 30 mg kg-1 (P < 0.05). CONCLUSION The root extract of Albizia zygia exhibited an antipsychotic-like activity in mice with potential to alleviate positive, negative and cognitive symptoms of schizophrenia.
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Affiliation(s)
- Victor Wumbor-Apin Kumbol
- Department of Pharmacology, Faculty of Pharmacy & Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Wonder Kofi Mensah Abotsi
- Department of Pharmacology, Faculty of Pharmacy & Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Edmund Ekuadzi
- Department of Pharmacognosy, Faculty of Pharmacy & Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
| | - Eric Woode
- Department of Pharmacology, Faculty of Pharmacy & Pharmaceutical Sciences, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana.
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Pandy V, Vijeepallam K. Antipsychotic-like activity of scopoletin and rutin against the positive symptoms of schizophrenia in mouse models. Exp Anim 2017; 66:417-423. [PMID: 28701621 PMCID: PMC5682354 DOI: 10.1538/expanim.17-0050] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
In an earlier report, we demonstrated an antipsychotic-like activity of a methanolic
extract of Morinda citrifolia Linn fruit in mouse models and postulated
the contribution of its bioactive principles, scopoletin and rutin. Moreover, the
antidopaminergic activities of scopoletin and rutin were reported in isolated vas deferens
preparations. In the present study, scopoletin and rutin were assessed for
antipsychotic-like activity using apomorphine-induced climbing behavior and
methamphetamine-induced stereotypy in mice. The results of this study revealed that
scopoletin and rutin (0.05, 0.1, 0.5, and 1 mg/kg, p.o.) had a “U-shaped” dose-dependent
effect on climbing and stereotyped behaviors induced by apomorphine and methamphetamine,
respectively, in mice. A significant reduction in climbing and stereotyped behaviors
caused by scopoletin and rutin was observed only at a dose 0.1 mg/kg. This study suggests
that scopoletin and rutin can alleviate positive symptoms of schizophrenia only at a
specific dose. Further studies evaluating the effects of scopoletin and rutin on animal
models for negative symptoms of schizophrenia are required for a novel drug discovery in
the treatment of neuropsychiatric diseases.
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Affiliation(s)
- Vijayapandi Pandy
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Kamini Vijeepallam
- Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur 50603, Malaysia
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Pandy V, Narasingam M, Vijeepallam K, Mohan S, Mani V, Mohamed Z. The ethyl acetate fraction of a methanolic extract of unripe noni (Morinda citrifolia Linn.) fruit exhibits a biphasic effect on the dopaminergic system in mice. Exp Anim 2017; 66:283-291. [PMID: 28450692 PMCID: PMC5543249 DOI: 10.1538/expanim.16-0105] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In earlier ex vivo studies, we reported the biphasic effect of a
methanolic extract of unripe Morinda citrifolia fruit (MMC) on
dopamine-induced contractility in isolated rat vas deferens preparations. The present
in vivo study was designed and undertaken to further explore our
earlier ex vivo findings. This study examined the effect of the ethyl
acetate fraction of a methanolic extract of unripe Morinda citrifolia
Linn. fruit (EA-MMC; 5–100 mg/kg, p.o.) on the dopaminergic system using mouse models of
apomorphine-induced climbing time and climbing behavior, methamphetamine-induced
stereotypy (sniffing, biting, gnawing, and licking) and haloperidol-induced catalepsy
using the bar test. Acute treatment with EA-MMC at a low dose (25 mg/kg, p.o.)
significantly attenuated the apomorphine-induced climbing time and climbing behavior in
mice. Similarly, EA-MMC (5 and 10 mg/kg, p.o.) significantly inhibited
methamphetamine-induced stereotyped behavior in mice. These results demonstrated that the
antidopaminergic effect of EA-MMC was observed at relatively lower doses (<25 mg/kg,
p.o.). On the other hand, EA-MMC showed dopaminergic agonistic activity at a high dose
(3,000 mg/kg, p.o.), which was evident from alleviation of haloperidol (a dopamine
D2 blocker)-induced catalepsy in mice. Therefore, it is concluded that EA-MMC
might possess a biphasic effect on the dopaminergic system, i.e., an antagonistic effect
at lower doses (<25 mg/kg, p.o.) and an agonistic effect at higher doses (>1,000
mg/kg, p.o.). However, further receptor-ligand binding assays are necessary to confirm the
biphasic effects of M. citrifolia fruit on the dopaminergic system.
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Affiliation(s)
- Vijayapandi Pandy
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Megala Narasingam
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Kamini Vijeepallam
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Syam Mohan
- Medical Research Centre, Jazan University, Jazan, 11420, Kingdom of Saudi Arabia
| | - Vasudevan Mani
- Department of Pharmacology and Toxicology, College of Pharmacy, Qassim University, P.O. Box 6800, Buraidah, 51452, Kingdom of Saudi Arabia
| | - Zahurin Mohamed
- Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
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Hamid HA, Ramli ANM, Yusoff MM. Indole Alkaloids from Plants as Potential Leads for Antidepressant Drugs: A Mini Review. Front Pharmacol 2017; 8:96. [PMID: 28293192 PMCID: PMC5328930 DOI: 10.3389/fphar.2017.00096] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 02/14/2017] [Indexed: 01/19/2023] Open
Abstract
Depression is the most common illness observed in the elderly, adults, and children. Antidepressants prescribed are usually synthetic drugs and these can sometimes cause a wide range of unpleasant side effects. Current research is focussed on natural products from plants as they are a rich source of potent new drug leads. Besides Hypericum perforatum (St. John’s wort), the plants studied include Passiflora incarnata L. (passion flower), Mitragyna speciosa (kratom), Piper methysticum G. Forst (kava) and Valeriana officinalis L. Harman, harmol, harmine, harmalol and harmaline are indole alkaloids isolated from P. incarnata, while mitragynine is isolated from M. speciosa. The structure of isolated compounds from P. methysticum G. Forst and V. officinalis L. contains an indole moiety. The indole moiety is related to the neurotransmitter serotonin which is widely implicated for brain function and cognition as the endogenous receptor agonist. An imbalance in serotonin levels may influence mood in a way that leads to depression. The moiety is present in a number of antidepressants already on the market. Hence, the objective of this review is to discuss bioactive compounds containing the indole moiety from plants that can serve as potent antidepressants.
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Affiliation(s)
- Hazrulrizawati A Hamid
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang Gambang, Malaysia
| | - Aizi N M Ramli
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang Gambang, Malaysia
| | - Mashitah M Yusoff
- Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang Gambang, Malaysia
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