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Promkatkaew M, Boonsri P, Suramitr S, Karpkird T, Wolschann P, Hannongbua S. Stability improvement of UV-filter between methoxy cinnamic acid derivatives and cyclodextrins inclusion complexes based on DFT and TD-DFT investigations. J Mol Graph Model 2023; 125:108619. [PMID: 37666055 DOI: 10.1016/j.jmgm.2023.108619] [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: 06/30/2023] [Revised: 08/21/2023] [Accepted: 08/29/2023] [Indexed: 09/06/2023]
Abstract
Structures and UV-vis absorption spectra of the host-guest interaction of the methoxy cinnamic acid (MCA) derivatives and cyclodextrins (CDs) were performed by using the density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations. All geometries of MCA derivatives (4-MCA, 245-MCA, 246-MCA), three types of CD (αCD, βCD, γCD), and five host-guest inclusion complexes between MCA and CD consisting of 4-MCA/αCD (1), 4-MCA/βCD (2), 245-MCA/βCD (3), 246-MCA/βCD (4), and 246-MCA/γCD (5) were fully optimized by using the M06-2X/6-31G (d,p) levels of theory. Two orientations (A and B) of the MCA guest molecule were considered. Upon examining the optimized geometry, five complexes of the methoxy cinnamic acid molecules are located inside the cavity of CD. Orientation B was more stable than orientation A because of the stronger intermolecular hydrogen bonds between the hydroxyl group of CD and the carboxylic group of MCA. The results indicated that the intermolecular hydrogen bond is mainly the driving force of formation between methoxy cinnamic acid and cyclodextrins. To reveal the host-guest interaction that is relevant to UV-filter compounds, the UV-vis absorption spectra were performed using TD-DFT calculations. The obtained results confirmed that orientation B is the most stable orientation and can absorb in both UVB and UVA regions which is similar to the parent MCA. Therefore, this knowledge will bring to understand the host-guest interaction between methoxy cinnamic acid and cyclodextrin complexes. The theoretical results are expected to provide valuable information for improving the stability of further UV-filter compounds.
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Affiliation(s)
- Malinee Promkatkaew
- Faculty of Science at Sriracha, Kasetsart University Sriracha Campus, Chonburi, 20230, Thailand.
| | - Pornthip Boonsri
- Department of Chemistry, Faculty of Science, Srinakharinwirot University, Bangkok, 10110, Thailand
| | - Songwut Suramitr
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand
| | - Thitinun Karpkird
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand
| | - Peter Wolschann
- Institute of Theoretical Chemistry, University of Vienna, Vienna, 1090, Austria
| | - Supa Hannongbua
- Department of Chemistry, Faculty of Science, Kasetsart University, Bangkok, 10900, Thailand.
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Aiassa V, Garnero C, Zoppi A, Longhi MR. Cyclodextrins and Their Derivatives as Drug Stability Modifiers. Pharmaceuticals (Basel) 2023; 16:1074. [PMID: 37630988 PMCID: PMC10459549 DOI: 10.3390/ph16081074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 07/20/2023] [Accepted: 07/22/2023] [Indexed: 08/27/2023] Open
Abstract
Cyclodextrins (CDs) are cyclic oligosaccharides that contain a relatively hydrophobic central cavity and a hydrophilic outer surface. They are widely used to form non-covalent inclusion complexes with many substances. Although such inclusion complexes typically exhibit higher aqueous solubility and chemical stability than pure drugs, it has been shown that CDs can promote the degradation of some drugs. This property of stabilizing certain drugs while destabilizing others can be explained by the type of CD used and the structure of the inclusion complex formed. In addition, the ability to form complexes of CDs can be improved through the addition of suitable auxiliary substances, forming multicomponent complexes. Therefore, it is important to evaluate the effect that binary and multicomponent complexes have on the chemical and physical stability of complexed drugs. The objective of this review is to summarize the studies on the stabilizing and destabilizing effects of complexes with CDs on drugs that exhibit stability problems.
