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Wang XJ, Qiao Y, Jiang ZR, He JL, Wang BY, Wan JR, Ji J, Liu B. Design, synthesis, and evaluation of benzodioxolane compounds for antitumor activity. Bioorg Med Chem Lett 2024; 111:129890. [PMID: 39004317 DOI: 10.1016/j.bmcl.2024.129890] [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: 06/07/2024] [Revised: 07/08/2024] [Accepted: 07/11/2024] [Indexed: 07/16/2024]
Abstract
This study reports the design, synthesis, and comprehensive biological evaluation of 13 benzodioxolane derivatives, derived from the core structure of piperine, a natural product with established antitumor properties. Piperine, primarily found in black pepper, has been noted for its diverse pharmacological activities, including anti-inflammatory, antioxidant, and anticancer effects. Leveraging piperine's antitumor potential, we aimed to enhance its efficacy through structural modifications. Among the synthesized compounds, HJ1 emerged as the most potent, exhibiting a 4-fold and 10-fold increase in inhibitory effects on HeLa and MDA-MB-231 cell lines, respectively, compared to piperine. Furthermore, HJ1 demonstrated a favorable safety profile, characterized by significantly lower cytotoxicity towards the human normal cell line 293T. Mechanistic investigations revealed that HJ1 markedly inhibited clonogenicity, migration, and adhesion of HeLa cells. In vivo studies utilizing the chick embryo chorioallantoic membrane (CAM) model substantiated the robust antitumor activity of HJ1, evidenced by its ability to suppress tumor angiogenesis and reduce tumor weight. These results suggest that HJ1 holds significant promise as a lead compound for the development of novel antitumor therapies.
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Affiliation(s)
- Xiu-Jun Wang
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China.
| | - Yue Qiao
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China
| | - Zi-Rui Jiang
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China
| | - Jing-Liang He
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China
| | - Bing-Yan Wang
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China
| | - Jia-Rui Wan
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China
| | - Jing Ji
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China.
| | - Bin Liu
- College of Pharmacy, Jiangsu Ocean University, Lianyungang 222000, China.
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Abass S, Parveen R, Irfan M, Malik Z, Husain SA, Ahmad S. Mechanism of antibacterial phytoconstituents: an updated review. Arch Microbiol 2024; 206:325. [PMID: 38913205 DOI: 10.1007/s00203-024-04035-y] [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: 04/25/2024] [Accepted: 06/05/2024] [Indexed: 06/25/2024]
Abstract
The increase of multiple drug resistance bacteria significantly diminishes the effectiveness of antibiotic armory and subsequently exaggerates the level of therapeutic failure. Phytoconstituents are exceptional substitutes for resistance-modifying vehicles. The plants appear to be a deep well for the discovery of novel antibacterial compounds. This is owing to the numerous enticing characteristics of plants, they are easily accessible and inexpensive, extracts or chemicals derived from plants typically have significant levels of action against infections, and they rarely cause serious adverse effects. The enormous selection of phytochemicals offers very distinct chemical structures that may provide both novel mechanisms of antimicrobial activity and deliver us with different targets in the interior of the bacterial cell. They can directly affect bacteria or act together with the crucial events of pathogenicity, in this manner decreasing the aptitude of bacteria to create resistance. Abundant phytoconstituents demonstrate various mechanisms of action toward multi drug resistance bacteria. Overall, this comprehensive review will provide insights into the potential of phytoconstituents as alternative treatments for bacterial infections, particularly those caused by multi drug resistance strains. By examining the current state of research in this area, the review will shed light on potential future directions for the development of new antimicrobial therapies.
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Affiliation(s)
- Sageer Abass
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, 110025, India
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Rabea Parveen
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Mohammad Irfan
- Department of Biotechnology, Jamia Millia Islamia, New Delhi, 110025, India
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Zoya Malik
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India
| | - Syed Akhtar Husain
- Department of Biosciences, Jamia Millia Islamia, New Delhi, 110025, India
| | - Sayeed Ahmad
- Centre of Excellence in Unani Medicine (Pharmacognosy and Pharmacology), Bioactive Natural Product Laboratory, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, 110062, India.
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Vadakkan K, Sathishkumar K, Kuttiyachan Urumbil S, Ponnenkunnathu Govindankutty S, Kumar Ngangbam A, Devi Nongmaithem B. A review of chemical signaling mechanisms underlying quorum sensing and its inhibition in Staphylococcus aureus. Bioorg Chem 2024; 148:107465. [PMID: 38761705 DOI: 10.1016/j.bioorg.2024.107465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/29/2024] [Accepted: 05/14/2024] [Indexed: 05/20/2024]
Abstract
Staphylococcus aureus is a significant bacterium responsible for multiple infections and is a primary cause of fatalities among patients in hospital environments. The advent of pathogenic bacteria such as methicillin-resistant S. aureus revealed the shortcomings of employing antibiotics to treat bacterial infectious diseases. Quorum sensing enhances S. aureus's survivability through signaling processes. Targeting the key components of quorum sensing has drawn much interest nowadays as a promising strategy for combating infections caused by bacteria. Concentrating on the accessory gene regulator quorum-sensing mechanism is the most commonly suggested anti-virulence approach for S.aureus. Quorum quenching is a common strategy for controlling illnesses triggered by microorganisms since it reduces the pathogenicity of bacteria and improves bacterial biofilm susceptibility to antibiotics, thus providing an intriguing prospect for drug discovery. Quorum sensing inhibition reduces selective stresses and constrains the emergence of antibiotic resistance while limiting bacterial pathogenicity. This review examines the quorum sensing mechanisms involved in S. aureus, quorum sensing targets and gene regulation, environmental factors affecting quorum sensing, quorum sensing inhibition, natural products as quorum sensing inhibitory agents and novel therapeutical strategies to target quorum sensing in S. aureus as drug developing technique to augment conventional antibiotic approaches.
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Affiliation(s)
- Kayeen Vadakkan
- Department of Biotechnology, St. Mary's College (Autonomous), Thrissur, Kerala 680020, India; Manipur International University, Imphal, Manipur 795140, India.
| | - Kuppusamy Sathishkumar
- Center for Global Health Research, Saveetha Medical College and Hospitals, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Thandalam, Chennai, Tamil Nadu 602105, India
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Zhang JX, Luo WM, Wang BW, Li RT, Zhang Q, Zhang XY, Fang ZZ, Zhang ZP. The association between plasma free amino acids and type 2 diabetes mellitus complicated with infection in Chinese patients. Diabetol Metab Syndr 2024; 16:9. [PMID: 38191455 PMCID: PMC10775586 DOI: 10.1186/s13098-023-01203-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 11/01/2023] [Indexed: 01/10/2024] Open
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM), one of the most common public diseases threatening human health, is always accompanied by infection. Though there are still a variety of flaws in the treatment of some infectious diseases, metabolomics provides a fresh perspective to explore the relationship between T2DM and infection. Our research aimed to investigate the association between plasma free amino acids (PFAAs) and T2DM complicated with infection in Chinese patients. METHODS A cross-sectional study was conducted from May 2015 to August 2016. We retrieved the medical records of 1032 inpatients with T2DM from Liaoning Medical University First Affiliated Hospital and we used mass spectrometry to quantify 23 PFAAs. Infections contained 15 individual categories that could be retrieved from the database. Principal component analysis was used to extract factors of PFAAs. Multi-variable binary logistic regression was used to obtain odds ratios (OR) and their 95% confidence intervals (CI). RESULTS Among 1032 inpatients,109 (10.6%) had infectious diseases. Six factors, accounting for 68.6% of the total variance, were extracted. Factor 4 consisted of Glu, Asp and Orn. Factor 5 consisted of Hcy and Pip. After adjusting for potential confounders, factor 4 was positively correlated with T2DM complicated with infection in Chinese T2DM patients (OR: 1.27, 95%CI: 1.06-1.52). Individual Hcy in factor 5 was positively associated with T2DM complicated with infection (OR: 1.33, 95%CI: 1.08-1.64). Furthermore, factor 4 (OR: 1.44, 95%CI: 1.11-1.87), Orn (OR: 1.01, 95%CI: 1.00-1.02) and Hcy (OR: 1.56, 95%CI: 1.14-3.14) were positively associated with bacterial infection in Chinese T2DM patients, while factor 5 (OR: 0.71, 95%CI: 0.50-1.00) was negatively associated with bacterial infection. CONCLUSIONS Urea cycle-related metabolites (Orn, Asp, Glu) and Hcy were positively associated with T2DM complicated with infection in China. Orn and Hcy were positively associated with bacterial infection in T2DM patients in China.
