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Tadege G, Dagne A, Bizuneh GK, Abebe D, Nureye D. Efficacy of Albizia malacophylla (A.Rich.) Walp. (Leguminosae) methanol (80%) leaf extract and solvent fractions against Plasmodium berghei-induced malaria in mice model. JOURNAL OF ETHNOPHARMACOLOGY 2024; 333:118413. [PMID: 38824975 DOI: 10.1016/j.jep.2024.118413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 05/29/2024] [Accepted: 05/30/2024] [Indexed: 06/04/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Novel drugs are needed to address the issue of malarial infection resistance; natural items can be a different source of these medications. Albizia malacophylla (A. Rich.) Walp. (Leguminosae) is listed as one of the antimalarial medicinal plants in Ethiopian folk medicine. However, there are no reports regarding the biological activity or phytochemistry of the plant. AIM OF THE STUDY Thus, this study aimed to evaluate the A. malacophylla crude extract and solvent fractions' in vivo antimalarial activity utilizing 4-day suppressive, preventative, and curative tests in mice infected with P. berghei. MATERIALS AND METHODS The parasite Plasmodium berghei, which causes rodent malaria, was used to infect healthy male Swiss Albino mice, weighing 23-28 g and aged 6-8 weeks. Solvent fractions such as methanol, water, and chloroform were given in addition to an 80% methanolic extract at 100, 200, and 400 mg/kg doses. A Conventional test such as parasitemia, survival time, body weight, temperature, and packed cell capacity were employed to ascertain factors such as the suppressive, curative, and preventive tests. RESULTS Every test substance dramatically reduced the number of parasites in every experiment. Crude extract (with the highest percentage suppression of 67.78%) performs better antimalarial effect than the methanol fraction, which is the most efficient solvent fraction with a percentage suppression of 55.74%. With a suppression value of 64.83% parasitemia level, the therapeutic effects of 80% methanolic crude extract were greater than its curative and preventative effects in a four-day suppressive test. The survival period (17 days) was longer with the hydroalcoholic crude extract dose of 400 mg/kg than with other doses of the materials under investigation. CONCLUSIONS The results of this investigation validate the antimalarial characteristics of A. malacophylla leaf extract. The crude extract prevented weight loss, a decline in temperature, and a reduction in PCV. The results demonstrate that the plant has a promising antimalarial effect against P. berghei, hence supporting the traditional use of the plant. Therefore, it could serve as a foundation for the development of new antimalarial drugs.
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Affiliation(s)
- Getnet Tadege
- Department of Pharmacy, College of Medicine and Health Sciences, Debre Markos University, Northwest, Ethiopia.
| | - Abebe Dagne
- Department of Pharmacy, College of Medicine and Health Sciences, Debre Markos University, Northwest, Ethiopia
| | - Gizachew Kassahun Bizuneh
- Department of Pharmacognosy, School of Pharmacy, College of Medicine and Health Sciences, University of Gondar, Ethiopia
| | - Dehnnet Abebe
- Department of Pharmacy, College of Medicine and Health Sciences, Debre Markos University, Northwest, Ethiopia.
| | - Dejen Nureye
- School of Pharmacy, Institute of Health, Jimma University, Jimma, Oromia, Ethiopia; School of Pharmacy, College of Medicine and Health Sciences, Mizan-Tepi University, Southwest, Ethiopia
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Tzimas K, Antoniadou M, Varzakas T, Voidarou C(C. Plant-Derived Compounds: A Promising Tool for Dental Caries Prevention. Curr Issues Mol Biol 2024; 46:5257-5290. [PMID: 38920987 PMCID: PMC11201632 DOI: 10.3390/cimb46060315] [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: 04/27/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 06/27/2024] Open
Abstract
There is a growing shift from the use of conventional pharmaceutical oral care products to the use of herbal extracts and traditional remedies in dental caries prevention. This is attributed to the potential environmental and health implications of contemporary oral products. This comprehensive review aims at the analysis of plant-derived compounds as preventive modalities in dental caries research. It focuses on data collected from 2019 until recently, trying to emphasize current trends in this topic. The research findings suggest that several plant-derived compounds, either aqueous or ethanolic, exhibit notable antibacterial effects against Streptococcus mutans and other bacteria related to dental caries, with some extracts demonstrating an efficacy comparable to that of chlorhexidine. Furthermore, in vivo studies using plant-derived compounds incorporated in food derivatives, such as lollipops, have shown promising results by significantly reducing Streptococcus mutans in high-risk caries children. In vitro studies on plant-derived compounds have revealed bactericidal and bacteriostatic activity against S. mutans, suggesting their potential use as dental caries preventive agents. Medicinal plants, plant-derived phytochemicals, essential oils, and other food compounds have exhibited promising antimicrobial activity against oral pathogens, either by their anti-adhesion activity, the inhibition of extracellular microbial enzymes, or their direct action on microbial species and acid production. However, further research is needed to assess their antimicrobial activity and to evaluate the cytotoxicity and safety profiles of these plant-derived compounds before their widespread clinical use can be recommended.
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Affiliation(s)
- Konstantinos Tzimas
- Department of Operative Dentistry, National and Kapodistrian University of Athens, 11521 Athens, Greece;
| | - Maria Antoniadou
- Department of Operative Dentistry, National and Kapodistrian University of Athens, 11521 Athens, Greece;
| | - Theodoros Varzakas
- Department of Food Science and Technology, University of the Peloponnese, 24100 Kalamata, Greece;
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Dong H, Liao L, Long B, Che Y, Peng T, He Y, Mei L, Xu B. Total Synthesis and Antibacterial Evaluation of Lupinifolin and Its Natural Analogues. JOURNAL OF NATURAL PRODUCTS 2024. [PMID: 38373268 DOI: 10.1021/acs.jnatprod.4c00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
In this study, lupinifolin (1) and its natural analogues, mundulin (2), minimiorin (3), khonklonginol H (4), flemichin D (5), and eriosemaone A (27), were obtained by chemical synthesis for the first time. Key steps involved an electrocyclization to build the linear pyran rings and a Claisen/Cope rearrangement to install the 8-prenyl substituents. All compounds were assessed for their in vitro antimicrobial activities against clinically relevant human pathogens, including one Gram-negative bacterial strain (E. coli ATCC 25922) and four Gram-positive bacterial strains (S. aureus ATCC 29213, E. faecalis ATCC 29212, MRSA21-5, and VRE ATCC 51299). The result indicated that eriosemaone A (27) was the most potent one against Gram-positive bacteria, with minimum inhibitory concentrations in the range of 0.25-0.5 μg/mL. Mechanistic studies indicated that 27 has good membrane-targeting ability to bacterial inner membranes and can bind to phosphatidylglycerol and cardiolipin in bacterial membranes, thereby disrupting the bacterial cell membranes and causing bacterial death.
