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Cintra L, Yanicostas C, Soussi-Yanicostas N, Vianna Maurer-Morelli C. Effects of baicalin pre-treatment on pentylenetetrazole-induced seizures: Insights from zebrafish larvae locomotor behavior and neuronal calcium imaging. Epilepsy Behav 2024; 157:109866. [PMID: 38820680 DOI: 10.1016/j.yebeh.2024.109866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/21/2024] [Accepted: 05/21/2024] [Indexed: 06/02/2024]
Abstract
Natural compounds are increasingly being studied for their potential neuroprotective effects against inflammatory neurological diseases. Epilepsy is a common neurological disease associated with inflammatory processes, and around 30% of people with epilepsy do not respond to traditional treatments. Some flavonoids, when taken along with antiseizure medications can help reduce the likelihood of drug-resistant epilepsy. Baicalin, a plant-based compound, has been shown to possess pharmacological properties such as anti-inflammatory, neuroprotective, anticonvulsant, and antioxidant activities. In this study, we tested the effect of baicalin on an established model of pharmacologically induced seizure in zebrafish using measures of both locomotor behavior and calcium imaging of neuronal activity. The results of our study showed that, at the tested concentration, and contrary to other studies in rodents, baicalin did not have an anti-seizure effect in zebrafish larvae. However, given its known properties, other concentrations and approaches should be explored to determine if it could potentially have other beneficial effects, either alone or when administered in combination with classic antiseizure medications.
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Affiliation(s)
- Laís Cintra
- Universidade Estadual de Campinas - Unicamp, School of Medical Science, Department of Translational Medicine, Campinas, SP, Brazil; Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas
| | - Constantin Yanicostas
- NeuroDiderot, Inserm U1141, Université Paris Cité, Hôpital Robert Debré, Paris, France; Department of Biochemistry, University of Paris, INSERM, T3S, 75006 Paris, France
| | - Nadia Soussi-Yanicostas
- NeuroDiderot, Inserm U1141, Université Paris Cité, Hôpital Robert Debré, Paris, France; Department of Biochemistry, University of Paris, INSERM, T3S, 75006 Paris, France.
| | - Claudia Vianna Maurer-Morelli
- Universidade Estadual de Campinas - Unicamp, School of Medical Science, Department of Translational Medicine, Campinas, SP, Brazil; Brazilian Institute of Neuroscience and Neurotechnology (BRAINN), Campinas.
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2
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Chen X, Wu H, Li P, Peng W, Wang Y, Zhang X, Zhang A, Li J, Meng F, Wang W, Su W. Unraveling the Mechanism of Xiaochaihu Granules in Alleviating Yeast-Induced Fever Based on Network Analysis and Experimental Validation. Pharmaceuticals (Basel) 2024; 17:475. [PMID: 38675434 PMCID: PMC11053540 DOI: 10.3390/ph17040475] [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: 03/12/2024] [Revised: 03/30/2024] [Accepted: 04/06/2024] [Indexed: 04/28/2024] Open
Abstract
Xiaochaihu granules (XCHG) are extensively used to treat fever. Nevertheless, the underlying mechanism remains elusive. This study aimed to explore the potential of XCHG in mitigating yeast-induced fever and the underlying metabolic pathways. The chemical composition of XCHG was ascertained using ultra-fast liquid chromatography/quadrupole-time-of-flight tandem mass spectrometry (UFLC-Q-TOF-MS/MS), followed by integrated network analysis to predict potential targets. We then conducted experimental validation using pharmacological assays and metabolomics analysis in a yeast-induced mouse fever model. The study identified 133 compounds in XCHG, resulting in the development of a comprehensive network of herb-compound-biological functional modules. Subsequently, molecular dynamic (MD) simulations confirmed the stability of the complexes, including γ-aminobutyric acid B receptor 2 (GABBR2)-saikosaponin C, prostaglandin endoperoxide synthases (PTGS2)-lobetyolin, and NF-κB inhibitor IκBα (NFKBIA)-glycyrrhizic acid. Animal experiments demonstrated that XCHG reduced yeast-induced elevation in NFKBIA's downstream regulators [interleukin (IL)-1β and IL-8], inhibited PTGS2 activity, and consequently decreased prostaglandin E2 (PGE2) levels. XCHG also downregulated the levels of 5-hydroxytryptamine (5-HT), γ-aminobutyric acid (GABA), corticotropin releasing hormone (CRH), and adrenocorticotrophin (ACTH). These corroborated the network analysis results indicating XCHG's effectiveness against fever in targeting NFKBIA, PTGS2, and GABBR2. The hypothalamus metabolomics analysis identified 14 distinct metabolites as potential antipyretic biomarkers of XCHG. In conclusion, our findings suggest that XCHG alleviates yeast-induced fever by regulating inflammation/immune responses, neuromodulation, and metabolism modules, providing a scientific basis for the anti-inflammatory and antipyretic properties of XCHG.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Weiwei Su
- Guangdong Engineering & Technology Research Center for Quality and Efficacy Reevaluation of Post-Market Traditional Chinese Medicine, Guangdong Provincial Key Laboratory of Plant Resources, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China
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3
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Salaria P, Subrahmanyeswara Rao NN, Dhameliya TM, Amarendar Reddy M. In silico investigation of potential phytoconstituents against ligand- and voltage-gated ion channels as antiepileptic agents. 3 Biotech 2024; 14:99. [PMID: 38456083 PMCID: PMC10914661 DOI: 10.1007/s13205-024-03948-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 01/28/2024] [Indexed: 03/09/2024] Open
Abstract
The most promising anticonvulsant phytocompounds were explored in this work using docking, molecular dynamic (MD) simulation, and Molecular Mechanics-Poisson-Boltzmann Surface Area (MM-PBSA) approaches. A total of 70 phytochemicals were screened against α-amino-3-hydroxyl-5-methyl-4-isoxazole propionic acid (AMPA), N-methyl-d-aspartate (NMDA), voltage-gated sodium ion channels (VGSC), and carbonic anhydrase enzyme II (CA II) receptors, and the docking results were compared to the reference drug phenytoin. Amentoflavone displayed the highest affinity for AMPA and VGSC receptors, with docking scores of - 10.4 and - 10.1 kcal/mol, respectively. Oliganthin H-NMDA and epigallocatechin-3-gallate-CA II complexes showed docking scores of - 10.9 and - 6.9 kcal/mol, respectively. All four complexes depicted a high dock score compared to the phenytoin complex at the binding site of the corresponding proteins. The MD simulation investigated the stabilities and favorable conformation of apoproteins and ligand/reference-bound complexes. The results revealed that proteins AMPA, VGSC, and CA II were more efficiently stabilized by lead phytochemicals than phenytoin binding. Additionally, principal component analysis and MM-PBSA results suggested that these lead phytocompounds have good compactness and strong binding free energy. Further, physicochemical and pharmacokinetic studies revealed that these final lead phytochemicals would be suitable for oral intake, have sufficient intestinal permeability, and have the ability to cross the blood-brain barrier (BBB). Comprehensively, this study predicted amentoflavone as the best lead phytochemical out of the 70 anticonvulsant phytocompounds that can be used to treat epilepsy. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-03948-1.
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Affiliation(s)
- Punam Salaria
- Department of Chemistry, School of Sciences, National Institute of Technology Andhra Pradesh, Tadepalligudem, Andhra Pradesh 534101 India
| | - N N Subrahmanyeswara Rao
- Department of Chemical Engineering, Gayatri Vidya Parishad College of Engineering (Autonomous), Visakhapatnam, Andhra Pradesh India
| | - Tejas M Dhameliya
- Department of Pharmaceutical Chemistry, Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat 382481 India
| | - M Amarendar Reddy
- Department of Chemistry, School of Sciences, National Institute of Technology Andhra Pradesh, Tadepalligudem, Andhra Pradesh 534101 India
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4
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Lu JQ, Luo ZY, Sun C, Wang SM, Sun D, Huang RJ, Yang X, Ding Y, Wang G. Baicalin administration could rescue high glucose-induced craniofacial skeleton malformation by regulating neural crest development. Front Pharmacol 2024; 15:1295356. [PMID: 38515837 PMCID: PMC10955141 DOI: 10.3389/fphar.2024.1295356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Accepted: 02/22/2024] [Indexed: 03/23/2024] Open
Abstract
Hyperglycemia in pregnancy can increase the risk of congenital disorders, but little is known about craniofacial skeleton malformation and its corresponding medication. Our study first used meta-analysis to review the previous findings. Second, baicalin, an antioxidant, was chosen to counteract high glucose-induced craniofacial skeleton malformation. Its effectiveness was then tested by exposing chicken embryos to a combination of high glucose (HG, 50 mM) and 6 μM baicalin. Third, whole-mount immunofluorescence staining and in situ hybridization revealed that baicalin administration could reverse HG-inhibited neural crest cells (NCC) delamination and migration through upregulating the expression of Pax7 and Foxd3, and mitigate the disordered epithelial-mesenchymal transition (EMT) process by regulating corresponding adhesion molecules and transcription factors (i.e., E-cadherin, N-cadherin, Cadherin 6B, Slug and Msx1). Finally, through bioinformatic analysis and cellular thermal shift assay, we identified the AKR1B1 gene as a potential target. In summary, these findings suggest that baicalin could be used as a therapeutic agent for high glucose-induced craniofacial skeleton malformation.
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Affiliation(s)
- Jia-Qi Lu
- The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
- Division of Histology and Embryology, International Joint Laboratory for Embryonic Development and Prenatal Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Zhi-Yan Luo
- The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
- Division of Histology and Embryology, International Joint Laboratory for Embryonic Development and Prenatal Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Chengyang Sun
- Division of Histology and Embryology, International Joint Laboratory for Embryonic Development and Prenatal Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Si-Miao Wang
- Division of Histology and Embryology, International Joint Laboratory for Embryonic Development and Prenatal Medicine, School of Medicine, Jinan University, Guangzhou, China
| | - Dixiang Sun
- Department of Pathology, Mengyin County Hospital of Traditional Chinese Medicine, Linyi, China
| | - Ruo-Jing Huang
- The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Xuesong Yang
- Division of Histology and Embryology, International Joint Laboratory for Embryonic Development and Prenatal Medicine, School of Medicine, Jinan University, Guangzhou, China
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, Jinan University, Guangzhou, China
| | - Yong Ding
- The First Affiliated Hospital of Jinan University, Jinan University, Guangzhou, China
| | - Guang Wang
- Division of Histology and Embryology, International Joint Laboratory for Embryonic Development and Prenatal Medicine, School of Medicine, Jinan University, Guangzhou, China
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, Jinan University, Guangzhou, China
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Sharawi ZW, Ibrahim IM, Abd-Alhameed EK, Althagafy HS, Jaber FA, Harakeh S, Hassanein EHM. Baicalin and lung diseases. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:1405-1419. [PMID: 37725153 DOI: 10.1007/s00210-023-02704-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Accepted: 08/30/2023] [Indexed: 09/21/2023]
Abstract
Studies focusing on natural products have been conducted worldwide, and the results suggest that their natural ingredients effectively treat a wide range of illnesses. Baicalin (BIA) is a glycoside derived from the flavonoid baicalein present in Scutellaria baicalensis of the Lamiaceae family. Interestingly, BIA has been shown to protect the lungs in several animal models used in numerous studies. Therefore, we fully analyzed the data of the studies that focused on BIA's lung protective function against various injuries and included them in this review. Interestingly, BIA exhibits promising effects against acute lung injury, lung fibrosis, pulmonary embolism, and lung remodelling associated with COPD, LPS, and paraquat insecticide. BAI exhibits anticancer activity against lung cancer. Additionally, BIA potently attenuates lung damage associated with infections. BIA primarily exerts its therapeutic effects by suppressing inflammation, oxidative stress immune response, and apoptosis pathways. Nrf2/HO-1, PI3K/Akt, NF-κB, STAT3, MAPKs, TLR4, and NLRP3 are important targets in the pulmonary therapeutic effects of BIA on different lung disease models. Consequently, we recommend using it in future potential clinical applications, its contribution to treatment guidelines, and translating its promising effects to clinical practice in lung diseases.
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Affiliation(s)
- Zeina W Sharawi
- Biological Sciences Department, Faculty of Sciences, King AbdulAziz University, Jeddah, Saudi Arabia
| | - Islam M Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Esraa K Abd-Alhameed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Hanan S Althagafy
- Department of Biochemistry, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Fatima A Jaber
- Department of Biology, College of Science, University of Jeddah, P.O. Box 80327, Jeddah, 21589, Saudi Arabia
| | - Steve Harakeh
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
- Yousef Abdul Lateef Jameel Chair of Prophetic Medicine Application, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Emad H M Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut, Egypt.
