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Bernardoni BL, D'Agostino I, La Motta C, Angeli A. An insight into the last 5-year patents on Porphyromonas gingivalis and Streptococcus mutans, the pivotal pathogens in the oral cavity. Expert Opin Ther Pat 2024; 34:433-463. [PMID: 38684444 DOI: 10.1080/13543776.2024.2349739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Accepted: 04/26/2024] [Indexed: 05/02/2024]
Abstract
INTRODUCTION The oral cavity harbors an extensive array of over 700 microorganisms, forming the most complex biome of the entire human body, with bacterial species being the most abundant. Oral diseases, e.g. periodontitis and caries, are strictly associated with bacterial dysbiosis. Porphyromonas gingivalis and Streptococcus mutans stand out among bacteria colonizing the oral cavity. AREAS COVERED After a brief overview of the bacterial populations in the oral cavity and their roles in regulating (flora) oral cavity or causing diseases like periodontal and cariogenic pathogens, we focused our attention on P. gingivalis and S. mutans, searching for the last-5-year patents dealing with the proposal of new strategies to fight their infections. Following the PRISMA protocol, we filtered the results and analyzed over 100 applied/granted patents, to provide an in-depth insight into this R&D scenario. EXPERT OPINION Several antibacterial proposals have been patented in this period, from both chemical - peptides and small molecules - and biological - probiotics and antibodies - sources, along with natural extracts, polymers, and drug delivery systems. Most of the inventors are from China and Korea and their studies also investigated anti-inflammatory and antioxidant effects, being beneficial to oral health through a prophylactic, protective, or curative effect.
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Affiliation(s)
| | | | | | - Andrea Angeli
- Neurofarba Department, University of Florence, Florence, Italy
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Pallavi P, Sahoo PP, Sen SK, Raut S. Comparative evaluation of anti-biofilm and anti- adherence potential of plant extracts against Streptococcus mutans: A therapeutic approach for oral health. Microb Pathog 2024; 188:106514. [PMID: 38296118 DOI: 10.1016/j.micpath.2023.106514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/20/2023] [Accepted: 12/21/2023] [Indexed: 02/06/2024]
Abstract
Dental caries predominantly attributed to the cariogenic nature of Streptococcus mutans, continue to pose a substantial global challenge to oral health. In response to this challenge, this study aimed to evaluate the effectiveness of leaf extracts (LEs) and essential oils (EOs) derived from different medicinal plants in inhibiting the growth of Streptococcus mutans biofilm. In vitro and in silico approaches were employed to identify active compounds and assess their inhibitory effects on S. mutans. Minimum Inhibitory Concentration (MIC) and Minimum Bactericidal Concentration (MBC) were measured to determine the anti-biofilm and anti-adherence activity against S. mutans. Biofilm viability (CFU/mL) and extracellular polymeric substance (EPS) concentration were quantified. GC-MS analysis was utilized to identify active compounds in the most effective plant extracts exhibiting anti-S. mutans activity. A high-throughput screening focused on the interaction between these compounds and the target enzyme SortaseA (SrtA) using molecular docking was performed. Results indicated that Cymbopogon citratus displayed the highest efficacy in reducing S. mutans biofilm formation and adhesion activity, achieving 90 % inhibition at an MIC value of 12 μg/mL. Among the 12 bioactive compounds identified, trans-Carvyl acetate exhibited the lowest binding energy with SrtA (-6.0 Kcal/mole). Trans-Carvyl acetate also displayed favorable pharmacokinetic properties. This study provides novel insights into the anti-S. mutans properties of C. citratus and suggests its potential as a therapeutic approach for oral health. Further research is needed to explore the combined effect of plant extracts for enhanced protection against dental caries.
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Affiliation(s)
- Preeti Pallavi
- Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, 751003, Odisha, India
| | - Pragnya Paramita Sahoo
- Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, 751003, Odisha, India
| | - Sudip Kumar Sen
- Biostadt India Limited, Waluj, Aurangabad, 431136, Maharashtra, India
| | - Sangeeta Raut
- Centre for Biotechnology, School of Pharmaceutical Sciences, Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, 751003, Odisha, India.
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Tessema FB, Gonfa YH, Asfaw TB, Tadesse MG, Bachheti RK. Antioxidant Activity of Flavonoids and Phenolic Acids from Dodonaea angustifolia Flower: HPLC Profile and PASS Prediction. J CHEM-NY 2023. [DOI: 10.1155/2023/8315711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
Abstract
Background. Dodonaea angustifolia is a known medicinal plant across East Arica. The flower of D. angustifolia is not well investigated in terms of phytochemistry and biological activities. This study aims to investigate the presence of flavonoids and phenolic acids in the flower of D. angustifolia and its antioxidant activity. Methods. Preliminary phytochemical screening was carried out using the standard protocols. Antioxidant activity evaluation using DPPH assay and total phenol content (TPC) and total flavonoid content (TFC) determinations in the flower extract were compared with the values of the leaf extract. UHPLC-DAD analysis was managed to develop the profile of the flower extract. Prediction of biological activity spectra for substances (PASS) was done using an online server for antioxidant and related activities. Results. Preliminary phytochemical screening and TPC and TFC values confirmed the presence of flavonoids and phenolic acids. From the HPLC analysis of flavonoids, quercetin, myricetin, rutin, and phenolic acids such as chlorogenic acid, gallic acid, and syringic acid were detected and quantified. The biological activity spectrum was predicted for the detected and quantified polyphenols. Conclusions. D. angustifolia flower is a rich source of flavonoids and phenolic acids, which are extractable and can be checked for further biological activity. It was possible to identify and quantify phenolic compounds through HPLC analysis in the methanol extract of D. angustifolia flower. The PASS biological activity prediction results showed that there were stronger antioxidant activities for the identified flavonoids. Future work will emphasize the isolation and characterization of active principles responsible for bioactivity.
