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Kumrungsee T. Is hepatic GABA transaminase a promising target for obesity and epilepsy treatments? Biosci Biotechnol Biochem 2024; 88:839-849. [PMID: 38749549 DOI: 10.1093/bbb/zbae066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 05/05/2024] [Indexed: 07/23/2024]
Abstract
γ-Aminobutyric acid (GABA) transaminase (GABA-T) is a GABA-degrading enzyme that plays an essential role in regulating GABA levels and maintaining supplies of GABA. Although GABA in the mammalian brain was discovered 70 years ago, research on GABA and GABA-T has predominantly focused on the brain. Notwithstanding the high activity and expression of GABA-T in the liver, the exact functions of GABA-T in the liver remain unknown. This article reviews the up-to-date information on GABA-T in the liver. It presents recent findings on the role of liver GABA-T in food intake suppression and appetite regulation. Finally, the potential functions of liver GABA-T in other neurological diseases, natural GABA-T inhibitors, and future perspectives in this research area are discussed.
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Affiliation(s)
- Thanutchaporn Kumrungsee
- Program of Food and AgriLife Science, Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, Japan
- Smart Agriculture, Graduate School of Innovation and Practice for Smart Society, Hiroshima University, Hiroshima, Japan
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Malaník M, Čulenová M, Sychrová A, Skiba A, Skalicka-Woźniak K, Šmejkal K. Treating Epilepsy with Natural Products: Nonsense or Possibility? Pharmaceuticals (Basel) 2023; 16:1061. [PMID: 37630977 PMCID: PMC10459181 DOI: 10.3390/ph16081061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 07/19/2023] [Accepted: 07/21/2023] [Indexed: 08/27/2023] Open
Abstract
Epilepsy is a neurological disease characterized by recurrent seizures that can lead to uncontrollable muscle twitching, changes in sensitivity to sensory perceptions, and disorders of consciousness. Although modern medicine has effective antiepileptic drugs, the need for accessible and cost-effective medication is urgent, and products derived from plants could offer a solution. For this review, we have focused on natural compounds that have shown anticonvulsant activity in in vivo models of epilepsy at relevant doses. In some cases, the effects have been confirmed by clinical data. The results of our search are summarized in tables according to their molecular targets. We have critically evaluated the data we present, identified the most promising therapeutic candidates, and discussed these in the text. Their perspectives are supported by both pharmacokinetic properties and potential interactions. This review is intended to serve as a basis for future research into epilepsy and related disorders.
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Affiliation(s)
- Milan Malaník
- Department of Natural Drugs, Faculty of Pharmacy, Masaryk University, Palackého 1946/1, 61200 Brno, Czech Republic; (A.S.); (K.Š.)
| | - Marie Čulenová
- Department of Natural Drugs, Faculty of Pharmacy, Masaryk University, Palackého 1946/1, 61200 Brno, Czech Republic; (A.S.); (K.Š.)
| | - Alice Sychrová
- Department of Natural Drugs, Faculty of Pharmacy, Masaryk University, Palackého 1946/1, 61200 Brno, Czech Republic; (A.S.); (K.Š.)
| | - Adrianna Skiba
- Department of Natural Products Chemistry, Faculty of Pharmacy, Medical University of Lublin, 1 Chodzki Str., 20-093 Lublin, Poland; (A.S.); (K.S.-W.)
| | - Krystyna Skalicka-Woźniak
- Department of Natural Products Chemistry, Faculty of Pharmacy, Medical University of Lublin, 1 Chodzki Str., 20-093 Lublin, Poland; (A.S.); (K.S.-W.)
| | - Karel Šmejkal
- Department of Natural Drugs, Faculty of Pharmacy, Masaryk University, Palackého 1946/1, 61200 Brno, Czech Republic; (A.S.); (K.Š.)
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Amaryllidaceae, Lycopodiaceae Alkaloids and Coumarins—A Comparative Assessment of Safety and Pharmacological Activity. J Clin Med 2022; 11:jcm11154291. [PMID: 35893381 PMCID: PMC9332316 DOI: 10.3390/jcm11154291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/20/2022] [Accepted: 07/21/2022] [Indexed: 11/18/2022] Open
Abstract
The study aimed to evaluate the safety and pharmacological activity Amaryllidaceae, Lycopodiaceae alkaloids and coumarins obtained from Narcissus triandrus L., Lycopodium clavatum L., Lycopodium annotinum L., Huperzia selago L. and Angelica dahurica (Hoffm.) Benth. & Hook.f. ex Franch. & Sav. In the in vivo studies. The influence of the tested compounds on the central nervous system of rats was assessed in behavioral tests (locomotor activity, Y-maze, passive avoidance). In order to investigate the mechanisms of action, biochemical determinations were performed (AChE activity, BChE activity, IL-1β, IL-6 concentration). In order to assess safety, the concentrations of AST, ALT, GGT and urea and creatinine were determined. The results of the conducted studies indicate a high safety profile of the tested compounds. Behavioral tests showed that they significantly improved rodent memory in a passive avoidance test. The results of biochemical studies showed that by reducing the activity of AChE and BChE and lowering the concentration of IL-1β and IL-6, the coumarin-rich Angelica dahurica extract shows the most promising potential for future therapeutic AD strategies.
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Zhao H, Feng YL, Wang M, Wang JJ, Liu T, Yu J. The Angelica dahurica: A Review of Traditional Uses, Phytochemistry and Pharmacology. Front Pharmacol 2022; 13:896637. [PMID: 35847034 PMCID: PMC9283917 DOI: 10.3389/fphar.2022.896637] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
Angelica dahurica (A. dahurica) root is a famous edible medicinal herb that has been used in China for thousands of years. To date, more than 300 chemical constituents have been discovered from A. dahurica. Among these ingredients, coumarins and volatile oils are the major active compounds. Moreover, a few other compounds have also been isolated from the root of A. dahurica, such as alkaloids, phenols, sterols, benzofurans, polyacetylenes and polysaccharides. Modern pharmacological studies demonstrated that the root of A. dahurica and its active components displayed various bioactivities such as anti-inflammation, anti-tumor, anti-oxidation, analgesic activity, antiviral and anti-microbial effects, effects on the cardiovascular system, neuroprotective function, hepatoprotective activity, effects on skin diseases and so on. Based on these studies, this review focused on the research publications of A. dahurica and aimed to summarize the advances in the traditional uses, phytochemistry and pharmacology which will provide reference for the further studies and applications of A. dahurica.
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Affiliation(s)
- Hui Zhao
- Clinical Experimental Center, Xi’an International Medical Center Hospital, Xi’an, China
- Xi’an Engineering Technology Research Center for Cardiovascular Active Peptides, Xi’an, China
| | - Ya-Long Feng
- School of Chemistry and Chemical Engineering, Xianyang Normal University, Xianyang, China
| | - Ming Wang
- College of Food Science and Engineering, Northwest University, Xi’an, China
| | - Jing-Jing Wang
- Biomedicine Key Laboratory of Shaanxi Province, College of Life Science, Northwest University, Xi’an, China
| | - Tian Liu
- Clinical Experimental Center, Xi’an International Medical Center Hospital, Xi’an, China
- Xi’an Engineering Technology Research Center for Cardiovascular Active Peptides, Xi’an, China
| | - Jun Yu
- Clinical Experimental Center, Xi’an International Medical Center Hospital, Xi’an, China
- Xi’an Engineering Technology Research Center for Cardiovascular Active Peptides, Xi’an, China
- *Correspondence: Jun Yu,
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Huh E, Kwon Y, Choi JG, Lim MG, Jeong JS, Park AY, Kim JH, Pak YK, Hong SP, Oh MS. DA-9805, a Herbal Mixture, Restores Motor Manifestations in 6-Hydroxydopamine-induced Parkinson’s Disease Mouse Model by Regulating Striatal Dopamine and Acetylcholine Levels. Front Pharmacol 2022; 13:903664. [PMID: 35784731 PMCID: PMC9240257 DOI: 10.3389/fphar.2022.903664] [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: 03/24/2022] [Accepted: 05/24/2022] [Indexed: 11/23/2022] Open
Abstract
Loss of dopamine (DA) is one of the primary features of Parkinson’s disease (PD); however, imbalances of non-dopaminergic neurotransmitters significantly contribute to the disabilities noted in advanced PD patients. DA-9805 is the ethanolic extraction of the root bark of Paeonia × suffruticosa Andrews (Paeoniaceae), the root of Angelica dahurica (Hoffm.) Benth. and Hook.f. ex Franch. and Sav. (Apiaceae) and the root of Bupleurum falcatum L. (Apiaceae), which have been widely utilized as an enhancer of motor function in East Asia. This study aimed to investigate whether DA-9805 modified motor dysfunctions and imbalances associated with DA and other neurotransmitters in a 6-hydroxydopamine-induced PD mouse. We confirmed the expressions of proteins related with neurotransmissions in the striatum. In addition, we measured the striatal neurotransmitters using HPLC and analyzed their correlation. DA-9805 significantly improved motor impairments and restored the altered levels of neurotransmitters in the striatum. Moreover, DA-9805 improved the altered expressions of tyrosine hydroxylase (TH), DA transporter, and choline acetyltransferase (ChAT) in the ipsilateral part of mouse striatum or SNpc, which implies the neuroprotection. We also found that the level of striatal acetylcholine (Ach) has the moderate negative correlation with motor functions and TH expression in the SNpc. This study indicates that DA-9805 restores motor dysfunctions by normalizing the increased levels of striatal Ach via modulating DA transmission and ChAT expressions as well as its neuroprotective effects.
