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Saifi S, Ashraf A, Hasan GM, Shamsi A, Hassan MI. Insights into the preventive actions of natural compounds against Klebsiella pneumoniae infections and drug resistance. Fitoterapia 2024; 173:105811. [PMID: 38168570 DOI: 10.1016/j.fitote.2023.105811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/27/2023] [Accepted: 12/29/2023] [Indexed: 01/05/2024]
Abstract
Klebsiella pneumoniae is a type of Gram-negative bacteria that causes a variety of infections, including pneumonia, bloodstream infections, wound infections, and meningitis. The treatment of K. pneumoniae infection depends on the type of infection and the severity of the symptoms. Antibiotics are generally used to treat K. pneumoniae infections. However, some strains of K. pneumoniae have become resistant to antibiotics. This comprehensive review examines the potential of natural compounds as effective strategies against K. pneumonia infections. The alarming rise in antibiotic resistance underscores the urgent need for alternative therapies. This article represents current research on the effects of diverse natural compounds, highlighting their anti-microbial and antibiofilm properties against K. pneumonia. Notably, compounds such as andrographolide, artemisinin, baicalin, berberine, curcumin, epigallocatechin gallate, eugenol, mangiferin, piperine, quercetin, resveratrol, and thymol have been extensively investigated. These compounds exhibit multifaceted mechanisms, including disruption of bacterial biofilms, interference with virulence factors, and augmentation of antibiotic effectiveness. Mechanistic insights into their actions include membrane perturbation, oxidative stress induction, and altered gene expression. While promising, challenges such as limited bioavailability and varied efficacy across bacterial strains are addressed. This review further discusses the potential of natural compounds as better alternatives in combating K. pneumonia infection and emphasizes the need for continued research to harness their full therapeutic potential. As antibiotic resistance persists, these natural compounds offer a promising avenue in the fight against K. pneumonia and other multidrug-resistant pathogens.
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Affiliation(s)
- Sana Saifi
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi 110062, India
| | - Anam Ashraf
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India
| | - Gulam Mustafa Hasan
- Department of Biochemistry, College of Medicine, Prince Sattam Bin Abdulaziz University, P.O. Box 173, Al-Kharj 11942, Saudi Arabia
| | - Anas Shamsi
- Center for Medical and Bio-Allied Health Sciences Research, Ajman University, United Arab Emirates
| | - Md Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi 110025, India.
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Cao X, Cheng XW, Liu YY, Dai HW, Gan RY. Inhibition of pathogenic microbes in oral infectious diseases by natural products: Sources, mechanisms, and challenges. Microbiol Res 2024; 279:127548. [PMID: 38016378 DOI: 10.1016/j.micres.2023.127548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 10/31/2023] [Accepted: 11/10/2023] [Indexed: 11/30/2023]
Abstract
The maintenance of oral health is of utmost importance for an individual's holistic well-being and standard of living. Within the oral cavity, symbiotic microorganisms actively safeguard themselves against potential foreign diseases by upholding a multifaceted equilibrium. Nevertheless, the occurrence of an imbalance can give rise to a range of oral infectious ailments, such as dental caries, periodontitis, and oral candidiasis. Presently, clinical interventions encompass the physical elimination of pathogens and the administration of antibiotics to regulate bacterial and fungal infections. Given the limitations of various antimicrobial drugs frequently employed in dental practice, the rising incidence of oral inflammation, and the escalating bacterial resistance to antibiotics, it is imperative to explore alternative remedies that are dependable, efficacious, and affordable for the prevention and management of oral infectious ailments. There is an increasing interest in the creation of novel antimicrobial agents derived from natural sources, which possess attributes such as safety, cost-effectiveness, and minimal adverse effects. This review provides a comprehensive overview of the impact of natural products on the development and progression of oral infectious diseases. Specifically, these products exert their influences by mitigating dental biofilm formation, impeding the proliferation of oral pathogens, and hindering bacterial adhesion to tooth surfaces. The review also encompasses an examination of the various classes of natural products, their antimicrobial mechanisms, and their potential therapeutic applications and limitations in the context of oral infections. The insights garnered from this review can support the promising application of natural products as viable therapeutic options for managing oral infectious diseases.
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Affiliation(s)
- Xin Cao
- College of Stomatology, Chongqing Medical University, Chongqing 401147, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, China
| | - Xing-Wang Cheng
- Center for Joint Surgery, Department of Orthopedic Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Yin-Ying Liu
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A⁎STAR), 31 Biopolis Way, Singapore 138669, Singapore; Department of Food Science and Technology, Faculty of Science, National University of Singapore, 2 Science Drive 2, Singapore 117542, Singapore
| | - Hong-Wei Dai
- College of Stomatology, Chongqing Medical University, Chongqing 401147, China; Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing 401147, China; Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, China.
| | - Ren-You Gan
- Singapore Institute of Food and Biotechnology Innovation (SIFBI), Agency for Science, Technology and Research (A⁎STAR), 31 Biopolis Way, Singapore 138669, Singapore; Department of Food Science and Technology, Faculty of Science, National University of Singapore, 2 Science Drive 2, Singapore 117542, Singapore.
