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Kotik M, Kulik N, Valentová K. Flavonoids as Aglycones in Retaining Glycosidase-Catalyzed Reactions: Prospects for Green Chemistry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:14890-14910. [PMID: 37800688 PMCID: PMC10591481 DOI: 10.1021/acs.jafc.3c04389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/30/2023] [Accepted: 09/18/2023] [Indexed: 10/07/2023]
Abstract
Flavonoids and their glycosides are abundant in many plant-based foods. The (de)glycosylation of flavonoids by retaining glycoside hydrolases has recently attracted much interest in basic and applied research, including the possibility of altering the glycosylation pattern of flavonoids. Research in this area is driven by significant differences in physicochemical, organoleptic, and bioactive properties between flavonoid aglycones and their glycosylated counterparts. While many flavonoid glycosides are present in nature at low levels, some occur in substantial quantities, making them readily available low-cost glycosyl donors for transglycosylations. Retaining glycosidases can be used to synthesize natural and novel glycosides, which serve as standards for bioactivity experiments and analyses, using flavonoid glycosides as glycosyl donors. Engineered glycosidases also prove valuable for the synthesis of flavonoid glycosides using chemically synthesized activated glycosyl donors. This review outlines the bioactivities of flavonoids and their glycosides and highlights the applications of retaining glycosidases in the context of flavonoid glycosides, acting as substrates, products, or glycosyl donors in deglycosylation or transglycosylation reactions.
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Affiliation(s)
- Michael Kotik
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14200 Prague 4, Czech Republic
| | - Natalia Kulik
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14200 Prague 4, Czech Republic
| | - Kateřina Valentová
- Institute of Microbiology, Czech Academy of Sciences, Vídeňská 1083, CZ-14200 Prague 4, Czech Republic
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Akter R, Rahman MR, Ahmed ZS, Afrose A. Plausibility of natural immunomodulators in the treatment of COVID-19-A comprehensive analysis and future recommendations. Heliyon 2023; 9:e17478. [PMID: 37366526 PMCID: PMC10284624 DOI: 10.1016/j.heliyon.2023.e17478] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 06/15/2023] [Accepted: 06/19/2023] [Indexed: 06/28/2023] Open
Abstract
The COVID-19 pandemic has inflicted millions of deaths worldwide. Despite the availability of several vaccines and some special drugs approved for emergency use to prevent or treat this disease still, there is a huge concern regarding their effectiveness, adverse effects, and most importantly, their efficacy against the new variants. A cascade of immune-inflammatory responses is involved with the pathogenesis and severe complications with COVID-19. People with dysfunctional and compromised immune systems display severe complications, including acute respiratory distress syndrome, sepsis, multiple organ failure etc., when they get infected with the SARS-CoV-2 virus. Plant-derived natural immune-suppressant compounds, such as resveratrol, quercetin, curcumin, berberine, luteolin, etc., have been reported to inhibit pro-inflammatory cytokines and chemokines. Therefore, natural products with immunomodulatory and anti-inflammatory potential could be plausible targets to treat this contagious disease. This review aims to delineate the clinical trials status and outcomes of natural compounds with immunomodulatory potential in COVID-19 patients along with the outcomes of their in-vivo studies. In clinical trials several natural immunomodulators resulted in significant improvement of COVID-19 patients by diminishing COVID-19 symptoms such as fever, cough, sore throat, and breathlessness. Most importantly, they reduced the duration of hospitalization and the need for supplemental oxygen therapy, improved clinical outcomes in patients with COVID-19, especially weakness, and eliminated acute lung injury and acute respiratory distress syndrome. This paper also discusses many potent natural immunomodulators yet to undergo clinical trials. In-vivo studies with natural immunomodulators demonstrated reduction of a wide range of proinflammatory cytokines. Natural immunomodulators that were found effective, safe, and well tolerated in small-scale clinical trials are warranted to undergo large-scale trials to be used as drugs to treat COVID-19 infections. Alongside, compounds yet to test clinically must undergo clinical trials to find their effectiveness and safety in the treatment of COVID-19 patients.
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Affiliation(s)
- Raushanara Akter
- School of Pharmacy, Brac University, 66 Mohakhali, Dhaka, Bangladesh
| | - Md Rashidur Rahman
- Department of Pharmacy, Faculty of Biological Science and Technology, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | - Zainab Syed Ahmed
- School of Pharmacy, Brac University, 66 Mohakhali, Dhaka, Bangladesh
| | - Afrina Afrose
- School of Pharmacy, Brac University, 66 Mohakhali, Dhaka, Bangladesh
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Chen C, Li X, Kano Y, Yuan D, Qu J. Oriental traditional herbal Medicine--Puerariae Flos: A systematic review. JOURNAL OF ETHNOPHARMACOLOGY 2023; 306:116089. [PMID: 36621660 DOI: 10.1016/j.jep.2022.116089] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Revised: 11/23/2022] [Accepted: 12/20/2022] [Indexed: 06/17/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pueraria Flos (PF), a traditional herbal medicine, is botanically from the dried flowers of Pueraria lobate (Willd.) Ohwi. (Chinese: ) or Pueraria thomsonii Benth. (Chinese: ). It has a long history of thousands of years in China for awakening the spleen, clearing the lungs, relieving alcohol. AIM OF THE REVIEW This review aims to report the up-to-date research progress in ethnopharmacology, phytochemistry, pharmacology and toxicology, metabolism and therapeutic application of PF, so as to provide a strong basis for future clinical treatment and scientific research. MATERIALS AND METHODS Relevant information on PF was collected from scientific literature databases including PubMed, CNKI and other literature sources (Ph.D. and M.Sc. dissertations and Chinese herbal classic books) by using the keyword "Puerariae". RESULTS Briefly, phytochemical research report has isolated 39 flavonoids, 19 saponins and 25 volatile oils from PF. Flavonoids and saponins are the most important bioactive compounds, and most of the quality control studies focus on these two types of compounds. Modern pharmacological studies have revealed their significant biological activities in relieving alcoholism, hepatoprotective, anti-tumor, anti-inflammatory, and anti-oxidation, which provides theoretical support for the traditional use. CONCLUSIONS Comprehensive analysis showed that pharmacological activity of most purified compounds from PF had not been reported. Kakkalide, tectoridin and their deglycosylated metabolites (irisolidone and tectorigenin) has been focused on excessively due to their higher content and better activities. This leads to low development and resources waste. Interestingly, PF made a breakthrough in the field of food. Many kinds of fat-lowering foods such as PILLBOX Onaka have been popular in Japan market, which received extensive attention. Therefore, we suggest that future research can be paid attention on the development of the plant's function in the field of food and medicine, as well as the transformation from experimental to clinical.
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Affiliation(s)
- Cai Chen
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, No. 222, Zhongshan Road, Dalian, 116011, China; Institute of Integrative Medicine, Dalian Medical University, No. 9, South Road of Lvshun, Dalian, 116044, China
| | - Xiaojie Li
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, No. 222, Zhongshan Road, Dalian, 116011, China; Institute (College) of Pharmacy, Dalian Medical University, No. 9, South Road of Lvshun, Dalian, 116044, China
| | - Yoshihiro Kano
- Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China
| | - Dan Yuan
- Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China.
| | - Jialin Qu
- Clinical Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, No. 222, Zhongshan Road, Dalian, 116011, China; Department of Traditional Chinese Medicine, Shenyang Pharmaceutical University, 103 Wenhua Road, Shenyang, 110016, China.
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Ren J, Barton CD, Zhan J. Engineered production of bioactive polyphenolic O-glycosides. Biotechnol Adv 2023; 65:108146. [PMID: 37028465 DOI: 10.1016/j.biotechadv.2023.108146] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 03/04/2023] [Accepted: 04/02/2023] [Indexed: 04/09/2023]
Abstract
Polyphenolic compounds (such as quercetin and resveratrol) possess potential medicinal values due to their various bioactivities, but poor water solubility hinders their health benefits to humankind. Glycosylation is a well-known post-modification method to biosynthesize natural product glycosides with improved hydrophilicity. Glycosylation has profound effects on decreasing toxicity, increasing bioavailability and stability, together with changing bioactivity of polyphenolic compounds. Therefore, polyphenolic glycosides can be used as food additives, therapeutics, and nutraceuticals. Engineered biosynthesis provides an environmentally friendly and cost-effective approach to generate polyphenolic glycosides through the use of various glycosyltransferases (GTs) and sugar biosynthetic enzymes. GTs transfer the sugar moieties from nucleotide-activated diphosphate sugar (NDP-sugar) donors to sugar acceptors such as polyphenolic compounds. In this review, we systematically review and summarize the representative polyphenolic O-glycosides with various bioactivities and their engineered biosynthesis in microbes with different biotechnological strategies. We also review the major routes towards NDP-sugar formation in microbes, which is significant for producing unusual or novel glycosides. Finally, we discuss the trends in NDP-sugar based glycosylation research to promote the development of prodrugs that positively impact human health and wellness.
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Affiliation(s)
- Jie Ren
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322-4105, USA
| | - Caleb Don Barton
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322-4105, USA
| | - Jixun Zhan
- Department of Biological Engineering, Utah State University, 4105 Old Main Hill, Logan, UT 84322-4105, USA.
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Jiang L, Tang A, Song L, Tong Y, Fan H. Advances in the development of antivirals for rotavirus infection. Front Immunol 2023; 14:1041149. [PMID: 37006293 PMCID: PMC10063883 DOI: 10.3389/fimmu.2023.1041149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 02/28/2023] [Indexed: 03/19/2023] Open
Abstract
Rotavirus (RV) causes 200,000 deaths per year and imposes a serious burden to public health and livestock farming worldwide. Currently, rehydration (oral and intravenous) remains the main strategy for the treatment of rotavirus gastroenteritis (RVGE), and no specific drugs are available. This review discusses the viral replication cycle in detail and outlines possible therapeutic approaches including immunotherapy, probiotic-assisted therapy, anti-enteric secretory drugs, Chinese medicine, and natural compounds. We present the latest advances in the field of rotavirus antivirals and highlights the potential use of Chinese medicine and natural compounds as therapeutic agents. This review provides an important reference for rotavirus prevention and treatment.
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Affiliation(s)
| | | | - Lihua Song
- *Correspondence: Huahao Fan, ; Yigang Tong, ; Lihua Song,
| | - Yigang Tong
- *Correspondence: Huahao Fan, ; Yigang Tong, ; Lihua Song,
| | - Huahao Fan
- *Correspondence: Huahao Fan, ; Yigang Tong, ; Lihua Song,
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Ramírez MC, Méndez K, Castelblanco-Mora A, Quijano S, Ulloa J. In Vitro Evaluation of Anti-Rotaviral Activity and Intestinal Toxicity of a Phytotherapeutic Prototype of Achyrocline bogotensis (Kunth) DC. Viruses 2022; 14:v14112394. [PMID: 36366492 PMCID: PMC9695875 DOI: 10.3390/v14112394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Revised: 09/18/2022] [Accepted: 09/29/2022] [Indexed: 01/31/2023] Open
Abstract
Viruses represent the primary etiologic agents (70-80%) of acute diarrheal disease (ADD), and rotavirus (RV) is the most relevant one. Currently, four rotavirus vaccines are available. However, these vaccines do not protect against emerging viral strains or are not available in low-income countries. To date, there are no approved drugs available against rotavirus infection. In this study, we evaluated the in vitro anti-rotaviral activity and intestinal toxicity of a phytotherapeutic prototype obtained from Achyrocline bogotensis (Kunth) DC. (PPAb); medicinal plant that contains compounds that inhibit the rotavirus replication cycle. Virucidal and viral yield reduction effects exerted by the PPAb were evaluated by immunocytochemistry and flow cytometry. Furthermore, the toxic impact of the PPAb was evaluated in polarized human intestinal epithelial C2BBe1 cells in terms of cytotoxicity, loss of cytoplasmic membrane asymmetry, and DNA fragmentation by MTT and fluorometry. PPAb concentrations under 0.49 mg/mL exerted significant virucidal and viral yield reduction activities, and concentrations under 16 mg/mL neither reduced cell viability, produced DNA fragmentation, nor compromised the C2BBe1cell membrane stability after 24-h incubation. Based on these results, the evaluated phytotherapeutic prototype of Achyrocline bogotensis might be considered as a promising alternative to treat ADD caused by rotavirus.