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Haghir Ebrahim Abadi MH, Ghasemlou A, Bayani F, Sefidbakht Y, Vosough M, Mozaffari-Jovin S, Uversky VN. AI-driven covalent drug design strategies targeting main protease (m pro) against SARS-CoV-2: structural insights and molecular mechanisms. J Biomol Struct Dyn 2024:1-29. [PMID: 38287509 DOI: 10.1080/07391102.2024.2308769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/17/2024] [Indexed: 01/31/2024]
Abstract
The emergence of new SARS-CoV-2 variants has raised concerns about the effectiveness of COVID-19 vaccines. To address this challenge, small-molecule antivirals have been proposed as a crucial therapeutic option. Among potential targets for anti-COVID-19 therapy, the main protease (Mpro) of SARS-CoV-2 is important due to its essential role in the virus's life cycle and high conservation. The substrate-binding region of the core proteases of various coronaviruses, including SARS-CoV-2, SARS-CoV, and Middle East respiratory syndrome coronavirus (MERS-CoV), could be used for the generation of new protease inhibitors. Various drug discovery methods have employed a diverse range of strategies, targeting both monomeric and dimeric forms, including drug repurposing, integrating virtual screening with high-throughput screening (HTS), and structure-based drug design, each demonstrating varying levels of efficiency. Covalent inhibitors, such as Nirmatrelvir and MG-101, showcase robust and high-affinity binding to Mpro, exhibiting stable interactions confirmed by molecular docking studies. Development of effective antiviral drugs is imperative to address potential pandemic situations. This review explores recent advances in the search for Mpro inhibitors and the application of artificial intelligence (AI) in drug design. AI leverages vast datasets and advanced algorithms to streamline the design and identification of promising Mpro inhibitors. AI-driven drug discovery methods, including molecular docking, predictive modeling, and structure-based drug repurposing, are at the forefront of identifying potential candidates for effective antiviral therapy. In a time when COVID-19 potentially threat global health, the quest for potent antiviral solutions targeting Mpro could be critical for inhibiting the virus.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | - Fatemeh Bayani
- Protein Research Center, Shahid Beheshti University, Tehran, Iran
| | - Yahya Sefidbakht
- Protein Research Center, Shahid Beheshti University, Tehran, Iran
| | - Massoud Vosough
- Department of Regenerative Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Sina Mozaffari-Jovin
- Department of Medical Genetics, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
- Medical Genetics Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vladimir N Uversky
- Department of Molecular Medicine, University of South Florida, Tampa, FL, USA
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Park SA, Nguyen TTP, Park SJ, Han SK. Naringenin modulates GABA mediated response in a sexdependent manner in substantia gelatinosa neurons of trigeminal subnucleus caudalis in immature mice. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2024; 28:73-81. [PMID: 38154966 PMCID: PMC10762483 DOI: 10.4196/kjpp.2024.28.1.73] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 12/13/2023] [Accepted: 12/13/2023] [Indexed: 12/30/2023]
Abstract
The substantia gelatinosa (SG) within the trigeminal subnucleus caudalis (Vc) is recognized as a pivotal site of integrating and modulating afferent fibers carrying orofacial nociceptive information. Although naringenin (4',5,7-thrihydroxyflavanone), a natural bioflavonoid, has been proven to possess various biological effects in the central nervous system (CNS), the activity of naringenin at the orofacial nociceptive site has not been reported yet. In this study, we explored the influence of naringenin on GABA response in SG neurons of Vc using whole-cell patch-clamp technique. The application of GABA in a bath induced two forms of GABA responses: slow and fast. Naringenin enhanced both amplitude and area under curve (AUC) of GABA-mediated responses in 57% (12/21) of tested neurons while decreasing both parameters in 33% (7/21) of neurons. The enhancing or suppressing effect of naringenin on GABA response have been observed, with enhancement occurring when the GABA response was slow, and suppression when it was fast. Furthermore, both the enhancement of slower GABA responses and the suppression of faster GABA responses by naringenin were concentration dependent. Interestingly, the nature of GABA response was also found to be sex-dependent. A majority of SG neurons from juvenile female mice exhibited slower GABA responses, whereas those from juvenile males predominantly displayed faster GABA responses. Taken together, this study indicates that naringenin plays a partial role in modulating orofacial nociception and may hold promise as a therapeutic target for treating orofacial pain, with effects that vary according to sex.
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Affiliation(s)
- Seon Ah Park
- Department of Oral Physiology, School of Dentistry & Institute of Oral Bioscience, Jeonbuk National University, Jeonju 54896, Korea
| | - Thao Thi Phuong Nguyen
- Faculty of Odonto – Stomatology, Hue University of Medicine and Pharmacy, Hue University, Hue 53000, Vietnam
| | - Soo Joung Park
- Department of Oral Physiology, School of Dentistry & Institute of Oral Bioscience, Jeonbuk National University, Jeonju 54896, Korea
| | - Seong Kyu Han
- Department of Oral Physiology, School of Dentistry & Institute of Oral Bioscience, Jeonbuk National University, Jeonju 54896, Korea
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Baicalein exerts anxiolytic and antinociceptive effects in a mouse model of posttraumatic stress disorder: Involvement of the serotonergic system and spinal delta-opioid receptors. Prog Neuropsychopharmacol Biol Psychiatry 2023; 122:110689. [PMID: 36462602 DOI: 10.1016/j.pnpbp.2022.110689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 11/26/2022] [Accepted: 11/28/2022] [Indexed: 12/05/2022]
Abstract
Post-traumatic stress disorder (PTSD) is a serious mental disease featured by a stress dysfunction that occurs after an individual has faced intense mental stress, often accompanied by anxiety and chronic pain. Currently, the mainstream drug for PTSD is serotonin reuptake inhibitors (SSRIs), however, their pain management for patients is limited. Baicalein, a Chinese traditional herbal medicine, has shown promising results in treating anxiety, depression, and pain. In this study, we found that baicalein may alleviate single prolonged stress (SPS)-induced PTSD-like behaviors in mice without altering baseline nociceptive sensitivity or activity. Meanwhile, baicalein increased the noradrenaline (NE) and serotonin (5-HT) content and decreased the ratio of 5-hydroxyindoleacetic acid (5-HIAA)/5-HT by inhibiting the activity of monoamine oxidase A (MAO-A) in SPS-induce mice. The anxiolytic and antinociceptive effects induced by baicalein were totally abolished by 5-HT depleting agents. Moreover, the anxiolytic effects of baicalein could be abolished by the 5-HT1A receptor antagonist WAY-100635, and the analgesic effects could be abolished by delta-opioid receptor antagonists in the spinal. Taken together, our study provides compelling evidence that baicalein reversed anxiety-like behaviors and neuropathic pain in PTSD through serotonergic system and spinal delta-opioid receptors.
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Ghasemlou A, Uskoković V, Sefidbakht Y. Exploration of potential inhibitors for SARS-CoV-2 Mpro considering its mutants via structure-based drug design, molecular docking, MD simulations, MM/PBSA, and DFT calculations. Biotechnol Appl Biochem 2023; 70:439-457. [PMID: 35642754 DOI: 10.1002/bab.2369] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 04/21/2022] [Indexed: 11/08/2022]
Abstract
The main protease (Mpro) of SARS-COV-2 plays a vital role in the viral life cycle and pathogenicity. Due to its specific attributes, this 3-chymotrypsin like protease can be a reliable target for the drug design to combat COVID-19. Since the advent of COVID-19, Mpro has undergone many mutations. Here, the impact of 10 mutations based on their frequency and five more based on their proximity to the active site was investigated. For comparison purposes, the docking process was also performed against the Mpros of SARS-COV and MERS-COV. Four inhibitors with the highest docking score (11b, α-ketoamide 13b, Nelfinavir, and PF-07321332) were selected for the structure-based ligand design via fragment replacement, and around 2000 new compounds were thus obtained. After the screening of these new compounds, the pharmacokinetic properties of the best ones were predicted. In the last step, comparative molecular dynamics (MD) simulations, molecular mechanics Poisson-Boltzmann surface area calculations (MM/PBSA), and density functional theory calculations were performed. Among the 2000 newly designed compounds, three of them (NE1, NE2, and NE3), which were obtained by modifications of Nelfinavir, showed the highest affinity against all the Mpro targets. Together, NE1 compound is the best candidate for follow-up Mpro inhibition and drug development studies.
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Affiliation(s)
| | - Vuk Uskoković
- TardigradeNano, LLC, Irvine, California, USA.,Department of Mechanical Engineering, San Diego State University, San Diego, California, USA
| | - Yahya Sefidbakht
- Protein Research Center, Shahid Beheshti University, Tehran, Iran
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10
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Jiang H, Yao Q, An Y, Fan L, Wang J, Li H. Baicalin suppresses the progression of Type 2 diabetes-induced liver tumor through regulating METTL3/m 6A/HKDC1 axis and downstream p-JAK2/STAT1/clevaged Capase3 pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 94:153823. [PMID: 34763315 DOI: 10.1016/j.phymed.2021.153823] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 09/27/2021] [Accepted: 10/21/2021] [Indexed: 05/27/2023]
Abstract
BACKGROUND Epidemiological and clinical evidence suggests that diabetes increases the risk of liver cancer. Although the co-occurrence of type 2 diabetes (T2D) and liver cancer is becoming more frequent, the underlying mechanisms remain unclear. Even though baicalin, extensively used in traditional Chinese medicine (TCM), can control T2D and inhibit liver cancer separately, minimal research is available regarding its possible effect on T2D-induced liver cancer. Thus, in the present study, we aimed to investigate the role of baicalin in T2D-induced hepatocellular cancer, and for the first time, we particularly emphasized the regulation of baicalin in genes RNA m6A in hepatocellular cancer. METHODS Here, we constructed a cell culture model under a high concentration of glucose and a T2D-induced liver tumor model to evaluate the in vitro and in vivo role of baicalin in T2D-induced liver cancer progression. After confirming the suppressive effect of baicalin and the HKDC1 antibody on T2D-induced liver tumors, the epigenetic alterations (DNA 5mC and RNA m6A) of the baicalin-regulated HKDC1 gene were detected using MS and q-PCR. Next, the METTL3 gene-regulated m6A (2854 site) was investigated using SELECT PCR. Finally, the impact of the other three baicalin analogs (baicalein, wogonoside, and wogonin) on tumor inhibition was tested in vivo while verifying the related RNA m6A mechanism. RESULTS The results showed that baicalin and the HKDC1 antibody suppressed T2D-induced liver tumor progression in vitro and in vivo. Furthermore, baicalin significantly inhibited the epigenetic modification (DNA 5mC and RNA m6A) of HKDC1 in HepG2 tumors, mainly targeting the RNA m6A site (2854). The m6A-related gene, METTL3, regulated the RNA m6A site (2854) of HKDC1, which was also restricted by baicalin. Moreover, the study verified that baicalin regulated the METTL3/HKDC1/JAK2/STAT1/caspase-3 pathway in liver cancer cells when exposed to a high glucose concentration. In addition, the three baicalin analogs were proven to regulate the m6A (2854 site) of HKDC1 and suppress T2D-induced liver tumors. CONCLUSIONS The findings of this study revealed that baicalin suppressed T2D-induced liver tumor progression by regulating the METTL3/m6A/HKDC1 axis, which might support its potential application for preventing and treating T2D-induced liver cancer.
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Affiliation(s)
- Hongpeng Jiang
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Xi-Cheng District, Beijing 100050, China
| | - Qianqian Yao
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Haidian District, Beijing 100193, China
| | - Yongbo An
- Department of General Surgery, Beijing Friendship Hospital, Capital Medical University, Beijing Key Laboratory of Cancer Invasion and Metastasis Research & National Clinical Research Center for Digestive Diseases, Xi-Cheng District, Beijing 100050, China
| | - Linlin Fan
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Haidian District, Beijing 100193, China
| | - Jing Wang
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China.
| | - Huiying Li
- Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Haidian District, Beijing 100193, China.
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Zhang XT, Wang G, Ye LF, Pu Y, Li RT, Liang J, Wang L, Lee KKH, Yang X. Baicalin reversal of DNA hypermethylation-associated Klotho suppression ameliorates renal injury in type 1 diabetic mouse model. Cell Cycle 2020; 19:3329-3347. [PMID: 33190590 DOI: 10.1080/15384101.2020.1843815] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Baicalin is a flavone glycoside that possesses numerous pharmacological properties. but its protective mode of action in kidney injury induced by diabetes mellitus remains incompletely understood. Using a streptozotocin (STZ)-induced diabetic mouse model, we found that baicalin could ameliorate diabetes-induced the pathological changes of the kidney function and morphology through suppressing inflammation and oxidative stress. Furthermore, baicalin treatment could alleviate interstitial fibrosis in the diabetic kidney via inhibiting epithelial-to-mesenchymal transition (EMT), which was accompanied by a sharp upregulation of Klotho, the endogenous inhibitor of renal fibrosis. We further verified that baicalin-rescued expression of Klotho was associated with Klotho promoter hypomethylation due to aberrant methyltransferase 3a expressions. Klotho knockdown via RNA interferences largely abrogated the anti-renal fibrotic effects of Baicalin in HK2 cells. These findings suggested that baicalin could alleviate renal injury-induced by diabates through partly modulating Klotho promoter methylation, which provides new insights into the treatment of diabetic nephropathy.
