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Hao YF, Luo T, Lu ZY, Shen CY, Jiang JG. Targets and underlying mechanisms related to the sedative and hypnotic activities of saponins from Rhodiola rosea L. (crassulaceae). Food Funct 2021; 12:10589-10601. [PMID: 34585202 DOI: 10.1039/d1fo01178b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Rhodiola rosea L. (Crassulaceae) are popularly used as a natural supplement for the treatment of insomnia and anxiety. Here, saponin extracts from R. rosea were investigated for their roles on relieving sleeplessness. The levels of neurotransmitters, hormones, and inflammation cytokines in plasma, and the expression of 5-hydroxytryptamine (5-HT), γ-aminobutyric acid (GABA), prostaglandin D2 (PGD2), interleukin-1β (IL-1β) and interleukin-6 (IL-6) in the hypothalamus and hippocampus were detected using ELISA, RT-PCR, and western blotting. First, the butanol fraction extracted from R. rosea was collected as the total saponins (HJT-I), then a saponin-rich fraction (HJT-II) was obtained after the further purification of HJT-I. The saponin contents of HJT-I and HJT-II were 28.92% and 65.69%, respectively. Second, behavioral tests were performed and showed that both HJT-I and HJT-II could effectively reduce the duration of immobility in the tail suspension test, and shorten sleep latency and prolong the sleep duration time in the sodium barbital-induced sleeping test, with HJT-II better than HJT-I. Third, ELLISA results showed that the concentrations of GABA, 5-HT, norepinephrine (NA), PGD2, and IL-1β in plasma were significantly increased after HJT-I and HJT-II administration, while IL-6 was decreased. HJT-I and HJT-II also exhibited differential modulation of the receptors of 5-HT, GABA, PGD2, and IL-1β expression. In hypothalamus, HJT-II was more powerful than HJT-I in regulation of the GABAARα2, GABAARα3, and glutamic acid decarboxylase (GAD) 65/67 expression, as well as 5-HT2A and IL-1β. As for DPR and PGD2, HJT-II was more effective in the hippocampus. The efficacy of HJT-I was better than HJT-II at stimulating GABAARα2, GAD 65/67, 5-HT1A, and IL-1β expression in the hippocampus. In conclusion, the potential sedative and hypnotic effects of HJT-I and HJT-II may possibly be related to the serotonergic, GABAAergic, and immune systems, while the underlying mechanism of HJT-I and HJT-II differed from each other.
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Affiliation(s)
- Yun-Fang Hao
- College of Food and Bioengineering, South China University of Technology, Guangzhou 510640, China.
| | - Ting Luo
- College of Food and Bioengineering, South China University of Technology, Guangzhou 510640, China.
| | - Zhong-Yu Lu
- The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Chun-Yan Shen
- College of Food and Bioengineering, South China University of Technology, Guangzhou 510640, China. .,School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jian-Guo Jiang
- College of Food and Bioengineering, South China University of Technology, Guangzhou 510640, China.
