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Duque-Sanchez L, Qu Y, Voelcker NH, Thissen H. Tackling catheter-associated urinary tract infections with next-generation antimicrobial technologies. J Biomed Mater Res A 2024; 112:312-335. [PMID: 37881094 DOI: 10.1002/jbm.a.37630] [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: 08/16/2023] [Revised: 09/21/2023] [Accepted: 10/10/2023] [Indexed: 10/27/2023]
Abstract
Urinary catheters and other medical devices associated with the urinary tract such as stents are major contributors to nosocomial urinary tract infections (UTIs) as they provide an access path for pathogens to enter the bladder. Considering that catheter-associated urinary tract infections (CAUTIs) account for approximately 75% of UTIs and that UTIs represent the most common type of healthcare-associated infections, novel anti-infective device technologies are urgently required. The rapid rise of antimicrobial resistance in the context of CAUTIs further highlights the importance of such preventative strategies. In this review, the risk factors for pathogen colonization in the urinary tract are dissected, taking into account the nature and mechanistics of this unique environment. Moreover, the most promising next-generation preventative strategies are critically assessed, focusing in particular on anti-infective surface coatings. Finally, emerging approaches in this field and their likely clinical impact are examined.
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Affiliation(s)
- Lina Duque-Sanchez
- Department of Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, Victoria, Australia
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Yue Qu
- Infection and Immunity Program, Department of Microbiology, Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Victoria, Australia
| | - Nicolas H Voelcker
- Faculty of Pharmacy and Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Melbourne Centre for Nanofabrication, Victorian Node of the Australian National Fabrication Facility, Materials Science and Engineering, Monash University, Clayton, Victoria, Australia
| | - Helmut Thissen
- Department of Manufacturing, Commonwealth Scientific and Industrial Research Organization (CSIRO), Clayton, Victoria, Australia
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Shariff M, Chatterjee M, Morris SD, Paul V, Anil Kumar V, Mohan CG, Paul-Prasanth B, Biswas R. Enhanced inhibition of Pseudomonas aeruginosa virulence factor production and biofilm development by sublethal concentrations of eugenol and phenyllactic acid. Lett Appl Microbiol 2022; 75:1336-1345. [PMID: 35962588 DOI: 10.1111/lam.13803] [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: 06/08/2022] [Revised: 08/01/2022] [Accepted: 08/05/2022] [Indexed: 11/28/2022]
Abstract
Biofilm development in P. aeruginosa is regulated by its quorum sensing (QS) systems. It has three major QS systems: LasI/R, RhlI/R, and PQS/MvfR. Previous studies showed that phenyllactic acid (PLA) binds to RhlR and PqsR and inhibits the Rhl and PQS QS; and eugenol at sublethal concentration inhibits Las and PQS QS systems. Here, we have demonstrated that a combination of sublethal doses of eugenol and PLA enhanced the inhibition of the QS mediated production of the virulence factors and biofilm development of this pathogen. A combination of 50 μM eugenol and 0.3 mM PLA significantly inhibited the pyocyanin production, protease activity, swarming motility and cytotoxic activities of P. aeruginosa strain PAO1, whereas eugenol and PLA when added individually to PAO1 cultures were less effective in inhibiting its virulence factor expression. Biofilm formation of PAO1 was reduced by 32, 19 and 87% on glass surfaces; and 54%, 49% and 93% on catheter surfaces when treated using 50 μM eugenol or 0.3 mM PLA and their combinations, respectively. The in vitro finding in the reduction of biofilm development was further validated in vivo using a catheter associated medaka fish biofilm model. Our results indicate that a combination of QS inhibitors targeting different QS pathways should be selected while designing therapeutic molecules to achieve maximum QS mediated biofilm inhibition and clinical outcome against P. aeruginosa.