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Affiliation(s)
- Jing-Xi Zhang
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Tianjin Medical University, No.22, Xinxing Street, Heping District, Tianjin, 300041, China
| | - Wei-Ming Luo
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, No.22, Xinxing Street, Heping District, Tianjin, 300041, China
| | - Bo-Wen Wang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, No.22, Xinxing Street, Heping District, Tianjin, 300041, China
| | - Ru-Tao Li
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Tianjin Medical University, No.22, Xinxing Street, Heping District, Tianjin, 300041, China
| | - Qian Zhang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, No.22, Xinxing Street, Heping District, Tianjin, 300041, China
| | - Xiang-Yu Zhang
- Department of Pediatric Dentistry, School and Hospital of Stomatology, Tianjin Medical University, No.22, Xinxing Street, Heping District, Tianjin, 300041, China.
| | - Zhong-Ze Fang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, No.22, Xinxing Street, Heping District, Tianjin, 300041, China.
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, 300041, China.
| | - Zhi-Peng Zhang
- General Surgery of Peking University Third Hospital, Beijing, China
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Malczak I, Gajda A. Interactions of naturally occurring compounds with antimicrobials. J Pharm Anal 2023; 13:1452-1470. [PMID: 38223447 PMCID: PMC10785267 DOI: 10.1016/j.jpha.2023.09.014] [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] [Received: 06/23/2023] [Revised: 09/12/2023] [Accepted: 09/19/2023] [Indexed: 01/16/2024] Open
Abstract
Antibiotics are among the most often used medications in human healthcare and agriculture. Overusing these substances can lead to complications such as increasing antibiotic resistance in bacteria or a toxic effect when administering large amounts. To solve these problems, new solutions in antibacterial therapy are needed. The use of natural products in medicine has been known for centuries. Some of them have antibacterial activity, hence the idea to combine their activity with commercial antibiotics to reduce the latter's use. This review presents collected information on natural compounds (terpenes, alkaloids, flavonoids, tannins, sulfoxides, and mycotoxins), of which various drug interactions have been observed. Many of the indicated compounds show synergistic or additive interactions with antibiotics, which suggests their potential for use in antibacterial therapy, reducing the toxicity of the antibiotics used and the risk of further development of bacterial resistance. Unfortunately, there are also compounds which interact antagonistically, potentially hindering the therapy of bacterial infection. Depending on its mechanism of action, each compound can behave differently in combination with different antibiotics and when acting against various bacterial strains.
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Affiliation(s)
- Izabela Malczak
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Partyzantów 57, 24-100, Poland
| | - Anna Gajda
- Department of Pharmacology and Toxicology, National Veterinary Research Institute, Partyzantów 57, 24-100, Poland
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Belloumi D, Calvet S, Roca MI, Ferrer P, Jiménez-Belenguer A, Cambra-López M, García-Rebollar P, Climent E, Martínez-Blanch J, Tortajada M, Chenoll E, Bermejo A, Cerisuelo A. Effect of providing citrus pulp-integrated diet on fecal microbiota and serum and fecal metabolome shifts in crossbred pigs. Sci Rep 2023; 13:17596. [PMID: 37845279 PMCID: PMC10579234 DOI: 10.1038/s41598-023-44741-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Accepted: 10/11/2023] [Indexed: 10/18/2023] Open
Abstract
The study aimed to assess the impact of dehydrated citrus pulp (DCP) on growth performance, fecal characteristics, fecal bacterial composition (based on 16S rRNA analysis), and fecal and serum metabolomic profiles in crossbred pigs. 80 finishing pigs Duroc × (Landrace × Large White) were fed either a control diet (C) or a diet with 240 g/kg DCP (T) for six weeks. Including DCP in diets tended to decrease feed intake, increased (p < 0.05) the concentrations of acetic and heptanoic acids and decreased (p < 0.05) fecal butyric and branched-chain fatty acid concentrations in feces. Animals fed DCP exhibited a lower abundance of the genera Clostridium and Romboutsia, while Lachnospira significantly increased. Orthogonal partial least squares discriminant analysis plotted a clear separation of fecal and serum metabolites between groups. The main discriminant fecal metabolites were associated with bacterial protein fermentation and were downregulated in T-fed pigs. In serum, DCP supplementation upregulated metabolites related to protein and fatty acids metabolism. In conclusion, the addition of DCP as an environmentally friendly source of nutrients in pig diets, resulted in modifications of fecal bacterial composition, fermentation patterns, and overall pig metabolism, suggesting improvements in protein metabolism and gut health.
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Affiliation(s)
- Dhekra Belloumi
- Centro de Investigación y Tecnología Animal, Instituto Valenciano de Investigaciones Agrarias, 12400, Segorbe, Spain
- Institute of Animal Science and Technology, Universitat Politècnica de València, 46022, Valencia, Spain
| | - Salvador Calvet
- Institute of Animal Science and Technology, Universitat Politècnica de València, 46022, Valencia, Spain
| | - Marta Isabel Roca
- Unidad Analítica, Instituto de Investigación Sanitaria La Fe, 46026, Valencia, Spain
| | - Pablo Ferrer
- Centro de Investigación y Tecnología Animal, Instituto Valenciano de Investigaciones Agrarias, 12400, Segorbe, Spain
| | - Ana Jiménez-Belenguer
- Departamento de Biotecnología, Universitat Politècnica de València, 46022, Valencia, Spain
| | - María Cambra-López
- Institute of Animal Science and Technology, Universitat Politècnica de València, 46022, Valencia, Spain
| | - Paloma García-Rebollar
- Departamento de Producción Agraria, ETSIAAB, Universidad Politécnica de Madrid, 28040, Madrid, Spain
| | | | | | | | | | - Almudena Bermejo
- Centro de Citricultura y Producción Vegetal, Instituto Valenciano de Investigaciones Agrarias, 46113, Moncada, Spain
| | - Alba Cerisuelo
- Centro de Investigación y Tecnología Animal, Instituto Valenciano de Investigaciones Agrarias, 12400, Segorbe, Spain.
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Kosaristanova L, Rihacek M, Sucha F, Milosavljevic V, Svec P, Dorazilova J, Vojtova L, Antal P, Kopel P, Patocka Z, Adam V, Zurek L, Dolezelikova K. Synergistic antibacterial action of the iron complex and ampicillin against Staphylococcus aureus. BMC Microbiol 2023; 23:288. [PMID: 37803300 PMCID: PMC10559456 DOI: 10.1186/s12866-023-03034-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Accepted: 09/28/2023] [Indexed: 10/08/2023] Open
Abstract
OBJECTIVES Resistance to antibiotics among bacteria of clinical importance, including Staphylococcus aureus, is a serious problem worldwide and the search for alternatives is needed. Some metal complexes have antibacterial properties and when combined with antibiotics, they may increase bacterial sensitivity to antimicrobials. In this study, we synthesized the iron complex and tested it in combination with ampicillin (Fe16 + AMP) against S. aureus. METHODS An iron complex (Fe16) was synthesized and characterized using spectroscopy methods. Confirmation of the synergistic effect between the iron complex (Fe16) and ampicillin (AMP) was performed using ζ-potential, infrared spectra and FICI index calculated from the minimum inhibitory concentration (MIC) from the checkerboard assay. Cytotoxic properties of combination Fe16 + AMP was evaluated on eukaryotic cell line. Impact of combination Fe16 + AMP on chosen genes of S. aureus were performed by Quantitative Real-Time PCR. RESULTS The MIC of Fe16 + AMP was significantly lower than that of AMP and Fe16 alone. Furthermore, the infrared spectroscopy revealed the change in the ζ-potential of Fe16 + AMP. We demonstrated the ability of Fe16 + AMP to disrupt the bacterial membrane of S. aureus and that likely allowed for better absorption of AMP. In addition, the change in gene expression of bacterial efflux pumps at the sub-inhibitory concentration of AMP suggests an insufficient import of iron into the bacterial cell. At the same time, Fe16 + AMP did not have any cytotoxic effects on keratinocytes. CONCLUSIONS Combined Fe16 + AMP therapy demonstrated significant synergistic and antimicrobial effects against S. aureus. This study supports the potential of combination therapy and further research.