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Affiliation(s)
- María-Camila Ramírez
- Laboratorio de Virología, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Cra. 7 # 43-82, Bogotá D.C. 110231, Colombia
| | - Kelly Méndez
- Laboratorio de Virología, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Cra. 7 # 43-82, Bogotá D.C. 110231, Colombia
| | - Alicia Castelblanco-Mora
- Laboratorio de Virología, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Cra. 7 # 43-82, Bogotá D.C. 110231, Colombia
| | - Sandra Quijano
- Grupo de Inmunobiología y Biología Celular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Cra. 7 # 43-82, Bogotá D.C. 110231, Colombia
| | - Juan Ulloa
- Laboratorio de Virología, Grupo de Enfermedades Infecciosas, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Cra. 7 # 43-82, Bogotá D.C. 110231, Colombia
- Correspondence: ; Tel.: +57-601-3208320 (ext. 4029)
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Altunayar-Unsalan C, Unsalan O, Mavromoustakos T. Molecular interactions of hesperidin with DMPC/cholesterol bilayers. Chem Biol Interact 2022; 366:110131. [PMID: 36037876 DOI: 10.1016/j.cbi.2022.110131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/05/2022] [Accepted: 08/20/2022] [Indexed: 11/03/2022]
Abstract
Since cell membranes are complex systems, the use of model lipid bilayers is quite important for the study of their interactions with bioactive molecules. Mammalian cell membranes require cholesterol (CHOL) for their structure and function. For this reason, the mixtures of phospholipid and cholesterol are necessary to use in model membrane studies to better simulate the real systems. In the present study, we investigated the effect of the incorporation of hesperidin in model membranes consisting of dimyristoylphosphatidylcholine (DMPC) and CHOL by using differential scanning calorimetry (DSC), attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy, and atomic force microscopy (AFM). ATR-FTIR results demonstrated that hesperidin increases the fluidity of the DMPC/CHOL binary system. DSC findings indicated that the presence of 5 mol% hesperidin induces a broadening of the main phase transition consisting of three overlapping components. AFM experiments showed that hesperidin increases the thickness of DMPC/CHOL lipid bilayer model membranes. In addition to experimental results, molecular docking studies were conducted with hesperidin and human lanosterol synthase (LS), which is an enzyme found in the final step of cholesterol synthesis, to characterize hesperidin's interactions with its surrounding via its hydroxyl and oxygen groups. Then, hesperidin's ADME/Tox (absorption, distribution, metabolism, excretion and toxicity) profile was computed to see the potential impact on living system. In conclusion, considering the data obtained from experimental studies, this work ensures molecular insights in the interaction between a flavonoid, as an antioxidant drug model, and lipids mimicking those found in mammalian membranes. Moreover, computational studies demonstrated that hesperidin may be a great potential for use as a therapeutic agent for hypercholesterolemia due to its antioxidant property.
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Affiliation(s)
- Cisem Altunayar-Unsalan
- Ege University Central Research Testing and Analysis Laboratory Research and Application Center, 35100, Bornova, Izmir, Turkey.
| | - Ozan Unsalan
- Ege University, Faculty of Science, Department of Physics, 35100, Bornova, Izmir, Turkey.
| | - Thomas Mavromoustakos
- Section of Organic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, 15771, Greece.
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Banerjee S, Sarkar R, Mukherjee A, Miyoshi SI, Kitahara K, Halder P, Koley H, Chawla-Sarkar M. Quercetin, a flavonoid, combats rotavirus infection by deactivating rotavirus-induced pro-survival NF-κB pathway. Front Microbiol 2022; 13:951716. [PMID: 35983320 PMCID: PMC9379144 DOI: 10.3389/fmicb.2022.951716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/12/2022] [Indexed: 11/23/2022] Open
Abstract
Rotavirus (RV) is the leading cause of acute gastroenteritis and watery diarrhea in children under 5 years accounting for high morbidity and mortality in countries with poor socioeconomic status. Although vaccination against RV has been implemented in more than 100 countries, the efficacy of vaccine has been challenged in low-income settings. The lack of any FDA-approved drug against RV is an additional concern regarding the treatment associated with rotavirus-induced infantile death. With the purpose for the discovery of anti-RV therapeutics, we assessed anti-rotaviral potential of quercetin, a well-characterized antioxidant flavonoid. In vitro study revealed that quercetin treatment resulted in diminished production of RV-SA11 (simian strain) viral particles in a concentration-dependent manner as estimated by the plaque assay. Consistent with this result, Western blot analysis also revealed reduced synthesis of viral protein in quercetin-treated RV-SA11-infected MA104 cells compared to vehicle (DMSO) treated controls. Not surprisingly, infection of other RV strains A5-13 (bovine strain) and Wa (Human strain) was also found to be abridged in the presence of quercetin compared to DMSO. The IC50 of quercetin against three RV strains ranges between 2.79 and 4.36 Mm, and S.I. index is greater than 45. Concurrent to the in vitro results, in vivo study in mice model also demonstrated reduced expression of viral proteins and viral titer in the small intestine of quercetin-treated infected mice compared to vehicle-treated infected mice. Furthermore, the result suggested anti-rotaviral activity of quercetin to be interferon-independent. Mechanistic study revealed that the antiviral action of quercetin is co-related with the inhibition of RV-induced early activation of NF-κB pathway. Overall, this study delineates the strong anti-RV potential of quercetin and also proposes it as future therapeutics against rotaviral diarrhea.
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Affiliation(s)
- Shreya Banerjee
- Division of Virology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Rakesh Sarkar
- Division of Virology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Arpita Mukherjee
- Division of Virology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Shin-ichi Miyoshi
- Division of Pharmaceutical Sciences, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Kei Kitahara
- Collaborative Research Center of Okayama University for Infectious Diseases in India, Okayama University, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Prolay Halder
- Division of Bacteriology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Hemanta Koley
- Division of Bacteriology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
| | - Mamta Chawla-Sarkar
- Division of Virology, ICMR-National Institute of Cholera and Enteric Diseases, Kolkata, West Bengal, India
- *Correspondence: Mamta Chawla-Sarkar ;
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Gupta P, Sheikh A, Abourehab MAS, Kesharwani P. Amelioration of Full-Thickness Wound Using Hesperidin Loaded Dendrimer-Based Hydrogel Bandages. BIOSENSORS 2022; 12:462. [PMID: 35884268 PMCID: PMC9313408 DOI: 10.3390/bios12070462] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/22/2022] [Accepted: 06/22/2022] [Indexed: 06/15/2023]
Abstract
Wound healing is a complex biological phenomenon, having different but overlapping stages to obtained complete re-epithelization. The aim of the current study was to develop a dendrimer-based hydrogel bandage, to ameliorate full-thickness wounds. Hesperidin, a bioflavonoid found in vegetables and citrus fruits, is used for treatment of wounds; however, its therapeutic use is limited, due to poor water solubility and poor bioavailability. This issue was overcome by incorporating hesperidin in the inner core of a dendrimer. Hence, a dendrimer-based hydrogel bandage was prepared, and the wound healing activity was determined. A hemolysis study indicated that the hesperidin-loaded dendrimer was biocompatible and can be used for wound healing. The therapeutic efficacy of the prepared formulation was evaluated on a full-thickness wound, using an animal model. H&E staining of the control group showed degenerated neutrophils and eosinophils, while 10% of the formulation showed wound closure, formation of the epidermal layer, and remodeling. The MT staining of the 10% formulation showed better collagen synthesis compared to the control group. In vivo results showed that the preparation had better wound contraction activity compared to the control group; after 14 days, the control group had 79 ± 1.41, while the 10% of formulation had 98.9 ± 0.42. In a nutshell, Hsp-P-Hyd 10% showed the best overall performance in amelioration of full-thickness wounds.
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Affiliation(s)
- Praveen Gupta
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India; (P.G.); (A.S.)
| | - Afsana Sheikh
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India; (P.G.); (A.S.)
| | - Mohammed A. S. Abourehab
- Department of Pharmaceutics, College of Pharmacy, Umm Al-Qura University, Makkah 21955, Saudi Arabia;
- Department of Pharmaceutics and Industrial Pharmacy, College of Pharmacy, Minia University, Minia 61519, Egypt
| | - Prashant Kesharwani
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi 110062, India; (P.G.); (A.S.)
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Li C, Dai T, Chen J, Chen M, Liang R, Liu C, Du L, McClements DJ. Modification of flavonoids: methods and influences on biological activities. Crit Rev Food Sci Nutr 2022; 63:10637-10658. [PMID: 35687361 DOI: 10.1080/10408398.2022.2083572] [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] [Indexed: 11/03/2022]
Abstract
Flavonoids are important active ingredients in plant-based food, which have many beneficial effects on health. But the low solubility, poor oral bioavailability, and inferior stability of many flavonoids may limit their applications in the food, cosmetics, and pharmaceutical industries. Structural modification can overcome these shortcomings to improve and extend the application of flavonoids. The study of how to modify flavonoids and the influence of various modifications on biological activity have drawn great interest in the current literature. In this review, the working principles and operating conditions of modification methods were summarized along with their potential and limitations in terms of operational safety, cost, and productivity. The influence of various modifications on biological activities and the structure-activity relationships of flavonoids derivatives were discussed and highlighted, which may give guidance for the synthesis of highly effective active agents. In addition, the safety of flavonoids derivatives is reviewed, and future research directions of flavonoid modification research are discussed.
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Affiliation(s)
- Changhong Li
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Taotao Dai
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
- Guangxi Academy of Agricultural Sciences, Agro-food Science and Technology Research Institute, Nanning, China
| | - Jun Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Mingshun Chen
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Ruihong Liang
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Chengmei Liu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, China
| | - Liqing Du
- China Academy of Tropical Agricultural Sciences, South Subtropical Crop Research Institute, Zhanjiang China
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Multidimensional in silico strategy for identification of natural polyphenols-based SARS-CoV-2 main protease (M pro) inhibitors to unveil a hope against COVID-19. Comput Biol Med 2022; 145:105452. [PMID: 35364308 PMCID: PMC8957318 DOI: 10.1016/j.compbiomed.2022.105452] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 07/13/2021] [Accepted: 03/23/2022] [Indexed: 12/16/2022]
Abstract
SARS-CoV-2, a rapidly spreading new strain of human coronavirus, has affected almost all the countries around the world. The lack of specific drugs against SARS-CoV-2 is a significant hurdle towards the successful treatment of COVID-19. Thus, there is an urgent need to boost up research for the development of effective therapeutics against COVID-19. In the current study, we investigated the efficacy of 81 medicinal plant-based bioactive compounds against SARS-CoV-2 Mpro by using various in silico techniques. The interaction affinities of polyphenolic compounds towards SARS-CoV-2 Mpro was assessed via intramolecular (by Quantum Mechanic), intermolecular (by Molecular Docking), and spatial (by Molecular Dynamic) simulations. Our obtained result demonstrate that Hesperidin, rutin, diosmin, and apiin are most effective compounds agents against SARS-CoV-2 Mpro as compared to Nelfinavir (positive control). This study will hopefully pave a way for advanced experimental research to evaluate the in vitro and in vivo efficacy of these compounds for the treatment of COVID-19.