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Affiliation(s)
- Mohammad Shariff
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
| | - Maitrayee Chatterjee
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
| | - Sharon D Morris
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
| | - Vinod Paul
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
| | - V Anil Kumar
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
| | - C Gopi Mohan
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
| | - Bindhu Paul-Prasanth
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
| | - Raja Biswas
- Centre for Nanosciences and Molecular medicine, Amrita Vishwa Vidyapeetham, AIMS - Ponekkara, Cochin, Kerala, 682041, India
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Di Pierro F, Sagheddu V, Galletti S, Forti M, Elli M, Bertuccioli A, Gaeta S. Antibacterial Activity of a Fractionated Pistacia lentiscus Oil Against Pharyngeal and Ear Pathogens, Alone or in Combination With Antibiotics. Front Microbiol 2021; 12:686942. [PMID: 34220777 PMCID: PMC8247648 DOI: 10.3389/fmicb.2021.686942] [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: 03/28/2021] [Accepted: 05/24/2021] [Indexed: 12/29/2022] Open
Abstract
Previous studies have clearly demonstrated that the addition of lentisk oil (LO) to streptococcal cultures makes it possible to differentiate Streptococcus spp. into three categories with Streptococcus mitis and Streptococcus intermedius sensitive, Streptococcus pyogenes, Streptococcus agalactiae, and Streptococcus mutans partially sensitive, and Streptococcus salivarius insensitive to the product. We have investigated here whether the winterization of LO, an easy and cheap procedure that removes some of the fatty substances contained within, resulted in a better antimicrobial effect on human pathogens affecting the pharyngeal mucosa and middle ear such as S. pyogenes, S. pneumoniae, Moraxella catarrhalis, and Haemophilus influenzae, without affecting, or minimally affecting, S. salivarius strains, oral probiotics commonly used to reduce oral and middle ear infection recurrence, especially in children. Our results not only demonstrated a stronger antimicrobial action of winterized LO (WLO) on S. pyogenes, compared to what was seen with LO, but also demonstrated a strong antimicrobial action vs. S. pneumoniae and M. catarrhalis and a very limited effect on S. salivarius (strains K12 and M18). Moreover, WLO demonstrated a co-acting action when tested along with the antibiotics amoxicillin (A) and amoxicillin clavulanate (AC), effects clearly visible also on H. influenzae. Our results also showed that at least part of the antimicrobial effect observed was due to the presence of anacardic acids (AAs). Finally, WLO, when tested with human peripheral blood mononuclear cells (h-PBMCs), reduced the release of IL-6 and TNF-α and, in the case of cells stimulated by LPS, the release of IFN-γ. In conclusion, our study highlights an enhanced antimicrobial role for LO when winterized, suggests a co-acting effect of this when given with antibiotics, identifies AAs as possible active ingredients, and proposes a possible anti-inflammatory role for it.
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Affiliation(s)
- Francesco Di Pierro
- Velleja Research, Milan, Italy.,Digestive Endoscopy Unit and Gastroenterology, Fondazione Poliambulanza, Brescia, Italy
| | | | | | - Mara Forti
- AAT-Advanced Analytical Technologies, Piacenza, Italy
| | - Marina Elli
- AAT-Advanced Analytical Technologies, Piacenza, Italy
| | | | - Simone Gaeta
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara, Italy
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Araujo JTCD, Martin-Pastor M, Pérez L, Pinazo A, Sousa FFOD. Development of anacardic acid-loaded zein nanoparticles: Physical chemical characterization, stability and antimicrobial improvement. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115808] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Tarabal VS, Silva FG, Sinisterra RD, Gonçalves D, Silva J, Granjeiro JM, Speziali M, Granjeiro PA. Impact of DMPEI on Biofilm Adhesion on Latex Urinary Catheter. Recent Pat Biotechnol 2021; 15:51-66. [PMID: 33588743 DOI: 10.2174/1872208315666210215084127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 11/25/2020] [Accepted: 12/31/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Microorganisms can migrate from the external environment to the patient's organism through the insertion of catheters. Despite being indispensable medical device, the catheter surface can be colonized by microorganisms and become a starting point for biofilm formation. Therefore, new technologies are being developed in order to modify surfaces to prevent the adhesion and survival of microorganisms. Patents with the use of DMPEI have been filed. OBJECTIVE In the present work, we coated latex catheter surfaces with 2 mg mL-1 DMPEI in different solvents, evaluated the wettability of the surface and the anti- biofilm activity of the coated catheter against Escherichia coli, Staphylococcus aureus, and Candida albicans. METHODS We coated the inner and outer catheter surfaces with 2 mg mL-1 of DMPEI solubilized in butanol, dimethylformamide, and cyclohexanone and the surfaces were analyzed visually. Contact angle measurement allowed the analysis of the wettability of the surfaces. The CFU mL-1 count evaluated E. coli, S. aureus, and C. albicans adhesion onto the control and treated surfaces. RESULTS The contact angle decreased from 50.48º to 46.93º on the inner surface and from 55.83º to 50.91º on the outer surface of latex catheters coated with DMPEI. The catheter coated with DMPEI showed anti-biofilm activity of 83%, 88%, and 93% on the inner surface and 100%, 92%, and 86% on the outer surface for E. coli, S. aureus, and C. albicans, respectively. CONCLUSION Latex catheter coated with DMPEI efficiently impaired the biofilm formation both on the outer and inner surfaces, showing a potential antimicrobial activity along with a high anti-biofilm activity for medical devices.
