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Ben EE, Beshel JA, Owu DU, Palacios J, Nwokocha M, Bórquez J, Simirgiotis MJ, Nwokocha CR. Identification of Phytochemicals and Assessment of Hypoglycemic and Haematological Potentials of Terminalia catappa Linn leaf Extract in Alloxan-induced Diabetic Wistar Rats. Cardiovasc Hematol Agents Med Chem 2024; 22:139-150. [PMID: 37246326 DOI: 10.2174/1871525721666230526152917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 03/08/2023] [Accepted: 04/19/2023] [Indexed: 05/30/2023]
Abstract
INTRODUCTION Hypoglycemia and anemia are associated with diabetes mellitus. Medicinal plants and orthodox drugs have been used for the management of this disease. This study aimed to validate the ethnomedical claims of Terminalia catappa Linn. leaf extract in reducing hyperglycemia and hematological potentials in alloxan-induced diabetic rats and to identify likely antidiabetic compounds. MATERIALS AND METHODS Ultra-high-performance liquid chromatography was used to identify the various phytochemical constituents. Male Wistar rats were randomly divided into five groups containing 6 rats per group. Group 1 (control) received 0.2 ml/kg of distilled water, group 2 received 130 mg/kg of T. catappa aqueous extract, groups 3-5 were diabetic and received 0.2 ml/g distilled water, 130 mg/kg T. catappa extract and 0.75 IU/kg insulin respectively for 14 days. Hematological parameters were measured and an oral glucose tolerance test was carried out using 2 g/kg body weight glucose. A histological analysis of the pancreas was done. RESULTS Twenty-five compounds identified as flavonoids, phenolic acids, tannins, and triterpenoids were detected. The blood glucose levels were significantly (p <0.05) elevated in DM groups but were significantly (p <0.05) reduced following Terminalia catappa leaves extract to DM groups. There was s significant (p <0.05) increase in insulin levels improved hematological parameters (RBC, WBC, and platelets), and increased islet population. CONCLUSION These results suggest that T. catappa extract has hypoglycemic, insulinogenic, and hematopoietic potentials in diabetic condition and offer protection to the pancreas which could be attributed to the phytochemical constituents thereby justifying its use in traditional therapy.
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Affiliation(s)
- Ezekiel E Ben
- Department of Physiology, University of Uyo, Akwa Ibom State, Nigeria
| | - Justin A Beshel
- Department of Physiology, University of Calabar, Cross River State, Nigeria
| | - Daniel U Owu
- Department of Physiology, University of Calabar, Cross River State, Nigeria
| | - Javier Palacios
- Laboratorio de Bioquímica Aplicada, Facultad de Ciencias de la Salud, Universidad Arturo Prat, Iquique, 1110939, Chile
| | - Magdalene Nwokocha
- Department of Pathology, Faculty of Medical Sciences, University of the West Indies, Mona Campus, Kingston, Jamaica
| | - Jorge Bórquez
- Laboratorio de Productos Naturales, Departamento de Química, Facultad Ciencias Básicas, Universidad de Antofagasta, Casilla 170, Antofagasta, Chile
| | - Mario J Simirgiotis
- Instituto de Farmacia, Facultad de Ciencias, Universidad Austral de Chile, Casilla 567, Valdivia, 5090000, Chile
| | - Chukwuemeka R Nwokocha
- Department of Basic Medical Sciences, Faculty of Medical Sciences, University of the West Indies, Mona Campus, Kingston, Jamaica
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Dai Y, Sun L, Tan Y, Xu W, Liu S, Zhou J, Hu Y, Lin J, Yao X, Mi P, Zheng X. Recent progress in the development of ursolic acid derivatives as anti-diabetes and anti-cardiovascular agents. Chem Biol Drug Des 2023; 102:1643-1657. [PMID: 37705131 DOI: 10.1111/cbdd.14347] [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: 05/29/2023] [Revised: 08/20/2023] [Accepted: 08/30/2023] [Indexed: 09/15/2023]
Abstract
Ursolic acid (UA) is a pentacyclic triterpenoid, which exhibits many biological activities, particularly in anti-cardiovascular and anti-diabetes. The further application of UA is greatly limited due to its low bioavailability and poor water solubility. Up to date, various UA derivatives have been designed to overcome these shortcomings. In this paper, the authors reviewed the development of UA derivatives as the anti-diabetes anti-cardiovascular reagents.
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Affiliation(s)
- Yili Dai
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Linjun Sun
- Department of Pharmacy, Hunan Vocational College of Science and Technology, Changsha, China
| | - Yan Tan
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Wenyu Xu
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Shu Liu
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Jing Zhou
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Yalin Hu
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Jieying Lin
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Xu Yao
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Pengbing Mi
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
| | - Xing Zheng
- Institute of Pharmacy and Pharmacology, Hengyang Medicinal School, University of South China, Hengyang, China
- Department of Pharmacy, Hunan Vocational College of Science and Technology, Changsha, China
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Meng YQ, Wang ZQ, Li JM, Xu DP, Meng BB, Huang MQ. Synthesis and anti-tumor activity of asiatic acid derivatives targeting VEGFR. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2023; 25:1205-1216. [PMID: 37081794 DOI: 10.1080/10286020.2023.2202855] [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: 02/21/2023] [Accepted: 04/10/2023] [Indexed: 05/03/2023]
Abstract
To discovery novel VEGFR inhibitors, 12 novel asiatic acid derivatives were designed by computer-aided drug design (CADD) technology. Then, these novel asiatic acid derivatives were synthesized by introducing active groups at ring A and C-28 positions of asiatic acid. The structures of these novel analogues were confirmed by NMR and MS. Moreover, the anti-tumor activities of these novel asiatic acid derivatives on human hepatoma cells HepG2 and human gastric cancer cells SGC7901 were evaluated by MTT assay. As a result, compounds I2 and II4 showed stronger cytotoxicity on tumor cells than asiatic acid and positive control drugs such as gefitinib and paclitaxel. In conclusion, our study synthesized twelve novel asiatic acid derivatives and determined compounds I2 and II4 had better anti-tumor effect which may be potential candidate compounds for tumor therapy.
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Affiliation(s)
- Yan-Qiu Meng
- Department of Pharmaceutical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Zhi-Qi Wang
- Department of Pharmaceutical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Jin-Ming Li
- Department of Pharmaceutical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Dong-Ping Xu
- Department of Pharmaceutical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Bei-Bei Meng
- Department of Pharmaceutical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Mei-Qi Huang
- Department of Pharmaceutical Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
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Hu J, Qi Q, Zhu Y, Wen C, Olatunji OJ, Jayeoye TJ, Eze FN. Unveiling the anticancer, antimicrobial, antioxidative properties, and UPLC-ESI-QTOF-MS/ GC–MS metabolite profile of the lipophilic extract of siam weed (Chromolaena odorata). ARAB J CHEM 2023. [DOI: 10.1016/j.arabjc.2023.104834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023] Open
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Ding L, Liu T, Ma J. Neuroprotective mechanisms of Asiatic acid. Heliyon 2023; 9:e15853. [PMID: 37180926 PMCID: PMC10172897 DOI: 10.1016/j.heliyon.2023.e15853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 04/06/2023] [Accepted: 04/24/2023] [Indexed: 05/16/2023] Open
Abstract
Asiatic acid (AA) is the most crucial component of Asiaticoside in many edible and medicinal plants. It has diverse biological activities such as anti-inflammatory, antioxidant, anti-infective, and anti-tumor. Additionally, AA has been intensively studied in the last decades. It has shown great potential in the treatment of various neurological diseases such as spinal cord injury (SCI), cerebral ischemia, epilepsy, traumatic brain injury (TBI), neural tumors, Alzheimer's disease (AD), and Parkinson's disease (PD). Moreover, AA provides pertinent data for neuroprotective signaling pathways, and its substantial neuroprotective ability makes it a novel candidate for developing drugs that target the central nervous system.
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Affiliation(s)
- Liuyun Ding
- Department of Emergency Medicine, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, 215300, China
| | - Tiantian Liu
- Shanghai Seventh's People's Hospital, An Affiliate of Shanghai University of Traditional Chinese Medicine, Shanghai, 200137, China
| | - Jin Ma
- Department of Emergency Medicine, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, 215300, China
- Corresponding author. Department of Emergency Medicine, Affiliated Kunshan Hospital of Jiangsu University, No. 91 Qianjin West Road, Kunshan, 215300, China.
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Li L, Wang W, Xu Q, Huang M. Asiatic acid improves insulin secretion of β cells in type 2 diabetes through TNF- α/Mfn2 pathway. Zhejiang Da Xue Xue Bao Yi Xue Ban 2023; 52:185-194. [PMID: 37283103 PMCID: PMC10409975 DOI: 10.3724/zdxbyxb-2022-0647] [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: 11/17/2022] [Accepted: 01/10/2023] [Indexed: 06/08/2023]
Abstract
OBJECTIVES To investigate the effects and molecular mechanisms of asiatic acid on β-cell function in type 2 diabetes mellitus (T2DM). METHODS The T2DM model was established by high fat diet and streptozotocin injection in ICR mice, and the effects of asiatic acid on glucose regulation were investigated in model mice. The islets were isolated from palmitic acid-treated diabetic mice. ELISA was used to detect the glucose-stimulated insulin secretion, tumor necrosis factor (TNF)-α and interleukin (IL)-6. ATP assay was applied to measure ATP production, and Western blotting was used to detect protein expression of mature β cell marker urocortin (Ucn) 3 and mitofusin (Mfn) 2. The regulatory effects of asiatic acid on glucose-stimulated insulin secretion (GSIS) and Ucn3 expression were also investigated after siRNA interference with Mfn2 or treatment with TNF-α. RESULTS Asiatic acid with the dose of 25 mg·kg-1·d-1 had the best glycemic control in T2DM mice and improved the homeostasis model assessment β index. Asiatic acid increased the expression of Mfn2 and Ucn3 protein and improved the GSIS function of diabetic β cells in vitro and in vivo (both P<0.05). Moreover, it improved the ATP production of islets of T2DM mice in vitro (P<0.05). Interfering Mfn2 with siRNA blocked the up-regulation of Ucn3 and GSIS induced by asiatic acid. Asiatic acid inhibited islet TNF-α content and increased Mfn2 and Ucn3 protein expression inhibited by TNF-α. CONCLUSIONS Asiatic acid improves β cell insulin secretion function in T2DM mice by maintaining the β cell maturity, which may be related to the TNF-α/Mfn2 pathway.
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Affiliation(s)
- Lu Li
- Department of Clinical Pharmacy, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
| | - Wei Wang
- Intensive Critical Care Unit, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Qiang Xu
- Department of Clinical Pharmacy, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China
| | - Mingzhu Huang
- Department of Clinical Pharmacy, the First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China.
