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Lamba D, Dwivedi DK, Yadav M, Kumar Yr S. Boldine: a narrative review of the bioactive compound with versatile biological and pharmacological potential. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2024; 0:jcim-2023-0224. [PMID: 38234264 DOI: 10.1515/jcim-2023-0224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 01/03/2024] [Indexed: 01/19/2024]
Abstract
OBJECTIVE Boldine is a plant-derived bioactive compound that has a beneficial impact on human health. Boldine is an aporphine alkaloid mainly obtained from the leaves and bark of the Chilean Boldo tree (Peumus boldus, Family: Monimiaceae). There are plenty of preclinical evidence supports that boldine exerts its beneficial effects against various diseases. Lumiskin™, a patented and marketed formulation by Revitol Skincare for skin brightening, contains Dicetyl boldine, a boldine derivative. CONTENT All the available information on the Chilean boldo tree (P. boldus Molina) species was actualized by systematically searching the scientific databases (PubMed, SciFinder, Web of Science, Google Scholar, Scopus and others) and scientific literature. This article covers the recent advances in pharmacokinetic, toxicological, pharmacological/biological activities, and molecular mechanisms of the bioactive compound to understand health benefits of boldine better. SUMMARY Boldine exerts antioxidant, hepatoprotective, anti-atherosclerotic, anti-diabetic, analgesic, antipyretic, anti-inflammatory, anti-epileptic, neuroprotective, nephroprotective, anti-arthritis, anticancer and nootropic effects. Moreover, boldine exhibits its various pharmacological activities by altering antioxidant parameters (MDA, superoxide dismutase, glutathione), peroxynitrite, inflammatory markers apoptotic index, caspase-3, acetyl-cholinesterase, myeloperoxidase, TNF-α (Tumor necrosis factor-α), iNOS, Bcl-2-associated X protein (BAX), ACE-1(Angiotensin-converting enzyme-1), dopamine D2 receptors and nicotinic acetylcholine receptor. Boldine has the potential to modulate a variety of biological networks. OUTLOOK Due to its versatile pharmacological effects reported in various experimental animals as well as in randomized clinical trials for the treatment of facial melasma and for treatment of urinary stone lithotripsy in children as a complementary phytotherapy; in the future, this compound might be developed as a novel drug for a different indication.
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Affiliation(s)
- Deepak Lamba
- Central Council for Research in Ayurvedic Sciences, Janakpuri, New Delhi, India
| | - Durgesh Kumar Dwivedi
- Department of Pharmacology, National Research Institute of Unani Medicine for Skin Disorders, (Under Central Council for Research in Unani Medicine, New Delhi), Erragadda, Hyderabad, Telangana, India
| | - Monu Yadav
- Department of Pharmacology, Amity University, Gurugram, Haryana, India
| | - Sanjaya Kumar Yr
- Central Council for Research in Ayurvedic Sciences, Janakpuri, New Delhi, India
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Si Y, Zhu J, Xu X, Xu Y, Lee J, Park YD. Diphenolic boldine, an aporphine alkaloid: inhibitory effect evaluation on α-glucosidase by molecular dynamics integrating enzyme kinetics. J Biomol Struct Dyn 2024:1-13. [PMID: 38189319 DOI: 10.1080/07391102.2024.2301769] [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: 03/29/2023] [Accepted: 12/30/2023] [Indexed: 01/09/2024]
Abstract
Screening α-glucosidase inhibitors with novel structures is an important field in the development of anti-diabetic drugs due to their application in postprandial hyperglycemia control. Boldine is one of the potent natural antioxidants with a wide range of pharmacological activities. Virtual screening and biochemical inhibition kinetics combined with molecular dynamics simulations were conducted to verify the inactivation function of boldine on α-glucosidase. A series of inhibition kinetics and spectrometry detections were conducted to analyze the α-glucosidase inhibition. Computational simulations of molecular dynamics/docking analyses were conducted to detect boldine docking sites' details and evaluate the key binding residues. Boldine displayed a typical reversible and mixed-type inhibition manner. Measurements of circular dichroism and fluorescence spectrum showed boldine changed the secondary structure and loosened the tertiary conformation of target α-glucosidase. The computational molecular dynamics showed that boldine could block the active pocket site through close interaction with binding key residues, and two phenolic hydroxyl groups of boldine play a core function in α-glucosidase inhibition via ligand binding. This investigation reveals the boldine function on interaction with the α-glucosidase active site, which provides a new inhibitor candidate.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Yuexiu Si
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, P.R. China
- Key Labortary of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, P.R. China
| | - Jiabo Zhu
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, P.R. China
| | - Xia Xu
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, P.R. China
| | - Yueyuan Xu
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, P.R. China
| | - Jinhyuk Lee
- Disease Target Structure Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Korea
- Department of Bioinformatics, KRIBB School of Bioscience, University of Science and Technology (UST), Daejeon, Korea
| | - Yong-Doo Park
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, P.R. China
- Skin Diseases Research Center, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, P.R. China
- Zhejiang Provincial Key Laboratory of Applied Enzymology, Yangtze Delta Region Institute of Tsinghua University, Jiaxing, P.R. China
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Akotkar L, Aswar U, Ganeshpurkar A, Raj R, Pawar A. An Overview of Chemistry, Kinetics, Toxicity and Therapeutic Potential of Boldine in Neurological Disorders. Neurochem Res 2023; 48:3283-3295. [PMID: 37462836 DOI: 10.1007/s11064-023-03992-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 06/30/2023] [Accepted: 07/09/2023] [Indexed: 09/22/2023]
Abstract
Boldine is an alkaloid obtained from the medicinal herb Peumus boldus (Mol.) (Chilean boldo tree; boldo) and belongs to the family Monimiaceae. It exhibits a wide range of pharmacological effects such as antioxidant, anticancer, hepatoprotective, neuroprotective, and anti-diabetic properties. There is a dearth of information regarding its pharmacokinetics and toxicity in addition to its potential pharmacological activity. Boldine belongs to the aporphine alkaloid class and possesses lipophilic properties which enable its efficient absorption and distribution throughout the body, including the central nervous system. It exhibits potent free radical scavenging activity, thereby reducing oxidative stress and preventing neuronal damage. Through a variety of neuroprotective mechanisms, including suppression of AChE and BuChE activity, blocking of connexin-43 hemichannels, pannexin 1 channel, reduction of NF-κβ mediated interleukin release, and glutamate excitotoxicity which successfully reduces neuronal damage. These results point to its probable application in reducing neuroinflammation and oxidative stress in epilepsy, Alzheimer's disease (AD), and Parkinson's disease (PD). Moreover, its effects on serotonergic, dopaminergic, opioid, and cholinergic receptors were further investigated in order to determine its applicability for neurobehavioral dysfunctions. The article investigates the pharmacokinetics of boldine and reveals that it has a low oral bioavailability and a short half-life, requiring regular dosage to maintain therapeutic levels. The review studies boldine's potential therapeutic uses and mode of action while summarizing its neuroprotective benefits. Given the favorable results for boldine as a potential neurotherapeutic drug in laboratory animals, more research is required. However, in order to optimise its therapeutic potential, it must be more bioavailable with fewer detrimental side effects.