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Affiliation(s)
- Ludmila Kosaristanova
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Martin Rihacek
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Frantiska Sucha
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Vedran Milosavljevic
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Pavel Svec
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Jana Dorazilova
- Central European Institute of Technology, University of Technology, Brno, Czech Republic
| | - Lucy Vojtova
- Central European Institute of Technology, University of Technology, Brno, Czech Republic
| | - Peter Antal
- Department of Inorganic Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Pavel Kopel
- Department of Inorganic Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Zdenek Patocka
- Department of Forest Management and Applied Geoinformatics, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Ludek Zurek
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic
| | - Kristyna Dolezelikova
- Department of Chemistry and Biochemistry, Faculty of AgriSciences, Mendel University in Brno, Brno, Czech Republic.
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Woo S, Marquez L, Crandall WJ, Risener CJ, Quave CL. Recent advances in the discovery of plant-derived antimicrobial natural products to combat antimicrobial resistant pathogens: insights from 2018-2022. Nat Prod Rep 2023; 40:1271-1290. [PMID: 37439502 PMCID: PMC10472255 DOI: 10.1039/d2np00090c] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/14/2023]
Abstract
Covering: 2018 to 2022Antimicrobial resistance (AMR) poses a significant global health threat. There is a rising demand for innovative drug scaffolds and new targets to combat multidrug-resistant bacteria. Before the advent of antibiotics, infections were treated with plants chosen from traditional medicine practices. Of Earth's 374 000 plant species, approximately 9% have been used medicinally, but most species remain to be investigated. This review illuminates discoveries of antimicrobial natural products from plants covering 2018 to 2022. It highlights plant-derived natural products with antibacterial, antivirulence, and antibiofilm activity documented in lab studies. Additionally, this review examines the development of novel derivatives from well-studied parent natural products, as natural product derivatives have often served as scaffolds for anti-infective agents.
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Affiliation(s)
- Sunmin Woo
- Center for the Study of Human Health, Emory University, USA
| | - Lewis Marquez
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - William J Crandall
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - Caitlin J Risener
- Molecular and Systems Pharmacology Program, Laney Graduate School, Emory University, USA
| | - Cassandra L Quave
- Center for the Study of Human Health, Emory University, USA
- Department of Dermatology, Emory University School of Medicine, USA.
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Haghshenas B, Kiani A, Mansoori S, Mohammadi-Noori E, Nami Y. Probiotic properties and antimicrobial evaluation of silymarin-enriched Lactobacillus bacteria isolated from traditional curd. Sci Rep 2023; 13:10916. [PMID: 37407617 DOI: 10.1038/s41598-023-37350-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Accepted: 06/20/2023] [Indexed: 07/07/2023] Open
Abstract
Nowadays, the increasing use of medicinal plants in the treatment and prevention of diseases has attracted the attention of researchers. The aim of this work was to investigate the probiotic properties and antibacterial and antifungal activity of silymarin-enriched Lactobacillus bacteria against several important pathogenic bacteria and also Aspergillus flavus as one of the harmful molds in the food and health industries. For this purpose, 52 g-positive and catalase-negative bacteria were isolated from 60 traditional curd samples from Ilam province. Five of the 52 bacterial strains had more than 90% viability in high bile salt and acidic conditions and were selected for further investigation. The five strains with positive results showed good hydrophobicity (≥ 50.30%), auto-aggregation (≥ 53.70%), coaggregation (≥ 28.20%), and high cholesterol removal ability (from 09.20 to 67.20%) and therefore can be considered potential probiotics. The tested strains displayed acceptable antibacterial and antifungal activity against all 12 pathogenic bacteria and A. flavus. Also, the results of the simultaneous antifungal activity of probiotic strains and silymarin showed that the combination of silymarin and probiotics has a significantly better (P < 0.05) antifungal effect than the control group or the probiotic groups alone. Interestingly, in addition to the Limosilactobacillus fermentum C3 strain, the Limosilactobacillus fermentum C18 and Lactiplantibacillus pentosus C20 strains also had significant inhibitory effects against A. flavus when used with silymarin extract in methanol. Meanwhile, silymarin extract in DMSO and PEG increased the antagonistic activity of all five potential probiotic strains.
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Affiliation(s)
- Babak Haghshenas
- Regenerative Medicine Research Center (RMRC), Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Amir Kiani
- Regenerative Medicine Research Center (RMRC), Health Technology Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran.
| | - Saeideh Mansoori
- Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Ehsan Mohammadi-Noori
- Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Yousef Nami
- Department of Food Biotechnology, Branch for Northwest and West Region, Agricultural Biotechnology Research Institute of Iran, Agricultural Research, Education and Extension Organization (AREEO), Tabriz, Iran.
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Immune System and Epidemics: The Role of African Indigenous Bioactive Substances. Nutrients 2023; 15:nu15020273. [PMID: 36678143 PMCID: PMC9864875 DOI: 10.3390/nu15020273] [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] [Received: 12/10/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/06/2023] Open
Abstract
With over 6 million coronavirus pandemic deaths, the African continent reported the lowest death rate despite having a high disease burden. The African community's resilience to the pandemic has been attributed to climate and weather conditions, herd immunity, repeated exposure to infectious organisms that help stimulate the immune system, and a disproportionately large youth population. In addition, functional foods, herbal remedies, and dietary supplements contain micronutrients and bioactive compounds that can help boost the immune system. This review identified significant traditional fermented foods and herbal remedies available within the African continent with the potential to boost the immune system in epidemics and pandemics. Methodology: Databases, such as PubMed, the Web of Science, and Scopus, were searched using relevant search terms to identify traditional African fermented foods and medicinal plants with immune-boosting or antiviral capabilities. Cereal-based fermented foods, meat-, and fish-based fermented foods, and dairy-based fermented foods containing antioxidants, immunomodulatory effects, probiotics, vitamins, and peptides were identified and discussed. In addition, nine herbal remedies and spices belonging to eight plant families have antioxidant, immunomodulatory, anti-inflammatory, neuroprotective, hepatoprotective, cardioprotective, and antiviral properties. Peptides, flavonoids, alkaloids, sterols, ascorbic acid, minerals, vitamins, and saponins are some of the bioactive compounds in the remedies. Bioactive compounds in food and plants significantly support the immune system and help increase resistance against infectious diseases. The variety of food and medicinal plants found on the African continent could play an essential role in providing community resilience against infectious diseases during epidemics and pandemics. The African continent should investigate nutritional, herbal, and environmental factors that support healthy living and longevity.
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Premanath R, James JP, Karunasagar I, Vaňková E, Scholtz V. Tropical plant products as biopreservatives and their application in food safety. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Sulaiman M, Jannat K, Nissapatorn V, Rahmatullah M, Paul AK, de Lourdes Pereira M, Rajagopal M, Suleiman M, Butler MS, Break MKB, Weber JF, Wilairatana P, Wiart C. Antibacterial and Antifungal Alkaloids from Asian Angiosperms: Distribution, Mechanisms of Action, Structure-Activity, and Clinical Potentials. Antibiotics (Basel) 2022; 11:antibiotics11091146. [PMID: 36139926 PMCID: PMC9495154 DOI: 10.3390/antibiotics11091146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/06/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
The emergence of multidrug-resistant bacteria and fungi requires the development of antibiotics and antifungal agents. This review identified natural products isolated from Asian angiosperms with antibacterial and/or antifungal activities and analyzed their distribution, molecular weights, solubility, and modes of action. All data in this review were compiled from Google Scholar, PubMed, Science Direct, Web of Science, ChemSpider, PubChem, and a library search from 1979 to 2022. One hundred and forty-one antibacterial and/or antifungal alkaloids were identified during this period, mainly from basal angiosperms. The most active alkaloids are mainly planar, amphiphilic, with a molecular mass between 200 and 400 g/mol, and a polar surface area of about 50 Å2, and target DNA and/or topoisomerase as well as the cytoplasmic membrane. 8-Acetylnorchelerythrine, cryptolepine, 8-hydroxydihydrochelerythrine, 6-methoxydihydrosanguinarine, 2′-nortiliacorinine, pendulamine A and B, rhetsisine, sampangine, tiliacorine, tryptanthrin, tylophorinine, vallesamine, and viroallosecurinine yielded MIC ≤ 1 µg/mL and are candidates for the development of lead molecules.