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Affiliation(s)
- Xiao-Tan Zhang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China.,Department of Clinical Pathology, The First Affiliated Hospital of Jinan University , Guangzhou, China
| | - Guang Wang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Liu-Fang Ye
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Yu Pu
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Run-Tong Li
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Jianxin Liang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China
| | - Lijun Wang
- Department of Public Health, Medical College, Jinan University , Guangzhou, China
| | - Kenneth Ka Ho Lee
- Key Laboratory for Regenerative Medicine of the Ministry of Education, School of Biomedical Sciences, Chinese University of Hong Kong , Shatin, Hong Kong
| | - Xuesong Yang
- International Joint Laboratory for Embryonic Development & Prenatal Medicine, Division of Histology and Embryology, Medical College, Jinan University , Guangzhou, China.,Key Laboratory for Regenerative Medicine of the Ministry of Education, Jinan University , Guangzhou, China
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Huang Y, Ma S, Wang Y, Yan R, Wang S, Liu N, Chen B, Chen J, Liu L. The Role of Traditional Chinese Herbal Medicines and Bioactive Ingredients on Ion Channels: A Brief Review and Prospect. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2020; 18:257-265. [PMID: 30370864 DOI: 10.2174/1871527317666181026165400] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 06/20/2018] [Accepted: 06/20/2018] [Indexed: 12/18/2022]
Abstract
Traditional Chinese Medicines (TCMs), particularly the Chinese herbal medicines, are valuable sources of medicines and have been used for centuries. The term "TCMs" both represents to the single drug agent like Salvia miltiorrhiza, Ligusticum chuanxiong and Angelica sinensis, and those herbal formulas like Jingshu Keli, Wenxin Keli and Danzhen powder. In recent years, the researches of TCMs developed rapidly to understand the scientific basis of these herbs. In this review, we collect the studies of TCM and their containing bioactive compounds, and attempt to provide an overview for their regulatory effects on different ion channels including Ca2+, K+, Na+, Cl- channels and TRP, P2X receptors. The following conditions are used to limit the range of our review. (i) Only the herbal materials are included in this review and the animal- and mineral-original TCMs are excluded. (ii) The major discussions in this review focus on single TCM agent and the herbal formulas are only discussed for a little. (iii) Those most famous herbal medicines like Capsicum annuum (pepper), Curcuma longa (ginger) and Cannabis sativa (marijuana) are excluded. (iv) Only those TCM herbs with more than 5 research papers confirming their effects on ion channels are discussed in this review. Our review discusses recently available scientific evidences for TCMs and related bioactive compounds that have been reported with the modulatory effects on different ion channels, and thus provides a new ethnopharmacological approach to understand the usage of TCMs.
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Affiliation(s)
- Yian Huang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Shumei Ma
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Yan Wang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Renjie Yan
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Sheng Wang
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Nan Liu
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Ben Chen
- Laboratory of Cell Asymmetry, RIKEN Center for Developmental Biology, Kobe 650-0047, Japan.,Department of CNS Research, New Drug Research Division, Otsuka Pharmaceutical Co., Ltd., Tokushima 771-0192, Japan
| | - Jia Chen
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China
| | - Li Liu
- State Key Laboratory of New Drug and Pharmaceutical Process, Shanghai Institute of Pharmaceutical Industry, China State Institute of Pharmaceutical Industry, Shanghai 200437, China.,Shanghai Professional and Technical Service Center for Biological Material Drug-ability Evaluation, Shanghai 200437, China
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Anxiolytic-like activity of 5-methoxyflavone in mice with involvement of GABAergic and serotonergic systems - in vivo and in silico evidences. Eur Neuropsychopharmacol 2020; 36:100-110. [PMID: 32534819 DOI: 10.1016/j.euroneuro.2020.05.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 05/07/2020] [Accepted: 05/24/2020] [Indexed: 11/23/2022]
Abstract
Anxiety disorders are common worldwide and novel compounds are investigated for anxiolytic effect. A few studies have demonstrated the anxiolytic-like activity of natural and synthetic flavonoids. 5-methoxyflavone, a synthetic flavone derivative, has been reported to exhibit central nervous system depressant (sedative-hypnotic) effect in an earlier study. The present study was designed to investigate whether 5-methoxyflavone possesses anxiolytic-like activity in mice by employing two unconditioned models of anxiety such as elevated plus maze and light-dark box test. The possible role played by GABAergic (GABAA) and serotonergic (5HT1A) systems in the anxiolytic-like effect of 5-methoxyflavone was also investigated in the elevated plus maze test. Molecular docking studies were performed to ascertain the interaction of 5-methoxyflavone with GABAA (α2 subunit-containing) and 5HT1A receptors. 5-methoxyflavone treatment in mice (10, 20 or 40 mg/kg, i.p) increased the number of entries and time spent in the open arms in an elevated plus maze (p < 0.001). In the light-dark box test a significant increase in the time spent in light compartment (p < 0.001) and prolonged latency to enter the dark compartment (p < 0.01) were also observed. Pretreatment of mice with 5HT1A antagonist pindolol (10 mg/kg, i.p) or GABAA antagonist bicuculline (2 mg/kg, i.p) significantly attenuated the effect of 5-methoxyflavone in the elevated plus maze test. In silico studies provided evidences for good binding affinity of 5-methoxyflavone towards GABAA (α2 subunit-containing) and serotonergic (5HT1A) receptors by H-bond interactions. In conclusion, the present study identified a novel anxiolytic-like effect of 5-methoxyflavone involving GABAergic and serotonergic mechanisms.
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Nam JE, Jo SY, Ahn CW, Kim YS. Baicalin attenuates fibrogenic process in human renal proximal tubular cells (HK-2) exposed to diabetic milieu. Life Sci 2020; 254:117742. [PMID: 32360619 DOI: 10.1016/j.lfs.2020.117742] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 04/27/2020] [Accepted: 04/28/2020] [Indexed: 12/13/2022]
Abstract
AIMS Baicalin, a flavonoid glycoside substance extracted from Scutellaria baicalensis Georgi, has been shown to exhibit multiple therapeutic properties owing to its anti-inflammatory effect. Diabetes is characterized by chronic hyperglycemia, inflammation and oxidative stress, which promote renal fibrosis and kidney failure. Although anti-fibrogenic effects of baicalin in lung and liver have been reported previously, no study has investigated its roles in renal fibrosis. Here, we demonstrated protective effects of baicalin against fibrogenic process in human kidney proximal tubular epithelial cells (HK-2) exposed to diabetic milieu. MAIN METHODS To investigate the effects of baicalin on oxidative stress- and inflammation-induced fibrosis in HK-2 cells, protein and gene expressions of NF-κB- and STAT3-associated inflammatory molecules and TGFβ-associated extracellular matrix proteins were examined by western blotting, immunocytochemistry and qRT-PCR. To determine physiological changes of HK-2 exposed to diabetic milieu in response to baicalin, production of cAMP and cGMP and Ca2+ influx were measured. KEY FINDINGS Baicalin attenuated oxidative stress- and inflammation-inudced IκB and JAK2 phosphorylations and, subsequent, NF-κB nuclear translocation and STAT3 phosphorylation. Consequently, it markedly reduced transactivation of NF-κB- and STAT3-associated inflammatory genes such as ICAM1, VCAM1, TGFβ, IL1β and MCP1, and protein expression of TGFβ-associated extracellular matrix proteins, such as fibronectin and collagen IV. These effects are, partially, attributed to its regulatory function of intracellular concentration of Ca2+ via interaction with type A γ-aminobutyric acid receptor. SIGNIFICANCE This is the first study which investigated anti-fibrogenic effect of baicalin in human kidney cells, and our results highlight a potential therapeutic application of baicalin for diabetic nephropathy.
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Affiliation(s)
- Jung Eun Nam
- Brain Korea 21 PLUS Project for medical Science, Yonsei University, Seoul, Republic of Korea
| | - So Yeon Jo
- Department of Medicine, the Graduate school of Yonsei University, Seoul, Republic of Korea
| | - Chul Woo Ahn
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Republic of Korea; Division of Endocrinology, Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Yu Sik Kim
- Severance Institute for Vascular and Metabolic Research, Yonsei University College of Medicine, Seoul, Republic of Korea.
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Zhang Y, Zhang M, Hu G, Zhang Z, Song R. Elevated system exposures of baicalin after combinatory oral administration of rhein and baicalin: Mainly related to breast cancer resistance protein (ABCG2), not UDP-glucuronosyltransferases. JOURNAL OF ETHNOPHARMACOLOGY 2020; 250:112528. [PMID: 31884038 DOI: 10.1016/j.jep.2019.112528] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 10/10/2019] [Accepted: 12/25/2019] [Indexed: 05/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A traditional Chinese medicine (TCM) prescription follows the principle of compatibility (peiwu) to achieve the fundamental purpose: to increase efficacy and reduce toxicity. Rhei rhizoma, commonly known as Chinese rhubarb, is the most frequently used herb with Radix Scutellariaee. This classic fixed compatibility is considered for heat-clearing, qi regulation and detoxifying to gain better efficacy and reduce cytotoxicity with respect to unilateral medicine. With this in mind, we propose it is highly promising to find ingredients in rhubarb to increase the bioavailability of baicalin. AIM OF STUDY In the present study, effect of rhien on pharmacokinetic profile of baicalin in rat plasma was investigated, and the underlying mechanisms were partly dissected through intestinal absorption, metabolism and biliary excretion with in vivo, in vitro and in situ assays. MATERIALS AND METHODS Pharmacokinetic analysis in rats was first performed to provide a general overview of the in vivo exposure of baicalin and rhein after co-administration, while the biliary excretion study provided insight to the effect of rhein on the transport of baicalin from hepatocytes to bile. In vitro incubation and inhibition studies in human/rat liver microsome and human/rat intestinal S9 fraction were conducted to elucidate the role of uridine diphosphate-glucuronosyltransferases (UGTs) on the hepatic and intestinal metabolism of baicalein (the aglycone of baicalin), and to determine whether rhein can affect the UGT-mediated glucuronidation of baicalein. In situ intestinal perfusion study was designed to investigate the effect of rhein on intestinal absorption of baicalin, and breast cancer resistance protein (BCRP) inhibitor was co-perfused as positive control to demonstrate the role of the efflux transporter, while BCRP-MDCK II cell(Madin-Daby canine kidney cell) model was used as an in vitro approach to further confirm the conclusion. RESULTS The AUC and Cmax of baicalin were increased to 189.93% and 305.73%, respectively, and the clearance of baicalin was significantly decreased from 4.17 ± 2.40 to 1.65 ± 0.79 L/h/kg following oral co-administration of rhein. The AUC of baicalin was markedly increased and the biliary clearance was significantly decreased when baicalin and rhein were co-administered intravenously. The effect of rhein on the glucuronidation of baicalein in various subcellular fractions was examined, and it was found that rhein did not affect the UGT-mediated glucuronidation of baicalein. Results of in situ intestinal perfusion revealed that co-perfusion with Ko143 (a potent BCRP inhibitor) or rhein significantly reduced the cumulative excretion amount of baicalin, from 9.27 ± 2.79 to 2.80 ± 0.97 or 4.84 ± 0.60 nM, respectively. Additionally, the efflux ratio Papp(BL-AP)/Papp(AP-BL) of baicalin in BCRP-MDCK II was decreased significantly in the presence of rhein or Ko143, which meant rhein could inhibit the BCRP-mediated efflux transport of baicalin. CONCLUSIONS These results indicated that rhein can increase the bioavailability of baicalin by inhibiting BCRP-mediated efflux transport of baicalin in enterocytes and hepatocytes rather than by affecting the activity of UGT enzyme.
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Affiliation(s)
- Yaqing Zhang
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, 24 Tongjia Lane, Nanjing, 210009, China; State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, 210009, China; Analysis Center, Hubei Bio-Pharmaceutical Industrial Technological Institute Co., Ltd, Wuhan, 430075, China.
| | - Mei Zhang
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, 24 Tongjia Lane, Nanjing, 210009, China; State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, 210009, China.
| | - Guangnan Hu
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, 24 Tongjia Lane, Nanjing, 210009, China; State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, 210009, China.
| | - Zunjian Zhang
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, 24 Tongjia Lane, Nanjing, 210009, China; State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, 210009, China.
| | - Rui Song
- Key Laboratory of Drug Quality Control and Pharmacovigilance, China Pharmaceutical University, 24 Tongjia Lane, Nanjing, 210009, China; State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing, 210009, China.