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Composition of Phenolic Compounds in South African Schinus molle L. Berries. Foods 2022; 11:foods11101376. [PMID: 35626946 PMCID: PMC9140791 DOI: 10.3390/foods11101376] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 05/06/2022] [Accepted: 05/07/2022] [Indexed: 01/15/2023] Open
Abstract
The Schinus molle tree is notoriously invasive in most parts of the world, and yet as a pseudospice, its berries potentially possess some significant health benefits which need to be explored. Therefore, polar metabolome of seed + husks (SH), husks (H), and de-hulled (DH) berries were profiled and quantified by untargeted metabolomics approach using UPLC-QTOF-MS. A total of 13 gallotannins, three phenolic acids, a phenolic acid glucoside, three phenolic acid esters, an organic acid, a gallotannin derivative, and nine flavonoids were detected and quantified. Phenolic acids ranged between 12.2–295.7; 4.9–77; and 89.7–1613.1 mg/kg in SH, DH seeds and H respectively. Flavonoids ranged between 1.8–267.5; 73.4–80.4; and 124–564.3 mg/kg in SH, DH seeds and H respectively. Gallotannins ranged between 1.1–146.6; 14.8–21.8; and 48.1–664.8 mg/kg in SH, DH seeds and H respectively. Feruloyltartaric A, quercetin 3-O-glucuronide, catechin digalloylshikimic acid B as well as digalloyl quinic acid were some of the dominant secondary metabolites revealed. These results indicate that S. molle berries are a rich source of secondary metabolites with elevated concentrations in the husks, while DH seeds possess lower concentrations to none. These findings open important insights into the potential of S. molle berries as a natural source of antioxidants for the food and pharmaceutical industries.
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Khan M, Rauf W, Habib FE, Rahman M, Iqbal S, Shehzad A, Iqbal M. Hesperidin identified from Citrus extracts potently inhibits HCV genotype 3a NS3 protease. BMC Complement Med Ther 2022; 22:98. [PMID: 35366855 PMCID: PMC8976278 DOI: 10.1186/s12906-022-03578-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Accepted: 03/25/2022] [Indexed: 11/29/2022] Open
Abstract
Background Hepatitis C virus infection is the main cause of liver ailments across the globe. Several HCV genotypes have been identified in different parts of the world. Effective drugs for combating HCV infections are available but not affordable, particularly to infected individuals from resource-limited countries. Hence, cost-effective drugs need to be developed against important HCV drug targets. As Citrus fruits naturally contain bioactive compounds with antiviral activities, the current study was designed to identify antiviral inhibitors from Citrus fruit extracts against an important drug target, NS3 protease, of HCV genotype 3a which is found predominantly in South Asian countries. Methods The full-length NS3 protease alone and the NS3 protease domain in fusion with the cognate NS4A cofactor were expressed in Escherichia coli, and purified by chromatographic techniques. Using the purified protein as a drug target, Citrus extracts were evaluated in a FRET assay, and active ingredients, identified using ESI–MS/MS, were docked to observe the interaction with active site residues of NS3. The best interacting compound was further confirmed through the FRET assay as the inhibitor of NS3 protease. Results Fusion of the NS3 protease domain to the NS4A cofactor significantly improved the purification yield, and NS3-NS4A was functionally more active than the full-length NS3 alone. The purified protein (NS3-NS4A) was successfully employed in a validated FRET assay to evaluate 14 Citrus fruit extracts, revealing that the mesocarp extract of Citrus paradisi, and whole fruit extracts of C. sinesis, C. aurantinum, and C. reticulata significantly inhibited the protease activity of HCV NS3 protease (IC50 values of 5.79 ± 1.44 µg/mL, 37.19 ± 5.92 µg/mL, 42.62 ± 6.89 µg/mL, and 57.65 ± 3.81 µg/mL, respectively). Subsequent ESI-MSn analysis identified a flavonoid, hesperidin, abundantly present in all the afore-mentioned Citrus extracts. Importantly, docking studies suggested that hesperidin interacts with active site residues, and acts as a potent inhibitor of NS3 protease, exhibiting an IC50 value of 11.34 ± 3.83 µg/mL. Conclusions A FRET assay was developed using NS3-NS4A protease, which was successfully utilized for the evaluation of Citrus fruit extracts. Hesperidin, a compound present in the Citrus extracts, was identified as the main flavonoid, which can serve as a cost-effective potent inhibitor of NS3 protease, and could be developed as a drug for antiviral therapy against HCV genotype 3a. Supplementary Information The online version contains supplementary material available at 10.1186/s12906-022-03578-1.
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Agrawal PK, Agrawal C, Blunden G. Naringenin as a Possible Candidate Against SARS-CoV-2 Infection and in the Pathogenesis of COVID-19. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211066723] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Naringenin, widely distributed in fruits and vegetables, is endowed with antiviral and other health beneficial activities, such as immune-stimulating and anti-inflammatory actions that could play a role in contributing, to some extent, to either preventing or alleviating coronavirus infection. Several computational studies have identified naringenin as one of the prominent flavonoids that can possibly inhibit internalization of the virus, virus-host interactions that trigger the cytokine storm, and replication of the virus. This review highlights the antiviral potential of naringenin in COVID-19 associated risk factors and its predicted therapeutic targets against SARS-CoV-2 infection.
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Affiliation(s)
- Pawan K. Agrawal
- Natural Product Inc., 7963 Anderson Park Lane, Westerville, OH 43081, USA
| | - Chandan Agrawal
- Natural Product Inc., 7963 Anderson Park Lane, Westerville, OH 43081, USA
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Agrawal PK, Agrawal C, Blunden G. Pharmacological Significance of Hesperidin and Hesperetin, Two Citrus Flavonoids, as Promising Antiviral Compounds for Prophylaxis Against and Combating COVID-19. Nat Prod Commun 2021. [DOI: 10.1177/1934578x211042540] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
Hesperidin and hesperetin are flavonoids that are abundantly present as constituents of citrus fruits. These compounds have attracted attention as several computational methods, mostly docking studies, have shown that hesperidin may bind to multiple regions of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) (spike protein, angiotensin-converting enzyme 2, and proteases). Hesperidin has a low binding energy, both with the SARS-CoV-2 “spike” protein responsible for internalization, and also with the “PLpro” and “Mpro” responsible for transforming the early proteins of the virus into the complex responsible for viral replication. This suggests that these flavonoids could act as prophylactic agents by blocking several mechanisms of viral infection and replication, and thus helping the host cell to resist viral attack.
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Affiliation(s)
| | | | - Gerald Blunden
- School of Pharmacy & Biomedical Sciences, University of Portsmouth, Portsmouth, UK
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Liu X, Huang Z, Zhang J, Zhou Y, Zhang Y, Wu M, Ma Z, Cao H. Comparisons of the anti-inflammatory, antiviral, and hemostatic activities and chemical profiles of raw and charred Schizonepetae Spica. JOURNAL OF ETHNOPHARMACOLOGY 2021; 278:114275. [PMID: 34087404 DOI: 10.1016/j.jep.2021.114275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 05/13/2021] [Accepted: 05/30/2021] [Indexed: 06/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE A common view in traditional Chinese medicine (TCM) theory is that "processing can alter the efficacy of crude drugs". The clinical usage of some processed products may have already changed greatly over time during the development of modern scientific analysis. Therefore, the view of "processing can alter the efficacy of crude drugs" should be confirmed by comparative studies. Schizonepetae Spica (SS), a Chinese medicinal herb, is the dried spike of Schizonepeta tenuifolia Briq. It is available in two forms: raw products and charred products (Schizonepetae Spica Carbonisata, SSC; raw SS processed by stir-frying until carbonization). Raw SS is commonly used to treat TCM symptoms that resemble common cold, fever, respiratory tract infection and allergic dermatitis, while SSC has long been used as a remedy for TCM symptoms that resemble bloody stool and metrorrhagia. AIM OF THE STUDY We aimed to examine whether stir-fry processing alters the anti-inflammatory, antiviral and hemostatic activities of SS and explore the chemical profile behind the potential changes in medicinal properties caused by stir-fry processing. MATERIALS AND METHODS We used cell models to examine the anti-inflammatory and antiviral effects of raw SS and SSC. The bleeding time of the tail bleeding model and clotting time of the capillary method in mice were used to compare the hemostasis properties of raw SS and SSC. The chemical profiles of SS and SSC were compared using a method combining gas chromatography-mass spectrometry (GC-MS) and high-performance liquid chromatography/quadrupole-time-of-flight mass spectrometry (HPLC/Q-TOF-MS) analysis. RESULTS The anti-inflammatory effects of SSC were less potent than those of raw SS. Both raw SS and SSC effectively inhibited viral infection in a dose-dependent manner, with IC50 values of 96.30 and 9.73 μg/mL and selectivity index (SI) values of >1.56 and 7.78, respectively. Interestingly, SSC showed more potent antiviral activities than raw SS. Intragastric administration of raw SS and SSC to mice demonstrated that the hemostatic effects of SSC were more potent than those of raw SS. By comparing the volatile chemical profiles of SSC, we found that twenty-nine constituents disappeared and that fifty-four new constituents were formed while the relative contents of five other components decreased and three other components increased. Additionally, the nonvolatile chemical profiles of raw SS and SSC differed, with thirty-two lower peaks and seven higher peaks in SSC than in SS. CONCLUSION Our study showed that raw SS and SSC support traditional practice for the clinical applications of these two products except for raw SS used for the treatment of viral infection. It is a fascinating challenge to form SSCs with both traditional hemostatic activities and antiviral properties after stir-fry processing. In addition, the volatile and nonvolatile chemical constituents of raw SS changed dramatically during processing. Further studies are warranted to explore whether the change in chemical constituents is in accordance with the purpose of processing.
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Affiliation(s)
- Xindan Liu
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China; School of Stomatology and Medicine, Foshan University, Foshan, 528000, Guangdong, China.
| | - Zihan Huang
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China.
| | - Jinju Zhang
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China.
| | - Yu Zhou
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China.
| | - Ying Zhang
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China; National Engineering Research Center for Modernization of Traditional Chinese Medicine Lingnan Resources Branch, Guangzhou, 510632, Guangdong, China; Guangdong Key Lab of Traditional Chinese Medicine Information Technology, Guangzhou, 510632, Guangdong, China.
| | - Menghua Wu
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China; National Engineering Research Center for Modernization of Traditional Chinese Medicine Lingnan Resources Branch, Guangzhou, 510632, Guangdong, China; Guangdong Key Lab of Traditional Chinese Medicine Information Technology, Guangzhou, 510632, Guangdong, China.
| | - Zhiguo Ma
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China; National Engineering Research Center for Modernization of Traditional Chinese Medicine Lingnan Resources Branch, Guangzhou, 510632, Guangdong, China; Guangdong Key Lab of Traditional Chinese Medicine Information Technology, Guangzhou, 510632, Guangdong, China.
| | - Hui Cao
- Research Center for Traditional Chinese Medicine of Lingnan (Southern China), Jinan University, Guangzhou, 510632, Guangdong, China; National Engineering Research Center for Modernization of Traditional Chinese Medicine Lingnan Resources Branch, Guangzhou, 510632, Guangdong, China; Guangdong Key Lab of Traditional Chinese Medicine Information Technology, Guangzhou, 510632, Guangdong, China.