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Affiliation(s)
- Mazdida Sulaiman
- Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Khoshnur Jannat
- Department of Biotechnology & Genetic Engineering, University of Development Alternative, Dhaka 1207, Bangladesh
| | - Veeranoot Nissapatorn
- School of Allied Health Sciences and World Union for Herbal Drug Discovery (WUHeDD), Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Mohammed Rahmatullah
- Department of Biotechnology & Genetic Engineering, University of Development Alternative, Dhaka 1207, Bangladesh
| | - Alok K. Paul
- School of Pharmacy and Pharmacology, University of Tasmania, Hobart, TAS 7001, Australia
| | - Maria de Lourdes Pereira
- CICECO-Aveiro Institute of Materials & Department of Medical Sciences, University of Aveiro, 3810-193 Aveiro, Portugal
| | - Mogana Rajagopal
- Faculty of Pharmaceutical Sciences, UCSI University, Kuala Lumpur 56000, Malaysia
| | - Monica Suleiman
- Institute for Tropical Biology & Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
| | | | - Mohammed Khaled Bin Break
- Department of Pharmaceutical Chemistry, College of Pharmacy, University of Hail, Hail 81411, Saudi Arabia
| | - Jean-Frédéric Weber
- UFR Sciences Pharmaceutiques, INRAE, Bordeaux INP, UR ŒNOLOGIE, EA 4577, USC 1366, ISVV, Université de Bordeaux, 210 Chemin de Leysotte, 33882 Villenave d’Ornon, France
| | - Polrat Wilairatana
- Department of Clinical Tropical Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok 10400, Thailand
| | - Christophe Wiart
- Institute for Tropical Biology & Conservation, Universiti Malaysia Sabah, Kota Kinabalu 88400, Malaysia
- Correspondence:
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13
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Acharjee M, Hasan F, Islam T, Nur IT, Begum N, Mazumder C, Lubna MA, Zerin N, Shahriar A, Mahmud MR. Screening of in-vitro antibacterial activity of commercially available probiotics on food-borne pathogens along with their synergistic effects with synthetic drugs. Metabol Open 2022; 14:100187. [PMID: 35651884 PMCID: PMC9149184 DOI: 10.1016/j.metop.2022.100187] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/04/2022] [Accepted: 05/04/2022] [Indexed: 11/19/2022] Open
Abstract
Background Probiotics are put forward as food to ensure the maintenance of the equilibrium of the intestinal flora. Prolonged usage of probiotics in food ingredients for human as well as in animal feed has not exposed any side effects yet. Present study attempted to justify the effects of some commercially available probiotics (Good-gut, Lubenna, Probio and Protein restro) and commonly used antibiotics (Streptomycin, Gentamycin, Ampicillin, Methicillin, Azithromycin, Erythromycin, Ceftrizone, Imepenem, Ciprofloxacin and Tetracycline) on the bacteria which were previously isolated from food samples. Methods The anti-bacterial potential of the probiotics was aimed to be checked through the agar well diffusion method and the antibiogram of the synthetic drugs was determined by disc-diffusion method (Kirby Bauer technique). The minimum inhibitory concentration (MIC) of the probiotics were examined through broth micro dilution assay. Results Almost all the probiotic samples exhibited antibacterial activity against the tested bacteria within the range of 10 mm–30 mm except Bacillus spp. and Salmonella spp. The lowest MIC values 3 mg/ml was determined with Luvena for Pseudomonas spp. and Shigella spp. while the maximum MIC 20 mg/ml was recorded for Good gut and Probio against Salmonella spp. and E. coli. Meanwhile, majority of the tested pathogens were detected to be resistant against more than one antibiotic as MDR strains except gentamycin, streptomycin and azithromycin. During the combination method, the zone diameter increased remarkably with a clear indication of synergistic effects compared to their individual activity. Conclusion This study substantiated that the deployment of a combination of two antibacterial medications in order to combat the multi-drug resistant bacteria would rather be efficacious than the application of either antimicrobial agent alone.
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Affiliation(s)
- Mrityunjoy Acharjee
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
- Corresponding author. Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh.
| | - Fhamida Hasan
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Tamanna Islam
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Ifra Tun Nur
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Nila Begum
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Chayanika Mazumder
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Mahabuba Akter Lubna
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Nagma Zerin
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Asif Shahriar
- Department of Microbiology, Stamford University Bangladesh, 51 Siddeswari Road, Dhaka, 1217, Bangladesh
| | - Md Rayhan Mahmud
- Department of Microbiology, Jagannath University, Dhaka, 1100, Bangladesh
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14
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Synthesis and Characterization of Piperine Amide analogues: Their In-silico and invitro analysis as Potential antibacterial agents. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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15
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Cobalt Bis-Dicarbollide Enhances Antibiotics Action towards Staphylococcus epidermidis Planktonic Growth Due to Cell Envelopes Disruption. Pharmaceuticals (Basel) 2022; 15:ph15050534. [PMID: 35631360 PMCID: PMC9147877 DOI: 10.3390/ph15050534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 04/19/2022] [Accepted: 04/22/2022] [Indexed: 02/01/2023] Open
Abstract
The emergence of antibiotic resistance in opportunistic pathogens represents a huge problem, the solution for which may be a treatment with a combination of multiple antimicrobial agents. Sodium salt of cobalt bis-dicarbollide (COSAN.Na) is one of the very stable, low-toxic, amphiphilic boron-rich sandwich complex heteroboranes. This compound has a wide range of potential applications in the biological sciences due to its antitumor, anti-HIV-1, antimicrobial and antibiofilm activity. Our study confirmed the ability of COSAN.Na (in the concentration range 0.2–2.48 µg/mL) to enhance tetracycline, erythromycin, and vancomycin action towards Staphylococcus epidermidis planktonic growth with an additive or synergistic effect (e.g., the combination of 1.24 µg/mL COSAN.Na and 6.5 µg/mL TET). The effective inhibitory concentration of antibiotics was reduced up to tenfold most efficiently in the case of tetracycline (from 65 to 6.5 µg/mL). In addition, strong effect of COSAN.Na on disruption of the cell envelopes was determined using propidium iodide uptake measurement and further confirmed by transmission electron microscopy. The combination of amphiphilic COSAN.Na with antibiotics can therefore be considered a promising way to overcome antibiotic resistance in Gram-positive cocci.
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16
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Tollis S, Rizzotto A, Pham NT, Koivukoski S, Sivakumar A, Shave S, Wildenhain J, Zuleger N, Keys JT, Culley J, Zheng Y, Lammerding J, Carragher NO, Brunton VG, Latonen L, Auer M, Tyers M, Schirmer EC. Chemical Interrogation of Nuclear Size Identifies Compounds with Cancer Cell Line-Specific Effects on Migration and Invasion. ACS Chem Biol 2022; 17:680-700. [PMID: 35199530 PMCID: PMC8938924 DOI: 10.1021/acschembio.2c00004] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
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Background: Lower survival rates for many cancer
types correlate with changes in nuclear size/scaling in a tumor-type/tissue-specific
manner. Hypothesizing that such changes might confer an advantage
to tumor cells, we aimed at the identification of commercially available
compounds to guide further mechanistic studies. We therefore screened
for Food and Drug Administration (FDA)/European Medicines Agency (EMA)-approved
compounds that reverse the direction of characteristic tumor nuclear
size changes in PC3, HCT116, and H1299 cell lines reflecting, respectively,
prostate adenocarcinoma, colonic adenocarcinoma, and small-cell squamous
lung cancer. Results: We found distinct, largely
nonoverlapping sets of compounds that rectify nuclear size changes
for each tumor cell line. Several classes of compounds including,
e.g., serotonin uptake inhibitors, cyclo-oxygenase inhibitors, β-adrenergic
receptor agonists, and Na+/K+ ATPase inhibitors,
displayed coherent nuclear size phenotypes focused on a particular
cell line or across cell lines and treatment conditions. Several compounds
from classes far afield from current chemotherapy regimens were also
identified. Seven nuclear size-rectifying compounds selected for further
investigation all inhibited cell migration and/or invasion. Conclusions: Our study provides (a) proof of concept that
nuclear size might be a valuable target to reduce cell migration/invasion
in cancer treatment and (b) the most thorough collection of tool compounds
to date reversing nuclear size changes specific to individual cancer-type
cell lines. Although these compounds still need to be tested in primary
cancer cells, the cell line-specific nuclear size and migration/invasion
responses to particular drug classes suggest that cancer type-specific
nuclear size rectifiers may help reduce metastatic spread.