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Brinckmann JA, Cunningham AB, Harter DEV. Running out of time to smell the roseroots: Reviewing threats and trade in wild Rhodiola rosea L. JOURNAL OF ETHNOPHARMACOLOGY 2021; 269:113710. [PMID: 33358852 DOI: 10.1016/j.jep.2020.113710] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2020] [Revised: 11/26/2020] [Accepted: 12/18/2020] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Rhodiola rosea L. has a circumpolar distribution and is used in ethnomedicines of Arctic peoples, as well as in national systems of traditional medicine. Since the late 20th century, global demand for R. rosea has increased steadily, in part due to clinical research supporting new uses in modern phytotherapy. Global supply has been largely obtained from wild populations, which face threats from poorly regulated and destructive exploitation of the rootstocks on an industrial scale. AIM OF THE STUDY To evaluate (i) the conservation status, harvesting and trade levels of R. rosea, in order to determine whether international trade should be monitored, (ii) the current state of experimental and commercial farming and whether cultivation may play a role to take pressure off wild stocks, and (iii) evidence of substitution of other Rhodiola species for R. rosea as an indicator of overexploitation and rarity. MATERIALS AND METHODS We reviewed published studies on R. rosea biology and ecology, as well as information on impacts of wild harvest, on management measures at the national and regional levels, and on the current level of cultivation from across the geographic range of this species. Production and trade data were assessed and analysed from published reports and trade databases, consultations with R. rosea farmers, processors of extracts, and trade experts, but also from government and news reports of illegal harvesting and smuggling. RESULTS AND CONCLUSIONS Our assessment of historical and current data from multiple disciplines shows that future monitoring and protection of R. rosea populations is of time-sensitive importance to the fields of ethnobotany, ethnopharmacology, phytochemistry and phytomedicine. We found that the global demand for R. rosea ingredients and products has been increasing in the 21st century, while wild populations in the main commercial harvesting areas continue to decrease, with conservation issues and reduced supply in some cases. The level of illegal harvesting in protected areas and cross border smuggling is increasing annually coupled with increasing incidences of adulteration and substitution of R. rosea with other wild Rhodiola species, potentially negatively impacting the conservation status of their wild populations, but also an indicator of scarcity of the genuine article. The current data suggests that the historical primary reliance on sourcing from wild populations of R. rosea should transition towards increased sourcing of R. rosea from farms that are implementing conservation oriented sustainable agricultural methods, and that sustainable wild collection standards must be implemented for sourcing from wild populations.
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Affiliation(s)
- J A Brinckmann
- Traditional Medicinals, 4515 Ross Road, Sebastopol, CA, 95472, USA.
| | - A B Cunningham
- School of Life Sciences, University of KwaZulu-Natal, King Edward Avenue, Pietermaritzburg, 3209, South Africa; School of Veterinary and Life Sciences, Murdoch University, 90 South St., Murdoch, WA, 6150, Australia
| | - David E V Harter
- Bundesamt für Naturschutz (BfN), Konstantinstr. 110, Bonn, 53179, Germany
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Murkar A, Cayer C, James J, Durst T, Arnason JT, Sanchez-Vindas PE, Otarola Rojas M, Merali Z. Extract and Active Principal of the Neotropical Vine Souroubea sympetala Gilg. Block Fear Memory Reconsolidation. Front Pharmacol 2019; 10:1496. [PMID: 31956309 PMCID: PMC6951415 DOI: 10.3389/fphar.2019.01496] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Accepted: 11/19/2019] [Indexed: 01/24/2023] Open
Abstract
Background:Souroubea sympetala Gilg. is a neotropical vine native to Central America, investigated as part of a targeted study of the plant family Marcgraviaceae. Our previous research showed that extract of S. sympetala leaf and small branch extract had anxiolytic effects in animals and acts as an agonist for the GABAA receptor at the benzodiazepine binding site. To date, the potential effects of S. sympetala and its constituents on reconsolidation have not been assessed. Reconsolidation, the process by which formed memories are rendered labile and susceptible to change, may offer a window of opportunity for pharmacological manipulation of learned fear. Here, we assessed the effects of S. sympetala crude extract and isolated phytochemicals (orally administered) on the reconsolidation of conditioned fear. In addition, we explored whether betulin (BE), a closely related molecule to betulinic acid (BA, an active principal component of S. sympetala), has effects on reconsolidation of learned fear and whether BE may synergize with BA to enhance attenuation of learned fear. Method: Male Sprague–Dawley rats received six 1.0-mA continuous foot shocks (contextual training). Twenty-four hours later, rats were re-exposed to the context (but in the absence of foot shocks). Immediately following memory retrieval (recall), rats received oral administration of S. sympetala extract at various doses (8–75 mg/kg) or diazepam (1 mg/kg). In separate experiments, we compared the effects of BA (2 mg/kg), BE (2 mg/kg), and BA + BE (2 mg/kg BA + 2 mg/kg BE). The freezing response was assessed either 24 h later (day 3) or 5 days later (day 7). Effects of phytochemicals on fear expression were also explored using the elevated plus maze paradigm. Results:S. sympetala leaf extract significantly attenuated the reconsolidation of contextual fear at the 25- and 75-mg/kg doses, but not at the 8-mg/kg dose. Furthermore, BA + BE, but not BA or BE alone, attenuated the reconsolidation of learned fear and exerted an anxiolytic-like effect on fear expression.