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Bhowmik D, Nandi R, Prakash A, Kumar D. Evaluation of flavonoids as 2019-nCoV cell entry inhibitor through molecular docking and pharmacological analysis. Heliyon 2021; 7:e06515. [PMID: 33748510 PMCID: PMC7955945 DOI: 10.1016/j.heliyon.2021.e06515] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 09/21/2020] [Accepted: 03/10/2021] [Indexed: 12/27/2022] Open
Abstract
The outbreak of Coronavirus Disease 2019 (COVID-19) has been declared as a Public Health Emergency of International Concern (PHEIC) by the World Health Organization (WHO), which is being rapidly spread by the extremely spreadable and pathogenic 2019 novel coronavirus (2019-nCoV), also known as SARS-CoV-2. Pandemic incidence of COVID-19 has created a severe threat to global public health, necessitating the development of effective drugs or inhibitors or therapeutics agents against SARS-CoV-2. Spike protein (S) of the SARS-CoV-2 plays a crucial role in entering viruses into the host cell by binding to angiotensin-converting enzyme 2 (ACE-2), and this specific interaction represents a promising drug target for the identification of potential drugs. This study aimed at the receptor-binding domain of S protein (RBD of nCoV-SP) and the ACE-2 receptor as a promising target for developing drugs against SARS-CoV-2. Over 100 different flavonoids with antioxidant, anti-inflammatory, and antiviral properties from different literatures were taken as a ligand or inhibitor for molecular docking against target protein RBD of nCoV-SP and ACE-2 using PyRX and iGEMDOCK. Top flavonoids based on docking scores were selected for the pharmacokinetic study. Selected flavonoids (hesperidin, naringin, ECGC, and quercetin) showed excellent pharmacokinetics with proper absorption, solubility, permeability, distribution, metabolism, minimal toxicity, and excellent bioavailability. Molecular dynamics simulation studies up to 100 ns exhibited strong binding affinity of selected flavonoids to RBD of nCoV-SP and ACE-2, and the protein-ligand complexes were structurally stable. These identified lead flavonoids may act as potential compounds for developing effective drugs against SARS-CoV-2 by potentially inhibiting virus entry into the host cell.
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Affiliation(s)
- Deep Bhowmik
- Department of Microbiology, Assam University, Silchar, 788011, Assam, India
| | - Rajat Nandi
- Department of Microbiology, Assam University, Silchar, 788011, Assam, India
| | - Amresh Prakash
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Gurgaon, 122413, India
| | - Diwakar Kumar
- Department of Microbiology, Assam University, Silchar, 788011, Assam, India
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Saha S, Nandi R, Vishwakarma P, Prakash A, Kumar D. Discovering Potential RNA Dependent RNA Polymerase Inhibitors as Prospective Drugs Against COVID-19: An in silico Approach. Front Pharmacol 2021; 12:634047. [PMID: 33716752 PMCID: PMC7952625 DOI: 10.3389/fphar.2021.634047] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Accepted: 01/29/2021] [Indexed: 12/21/2022] Open
Abstract
COVID-19, caused by Severe Acute Respiratory Syndrome Corona Virus 2, is declared a Global Pandemic by WHO in early 2020. In the present situation, though more than 180 vaccine candidates with some already approved for emergency use, are currently in development against SARS-CoV-2, their safety and efficacy data is still in a very preliminary stage to recognize them as a new treatment, which demands an utmost emergency for the development of an alternative anti-COVID-19 drug sine qua non for a COVID-19 free world. Since RNA-dependent RNA polymerase (RdRp) is an essential protein involved in replicating the virus, it can be held as a potential drug target. We were keen to explore the plant-based product against RdRp and analyze its inhibitory potential to treat COVID-19. A unique collection of 248 plant compounds were selected based on their antiviral activity published in previous literature and were subjected to molecular docking analysis against the catalytic sub-unit of RdRp. The docking study was followed by a pharmacokinetics analysis and molecular dynamics simulation study of the selected best-docked compounds. Tellimagrandin I, SaikosaponinB2, Hesperidin and (-)-Epigallocatechin Gallate were the most prominent ones that showed strong binding affinity toward RdRp. All the compounds mentioned showed satisfactory pharmacokinetics properties and remained stabilized at their respective binding sites during the Molecular dynamics simulation. Additionally, we calculated the free-binding energy/the binding properties of RdRp-ligand complexes with the connection of MM/GBSA. Interestingly, we observe that SaikosaponinB2 gives the best binding affinity (∆Gbinding = -42.43 kcal/mol) in the MM/GBSA assay. Whereas, least activity is observed for Hesperidin (∆Gbinding = -22.72 kcal/mol). Overall our study unveiled the feasibility of the SaikosaponinB2 to serve as potential molecules for developing an effective therapy against COVID-19 by inhibiting one of its most crucial replication proteins, RdRp.
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Affiliation(s)
- Satabdi Saha
- Department of Microbiology, Assam University, Silchar, India
| | - Rajat Nandi
- Department of Microbiology, Assam University, Silchar, India
| | - Poonam Vishwakarma
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi, India
| | - Amresh Prakash
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Gurgaon, India
| | - Diwakar Kumar
- Department of Microbiology, Assam University, Silchar, India
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Computational and network pharmacology analysis of bioflavonoids as possible natural antiviral compounds in COVID-19. INFORMATICS IN MEDICINE UNLOCKED 2020; 22:100504. [PMID: 33363251 PMCID: PMC7756171 DOI: 10.1016/j.imu.2020.100504] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/15/2020] [Accepted: 12/15/2020] [Indexed: 12/17/2022] Open
Abstract
Bioflavonoids are the largest group of plant-derived polyphenolic compounds with diverse biological potential and have also been proven efficacious in the treatment of Severe Acute Respiratory Syndrome (SARS) and Middle East Respiratory Syndrome (MERS). The present investigation validates molecular docking, simulation, and MM-PBSA studies of fifteen bioactive bioflavonoids derived from plants as a plausible potential antiviral in the treatment of COVID-19. Molecular docking studies for 15 flavonoids on the three SARS CoV-2 proteins, non-structural protein-15 Endoribonuclease (NSP15), the receptor-binding domain of spike protein (RBD of S protein), and main protease (Mpro/3CLpro) were performed and selected protein-ligand complexes were subjected to Molecular Dynamics simulations. The molecular dynamics trajectories were subjected to free energy calculation by the MM-PBSA method. All flavonoids were further assessed for their effectiveness as adjuvant therapy by network pharmacology analysis on the target proteins. The network pharmacology analysis suggests the involvement of selected bioflavonoids in the modulation of multiple signaling pathways like p53, FoxO, MAPK, Wnt, Rap1, TNF, adipocytokine, and leukocyte transendothelial migration which plays a significant role in immunomodulation, minimizing the oxidative stress and inflammation. Molecular docking and molecular dynamics simulation studies illustrated the potential of glycyrrhizic acid, amentoflavone, and mulberroside in inhibiting key SARS-CoV-2 proteins and these results could be exploited further in designing future ligands from natural sources. Bioflavonoids are potential antiviral secondary metabolites. Docking, MD and network pharmacology demonstrated antiviral & adjuvant potential. MM-PBSA calculations and network pharmacology identified key bioflavonoids. Mulberroside, Glycyrrhizic acid and Amentoflavone may hold promise in COVID-19.
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Key Words
- 2019-nCoV, 2019 Novel Coronavirus
- Amentoflavone
- Bioflavonoids
- COVID-19, Coronavirus Disease-2019
- CoV, Corona Virus
- Glycyrrhizic acid
- In-silico study
- MD, Molecular Dynamics
- MM-PBSA, Molecular Mechanics Poisson-Boltzmann Surface Area
- Mulberroside
- NSP, Non-structural Protein
- Novel Coronavirus-2
- OPLS, Optimized Potentials for Liquid Simulations
- ORF, Open Reading Frame
- RBD, Receptor Binding Domain
- RMSD, Root Mean Square Deviation
- SARS, Severe Acute Respiratory syndrome
- SARS-CoV-2, Severe Acute Respiratory syndrome Coronavirus-2
- SDF, Structure Data File
- WHO, World Health Organization
- Å, Angstrom
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Bhowmik D, Nandi R, Jagadeesan R, Kumar N, Prakash A, Kumar D. Identification of potential inhibitors against SARS-CoV-2 by targeting proteins responsible for envelope formation and virion assembly using docking based virtual screening, and pharmacokinetics approaches. INFECTION GENETICS AND EVOLUTION 2020; 84:104451. [PMID: 32640381 PMCID: PMC7335633 DOI: 10.1016/j.meegid.2020.104451] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/25/2020] [Accepted: 06/29/2020] [Indexed: 02/06/2023]
Abstract
WHO has declared the outbreak of COVID-19 as a public health emergency of international concern. The ever-growing new cases have called for an urgent emergency for specific anti-COVID-19 drugs. Three structural proteins (Membrane, Envelope and Nucleocapsid protein) play an essential role in the assembly and formation of the infectious virion particles. Thus, the present study was designed to identify potential drug candidates from the unique collection of 548 anti-viral compounds (natural and synthetic anti-viral), which target SARS-CoV-2 structural proteins. High-end molecular docking analysis was performed to characterize the binding affinity of the selected drugs-the ligand, with the SARS-CoV-2 structural proteins, while high-level Simulation studies analyzed the stability of drug-protein interactions. The present study identified rutin, a bioflavonoid and the antibiotic, doxycycline, as the most potent inhibitor of SARS-CoV-2 envelope protein. Caffeic acid and ferulic acid were found to inhibit SARS-CoV-2 membrane protein while the anti-viral agent's simeprevir and grazoprevir showed a high binding affinity for nucleocapsid protein. All these compounds not only showed excellent pharmacokinetic properties, absorption, metabolism, minimal toxicity and bioavailability but were also remain stabilized at the active site of proteins during the MD simulation. Thus, the identified lead compounds may act as potential molecules for the development of effective drugs against SARS-CoV-2 by inhibiting the envelope formation, virion assembly and viral pathogenesis.
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Affiliation(s)
- Deep Bhowmik
- Department of Microbiology, Assam University, Silchar 788011, Assam, India
| | - Rajat Nandi
- Department of Microbiology, Assam University, Silchar 788011, Assam, India
| | - Rahul Jagadeesan
- CAS in Crystallography and Biophysics, Guindy Campus, University of Madras, Chennai 600025, India
| | - Niranjan Kumar
- School of Computational and Integrative Sciences, Jawaharlal Nehru University, New Delhi 110067, India
| | - Amresh Prakash
- Amity Institute of Integrative Sciences and Health, Amity University Haryana, Gurgaon 122413, India
| | - Diwakar Kumar
- Department of Microbiology, Assam University, Silchar 788011, Assam, India.
