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Elmaghrabi MM, Alharbi NS, Alobaidi AS, Abdulmanea AA, Kadaikunnan S, Ramadan AA, Khaled JM. Iron-tannic acid nano-coating: A promising treatment approach for enhancing Lactococcus lactis antibiotic resistance. Saudi Pharm J 2024; 32:102052. [PMID: 38590610 PMCID: PMC10999874 DOI: 10.1016/j.jsps.2024.102052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Accepted: 03/26/2024] [Indexed: 04/10/2024] Open
Abstract
The objective of this study was to explore a novel methodology for the synthesis of nanocoated probiotics following their collection and cultivation under optimized conditions, in light of their significant contribution to human health. Probiotics are instrumental in sustaining immune health by modulating the gastrointestinal microbiota and facilitating digestion. However, the equilibrium they maintain can be adversely affected by antibiotic treatments. It is critical to investigate the vulnerability of probiotics to antibiotics, considering the potential implications. This research aimed to assess whether nanoparticle coating could augment the probiotics' resistance to antibiotic influence. A strain of Lactococcus lactis (L. lactis) was isolated, cultured, and comprehensively characterized utilizing state-of-the-art methodologies, including the VITEK® 2 compact system, VITEK® MS, and 16S rRNA gene sequencing. The nanoparticle coating was performed using iron (III) chloride hexahydrate and tannic acid, followed by an evaluation of the probiotics' resistance to a range of antibiotics. The analysis through scanning electron microscopy (SEM) and atomic force microscopy (AFM) demonstrated a partial nanoparticle coating of the probiotics, which was further supported by UV/Vis spectroscopy findings, suggesting enhanced resistance to standard antibiotics. The results revealed that this strain possesses a unique protein profile and is genetically similar to strains identified in various other countries. Moreover, nano-encapsulation notably increased the strain's resistance to a spectrum of standard antibiotics, including Benzylpenicillin, Teicoplanin, Oxacillin, Vancomycin, Tetracycline, Rifampicin, Erythromycin, and Clindamycin. These findings imply that nanoparticle-coated probiotics may effectively counteract the detrimental effects of extended antibiotic therapy, thus preserving their viability and beneficial influence on gastrointestinal health.
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Affiliation(s)
- Marwa M. Elmaghrabi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Naiyf S. Alharbi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Ahmed S. Alobaidi
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Adel A. Abdulmanea
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Shine Kadaikunnan
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | | | - Jamal M. Khaled
- Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
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Khazaei Monfared Y, Mahmoudian M, Hoti G, Caldera F, López Nicolás JM, Zakeri-Milani P, Matencio A, Trotta F. Cyclodextrin-Based Nanosponges as Perse Antimicrobial Agents Increase the Activity of Natural Antimicrobial Peptide Nisin. Pharmaceutics 2022; 14:685. [PMID: 35336058 PMCID: PMC8950107 DOI: 10.3390/pharmaceutics14030685] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2022] [Revised: 03/11/2022] [Accepted: 03/17/2022] [Indexed: 12/12/2022] Open
Abstract
At present, antibiotic resistance is considered a real problem. Therefore, for decades scientists have been looking for novel strategies to treat bacterial infections. Nisin Z, an antimicrobial peptide (AMP), can be considered an option, but its usage is mainly limited by the poor stability and short duration of its antimicrobial activity. In this context, cyclodextrin (CD)-based nanosponges (NSs), synthesized using carbonyldiimidazole (CDI) and pyromellitic dianhydride (PMDA), were chosen for nisin Z loading. To determine the minimum inhibitory of nisin Z loaded on CD-NS formulations, agar well diffusion plates were used. Then, the bactericide concentrations of nisin Z loaded on CD-NS formulations were determined against Gram-positive (Staphylococcus aureus) and -negative (Escherichia coli) bacteria, using microdilution brain heart infusion (BHI) and tetrazolium salt 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT). The minimum and bactericide inhibitory values of the nisin complex with NSs were potentially decreased against both bacteria, compared with the nisin-free sample, while the nisin complex with β-CD showed lower antibacterial activity. The antimicrobial effect was also demonstrated by free NSs. Furthermore, the total viable counts (TVCs) antibacterial experiment indicated that the combination of nisin Z in both PMDA and CDI β-CD-based NSs, especially CDI, can provide a better conservative effect on cooked chicken meat. Generally, the present study outcomes suggest that the cross-linked β-CD-based NSs can present their own antimicrobial potency or serve as promising carriers to deliver and enhance the antibacterial action of nisin Z.