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Limanaqi F, Biagioni F, Busceti CL, Polzella M, Fabrizi C, Fornai F. Potential Antidepressant Effects of Scutellaria baicalensis, Hericium erinaceus and Rhodiola rosea. Antioxidants (Basel) 2020; 9:antiox9030234. [PMID: 32178272 PMCID: PMC7139475 DOI: 10.3390/antiox9030234] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 03/03/2020] [Accepted: 03/10/2020] [Indexed: 12/11/2022] Open
Abstract
Recent studies focused on the pharmacology and feasibility of herbal compounds as a potential strategy to target a variety of human diseases ranging from metabolic to brain disorders. Accordingly, bioactive ingredients which are found within a variety of herbal compounds are reported to produce both neuroprotective and psychotropic activities which may help to combat mental disorders such as depression, anxiety, sleep disturbances and cognitive alterations. In the present manuscript, we focus on three herbs which appear effective in mitigating anxiety or depression with favourable risk-benefit profiles, namely Scutellaria baicalensis (S. baicalensis), Hericium erinaceus (H. erinaceus) and Rhodiola rosea (R. rosea). These three traditional folk medicinal herbs target the main biochemical events that are implicated in mental disorders, mimicking, to some extent, the mechanisms of action of conventional antidepressants and mood stabilizers with a wide margin of tolerability. In detail, they rescue alterations in neurotransmitter and neuro-endocrine systems, stimulate neurogenesis and the synthesis of neurotrophic factors, and they counteract oxidative stress, mitochondrial dysfunction and inflammation. Albeit the encouraging results that emerge from both experimental and clinical evidence, further studies are needed to confirm and better understand the mental-health promoting, and specifically, the antidepressant effects of these herbs.
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Affiliation(s)
- Fiona Limanaqi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126, Pisa, Italy;
| | - Francesca Biagioni
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077, Pozzilli, Italy; (F.B.); (C.L.B.)
| | - Carla Letizia Busceti
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077, Pozzilli, Italy; (F.B.); (C.L.B.)
| | - Maico Polzella
- Aliveda Laboratories, Viale Karol Wojtyla, 19, 56042 Lorenzana, (PI), Italy;
| | - Cinzia Fabrizi
- Department of Anatomy, Histology, Forensic Medicine and Orthopedics, Sapienza University of Rome, Via A. Borelli 50, 00161, Rome, Italy;
| | - Francesco Fornai
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Via Roma 55, 56126, Pisa, Italy;
- I.R.C.C.S. Neuromed Pozzilli, Via Atinense, 18, 86077, Pozzilli, Italy; (F.B.); (C.L.B.)
- Correspondence:
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Rebas E, Rzajew J, Radzik T, Zylinska L. Neuroprotective Polyphenols: A Modulatory Action on Neurotransmitter Pathways. Curr Neuropharmacol 2020; 18:431-445. [PMID: 31903883 PMCID: PMC7457434 DOI: 10.2174/1570159x18666200106155127] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 12/03/2019] [Accepted: 01/04/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Balance in neurotransmission is essential for the proper functioning of the nervous system and even a small, but prolonged disturbance, can induce the negative feedback mechanisms leading to various neuropathologies. Neurodegenerative and mood disorders such as Alzheimer's, Parkinson's or affective disorders are increasing medical and social problems. Among the wide spectrum of potentially destructive events, oxidative stress and disrupted metabolism of some neurotransmitters such as acetylcholine, GABA, glutamate, serotonin or dopamine appear to play a decisive role. Biologically active plant polyphenols have been shown to exert a positive impact on the function of the central nervous system by modulation of metabolism and the action of some neurotransmitters. METHODS Based on published research, the pharmacological activities of some naturally occurring polyphenols have been reviewed, with a focus on their potential therapeutic importance in the regulation of neurotransmitter systems. RESULTS Phytochemicals can be classified into several groups and most of them possess anticancer, antioxidative, anti-inflammatory and neuroprotective properties. They can also modulate the metabolism or action of some neurotransmitters and/or their receptors. Based on these properties, phytochemicals have been used in traditional medicine for ages, although it was focused mainly on treating symptoms. However, growing evidence indicates that polyphenols may also prevent or slow neurological diseases. CONCLUSION Phytochemicals seem to be less toxic than synthetic drugs and they can be a safer alternative for currently used preparations, which exert adverse side effects. The neuroprotective actions of some plant polyphenols in the regulation of neurotransmitters metabolism, functioning of neurotransmitters receptors and antioxidative defense have potential therapeutic applications in various neurodegenerative disorders.
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Affiliation(s)
- Elzbieta Rebas
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Jowita Rzajew
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Tomasz Radzik
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
| | - Ludmila Zylinska
- Department of Molecular Neurochemistry, Faculty of Health Sciences, Medical University of Lodz, Lodz, Poland
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Khan AU, Akram M, Daniyal M, Akhter N, Riaz M, Akhtar N, Shariati MA, Anjum F, Khan SG, Parveen A, Ahmad S. Awareness and current knowledge of epilepsy. Metab Brain Dis 2020; 35:45-63. [PMID: 31605258 DOI: 10.1007/s11011-019-00494-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 09/12/2019] [Indexed: 12/29/2022]
Abstract
Epilepsy is a severe neural disorder that affects approximately fifty million individuals globally. Despite the fact that for most of the people with epilepsy, convulsions are better controlled by current accessible antiepileptic medicines, yet there are more than 30% of individuals affected with medically intractable epilepsy and around 30-40% of all patients with epilepsy affected by many adverse reactions and convulsion resistance to the present antiepileptic drugs. Consequently, various scientists attempt to develop new strategies to treat epilepsy, for instance, to find out novel antiepileptic ingredients from traditional medicines. This work aims to present a complete summary of natural medicines prescribed as antiepileptic agents all over the world by ethnic groups and different tribes. We undertook an extensive bibliographic analysis by searching peer reviewed papers and classical textbooks and further consulting well accepted worldwide scientific databases. We carried out PubMed, EMbase and CENTRAL searches by means of terms such as "antiepileptic" and "anti-convulsant" activity of plants. Medicinal plants have been prescribed to treat epilepsy and have been recognized as antiepileptic medicines. In this review, a variety of herbs have been reviewed for thorough studies such as Cuminum cyminum, Butea monosperma, Solanum americanum, Anacyclus pyrethrum, Leonotis leonurus, Elaeocarpus ganitrus and Angelica archangelica. This paper shows that it was high time experimental studies are increased to obtain novel potential active principles from medicinal plants. Plant extracts and their chemical constituents should be further evaluated to clarify their mechanisms of action. This paper provides a solid base upon which to further investigate the clinical efficacy of medicinal plants that are both currently prescribed by physicians as traditional antiepileptic agents, but also could be effective as an antiepileptic drug with further research and study.
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Affiliation(s)
- Asmat Ullah Khan
- Department of Eastern Medicine, The University of Poonch, Rawalakot, Azad Jammu and Kashmir, Pakistan
| | - Muhammad Akram
- Department of Eastern Medicine, Government College University, Faisalabad, Pakistan
| | - Muhammad Daniyal
- TCM and Ethnomedicine Innovation & Development International Laboratory, Innovative Materia Medica Research Institute, School of Pharmacy, Hunan University of Chinese Medicine, Changsha, China
| | - Naheed Akhter
- College of Allied Health Professional, Government College University, Faisalabad, Pakistan
| | - Muhammad Riaz
- Department of Allied Health Sciences, Sargodha Medical College, University of Sargodha, Sargodha, Pakistan
| | - Naheed Akhtar
- Department of Pharmacy, The University of Poonch, Rawalakot, Azad Jammu and Kashmir, Pakistan
| | - Mohammad Ali Shariati
- Kazakh Research Institute of Processing and Food industry (Semey branch), Semey, Kazakhstan
| | - Fozia Anjum
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Samreen Gul Khan
- Department of Chemistry, Government College University, Faisalabad, Pakistan
| | - Abida Parveen
- Department of Botany, Government College University, Faisalabad, Pakistan
| | - Saeed Ahmad
- University College of Agriculture, University of Sargodha, Sargodha, Pakistan.
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Chung EJ, Reedy JL, Kwon S, Patil S, Valle L, White AO, Citrin DE. 12-Lipoxygenase is a Critical Mediator of Type II Pneumocyte Senescence, Macrophage Polarization and Pulmonary Fibrosis after Irradiation. Radiat Res 2019; 192:367-379. [PMID: 31373871 DOI: 10.1667/rr15356.1] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Radiation-induced pulmonary fibrosis (RIPF) is a chronic, progressive complication of therapeutic irradiation of the thorax. It has been suggested that senescence of type II pneumocytes (AECIIs), an alveolar stem cell, plays a role in the development of RIPF through loss of replicative reserve and via senescent AECII-driven release of proinflammatory and profibrotic cytokines. Within this context, we hypothesized that arachidonate 12-lipoxygenase (12-LOX) is a critical mediator of AECII senescence and RIPF. Treatment of wild-type AECIIs with 12S-hydroxyeicosateraenoic acid (12S-HETE), a downstream product of 12-LOX, was sufficient to induce senescence in a NADPH oxidase 4 (NOX4)-dependent manner. Mice deficient in 12-LOX exhibited reduced AECII senescence, pulmonary collagen accumulation and accumulation of alternatively activated (M2) macrophages after thoracic irradiation (5 × 6 Gy) compared to wild-type mice. Conditioned media from irradiated or 12S-HETE-treated primary pneumocytes contained elevated levels of IL-4 and IL-13 compared to untreated pneumocytes. Primary macrophages treated with conditioned media from irradiated AECII demonstrated preferential M2 type polarization when AECIIs were derived from wild-type mice compared to 12-LOX-deficient mice. Together, these data identified 12-LOX as a critical component of RIPF and a therapeutic target for radiation-induced lung injury.
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Affiliation(s)
- Eun Joo Chung
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
| | - Jessica L Reedy
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
| | - Seokjoo Kwon
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
| | - Shilpa Patil
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
| | - Luca Valle
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
| | - Ayla O White
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
| | - Deborah E Citrin
- Radiation Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892
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Baicalin regulates depression behavior in mice exposed to chronic mild stress via the Rac/LIMK/cofilin pathway. Biomed Pharmacother 2019; 116:109054. [DOI: 10.1016/j.biopha.2019.109054] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 05/30/2019] [Accepted: 05/30/2019] [Indexed: 12/12/2022] Open
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Rehman MU, Wali AF, Ahmad A, Shakeel S, Rasool S, Ali R, Rashid SM, Madkhali H, Ganaie MA, Khan R. Neuroprotective Strategies for Neurological Disorders by Natural Products: An update. Curr Neuropharmacol 2019; 17:247-267. [PMID: 30207234 PMCID: PMC6425075 DOI: 10.2174/1570159x16666180911124605] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 08/02/2018] [Accepted: 09/05/2018] [Indexed: 01/30/2023] Open
Abstract
Nature has bestowed mankind with surplus resources (natural products) on land and water. Natural products have a significant role in the prevention of disease and boosting of health in humans and animals. These natural products have been experimentally documented to possess various biological properties such as antioxidant, anti-inflammatory and anti-apoptotic activities. In vitro and in vivo studies have further established the usefulness of natural products in various preclinical models of neurodegenerative disorders. Natural products include phytoconstituents, like polyphenolic antioxidants, found in herbs, fruits, nuts, vegetables and also in marine and freshwater flora. These phytoconstituents may potentially suppress neurodegeneration and improve memory as well as cognitive functions of the brain. Also, they are known to play a pivotal role in the prevention and cure of different neurodegenerative diseases, such as Alzheimer's disease, epilepsy, Parkinson's disease and other neuronal disorders. The large-scale neuro-pharmacological activities of natural products have been documented due to the result of either the inhibition of inflammatory processes, or the up-regulation of various cell survival proteins or a combination of both. Due to the scarcity of human studies on neuroprotective effects of natural products, this review focuses on the various established activities of natural products in in vitro and in vivo preclinical models, and their potential neuro-therapeutic applications using the available knowledge in the literature.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Rehan Khan
- Address correspondence to this author at the Department of Nano-Therapeutics, Institute of Nano Science & Technology, Habitat Centre, Phase X, Mohali-160062, Punjab, India; E-mail:
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Setzer WN. The Phytochemistry of Cherokee Aromatic Medicinal Plants. MEDICINES (BASEL, SWITZERLAND) 2018; 5:E121. [PMID: 30424560 PMCID: PMC6313439 DOI: 10.3390/medicines5040121] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Revised: 11/06/2018] [Accepted: 11/08/2018] [Indexed: 12/13/2022]
Abstract
Background: Native Americans have had a rich ethnobotanical heritage for treating diseases, ailments, and injuries. Cherokee traditional medicine has provided numerous aromatic and medicinal plants that not only were used by the Cherokee people, but were also adopted for use by European settlers in North America. Methods: The aim of this review was to examine the Cherokee ethnobotanical literature and the published phytochemical investigations on Cherokee medicinal plants and to correlate phytochemical constituents with traditional uses and biological activities. Results: Several Cherokee medicinal plants are still in use today as herbal medicines, including, for example, yarrow (Achillea millefolium), black cohosh (Cimicifuga racemosa), American ginseng (Panax quinquefolius), and blue skullcap (Scutellaria lateriflora). This review presents a summary of the traditional uses, phytochemical constituents, and biological activities of Cherokee aromatic and medicinal plants. Conclusions: The list is not complete, however, as there is still much work needed in phytochemical investigation and pharmacological evaluation of many traditional herbal medicines.