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Sobhani M, Farzaei MH, Kiani S, Khodarahmi R. Immunomodulatory; Anti-inflammatory/antioxidant Effects of Polyphenols: A Comparative Review on the Parental Compounds and Their Metabolites. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1717523] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mahsa Sobhani
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sarah Kiani
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Khodarahmi
- Medical Biology Research Center, Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
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Bagher Z, Ehterami A, Safdel MH, Khastar H, Semiari H, Asefnejad A, Davachi SM, Mirzaii M, Salehi M. Wound healing with alginate/chitosan hydrogel containing hesperidin in rat model. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101379] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Zaki AA, Al-Karmalawy AA, El-Amier YA, Ashour A. Molecular docking reveals the potential of Cleome amblyocarpa isolated compounds to inhibit COVID-19 virus main protease. NEW J CHEM 2020. [DOI: 10.1039/d0nj03611k] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The efficacy of nine flavonoid and one saponin compounds against COVID-19 protease was evaluated using molecular docking studies.
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Affiliation(s)
- Ahmed A. Zaki
- Department of Pharmacognosy
- Faculty of Pharmacy
- Mansoura University
- Mansoura 35516
- Egypt
| | - Ahmed A. Al-Karmalawy
- Department of Pharmaceutical Medicinal Chemistry
- Faculty of Pharmacy
- Horus University-Egypt
- New Damietta 34518
- Egypt
| | - Yasser A. El-Amier
- Botany Department
- Ecology, Faculty of Science
- Mansoura University
- Mansoura 35516
- Egypt
| | - Ahmed Ashour
- Department of Pharmacognosy
- Faculty of Pharmacy
- Mansoura University
- Mansoura 35516
- Egypt
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Mohammadi Pour P, Fakhri S, Asgary S, Farzaei MH, Echeverría J. The Signaling Pathways, and Therapeutic Targets of Antiviral Agents: Focusing on the Antiviral Approaches and Clinical Perspectives of Anthocyanins in the Management of Viral Diseases. Front Pharmacol 2019; 10:1207. [PMID: 31787892 PMCID: PMC6856223 DOI: 10.3389/fphar.2019.01207] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 09/19/2019] [Indexed: 12/31/2022] Open
Abstract
As the leading cause of death worldwide, viruses significantly affect global health. Despite the rapid progress in human healthcare, there are few viricidal and antiviral therapies that are efficient enough. The rapid emergence of resistance, and high costs, as well as the related side effects of synthetic antiviral drugs, raise the need to identify novel, effective, and safe alternatives against viral diseases. Nature has been of the most exceptional help and source of inspiration for developing novel multi-target antiviral compounds, affecting several steps of the viral life cycle and host proteins. For that matter and due to safety and efficacy limitations, as well as high resistance rate of conventional therapies, hundreds of natural molecules are preferred over the synthetic drugs. Besides, natural antiviral agents have shown acceptable antiviral value in both preclinical and clinical trials.This is the first review regarding molecular and cellular pathways of the virus life cycle, treatment strategies, and therapeutic targets of several viral diseases with a particular focus on anthocyanins as promising natural compounds for significant antiviral enhancements. Clinical applications and the need to develop nano-formulation of anthocyanins in drug delivery systems are also considered.
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Affiliation(s)
- Pardis Mohammadi Pour
- Department of Pharmacognosy, School of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Sajad Fakhri
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Sedigheh Asgary
- Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Mohammad Hosein Farzaei
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Javier Echeverría
- Departamento de Ciencias del Ambiente, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
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Noshita T, Miura K, Ikeda K, Ouchi H, Matsumoto T, Tai A. Structure-activity relationships of flavanones, flavanone glycosides, and flavones in anti-degranulation activity in rat basophilic leukemia RBL-2H3 cells. J Nat Med 2018; 72:551-556. [PMID: 29349649 DOI: 10.1007/s11418-017-1169-3] [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: 10/14/2017] [Accepted: 12/26/2017] [Indexed: 01/16/2023]
Abstract
The incidence of type I allergies, which are associated with mast cell degranulation and local inflammation, is increasing, and new treatments are needed. To date, structure-activity relationships of flavonoids in their degranulation-inhibiting activity have not been systematically characterized. In the current study, the degranulation-inhibiting activity of a series of flavonoids was evaluated. The following three observations were made: (1) the activity disappears when a sugar moiety is introduced into the A ring of the flavanone; (2) the activity depends on the number of hydroxyl groups on the B ring; (3) the activity is markedly enhanced when a double bond is introduced into the C ring. The information obtained in the current study may guide the development of a therapy for type I allergies.
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Affiliation(s)
- Toshiro Noshita
- Department of Life Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, 5562 Nanatsuka, Shobara, Hiroshima, 727-0023, Japan.
| | - Kaori Miura
- Program in Biological System Sciences, Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, 5562 Nanatsuka, Shobara, Hiroshima, 727-0023, Japan
| | - Kaoru Ikeda
- Program in Biological System Sciences, Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, 5562 Nanatsuka, Shobara, Hiroshima, 727-0023, Japan
| | - Hidekazu Ouchi
- Department of Pharmacy, Faculty of Pharmacy, Kindai University, 3-4-1 Kowakae, Higashiosaka, 577-8502, Japan
| | - Takuya Matsumoto
- Department of Environmental Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, 5562 Nanatsuka, Shobara, Hiroshima, 727-0023, Japan
| | - Akihiro Tai
- Department of Life Sciences, Faculty of Life and Environmental Sciences, Prefectural University of Hiroshima, 5562 Nanatsuka, Shobara, Hiroshima, 727-0023, Japan.
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Chhikara N, Kour R, Jaglan S, Gupta P, Gat Y, Panghal A. Citrus medica: nutritional, phytochemical composition and health benefits – a review. Food Funct 2018; 9:1978-1992. [DOI: 10.1039/c7fo02035j] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Health benefits and products ofCitrus medica.
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Affiliation(s)
- Navnidhi Chhikara
- Department of Food Technology and Nutrition
- Lovely Professional University
- Phagwara
- India
| | - Ragni Kour
- Department of Food Technology and Nutrition
- Lovely Professional University
- Phagwara
- India
| | | | - Pawan Gupta
- School of Pharmaceutical Sciences
- Lovely Professional University
- Phagwara
- India
| | - Yogesh Gat
- Department of Food Technology and Nutrition
- Lovely Professional University
- Phagwara
- India
| | - Anil Panghal
- Department of Food Technology and Nutrition
- Lovely Professional University
- Phagwara
- India
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Deng X, Zhao Z, Xiong S, Xiong R, Liu J, Wang Z, Zou L, Lei X, Cao X, Xie Z, Chen Y, Zheng X, Liu Y, Tang G. Synthesis and evaluation of antitumour activity in vitro and in vivo of chrysin salicylate derivatives. Nat Prod Res 2017; 32:2178-2186. [DOI: 10.1080/14786419.2017.1371159] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Xiangping Deng
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Zihao Zhao
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
- Pharmacy Department, Xiangtan Central Hospital, Xiangtan, China
| | - Shujuan Xiong
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Runde Xiong
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Juan Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Zhe Wang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Liu Zou
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Xiaoyong Lei
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Xuan Cao
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Zhizhong Xie
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Yanming Chen
- Mu Dan Jiang You Bo Pharmacertical Co.Ltd, Mudanjiang, China
| | - Xing Zheng
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Yunmei Liu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
| | - Guotao Tang
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, Institute of Pharmacy and Pharmacology, University of South China, Hengyang, China
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Xiao J. Dietary flavonoid aglycones and their glycosides: Which show better biological significance? Crit Rev Food Sci Nutr 2017; 57:1874-1905. [PMID: 26176651 DOI: 10.1080/10408398.2015.1032400] [Citation(s) in RCA: 176] [Impact Index Per Article: 25.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The dietary flavonoids, especially their glycosides, are the most vital phytochemicals in diets and are of great general interest due to their diverse bioactivity. The natural flavonoids almost all exist as their O-glycoside or C-glycoside forms in plants. In this review, we summarized the existing knowledge on the different biological benefits and pharmacokinetic behaviors between flavonoid aglycones and their glycosides. Due to various conclusions from different flavonoid types and health/disease conditions, it is very difficult to draw general or universally applicable comments regarding the impact of glycosylation on the biological benefits of flavonoids. It seems as though O-glycosylation generally reduces the bioactivity of these compounds - this has been observed for diverse properties including antioxidant activity, antidiabetes activity, anti-inflammation activity, antibacterial, antifungal activity, antitumor activity, anticoagulant activity, antiplatelet activity, antidegranulating activity, antitrypanosomal activity, influenza virus neuraminidase inhibition, aldehyde oxidase inhibition, immunomodulatory, and antitubercular activity. However, O-glycosylation can enhance certain types of biological benefits including anti-HIV activity, tyrosinase inhibition, antirotavirus activity, antistress activity, antiobesity activity, anticholinesterase potential, antiadipogenic activity, and antiallergic activity. However, there is a lack of data for most flavonoids, and their structures vary widely. There is also a profound lack of data on the impact of C-glycosylation on flavonoid biological benefits, although it has been demonstrated that in at least some cases C-glycosylation has positive effects on properties that may be useful in human healthcare such as antioxidant and antidiabetes activity. Furthermore, there is a lack of in vivo data that would make it possible to make broad generalizations concerning the influence of glycosylation on the benefits of flavonoids for human health. It is possible that the effects of glycosylation on flavonoid bioactivity in vitro may differ from that seen in vivo. With in vivo (oral) treatment, flavonoid glycosides showed similar or even higher antidiabetes, anti-inflammatory, antidegranulating, antistress, and antiallergic activity than their flavonoid aglycones. Flavonoid glycosides keep higher plasma levels and have a longer mean residence time than those of aglycones. We should pay more attention to in vivo benefits of flavonoid glycosides, especially C-glycosides.
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Affiliation(s)
- Jianbo Xiao
- a Institute of Chinese Medical Sciences, State Key Laboratory of Quality Research in Chinese Medicine, University of Macau , Taipa , Macau.,b Institut für Pharmazie und Lebensmittelchemie, Universität Würzburg , Am Hubland , Würzburg , Germany
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Civra A, Francese R, Sinato D, Donalisio M, Cagno V, Rubiolo P, Ceylan R, Uysal A, Zengin G, Lembo D. In vitro screening for antiviral activity of Turkish plants revealing methanolic extract of Rindera lanata var. lanata active against human rotavirus. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 17:74. [PMID: 28118832 PMCID: PMC5260038 DOI: 10.1186/s12906-017-1560-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 01/04/2017] [Indexed: 11/16/2022]
Abstract
Background Human rotavirus (HRoV) is the leading cause of severe gastroenteritis in infants and children under the age of five years. No specific antiviral drug is available for HRoV infections and the treatment of viral diarrhea is mainly based on rehydration and zinc treatment. In this study, we explored medicinal plants endemic to Turkey flora as a source of anti-HRoV compunds. Methods We performed an antiviral screening on Ballota macrodonta, Salvia cryptantha and Rindera lanata extracts by focus reduction assay. The extract with the highest selectivity index (SI) was selected; its antiviral activity was further confirmed against other HRoV strains and by virus yield reduction assay. The step of viral replicative cycle putatively inhibited was investigated by in vitro assays. Results The methanolic extract of R. lanata (Boraginaceae) showed the most favourable selectivity index. This extract exhibited a dose-dependent inhibitory activity against three different HRoV strains (EC50 values ranging from 5.8 μg/ml to 25.5 μg/ml), but was inactive or barely active against other RNA viruses, namely human rhinovirus and respiratory syncytial virus. The R. lanata extract targets the early steps of HRoV infection, likely by hampering virus penetration into the cells. Conclusion These results make the R. lanata methanolic extract a promising starting material for a bioguided-fractionation aimed at identifying anti-HRoV compounds. Further work is required to isolate the active principle and assess its clinical potential.