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Affiliation(s)
- Yousef Khazaei Monfared
- Dipartimento Di Chimica, Università di Torino, Via P. Giuria 7, 10125 Torino, Italy; (Y.K.M.); (G.H.); (F.C.)
| | - Mohammad Mahmoudian
- Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 5166414766, Iran;
| | - Gjylije Hoti
- Dipartimento Di Chimica, Università di Torino, Via P. Giuria 7, 10125 Torino, Italy; (Y.K.M.); (G.H.); (F.C.)
| | - Fabrizio Caldera
- Dipartimento Di Chimica, Università di Torino, Via P. Giuria 7, 10125 Torino, Italy; (Y.K.M.); (G.H.); (F.C.)
| | - José Manuel López Nicolás
- Unidad Docente de Biología, Departamento de Bioquímica y Biología Molecular A, Facultad de Veterinaria, Regional Campus of International Excellence “Campus Mare Nostrum”, Universidad de Murcia, 30100 Murcia, Spain;
| | - Parvin Zakeri-Milani
- Liver and Gastrointestinal Diseases Research Centre, Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz 5166414766, Iran
| | - Adrián Matencio
- Dipartimento Di Chimica, Università di Torino, Via P. Giuria 7, 10125 Torino, Italy; (Y.K.M.); (G.H.); (F.C.)
| | - Francesco Trotta
- Dipartimento Di Chimica, Università di Torino, Via P. Giuria 7, 10125 Torino, Italy; (Y.K.M.); (G.H.); (F.C.)
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3
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Nazeer N, Simmons JR, Rainey JK, Rodriguez-Lecompte JC, Ahmed M. Antibacterial activities of physiologically stable, self-assembled peptide nanoparticles. J Mater Chem B 2021; 9:9041-9054. [PMID: 34664611 DOI: 10.1039/d1tb01864g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, we report that host defense protein-derived ten amino acid long disulfide-linked peptides self-assemble in the form of β-sheets and β-turns, and exhibit concentration-dependent self-assembly in the form of nanospheres, termed as disulfide linked nanospheres (DSNs). As expected, bare DSNs are prone to aggregation in ionic solutions and in the presence of serum proteins. To yield physiologically stable self-assembled peptide-based materials, DSNs are stabilized in the form of supramolecular assemblies using β-cyclodextrins (β-CD) and fucoidan, as delivery carriers. The inclusion complexes of DSNs with β-CD (β-CD-DSN) and electrostatic complexation of fucoidan with DSNs (FC-DSN) stabilizes the secondary structure of DSNs. Comparison of β-CD-DSNs with FC-DSNs reveals that inclusion complexes of DSNs formed in the presence of β-CD are highly stable under physiological conditions, show high cellular uptake, exhibit bacterial flocculation, and enhance antibacterial efficacies of DSNs in a range of Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- Nauman Nazeer
- Department of Chemistry, University of Prince Edward Island, Charlottetown, Prince Edward Island, C1A 4P3, Canada.