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Madiba M, Oluremi BB, Gulube Z, Oderinlo OO, Marimani M, Osamudiamen PM, Patel M. Anti-Streptococcus mutans, anti-adherence and anti-acidogenic activity of Uvaria chamae P. Beauv. JOURNAL OF ETHNOPHARMACOLOGY 2023; 300:115673. [PMID: 36096348 DOI: 10.1016/j.jep.2022.115673] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 08/16/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Streptococcus mutans a key pathogen, produces biofilm, acids and extracellular polysaccharides in the oral cavity; which leads to the development of dental caries. Control of these pathogenic markers can prevent dental caries. Uvaria chamae P. Beauv. is a medicinal plant traditionally used for many ailments including oral infections. Root, leaves and bark extracts has proven antibacterial activity including activity against caries causing S. mutans. However, its effect on the virulence properties of S. mutans, responsible for the development of dental caries, has not been studied. AIM OF THE STUDY This study investigated the phytochemical constituents, anti-S. mutans, anti-adherence and anti-acidogenic activity of U. chamae root extract. MATERIALS AND METHODS Extracts were prepared and phytochemical analysis was performed. Minimum inhibitory concentrations (MIC) were determined, and MIC and sub-MIC concentrations of the best solvent were selected for their effect on the virulence factors of S. mutans. The results were analysed using one-way ANOVA and Wilcoxon Rank Sum Tests. RESULTS The dichloromethane extract, with proanthocyanidin as a major chemical constituent, produced an MIC of 0.02 mg/ml. At 6 h, exposure to 0.005, 0.01, and 0.02 mg/ml extract significantly reduced S. mutans adherence by 39, 59, and 77% respectively (p < 0.05). Uvaria chamae also significantly inhibited acid production in S. mutans at 10, 12, 14 and 16 h (p < 0.05). At ½ MIC, the plant extract caused remarkable downregulation of the virulence genes responsible for the adherence, biofilm formation, extracellular polysaccharide synthesis and acid production. CONCLUSIONS This suggests that U. chamae extract may potentially be used to inhibit the proliferation of S. mutans and silencing the expression of pathology-related genes, which will prevent the development of dental caries.
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Affiliation(s)
- M Madiba
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand and National Health Laboratory Services, Johannesburg, South Africa.
| | - B B Oluremi
- Department of Pharmaceutical Microbiology, Faculty of Pharmacy, University of Ibadan, Ibadan, Nigeria.
| | - Z Gulube
- Department of Oral Biological Sciences, School of Oral Health Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
| | - O O Oderinlo
- Department of Chemistry, Federal University, Otuoke, Bayelsa State, Nigeria.
| | - M Marimani
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand and National Health Laboratory Services, Johannesburg, South Africa.
| | - P M Osamudiamen
- Department of Chemical and Food Sciences, Bells University of Technology, Ota, Ogun State, Nigeria.
| | - M Patel
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand and National Health Laboratory Services, Johannesburg, South Africa.
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Wu Y, Hong L, Hu X, Li Y, Yang C. Efficient Antimicrobial Effect of Alginate-Catechol/Fe 2+ Coating on Hydroxyapatite toward Oral Care Application. ACS APPLIED BIO MATERIALS 2022; 5:2152-2162. [PMID: 35446545 DOI: 10.1021/acsabm.1c01254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reducing the formation of oral bacterial biofilms is critical to prevent common dental diseases. Though many strategies for restricting bacterial adhesion on tooth surfaces have been reported, a simple method for efficient oral bacteriostasis is still highly expected. Herein, we have proved a soft gel made of an alginate-catechol conjugate (SA-DA) and the ferrous cation (Fe2+) as an effective antibacterial coating on hydroxyapatite (HAP, a tooth model). As suggested by quartz crystal microbalance (QCM) measurements, SA-DA/Fe2+ coating possessed a high binding affinity to HAP without destruction by either immersion in artificial saliva or simulated tooth brushing. Significantly less protein (bovine serum albumin) and Streptococcus mutans (S. mutans, an oral bacterial model) could be found on HAP after coating with SA-DA/Fe2+, indicating that the prepared gel could resist well the adhesion of biofouling and microbes due to its hydrophilicity. Notably, such an antibacterial effect (around 70% S. mutans was inhibited) could be maintained for 3 d, which resulted from the extremely good stability of SA-DA/Fe2+ coating, as confirmed by QCM analysis. Our results may offer possibilities for developing applications in order to further improve oral hygiene.
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Affiliation(s)
- Yingchang Wu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Liu Hong
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Xiaofeng Hu
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Yunxing Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
| | - Cheng Yang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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Andra S, Balu SK, Ponnada S, Mohan S, Hossain MS, Sivakumar B, Palanivel B, Alsalme A, Muthalagu M. Antimicrobial and Toxicity Studies of
Dodonaea aungustifolia
Extracts‐Mediated Green Synthesized Copper Oxide Particles. ChemistrySelect 2022. [DOI: 10.1002/slct.202104017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Swetha Andra
- Center for Nanoscience and Technology Chennai Institute of Technology Chennai 600069 Tamilnadu India
| | - Satheesh kumar Balu
- Department of Oral Pathology Saveetha Dental College Chennai 600077 Tamilnadu India
| | - Srikanth Ponnada
- Sustainable Materials and Catalysis Research Laboratory (SMCRL) Department of Chemistry Indian Institute of Technology Jodhpur Karwad Jodhpur 342037 India
- Department of Engineering Chemistry Andhra University College of Engineering (A) Andhra University Visakhapatnam 530003 India
| | - Sakar Mohan
- Centre for Nano and Material Sciences Jain University Bangalore 562112 Karnataka India
| | - Md Shahadat Hossain
- Department of Innovation Systems Engineering Graduate School of Engineering Utsunomiya University Yoto 7–1-2 Utsunomiya 321–8585 Japan
| | - Bharathkumar Sivakumar
- National Centre for Nanoscience and Nanotechnology University of Madras Chennai 600025 Tamilnadu India
| | - Baskaran Palanivel
- Department of Physics Kings Engineering College Sriperumbudur, Kancheepuram 602117 Tamil Nadu India
| | - Ali Alsalme
- Department of Chemistry College of Science King Saud University Riyadh 1145 Saudi Arabia
| | - Murugesan Muthalagu
- Department of Textile Technology Anna University Chennai 600025 Tamilnadu India
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Navarro-Pérez ML, Vadillo-Rodríguez V, Fernández-Babiano I, Pérez-Giraldo C, Fernández-Calderón MC. Antimicrobial activity of a novel Spanish propolis against planktonic and sessile oral Streptococcus spp. Sci Rep 2021; 11:23860. [PMID: 34903790 PMCID: PMC8668902 DOI: 10.1038/s41598-021-03202-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Accepted: 11/22/2021] [Indexed: 11/10/2022] Open
Abstract
Increased bacterial resistance to traditional antimicrobial agents has prompted the use of natural products with antimicrobial properties such as propolis, extensively employed since ancient times. However, the chemical composition of propolis extracts is extremely complex and has been shown to vary depending on the region and season of collection, due to variations in the flora from which the pharmacological substances are obtained, being therefore essential for their antimicrobial activity to be checked before use. For this purpose, we evaluate the in vitro antimicrobial and anti-biofilm activity of a new and promising Spanish ethanolic extract of propolis (SEEP) on Streptococcus mutans and Streptococcus sanguinis, responsible, as dominant 'pioneer' species, for dental plaque. Results reveal that S. sanguinis is more sensitive to SEEP, slowing and retarding its growth considerably with lower concentrations than those needed to produce the same effect in S. mutans. SEEP presents concentration- and time-dependent killing activity and, furthermore, some of the subinhibitory concentrations employed increased biofilm formation even when bacterial growth decreased. Mono and dual-species biofilms were also inhibited by SEEP. Findings obtained clearly show the relevance of using biofilm and subinhibitory concentration models to determine optimal treatment concentrations.