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Affiliation(s)
- Eugene Huh
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Youngji Kwon
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Jin Gyu Choi
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, South Korea
| | - Myung Gyu Lim
- Department of Oriental Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
| | | | | | - Jeong Hee Kim
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Youngmi Kim Pak
- Medical Research Center for Bioreaction to Reactive Oxygen Species and Biomedical Science Institute, Department of Physiology, College of Medicine, Kyung Hee University, Seoul, South Korea
| | - Seon-Pyo Hong
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, South Korea
- Department of Oriental Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
| | - Myung Sook Oh
- Department of Oriental Pharmaceutical Science, College of Pharmacy, Kyung Hee University, Seoul, South Korea
- Department of Life and Nanopharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
- Department of Biochemical and Pharmaceutical Sciences, Graduate School, Kyung Hee University, Seoul, South Korea
- *Correspondence: Myung Sook Oh,
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Zagaja M, Zagaja A, Szala-Rycaj J, Szewczyk A, Lemieszek MK, Raszewski G, Andres-Mach M. Influence of Umbelliferone on the Anticonvulsant and Neuroprotective Activity of Selected Antiepileptic Drugs: An In Vivo and In Vitro Study. Int J Mol Sci 2022; 23:ijms23073492. [PMID: 35408852 PMCID: PMC8999126 DOI: 10.3390/ijms23073492] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Revised: 03/17/2022] [Accepted: 03/21/2022] [Indexed: 02/04/2023] Open
Abstract
Umbelliferone (7-hydroxycoumarin; UMB) is a coumarin with many biological properties, including antiepileptic activity. This study evaluated the effect of UMB on the ability of classical and novel antiepileptic drugs (e.g., lacosamide (LCM), levetiracetam (LEV), phenobarbital (PB) and valproate (VPA)) to prevent seizures evoked by the 6-Hz corneal-stimulation-induced seizure model. The study also evaluated the influence of this coumarin on the neuroprotective properties of these drugs in two in vitro models of neurodegeneration, including trophic stress and excitotoxicity. The results indicate that UMB (100 mg/kg, i.p.) significantly enhanced the anticonvulsant action of PB (p < 0.01) and VPA (p < 0.05), but not that of LCM orLEV, in the 6-Hz test. Whether alone or in combination with other anticonvulsant drugs (at their ED50 values from the 6-Hz test), UMB (100 mg/kg) did not affect motor coordination; skeletal muscular strength and long-term memory, as determined in the chimney; grip strength; or passive avoidance tests, respectively. Pharmacokinetic characterization revealed that UMB had no impact on total brain concentrations of PB or VPA in mice. The in vitro study indicated that UMB has neuroprotective properties. Administration of UMB (1 µg/mL), together with antiepileptic drugs, mitigated their negative impact on neuronal viability. Under trophic stress (serum deprivation) conditions, UMB enhanced the neurotrophic abilities of all the drugs used. Moreover, this coumarin statistically enhanced the neuroprotective effects of PB (p < 0.05) and VPA (p < 0.001) in the excitotoxicity model of neurodegeneration. The obtained results clearly indicate a positive effect of UMB on the anticonvulsant and neuroprotective properties of the selected drugs.
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Affiliation(s)
- Mirosław Zagaja
- Isobolographic Analysis Laboratory, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland; (J.S.-R.); (A.S.); (M.A.-M.)
- Correspondence: (M.Z.); (A.Z.); Tel.: +48-81-718-4549 (M.Z.); +48-81-448-6850 (A.Z.)
| | - Anna Zagaja
- Chair and Department of Humanities and Social Medicine, Medical University of Lublin, Chodźki 7, 20-090 Lublin, Poland
- Correspondence: (M.Z.); (A.Z.); Tel.: +48-81-718-4549 (M.Z.); +48-81-448-6850 (A.Z.)
| | - Joanna Szala-Rycaj
- Isobolographic Analysis Laboratory, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland; (J.S.-R.); (A.S.); (M.A.-M.)
| | - Aleksandra Szewczyk
- Isobolographic Analysis Laboratory, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland; (J.S.-R.); (A.S.); (M.A.-M.)
| | - Marta Kinga Lemieszek
- Department of Medical Biology, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland;
| | - Grzegorz Raszewski
- Department of Toxicology and Food Protection, Institute of Rural Health, Jaczewskiego 2, 20-950 Lublin, Poland;
| | - Marta Andres-Mach
- Isobolographic Analysis Laboratory, Institute of Rural Health, Jaczewskiego 2, 20-090 Lublin, Poland; (J.S.-R.); (A.S.); (M.A.-M.)
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Sandhir R, Khurana M, Singhal NK. Potential benefits of phytochemicals from Azadirachta indica against neurological disorders. Neurochem Int 2021; 146:105023. [PMID: 33753160 DOI: 10.1016/j.neuint.2021.105023] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 03/12/2021] [Accepted: 03/14/2021] [Indexed: 12/16/2022]
Abstract
Azadirachta indica or Neem has been extensively used in the Indian traditional medical system because of its broad range of medicinal properties. Neem contains many chemically diverse and structurally complex phytochemicals such as limonoids, flavonoids, phenols, catechins, gallic acid, polyphenols, nimbins. These phytochemicals possess vast array of therapeutic activities that include anti-feedant, anti-viral, anti-malarial, anti-bacterial, anti-cancer properties. In recent years, many phytochemicals from Neem have been shown to be beneficial against various neurological disorders like Alzheimer's and Parkinson's disease, mood disorders, ischemic-reperfusion injury. The neuroprotective effects of the phytochemicals from Neem are primarily mediated by their anti-oxidant, anti-inflammatory and anti-apoptotic activities along with their ability to modulate signaling pathways. However, extensive studies are still required to fully understand the molecular mechanisms involved in neuropotective effects of phytochemicals from Neem. This review is an attempt to cover the neuroprotective properties of various phytochemicals from Neem along with their mechanism of action so that the potential of the compounds could be realized to reduce the burden of neurodegenerative diseases.
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Affiliation(s)
- Rajat Sandhir
- Department of Biochemistry, Basic Medical Science Block-II, Panjab University, Chandigarh, 160014, India.
| | - Mehak Khurana
- Department of Biochemistry, Basic Medical Science Block-II, Panjab University, Chandigarh, 160014, India
| | - Nitin Kumar Singhal
- National Agri-Food Biotechnology Institute (NABI) Sector-81 (Knowledge City), PO Manauli, S.A.S. Nagar, Mohali, 140306, Punjab, India
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Maciąg M, Michalak A, Skalicka-Woźniak K, Zykubek M, Ciszewski A, Budzyńska B. Zebrafish and mouse models for anxiety evaluation - A comparative study with xanthotoxin as a model compound. Brain Res Bull 2020; 165:139-145. [PMID: 33049351 DOI: 10.1016/j.brainresbull.2020.09.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 08/21/2020] [Accepted: 09/30/2020] [Indexed: 02/06/2023]
Abstract
The ever-present trend for introducing new drugs of natural origin with anxiolytic properties meets healthcare needs of the population, whose almost 34 % struggles with anxiety-related disorders. At the same time, animal assays that could serve as fast and reliable models of anxiety-like behaviors are of great interest to scientists. Thus, the aim of the present study was to evaluate the utility of the zebrafish model for assessing the influence of natural compounds on anxiety in comparison with the well-known mouse model. Secondly, this study is also the first attempt to investigate the influence of a naturally occurring metabolite, i.e. xanthotoxin, on anxiety-related behaviors. The anxiety level in zebrafish was assessed by measuring thigmotaxis, a specific animal behavior to move closer to the boundaries of an open area and to avoid its center. In mice, the elevated plus maze test was chosen to study anxiety-related behaviors. Our results show that xanthotoxin exerted reversed U-shape effect on anxiety behaviors in both models. The similar pattern of xanthotoxin-induced anxiety-related behaviors in both animal models not only confirms the pharmacological properties of xanthotoxin but also proves the predictive power of the zebrafish model for behavioral research of natural compounds.