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Affiliation(s)
- William N Setzer
- Department of Chemistry, University of Alabama in Huntsville, Huntsville, AL 35899, USA.
- Aromatic Plant Research Center, 230 N 1200 E, Suite 102, Lehi, UT 84043, USA.
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Sieghart W, Savić MM. International Union of Basic and Clinical Pharmacology. CVI: GABAA Receptor Subtype- and Function-selective Ligands: Key Issues in Translation to Humans. Pharmacol Rev 2018; 70:836-878. [DOI: 10.1124/pr.117.014449] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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Neuroprotective and Cognitive Enhancement Potentials of Baicalin: A Review. Brain Sci 2018; 8:brainsci8060104. [PMID: 29891783 PMCID: PMC6025220 DOI: 10.3390/brainsci8060104] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/05/2018] [Accepted: 06/08/2018] [Indexed: 12/20/2022] Open
Abstract
Neurodegenerative diseases are a heterogeneous group of disorders that are characterized by the gradual loss of neurons. The development of effective neuroprotective agents to prevent and control neurodegenerative diseases is specifically important. Recently, there has been an increasing interest in selecting flavonoid compounds as potential neuroprotective agents, owing to their high effectiveness with low side effects. Baicalin is one of the important flavonoid compounds, which is mainly isolated from the root of Scutellaria baicalensis Georgi (an important Chinese medicinal herb). In recent years, a number of studies have shown that baicalin has a potent neuroprotective effect in various in vitro and in vivo models of neuronal injury. In particular, baicalin effectively prevents neurodegenerative diseases through various pharmacological mechanisms, including antioxidative stress, anti-excitotoxicity, anti-apoptotic, anti-inflammatory, stimulating neurogenesis, promoting the expression of neuronal protective factors, etc. This review mainly focuses on the neuroprotective and cognitive enhancement effects of baicalin. The aim of the present review is to compile all information in relation to the neuroprotective and cognitive enhancement effects of baicalin and its molecular mechanisms of action in various in vitro and in vivo experimental models.
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Gomes Júnior AL, Tchekalarova JD, Machado KDC, Moura AKS, Paz MFCJ, da Mata AMOF, Nogueira TR, Islam MT, Rios MADS, Graças Lopes Citó AMD, Uddin SJ, Shilpi JA, Das AK, Lopes LDS, Melo-Cavalcante AADC. Anxiolytic effect of anacardic acids from cashew (Anacardium occidentale) nut shell in mice. IUBMB Life 2018; 70:420-431. [PMID: 29573147 DOI: 10.1002/iub.1738] [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: 12/01/2017] [Revised: 01/09/2018] [Accepted: 01/25/2018] [Indexed: 12/18/2022]
Abstract
Antianxiety drugs currently in use are associated with a number of serious side effects. Present study was designed to evaluate the efficacy of anacardic acids (AAs) isolated from cashew nut (Anacardium occidentale L.) shell liquid (CNSL) to treat anxiety as well as its role in oxidative stress in mice model. Anxiolytic effect of AA was evaluated using rota-rod and a set of behavioral tests in male Swiss albino mice at the doses of 10, 25, and 50 mg/kg. Flumazenil was used to evaluate the possible involvement of GABAergic system in the mechanism of action of AA. The effect of AA on oxidative stress in mice was evaluated by determining the concentration of malondialdehyde (MDA), reduced glutathione, and catalase (CAT) activity. The detection of DNA damage of the treated animals was performed using alkaline comet test in the hippocampus and frontal cortex of the animals. The results demonstrated that AA did not produce myorelaxant and sedative effects, nor did it cause a decrease in locomotor activity. The anxiolytic effect of AA was well-evident in all tests, especially at higher dose levels (25 and 50 mg/mg). Flumazenil reversed the anxiolytic effect of AA at all doses. In addition, AA reduced oxidative stress by decreasing the concentration of MDA and increasing the levels of reduced glutathione (GSH) and CAT activity. Statistical analysis by Pearson's correlation indicated a positive correlation between anxiolytic effect of AA to its antioxidant and lipid peroxidation inhibitory activity. Furthermore, increased CAT activity and GSH concentrations in the hippocampus and frontal cortex of mice was also complementary to the reduced genotoxic damage observed in the study. In comet assay, AA did not increase in DNA damage. In conclusion, the results supported that AA possesses GABAA receptor mediated anxiolytic activity with the lack of myorelaxation and genotoxicity. © 2018 IUBMB Life, 70(5):420-431, 2018.
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Affiliation(s)
- Antonio Luiz Gomes Júnior
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil.,Program of Postgraduate in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Brazil
| | | | - Keylla da Conceição Machado
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil.,Program of Postgraduate in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Brazil
| | - Arkellau Kenned Silva Moura
- Department of Chemistry, Science Center of Nature, Federal University of Piauí, University Campus Minister Petrônio Portella, Teresina, PI, Brazil
| | - Márcia Fernanda Correia Jardim Paz
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil.,Program of Postgraduate in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Brazil
| | | | - Tiago Rocha Nogueira
- Technological Innovation Group and Chemical Specialties - GRINTEQUI, Federal University of Ceará, Fortaleza, Brazil
| | - Muhammad Torequl Islam
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam.,Faculty of Pharmacy, Ton Duc Thang University, Ho Chi Minh City, 700000, Vietnam
| | - Maria Alexsandra de Sousa Rios
- Department of Chemistry, Science Center of Nature, Federal University of Piauí, University Campus Minister Petrônio Portella, Teresina, PI, Brazil
| | - Antônia Maria das Graças Lopes Citó
- Department of Chemistry, Science Center of Nature, Federal University of Piauí, University Campus Minister Petrônio Portella, Teresina, PI, Brazil
| | - Shaikh Jamal Uddin
- Pharmacy Discipline, Life Science School, Khulna University, Khulna, Bangladesh
| | - Jamil A Shilpi
- Pharmacy Discipline, Life Science School, Khulna University, Khulna, Bangladesh
| | - Asish K Das
- Pharmacy Discipline, Life Science School, Khulna University, Khulna, Bangladesh
| | - Luciano da Silva Lopes
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil
| | - Ana Amélia de Carvalho Melo-Cavalcante
- Postgraduate Program in Pharmaceutical Sciences, Federal University of Piauí, Teresina, Brazil.,Program of Postgraduate in Biotechnology (RENORBIO), Federal University of Piauí, Teresina, Brazil
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Baicalin administration attenuates hyperglycemia-induced malformation of cardiovascular system. Cell Death Dis 2018; 9:234. [PMID: 29445081 PMCID: PMC5833405 DOI: 10.1038/s41419-018-0318-2] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/12/2018] [Accepted: 01/16/2018] [Indexed: 12/18/2022]
Abstract
In this study, the effects of Baicalin on the hyperglycemia-induced cardiovascular malformation during embryo development were investigated. Using early chick embryos, an optimal concentration of Baicalin (6 μM) was identified which could prevent hyperglycemia-induced cardiovascular malformation of embryos. Hyperglycemia-enhanced cell apoptosis was reduced in embryos and HUVECs in the presence of Baicalin. Hyperglycemia-induced excessive ROS production was inhibited when Baicalin was administered. Analyses of SOD, GSH-Px, MQAE and GABAA suggested Baicalin plays an antioxidant role in chick embryos possibly through suppression of outwardly rectifying Cl(−) in the high-glucose microenvironment. In addition, hyperglycemia-enhanced autophagy fell in the presence of Baicalin, through affecting the ubiquitin of p62 and accelerating autophagy flux. Both Baicalin and Vitamin C could decrease apoptosis, but CQ did not, suggesting autophagy to be a protective function on the cell survival. In mice, Baicalin reduced the elevated blood glucose level caused by streptozotocin (STZ). Taken together, these data suggest that hyperglycemia-induced embryonic cardiovascular malformation can be attenuated by Baicalin administration through suppressing the excessive production of ROS and autophagy. Baicalin could be a potential candidate drug for women suffering from gestational diabetes mellitus.
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Savage K, Firth J, Stough C, Sarris J. GABA-modulating phytomedicines for anxiety: A systematic review of preclinical and clinical evidence. Phytother Res 2017; 32:3-18. [DOI: 10.1002/ptr.5940] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Revised: 09/07/2017] [Accepted: 09/07/2017] [Indexed: 01/04/2023]
Affiliation(s)
- Karen Savage
- ARCADIA Mental Health Research Group, Professorial Unit, The Melbourne Clinic, Department of Psychiatry; The University of Melbourne; 2 Salisbury Street Richmond Victoria 3121 Australia
- Centre for Human Psychopharmacology; Swinburne University of Technology; John St Hawthorn Victoria 3122 Australia
| | - Joseph Firth
- Division of Psychology and Mental Health; University of Manchester; Oxford Rd Manchester M13 9PL UK
- NICM, School of Science and Health; Western Sydney University; Sydney NSW Australia
| | - Con Stough
- Centre for Human Psychopharmacology; Swinburne University of Technology; John St Hawthorn Victoria 3122 Australia
| | - Jerome Sarris
- ARCADIA Mental Health Research Group, Professorial Unit, The Melbourne Clinic, Department of Psychiatry; The University of Melbourne; 2 Salisbury Street Richmond Victoria 3121 Australia
- NICM, School of Science and Health; Western Sydney University; Sydney NSW Australia
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28
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Garlet QI, Pires LDC, Milanesi LH, Marafiga JR, Baldisserotto B, Mello CF, Heinzmann BM. (+)-Dehydrofukinone modulates membrane potential and delays seizure onset by GABAa receptor-mediated mechanism in mice. Toxicol Appl Pharmacol 2017; 332:52-63. [PMID: 28733205 DOI: 10.1016/j.taap.2017.07.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 07/03/2017] [Accepted: 07/17/2017] [Indexed: 12/19/2022]
Abstract
(+)-Dehydrofukinone (DHF), isolated from Nectandra grandiflora (Lauraceae) essential oil, induces sedation and anesthesia by modulation of GABAa receptors. However, no study has addressed whether DHF modulates other cellular events involved in the control of cellular excitability, such as seizure behavior. Therefore, the aim of the present study was to investigate the effect of DHF on cellular excitability and seizure behavior in mice. For this purpose, we used isolated nerve terminals (synaptosomes) to examine the effect of DHF on the plasma membrane potential, the involvement of GABAa receptors and the downstream activation of Ca2+ mobilization. Finally, we performed an in vivo assay in order to verify whether DHF could impact on seizures induced by pentylenetetrazole (PTZ) in mice. The results showed that DHF induced a GABA-dependent sustained hyperpolarization, sensitive to flumazenil and absent in low-[Cl-] medium. Additionally, (1-100μM) DHF decreased KCl-evoked calcium mobilization over time in a concentration-dependent manner and this effect was prevented by flumazenil. DHF increased the latency to myoclonic jerks (10mg/kg), delayed the onset of generalized tonic-clonic seizures (10, 30 and 100mg/kg), and these effects were also blocked by the pretreatment with flumazenil. Our data indicate that DHF has anticonvulsant properties and the molecular target underlying this effect is likely to be the facilitation of GABAergic neuronal inhibition. The present study highlights the therapeutic potential of the natural compound DHF as a suppressor of neuronal excitability.
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Affiliation(s)
- Quelen Iane Garlet
- Post-Graduation Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Luana da Costa Pires
- Post-Graduation Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Laura Hautrive Milanesi
- Post-Graduation Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Joseane Righes Marafiga
- Post-Graduation Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Bernardo Baldisserotto
- Post-Graduation Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Carlos Fernando Mello
- Post-Graduation Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil
| | - Berta Maria Heinzmann
- Post-Graduation Program in Pharmacology, Federal University of Santa Maria, Santa Maria, RS, Brazil.