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Affiliation(s)
- Vinícius S Tarabal
- Campus Centro-Oeste, Federal University of São João del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Flávia G Silva
- Chemistry Department, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Ruben D Sinisterra
- Chemistry Department, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Daniel Gonçalves
- Campus Centro-Oeste, Federal University of São João del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Jose Silva
- Campus Centro-Oeste, Federal University of São João del-Rei, Divinópolis, Minas Gerais, Brazil
| | - Jose M Granjeiro
- National Institute of Metrology, Quality and Technology, Duque de Caxias, Rio de Janeiro, Brazil
| | - Marcelo Speziali
- Chemistry Department, Federal University of Ouro Preto, Minas Gerais, Brazil
| | - Paulo A Granjeiro
- Campus Centro-Oeste, Federal University of São João del-Rei, Divinópolis, Minas Gerais, Brazil
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Bernard C, Juin C, Vitry M, Le VTD, Verdon J, Toullec AS, Imbert C, Girardot M. Can Leaves and Stems of Rubus idaeus L. Handle Candida albicans Biofilms? Pharmaceuticals (Basel) 2020; 13:E477. [PMID: 33353173 PMCID: PMC7766086 DOI: 10.3390/ph13120477] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 12/15/2022] Open
Abstract
Candida albicans is an opportunistic pathogen involved in many infections, especially linked to implanted medical devices. Its ability to form biofilms complicates the treatment of these infections as few molecules are active against sessile C. albicans. The aim of this study was to evaluate the potential of leaves, three-month-old and one-year-old stems of Rubus idaeus L. against C. albicans biofilm growth. Extractions with a polarity gradient were carried out on hydroacetonic extracts and followed by fractionation steps. The obtained extracts and fractions were tested for their anti-biofilm growth activity against C. albicans using XTT method. Compounds of active subfractions were identified by LC-MS. The hexane extracts from leaves and stems were the most active against the fungus with IC50 at 500 and 250 µg/mL. Their bioguided fractionation led to 4 subfractions with IC50 between 62.5 and 125 µg/mL. Most of the components identified in active subfractions were fatty acids and terpenoïds.
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Affiliation(s)
| | | | | | | | | | | | | | - Marion Girardot
- Laboratoire Ecologie et Biologie des Interactions, Université de Poitiers, UMR CNRS 7267, F-86073 Poitiers, France; (C.B.); (C.J.); (M.V.); (V.T.D.L.); (J.V.); (A.-S.T.); (C.I.)
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Catechin isolated from cashew nut shell exhibits antibacterial activity against clinical isolates of MRSA through ROS-mediated oxidative stress. Appl Microbiol Biotechnol 2020; 104:8279-8297. [PMID: 32857200 DOI: 10.1007/s00253-020-10853-z] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 07/09/2020] [Accepted: 08/23/2020] [Indexed: 01/16/2023]
Abstract
Staphylococcus aureus causes severe infections and among all methicillin-resistant S. aureus (MRSA) remains a great challenge in spite of decade research of antibacterial compounds. Even though some synthetic antibiotics have been developed, they are not effective against MRSA, and hence, there is a search for natural, alternative and plant-based antibacterial compound. In this connection, catechin isolated from cashew nut shell was investigated for its antibacterial potential against MRSA. Catechin exhibited zone of inhibition (ZOI) and minimum inhibitory concentration (MIC) in a range of 15.1-19.5 mm and 78.1-156.2 μg/ml, respectively, against ATCC and clinical isolates of MRSA. Among all clinical isolates, clinical isolate-3 exhibited highest sensitivity to catechin. Catechin has arrested the growth of MRSA strains and also caused toxicity by membrane disruption which was illustrated by AO/EB fluorescence staining. Increased nucleic acid leakage (1.58-28.6-fold) and protein leakage (1.40-23.50-fold) was noticed in MRSA due to catechin treatment when compared to methicillin. Bacteria treated with catechin at its MIC showed 1.52-, 1.87- and 1.74-fold increase of ROS production in methicillin susceptible S. aureus (MSSA), MRSA and clinical isolate-3 strains, respectively, as compared to control. Superoxide dismutase (5.31-9.63 U/mg protein) and catalase (1573-3930 U/mg protein) were significantly decreased as compared to control in catechin-treated S. aureus. Thus, catechin exhibited antibacterial activity through oxidative stress by increased production of ROS and decreased antioxidant enzymes. Altogether results suggest that catechin is a promising lead compound with antibacterial potential against MRSA. KEY POINTS: • Catechin was isolated and identified as active compound in cashew nut shell. • Catechin exhibited antimicrobial activity against clinical isolates of MRSA. • Bacterial cell wall damage was caused by catechin in MRSA strains. • Catechin increased the oxidative stress in MRSA by intracellular ROS production.