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Verma B, Singh C, Singh A. Effect of hydro-alcoholic extract of centella asiatica on streptozotocin induced memory dysfunction in adult zebrafish. CURRENT RESEARCH IN BEHAVIORAL SCIENCES 2021. [DOI: 10.1016/j.crbeha.2021.100059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Qian XP, Zhang XH, Sun LN, Xing WF, Wang Y, Sun SY, Ma MY, Cheng ZP, Wu ZD, Xing C, Chen BN, Wang YQ. Corosolic acid and its structural analogs: A systematic review of their biological activities and underlying mechanism of action. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2021; 91:153696. [PMID: 34456116 DOI: 10.1016/j.phymed.2021.153696] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 07/29/2021] [Accepted: 07/31/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND The corosolic acid (CA), also known as plant insulin, is a pentacyclic triterpenoid extracted from plants such as Lagerstroemia speciosa. It has been shown to have anti-diabetic, anti-inflammatory and anti-tumor effects. Its structural analogs ursolic acid (UA), oleanolic acid (OA), maslinic acid (MA), asiatic acid (AA) and betulinic acid (BA) display similar individual pharmacological activities to those of CA. However, there is no systematic review documenting pharmacological activities of CA and its structural analogues. This study aims to fill this gap in literature. PURPOSE This systematic review aims to summarize the medical applications of CA and its analogues. METHODS A systematic review summarizes and compares the extraction techniques, pharmacokinetic parameters, and pharmacological effects of CA and its structural analogs. Hypoglycemic effect is one of the key inclusion criteria for searching Web of Science, PubMed, Embase and Cochrane databases up to October 2020 without language restrictions. 'corosolic acid', 'ursolic acid', 'oleanolic acid', 'maslinic acid', 'asiatic acid', 'betulinic acid', 'extraction', 'pharmacokinetic', 'pharmacological' were used to extract relevant literature. The PRISMA guidelines were followed. RESULTS At the end of the searching process, 140 articles were selected for the systematic review. Information of CA and five of its structural analogs including UA, OA, MA, AA and BA were included in this review. CA and its structural analogs are pentacyclic triterpenes extracted from plants and they have low solubilities in water due to their rigid scaffold and hydrophobic properties. The introduction of water-soluble groups such as sugar or amino groups could increase the solubility of CA and its structural analogs. Their biological activities and underlying mechanism of action are reviewed and compared. CONCLUSION CA and its structural analogs UA, OA, MA, AA and BA are demonstrated to show activities in lowering blood sugar, anti-inflammation and anti-tumor. Their oral absorption and bioavailability can be improved through structural modification and formulation design. CA and its structural analogs are promising natural product-based lead compounds for further development and mechanistic studies.
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Affiliation(s)
- Xu-Ping Qian
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University & Jiangsu Province Hospital, Nanjing, China; Xuzhou Medical University, Xuzhou, China
| | - Xue-Hui Zhang
- Department of Pharmacy, Jiangsu Shengze Hospital, Nanjing Medical University, Suzhou, China
| | - Lu-Ning Sun
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University & Jiangsu Province Hospital, Nanjing, China
| | - Wei-Fan Xing
- Nanjing Chenxiang Pharmaceutical Research Co. Ltd
| | - Yu Wang
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University & Jiangsu Province Hospital, Nanjing, China
| | - Shi-Yu Sun
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University & Jiangsu Province Hospital, Nanjing, China
| | - Meng-Yuan Ma
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University & Jiangsu Province Hospital, Nanjing, China; Xuzhou Medical University, Xuzhou, China
| | - Zi-Ping Cheng
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University & Jiangsu Province Hospital, Nanjing, China
| | - Zu-Dong Wu
- Nanjing Chenxiang Pharmaceutical Research Co. Ltd
| | - Chen Xing
- Nanjing Chenxiang Pharmaceutical Research Co. Ltd
| | - Bei-Ning Chen
- Department of Chemistry, University of Sheffield, Brookhill, Sheffield S3 7HF, United Kingdom.
| | - Yong-Qing Wang
- Research Division of Clinical Pharmacology, the First Affiliated Hospital of Nanjing Medical University & Jiangsu Province Hospital, Nanjing, China; Department of Pharmacy, Jiangsu Shengze Hospital, Nanjing Medical University, Suzhou, China.
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Actions and Therapeutic Potential of Madecassoside and Other Major Constituents of Centella asiatica: A Review. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11188475] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Centella asiatica is a popular herb well-known for its wide range of therapeutic effects and its use as a folk medicine for many years. Its therapeutic properties have been well correlated with the presence of asiaticoside, madecassoside, asiatic and madecassic acids, the pentacyclic triterpenes. The herb has been extensively known to treat skin conditions; nevertheless, several pre-clinical and clinical studies have scientifically demonstrated its effectiveness in other disorders. Among the active constituents that have been identified in Centella asiatica, madecassoside has been the subject of only a relatively small number of scientific reports. Therefore, this review, while including other major constituents of this plant, focuses on the therapeutic potential, pharmacokinetics and toxicity of madecassoside.
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Herbal Medicines Targeting the Improved β-Cell Functions and β-Cell Regeneration for the Management of Diabetes Mellitus. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:2920530. [PMID: 34335803 PMCID: PMC8298154 DOI: 10.1155/2021/2920530] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 07/05/2021] [Indexed: 12/12/2022]
Abstract
There is an increasing trend of investigating natural bioactive compounds targeting pancreatic β-cells for the prevention/treatment of diabetes mellitus (DM). With the exploration of multiple mechanisms by which β-cells involve in the pathogenesis of DM, herbal medicines are gaining attention due to their multitasking ability as evidenced by traditional medicine practices. This review attempts to summarize herbal medicines with the potential for improvement of β-cell functions and regeneration as scientifically proven by in vivo/in vitro investigations. Furthermore, attempts have been made to identify the mechanisms of improving the function and regeneration of β-cells by herbal medicines. Relevant data published from January 2009 to March 2020 were collected by searching electronic databases “PubMed,” “ScienceDirect,” and “Google Scholar” and studied for this review. Single herbal extracts, polyherbal mixtures, and isolated compounds derived from approximately 110 medicinal plants belonging to 51 different plant families had been investigated in recent years and found to be targeting β-cells. Many herbal medicines showed improvement of β-cell function as observed through homeostatic model assessment-β-cell function (HOMA-β). Pancreatic β-cell regeneration as observed in histopathological and immunohistochemical studies in terms of increase of size and number of functional β-cells was also prominent. Increasing β-cell mass via expression of genes/proteins related to antiapoptotic actions and β-cell neogenesis/proliferation, increasing glucose-stimulated insulin secretion via activating glucose transporter-2 (GLUT-2) receptors, and/or increasing intracellular Ca2+ levels were observed upon treatment of some herbal medicines. Some herbal medicines acted on various insulin signaling pathways. Furthermore, many herbal medicines showed protective effects on β-cells via reduction of oxidative stress and inflammation. However, there are many unexplored avenues. Thus, further investigations are warranted in elucidating mechanisms of improving β-cell function and mass by herbal medicines, their structure-activity relationship (SAR), and toxicities of these herbal medicines.
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Eze FN, Jayeoye TJ. Chromolaena odorata (Siam weed): A natural reservoir of bioactive compounds with potent anti-fibrillogenic, antioxidative, and cytocompatible properties. Biomed Pharmacother 2021; 141:111811. [PMID: 34153847 DOI: 10.1016/j.biopha.2021.111811] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/20/2021] [Accepted: 06/07/2021] [Indexed: 12/13/2022] Open
Abstract
Protein fibrillation and oxidative damage are closely associated with the development of many chronic diseases such as Alzheimer's disease, Parkinson's disease and transthyretin amyloidoses. This work aimed at evaluating the fibrillogenic, antioxidant, anti-oxidative, hemolytic and cytotoxic activities of phenolic-rich extract from Chromolaena odorata (L) R.M. King & H. Rob aerial parts (COPE). As revealed by Thioflavin-T fluorescence, transmission electron microscopy, NBT redox cycling and ANS fluorescence analyses, COPE suppressed the fibril formation of hen egg-white lysozyme by directly binding to the protein and preventing surface exposure its of hydrophobic clusters. In addition, COPE demonstrated potent radical scavenging activities against DPPH˙ and ABTS˙+, chelated ferrous ions, and inhibited metal-catalyzed oxidation of bovine serum albumin. The observed effects could be explained by the high content of flavonoids (22.82 QE/g) and phenolics (190 mg GAE/g) present in COPE. UHPLC-ESI-QTOF-MS/MS analysis of COPE in negative ionization mode revealed that the predominant compounds were phenolics and terpenoids. Furthermore, COPE was found to exert very minimal cytotoxic effects against human red blood cells (≤ 5% hemolysis) and human embryonic kidney (HEK-293) cells (≥ 80% viability). These findings suggested that with further investigations, phenolic-rich extract from C odorata could be effectively valorized for pharmacological applications against protein fibrillogenic and oxidative damage related conditions.
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Affiliation(s)
- Fredrick Nwude Eze
- Drug Delivery Systems Excellence Center, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand; Faculty of Pharmaceutical Sciences, Prince of Songkla University, Hat Yai, Songkhla 90110 Thailand.
| | - Titilope John Jayeoye
- Department of Chemistry, Faculty of Physical Sciences, Alex-Ekwueme Federal University, Ndufu-Alike Ikwo, Ebonyi State, Nigeria.
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Ranjith GP, Jisha S, Hemanthakumar AS, Saji CV, Shenoi RA, Sabu KK. Impact of potential stimulants on asiaticoside and madecassoside levels and expression of triterpenoid-related genes in axenic shoot cultures of Centella asiatica (L.) Urb. PHYTOCHEMISTRY 2021; 186:112735. [PMID: 33839454 DOI: 10.1016/j.phytochem.2021.112735] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 03/07/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
The triterpenoid saponins, asiaticoside and madecassoside from Centella asiatica (L.) Urb. are known to have a wide range of applications in pharmaceutical and cosmetic industries. The effect of addition of Potential Metabolite Stimulants (PMSs) - casein acid hydrolysate, meat peptone, salicylic acid, copper sulphate, and silver nitrate, on the concentrations of these saponins and transcript levels of associated genes encoding important biosynthetic enzymes, was assessed in axenic shoot cultures of C. asiatica. Among the stimulants, silver nitrate induced asiaticoside content approximately 6-fold increase in madecassoside levels, after three weeks post-treatment with a decrease in biomass compared to its control. Gene expression analysis of essential genes involved in triterpenoid synthesis such as β-amyrin synthase showed an upregulation of approximately 50-fold at the third week of silver nitrate treatment compared to control. These findings suggest that silver nitrate can act as a metabolite stimulant, to enhance the formation of triterpenoids in axenic shoot culture of C. asiatica, which could be utilized in studying the regulation of terpenoid biosynthesis and biotechnological application for the increased production of these bioactive molecules.