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Affiliation(s)
- Likhit Akotkar
- Department of Pharmacology, Poona College of Pharmacy, Bharati Vidyapeeth (Deemed to be University), Erandwane, Pune, 411038, Maharashtra, India
| | - Urmila Aswar
- Department of Pharmacology, Poona College of Pharmacy, Bharati Vidyapeeth (Deemed to be University), Erandwane, Pune, 411038, Maharashtra, India.
| | - Ankit Ganeshpurkar
- Department of Pharmaceutical Chemistry, Poona College of Pharmacy, Bharati Vidyapeeth (Deemed to be University), Pune, 411038, India
| | - Ritik Raj
- Department of Pharmaceutical Biotechnology, Poona College of Pharmacy, Bharati Vidyapeeth (Deemed to be University), Pune, 411038, India
| | - Atmaram Pawar
- Department of Pharmaceutics, Poona College of Pharmacy, Bharati Vidyapeeth (Deemed to be University), Pune, 411038, India
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Silva LCL, de Souza GH, Pateis VDO, Ames-Sibin AP, Silva BP, Bracht L, Comar JF, Peralta RM, Bracht A, Sá-Nakanishi AB. Inhibition of Gluconeogenesis by Boldine in the Perfused Liver: Therapeutical Implication for Glycemic Control. Int J Hepatol 2023; 2023:1283716. [PMID: 37056327 PMCID: PMC10089784 DOI: 10.1155/2023/1283716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 03/03/2023] [Accepted: 03/14/2023] [Indexed: 04/15/2023] Open
Abstract
The alkaloid boldine occurs in the Chilean boldo tree (Peumus boldus). It acts as a free radical scavenger and controls glycemia in diabetic rats. Various mechanisms have been proposed for this effect, including inhibited glucose absorption, stimulated insulin secretion, and increased expression of genes involved in glycemic control. Direct effects on glucose synthesis and degradation were not yet measured. To fill this gap, the present study is aimed at ensuring several metabolic pathways linked to glucose metabolism (e.g., gluconeogenesis) in the isolated perfused rat liver. In order to address mechanistic issues, energy transduction in isolated mitochondria and activities of gluconeogenic key enzymes in tissue preparations were also measured. Boldine diminished mitochondrial ROS generation, with no effect on energy transduction in isolated mitochondria. It inhibited, however, at least three enzymes of the gluconeogenic pathway, namely, phosphoenolpyruvate carboxykinase, fructose-bisphosphatase-1, and glucose 6-phosphatase, starting at concentrations below 50 μM. Consistently, in the perfused liver, boldine decreased lactate-, alanine-, and fructose-driven gluconeogenesis with IC50 values of 71.9, 85.2, and 83.6 μM, respectively. Conversely, the compound also increased glycolysis from glycogen-derived glucosyl units. The hepatic ATP content was not affected by boldine. It is proposed that the direct inhibition of hepatic gluconeogenesis by boldine, combined with the increase of glycolysis, could be an important event behind the diminished hyperglycemia observed in boldine-treated diabetic rats.
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Affiliation(s)
- Laís Cristina Lima Silva
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Gustavo Henrique de Souza
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Vanesa de Oliveira Pateis
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Ana Paula Ames-Sibin
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Beatriz Paes Silva
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Lívia Bracht
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Jurandir Fernando Comar
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Rosane Marina Peralta
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
| | - Adelar Bracht
- Department of Biochemistry, Labor of Hepatic Metabolism, State University of Maringá, Maringá, PR, Brazil
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Portugal ÓB, Flores-Quispe M. Concentrations of arsenic, cadmium, and lead in herbal infusion tea bags marketed in Tacna, Peru. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:534. [PMID: 35764709 DOI: 10.1007/s10661-022-10232-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 06/20/2022] [Indexed: 06/15/2023]
Abstract
The concentrations of arsenic, cadmium, and lead in infusion tea bags of Camellia sinensis (tea), Pimpinella anisum (anise), Matricaria recutita (chamomile), Peumus boldus (boldo), and Cymbopogon citratus (lemongrass) were determined by graphite furnace atomic absorption spectroscopy (GFAAS) for four commercial brands sold in Tacna, Peru, to compare these concentrations with international standards. The moderate level of arsenic obtained for C. sinensis (0.294 mg kg-1) exceeded the Codex Alimentarius standard for three of the four analyzed brands, while the level of arsenic in P. boldus (0.220 mg kg-1) exceeded the same standard and the Mercado Común del Sur (MERCOSUR) parameters for only one brand. The moderate level of cadmium outlined in the Codex Alimentarius and by the World Health Organization (WHO) was exceeded by two infusion tea bag brands of M. recutita (0.210 mg kg-1) and one brand of C. citratus (0.134 mg kg-1). Finally, based on the MERCOSUR parameters, moderate levels of lead were exceeded by only one brand of C. citratus (0.535 mg kg-1). To evaluate possible health risks, we also calculated the hazard index (HI) of the heavy metals in the target herbal tea bags. The values obtained were less than 1, showing negligible noncarcinogenic health risks for consumers. Despite this information and because of the elevated concentrations of arsenic, cadmium, and lead obtained in some of our results, we suggest more detailed studies to obtain more information about the potential toxicity of these products to humans.