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Noshita T, Tai A, Matsumoto T, Miura K, Ikeda K, Hamada Y. Structure-activity relationship of flavanone. Anti-degranulation activity of 7-O-substituted hesperetin. Nat Prod Res 2017; 31:2137-2142. [DOI: 10.1080/14786419.2017.1280486] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Toshiro Noshita
- Faculty of Life and Environmental Sciences, Department of Life Sciences, Prefectural University of Hiroshima, Hiroshima, Japan
| | - Akihiro Tai
- Faculty of Life and Environmental Sciences, Department of Life Sciences, Prefectural University of Hiroshima, Hiroshima, Japan
| | - Takuya Matsumoto
- Faculty of Life and Environmental Sciences, Department of Environmental Sciences, Prefectural University of Hiroshima, Hiroshima, Japan
| | - Kaori Miura
- Program in Biological System Sciences, Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Hiroshima, Japan
| | - Kaoru Ikeda
- Program in Biological System Sciences, Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, Hiroshima, Japan
| | - Yoshitomo Hamada
- Graduate School of Engineering, Osaka Electro-Communication University, Neyagawa, Japan
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Dias-Souza MV, Martins dos Santos R. Phytonutrients of Nutraceutical Importance. PHARMACEUTICAL SCIENCES 2017. [DOI: 10.4018/978-1-5225-1762-7.ch020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Phytotherapy re-emerged in the latest years as a healing system accepted and spread worldwide, and different molecules have been investigated due to their benefits to health. Nutraceutical formulations, which allow the intake of phytonutrients (generally in low levels in plant food) in concentrations that are enough to achieve the desired outcomes, represent feasible alternatives to improve general health and to prevent and treat varied diseases. Notwithstanding the incompleteness of an evidence-based clinical use of nutraceuticals, many questions remain unanswered regarding their global effects in humans and animals. Thus, the aim of this chapter is to provide recent evidence on chemical and pharmacological features of the main phytonutrients explored in nutraceutical formulations, focusing antimicrobial, antioxidant and antiproliferative potentials. Also, some insights on drug-phytonutrients interactions will be discussed.
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Jabri MA, Hajji N, Wannes D, Tounsi H, Jridi M, Abdellaoui A, Nasri M, Marzouki L, Sebai H. HPLC/PDA/ESI-MS/MS analysis of chamomile decoction and mechanism of its protective effects on aspirin-induced small bowel injuries. RSC Adv 2017. [DOI: 10.1039/c7ra07339a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The aim of the present study is to evaluate the effect of chamomile (Matricaria recutitaL.) decoction extract (CDE) on aspirin-induced small bowel injuries.
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Affiliation(s)
- Mohamed-Amine Jabri
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
| | - Najla Hajji
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
| | - Dalanda Wannes
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
| | - Haifa Tounsi
- Laboratoire d'anatomie pathologique humaine et expérimentale
- Institut Pasteur de Tunis
- Tunis 1002
- Tunisia
| | - Mourad Jridi
- Laboratoire de Génie Enzymatique et de Microbiologie
- Ecole Nationale d’Ingénieurs de Sfax
- Université de Sfax
- 3038 Sfax
- Tunisia
| | - Afifa Abdellaoui
- Laboratoire d'anatomie pathologique humaine et expérimentale
- Institut Pasteur de Tunis
- Tunis 1002
- Tunisia
| | - Moncef Nasri
- Laboratoire de Génie Enzymatique et de Microbiologie
- Ecole Nationale d’Ingénieurs de Sfax
- Université de Sfax
- 3038 Sfax
- Tunisia
| | - Lamjed Marzouki
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
| | - Hichem Sebai
- Laboratoire de Physiologie Fonctionnelle et Valorisation des Bio-Ressources
- Institut Supérieur de Biotechnologie de Béja
- Université de Jendouba
- 9000 Béja
- Tunisia
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Gandhi GR, Barreto PG, Lima BDS, Quintans JDSS, Araújo AADS, Narain N, Quintans-Júnior LJ, Gurgel RQ. Medicinal plants and natural molecules with in vitro and in vivo activity against rotavirus: A systematic review. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2016; 23:1830-1842. [PMID: 27912886 DOI: 10.1016/j.phymed.2016.11.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Revised: 11/03/2016] [Accepted: 11/04/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Rotaviruses can cause life-threatening health disorders, such as severe dehydrating gastroenteritis and diarrhea in children. Vaccination is the main preventive strategy to reduce rotavirus diarrhea and the severity of episodes, but vaccines are not fully effective and new episodes may occur, even in vaccinated children. The WHO recommends oral rehydration therapy and zinc supplementation for rotavirus-induced diarrhea management. There is little preclinical evidence to support the use of phytotherapeutics in the management of rotaviral infections. PURPOSE We aim to review the use of medicinal plants and natural molecules in the management of rotavirus infections in experimental studies. METHODS Articles, published in the English language between 1991 and 2016, were retrieved from PubMed, Scopus and Web of Science using relevant keywords. The scientific literature mainly focusing on plant natural products with therapeutic efficacies against experimental models of rotavirus, were identified and tabulated. In addition, an assessment of the reliability of animal experiments was determined under ``Risk of Bias'' criteria. CHAPTERS After an initial search and a revision of the inclusion criteria, 41 reports satisfied the objectives of the study. 36 articles were found concerning the anti-rotaviral potential in rotavirus infected cell lines. Among the active secondary metabolites screened for rotavirus inhibition, the polyphenols of flavonoid structure had acquired the highest number of studies in our survey, compared to phenolic acids, stilbenoids, tannins, pectins, terpenoids and flavonoid glycosides. Also, many phytochemicals reduced the efficacy of viral capsid proteins foremost to their elimination and improved the tendency of host-cell inhibiting virus absorption or by prevention of viral replication. Furthermore, five in vivo studies reported that herbs, as well its components, reduced the duration and severity of diarrhea in mice and piglets. The anti-rotavirus efficacy were highlighted based on improvements in reduction on liquid stool, fecal virus shedding, small intestinal histology, levels of inflammation related cytokines and signaling receptors. However, the quality of the experiments in animal studies contained certain types of bias in terms of how they were conducted and reported. CONCLUSION We identified and summarized studies on medicinal plants and natural molecules having anti-rotavirus activity in order to further future developments of cures for rotavirus gastroenteritis.
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Affiliation(s)
- Gopalsamy Rajiv Gandhi
- Division of Paediatrics, Department of Medicine, Federal University of Sergipe, Rua Cláudio Batista, s/n, Cidade Nova, Aracaju, Sergipe 49.100-000, Brazil; Laboratory of Neuroscience and Pharmacological Assays (LANEF), Department of Physiology, Federal University of Sergipe, São Cristóvão, Aracaju, Sergipe 49.100-000, Brazil; Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Aracaju, Sergipe 49.100-000, Brazil
| | - Paula Gurgel Barreto
- Department of Medicine, Tiradentes University, Avenida Murilo Dantas, 300-Bairro Farolandia, Aracaju, Sergipe 49.032-490, Brazil
| | - Bruno Dos Santos Lima
- Department of Pharmacy, Federal University of Sergipe, São Cristóvão, Aracaju, Sergipe 49.100-000, Brazil
| | - Jullyana de Souza Siqueira Quintans
- Laboratory of Neuroscience and Pharmacological Assays (LANEF), Department of Physiology, Federal University of Sergipe, São Cristóvão, Aracaju, Sergipe 49.100-000, Brazil
| | | | - Narendra Narain
- Laboratory of Flavor and Chromatographic Analysis, Federal University of Sergipe, São Cristóvão, Aracaju, Sergipe 49.100-000, Brazil
| | - Lucindo Jose Quintans-Júnior
- Laboratory of Neuroscience and Pharmacological Assays (LANEF), Department of Physiology, Federal University of Sergipe, São Cristóvão, Aracaju, Sergipe 49.100-000, Brazil.
| | - Ricardo Queiroz Gurgel
- Division of Paediatrics, Department of Medicine, Federal University of Sergipe, Rua Cláudio Batista, s/n, Cidade Nova, Aracaju, Sergipe 49.100-000, Brazil
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Karimi A, Rafieian-Kopaei M, Moradi MT, Alidadi S. Anti-Herpes Simplex Virus Type-1 Activity and Phenolic Content of Crude Ethanol Extract and Four Corresponding Fractions of Quercus brantii L Acorn. J Evid Based Complementary Altern Med 2016; 22:455-461. [PMID: 27899436 PMCID: PMC5871161 DOI: 10.1177/2156587216676421] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
This research was aimed to evaluate anti–herpes simplex virus type-1 (anti-HSV-1) activity of crude ethanol extract and 4 corresponding fractions of Quercus brantii acorn in vitro. Crude ethanol extract was prepared and subjected to fractionation with different polarity. Anti-HSV-1 activity was evaluated on baby hamster kidney cell line using MTT assay. The inhibitory effect of the plant materials on adsorption and/or post-adsorption stages of HSV-1 replication cycle were determined. Regression analysis was used to determine 50% inhibitory concentration and 50% cytotoxicity concentration, from which selective index was calculated. Based on our results, the chloroform fraction and the crude extract had the highest effect against HSV-1 with selectivity indices of 53.8 and 48.4, respectively. The n-hexane, n-butanol, and chloroform fractions inhibited HSV-1 replication in postadsorption stage (P < .001). The results obtained indicated that the chloroform fraction of Q brantii acorn with high inhibitory effect against HSV-1 replication could be a new promising anti-HSV-1 agent.
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Affiliation(s)
- Ali Karimi
- 1 Medical Plants Research Center, Shahrekord University of Medical Science, Shahrekord, Iran
| | - Mahmoud Rafieian-Kopaei
- 1 Medical Plants Research Center, Shahrekord University of Medical Science, Shahrekord, Iran
| | - Mohammad-Taghi Moradi
- 2 Students Research Committee, Shahrekord University of Medical Science, Shahrekord, Iran
| | - Somayeh Alidadi
- 3 Cellular and Molecular Research Center; Shahrekord University of Medical Science, Shahrekord, Iran
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Li HX, Wang ZC, Qian YM, Yan XQ, Lu YD, Zhu HL. Design, synthesis, and biological evaluation of chrysin derivatives as potential FabH inhibitors. Chem Biol Drug Des 2016; 89:136-140. [PMID: 27860280 DOI: 10.1111/cbdd.12839] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 05/27/2016] [Accepted: 06/11/2016] [Indexed: 12/19/2022]
Abstract
New series of chrysin derivatives (4a-4t) were designed and synthesized by introducing different substituted piperazines at C-7 position. Their inhibitory effects on FabH were evaluated using two Gram-negative bacterial strains, Escherichia coli and Pseudomonas aeruginosa, and two Gram-positive bacterial strains, Bacillus subtilis and Staphylococcus aureus. To our delight, most of these compounds exhibited a dramatic increase in inhibitory potency, compared with the control positive drugs. Among them, compound 4s exhibited the most potent inhibitory activity with IC50 values of 5.78 ± 0.24 μm inhibiting E. coli FabH and potent antibacterial activity against S. aureus and E. coli with MIC of 1.25 ± 0.01, 1.15 ± 0.12 μg/mL, respectively, comparing to the control positive drugs penicillin G (7.56 ± 0.30 μm). Docking simulation was performed to position compound 4s into the FabH active site, and the result showed that compound 4s could bind well with the FabH as potent FabH inhibitor.
