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Zhang Y, Zhou M, Zhou Y, Guan X. Dietary components regulate chronic diseases through gut microbiota: a review. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2023; 103:6752-6766. [PMID: 37225671 DOI: 10.1002/jsfa.12732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/27/2023] [Accepted: 05/16/2023] [Indexed: 05/26/2023]
Abstract
In recent years, gut microbiota as an immune organ has gradually become the mainstream of research. When the composition of the gut microbiota is changed significantly, this may affect human health. This review details the major microbiota composition and metabolites in the gut and discusses chronic diseases based on gut dysbiosis, including obesity, liver injury, colon cancer, atherosclerosis, and central nervous system diseases. We comprehensively summarize the changes in abundance of relevant gut microbiota by ingesting different diet components (such as food additives, dietary polyphenols, polysaccharides, fats, proteins) and their influence on the microbial quorum sensing system, thereby regulating related diseases. We believe that quorum sensing can be used as a new entry point to explain the mechanism of ingesting dietary components to improve gut microbiota and thereby regulate related diseases. This review hopes to provide a theoretical basis for future research on improving disease symptoms by ingesting functional foods containing dietary components. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Ying Zhang
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai, China
| | - Ming Zhou
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Yaqin Zhou
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Xiao Guan
- School of Health Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
- National Grain Industry (Urban Grain and Oil Security) Technology Innovation Center, Shanghai, China
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Younis NA, Hemdan A, Zafer MM, Abd-Elsalam WH, Abouelatta SM. Standardization and quantitative analysis of Araucaria Heterophylla extract via an UPLC-MS/MS method and its formulation as an antibacterial phytonanoemulsion gel. Sci Rep 2022; 12:12557. [PMID: 35869113 PMCID: PMC9307656 DOI: 10.1038/s41598-022-16188-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 07/06/2022] [Indexed: 11/09/2022] Open
Abstract
AbstractSkin infections are among the bacterial infections that present significant therapeutic challenges due to antibiotic resistance. Recently, herbal products clutched a significant attention as safe replacements for other medications but their low aqueous solubility and poor bioavailability are considered major challenges which could be circumvented via formulation. As a species of genera Araucaria, Araucaria Heterophylla possesses pharmacological activities such as antioxidant and antibacterial actions, and this study aimed to standardize the extract of the plant against 4ʹʹʹmethoxyamentoflavone (as a main component of the extract) through a validated UPLC-MS/MS method and evaluate its antibacterial activity, which was followed by loading the standardized extract into a nanoemulsion to form a phytonanoemulsion (PNE), where the design analysis and optimization were performed through a simplex lattice design. The optimized PNE (PNE 3) was then loaded into HPMC/Pluronic F-127 gel (in ratio 1:4) to sustain the release of the active constituent. The heightened penetrability of PNE 3 gel was visualized via confocal laser scanning microscopy, and its prolonged effect was proved thru an in vivo study conducted on male Wistar rats. A histopathological study revealed the safety of the formulation when applied topically. Thus, PNE gel could be a potentially broad-spectrum antibacterial drug delivery system.
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Phytochemical Analysis, Antioxidant, Antimicrobial, and Anti-Swarming Properties of Hibiscus sabdariffa L. Calyx Extracts: In Vitro and In Silico Modelling Approaches. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:1252672. [PMID: 35646135 PMCID: PMC9142284 DOI: 10.1155/2022/1252672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 01/18/2023]
Abstract
The aim of this study was to investigate the phytochemical composition of dried Roselle calyx (Hibiscus sabdariffa L.) using both ethanolic and aqueous extracts. We report the antimicrobial activities against a wide range of bacteria, yeast, and fungi. The antioxidant activities were tested using 2,2-diphenyl-1-picrylhydrazyl (DPPH), hydroxyl, and 2–2′-azinobis-(3-ethylbenzthiazoline-6-sulfonic acid) radical scavenging assays. We report also for the first time the effect of the swarming motility in Pseudomonas aeruginosa PAO1. Our results showed that the tested two extracts were a rich source of phenols, flavonoids, and tannins with different degrees. Additionally, eleven phytoconstituents were identified by LC/MS technique (Hibiscus acid: 3-caffeoylquinic acid, 5-caffeoylquinic acid, 5-feruloylquinic acid, cyanidin 3-o-glucoside, myricetin, quercetin 7-o-rutinoside, quercetin 3-o-glucoside, delphinidin 3-o-sambubioside, and kaempferol 3-o-p-coumaroyl-glucoside). Also, it was shown that the calyx extract can scavenge 86% of the DPPH radical, while the rate of 53% and 23% of inhibition of the DPPH was obtained only at the concentration of 125 and 50 µg/mL, and a small inhibition was made at a concentration of 5 μg/mL. Roselle extracts inhibited the growth of the selected microorganisms at low concentrations, while higher concentrations are needed to completely kill them. However, no activity against CVB-3 was recorded for both extracts. In addition, the obtained extracts reduced the swarming motility of P. aeruginosa at 2.5 mg/ml. The docking simulation showed acceptable binding affinities (up to −9.6 kcal/mol) and interaction with key residues of 1JIJ, 2QZW, and 2UVO. The obtained results highlighted the potential use of Roselle extract as a source of phytoconstituents with promising antimicrobial, antioxidant, and anti-quorum sensing activities.