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Affiliation(s)
- Óscar Begazo Portugal
- Academic Administration Department, Universidad Nacional Jorge Basadre Grohmann, Avenida Miraflores s/n, Tacna, Peru
| | - Marisel Flores-Quispe
- Academic Administration Department, Universidad Nacional Jorge Basadre Grohmann, Avenida Miraflores s/n, Tacna, Peru.
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Toledo JP, Fernández-Pérez EJ, Ferreira IL, Marinho D, Riffo-Lepe NO, Pineda-Cuevas BN, Pinochet-Pino LF, Burgos CF, Rego AC, Aguayo LG. Boldine Attenuates Synaptic Failure and Mitochondrial Deregulation in Cellular Models of Alzheimer's Disease. Front Neurosci 2021; 15:617821. [PMID: 33679301 PMCID: PMC7933475 DOI: 10.3389/fnins.2021.617821] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 01/25/2021] [Indexed: 11/18/2022] Open
Abstract
Alzheimer’s disease (AD) is the most common cause of senile dementia worldwide, characterized by both cognitive and behavioral deficits. Amyloid beta peptide (Aβ) oligomers (AβO) have been found to be responsible for several pathological mechanisms during the development of AD, including altered cellular homeostasis and synaptic function, inevitably leading to cell death. Such AβO deleterious effects provide a way for identifying new molecules with potential anti-AD properties. Available treatments minimally improve AD symptoms and do not extensively target intracellular pathways affected by AβO. Naturally-derived compounds have been proposed as potential modifiers of Aβ-induced neurodysfunction and cytotoxicity based on their availability and chemical diversity. Thus, the aim of this study was to evaluate boldine, an alkaloid derived from the bark and leaves of the Chilean tree Peumus boldus, and its capacity to block some dysfunctional processes caused by AβO. We examined the protective effect of boldine (1–10 μM) in primary hippocampal neurons and HT22 hippocampal-derived cell line treated with AβO (24–48 h). We found that boldine interacts with Aβ in silico affecting its aggregation and protecting hippocampal neurons from synaptic failure induced by AβO. Boldine also normalized changes in intracellular Ca2+ levels associated to mitochondria or endoplasmic reticulum in HT22 cells treated with AβO. In addition, boldine completely rescued the decrease in mitochondrial membrane potential (ΔΨm) and the increase in mitochondrial reactive oxygen species, and attenuated AβO-induced decrease in mitochondrial respiration in HT22 hippocampal cells. We conclude that boldine provides neuroprotection in AD models by both direct interactions with Aβ and by preventing oxidative stress and mitochondrial dysfunction. Additional studies are required to evaluate the effect of boldine on cognitive and behavioral deficits induced by Aβ in vivo.
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Affiliation(s)
- Juan P Toledo
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Barrio Universitario, Concepción, Chile
| | - Eduardo J Fernández-Pérez
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Barrio Universitario, Concepción, Chile
| | - Ildete L Ferreira
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,IIIUC-Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Daniela Marinho
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,IIIUC-Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
| | - Nicolas O Riffo-Lepe
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Barrio Universitario, Concepción, Chile
| | - Benjamin N Pineda-Cuevas
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Barrio Universitario, Concepción, Chile
| | - Luis F Pinochet-Pino
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Barrio Universitario, Concepción, Chile
| | - Carlos F Burgos
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Barrio Universitario, Concepción, Chile
| | - A Cristina Rego
- CNC-Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,FMUC-Faculty of Medicine, University of Coimbra, Coimbra, Portugal
| | - Luis G Aguayo
- Laboratory of Neurophysiology, Department of Physiology, Universidad de Concepción, Barrio Universitario, Concepción, Chile
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Potential of Naturally Derived Alkaloids as Multi-Targeted Therapeutic Agents for Neurodegenerative Diseases. Molecules 2021; 26:molecules26030728. [PMID: 33573300 PMCID: PMC7866829 DOI: 10.3390/molecules26030728] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2021] [Revised: 01/26/2021] [Accepted: 01/26/2021] [Indexed: 01/11/2023] Open
Abstract
Alkaloids are a class of secondary metabolites that can be derived from plants, fungi and marine sponges. They are widely known as a continuous source of medicine for the management of chronic disease including cancer, diabetes and neurodegenerative diseases. For example, galanthamine and huperzine A are alkaloid derivatives currently being used for the symptomatic management of neurodegenerative disease. The etiology of neurodegenerative diseases is polygenic and multifactorial including but not limited to inflammation, oxidative stress and protein aggregation. Therefore, natural-product-based alkaloids with polypharmacology modulation properties are potentially useful for further drug development or, to a lesser extent, as nutraceuticals to manage neurodegeneration. This review aims to discuss and summarise recent developments in relation to naturally derived alkaloids for neurodegenerative diseases.
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Vásquez-Espinal A, Yañez O, Osorio E, Areche C, García-Beltrán O, Ruiz LM, Cassels BK, Tiznado W. Structure–antioxidant activity relationships in boldine and glaucine: a DFT study. NEW J CHEM 2021. [DOI: 10.1039/d0nj04028b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT calculations indicate that boldine and glaucine exhibit direct antioxidant activity through the HAT and SPLET (at high pH values) mechanisms.