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Affiliation(s)
- Gouri Priya Ranjith
- Division of Biotechnology and Bioinformatics, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Thiruvananthapuram, 695562, Kerala, India
| | - S Jisha
- Division of Biotechnology and Bioinformatics, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Thiruvananthapuram, 695562, Kerala, India
| | - Achutan Sudarsanan Hemanthakumar
- Division of Biotechnology and Bioinformatics, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Thiruvananthapuram, 695562, Kerala, India
| | - Chinthu V Saji
- Inter University Centre for Biomedical Research & Super Speciality Hospital, Mahatma Gandhi University Campus, Kottayam, 686009, Kerala, India
| | - Rajesh A Shenoi
- Inter University Centre for Biomedical Research & Super Speciality Hospital, Mahatma Gandhi University Campus, Kottayam, 686009, Kerala, India
| | - Kallevettankuzhy Krishnannair Sabu
- Division of Biotechnology and Bioinformatics, Jawaharlal Nehru Tropical Botanic Garden and Research Institute, Thiruvananthapuram, 695562, Kerala, India.
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Torbati FA, Ramezani M, Dehghan R, Amiri MS, Moghadam AT, Shakour N, Elyasi S, Sahebkar A, Emami SA. Ethnobotany, Phytochemistry and Pharmacological Features of Centella asiatica: A Comprehensive Review. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1308:451-499. [PMID: 33861456 DOI: 10.1007/978-3-030-64872-5_25] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Centella asiatica (CA) or Gotu cola is an herbal plant from the Apiaceae family with a long history of usage in different traditional medicines. It has long been used for the treatment of various ailments such as central nervous system (CNS), skin and gastrointestinal disorders especially in the Southeast Asia. This chapter focused on the phytochemical constituent and pharmacological activities of CA based on preclinical and clinical studies. Additionally, botanical description and distribution, traditional uses, interactions, and safety issues are reviewed. Electronic databases of Google Scholar, Scopus, PubMed, and Web of Science were searched to obtain relevant studies on the pharmacological activities of CA. Approximately, 124 chemical compounds including triterpenoids, polyphenolic compounds, and essential oils have been isolated and identified from CA. Ethnomedicinal applications of CA mostly include treatment of gastrointestinal diseases, wounds, nervous system disorders, circulatory diseases, skin problems, respiratory ailments, diabetes and sleep disorders in various ethnobotanical practices. Pharmacological studies revealed a wide range of beneficial effects of CA on CNS, cardiovascular, lung, liver, kidney, gastrointestinal, skin, and endocrine system. Among them, neuroprotective activity, wound healing and treatment of venous insufficiency, as well as antidiabetic activity seem to be more frequently reported. At the moment, considering various health benefits of CA, it is marketed as an oral supplement as well as a topical ingredient in some cosmetic products. Additional preclinical studies and particularly randomized controlled trials are needed to clarify the therapeutic roles of CA.
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Affiliation(s)
- Farshad Abedi Torbati
- Department of Clinical Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahin Ramezani
- Nanotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Reza Dehghan
- Department of Clinical Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | | | - Ali Tafazoli Moghadam
- School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Clinical Pharmacy, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Neda Shakour
- Department of Medicinal Chemistry, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Sepideh Elyasi
- Department of Clinical Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
| | - Amirhossein Sahebkar
- Applied Biomedical Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Biotechnology Research Center, Pharmaceutical Technology Institute, Mashhad University of Medical Sciences, Mashhad, Iran.,School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.,Polish Mother's Memorial Hospital Research Institute (PMMHRI), Lodz, Poland
| | - Seyed Ahmad Emami
- Department of Traditional Pharmacy, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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14
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Hasanpour M, Iranshahy M, Iranshahi M. The application of metabolomics in investigating anti-diabetic activity of medicinal plants. Biomed Pharmacother 2020; 128:110263. [DOI: 10.1016/j.biopha.2020.110263] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/08/2020] [Accepted: 05/10/2020] [Indexed: 12/21/2022] Open
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15
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Pentacyclic triterpenoid-rich fraction of the Hardy kiwi (Actinidia arguta) improves brain dysfunction in high fat diet-induced obese mice. Sci Rep 2020; 10:5788. [PMID: 32238886 PMCID: PMC7113284 DOI: 10.1038/s41598-020-62810-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/19/2020] [Indexed: 12/28/2022] Open
Abstract
This study was performed to investigate the effect of the chloroform fraction from Actinidia arguta (CFAA) on cognitive dysfunction in a C57BL/6 mouse model fed a high-fat diet (HFD) for 12 weeks. The CFAA has the protective effect on high glucose-induced neurotoxicity in MC-IXC cell (neuroblastoma cell line). In a C57BL/6 mouse model fed a HFD for 12 weeks, the improved glucose tolerance and cognitive dysfunction were observed in a group ingesting CFAA. In the brain tissue analysis, the impaired cholinergic, antioxidant system and mitochondria functions were improved in the CFAA group. In addition, in a molecular biology study, it was observed that CFAA improves HFD-induced abnormal insulin signaling such as increase of IRS phosphorylation at serine residues and reduction of Akt phosphorylation caused by the increase of JNK phosphorylation and then inhibited apoptosis. In the UPLC Q-TOF/MS analysis, pentacyclic triterpenoids such as asiatic acid (AA), madecassic acid (MA) were identified in CFAA as main compounds. Therefore, these results propose that Actinidia arguta rich in pentacyclic triterpenoids may be effective as preventive matter a therapeutic strategy to improve neurodegenerative disease caused by HFD.
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16
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Gutiérrez G, Giraldo-Dávila D, Combariza MY, Holzgrabe U, Tabares-Guevara JH, Ramírez-Pineda JR, Acín S, Muñoz DL, Montoya G, Balcazar N. Serjanic Acid Improves Immunometabolic Markers in a Diet-Induced Obesity Mouse Model. Molecules 2020; 25:E1486. [PMID: 32218297 PMCID: PMC7181135 DOI: 10.3390/molecules25071486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/11/2020] [Accepted: 03/16/2020] [Indexed: 02/06/2023] Open
Abstract
Plant extracts from Cecropia genus have been used by Latin-American traditional medicine to treat metabolic disorders and diabetes. Previous reports have shown that roots of Cecropia telenitida that contains serjanic acid as one of the most prominent and representative pentacyclic triterpenes. The study aimed to isolate serjanic acid and evaluate its effect in a prediabetic murine model by oral administration. A semi-pilot scale extraction was established and serjanic acid purification was followed using direct MALDI-TOF analysis. A diet induced obesity mouse model was used to determine the impact of serjanic acid over selected immunometabolic markers. Mice treated with serjanic acid showed decreased levels of cholesterol and triacylglycerols, increased blood insulin levels, decreased fasting blood glucose and improved glucose tolerance, and insulin sensitivity. At transcriptional level, the reduction of inflammation markers related to adipocyte differentiation is reported.
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Affiliation(s)
- Gustavo Gutiérrez
- Natural Sciences School, Pharmaceutical Sciences Department, Universidad Icesi, 760031 Cali, Colombia;
| | - Deisy Giraldo-Dávila
- School of Chemistry, Industrial University of Santander, 680003 Bucaramanga, Santander, Colombia; (D.G.-D.); (M.Y.C.)
| | - Marianny Y. Combariza
- School of Chemistry, Industrial University of Santander, 680003 Bucaramanga, Santander, Colombia; (D.G.-D.); (M.Y.C.)
| | - Ulrike Holzgrabe
- University of Würzburg, Institute for Pharmacy and Food Chemistry, 97074 Würzburg, Germany;
| | - Jorge Humberto Tabares-Guevara
- Grupo Inmunomodulación, School of Medicine, Universidad de Antioquia, 050010 Medellín, Antioquia, Colombia; (J.H.T.-G.); (J.R.R.-P.)
| | - José Robinson Ramírez-Pineda
- Grupo Inmunomodulación, School of Medicine, Universidad de Antioquia, 050010 Medellín, Antioquia, Colombia; (J.H.T.-G.); (J.R.R.-P.)
- Department of Physiology and Biochemistry, School of Medicine, Universidad de Antioquia, Carrera 51D Nº 62–29, 050010 Medellin, Colombia;
| | - Sergio Acín
- Department of Physiology and Biochemistry, School of Medicine, Universidad de Antioquia, Carrera 51D Nº 62–29, 050010 Medellin, Colombia;
- GENMOL Group. Sede de Investigación Universitaria, Universidad de Antioquia, Calle 62 # 52–59, 050010 Medellín, Colombia;
| | - Diana Lorena Muñoz
- GENMOL Group. Sede de Investigación Universitaria, Universidad de Antioquia, Calle 62 # 52–59, 050010 Medellín, Colombia;
| | - Guillermo Montoya
- Natural Sciences School, Pharmaceutical Sciences Department, Universidad Icesi, 760031 Cali, Colombia;
| | - Norman Balcazar
- Department of Physiology and Biochemistry, School of Medicine, Universidad de Antioquia, Carrera 51D Nº 62–29, 050010 Medellin, Colombia;
- GENMOL Group. Sede de Investigación Universitaria, Universidad de Antioquia, Calle 62 # 52–59, 050010 Medellín, Colombia;
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Dewanjee S, Chakraborty P, Mukherjee B, De Feo V. Plant-Based Antidiabetic Nanoformulations: The Emerging Paradigm for Effective Therapy. Int J Mol Sci 2020; 21:E2217. [PMID: 32210082 PMCID: PMC7139625 DOI: 10.3390/ijms21062217] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 03/10/2020] [Accepted: 03/19/2020] [Indexed: 12/27/2022] Open
Abstract
Diabetes mellitus is a life-threatening metabolic syndrome. Over the past few decades, the incidence of diabetes has climbed exponentially. Several therapeutic approaches have been undertaken, but the occurrence and risk still remain unabated. Several plant-derived small molecules have been proposed to be effective against diabetes and associated vascular complications via acting on several therapeutic targets. In addition, the biocompatibility of these phytochemicals increasingly enhances the interest of exploiting them as therapeutic negotiators. However, poor pharmacokinetic and biopharmaceutical attributes of these phytochemicals largely restrict their clinical usefulness as therapeutic agents. Several pharmaceutical attempts have been undertaken to enhance their compliance and therapeutic efficacy. In this regard, the application of nanotechnology has been proven to be the best approach to improve the compliance and clinical efficacy by overturning the pharmacokinetic and biopharmaceutical obstacles associated with the plant-derived antidiabetic agents. This review gives a comprehensive and up-to-date overview of the nanoformulations of phytochemicals in the management of diabetes and associated complications. The effects of nanosizing on pharmacokinetic, biopharmaceutical and therapeutic profiles of plant-derived small molecules, such as curcumin, resveratrol, naringenin, quercetin, apigenin, baicalin, luteolin, rosmarinic acid, berberine, gymnemic acid, emodin, scutellarin, catechins, thymoquinone, ferulic acid, stevioside, and others have been discussed comprehensively in this review.