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Shahmoradi M, Narimani T, Najafi F, Asadi Y, Fekrazad R. Antimicrobial photodynamic therapy with dendrosomal curcumin and blue laser against Porphyromonas gingivalis. Photodiagnosis Photodyn Ther 2023; 44:103825. [PMID: 37797908 DOI: 10.1016/j.pdpdt.2023.103825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/27/2023] [Accepted: 10/02/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND Periodontitis is a chronic inflammatory disease that leads to the loss of tooth-supporting structures. Porphyromonas gingivalis is one of the main pathogens responsible for periodontitis. Because of the limitations of antibiotic use, various alternative approaches have been developed. Antimicrobial photodynamic therapy uses photosensitizers and light to eliminate pathogens. Curcumin is a promising photosensitizer, but has low bioavailability and water solubility. However, dendrosomes can efficiently encapsulate curcumin, overcoming these obstacles. This study aimed to evaluate the efficacy of photodynamic therapy with blue laser and dendrosomal curcumin against Porphyromonas gingivalis. METHODS In this in vitro experiment, the minimum inhibitory concentration (MIC) of dendrosomal curcumin was determined using a serial dilution approach. Porphyromonas gingivalis suspensions were subjected to blue laser irradiation (447 nm, output power 100 mW) for 30 to 180 s. Finally, several subMIC dendrosomal curcumin concentrations and blue laser irradiation periods were applied to the bacterial suspensions. The negative control group received no therapy, whereas the positive control group was treated with 0.2% chlorhexidine. Consequently, the colony count of each group was calculated. RESULTS Treatment of Porphyromonas gingivalis with dendrosomal Curcumin at concentrations of 8-250 μg/mL significantly reduced bacterial growth compared to untreated group. 90 second exposure to a blue laser (31.8 J/cm2) completely inhibited the growth of Porphyromonas gingivalis. Blue laser irradiation for 60 s (21.2 J/cm2) markedly reduced bacterial growth but did not completely prevent its survival. Photodynamic therapy using dendrosomal curcumin at concentrations of 2-4 μg/mL and irradiation for 30-90 s resulted in complete eradication of Porphyromonas gingivalis compared to controls (P < 0.05). CONCLUSION The reduction in survival of Porphyromonas gingivalis following photodynamic therapy with dendrosomal curcumin and blue laser indicates that this technique could be a useful approach to eradicate Porphyromonas gingivalis infections.
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Affiliation(s)
- Majid Shahmoradi
- Periodontology Department, Dental faculty, Aja University of Medical Sciences, Tehran, Iran; Department of Periodontics, School of Dentistry, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Tahmineh Narimani
- Department of Microbiology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farrokh Najafi
- Biomaterial Engineering Faculty, Amir Kabir University, Tehran, Iran
| | - Yasin Asadi
- Periodontology Department, Dental faculty, Aja University of Medical Sciences, Tehran, Iran
| | - Reza Fekrazad
- Radiation Science Research Center, Aja University of Medical Sciences, Tehran, Iran; International Network for Photo Medicine and Photo Dynamic Therapy (INPMPDT), Universal Scientific Education and Research Network (USERN), Tehran, Iran.
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Kushram P, Majumdar U, Bose S. Hydroxyapatite coated titanium with curcumin and epigallocatechin gallate for orthopedic and dental applications. BIOMATERIALS ADVANCES 2023; 155:213667. [PMID: 37979438 PMCID: PMC11132588 DOI: 10.1016/j.bioadv.2023.213667] [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: 07/18/2023] [Revised: 10/09/2023] [Accepted: 10/20/2023] [Indexed: 11/20/2023]
Abstract
Titanium and its alloy are clinically used as an implant material for load-bearing applications to treat bone defects. However, the lack of biological interaction between bone tissue and implant and the risk of infection are still critical challenges in clinical orthopedics. In the current work, we have developed a novel approach by first 1) modifying the implant surface using hydroxyapatite (HA) coating to enhance bioactivity and 2) integrating curcumin and epigallocatechin gallate (EGCG) in the coating that would induce chemopreventive and osteogenic potential and impart antibacterial properties to the implant. The study shows that curcumin and EGCG exhibit controlled and sustained release profiles in acidic and physiological environments. Curcumin and EGCG also show in vitro cytotoxicity toward osteosarcoma cells after 11 days, and the dual system shows a ~94 % reduction in bacterial growth, indicating their in vitro chemopreventive potential and antibacterial efficacy. The release of both curcumin and EGCG was found to be compatible with osteoblast cells and further promotes their growth. It shows a 3-fold enhancement in cellular viability in the dual drug-loaded implant compared to the untreated samples. These findings suggest that multifunctional HA-coated Ti6Al4V implants integrated with curcumin and EGCG could be a promising strategy for osteosarcoma inhibition and osteoblast cell growth while preventing infection.
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Affiliation(s)
- Priya Kushram
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Ujjayan Majumdar
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Susmita Bose
- W. M. Keck Biomedical Materials Research Laboratory, School of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States.
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Shakiba M, Sheikhi M, Pahnavar Z, Tajiki A, Bigham A, Foroozandeh A, Darvishan S, Pourmadadi M, Emadi H, Rezatabar J, Abdouss H, Abdouss M. Development of an antibacterial and antioxidative nanofibrous membrane using curcumin-loaded halloysite nanotubes for smart wound healing: In vitro and in vivo studies. Int J Pharm 2023; 642:123207. [PMID: 37419431 DOI: 10.1016/j.ijpharm.2023.123207] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2023] [Revised: 07/02/2023] [Accepted: 07/04/2023] [Indexed: 07/09/2023]
Abstract
Endowing wound dressings with drug delivery capability is a suitable strategy to transfer medicinal compounds locally to damaged skin layers. These dressings are especially useful for accelerating the healing rate in the cases of long-term treatment, and adding more functionalities to the platform. In this study, a wound dressing composed of polyamide 6, hyaluronic acid, and curcumin-loaded halloysite nanotubes (PA6/HA/HNT@Cur) was designed and fabricated for wound healing applications. The physicochemical properties of this platform were investigated through Fourier-transform infrared spectroscopy and field-emission scanning electron microscopy. Moreover, wettability, tensile strength, swelling, and in vitro degradation were assessed. The HNT@Cur was incorporated in the fibers in three concentrations and 1 wt% was found as the optimum concentration yielding desirable structural and mechanical properties. The loading efficiency of Cur on HNT was calculated to be 43 ± 1.8%, and the release profiles and kinetics of nanocomposite were investigated at physiological and acidic pH. In vitro antibacterial and antioxidation studies showed that the PA6/HA/HNT@Cur mat had strong antibacterial and antioxidation activities against gram-positive and -negative pathogens and reactive oxygen species, respectively. Desirable cell compatibility of the mat was found through MTT assay against L292 cells up to 72 h. Finally, the efficacy of the designed wound dressing was evaluated in vivo; after 14 days, the results indicated that the wound size treated with the nanocomposite mat significantly decreased compared to the control sample. This study proposed a swift and straightforward method for developing materials that might be utilized as wound dressings in clinical settings.