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Affiliation(s)
- Hongbo Dong
- Engineering Research Center for Pharmaceuticals and Equipment of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
| | - Li Liao
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
| | - Bin Long
- Engineering Research Center for Pharmaceuticals and Equipment of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
| | - Yufei Che
- Engineering Research Center for Pharmaceuticals and Equipment of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
| | - Ting Peng
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
| | - Yujiao He
- Anti-infective Agent Creation Engineering Research Centre of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
| | - Ling Mei
- Engineering Research Center for Pharmaceuticals and Equipment of Sichuan Province, School of Pharmacy, Chengdu University, Chengdu 610106, People's Republic of China
| | - Bing Xu
- Department of Pediatric Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu 610072, People's Republic of China
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Jiang W, Xie Z, Huang S, Huang Q, Chen L, Gao X, Lin Z. Targeting cariogenic pathogens and promoting competitiveness of commensal bacteria with a novel pH-responsive antimicrobial peptide. J Oral Microbiol 2022; 15:2159375. [PMID: 36570976 PMCID: PMC9788686 DOI: 10.1080/20002297.2022.2159375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Novel ecological antimicrobial approaches to dental caries focus on inhibiting cariogenic pathogens while enhancing the growth of health-associated commensal communities or suppressing cariogenic virulence without affecting the diversity of oral microbiota, which emphasize the crucial role of establishing a healthy microbiome in caries prevention. Considering that the acidified cariogenic microenvironment leads to the dysbiosis of microecology and demineralization of enamel, exploiting the acidic pH as a bioresponsive trigger to help materials and medications target cariogenic pathogens is a promising strategy to develop novel anticaries approaches. In this study, a pH-responsive antimicrobial peptide, LH12, was designed utilizing the pH-sensitivity of histidine, which showed higher cationicity and stronger interactions with bacterial cytomembranes at acidic pH. Streptococcus mutans was used as the in vitro caries model to evaluate the inhibitory effects of LH12 on the cariogenic properties, such as biofilm formation, biofilm morphology, acidurance, acidogenicity, and exopolysaccharides synthesis. The dual-species model of Streptococcus mutans and Streptococcus gordonii was established in vitro to evaluate the regulation effects of LH12 on the mixed species microbial community containing both cariogenic bacteria and commensal bacteria. LH12 suppressed the cariogenic properties and regulated the bacterial composition to a healthier condition through a dual-functional mechanism. Firstly, LH12-targeted cariogenic pathogens in response to the acidified microenvironment and suppressed the cariogenic virulence by inhibiting the expression of multiple virulence genes and two-component signal transduction systems. Additionally, LH12 elevated H2O2 production of the commensal bacteria and subsequently improved the ecological competitiveness of the commensals. The dual-functional mechanism made LH12 a potential bioresponsive approach to caries management.
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Affiliation(s)
- Wentao Jiang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, GuangdongChina
| | - Zhuo Xie
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, GuangdongChina
| | - Shuheng Huang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, GuangdongChina
| | - Qiting Huang
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, GuangdongChina
| | - Lingling Chen
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, GuangdongChina
| | - Xianling Gao
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, GuangdongChina
| | - Zhengmei Lin
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, GuangdongChina,CONTACT Zhengmei Lin Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong510055, China
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Phytochemical profiling, in vitro biological activities, and in-silico molecular docking studies of Typha domingensis. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2022.104133] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Lv S, Wang J, You R, Liu S, Ding Y, Hadianamrei R, Tomeh MA, Pan F, Cai Z, Zhao X. Highly selective performance of rationally designed antimicrobial peptides based on ponericin-W1. Biomater Sci 2022; 10:4848-4865. [PMID: 35861280 DOI: 10.1039/d2bm00744d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Antimicrobial peptides (AMPs) or host-defence peptides act by penetrating and disrupting the bacterial membranes and are therefore less prone to antimicrobial resistance (AMR) compared to conventional antibiotics. However, there are still many challenges in the clinical application of the naturally occurring AMPs which necessitates further studies to establish the relationship between the chemical structure of AMPs and their antimicrobial activity and selectivity. Herein, we report a study on the relationship between the chemical structure and the biological activity of a series of rationally designed AMPs derived from Ponericin-W1, a naturally occurring AMP from ants. The peptides were designed by modification of the hydrophobic and hydrophilic regions of the lead peptide sequence in a systematic way. Their antibacterial and hemolytic activities were determined in vitro. The antibacterial activity of a representative peptide, At5 was also tested in a mouse model of skin wound infection. Furthermore, the relationship between the physicochemical properties of the peptides and their antibacterial activity was investigated. Replacing the cationic amino acids in the hydrophobic region of the peptides with hydrophobic amino acids enhanced their antibacterial activity and increasing the number of cationic amino acids in the hydrophilic region reduced their toxicity to human red blood cells and thus improved their selectivity for bacteria. Four of the designed peptides, coded as At3, At5, At8, and At10, displayed considerable antibacterial activity and high selectivity for bacteria. At5 also accelerated the wound healing in mice indicating high in vivo efficiency of this peptide. The peptides were more effective against Gram-negative bacteria and no AMR was developed against them in the bacteria even after 25 generations. The results from this study can provide a better understanding of the structural features required for strong antibacterial activity and selectivity, and serve as a guide for the future rational design of AMPs.
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Affiliation(s)
- Songwei Lv
- School of Pharmacy, Changzhou University, Changzhou 213164, China.
| | - Jingfang Wang
- School of Pharmacy, Changzhou University, Changzhou 213164, China.
| | - Rongrong You
- School of Pharmacy, Changzhou University, Changzhou 213164, China.
| | - Suyu Liu
- School of Pharmacy, Changzhou University, Changzhou 213164, China. .,Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Yujie Ding
- School of Pharmacy, Changzhou University, Changzhou 213164, China.
| | - Roja Hadianamrei
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Mhd Anas Tomeh
- Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
| | - Fang Pan
- School of Pharmacy, Changzhou University, Changzhou 213164, China.
| | - Zhiqiang Cai
- School of Pharmacy, Changzhou University, Changzhou 213164, China.
| | - Xiubo Zhao
- School of Pharmacy, Changzhou University, Changzhou 213164, China. .,Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK
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Zhuo H, Zhang X, Li M, Zhang Q, Wang Y. Antibacterial and Anti-Inflammatory Properties of a Novel Antimicrobial Peptide Derived from LL-37. Antibiotics (Basel) 2022; 11:antibiotics11060754. [PMID: 35740160 PMCID: PMC9220503 DOI: 10.3390/antibiotics11060754] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 05/25/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023] Open
Abstract
Peri-implantitis is a pathological condition involving tissues around dental implants that are characterized by inflammation of the peri-implant mucosa and progressive loss of supporting bone. We found that the antimicrobial peptide KR-12-3 (KRIVKWIKKFLR) derived from LL-37 had antibacterial properties against Streptococcus gordonii. The purpose of this study was to evaluate its antibacterial and anti-inflammatory activities and its underlying mechanisms. We evaluated the antibacterial activities of antimicrobial peptides in planktonic and biofilm states by measuring their minimum inhibitory concentration, minimum bactericidal concentration, and biofilm susceptibility. The effects of antimicrobial peptides on the production of IL-6 and IL-8 in LPS-stimulated RAW264.7 cells were detected by enzyme-linked immunosorbent assay and other experiments, and their toxicity to MC3T3-E1 cells was also studied. While maintaining low cytotoxicity, KR-12-3 exhibited growth inhibitory effects on S. gordonii in planktonic and biofilm states. Lower concentrations of KR-12-3 treatment reduced the production of inflammatory cytokines in LPS-stimulated RAW264.8 cells. The mechanisms underlying the inhibition of biofilm formation and anti-inflammatory effects have been associated with the low expression of related genes. KR-12-3 may be used to develop an antibacterial, anti-infective, and anti-inflammatory drugs for peri-implantitis.
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Rattanakiat S, Taensantia A, Jaemamporn K, Khamnuanin S, Mudjupa C, Jaruchotikamol A, Pulbutr P. Antibiofilm Formation Activity of Lupinifolin Against Methicillin-Resistant Staphylococcus aureus. Pak J Biol Sci 2022; 25:961-970. [PMID: 36591926 DOI: 10.3923/pjbs.2022.961.970] [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: 11/22/2022]
Abstract
<b>Background and Objective:</b> Biofilm formation activity of Methicillin-resistant <i>Staphylococcus aureus</i> (MRSA) is one of the crucial factors rendering this pathogenic bacterium difficult to be eradicated. It has been reported that lupinifolin, is a major phytochemical agent isolated from <i>Derris reticulata</i> Craib. stem possesses antibacterial activity against MRSA. This study aimed to investigate the effects of lupinifolin and its combinations with some antibacterial drugs, including ampicillin, cloxacillin or vancomycin, on the biofilm formation activity of MRSA. <b>Materials and Methods:</b> The crystal violet biofilm formation assay was performed to evaluate the biofilm formation activity. <b>Results:</b> Lupinifolin produced a significant inhibitory activity against MRSA biofilm formation with the median inhibitory concentration (IC<sub>50</sub>) of 7.96±3.05 μg mL<sup>1</sup> (n = 6) at 24 hrs incubation. Lupinifolin at the concentrations of sub-MICs (1, 2, 4 and 8 μg mL<sup>1</sup>) combined with the antibacterial drugs at their sub-MICs also exhibited substantial antibiofilm formation activities. The maximal antibiofilm activity was found with the combination of lupinifolin (8 μg mL<sup>1</sup>) and vancomycin (1 μg mL<sup>1</sup>) by the percentage inhibition of 102.39±0.89 (n = 8). The antibiofilm formation activities of the combinations between lupinifolin and the antibacterial drugs at various concentrations tested were also significantly higher than those of lupinifolin alone. <b>Conclusion:</b> These results indicated that lupinifolin can potentially be developed as an antibacterial enhancer for the management of biofilm-associated bacterial infections caused by MRSA, in which the current pharmacological treatment is still limited.