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Evaluation of the skin protective effects of niosomal-entrapped annona squamosa against UVA irradiation. PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES : OFFICIAL JOURNAL OF THE EUROPEAN PHOTOCHEMISTRY ASSOCIATION AND THE EUROPEAN SOCIETY FOR PHOTOBIOLOGY 2022; 21:2231-2241. [PMID: 36030490 DOI: 10.1007/s43630-022-00291-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 08/16/2022] [Indexed: 12/24/2022]
Abstract
Annona squamosa is a medicinal plant that has been used in folk medicine since antiquity. The goal of this study is to see how effective Annona squamosa leaf extract (A.S.L.E) or its niosomal-entrapped preparation is at protecting skin from UVA irradiation. The prepared niosomal-entrapped A.S.L.E has been characterized via spectrophotometry and transmission electron microscopy imaging. Furthermore, the entrapment efficiency and in vitro release of A.S.L.E were determined. In this study, ex vivo and freshly prepared samples from the dorsal region of the rats' skin were used as biological samples, which were divided into five groups: control UVA-unexposed, unprotected UVA-exposed, A.S.L.E-protected UVA-exposed, and niosomal-entrapped A.S.L.E UVA-exposed. UVA irradiation was performed by exposing the skin samples to a UVA-producing lamp for 4 h. Samples from various groups were then examined using FTIR spectroscopy, histopathology, and protein electrophoresis methods. The results showed that A.S.L.E has a skin protective effect against UVA irradiation. The niosomal-entrapped A.S.L.E was more effective than the native plant leaf extract in protecting skin from the damaging effects of UVA. Therefore, the nanotechnologically formulated preparation, niosomal-entrapped A.S.L.E, can be used as an effective photoprotector (sunscreen) against the adverse effects of UVA radiation.
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Liang CH, Chen YJ. Preparation of High-Performance Metal-Free UV/Near Infrared-Shielding Films for Human Skin Protection. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1954. [PMID: 34443786 PMCID: PMC8401668 DOI: 10.3390/nano11081954] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/20/2021] [Revised: 07/23/2021] [Accepted: 07/26/2021] [Indexed: 11/22/2022]
Abstract
A series of metal-free UV/near infrared (NIR)-shielding coatings are successfully fabricated by shielded cathodic arc plasma evaporation (CAPE) and substrate-biased RF magnetron sputtering processes. The UV/NIR-shielding coatings comprising quarter-wave stacks of TiO2/SiO2 multilayers and high-conductivity sputter-deposited ITO films with a thickness in the range of 200-600 nm could block IRA and IRB radiations, respectively. The total thicknesses of UV/near infrared-shielding films are in the range from 375 nm to 1513.8 nm. The anatase-phase TiO2 films with absorption edge located at ∼375 nm were deposited by shielded CAPE at ∼100 °C. Further, the well-crystallized ITO films were found to have high free-electron concentrations (1.12 × 1021 cm-3), resulting in strong absorption of IRB due to the plasmon resonance absorption. The optimal optical design and ITO film thickness were investigated, and the TiO2(SiO2/TiO2)3 multilayer combined with an ITO film thickness of 400 nm was found to provide a high NIR-shielding rate of 94.8%, UVB to UVA-shielding rate of 92.7%, and average visible light transmittance of 68.1%. Further, human skin cells protected by a UV/NIR-shielding coating showed significantly decreased reactive oxygen species generation and inflammatory cytokine expression as compared to those of unprotected cells. The results demonstrate that the development of multifunction coatings have potential for transparent heat insulation windows and human skin protection against UV/IR radiations.
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Affiliation(s)
- Chih-Hao Liang
- R&D Division, Walsin Technology Corporation, Kaohsiung 806, Taiwan;
| | - Ying-Jung Chen
- Department of Fragrance and Cosmetic Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
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Kim MS, Kim JH, Ahn E, Cho Y, Han S, Lee C, Bae G, Oh JS, Kim K, Seo D. Novel functions for 2-phenylbenzimidazole-5-sulphonic acid: Inhibition of ovarian cancer cell responses and tumour angiogenesis. J Cell Mol Med 2020; 24:2688-2700. [PMID: 31958895 PMCID: PMC7028853 DOI: 10.1111/jcmm.14989] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2019] [Revised: 12/19/2019] [Accepted: 12/21/2019] [Indexed: 01/02/2023] Open
Abstract
In this study, we investigated the effects and molecular mechanisms of 2-phenylbenzimidazole-5-sulphonic acid (PBSA), an ultraviolet B protecting agent used in sunscreen lotions and moisturizers, on ovarian cancer cell responses and tumour angiogenesis. PBSA treatment markedly blocked mitogen-induced invasion through down-regulation of matrix metalloproteinase (MMP) expression and activity in ovarian cancer SKOV-3 cells. In addition, PBSA inhibited mitogen-induced cell proliferation by suppression of cyclin-dependent kinases (Cdks), but not cyclins, leading to pRb hypophosphorylation and G1 phase cell cycle arrest. These anti-cancer activities of PBSA in ovarian cancer cell invasion and proliferation were mediated by the inhibition of mitogen-activated protein kinase kinase 3/6-p38 mitogen-activated protein kinase (MKK3/6-p38MAPK ) activity and subsequent down-regulation of MMP-2, MMP-9, Cdk4, Cdk2 and integrin β1, as evidenced by treatment with p38MAPK inhibitor SB203580. Furthermore, PBSA suppressed the expression and secretion of vascular endothelial growth factor in SKOV-3 cells, leading to inhibition of capillary-like tubular structures in vitro and angiogenic sprouting ex vivo. Taken together, our results demonstrate the pharmacological effects and molecular targets of PBSA on modulating ovarian cancer cell responses and tumour angiogenesis, and suggest further evaluation and development of PBSA as a promising chemotherapeutic agent for the treatment of ovarian cancer.