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Affiliation(s)
- Monika Maciąg
- Independent Laboratory of Behavioral Studies, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland; Department of Biopharmacy, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland
| | - Agnieszka Michalak
- Independent Laboratory of Behavioral Studies, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland
| | - Krystyna Skalicka-Woźniak
- Independent Laboratory of Natural Products Chemistry, Medical University of Lublin, 1 Chodzki Street, 20-093 Lublin, Poland
| | - Maria Zykubek
- Independent Laboratory of Behavioral Studies, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland
| | - Andrzej Ciszewski
- Department of Paediatric Orthopaedics and Rehabilitation, Medical University of Lublin, 6 Gębali Street, 20-093 Lublin, Poland
| | - Barbara Budzyńska
- Independent Laboratory of Behavioral Studies, Medical University of Lublin, 4a Chodzki Street, 20-093 Lublin, Poland.
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Bruni R, Barreca D, Protti M, Brighenti V, Righetti L, Anceschi L, Mercolini L, Benvenuti S, Gattuso G, Pellati F. Botanical Sources, Chemistry, Analysis, and Biological Activity of Furanocoumarins of Pharmaceutical Interest. Molecules 2019; 24:E2163. [PMID: 31181737 PMCID: PMC6600687 DOI: 10.3390/molecules24112163] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 06/04/2019] [Accepted: 06/06/2019] [Indexed: 12/12/2022] Open
Abstract
The aim of this work is to provide a critical review of plant furanocoumarins from different points of view, including their chemistry and biosynthetic pathways to their extraction, analysis, and synthesis, to the main biological activities found for these active compounds, in order to highlight their potential within pharmaceutical science. The limits and the possible improvements needed for research involving these molecules are also highlighted and discussed.
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Affiliation(s)
- Renato Bruni
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| | - Davide Barreca
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy.
| | - Michele Protti
- Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.
| | - Virginia Brighenti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy.
| | - Laura Righetti
- Department of Food and Drug, University of Parma, Parco Area delle Scienze 27/A, 43124 Parma, Italy.
| | - Lisa Anceschi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy.
| | - Laura Mercolini
- Department of Pharmacy and Biotechnology (FaBiT), Alma Mater Studiorum, University of Bologna, Via Belmeloro 6, 40126 Bologna, Italy.
| | - Stefania Benvenuti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy.
| | - Giuseppe Gattuso
- Department of Chemical, Biological, Pharmaceutical and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres 31, 98166 Messina, Italy.
| | - Federica Pellati
- Department of Life Sciences, University of Modena and Reggio Emilia, Via G. Campi 103, 41125 Modena, Italy.
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Bryda J, Zagaja M, Szewczyk A, Andres-Mach M. Coumarins as potential supportive medication for the treatment of epilepsy. Acta Neurobiol Exp (Wars) 2019. [DOI: 10.21307/ane-2019-011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Biomolecular Targets of Oxyprenylated Phenylpropanoids and Polyketides. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2019; 108:143-205. [PMID: 30924014 DOI: 10.1007/978-3-030-01099-7_2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oxyprenylated secondary metabolites (e.g. phenylpropanoids and polyketides) represent a rare class of natural compounds. Over the past two decades, this group of phytochemicals has become a topic of intense research activity by several teams worldwide due to their in vitro and in vivo pharmacological activities, and to their great therapeutic and nutraceutical potential for the chemoprevention of acute and chronic diseases affecting humans. Such investigations have provided evidence that oxyprenylated secondary metabolites are able to interact with several biological targets at different levels accounting for their observed anticarcinogenic, anti-inflammatory, neuroprotective, immunomodulatory, antihypertensive, and metabolic effects. The aim of the present contribution is to provide a detailed survey of the so far reported data on the capacities of selected oxyprenylated phenylpropanoids and polyketides to trigger receptors, enzymes, and other types of cellular factors for which they exhibit a high degree of affinity and therefore evoke specific responses. With respect to the rather small amounts of these compounds available from natural sources, their chemical synthesis is also highlighted.
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Blood-to-Retina Transport of Imperatorin Involves the Carrier-Mediated Transporter System at the Inner Blood-Retinal Barrier. J Pharm Sci 2018; 108:1619-1626. [PMID: 30528198 DOI: 10.1016/j.xphs.2018.11.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 11/22/2018] [Accepted: 11/27/2018] [Indexed: 12/16/2022]
Abstract
This study investigated the mechanism of transporting imperatorin across the inner blood-retinal barrier (iBRB). The carotid artery single injection method was used to calculate the retinal uptake index (RUI) of [3H]imperatorin in vivo, whereas the retinal capillary endothelial cell lines were used for the in vitro uptake and mRNA expression assays. RUI value of [3H]imperatorin was greater than that of the reference compound ([14C]n-butanol). [3H]Imperatorin significantly reduced the RUI in the presence of neuroprotective organic cationic drugs at 10 mM. However, tetraethylammonium and p-aminohippuric acid showed no significant effects. [3H]Imperatorin uptake by TR-iBRB2 cells was time-, pH-, energy-, and concentration-dependent with a Km value of 679 ± 130 μM. In addition, the uptake study showed insensitivity to sodium and membrane potential. Various organic cations including pyrilamine, nicotine, and clonidine significantly reduced the uptake of [3H]imperatorin, whereas organic anions and monocarboxylic acids did not. Furthermore, the mRNA expression level dropped markedly with rOCTN1, rOCTN2, rPMAT, and rMATE1 small interfering RNAs in the transfection study. Moreover, [3H]imperatorin uptake remained neutral with small interfering RNA transfections. Our results indicate that imperatorin transport across the iBRB involves carrier-mediated transporter system.
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Zhao AH, Zhang YB, Yang XW. Simultaneous determination and pharmacokinetics of sixteen Angelicae dahurica coumarins in vivo by LC-ESI-MS/MS following oral delivery in rats. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1029-1036. [PMID: 27444348 DOI: 10.1016/j.phymed.2016.06.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 04/20/2016] [Accepted: 06/14/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND The roots of Angelica dahurica cv. Qibaizhi is frequently used in clinical practice as a traditional Chinese medicine. However, a comprehensive study of the pharmacokinetics of this medicine has not been carried out. METHOD A sensitive and specific liquid chromatographic-tandem mass (LC-MS/MS) spectrometric method was established to investigate pharmacokinetics of sixteen coumarins of Angelicae dahuricae Radix (ADR) in rat plasma, including xanthotoxol (1), oxypeucedanin hydrate (2), 5-hydroxy-8-methoxypsoralen (3), (-)-marmesin (4), byakangelicin (5), columbianetin (6), psoralen (7), xanthotoxin (8), neobyakangelicol (9), isoimpinellin (10), bergapten (11), heraclenin (12), oxypeucedanin ethanolate (13), imperatorin (14), phellopterin (15), isoimperatorin (16). Detection was performed on a triple quadrupole mass spectrometer in multiple-reaction-mode (MRM). RESULTS The method established in this assay was successfully applied to the pharmacokinetic study of the selected coumarins in rat plasma after oral administration of the extract of ADR, and the pharmacokinetic characteristics of sixteen coumarins were clearly elucidated. CONCLUSION This pharmacokinetic identification of multiple coumarins of ADR in rats provides a significant basis for better understanding the metabolic mechanism of the herb medicine.
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Affiliation(s)
- Ai-Hong Zhao
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, 100191, Beijing, China; School of Life Science and Engineering, Lanzhou University of Technology, 730050, Lanzhou, China
| | - You-Bo Zhang
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, 100191, Beijing, China; Laboratory of Metabolism, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, United States
| | - Xiu-Wei Yang
- State Key Laboratory of Natural and Biomimetic Drugs and Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, 100191, Beijing, China.