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Affiliation(s)
| | - Mehdi Sheikhi
- Polymer Chemistry Research Laboratory, Department of Chemistry, University of Isfahan, Isfahan, Iran
| | - Zohreh Pahnavar
- Department of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Alireza Tajiki
- Department of Chemistry, Amirkabir University of Technology, Tehran, Iran
| | - Ashkan Bigham
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy (IPCB-CNR), Viale John Fitzgerald Kennedy 54, Mostra d'Oltremare Padiglione 20, 80125 Naples, Italy; Department of Chemical, Materials and Production Engineering, University of Naples Federico II, Piazzale V. Tecchio 80, 80125 Naples, Italy.
| | - Amin Foroozandeh
- Department of Chemistry, Amirkabir University of Technology, Tehran, Iran
| | - Sepehr Darvishan
- Department of Chemistry, Amirkabir University of Technology, Tehran, Iran
| | - Mehrab Pourmadadi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Hamid Emadi
- Department of Chemistry, University of Mazandaran, Babolsar, Iran
| | - Javad Rezatabar
- Department of Pathology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Hamidreza Abdouss
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - Majid Abdouss
- Department of Chemistry, Amirkabir University of Technology, Tehran, Iran.
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Xu B, Li J, Zhang S, Zeb J, Chen S, Yuan Q, Gan W. The Transport of Charged Molecules across Three Lipid Membranes Investigated with Second Harmonic Generation. Molecules 2023; 28:molecules28114330. [PMID: 37298807 DOI: 10.3390/molecules28114330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/12/2023] Open
Abstract
Subtle variations in the structure and composition of lipid membranes can have a profound impact on their transport of functional molecules and relevant cell functions. Here, we present a comparison of the permeability of bilayers composed of three lipids: cardiolipin, DOPG (1,2-dioleoyl-sn-glycero-3-phospho-(1'-rac-glycerol), and POPG (1-palmitoyl-2-oleoyl-sn-glycero-3-phospho-(1'-rac-glycerol)). The adsorption and cross-membrane transport of a charged molecule, D289 (4-(4-diethylaminostyry)-1-methyl-pyridinium iodide), on vesicles composed of the three lipids were monitored by second harmonic generation (SHG) scattering from the vesicle surface. It is revealed that structural mismatching between the saturated and unsaturated alkane chains in POPG leads to relatively loose packing structure in the lipid bilayers, thus providing better permeability compared to unsaturated lipid bilayers (DOPG). This mismatching also weakens the efficiency of cholesterol in rigidifying the lipid bilayers. It is also revealed that the bilayer structure is somewhat disturbed by the surface curvature in small unilamellar vesicles (SUVs) composed of POPG and the conical structured cardiolipin. Such subtle information on the relationship between the lipid structure and the molecular transport capability of the bilayers may provide clues for drug development and other medical and biological studies.
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Affiliation(s)
- Baomei Xu
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Jianhui Li
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Shuai Zhang
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Johar Zeb
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
| | - Shunli Chen
- Key Laboratory for Preparation and Application of Ordered Structure Materials of Guangdong Province, College of Chemistry and Chemical Engineering, Shantou University, Shantou 515063, China
| | - Qunhui Yuan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China
| | - Wei Gan
- Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, China
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
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The Natural Product Curcumin as an Antibacterial Agent: Current Achievements and Problems. Antioxidants (Basel) 2022; 11:antiox11030459. [PMID: 35326110 PMCID: PMC8944601 DOI: 10.3390/antiox11030459] [Citation(s) in RCA: 48] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 02/04/2023] Open
Abstract
The rapid spread of antibiotic resistance and lack of effective drugs for treating infections caused by multi-drug resistant bacteria in animal and human medicine have forced us to find new antibacterial strategies. Natural products have served as powerful therapeutics against bacterial infection and are still an important source for the discovery of novel antibacterial drugs. Curcumin, an important constituent of turmeric, is considered safe for oral consumption to treat bacterial infections. Many studies showed that curcumin exhibited antibacterial activities against Gram-negative and Gram-positive bacteria. The antibacterial action of curcumin involves the disruption of the bacterial membrane, inhibition of the production of bacterial virulence factors and biofilm formation, and the induction of oxidative stress. These characteristics also contribute to explain how curcumin acts a broad-spectrum antibacterial adjuvant, which was evidenced by the markedly additive or synergistical effects with various types of conventional antibiotics or non-antibiotic compounds. In this review, we summarize the antibacterial properties, underlying molecular mechanism of curcumin, and discuss its combination use, nano-formulations, safety, and current challenges towards development as an antibacterial agent. We hope that this review provides valuable insight, stimulates broader discussions, and spurs further developments around this promising natural product.
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Observing the structural variations on binary complex vesicle surfaces and the influence on molecular transportation. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2021.111250] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Souza EQM, da Rocha TE, Toro LF, Guiati IZ, Freire JDOA, Ervolino E, Brandini DA, Garcia VG, Theodoro LH. Adjuvant effects of curcumin as a photoantimicrobial or irrigant in the non-surgical treatment of periodontitis: Systematic review and meta-analysis. Photodiagnosis Photodyn Ther 2021; 34:102265. [PMID: 33781908 DOI: 10.1016/j.pdpdt.2021.102265] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/16/2021] [Accepted: 03/19/2021] [Indexed: 12/11/2022]
Abstract
AIM Curcumin (CUR) has been used clinically in several studies as a subgingival irrigant or as a photoantimicrobial in combination with a blue light-emitting diode (LED) in antimicrobial photodynamic therapy (aPDT) adjuvant to scaling and root planing (SRP). The aim of this study was to assess the effectiveness of CUR as an irrigant or as a photoantimicrobial in conjunction with the blue LED in aPDT adjuvant to SRP, compared to SRP as conventional mechanical treatment. MATERIALS AND METHODS Fifteen randomized controlled trials (RCT) were included in a qualitative analysis after researching the databases: PubMed / MEDLINE, SCOPUS, EMBASE, Cochrane Central, Web of Science and Scielo. Manual searches were also performed. Five studies were submitted to quantitative analysis, evaluating periodontal clinical parameters such as probing depth (PD) and clinical attachment level (CAL). RESULTS The obtained results have shown clinical benefits in PD reduction and CAL gains at 3 months with the use of CUR as adjuvant therapy to SRP, both as an irrigant or photoantimicrobial, in comparison with SRP monotherapy. CONCLUSION Currently, there is evidence that treatment with CUR applied as irrigant or in conjunction with the blue LED as aPDT presents superior clinical results in the short term, for clinical periodontics parameters like as PD reduction and CAL gain, when compared to SRP monotherapy in the non-surgical treatment of periodontitis. However, these results cannot be proven in the long term.