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Affiliation(s)
- M Luisa Navarro-Pérez
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, Badajoz, Spain. .,Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain.
| | - Virginia Vadillo-Rodríguez
- Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain.,Department of Applied Physics, Area of Applied Physics, University of Extremadura, Badajoz, Spain.,Biomedical Research Network Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain
| | - Irene Fernández-Babiano
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, Badajoz, Spain.,Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain
| | - Ciro Pérez-Giraldo
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, Badajoz, Spain.,Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain.,Biomedical Research Network Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain
| | - M Coronada Fernández-Calderón
- Department of Biomedical Science, Area of Microbiology, University of Extremadura, Badajoz, Spain.,Instituto Universitario de Investigación Biosanitaria de Extremadura (INUBE), Badajoz, Spain.,Biomedical Research Network Centre on Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Badajoz, Spain
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8
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Rather MA, Gupta K, Mandal M. Microbial biofilm: formation, architecture, antibiotic resistance, and control strategies. Braz J Microbiol 2021; 52:1701-1718. [PMID: 34558029 PMCID: PMC8578483 DOI: 10.1007/s42770-021-00624-x] [Citation(s) in RCA: 119] [Impact Index Per Article: 39.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 09/19/2021] [Indexed: 01/08/2023] Open
Abstract
The assembly of microorganisms over a surface and their ability to develop resistance against available antibiotics are major concerns of interest. To survive against harsh environmental conditions including known antibiotics, the microorganisms form a unique structure, referred to as biofilm. The mechanism of biofilm formation is triggered and regulated by quorum sensing, hostile environmental conditions, nutrient availability, hydrodynamic conditions, cell-to-cell communication, signaling cascades, and secondary messengers. Antibiotic resistance, escape of microbes from the body's immune system, recalcitrant infections, biofilm-associated deaths, and food spoilage are some of the problems associated with microbial biofilms which pose a threat to humans, veterinary, and food processing sectors. In this review, we focus in detail on biofilm formation, its architecture, composition, genes and signaling cascades involved, and multifold antibiotic resistance exhibited by microorganisms dwelling within biofilms. We also highlight different physical, chemical, and biological biofilm control strategies including those based on plant products. So, this review aims at providing researchers the knowledge regarding recent advances on the mechanisms involved in biofilm formation at the molecular level as well as the emergent method used to get rid of antibiotic-resistant and life-threatening biofilms.
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Affiliation(s)
- Muzamil Ahmad Rather
- Department of Molecular Biology and Biotechnology, Tezpur University (A Central University), Napaam, Tezpur, 784028, Assam, India
| | - Kuldeep Gupta
- Department of Molecular Biology and Biotechnology, Tezpur University (A Central University), Napaam, Tezpur, 784028, Assam, India
| | - Manabendra Mandal
- Department of Molecular Biology and Biotechnology, Tezpur University (A Central University), Napaam, Tezpur, 784028, Assam, India.
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Priya VT, N B, V S, P S, N D K, C K, Alfarhan A, Antonisamy P. Partially purified lead molecules from Dodonaea viscosa and their antimicrobial efficacy against infectious human pathogens. J Infect Public Health 2021; 14:1822-1830. [PMID: 34836798 DOI: 10.1016/j.jiph.2021.11.007] [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: 08/24/2021] [Revised: 11/01/2021] [Accepted: 11/06/2021] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND The utilization of medicinal plants and their drugs have the advantage of reducing side effects compared with manufactured antimicrobials. Artificial drugs have unpleasant side effects, further, the number of drug resistant pathogens is increasing, thus huge challenge for control of resistant pathogens. Therefore, the current research explores the potential of partially purified bioactive compounds from Dodonaea viscosa against certain human pathogens. METHODS Healthy leaves of D. viscosa (L.) were collected, extracted and optimized with different solvents. Preliminary phytochemical screening of the extracts was done and antibacterial activities were tested against human pathogens. The active crude extract was further purified by column chromatography and the homogeneity was confirmed by thin layer chromatography (TLC). The partially purified compounds were screened further for antibacterial, antibiofilm and anticancer activities. RESULTS The crude ethanol extract of D. viscosa leaves showed the presence of phytochemical like tannins, alkaloids, flavanoids, terpenoids, glycosides, steroids and phenols. Ethanol extract exhibited the maximum zone of inhibition (11 mm) against S. agalactiae, B. cereus, S. typhi and E. coli at 15 mg when compared with other bacteria. Column chromatography fractions Dv12 and Dv20 exhibited the maximum zone of inhibition against B. cereus. 1000 μg of Dv12 partially purified compound against streptococcus isolates in glass test tube showed biofilm inhibition range of 34.4%-63.1%. Whereas B. cereus, S. aureus, S. typhi, and K. pneumoniae showed 31.1%-53.6% biofilm inhibition compared to curcumin control. Active fractions of Dv12 and Dv20 increased concentration confirmed that the gradual decrease in cell density and possesses growth inhibition towards A 549 human lung adenocarcinoma cells. CONCLUSION We have extracted the bioactive compounds from D. viscosa (L.) leaves and tested the activity of a partially purified compound against human pathogenic bacteria, biofilm formation and cytotoxicity against A 549 human lung adenocarcinoma cells. The purified bioactive compounds might be used as therapeutic agents against different microbial infections such as skin infection, throat infection and other infectious diseases.