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Kozioł E, Skalicka-Woźniak K. Imperatorin-pharmacological meaning and analytical clues: profound investigation. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2016; 15:627-649. [PMID: 27453708 PMCID: PMC4939159 DOI: 10.1007/s11101-016-9456-2] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2016] [Accepted: 02/13/2016] [Indexed: 05/09/2023]
Abstract
Imperatorin, a furanocoumarin derivative, has many documented pharmacological properties which make it a candidate for possible drug development. In this review, the activity on the central nervous system, the anticancer and antiviral properties and the influence on the cardiovascular system are described. The aim of this review is also to present an overview of the techniques used for the analysis, isolation, and separation of imperatorin from plant material from the practical perspective.
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Affiliation(s)
- Ewelina Kozioł
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, 1 Chodzki Str., 20-093 Lublin, Poland
| | - Krystyna Skalicka-Woźniak
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, 1 Chodzki Str., 20-093 Lublin, Poland
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15
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Skalicka-Woźniak K, Orhan IE, Cordell GA, Nabavi SM, Budzyńska B. Implication of coumarins towards central nervous system disorders. Pharmacol Res 2015; 103:188-203. [PMID: 26657416 DOI: 10.1016/j.phrs.2015.11.023] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 11/28/2015] [Accepted: 11/29/2015] [Indexed: 01/11/2023]
Abstract
Coumarins are widely distributed, plant-derived, 2H-1-benzopyran-2-one derivatives which have attracted intense interest in recent years as a result of their diverse and potent pharmacological properties. Particularly, their effects on the central nervous system (CNS) have been established. The present review discusses the most important pharmacological effects of natural and synthetic coumarins on the CNS, including their interactions with benzodiazepine receptors, their dopaminergic and serotonergic affinity, and their ability to inhibit cholinesterases and monoamine oxidases. The structure-activity relationships pertaining to these effects are also discussed. This review posits that natural or synthetic coumarins have the potential for development in the therapy of psychiatric and neurodegenerative disorders, including Alzheimer's and Parkinson's diseases, schizophrenia, anxiety, epilepsy, and depression.
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Affiliation(s)
- Krystyna Skalicka-Woźniak
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University of Lublin, 1 Chodzki Str., 20-093 Lublin, Poland.
| | - Ilkay Erdogan Orhan
- Department of Pharmacognosy, Faculty of Pharmacy, Gazi University, 06330 Ankara, Turkey
| | - Geoffrey A Cordell
- Natural Products Inc., Evanston, IL 60203, USA; Department of Pharmaceutics, College of Pharmacy, University of FL, Gainesville, FL 32610, USA
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Barbara Budzyńska
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Poland
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Zagaja M, Pyrka D, Skalicka-Wozniak K, Glowniak K, Florek-Luszczki M, Glensk M, Luszczki JJ. Effect of xanthotoxin (8-methoxypsoralen) on the anticonvulsant activity of classical antiepileptic drugs against maximal electroshock-induced seizures in mice. Fitoterapia 2015; 105:1-6. [PMID: 26026802 DOI: 10.1016/j.fitote.2015.05.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2015] [Revised: 05/25/2015] [Accepted: 05/26/2015] [Indexed: 01/16/2023]
Abstract
The effects of xanthotoxin (8-methoxypsoralen) on the anticonvulsant activity of four classical antiepileptic drugs (carbamazepine, phenobarbital, phenytoin and valproate) were studied in the mouse maximal electroshock seizure model. Tonic hind limb extension (seizure activity) was evoked in adult male albino Swiss mice by a current (25 mA, 500 V, 50 Hz, 0.2 s stimulus duration) delivered via auricular electrodes. Total brain concentrations of antiepileptic drugs were measured by fluorescence polarization immunoassay to ascertain any pharmacokinetic contribution to the observed anticonvulsant effects. Results indicate that xanthotoxin (50 and 100 mg/kg, i.p.) significantly potentiated the anticonvulsant activity of carbamazepine against maximal electroshock-induced seizures (P<0.05 and P<0.001, respectively). Similarly, xanthotoxin (100 mg/kg, i.p.) markedly enhanced the anticonvulsant action of valproate in the maximal electroshock seizure test (P<0.001). In contrast, xanthotoxin (100 mg/kg, i.p.) did not affect the protective action of phenobarbital and phenytoin against maximal electroshock-induced seizures in mice. Moreover, xanthotoxin (100 mg/kg, i.p.) significantly increased total brain concentrations of carbamazepine (P<0.001) and valproate (P<0.05), but not those of phenytoin and phenobarbital, indicating pharmacokinetic nature of interactions between drugs. In conclusion, the combinations of xanthotoxin with carbamazepine and valproate, despite their beneficial effects in terms of seizure suppression in mice, were probably due to a pharmacokinetic increase in total brain concentrations of these antiepileptic drugs in experimental animals.
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Affiliation(s)
- Miroslaw Zagaja
- Isobolographic Analysis Laboratory, Institute of Rural Health, Jaczewskiego 2, PL 20-950 Lublin, Poland
| | - Daniel Pyrka
- Department of Pathophysiology, Medical University, Ceramiczna 1, PL 20-150 Lublin, Poland
| | - Krystyna Skalicka-Wozniak
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University, Chodzki 1, PL 20-093 Lublin, Poland
| | - Kazimierz Glowniak
- Department of Pharmacognosy with Medicinal Plant Unit, Medical University, Chodzki 1, PL 20-093 Lublin, Poland
| | | | - Michał Glensk
- Department of Pharmacognosy, Medical University, Nankiera Square 1, PL 50-140 Wroclaw, Poland
| | - Jarogniew J Luszczki
- Isobolographic Analysis Laboratory, Institute of Rural Health, Jaczewskiego 2, PL 20-950 Lublin, Poland; Department of Pathophysiology, Medical University, Ceramiczna 1, PL 20-150 Lublin, Poland.
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Budzynska B, Boguszewska-Czubara A, Kruk-Slomka M, Skalicka-Wozniak K, Michalak A, Musik I, Biala G. Effects of imperatorin on scopolamine-induced cognitive impairment and oxidative stress in mice. Psychopharmacology (Berl) 2015; 232:931-42. [PMID: 25189792 PMCID: PMC4325182 DOI: 10.1007/s00213-014-3728-6] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 08/20/2014] [Indexed: 12/21/2022]
Abstract
RATIONALE Imperatorin, a naturally occurring furanocoumarin, inactivates gamma-aminobutyric acid transaminase and inhibits acetylcholinesterase activity. OBJECTIVES The purpose of our experiment was to examine the influence of imperatorin on cognitive impairment and oxidative stress in the brain induced by scopolamine in male Swiss mice. METHODS In the present studies, we used scopolamine-invoke memory deficit measured in passive avoidance (PA) paradigm as an animal model of Alzheimer disease (AD). RESULTS Our finding revealed that imperatorin administered acutely at the doses of 5 and 10 mg/kg prior to the injection of scopolamine (1 mg/kg) improved memory acquisition and consolidation impaired by scopolamine. Furthermore, repeatable (7 days, twice daily) administration of the highest dose of imperatorin (10 mg/kg) significantly attenuated the effects of scopolamine on memory acquisition, whereas the doses of 5 and 10 mg/kg of this furanocoumarin were effective when memory consolidation was measured. Imperatorin, administered with scopolamine, increased antioxidant enzymes activity and decreased concentration of malondiamide, an indicator of lipid peroxidation level. CONCLUSIONS These results demonstrate that imperatorin may offer protection against scopolamine-induced memory impairments and possesses antioxidant properties, thus after further preclinical and clinical studies this compound may provide an interesting approach in pharmacotherapy, as well as prophylactics of AD.