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Affiliation(s)
- Eduardo Quintão Manhanini Souza
- Department of Diagnostic and Surgery, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, SP, Brazil.
| | - Tiago Esgalha da Rocha
- Department of Diagnostic and Surgery, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, SP, Brazil.
| | - Luan Felipe Toro
- Institute of Biosciences of Botucatu - IBB (UNESP), Botucatu, SP, Brazil.
| | | | | | - Edilson Ervolino
- Department of Basic Sciences, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, SP, Brazil.
| | - Daniela Atili Brandini
- Department of Diagnostic and Surgery, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, SP, Brazil.
| | - Valdir Gouveia Garcia
- Latin American Institute of Dental Research and Education (ILAPEO), Curitiba, PR, Brazil.
| | - Letícia Helena Theodoro
- Department of Diagnostic and Surgery, School of Dentistry of Araçatuba, São Paulo State University (UNESP), Araçatuba, SP, Brazil.
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Hou Y, Li J, Liu X, Ruan Y, Chen SL, Yuan Q, Gan W. The effect of side group on the dynamic behavior of anthracyclines on DOPG lipid membranes revealed by second harmonic generation and fluorescence. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2020.111036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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11
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Teixeira CGDS, Sanitá PV, Ribeiro APD, Dias LM, Jorge JH, Pavarina AC. Antimicrobial photodynamic therapy effectiveness against susceptible and methicillin-resistant Staphylococcus aureus biofilms. Photodiagnosis Photodyn Ther 2020; 30:101760. [PMID: 32283312 DOI: 10.1016/j.pdpdt.2020.101760] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/10/2020] [Accepted: 03/23/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND Staphylococcus aureus have a great ability to become rapidly resistant to conventional antimicrobial therapies. This study evaluated the efficacy of antimicrobial photodynamic therapy (aPDT) mediated by Curcumin (Cur) and light-emitting diode (LED) in the inactivation of biofilms of methicillin susceptible and resistant S. aureus (MSSA and MRSA, respectively). METHODS Biofilms were treated with Cur (20, 40 or 80 μM) and illuminated with LED source (455 ± 3 nm; 5.28 J/cm2) (aPDT groups), or treated either with Cur or LED only. Other samples were not exposed to Cur or LED (negative control). The biofilms viability after all experimental conditions were evaluated by counting the number of colonies (CFU/mL) and XTT assay. Additional samples were also evaluated by LIVE/DEAD® staining using confocal laser scanning microscopy (CLSM). Data were analyzed by ANOVAs followed by the Games-Howell post hoc test (α = 0.05). RESULTS For both strains, all aPDT groups significantly reduced both CFU/mL and metabolic activity of biofilms compared to the negative control (p < 0.001). The results were enhanced when 80 μM of Cur was used. CLSM images showed that both bacteria biofilms submitted to aPDT had a large number of red-stained colonies, especially at aPDT80. In general, MRSA biofilms tended to be less susceptible to aPDT than MSSA biofilms. CONCLUSIONS It can be concluded that aPDT mediated by Cur and LED was an efficient method to inactivate 48 -h biofilms of both S. aureus strains.
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Affiliation(s)
- Camilo Geraldo de Souza Teixeira
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil
| | - Paula Volpato Sanitá
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil
| | - Ana Paula Dias Ribeiro
- Department of Restorative Dental Sciences, College of Dentistry, University of Florida, Center Dr. 1395, Gainesville, 32610, FL, USA
| | - Luana Mendonça Dias
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil
| | - Janaina Habib Jorge
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil
| | - Ana Cláudia Pavarina
- Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Rua Humaitá, 1680, 14801-903, Araraquara, SP, Brazil.
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Li J, Chen SL, Hou Y, Zhou J, Yuan Q, Gan W. Drastically modulating the structure, fluorescence, and functionality of doxorubicin in lipid membrane by interfacial density control. J Chem Phys 2019; 151:224706. [PMID: 31837686 DOI: 10.1063/1.5126232] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
In this work, we report on the observation of a drastic modulation of the fluorescence emission of an anticancer drug, doxorubicin, at the lipid interface during the variation of its molecular density at the interface. The emission efficiency of doxorubicin in the lipid membrane was modulated in the range of less than 10% to above 300% that in the aqueous solution. The corresponding changes in the structure and functionality of doxorubicin on the lipid surface were analyzed with the aid of second harmonic generation and theoretical calculation. It was observed that doxorubicin molecules aggregated on the lipid membrane at a relatively high interfacial density. However, this aggregation may not cause interfacial domain large enough to alter the permeability of the lipid bilayer. At an even higher doxorubicin density, the domain of the aggregated doxorubicin molecules induced a cross-membrane transportation.