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Affiliation(s)
- Saikat Dewanjee
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India;
| | - Pratik Chakraborty
- Advanced Pharmacognosy Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India;
| | - Biswajit Mukherjee
- Pharmaceutics Research Laboratory, Department of Pharmaceutical Technology, Jadavpur University, Kolkata 700032, India;
| | - Vincenzo De Feo
- Department of Pharmacy, University of Salerno, 84084 Fisciano, Italy
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18
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Analysis of urinary metabolic alteration in type 2 diabetic rats treated with metformin using the metabolomics of quantitative spectral deconvolution 1H NMR spectroscopy. Microchem J 2020. [DOI: 10.1016/j.microc.2019.104513] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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19
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Raj D, Kielisz P. High-performance thin-layer chromatographic–densitometric determination of the major triterpene saponins and their aglycones from Centella asiatica. JPC-J PLANAR CHROMAT 2019. [DOI: 10.1556/1006.2019.32.1.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Danuta Raj
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Borowska 211a, 50-556 Wroclaw, Poland
| | - Piotr Kielisz
- Department of Pharmacognosy and Herbal Medicines, Wroclaw Medical University, Borowska 211a, 50-556 Wroclaw, Poland
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20
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Mabhida SE, Dludla PV, Johnson R, Ndlovu M, Louw J, Opoku AR, Mosa RA. Protective effect of triterpenes against diabetes-induced β-cell damage: An overview of in vitro and in vivo studies. Pharmacol Res 2018; 137:179-192. [PMID: 30315968 DOI: 10.1016/j.phrs.2018.10.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 08/27/2018] [Accepted: 10/04/2018] [Indexed: 12/14/2022]
Abstract
Accumulative evidence shows that chronic hyperglycaemia is a major factor implicated in the development of pancreatic β-cell dysfunction in diabetic patients. Furthermore, most of these patients display impaired insulin signalling that is responsible for accelerated pancreatic β-cell damage. Indeed, prominent pathways involved in glucose metabolism such as phosphatidylinositol 3-kinase/ protein kinase B (PI3-K/AKT) and 5' AMP-activated protein kinase (AMPK) are impaired in an insulin resistant state. The impairment of this pathway is associated with over production of reactive oxygen species and pro-inflammatory factors that supersede pancreatic β-cell damage. Although several antidiabetic drugs can improve β-cell function by modulating key regulators such as PI3-K/AKT and AMPK, evidence of their β-cell regenerative and protective effect is scanty. As a result, there has been continued exploration of novel antidiabetic therapeutics with abundant antioxidant and antiinflammatory properties that are essential in protecting against β-cell damage. Such therapies include triterpenes, which have displayed robust effects to improve glycaemic tolerance, insulin secretion, and pancreatic β-cell function. This review summarises most relevant effects of various triterpenes on improving pancreatic β-cell function in both in vitro and in vivo experimental models. A special focus falls on studies reporting on the ameliorative properties of these compounds against insulin resistance, oxidative stress and inflammation, the well-known factors involved in hyperglycaemia associated tissue damage.
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Affiliation(s)
- Sihle E Mabhida
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, 3886, South Africa; Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council, Tygerberg, 7505, South Africa.
| | - Phiwayinkosi V Dludla
- Department of Life and Environmental Sciences, Polytechnic University of Marche, Ancona, 60121, Italy; Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council, Tygerberg, 7505, South Africa
| | - Rabia Johnson
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council, Tygerberg, 7505, South Africa; Division of Medical Physiology, Faculty of Health Sciences, Stellenbosch University, Tygerberg, Stellenbosch, South Africa
| | - Musawenkosi Ndlovu
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, 3886, South Africa
| | - Johan Louw
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, 3886, South Africa; Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council, Tygerberg, 7505, South Africa
| | - Andy R Opoku
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, 3886, South Africa
| | - Rebamang A Mosa
- Department of Biochemistry and Microbiology, University of Zululand, KwaDlangezwa, 3886, South Africa
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Xu J, Liu T, Li Y, Yuan C, Ma H, Seeram NP, Liu F, Mu Y, Huang X, Li L. Hypoglycemic and hypolipidemic effects of triterpenoid-enriched Jamun (Eugenia jambolana Lam.) fruit extract in streptozotocin-induced type 1 diabetic mice. Food Funct 2018; 9:3330-3337. [PMID: 29808185 DOI: 10.1039/c8fo00095f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The edible berries of Eugenia jambolana Lam. (known as Jamun) are consumed in various parts of the world. Our previous studies revealed that a triterpenoid-enriched Jamun fruit extract (TJFE) showed beneficial effects on glucose homeostasis in non-diabetic mice. Herein, the anti-diabetic effects of TJFE (100 mg kg-1 by oral gavage for ten days) were evaluated in streptozotocin (STZ)-induced type 1 diabetic mice. TJFE significantly attenuated STZ-induced hyperglycemia and glucose intolerance, suppressed the abnormal elevation of hepatic gluconeogenesis, and improved dyslipidemia in the mice. Histopathology and mechanism-based studies revealed that TJFE preserved the architecture and function of pancreatic islets, attenuated insulin secretion deficiency, enhanced insulin/Akt signaling transduction, reduced lipogenic gene expression, and prevented the abnormal activation of Erk MAPK in the liver tissues of the STZ-induced diabetic mice. The current study adds to previously published data supporting the potential beneficial effects of this edible fruit on diabetes management.
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Affiliation(s)
- Jialin Xu
- Institute of Microbial Pharmaceuticals, College of Life and Health Sciences, Northeastern University, Shenyang 110819, People's Republic of China.
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Nagoor Meeran MF, Goyal SN, Suchal K, Sharma C, Patil CR, Ojha SK. Pharmacological Properties, Molecular Mechanisms, and Pharmaceutical Development of Asiatic Acid: A Pentacyclic Triterpenoid of Therapeutic Promise. Front Pharmacol 2018; 9:892. [PMID: 30233358 PMCID: PMC6131672 DOI: 10.3389/fphar.2018.00892] [Citation(s) in RCA: 90] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2018] [Accepted: 07/23/2018] [Indexed: 12/16/2022] Open
Abstract
Asiatic acid (AA) is a naturally occurring aglycone of ursane type pentacyclic triterpenoids. It is abundantly present in many edible and medicinal plants including Centella asiatica that is a reputed herb in many traditional medicine formulations for wound healing and neuropsychiatric diseases. AA possesses numerous pharmacological activities such as antioxidant and anti-inflammatory and regulates apoptosis that attributes its therapeutic effects in numerous diseases. AA showed potent antihypertensive, nootropic, neuroprotective, cardioprotective, antimicrobial, and antitumor activities in preclinical studies. In various in vitro and in vivo studies, AA found to affect many enzymes, receptors, growth factors, transcription factors, apoptotic proteins, and cell signaling cascades. This review aims to represent the available reports on therapeutic potential and the underlying pharmacological and molecular mechanisms of AA. The review also also discusses the challenges and prospects on the pharmaceutical development of AA such as pharmacokinetics, physicochemical properties, analysis and structural modifications, and drug delivery. AA showed favorable pharmacokinetics and found bioavailable following oral or interaperitoneal administration. The studies demonstrate the polypharmacological properties, therapeutic potential and molecular mechanisms of AA in numerous diseases. Taken together the evidences from available studies, AA appears one of the important multitargeted polypharmacological agents of natural origin for further pharmaceutical development and clinical application. Provided the favorable pharmacokinetics, safety, and efficacy, AA can be a promising agent or adjuvant along with currently used modern medicines with a pharmacological basis of its use in therapeutics.
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Affiliation(s)
- Mohamed Fizur Nagoor Meeran
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | | | - Kapil Suchal
- Department of Pharmacology, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Charu Sharma
- Department of Internal Meicine, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Chandragouda R. Patil
- Department of Pharmacology, R. C. Patel Institute of Pharmaceutical Education and Research, Shirpur, India
| | - Shreesh K. Ojha
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
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Metabolomic analysis and biochemical changes in the urine and serum of streptozotocin-induced normal- and obese-diabetic rats. J Physiol Biochem 2018; 74:403-416. [DOI: 10.1007/s13105-018-0631-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 04/23/2018] [Indexed: 01/02/2023]
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24
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Xia X, Dai C, Yu H, Huang X, Chen A, Tan Y, Wang L. Asiatic acid prevents the development of interstitial lung disease in a hypochlorous acid-induced mouse model of scleroderma. Oncol Lett 2018; 15:8711-8716. [PMID: 29805609 DOI: 10.3892/ol.2018.8412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Accepted: 02/15/2018] [Indexed: 12/15/2022] Open
Abstract
Interstitial lung disease is the most common complication of systemic sclerosis (SSc) and is associated with a high rate of mortality. Due to the complex pathogenesis of SSc, the therapies currently available remain limited. In the present study, the effect of asiatic acid (AA) on SSc-associated pulmonary fibrosis (PF) and its association with the transforming growth factor-β1 (TGF-β1)/Smad2/3 signaling pathway were evaluated. A hypochlorous acid (HOCl)-induced model of SSc was used to evaluate the therapeutic effect of AA on PF in SSc, where AA was administered to SSc mice by gavage. PF was alleviated in the AA-treated SSc mice groups when examined under light microscopy. In addition, there was a decrease in histopathological progression and collagen in the lungs. AA significantly reduced expression of type I collagen in the lungs of mice with SSc. It also significantly suppressed α-smooth muscle actin expression, which attenuated the conversion of fibroblasts into muscle fibroblasts. These AA-associated antifibrosis and anti-immune effects were mediated through the significant downregulation of advanced oxidation protein product, E-selectin, and anti-DNA topoisomerase-1 autoantibody levels in the serum. Furthermore, the expression levels of TGF-β1 and the phosphorylated-Smad2/3/Smad2/3 ratios in AA-treated SSc mice were similar to the control. The presence of pulmonary inflammation and fibrosis was confirmed in the HOCl-induced SSc mice and the results demonstrated that selective inhibition of reactive oxygen species prevented PF. By focusing on the classical TGF-β1/Smad2/3 signaling pathway, a mechanism of action of AA was identified to be associated with the inhibition of Smad2/3 activation through negative regulation of Smad2/3 phosphorylation.
