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Quan Y, Li L, Yin Z, Chen S, Yi J, Lang J, Zhang L, Yue Q, Zhao J. Bulbus Fritillariae Cirrhosae as a Respiratory Medicine: Is There a Potential Drug in the Treatment of COVID-19? Front Pharmacol 2022; 12:784335. [PMID: 35126123 PMCID: PMC8811224 DOI: 10.3389/fphar.2021.784335] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Accepted: 12/03/2021] [Indexed: 01/08/2023] Open
Abstract
Bulbus fritillariae cirrhosae (BFC) is one of the most used Chinese medicines for lung disease, and exerts antitussive, expectorant, anti-inflammatory, anti-asthmatic, and antioxidant effects, which is an ideal therapeutic drug for respiratory diseases such as ARDS, COPD, asthma, lung cancer, and pulmonary tuberculosis. Through this review, it is found that the therapeutic mechanism of BFC on respiratory diseases exhibits the characteristics of multi-components, multi-targets, and multi-signaling pathways. In particular, the therapeutic potential of BFC in terms of intervention of “cytokine storm”, STAT, NF-κB, and MAPK signaling pathways, as well as the renin-angiotensin system (RAS) that ACE is involved in. In the “cytokine storm” of SARS-CoV-2 infection there is an intense inflammatory response. ACE2 regulates the RAS by degradation of Ang II produced by ACE, which is associated with SARS-CoV-2. For COVID-19, may it be a potential drug? This review summarized the research progress of BFC in the respiratory diseases, discussed the development potentiality of BFC for the treatment of COVID-19, explained the chemical diversity and biological significance of the alkaloids in BFC, and clarified the material basis, molecular targets, and signaling pathways of BFC for the respiratory diseases. We hope this review can provide insights on the drug discovery of anti-COVID-19.
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Affiliation(s)
- Yunyun Quan
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
- Department of Pharmacognosy, West China School of Pharmacy Sichuan University, Chengdu, China
| | - Li Li
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
| | - Zhujun Yin
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
| | - Shilong Chen
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
| | - Jing Yi
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
| | - Jirui Lang
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
| | - Lu Zhang
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
| | - Qianhua Yue
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
| | - Junning Zhao
- Translational Chinese Medicine Key Laboratory of Sichuan Province, Sichuan Academy of Chinese Medicine Sciences, Sichuan Institute for Translational Chinese Medicine, Chengdu, China
- Department of Pharmacognosy, West China School of Pharmacy Sichuan University, Chengdu, China
- *Correspondence: Junning Zhao,
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Chakraborty R, Roy S. Angiotensin-converting enzyme inhibitors from plants: A review of their diversity, modes of action, prospects, and concerns in the management of diabetes-centric complications. JOURNAL OF INTEGRATIVE MEDICINE-JIM 2021; 19:478-492. [PMID: 34642085 DOI: 10.1016/j.joim.2021.09.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 06/10/2021] [Indexed: 12/29/2022]
Abstract
Angiotensin-converting enzyme (ACE) inhibitors are antihypertensive medications often used in the treatment of diabetes-related complications. Synthetic ACE inhibitors are known to cause serious side effects like hypotension, renal insufficiency, and hyperkalaemia. Therefore, there has been an intensifying search for natural ACE inhibitors. Many plants or plant-based extracts are known to possess ACE-inhibitory activity. In this review, articles focusing on the natural ACE inhibitors extracted from plants were retrieved from databases like Google Scholar, PubMed, Scopus, and Web of Science. We have found more than 50 plant species with ACE-inhibitory activity. Among them, Angelica keiskei, Momordica charantia, Muntingia calabura, Prunus domestica, and Peperomia pellucida were the most potent, showing comparatively lower half-maximal inhibitory concentration values. Among the bioactive metabolites, peptides (e.g., Tyr-Glu-Pro, Met-Arg-Trp, and Gln-Phe-Tyr-Ala-Val), phenolics (e.g., cyanidin-3-O-sambubioside and delphinidin-3-O-sambubioside), flavonoids ([-]-epicatechin, astilbin, and eupatorin), terpenoids (ursolic acid and oleanolic acid) and alkaloids (berberine and harmaline) isolated from several plant and fungus species were found to possess significant ACE-inhibitory activity. These were also known to possess promising antioxidant, antidiabetic, antihyperlipidemic and anti-inflammatory activities. Considering the minimal side effects and lower toxicity of herbal compounds, development of antihypertensive drugs from these plant extracts or phytocompounds for the treatment of diabetes-associated complications is an important endeavour. This review, therefore, focuses on the ACE inhibitors extracted from different plant sources, their possible mechanisms of action, present status, and any safety concerns.