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Affiliation(s)
- Jianhui Li
- State Key Laboratory of Advanced Welding and Joining, and School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Shun-Li Chen
- State Key Laboratory of Advanced Welding and Joining, and School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Yi Hou
- State Key Laboratory of Advanced Welding and Joining, and School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Jia Zhou
- School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Qunhui Yuan
- State Key Laboratory of Advanced Welding and Joining, and School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
| | - Wei Gan
- State Key Laboratory of Advanced Welding and Joining, and School of Science, Harbin Institute of Technology (Shenzhen), University Town, Shenzhen 518055, Guangdong, China
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Wilhelm MJ, Dai HL. Molecule-Membrane Interactions in Biological Cells Studied with Second Harmonic Light Scattering. Chem Asian J 2019; 15:200-213. [PMID: 31721448 DOI: 10.1002/asia.201901406] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 11/12/2019] [Indexed: 12/13/2022]
Abstract
The nonlinear optical phenomenon second harmonic light scattering (SHS) can be used for detecting molecules at the membrane surfaces of living biological cells. Over the last decade, SHS has been developed for quantitatively monitoring the adsorption and transport of small and medium size molecules (both neutral and ionic) across membranes in living cells. SHS can be operated with both time and spatial resolution and is even capable of isolating molecule-membrane interactions at specific membrane surfaces in multi-membrane cells, such as bacteria. In this review, we discuss select examples from our lab employing time-resolved SHS to study real-time molecular interactions at the plasma membranes of biological cells. We first demonstrate the utility of this method for determining the transport rates at each membrane/interface in a Gram-negative bacterial cell. Next, we show how SHS can be used to characterize the molecular mechanism of the century old Gram stain protocol for classifying bacteria. Additionally, we examine how membrane structures and molecular charge and polarity affect adsorption and transport, as well as how antimicrobial compounds alter bacteria membrane permeability. Finally, we discuss adaptation of SHS as an imaging modality to quantify molecular adsorption and transport in sub-cellular regions of individual living cells.
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Affiliation(s)
- Michael J Wilhelm
- Department of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA 19122, USA
| | - Hai-Lung Dai
- Department of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, PA 19122, USA
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14
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Polaquini CR, Morão LG, Nazaré AC, Torrezan GS, Dilarri G, Cavalca LB, Campos DL, Silva IC, Pereira JA, Scheffers DJ, Duque C, Pavan FR, Ferreira H, Regasini LO. Antibacterial activity of 3,3'-dihydroxycurcumin (DHC) is associated with membrane perturbation. Bioorg Chem 2019; 90:103031. [PMID: 31238181 DOI: 10.1016/j.bioorg.2019.103031] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 05/24/2019] [Accepted: 06/03/2019] [Indexed: 12/15/2022]
Abstract
Curcumin is a plant diphenylheptanoid and has been investigated for its antibacterial activity. However, the therapeutic uses of this compound are limited due to its chemical instability. In this work, we evaluated the antimicrobial activity of diphenylheptanoids derived from curcumin against Gram-positive and Gram-negative bacteria, and also against Mycobacterium tuberculosis in terms of MIC (Minimum Inhibitory Concentration) and MBC (Minimum Bactericidal Concentration) values. 3,3'-Dihydroxycurcumin (DHC) displayed activity against Enterococcus faecalis, Staphylococcus aureus and M. tuberculosis, demonstrating MIC values of 78 and 156 µg/mL. In addition, DHC was more stable than curcumin in acetate buffer (pH 5.0) and phosphate buffer (pH 7.4) for 24 h at 37 °C. We proposed that membrane and the cell division protein FtsZ could be the targets for DHC due to that fact that curcumin exhibits this mode of antibacterial action. Fluorescence microscopy of Bacillus subtilis stained with SYTO9 and propidium iodide fluorophores indicated that DHC has the ability to perturb the bacterial membrane. On the other hand, DHC showed a weak inhibition of the GTPase activity of B. subtilis FtsZ. Toxicity assay using human cells indicated that DHC has moderate capacity to reduce viability of liver cells (HepG2 line) and lung cells (MRC-5 and A549 lines) when compared with doxorubicin. Alkaline comet assay indicated that DHC was not able to induce DNA damage in A549 cell line. These results indicated that DHC is promising compound with antibacterial and antitubercular activities.
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Affiliation(s)
- Carlos R Polaquini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Luana G Morão
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil
| | - Ana C Nazaré
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Guilherme S Torrezan
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil
| | - Guilherme Dilarri
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil
| | - Lúcia B Cavalca
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil; Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747, the Netherlands
| | - Débora L Campos
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Isabel C Silva
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil; Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Jessé A Pereira
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba 16015-050, Brazil
| | - Dirk-Jan Scheffers
- Department of Molecular Microbiology, Groningen Biomolecular Sciences and Biotechnology Institute, University of Groningen, Groningen 9747, the Netherlands
| | - Cristiane Duque
- Department of Pediatric Dentistry and Public Health, School of Dentistry, São Paulo State University (Unesp), Araçatuba 16015-050, Brazil
| | - Fernando R Pavan
- Department of Biological Sciences, School of Pharmaceutical Sciences, São Paulo State University (Unesp), Araraquara 14800-903, Brazil
| | - Henrique Ferreira
- Department of Biochemistry and Microbiology, Institute of Biosciences, São Paulo State University (Unesp), Rio Claro 13506-900, Brazil.
| | - Luis O Regasini
- Department of Chemistry and Environmental Sciences, Institute of Biosciences, Humanities and Exact Sciences, São Paulo State University (Unesp), São José do Rio Preto 15054-000, Brazil.
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15
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Valencia L, Nomena EM, Mathew AP, Velikov KP. Biobased Cellulose Nanofibril-Oil Composite Films for Active Edible Barriers. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16040-16047. [PMID: 30977999 PMCID: PMC6508752 DOI: 10.1021/acsami.9b02649] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/12/2019] [Indexed: 05/07/2023]
Abstract
Low-concentration oil-in-water emulsions stabilized by cellulose nanofibrils (CNFs) extracted from primary plant cell wall materials are used to prepare thin biobased CNF-oil composite films by solvent casting. Flexible, transparent, and biodegradable composite films are obtained, with increased thermal stability (up to 300 °C) as the oil concentration increases. Examination of the microstructure demonstrates a clear dependency on the oil content, as a multilayered structure where the oil phase trapped between two layers of CNFs is appreciated at high oil concentrations. The embedded oil significantly influences the mechanical and wetting properties of the films, confirming their potential for use in packaging systems. Encapsulation of curcumin in the composite films leads to an increased antioxidant (up to 30% radical scavenging activity) and antimicrobial activity, inhibiting the growth of foodborne bacteria such as Escherichia coli. The resulting composite films show promising results in the field of active packaging for applications in the food, pharmaceutical, and cosmetic industries.