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Affiliation(s)
- Min Su Kim
- Department of PharmacyCollege of PharmacyDankook UniversityCheonanKorea
| | - Jae Hyeon Kim
- Department of PharmacyCollege of PharmacyDankook UniversityCheonanKorea
| | - Eun‐Kyung Ahn
- BiocenterGyeonggi Business & Science AcceleratorSuwonKorea
| | - Young‐Rak Cho
- BiocenterGyeonggi Business & Science AcceleratorSuwonKorea
| | - Surim Han
- Department of ChemistryCollege of Natural ScienceDankook UniversityCheonanKorea
| | - Choong‐Hyun Lee
- Department of PharmacyCollege of PharmacyDankook UniversityCheonanKorea
| | - Gyu‐Un Bae
- Department of PharmacyCollege of PharmacySookmyung Women’s UniversitySeoulKorea
| | - Joa Sub Oh
- Department of PharmacyCollege of PharmacyDankook UniversityCheonanKorea
| | - Kyu‐Bong Kim
- Department of PharmacyCollege of PharmacyDankook UniversityCheonanKorea
| | - Dong‐Wan Seo
- Department of PharmacyCollege of PharmacyDankook UniversityCheonanKorea
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Wang WH, Liang HT, Yang-Wang YT, Shih CJ. Synthesis of hierarchically mesoporous silica with encapsulated avobenzone as a UV protection filter. RSC Adv 2020; 10:15846-15852. [PMID: 35493675 PMCID: PMC9052382 DOI: 10.1039/d0ra01837f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 04/13/2020] [Indexed: 12/13/2022] Open
Abstract
In this study, hierarchically mesoporous silica (HMS) with properties such as high specific surface area, high photostability, and no cellular toxicity was synthesized. The synthesized silica can be considered as an excellent carrier candidate material. Through the use of nitrogen adsorption and desorption analysis, the shape of the hysteresis loop implied the presence of mesoporous structures in the HMS powder. In addition, the encapsulation efficiency was more than 90%. These results showed that avobenzone could be encapsulated into the HMS powder because of its high specific surface area and pore volume. Additionally, X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), thermal gravimetric analysis (TGA), and UV-visible (Vis) spectrophotometry were used to prove that the hierarchically mesoporous silica was able to effectively encapsulate avobenzone. In addition, the new synthetic sunscreen kept its excellent UVA absorption properties after being encapsulated. This study provides a preparing method for mesoporous silica to effectively encapsulate with avobenzone.![]()
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Affiliation(s)
- Wei-Hsun Wang
- Department of Orthopedic Surgery
- Changhua Christian Hospital
- Changhua
- Taiwan
- School of Medicine
| | - Hsin-Tung Liang
- Department of Fragrance and Cosmetic Science
- College of Pharmacy
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Yuan-Ting Yang-Wang
- Department of Fragrance and Cosmetic Science
- College of Pharmacy
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
| | - Chi-Jen Shih
- Department of Fragrance and Cosmetic Science
- College of Pharmacy
- Kaohsiung Medical University
- Kaohsiung 80708
- Taiwan
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7
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Ghosh R, Roy K, Subba A, Mandal P, Basak S, Kundu M, Roy MN. Case to case study for exploring inclusion complexes of an anti-diabetic alkaloid with α and β cyclodextrin molecules for sustained dischargement. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2019.126988] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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8
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Zhang H, Liu X, Fu S, Chen Y. Fabrication of Light-Colored Lignin Microspheres for Developing Natural Sunscreens with Favorable UV Absorbability and Staining Resistance. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b02086] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Hui Zhang
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Xinxin Liu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Shiyu Fu
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
| | - Yuancai Chen
- State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
- College of Environment and Energy, South China University of Technology, Guangzhou, Guangdong 510006, China