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Affiliation(s)
- Barbara Budzynska
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland,
| | | | - Marta Kruk-Slomka
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
| | - Krystyna Skalicka-Wozniak
- Department of Pharmacognosy with Medicinal Plants Unit, Medical University of Lublin, Lublin, Poland
| | - Agnieszka Michalak
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
| | - Irena Musik
- Department of Medical Chemistry, Medical University of Lublin, Lublin, Poland
| | - Grazyna Biala
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Lublin, Poland
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Sigurdsson S, Gudbjarnason S. Effect of oral imperatorin on memory in mice. Biochem Biophys Res Commun 2013; 441:318-20. [PMID: 24140410 DOI: 10.1016/j.bbrc.2013.10.036] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2013] [Accepted: 10/08/2013] [Indexed: 11/26/2022]
Abstract
The aim of this study was to explore the effect of the acetylcholinesterase inhibiting mixture of extracts of Angelica archangelica fruit and Geranium sylvaticum on memory. Furthermore the effect of the main compound, the furanocoumarin imperatorin, which has been shown to affect several neurotransmitters, was studied. Passive avoidance was measured by step-down latency and step-through latency of 10 months old mice receiving 0.79 mg/kg of imperatorin daily, pure or as part of the extracts, for 14 days or longer. Step-down latency was significantly higher in both groups receiving imperatorin than in the control group. In contrast, no difference was found between treatment groups regarding step-through latency. The results indicate that the imperatorin is the main active component of the extract mixture.
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Kuklev DV, Domb AJ, Dembitsky VM. Bioactive acetylenic metabolites. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2013; 20:1145-1159. [PMID: 23871125 DOI: 10.1016/j.phymed.2013.06.009] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Revised: 03/25/2013] [Accepted: 06/10/2013] [Indexed: 06/02/2023]
Abstract
This article focuses on anticancer, and other biological activities of acetylenic metabolites obtained from plants and fungi. Acetylenic compounds belong to a class of molecules containing triple bond(s). Naturally occurring acetylenics are of particular interest since many of them display important biological activities and possess antitumor, antibacterial, antimicrobial, antifungal, and immunosuppressive properties. There are of great interest for medicine, pharmacology, medicinal chemistry, and pharmaceutical industries. This review presents structures and describes cytotoxic activities of more than 100 acetylenic metabolites, including fatty alcohols, ketones, and acids, acetylenic cyclohexanoids, spiroketal enol ethers, and carotenoids isolated from fungi and plants.
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Affiliation(s)
- Dmitry V Kuklev
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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Granica S, Kiss AK, Jarończyk M, Maurin JK, Mazurek AP, Czarnocki Z. Synthesis of imperatorin analogs and their evaluation as acetylcholinesterase and butyrylcholinesterase inhibitors. Arch Pharm (Weinheim) 2013; 346:775-82. [PMID: 24123207 DOI: 10.1002/ardp.201300259] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 08/09/2013] [Accepted: 08/12/2013] [Indexed: 11/06/2022]
Abstract
In this study, we synthesized several imperatorin analogs using imperatorin and xanthotoxin as substrates. The anti-cholinesterase activities of all compounds were evaluated in in vitro experiments according to the modified Ellman's method. For each synthesized compound, IC50 values for both enzymes were established. Galantamine hydrobromide was used as a positive control in the enzymatic experiments. All active compounds showed selectivity toward butyrylcholinesterase (BuChE) rather than acetylcholinesterase. The most active ones were 8-(3-methylbutoxy)-psoralen and 8-hexoxypsoralen with IC50 values for BuChE of around 16.5 and 16.4 µM, respectively. The results of our study may be considered as the beginning of a search for potential anti-Alzheimer's disease drugs based on the structure of natural furocoumarins.
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Affiliation(s)
- Sebastian Granica
- Faculty of Chemistry, University of Warsaw, Warsaw, Poland; Faculty of Pharmacy, Department of Pharmacognosy and Molecular Basis of Phytotherapy, Medical University of Warsaw, Warsaw, Poland
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21
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Budzynska B, Boguszewska-Czubara A, Kruk-Slomka M, Skalicka-Wozniak K, Michalak A, Musik I, Biala G, Glowniak K. Effects of imperatorin on nicotine-induced anxiety- and memory-related responses and oxidative stress in mice. Physiol Behav 2013; 122:46-55. [PMID: 23999469 DOI: 10.1016/j.physbeh.2013.08.019] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Accepted: 08/25/2013] [Indexed: 01/02/2023]
Abstract
The purpose of the reported experiments was to examine the effects of imperatorin [9-[(3-methylbut-2-en-1-yl)oxy]-7H-furo[3,2-g]chromen-7-one] on anxiety and memory-related responses induced by nicotine in mice and their relation to the level of nicotine-induced oxidative stress in brain as well as in the hippocampus and the prefrontal cortex. Male Swiss mice were tested for anxiety in the elevated plus maze test (EPM), and for cognition using passive avoidance (PA) procedures. Imperatorin, purified by high-speed counter-current chromatography from methanol extract of fruits of Angelica officinalis, acutely administered at the doses of 10 and 20mg/kg impaired the anxiogenic effect of nicotine (0.1mg/kg, s.c.). Furthermore, acute injections of subthreshold dose of imperatorin (1mg/kg, i.p.) improved processes of memory acquisition when co-administered with nicotine used at non-active dose of 0.05 mg/kg, s.c. Additionally, repeated administration of imperatorin (1mg/kg, i.p., twice daily, for 6 days) improved different stages of memory processes (both acquisition and consolidation) when injected in combination with non-active dose of nicotine (0.05 mg/kg, s.c.) in the PA task. Oxidative stress was assessed by determination of antioxidant enzymes (glutathione peroxidases (GPx), superoxide dismutase (SOD), glutathione reductase (GR)) activities as well as of malondialdehyde (MDA) concentration in the whole brain, the hippocampus and the prefrontal cortex after repeated administration of imperatorin (1mg/kg, 6 days) and single nicotine injection (0.05 mg/kgs.c.) on the seventh day. The results of our research suggest strong behavioural interaction between imperatorin and nicotine at the level of anxiety- and cognitive-like processes. Furthermore, imperatorin inhibited nicotine-induced changes in examined indicators of oxidative stress, especially in the hippocampus and the cortex.
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Affiliation(s)
- Barbara Budzynska
- Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Poland.
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Pervin M, Hasnat MDA, Debnath T, Park SR, Kim DH, Lim BO. Antioxidant, Anti-Inflammatory and Antiproliferative Activity of Angelica Dahurica
Root Extracts. J Food Biochem 2013. [DOI: 10.1111/jfbc.12046] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mehnaz Pervin
- Department of Applied Biochemistry; College of Biomedical & Health Science; Konkuk University; Chungju 380-701 Republic of Korea
| | - MD Abul Hasnat
- Department of Applied Biochemistry; College of Biomedical & Health Science; Konkuk University; Chungju 380-701 Republic of Korea
| | - Trishna Debnath
- Department of Applied Biochemistry; College of Biomedical & Health Science; Konkuk University; Chungju 380-701 Republic of Korea
| | - Sa Ra Park
- Department of Applied Biochemistry; College of Biomedical & Health Science; Konkuk University; Chungju 380-701 Republic of Korea
| | - Da Hye Kim
- Department of Applied Biochemistry; College of Biomedical & Health Science; Konkuk University; Chungju 380-701 Republic of Korea
| | - Beong Ou Lim
- Department of Applied Biochemistry; College of Biomedical & Health Science; Konkuk University; Chungju 380-701 Republic of Korea
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Lili W, Yehong S, Qi Y, Yan H, Jinhui Z, Yan L, Cheng G. In vitro permeability analysis, pharmacokinetic and brain distribution study in mice of imperatorin, isoimperatorin and cnidilin in Radix Angelicae Dahuricae. Fitoterapia 2013; 85:144-53. [DOI: 10.1016/j.fitote.2013.01.007] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 01/06/2013] [Accepted: 01/09/2013] [Indexed: 10/27/2022]
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Chen KC, Chang SS, Tsai FJ, Chen CYC. Han ethnicity-specific type 2 diabetic treatment from traditional Chinese medicine? J Biomol Struct Dyn 2012; 31:1219-35. [PMID: 23146021 DOI: 10.1080/07391102.2012.732340] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Insulin-degrading enzyme (IDE) gene is one of the type 2 diabetes mellitus susceptibility genes specific to the Han Chinese population. IDE, a zinc-metalloendopeptidase, is a potential target for controlling insulin degradation. Potential lead compounds for IDE inhibition were identified from traditional Chinese medicine (TCM) through virtual screening and evaluation of their pharmacokinetic properties of absorption, distribution, metabolism, excretion, and toxicity. Molecular dynamics (MD) simulation was performed to validate the stability of complexes from docking simulation. The top three TCM compounds, dihydrocaffeic acid, isopraeroside IV, and scopolin, formed stable H-bond interactions with key residue Asn139, and were linked to active pocket residues His108, His112, and Glu189 through zinc. Torsion angle trajectories also indicated some stable interactions for each ligand with IDE. Molecular level analysis revealed that the TCM candidates might affect IDE through competitive binding to the active site and steric hindrance. Structural feature analysis reveals that high amounts of hydroxyl groups and carboxylic moieties contribute to anchor the ligand within the complex. Hence, we suggest the top three TCM compounds as potential inhibitor leads against IDE protein to control insulin degradation for type 2 diabetes mellitus. An animated interactive 3D complement (I3DC) is available in Proteopedia at http://proteopedia.org/w/Journal:JBSD:29.