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Affiliation(s)
- Hong-Xia Li
- School of Life and Food Engineering, Suzhou University, Suzhou Anhui, People's Republic of China.,State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People's Republic of China
| | - Zhong-Chang Wang
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People's Republic of China
| | - Yu-Mei Qian
- School of Life and Food Engineering, Suzhou University, Suzhou Anhui, People's Republic of China
| | - Xiao-Qiang Yan
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People's Republic of China
| | - Ya-Dong Lu
- Neonatal Medical Center, Nanjing Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu Province, China
| | - Hai-Liang Zhu
- State Key Laboratory of Pharmaceutical Biotechnology, Nanjing University, Nanjing, People's Republic of China
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Maffey L, Vega CG, Miño S, Garaicoechea L, Parreño V. Anti-VP6 VHH: An Experimental Treatment for Rotavirus A-Associated Disease. PLoS One 2016; 11:e0162351. [PMID: 27603013 PMCID: PMC5014449 DOI: 10.1371/journal.pone.0162351] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2016] [Accepted: 08/22/2016] [Indexed: 01/10/2023] Open
Abstract
Species A Rotaviruses (RVA) remain a leading cause of mortality in children under 5 years of age. Current treatment options are limited. We assessed the efficacy of two VP6-specific llama-derived heavy chain antibody fragments (VHH) -2KD1 and 3B2- as an oral prophylactic and therapeutic treatment against RVA-induced diarrhea in a neonatal mouse model inoculated with virulent murine RVA (ECw, G16P[16]I7). Joint therapeutic administration of 2KD1+3B2 (200 μg/dose) successfully reduced diarrhea duration, RVA infection severity and virus shedding in feces. While the same dose of 2KD1 or 3B2 (200 μg) significantly reduced duration of RVA-induced diarrhea, 2KD1 was more effective in diminishing the severity of intestinal infection and RVA shedding in feces, perhaps because 2KD1 presented higher binding affinity for RVA particles than 3B2. Neither prophylactic nor therapeutic administration of the VHH interfered with the host's humoral immune response against RVA. When 2KD1 (200 μg) was administered after diarrhea development, it also significantly reduced RVA intestinal infection and fecal shedding. Host antibody responses against the oral VHH treatment were not detected, nor did viral escape mutants. Our findings show that oral administration of anti-VP6 VHH constitute, not only an effective prophylactic treatment against RVA-associated diarrhea, but also a safe therapeutic tool against RVA infection, even once diarrhea is present. Anti-VP6 VHH could be used complementary to ongoing vaccination, especially in populations that have shown lower immunization efficacy. These VHH could also be scaled-up to develop pediatric medication or functional food like infant milk formulas that might help treat RVA diarrhea.
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Affiliation(s)
- Lucía Maffey
- Instituto de Virología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, INTA Castelar, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas, CONICET, Buenos Aires, Argentina
| | - Celina G. Vega
- Instituto de Virología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, INTA Castelar, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas, CONICET, Buenos Aires, Argentina
| | - Samuel Miño
- Instituto de Virología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, INTA Castelar, Buenos Aires, Argentina
| | - Lorena Garaicoechea
- Instituto de Virología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, INTA Castelar, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas, CONICET, Buenos Aires, Argentina
| | - Viviana Parreño
- Instituto de Virología, Centro de Investigaciones en Ciencias Veterinarias y Agronómicas, INTA Castelar, Buenos Aires, Argentina
- Consejo Nacional de Investigaciones Científicas y Tecnológicas, CONICET, Buenos Aires, Argentina
- * E-mail:
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Budak M, Budak GG. A new biochemical dye molecule and nuclear stain formulation in histotechnology diagnostics as an alternative to hematoxylin. J Histotechnol 2016. [DOI: 10.1179/2046023615y.0000000009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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38
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Microwave-assisted synthesis, molecular docking and antimicrobial activity of novel 2-(3-aryl,1-phenyl-1H-pyrazol-4-yl)-8H-pyrano[2,3-f]chromen-4-ones. Med Chem Res 2016. [DOI: 10.1007/s00044-016-1505-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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39
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Ahmadi A, Hassandarvish P, Lani R, Yadollahi P, Jokar A, Bakar SA, Zandi K. Inhibition of chikungunya virus replication by hesperetin and naringenin. RSC Adv 2016. [DOI: 10.1039/c6ra16640g] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Chikungunya virus (CHIKV) is an emerging arbovirus, which has recently become globally important.
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Affiliation(s)
- Azin Ahmadi
- Lab 1
- Department of Medical Microbiology
- Faculty of Medicine
- University of Malaya
- Kuala Lumpur
| | - Pouya Hassandarvish
- Lab 1
- Department of Medical Microbiology
- Faculty of Medicine
- University of Malaya
- Kuala Lumpur
| | - Rafidah Lani
- Lab 1
- Department of Medical Microbiology
- Faculty of Medicine
- University of Malaya
- Kuala Lumpur
| | - Pedram Yadollahi
- Lab 1
- Department of Medical Microbiology
- Faculty of Medicine
- University of Malaya
- Kuala Lumpur
| | - Amin Jokar
- Lab 1
- Department of Medical Microbiology
- Faculty of Medicine
- University of Malaya
- Kuala Lumpur
| | - Sazaly Abu Bakar
- Tropical Infectious Disease Research and Education Center (TIDREC)
- Department of Medical Microbiology Faculty of Medicine
- University of Malaya
- Kuala Lumpur
- Malaysia
| | - Keivan Zandi
- Lab 1
- Department of Medical Microbiology
- Faculty of Medicine
- University of Malaya
- Kuala Lumpur
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Ogo Y, Mori T, Nakabayashi R, Saito K, Takaiwa F. Transgenic rice seed expressing flavonoid biosynthetic genes accumulate glycosylated and/or acylated flavonoids in protein bodies. JOURNAL OF EXPERIMENTAL BOTANY 2016; 67:95-106. [PMID: 26438413 PMCID: PMC4682426 DOI: 10.1093/jxb/erv429] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Plant-specialized (or secondary) metabolites represent an important source of high-value chemicals. In order to generate a new production platform for these metabolites, an attempt was made to produce flavonoids in rice seeds. Metabolome analysis of these transgenic rice seeds using liquid chromatography-photodiode array-quadrupole time-of-flight mass spectrometry was performed. A total of 4392 peaks were detected in both transgenic and non-transgenic rice, 20-40% of which were only detected in transgenic rice. Among these, 82 flavonoids, including 37 flavonols, 11 isoflavones, and 34 flavones, were chemically assigned. Most of the flavonols and isoflavones were O-glycosylated, while many flavones were O-glycosylated and/or C-glycosylated. Several flavonoids were acylated with malonyl, feruloyl, acetyl, and coumaroyl groups. These glycosylated/acylated flavonoids are thought to have been biosynthesized by endogenous rice enzymes using newly synthesized flavonoids whose biosynthesis was catalysed by exogenous enzymes. The subcellular localization of the flavonoids differed depending on the class of aglycone and the glycosylation/acylation pattern. Therefore, flavonoids with the intended aglycones were efficiently produced in rice seeds via the exogenous enzymes introduced, while the flavonoids were variously glycosylated/acylated by endogenous enzymes. The results suggest that rice seeds are useful not only as a production platform for plant-specialized metabolites such as flavonoids but also as a tool for expanding the diversity of flavonoid structures, providing novel, physiologically active substances.
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Affiliation(s)
- Yuko Ogo
- Transgenic Crop Research and Development Centre, National Institute of Agrobiological Sciences (NIAS), Tsukuba, Ibaraki, Japan
| | - Tetsuya Mori
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Ryo Nakabayashi
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan
| | - Kazuki Saito
- RIKEN Center for Sustainable Resource Science, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Chuo-ku, Chiba 260-8675, Japan
| | - Fumio Takaiwa
- Transgenic Crop Research and Development Centre, National Institute of Agrobiological Sciences (NIAS), Tsukuba, Ibaraki, Japan
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Téllez MA, Téllez AN, Vélez F, Ulloa JC. In vitro antiviral activity against rotavirus and astrovirus infection exerted by substances obtained from Achyrocline bogotensis (Kunth) DC. (Compositae). BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:428. [PMID: 26630872 PMCID: PMC4668688 DOI: 10.1186/s12906-015-0949-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2015] [Accepted: 11/25/2015] [Indexed: 01/19/2023]
Abstract
BACKGROUND Achyrocline bogotensis has been traditionally used to treat infections of skin, respiratory, tract urinary and other infections, but not to treat viral gastrointestinal disease. In this study, this Colombian native medicinal plant was investigated by its in vitro anti-rotavirus and anti-astrovirus activity. METHODS Several extracts and fractions phytochemically obtained from A. bogotensis were evaluated initially for their cell toxicity on MA104 and Caco2 cells and then for their anti-rotavirus (RRV) and anti-astrovirus (Yuc8) activity following three strategies: pre-treatment of cells (blocking effect), direct viral activity (virucidal effect) and post-treatment of infected cells (reduction of viral yield post-infection). In addition qualitative chemical studies were developed for the active compounds. RESULTS Non-toxic concentrations of a fraction obtained exhibited antiviral activity against both viruses characterized by a virucidal effect and by the reduction of the infectious particles produced post-infection. Steroids, sterols, terpenes, phenols, flavonoids and sesquiterpenlactones were identified qualitatively in the active fraction. CONCLUSIONS A. bogotensis contains substances with in vitro antiviral activity against rotavirus and astrovirus. This study confirms their anti-microbial properties and describes by the first time its antiviral activity in vitro.
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Affiliation(s)
- M A Téllez
- Laboratorio de Virología, Departamento de Microbiología, Facultad de Ciencias, Grupo de Enfermedades Infecciosas, Pontificia Universidad Javeriana, Cra. 7 # 43-82, Bogotá, Colombia
| | - A N Téllez
- Laboratorio de Fitoquímica, Departamento de Química, Facultad de Ciencias, Grupo de Investigación en Fitoquímica, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - F Vélez
- Departamento de Matemáticas, Grupo de Investigación Signos, Universidad El Bosque, Bogotá, Colombia
| | - J C Ulloa
- Laboratorio de Virología, Departamento de Microbiología, Facultad de Ciencias, Grupo de Enfermedades Infecciosas, Pontificia Universidad Javeriana, Cra. 7 # 43-82, Bogotá, Colombia.