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Affiliation(s)
- Luis Valencia
- Division
of Materials and Environmental Chemistry, Stockholm University, Frescativägen 8, 10691 Stockholm, Sweden
| | - Emma M. Nomena
- Unilever
R&D Vlaardingen, Olivier van Nortlaan 120, 3133 AT Vlaardingen, The Netherlands
- Institute
of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
| | - Aji P. Mathew
- Division
of Materials and Environmental Chemistry, Stockholm University, Frescativägen 8, 10691 Stockholm, Sweden
| | - Krassimir P. Velikov
- Unilever
R&D Vlaardingen, Olivier van Nortlaan 120, 3133 AT Vlaardingen, The Netherlands
- Institute
of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands
- Soft
Condensed Matter, Debye Institute for Nanomaterials Science, Utrecht University, Princetonplein 5, 3584 CC Utrecht, The Netherlands
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16
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Kintali S, Varshney GK, Das K. pH-Dependent Interaction of Four Different Bile Salts with POPG Liposomes Studied by Dynamic Light Scattering and Second Harmonic Spectroscopy. ChemistrySelect 2019. [DOI: 10.1002/slct.201803509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Srinivasarao Kintali
- Photochem. &Photophys. Appl. Lab; Laser Bio-Medical Applications Section; Raja Ramanna Centre for Advanced Technology; Indore 452013, M.P. India
- Homi Bhabha National Institute; Training School Complex, Anushakti Nagar; Mumbai 400094 India
| | - Gopal Kishor Varshney
- Photochem. &Photophys. Appl. Lab; Laser Bio-Medical Applications Section; Raja Ramanna Centre for Advanced Technology; Indore 452013, M.P. India
- Homi Bhabha National Institute; Training School Complex, Anushakti Nagar; Mumbai 400094 India
| | - Kaustuv Das
- Photochem. &Photophys. Appl. Lab; Laser Bio-Medical Applications Section; Raja Ramanna Centre for Advanced Technology; Indore 452013, M.P. India
- Homi Bhabha National Institute; Training School Complex, Anushakti Nagar; Mumbai 400094 India
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17
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Kintali S, Kishor Varshney G, Das K. Interaction of Amphotericin B with Ergosterol/Cholesterol-Containing POPG Liposomes Studied by Absorption, Fluorescence and Second Harmonic Spectroscopy. ChemistrySelect 2018. [DOI: 10.1002/slct.201801924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Srinivasarao Kintali
- Photochem. &Photophys. Appl. Lab, Laser Bio-Medical Applications Section; Raja Ramanna Centre for Advanced Technology; Indore 452013, M.P. India
- HomiBhabha National Institute; Training School Complex, Anushakti Nagar; Mumbai 400094 India
| | - Gopal Kishor Varshney
- Photochem. &Photophys. Appl. Lab, Laser Bio-Medical Applications Section; Raja Ramanna Centre for Advanced Technology; Indore 452013, M.P. India
- HomiBhabha National Institute; Training School Complex, Anushakti Nagar; Mumbai 400094 India
| | - Kaustuv Das
- Photochem. &Photophys. Appl. Lab, Laser Bio-Medical Applications Section; Raja Ramanna Centre for Advanced Technology; Indore 452013, M.P. India
- HomiBhabha National Institute; Training School Complex, Anushakti Nagar; Mumbai 400094 India
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18
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Effect of three pluronic polymers on the transport of an organic cation across a POPG bilayer studied by Second Harmonic spectroscopy. Chem Phys Lett 2017. [DOI: 10.1016/j.cplett.2017.07.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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19
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Varshney GK, Kintali SR, Das K. Effect of Curcumin Addition on the Adsorption and Transport of a Cationic Dye across DPPG-POPG Liposomes Probed by Second Harmonic Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8302-8310. [PMID: 28742369 DOI: 10.1021/acs.langmuir.7b01783] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The effect of addition of curcumin on the adsorption and transport characteristics of a cationic dye, LDS+, across negatively charged bilayers composed of POPG and DPPG lipids were investigated by the interface selective second harmonic (SH) spectroscopic technique. Curcumin induced changes in the SH electric field signal of the LDS+ ions (E2ω (LDS+)) were observed to depend critically on the bilayer acyl chain saturation/unsaturation ratio (S/U). Following earlier works, the increase in the E2ω (LDS+) signal is attributed to the release of the Na+ counterions present in the head group region of the bilayer by curcumin and the decay of the E2ω (LDS+) signal is attributed to the bilayer intercalated state of curcumin. While the changes observed in the E2ω (LDS+) signal in the presence of POPG liposomes were consistent with our earlier study ( Varshney, G. K. et al. Langmuir , 2016 , 32 , 10415 - 10421 ), they were significantly different for DPPG liposomes, following curcumin addition. While the increase in the E2ω (LDS+) signal in the presence of POPG liposomes, is marginal (∼10-20%) and instantaneous (<1 s) followed by a rapid decay (completed within ∼100 s), in the presence of DPPG liposomes it was observed to increase slowly and at saturation shows a substantial increase (100-200%), following curcumin addition. When liposomes consisting of a mixture of POPG and DPPG lipids are used, curcumin induced kinetic characteristics of the E2ω (LDS+) signal showed a mixture of the individual kinetic characteristics observed for the unsaturated (POPG) and saturated (DPPG) liposomes. The observed kinetic trends of the E2ω (LDS+) signal following curcumin addition are explained on the basis of the relative strength of the Na+-POPG and Na+-DPPG interaction. Higher ordering of the lipid acyl chain region in DPPG liposome makes the Na+-DPPG interaction much stronger than the Na+-POPG interaction. Further, it is proposed that, in POPG-DPPG liposomes, individual domains of POPG and DPPG lipids exist at low temperature as suggested by the observed temperature dependent kinetic characteristics of the E2ω (LDS+) signal following curcumin addition. These domains are dependent on the S/U ratio and phase state of the bilayer. The gel phase was observed to be more conducive for individual domain formation. Results presented in this work not only support the notion that biological activity of curcumin is associated with its bilayer altering properties, but more interestingly it provides a qualitative insight about how bilayer phase separation can be achieved by modulating the hydrophobic interactions between the lipid acyl chains.