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Affiliation(s)
- V Thamil Priya
- Department of Chemistry, VHNSN College, Virudhunagar, 626 001, Tamil Nadu, India
| | - Balasubramanian N
- Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, 625 021, Tamil Nadu, India
| | - Shanmugaiah V
- Department of Microbial Technology, School of Biological Sciences, Madurai Kamaraj University, Madurai, 625 021, Tamil Nadu, India.
| | - Sathishkumar P
- Department of Plant Biotechnology, School of Biotechnology, Madurai Kamaraj University, Madurai, 625 021, Tamil Nadu, India
| | - Kannan N D
- Department of Plant Biotechnology, School of Biotechnology, Madurai Kamaraj University, Madurai, 625 021, Tamil Nadu, India
| | - Karunakaran C
- Department of Chemistry, VHNSN College, Virudhunagar, 626 001, Tamil Nadu, India.
| | - Ahmed Alfarhan
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box-2455, Riyadh 11451, Saudi Arabia
| | - Paulrayer Antonisamy
- Ilwonbio Co., Ltd., Department of Physiology, Wonkwang University School of Korean Medicine, Iksan, Jeonbuk, South Korea
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10
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Antimicrobials from Medicinal Plants: An Emergent Strategy to Control Oral Biofilms. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11094020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Oral microbial biofilms, directly related to oral diseases, particularly caries and periodontitis, exhibit virulence factors that include acidification of the oral microenvironment and the formation of biofilm enriched with exopolysaccharides, characteristics and common mechanisms that, ultimately, justify the increase in antibiotics resistance. In this line, the search for natural products, mainly obtained through plants, and derived compounds with bioactive potential, endorse unique biological properties in the prevention of colonization, adhesion, and growth of oral bacteria. The present review aims to provide a critical and comprehensive view of the in vitro antibiofilm activity of various medicinal plants, revealing numerous species with antimicrobial properties, among which, twenty-four with biofilm inhibition/reduction percentages greater than 95%. In particular, the essential oils of Cymbopogon citratus (DC.) Stapf and Lippia alba (Mill.) seem to be the most promising in fighting microbial biofilm in Streptococcus mutans, given their high capacity to reduce biofilm at low concentrations.
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Beshah F, Hunde Y, Getachew M, Bachheti RK, Husen A, Bachheti A. Ethnopharmacological, phytochemistry and other potential applications of Dodonaea genus: A comprehensive review. CURRENT RESEARCH IN BIOTECHNOLOGY 2020. [DOI: 10.1016/j.crbiot.2020.09.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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LC-MS-Based Metabolomics for the Chemosystematics of Kenyan Dodonaea viscosa Jacq (Sapindaceae) Populations. Molecules 2020; 25:molecules25184130. [PMID: 32927597 PMCID: PMC7570515 DOI: 10.3390/molecules25184130] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/23/2020] [Accepted: 09/02/2020] [Indexed: 12/22/2022] Open
Abstract
Dodonaea viscosa Jacq (Sapindaceae) is a medicinal plant with a worldwide distribution. The species has undergone enormous taxonomic changes which caused confusion amongst plant users. In Kenya, for example, two varieties are known to exist based on morphology, i.e., D. viscosa var. viscosa along the coast, and D. viscosa var. angustifolia in the Kenyan inland. These two taxa are recognized as distinct species in some reports. This prompted us to apply metabolomics to understand the relationship among naturally occurring populations of D. viscosa in Kenya, and to identify compounds that can assist in taxonomic delineation of the different varieties of D. viscosa from different parts of Kenya. The phytochemical variability of Kenyan D. viscosa var. angustifolia populations collected from four different geographical regions (Nanyuki, Machakos, Nairobi, and Narok) and one coastal D. viscosa var. viscosa (the Gazi) were analyzed by LC-MS using a metabolomics-driven approach. Four known compounds, two diterpenoids (dodonic acid (1), hautriwaic acid lactone (3), and two flavonoids (5,7,4',5'-tetrahydroxy-3,6,2'-trimethoxyflavone (2) and catechin (4)) were isolated and purified from the Gazi coastal collection. The presence of these compounds and their relative abundance in other populations was determined by LC-MS analyses. Multivariate statistical analyses of LC-MS data was used for the visualization of the patterns of variation and identification of additional compounds. Eleven discriminant compounds responsible for separating chemometric clusters were tentatively identified. In an antimicrobial assay, hautriwaic acid lactone (3) and catechin (4) were the most active compounds followed by the extract from the coastal (Gazi) population. The clustering pattern of the five populations of D. viscosa suggested that the metabolite profiles were influenced by geo-environmental conditions and did not support the current classification of D. viscosa based on morphology. This study disputes the current classification of D. viscosa in Kenya and recommends revision using tools such as molecular phylogenetics.