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Affiliation(s)
- Alejandro Vásquez-Espinal
- Computational and Theoretical Chemistry Group
- Departamento de Ciencias Químicas
- Facultad de Ciencias Exactas
- Universidad Andres Bello
- Santiago
| | - Osvaldo Yañez
- Computational and Theoretical Chemistry Group
- Departamento de Ciencias Químicas
- Facultad de Ciencias Exactas
- Universidad Andres Bello
- Santiago
| | - Edison Osorio
- Facultad de Ciencias Naturales y Matemáticas
- Universidad de Ibagué
- Carrera 22 calle 67
- Ibagué
- Colombia
| | - Carlos Areche
- Departamento de Química
- Facultad de Ciencias
- Universidad de Chile
- Santiago
- Chile
| | - Olimpo García-Beltrán
- Facultad de Ciencias Naturales y Matemáticas
- Universidad de Ibagué
- Carrera 22 calle 67
- Ibagué
- Colombia
| | - Lina M. Ruiz
- Instituto de Ciencias Biomédicas
- Facultad Ciencias de la Salud
- Universidad Autónoma de Chile
- Santiago
- Chile
| | - Bruce K. Cassels
- Departamento de Química
- Facultad de Ciencias
- Universidad de Chile
- Santiago
- Chile
| | - William Tiznado
- Computational and Theoretical Chemistry Group
- Departamento de Ciencias Químicas
- Facultad de Ciencias Exactas
- Universidad Andres Bello
- Santiago
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Heidari R, Arabnezhad MR, Ommati MM, Azarpira N, Ghodsimanesh E, Niknahad H. Boldine Supplementation Regulates Mitochondrial Function and Oxidative Stress in a Rat Model of Hepatotoxicity. PHARMACEUTICAL SCIENCES 2019. [DOI: 10.15171/ps.2019.1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
Background: The xenobiotics-induced liver injury is a clinical complication. Hence, finding new hepatoprotective strategies has clinical value. Oxidative stress and its subsequent complications are major mechanisms involved in xenobiotics-induced hepatotoxicity. Boldine is one of the most potent antioxidant molecules widely investigated for its protective properties in different experimental models. In the current study, the hepatoprotective properties of boldine and its potential mechanisms of hepatoprotection have been investigated. Methods: Rats received thioacetamide (TAA; 200 mg/kg, i.p) as a model of acute liver injury. Boldine (5, 10, 1nd 20 mg/kg; 24 hours intervals; oral) was administered as the hepatoprotective agent. Results: Liver injury was evident in TAA-treated animals (48 hours after TAA exposure) as a severe increase in serum level of liver injury biomarkers and histopathological alterations. Moreover, markers of oxidative stress were increased in liver tissue of TAA-treated rats. Assessment of mitochondrial indices of functionality revealed a significant decrease in mitochondrial dehydrogenases activity, the collapse of mitochondrial membrane potential, mitochondrial swelling and depletion of ATP content. It was found that boldine supplementation mitigated liver tissue markers of oxidative stress and improved mitochondrial indices of functionality in TAA-treated animals. Conclusion: The hepatoprotective properties of boldine might primarily rely on antioxidant and mitochondria protecting effects of this alkaloid.
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Affiliation(s)
- Reza Heidari
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Reza Arabnezhad
- Pharmacology and Toxicology Department, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mohammad Mehdi Ommati
- Pharmacology and Toxicology Department, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Negar Azarpira
- Transplant Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Elham Ghodsimanesh
- Pharmacology and Toxicology Department, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hossein Niknahad
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
- Pharmacology and Toxicology Department, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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Mondal J, Patra M, Panigrahi AK, Khuda-Bukhsh AR. Improved drug carriage and protective potential against Cisplatin-induced toxicity using Boldine-loaded PLGA nanoparticles. J Ayurveda Integr Med 2018; 11:24-36. [PMID: 30115410 PMCID: PMC7125378 DOI: 10.1016/j.jaim.2017.11.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/06/2017] [Accepted: 11/14/2017] [Indexed: 12/18/2022] Open
Abstract
Background Cisplatin is a widely-used potent anti-cancer drug having severe side-effects precluding its sustained use. Objectives Poly (lactide-co-glycolide) (PLGA)-nanoparticles loaded Boldine, an antioxidant ingredient of ethanolic extract of Boldo plant (Peumus boldus) was tested in cancer mice model, Mus musculus to examine if it could reduce unwanted Cisplatin-induced toxicity in normal tissue. Material and methods Nano-encapsulation of Boldine was done by following the standardized solvent displacement method. Physico-chemical characterization of PLGA-encapsulated nano-Boldine (NBol) was accomplished through analyses of various spectroscopic techniques. Status of major antioxidant enzymes, functional markers, and lipid peroxidation (LPO) was also determined in certain tissue and serum samples. Percentage of cells undergoing cytotoxic death, Reactive oxygen species (ROS) accumulation and mitochondrial functioning were analyzed in both normal and cancer mice. Nanoscale changes in chromatin organization were assessed by Transmission electron microscopy (TEM). mRNA and protein expressions of Top II, Bax, Bcl-2, Cyt c, caspase 3 were studied by RT-PCR, immunoblot and immunofluorescence. Results NBol had faster mobility, site-specific action and ability of sustained particle release. NBol readily entered cells, prevented Cisplatin to intercalate with dsDNA resulting in reduction of chromatin condensation, with corresponding changes in ROS levels, mitochondrial functioning and antioxidant enzyme activities, leading to reduction in Deoxyribose nucleic acid (DNA) damage and cytotoxic cell death. Expression pattern of apoptotic genes like Top II, p53, Bax, Bcl-2, cytochrome c and caspase-3 suggested greater cytoprotective potentials of NBol in normal tissues. Conclusions Compared to Boldine (Bol), NBol had better ability of drug carriage and protective potentials (29.00% approximately) against Cisplatin-induced toxicity. Combinational therapeutic use of PLGA-NBol can reduce unwanted Cisplatin-induced cellular toxicity facilitating use of Cisplatin. PLGA-nano Boldine (NBol) has been physico-chemically and functionally studied. NBol has faster cellular entry, mobility, action and can cross blood–brain-barrier. Toxicity biomarkers studied suggest NBol to protect liver and kidney toxicity. NBol intercalates with DNA competitively and hinders Cisplatin intercalation. NBol presumably acts through p53 dependent Bax/Bcl2 signalling pathway.
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Affiliation(s)
- Jesmin Mondal
- Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India
| | - Mousumi Patra
- Molecular Biology Laboratory, Department of Biochemistry and Biophysics, University of Kalyani, Kalyani 741235, India
| | - Ashis Kumar Panigrahi
- Fisheries and Aquaculture Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India
| | - Anisur Rahman Khuda-Bukhsh
- Cytogenetics and Molecular Biology Laboratory, Department of Zoology, University of Kalyani, Kalyani 741235, India.