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Affiliation(s)
- Anthony Murkar
- The Royal's Institute of Mental Health Research affiliated with the University of Ottawa , Ottawa, ON, Canada.,School of Psychology, University of Ottawa, Ottawa, ON, Canada
| | - Christian Cayer
- The Royal's Institute of Mental Health Research affiliated with the University of Ottawa , Ottawa, ON, Canada.,School of Psychology, University of Ottawa, Ottawa, ON, Canada.,Centre for Advanced Research in Environmental Genomics, Ottawa-Carleton Institute of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Jon James
- The Royal's Institute of Mental Health Research affiliated with the University of Ottawa , Ottawa, ON, Canada
| | - Tony Durst
- Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada.,Department of Chemistry and Biomolecular Sciences, University of Ottawa, Ottawa, ON, Canada
| | - John T Arnason
- Centre for Advanced Research in Environmental Genomics, Ottawa-Carleton Institute of Biology, University of Ottawa, Ottawa, ON, Canada
| | | | - M Otarola Rojas
- Herbario Juvenal Valerio Rodriguez, Universidad Nacional, Heredia, Costa Rica
| | - Zul Merali
- The Royal's Institute of Mental Health Research affiliated with the University of Ottawa , Ottawa, ON, Canada.,School of Psychology, University of Ottawa, Ottawa, ON, Canada.,Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, ON, Canada
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Paquin V, Sandy G, Perrault-Sullivan G, Fortin G, Cauchon M, Fletcher C, Ouellet J, Lemire M. Twenty "must-read" research articles for primary care providers in Nunavik: scoping study and development of an information tool. Int J Circumpolar Health 2019; 78:1578638. [PMID: 30831057 PMCID: PMC6407590 DOI: 10.1080/22423982.2019.1578638] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 01/21/2019] [Accepted: 01/28/2019] [Indexed: 01/01/2023] Open
Abstract
While health needs in Nunavik are distinct, there is a scarcity of knowledge transfer intended for local primary care providers. We aimed to build an information tool in the form of a newsletter and a website to share with them a selection of relevant research articles. To identify such articles, a scoping study of Inuit health research published between 2012 and 2017 was conducted. Selection criteria were adapted from the framework of information mastery. After a database search yielding 2896 results, publications were screened for eligibility. Next, the 226 eligible articles were evaluated and scored for their relevance, their methods (including community participation), their local applicability and their clinical utility. The 20 highest-scored articles were selected for dissemination in a newsletter. They were summarised and presented in 6 thematic emails: Child Development, Infectious Diseases, Traditional and Modern Medicine, Metabolism, Nutrition and Contaminants, and Inuit Perspectives. The newsletter was sent to over 190 health workers and regional stakeholders in Nunavik and was also published online. We hope that this project will foster knowledge sharing and inter-sectorial collaboration between research, public health and clinical care. Trends in Inuit health research are discussed.