| | - Jeffrey R Simmons
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Jan K Rainey
- Department of Biochemistry & Molecular Biology, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.,Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada.,School of Biomedical Engineering, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada
| | - Juan Carlos Rodriguez-Lecompte
- Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Prince Edward Island, C1A 4P3, Canada
| | - Marya Ahmed
- Department of Chemistry, University of Prince Edward Island, Charlottetown, Prince Edward Island, C1A 4P3, Canada. .,Faculty of Sustainable Design Engineering, University of Prince Edward Island, Charlottetown, Prince Edward Island, C1A 4P3, Canada
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Yang X, Ye W, Qi Y, Ying Y, Xia Z. Overcoming Multidrug Resistance in Bacteria Through Antibiotics Delivery in Surface-Engineered Nano-Cargos: Recent Developments for Future Nano-Antibiotics. Front Bioeng Biotechnol 2021; 9:696514. [PMID: 34307323 PMCID: PMC8297506 DOI: 10.3389/fbioe.2021.696514] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/09/2021] [Indexed: 11/13/2022] Open
Abstract
In the recent few decades, the increase in multidrug-resistant (MDR) bacteria has reached an alarming rate and caused serious health problems. The incidence of infections due to MDR bacteria has been accompanied by morbidity and mortality; therefore, tackling bacterial resistance has become an urgent and unmet challenge to be properly addressed. The field of nanomedicine has the potential to design and develop efficient antimicrobials for MDR bacteria using its innovative and alternative approaches. The uniquely constructed nano-sized antimicrobials have a predominance over traditional antibiotics because their small size helps them in better interaction with bacterial cells. Moreover, surface engineering of nanocarriers offers significant advantages of targeting and modulating various resistance mechanisms, thus owe superior qualities for overcoming bacterial resistance. This review covers different mechanisms of antibiotic resistance, application of nanocarrier systems in drug delivery, functionalization of nanocarriers, application of functionalized nanocarriers for overcoming bacterial resistance, possible limitations of nanocarrier-based approach for antibacterial delivery, and future of surface-functionalized antimicrobial delivery systems.
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Affiliation(s)
- Xinfu Yang
- Department of Pharmacy, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Wenxin Ye
- Department of Urology, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Yajun Qi
- Department of Pharmacy, The Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, China.,Institute of Cancer and Basic Medicine (IBMC), Chinese Academy of Sciences, Hangzhou, China
| | - Yin Ying
- Department of Pharmacy, Tongde Hospital of Zhejiang Province, Hangzhou, China
| | - Zhongni Xia
- Department of Pharmacy, Tongde Hospital of Zhejiang Province, Hangzhou, China.,College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, China
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Guimarães PPG, de Menezes AC, Teixeira KIR, Denadai ÂML, Fills RA, Cortés ME, Sinisterra RD. Enhanced efficacy against bacterial biofilms via host:guest cyclodextrin‐doxycycline inclusion complexes. J INCL PHENOM MACRO 2021. [DOI: 10.1007/s10847-020-01041-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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6
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Sampaio ADG, Gontijo AVL, Lima GDMG, de Oliveira MAC, Lepesqueur LSS, Koga-Ito CY. Ellagic Acid-Cyclodextrin Complexes for the Treatment of Oral Candidiasis. Molecules 2021; 26:505. [PMID: 33477918 PMCID: PMC7833435 DOI: 10.3390/molecules26020505] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/12/2021] [Accepted: 01/14/2021] [Indexed: 12/14/2022] Open
Abstract
The increase in the prevalence of fungal infections worldwide and the rise in the occurrence of antifungal resistance suggest that new research to discover antifungal molecules is needed. The aim of this study was to evaluate the potential use of ellagic acid-cyclodextrin complexes (EA/HP-β-CD) for the treatment of oral candidiasis. First, the effect of EA/HP-β-CD on C. albicans planktonic cells and biofilms was evaluated. Then, the cytotoxicity of the effective concentration was studied to ensure safety of in vivo testing. Finally, the in vivo effectiveness was determined by using a murine model of induced oral candidiasis. Data was statistically analyzed. The minimal inhibitory concentration of EA/HP-β-CD was 25 µg/mL and a concentration of 10 times MIC (250 µg/mL) showed an inhibitory effect on C. albicans 48 h-biofilms. The complex at concentration 250 µg/mL was classified as slightly cytotoxic. In vivo experiments showed a reduction in fungal epithelial invasion after treatment with EA/HP-β-CD for 24 h and 96 h when compared to the negative control. In conclusion, the results demonstrated that EA/HP-β-CD has antifungal and anti-inflammatory effects, reducing the invasive capacity of C. albicans, which suggests that EA/HP-β-CD may be a promising alternative for the treatment of oral candidiasis.