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Yan MZ, Chang Q, Zhong Y, Xiao BX, Feng L, Cao FR, Pan RL, Zhang ZS, Liao YH, Liu XM. Lotus Leaf Alkaloid Extract Displays Sedative-Hypnotic and Anxiolytic Effects through GABAA Receptor. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9277-9285. [PMID: 26448283 DOI: 10.1021/acs.jafc.5b04141] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Lotus leaves have been used traditionally as both food and herbal medicine in Asia. Open-field, sodium pentobarbital-induced sleeping and light/dark box tests were used to evaluate sedative-hypnotic and anxiolytic effects of the total alkaloids (TA) extracted from the herb, and the neurotransmitter levels in the brain were determined by ultrafast liquid chromatography-tandem mass spectrometry. The effects of picrotoxin, flumazenil, and bicuculline on the hypnotic activity of TA, as well as the influence of TA on Cl(-) influx in cerebellar granule cells, were also investigated. TA showed a sedative-hypnotic effect by increasing the brain level of γ-aminobutyric acid (GABA), and the hypnotic effect could be blocked by picrotoxin and bicuculline, but could not be antagonized by flumazenil. Additionally, TA could increase Cl(-) influx in cerebellar granule cells. TA at 20 mg/kg induced anxiolytic-like effects and significantly increased the concentrations of serotonin (5-HT), 5-hydroxyindoleacetic acid (5-HIAA), and dopamine (DA). These data demonstrated that TA exerts sedative-hypnotic and anxiolytic effects via binding to the GABAA receptor and activating the monoaminergic system.
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Affiliation(s)
- Ming-Zhu Yan
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science & Technology , Tianjin 300457, People's Republic of China
| | - Qi Chang
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
| | - Yu Zhong
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science & Technology , Tianjin 300457, People's Republic of China
| | - Bing-Xin Xiao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
| | - Li Feng
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
| | - Fang-Rui Cao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
| | - Rei-Le Pan
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
| | - Ze-Sheng Zhang
- Key Laboratory of Food Nutrition and Safety, Ministry of Education, College of Food Engineering and Biotechnology, Tianjin University of Science & Technology , Tianjin 300457, People's Republic of China
| | - Yong-Hong Liao
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
| | - Xin-Min Liu
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100193, People's Republic of China
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Boldine, a natural aporphine alkaloid, inhibits telomerase at non-toxic concentrations. Chem Biol Interact 2015; 231:27-34. [PMID: 25746354 DOI: 10.1016/j.cbi.2015.02.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Revised: 01/31/2015] [Accepted: 02/23/2015] [Indexed: 11/20/2022]
Abstract
In a preliminary screening study of natural alkaloids, boldine, an aporphine alkaloid, showed an interesting dose and time dependent anti-proliferative effect in several cancer cell lines. Cytotoxicity of boldine in human fibroblasts was considerably lower than the telomerase positive embryonic kidney HEK293 and breast cancer MCF-7 and MDA-MB-231 cells. Whether boldine can inhibit telomerase was investigated here using a modified quantitative real-time telomere repeat amplification protocol (q-TRAP). This test showed that boldine inhibits telomerase in cells treated with sub-cytotoxic concentrations. Telomerase inhibition occurs via down-regulation of hTERT, the catalytic subunit of the enzyme. Boldine changed the splicing variants of hTERT towards shorter non-functional transcripts as well. A direct interaction of boldine with the enzyme may also be involved, though thermal FRET method did not detect any substantial interaction between boldine and synthetic telomere sequences. This study advocates boldine as a valuable candidate for telomerase-targeted cancer care. This study suggests that derivatives of boldine could be potent anti-cancer drugs.
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Noureini SK, Wink M. Dose-dependent cytotoxic effects of boldine in HepG-2 cells-telomerase inhibition and apoptosis induction. Molecules 2015; 20:3730-43. [PMID: 25719742 PMCID: PMC6272231 DOI: 10.3390/molecules20033730] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 02/11/2015] [Accepted: 02/12/2015] [Indexed: 01/14/2023] Open
Abstract
Plant metabolites are valuable sources of novel therapeutic compounds. In an anti-telomerase screening study of plant secondary metabolites, the aporphine alkaloid boldine (1,10-dimethoxy-2,9-dihydroxyaporphine) exhibited a dose and time dependent cytotoxicity against hepatocarcinoma HepG-2 cells. Here we focus on the modes and mechanisms of the growth-limiting effects of this compound. Telomerase activity and expression level of some related genes were estimated by real-time PCR. Modes of cell death also were examined by microscopic inspection, staining methods and by evaluating the expression level of some critically relevant genes. The growth inhibition was correlated with down-regulation of the catalytic subunit of telomerase (hTERT) gene (p < 0.01) and the corresponding reduction of telomerase activity in sub-cytotoxic concentrations of boldine (p < 0.002). However, various modes of cell death were stimulated, depending on the concentration of boldine. Very low concentrations of boldine over a few passages resulted in an accumulation of senescent cells so that HepG-2 cells lost their immortality. Moreover, boldine induced apoptosis concomitantly with increasing the expression of bax/bcl2 (p < 0.02) and p21 (p < 0.01) genes. Boldine might thus be an interesting candidate as a potential natural compound that suppresses telomerase activity in non-toxic concentrations.
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Affiliation(s)
- Sakineh Kazemi Noureini
- Deptartment of Biology, Faculty of Basic Sciences, Hakim Sabzevari University, P.O. Box 397, Sabzevar, 9617966376 Iran.
| | - Michael Wink
- Department of Biology, Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, INF 364, 69120, Heidelberg, Germany.
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Dopamine Cytotoxicity Involves Both Oxidative and Nonoxidative Pathways in SH-SY5Y Cells: Potential Role of Alpha-Synuclein Overexpression and Proteasomal Inhibition in the Etiopathogenesis of Parkinson's Disease. PARKINSONS DISEASE 2014; 2014:878935. [PMID: 24804146 PMCID: PMC3996320 DOI: 10.1155/2014/878935] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/06/2013] [Revised: 02/19/2014] [Accepted: 02/25/2014] [Indexed: 12/29/2022]
Abstract
Background. The cytotoxic effects of dopamine (DA) on several catecholaminergic cell lines involve DA oxidation products like reactive oxygen species (ROS) and toxic quinones and have implications in the pathogenesis of sporadic Parkinson's disease (PD). However, many molecular details are yet to be elucidated, and the possible nonoxidative mechanism of dopamine cytotoxicity has not been studied in great detail. Results. Cultured SH-SY5Y cells treated with DA (up to 400 μM) or lactacystin (5 μM) or DA (400 μM) plus N-acetylcysteine (NAC, 2.5 mM) for 24 h are processed accordingly to observe the cell viability, mitochondrial dysfunctions, oxidative stress parameters, proteasomal activity, expression of alpha-synuclein gene, and intracellular accumulation of the protein. DA causes mitochondrial dysfunction and extensive loss of cell viability partially inhibited by NAC, potent inhibition of proteasomal activity marginally prevented by NAC, and overexpression with accumulation of intracellular alpha-synuclein partially preventable by NAC. Under similar conditions of incubation, NAC completely prevents enhanced production of ROS and increased formation of quinoprotein adducts in DA-treated SH-SY5Y cells. Separately, proteasomal inhibitor lactacystin causes accumulation of alpha-synuclein as well as mitochondrial dysfunction and cell death. Conclusions. DA cytotoxicity includes both oxidative and nonoxidative modes and may involve overexpression and accumulation of alpha-synuclein as well as proteasomal inhibition.