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Affiliation(s)
- Rakhi Chakraborty
- Department of Botany, A.P.C. Roy Government College, Matigara 734010, West Bengal, India
| | - Swarnendu Roy
- Plant Biochemistry Laboratory, Department of Botany, University of North Bengal, Raja Rammohunpur 734011, West Bengal, India.
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Wang Y, Hou H, Ren Q, Hu H, Yang T, Li X. Natural drug sources for respiratory diseases from Fritillaria: chemical and biological analyses. Chin Med 2021; 16:40. [PMID: 34059098 PMCID: PMC8165352 DOI: 10.1186/s13020-021-00450-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 05/19/2021] [Indexed: 02/07/2023] Open
Abstract
Fritillaria naturally grows in the temperate region of Northern Hemisphere and mainly distributes in Central Asia, Mediterranean region, and North America. The dried bulbs from a dozen species of this genus have been usually used as herbal medicine, named Beimu in China. Beimu had rich sources of phytochemicals and have extensively applied to respiratory diseases including coronavirus disease (COVID-19). Fritillaria species have alkaloids that act as the main active components that contribute multiple biological activities, including anti-tussive, expectorant, and anti-asthmatic effects, especially against certain respiratory diseases. Other compounds (terpenoids, steroidal saponins, and phenylpropanoids) have also been identified in species of Fritillaria. In this review, readers will discover a brief summary of traditional uses and a comprehensive description of the chemical profiles, biological properties, and analytical techniques used for quality control. In general, the detailed summary reveals 293 specialized metabolites that have been isolated and analyzed in Fritillaria species. This review may provide a scientific basis for the chemical ecology and metabolomics in which compound identification of certain species remains a limiting step.
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Affiliation(s)
- Ye Wang
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No 16, Neinanxiao Street, Dongcheng District, Beijing, 100700, China
| | - Hongping Hou
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No 16, Neinanxiao Street, Dongcheng District, Beijing, 100700, China
| | - Qiang Ren
- Department of Pharmacy, Jining Medical University, Rizhao, 272000, China
| | - Haoyu Hu
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No 16, Neinanxiao Street, Dongcheng District, Beijing, 100700, China
| | - Tiechui Yang
- Nin Jiom Medicine Manufactory (Hong Kong) Limited, Hong Kong, 999077, China
| | - Xiwen Li
- Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, No 16, Neinanxiao Street, Dongcheng District, Beijing, 100700, China.
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de Souza P, da Silva LM, de Andrade SF, Gasparotto Junior A. Recent Advances in the Knowledge of Naturally-derived Bioactive Compounds as Modulating Agents of the Renin-angiotensin-aldosterone System: Therapeutic Benefits in Cardiovascular Diseases. Curr Pharm Des 2020; 25:670-684. [PMID: 30931846 DOI: 10.2174/1381612825666190329122443] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/25/2019] [Indexed: 01/03/2023]
Abstract
BACKGROUND One of the biggest challenges to public health worldwide is to reduce the number of events and deaths related to the cardiovascular diseases. Numerous approaches have been applied to reach this goal, and drug treatment intervention has been indispensable along with an effective strategy for reducing both cardiovascular morbidity and mortality. Renin-angiotensin-aldosterone system (RAAS) blockade is currently one of the most important targets of cardiovascular drug therapy. Many studies have proven the valuable properties of naturally-derived bioactive compounds to treat cardiovascular diseases. METHODS The goal of this review, therefore, is to discuss the recent developments related to medicinal properties about natural compounds as modulating agents of the RAAS, which have made them an attractive alternative to be available to supplement the current therapy options. RESULTS Data has shown that bioactive compounds isolated from several natural products act either by inhibiting the angiotensin-converting enzyme or directly by modulating the AT1 receptors of angiotensin II, which consequently changes the entire classical axis of this system. CONCLUSION While there are a few evidence about the positive actions of different classes of secondary metabolites for the treatment of cardiovascular and renal diseases, data is scarce about the clinical assays established to demonstrate their value in humans.