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Fong SYK, Li C, Ho YC, Li R, Wang Q, Wong YC, Xue H, Zuo Z. Brain Uptake of Bioactive Flavones in Scutellariae Radix and Its Relationship to Anxiolytic Effect in Mice. Mol Pharm 2017; 14:2908-2916. [PMID: 28426226 DOI: 10.1021/acs.molpharmaceut.7b00029] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Scutellariae Radix (SR) and its bioactive flavones elicit a variety of effects in the brain. However, the brain uptake of individual SR flavones and its relationship to the elicited effects after SR administration remain unknown. Moreover, previous studies seldom measured pharmacokinetic and pharmacodynamic outcomes simultaneously. In the current study, the brain uptake of six major SR flavones and the anxiolytic behavior following oral administration of a SR extract at two clinically relevant doses (600 and 1200 mg/kg twice daily) were simultaneously investigated in mice (n = 18 per group). Brain and plasma concentrations of the flavones were measured by LC-MS/MS, while the anxiolytic effect was evaluated using the elevated plus maze. To further investigate the mechanism behind the differential brain uptake of the six SR flavones, these flavones were separately administered to mice at an equivalent molar oral dose (n = 6). The brain tissue bindings of the SR flavones were also measured with the in vitro brain slice method. Our results indicated that all six SR flavones including three aglycons (baicalein, wogonin, and oroxylin A) and three glucuronides (baicalin, wogonoside, and oroxyloside) could pass through the blood-brain barrier, with brain concentrations ranging from 7.9 to 224.0 pmol/g. It provided novel evidence that oroxylin A had the highest brain uptake among the six SR flavones regardless of its limited content in SR extract, in which 3.6-3.9% of the administered oroxylin A dose was present in the brain 6 h postdosing and with a brain-to-plasma ratio of 0.42-0.46. Although SR extract contains flavones that are positive modulators of the benzodiazepine binding site of GABAA receptors (baicalein, wogonin, and baicalin), our behavioral study for the first time indicated that SR extract (a mixture of six flavones) did not elicit significant anxiolytic effect at the studied doses. Oroxylin A also demonstrated the highest brain uptake when the six flavones were separately administered to mice, and the highest affinity to brain tissues in the in vitro tissue binding assay. The high brain uptake of oroxylin A, a GABAA antagonist which had been reported to antagonize diazepam-induced anxiolytic effect, might have suppressed the anxiolytic effects of the other flavones and account for the lack of overall anxiolytic effect of SR extract. The current study illustrates the importance of monitoring pharmacokinetics in a behavioral study, particularly for herbal medicines which consist of multiple components that might have different or even opposite pharmacological effects on the same target.
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Affiliation(s)
- Sophia Yui Kau Fong
- School of Pharmacy, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong
| | - Chenrui Li
- School of Pharmacy, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong.,Key Laboratory for Space Bioscience and Biotechnology, School of Life Sciences, Northwestern Polytechnical University , Xi'an, Shaanxi, P. R. China
| | - Yiu Cheong Ho
- Division of Life Science and Applied Genomics Center, The Hong Kong University of Science and Technology , Hong Kong
| | - Rui Li
- Division of Life Science and Applied Genomics Center, The Hong Kong University of Science and Technology , Hong Kong
| | - Qian Wang
- School of Pharmacy, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong
| | - Yin Cheong Wong
- School of Pharmacy, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong
| | - Hong Xue
- Division of Life Science and Applied Genomics Center, The Hong Kong University of Science and Technology , Hong Kong
| | - Zhong Zuo
- School of Pharmacy, The Chinese University of Hong Kong , Shatin, New Territories, Hong Kong
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Antiaging and Anxiolytic Effects of Combinatory Formulas Based on Four Medicinal Herbs. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:4624069. [PMID: 28458714 PMCID: PMC5387814 DOI: 10.1155/2017/4624069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2016] [Revised: 01/26/2017] [Accepted: 02/19/2017] [Indexed: 02/04/2023]
Abstract
The objective of the present study was to search for medicinal-herb combinations based on Radix Bupleurum chinense DC (“B”), Rhizoma Corydalis yanhusuo WT Wang (“Y”), Caulis Polygonum multiflorum Thunb (“P”), and Flos Albizia julibrissin Durazz (“A”) for antiaging, anxiolytic, and sedative effects. Application of the D-galactose induced accelerated-aging model employing male ICR mice showed that oral administration of some combinations of B, Y, P, and A significantly improved spatial memory in Y-maze test and reduced brain levels of tumor necrosis factor-α and interleukin-6 based on immunoassays and oxidative stress marker malondialdehyde, based on the thiobarbituric acid test, and the loss of whiskers, indicating antiaging and antineurodegeneration effects. In addition, some of the combinatory formulas induced anxiolysis measured using the elevated plus-maze test and/or sedative effects measured using the hole-board test. Over the range of dosages examined, all possible combinations of the four herbs were devoid of any significant side effects in the form of altered locomotor activity, decreased muscle coordination, or anterograde amnesia assessed using the photobeam and rotarod and step-through passive avoidance methods, respectively. The results suggest that various combinations of the B, Y, P, and A herbs could be useful as nonsedative, antiaging and/or antineurodegenerative agents, or anxiolytic agents.
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Yin H, Bhattarai JP, Oh SM, Park SJ, Ahn DK, Han SK. Baicalin Activates Glycine and γ-Aminobutyric Acid Receptors on Substantia Gelatinosa Neurons of the Trigeminal Subsnucleus Caudalis in Juvenile Mice. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2016; 44:389-400. [PMID: 27080947 DOI: 10.1142/s0192415x16500221] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The substantia gelatinosa (SG) of the trigeminal subnucleus caudalis (Vc) receives nociceptive afferent inputs from thin-myelinated A[Formula: see text] fibers and unmyelinated C fibers and has been shown to be involved in the processing of orofacial nociceptive information. Scutellaria baicalensis Georgi (Huang-Qin, SbG), one of the 50 fundamental herbs of Chinese herbology, has been used historically as anti-inflammatory and antineoplastic medicine. Baicalin, one of the major compounds of SbG, has been reported to have neuroprotective, anti-inflammatory and analgesic effects. However, the receptor type activated by baicalin and its precise action mechanism on the SG neurons of Vc have not yet been studied. The whole-cell patch clamp technique was performed to examine the ion channels activated by baicalin on the SG neurons of Vc. In high Cl[Formula: see text] pipette solution, the baicalin (300[Formula: see text][Formula: see text]M) induced repeatable inward currents ([Formula: see text][Formula: see text]pA, [Formula: see text]) without desensitization on all the SG neurons tested. Further, the inward currents showed a concentration (0.1-3[Formula: see text]mM) dependent pattern. The inward current was sustained in the presence of tetrodotoxin (0.5[Formula: see text][Formula: see text]M), a voltage sensitive Na[Formula: see text] channel blocker. In addition, baicalin-induced inward currents were reduced in the presence of picrotoxin (50[Formula: see text][Formula: see text]M), a GABAA receptor antagonist, flumazenil (100[Formula: see text][Formula: see text]M), a benzodiazepine-sensitive GABAA receptor antagonist, and strychnine (2[Formula: see text][Formula: see text]M), a glycine receptor antagonist, respectively. These results indicate that baicalin has inhibitory effects on the SG neurons of the Vc, which are due to the activation of GABAA and/or the glycine receptor. Our results suggest that baicalin may be a potential target for orofacial pain modulation.
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Affiliation(s)
- Hua Yin
- * Department of Oral Physiology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju 561-756, Republic of Korea
| | - Janardhan Prasad Bhattarai
- * Department of Oral Physiology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju 561-756, Republic of Korea
| | - Sun Mi Oh
- * Department of Oral Physiology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju 561-756, Republic of Korea
| | - Soo Joung Park
- * Department of Oral Physiology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju 561-756, Republic of Korea
| | - Dong Kuk Ahn
- † Department of Oral Physiology, School of Dentistry, Kyungpook National University, Daegu, South Korea
| | - Seong Kyu Han
- * Department of Oral Physiology, School of Dentistry and Institute of Oral Bioscience, Chonbuk National University, Jeonju 561-756, Republic of Korea
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Zhou R, Han X, Wang J, Sun J. Baicalin may have a therapeutic effect in attention deficit hyperactivity disorder. Med Hypotheses 2016; 85:761-4. [PMID: 26604025 DOI: 10.1016/j.mehy.2015.10.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2015] [Revised: 09/29/2015] [Accepted: 10/11/2015] [Indexed: 11/19/2022]
Abstract
Baicalin is a flavonoid purified from Scutellaria baicalensis Georgi. It possesses a variety of pharmacological properties, such as anti-inflammatory, antioxidant, antiapoptotic, and neuro-protective properties, and provides protection against cerebral hemorrhage. However, it is seldom considered a therapeutic in mental disorders. Recent studies showed that baicalin protects cerebral functions against ischemia and has sedative and anxiolytic-like effects. Animal experiments showed that it protects dopaminergic neurons in the striatum, hippocampus and substantia nigra. It also has effects such as anti-depressive and anti-epileptic and offers resistance to Parkinson's disease. Attention deficit hyperactivity disorder (ADHD) pathogenesis is closely related to dopamine deficiency. However, the therapeutic effect of baicalin in ADHD has not been studied. We hypothesize that baicalin may protect dopaminergic neurons and increase brain dopamine levels, thus serving as an effective novel treatment for ADHD.
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Effects of standardized Ginkgo biloba extract on the acquisition, retrieval and extinction of conditioned suppression: Evidence that short-term memory and long-term memory are differentially modulated. Physiol Behav 2016; 165:55-68. [PMID: 27378507 DOI: 10.1016/j.physbeh.2016.06.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2016] [Revised: 05/28/2016] [Accepted: 06/29/2016] [Indexed: 01/01/2023]
Abstract
Studies in our laboratory have characterized the putative neuromodulatory effects of a standardized extract of the green leaves of Ginkgo biloba (EGb), which comprises a formulation of 24% ginkgo-flavoglycosides and 6% ginkgo-terpenoid lactones, on conditioned suppression. This model comprises a suitable animal model for investigating the behavioral changes and pharmacological mechanisms that underlie fear memory and anxiety. The characterization of the effects on distinct stages of fear memory or fear extinction will help illustrate both the beneficial and harmful effects. Three hundred adult male Wistar rats were randomly assigned to 30 groups according to the treatment as follows: i-ii) control groups (CS-US and CSno-US); iii) vehicle group (12% Tween®80); and iv-vi) EGb groups (250, 500 and 1000mgkg(-1)); or experimental procedures designed to assess the effects of EGb treatment prior to the acquisition (n=20 per group) and retrieval of conditioned fear (n=10 per group) or prior to the extinction training (n=10 per group) and extinction retention test (n=10 per group). Furthermore, to better understand the effects of acute EGb treatment on fear memory, we conducted two additional analyses: the acquisition of within- and between-session extinction of fear memory (short- and long-term memory, respectively). No difference was identified between the control and treatment groups during the retention test (P>0.05), with the exception of the CSno-US group in relation to all groups (P<0.05). A between-session analysis indicated that EGb at 250mgkg(-1) facilitated the acquisition of extinction fear memory, which was verified by the suppression ration in the first trial of extinction training (SR=0.39) and the extinction retention test session (SR=0.53, P<0.05), without impairments in fear memory acquisition, which were evaluated during the retention test (SR=0.79). Moreover, EGb administered at 1000mgkg(-1) prior to conditioning did not enhance the long-term extinction memory, i.e., it did not prevent the return of extinguished fear memory in the extinction retention test, in which the spontaneous recovery of fear was demonstrated (SR=0.63, P<0.05); however, it significantly facilitated short-term memory as verified by data from the within-session extinction (1 to 8-10 trials) during the retention test (SR=0.73 to SR=0.59; P<0.05) and the extinction retention test (SR=0.63 to SR=0.41; P<0.05). Moreover, spontaneous recovery was identified in response to a higher dose of EGb when administered prior to extinction training (SR=0.75, P<0.05) and the extinction retention test (SR=0.70; P<0.05). At dose of 500mgkg(-1) EGb reduced the suppression ratio when administered prior to the retention test (SR=0.57) and extinction training (SR=0.55; P<0.05) without preventing the acquisition of fear memory, which suggests that EGb has anti-anxiety effects. Taken together, the current findings suggest that EGb differentially modulates short- and long-term memory, as well as anxiety-like behavior. The actions of EGb may provide information regarding the beneficial effects in the prevention and treatment of neurocognitive impairments and anxiety disorders. Additional analyses are necessary to facilitate an understanding of these effects; however, previous data from our group suggest that GABAergic, serotoninergic and glutamatergic receptors are potential targets of the effects of EGb on conditioned suppression.