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Affiliation(s)
- Aline da Graça Sampaio
- Oral Biopathology Graduate Program, São José dos Campos Institute of Science & Technology, São Paulo State University, UNESP, São Paulo 12245-000, Brazil; (A.d.G.S.); (A.V.L.G.); (G.d.M.G.L.); (M.A.C.d.O.); (L.S.S.L.)
| | - Aline Vidal Lacerda Gontijo
- Oral Biopathology Graduate Program, São José dos Campos Institute of Science & Technology, São Paulo State University, UNESP, São Paulo 12245-000, Brazil; (A.d.G.S.); (A.V.L.G.); (G.d.M.G.L.); (M.A.C.d.O.); (L.S.S.L.)
| | - Gabriela de Morais Gouvêa Lima
- Oral Biopathology Graduate Program, São José dos Campos Institute of Science & Technology, São Paulo State University, UNESP, São Paulo 12245-000, Brazil; (A.d.G.S.); (A.V.L.G.); (G.d.M.G.L.); (M.A.C.d.O.); (L.S.S.L.)
| | - Maria Alcionéia Carvalho de Oliveira
- Oral Biopathology Graduate Program, São José dos Campos Institute of Science & Technology, São Paulo State University, UNESP, São Paulo 12245-000, Brazil; (A.d.G.S.); (A.V.L.G.); (G.d.M.G.L.); (M.A.C.d.O.); (L.S.S.L.)
| | - Laura Soares Souto Lepesqueur
- Oral Biopathology Graduate Program, São José dos Campos Institute of Science & Technology, São Paulo State University, UNESP, São Paulo 12245-000, Brazil; (A.d.G.S.); (A.V.L.G.); (G.d.M.G.L.); (M.A.C.d.O.); (L.S.S.L.)
- School of Dentistry, Santo Amaro University, São Paulo 04743-030, Brazil
| | - Cristiane Yumi Koga-Ito
- Oral Biopathology Graduate Program, São José dos Campos Institute of Science & Technology, São Paulo State University, UNESP, São Paulo 12245-000, Brazil; (A.d.G.S.); (A.V.L.G.); (G.d.M.G.L.); (M.A.C.d.O.); (L.S.S.L.)