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Controlling Rotavirus-associated diarrhea: Could single-domain antibody fragments make the difference? Rev Argent Microbiol 2015; 47:368-79. [PMID: 26654700 DOI: 10.1016/j.ram.2015.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 09/15/2015] [Accepted: 09/21/2015] [Indexed: 12/30/2022] Open
Abstract
Group A Rotavirus (RVA) remains a leading cause of severe diarrhea and child mortality. The variable domain of camelid heavy chain antibodies (VHH) display potent antigen-binding capacity, have low production costs and are suitable for oral therapies. Two sets of anti-RVA VHHs have been developed: ARP1-ARP3; 2KD1-3B2. Here, we explore the potential of both sets as a prevention strategy complementary to vaccination and a treatment option against RVA-associated diarrhea in endangered populations. Both sets have been expressed in multiple production systems, showing extensive neutralizing capacity against strains of RVA in vitro. They were also tested in the neonatal mouse model with various degrees of success in preventing or treating RVA-induced diarrhea. Interestingly, mitigation of the symptoms was also achieved with freeze-dried ARP1, so that it could be applied in areas where cold chains are difficult to maintain. 3B2 was tested in a pre-clinical trial involving gnotobiotic piglets where it conferred complete protection against RVA-induced diarrhea. ARP1 was used in the first clinical trial for anti-RVA VHHs, successfully reducing stool output in infants with RVA diarrhea, with no detected side effects.
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Iranshahi M, Rezaee R, Parhiz H, Roohbakhsh A, Soltani F. Protective effects of flavonoids against microbes and toxins: The cases of hesperidin and hesperetin. Life Sci 2015; 137:125-32. [PMID: 26188593 DOI: 10.1016/j.lfs.2015.07.014] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 06/13/2015] [Accepted: 07/11/2015] [Indexed: 10/23/2022]
Abstract
Many plants produce flavonoids as secondary metabolites. These organic compounds may be involved in the defense against plant-threatening factors, such as microbes and toxins. Certain flavonoids protect their origin source against plant pathogens, but they also exhibit potential healthy properties in human organisms. Hesperidin (Hsd) and its aglycone, hesperetin (Hst), are two flavonoids from the Citrus species that exhibit various biological properties, including antioxidant, antiinflammatory and anticancer effects. Recent studies indicated that Hst and Hsd possess antimicrobial activity. Although the exact mechanisms behind their antimicrobial properties are not fully understood, several mechanisms such as the activation of the host immune system, bacterial membrane disruption, and interference with microbial enzymes, have been proposed. Hsd and Hst may also have protective effects against toxicity induced by various agents. These natural substances may contribute to the protection of cells and tissues through their antioxidant and radical scavenging activities. This review discusses the protective activities of Hsd and Hst against microbes and several toxicities induced by oxidants, chemicals, toxins, chemotherapy and radiotherapy agents, which were reported in vitro and in vivo. Furthermore, the probable mechanisms behind these activities are discussed.
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Affiliation(s)
- Mehrdad Iranshahi
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ramin Rezaee
- Department of Physiology and Pharmacology, School of Medicine, North Khorasan University of Medical Sciences, Bojnurd, Iran
| | - Hamideh Parhiz
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Ali Roohbakhsh
- Pharmaceutical Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Fatemeh Soltani
- Biotechnology Research Center, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Pharmaceutical Biotechnology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran.
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Lipson SM, Ozen FS, Louis S, Karthikeyan L. Comparison of α-glucosyl hesperidin of citrus fruits and epigallocatechin gallate of green tea on the Loss of Rotavirus Infectivity in Cell Culture. Front Microbiol 2015; 6:359. [PMID: 25972850 PMCID: PMC4413797 DOI: 10.3389/fmicb.2015.00359] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 04/09/2015] [Indexed: 12/02/2022] Open
Abstract
A number of secondary plant metabolites (e.g., flavonoids) possess antiviral/antimicrobial activity. Most flavonoids, however, are difficult to study, as they are immiscible in water-based systems. The relatively new semisynthetic α-glucosyl hesperitin (GH), and the natural plant product epigallocatechin gallate (EGCG) are unique among most flavonoids, as these flavonoids are highly soluble. The antiviral activity of these plant metabolites were investigated using the rotavirus as a model enteric virus system. Direct loss of virus structural integrity in cell-free suspension and titration of amplified RTV in host cell cultures was measured by a quantitative enzyme-linked immunosorbent assay (qEIA). After 30 min. 100 × 10(3) μg/ml GH reduced RTV antigen levels by ca. 90%. The same compound reduced infectivity (replication in cell culture) by a similar order of magnitude 3 to 4 days post inoculation. After 3 days in culture, EGCG concentrations of 80, 160, and 320 μg/ml reduced RTV infectivity titer levels to ca. 50, 20, and 15% of the control, respectively. Loss of RTV infectivity titers occurred following viral treatment by parallel testing of both GH and EGCG, with the latter, markedly more effective. Cytotoxicity testing showed no adverse effects by the phenolic concentrations used in this study. The unique chemical structure of each flavonoid rather than each phenolic's inherent solubility may be ascribed to those marked differences between each molecule's antiviral (anti-RTV) effects. The solubility of EGCG and GH obviated our need to use potentially confounding or obfuscating carrier molecules (e.g., methanol, ethanol, DMSO) denoting our use of a pure system environ. Our work further denotes the need to address the unique chemical nature of secondary plant metabolites before any broad generalizations in flavonoid (antiviral) activity may be proposed.
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Affiliation(s)
- Steven M. Lipson
- Department of Biology and Health Promotions, St. Francis College, BrooklynNY, USA
| | - Fatma S. Ozen
- Department of Biology and Health Promotions, St. Francis College, BrooklynNY, USA
| | - Samantha Louis
- Department of Biology and Health Promotions, St. Francis College, BrooklynNY, USA
| | - Laina Karthikeyan
- Department of Biology, New York City College of Technology, The City University of New YorkBrooklyn, NY, USA
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Dwivedi P, Mishra KB, Mishra BB, Singh N, Singh RK, Tiwari VK. Click inspired synthesis of antileishmanial triazolyl O-benzylquercetin glycoconjugates. Glycoconj J 2015; 32:127-40. [DOI: 10.1007/s10719-015-9582-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Revised: 02/12/2015] [Accepted: 03/13/2015] [Indexed: 10/23/2022]
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Bioavailability of dietary polyphenols and gut microbiota metabolism: antimicrobial properties. BIOMED RESEARCH INTERNATIONAL 2015; 2015:905215. [PMID: 25802870 PMCID: PMC4352739 DOI: 10.1155/2015/905215] [Citation(s) in RCA: 448] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 10/13/2014] [Accepted: 10/19/2014] [Indexed: 02/07/2023]
Abstract
Polyphenolic compounds are plant nutraceuticals showing a huge structural diversity, including chlorogenic acids, hydrolyzable tannins, and flavonoids (flavonols, flavanones, flavan-3-ols, anthocyanidins, isoflavones, and flavones). Most of them occur as glycosylated derivatives in plants and foods. In order to become bioactive at human body, these polyphenols must undergo diverse intestinal transformations, due to the action of digestive enzymes, but also by the action of microbiota metabolism. After elimination of sugar tailoring (generating the corresponding aglycons) and diverse hydroxyl moieties, as well as further backbone reorganizations, the final absorbed compounds enter the portal vein circulation towards liver (where other enzymatic transformations take place) and from there to other organs, including behind the digestive tract or via blood towards urine excretion. During this transit along diverse tissues and organs, they are able to carry out strong antiviral, antibacterial, and antiparasitic activities. This paper revises and discusses these antimicrobial activities of dietary polyphenols and their relevance for human health, shedding light on the importance of polyphenols structure recognition by specific enzymes produced by intestinal microbial taxa.
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Biotransformations and biological activities of hop flavonoids. Biotechnol Adv 2015; 33:1063-90. [PMID: 25708386 DOI: 10.1016/j.biotechadv.2015.02.009] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 02/13/2015] [Accepted: 02/16/2015] [Indexed: 12/13/2022]
Abstract
Female hop cones are used extensively in the brewing industry, but there is now increasing interest in possible uses of hops for non-brewing purposes, especially in the pharmaceutical industry. Among pharmaceutically important compounds from hops are flavonoids, having proven anticarcinogenic, antioxidant, antimicrobial, anti-inflammatory and estrogenic effects. In this review we aim to present current knowledge on the biotransformation of flavonoids from hop cones with respect to products, catalysis and conversion. A list of microbial enzymatic reactions associated with gastrointestinal microbiota is presented. A comparative analysis of the biological activities of hop flavonoids and their biotransformation products is described, indicating where further research has potential for applications in the pharmaceutical industry.
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Fonseca SF, Lima DB, Alves D, Jacob RG, Perin G, Lenardão EJ, Savegnago L. Synthesis, characterization and antioxidant activity of organoselenium and organotellurium compound derivatives of chrysin. NEW J CHEM 2015. [DOI: 10.1039/c4nj02329c] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
New selenium and tellurium containing chrysin derivatives were synthesized and their antioxidant activities were evaluated. Butyltelluro-chrysin presented better antioxidant activities.
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Affiliation(s)
- Sergio F. Fonseca
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel
- CEP 96010-900
- Pelotas
- Brazil
| | - David B. Lima
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel
- CEP 96010-900
- Pelotas
- Brazil
| | - Diego Alves
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel
- CEP 96010-900
- Pelotas
- Brazil
| | - Raquel G. Jacob
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel
- CEP 96010-900
- Pelotas
- Brazil
| | - Gelson Perin
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel
- CEP 96010-900
- Pelotas
- Brazil
| | - Eder João Lenardão
- Laboratório de Síntese Orgânica Limpa - LASOL - CCQFA - Universidade Federal de Pelotas - UFPel
- CEP 96010-900
- Pelotas
- Brazil
| | - Lucielli Savegnago
- Grupo de Pesquisa em Neurobiotecnologia - GPN
- CDTec
- Universidade Federal de Pelotas
- UFPel
- Pelotas
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Inhibitory Effect of a Hot-Water Extract of Leaves of Japanese Big-Leaf Magnolia (Magnolia obovata) on Rotavirus-Induced Diarrhea in Mouse Pups. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 2014:365831. [PMID: 25580150 PMCID: PMC4279284 DOI: 10.1155/2014/365831] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 11/24/2014] [Indexed: 11/17/2022]
Abstract
The leaf of Japanese big-leaf magnolia (Magnolia obovata Thunb.) has long been used as a natural packaging material for traditional foods in Japan. However, many of the physiological functions of the leaves against oral infection and resultant illness remain unclear. The aim of the present study was to investigate the effects of a hot-water extract of the leaves of Magnolia obovata on diarrhea induced by rotavirus (RV), a major cause of acute diarrhea. RV strain SA11 was mixed with the M. obovata leaf extract and inoculated orally to neonatal BALB/c mouse pups. Simultaneous inoculation of SA11 with the extract significantly decreased the incidence of diarrhea. In addition, the extract significantly inhibited cytopathic effects and mRNA expression of viral proteins in SA11-infected MA104 cells. Two flavonoid glycosides, quercitrin and rutin, were strongly suggested to be major anti-RV agents in the extract by serial solvent extraction and reversed-phase HPLC-ESI-MS analysis. Our results suggest that the hot-water extract of M. obovata leaves can be used as a medicine or food additive to prevent and ameliorate RV-induced diarrhea in individuals that may have difficulty in benefitting from the RV vaccines.
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Šimčíková D, Kotik M, Weignerová L, Halada P, Pelantová H, Adamcová K, Křen V. α-L
-Rhamnosyl-β-D
-glucosidase (Rutinosidase) from Aspergillus niger
: Characterization and Synthetic Potential of a Novel Diglycosidase. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400566] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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