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8
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Casimero C, Ruddock T, Hegarty C, Barber R, Devine A, Davis J. Minimising Blood Stream Infection: Developing New Materials for Intravascular Catheters. MEDICINES (BASEL, SWITZERLAND) 2020; 7:E49. [PMID: 32858838 PMCID: PMC7554993 DOI: 10.3390/medicines7090049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 08/22/2020] [Accepted: 08/24/2020] [Indexed: 12/19/2022]
Abstract
Catheter related blood stream infection is an ever present hazard for those patients requiring venous access and particularly for those requiring long term medication. The implementation of more rigorous care bundles and greater adherence to aseptic techniques have yielded substantial reductions in infection rates but the latter is still far from acceptable and continues to place a heavy burden on patients and healthcare providers. While advances in engineering design and the arrival of functional materials hold considerable promise for the development of a new generation of catheters, many challenges remain. The aim of this review is to identify the issues that presently impact catheter performance and provide a critical evaluation of the design considerations that are emerging in the pursuit of these new catheter systems.
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Affiliation(s)
| | | | | | | | | | - James Davis
- School of Engineering, Ulster University, Jordanstown BT37 0QB, Northern Ireland, UK; (C.C.); (T.R.); (C.H.); (R.B.); (A.D.)
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Lima RA, de Souza SLX, Lima LA, Batista ALX, de Araújo JTC, Sousa FFO, Rolim JPML, Bandeira TDJPG. Antimicrobial effect of anacardic acid-loaded zein nanoparticles loaded on Streptococcus mutans biofilms. Braz J Microbiol 2020; 51:1623-1630. [PMID: 32562202 DOI: 10.1007/s42770-020-00320-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 06/11/2020] [Indexed: 11/25/2022] Open
Abstract
Bacterial biofilms play a key role in the pathogenesis of major oral diseases. Nanoparticles open new paths for drug delivery in complex structures such as biofilms. This study evaluated the antimicrobial effect of zein nanoparticles containing anacardic acid (AA) extracted from cashew shells of Anacardium occidentale on in vitro Streptococcus mutans biofilm formation and mature biofilms. The minimum inhibitory concentration (MIC), minimum bacterial concentration (MBC), and antibiofilm assays were performed. Streptococcus mutans UA159 biofilms were formed on saliva-coated hydroxyapatite disk for 5 days. To evaluate the preventive effect on biofilm formation, before contact with the inoculum, the disks were immersed once for 2 min in (1) hydroethanolic solution; (2) blank zein nanoparticles; (3) zein nanoparticles containing AA; and (4) 0.12% chlorhexidine gluconate. To determine the effect against mature biofilms, the disks containing 5-day preformed biofilms were further treated using the same procedure. The bacterial viability and dry weight were determined for both assays and used to compare the groups using ANOVA followed by Tukey's test (p < 0.05). Both MIC and MBC for AA-loaded zein nanoparticles were 0.36 μg/mL. Groups 3 and 4 were very effective in inhibiting S. mutans biofilm formation, as no colony-forming units were detected. In contrast, for mature biofilms, no difference in bacterial viability (p = 0.28) or dry weight (p = 0.09) was found between the treatments. Therefore, the AA-based nanoformulation presented very high inhibitory and bactericidal activities against planktonic S. mutans, and the results indicate a strong antiplaque effect. However, the formulation showed no antimicrobial effect on the established biofilm.