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Affiliation(s)
- Sylvain Tollis
- Institute of Biomedicine, University of Eastern Finland, Kuopio 70210, Finland
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Québec H3T 1J4, Canada
| | - Andrea Rizzotto
- The Institute of Cell Biology, University of Edinburgh, Kings Buildings, Michael Swann Buildings, Max Born Crescent, Edinburgh EH9 3BF, U.K
| | - Nhan T. Pham
- Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh EH9 3BF, U.K
| | - Sonja Koivukoski
- Institute of Biomedicine, University of Eastern Finland, Kuopio 70210, Finland
| | - Aishwarya Sivakumar
- The Institute of Cell Biology, University of Edinburgh, Kings Buildings, Michael Swann Buildings, Max Born Crescent, Edinburgh EH9 3BF, U.K
| | - Steven Shave
- Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh EH9 3BF, U.K
| | - Jan Wildenhain
- Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh EH9 3BF, U.K
| | - Nikolaj Zuleger
- The Institute of Cell Biology, University of Edinburgh, Kings Buildings, Michael Swann Buildings, Max Born Crescent, Edinburgh EH9 3BF, U.K
| | - Jeremy T. Keys
- Nancy E. and Peter C. Meinig School of Biomedical Engineering & Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York 14853, United States
| | - Jayne Culley
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, U.K
| | - Yijing Zheng
- Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh EH9 3BF, U.K
| | - Jan Lammerding
- Nancy E. and Peter C. Meinig School of Biomedical Engineering & Weill Institute for Cell and Molecular Biology, Cornell University, Ithaca, New York 14853, United States
| | - Neil O. Carragher
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, U.K
| | - Valerie G. Brunton
- Edinburgh Cancer Research UK Centre, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh EH4 2XR, U.K
| | - Leena Latonen
- Institute of Biomedicine, University of Eastern Finland, Kuopio 70210, Finland
| | - Manfred Auer
- Institute of Quantitative Biology, Biochemistry and Biotechnology, University of Edinburgh, Edinburgh EH9 3BF, U.K
| | - Mike Tyers
- Institute for Research in Immunology and Cancer, Université de Montréal, Montréal, Québec H3T 1J4, Canada
| | - Eric C. Schirmer
- The Institute of Cell Biology, University of Edinburgh, Kings Buildings, Michael Swann Buildings, Max Born Crescent, Edinburgh EH9 3BF, U.K
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17
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Manjunath GB, Awasthi SP, Zahid MSH, Hatanaka N, Hinenoya A, Iwaoka E, Aoki S, Ramamurthy T, Yamasaki S. Piperine, an active ingredient of white pepper suppresses growth of multidrug resistant toxigenic Vibrio cholerae and other pathogenic bacteria. Lett Appl Microbiol 2022; 74:472-481. [PMID: 34978719 DOI: 10.1111/lam.13646] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/24/2021] [Accepted: 12/28/2021] [Indexed: 11/30/2022]
Abstract
Emergence and rapid spread of multi-drug resistant (MDR) bacteria including Vibrio cholerae are a global public health issue. Much attention has been paid to natural compounds, such as spices and herbs to find novel antimicrobial compounds as they are considered to be cheaper alternatives to develop as a drug. Here, we show that methanol extract of white pepper could inhibit growth of V. cholerae O1 El Tor variant, responsible for the recent outbreaks/epidemics. Furthermore, we demonstrate for the first time that piperine, the major component of white pepper showed a dose-dependent bactericidal effect on V. cholerae growth irrespective of their biotypes and serogroups in presence of 200 and 300 µg ml-1 of piperine, respectively. Piperine also inhibited growth of MDR strains of Pseudomonas aeruginosa, Escherichia coli isolated from poultry and enterohemorrhagic/enteroaggregative E. coli O104 in presence of 200 µg ml-1 . Interestingly, we did not observe any significant inhibitory effect of piperine on E. coli strains isolated from healthy person even up to 200 µg ml-1 . Our data suggest that piperine could be a novel antimicrobial agent in therapeutic and preventive applications against infections caused by pathogenic bacteria including MDR strains.
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Affiliation(s)
- Goutham Belagula Manjunath
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Sharda Prasad Awasthi
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Osaka, Japan
| | - M Shamim Hasan Zahid
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan
| | - Noritoshi Hatanaka
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Osaka, Japan
| | - Atsushi Hinenoya
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Osaka, Japan
| | - Emiko Iwaoka
- Faculty of Pharmacy, Hyogo University of Health Sciences, Hyogo, Japan
| | - Shunji Aoki
- Faculty of Pharmacy, Hyogo University of Health Sciences, Hyogo, Japan
| | | | - Shinji Yamasaki
- Department of Veterinary Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Osaka, Japan.,Asian Health Science Research Institute, Osaka Prefecture University, Osaka, Japan.,Osaka International Research Center for Infectious Diseases, Osaka Prefecture University, Osaka, Japan
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18
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Dong XH, Peng C, Zhang YY, Jiang Y, Yang LJ, He JB, Tao X, Zhang C, Chen AF, Xie HH. Low-Dose Piperlongumine Rescues Impaired Function of Endothelial Progenitor Cells and Reduces Cerebral Ischemic Injury in High-Fat Diet-Fed Mice. Front Pharmacol 2021; 12:689880. [PMID: 34867315 PMCID: PMC8634707 DOI: 10.3389/fphar.2021.689880] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 10/22/2021] [Indexed: 12/20/2022] Open
Abstract
It is of great clinical significance to develop potential novel strategies to prevent cardio-cerebrovascular complications in patients with hyperlipidemia. Vascular Endothelial integrity and function play a key role in the prevention of cardio-cerebrovascular diseases. Endothelial progenitor cells (EPCs) can home to sites of ischemic injury and promote endothelial regeneration and neovascularization. Hypercholesterolemia impairs the function of EPC. The present study attempted to identify the effect of piperlongumine on EPCs’ angiogenic potential and cerebral ischemic injury in high-fat diet-fed (HFD-fed) mice. Here, we showed that treatment with low-does piperlongumine (0.25 mg/kg/day) for 8 weeks significantly improved EPCs function and reduced the cerebral ischemic injury (both infarct volumes and neurobehavioral outcomes) in HFD-fed mice. In addition, low-dose piperlongumine administration increased intracellular NO level and reduced intracellular O2- level in EPCs of HFD-fed mice. Moreover, incubation with piperlongumine (1.0 μM, 24 h) reduced thrombospondin-1/2 (TSP-1/2, a potent angiogenesis inhibitor) expression levels in EPCs from HFD-fed mice, increased the therapeutic effect of EPC from HFD-fed mice on cerebral ischemic injury reduction and angiogenesis promotion in HFD-fed mice, and the donor derived EPCs homed to the recipient ischemic brain. In conclusion, low-dose piperlongumine can enhance EPCs’ angiogenic potential and protect against cerebral ischemic injury in HFD-fed mice. It is implied that treatment with low-dose piperlongumine might be a potential option to prevent ischemic diseases (including stroke) in patients with hyperlipidemia, and priming with piperlongumine might be a feasible way to improve the efficacy of EPC-based therapy for ischemic diseases.
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Affiliation(s)
- Xiao-Hui Dong
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,Department of Pharmacy, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Cheng Peng
- School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yu-Yi Zhang
- Department of Pharmacy, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu Jiang
- Department of Pharmacy, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Li-Jun Yang
- School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jia-Bei He
- School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xia Tao
- Department of Pharmacy, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, China
| | - Chuan Zhang
- School of Medicine, Shanghai University, Shanghai, China
| | - Alex F Chen
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - He-Hui Xie
- Institute for Developmental and Regenerative Cardiovascular Medicine, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.,School of Public Health and Hongqiao International Institute of Medicine, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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19
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Development of Piperine-Loaded Solid Self-Nanoemulsifying Drug Delivery System: Optimization, In-Vitro, Ex-Vivo, and In-Vivo Evaluation. NANOMATERIALS 2021; 11:nano11112920. [PMID: 34835684 PMCID: PMC8624913 DOI: 10.3390/nano11112920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 12/23/2022]
Abstract
Hypertension is a cardiovascular disease that needs long-term medication. Oral delivery is the most common route for the administration of drugs. The present research is to develop piperine self-nanoemulsifying drug delivery system (PE-SNEDDS) using glyceryl monolinoleate (GML), poloxamer 188, and transcutol HP as oil, surfactant, and co-surfactant, respectively. The formulation was optimized by three-factor, three-level Box-Behnken design. PE-SNEDDs were characterized for globule size, emulsification time, stability, in-vitro release, and ex-vivo intestinal permeation study. The optimized PE-SNEDDS (OF3) showed the globule size of 70.34 ± 3.27 nm, percentage transmittance of 99.02 ± 2.02%, and emulsification time of 53 ± 2 s Finally, the formulation OF3 was transformed into solid PE-SNEDDS (S-PE-SNEDDS) using avicel PH-101 as adsorbent. The reconstituted SOF3 showed a globule size of 73.56 ± 3.54 nm, PDI of 0.35 ± 0.03, and zeta potential of −28.12 ± 2.54 mV. SEM image exhibited the PE-SNEDDS completely adsorbed on avicel. Thermal analysis showed the drug was solubilized in oil, surfactant, and co-surfactant. S-PE-SNEDDS formulation showed a more significant (p < 0.05) release (97.87 ± 4.89% in 1 h) than pure PE (27.87 ± 2.65% in 1 h). It also exhibited better antimicrobial activity against S. aureus and P. aeruginosa and antioxidant activity as compared to PE dispersion. The in vivo activity in rats exhibited better (p < 0.05) antihypertensive activity as well as 4.92-fold higher relative bioavailability than pure PE dispersion. Finally, from the results it can be concluded that S-PE-SNEDDS might be a better approach for the oral delivery to improve the absorption and therapeutic activity.