- Department of Environment Engineering, São José dos Campos Institute of Science & Technology, São Paulo State University, UNESP, São Paulo 12247-016, Brazil
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Vandera KKA, Picconi P, Valero M, González-Gaitano G, Woods A, Zain NMM, Bruce KD, Clifton LA, Skoda MWA, Rahman KM, Harvey RD, Dreiss CA. Antibiotic-in-Cyclodextrin-in-Liposomes: Formulation Development and Interactions with Model Bacterial Membranes. Mol Pharm 2020; 17:2354-2369. [DOI: 10.1021/acs.molpharmaceut.0c00096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kalliopi-Kelli A. Vandera
- School of Cancer & Pharmaceutical Science, Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, U.K
| | - Pietro Picconi
- School of Cancer & Pharmaceutical Science, Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, U.K
| | - Margarita Valero
- Department of Physical Chemistry, University of Salamanca, ES E-37007 Salamanca, Spain
| | | | - Arcadia Woods
- School of Cancer & Pharmaceutical Science, Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, U.K
| | - Nur Masirah M. Zain
- School of Cancer & Pharmaceutical Science, Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, U.K
| | - Kenneth D. Bruce
- School of Cancer & Pharmaceutical Science, Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, U.K
| | - Luke A. Clifton
- Rutherford Appleton Laboratory, ISIS, 1-27, R3, Harwell Campus, Didcot OX11 0QX, U.K
| | | | - Khondaker Miraz Rahman
- School of Cancer & Pharmaceutical Science, Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, U.K
| | - Richard D. Harvey
- Department of Pharmaceutical Chemistry, University of Vienna, Althanstraße 14, Vienna, Austria
| | - Cécile A. Dreiss
- School of Cancer & Pharmaceutical Science, Institute of Pharmaceutical Science, King’s College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, U.K
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8
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Cyclodextrin-membrane interaction in drug delivery and membrane structure maintenance. Int J Pharm 2019; 564:59-76. [DOI: 10.1016/j.ijpharm.2019.03.063] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 01/14/2023]
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9
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Aulestia-Viera PV, Gontijo SML, Gomes ADM, Sinisterra RD, Rocha RG, Cortés ME, Dos Santos MF, Borsatti MA. Guaiacol/β-cyclodextrin for rapid healing of dry socket: antibacterial activity, cytotoxicity, and bone repair-an animal study. Oral Maxillofac Surg 2019; 23:53-61. [PMID: 30737608 DOI: 10.1007/s10006-019-00747-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2018] [Accepted: 01/29/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE Dry socket (DS) is one the most common and symptomatic post-extraction complications; however, no consensus on its treatment has been reached. This study aimed to develop a novel dressing material for DS containing the phenolic agent guaiacol and evaluate its biological properties. METHODS An inclusion complex of guaiacol and β-cyclodextrin (Gu/βcd) was prepared by freeze-drying. Its antibacterial activity over six oral bacteria was analyzed using the microdilution method, and its cytotoxicity in osteoblasts was assessed with the MTT assay. The alveolar healing process induced by Gu/βcd was evaluated histologically after the treatment of DS in rats. RESULTS βcd complexation potentiated Gu's antibacterial effect and reduced its cytotoxicity in osteoblasts. Bone trabeculae were formed in the alveolar apices of rats treated with Gu/βcd by day 7. On day 14, woven bone occupied the apical and middle thirds of the sockets; on day 21, the entire alveolus was filled by newly formed bone, which was in a more advanced stage of repair than the positive control (Alvogyl™). CONCLUSION The improvement in Gu's biological properties in vitro and the rapid alveolar repair in comparison with Alvogyl™ in vivo demonstrated the benefits of the Gu/βcd complex as a future alternative for the treatment of DS.
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Affiliation(s)
- Patricia Verónica Aulestia-Viera
- Department of Stomatology, Faculty of Dentistry, University of São Paulo, Av. Professor Lineu Prestes, 2227, Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Sávio Morato Lacerda Gontijo
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - Alinne Damásia Martins Gomes
- Department of Chemistry, Exact Sciences Institute, Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - Rubén Dario Sinisterra
- Department of Chemistry, Exact Sciences Institute, Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - Rodney Garcia Rocha
- Department of Stomatology, Faculty of Dentistry, University of São Paulo, Av. Professor Lineu Prestes, 2227, Cidade Universitária, São Paulo, SP, 05508-000, Brazil
| | - Maria Esperanza Cortés
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais, Av. Presidente Antônio Carlos, 6627, Belo Horizonte, MG, Brazil
| | - Marinilce Fagundes Dos Santos
- Department of Cell and Developmental Biology, Institute of Biomedical Sciences, University of São Paulo, Av. Professor Lineu Prestes, 1524, Cidade Universitária, São Paulo, SP, Brazil
| | - Maria Aparecida Borsatti
- Department of Stomatology, Faculty of Dentistry, University of São Paulo, Av. Professor Lineu Prestes, 2227, Cidade Universitária, São Paulo, SP, 05508-000, Brazil.