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Li M, Yang Y, Lin C, Zhang Q, Gong L, Wang Y, Zhang X. Antibacterial Properties of Small-Size Peptide Derived from Penetratin against Oral Streptococci. MATERIALS 2021; 14:ma14112730. [PMID: 34064259 PMCID: PMC8196835 DOI: 10.3390/ma14112730] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 05/03/2021] [Accepted: 05/16/2021] [Indexed: 12/25/2022]
Abstract
Periodontitis, an infectious disease originating from dental biofilms that causes the irreversible loss of alveolar bone, is accompanied by gradual biofilm formation and the continuous progression of inflammation. A small peptide derived from penetratin, Arg-Gln-Ile-Arg-Arg-Trp-Trp-Gln-Arg-NH2 (RR9), appears to have antibacterial properties against selected strains associated with periodontitis. The purpose of this research is to assess the antibacterial activity and mechanism of RR9 against the initial oral colonizers Streptococci oralis, Streptococci gordonii, and Streptococci sanguinis and to investigate the cytotoxicity of RR9 on human gingival fibroblasts in vitro. The effects of RR9 on the initial oral settlers of planktonic and biofilm states were evaluated by measuring the MIC, MBC, bactericidal kinetics, and antibiofilm activity. Visual evidence and antibacterial mechanisms were identified, and the anti-inflammatory activity and cytotoxicity were measured. The results demonstrated that RR9 can inhibit the growth of streptococci in the planktonic state and during biofilm formation in vitro while keeping a low toxicity against eukaryotic cells. The antibacterial mechanism was proven to be related to the lower expression of sspA in streptococci. RR9 may be used as a potential antimicrobial and anti-infective agent for periodontal disease.
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Affiliation(s)
- Meng Li
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
| | - Yanyan Yang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Affiliated Stomatology Hospital of Guangzhou Medical University, Guangzhou 510150, China
| | - Chen Lin
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Fengtai Maternal & Child Health Hospital, Beijing 100069, China
| | - Qian Zhang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
| | - Lei Gong
- Department of Esophageal Cancer, Tianjin’s Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300070, China;
| | - Yonglan Wang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Correspondence: (Y.W.); (X.Z.)
| | - Xi Zhang
- School and Hospital of Stomatology, Tianjin Medical University, 12 Observatory Road, Tianjin 300070, China; (M.L.); (Y.Y.); (C.L.); (Q.Z.)
- Correspondence: (Y.W.); (X.Z.)
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Porras G, Chassagne F, Lyles JT, Marquez L, Dettweiler M, Salam AM, Samarakoon T, Shabih S, Farrokhi DR, Quave CL. Ethnobotany and the Role of Plant Natural Products in Antibiotic Drug Discovery. Chem Rev 2021; 121:3495-3560. [PMID: 33164487 PMCID: PMC8183567 DOI: 10.1021/acs.chemrev.0c00922] [Citation(s) in RCA: 138] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The crisis of antibiotic resistance necessitates creative and innovative approaches, from chemical identification and analysis to the assessment of bioactivity. Plant natural products (NPs) represent a promising source of antibacterial lead compounds that could help fill the drug discovery pipeline in response to the growing antibiotic resistance crisis. The major strength of plant NPs lies in their rich and unique chemodiversity, their worldwide distribution and ease of access, their various antibacterial modes of action, and the proven clinical effectiveness of plant extracts from which they are isolated. While many studies have tried to summarize NPs with antibacterial activities, a comprehensive review with rigorous selection criteria has never been performed. In this work, the literature from 2012 to 2019 was systematically reviewed to highlight plant-derived compounds with antibacterial activity by focusing on their growth inhibitory activity. A total of 459 compounds are included in this Review, of which 50.8% are phenolic derivatives, 26.6% are terpenoids, 5.7% are alkaloids, and 17% are classified as other metabolites. A selection of 183 compounds is further discussed regarding their antibacterial activity, biosynthesis, structure-activity relationship, mechanism of action, and potential as antibiotics. Emerging trends in the field of antibacterial drug discovery from plants are also discussed. This Review brings to the forefront key findings on the antibacterial potential of plant NPs for consideration in future antibiotic discovery and development efforts.
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Affiliation(s)
- Gina Porras
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - François Chassagne
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - James T. Lyles
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - Lewis Marquez
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, 615 Michael St., Whitehead 115, Atlanta, Georgia 30322
| | - Micah Dettweiler
- Department of Dermatology, Emory University, 615 Michael St., Whitehead 105L, Atlanta, Georgia 30322
| | - Akram M. Salam
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, 615 Michael St., Whitehead 115, Atlanta, Georgia 30322
| | - Tharanga Samarakoon
- Emory University Herbarium, Emory University, 1462 Clifton Rd NE, Room 102, Atlanta, Georgia 30322
| | - Sarah Shabih
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - Darya Raschid Farrokhi
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
| | - Cassandra L. Quave
- Center for the Study of Human Health, Emory University, 1557 Dickey Dr., Atlanta, Georgia 30322
- Emory University Herbarium, Emory University, 1462 Clifton Rd NE, Room 102, Atlanta, Georgia 30322
- Department of Dermatology, Emory University, 615 Michael St., Whitehead 105L, Atlanta, Georgia 30322
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, 615 Michael St., Whitehead 115, Atlanta, Georgia 30322
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Repurposing of the Herbals as Immune-Boosters in the Prevention and Management of COVID-19: A Review. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2021. [DOI: 10.22207/jpam.15.1.35] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Coronavirus disease (COVID) is highly contagious, and negligence of it causes high morbidity and mortality globally. The highly infectious viral disease caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was abbreviated as COVID-19 (Coronavirus disease 2019) by World Health Organization first time on February 11, 2020, and later on, WHO declared COVID-19 as a global pandemic on 11/3/2020. Epidemiological studies demonstrated that the SARS CoV-2 infects the overall population, irrespective of age, gender, or ethnic variation, but it was observed in clinical studies that older and compromised immunity population is much more prone to COVID-19. SARS-CoV-2 majorly spread through aeration route in droplet form on sneezing and coughing, or by contact when touching eyes, nose or mouth with the infected hands or any other organs, resulting from mild to severe range of SARS-CoV-2 infection. This literature-based review was done by searching the relevant SCI and SCOPUS papers on the pandemic, SARS-CoV-2 and COVID-19, herbal formulation, and Ayurveda from the databases, Academia, Google Scholar, PubMed, and ResearchGate. The present review attempts to recognize the therapeutic strategies to combat COVID-19 because of the current human risk. Indian system of medicine, including herbals, has immense potential in treating and managing various viral infections and provides evidence to utilize Ayurvedic medication to improve immunity. Cumulative research findings suggest that Ayurvedic formulations and herbal immunomodulators (Tino sporacordifolia, Withania somnifera, Crocus sativus, Zafran, Allium sativum, Zingiber officinale, Albizia lebbek, Terminalia chebula, Piper longum, Mangifera indica, Ocimum sanctum, Centella asiatica ) are promising in the treatment of outrageous viral infections without exerting adverse effects. Considering the ancient wisdom of knowledge, the herbal formulations would compel healthcare policymakers to endorse Ayurveda formulations to control the COVID-19 pandemic significantly.