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Affiliation(s)
- G K Varshney
- Photochem. & Photophys. Appl. Lab, Laser Bio-Medical Applications Section, Raja Ramanna Center for Advanced Technology , Indore, M.P. India 452013
- Homi Bhabha National Institute , Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - S R Kintali
- Photochem. & Photophys. Appl. Lab, Laser Bio-Medical Applications Section, Raja Ramanna Center for Advanced Technology , Indore, M.P. India 452013
- Homi Bhabha National Institute , Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - K Das
- Photochem. & Photophys. Appl. Lab, Laser Bio-Medical Applications Section, Raja Ramanna Center for Advanced Technology , Indore, M.P. India 452013
- Homi Bhabha National Institute , Training School Complex, Anushakti Nagar, Mumbai 400094, India
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20
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Varshney GK, Kintali SR, Gupta PK, Das K. A comparative study on the effect of Curcumin and Chlorin-p 6 on the transport of the LDS cation across a negatively charged POPG bilayer: Effect of pH. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 173:132-138. [PMID: 27619975 DOI: 10.1016/j.saa.2016.09.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 08/28/2016] [Accepted: 09/01/2016] [Indexed: 06/06/2023]
Abstract
We report the use of interface selective Second Harmonic generation technique to investigate the transport of the LDS cation across POPG liposomes in the pH range of 4.0 to 8.0 in the presence and absence of two amphiphilic drugs, Curcumin and Chlorin-p6 (Cp6). Our results show that bilayer permeability of liposomes is significantly affected by the presence of the drugs and pH of the medium as evidenced by significant changes in the transport kinetics of the LDS. Studies carried out in the pH range 4.0-8.0 show that while Cp6 significantly enhanced the transport of LDS at pH4.0, the transport of the cation was seen to increase with increasing pH, with maximum effect at pH7.4 for Curcumin. The pH dependent bilayer localization of both the drugs was investigated by conducting steady state FRET studies using DPH labeled lipids as donors. The FRET results and the relative population of the various ionic/nonionic species of the drugs at different pH suggest that distance dependent interaction between the various ionic species of the drugs and polar head groups of the lipid is responsible for the observed pH dependence enhancement of the drug induced membrane permeability. Another interesting observation was that the stability of Curcumin in presence of POPG liposomes was observed to degrade significantly near physiological pH (7.4 and 8.0). Although this degradation did not affect the liposome integrity, interestingly this was observed to enhance the transport of the LDS cation across the bilayer. That the degradation products of Curcumin are equally effective as the drug itself in enhancing the membrane permeability lends additional support to the current opinion that the bioactive degradation products of the drug may have a significant contribution to its observed pharmacological effects.
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Affiliation(s)
- G K Varshney
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications & Instrumentation Division, Raja Ramanna Center for Advanced Technology, Indore, M.P. 452013, India
| | - S R Kintali
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications & Instrumentation Division, Raja Ramanna Center for Advanced Technology, Indore, M.P. 452013, India
| | - P K Gupta
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications & Instrumentation Division, Raja Ramanna Center for Advanced Technology, Indore, M.P. 452013, India
| | - K Das
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications & Instrumentation Division, Raja Ramanna Center for Advanced Technology, Indore, M.P. 452013, India.
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21
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Varshney GK, Kintali SR, Gupta PK, Das K. Effect of Bilayer Partitioning of Curcumin on the Adsorption and Transport of a Cationic Dye Across POPG Liposomes Probed by Second-Harmonic Spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10415-10421. [PMID: 27636651 DOI: 10.1021/acs.langmuir.6b02797] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The effect of Curcumin partitioning into the bilayer during the adsorption and transport of a cationic dye, LDS, across a negatively charged POPG bilayer was investigated by the interface-selective second-harmonic (SH) spectroscopic technique. The intensity of SH electric field (E2ω) arising due to LDS adsorbed on the outer bilayer of the POPG liposome was observed to increase instantaneously (<1 s) following the addition of Curcumin. The fractional increase in the SH electric field (Ef2ω) and the bilayer transport rates (kT) of LDS were studied with respect to the pH of the solution and also with the Curcumin content in the lipid bilayer. Results obtained indicate that compared with the anionic form of the drug, its neutral form is more conducive of increasing the Ef2ω of LDS. With increasing Curcumin content in the lipid bilayer, two distinct regimes could be observed in terms of Ef2ω and kT values of LDS. For Curcumin:Lipid (C/L) ratio ≤0.02, the Ef2ω of LDS increases rapidly, while kT remains unchanged; and for C/L ratio ≥0.02, the Ef2ω values remains more or less constant, while there is a significant (∼40 times) increase followed by a modest increase in the kT values of LDS. The observed results support an earlier two-state binding model of Curcumin with the POPG bilayer. In addition, it is further proposed that at low C/L ratio Curcumin binds to the surface of the bilayer replacing the counterions (Na+) bound to the lipid head groups, which changes the bilayer surface charge density, thereby causing more LDS cations to adsorb on the bilayer surface. At high C/L ratio, Curcumin intercalates within the hydrophobic domain of the bilayer, altering its hydrophobicity and inducing enhanced transport of the LDS cation. Results presented in this work provide further insights into how Curcumin alters bilayer properties when it partitions from the aqueous to the bilayer phase.