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Rafey A, Amin A, Kamran M, Haroon U, Farooq K, Foubert K, Pieters L. Analysis of Plant Origin Antibiotics against Oral Bacterial Infections Using In Vitro and In Silico Techniques and Characterization of Active Constituents. Antibiotics (Basel) 2021; 10:antibiotics10121504. [PMID: 34943716 PMCID: PMC8699006 DOI: 10.3390/antibiotics10121504] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/23/2021] [Accepted: 11/25/2021] [Indexed: 11/17/2022] Open
Abstract
The pervasiveness of oral bacterial infections in diabetic patients is a serious health concern that may produce severe complications. We investigated 26 Ayurvedic medicinal plants traditionally used for treatment of the oral bacterial infections with the aim to look for new promising drug leads that can be further employed for herbal formulation design. The plants were grouped into three categories based on traditional usage. All plant extracts were examined for antibacterial, antibiofilm and antiquorum-sensing properties. The plants with significant activities including Juglans regia, Syzygium aromaticum, Eruca sativa, Myristica fragrans, Punica granatum and Azadirachta indica were further analyzed using HPLC-DAD-QToF and GC-MS. In silico and in vitro activity was evaluated for selected constituents. Finally, it could be concluded that eugenol and 2-phenylethylisothiocyanate are major contributors towards inhibition of bacterial biofilms and quorum sensing.
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Affiliation(s)
- Abdul Rafey
- NPRL, Gomal Centre of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (A.R.); (A.A.); (M.K.)
| | - Adnan Amin
- NPRL, Gomal Centre of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (A.R.); (A.A.); (M.K.)
| | - Muhammad Kamran
- NPRL, Gomal Centre of Pharmaceutical Sciences, Faculty of Pharmacy, Gomal University, Dera Ismail Khan 29050, Pakistan; (A.R.); (A.A.); (M.K.)
| | - Uzma Haroon
- Department of Dentistry, D.H.Q Teaching Hospital, Dera Ismail Khan 29050, Pakistan;
| | - Kainat Farooq
- Sardar Begum Dental College, Ghandhara University, Peshawar 25000, Pakistan;
| | - Kenn Foubert
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium;
| | - Luc Pieters
- Natural Products & Food Research and Analysis (NatuRA), Department of Pharmaceutical Sciences, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium;
- Correspondence:
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Koc B, Akyuz L, Cakmak YS, Sargin I, Salaberria AM, Labidi J, Ilk S, Cekic FO, Akata I, Kaya M. Production and characterization of chitosan-fungal extract films. FOOD BIOSCI 2020. [DOI: 10.1016/j.fbio.2020.100545] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Jain A, Parihar D. Antibacterial, biofilm dispersal and antibiofilm potential of alkaloids and flavonoids of Curcuma. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2018. [DOI: 10.1016/j.bcab.2018.09.023] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Rathinam P, Viswanathan P. Anti-virulence potential of eugenol-rich fraction of Syzygium aromaticum against multidrug resistant uropathogens isolated from catheterized patients. AVICENNA JOURNAL OF PHYTOMEDICINE 2018; 8:416-431. [PMID: 30345229 PMCID: PMC6190244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: Considering the emergence of biofilm-associated pathogens with multidrug resistance, the objective(s) of the present study was to evaluate the anti-virulence property of Syzygium aromaticum extracts/fractions against 2 multidrug-resistant catheter isolates. Materials and Methods: Pulverized clove buds were subjected to bioactivity-guided isolation to identify the bioactive extract/fraction(s) with significant anti-virulence property. The clove bud powder was subjected to Soxhlet extraction and all these extracts were investigated in terms of anti-virulent efficacy using initial readout assays. Bioassay-guided partial purification was performed through column and size exclusion chromatography. Detailed testing of the anti-virulence and anti-biofilm activity of sub-minimum inhibitory concentration (sub-MIC) levels of the active fraction, was performed besides the cytotoxicity profiling in RAW 264.7 cells. Results: Gas chromatography-mass spectrometry (GC-MS) analysis of the clove bioactive fraction-2 (CBF-2), done after the bioassay-guided fractionation, revealed eugenol as the major bioactive ingredient