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Phytotoxic Activity and Growth Inhibitory Substances from Albizia richardiana (Voigt.) King & Prain. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11041455] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Albizia richardiana, a fast-growing, large deciduous tree belonging to the Fabaceae family, grows well in hot and humid areas but mainly grows in the tropics of the Old World. The medicinal and other uses of Albizia richardiana are well documented, but the phytotoxic effects of this tree have not yet been investigated. We conducted this study to investigate the phytotoxic activity of Albizia richardiana leaves and to identify growth inhibitory substances for controlling weeds in a sustainable way. Aqueous methanol extracts of Albizia richardiana leaves greatly suppressed the growth of cress and barnyard grass seedlings in a concentration- and species-dependent manner. Two phytotoxic substances were separated using several purification steps and characterized through spectral analysis as dehydrovomifoliol and loliolide. Dehydrovomifoliol and loliolide significantly arrested the seedling growth of cress in the concentrations of 0.1 and 0.01 mM, respectively. The extract concentrations needed for 50% growth inhibition (I50 values) of cress seedlings were 3.16–3.01 mM for dehydrovomifoliol and 0.03–0.02 mM for loliolide. The results suggest that these two allelopathic substances might play a vital role in the phytotoxicity of Albizia richardiana leaves.
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Jiang W, Luo J, Wang Y, Chen X, Jiang X, Feng Z, Zhang L. The pH-Responsive Property of Antimicrobial Peptide GH12 Enhances Its Anticaries Effects at Acidic pH. Caries Res 2020; 55:21-31. [PMID: 33341803 DOI: 10.1159/000508458] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/01/2020] [Indexed: 02/05/2023] Open
Abstract
Dental caries is closely related to the acidification of the biofilms on the tooth surface, in which cariogenic bacteria bring about a dramatic pH decrease and disrupt remineralisation equilibrium upon the fermentation of dietary sugars. Thus, approaches targeting the acidified niches with enhanced anticaries activities at acidic pH are highly desirable. In our previous study, a cationic amphipathic α-helical antimicrobial peptide GH12 (Gly-Leu-Leu-Trp-His-Leu-Leu-His-His-Leu-Leu-His-NH2) was designed with good stability, low cytotoxicity, and excellent antibacterial effects. Considering its potent antibacterial activity against the acidogenic bacteria and its histidine-rich sequence, it was speculated that GH12 might show enhanced antimicrobial effects at an acidic pH. In this study, the pH-responsive property of GH12 was determined to evaluate its potential as a smart acid-activated anticaries agent. GH12 possessed much lower minimal inhibitory concentrations and minimal bactericidal concentrations against various kinds of bacteria at pH 5.5 than at pH 7.2. Employing Streptococcus mutans, the principal caries pathogen, as the model system, it was found that GH12 showed much stronger bactericidal effects on both planktonic S. mutans and S. mutans embedded in the biofilm at pH 5.5. In addition, short-term treatment with GH12 showed much more effective inhibitory effects on water-insoluble exopolysaccharides synthesis and lactic acid production of the preformed S. mutans biofilm at pH 5.5. As for the mechanism exploration, it was found that the net positive charge of GH12 increased and the tryptophan fluorescence intensity heightened with the peak shifting towards the short wavelength at pH 5.5, which demonstrated that GH12 could be more easily attracted to the anionic microbial cell membranes and that GH12 showed stronger interactions with the lipid membranes. In conclusion, acidic pH enhanced the antibacterial and antibiofilm activities of GH12, and GH12 is a potential smart anticaries agent targeting the cariogenic acidic microenvironment.
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Affiliation(s)
- Wentao Jiang
- State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Junyuan Luo
- State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yufei Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xiangshu Chen
- State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, China
| | - Xuelian Jiang
- State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zening Feng
- State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Linglin Zhang
- State Key Laboratory of Oral Diseases and National Clinical Research Centre for Oral Diseases, Sichuan University, Chengdu, China, .,Department of Cariology and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China,
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Wei H, Xie Z, Tan X, Guo R, Song Y, Xie X, Wang R, Li L, Wang M, Zhang Y. Temporin-Like Peptides Show Antimicrobial and Anti-Biofilm Activities against Streptococcus mutans with Reduced Hemolysis. Molecules 2020; 25:molecules25235724. [PMID: 33291521 PMCID: PMC7730238 DOI: 10.3390/molecules25235724] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 12/29/2022] Open
Abstract
In our previous study, temporin-GHaR (GHaR) showed potent antimicrobial activity with strong hemolytic toxicity. To overcome its weakness, we designed GHaR6R, GHaR7R, GHaR8R, GHaR9R, and GHaR9W by changing the number of positive charges and the hydrophobic surface of GHaR. With the exception of GHaR7R, the hemolytic toxicity of the derived peptides had been reduced, and the antimicrobial activities remained close to the parent peptide (except for GHaR9R). GHaR6R, GHaR7R, GHaR8R, and GHaR9W exhibited a great bactericidal effect on Streptococcus mutans (S. mutans), which is one of the main pathogens causing dental caries. According to the membrane permeation and scanning electron microscope (SEM) analysis, these derived peptides targeted to the cell membranes of planktonic bacteria, contributing to the disruption of the membrane integrity and leakage of the intracellular contents. Moreover, they inhibited the formation of biofilms and eradicated the mature biofilms of S. mutans. Compared with GHaR7R, the derived peptides showed less cytotoxicity to human oral epithelial cells (HOECs). The derived peptides are expected to be the molecular templates for designing antibacterial agents to prevent dental caries.
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Affiliation(s)
- Hanqi Wei
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Zhipeng Xie
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Xiuchuan Tan
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Ran Guo
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Yanting Song
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Xi Xie
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Rong Wang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Lushuang Li
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
| | - Manchuriga Wang
- College of Animal Science and Technology, Hainan University, Haikou 570228, China
- Correspondence: (M.W.); (Y.Z.)
| | - Yingxia Zhang
- Key Laboratory of Tropical Biological Resources of Ministry of Education, School of Life and Pharmaceutical Sciences, Hainan University, Haikou 570228, China; (H.W.); (Z.X.); (X.T.); (R.G.); (Y.S.); (X.X.); (R.W.); (L.L.)
- Correspondence: (M.W.); (Y.Z.)
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Islam MN, Tasnim H, Arshad L, Haque MA, Tareq SM, Kamal ATMM, Rahman MM, Reza ASMA, Chowdhury KAA, Tareq AM. Stem extract of Albizia richardiana exhibits potent antioxidant, cytotoxic, antimicrobial, anti-inflammatory and thrombolytic effects through in vitro approach. CLINICAL PHYTOSCIENCE 2020. [DOI: 10.1186/s40816-020-00212-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
Albizia richardiana belongs Fabaceae family which different parts like fruits, flowers, barks, and roots are used medicinally. The study reports the in vitro anti-inflammatory, thrombolytic, cytotoxicity and antimicrobial activity of methanolic extract of A. richardiana stem and its different fractions.
Method
The methanolic extract of A. richardiana stem (MEAR) extracted with n-hexane (HXFAR), carbon tetrachloride (CTFAR), chloroform (CFAR), and aqueous (AQFAR) and subjected for DPPH scavenging activity and total phenol content (TPC). The cytotoxic activity evaluated by brine shrimp lethality bioassay, while the disk diffusion method used for the antimicrobial study. The anti-inflammatory and thrombolytic activities of the extracts evaluated by the hypotonic solution induced hemolysis, heat-induced hemolysis and human blood clot lysis, respectively.
Results
All the extracts exhibited excellent antioxidant activity in the DPPH scavenging assay and maximum total phenol content observed by HXFAR. Secondly, the extract showed a moderate LC50 value in brine shrimp lethality bioassay, where the CTFAR extract exhibited potential antimicrobial activities against sixteen different microorganisms. In anti-inflammatory, all the extract exhibited a significant (P < 0.0001) protection against lysis of human erythrocyte membrane induced by heat and hypotonic solution, as compared to the standard acetyl salicylic acid. An extremely significant (P < 0.0001) clot lysis was found in MEAR (16.66%) while the standard drug streptokinase (70.94%).