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Affiliation(s)
- Vincent Paquin
- Axe santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, QC, Canada
| | - Glenda Sandy
- Axe santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, QC, Canada
| | - Gentiane Perrault-Sullivan
- Axe santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, QC, Canada
| | - Gabriel Fortin
- Medical Department, Inuulitsivik Health Center, Inukjuak, QC, Canada
| | - Michel Cauchon
- Département de médecine familiale et de médecine d’urgence, Université Laval, Québec, QC, Canada
| | - Christopher Fletcher
- Axe santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, QC, Canada
- Département de médecine sociale et préventive, Université Laval, Québec, QC, Canada
| | - Jean Ouellet
- Département de médecine familiale et de médecine d’urgence, Université Laval, Québec, QC, Canada
| | - Mélanie Lemire
- Axe santé des populations et pratiques optimales en santé, Centre de recherche du CHU de Québec, Université Laval, Québec, QC, Canada
- Département de médecine sociale et préventive, Université Laval, Québec, QC, Canada
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Tao H, Wu X, Cao J, Peng Y, Wang A, Pei J, Xiao J, Wang S, Wang Y. Rhodiola
species: A comprehensive review of traditional use, phytochemistry, pharmacology, toxicity, and clinical study. Med Res Rev 2019; 39:1779-1850. [PMID: 30652331 DOI: 10.1002/med.21564] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 11/23/2018] [Accepted: 12/31/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Hongxun Tao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao; China
| | - Xu Wu
- Laboratory of Molecular Pharmacology, Department of Pharmacology, School of Pharmacy, Southwest Medical University; Luzhou Sichuan China
| | - Jiliang Cao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao; China
| | - Yu Peng
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao; China
| | - Anqi Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao; China
| | - Jin Pei
- State Key Laboratory Breeding Base of Systematic Research, Development and Utilization of Chinese Medicine Resources, Development and Utilization of Chinese Medicine Resources, College of Pharmacy, Chengdu University of Traditional Chinese Medicine; Chengdu Sichuan China
| | - Jianbo Xiao
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao; China
| | - Shengpeng Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao; China
| | - Yitao Wang
- State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao; China
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Merali Z, Cayer C, Kent P, Liu R, Cal V, Harris CS, Arnason JT. Sacred Maya incense, copal (Protium copal - Burseraceae), has antianxiety effects in animal models. JOURNAL OF ETHNOPHARMACOLOGY 2018; 216:63-70. [PMID: 29414121 DOI: 10.1016/j.jep.2018.01.027] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/10/2018] [Accepted: 01/21/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Maya have traditionally used copal, Protium copal, as incense during ceremonies since pre-Columbian times. Anecdotally, copal (when burned as incense), is thought to elicit mentally uplifting and calming effects. The main objective of this study was to determine whether the incense elicits anxiolytic-like behavior in animal models using rats. A second objective was to characterize active constituents and discern potential mechanism(s) of action, specifically the involvement of the GABAergic and endocannabinoid (eCB) systems. Despite the extensive Central American use of this resin, there are currently no known scientific behavioral or pharmacological studies done with the incense. MATERIALS AND METHODS Quantification of the triterpenes in the copal resin and cold trapped incense was achieved by HPLC MS. Behavioral effects in rats were assessed using the elevated plus maze (EPM), social interaction (SI) test, conditioned emotion response (CER) and Novel object recognition (NOR) paradigms. Rats were exposed to burning copal (200 mg) over 5 min in a smoking chamber apparatus and then immediately tested in each behavioral paradigm. Follow-up SI tests were done using two antagonists flumazenil (1 mg/kg) and AM251 (1 mg/kg) administered systemically. Inhibition of MAGL (monoacylglycerol lipase) was measured by microplate assay with recombinant human enzyme and probe substrate. RESULTS Phytochemical analysis revealed that copal resin and incense had high α- and β-amyrins and low lupeol triterpene content. Exposure to Protium copal incense significantly reduced anxiety-like behavior in the SI and CER tests. In contrast, no anxiolytic effects were observed in the EPM. The CER effect was time dependent. Both flumazenil and AM251 blocked the anxiolytic activity of copal revealing the involvement of GABAergic and endocannabinoid systems. Copal, as well as the identified triterpenes, potently inhibited monoacylglycerol lipase (MAGL) activity in vitro (IC50 ≤ 811 ng/mL). CONCLUSIONS This is the first study to show that copal incense from Protium copal elicits anxiolytic-like effects in fear and social interaction models as evidenced by a reduced learned fear behavior and an increase in active social interaction. It's high α and β-amyrin content suggests behavioral effects may be mediated, in part, by the known action of these terpenes at the benzodiazepine receptor. Furthermore, P. copal's observed activity through the eCB system via MAGL offers a new potential mechanism underlying the anxiolytic activity.