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Santos RS, Figueiredo C, Azevedo NF, Braeckmans K, De Smedt SC. Nanomaterials and molecular transporters to overcome the bacterial envelope barrier: Towards advanced delivery of antibiotics. Adv Drug Deliv Rev 2018; 136-137:28-48. [PMID: 29248479 DOI: 10.1016/j.addr.2017.12.010] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2017] [Revised: 12/10/2017] [Accepted: 12/12/2017] [Indexed: 01/13/2023]
Abstract
With the dramatic consequences of bacterial resistance to antibiotics, nanomaterials and molecular transporters have started to be investigated as alternative antibacterials or anti-infective carrier systems to improve the internalization of bactericidal drugs. However, the capability of nanomaterials/molecular transporters to overcome the bacterial cell envelope is poorly understood. It is critical to consider the sophisticated architecture of bacterial envelopes and reflect how nanomaterials/molecular transporters can interact with these envelopes, being the major aim of this review. The first part of this manuscript overviews the permeability of bacterial envelopes and how it limits the internalization of common antibiotic and novel oligonucleotide drugs. Subsequently we critically discuss the mechanisms that allow nanomaterials/molecular transporters to overcome the bacterial envelopes, focusing on the most promising ones to this end - siderophores, cyclodextrins, metal nanoparticles, antimicrobial/cell-penetrating peptides and fusogenic liposomes. This review may stimulate drug delivery and microbiology scientists in designing effective nanomaterials/molecular transporters against bacterial infections.
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11
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Mularski A, Separovic F. Atomic Force Microscopy Studies of the Interaction of Antimicrobial Peptides with Bacterial Cells. Aust J Chem 2017. [DOI: 10.1071/ch16425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Antimicrobial peptides (AMPs) are promising therapeutic alternatives to conventional antibiotics. Many AMPs are membrane-active but their mode of action in killing bacteria or in inhibiting their growth remains elusive. Recent studies indicate the mechanism of action depends on peptide structure and lipid components of the bacterial cell membrane. Owing to the complexity of working with living cells, most of these studies have been conducted with synthetic membrane systems, which neglect the possible role of bacterial surface structures in these interactions. In recent years, atomic force microscopy has been utilized to study a diverse range of biological systems under non-destructive, physiologically relevant conditions that yield in situ biophysical measurements of living cells. This approach has been applied to the study of AMP interaction with bacterial cells, generating data that describe how the peptides modulate various biophysical behaviours of individual bacteria, including the turgor pressure, cell wall elasticity, bacterial capsule thickness, and organization of bacterial adhesins.
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Cruz Olivo EA, Santos D, de Lima ME, Dos Santos VL, Sinisterra RD, Cortés ME. Antibacterial Effect of Synthetic Peptide LyeTxI and LyeTxI/β-Cyclodextrin Association Compound Against Planktonic and Multispecies Biofilms of Periodontal Pathogens. J Periodontol 2016; 88:e88-e96. [PMID: 27989223 DOI: 10.1902/jop.2016.160438] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND Antimicrobial peptides (AMPs) have shown rapid and potent effect against planktonic bacteria. However, control of periodontopathic biofilms is a challenge even for AMPs. Thus, the present study evaluates in vitro antimicrobial activity of synthetic peptide LyeTxI and association compound LyeTxI/β-cyclodextrin (βCD) against multispecies biofilms. METHODS Sensibility to LyeTxI and LyeTxI/βCD was determined for planktonic Gram-negative periodontopathogens. Time-kill kinetic assay was performed at minimum inhibitory concentrations (MICs) in all planktonic strains. Multispecies biofilms were grown on pegs using a biofilm device and studied by scanning electron microscopy at 2, 5, and 10 days. Minimal biofilm eradication concentration (MBEC) was determined for 2- and 4-day multispecies biofilms. Metabolic activity of biofilms was determined by fluorometry study. RESULTS Biofilms showed reproducible cell density on pegs of the biofilm device. LyeTxI and LyeTxI/βCD were active against all strains tested at concentrations ≤62.5 μg/mL. Kinetic assays showed rapid bactericidal effect of LyeTxI against all periodontopathogens. MBECs of LyeTxI and LyeTxI/βCD against multispecies 2-day biofilms were two-fold higher than MICs of cells shed from biofilms. LyeTxI was able to reduce multispecies 2-day metabolic activity by 90%. Multispecies 4-day biofilms were tolerant to all agents tested. CONCLUSIONS LyeTxI and LyeTxI/βCD are active against periodontopathic bacteria, showing rapid bactericidal effect and may be used to prevent biofilm development. In the future, AMPs could be therapeutic tools for treatment of periodontitis.