Conclusion
All the fractions revealed the significant free radical scavenging activity. Moreover, CTFAR showed wide spectrum of antimicrobial activity. Thus, the results of the present study provided scientific evidence for the use of Albizia richardiana as traditional medicine.
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He Y, Wang Q, Ye Y, Liu Z, Sun H. The ethnopharmacology, phytochemistry, pharmacology and toxicology of genus Albizia: A review. JOURNAL OF ETHNOPHARMACOLOGY 2020; 257:112677. [PMID: 32278761 DOI: 10.1016/j.jep.2020.112677] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 02/10/2020] [Accepted: 02/13/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The genus Albizia (Leguminosae) comprises about 150 species and some species have been used for the treatment of rheumatism, stomachache, cough, diarrhea, and wounds in traditional and local medicine. The aim of the review: This review article documents and critically assesses the current status of the traditional uses, phytochemistry, pharmacology, and toxicology of the Albizia species. MATERIALS AND METHODS All provided literatures on the Albizia species were searched using the electronic databases (e.g. Web of Science, Elsevier, Springer, PubMed, ACS, CNKI, Google Scholar, and Baidu Scholar), books, and theses with keywords of 'Albizia' and 'Albizzia'. RESULTS Albizia species have been used for melancholia, insomnia, wounds, fever, abscesses, diabetes, headache, stomachache, diarrhea, cough, rheumatism, snake bite, malaria, and parasitic infection in traditional and local medicine. These plants mainly contain triterpenoid saponins, flavonoids, lignanoids, alkaloids, phenolic glycosides, etc. Albizia species have been demonstrated to possess various pharmacological activities. Among them, the antidiabetic, anti-inflammatory, antifertility, antianxiety, antidepressant, and anti-fever properties are consistent with the traditional and local applications of the Albizia species. CONCLUSIONS The traditional and local uses of Albizia species have been partially demonstrated by the pharmacological investigation. However, some traditional applications have not been assessed scientifically due to incomplete methodologies and ambiguous findings. Moreover, no clinical evidences support the health benefits of these plants. The systematic and comprehensive preclinical studies and clinical trials are still required to verify the pharmacological activities, clinical efficacy, and safety of Albizia species.
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Affiliation(s)
- Yanfei He
- Laboratory of Natural Drug, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Qiaowen Wang
- Laboratory of Natural Drug, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China
| | - Yiping Ye
- Institute of Materia Medica, Zhejiang Academy of Medical Sciences, Hangzhou, 310013, China
| | - Zhaoying Liu
- Laboratory of Natural Drug, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China; Hunan Engineering Research Center of Veterinary Drug, College of Veterinary Medicine, Hunan Agricultural University, Changsha, Hunan, 410128, China
| | - Hongxiang Sun
- Laboratory of Natural Drug, College of Animal Sciences, Zhejiang University, Hangzhou, Zhejiang, 310058, China.
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Optimized microwave-assisted extraction of bioflavonoids from Albizia myriophylla bark using response surface methodology. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2020; 57:2107-2117. [PMID: 32431337 DOI: 10.1007/s13197-020-04246-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 12/22/2019] [Accepted: 01/03/2020] [Indexed: 10/25/2022]
Abstract
Bioflavonoids are of great interest due to their health-benefitting properties and possible protection against certain types of diseases. A microwave-assisted extraction (MAE) method was investigated for maximum retention of total bioflavonoids from Albizia myriophylla bark (AMB). Response surface methodology (RSM) using central composite design were employed for obtaining the best possible combination of MAE process parameters including microwave power (400-900 W), liquid/solid ratio (20-40 ml/g), extraction time (20-40 min) and ethanol concentration (60-100%). Optimum conditions of extraction under which predicted maximum bioflavonoids yield of 152.74 mg QE/g DW and antioxidant activity of 75.33% in close proximity with the experimental values were: microwave power 728 W, liquid/solid ratio 24.70 ml/g, extraction time 39.86 min and ethanol concentration 70.36%. Satisfactory statistical parameters (R2), ANOVA for the model and lack-of-fit testing provided an adequate mathematical description of the MAE of bioflavonoids with high antioxidant activity. Therefore, MAE of AMB using RSM could be termed as a time-saving and an efficient method resulting to high yield with increased antioxidant activity. Also, HPLC analysis of AMB revealed the presence of bioflavonoids viz., naringin, quercetin and apigenin; which may be further extensively studied for use as therapeutics against various health issues.
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Li Y, Wang Y, Chen X, Jiang W, Jiang X, Zeng Y, Li X, Feng Z, Luo J, Zhang L. Antimicrobial peptide GH12 as root canal irrigant inhibits biofilm and virulence of Enterococcus faecalis. Int Endod J 2020; 53:948-961. [PMID: 32189340 DOI: 10.1111/iej.13296] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 03/15/2020] [Accepted: 03/16/2020] [Indexed: 02/05/2023]
Abstract
AIM The objectives of this laboratory-based study were to investigate the effects of GH12 on Enterococcus faecalis biofilm and virulence. METHODOLOGY Minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of GH12 against E. faecalis were first determined. A time-kill assay was further conducted. The effects of GH12 on the expression of virulence and stress genes in E. faecalis were evaluated by RT-qPCR. Crystal violet stain was used to investigate the effects of GH12 on E. faecalis biofilm formation and 1-day-old biofilm. Finally, an ex vivo tooth model contaminated with E. faecalis was used to evaluate the antimicrobial activity of GH12 as an irrigant by CFU counting, SEM and CLSM. One-way anova and Tukey's multiple comparisons test were used to compare the differences amongst groups (α = 0.05). RESULTS The MICs and MBCs of GH12 against E. faecalis were 8.0 ± 0.0 and 16.0 ± 0.0 mg L-1 , respectively, and GH12 at 32.0 mg L-1 reduced the bacterial numbers by more than 99.9% within 1 min. Various virulence genes (efaA, esp and gelE) and stress genes (dnaK, groEL, ctsR and clpPBCEX) in E. faecalis were significantly downregulated by GH12 at sub-MIC levels (P < 0.05). Additionally, both E. faecalis biofilm formation and the biomass of 1-day-old E. faecalis biofilm were significantly reduced by GH12 (P < 0.05). Elimination of E. faecalis in biofilms from root canal walls was achieved through irrigation with 64.0 mg L-1 GH12 for 30 min. CLSM analysis revealed that GH12 at 64.0 mg L-1 was most effective in eliminating bacteria within dentinal tubules (P < 0.05). CONCLUSION In a laboratory setting, and when used as an irrigant, GH12 suppressed E. faecalis, downregulated specific virulence and stress-associated genes, eliminated intracanal E. faecalis protected by biofilms and killed bacteria in dentinal tubules. These results emphasize the need for preclinical and clinical studies to explore the potential of GH12 as an antimicrobial agent during root canal treatment.