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20
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Choi J, Jang A, Yoon YK, Kim Y. Development of Novel Peptides for the Antimicrobial Combination Therapy against Carbapenem-Resistant Acinetobacter baumannii Infection. Pharmaceutics 2021; 13:pharmaceutics13111800. [PMID: 34834215 PMCID: PMC8619914 DOI: 10.3390/pharmaceutics13111800] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/20/2021] [Accepted: 10/25/2021] [Indexed: 11/30/2022] Open
Abstract
Carbapenem-resistant Acinetobacter baumannii (CRAB) infection has a high mortality rate, making the development of novel effective antibiotic therapeutic strategies highly critical. Antimicrobial peptides can outperform conventional antibiotics regarding drug resistance and broad-spectrum activity. PapMA, an 18-residue hybrid peptide, containing N-terminal residues of papiliocin and magainin 2, has previously demonstrated potent antibacterial activity. In this study, PapMA analogs were designed by substituting Ala15 or Phe18 with Ala, Phe, and Trp. PapMA-3 with Trp18 showed the highest bacterial selectivity against CRAB, alongside low cytotoxicity. Biophysical studies revealed that PapMA-3 permeabilizes CRAB membrane via strong binding to LPS. To reduce toxicity via reduced antibiotic doses, while preventing the emergence of multi-drug resistant bacteria, the efficacy of PapMA-3 in combination with six selected antibiotics was evaluated against clinical CRAB isolates (C1–C5). At 25% of the minimum inhibition concentration, PapMA-3 partially depolarized the CRAB membrane and caused sufficient morphological changes, facilitating the entry of antibiotics into the bacterial cell. Combining PapMA-3 with rifampin significantly and synergistically inhibited CRAB C4 (FICI = 0.13). Meanwhile, combining PapMA-3 with vancomycin or erythromycin, both potent against Gram-positive bacteria, demonstrated remarkable synergistic antibiofilm activity against Gram-negative CRAB. This study could aid in the development of combination therapeutic approaches against CRAB.
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Affiliation(s)
- Joonhyeok Choi
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (J.C.); (A.J.)
| | - Ahjin Jang
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (J.C.); (A.J.)
| | - Young Kyung Yoon
- Division of Infectious Diseases, Department of Internal Medicine, Korea University College of Medicine, Seoul 02841, Korea;
| | - Yangmee Kim
- Department of Bioscience and Biotechnology, Konkuk University, Seoul 05029, Korea; (J.C.); (A.J.)
- Correspondence: ; Tel.: +822-450-3421; Fax: +822-447-5987
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21
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Parama D, Rana V, Girisa S, Verma E, Daimary UD, Thakur KK, Kumar A, Kunnumakkara AB. The promising potential of piperlongumine as an emerging therapeutics for cancer. EXPLORATION OF TARGETED ANTI-TUMOR THERAPY 2021; 2:323-354. [PMID: 36046754 PMCID: PMC9400693 DOI: 10.37349/etat.2021.00049] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 07/04/2021] [Indexed: 12/24/2022] Open
Abstract
In spite of the immense advancement in the diagnostic and treatment modalities, cancer continues to be one of the leading causes of mortality across the globe, responsible for the death of around 10 million patients every year. The foremost challenges faced in the treatment of this disease are chemoresistance, adverse effects of the drugs, and the high cost of treatment. Though scientific studies over the past few decades have foreseen and are focusing on the cancer-preventive and therapeutic potential of natural products and their underlying mechanism of action, many more of these agents are not still explored. Piperlongumine (PL), or piplartine, is one such alkaloid isolated from Piper longum Linn. which is shown to be safe and has significant potential in the prevention and therapy of cancer. Numerous shreds of evidence have established the ability of this alkaloid and its analogs and nanoformulations in modulating various complex molecular pathways such as phosphatidylinositol-3-kinase/protein kinase B /mammalian target of rapamycin, nuclear factor kappa-B, Janus kinases/signal transducer and activator of transcription 3, etc. and inhibit different hallmarks of cancer such as cell survival, proliferation, invasion, angiogenesis, epithelial-mesenchymal-transition, metastases, etc. In addition, PL was also shown to inhibit radioresistance and chemoresistance and sensitize the cancer cells to the standard chemotherapeutic agents. Therefore, this compound has high potential as a drug candidate for the prevention and treatment of different cancers. The current review briefly reiterates the anti-cancer properties of PL against different types of cancer, which permits further investigation by conducting clinical studies.
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Affiliation(s)
- Dey Parama
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Varsha Rana
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Sosmitha Girisa
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Elika Verma
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Uzini Devi Daimary
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Krishan Kumar Thakur
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Aviral Kumar
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
| | - Ajaikumar B. Kunnumakkara
- Cancer Biology Laboratory and DBT-AIST International Center for Translational and Environmental Research (DAICENTER), Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Assam 781039, India
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22
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Dudeja S, Chhokar V, Beniwal V, Badgujjar H, Chauhan R, Soni S, Kumar A. Optimization and production of antimicrobial compounds by Aspergillus flavus MTCC 13062 and its synergistic studies. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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23
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Sivashanmugam A, Velmathi S. Synthesis, in vitro and in silico anti-bacterial analysis of piperine and piperic ester analogues. Chem Biol Drug Des 2021; 98:19-29. [PMID: 33794076 DOI: 10.1111/cbdd.13842] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 01/02/2021] [Accepted: 03/23/2021] [Indexed: 12/31/2022]
Abstract
A set of 12 analogues of piperine was designed, replacing the amide functional group of the molecule with different aliphatic and aromatic ester functional groups. Molecular docking studies of these molecules with FDA-approved target proteins for anti-bacterial drugs were done. The binding energy of the proteins and the ligands were low and the analogues were found to be drug-like based on the ADME results; hence, the molecules were synthesized. The synthesized compounds were tested for their anti-bacterial property against six bacterial species via Agar well-diffusion method. Acinetobacter baumannii, Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Enterococcus faecalis and Staphylococcus epidermidis were the strains tested. The overall susceptibility is higher in gram-positive. The analogues showed better activity than piperine. The analogues, propyl piperic ester (P3) and 2-fluorophenyl piperic ester (P9) and 4-fluorophenyl piperic ester (P10) showed comparatively bigger inhibition zones for all the strains.
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Affiliation(s)
- Arthi Sivashanmugam
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, India
| | - Sivan Velmathi
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, India
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24
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Casciaro B, Cappiello F, Verrusio W, Cacciafesta M, Mangoni ML. Antimicrobial Peptides and their Multiple Effects at Sub-Inhibitory Concentrations. Curr Top Med Chem 2021; 20:1264-1273. [PMID: 32338221 DOI: 10.2174/1568026620666200427090912] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/06/2020] [Accepted: 03/16/2020] [Indexed: 01/10/2023]
Abstract
The frequent occurrence of multidrug-resistant strains to conventional antimicrobials has led to a clear decline in antibiotic therapies. Therefore, new molecules with different mechanisms of action are extremely necessary. Due to their unique properties, antimicrobial peptides (AMPs) represent a valid alternative to conventional antibiotics and many of them have been characterized for their activity and cytotoxicity. However, the effects that these peptides cause at concentrations below the minimum growth inhibitory concentration (MIC) have yet to be fully analyzed along with the underlying molecular mechanism. In this mini-review, the ability of AMPs to synergize with different antibiotic classes or different natural compounds is examined. Furthermore, data on microbial resistance induction are reported to highlight the importance of antibiotic resistance in the fight against infections. Finally, the effects that sub-MIC levels of AMPs can have on the bacterial pathogenicity are summarized while showing how signaling pathways can be valid therapeutic targets for the treatment of infectious diseases. All these aspects support the high potential of AMPs as lead compounds for the development of new drugs with antibacterial and immunomodulatory activities.