present in CBF-2. Reduced mRNA levels of virulence factor genes after CBF-2 (700 μg/ml) treatment correlated well with the respective phenotypic assays (p<0.001). Similarly, CBF-2 (700 μg/ml) treatment exhibited significantly low mRNA levels of quorum sensing (QS) receptor genes compared to their cognate synthase genes (p<0.001). Crystal violet staining and scanning electron micrographs of CBF-2-treated biofilms showed lesser macrocolonies with remarkably simplified architecture. Cytotoxic evaluation of CBF-2 suggested a minute reduction in viability even at the highest tested concentration (1600 μg/ml, p<0.05). Conclusion: The present study indicated that eugenol-rich CBF-2 has potent anti-virulence and anti-biofilm activity against urinary catheter isolates and can be regarded as an alternative for treatment of catheter-associated urinary tract infections.
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Affiliation(s)
- Prasanth Rathinam
- Renal Research Lab, Centre for Bio Medical Research, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, India
| | - Pragasam Viswanathan
- Renal Research Lab, Centre for Bio Medical Research, School of Bio Sciences and Technology, Vellore Institute of Technology, Vellore, India
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Akyuz L, Kaya M, Mujtaba M, Ilk S, Sargin I, Salaberria AM, Labidi J, Cakmak YS, Islek C. Supplementing capsaicin with chitosan-based films enhanced the anti-quorum sensing, antimicrobial, antioxidant, transparency, elasticity and hydrophobicity. Int J Biol Macromol 2018; 115:438-446. [DOI: 10.1016/j.ijbiomac.2018.04.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Revised: 03/22/2018] [Accepted: 04/04/2018] [Indexed: 01/10/2023]
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Li T, Wang D, Liu N, Ma Y, Ding T, Mei Y, Li J. Inhibition of quorum sensing-controlled virulence factors and biofilm formation in Pseudomonas fluorescens by cinnamaldehyde. Int J Food Microbiol 2018; 269:98-106. [PMID: 29421365 DOI: 10.1016/j.ijfoodmicro.2018.01.023] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 01/26/2018] [Accepted: 01/30/2018] [Indexed: 10/18/2022]
Abstract
Pseudomonas fluorescens, an important food spoiling bacteria, uses quorum sensing to control biofilm formation and motility. To date, only a few compounds targeting the LuxR-based quorum sensing system of P. fluorescens have been identified. In the present study, the quorum sensing inhibitory effect of cinnamaldehyde at sublethal concentrations was investigated in terms of inhibition of the extracellular protease, biofilm formation, and swimming and swarming motility. The total volatile basic nitrogen value was also measured to evaluate the effect of cinnamaldehyde on quality preservation of turbot fillets stored at 4 ± 1 °C for 15 days. The results showed that cinnamaldehyde significantly inhibited quorum sensing-dependent factors in P. fluorescens and extended the storage life of turbot. Unexpectedly, cinnamaldehyde did not interfere with production of AHLs (N-acylhomoserine lactones) by P. fluorescens, as shown by measurement of AHL production using GC-MS. Molecular docking analysis revealed that cinnamaldehyde can interact with the LuxR-type protein of P. fluorescens, which could constitute the molecular basis of the quorum sensing inhibition observed. These findings strongly suggest that cinnamaldehyde is a quorum sensing inhibitor with great potential for the preservation of aquatic products to guarantee food safety.
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Affiliation(s)
- Tingting Li
- Key Laboratory of Biotechnology and Bioresources Utilization (Dalian Minzu University), Ministry of Education, Dalian, Liaoning 116029, China.
| | - Dangfeng Wang
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, Liaoning 121013, China
| | - Nan Liu
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, Liaoning 121013, China
| | - Yan Ma
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, Liaoning 121013, China
| | - Ting Ding
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, Liaoning 121013, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Yongchao Mei
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, Liaoning 121013, China
| | - Jianrong Li
- College of Food Science and Technology, Bohai University, National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products, Jinzhou, Liaoning 121013, China.