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Affiliation(s)
- Y Li
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
| | - W Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Y Zeng
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - X Li
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Z Feng
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - J Luo
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - L Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China.,Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Pulbutr P, Thongrak K, Thitprapai A, Rattanakiat S, Mudjupa C, Jaruchotikamol A. Inhibitory activity of lupinifolin isolated from Derris reticulata stem against biofilm formation of Streptococcus mutans and Staphylococcus aureus. Pharmacognosy Res 2020. [DOI: 10.4103/pr.pr_57_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Sianglum W, Muangngam K, Joycharat N, Voravuthikunchai SP. Mechanism of Action and Biofilm Inhibitory Activity of Lupinifolin Against Multidrug-Resistant Enterococcal Clinical Isolates. Microb Drug Resist 2019; 25:1391-1400. [DOI: 10.1089/mdr.2018.0391] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Wipawadee Sianglum
- Department of Microbiology, Faculty of Science, Prince of Songkhla University, Hat Yai, Thailand
- Excellence Research Laboratory on Natural Products, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
| | - Kanitta Muangngam
- Department of Microbiology, Faculty of Science, Prince of Songkhla University, Hat Yai, Thailand
- Excellence Research Laboratory on Natural Products, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
| | - Nantiya Joycharat
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat Yai, Thailand
| | - Supayang Piyawan Voravuthikunchai
- Department of Microbiology, Faculty of Science, Prince of Songkhla University, Hat Yai, Thailand
- Excellence Research Laboratory on Natural Products, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
- Natural Product Research Center of Excellence, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand
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Issarachot P, Sangkaew W, Sianglum W, Saeloh D, Limsuwan S, Voravuthikunchai SP, Joycharat N. α-Glucosidase inhibitory, antibacterial, and antioxidant activities of natural substances from the wood of Derris reticulata Craib. Nat Prod Res 2019; 35:2858-2865. [PMID: 31621406 DOI: 10.1080/14786419.2019.1678610] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Derris reticulata (Leguminosae-Papilionoideae) has been used for the treatment of diabetes in Thai folk remedies. The phytochemical investigation of the wood of D. reticulata revealed the isolation of two new pyranoflavanones, 4'-methoxydereticulatin (1) and 2'''-hydroxy,3'''-ethoxylupinifolin (2), along with five known compounds namely lupinifolin (3), 2''',3'''-dihydroxylupinifolin (4), genistein (5), lupeol (6), and β-sitosterol (7). Compounds 1-4 were selected for antibacterial assay using broth microdilution method, and displayed good activity against four out of five tested pathogenic bacterial strains, with MIC values ranging from 0.78 to 128 μg/mL. The result from spectrophotometric assay of α-glucosidase inhibition showed that 5 exhibited promising α-glucosidase inhibitory activity, compared with the positive control acarbose. Additionally, it was found that compounds 4 and 5 showed moderate DPPH and NO radicals scavenging activity. Modeling studies were also performed to suggest the interaction modes of compounds 3-5 in the α-glucosidase enzyme active site.
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Affiliation(s)
- Papawarin Issarachot
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Warissara Sangkaew
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Wipawadee Sianglum
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - Dennapa Saeloh
- Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Songkhla, Thailand.,Faculty of Medical Technology, Prince of Songkla University, Songkhla, Thailand
| | - Surasak Limsuwan
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, Thailand.,Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Songkhla, Thailand
| | - Supayang Piyawan Voravuthikunchai
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla, Thailand.,Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Songkhla, Thailand
| | - Nantiya Joycharat
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, Thailand.,Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Songkhla, Thailand
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Abstract
Floor antibacterial technology prevents the human body from cross-infection with bacterial diseases. The most commonly used approach to endow daily-used floors with antibacterial properties is to apply a thin film of antibacterial agents on the parquet floor surface. In the present study, five commercial antibacterial nanoparticles were first dispersed in melamine resin solution, and then applied on a floor. Afterwards, the antibacterial properties of the nanoparticle-coated floor were investigated, in which Escherichia coli was used as the target bacteria. The impact of the nanoparticle dispersing agents on the ultimate antibacterial properties of the floor were also investigated. The results showed that silver nanoparticle-loaded hydroxyl zirconium sodium phosphate (Ag-HZDP) was most suitable as the antibacterial agent of a melamine coating for parquet flooring. With the help of sodium hexametaphosphate, the antibacterial agent was able to disperse well in the melamine resin solution and was also able to disperse well on the floor surface. When the loading amount of Ag-HZDP was 1 wt % or higher, the prepared antibacterial floor was able kill almost all the bacteria cultivated on its surface. Moreover, the prepared antibacterial floor had a lower toxicity compared with a pristine cedar substrate. The present study provides an effective way to provide daily-used parquet floors with excellent antibacterial properties.
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Effects of Antimicrobial Peptide GH12 on the Cariogenic Properties and Composition of a Cariogenic Multispecies Biofilm. Appl Environ Microbiol 2018; 84:AEM.01423-18. [PMID: 30341079 DOI: 10.1128/aem.01423-18] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 10/08/2018] [Indexed: 02/05/2023] Open
Abstract
Dental caries is a biofilm-mediated disease that occurs when acidogenic/aciduric bacteria obtain an ecological advantage over commensal species. In previous studies, the effects of the antimicrobial peptide GH12 on planktonic bacteria and monospecies biofilms were confirmed. The objectives of this study were to investigate the effects of GH12 on a cariogenic multispecies biofilm and to preliminarily explain the mechanism. In this biofilm model, Streptococcus mutans ATCC 70061 was the representative of cariogenic bacteria, while Streptococcus gordonii ATCC 35105 and Streptococcus sanguinis JCM 5708 were selected as healthy microbiota. The results showed that GH12 was more effective in suppressing S. mutans than the other two species, with lower MIC and minimal bactericidal concentration (MBC) values among diverse type strains and clinical isolated strains. Therefore, GH12, at no more than 8 mg/liter, was used to selectively suppress S. mutans in the multispecies biofilm. GH12 at 4 mg/liter and 8 mg/liter reduced the cariogenic properties of the multispecies biofilm in biofilm formation, glucan synthesis, and lactic acid production. In addition, GH12 suppressed S. mutans within the multispecies biofilm and changed the bacterial composition. Furthermore, 8 mg/liter GH12 showed a selective bactericidal impact on S. mutans, and GH12 promoted hydrogen peroxide production in S. sanguinis and S. gordonii, which improved their ecological advantages. In conclusion, GH12 inhibited the cariogenic properties and changed the composition of the multispecies biofilm through a two-part mechanism by which GH12 directly suppressed the growth of S. mutans as well as enhanced the ecological competitiveness of S. sanguinis and S. gordonii IMPORTANCE Dental caries is one of the most prevalent chronic infectious diseases worldwide, with substantial economic and quality-of-life impacts. Streptococcus mutans has been considered the principal pathogen of dental caries. To combat dental caries, an antimicrobial peptide, GH12, was designed, and its antibacterial effects on planktonic S. mutans and the monospecies biofilm were confirmed. As etiological concepts of dental caries evolved to include microecosystems, the homeostasis between pathogenic and commensal bacteria and a selective action on cariogenic virulence have increasingly become the focus. The novelty of this research was to study the effects of the antimicrobial peptides on a controlled cariogenic multispecies biofilm model. Notably, the role of an antimicrobial agent in regulating interspecific competition and composition shifts within this multispecies biofilm was investigated. With promising antibacterial and antibiofilm properties, the use of GH12 might be of importance in preventing and controlling caries and other dental infections.
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Wang X, Wang Y, Wang K, Ren Q, Li H, Zheng S, Niu Y, Zhou X, Li W, Zhang L. Bifunctional anticaries peptides with antibacterial and remineralizing effects. Oral Dis 2018; 25:488-496. [PMID: 30291730 DOI: 10.1111/odi.12990] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 09/17/2018] [Accepted: 09/28/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Xiuqing Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
- Department of Endodontics and Operative Dentistry, School and Hospital of Stomatology; Fujian Medical University; Fuzhou China
| | - Yufei Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Kun Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Qian Ren
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Haoran Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Sainan Zheng
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Yumei Niu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Xuedong Zhou
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Wei Li
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
| | - Linglin Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & Department of Cariology and Endodontics; West China Hospital of Stomatology, Sichuan University; Chengdu China
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Bakasatae N, Kunworarath N, Takahashi Yupanqui C, Voravuthikunchai SP, Joycharat N. Bioactive components, antioxidant, and anti-inflammatory activities of the wood of Albizia myriophylla. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2018. [DOI: 10.1016/j.bjp.2018.05.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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Pulbutr P, Rattanakiat S, Phetsaardeiam N, Modtaku P, Denchai R, Jaruchotikamol A, Khunawattanakul W. Anticariogenic Activities of <I>Derris reticulata </I>Ethanolic Stem Extract Against <I>Streptococcus mutans</I>. Pak J Biol Sci 2018; 21:300-306. [PMID: 30311481 DOI: 10.3923/pjbs.2018.300.306] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND AND OBJECTIVE Streptococcus mutans is a dominant causative pathogen of dental caries, which is a major oral health problem affecting million people worldwide. Derris reticulata is a medicinal plant possessing antimicrobial activity against several Gram-positive pathogenic bacteria. None the less, its effects on growth and cariogenic properties of S. mutans has not been clearly established. This study aimed to investigate the antibacterial and anti cariogenic activities of the D. reticulata ethanolic stem extract. MATERIALS AND METHODS The TLC analysis was performed to authenticate the D. reticulata sample. Minimum inhibition concentration and minimum bactericidal concentration were determined by using broth dilution and drop plate methods, respectively. Sucrose dependent and sucrose independent-adherences, biofilm formation and glycolytic pH drop assays were performed to evaluate the anticariogenic activity. RESULTS The ethanolic stem extract of D. reticulata possessed the antibacterial activity against S. mutans with the MIC and MBC of 0.875±0.250 and 1.750±0.500 mg mL-1, respectively. The extract at the lower concentrations of sub-MIC also had significant inhibitory actions against the cariogenic properties of S. mutans, including surface adherence, biofilm formation and glycolytic acid production. CONCLUSION The D. reticulata stem extract had a substantial anticariogenic activities and thus potentially be developed as an oral health care product for dental caries prevention in the near future.