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MESH Headings
- Animals
- Anti-Anxiety Agents/isolation & purification
- Anti-Anxiety Agents/pharmacology
- Anxiety/metabolism
- Anxiety/prevention & control
- Anxiety/psychology
- Behavior, Animal/drug effects
- Burseraceae/chemistry
- Carrier Proteins/drug effects
- Carrier Proteins/metabolism
- Ceremonial Behavior
- Disease Models, Animal
- Endocannabinoids/metabolism
- Enzyme Inhibitors/isolation & purification
- Enzyme Inhibitors/pharmacology
- Exploratory Behavior/drug effects
- Fear/drug effects
- Flumazenil/pharmacology
- Humans
- Male
- Maze Learning/drug effects
- Monoacylglycerol Lipases/antagonists & inhibitors
- Monoacylglycerol Lipases/metabolism
- Phytotherapy
- Piperidines/pharmacology
- Plant Extracts/isolation & purification
- Plant Extracts/pharmacology
- Plants, Medicinal
- Pyrazoles/pharmacology
- Rats, Sprague-Dawley
- Receptor, Cannabinoid, CB1/drug effects
- Receptor, Cannabinoid, CB1/metabolism
- Receptors, GABA-A/drug effects
- Receptors, GABA-A/metabolism
- Resins, Plant/chemistry
- Resins, Plant/pharmacology
- Signal Transduction/drug effects
- Social Behavior
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Affiliation(s)
- Zul Merali
- Royal's Institute of Mental Health Research, University of Ottawa, Ottawa, ON, Canada K1Z 6K4; School of Psychology, University of Ottawa, Ottawa, ON, Canada K1N 6N5; Scientific Director of Canadian Depression Research & Intervention Network (CDRIN), Canada
| | - Christian Cayer
- Royal's Institute of Mental Health Research, University of Ottawa, Ottawa, ON, Canada K1Z 6K4; School of Psychology, University of Ottawa, Ottawa, ON, Canada K1N 6N5; Scientific Director of Canadian Depression Research & Intervention Network (CDRIN), Canada
| | - Pamela Kent
- Royal's Institute of Mental Health Research, University of Ottawa, Ottawa, ON, Canada K1Z 6K4; School of Psychology, University of Ottawa, Ottawa, ON, Canada K1N 6N5; Scientific Director of Canadian Depression Research & Intervention Network (CDRIN), Canada
| | - Rui Liu
- Ottawa-Carleton Institute of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5
| | - Victor Cal
- Belize Indigenous Training Institute, Punta Gorda, Belize
| | - Cory S Harris
- Ottawa-Carleton Institute of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5.
| | - John T Arnason
- Ottawa-Carleton Institute of Biology, University of Ottawa, Ottawa, ON, Canada K1N 6N5.
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Palmeri A, Mammana L, Tropea MR, Gulisano W, Puzzo D. Salidroside, a Bioactive Compound of Rhodiola Rosea, Ameliorates Memory and Emotional Behavior in Adult Mice. J Alzheimers Dis 2017; 52:65-75. [PMID: 26967223 DOI: 10.3233/jad-151159] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Rhodiola Rosea (R. Rosea) is a plant used in traditional popular medicine to enhance cognition and physical performance. R. Rosea medicinal properties have been related to its capability to act as an adaptogen, i.e., a substance able to increase the organism's resistance to a variety of chemical, biological, and physical stressors in a non-specific way. These adaptogen properties have been mainly attributed to the glycoside salidroside, one of the bioactive compounds present in the standardized extracts of R. Rosea. Here, we aimed to investigate whether a single dose of salidroside is able to affect memory and emotional behavior in wild type adult mice. We performed fear conditioning to assess cued and contextual memory, elevated plus maze and open field to evaluate anxiety, and tail suspension test to evaluate depression. Our results showed that a single i.p. administration of salidroside was able to enhance fear memory and exerted an anxiolytic and antidepressant effect. These data confirmed the adaptogenic effect of R. Rosea bioactive compounds in animal models and suggest that salidroside might represent an interesting pharmacological tool to ameliorate cognition and counteract mood disorders.