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Anjum S, Singh S, Benedicte L, Roger P, Panigrahi M, Gupta B. Biomodification Strategies for the Development of Antimicrobial Urinary Catheters: Overview and Advances. GLOBAL CHALLENGES (HOBOKEN, NJ) 2018; 2:1700068. [PMID: 31565299 PMCID: PMC6607219 DOI: 10.1002/gch2.201700068] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/05/2017] [Indexed: 05/27/2023]
Abstract
Microbial burden associated with medical devices poses serious health challenges and is accountable for an increased number of deaths leading to enormous medical costs. Catheter-associated urinary tract infections are the most common hospital-acquired infections with enhanced patient morbidity. Quite often, catheter-associated bacteriuria produces apparent adverse outcomes such as urosepsis and even death. Taking this into account, the methods to modify urinary catheters to control microbial infections with relevance to clinical drug resistance are systematically evaluated in this review. Technologies to restrict biofilm formation at initial stages by using functional nanomaterials are elucidated. The conventional methodology of using single therapeutic intervention for developing an antimicrobial catheter lacks clinically meaningful benefit. Therefore, catheter modification using naturally derived antimicrobials such as essential oils, curcumin, enzymes, and antimicrobial peptides in combination with synthetic antibiotics/nanoantibiotics is likely to exert sufficient inhibitory effect on uropathogens and is extensively discussed. Futuristic efforts in this area are projected here that demand clinical studies to address areas of uncertainty to avoid development of bacterial resistance to the new generation therapy with minimum discomfort to the patients.
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Affiliation(s)
- Sadiya Anjum
- Bioengineering LaboratoryDepartment of Textile TechnologyIndian Institute of TechnologyNew Delhi110016India
| | - Surabhi Singh
- Bioengineering LaboratoryDepartment of Textile TechnologyIndian Institute of TechnologyNew Delhi110016India
| | - Lepoittevin Benedicte
- ICMMO ‐ LG2M ‐ Bât 420Université Paris‐Sud XI, 15rue Georges Clémenceau91405Orsay CedexFrance
| | - Philippe Roger
- ICMMO ‐ LG2M ‐ Bât 420Université Paris‐Sud XI, 15rue Georges Clémenceau91405Orsay CedexFrance
| | - Manoj Panigrahi
- Department of Urology and PathologySikkim Manipal Institute of Medical SciencesGangtokSikkim737101India
| | - Bhuvanesh Gupta
- Bioengineering LaboratoryDepartment of Textile TechnologyIndian Institute of TechnologyNew Delhi110016India
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Phytochemical composition, anti-biofilm and anti-quorum sensing potential of fruit, stem and leaves of Salvadora persica L. methanolic extracts. Microb Pathog 2017; 109:169-176. [DOI: 10.1016/j.micpath.2017.05.036] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/20/2017] [Accepted: 05/23/2017] [Indexed: 11/22/2022]
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Ilk S, Sağlam N, Özgen M, Korkusuz F. Chitosan nanoparticles enhances the anti-quorum sensing activity of kaempferol. Int J Biol Macromol 2016; 94:653-662. [PMID: 27777079 DOI: 10.1016/j.ijbiomac.2016.10.068] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 10/16/2016] [Accepted: 10/20/2016] [Indexed: 01/05/2023]
Abstract
Quorum sensing (QS) is a cell density dependent expression of species in bacteria mediated by compounds called autoinducers (AI). Several processes responsible for successful establishment of bacterial infection are mediated by QS. Inhibition of QS is therefore being considered as a new target for antimicrobial chemotherapy. Flavonoid compounds are strong antioxidant and antimicrobial agents but their applications are limited due to their poor dissolution and bioavailability. Our objective was to investigate the effect of kaempferol loaded chitosan nanoparticles on modulating QS mediated by AI in model bioassay test systems. For this purpose, kaempferol loaded nanoparticles were synthesized and characterized in terms of hydrodynamic diameter, hydrogen bonding, amorphous transformation and antioxidant activity. QS inhibition in time dependent manner of nanoparticles was measured in violacein pigment producing using the biosensor strain Chromobacterium violaceum CV026 mediated by AI known as acylated homoserine lactone (AHL). Our results indicated that the average kaempferol loaded chitosan/TPP nanoparticle size and zeta potential were 192.27±13.6nm and +35mV, respectively. The loading and encapsulation efficiency of kaempferol into chitosan/TPP nanoparticles presented higher values between 78 and 93%. Kaempferol loaded chitosan/TPP nanoparticle during the 30 storage days significantly inhibited the production of violacein pigment in Chromobacterium violaceum CV026. The observation that kaempferol encapsulated chitosan nanoparticles can inhibit QS related processes opens up an exciting new strategy for antimicrobial chemotherapy as stable QS-based anti-biofilm agents.