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de Oliveira DR, Zamberlam CR, Rêgo GM, Cavalheiro A, Cerutti JM, Cerutti SM. Effects of a Flavonoid-Rich Fraction on the Acquisition and Extinction of Fear Memory: Pharmacological and Molecular Approaches. Front Behav Neurosci 2016; 9:345. [PMID: 26778988 PMCID: PMC4700274 DOI: 10.3389/fnbeh.2015.00345] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 11/23/2015] [Indexed: 11/13/2022] Open
Abstract
The effects of flavonoids have been correlated with their ability to modulate the glutamatergic, serotoninergic, and GABAergic neurotransmission; the major targets of these substances are N-methyl-D-aspartic acid receptor (NMDARs), serotonin type1A receptor (5-HT1ARs), and the gamma-aminobutyric acid type A receptors (GABAARs). Several studies showed that these receptors are involved in the acquisition and extinction of fear memory. This study assessed the effects of treatment prior to conditioning with a flavonoid-rich fraction from the stem bark of Erythrina falcata (FfB) on the acquisition and extinction of the conditioned suppression following pharmacological manipulations and on gene expression in the dorsal hippocampus (DH). Adult male Wistar rats were treated before conditioned fear with FfB, vehicle, an agonist or antagonist of the 5-HT1AR, GABAARs or the GluN2B-NMDAR or one of these antagonists before FfB treatment. The effects of these treatments on fear memory retrieval, extinction training and extinction retrieval were evaluated at 48, 72, and 98 h after conditioning, respectively. We found that activation of GABAARs and inactivation of GluN2B-NMDARs play important roles in the acquisition of lick response suppression. FfB reversed the effect of blocking GluN2B-NMDARs on the conditioned fear and induced the spontaneous recovery. Blocking the 5-HT1AR and the GluN2B-NMDAR before FfB treatment seemed to be associated with weakening of the spontaneous recovery. Expression of analysis of DH samples via qPCR showed that FfB treatment resulted in the overexpression of Htr1a, Grin2a, Gabra5, and Erk2 after the retention test and of Htr1a and Erk2 after the extinction retention test. Moreover, blocking the 5-HT1ARs and the GluN2B-NMDARs before FfB treatment resulted in reduced Htr1a and Grin2b expression after the retention test, but played a distinct role in Grin2a and Erk2 expression, according session evaluated. We show for the first time that the serotoninergic and glutamatergic receptors are important targets for the effect of FfB on the conditioned fear and spontaneous recovery, in which the ERK signaling pathway appears to be modulated. Further, these results provide important information regarding the role of the DH in conditioned suppression. Taken together, our data suggest that FfB represents a potential therapy for preventing or treating memory impairments.
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Affiliation(s)
- Daniela R de Oliveira
- Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de São PauloSão Paulo, Brazil; Genetic Bases of Thyroid Tumor Laboratory, Division of Genetics, Department of Morphology and Genetics, Universidade Federal de São PauloSão Paulo, Brazil
| | - Claudia R Zamberlam
- Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de São PauloSão Paulo, Brazil; Genetic Bases of Thyroid Tumor Laboratory, Division of Genetics, Department of Morphology and Genetics, Universidade Federal de São PauloSão Paulo, Brazil
| | - Gizelda M Rêgo
- Department of Forestry Colombo, Brazilian Agricultural Research Corporation Colombo, Brazil
| | - Alberto Cavalheiro
- Institute of Chemistry, Nuclei of Bioassay, Biosynthesis and Ecophysiology of Natural Products, São Paulo State University, Universidade Estadual Paulista Araraquara, Brazil
| | - Janete M Cerutti
- Genetic Bases of Thyroid Tumor Laboratory, Division of Genetics, Department of Morphology and Genetics, Universidade Federal de São Paulo São Paulo, Brazil
| | - Suzete M Cerutti
- Cellular and Behavioral Pharmacology Laboratory, Department of Biological Science, Universidade Federal de São Paulo São Paulo, Brazil
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Sucher NJ, Carles MC. A pharmacological basis of herbal medicines for epilepsy. Epilepsy Behav 2015; 52:308-18. [PMID: 26074183 DOI: 10.1016/j.yebeh.2015.05.012] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 05/06/2015] [Indexed: 01/25/2023]
Abstract
Epilepsy is the most common chronic neurological disease, affecting about 1% of the world's population during their lifetime. Most people with epilepsy can attain a seizure-free life upon treatment with antiepileptic drugs (AEDs). Unfortunately, seizures in up to 30% do not respond to treatment. It is estimated that 90% of people with epilepsy live in developing countries, and most of them receive no drug treatment for the disease. This treatment gap has motivated investigations into the effects of plants that have been used by traditional healers all over the world to treat seizures. Extracts of hundreds of plants have been shown to exhibit anticonvulsant activity in phenotypic screens performed in experimental animals. Some of those extracts appear to exhibit anticonvulsant efficacy similar to that of synthetic AEDs. Dozens of plant-derived chemical compounds have similarly been shown to act as anticonvulsants in various in vivo and in vitro assays. To a significant degree, anticonvulsant effects of plant extracts can be attributed to widely distributed flavonoids, (furano)coumarins, phenylpropanoids, and terpenoids. Flavonoids and coumarins have been shown to interact with the benzodiazepine site of the GABAA receptor and various voltage-gated ion channels, which are targets of synthetic AEDs. Modulation of the activity of ligand-gated and voltage-gated ion channels provides an explanatory basis of the anticonvulsant effects of plant secondary metabolites. Many complex extracts and single plant-derived compounds exhibit antiinflammatory, neuroprotective, and cognition-enhancing activities that may be beneficial in the treatment of epilepsy. Thus, botanicals provide a base for target-oriented antiepileptic drug discovery and development. In the future, preclinical work should focus on the characterization of the effects of plant extracts and plant-derived compounds on well-defined targets rather than on phenotypic screening using in vivo animal models of acute seizures. At the same time, available data provide ample justification for clinical studies with selected standardized botanical extracts and plant-derived compounds. This article is part of a Special Issue entitled "Botanicals for Epilepsy".
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Affiliation(s)
- Nikolaus J Sucher
- Science Department, Roxbury Community College, MA, USA; FLAS, Northern Essex Community College, MA, USA; Biology Department, Salem State University, MA, USA.
| | - Maria C Carles
- Science Department, Roxbury Community College, MA, USA; FLAS, Northern Essex Community College, MA, USA; Biology Department, Salem State University, MA, USA
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Xiao F, Yan B, Chen L, Zhou D. Review of the use of botanicals for epilepsy in complementary medical systems--Traditional Chinese Medicine. Epilepsy Behav 2015; 52:281-9. [PMID: 26052078 DOI: 10.1016/j.yebeh.2015.04.050] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Revised: 04/19/2015] [Accepted: 04/20/2015] [Indexed: 02/05/2023]
Abstract
In traditional Chinese medicine, botanical remedies have been used for centuries to treat seizures. This review aimed to summarize the botanicals that have been used in traditional Chinese medicine to treat epilepsy. We searched Chinese online databases to determine the botanicals used for epilepsy in traditional Chinese medicine and identified articles using a preset search syntax and inclusion criteria of each botanical in the PubMed database to explore their potential mechanisms. Twenty-three botanicals were identified to treat epilepsy in traditional Chinese medicine. The pharmacological mechanisms of each botanical related to antiepileptic activity, which were mainly examined in animal models, were reviewed. We discuss the use and current trends of botanical treatments in China and highlight the limitations of botanical epilepsy treatments. A substantial number of these types of botanicals would be good candidates for the development of novel AEDs. More rigorous clinical trials of botanicals in traditional Chinese medicine for epilepsy treatment are encouraged in the future. This article is part of a Special Issue entitled "Botanicals for Epilepsy".
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Affiliation(s)
- Fenglai Xiao
- Department of Neurology, West China Hospital, Sichuan University, 610041 Chengdu, People's Republic of China
| | - Bo Yan
- Department of Neurology, West China Hospital, Sichuan University, 610041 Chengdu, People's Republic of China
| | - Lei Chen
- Department of Neurology, West China Hospital, Sichuan University, 610041 Chengdu, People's Republic of China
| | - Dong Zhou
- Department of Neurology, West China Hospital, Sichuan University, 610041 Chengdu, People's Republic of China.
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The role of flavonoids on oxidative stress in epilepsy. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:171756. [PMID: 25653736 PMCID: PMC4306219 DOI: 10.1155/2015/171756] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 12/11/2014] [Indexed: 11/18/2022]
Abstract
Backgrounds. Oxidative stress can result from excessive free-radical production and it is likely implicated as a possible mechanism involved in the initiation and progression of epileptogenesis. Flavonoids can protect the brain from oxidative stress. In the central nervous system (CNS) several flavonoids bind to the benzodiazepine site on the GABAA-receptor resulting in anticonvulsive effects. Objective. This review provides an overview about the role of flavonoids in oxidative stress in epilepsy. The mechanism of action of flavonoids and its relation to the chemical structure is also discussed. Results/Conclusions. There is evidence that suggests that flavonoids have potential for neuroprotection in epilepsy.
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Yun J, Jung YS. A Scutellaria baicalensis radix water extract inhibits morphine-induced conditioned place preference. PHARMACEUTICAL BIOLOGY 2014; 52:1382-1387. [PMID: 25068674 DOI: 10.3109/13880209.2014.892514] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
CONTEXT Scutellaria baicalensis Georgi (Lamiaceae) has been used as a traditional herbal preparation for the treatment of neuropsychiatric disorders in Asian countries for centuries. OBJECTIVE To evaluate the effects of S. baicalensis on morphine-induced drug dependence in rats. MATERIALS AND METHODS In order to evaluate the effect of S. baicalensis and baicalin on morphine-induced dependence-like behavior, a water extract of S. baicalensis [500 mg/kg, intraperitoneally (i.p.)] or baicalin (50 mg/kg, i.p., a flavonoid found in S. baicalensis) was administered prior to morphine injection [5 and 2.5 mg/kg, respectively, subcutaneously (s.c.)] to rats for 8 and 4 d, respectively. Morphine-induced conditioned place preference was assessed by measuring the time spent in a drug-paired chamber. The effect of S. baicalensis on dopamine receptor supersensitivity (locomotor activity) and dopamine agonist-induced climbing behavior due to a single apomorphine treatment (2 mg/kg, s.c.) was also measured. RESULTS At 50 mg/kg, a water extract of S. baicalensis decreased morphine (5 mg/kg)-induced conditioned place preference by 86% in rats. Apomorphine (2 mg/kg)-induced locomotor activity (dopamine receptor supersensitivity) in rats and climbing behavior in mice were attenuated after pretreatment with 500 mg/kg of S. baicalensis water extract by 41% and 56%, respectively. In addition, baicalin-reduced morphine-induced conditioned places preference by 86% in rats at 50 mg/kg. DISCUSSION AND CONCLUSION These results suggest that S. baicalensis can ameliorate drug addiction-related behavior through functional regulation of dopamine receptors.
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Affiliation(s)
- Jaesuk Yun
- Pharmaceutical Standardization Research and Testing Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety , Busan , Republic of Korea and
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Costa JP, de Oliveira GAL, de Almeida AAC, Islam M, de Sousa DP, de Freitas RM. Anxiolytic-like effects of phytol: Possible involvement of GABAergic transmission. Brain Res 2014; 1547:34-42. [DOI: 10.1016/j.brainres.2013.12.003] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 11/05/2013] [Accepted: 12/03/2013] [Indexed: 12/15/2022]
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Involvement of the GABAergic system in the anxiolytic-like effect of the flavonoid ellagic acid in mice. Eur J Pharmacol 2013; 710:49-58. [DOI: 10.1016/j.ejphar.2013.04.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2012] [Revised: 03/30/2013] [Accepted: 04/03/2013] [Indexed: 11/20/2022]
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Liu YF, Gao F, Li XW, Jia RH, Meng XD, Zhao R, Jing YY, Wang Y, Jiang W. The Anticonvulsant and Neuroprotective Effects of Baicalin on Pilocarpine-Induced Epileptic Model in Rats. Neurochem Res 2012; 37:1670-80. [DOI: 10.1007/s11064-012-0771-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 02/29/2012] [Accepted: 03/27/2012] [Indexed: 12/27/2022]
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Abstract
Benzodiazepines are the most widely prescribed class of psychoactive drugs in current therapeutic use, despite the important unwanted side effects that they produce, such as sedation, myorelaxation, ataxia, amnesia, and ethanol and barbiturate potentiation and tolerance. They exert their therapeutic effects via binding to the benzodiazepine binding site of gamma-aminobutyric acid (GABA) type A receptors, and allosterically modulating the chloride flux through the ion channel complex. First isolated from plants used as tranquilizers in folkloric medicine, some natural flavonoids have been shown to possess selective affinity for the benzodiazepine binding site with a broad spectrum of central nervous system effects. Since the initial search for alternative benzodiazepine ligands amongst the flavonoids, a list of successful synthetic derivatives has been generated with enhanced activities. This review provides an update on research developments that have established the activity of natural and synthetic flavonoids on GABA type A receptors. Flavonoids are prominent drugs in the treatment of mental disorders, and can also be used as tools to study modulatory sites at GABA type A receptors and to develop GABA type A selective agents further.