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Affiliation(s)
- Ramille Araújo Lima
- Centro Universitário Christus (UNICHRISTUS), Rua João Adolfo Gurgel, 133, Cocó, Fortaleza, CE, 60190-060, Brazil
| | | | - Lais Aragão Lima
- Centro Universitário Christus (UNICHRISTUS), Rua João Adolfo Gurgel, 133, Cocó, Fortaleza, CE, 60190-060, Brazil
| | - Ana Larissa Ximenes Batista
- Centro Universitário Christus (UNICHRISTUS), Rua João Adolfo Gurgel, 133, Cocó, Fortaleza, CE, 60190-060, Brazil
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Salehi B, Gültekin-Özgüven M, Kirkin C, Özçelik B, Morais-Braga MFB, Carneiro JNP, Bezerra CF, da Silva TG, Coutinho HDM, Amina B, Armstrong L, Selamoglu Z, Sevindik M, Yousaf Z, Sharifi-Rad J, Muddathir AM, Devkota HP, Martorell M, Jugran AK, Cho WC, Martins N. Antioxidant, Antimicrobial, and Anticancer Effects of Anacardium Plants: An Ethnopharmacological Perspective. Front Endocrinol (Lausanne) 2020; 11:295. [PMID: 32595597 PMCID: PMC7303264 DOI: 10.3389/fendo.2020.00295] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 04/20/2020] [Indexed: 12/18/2022] Open
Abstract
Anacardium plants have received increasing recognition due to its nutritional and biological properties. A number of secondary metabolites are present in its leaves, fruits, and other parts of the plant. Among the diverse Anacardium plants' bioactive effects, their antioxidant, antimicrobial, and anticancer activities comprise those that have gained more attention. Thus, the present article aims to review the Anacardium plants' biological effects. A special emphasis is also given to their pharmacological and clinical efficacy, which may trigger further studies on their therapeutic properties with clinical trials.
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Affiliation(s)
- Bahare Salehi
- Student Research Committee, School of Medicine, Bam University of Medical Sciences, Bam, Iran
| | - Mine Gültekin-Özgüven
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul, Turkey
| | - Celale Kirkin
- Department of Gastronomy and Culinary Arts, School of Applied Sciences, Özyegin University, Istanbul, Turkey
| | - Beraat Özçelik
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, Istanbul, Turkey
- Bioactive Research & Innovation Food Manufac. Indust. Trade Ltd., Istanbul, Turkey
| | | | - Joara Nalyda Pereira Carneiro
- Laboratory of Applied Mycology of Cariri, Department of Biological Sciences, Cariri Regional University, Crato, Brazil
| | - Camila Fonseca Bezerra
- Laboratory of Planning and Synthesis of Drugs, Department of Antibiotics, Federal University of Pernambuco, Recife, Brazil
| | - Teresinha Gonçalves da Silva
- Laboratory of Planning and Synthesis of Drugs, Department of Antibiotics, Federal University of Pernambuco, Recife, Brazil
| | - Henrique Douglas Melo Coutinho
- Laboratory of Microbiology and Molecular Biology, Department of Biological Chemistry, Regional University of Cariri, Crato, Brazil
| | - Benabdallah Amina
- Department of Agronomy, SAPVESA Laboratory, Nature and Life Sciences Faculty, University Chadli Bendjedid, El-Tarf, Algeria
| | - Lorene Armstrong
- State University of Ponta Grossa, Department of Pharmaceutical Sciences, Ponta Grossa, Paraná, Brazil
| | - Zeliha Selamoglu
- Department of Medical Biology, Faculty of Medicine, Nigde Ömer Halisdemir University, Campus, Nigde, Turkey
| | - Mustafa Sevindik
- Osmaniye Korkut Ata University, Bahçe Vocational School, Department of Food Processing, Osmaniye, Turkey
| | - Zubaida Yousaf
- Department of Botany, Lahore College for Women University, Lahore, Pakistan
| | - Javad Sharifi-Rad
- Phytochemistry Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Mahmoud Muddathir
- Department of Horticulture, Faculty of Agriculture, University of Khartoum, Shambat, Sudan
| | - Hari Prasad Devkota
- School of Pharmacy, Kumamoto University, Kumamoto, Japan
- Program for Leading Graduate Schools, Health Life Science: Interdisciplinary and Glocal Oriented (HIGO) Program, Kumamoto University, Kumamoto, Japan
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, Centre for Healthy Living, University of Concepción, Concepción, Chile
- Unidad de Desarrollo Tecnológico, Universidad de Concepción UDT, Concepción, Chile
| | - Arun Kumar Jugran
- G. B. Pant National Institute of Himalayan Environment and Sustainable Development, Garhwal Regional Centre, Uttarakhand, India
| | - William C. Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, China
| | - Natália Martins
- Faculty of Medicine, University of Porto, Alameda Prof. Hernâni Monteiro, Porto, Portugal
- Institute for Research and Innovation in Health (i3S), University of Porto, Porto, Portugal
