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Salehi B, Carneiro JNP, Rocha JE, Coutinho HDM, Morais Braga MFB, Sharifi-Rad J, Semwal P, Painuli S, Moujir LM, de Zarate Machado V, Janakiram S, Anil Kumar NV, Martorell M, Cruz-Martins N, El Beyrouthy M, Sadaka C. Astragalus species: Insights on its chemical composition toward pharmacological applications. Phytother Res 2021; 35:2445-2476. [PMID: 33325585 DOI: 10.1002/ptr.6974] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/02/2020] [Accepted: 11/24/2020] [Indexed: 01/30/2023]
Abstract
Astragalus L. is widely distributed throughout the temperate regions of Europe, Asia, and North America. The genus is widely used in folk medicine and in dietary supplements, as well as in cosmetics, teas, coffee, vegetable gums, and as forage for animals. The major phytoconstituents of Astragalus species with beneficial properties are saponins, flavonoids, and polysaccharides. Astragalus extracts and their isolated components exhibited promising in vitro and in vivo biological activities, including antiaging, antiinfective, cytoprotective, antiinflammatory, antioxidant, antitumor, antidiabesity, and immune-enhancing properties. Considering their proven therapeutic potential, the aim of this work is to give a comprehensive summary of the Astragalus spp. and their active components, in an attempt to provide new insight for further clinical development of these xenobiotics. This is the first review that briefly describes their ethnopharmacology, composition, biological, and toxicological properties.
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Affiliation(s)
- Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam, Iran
| | | | | | | | | | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Facultad de Medicina, Universidad del Azuay, Cuenca, Ecuador
| | - Prabhakar Semwal
- Department of Biotechnology, Graphic Era University, Dehradun, India
- Uttarakhand State Council for Science and Technology, Dehradun, India
| | - Sakshi Painuli
- Department of Biotechnology, Graphic Era University, Dehradun, India
| | - Laila Moujir Moujir
- Department of Biochemistry, Microbiology, Molecular Biology and Genetics, University of La Laguna, Tenerife, Spain
| | - Victoria de Zarate Machado
- Department of Biochemistry, Microbiology, Molecular Biology and Genetics, University of La Laguna, Tenerife, Spain
| | - Shriyaa Janakiram
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, India
| | | | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, Centre for Healthy Living, University of Concepción, Concepción, Chile
- Universidad de Concepción, Unidad de Desarrollo Tecnológico, UDT, Concepción, Chile
| | - Natalia Cruz-Martins
- Faculty of Medicine, University of Porto, Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
- Laboratory of Neuropsychophysiology, Faculty of Psychology and Education Sciences, University of Porto, Porto, Portugal
| | | | - Carmen Sadaka
- Faculty of Medicine, American University of Beirut, Beirut, Lebanon
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Saravana Kumar P, Duraipandiyan V, Ignacimuthu S. Isolation, screening and partial purification of antimicrobial antibiotics from soil Streptomyces sp. SCA 7. Kaohsiung J Med Sci 2014; 30:435-46. [PMID: 25224766 DOI: 10.1016/j.kjms.2014.05.006] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 03/24/2014] [Accepted: 02/06/2014] [Indexed: 11/26/2022] Open
Abstract
Thirty-seven actinomycetes strains were isolated from soil samples collected from an agriculture field in Vengodu, Thiruvannamalai District, Tamil Nadu, India (latitude: 12° 54' 0033″, North; longitude: 79° 78' 5216″, East; elevation: 228.6/70.0 ft/m). The isolates were assessed for antagonistic activity against five Gram-positive bacteria, seven Gram-negative bacteria, and two pathogenic fungi. During the initial screening, 43% of the strains showed weak activity, 16% showed moderate activity, 5% showed good activity, and 35% showed no antagonistic activity. Among the strains tested, SCA 7 showed strong antimicrobial activity. Maximum biological activity was obtained on modified nutrient glucose agar (MNGA) medium. The mycelia of SCA 7 were extracted with methanol and tested against microbial pathogens using the disc diffusion method. The crude extract was purified partially using column chromatography and assessed for antimicrobial activity. Fraction 10 showed good activity against Staphylococcus epidermidis (31.25 μg/mL) and Malassezia pachydermatis (500 μg/mL) and the active principle (fraction 10) was identified as 2,4-bis (1,1-dimethylethyl) phenol. Based on morphological, physiological, biochemical, cultural, and molecular characteristics (16S rDNA sequencing), this strain was identified as Streptomyces sp. SCA 7. It could be used in the development of new substances for pharmaceutical or agricultural purposes.
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Affiliation(s)
- P Saravana Kumar
- Division of Microbiology, Entomology Research Institute, Loyola College, Chennai, India
| | - V Duraipandiyan
- Department of Botany and Microbiology, College of Science, King Saud University, P.O.Box.2455, Riyadh 11451, Saudi Arabia
| | - S Ignacimuthu
- Division of Microbiology, Entomology Research Institute, Loyola College, Chennai, India.
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