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Affiliation(s)
- Edison Andrés Cruz Olivo
- Department of Periodontology, Faculty of Dentistry, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Daniel Santos
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais
| | - Maria Elena de Lima
- Department of Biochemistry and Immunology, Institute of Biological Sciences, Federal University of Minas Gerais
| | - Vera Lúcia Dos Santos
- Department of Microbiology, Institute of Biological Sciences, Federal University of Minas Gerais
| | - Rubén Dario Sinisterra
- Department of Inorganic Chemistry, Exacts Science Institute, Federal University of Minas Gerais
| | - María Esperanza Cortés
- Department of Restorative Dentistry, Faculty of Dentistry, Federal University of Minas Gerais
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13
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Teixeira KIR, Denadai AML, Sinisterra RD, Cortés ME. Cyclodextrin modulates the cytotoxic effects of chlorhexidine on microrganisms and cellsin vitro. Drug Deliv 2014; 22:444-53. [DOI: 10.3109/10717544.2013.879679] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Consuegra J, de Lima ME, Santos D, Sinisterra RD, Cortés ME. Peptides: β-cyclodextrin inclusion compounds as highly effective antimicrobial and anti-epithelial proliferation agents. J Periodontol 2013; 84:1858-68. [PMID: 23510146 DOI: 10.1902/jop.2013.120679] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND The use of antimicrobial peptides (AMPs) as therapeutic agents for periodontal infections has great advantages, such as broad spectrum of action, low toxicity, and limited bacterial resistance. However, their practical use is limited because of the large amount of peptide required to exercise the microbicidal function. METHODS LyeTxI, LL37f, and KR12 cationic peptides were prepared with β-cyclodextrin (βCD) at 1:1 molar ratios. The susceptibility of Porphyromonas gingivalis, Aggregatibacter actinomycetemcomitans, and Fusobacterium nucleatum were assessed in anaerobic conditions. Cytotoxicity assays were performed using osteoblast and Caco-2 epithelial cells, and hemolytic activity was assessed on rabbit erythrocytes at an absorbance of 414 nm. Parameters of surface roughness and electrical charge were established by atomic force microscopy and zeta (ζ) potential, respectively. RESULTS AMP/βCDs drastically decreased the peptide concentration required for activity against the bacteria tested. Moreover, AMPs associated with βCD were able to modify cell-surface parameters, such as roughness and ζ potential. On the other hand, AMP/βCD did not alter the degree of hemolysis induced by the pure AMPs. The effective concentration at half-maximum values of the peptides and compounds on osteoblasts were greater than the concentrations required to achieve inhibition of bacterial growth in all the species tested. AMP/βCDs inhibited the proliferation of Caco-2 epithelial cells in a more efficient manner than AMPs alone. CONCLUSION AMP/βCD compounds more effectively inhibit periodontopathogenic bacteria than AMPs alone, with the additional ability of inhibiting the proliferation of epithelial cells at concentrations that are non-cytotoxic for osteoblasts and erythrocytes.
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Affiliation(s)
- Jessika Consuegra
- Department of Physiology and Biophysics, Biologic Science Institute (ICB), Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
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