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Affiliation(s)
- G K Varshney
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications Section, Raja Ramanna Center for Advanced Technology , Indore, Madhya Pradesh 452013, India
- Homi Bhabha National Institute , Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - S R Kintali
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications Section, Raja Ramanna Center for Advanced Technology , Indore, Madhya Pradesh 452013, India
- Homi Bhabha National Institute , Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - P K Gupta
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications Section, Raja Ramanna Center for Advanced Technology , Indore, Madhya Pradesh 452013, India
- Homi Bhabha National Institute , Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - K Das
- Optical Spectroscopy & Diagnostic Lab, Laser Bio-Medical Applications Section, Raja Ramanna Center for Advanced Technology , Indore, Madhya Pradesh 452013, India
- Homi Bhabha National Institute , Training School Complex, Anushakti Nagar, Mumbai 400094, India
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22
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Hajj Ali H, Michaux F, Bouelet Ntsama IS, Durand P, Jasniewski J, Linder M. Shea butter solid nanoparticles for curcumin encapsulation: Influence of nanoparticles size on drug loading. EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201500348] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Hassan Hajj Ali
- Université de Lorraine; LIBio (Laboratoire d'Ingénierie des Biomolécules); Vandoeuvre-lès-Nancy France
| | - Florentin Michaux
- Université de Lorraine; LIBio (Laboratoire d'Ingénierie des Biomolécules); Vandoeuvre-lès-Nancy France
| | | | - Pierrick Durand
- Université de Lorraine; CRM2 (Cristallographie, Résonance Magnétique et Modélisations); UMR CNRS 7036; Institut Jean Barriol; Boulevard des Aiguillettes Vandoeuvre-lès-Nancy France
| | - Jordane Jasniewski
- Université de Lorraine; LIBio (Laboratoire d'Ingénierie des Biomolécules); Vandoeuvre-lès-Nancy France
| | - Michel Linder
- Université de Lorraine; LIBio (Laboratoire d'Ingénierie des Biomolécules); Vandoeuvre-lès-Nancy France
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23
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Wilhelm MJ, Sheffield JB, Sharifian Gh. M, Wu Y, Spahr C, Gonella G, Xu B, Dai HL. Gram's Stain Does Not Cross the Bacterial Cytoplasmic Membrane. ACS Chem Biol 2015; 10:1711-7. [PMID: 25879387 DOI: 10.1021/acschembio.5b00042] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
For well over a century, Hans Christian Gram's famous staining protocol has been the standard go-to diagnostic for characterizing unknown bacteria. Despite continuous and ubiquitous use, we now demonstrate that the current understanding of the molecular mechanism for this differential stain is largely incorrect. Using the fully complementary time-resolved methods: second-harmonic light-scattering and bright-field transmission microscopy, we present a real-time and membrane specific quantitative characterization of the bacterial uptake of crystal-violet (CV), the dye used in Gram's protocol. Our observations contradict the currently accepted mechanism which depicts that, for both Gram-negative and Gram-positive bacteria, CV readily traverses the peptidoglycan mesh (PM) and cytoplasmic membrane (CM) before equilibrating within the cytosol. We find that not only is CV unable to traverse the CM but, on the time-scale of the Gram-stain procedure, CV is kinetically trapped within the PM. Our results indicate that CV, rather than dyes which rapidly traverse the PM, is uniquely suited as the Gram stain.
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Affiliation(s)
- Michael J. Wilhelm
- Department
of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Joel B. Sheffield
- Department
of Biology, Temple University, 1900 N. 12th Street, Philadelphia, Pennsylvania 19122, United States
| | - Mohammad Sharifian Gh.
- Department
of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Yajing Wu
- Department
of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Christian Spahr
- Department
of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Grazia Gonella
- Department
of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Bolei Xu
- Department
of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, Pennsylvania 19122, United States
| | - Hai-Lung Dai
- Department
of Chemistry, Temple University, 1901 N. 13th Street, Philadelphia, Pennsylvania 19122, United States
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Bactericidal activity of curcumin I is associated with damaging of bacterial membrane. PLoS One 2015; 10:e0121313. [PMID: 25811596 PMCID: PMC4374920 DOI: 10.1371/journal.pone.0121313] [Citation(s) in RCA: 338] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 01/30/2015] [Indexed: 01/26/2023] Open
Abstract
Curcumin, an important constituent of turmeric, is known for various biological activities, primarily due to its antioxidant mechanism. The present study focused on the antibacterial activity of curcumin I, a significant component of commercial curcumin, against four genera of bacteria, including those that are Gram-positive (Staphylococcus aureus and Enterococcus faecalis) and Gram-negative (Escherichia coli and Pseudomonas aeruginosa). These represent prominent human pathogens, particularly in hospital settings. Our study shows the strong antibacterial potential of curcumin I against all the tested bacteria from Gram-positive as well as Gram-negative groups. The integrity of the bacterial membrane was checked using two differential permeabilization indicating fluorescent probes, namely, propidium iodide and calcein. Both the membrane permeabilization assays confirmed membrane leakage in Gram-negative and Gram-positive bacteria on exposure to curcumin I. In addition, scanning electron microscopy and fluorescence microscopy were employed to confirm the membrane damages in bacterial cells on exposure to curcumin I. The present study confirms the broad-spectrum antibacterial nature of curcumin I, and its membrane damaging property. Findings from this study could provide impetus for further research on curcumin I regarding its antibiotic potential against rapidly emerging bacterial pathogens.
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Saini R, Varshney G, Dube A, Gupta P, Das K. A comparative study on the effect of Curcumin and Chlorin-p6 on the diffusion of two organic cations across a negatively charged lipid bilayer probed by second harmonic spectroscopy. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.056] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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26
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Wilhelm MJ, Sheffield JB, Gonella G, Wu Y, Spahr C, Zeng J, Xu B, Dai HL. Real-time molecular uptake and membrane-specific transport in living cells by optical microscopy and nonlinear light scattering. Chem Phys Lett 2014. [DOI: 10.1016/j.cplett.2014.05.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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