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Si YX, Ji S, Wang W, Fang NY, Jin QX, Park YD, Qian GY, Lee J, Han HY, Yin SJ. Effects of boldine on tyrosinase: Inhibition kinetics and computational simulation. Process Biochem 2013. [DOI: 10.1016/j.procbio.2012.11.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Milián L, Ballesteros R, Sanz MJ, Blázquez MA. Synthesis and reactive oxygen species scavenging activity of halogenated alkaloids from boldine. Med Chem Res 2011. [DOI: 10.1007/s00044-011-9844-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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17
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Genistein inhibits mitochondrial-targeted oxidative damage induced by beta-amyloid peptide 25–35 in PC12 cells. J Bioenerg Biomembr 2011; 43:399-407. [DOI: 10.1007/s10863-011-9362-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 05/19/2011] [Indexed: 12/25/2022]
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18
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Jana S, Sinha M, Chanda D, Roy T, Banerjee K, Munshi S, Patro BS, Chakrabarti S. Mitochondrial dysfunction mediated by quinone oxidation products of dopamine: Implications in dopamine cytotoxicity and pathogenesis of Parkinson's disease. Biochim Biophys Acta Mol Basis Dis 2011; 1812:663-73. [DOI: 10.1016/j.bbadis.2011.02.013] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2010] [Revised: 12/31/2010] [Accepted: 02/25/2011] [Indexed: 11/24/2022]
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19
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Antioxidant and pro-oxidant properties of boldine on hippocampal slices exposed to oxygen–glucose deprivation in vitro. Neurotoxicology 2008; 29:1136-40. [DOI: 10.1016/j.neuro.2008.05.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Revised: 05/09/2008] [Accepted: 05/29/2008] [Indexed: 01/08/2023]
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20
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Lee JJ, Jin CM, Kim YK, Ryu SY, Lim SC, Lee MK. Effects of anonaine on dopamine biosynthesis and L-DOPA-induced cytotoxicity in PC12 cells. Molecules 2008; 13:475-87. [PMID: 18305432 PMCID: PMC6245076 DOI: 10.3390/molecules13020475] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Revised: 02/22/2008] [Accepted: 02/25/2008] [Indexed: 11/16/2022] Open
Abstract
The effects of anonaine, an aporphine isoquinoline alkaloid, on dopamine biosynthesis and L-DOPA-induced cytotoxicity in PC12 cells were investigated. Anonaine at concentration ranges of 0.01-0.2 microM showed a significant inhibition of dopamine content at 24 h, with an IC(50) value of 0.05 microM. Anonaine at 0.05 microM inhibited tyrosine hydroxylase (TH) and aromatic L-amino acid decarboxylase (AADC) activities to 38.4-40.2% and 78.4-90.2% of control levels at 12-24 h and 3-6 h, respectively. TH activity was more influenced than AADC activity. Anonaine also decreased intracellular cyclic AMP levels, but not intracellular Ca(2+) concentrations. In addition, anonaine (0.05 microM) reduced L-DOPA (50 microM and 100 microM)-induced increases in dopamine content at 24 h. However, anonaine (0.05 microM) did not enhance L-DOPA (50 microM and 100 microM)-induced cell death after 24 h. These results suggest that anonaine inhibits dopamine biosynthesis by mainly reducing TH activity without aggravating L-DOPA-induced cytotoxicity in PC12 cells.
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Affiliation(s)
- Jae Joon Lee
- College of Pharmacy and Research Center for Bioresource and Health, Chungbuk National University, 12, Gaeshin-dong, Heungduk-gu, Cheongju 361-763, Korea; E-mail: (Jae Joon Lee); (Chun Mei Jin); (Sung Cil Lim)
| | - Chun Mei Jin
- College of Pharmacy and Research Center for Bioresource and Health, Chungbuk National University, 12, Gaeshin-dong, Heungduk-gu, Cheongju 361-763, Korea; E-mail: (Jae Joon Lee); (Chun Mei Jin); (Sung Cil Lim)
| | - Young Kyoon Kim
- College of Forest Science, Kookmin University, Seoul 136-702, Korea; E-mail: (Young Kyoon Kim)
| | - Shi Yong Ryu
- Korea Research Institute of Chemical Technology, Taejeon 305-606, Korea; E-mail: (Shi Yong Ryu)
| | | | - Myung Koo Lee
- College of Pharmacy and Research Center for Bioresource and Health, Chungbuk National University, 12, Gaeshin-dong, Heungduk-gu, Cheongju 361-763, Korea; E-mail: (Jae Joon Lee); (Chun Mei Jin); (Sung Cil Lim)
- Author to whom correspondence should be addressed. E-Mail: ; Tel: +82-43-262-2822, Fax: +82-43-276-2754
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Jin CM, Lee JJ, Yang YJ, Kim YM, Kim YK, Ryu SY, Lee MK. Liriodenine inhibits dopamine biosynthesis and L-DOPA-induced dopamine content in PC12 cells. Arch Pharm Res 2007; 30:984-90. [PMID: 17879752 DOI: 10.1007/bf02993967] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The inhibitory effects of liriodenine, an aporphine isoquinoline alkaloid, on dopamine biosynthesis and L-DOPA-induced dopamine content increases in PC12 cells were investigated. Treatment of PC12 cells with 5-10 microM liriodenine significantly decreased the intracellular dopamine content in a concentration-dependent manner (IC50 value, 8.4 microM). Liriodenine was not cytotoxic toward PC12 cells at concentrations up to 20 microM. Tyrosine hydroxylase (TH) and aromatic L-amino acid decarboxylase (AADC) activities were inhibited by 10 microM liriodenine to 20-70% and 10-14% of control levels at 3-12 h, respectively; TH activity was more influenced than AADC activity. The levels of TH mRNA, intracellular cyclic AMP and basal Ca2+ concentration were also decreased by 10 microM liriodenine. In addition, 10 microM liriodenine reduced L-DOPA (20-100 microM)-induced increases in dopamine content. However, 10 microM liriodenine resulted in a protective effect against L-DOPA (50-100 microM)-induced cytotoxicity. These results suggest that liriodenine regulates dopamine biosynthesis by partially reducing TH activity and TH gene expression and has protective effects against L-DOPA-induced cytotoxicity in PC12 cells.