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Affiliation(s)
- Kuan-Chung Chen
- a Graduate Institute of Pharmaceutical Chemistry, China Medical University , Taichung , 40402 , Taiwan
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27
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Jung HW, Oh TW, Jung JK, Lee JH, Shin GJ, Park YK. Inhibitory effects of the methylene chloride fraction of JP05 on the production of inflammatory mediators in LPS-activated BV2 microglia. Inflammation 2012; 35:332-41. [PMID: 21505811 DOI: 10.1007/s10753-011-9323-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Excessive production of inflammatory mediators such as nitric oxide (NO) and proinflammatory cytokines from activated microglia in the central nervous system contributes to uncontrolled inflammation in neurodegenerative disorders. In this study, we investigated the anti-inflammatory activities of the methylene chloride fraction of JP05 (JP05-MC) on the production of inflammatory mediators in lipopolysaccharide (LPS)-stimulated BV2 mouse microglial cells, and its mechanism of action. JP05-MC significantly inhibited LPS-induced production of NO and the proinflammatory cytokines, TNF-α and IL-6, in BV2 cells. JP05-MC also attenuated the mRNA expression and protein levels of inducible nitric oxide synthase in LPS-induced BV2 cells. JP05-MC significantly attenuated LPS-elicited phosphorylation of the mitogen-activated protein kinase (MAPK), extracellular-signal-regulated kinase 1/2, and nuclear factor-κB (NF-κB) nuclear translocation in BV2 cells. Our results indicate that JP05-MC exerts anti-inflammatory properties via downregulation of inflammatory mediator gene transcription by suppressing the MAPK and NF-κB pathways, suggesting that JP05-MC may have therapeutic potential as an anti-inflammatory agent in neurodegenerative diseases.
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Affiliation(s)
- Hyo Won Jung
- Oriental Medicine R&D Center, College of Oriental Medicine, Dongguk University, Gyeongju, 780-714, Republic of Korea
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28
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The protective activity of linear furanocoumarins from Angelica dahurica against glucose-mediated protein damage. ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s13765-012-2035-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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29
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Wyrembek P, Negri R, Kaczor P, Czyżewska M, Appendino G, Mozrzymas JW. Falcarindiol allosterically modulates GABAergic currents in cultured rat hippocampal neurons. JOURNAL OF NATURAL PRODUCTS 2012; 75:610-616. [PMID: 22432736 DOI: 10.1021/np2008522] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Falcarindiol (1), a C-17 polyacetylenic diol, shows a pleiotropic profile of bioactivity, but the mechanism(s) underlying its actions are largely unknown. Large amounts of 1 co-occur in water hemlock (Oenanthe crocata) along with the convulsant polyacetylenic toxin oenanthotoxin (2), a potent GABA(A) receptor (GABA(A)R) inhibitor. Since these compounds are structurally and biogenetically related, it was considered of interest to evaluate whether 1 could affect GABAergic activity, and for this purpose a model of hippocampal cultured neurons was used. Compound 1 significantly increased the amplitude of miniature inhibitory postsynaptic currents, accelerated their onset, and prolonged the decay kinetics. This compound enhanced also the amplitude of currents elicited by 3 μM GABA and accelerated their fading, reducing, however, currents evoked by a saturating (10 mM) GABA concentration. Moreover, kinetic analysis of responses to 10 mM GABA revealed that 1 upregulated the rate and extent of desensitization and slowed the current onset and deactivation. Taken together, these data show that 1 exerts a potent modulatory action on GABA(A)Rs, possibly by modulating agonist binding and desensitization, overall potentially decreasing the toxicity of co-occurring GABA-inhibiting convulsant toxins.
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Affiliation(s)
- Paulina Wyrembek
- Laboratory of Neuroscience, Department of Biophysics, Wrocław Medical University, ul. Chałubińskiego 3, 50-358 Wrocław, Poland
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30
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Tou WI, Chen CYC. In silico investigation of potential SRC kinase ligands from traditional Chinese medicine. PLoS One 2012; 7:e33728. [PMID: 22470466 PMCID: PMC3312348 DOI: 10.1371/journal.pone.0033728] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2011] [Accepted: 02/16/2012] [Indexed: 11/18/2022] Open
Abstract
Src kinase is an attractive target for drug development based on its established relationship with cancer and possible link to hypertension. The suitability of traditional Chinese medicine (TCM) compounds as potential drug ligands for further biological evaluation was investigated using structure-based, ligand-based, and molecular dynamics (MD) analysis. Isopraeroside IV, 9alpha-hydroxyfraxinellone-9-O-beta-D-glucoside (9HFG) and aurantiamide were the top three TCM candidates identified from docking. Hydrogen bonds and hydrophobic interactions were the primary forces governing docking stability. Their stability with Src kinase under a dynamic state was further validated through MD and torsion angle analysis. Complexes formed by TCM candidates have lower total energy estimates than the control Sacaratinib. Four quantitative-structural activity relationship (QSAR) in silico verifications consistently suggested that the TCM candidates have bioactive properties. Docking conformations of 9HFG and aurantiamide in the Src kinase ATP binding site suggest potential inhibitor-like characteristics, including competitive binding at the ATP binding site (Lys295) and stabilization of the catalytic cleft integrity. The TCM candidates have significantly lower ligand internal energies and are estimated to form more stable complexes with Src kinase than Saracatinib. Structure-based and ligand-based analysis support the drug-like potential of 9HFG and aurantiamide and binding mechanisms reveal the tendency of these two candidates to compete for the ATP binding site.
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Affiliation(s)
- Weng Ieong Tou
- School of Medicine, China Medical University, Taichung, Taiwan
- Laboratory of Computational and Systems Biology, China Medical University, Taichung, Taiwan
| | - Calvin Yu-Chian Chen
- Laboratory of Computational and Systems Biology, China Medical University, Taichung, Taiwan
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
- Department of Biotechnology, Asia University, Taichung, Taiwan
- Department of Biomedical Informatics, Asia University, Taichung, Taiwan
- China Medical University Beigang Hospital, Yunlin, Taiwan
- * E-mail:
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Yeung J, Holinstat M. 12-lipoxygenase: a potential target for novel anti-platelet therapeutics. Cardiovasc Hematol Agents Med Chem 2012; 9:154-64. [PMID: 21838667 DOI: 10.2174/187152511797037619] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2011] [Accepted: 07/07/2011] [Indexed: 01/31/2023]
Abstract
Platelets play an essential role in the regulation of hemostasis and thrombosis and controlling their level of activation is central to prevention of occlusive clot formation and stroke. Although a number of anti-platelet targets have been identified to address this issue including COX-1, the P2Y(12) receptor, the integrin αIIbβ3, and more recently the protease-activated receptor-1, these targets often result in a significant increased risk of bleeding which may lead to pathologies as serious as the thrombosis they were meant to treat including intracranial hemorrhage and gastrointestinal bleeding. Therefore, alternative approaches to treat uncontrolled platelet activation are warranted. Platelet-type 12-lipoxygenase is an enzyme which oxidizes the free fatty acid in the platelet resulting in the production of the stable metabolite 12-hydroxyeicosatetraenoic acid (12-HETE). The role of 12-HETE in the platelet has been controversial with reports associating its function as being both anti- and pro-thrombotic. In this review, the role of 12-lipoxygenase and its bioactive metabolites in regulation of platelet reactivity, clot formation, and hemostasis is described. Understanding the mechanisms by which 12-lipoxygenase and its metabolites modulate platelet function may lead to the development of a novel class of anti-platelet therapies targeting the enzyme in order to attenuate injury-induced clot formation, vessel occlusion and pathophysiological shifts in hemostasis.