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Affiliation(s)
- Cristina Wasowski
- Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mariel Marder
- Instituto de Química y Fisicoquímica Biológicas, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina
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Ren L, Chan WM, Wang F, Xu Z, Zhao C, Mat WK, Chai Y, Wong JTF, Tsang SY, Xue H. Effects of flavone 6-substitutions on GABAA receptors efficacy. Eur J Pharmacol 2011; 670:121-9. [DOI: 10.1016/j.ejphar.2011.08.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2011] [Revised: 08/01/2011] [Accepted: 08/24/2011] [Indexed: 12/01/2022]
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Gong SQ, Sun W, Wang M, Fu YY. Role of TLR4 and TCR or BCR against baicalin-induced responses in T and B cells. Int Immunopharmacol 2011; 11:2176-80. [PMID: 22001396 DOI: 10.1016/j.intimp.2011.09.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2011] [Revised: 09/25/2011] [Accepted: 09/26/2011] [Indexed: 10/16/2022]
Abstract
Baicalin (BA), a flavonoid compound isolated from Scutellaria baicalensis, has been shown to possess a number of pharmacological effects including antiviral, anti-inflammatory, antioxidant and immune regulation. Here, we examined its effects on human T and B cells proliferation by MTT assay and found that BA stimulated T and B cells proliferation, independently and cooperatively with Con-A (T cells) or LPS (B cells). Then, we analyzed the effects of BA treatment on the mRNA expression of Toll-like receptors (TLRs), IL-2, IFN-γ and IL-12 in T and B cells by real-time RT-PCR and attempted to observe whether blocking TLR4 had influence on mRNA expression. We found that BA treatment significantly up-regulated TLR3, 7, 8 and 9 mRNA expressions in T and B cells, IL-2 and IFN-γ in T cells and IL-12 in B cells. The increased mRNA expressions were suppressed after blocking TLR4. We further analyzed the effects of BA treatment on TCR vβ and CD79 mRNA expression levels in T and B cells and explored whether blocking TCR (αβ) or BCR mIgM F(ab')(2) had an influence on mRNA expression. We found that BA treatment significantly improved TCR vβ and CD79 mRNA expression in T and B cells, respectively, and the improvements were all inhibited after blocking TCR (αβ) or BCR mIgM F(ab')(2). Our results suggested that BA participates in innate and adaptive immune regulation by up-regulating the mRNA expression of TLRs (3, 7, 8 and 9), IL-2, IFN-γ and IL-12 in T and B cells, which is mediated by TLR4, and by improving the mRNA expression of TCR vβ and CD79, which is mediated by TCR (αβ) and BCR mIgM, respectively. Therefore, TLR4, TCR (αβ) and BCR mIgM are all the immune receptors for BA on T and B cells.
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Affiliation(s)
- Shu-Qi Gong
- Department of Immunology, medical college of NanChang University, Ba-yi road, No. 461. NanChang city 330006, JiangXi province, China
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de Carvalho RSM, Duarte FS, de Lima TCM. Involvement of GABAergic non-benzodiazepine sites in the anxiolytic-like and sedative effects of the flavonoid baicalein in mice. Behav Brain Res 2011; 221:75-82. [DOI: 10.1016/j.bbr.2011.02.038] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2010] [Revised: 02/12/2011] [Accepted: 02/26/2011] [Indexed: 01/28/2023]
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Chang HH, Yi PL, Cheng CH, Lu CY, Hsiao YT, Tsai YF, Li CL, Chang FC. Biphasic effects of baicalin, an active constituent of Scutellaria baicalensis Georgi, in the spontaneous sleep-wake regulation. JOURNAL OF ETHNOPHARMACOLOGY 2011; 135:359-368. [PMID: 21419210 DOI: 10.1016/j.jep.2011.03.023] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Revised: 03/07/2011] [Accepted: 03/09/2011] [Indexed: 05/30/2023]
Abstract
AIM OF THE STUDY Baicalin is an active compound originating from the root of Scutellaria baicalensis Georgi, which has been used for anti-inflammation, anti-bacteria, anti-hypertension, anti-allergy and sedation since ancient China, though the neuronal mechanisms involved in the sedative effect is still unclear. Baicalin possesses the ability to decrease the expression of pro-inflammatory cytokines and nuclear factor (NF)-κB activity. Furthermore, baicalin has demonstrated an anxiolytic-like effect via activation of γ-aminobutyric acid-A (GABA(A)) receptors. Pro-inflammatory cytokines (e.g. interleukin (IL)-1, IL-6, and tumor necrosis factor (TNF)-α) and the GABAergic system promote sleep. This study was designed to determine whether the GABA(A) receptor activation and/or the suppression of pro-inflammatory cytokines mediate(s) baicalin-induced sleep alterations. MATERIALS AND METHODS Baicalin was intracerebroventricularly (ICV) administered 20 min either prior to the beginning of the light period or before the onset of the dark period. Electroencephalogram (EEG) and gross body movement were acquired for sleep analysis. Pharmacological blockade of IL-1 and GABA(A) receptors were employed to elucidate the involvements of IL-1 and GABA(A) receptors in baicalin-induced sleep alterations. IL-1β concentrations obtained after baicalin administration in several distinct brain regions were determined by ELISA. RESULTS ICV administration of baicalin decreased slow wave sleep (SWS) during the first 2h of the light period. Rapid eye movement sleep (REMS) was not altered. The blockade of IL-1β-induced SWS enhancement by baicalin suggests that the antagonism of IL-1 receptors is involved in baicalin-induced SWS decrement during the light period. However, IL-1β concentrations during the light period were not altered after baicalin administration. In contrast, baicalin increased both SWS and REMS during hours 8-10 of the dark (active) period when baicalin was administered at the beginning of the dark period, and its effects were blocked by the GABA(A) receptor antagonist bicuculline. CONCLUSION Baicalin exhibits biphasic effects on sleep-wake regulation; the decrease of SWS during the light period and increases of SWS and REMS during the dark period. Inhibition of IL-1 action and enhancement of GABA(A) receptor activity may mediate baicalin's effects during the light and dark period, respectively.
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Affiliation(s)
- Han-Han Chang
- Department of Veterinary Medicine, School of Veterinary Medicine, National Taiwan University, Taipei, Taiwan
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Yang X, Baburin I, Plitzko I, Hering S, Hamburger M. HPLC-based activity profiling for GABAA receptor modulators from the traditional Chinese herbal drug Kushen (Sophora flavescens root). Mol Divers 2011; 15:361-72. [PMID: 21207144 DOI: 10.1007/s11030-010-9297-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Accepted: 12/08/2010] [Indexed: 12/16/2022]
Abstract
An EtOAc extract from the roots of Sophora flavescens (Kushen) potentiated γ-aminobutyric acid (GABA)-induced chloride influx in Xenopus oocytes transiently expressing GABA(A) receptors with subunit composition, α (1) β (2) γ (2S). HPLC-based activity profiling of the extract led to the identification of 8-lavandulyl flavonoids, kushenol I, sophoraflavanone G, (-)-kurarinone, and kuraridine as GABA(A) receptor modulators. In addition, a series of inactive structurally related flavonoids were characterized. Among these, kushenol Y (4) was identified as a new natural product. The 8-lavandulyl flavonoids are first representatives of a novel scaffold for the target.
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Affiliation(s)
- Xinzhou Yang
- Institute of Pharmaceutical Biology, University of Basel, Klingelbergstrasse 50, 4056, Basel, Switzerland
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Li M, Tsang KS, Choi ST, Li K, Shaw PC, Lau KF. Neuronal differentiation of C17.2 neural stem cells induced by a natural flavonoid, baicalin. Chembiochem 2011; 12:449-56. [PMID: 21290546 DOI: 10.1002/cbic.201000570] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2010] [Indexed: 11/08/2022]
Abstract
Natural medicinal materials are a significant resource for the identification of compounds with specific biological properties. In this study, we employed multipotent C17.2 neural stem cells as a model for screening natural compounds that possess neural differentiation-inducing properties. We show here for the first time that, out of the 67 compounds tested, the flavonoid baicalin is a potent differentiation-inducing agent. Baicalin increased the number of cells bearing extended neurites and the expression levels of a number of neuronal markers. Importantly, baicalin promoted the expression of several key neurogenic transcriptional factors. Moreover, we demonstrated that baicalin enhanced the phosphorylation/activation of Erk1/2. Inhibition of Erk1/2 activation by the MEK inhibitor U0126 attenuated the neuronal differentiation-inducing effect of baicalin. Taken together, our findings suggest that baicalin induces neuronal differentiation of C17.2 neural stem cells and that this is mediated by activation of Erk1/2. Our work lays the foundation for exploring baicalin for the promotion of neural regeneration after injury or disease.
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Affiliation(s)
- Ming Li
- Department of Biochemistry, The Chinese University of Hong Kong, Shatin, N.T. Hong Kong, P.R. China
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Nutt DJ, Stahl SM. Searching for perfect sleep: the continuing evolution of GABAA receptor modulators as hypnotics. J Psychopharmacol 2010; 24:1601-12. [PMID: 19942638 DOI: 10.1177/0269881109106927] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The non-benzodiazepine GABA(A) receptor modulators ('Z-drugs') - zaleplon, zolpidem, zopiclone and eszopiclone - have become the accepted treatments for insomnia where they are available. However, recent randomized, placebo-controlled trials suggest that, for these drugs, there may be particular efficacy and tolerability profiles and distinct clinical outcomes in specific patient populations. This is particularly apparent when hypnotic/ selective serotonin reuptake inhibitor co-therapy is used to treat patients with co-morbid insomnia and psychiatric disorders, as patient recovery appears to be accelerated and enhanced by some drugs but not others. Emerging evidence of why this should be the case is that these hypnotic drugs may differ significantly from each other in their pharmacodynamic and pharmacokinetic profiles. Functional selectivity for specific GABA(A) receptor subtypes may determine each drug's clinical attributes, while the pharmacokinetic characteristics of Z-drugs also determine to a large extent how they perform in the clinic. For example, activity at GABA(A) alpha 1 receptor subtypes may be associated with sedative effects, whereas activity at alpha 2 and alpha 3 receptor subtypes may be associated with anxiolytic and antidepressant effects. In summary, the distinct clinical outcomes of zaleplon, zolpidem, zopiclone and eszopiclone may be explained by each drug's unique GABA(A) receptor subunit selectivity and pharmacokinetic profile. Further investigation of GABA( A) receptor subtype effects would help to increase understanding of current hypnotic drug effects, while knowledge of each drug's specific binding profile should enable clinicians to tailor treatment to individual patient's needs.
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Affiliation(s)
- David J Nutt
- Department of Neuropsychopharmacology and Molecular Imaging, Division of Neuroscience and Mental Health, Imperial College London, London, UK.
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Mismatch between changes in baicalein-induced memory-related biochemical parameters and behavioral consequences in mouse. Brain Res 2010; 1355:141-50. [PMID: 20691671 DOI: 10.1016/j.brainres.2010.07.098] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2010] [Revised: 07/18/2010] [Accepted: 07/29/2010] [Indexed: 11/22/2022]
Abstract
Baicalein is one of the major flavonoids originally isolated from the roots of Scutellaria baicalensis Georgi (Labiatae). Reports on baicalein-induced changes in memory-related biochemical parameters including extracellular signal-regulated kinases (ERK), Akt, cAMP response element-binding protein (CREB), and brain-derived neurotrophic factor (BDNF) have been scarce, and the action of baicalein is controversial. Baicalein promotes phosphorylation of ERK under normal conditions; on the other hand, it inhibits phosphorylation of ERK extracellularly under oxidative conditions. In the present study, we observed that baicalein (20mg/kg, p.o.) as compared to vehicle significantly increased the expression of phosphorylated ERK (pERK), phosphorylated CREB (pCREB), and BDNF but did not increase phosphorylated Akt expression in the hippocampus of naive mice. Baicalein also significantly increased the expression of pERK and BDNF in the cortex of naive mice. However, baicalein had no effect on memory acquisition in the step-through passive avoidance task. On the contrary, baicalein (20mg/kg, p.o.) co-injected with flumazenil (10mg/kg, i.p.) significantly increased the retention latency in the passive avoidance task in comparison to the flumazenil-treated group, baicalein-treated group, and vehicle-treated control group. In addition, the number of platform crossings in the Morris water maze test during the probe trial session was significantly increased by co-administration of baicalein with flumazenil. Furthermore, the expressions level of BDNF was significantly increased in the baicalein with flumazenil-treated group compared to the baicalein- or flumazenil-treated groups in the hippocampus after an acquisition trial. These results suggest that the reasons why baicalein does not exert cognitive enhancement although it enhances the expression levels of pERK, pCREB, and BDNF are, in part, derived from its GABA(A) receptor agonistic property which is antagonized by flumazenil.
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