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Affiliation(s)
- Chun Mei Jin
- College of Pharmacy and Research Center for Bioresource and Health, Chungbuk National University, Cheongju, Korea
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Toninello A, Pietrangeli P, De Marchi U, Salvi M, Mondovì B. Amine oxidases in apoptosis and cancer. BIOCHIMICA ET BIOPHYSICA ACTA 2006; 1765:1-13. [PMID: 16225993 DOI: 10.1016/j.bbcan.2005.09.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2004] [Revised: 09/12/2005] [Accepted: 09/13/2005] [Indexed: 02/02/2023]
Abstract
Amine oxidases, the major enzymes of biogenic amines metabolism, are considered to be biological regulators, especially for cell growth and differentiation. A primary involvement of amine oxidases in cancer growth inhibition and progression, especially by means of aldehydes, H(2)O(2) and other reactive oxygen species, the amine oxidase-mediated products of biogenic amines oxidation, has been demonstrated. Amine oxidases are involved in cancer growth inhibition because of the higher content in tumour cells of biogenic amines in comparison to normal cells. The cytotoxic effect can be explained by a damage to cell membranes and/or nuclei or, indirectly, through modulation of membrane permeability transition and therefore apoptosis. The oxidation products of biogenic amines appears to be also carcinogenic, while acrolein, produced from the oxidation of spermine and spermidine, should be a key compound both carcinogenic and cytotoxic. The cancer inhibition/promotion effect of amine oxidases could be explained by taking into consideration the full pattern of the enzyme content of the cell. The balance of amine oxidases and antioxidant enzymes appear to be a crucial point for cancer inhibition or progression. A long lasting imbalance of these enzymes appears to be carcinogenic, while, for a short time, amine oxidases are cytotoxic for cancer cells.
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Affiliation(s)
- Antonio Toninello
- Department of Biological Chemistry University of Padua and C.N.R. Institute of Neuroscience, Unit for the Study of Biomembranes, Viale G. Colombo 3, 35121 Padua, Italy
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O'Brien P, Carrasco-Pozo C, Speisky H. Boldine and its antioxidant or health-promoting properties. Chem Biol Interact 2006; 159:1-17. [PMID: 16221469 DOI: 10.1016/j.cbi.2005.09.002] [Citation(s) in RCA: 116] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2005] [Revised: 09/08/2005] [Accepted: 09/09/2005] [Indexed: 11/18/2022]
Abstract
The increasing recognition of the participation of free radical-mediated oxidative events in the initiation and/or progression of cardiovascular, tumoural, inflammatory and neurodegenerative disorders, has given rise to the search for new antioxidant molecules. An important source of such molecules has been plants for which there is an ethno-cultural base for health promotion. An important example of this is boldo (Peumus boldus Mol.), a chilean tree whose leaves have been traditionally employed in folk medicine and is now widely recognized as a herbal remedy by a number of pharmacopoeias. Boldo leaves are rich in several aporphine-like alkaloids, of which boldine is the most abundant one. Research conducted during the early 1990s led to the discovery that boldine is one of the most potent natural antioxidants. Prompted by the latter, a large and increasing number of studies emerged, which have focused on characterizing some of the pharmacological properties that may arise from the free radical-scavenging properties of boldine. The present review attempts to exhaustively cover and discuss such studies, placing particular attention on research conducted during the last decade. Mechanistic aspects and structure-activity data are discussed. The review encompasses pharmacological actions, which arise from its antioxidant properties (e.g., cyto-protective, anti-tumour promoting, anti-inflammatory, anti-diabetic and anti-atherogenic actions), as well as those that do not seem to be associated with such activity (e.g., vasorelaxing, anti-trypanocidal, immuno- and neuro-modulator, cholagogic and/or choleretic actions). Based on the pharmacological and toxicological data now available, further research needs and recommendations are suggested to define the actual potential of boldine for its use in humans.
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Affiliation(s)
- Peter O'Brien
- Graduate Department of Pharmaceutical Sciences, Faculty of Pharmacy, University of Toronto, Toronto, Ont., Canada
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Gao J, Tang X, Dou H, Fan Y, Zhao X, Xu Q. Hepatoprotective activity of Terminalia catappa L. leaves and its two triterpenoids. J Pharm Pharmacol 2004; 56:1449-55. [PMID: 15525453 DOI: 10.1211/0022357044733] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The aim of this study was to evaluate the effect of the chloroform extract of Terminalia catappa L. leaves (TCCE) on carbon tetrachloride (CCl(4))-induced acute liver damage and D-galactosamine (D-GalN)-induced hepatocyte injury. Moreover, the effects of ursolic acid and asiatic acid, two isolated components of TCCE, on mitochondria and free radicals were investigated to determine the mechanism underlying the action of TCCE on hepatotoxicity. In the acute hepatic damage test, remarkable rises in the activity of serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) (5.7- and 2.0-fold) induced by CCl(4) were reversed and significant morphological changes were lessened with pre-treatment with 50 and 100 mg kg(-1) TCCE. In the hepatocyte injury experiment, the increases in ALT and AST levels (1.9- and 2.1-fold) in the medium of primary cultured hepatocytes induced by D-GalN were blocked by pre-treatment with 0.05, 0.1, 0.5 g L(-1) TCCE. In addition, Ca(2+)-induced mitochondrial swelling was dose-dependently inhibited by 50-500 microM ursolic acid and asiatic acid. Both ursolic acid and asiatic acid, at concentrations ranging from 50 to 500 microM, showed dose-dependent superoxide anion and hydroxyl radical scavenging activity. It can be concluded that TCCE has hepatoprotective activity and the mechanism is related to protection of liver mitochondria and the scavenging action on free radicals.