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Anti-acidogenic, anti-biofilm and slow release properties of Dodonaea viscosa var. angustifolia flavone stabilized polymeric nanoparticles. Arch Oral Biol 2020; 109:104586. [DOI: 10.1016/j.archoralbio.2019.104586] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Revised: 09/26/2019] [Accepted: 10/06/2019] [Indexed: 11/21/2022]
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Sagbo IJ, Mbeng WO. Are plants used in the Eastern Cape province for cosmetics fully commercialized? Indian J Pharmacol 2019; 51:140-149. [PMID: 31391681 PMCID: PMC6644182 DOI: 10.4103/ijp.ijp_262_18] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/30/2018] [Accepted: 06/10/2019] [Indexed: 11/04/2022] Open
Abstract
Plants have been used for years for various cosmetic purposes. In the Eastern Cape province of South Africa, a large proportion of the population reliant (to some extent) on botanical resources for beauty and health. Despite the use of these botanical resources for various cosmetic purposes, only a few have been fully commercialized or used as ingredients in cosmetic formulation. The present study aimed to review plant species that are fully explored commercially for cosmetic products in the Eastern Cape province. A survey of cosmetic products with plant-based ingredients was done covering the major supermarkets (SPAR, Shoprite, and Pick n Pay), cosmetic shops (Clicks), and pharmacies in the Eastern Cape province, and electronic databases including Embase, Google Scholar, Medline, PubMed, Scopus, SciFinder®, Springer, Science Direct, and Web of Science were used as data sources for ethnobotanical information. Surprisingly, out of 150 plant species used by both Xhosa men and women for various cosmeceutical purposes, only six plant species have been used commercially with regard to cosmeceutical application. These plants species belong to five major plant families, namely Lamiaceae (two species), Asphodelaceae (one species) Cucurbitaceae (one species), Oleaceae (one species), and Verbenaceae (one species). The findings revealed that the use of Eastern Cape plants for cosmetic purposes has not been fully explored commercially. Thus, there is a need for cosmeceutical industries to explore these species commercially in order to develop new possible cosmetic products for local and international markets.
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Affiliation(s)
- Idowu Jonas Sagbo
- School of Biology and Environmental Sciences, University of Mpumalanga, Mbombela, South Africa
| | - Wilfred Otang Mbeng
- School of Biology and Environmental Sciences, University of Mpumalanga, Mbombela, South Africa
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Chen Z, Yang G, Lu S, Chen D, Fan S, Xu J, Wu B, He J. Design and antimicrobial activities of LL-37 derivatives inhibiting the formation of Streptococcus mutans
biofilm. Chem Biol Drug Des 2019; 93:1175-1185. [PMID: 30635992 DOI: 10.1111/cbdd.13419] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 10/03/2018] [Accepted: 10/07/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Zhao Chen
- Department of Stomatology; Nanfang Hospital; Southern Medical University; Guangzhou China
- Group of Peptides and Natural Products Research; School of Pharmaceutical Sciences; Southern Medical University; Guangzhou China
| | - Guang Yang
- Group of Peptides and Natural Products Research; School of Pharmaceutical Sciences; Southern Medical University; Guangzhou China
| | - Shengsheng Lu
- Group of Peptides and Natural Products Research; School of Pharmaceutical Sciences; Southern Medical University; Guangzhou China
| | - Daiwei Chen
- Group of Peptides and Natural Products Research; School of Pharmaceutical Sciences; Southern Medical University; Guangzhou China
| | - Sheng Fan
- Group of Peptides and Natural Products Research; School of Pharmaceutical Sciences; Southern Medical University; Guangzhou China
| | - Junyang Xu
- Department of Stomatology; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - Buling Wu
- Department of Stomatology; Nanfang Hospital; Southern Medical University; Guangzhou China
| | - Jian He
- Group of Peptides and Natural Products Research; School of Pharmaceutical Sciences; Southern Medical University; Guangzhou China
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Ngabaza T, Moeno S, Patel M. Anti-acidogenic and anti-biofilm activity of 5,6,8-trihydroxy-7-methoxy-2-(4-methoxyphenyl)-4H-chromen-4-one. Microb Pathog 2018; 123:149-152. [DOI: 10.1016/j.micpath.2018.07.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2018] [Revised: 07/04/2018] [Accepted: 07/05/2018] [Indexed: 10/28/2022]
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Akhalwaya S, van Vuuren S, Patel M. An in vitro investigation of indigenous South African medicinal plants used to treat oral infections. JOURNAL OF ETHNOPHARMACOLOGY 2018; 210:359-371. [PMID: 28888760 DOI: 10.1016/j.jep.2017.09.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 08/30/2017] [Accepted: 09/03/2017] [Indexed: 06/07/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Over a 120 South African medicinal plants are used for the treatment of oral diseases. Despite the vast collection of antimicrobial studies being done on South African plants, there is still limited research on pathogens associated with oral infections. In consultation with the available ethnobotanical literature, this study investigates the antimicrobial efficacy of some South African medicinal plants against oral pathogens. AIM OF THE STUDY To provide a detailed account of the antimicrobial properties of selected South African medicinal plants used traditionally to treat oral infections. The effect on Streptococcus mutans biofilm formation and the toxicity profiles of these plants are also investigated. MATERIALS AND METHODS A total of 136 aqueous and organic extracts and six essential oils were prepared from 31 different plant species. These plant samples were screened for antimicrobial efficacy against nine oral pathogens using the micro-titre plate dilution assay. Plant extracts that were found to have noteworthy antimicrobial activity against S. mutans were further evaluated on the effect on S. mutans biofilm formation using the glass slide technique. The toxicity profiles of plant samples that were found to have noteworthy antimicrobial activity were evaluated using the brine shrimp lethality assay. RESULTS The organic extract of Cissampelos torulosa stems displayed the lowest MIC value of 0.05mg/mL against both Lactobacillus spp. This high antimicrobial activity was also observed with the organic extract of Spirostachys africana leaves against Candida albicans. In some instances, a direct relationship was found between the traditional use of the plant and the antimicrobial activity observed. For example, noteworthy activity (MIC < 1.00mg/mL) was observed against all three Candida spp. when tested against Clematis brachiata (leaves), a plant traditionally used to treat oral thrush. Englerophytum magalismonatanum stems displayed notable activity against both Streptococcus spp. (MIC 0.83mg/mL against S. mutans and MIC 0.67mg/mL against S. sanguis). Spirostachys africana leaves displayed the greatest anti-adherent properties against S. mutans biofilm formation at both 24 and 48h, reducing the biofilm by 97.56% and 86.58% respectively. The majority of plant samples tested in the brine shrimp lethality assay (BSLA) were considered safe, however, 13 plant samples were considered toxic, at a concentration of 1mg/mL. CONCLUSION Noteworthy antimicrobial activity for plants species such as C. brachiata and E. magalismonatnum provides validation for the traditional use of these plants. Spirostachys africana displayed the greatest reduction of adherent S. mutans cells. The BSLA results revealed that the majority of the plant samples were not toxic in nature. The findings from the results favour the potential use of these plants in treating oral diseases such as dental caries, periodontal diseases and oral thrush.