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Limsuwan S, Moosigapong K, Jarukitsakul S, Joycharat N, Chusri S, Jaisamut P, Voravuthikunchai SP. Lupinifolin from Albizia myriophylla wood: A study on its antibacterial mechanisms against cariogenic Streptococcus mutans. Arch Oral Biol 2017; 93:195-202. [PMID: 29102025 DOI: 10.1016/j.archoralbio.2017.10.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Revised: 10/16/2017] [Accepted: 10/16/2017] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To determine the anti-Streptococcus mutans mechanisms of action of lupinifolin from Albizia myriophylla Benth. (Fabaceae) wood and provide scientific evidence to support the traditional use of the plant against dental caries. METHODS The minimum inhibitory concentration (MIC) was evaluated using the broth micro-dilution method. The effects of lupinifolin on bactericidal activity, bacterial cell walls, and membranes were investigated by time-kill, lysis, and leakage assays, respectively. Electron microscopy was utilized to observe any cell morphological changes caused by the compound. Localization of lupinifolin in S. mutans was detected using the thin layer chromatography technique. RESULTS The MIC range of lupinifolin against S. mutans (n=6) was 2-4 μg/ml. This compound displayed bactericidal effects on S. mutans ATCC 25175 by 90-99.9% killing at 4MIC-16MIC after 8-24 hours. Lupinifolin-treated cells demonstrated no lysis. However, significant cytoplasmic leakage through the bacterial membrane was observed after treatment with lupinifolin at 4MIC-16MIC. As revealed by ultrastructural analysis, lupinifolin produced some changes in bacterial cell walls and membranes. Moreover, the compound was observed in the cytoplasmic fraction of the lupinifolin-treated cells. These results suggest that lupinifolin can enter the cell of bacteria but does not accumulate in the cell envelope and subsequently disrupts the integrity of the cytoplasmic membrane, leading to cell death. CONCLUSION The scientific evidence from this study offers valuable insights into the potential role of lupinifolin in pharmaceutical and antibiotic applications and supports the therapeutic effects of A. myriophylla, which has traditionally been used as an alternative treatment for dental caries.
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Affiliation(s)
- Surasak Limsuwan
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand.
| | - Kotchakorn Moosigapong
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Siriporn Jarukitsakul
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Nantiya Joycharat
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Sasitorn Chusri
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Patcharawalai Jaisamut
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
| | - Supayang Piyawan Voravuthikunchai
- Excellence Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand; Department of Microbiology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90110, Thailand
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Hussain F, Rana Z, Shafique H, Malik A, Hussain Z. Phytopharmacological potential of different species of Morus alba and their bioactive phytochemicals: A review. Asian Pac J Trop Biomed 2017. [DOI: 10.1016/j.apjtb.2017.09.015] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Wang Y, Fan Y, Zhou Z, Tu H, Ren Q, Wang X, Ding L, Zhou X, Zhang L. De novo synthetic short antimicrobial peptides against cariogenic bacteria. Arch Oral Biol 2017; 80:41-50. [DOI: 10.1016/j.archoralbio.2017.03.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 02/17/2017] [Accepted: 03/23/2017] [Indexed: 01/10/2023]
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Joycharat N, Issarachote P, Sontimuang C, Voravuthikunchai SP. Alpha-glucosidase inhibitory activity of ethanol extract, fractions and purified compounds from the wood of Albizia myriophylla. Nat Prod Res 2017; 32:1291-1294. [DOI: 10.1080/14786419.2017.1333990] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Nantiya Joycharat
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, Thailand
- Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Songkhla, Thailand
| | - Papawarin Issarachote
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Chonlatid Sontimuang
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, Thailand
| | - Supayang Piyawan Voravuthikunchai
- Excellent Research Laboratory on Natural Products, Faculty of Science and Natural Product Research Center of Excellence, Prince of Songkla University, Songkhla, Thailand
- Faculty of Science, Department of Microbiology, Prince of Songkla University, Songkhla, Thailand
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Yusook K, Weeranantanapan O, Hua Y, Kumkrai P, Chudapongse N. Lupinifolin from Derris reticulata possesses bactericidal activity on Staphylococcus aureus by disrupting bacterial cell membrane. J Nat Med 2016; 71:357-366. [PMID: 28039567 DOI: 10.1007/s11418-016-1065-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 12/08/2016] [Indexed: 10/20/2022]
Abstract
In this study, lupinifolin, a prenylated flavonoid, was isolated from Derris reticulata stem, identified by NMR spectra and confirmed with mass spectrometry. Lupinifolin was freshly prepared by solubilizing in 0.1 N NaOH and immediately diluted in Müller-Hinton broth for antibacterial testing. The data showed that Gram-positive bacteria were more susceptible to lupinifolin than Gram-negative bacteria. Of four strains of Gram-positive bacteria tested, Staphylococcus aureus was the most susceptible. Using the two-fold microdilution method, it was found that lupinifolin possessed antimicrobial activity against S. aureus with minimum inhibitory concentration and minimum bactericidal concentration of 8 and 16 µg/ml, respectively, which is less potent than ampicillin. However, from the time-effect relationship, it was shown that lupinifolin had faster onset than ampicillin. The faster onset of lupinifolin was confirmed by scanning electron microscopy. To investigate the mechanism of action of lupinifolin, transmission electron microscopy (TEM) was performed to observe the ultrastructure of S. aureus. The TEM images showed that lupinifolin ruptured the bacterial cell membrane and cell wall. Due to its fast onset, it is suggested that the action of lupinifolin is likely to be the direct disruption of the cell membrane. This hypothesis was substantiated by the data from flow cytometry using DiOC2 as an indicator. The result showed that the red/green ratio which indicated bacterial membrane integrity was significantly decreased, similar to the known protonophore carbonyl cyanide 3-chlorophenylhydrazone. It is concluded that lupinifolin inhibits the growth of S. aureus by damaging the bacterial cytoplasmic membrane.
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Affiliation(s)
- Kamol Yusook
- School of Preclinical Sciences, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Oratai Weeranantanapan
- School of Preclinical Sciences, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Yanling Hua
- The Center for Scientific and Technological Equipment, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand
| | - Pakarang Kumkrai
- Division of Health Promotion, Faculty of Health Science, Srinakharinwirot University, Ongkharak, Nakhon-Nayok, 26120, Thailand
| | - Nuannoi Chudapongse
- School of Preclinical Sciences, Institute of Science, Suranaree University of Technology, Nakhon Ratchasima, 30000, Thailand.