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11
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ROS Mediated Cytotoxicity Exhibited by Cashewnut Shell Extract Coated AgNPs Against Staphylococcus aureus Isolated from Milk. J CLUST SCI 2020. [DOI: 10.1007/s10876-020-01812-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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12
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Abstract
Nuts are fruits composed of two parts: an inedible hard shell and an edible seed. Nuts are known as an energy-dense and nutrient-rich food source. In general, nuts are recognized as a good source of fat, fiber, and protein. Nuts are extremely beneficial parts of any diet since their consumption may lower risk for some diseases, such as cardiovascular diseases and cancer. They are acknowledged for their low glycemic index owning to high unsaturated fat and protein content and relatively low carbohydrate content. They have been shown to increase cognitive function as well.
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Affiliation(s)
- Sawsan G Mohammed
- Qatar Research Leadership Program (QRLP), Qatar Foundation, Doha, Qatar.
| | - M Walid Qoronfleh
- Research & Policy Department, World Innovation Summit for Health (WISH), Qatar Foundation, Doha, Qatar.
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13
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Memariani H, Memariani M, Ghasemian A. An overview on anti-biofilm properties of quercetin against bacterial pathogens. World J Microbiol Biotechnol 2019; 35:143. [PMID: 31493142 DOI: 10.1007/s11274-019-2719-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 08/24/2019] [Indexed: 01/22/2023]
Abstract
Bacterial biofilms are multicellular aggregates enclosed in a self-created biopolymer matrix. Biofilm-producing bacteria have become a great public health problem worldwide because biofilms enable these microorganisms to evade several clearance mechanisms produced by host and synthetic sources. Over the past years, different flavonoids including quercetin have engrossed considerable interest among researchers owing to their potential anti-biofilm properties. To our knowledge, there is no review regarding effects of quercetin towards bacterial biofilms, prompting us to summarize experimental evidence on its anti-biofilm properties. Quercetin inhibits biofilm development by a diverse array of bacterial pathogens such as Enterococcus faecalis, Staphylococcus aureus, Streptococcus mutans, Escherichia coli, and Pseudomonas aeruginosa. Prevention of bacterial adhesion, suppression of quorum-sensing pathways, disruption or alteration of plasma membrane, inhibition of efflux pumps, and blocking nucleic acid synthesis have been documented as major anti-biofilm mechanisms of quercetin. Overall, anti-biofilm activity of quercetin can open up new horizons in a wide range of biomedical areas, from food industry to medicine.
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Affiliation(s)
- Hamed Memariani
- Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mojtaba Memariani
- Skin Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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14
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Cattò C, Cappitelli F. Testing Anti-Biofilm Polymeric Surfaces: Where to Start? Int J Mol Sci 2019; 20:E3794. [PMID: 31382580 PMCID: PMC6696330 DOI: 10.3390/ijms20153794] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Accepted: 08/02/2019] [Indexed: 12/11/2022] Open
Abstract
Present day awareness of biofilm colonization on polymeric surfaces has prompted the scientific community to develop an ever-increasing number of new materials with anti-biofilm features. However, compared to the large amount of work put into discovering potent biofilm inhibitors, only a small number of papers deal with their validation, a critical step in the translation of research into practical applications. This is due to the lack of standardized testing methods and/or of well-controlled in vivo studies that show biofilm prevention on polymeric surfaces; furthermore, there has been little correlation with the reduced incidence of material deterioration. Here an overview of the most common methods for studying biofilms and for testing the anti-biofilm properties of new surfaces is provided.
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Affiliation(s)
- Cristina Cattò
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy
| | - Francesca Cappitelli
- Department of Food Environmental and Nutritional Sciences, Università degli Studi di Milano, via Celoria 2, 20133 Milano, Italy.
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