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Affiliation(s)
- Priscila de Souza
- Programa de Pos-Graduacao em Ciencias Farmaceuticas, Nucleo de Investigacoes Quimico-Farmaceuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI), Rua Uruguai, 458, 88302-901 Itajai, SC, Brazil
| | - Luisa M da Silva
- Programa de Pos-Graduacao em Ciencias Farmaceuticas, Nucleo de Investigacoes Quimico-Farmaceuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI), Rua Uruguai, 458, 88302-901 Itajai, SC, Brazil
| | - Sérgio F de Andrade
- Programa de Pos-Graduacao em Ciencias Farmaceuticas, Nucleo de Investigacoes Quimico-Farmaceuticas (NIQFAR), Universidade do Vale do Itajai (UNIVALI), Rua Uruguai, 458, 88302-901 Itajai, SC, Brazil
| | - Arquimedes Gasparotto Junior
- Laboratorio de Eletrofisiologia e Farmacologia Cardiovascular, Faculdade de Ciencias da Saude, Universidade Federal da Grande Dourados, Dourados, MS, Brazil
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Abuduwaili A, Rozi P, Mutailifu P, Gao Y, Nuerxiati R, Aisa HA, Yili A. Effects of different extraction techniques on physicochemical properties and biological activities of polysaccharides from Fritillaria pallidiflora Schrenk. Process Biochem 2019. [DOI: 10.1016/j.procbio.2019.05.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Megastigmane glycosides from leaves of Eucommia ulmoides Oliver with ACE inhibitory activity. Fitoterapia 2017; 116:121-125. [DOI: 10.1016/j.fitote.2016.12.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 11/26/2016] [Accepted: 12/01/2016] [Indexed: 11/18/2022]
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Patten GS, Abeywardena MY, Bennett LE. Inhibition of Angiotensin Converting Enzyme, Angiotensin II Receptor Blocking, and Blood Pressure Lowering Bioactivity across Plant Families. Crit Rev Food Sci Nutr 2016; 56:181-214. [PMID: 24915402 DOI: 10.1080/10408398.2011.651176] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Hypertension is a major risk factor for coronary heart disease, kidney disease, and stroke. Interest in medicinal or nutraceutical plant bioactives to reduce hypertension has increased dramatically. The main biological regulation of mammalian blood pressure is via the renin-angiotensin-aldosterone system. The key enzyme is angiotensin converting enzyme (ACE) that converts angiotensin I into the powerful vasoconstrictor, angiotensin II. Angiotensin II binds to its receptors (AT1) on smooth muscle cells of the arteriole vasculature causing vasoconstriction and elevation of blood pressure. This review focuses on the in vitro and in vivo reports of plant-derived extracts that inhibit ACE activity, block angiotensin II receptor binding and demonstrate hypotensive activity in animal or human studies. We describe 74 families of plants that exhibited significant ACE inhibitory activity and 16 plant families with potential AT1 receptor blocking activity, according to in vitro studies. From 43 plant families including some of those with in vitro bioactivity, the extracts from 73 plant species lowered blood pressure in various normotensive or hypertensive in vivo models by the oral route. Of these, 19 species from 15 families lowered human BP when administered orally. Some of the active plant extracts, isolated bioactives and BP-lowering mechanisms are discussed.