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Affiliation(s)
- Xiaoru Xia
- Department of Rheumatology, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Caijun Dai
- Department of Respiratory Medicine, Jinhua Municipal Central Hospital, Zhejiang University Jinhua Hospital, Jinhua, Zhejiang 321000, P.R. China
| | - Hua Yu
- Department of Geriatric Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Xiaoying Huang
- Department of Pulmonary Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Ali Chen
- Department of Pulmonary Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Yingxia Tan
- Central Laboratory, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Liangxing Wang
- Department of Pulmonary Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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Lv J, Sharma A, Zhang T, Wu Y, Ding X. Pharmacological Review on Asiatic Acid and Its Derivatives: A Potential Compound. SLAS Technol 2018; 23:111-127. [PMID: 29361877 DOI: 10.1177/2472630317751840] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Natural triterpenes represent a group of pharmacologically active and structurally diverse organic compounds. The focus on these phytochemicals has been enormous in the past few years, worldwide. Asiatic acid (AA), a naturally occurring pentacyclic triterpenoid, is found mainly in the traditional medicinal herb Centella asiatica. Triterpenoid saponins, which are the primary constituents of C. asiatica, are commonly believed to be responsible for their extensive therapeutic actions. Published research work has described the molecular mechanisms underlying the various biological activities of AA and its derivatives, which vary for each chronic disease. However, a compilation of the various pharmacological properties of AA has not yet been done. Herein, we describe in detail the pharmacological properties of AA and its derivatives that inhibit multiple pathways of intracellular signaling molecules and transcription factors that are involved in the various stages of chronic diseases. Furthermore, the pharmacological activities of AA were compared with two natural compounds: curcumin and resveratrol. This review summarizes the research on AA and its derivatives and helps to provide future directions in the area of drug development.
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Affiliation(s)
- Junwei Lv
- 1 School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Alok Sharma
- 1 School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Ting Zhang
- 1 School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Yuchen Wu
- 1 School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
| | - Xianting Ding
- 1 School of Biomedical Engineering, Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, China
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Siddique AI, Mani V, Renganathan S, Ayyanar R, Nagappan A, Namasivayam N. Asiatic acid abridges pre-neoplastic lesions, inflammation, cell proliferation and induces apoptosis in a rat model of colon carcinogenesis. Chem Biol Interact 2017; 278:197-211. [PMID: 29108773 DOI: 10.1016/j.cbi.2017.10.024] [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: 06/22/2017] [Revised: 10/11/2017] [Accepted: 10/30/2017] [Indexed: 01/06/2023]
Abstract
The utmost aim of this present study was to investigate the anti-inflammatory, antiproliferative and proapoptotic potential of Asiatic acid (AA) on 1,2-dimethylhydrazine (DMH)-induced colon carcinogenesis in experimental rats. Rats were divided into six groups and received modified pellet diet for 32 weeks. Group 1 served as control rats. Group 2 received AA (4 mg/kg b.w. p.o.). Group 3-6 rats received 15 DMH (20 mg/kg b.w., s.c.) injections once a week starting from the 4th week. Besides DMH, rats received AA (4 mg/kg b.w. p.o.) in group 4 starting 2 weeks before carcinogen treatment till the end of the last DMH; group 5 starting 2 days after last DMH till the end of the experiment; and group 6 throughout the experiment. Pre-neoplastic lesions, xenobiotic metabolizing enzymes, inflammation, cell proliferation and apoptotic markers were analysed in our study. Our results ascertained AA supplementation to DMH-exposed rats significantly decreased the incidence of aberrant crypt foci (ACF) and phase I xenobiotic enzymes; and increased the phase II xenobiotic enzymes and mucin content as compared to DMH-alone-exposed rats. Moreover the increased expressions of mast cells, argyrophilic nucleolar organizer regions (AgNORs), proliferating cell nuclear antigen (PCNA) and cyclin D1 observed in the DMH-alone-exposed rats were reverted and were comparable with those of the control rats, when treated with AA. Concordantly AA also induced apoptosis by downregulating the expression of Bcl-2 and upregulating Bax, cytochrome c, caspase-3 and -9 in the DMH-alone-exposed rats. Thus AA was able to inhibit DMH-induced colon carcinogenesis by detoxifying the carcinogen, decreasing the preneoplastic lesions by virtue of its anti-inflammatory, antiproliferative and proapoptotic effects. Therefore our findings suggest that AA could be used as an effective chemopreventive agent against DMH induced colon carcinogenesis.
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Affiliation(s)
- Aktarul Islam Siddique
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India
| | - Vijay Mani
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India
| | - Senbagarani Renganathan
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India
| | - Rajagopal Ayyanar
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India
| | - Ananthi Nagappan
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India
| | - Nalini Namasivayam
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, 608002, Tamil Nadu, India.
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27
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Rameshreddy P, Uddandrao VVS, Brahmanaidu P, Vadivukkarasi S, Ravindarnaik R, Suresh P, Swapna K, Kalaivani A, Parvathi P, Tamilmani P, Saravanan G. Obesity-alleviating potential of asiatic acid and its effects on ACC1, UCP2, and CPT1 mRNA expression in high fat diet-induced obese Sprague-Dawley rats. Mol Cell Biochem 2017; 442:143-154. [PMID: 28993954 DOI: 10.1007/s11010-017-3199-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 10/06/2017] [Indexed: 02/07/2023]
Abstract
The present study evaluated the effects of asiatic acid (AA), a pentacyclic triterpenoid from Centella asiatica on lipid metabolism parameters in a rat model of obesity induced using a high fat diet (HFD) for 42 days. AA (20 mg/kg body weight [BW]) was administered orally once daily for 42 days, and an orlistat-treated group of rats (10 mg/kg BW) was included for comparison. Changes in BW, blood glucose levels, insulin resistance and leptin, adiponectin, amylase, and lipase levels in the blood; lipid profiles of plasma; liver antioxidants levels; and acetyl CoA carboxylase(ACC), uncoupling protein-2 (UCP2), and carnitine palmitoyltransferase-1 (CPT1) mRNA expression were observed in the experimental rats. Our results revealed that AA (20 mg/kg BW), similar to orlistat, reduced the increase in BW; increased bone mineral contents and bone mineral densities; reduced blood glucose levels, insulin resistance, leptin, plasma lipid levels; increased adiponectin, amylase, lipase levels in the blood; showed antioxidant activity; and altered mRNA expression of lipid metabolism-related genes, including ACC, UCP 2, and CPT 1, in the HFD-fed rats. From these results, we concluded that AA possesses significant anti-obesity potential through the suppression of BW gain, lipid lowering action, development of insulin and leptin sensitivity, antioxidant activity, and increased mRNA expression of lipid metabolism-related genes.
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Affiliation(s)
- P Rameshreddy
- Department of Biochemistry, Centre for Biological Sciences, K. S. Rangasamy College of Arts and Science (Autonomous), Namakkal Dt, Tiruchengode, Tamil Nadu, 637215, India
| | - V V Sathibabu Uddandrao
- Department of Biochemistry, Centre for Biological Sciences, K. S. Rangasamy College of Arts and Science (Autonomous), Namakkal Dt, Tiruchengode, Tamil Nadu, 637215, India
| | - Parim Brahmanaidu
- Department of Biotechnology, Vikrama Simhapuri University, Nellore, Andhra Pradesh, 524003, India
| | - S Vadivukkarasi
- Department of Biochemistry, Centre for Biological Sciences, K. S. Rangasamy College of Arts and Science (Autonomous), Namakkal Dt, Tiruchengode, Tamil Nadu, 637215, India
| | - Ramavat Ravindarnaik
- National Centre for Laboratory Animal Sciences, National Institute of Nutrition, Hyderabad, 500007, India
| | - Pothani Suresh
- National Centre for Laboratory Animal Sciences, National Institute of Nutrition, Hyderabad, 500007, India
| | - K Swapna
- Department of Biochemistry, Centre for Biological Sciences, K. S. Rangasamy College of Arts and Science (Autonomous), Namakkal Dt, Tiruchengode, Tamil Nadu, 637215, India
| | - A Kalaivani
- Department of Biochemistry, Centre for Biological Sciences, K. S. Rangasamy College of Arts and Science (Autonomous), Namakkal Dt, Tiruchengode, Tamil Nadu, 637215, India.,Department of Biochemistry, PGP College of Art and Science, Namakkal, Tamil Nadu, 637207, India
| | - Parimi Parvathi
- Department of Biotechnology, Vikrama Simhapuri University, Nellore, Andhra Pradesh, 524003, India
| | - P Tamilmani
- Department of Biochemistry, PGP College of Art and Science, Namakkal, Tamil Nadu, 637207, India
| | - Ganapathy Saravanan
- Department of Biochemistry, Centre for Biological Sciences, K. S. Rangasamy College of Arts and Science (Autonomous), Namakkal Dt, Tiruchengode, Tamil Nadu, 637215, India.
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Sun W, Xu G, Guo X, Luo G, Wu L, Hou Y, Guo X, Zhou J, Xu T, Qin L, Fan Y, Han L, Matsabisa M, Ma X, Liu T. Protective effects of asiatic acid in a spontaneous type 2 diabetic mouse model. Mol Med Rep 2017; 16:1333-1339. [PMID: 28586016 PMCID: PMC5562101 DOI: 10.3892/mmr.2017.6684] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 05/26/2017] [Indexed: 12/17/2022] Open
Abstract
Asiatic acid (AA) has been demonstrated to exhibit anti-diabetic activity. However, the mechanisms and underlying signaling pathways remain to be elucidated. The present study was performed to confirm the protective effect of AA and demonstrate its ability to regulate the phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT)/glycogen synthase kinase-3β (GSK-3β) signaling pathway in db/db mice. Db/db mice fed on a high-fat diet were used to model diabetes mellitus. Modeled mice were divided randomly into the model control, pioglitazone hydrochloride tablet (PH) and AA groups. Age-matched C57 BL/6J mice served as normal controls. Lipid and glucose levels, and glycogen synthesis rates were assessed following treatment. Pathological changes were detected using hematoxylin and eosin staining. Expression of the PI3K/AKT/GSK-3β signaling pathway at the mRNA level was measured using quantitative polymerase chain reaction analysis. The model control group revealed typical characteristics of obesity and diabetes, including high glucose and lipid levels, and decreased glycogen synthesis. Four weeks of treatment with AA or PH ameliorated these abnormalities. AA and PH treatments mitigated the upregulation of PI3K, AKT, insulin receptor, and insulin receptor substrate-1 mRNA expression in modeled mice. Furthermore, AA and PH treatments decreased GSK-3β and glucose-6-phosphatase mRNA expression compared with the normal control group. The results of the present study confirmed that AA possesses anti-diabetic activity in db/db mice. The PI3K/AKT/GSK-3β signaling pathway may mediate this protective effect.