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Affiliation(s)
- Sedef Ilk
- Faculty of Ayhan Şahenk Agricultural Sciences and Technologies, Ömer Halisdemir University, 51240 Nigde, Turkey.
| | - Necdet Sağlam
- Department of Nanotechnology and Nanomedicine, The Institute of Science and Engineering, Hacettepe University, Beytepe, 06800 Ankara, Turkey
| | - Mustafa Özgen
- Department of Plant Production and Technologies, Faculty of Ayhan Şahenk Agricultural Sciences and Technologies, Ömer Halisdemir University, 51240 Nigde, Turkey
| | - Feza Korkusuz
- Department of Sports Medicine, Faculty of Medicine, Hacettepe University, Beytepe, 06800 Ankara, Turkey
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Venkadesaperumal G, Rucha S, Sundar K, Shetty PH. Anti-quorum sensing activity of spice oil nanoemulsions against food borne pathogens. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.10.044] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Sarkar R, Mondal C, Bera R, Chakraborty S, Barik R, Roy P, Kumar A, Yadav KK, Choudhury J, Chaudhary SK, Samanta SK, Karmakar S, Das S, Mukherjee PK, Mukherjee J, Sen T. Antimicrobial properties of K
alanchoe blossfeldiana: a focus on drug resistance with particular reference to quorum sensing-mediated bacterial biofilm formation. J Pharm Pharmacol 2015; 67:951-62. [PMID: 25827848 DOI: 10.1111/jphp.12397] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2014] [Accepted: 01/06/2015] [Indexed: 02/06/2023]
Abstract
Abstract
Objectives
This study attempts to investigate the antimicrobial properties of Kalanchoe blossfeldiana with a particular reference to quorum sensing (QS)-mediated biofilm formation.
Methods
The methanol extract of K. blossfeldiana leaves (MEKB) was evaluated for antimicrobial properties including QS-controlled production of biofilm (including virulence factor, motility and lactone formation) in Pseudomonas aeruginosa. Methanol extract of K. blossfeldiana was also evaluated for anti-cytokine (tumour necrosis factor-alpha, interleukin-6 and interleukin-1 beta) properties in peripheral blood mononuclear cells (PBMC).
Key findings
Methanol extract of K. blossfeldiana exhibited antimicrobial effect on clinical isolates, as well as standard reference strains. Pseudomonas aeruginosa exposed to MEKB (subminimum inhibitory concentration (MIC)) displayed reduced biofilm formation, whereas supra-MIC produced destruction of preformed biofilms. Methanol extract of K. blossfeldiana reduced the secretion of virulence factors (protease and pyoverdin) along with generation of acyl homoserine lactone (AHL). Confocal laser scanning microscopy images indicate reduction of biofilm thickness. The extract also reduced cytokine formation in lipopolysaccharide-stimulated PBMC.
Conclusions
K alanchoe blossfeldiana was found to interfere with AHL production, which in turn may be responsible for downregulating QS-mediated production of biofilm and virulence. This first report on the antibiofilm and anticytokine properties of this plant may open up new vistas for future exploration of this plant for combating biofilm-related resistant infections.