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Affiliation(s)
- S Akhalwaya
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - S van Vuuren
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
| | - M Patel
- Department of Oral Biological Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Van Vuuren S, Holl D. Antimicrobial natural product research: A review from a South African perspective for the years 2009-2016. JOURNAL OF ETHNOPHARMACOLOGY 2017; 208:236-252. [PMID: 28694104 DOI: 10.1016/j.jep.2017.07.011] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 06/28/2017] [Accepted: 07/07/2017] [Indexed: 05/27/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE This review provides information on the antimicrobial research which has taken place on South African natural products for the last eight years (2009-2016). This important field is the backbone of all studies involving the use of medicinal plants against infectious diseases and hence can form the mainstay for future studies. MATERIALS AND METHODS All publications within the years 2009-2016 were considered. Exclusion criteria were studies not involving South African medicinal natural products and those publications where full articles could not be accessed. An overview of the most common experimental methods used and new advances in terms of antimicrobial investigations are provided. Disease categories selected for further investigation were skin and wounds, respiratory, gastrointestinal, sexually transmitted and ophthalmic infections amongst others. Alternate natural products and combinations studies were also included. RESULTS The minimum inhibitory concentration (MIC) was the most commonly used experimental method to determine antimicrobial activity. Staphylococcus aureus was the most commonly tested skin pathogen and Klebsiella pneumoniae was the most common pathogen implicated in respiratory disorders. Only 20% of gastrointestinal studies included commonly implicated pathogens such as Shigella flexneri and Campylobacter species. CONCLUSION Multidisciplinary studies have emerged as a strong support for antimicrobial investigations and show the importance of including toxicity when studying antimicrobial efficacy. Alternate approaches (for example biofilms and quorum sensing) at examining antimicrobial effects are encouraged. Studies on resistant strains require more insight and future recommendations should look at consistent dosing and investigations on compound interactions amongst others.
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Affiliation(s)
- S Van Vuuren
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa.
| | - D Holl
- Department of Pharmacy and Pharmacology, Faculty of Health Sciences, University of the Witwatersrand, 7 York Road, Parktown 2193, South Africa
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Kannappan A, Gowrishankar S, Srinivasan R, Pandian SK, Ravi AV. Antibiofilm activity of Vetiveria zizanioides root extract against methicillin-resistant Staphylococcus aureus. Microb Pathog 2017; 110:313-324. [PMID: 28710012 DOI: 10.1016/j.micpath.2017.07.016] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Revised: 09/13/2016] [Accepted: 07/10/2017] [Indexed: 11/29/2022]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is a leading human pathogen responsible for causing chronic clinical manifestation worldwide. In addition to antibiotic resistance genes viz. mecA and vanA, biofilm formation plays a prominent role in the pathogenicity of S. aureus by enhancing its resistance to existing antibiotics. Considering the role of folk medicinal plants in the betterment of human health from the waves of multidrug resistant bacterial infections, the present study was intended to explore the effect of Vetiveria zizanioides root on the biofilm formation of MRSA and its clinical counterparts. V. zizanioides root extract (VREX) showed a concentration-dependent reduction in biofilm formation without hampering the cellular viability of the tested strains. Micrographs of scanning electron microscopy (SEM) and confocal laser scanning microscopy (CLSM) portrayed the devastating impact of VREX on biofilm formation. In addition to antibiofilm activity, VREX suppresses the production of biofilm related phenotypes such as exopolysaccharide, slime and α-hemolysin toxin. Furthermore, variation in FT-IR spectra evidenced the difference in cellular factors of untreated and VREX treated samples. Result of mature biofilm disruption assay and down regulation of genes like fnbA, fnbB, clfA suggested that VREX targets these adhesin genes responsible for initial adherence. GC-MS analysis revealed the presence of sesquiterpenes as a major constituent in VREX. Thus, the data of present study strengthen the ethnobotanical value of V. zizanioides and concludes that VREX contain bioactive molecules that have beneficial effect over the biofilm formation of MRSA and its clinical isolates.
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Affiliation(s)
- Arunachalam Kannappan
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Shanmugaraj Gowrishankar
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | - Ramanathan Srinivasan
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, Tamil Nadu, India
| | | | - Arumugam Veera Ravi
- Department of Biotechnology, Science Campus, Alagappa University, Karaikudi 630003, Tamil Nadu, India.
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Effect of Punica granatum on the virulence factors of cariogenic bacteria Streptococcus mutans. Microb Pathog 2016; 98:45-9. [PMID: 27354207 DOI: 10.1016/j.micpath.2016.06.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Revised: 06/06/2016] [Accepted: 06/24/2016] [Indexed: 11/23/2022]
Abstract
Dental caries is caused by acids produced by biofilm-forming Streptococcus mutans from fermentable carbohydrates and bacterial byproducts. Control of these bacteria is important in the prevention of dental caries. This study investigated the effect of the fruit peel of Punica granatum on biofilm formation, acid and extracellular polysaccharides production (EPS) by S. mutans. Pomegranate fruit peels crude extracts were prepared. The Minimum bactericidal concentrations (MBC) were determined against S. mutans. At 3 sub-bactericidal concentrations, the effect on the acid production, biofilm formation and EPS production was determined. The results were analysed using Kruskal-Wallis and Wilcoxon Rank Sum Tests. The lowest MBC was 6.25 mg/mL. Punica granatum significantly inhibited acid production (p < 0.01). After 6 and 24 h, it significantly reduced biofilm-formation by 91% and 65% respectively (p < 0.01). The plant extract did not inhibit the production of soluble EPS in either the biofilm or the planktonic growth. However, it significantly reduced the insoluble EPS in the biofilm and the plantktonic (p = < 0.01) form of S. mutans. The crude extract of P. granatum killed cariogenic S. mutans at high concentrations. At sub-bactericidal concentrations, it reduced biofilm formation, acid and EPS production. This suggests that P. granatum extract has the potential to prevent dental caries.