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Affiliation(s)
- Jing Gao
- School of Medicine, Nanjing University, 22 Hankou Road, Nanjing 210093, China.
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Abstract
This review covers beta-phenylethylamines and isoquinoline alkaloids derived from them, including further products of oxidation. condensation with formaldehyde and rearrangement, some of which do not contain an isoquinoline system, together with naphthylisoquinoline alkaloids, which have a different biogenetic origin. The occurrence of the alkaloids, with the structures of new bases, together with their reactions, syntheses and biological activities are reported. The literature from July 2002 to June 2003 is reviewed, with 568 references cited.
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Hou RCW, Huang HM, Tzen JTC, Jeng KCG. Protective effects of sesamin and sesamolin on hypoxic neuronal and PC12 cells. J Neurosci Res 2003; 74:123-33. [PMID: 13130514 DOI: 10.1002/jnr.10749] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Reactive oxygen species (ROS) are important mediators of a variety of pathological processes, including inflammation and ischemic injury. The neuroprotective effects of sesame antioxidants, sesamin and sesamolin, against hypoxia or H2O2-induced cell injury were evaluated by cell viability or lactate dehydrogenase (LDH) activity. Sesamin and sesamolin reduced LDH release of PC12 cells under hypoxia or H2O2-stress in a dose-dependent manner. Dichlorofluorescein (DCF)-sensitive ROS production was induced in PC12 cells by hypoxia or H2O2-stress but was diminished in the presence of sesamin and sesamolin. We evaluated further the role of mitogen-activated protein kinases (MAPKs) and caspase-3 in hypoxia-induced PC12 cell death. Extracellular signal-regulated protein kinase (ERK) 1, c-jun N-terminal kinase (JNK), and p38 MAPKs of signaling pathways were activated during hypoxia. We found that the inhibition of MAPKs and caspase-3 by sesamin and sesamolin correlated well with the reduction in LDH release under hypoxia. Furthermore, the hypoxia-induced apoptotic-like cell death in cultured cortical cells as detected by a fluorescent DNA binding dye was reduced significantly by sesamin and sesamolin. Taken together, these results suggest that the protective effect of sesamin and sesamolin on hypoxic neuronal and PC12 cells might be related to suppression of ROS generation and MAPK activation.
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Affiliation(s)
- Rolis Chien-Wei Hou
- Graduate Institute of Biotechnology, National Chung Hsing University, Taichung, Taiwan, Republic of China
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Lee CS, Song EH, Park SY, Han ES. Combined effect of dopamine and MPP+ on membrane permeability in mitochondria and cell viability in PC12 cells. Neurochem Int 2003; 43:147-54. [PMID: 12620283 DOI: 10.1016/s0197-0186(02)00214-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present study examined the combined effect of dopamine and 1-methyl-4-phenylpyridinium (MPP(+)) on the membrane permeability in isolated brain mitochondria and on cell viability in PC12 cells. MPP(+) increased effect of dopamine against the swelling, membrane potential, and Ca(2+) transport in isolated mitochondria, which was not inhibited by the addition of antioxidant enzymes (SOD and catalase). Dopamine or MPP(+) caused the decrease in transmembrane potential, increase in reactive oxygen species, depletion of GSH, and cell death in PC12 cells. Antioxidant enzymes reduced each effect of dopamine and MPP(+) against PC12 cells. Co-addition of dopamine and MPP(+) caused the decrease in the transmembrane potential and increase in the formation of reactive oxygen species in PC12 cells, in which they showed an additive effect. Dopamine plus MPP(+)-induced the depletion of GSH and cell death in PC12 cells were not decreased by the addition of antioxidant enzymes, rutin, diethylstilbestrol, and ascorbate. Melanin caused a cell viability loss in PC12 cells. The N-acetylcysteine, N-phenylthiourea, and 5-hydroxyindole decreased the cell death and the formation of dopamine quinone and melanin induced by co-addition of dopamine and MPP(+), whereas deprenyl and chlorgyline did not show an inhibitory effect. The results suggest that co-addition of dopamine and MPP(+) shows an enhancing effect on the change in mitochondrial membrane permeability and cell death, which may be accomplished by toxic quinone and melanin derived from the MPP(+)-stimulated dopamine oxidation.
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Affiliation(s)
- Chung Soo Lee
- Department of Pharmacology, College of Medicine, Chung-Ang University, 156-756, Seoul, South Korea.
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Galindo MF, Jordán J, González-García C, Ceña V. Chromaffin cell death induced by 6-hydroxydopamine is independent of mitochondrial swelling and caspase activation. J Neurochem 2003; 84:1066-73. [PMID: 12603830 DOI: 10.1046/j.1471-4159.2003.01592.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Our results provide evidence that 6-hydroxydopamine induced, after auto-oxidation, toxic levels of hydrogen peroxide (H2O2) that caused bovine chromaffin cell toxicity and death. 6-Hydroxydopamine (6-OHDA) treatment markedly reduced, in a dose-response fashion, chromaffin cell viability. Cell death was accompanied by cell shrinkage, nuclear condensation and DNA degradation. Under our experimental conditions, 6-OHDA auto-oxidation formed quinones and reactive oxygen species (ROS) that mainly contributed to 6-OHDA-induced cytotoxicity in bovine chromaffin cells. Accordingly, different antioxidants, including catalase, vitamin E, Mn(IIItetrakis(4-benzoic acid)porphyrin chloride (MnTBAP) or ascorbic acid, provided protection against 6-OHDA-induced toxicity. Further evidence that 6-OHDA induces oxidative stress is provided by the fact that this compound decreased total mitochondrial reduced NAD(P)H levels. Our results also suggest that mitochondrial swelling and caspase activation do not play a direct role in 6-OHDA-induced death in bovine chromaffin cells.
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Affiliation(s)
- María F Galindo
- Centro Regional de Investigaciones Biomédicas y Dpto. de Ciencias Médicas, Facultad de Medicina, Universidad de Castilla-La Mancha, Avda. España, s/n, 02071 Albacete, Spain
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