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Affiliation(s)
- Ratul Sarkar
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
- Department of Pharmaceutical Technology, School of Natural Product Studies, Jadavpur University, Kolkata, West Bengal, India
| | - Chaitali Mondal
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
| | | | - Sumon Chakraborty
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
| | - Rajib Barik
- TCG Life Sciences Ltd, Kolkata, West Bengal, India
| | - Paramita Roy
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
| | - Alekh Kumar
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
| | - Kirendra K Yadav
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
| | - Jayanta Choudhury
- Department of Environmental Studies, School of Environmental Studies, Jadavpur University, Kolkata, West Bengal, India
| | - Sushil K Chaudhary
- Department of Pharmaceutical Technology, School of Natural Product Studies, Jadavpur University, Kolkata, West Bengal, India
| | - Samir K Samanta
- Calcutta Institute of Pharmaceutical Technology, Uluberia, West Bengal, India
| | - Sanmoy Karmakar
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
- Department of Pharmaceutical Technology, School of Natural Product Studies, Jadavpur University, Kolkata, West Bengal, India
| | - Satadal Das
- Microbiology and Immunology Department, B.K. Roy Research Center, Peerless Hospital, Kolkata, West Bengal, India
| | - Pulok K Mukherjee
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
- Department of Pharmaceutical Technology, School of Natural Product Studies, Jadavpur University, Kolkata, West Bengal, India
| | - Joydeep Mukherjee
- Department of Environmental Studies, School of Environmental Studies, Jadavpur University, Kolkata, West Bengal, India
| | - Tuhinadri Sen
- Division of Pharmacology, Jadavpur University, Kolkata, West Bengal, India
- Department of Pharmaceutical Technology, School of Natural Product Studies, Jadavpur University, Kolkata, West Bengal, India
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Packiavathy IASV, Priya S, Pandian SK, Ravi AV. Inhibition of biofilm development of uropathogens by curcumin – An anti-quorum sensing agent from Curcuma longa. Food Chem 2014; 148:453-60. [DOI: 10.1016/j.foodchem.2012.08.002] [Citation(s) in RCA: 235] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2012] [Revised: 07/28/2012] [Accepted: 08/01/2012] [Indexed: 11/25/2022]
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Rudrappa T, Bais HP. Curcumin, a known phenolic from Curcuma longa, attenuates the virulence of Pseudomonas aeruginosa PAO1 in whole plant and animal pathogenicity models. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:1955-62. [PMID: 18284200 DOI: 10.1021/jf072591j] [Citation(s) in RCA: 208] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
The effect of curcumin on the virulence of Pseudomonas aeruginosa (PAO1) using whole plant and animal pathogenicity models was investigated. The effect of curcumin on PAO1 virulence was studied by employing in vitro assays for virulence factor production, Arabidopsis thaliana/Caenorhabditis elegans pathogenicity models, and whole genome microarray analysis. It is shown that the curcumin inhibits PAO1 virulence factors such as biofilm formation, pyocyanin biosynthesis, elastase/protease activity, and acyl homoserine lactone (HSL) production. As a consequence of this, curcumin treatment resulted in the reduced pathogenicity of P. aeruginosa-C. elegans and P. aeruginosa-A. thaliana infection models. In addition, transcriptome analysis of curcumin-treated PAO1 revealed down-regulation of 31 quorum sensing (QS) genes, of which many have already been reported for virulence. The supplementation of HSLs along with the curcumin treatment resulted in increased pathogencity and recovery of higher bacterial titers in a plant pathogenecity model. These data reveal the involvement of curcumin in QS interruption to reduce pathogenicity. Curcumin attenuates PAO1 virulence by down-regulation of virulence factors, QS, and biofilm initiation genes. The effect of curcumin on multiple targets such as virulence, QS, and biofilm initiation makes curcumin a potential supplemental molecule for the treatment of P. aeruginosa infections.
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Affiliation(s)
- Thimmaraju Rudrappa
- Department of Plant and Soil Sciences, University of Delaware, Delaware Biotechnology Institute, Newark, DE 19711, USA
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Fry DE. Multiple Organ Dysfunction Syndrome. Surgery 2008. [DOI: 10.1007/978-0-387-68113-9_31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Abstract
Through a literature review, the epidemiology and pathophysiology, including alterations in inflammation, coagulation, and impaired fibrinolysis that occur in the course of severe sepsis, is presented. Treatment guidelines that are evidence-based and endorsed by 11 professional societies representing multispecialty groups are described. Severe sepsis is common; 750,000 cases are estimated to occur annually in the United States. The mortality rate for severe sepsis still ranges from 30 to 50%, and is as high as 80 to 90% for septic shock and multiple organ dysfunction. Severe sepsis exists along a continuum initiated by a localized infection that triggers a systemic response. A cascade of inflammation and activation of the coagulation system associated with impaired fibrinolysis leads to alterations in microvascular circulation associated with organ dysfunction, severe sepsis, multiple organ dysfunction syndrome, and death. In an attempt to improve care and reduce mortality, the Surviving Sepsis Campaign and The Institute for Healthcare Improvement (IHI) have created two sepsis treatment bundles.
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