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Affiliation(s)
- Glen S Patten
- a CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences , Adelaide , South Australia , Australia
| | - Mahinda Y Abeywardena
- a CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences , Adelaide , South Australia , Australia
| | - Louise E Bennett
- b CSIRO Preventative Health National Research Flagship, Animal, Food and Health Sciences, Werribee , Victoria , British Columbia , Australia
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Bai RR, Wu XM, Xu JY. Current natural products with antihypertensive activity. Chin J Nat Med 2016; 13:721-9. [PMID: 26481372 DOI: 10.1016/s1875-5364(15)30072-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Indexed: 10/22/2022]
Abstract
Natural products have been an important source of new drugs, which also played a dominant role in the discovery and research of new drugs for the treatment of hypertension. This review article reviews the recent progress in the research and development of natural lead compounds with antihypertensive activity, including alkaloids, diterpenes, coumarins, flavonoids, and peptides. We summarized their structures, sources, as well as the antihypertensive mechanisms. These information provides instructive reference for the following structural modifications and optimization.
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Affiliation(s)
- Ren-Ren Bai
- School of Medicine, Emory University, Atlanta 30322, GA, USA; Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China
| | - Xiao-Ming Wu
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
| | - Jin-Yi Xu
- Department of Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China; State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 210009, China.
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Pan BF, Su X, Hu B, Yang N, Chen Q, Wu W. Fusarium redolens 6WBY3, an endophytic fungus isolated from Fritillaria unibracteata var. wabuensis, produces peimisine and imperialine-3β-D-glucoside. Fitoterapia 2015; 103:213-21. [PMID: 25869849 DOI: 10.1016/j.fitote.2015.04.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 04/03/2015] [Accepted: 04/06/2015] [Indexed: 10/23/2022]
Abstract
The major biological active ingredients of Bulbus Fritillariae cirrhosae (BFC) are steroidal alkaloids, such as peimisine, imperialine-3β-D-glucoside, and peimine. The bulbus of Fritillaria unibracteata var. wabuensis (FUW) was officially recorded in the National Pharmacopoeia of China (2010 edition) as one of the sources of BFC because of its positive therapeutic effects and few side effects. The endophytic fungus strain 6WBY3 was isolated from the fresh bulbus of FUW that had been cultivated for six years. Based on morphological methods and the phylogenetic analysis of internal transcribed spacer (ITS) sequences, this strain was identified as Fusarium redolens. Using color reaction analysis, high performance liquid chromatography with evaporative light scattering detection (HPLC-ELSD), and mass spectrometry (MS), it was demonstrated that F. redolens 6WBY3 could produce peimisine and imperialine-3β-D-glucoside, similar to its host plant. The yields of peimisine and imperialine-3β-D-glucoside were 16.0 μg·l(-1) and 18.8 μg·l(-1), respectively, in one week of culture. These results indicate that F. redolens 6WBY3 is a promising candidate for the large scale production of peimisine and imperialine-3β-D-glucoside. In addition, the results from the strain 6WBY3 lay the foundation for further study into the mechanism of Fritillaria alkaloids biosynthesis in fungi.
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Affiliation(s)
- By Feng Pan
- Agronomy College, Sichuan Agricultural University, Wenjiang, 611130 Chengdu, Sichuan, PR China
| | - Xuemei Su
- Agronomy College, Sichuan Agricultural University, Wenjiang, 611130 Chengdu, Sichuan, PR China
| | - Bo Hu
- Agronomy College, Sichuan Agricultural University, Wenjiang, 611130 Chengdu, Sichuan, PR China
| | - Nan Yang
- Agronomy College, Sichuan Agricultural University, Wenjiang, 611130 Chengdu, Sichuan, PR China
| | - Que Chen
- Agronomy College, Sichuan Agricultural University, Wenjiang, 611130 Chengdu, Sichuan, PR China
| | - Wei Wu
- Agronomy College, Sichuan Agricultural University, Wenjiang, 611130 Chengdu, Sichuan, PR China.