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Affiliation(s)
- Jennifer Yeung
- Department of Medicine, Cardeza Foundation for Hematologic Research, Thomas Jefferson University, Philadelphia, PA, USA
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Wszelaki N, Paradowska K, Jamróz MK, Granica S, Kiss AK. Bioactivity-guided fractionation for the butyrylcholinesterase inhibitory activity of furanocoumarins from Angelica archangelica L. roots and fruits. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2011; 59:9186-93. [PMID: 21786787 DOI: 10.1021/jf201971s] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
Isolation and identification of the inhibitors of butyrylcholinesterase (BChE), obtained from the extracts of roots and fruits of Angelica archangelica L., are reported. Our results confirmed the weak inhibitory effect of Angelica roots on acetylcholinesterase activity. BChE inhibition was much more pronounced at a concentration of 100 μg/mL for hexane extracts and attained a higher rate than 50%. The TLC bioautography guided fractionation and spectroscopic analysis led to the isolation and identification of imperatorin from the fruit's hexane extract and of heraclenol-2'-O-angelate from the root's hexane extract. Both compounds showed significant BChE inhibition activity with IC(50) = 14.4 ± 3.2 μM and IC(50) = 7.5 ± 1.8 μM, respectively. Only C8-substituted and C5-unsubstituted furanocoumarins were active, which could supply information about the initial structures of specific BChE inhibitors.
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Affiliation(s)
- Natalia Wszelaki
- Department of Pharmacognosy and Molecular Basis of Phytotherapy, Medical University of Warsaw, Banacha 1, 02-097, Warsaw, Poland
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Zaugg J, Eickmeier E, Rueda DC, Hering S, Hamburger M. HPLC-based activity profiling of Angelica pubescens roots for new positive GABAA receptor modulators in Xenopus oocytes. Fitoterapia 2010; 82:434-40. [PMID: 21147202 DOI: 10.1016/j.fitote.2010.12.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Revised: 11/30/2010] [Accepted: 12/02/2010] [Indexed: 10/18/2022]
Abstract
A petroleum ether extract of the traditional Chinese herbal drug Duhuo (roots of Angelica pubescens Maxim. f. biserrata Shan et Yuan), showed significant activity in a functional two-microelectrode voltage clamp assay with Xenopus oocytes which expressed recombinant γ-aminobutyric acid type A (GABA(A)) receptors of the subtype α(1)β(2)γ(2S). HPLC-based activity profiling of the active extract revealed six compounds responsible for the GABA(A) receptor modulating activity. They were identified by microprobe NMR and high resolution mass spectrometry as columbianetin acetate (1), imperatorin (3), cnidilin (4), osthol (5), and columbianedin (6). In concentration-dependent experiments, osthol and cnidilin showed the highest potentiation of the GABA induced chloride current (273.6%±39.4% and 204.5%±33.2%, respectively at 300 μM). Bisabolangelone (2) only showed minor activity at the GABA(A) receptor. The example demonstrates that HPLC-based activity profiling is a simple and efficient method to rapidly identify GABA(A) receptor modulators in a bioactive plant extract.
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Affiliation(s)
- Janine Zaugg
- Institute of Pharmaceutical Biology, University of Basel, Basel, Switzerland
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Lee MY, Seo CS, Lee JA, Lee NH, Kim JH, Ha H, Zheng MS, Son JK, Shin HK. Anti-asthmatic effects of Angelica dahurica against ovalbumin-induced airway inflammation via upregulation of heme oxygenase-1. Food Chem Toxicol 2010; 49:829-37. [PMID: 21146576 DOI: 10.1016/j.fct.2010.12.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2010] [Revised: 11/16/2010] [Accepted: 12/03/2010] [Indexed: 10/18/2022]
Abstract
Asthma is a chronic immune inflammatory disease characterized by variable airflow obstruction. The present study was undertaken to assess the effects of an Angelica dahurica Bentham et Hooker ethanolic extract (AD) on airway inflammation in an ovalbumin (OVA)-induced airway inflammation model. Mice that received AD displayed significantly lower airway eosinophilia, cytokine levels, including interleukin (IL)-4, IL-5, and tumor necrosis factor (TNF)-alpha levels, mucus production and immunoglobulin (Ig)E, compared with OVA-induced mice. In our experiments, AD treatment reduced airway inflammation and suppressed oxidative stress in the OVA-induced asthma model, partly via induction of heme oxygenase (HO)-1. The effects of AD on OVA-induced HO-1 induction were partially reversed by the HO-1 inhibitor, tin protoporphyrin (SnPP). Our results clearly indicate that AD is a suppressor of airway allergic inflammation, and may thus be effectively used as an anti-inflammatory drug in the treatment of asthma.
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Affiliation(s)
- Mee-Young Lee
- Herbal Medicine EBM Research Center, Korea Institute of Oriental Medicine, Exporo 483, Yuseong-gu, Daejeon 305-811, Republic of Korea
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Gomes NGM, Campos MG, Orfão JMC, Ribeiro CAF. Plants with neurobiological activity as potential targets for drug discovery. Prog Neuropsychopharmacol Biol Psychiatry 2009; 33:1372-89. [PMID: 19666075 DOI: 10.1016/j.pnpbp.2009.07.033] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2009] [Revised: 07/31/2009] [Accepted: 07/31/2009] [Indexed: 12/21/2022]
Abstract
Significant number of studies has been performed to find alternatives or treatments for diseases of the nervous forum by identifying structures with activity at the central nervous system (CNS). However most of the screenings are usually conducted on an ad hoc basis and not systematically. The initial purpose of this review was to screen plants with neurological bioactivity, in particular those that have not been fully studied and that have molecular mechanisms whose active constituents responsible for the activity remain to be identified. The second purpose was to identify potential target plants for future studies of new and alternative therapies for the treatment of neurological disorders and neurodegenerative diseases. All plants considered in this review were selected for three qualities: possible molecular requirements to act at the CNS; representative of the main classes of compounds with the referred bioactivity and the major families containing species with those compounds; and diffuse world distribution. We identified several examples of plants that have potential for further study. We have included the main families of these plants, their known molecular mechanisms involved in neurological bioactivity, and the active constituents responsible for such activity. Also included is a brief discussion about the requirements of the different compounds to reach the CNS. These requirements may be less limited than what researchers have previously thought.
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Affiliation(s)
- Nelson G M Gomes
- Center of Pharmaceutical Studies, Laboratory of Pharmacognosy, Faculty of Pharmacy, University of Coimbra, Polo III, Azinhaga de Santa Comba, Coimbra, Portugal.
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Simultaneous determination of five coumarins inAngelicae dahuricaeRadix by HPLC/UV and LC-ESI-MS/MS. Biomed Chromatogr 2009; 23:1034-43. [DOI: 10.1002/bmc.1219] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Luszczki JJ, Wojda E, Andres-Mach M, Cisowski W, Glensk M, Glowniak K, Czuczwar SJ. Anticonvulsant and acute neurotoxic effects of imperatorin, osthole and valproate in the maximal electroshock seizure and chimney tests in mice: A comparative study. Epilepsy Res 2009; 85:293-9. [DOI: 10.1016/j.eplepsyres.2009.03.027] [Citation(s) in RCA: 93] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2008] [Revised: 03/25/2009] [Accepted: 03/30/2009] [Indexed: 11/30/2022]
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Pereira EC, Lucetti DL, Barbosa-Filho JM, de Brito EM, Monteiro VS, Patrocínio MCA, de Moura RR, Leal LKAM, Macedo DS, de Sousa FCF, de Barros Viana GS, Vasconcelos SMM. Coumarin effects on amino acid levels in mice prefrontal cortex and hippocampus. Neurosci Lett 2009; 454:139-42. [DOI: 10.1016/j.neulet.2009.03.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2008] [Revised: 03/02/2009] [Accepted: 03/03/2009] [Indexed: 12/24/2022]
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Zhang J, Yang G, Hu Z, He L, Li H. LC–ESI–MS Determination of Imperatorin in Rat Plasma After Oral Administration and Total Furocoumarins of Radix Angelica dahuricae and its Application to a Pharmacokinetic Study. Chromatographia 2009. [DOI: 10.1365/s10337-009-1024-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Ma Z, Xu W, Liu-Chen LY, Lee DYW. Novel coumarin glycoside and phenethyl vanillate from Notopterygium forbesii and their binding affinities for opioid and dopamine receptors. Bioorg Med Chem 2008; 16:3218-23. [PMID: 18166466 PMCID: PMC2366027 DOI: 10.1016/j.bmc.2007.12.021] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2007] [Revised: 12/06/2007] [Accepted: 12/11/2007] [Indexed: 10/22/2022]
Abstract
Bioactivity-guided fractionation of Notopterygium forbesii has resulted in the isolation of one new coumarin glycoside and one new phenethyl vanillate, together with seventeen known compounds. The structures of these compounds were characterized by spectroscopic methods. These compounds were evaluated for their binding affinities to the opioid and dopamine receptors, and falcarindiol showed weak binding affinities to opioid receptors and moderate affinity for D1 receptor (K(i)=192+/-6 nM).