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Nijampatnam B, Casals L, Zheng R, Wu H, Velu SE. Hydroxychalcone inhibitors of Streptococcus mutans glucosyl transferases and biofilms as potential anticaries agents. Bioorg Med Chem Lett 2016; 26:3508-13. [PMID: 27371109 DOI: 10.1016/j.bmcl.2016.06.033] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 06/12/2016] [Accepted: 06/13/2016] [Indexed: 11/28/2022]
Abstract
Streptococcus mutans has been implicated as the major etiological agent in the initiation and the development of dental caries due to its robust capacity to form tenacious biofilms. Ideal therapeutics for this disease will aim to selectively inhibit the biofilm formation process while preserving the natural bacterial flora of the mouth. Several studies have demonstrated the efficacies of flavonols on S. mutans biofilms and have suggested the mechanism of action through their effect on S. mutans glucosyltransferases (Gtfs). These enzymes metabolize sucrose into water insoluble and soluble glucans, which are an integral measure of the dental caries pathogenesis. Numerous studies have shown that flavonols and polyphenols can inhibit Gtf and biofilm formation at millimolar concentrations. We have screened a group of 14 hydroxychalcones, synthetic precursors of flavonols, in an S. mutans biofilm assay. Several of these compounds emerged to be biofilm inhibitors at low micro-molar concentrations. Chalcones that contained a 3-OH group on ring A exhibited selectivity for biofilm inhibition. Moreover, we synthesized 6 additional analogs of the lead compound and evaluated their potential activity and selectivity against S. mutans biofilms. The most active compound identified from these studies had an IC50 value of 44μM against biofilm and MIC50 value of 468μM against growth displaying >10-fold selectivity inhibition towards biofilm. The lead compound displayed a dose dependent inhibition of S. mutans Gtfs. The lead compound also did not affect the growth of two commensal species (Streptococcus sanguinis and Streptococcus gordonii) at least up to 200μM, indicating that it can selectively inhibit cariogenic biofilms, while leaving commensal and/or beneficial microbes intact. Thus non-toxic compounds have the potential utility in public oral health regimes.
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Affiliation(s)
- Bhavitavya Nijampatnam
- Department of Chemistry, University of Alabama at Birmingham, 901, 14th Street S, Birmingham, AL 35294, USA
| | - Luke Casals
- Department of Chemistry, University of Alabama at Birmingham, 901, 14th Street S, Birmingham, AL 35294, USA
| | - Ruowen Zheng
- Department of Chemistry, University of Alabama at Birmingham, 901, 14th Street S, Birmingham, AL 35294, USA
| | - Hui Wu
- Department of Pediatric Dentistry, UAB School of Dentistry, Birmingham, AL 35294, USA.
| | - Sadanandan E Velu
- Department of Chemistry, University of Alabama at Birmingham, 901, 14th Street S, Birmingham, AL 35294, USA.
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Plants and other natural products used in the management of oral infections and improvement of oral health. Acta Trop 2016; 154:6-18. [PMID: 26522671 DOI: 10.1016/j.actatropica.2015.10.019] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2015] [Revised: 10/21/2015] [Accepted: 10/25/2015] [Indexed: 11/20/2022]
Abstract
Challenges of resistance to synthetic antimicrobials have opened new vistas in the search for natural products. This article rigorously reviews plants and other natural products used in oral health: Punica granatum L. (pomegranate), Matricaria recutita L. (chamomile), Camellia sinensis (L.) Kuntze (green tea), chewing sticks made from Diospyros mespiliformis Hochst. ex A.D.C., Diospyros lycioides Desf., and Salvadora persica L. (miswak), honey and propolis from the manuka tree (Leptospermum scoparium J.R. Forst. & G. Forst.), rhein from Rheum rhabarbarum L. (rhubarb), dried fruits of Vitis vinifera L. (raisins), essential oils, probiotics and mushrooms. Further, the review highlights plants from Africa, Asia, Brazil, Mexico, Europe, and the Middle East. Some of the plants' antimicrobial properties and chemical principles have been elucidated. While the use of natural products for oral health is prominent in resource-poor settings, antimicrobial testing is mainly conducted in the following countries (in decreasing order of magnitude): India, South Africa, Brazil, Japan, France, Egypt, Iran, Mexico, Kenya, Switzerland, Nigeria, Australia, Uganda, and the United Kingdom. While the review exposes a dire gap for more studies on clinical efficacy and toxicity, the following emerging trend was noted: basic research on plants for oral health is mainly done in Brazil, Europe and Australia. Brazil, China, India and New Zealand generally conduct value addition of natural products for fortification of toothpastes. African countries focus on bioprospecting and primary production of raw plants and other natural products with antimicrobial efficacies. The Middle East and Egypt predominantly research on plants used as chewing sticks. More research and funding are needed in the field of natural products for oral health, especially in Africa where oral diseases are fuelled by human immunodeficiency virus/acquired immunodeficiency syndrome (HIV/AIDS).