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Chen L, Li D, Zhang G, Zhang W, Zhang L, Guan Y, Zhu W, Liu H. Pharmacokinetics, tissue distribution and excretion of peimisine in rats assessed by liquid chromatography-tandem mass spectrometry. Arch Pharm Res 2014; 38:1138-46. [PMID: 25001900 DOI: 10.1007/s12272-014-0434-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 06/20/2014] [Indexed: 10/25/2022]
Abstract
Peimisine, the common ingredient of "zhebeimu" groups and "chuanbeimu" groups, is responsible for the expectorant and cough relieving effects. The aim of this study was to investigate the pharmacokinetics, tissue distribution and excretion of peimisine in male and female SD (Sprague-Dawley) rats by a rapid and sensitive LC-MS/MS (liquid chromatography-tandem mass spectrometry) method used carbamazepine as the internal standard after oral administration, carbamazepine was stated as an IS. The results showed that peimisine was slowly distributed, and eliminated from rat plasma and manifested linear dynamics in a dose range of 0.26-6.5 mg/kg. Tested by ANOVA, there were gender differences in the pharmacokinetic parameters of AUC(0-t), AUC(0-∞) among a single dose of 0.26, 1.3, 6.5 mg/kg (P < 0.05). Drug blood and tissue levels in male rats were significantly higher than the female counterparts after oral administration, while both the males and the females showed high drug levels in spleen, kidney, lung, liver and heart. On the other hand, the peimisine levels that can be reached in uterus, ovary, testis and brain is low. The excretion study showed that little administered peimisine (<0.7%) was recovered in the male and female bile. Approximately 13.46 and 15.05% were recovered in female urine and feces, while 43.07 and 7.49% were recovered in male urine and feces, respectively, which indicated that the major elimination route of male rats was urine excretion. In addition, there was significant differences in total cumulative excretive ratio of peimisine in feces (P < 0.05) and no significant differences in the urine (P > 0.05) at a dose of 1.3 mg/kg.
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Affiliation(s)
- Lihua Chen
- Key Laboratory of Modern Preparation of TCM, Jiangxi University of TCM, Ministry of Education, No. 18 Yun Wan Road, Nanchang, 330004, People's Republic of China,
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11
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Wang DD, Feng Y, Li Z, Zhang L, Wang S, Zhang CY, Wang XX, Liu ZY. In Vitro and In Vivo Antitumor Activity of BulbusFritillariae Cirrhosaeand Preliminary Investigation of Its Mechanism. Nutr Cancer 2014; 66:441-52. [DOI: 10.1080/01635581.2013.878737] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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12
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Hao DC, Gu XJ, Xiao PG, Peng Y. Phytochemical and biological research of Fritillaria medicine resources. Chin J Nat Med 2014; 11:330-44. [PMID: 23845541 DOI: 10.1016/s1875-5364(13)60050-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2012] [Indexed: 12/30/2022]
Abstract
The genus Fritillaria is a botanical source for various pharmaceutically active components, which have been commonly used in traditional Chinese medicine for thousands of years. Increasing interest in Fritillaria medicinal resources has led to additional discoveries of steroidal alkaloids, saponins, terpenoids, glycosides and many other compounds in various Fritillaria species, and to investigations on their chemotaxonomy, molecular phylogeny and pharmacology. In continuation of studies on Fritillaria pharmacophylogeny, the phytochemistry, chemotaxonomy, molecular biology and phylogeny of Fritillaria and their relevance to drug efficacy is reviewed. Literature searching is used to characterize the global scientific effort in the flexible technologies being applied. The interrelationship within Chinese Bei Mu species and between Chinese species, and species distributed outside of China, is clarified by the molecular phylogenetic inferences based on nuclear and chloroplast DNA sequences. The incongruence between chemotaxonomy and molecular phylogeny is revealed and discussed. It is essential to study more species for both the sustainable utilization of Fritillaria medicinal resources and for finding novel compounds with potential clinical utility. Systems biology and omics technologies will play an increasingly important role in future pharmaceutical research involving the bioactive compounds of Fritillaria.
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Affiliation(s)
- Da-Cheng Hao
- Biotechnology Institute, School of Environment, Dalian Jiaotong University, Dalian 116028, China.