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Mullally M, Cayer C, Muhammad A, Walshe-Roussel B, Ahmed F, Sanchez-Vindas PE, Otarola Rojas M, Merali Z, Cal V, Durst T, Trudeau VL, Arnason JT. Anxiolytic activity and active principles of Piper amalago (Piperaceae), a medicinal plant used by the Q'eqchi' Maya to treat susto, a culture-bound illness. JOURNAL OF ETHNOPHARMACOLOGY 2016; 185:147-154. [PMID: 26972506 DOI: 10.1016/j.jep.2016.03.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2015] [Revised: 03/01/2016] [Accepted: 03/07/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The medicinal plant, Piper amalago L. (Piperaceae), is used traditionally by Q'eqchi' Maya healers for the treatment of "susto" a culture-bound syndrome. Previous research suggests that susto symptoms may be a manifestation of anxiety. The objectives were to characterize the effect of ethanolic extract of P. amalago in behavioral assays of anxiety at doses representative of traditional use and to isolate active principles. MATERIALS AND METHODS Rats treated orally with low dose ethanolic extracts of P. amalago leaves (8-75mg/kg) were tested in several behavioral paradigms including the elevated plus maze (EPM), social interaction (SI), and conditioned emotional response (CER) tests, and compared to diazepam, a positive control. The active anxiolytic principle was isolated by bioassay guided isolation using an in vitro GABAA competitive binding assay. RESULTS Extracts had significant anxiolytic activity in all behavioral tests, with the strongest activity in the SI and the CER paradigms. In an in vitro GABAA competitive binding assay, a 66.5µg/mL concentration of P. amalago ethanol extract displaced 50% of the GABAA-BZD receptor ligand [(3)H]-Flunitrazepam. Bioassay-guided fractionation identified a furofuran lignan, a molecule with structural similarity to yangambin, with high affinity for the GABAA-BZD receptor as the principle bioactive. CONCLUSION The results suggest that the ethnobotanical use of this plant may have a pharmacological basis in its anxiolytic activity, as demonstrated in animal behaviour tests.
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Affiliation(s)
- M Mullally
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
| | - C Cayer
- University of Ottawa Institute of Mental Health Research, University of Ottawa, Ottawa, ON, Canada; School of Psychology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
| | - A Muhammad
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
| | - B Walshe-Roussel
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
| | - F Ahmed
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
| | - P E Sanchez-Vindas
- JVR Herbarium, Campus Omar Dengo, Universidad Nacional, Heredia, Costa Rica
| | - M Otarola Rojas
- JVR Herbarium, Campus Omar Dengo, Universidad Nacional, Heredia, Costa Rica
| | - Z Merali
- University of Ottawa Institute of Mental Health Research, University of Ottawa, Ottawa, ON, Canada; School of Psychology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
| | - V Cal
- Belize Indigenous Training Institute, Punta Gorda, Belize
| | - T Durst
- Department of Chemistry, University of Ottawa, ON, K1N 6N5 Canada
| | - V L Trudeau
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada
| | - J T Arnason
- Department of Biology, University of Ottawa, Ottawa, ON, K1N 6N5 Canada.
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Beaulieu F, Cuerrier A, Filion V, Saleem A, Arnason J. A gall mite,Aceria rhodiolae(Acari: Eriophyidae), altering the phytochemistry of a medicinal plant,Rhodiola rosea(Crassulaceae), in the Canadian Arctic. J NAT HIST 2015. [DOI: 10.1080/00222933.2015.1103910] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Cropley M, Banks AP, Boyle J. The Effects ofRhodiola roseaL. Extract on Anxiety, Stress, Cognition and Other Mood Symptoms. Phytother Res 2015; 29:1934-9. [DOI: 10.1002/ptr.5486] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 07/30/2015] [Accepted: 09/15/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Mark Cropley
- School of Psychology; University of Surrey; Guildford Surrey UK
| | - Adrian P. Banks
- School of Psychology; University of Surrey; Guildford Surrey UK
| | - Julia Boyle
- School of Biosciences and Medicine; University of Surrey; Guildford Surrey UK
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