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9
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Kundu M, Rahaman H, Roy MN. Physicochemical investigations on non-covalent interactions between Padimate O and cyclodextrin receptors in both solution and solid states. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 218:9-14. [PMID: 30954802 DOI: 10.1016/j.saa.2019.03.058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 02/23/2019] [Accepted: 03/18/2019] [Indexed: 06/09/2023]
Abstract
Ultraviolet B (UV-B) radiation is very harmful to human body. It can cause serious health problem mainly skin cancer, sunburn and photo-aging. Padimate O (PMO) is a sunscreen agent. The aim of this work is to form inclusion complexes with α-cyd and β-cyd in both aqueous environment and solid state that established by UV-Vis, FTIR spectroscopy, mass spectra, powder X-ray diffraction pattern and as α-cyd and β-cyd are known to us as good drug vehicles, hence, the experimental results suggest that they can be used as good sunscreen agent carrier and photostabilizer additive for increasing the photostability and other properties of PMO. In solution phase, UV-Vis spectroscopy demonstrated that the entire process of formation of complexes is observed with 1:1 stoichiometry which is further justified by mass spectra. Thermodynamic parameters support the whole process in both cases and it is revealed that β-cyd forms more firmly inclusion complex than α-cyd with PMO. Successful formation of solid inclusion complexes is supported by FTIR spectroscopy and powder-XRD. The enhancement of the thermal stability of the α-cyd/PMO and β-cyd/PMO complexes is demonstrated by TGA study.
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Affiliation(s)
- Mitali Kundu
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Habibur Rahaman
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
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10
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Photostabilization strategies of photosensitive drugs. Int J Pharm 2018; 541:19-25. [DOI: 10.1016/j.ijpharm.2018.02.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 02/07/2018] [Accepted: 02/09/2018] [Indexed: 02/03/2023]
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11
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Cha R, Li J, Liu Y, Zhang Y, Xie Q, Zhang M. Fe3O4 nanoparticles modified by CD-containing star polymer for MRI and drug delivery. Colloids Surf B Biointerfaces 2017; 158:213-221. [DOI: 10.1016/j.colsurfb.2017.06.049] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 06/09/2017] [Accepted: 06/29/2017] [Indexed: 12/19/2022]
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12
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Kundu M, Roy MN. Subsistence of inclusion complex via assembly of a drug into cyclic oligosaccharide: Its formation, mechanism, behaviour and importance. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 183:332-338. [PMID: 28458238 DOI: 10.1016/j.saa.2017.04.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 03/30/2017] [Accepted: 04/17/2017] [Indexed: 06/07/2023]
Abstract
The aim of this present work is to make soluble DEPM in aqueous medium through the formation inclusion complex into the hydrophobic hollow space of β-cyclodextrin (β-Cyd) which will provide a novel approach for designing drug delivery system in aqueous medium. The study of supramolecular complexation of DEPM with β-Cyd has been designed in both solution and solid state. In solution phase the evidences of the presence of non-covalent interactions in inclusion complex with 1:1 stoichiometry behaviour are obtained by investigating the UV-spectroscopy. The resultant solid of DEPM and β-Cyd is established by 1H NMR, FTIR, powder XRD and SEM techniques. So, β-Cyd has the ability to encapsulate DEPM into their core without formation any covalent bonds and also increases the bioavailability of the water insoluble DEPM drug.
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Affiliation(s)
- Mitali Kundu
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India
| | - Mahendra Nath Roy
- Department of Chemistry, University of North Bengal, Darjeeling 734013, India.