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Zhang XL, Liao YQ, Cai PJ, Yao HQ, Kong LY, Sun HB. Synthesis of A B C-ring subunit of C-nor-D-homo-steroidal alkaloids: towards the total synthesis of cyclopamine. Chin J Nat Med 2013; 11:277-83. [PMID: 23725842 DOI: 10.1016/s1875-5364(13)60029-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2012] [Indexed: 10/25/2022]
Abstract
A practical approach to the synthesis of the A, B and C-ring subunit of cyclopamine has been developed. This synthetic tactic highlights the utility of mandelate acetal-mediated resolution of the fused ring ketone (±)-4 and IBX-mediated oxidation cascades from 12 to 9. The availability of advanced intermediates from enantiomerically pure (+)-4 and 2 could provide efficient access to biologically active and structurally diverse C-nor-D-homo-steroidal alkaloids such as cyclopamine.
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Affiliation(s)
- Xue-Li Zhang
- Center for Drug Discovery, College of Pharmacy, China Pharmaceutical University, Nanjing, China
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Botanicals as Angiotensin Converting Enzyme Inhibitors Useful in Hypertension. CARDIOVASCULAR DISEASES 2013. [DOI: 10.1201/b14663-34] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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15
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Ajibola CF, Eleyinmi AF, Aluko RE. Kinetics of the inhibition of renin and angiotensin i converting enzyme by polar and non-polar polyphenolic extracts of Vernonia amygdalina and Gongronema latifolium leaves. PLANT FOODS FOR HUMAN NUTRITION (DORDRECHT, NETHERLANDS) 2011; 66:320-327. [PMID: 21964876 DOI: 10.1007/s11130-011-0257-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The aim of this study was to determine the in vitro modulation of the renin-angiotensin system by polyphenolic extracts and fractions of two green leafy vegetables, Vernonia amygdalina (VA) and Gongronema latifolium (GL), that are used for food and medicinal purposes. An 80% acetone extract of each leaf was fractionated on silicic acid-packed column to give two main fractions: acetone eluate (flow-through) and ethanol eluate (column-bound), that consist mostly of chlorophyllic and non-chlorophyllic fractions, respectively. Column fractionation resulted in polyphenolic fractions that displayed higher potency against angiotensin converting enzyme (ACE) and renin than the crude acetone extracts; generally, the chlorophyllic fraction was more active than the non-chlorophyllic fraction. ACE-inhibitory activity was significantly higher (p < 0.05) for the chlorophyllic fraction of VA than GL, with IC(50) values of 0.207 and 0.413 mg/ml, respectively. Similarly, the chlorophyllic fraction of VA had significantly higher (p < 0.05) renin inhibition than GL, with IC(50) values of 0.172 and 0.513 mg/ml, respectively. Kinetics studies showed that the chlorophyllic fractions of VA and GL exhibited mostly mixed-type ACE and renin inhibitions. We concluded that the hydrophobic nature of the chlorophyllic fraction may have contributed to the increased interaction with enzyme protein and inhibition of activities of ACE and renin.
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Affiliation(s)
- Comfort F Ajibola
- Department of Food Science and Technology, Federal University of Technology, Akure, Nigeria
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16
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Nguyen XN, Phan VK, Chau VM, Bui HT, Nguyen XC, Vu KT, Hoang LTA, Jo SH, Jang HD, Kwon YI, Kim YH. A new monoterpenoid glycoside from Myrica esculenta and the inhibition of angiotensin I-converting enzyme. Chem Pharm Bull (Tokyo) 2011; 58:1408-10. [PMID: 20930414 DOI: 10.1248/cpb.58.1408] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
One new monoterpenoid glycoside, myresculoside (1), and eleven known compounds, were isolated from methanol extract of Myrica esculenta leaves by repeated column chromatography. The effects of these compounds on angiotensin I-converting enzyme (ACE) inhibition were investigated. Compounds 3 and 4 showed the most potent ACE inhibition with rates of 29.97% and 25.63% at concentration of 100 µM, respectively. Compounds 5, 6, and 11 showed weak activity with inhibitory rates of 0.07-1.41% at concentration of 100 µM.
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Affiliation(s)
- Xuan Nhiem Nguyen
- College of Pharmacy, Chungnam National University, Daejeon 305–764, Korea
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