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Affiliation(s)
- Wen Sun
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Guangyuan Xu
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Xuan Guo
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Guangbin Luo
- School of Basic Medical Sciences, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Lili Wu
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Yi Hou
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Xiangyu Guo
- Department of Endocrinology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing 100078, P.R. China
| | - Jingxin Zhou
- Endocrinology Department, Dongzhimen Hospital, Beijing University of Chinese Medicine, Beijing 101100, P.R. China
| | - Tunhai Xu
- School of Chinese Pharmacy, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Lingling Qin
- Department of Science and Technology, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Yixin Fan
- Department of Science and Technology, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Li Han
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
| | - Motlalepula Matsabisa
- School of Natural Medicine, University of The Western Cape, Cape Town 7535, South Africa
| | - Xuesheng Ma
- School of Natural Medicine, University of The Western Cape, Cape Town 7535, South Africa
| | - Tonghua Liu
- Key Laboratory of Health Cultivation of the Ministry of Education, Beijing University of Chinese Medicine, Beijing 100029, P.R. China
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An insight into anti-diabetic properties of dietary phytochemicals. PHYTOCHEMISTRY REVIEWS 2017. [DOI: 10.1007/s11101-017-9496-2] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Siddique AI, Mani V, Arivalagan S, Thomas NS, Namasivayam N. RETRACTED ARTICLE: Asiatic acid attenuates pre-neoplastic lesions, oxidative stress, biotransforming enzymes and histopathological alterations in 1,2-dimethylhydrazine-induced experimental rat colon carcinogenesis. Toxicol Mech Methods 2017; 27:136-150. [DOI: 10.1080/15376516.2016.1273422] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Aktarul Islam Siddique
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
| | - Vijay Mani
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
| | - Sivaranjani Arivalagan
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
| | - Nisha Susan Thomas
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
| | - Nalini Namasivayam
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, India
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Peng CH, Chyau CC, Wang CJ, Lin HT, Huang CN, Ker YB. Abelmoschus esculentus fractions potently inhibited the pathogenic targets associated with diabetic renal epithelial to mesenchymal transition. Food Funct 2016; 7:728-40. [PMID: 26787242 DOI: 10.1039/c5fo01214g] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Although Abelmoschus esculentus (AE) is known for anti-hyperglycemia, few reports have addressed its target. Our recent studies have focused on diabetic renal epithelial to mesenchymal transition (EMT), which plays a critical role in fibrosis that accompanies increasing vimentin and suggested signals DPP-4/AT-1/TGF-β1. This study aimed to investigate whether AE is useful for preventing diabetic renal EMT. We used a succession of extractions and obtained the corresponding fractions F1-F5, each with its own individual properties: F1 inhibits high glucose-stimulated vimentin, AT-1, TGF-β1, and DPP-4, and recovers E-cadherin in tubular cells; F2 decreases high glucose-induced vimentin, AT-1 and DPP-4; F3-F5 do not reduce the expression of vimentin. Chemical analysis revealed that F1 is rich of flavonoid glycosides especially quercetin glucosides, and pentacyclic triterpene ester. F2 contains a large amount of carbohydrates and polysaccharides composed of uronic acid, galactose, glucose, myo-inositol etc. In conclusion, AE has the potential to serve as an adjuvant for diabetic nephropathy, with F1 and F2 especially deserving further investigation and development.
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Affiliation(s)
- Chiung-Huei Peng
- Division of Basic Medical Science, Hungkuang University, No. 1018, Section 6, Taiwan Boulevard, Shalu District, Taichung City 43302, Taiwan
| | - Charng-Cherng Chyau
- Research Institute of Biotechnology, Hungkuang University, No. 1018, Section 6, Taiwan Boulevard, Shalu District, Taichung City 43302, Taiwan
| | - Chau-Jong Wang
- Institute of Biochemistry and Biotechnology, Chung-Shan Medical University, Number 110, Section 1, Chien-Kuo North Road, Taichung 402, Taiwan
| | - Huei-Ting Lin
- Institute of Biochemistry and Biotechnology, Chung-Shan Medical University, Number 110, Section 1, Chien-Kuo North Road, Taichung 402, Taiwan
| | - Chien-Ning Huang
- Department of Internal Medicine, Chung-Shan Medical University Hospital, Number 110, Section 1, Chien-Kuo North Road, Taichung 402, Taiwan and Institute of Medicine, Chung-Shan Medical University, Number 110, Section 1, Chien-Kuo North Road, Taichung 402, Taiwan.
| | - Yaw-Bee Ker
- Department of Food Science and Technology, Hungkuang University, No. 1018, Section 6, Taiwan Boulevard, Shalu District, Taichung City 43302, Taiwan.
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Huang X, Zuo L, Lv Y, Chen C, Yang Y, Xin H, Li Y, Qian Y. Asiatic Acid Attenuates Myocardial Ischemia/Reperfusion Injury via Akt/GSK-3β/HIF-1α Signaling in Rat H9c2 Cardiomyocytes. Molecules 2016; 21:molecules21091248. [PMID: 27657024 PMCID: PMC6273770 DOI: 10.3390/molecules21091248] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 09/13/2016] [Accepted: 09/16/2016] [Indexed: 12/11/2022] Open
Abstract
Myocardial ischemic/reperfusion injury results from severe impairment of coronary blood supply and leads to irreversible cell death, with limited therapeutic possibilities. Asiatic acid is a pentacyclic triterpenoid derived from the tropical medicinal plant Centella asiatica and serves a variety of bioactivities. In this study, we determined the effect of asiatic acid on myocardial ischemia/reperfusion injury and investigated the underlying mechanisms, using an in vitro rat H9c2 cardiomyocytes model of oxygen-glucose deprivation/reoxygenation (OGD/R) injury. Results showed that pre-treatment with asiatic acid significantly augmented cell viability and prevented lactate dehydrogenase (LDH) release in a concentration-dependent manner after OGD/R exposure. Asiatic acid at 10 μM effectively inhibited apoptotic cell death, suppressed the activities of caspase-3 and caspase-9, and reversed Bax/Bcl-2 ratio in hypoxic H9c2 cells. In addition, asiatic acid improved mitochondrial function, as evidenced by reduced reactive oxygen species (ROS) accumulation, enhanced mitochondrial membrane potential and decreased intracellular calcium concentration. Using Western blot assay, we found that asiatic acid promoted the phosphorylation of Akt and subsequent inactivation of glycogen synthase kinase-3β (GSK-3β), and induced the expression of hypoxia-inducible factor 1α (HIF-1α) after OGD/R. The cardioprotective effects of asiatic acid were attenuated by the Akt or HIF-1α inhibitor. Taken together, these data suggested that asiatic acid exerted protective effects against OGD/R-induced apoptosis in cardiomyocytes, at least partly via the Akt/GSK-3β/HIF-1α pathway.
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Affiliation(s)
- Xiang Huang
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Li Zuo
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Yanni Lv
- Department of Pharmacy, The First Affiliated Hospital of Nanchang University, 17 Yongwai Street, Nanchang 330006, China.
| | - Chuqiao Chen
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Yaqin Yang
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Hongbo Xin
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
| | - Yunman Li
- Department of Physiology, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China.
| | - Yisong Qian
- Institute of Translational Medicine, Nanchang University, 1299 Xuefu Avenue, Nanchang 330031, China.
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Metabolic and biochemical changes in streptozotocin induced obese-diabetic rats treated with Phyllanthus niruri extract. J Pharm Biomed Anal 2016; 128:302-312. [DOI: 10.1016/j.jpba.2016.06.003] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 05/31/2016] [Accepted: 06/03/2016] [Indexed: 01/10/2023]
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Anti-Diabetic Activity and Metabolic Changes Induced by Andrographis paniculata Plant Extract in Obese Diabetic Rats. Molecules 2016; 21:molecules21081026. [PMID: 27517894 PMCID: PMC6273188 DOI: 10.3390/molecules21081026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 07/20/2016] [Accepted: 07/28/2016] [Indexed: 12/12/2022] Open
Abstract
Andrographis paniculata is an annual herb and widely cultivated in Southeast Asian countries for its medicinal use. In recent investigations, A. paniculata was found to be effective against Type 1 diabetes mellitus (Type 1 DM). Here, we used a non-genetic out-bred Sprague-Dawley rat model to test the antidiabetic activity of A. paniculata against Type 2 diabetes mellitus (Type 2 DM). Proton Nuclear Magnetic Resonance (1H-NMR) spectroscopy in combination with multivariate data analyses was used to evaluate the A. paniculata and metformin induced metabolic effects on the obese and obese–diabetic (obdb) rat models. Compared to the normal rats, high levels of creatinine, lactate, and allantoin were found in the urine of obese rats, whereas, obese-diabetic rats were marked by high glucose, choline and taurine levels, and low lactate, formate, creatinine, citrate, 2-oxoglutarate, succinate, dimethylamine, acetoacetate, acetate, allantoin and hippurate levels. Treatment of A. paniculata leaf water extract was found to be quite effective in restoring the disturbed metabolic profile of obdb rats back towards normal conditions. Thisstudy shows the anti-diabetic potential of A. paniculata plant extract and strengthens the idea of using this plant against the diabetes. Further classical genetic methods and state of the art molecular techniques could provide insights into the molecular mechanisms involved in the pathogenesis of diabetes mellitus and anti-diabetic effects of A. paniculata water extract.
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35
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Wang X, Lu Q, Yu DS, Chen YP, Shang J, Zhang LY, Sun HB, Liu J. Asiatic acid mitigates hyperglycemia and reduces islet fibrosis in Goto-Kakizaki rat, a spontaneous type 2 diabetic animal model. Chin J Nat Med 2016; 13:529-34. [PMID: 26233843 DOI: 10.1016/s1875-5364(15)30047-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Indexed: 12/20/2022]
Abstract
The Goto-Kakizaki (GK) rat is a spontaneous type 2 diabetic animal model, which is characterized by a progressive loss of beta islet cells with fibrosis. In the present study, the hypoglycemic effect of asiatic acid (AA) in GK rats was examined. GK rats receiving AA at a daily dose of 25 mg·kg(-1) for four weeks showed a significant reduction in blood glucose levels. Age-matched normal Wistar rats were given 0.5% sodium carboxymethyl cellulose (CMC-Na) solution for the same periods and used as control. Compared to the normal Wistar rats, GK rats treated with AA showed improvement in insulin resistance partially through decreasing glucose level (P < 0.01) and insulin level (P < 0.05). Furthermore, the results of immunohistochemistry indicate that AA treatment reduced islet fibrosis in GK rats. Fibronectin, a key protein related to islet fibrosis, was over-expressed in GK rats, which was reversed significantly by AA treatment (P < 0.05). These findings suggest that AA has a beneficial effect on lowering blood glucose levels in GK rats and improves fibrosis of islets in diabetes, which may play a role in the prevention of islets dysfunction.
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Affiliation(s)
- Xue Wang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Qian Lu
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Dong-Sheng Yu
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Yu-Peng Chen
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Jing Shang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Lu-Yong Zhang
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Hong-Bin Sun
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China
| | - Jun Liu
- Jiangsu Key Laboratory of Drug Screening, China Pharmaceutical University, Nanjing 210009, China.