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Affiliation(s)
- Zhongze Ma
- Bio-Organic and Natural Products Laboratory, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA
| | - Wei Xu
- Department of Pharmacology and Center for Substance Abuse Research, School of Medicine, Temple University, 3420 N. Broad St, Philadelphia, PA 19140, USA
| | - Lee-Yuan Liu-Chen
- Department of Pharmacology and Center for Substance Abuse Research, School of Medicine, Temple University, 3420 N. Broad St, Philadelphia, PA 19140, USA
| | - David Y. W. Lee
- Bio-Organic and Natural Products Laboratory, McLean Hospital, Harvard Medical School, 115 Mill Street, Belmont, MA 02478, USA
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Luszczki JJ, Glowniak K, Czuczwar SJ. Imperatorin enhances the protective activity of conventional antiepileptic drugs against maximal electroshock-induced seizures in mice. Eur J Pharmacol 2007; 574:133-9. [PMID: 17651727 DOI: 10.1016/j.ejphar.2007.07.008] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2007] [Revised: 06/28/2007] [Accepted: 07/04/2007] [Indexed: 10/23/2022]
Abstract
The effects of imperatorin (8-isopentenyloxypsoralen; 9-(3-methylbut-2-enyloxy)-7H-furo[3,2-g]chromen-7-one) on the anticonvulsant activity of four conventional antiepileptic drugs (carbamazepine, phenobarbital, phenytoin and valproate) were studied in the mouse maximal electroshock seizure model. Results indicate that imperatorin (30 and 40 mg/kg, i.p.) significantly potentiated the anticonvulsant activity of carbamazepine against maximal electroshock-induced seizures by reducing its median effective dose (ED(50)) from 10.3 to 6.8 (by 34%; P<0.05) and 6.0 mg/kg (by 42%; P<0.01), respectively. Similarly, imperatorin (40 mg/kg, i.p.) markedly enhanced the antielectroshock action of phenobarbital and phenytoin, by lowering their ED(50) values from 19.6 to 12.2 mg/kg (by 38%; P<0.05-phenobarbital) and from 12.8 to 8.5 mg/kg (by 34%; P<0.05-phenytoin) in the maximal electroshock seizure test. In contrast, imperatorin (40 mg/kg, i.p.) did not affect the protective action of valproate against maximal electroshock-induced seizures in mice. Imperatorin at lower doses of 20 and 30 mg/kg had no significant effect on the anticonvulsant activities of conventional antiepileptic drugs in the mouse maximal electroshock seizure model. Pharmacokinetic evaluation of interaction between imperatorin (30 mg/kg, i.p.) and carbamazepine (6.8 mg/kg, i.p.) revealed a significant increase in total brain carbamazepine concentration after imperatorin administration, indicating a pharmacokinetic nature of interaction between these drugs. In cases of phenobarbital and phenytoin, imperatorin (40 mg/kg, i.p.) did not alter significantly total brain concentrations of phenytoin and phenobarbital in mice, and thus, the observed interactions in the maximal electroshock seizure test between imperatorin and phenobarbital or phenytoin were pharmacodynamic in nature. The present study demonstrates that imperatorin enhanced the antiseizure effects of carbamazepine, phenobarbital and phenytoin in the mouse maximal electroshock seizure model. However, the combination of imperatorin with carbamazepine, despite its beneficial effects in terms of seizure suppression in mice, was complicated by a pharmacokinetic increase in total brain carbamazepine concentration in experimental animals. In contrast, the combinations of imperatorin with phenytoin and phenobarbital, due to their beneficial antiseizure effects and no pharmacokinetic interactions between drugs in the brain compartment of experimental animals, deserve more attention and are of pivotal importance for epileptic patients as advantageous combinations from a clinical viewpoint.
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Affiliation(s)
- Jarogniew J Luszczki
- Department of Pathophysiology, Medical University of Lublin, Jaczewskiego 8, PL 20-090 Lublin, Poland.
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Luszczki JJ, Glowniak K, Czuczwar SJ. Time–course and dose–response relationships of imperatorin in the mouse maximal electroshock seizure threshold model. Neurosci Res 2007; 59:18-22. [PMID: 17602770 DOI: 10.1016/j.neures.2007.05.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2007] [Revised: 05/11/2007] [Accepted: 05/21/2007] [Indexed: 11/22/2022]
Abstract
This study was designed to evaluate the anticonvulsant effects of imperatorin (a furanocoumarin isolated from fruits of Angelica archangelica) in the mouse maximal electroshock seizure threshold model. The threshold for electroconvulsions in mice was determined at several times: 15, 30, 60 and 120 min after i.p. administration of imperatorin at increasing doses of 10, 20, 30, 40, 50 and 100 mg/kg. The evaluation of time-course relationship for imperatorin in the maximal electroshock seizure threshold test revealed that the agent produced its maximum antielectroshock action at 30 min after its i.p. administration. In this case, imperatorin at doses of 50 and 100 mg/kg significantly raised the threshold for electroconvulsions in mice by 38 and 68% (P<0.05 and P<0.001), respectively. The antiseizure effects produced by imperatorin at 15, 60 and 120 min after its systemic (i.p.) administration were less expressed than those observed for imperatorin injected 30 min before the maximal electroshock seizure threshold test. Based on this study, one can conclude that imperatorin produces the anticonvulsant effect in the maximal electroshock seizure threshold test in a dose-dependent manner.
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Affiliation(s)
- Jarogniew J Luszczki
- Department of Pathophysiology, Medical University of Lublin, Jaczewskiego 8, PL 20-090 Lublin, Poland.
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He JY, Zhang W, He LC, Cao YX. Imperatorin induces vasodilatation possibly via inhibiting voltage dependent calcium channel and receptor-mediated Ca2+ influx and release. Eur J Pharmacol 2007; 573:170-5. [PMID: 17662269 DOI: 10.1016/j.ejphar.2007.06.043] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2007] [Revised: 06/19/2007] [Accepted: 06/26/2007] [Indexed: 10/23/2022]
Abstract
The purpose of the present study was to investigate the effect of imperatorin on vasodilatation and its possible mechanisms. Isometric tension of rat mesenteric arterial rings was recorded by a myograph system in vitro. The results showed that imperatorin at more than 10 muM concentration-dependently relaxed rat mesenteric arteries pre-contracted by potassium chloride (KCl) and endothelin-1, and human omental arteries pre-contracted by noradrenaline and U46619. Removal of the endothelium did not affect imperatorin-induced relaxant responses, suggesting that the vasodilatation effect is independent of the endothelium. Co-incubation with imperatorin resulted in rightward shift of concentration-response curves of KCl, calcium chloride (CaCl(2)) and noradrenaline in a non-parallel manner; 5-hydroxytryptamine (5-HT) concentration-response curves were shifted towards right in a parallel manner by imperatorin 10 and 30 muM, but markedly suppressed by imperatorin 100 muM. These results suggest that the inhibitory effect of imperatorin is mainly via voltage dependent calcium channel and possibly receptor operated calcium channel. beta-adrenoceptor, ATP-sensitive potassium channel and inwardly rectifying potassium channel were not involved in the vasodilatation, whereas blockage of calcium-activated potassium channel with tetraethylammonium had effect. Furthermore, in Ca(2+)-free medium, imperatorin concentration-dependently depressed the vasoconstrictions derived from noradrenaline and CaCl(2), and resulted in a decreased contractile response induced by caffeine, indicating a role of inhibiting extracellular Ca(2+) influx and intracellular Ca(2+) release from Ca(2+) store. Taken together, our results suggest that imperatorin induces vasodilatation by possible mechanisms inhibiting voltage dependent calcium channel and receptor-mediated Ca(2+)influx and Ca(2+)release. Opening calcium-activated potassium channel and competitive antagonism of 5-HT receptors may also contribute to this vasodilatation effect.
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Affiliation(s)
- Jian-Yu He
- Xi'an Jiaotong University School of Medicine, Xi'an, Shaanxi, 710061, PR China
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