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Ibrar M, Rauf A, Ben Hadda T, Mubarak MS, Patel S. Quantitative ethnobotanical survey of medicinal flora thriving in Malakand Pass Hills, Khyber Pakhtunkhwa, Pakistan. JOURNAL OF ETHNOPHARMACOLOGY 2015; 169:335-346. [PMID: 25952168 DOI: 10.1016/j.jep.2015.04.052] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Revised: 04/22/2015] [Accepted: 04/25/2015] [Indexed: 06/04/2023]
Abstract
STUDY OBJECTIVE Ethnobotanical knowledge is proving to be invaluable for drug discovery in the wake of effective prospecting from biodiversity. On the other hand, the escalating human pressure is threatening the endogenous flora. Situated at the foothill of the Himalayas, Pakistan boasts of rich floristic distribution. However, many lush yet imperiled regions of this country has never been explored. It inspired us to evaluate and document the taxonomic composition, significance of medicinal plants and associated traditional knowledge in the District of Malakand, Khyber Pakhtunkhwa Province. MATERIALS AND METHODS Vegetation growing in Malakand pass hills, Pakistan was studied and data were collected using an open-ended questionnaire, in addition to interviewing the local elderly, knowledgeable persons, and herbal practitioners. Relative Frequency Citation (RFC) and Use Value (UV) of the medicinal plants were calculated and their correlation was determined by Pearson correlation coefficient. RESULTS This study encompasses 92 plant species belonging to 56 families thriving in the study area. The information gathered includes ethnobotanical inventory and their pharmacological uses. Quantitative analysis throws light on the consistence of RFC and UV. Asteraceae and Lamiaceae were the most abundant families represented by 6 species each. Shoots were the most used parts (23.6%) and wound healing (7.91%) was the most common therapeutic use. CONCLUSION The result obtained from the study implies that local inhabitants rely on these plants for their medicinal requirements. Also, the statistics reveal that, the vegetation can be assessed for potential drug leads. However, urban expansion is threatening the existence of indigenous flora and old generation with ancient herbal wisdom is perishing. So, it appears imperative to preserve the traditional knowledge. This survey is expected to contribute to the discovery of novel bioactive constituents, stimulate conservation efforts of the perturbed flora and promote sustainable exploitation of the medicinal bounty.
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Affiliation(s)
- Muhammad Ibrar
- Department of Botany, University of Peshawar, Peshawar 25120, Pakistan
| | - Abdur Rauf
- Institute of Chemical Sciences, University of Peshawar, Peshawar 25120, Pakistan.
| | - Taibi Ben Hadda
- Laboratoire Chimie Matériaux, FSO, Université Mohammed Ier, Oujda 60000, Morocco
| | | | - Seema Patel
- Bioinformatics and Medical Informatics Research Center, San Diego State University, San Diego 92182, USA.
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Singh BN, Prateeksha P, Pandey G, Jadaun V, Singh S, Bajpai R, Nayaka S, Naqvi AH, Singh Rawat AK, Upreti DK, Singh BR. Development and characterization of a novel Swarna-based herbo-metallic colloidal nano-formulation – inhibitor of Streptococcus mutans quorum sensing. RSC Adv 2015. [DOI: 10.1039/c4ra11939h] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Herbo-metallic preparations such as bhasmas (ash) are used traditionally in Indian and Chinese medicinal systems.
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Dodonaea viscosa var. angustifolia Inhibits Germ Tube and Biofilm Formation by C. albicans. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:261978. [PMID: 24223612 PMCID: PMC3809598 DOI: 10.1155/2013/261978] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Accepted: 09/05/2013] [Indexed: 11/30/2022]
Abstract
The virulence factors of Candida albicans are germ tube and biofilm formation, adherence to host tissues, and production of hydrolytic enzymes. This study investigated the effect of Dodonaea viscosa var. angustifolia extract on the germ tube and biofilm formation of C. albicans. Serum containing the three subinhibitory concentrations of leaf extract was inoculated with C. albicans, incubated, and viewed under a light microscope. Number of cells with germ tube was recorded and the results were analysed using Scheffe test for pairwise comparison. Biofilms were grown on coverslips in the presence of plant extracts and processed for scanning electron microscopy (SEM). Planktonic cells were grown in the presence of plant extract for 6 h and processed for electron microscopy (TEM).
The crude plant extract significantly (P < 0.01) reduced the germ tube formation of C. albicans at 3.125 (85.36%), 1.56 (61.91%), and 0.78 mg/mL (26.27%) showing a concentration dependent effect. SEM results showed concentration dependent reduction in biofilm and hyphae formation. TEM results showed that the plant extract caused damage to the cell wall and cell membrane. DVA extract has ability to reduce virulence of C. albicans by inhibiting germ tube and biofilm formation through damage to the cell wall. Therefore, it has therapeutic potential.
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Inhibitory Effect of Dodonaea viscosa var. angustifolia on the Virulence Properties of the Oral Pathogens Streptococcus mutans and Porphyromonas gingivalis. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2013; 2013:624089. [PMID: 24223061 PMCID: PMC3816046 DOI: 10.1155/2013/624089] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Revised: 09/06/2013] [Accepted: 09/11/2013] [Indexed: 11/17/2022]
Abstract
Aim. This study investigated the effect of Dodonaea viscosa var. angustifolia (DVA) on the virulence properties of cariogenic Streptococcus mutans and Porphyromonas gingivalis implicated in periodontal diseases. Methods. S. mutans was cultured in tryptone broth containing a crude leaf extract of DVA for 16 hours, and the pH was measured after 10, 12, 14, and 16 h. Biofilms of S. mutans were grown on glass slides for 48 hours and exposed to plant extract for 30 minutes; the adherent cells were reincubated and the pH was measured at various time intervals. Minimum bactericidal concentration of the extracts against the four periodontal pathogens was determined. The effect of the subinhibitory concentration of plant extract on the production of proteinases by P. gingivalis was also evaluated. Results. DVA had no effect on acid production by S. mutans biofilms; however, it significantly inhibited acid production in planktonic cells. Periodontal pathogens were completely eliminated at low concentrations ranging from 0.09 to 0.02 mg/mL of crude plant extracts. At subinhibitory concentrations, DVA significantly reduced Arg-gingipain (24%) and Lys-gingipain (53%) production by P. gingivalis (P ≤ 0.01). Conclusions. These results suggest that DVA has the potential to be used to control oral infections including dental caries and periodontal diseases.
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