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36
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Abas F, Khatib A, Perumal V, Suppaiah V, Ismail A, Hamid M, Shaari K, Lajis NH. Metabolic alteration in obese diabetes rats upon treatment with Centella asiatica extract. JOURNAL OF ETHNOPHARMACOLOGY 2016; 180:60-69. [PMID: 26775274 DOI: 10.1016/j.jep.2016.01.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Revised: 12/08/2015] [Accepted: 01/02/2016] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE 'Pegaga' is a traditional Malay remedy for a wide range of complaints. Among the 'pegaga', Centella asiatica has been used as a remedy for diabetes mellitus. Thus, we decided to validate this claim by evaluating the in vivo antidiabetic property of C. asiatica (CA) on T2DM rat model using the holistic (1)H NMR-based metabolomics approach. METHOD In this study, an obese diabetic (mimic of T2DM condition) animal model was developed using Sprague-Dawley rats fed with a high-fat diet and induced into diabetic condition by the treatment of a low dose of streptozotocin (STZ). The effect of C. asiatica extract on the experimental animals was followed based on the changes observed in the urinary and serum metabolites, measured by (1)H NMR of urine and blood samples collected over the test period. RESULTS A long-term treatment of obese diabetic rats with CA extract could reverse the glucose and lipid levels, as well as the tricarboxylic acid cycle and amino acid metabolic disorders, back towards normal states. Biochemical analysis also showed an increase of insulin production in diabetic rats upon treatment of CA extract. CONCLUSION This study has provided evidence that clearly supported the traditional use of CA as a remedy for diabetes. NMR-based metabolomics was successfully applied to show that CA produced both anti-hyperglycemic and anti-hyperlipidemic effects on a rat model. In addition to increasing the insulin secretion, the CA extract also ameliorates the metabolic pathways affected in the induced diabetic rats. This study further revealed the potential usage of CA extract in managing diabetes mellitus and the results of this work may contribute towards the further understanding of the underlying molecular mechanism of this herbal remedy.
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Affiliation(s)
- F Abas
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia; Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - A Khatib
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, International Islamic University Malaysia, Kuantan 25200, Pahang, Malaysia
| | - V Perumal
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - V Suppaiah
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - A Ismail
- Department of Nutrition and Dietetics, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - M Hamid
- Department of Microbiology, Faculty of Biotechnology and Biomolecular Sciences, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - K Shaari
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
| | - N H Lajis
- Laboratory of Natural Products, Institute of Bioscience, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia; Al-Moalim BinLaden Chair for Scientific Miracles of Prophetic Medicine, Scientific Chairs Unit, Taibah University, P.O. Box 30001, Madinah al Munawarah 41311, Saudi Arabia.
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Nataraj J, Manivasagam T, Justin Thenmozhi A, Essa MM. Neuroprotective effect of asiatic acid on rotenone-induced mitochondrial dysfunction and oxidative stress-mediated apoptosis in differentiated SH-SYS5Y cells. Nutr Neurosci 2016; 20:351-359. [PMID: 26856988 DOI: 10.1080/1028415x.2015.1135559] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Parkinson's disease (PD) is a chronic neurodegenerative disease, manifested due to the loss of dopaminergic neurons, which ultimately leads to impaired movement in elderly populations. The pathogenesis of PD is associated with numerous factors including oxidative stress, mitochondrial dysfunction and apoptosis. There is no effective therapy available to cure or halt the progression of this disease still now. Asiatic acid (AA) is a triterpene extracted from Centella asiatica has been reported as an antioxidant and anti-inflammatory agent, that offers neuroprotection against glutamate toxicity. Therefore, in this study, we have investigated the effect of AA in a rotenone (an inhibitor of mitochondrial complex I) induced in vitro model of PD. Following the exposure of SH-SY5Y cells to rotenone, there was a marked overproduction of ROS, mitochondrial dysfunction (as indexed by the decrease in mitochondrial membrane potential) and apoptosis (Hoechst and dual staining, comet assay; expressions of pro-apoptotic and anti-apoptotic indices). Pre-treatment with AA reversed these changes might be due to its antioxidant, mitoprotective and anti-apoptotic properties. However further extensive studies on in vivo models of PD are warranted to prove AA neuroprotective effect before entering into the clinical trial.
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Affiliation(s)
- Jagatheesan Nataraj
- a Department of Biochemistry and Biotechnology , Faculty of Science, Annamalai University , Annamalai Nagar , Tamilnadu 608 002 , India
| | - Thamilarasan Manivasagam
- a Department of Biochemistry and Biotechnology , Faculty of Science, Annamalai University , Annamalai Nagar , Tamilnadu 608 002 , India
| | - Arokiasamy Justin Thenmozhi
- a Department of Biochemistry and Biotechnology , Faculty of Science, Annamalai University , Annamalai Nagar , Tamilnadu 608 002 , India
| | - Musthafa Mohamed Essa
- b Department of Food Science and Nutrition , CAMS, Sultan Qaboos University , Muscat , Oman.,c Ageing and Dementia Research Group , Sultan Qaboos University , Muscat , Oman
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Gonçalves BMF, Salvador JAR, Santos DSM, Marín S, Cascante M. Design, synthesis, and biological evaluation of novel asiatic acid derivatives as potential anticancer agents. RSC Adv 2016. [DOI: 10.1039/c6ra04597a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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39
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Liu WH, Liu TC, Mong MC. Antibacterial effects and action modes of asiatic acid. Biomedicine (Taipei) 2015; 5:16. [PMID: 26280399 PMCID: PMC10723755 DOI: 10.7603/s40681-015-0016-7] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 07/20/2015] [Indexed: 12/17/2023] Open
Abstract
In this study, the antibacterial effects and action modes of asiatic acid against the foodborne bacterial pathogens Escherichia coli O157:H7, Salmonella Typhimurium DT104, Pseudomonas aeruginosa, Listeria monocytogenes, Staphylococcus aureus, Enterococcus faecalis, and Bacillus cereus were examined. Minimal inhibitory concentrations (MICs) of asiatic acid against these bacteria were in the range of 20-40 μg/mL. Minimum bactericidal concentrations of asiatic acid were in the range of 32-52 μg/mL. Asiatic acid at 2X MIC effectively reduced bacterial numbers from 6 log10 to < 2 log10 in all test bacteria within 6 h (P < 0.05). The antibacterial activity of asiatic acid was not affected by heat treatments from 25 to 100°C. Asiatic acid at 1 or 2X MICs caused 40-56% and 71-89% membrane damage in test bacteria within 2 h, respectively In addition, asiatic acid at 1 or 2X MICs led to 1.5-2.4 ppm and 2.9-4.1 ppm K(+) release within 2 hr, respectively. Asiatic acid treatments dose-dependently increased bacterial nucleotide leakage (P < 0.05). After 3 days of storage at 25°C, the addition of asiatic acid dose-dependently inhibited the growth of test bacteria in ground beef (P < 0.05), in which 8 mg asiatic acid treatments led to bacterial levels (log CFU/g) in said ground beef lower than 2. These findings suggest that asiatic acid might be a potent antibacterial agent to prevent food contamination.
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Affiliation(s)
- Wen-Hu Liu
- School of Nutrition, Chung Shan Medical University, 402, Taichung, Taiwan,
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Liu J, Wang X, Chen YP, Mao LF, Shang J, Sun HB, Zhang LY. Maslinic acid modulates glycogen metabolism by enhancing the insulin signaling pathway and inhibiting glycogen phosphorylase. Chin J Nat Med 2015; 12:259-65. [PMID: 24863350 DOI: 10.1016/s1875-5364(14)60052-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Indexed: 10/25/2022]
Abstract
AIM To investigate the molecular signaling mechanism by which the plant-derived, pentacyclic triterpene maslinic acid (MA) exerts anti-diabetic effects. METHOD HepG2 cells were stimulated with various concentrations of MA. The effects of MA on glycogen phosphorylase a (GPa) activity and the cellular glycogen content were measured. Western blot analyses were performed with anti-insulin receptor β (IRβ), protein kinase B (also known as Akt), and glycogen synthase kinase-3β (GSK3β) antibodies. Activation status of the insulin pathway was investigated using phospho-IRβ, as well as phospho-Akt, and phospho-GSK3β antibodies. The specific PI3-kinase inhibitor wortmannin was added to the cells to analyze the Akt expression. Enzyme-linked immunosorbent assay (ELISA) was used to measure the effect of MA on IRβ auto-phosphorylation. Furthermore, the effect of MA on glycogen metabolism was investigated in C57BL/6J mice fed with a high-fat diet (HFD). RESULTS The results showed that MA exerts anti-diabetic effects by increasing glycogen content and inhibiting glycogen phosphorylase activity in HepG2 cells. Furthermore, MA was shown to induce the phosphorylation level of IRβ-subunit, Akt, and GSK3β. The MA-induced activation of Akt appeared to be specific, since it could be blocked by wortmannin. Finally, MA treatment of mice fed with a high-fat diet reduced the model-associated adiposity and insulin resistance, and increased the accumulated hepatic glycogen content. CONCLUSION The results suggested that maslinic acid modulates glycogen metabolism by enhancing the insulin signaling pathway and inhibiting glycogen phosphorylase.
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Affiliation(s)
- Jun Liu
- State Key Laboratory of Natural Medicines, National Drug Screening Center, China Pharmaceutical University, Nanjing 210009, China
| | - Xue Wang
- State Key Laboratory of Natural Medicines, National Drug Screening Center, China Pharmaceutical University, Nanjing 210009, China
| | - Yu-Peng Chen
- State Key Laboratory of Natural Medicines, National Drug Screening Center, China Pharmaceutical University, Nanjing 210009, China
| | - Li-Fei Mao
- State Key Laboratory of Natural Medicines, National Drug Screening Center, China Pharmaceutical University, Nanjing 210009, China
| | - Jing Shang
- State Key Laboratory of Natural Medicines, National Drug Screening Center, China Pharmaceutical University, Nanjing 210009, China
| | - Hong-Bin Sun
- Center for Drug Discovery, College of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, P.R. China.
| | - Lu-Yong Zhang
- State Key Laboratory of Natural Medicines, National Drug Screening Center, China Pharmaceutical University, Nanjing 210009, China.
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Wang X, Chen Y, Abdelkader D, Hassan W, Sun H, Liu J. Combination therapy with oleanolic acid and metformin as a synergistic treatment for diabetes. J Diabetes Res 2015; 2015:973287. [PMID: 25789330 PMCID: PMC4350965 DOI: 10.1155/2015/973287] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 12/13/2014] [Accepted: 12/15/2014] [Indexed: 12/13/2022] Open
Abstract
AIMS AND BACKGROUND Type 2 diabetes is a chronic disease that cannot be treated adequately using the known monotherapies, especially when the disease progresses to an advanced stage. In this study, we explore the possibility of treating the disease with a novel combination approach of oleanolic acid (OA), a glycogen phosphorylase (GP) inhibitor, and metformin. METHODS Db/db mice were randomly divided into four groups: a db/db control group, db/db mice treated with OA (250 mg/kg), db/db mice treated with metformin (100 mg/kg), and db/db mice treated with a combination of OA and metformin. All mice were treated for four weeks. The effects of the treatments on glucose homeostasis were measured using an OGTT, an assessment of insulin sensitivity and signaling in the liver, and the hepatic glucose production. RESULTS Combination therapy with OA and metformin significantly reduced the blood glucose and insulin levels and improved the liver pathology compared with that for the monotherapy in the db/db diabetic mouse model. We also found that the combination therapy significantly increased the mRNA expression of glycogen synthesis and decreased the GP, PGC-1α, PEPCK1, and G-6-Pase levels. In addition, the combination therapy with OA and metformin significantly increased the phosphorylation of AKT, PI3K, AMPK, and ACC and decreased the protein expression levels of G-6-Pase, PEPCK1, and TORC compared with those for either monotherapy. The combination therapy also reduced the phosphorylation of mTOR and CREB. CONCLUSIONS Our results suggest that the combination therapy with OA and metformin has synergistic effects on the symptoms of db/db diabetic mice by improving glucose and insulin homeostasis.