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Affiliation(s)
- Bruno Casciaro
- Center For Life Nano Science @ Sapienza, Italian Institute of Technology, Rome 00161, Italy
| | - Floriana Cappiello
- Laboratory affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, Rome 00185, Italy
| | - Walter Verrusio
- Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome 00185, Italy
| | - Mauro Cacciafesta
- Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome 00185, Italy
| | - Maria Luisa Mangoni
- Laboratory affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, Rome 00185, Italy
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25
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Wijesundara NM, Lee SF, Cheng Z, Davidson R, Rupasinghe HPV. Carvacrol exhibits rapid bactericidal activity against Streptococcus pyogenes through cell membrane damage. Sci Rep 2021; 11:1487. [PMID: 33452275 PMCID: PMC7811018 DOI: 10.1038/s41598-020-79713-0] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 12/07/2020] [Indexed: 12/13/2022] Open
Abstract
Streptococcus pyogenes is an important human pathogen worldwide. The identification of natural antibacterial phytochemicals has renewed interest due to the current scarcity of antibiotic development. Carvacrol is a monoterpenoid found in herbs. We evaluated carvacrol alone and combined with selected antibiotics against four strains of S. pyogenes in vitro. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of carvacrol against S. pyogenes were 125 µg/mL (0.53 mM) and 250 µg/mL (1.05 mM), respectively. Kill curve results showed that carvacrol exhibits instantaneous bactericidal activity against S. pyogenes. We also demonstrated the potential mechanism of action of carvacrol through compromising the cell membrane integrity. Carvacrol induced membrane integrity changes leading to leakage of cytoplasmic content such as lactate dehydrogenase enzymes and nucleic acids. We further confirmed dose-dependent rupturing of cells and cell deaths using transmission electron microscopy. The chequerboard assay results showed that carvacrol possesses an additive-synergistic effect with clindamycin or penicillin. Carvacrol alone, combined with clindamycin or penicillin, can be used as a safe and efficacious natural health product for managing streptococcal pharyngitis.
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Affiliation(s)
- Niluni M Wijesundara
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada.,Department of Biology, Faculty of Science, Dalhousie University, Halifax, NS, Canada.,Department of Animal Science, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, Sri Lanka
| | - Song F Lee
- Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.,Department of Applied Oral Sciences, Faculty of Dentistry, Dalhousie University, Halifax, NS, Canada.,Canadian Center for Vaccinology, Nova Scotia Health Authority, and the Izaak Walton Killam Health Centre, Dalhousie University, Halifax, NS, Canada
| | - Zhenyu Cheng
- Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada
| | - Ross Davidson
- Department of Microbiology & Immunology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.,Canadian Center for Vaccinology, Nova Scotia Health Authority, and the Izaak Walton Killam Health Centre, Dalhousie University, Halifax, NS, Canada.,Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada.,Division of Microbiology at the Queen Elizabeth II Health Sciences Centre, Department of Pathology and Laboratory Medicine, Nova Scotia Health Authority, Halifax, NS, Canada
| | - H P Vasantha Rupasinghe
- Department of Plant, Food, and Environmental Sciences, Faculty of Agriculture, Dalhousie University, Truro, NS, Canada. .,Department of Biology, Faculty of Science, Dalhousie University, Halifax, NS, Canada. .,Department of Pathology, Faculty of Medicine, Dalhousie University, Halifax, NS, Canada. .,National Institute of Fundamental Studies, Kandy, Sri Lanka.
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26
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Seyler TM, Moore C, Kim H, Ramachandran S, Agris PF. A New Promising Anti-Infective Agent Inhibits Biofilm Growth by Targeting Simultaneously a Conserved RNA Function That Controls Multiple Genes. Antibiotics (Basel) 2021; 10:41. [PMID: 33406640 PMCID: PMC7824582 DOI: 10.3390/antibiotics10010041] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/22/2020] [Accepted: 12/28/2020] [Indexed: 12/11/2022] Open
Abstract
Combating single and multi-drug-resistant infections in the form of biofilms is an immediate challenge. The challenge is to discover innovative targets and develop novel chemistries that combat biofilms and drug-resistant organisms, and thwart emergence of future resistant strains. An ideal novel target would control multiple genes, and can be inhibited by a single compound. We previously demonstrated success against Staphylococcus aureus biofilms by targeting the tRNA-dependent regulated T-box genes, not present in the human host. Present in Gram-positive bacteria, T-box genes attenuate transcription with a riboswitch-like element that regulates the expression of aminoacyl-tRNA synthetases and amino acid metabolism genes required for cell viability. PKZ18, the parent of a family of compounds selected in silico from 305,000 molecules, inhibits the function of the conserved T-box regulatory element and thus blocks growth of antibiotic-resistant S. aureus in biofilms. The PKZ18 analog PKZ18-22 was 10-fold more potent than vancomycin in inhibiting growth of S. aureus in biofilms. In addition, PKZ18-22 has a synergistic effect with existing antibiotics, e.g., gentamicin and rifampin. PKZ18-22 inhibits the T-box regulatory mechanism, halts the transcription of vital genes, and results in cell death. These effects are independent of the growth state, planktonic or biofilm, of the bacteria, and could inhibit emergent strains.
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Affiliation(s)
- Thorsten M. Seyler
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 277010, USA;
| | - Christina Moore
- Department of Orthopaedic Surgery, Duke University School of Medicine, Durham, NC 277010, USA;
| | - Haein Kim
- Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA; (H.K.); (S.R.)
| | - Sheetal Ramachandran
- Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA; (H.K.); (S.R.)
| | - Paul F. Agris
- Department of Medicine, Duke University School of Medicine, Durham, NC 27710, USA; (H.K.); (S.R.)
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Small-Molecule Antibiotics Inhibiting tRNA-Regulated Gene Expression Is a Viable Strategy for Targeting Gram-Positive Bacteria. Antimicrob Agents Chemother 2020; 65:AAC.01247-20. [PMID: 33077662 PMCID: PMC7927825 DOI: 10.1128/aac.01247-20] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/09/2020] [Indexed: 11/20/2022] Open
Abstract
Bacterial infections and the rise of antibiotic resistance, especially multidrug resistance, have generated a clear need for discovery of novel therapeutics. We demonstrated that a small-molecule drug, PKZ18, targets the T-box mechanism and inhibits bacterial growth. The T-box is a structurally conserved riboswitch-like gene regulator in the 5' untranslated region (UTR) of numerous essential genes of Gram-positive bacteria. T-boxes are stabilized by cognate, unacylated tRNA ligands, allowing the formation of an antiterminator hairpin in the mRNA that enables transcription of the gene. In the absence of an unacylated cognate tRNA, transcription is halted due to the formation of a thermodynamically more stable terminator hairpin. PKZ18 targets the site of the codon-anticodon interaction of the conserved stem I and reduces T-box-controlled gene expression. Here, we show that novel analogs of PKZ18 have improved MICs, bactericidal effects against methicillin-resistant Staphylococcus aureus (MRSA), and increased efficacy in nutrient-limiting conditions. The analogs have reduced cytotoxicity against eukaryotic cells compared to PKZ18. The PKZ18 analogs acted synergistically with aminoglycosides to significantly enhance the efficacy of the analogs and aminoglycosides, further increasing their therapeutic windows. RNA sequencing showed that the analog PKZ18-22 affects expression of 8 of 12 T-box controlled genes in a statistically significant manner, but not other 5'-UTR regulated genes in MRSA. Very low levels of resistance further support the existence of multiple T-box targets for PKZ18 analogs in the cell. Together, the multiple targets, low resistance, and synergy make PKZ18 analogs promising drugs for development and future clinical applications.