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Jiang X, Yang W, Zhou C, Lu K, Lin C. Separation and Purification of Polyphenols from Pericarpium Granati Using Macroporous Resins and Evaluation of its Anti-Streptococcus mutans Activity in vitro. ACTA ACUST UNITED AC 2016. [DOI: 10.3923/biotech.2016.86.95] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Tu H, Fan Y, Lv X, Han S, Zhou X, Zhang L. Activity of Synthetic Antimicrobial Peptide GH12 against Oral Streptococci. Caries Res 2016; 50:48-61. [PMID: 26859135 DOI: 10.1159/000442898] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2015] [Accepted: 11/26/2015] [Indexed: 02/05/2023] Open
Abstract
Controlling the growth of cariogenic microorganisms such as oral streptococci is an adjunct therapy for caries-active individuals to prevent and treat caries. Here we investigated the antimicrobial activity of the synthetic amphipathic α- helical antimicrobial peptide GH12 (GLLWHLLHHLLH-NH2) against oral streptococci in vitro. Circular dichroism studies showed that GH12 takes on an α-helical conformation in the presence of membrane-mimicking solvents, and reversed-phase high-performance liquid chromatography studies showed that GH12 remains stable in saliva. The peptide showed bactericidal activity against oral streptococci, with minimum inhibitory concentrations ranging from 6.7 to 32.0 μg/ml. GH12 concentrations 4-fold higher than the minimum bactericidal concentration completely killed oral streptococci within 20 min. Treating oral streptococci with GH12 caused noticeable changes in bacterial viability and morphology based on confocal laser scanning microscopy and scanning electron microscopy. Effects of GH12 on biofilm formation and on viability of mature biofilm were quantified by crystal violet staining and the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. GH12 effectively inhibited biofilm formation and metabolic activity in biofilms of oral streptococci, especially S. mutans, S. sobrinus and S. salivarius. These results suggest that GH12 shows rapid and strong antimicrobial activity against oral streptococci in vitro, opening the door to preclinical and clinical studies to explore its potential for caries prevention and treatment.
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Affiliation(s)
- Huanxin Tu
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, People's Republic of China
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Soural M, Hodon J, Dickinson NJ, Sidova V, Gurska S, Dzubak P, Hajduch M, Sarek J, Urban M. Preparation of Conjugates of Cytotoxic Lupane Triterpenes with Biotin. Bioconjug Chem 2015; 26:2563-70. [DOI: 10.1021/acs.bioconjchem.5b00567] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Miroslav Soural
- Department
of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779
00 Olomouc, Czech Republic
| | - Jiri Hodon
- Department
of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779
00 Olomouc, Czech Republic
| | - Niall J. Dickinson
- Department
of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Veronika Sidova
- Department
of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
| | - Sona Gurska
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779
00 Olomouc, Czech Republic
| | - Petr Dzubak
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779
00 Olomouc, Czech Republic
| | - Marian Hajduch
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779
00 Olomouc, Czech Republic
| | - Jan Sarek
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779
00 Olomouc, Czech Republic
| | - Milan Urban
- Department
of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46 Olomouc, Czech Republic
- Institute
of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779
00 Olomouc, Czech Republic
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Maneenoon K, Khuniad C, Teanuan Y, Saedan N, Prom-In S, Rukleng N, Kongpool W, Pinsook P, Wongwiwat W. Ethnomedicinal plants used by traditional healers in Phatthalung Province, Peninsular Thailand. JOURNAL OF ETHNOBIOLOGY AND ETHNOMEDICINE 2015; 11:43. [PMID: 26025447 PMCID: PMC4469324 DOI: 10.1186/s13002-015-0031-5] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Accepted: 05/06/2015] [Indexed: 05/21/2023]
Abstract
BACKGROUND In rural communities of Thailand, traditional healers still play an important role in local health care systems even though modern medicine is easily accessible. Meanwhile, natural forests in Thailand which are important sources of materia medica are being greatly destroyed. This has led to an erosion of traditional Thai medicine. Furthermore, the concept of medicinal plant selection as medicine based on their tastes is still an important component of traditional Thai medicine, but no or little publications have been reported. Thus the aim of the present study is to collect ethnomedicinal data, medicinal plant tastes and relevant information from experienced traditional healers before they are lost. METHODS An ethnobotanical survey was carried out to collect information from nine experienced traditional healers on the utilization of medicinal plants in Phatthalung Province, Peninsular Thailand. Data were obtained using semi-structured interviews and participant observations. Plant specimens were also collected and identified according to the plant taxonomic method. RESULTS A total of 151 medicinal plants were documented and 98 of these are reported in the study. Local names, medicinal uses, parts used, modes of preparation, and the relationship between ailments and tastes of medicinal plant species are presented. CONCLUSIONS This research suggests that traditional healers are still considered important for public health among Thai communities and that many people trust the healing properties of medicinal plants. In the future, it is hoped that traditional Thai medicine will be promoted and therefore will help reduce national public health expense.
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Affiliation(s)
- Katesarin Maneenoon
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
| | - Chuanchom Khuniad
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
- Faculty of Health and Sports Science, Thaksin University, Phatthalung, 93110, Thailand.
| | - Yaowalak Teanuan
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
- Faculty of Science and Technology, Songkhla Rajabhat University, Songkhla, 90000, Thailand.
| | - Nisachon Saedan
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
| | - Supatra Prom-In
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
| | - Nitiphol Rukleng
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
| | - Watid Kongpool
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
| | - Phongsura Pinsook
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
| | - Winyu Wongwiwat
- Faculty of Traditional Thai Medicine, Prince of Songkla University, Songkhla, 90110, Thailand.
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Joycharat N, Boonma C, Thammavong S, Yingyongnarongkul BE, Limsuwan S, Voravuthikunchai SP. Chemical constituents and biological activities of Albizia myriophylla wood. PHARMACEUTICAL BIOLOGY 2015; 54:62-73. [PMID: 25894212 DOI: 10.3109/13880209.2015.1014920] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
CONTEXT Albizia myriophylla Benth (Leguminosae) is a medicinal plant widely used in Thailand and other Asian countries as a folk medicine remedy for many ailments. OBJECTIVE The objective of this study is to investigate the chemical compositions, antibacterial activity, and cytotoxicity of A. myriophylla wood. MATERIALS AND METHODS The structure identification of the isolated compounds was established using spectroscopic methods. In vitro antibacterial activity against Streptococcus mutans, Staphylococcus aureus, and Bacillus cereus and the cytotoxicity against KB cells of extracts and compounds from A. myriophylla were performed using broth microdilution and resazurin microplate assays, respectively. The lupinifolin content in A. myriophylla extracts was quantified by high-performance liquid chromatography. RESULTS A rare flavan-3,4-diol (1) together with eight known compounds (2-9) were isolated from the wood of A. myriophylla. Compounds 4-9 exhibited anti-S. mutans activity, of which lupinifolin (5) was the most potent with an MIC value of 0.98 µg/mL, followed by its dihydroxy derivative 4 with an MIC value of 62.5 µg/mL. Compounds 4 and 5 also displayed marked antibacterial activity against B. cereus and S. aureus (MIC value 15.63-125 µg/mL) and showed strong cytotoxic activity against KB cells (IC50 value 4.95-12.55 µg/mL). The lupinifolin contents in ethanol extracts from two different collections of this plant originating from central and southern Thailand were 93.85 and 0.04 mg/g, respectively. CONCLUSION This is the first report of compounds 1-4 from A. myriophylla. Compounds 4 and 5 showed potent antibacterial and cytotoxic activities compared with other isolates. The anti-S. mutans activity of A. myriophylla extracts seems to be related to the lupinifolin content.
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Affiliation(s)
- Nantiya Joycharat
- a Faculty of Traditional Thai Medicine, Prince of Songkla University , Songkhla , Thailand
- b Natural Products Research Center of Excellence, Faculty of Science, Prince of Songkla University , Songkhla , Thailand
| | - Chancheera Boonma
- a Faculty of Traditional Thai Medicine, Prince of Songkla University , Songkhla , Thailand
| | - Sonesay Thammavong
- c Faculty of Pharmacy, University of Health Sciences , Vientiane , Lao PDR
| | | | - Surasak Limsuwan
- a Faculty of Traditional Thai Medicine, Prince of Songkla University , Songkhla , Thailand
- b Natural Products Research Center of Excellence, Faculty of Science, Prince of Songkla University , Songkhla , Thailand
| | - Supayang Piyawan Voravuthikunchai
- b Natural Products Research Center of Excellence, Faculty of Science, Prince of Songkla University , Songkhla , Thailand
- e Department of Microbiology , Faculty of Science, Prince of Songkla University , Songkhla , Thailand
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