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Affiliation(s)
- Xue Wang
- National Drug Screening Center and Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Yupeng Chen
- National Drug Screening Center and Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Daoud Abdelkader
- National Drug Screening Center and Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Waseem Hassan
- National Drug Screening Center and Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Hongbin Sun
- Center for Drug Discovery, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Jun Liu
- National Drug Screening Center and Jiangsu Key Laboratory of TCM Evaluation and Translational Research, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
- *Jun Liu:
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Nazaruk J, Borzym-Kluczyk M. The role of triterpenes in the management of diabetes mellitus and its complications. PHYTOCHEMISTRY REVIEWS : PROCEEDINGS OF THE PHYTOCHEMICAL SOCIETY OF EUROPE 2014; 14:675-690. [PMID: 26213526 PMCID: PMC4513225 DOI: 10.1007/s11101-014-9369-x] [Citation(s) in RCA: 104] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2013] [Accepted: 06/13/2014] [Indexed: 05/23/2023]
Abstract
Diabetes mellitus is a chronic metabolic disease which is a serious global problem. In 2010 an estimated 285 million people had diabetes and within the next 20 years this value is expected to almost double. Many antidiabetic therapies focus on improving insulin sensitivity, increasing insulin production, and/or decreasing the level of blood glucose. Although a number of synthetic medicines are available, drugs of natural origin have aroused great interest. Triterpenes seem to demonstrate adequate properties. Many experiments have shown that these compounds have several antidiabetic mechanisms. They can inhibit enzymes involved in glucose metabolism, prevent the development of insulin resistance and normalize plasma glucose and insulin levels. These natural compounds, in contrast to synthetic drugs, apart from producing a hypoglycemic effect have also been found to manifest hypolipidemic and anti-obesity activity. Triterpenes are also promising agents in the prevention of diabetic complications. They have strong antioxidant activity and inhibit the formation of advanced glycation end products, implicated in the pathogenesis of diabetic nephropathy, embryopathy, neuropathy or impaired wound healing. Until now very few clinical studies have been concerned with the application of triterpenes in treating diabetes. However, due to their great therapeutic potential, these compounds deserve special attention.
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Affiliation(s)
- J. Nazaruk
- Department of Pharmacognosy, Medical University of Białystok, Mickiewicza 2a Str., 15-089 Białystok, Poland
| | - M. Borzym-Kluczyk
- Department of Pharmaceutical Biochemistry, Medical University of Białystok, Mickiewicza 2a Str., 15-089 Białystok, Poland
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Chan CY, Mong MC, Liu WH, Huang CY, Yin MC. Three pentacyclic triterpenes protect H9c2 cardiomyoblast cells against high-glucose-induced injury. Free Radic Res 2014; 48:402-11. [DOI: 10.3109/10715762.2014.880113] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Asiatic acid alleviates hemodynamic and metabolic alterations via restoring eNOS/iNOS expression, oxidative stress, and inflammation in diet-induced metabolic syndrome rats. Nutrients 2014; 6:355-70. [PMID: 24441717 PMCID: PMC3916866 DOI: 10.3390/nu6010355] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 01/07/2014] [Accepted: 01/07/2014] [Indexed: 11/16/2022] Open
Abstract
Asiatic acid is a triterpenoid isolated from Centella asiatica. The present study aimed to investigate whether asiatic acid could lessen the metabolic, cardiovascular complications in rats with metabolic syndrome (MS) induced by a high-carbohydrate, high-fat (HCHF) diet. Male Sprague-Dawley rats were fed with HCHF diet with 15% fructose in drinking water for 12 weeks to induce MS. MS rats were treated with asiatic acid (10 or 20 mg/kg/day) or vehicle for a further three weeks. MS rats had an impairment of oral glucose tolerance, increases in fasting blood glucose, serum insulin, total cholesterol, triglycerides, mean arterial blood pressure, heart rate, and hindlimb vascular resistance; these were related to the augmentation of vascular superoxide anion production, plasma malondialdehyde and tumor necrosis factor-alpha (TNF-α) levels (p<0.05). Plasma nitrate and nitrite (NOx) were markedly high with upregulation of inducible nitric oxide synthase (iNOS) expression, but dowregulation of endothelial nitric oxide synthase (eNOS) expression (p<0.05). Asiatic acid significantly improved insulin sensitivity, lipid profiles, hemodynamic parameters, oxidative stress markers, plasma TNF-α, NOx, and recovered abnormality of eNOS/iNOS expressions in MS rats (p<0.05). In conclusion, asiatic acid improved metabolic, hemodynamic abnormalities in MS rats that could be associated with its antioxidant, anti-inflammatory effects and recovering regulation of eNOS/iNOS expression.
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Ramachandran V, Saravanan R. Asiatic acid prevents lipid peroxidation and improves antioxidant status in rats with streptozotocin-induced diabetes. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.03.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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Castellano JM, Guinda A, Delgado T, Rada M, Cayuela JA. Biochemical basis of the antidiabetic activity of oleanolic acid and related pentacyclic triterpenes. Diabetes 2013; 62:1791-9. [PMID: 23704520 PMCID: PMC3661625 DOI: 10.2337/db12-1215] [Citation(s) in RCA: 157] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Oleanolic acid (OA), a natural component of many plant food and medicinal herbs, is endowed with a wide range of pharmacological properties whose therapeutic potential has only partly been exploited until now. Throughout complex and multifactorial mechanisms, OA exerts beneficial effects against diabetes and metabolic syndrome. It improves insulin response, preserves functionality and survival of β-cells, and protects against diabetes complications. OA may directly modulate enzymes connected to insulin biosynthesis, secretion, and signaling. However, its major contributions appear to be derived from the interaction with important transduction pathways, and many of its effects are consistently related to activation of the transcription factor Nrf2. Doing that, OA induces the expression of antioxidant enzymes and phase II response genes, blocks NF-κB, and represses the polyol pathway, AGEs production, and hyperlipidemia. The management of type 2 diabetes requires an integrated approach, which includes the early intervention to prevent or delay the disease progression, and the use of therapies to control glycemia and lipidemia in its late stages. In this sense, the use of functional foods or drugs containing OA is, undoubtedly, an interesting path.
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Affiliation(s)
- Jose M Castellano
- Instituto de la Grasa, Consejo Superior de Investigaciones Cientificas, Seville, Spain.
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Ramachandran V, Saravanan R. Efficacy of asiatic acid, a pentacyclic triterpene on attenuating the key enzymes activities of carbohydrate metabolism in streptozotocin-induced diabetic rats. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2013; 20:230-236. [PMID: 23102509 DOI: 10.1016/j.phymed.2012.09.023] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2012] [Revised: 08/13/2012] [Accepted: 09/21/2012] [Indexed: 06/01/2023]
Abstract
Asiatic acid (AA), a triterpenoid derivative of Centella asiatica, has shown significant biological effects of antioxidant and anti-inflammatory activities. Aim of this investigation was to evaluate the antihyperglycemic effect of AA on the activities of hepatic enzymes of carbohydrate metabolism in streptozotocin (STZ)-induced diabetic rats. To induce diabetes mellitus, rats were injected with streptozotocin intraperitoneally at a single dose of 40 mg/kg b.w. Diabetic rats showed significant (p<0.05) increased in plasma glucose, glycosylated hemoglobin and significant (p<0.05) decreased in circulating insulin and hemoglobin. The altered activities of key enzymes such as glucose-6-phosphatase and fructose-1,6-bisphosphatase of carbohydrate metabolism significantly (p<0.05) increased whereas hexokinase, pyruvate kinase, glucose-6-phosphate dehydrogenase and glycogen content significantly (p<0.05) decreased in the liver of diabetic rats and also increased activities of aspartate transaminase (AST), alanine transaminase (ALT) and alkaline phosphatase (ALP). Oral administration of AA (5, 10 and 20 mg/kg b.w.) and glibenclamide (600 μg/kg b.w.) to diabetic rats for 45 days prevented the above alteration and reverted to near normalcy. Protection of body weight loss of diabetic rats by AA was also observed. No significant effect was observed in normal rats treated with AA (20 mg/kg b.w.). In this search, AA found to be potential bioactive compound to regulate the carbohydrate metabolism by modulating the key regulatory enzymes in diabetic rats. These findings merit further research in this field.
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Affiliation(s)
- Vinayagam Ramachandran
- Department of Biochemistry and Biotechnology, Faculty of Science, Annamalai University, Annamalainagar, Tamil Nadu, India
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Guo FF, Feng X, Chu ZY, Li DP, Zhang L, Zhang ZS. Microbial transformation of asiatic acid. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2012; 15:15-21. [PMID: 23227815 DOI: 10.1080/10286020.2012.741124] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Asiatic acid (1), a major pentacyclic triterpene of Centella asiatica, was subjected to transformation by Penicillium lilacinum ACCC 31890, Fusarium equiseti CGMCC 3.3658, and Streptomyces griseus CGMCC 4.18 strains. Incubation of asiatic acid with P. lilacinum ACCC 31890 and F. equiseti CGMCC 3.3658 gave an identical product: 2α,3β,15α,23-tetrahydroxyurs-12-en-28-oic acid (2). Biotransformation of asiatic acid by S. griseus CGMCC 4.18 resulted in three derivatives: 2α,3β,21β,23-tetrahydroxyurs-12-en-28-oic acid (3), 2α,3β,23-trihydroxyurs-12-en-28, 30-dioic acid (4), and 2α,3β,23,30-tetrahydroxyurs-12-en-28-oic acid (5). The structures of those derivatives were deduced from their spectral data. Products (2), (3), and (4) were new compounds. In addition, the in vitro cytotoxicities of those derivatives along with 1 were evaluated with several human cancer cell lines.
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Affiliation(s)
- Fei-Fei Guo
- Tianjin University of Science and Technology, Tianjin 300457, China
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WU QIULING, LV TINGTING, CHEN YAN, WEN LU, ZHANG JUNLI, JIANG XUDONG, LIU FANG. Apoptosis of HL-60 human leukemia cells induced by Asiatic acid through modulation of B-cell lymphoma 2 family proteins and the mitogen-activated protein kinase signaling pathway. Mol Med Rep 2012; 12:1429-34. [DOI: 10.3892/mmr.2015.3534] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Accepted: 02/20/2015] [Indexed: 11/06/2022] Open
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