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28
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Imam SS, Alshehri S, Alzahrani TA, Hussain A, Altamimi MA. Formulation and Evaluation of Supramolecular Food-Grade Piperine HP β CD and TPGS Complex: Dissolution, Physicochemical Characterization, Molecular Docking, In Vitro Antioxidant Activity, and Antimicrobial Assessment. Molecules 2020; 25:molecules25204716. [PMID: 33066657 PMCID: PMC7587399 DOI: 10.3390/molecules25204716] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/04/2020] [Accepted: 10/11/2020] [Indexed: 11/16/2022] Open
Abstract
The purpose of the present study was to improve the aqueous solubility, dissolution, and antioxidant activity of the water-insoluble drug piperine (PIP). The study was performed by preparing PIP binary inclusion complex (PIP BIC) and piperine ternary inclusion complex (PIP TIC) by different methods. The effect of a hydrophilic auxiliary substance (TPGS) was assessed with addition to PIP and hydroxypropyl beta cyclodextrin (HP β CD) complex. The phase solubility study was performed to evaluate the complexation efficiency and stability constant. The aqueous solubility, dissolution, physicochemical assessment, antioxidant activity, antimicrobial activity, and molecular docking were further evaluated to check the effect of the complexation of PIP. The stability constant (Ks) value was found to be 238 and 461 M−1 for the binary and ternary inclusion complex. The dissolution study results showed a marked enhancement of release in comparison to pure drug. XRD and SEM studies revealed the presence of more agglomerated and amorphous structures of PIP, which confirmed the formation of complexes. The results of DPPH radical scavenging and antimicrobial activity showed a significant (p < 0.05) enhancement in scavenging activity for PIP TIC (microwave irradiation (MI)). The docking studies have revealed that the binding affinity of TPGS at the PIP-HP β CD complex was −5.2 kcal/mol.
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29
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Effect of polyherbal microemulsion on Staphylococcus epidermidis: Formulation development, CCD based optimization, characterization, and antibacterial activity by scanning electron microscopy. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.101641] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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30
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Thin-layer chromatographic quantification of magnolol and honokiol in dietary supplements and selected biological properties of these preparations. J Chromatogr A 2020; 1625:461230. [PMID: 32709311 DOI: 10.1016/j.chroma.2020.461230] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 05/08/2020] [Accepted: 05/09/2020] [Indexed: 01/12/2023]
Abstract
Two isomeric biphenyl neolignans, magnolol and honokiol, are considered as constituents responsible for the healing effect of magnolia bark, a traditional Oriental medicine. To survey the increasing number of dietary supplements that contain magnolia bark or its extract, an affordable quantitative thin-layer chromatography (TLC) - densitometry method was developed. The methanol extracts were analyzed on the silica gel plates after manual sample application using n-hexane - ethyl acetate - ethanol (16:3:1, v/v/v) as a mobile phase. For quantitation, the chromatograms were scanned in the absorbance mode at the wavelength λ = 290 nm. The limits of detection and quantitation were 90 and 280 ng/zone for magnolol and 70 and 200 ng/zone for honokiol, respectively. None of the two targeted neolignans were detected in two of the six analyzed supplements. In the other four samples, the measured amounts were between 0.95-114.69 mg g-1 for magnolol and 4.88-84.86 mg g-1 for honokiol. Moreover, separations of these two neolignans on the TLC and high-performance TLC (HPTLC) layers were compared and HPTLC was combined with antioxidant (DPPH) and antibacterial (Bacillus subtilis and Aliivibrio fischeri) assays and mass spectrometry (MS), using the elution-based interface. Both magnolol and honokiol exhibited effects in all bioactivity assays. The HPTLC-MS tests confirmed purity of neolignan zones in the extracts of dietary supplements and supported tentative identification of the alkaloid piperine and the isoflavone daidzein as additional bioactive components of the investigated dietary supplements. Using the same mobile phase in the orthogonal directions 2D-HPTLC-MS experiments proved degradation, i.e., instability of magnolol and honokiol on the silica gel adsorbent.
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31
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Lonsdale DO, Lipman J. Antimicrobial Resistance: We Must Pursue a Collaborative, Global Approach and Use a "One Health" Approach. Antibiotics (Basel) 2019; 8:E237. [PMID: 31783648 PMCID: PMC6963947 DOI: 10.3390/antibiotics8040237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Accepted: 11/25/2019] [Indexed: 02/01/2023] Open
Abstract
Treating infection is a key part of the work of most clinicians [...].
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Affiliation(s)
- Dagan O Lonsdale
- Department of Intensive Care Medicine, St George’s University Hospitals NHS Foundation Trust, London SW17 0QT, UK;
- Department of Clinical Pharmacology and Therapeutics, St George’s, University of London, London SW17 0RE, UK
| | - Jeffrey Lipman
- Royal Brisbane and Womens’ Hospital, University of Queensland, Brisbane 4029, Australia
- Nimes University Hospital, University of Montpellier, 30029 Nimes, France
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32
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Nguyen QH, Nguyen HV, Vu THN, Chu-Ky S, Vu TT, Hoang H, Quach NT, Bui TL, Chu HH, Khieu TN, Sarter S, Li WJ, Phi QT. Characterization of Endophytic Streptomyces griseorubens MPT42 and Assessment of Antimicrobial Synergistic Interactions of its Extract and Essential Oil from Host Plant Litsea cubeba. Antibiotics (Basel) 2019; 8:E197. [PMID: 31661781 PMCID: PMC6963632 DOI: 10.3390/antibiotics8040197] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Revised: 10/16/2019] [Accepted: 10/25/2019] [Indexed: 11/21/2022] Open
Abstract
The present study aimed to evaluate the synergistic effects of the crude ethyl acetate extract (CEAE) from endophytic actinomycete MPT42 and essential oil (EO) of the same host plant Litsea cubeba. The isolate MPT42, exhibiting broad-spectrum antimicrobial activities and harboring all three antibiotic-related biosynthetic genes pks-I, pks-II, and nrps, was identified as Streptomycete griseorubens based on an analysis of the morphology, physiology, and 16S rDNA sequence. Minimum inhibitory concentrations (MICs) and the fractional inhibitory concentration index were used to estimate the synergistic effects of various combined ratios between CEAE or antibiotics (erythromycin, vancomycin) and EO toward 13 microbial strains including pathogens. L. cubeba fruit EO, showing the main chemical constituents of 36.0% citral, 29.6% carveol, and 20.5% limonene, revealed an active-low against tested microbes (MICs ≥ 600 μg/mL). The CEAE of S. griseorubens culture exhibited moderate-strong antimicrobial activities against microbes (MICs = 80-600 μg/mL). Analysis of the mechanism of action of EO on Escherichia coli ATCC 25922 found that bacterial cells were dead after 7 h of the EO treatment at 1 MIC (5.5 mg/mL), where 62% cells were permeabilized after 2 h and 3% of them were filament (length ≥ 6 μm). Combinations of CEAE, erythromycin, or vancomycin with EO led to significant synergistic antimicrobial effects against microbes with 4-16 fold reduction in MIC values when compared to their single use. Interestingly, the vancomycin-EO combinations exhibited a strong synergistic effect against five Gram-negative bacterial species. This could assume that the synergy was possibly due to increasing the cell membrane permeability by the EO acting on the bacterial cells, which allows the uptake and diffusion of antimicrobial substances inside the cell easily. These findings in the present study therefore propose a possible alternative to combat the emergence of multidrug-resistant microbes in veterinary and clinics.
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Affiliation(s)
- Quang Huy Nguyen
- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- University of Science and Technology of Hanoi (USTH), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Hai Van Nguyen
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, 1, Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Thi Hanh-Nguyen Vu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Son Chu-Ky
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, 1, Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Thu Trang Vu
- School of Biotechnology and Food Technology, Hanoi University of Science and Technology, 1, Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Ha Hoang
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Ngoc Tung Quach
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Thi Lien Bui
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Hoang Ha Chu
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
| | - Thi Nhan Khieu
- Ministry of Education and Training, 49 Dai Co Viet, Hai Ba Trung, Hanoi 10000, Vietnam.
| | - Samira Sarter
- CIRAD, UMR ISEM, University Montpellier, F-34398 Montpellier, France.
- ISEM, Univ Montpellier, CNRS, EPHE, IRD, F-34398 Montpellier, France.
| | - Wen-Jun Li
- School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
- Yunnan Institute of Microbiology, Yunnan University, Kunming 650091, China.
| | - Quyet-Tien Phi
- Institute of Biotechnology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
- Graduate University of Science and Technology (GUST), Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi 10000, Vietnam.
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