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13
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Panda S, Nayak S. Antibacterial, antioxidant and anthelmintic studies of inclusion complexes of some 4-arylidenamino-5-phenyl-4H-1,2,4-triazole-3-thiols. Supramol Chem 2015. [DOI: 10.1080/10610278.2015.1075533] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Sunakar Panda
- P.G. Department of Chemistry, Berhampur University, Bhanjabihar, Ganjam, Odisha760007, India
| | - Sashikanta Nayak
- P.G. Department of Chemistry, Berhampur University, Bhanjabihar, Ganjam, Odisha760007, India
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14
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Preparation, spectroscopy and molecular modelling studies of the inclusion complex of cordycepin with cyclodextrins. Carbohydr Res 2015; 406:55-64. [DOI: 10.1016/j.carres.2015.01.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2014] [Revised: 01/13/2015] [Accepted: 01/14/2015] [Indexed: 11/18/2022]
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15
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Maniyazagan M, Mohandoss S, Sivakumar K, Stalin T. N-phenyl-1-naphthylamine/β-cyclodextrin inclusion complex as a new fluorescent probe for rapid and visual detection of Pd(2+). SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 133:73-79. [PMID: 24929318 DOI: 10.1016/j.saa.2014.04.183] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2014] [Revised: 04/20/2014] [Accepted: 04/23/2014] [Indexed: 06/03/2023]
Abstract
Inclusion complex between N-phenyl-1-naphthylamine (NPN) and β-cyclodextrin (β-CD) was studied by FT-IR, (1)H and 2D NMR, XRD, FT-Raman, SEM and DSC techniques. The formation of 1:1 stoichiometric inclusion complex of NPN with β-CD was proposed based on the Nuclear magnetic resonance spectroscopy and Molecular docking study. The molecular encapsulation of host-guest inclusion complex based on simple chemosensor has high selectivity and sensitivity for the determination of Pd(2+) ion. Host-guest inclusion complex as a spectroscopic probe is used for the detection of transition metal cation Pd(2+). Coordination of this Pd(2+) with (NPN/β-CD) inclusion complex exhibited a noticeable color change in the solution state it used for naked-eye detection.
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Affiliation(s)
- Munisamy Maniyazagan
- Department of Industrial Chemistry, School Chemical Sciences, Alagappa University, Karaikudi 03, Tamil Nadu, India
| | - Sonaimuthu Mohandoss
- Department of Industrial Chemistry, School Chemical Sciences, Alagappa University, Karaikudi 03, Tamil Nadu, India
| | | | - Thambusamy Stalin
- Department of Industrial Chemistry, School Chemical Sciences, Alagappa University, Karaikudi 03, Tamil Nadu, India.
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Mesoporous silica aerogel as a drug carrier for the enhancement of the sunscreen ability of benzophenone-3. Colloids Surf B Biointerfaces 2014; 115:191-6. [DOI: 10.1016/j.colsurfb.2013.11.011] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2013] [Revised: 10/25/2013] [Accepted: 11/05/2013] [Indexed: 12/27/2022]
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17
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Blasi P, Schoubben A, Giovagnoli S, Rossi C, Ricci M. The real value of novel particulate carriers for sunscreen formulation. ACTA ACUST UNITED AC 2014. [DOI: 10.1586/edm.11.57] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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18
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Srinivasan K, Stalin T, Sivakumar K. Spectral and electrochemical study of host-guest inclusion complex between 2,4-dinitrophenol and β-cyclodextrin. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2012; 94:89-100. [PMID: 22516119 DOI: 10.1016/j.saa.2012.03.066] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Revised: 03/07/2012] [Accepted: 03/22/2012] [Indexed: 05/31/2023]
Abstract
The formation of host-guest inclusion complex of 2,4-dinitrophenol (2,4-DNP) with nano-hydrophobic cavity of β-cyclodextrin (β-CD) in solution phase was studied by UV-visible spectrophotometer and electrochemical method (cyclic voltammetry, CV). The prototropic behaviors of 2,4-DNP with and without β-CD and the ground state acidity constant (pK(a)) of host-guest inclusion complex (2,4-DNP-β-CD) were studied. The binding constant of inclusion complex at 303K was calculated using Benesi-Hildebrand plot and thermodynamic parameter (ΔG) was also calculated. The solid inclusion complex formation between β-CD and 2,4-DNP was confirmed by (1)H NMR, FT-IR, XRD and SEM analysis. A schematic representation of this inclusion process is proposed by molecular docking studies using PatchDock server.
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Affiliation(s)
- K Srinivasan
- Photoelectrochemical Research Lab, School of Chemical Sciences, Department of Industrial Chemistry, Alagappa University, Karaikudi 630003, Tamilnadu, India
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Soares da Silva LFJ, do Carmo FA, de Almeida Borges VR, Monteiro LM, Rodrigues CR, Cabral LM, de Sousa VP. Preparation and evaluation of lidocaine hydrochloride in cyclodextrin inclusion complexes for development of stable gel in association with chlorhexidine gluconate for urogenital use. Int J Nanomedicine 2011; 6:1143-54. [PMID: 21822378 PMCID: PMC3148842 DOI: 10.2147/ijn.s20409] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Indexed: 11/23/2022] Open
Abstract
Inclusions of lidocaine hydrochloride in cyclodextrins were prepared to obtain stable complexes compatible for association with chlorhexidine in a new gel formulation for use in urogenital applications. Two cyclodextrins, β-cyclodextrin and methyl-β-cyclodextrin, were used for encapsulating lidocaine hydrochloride through solubilization and kneading techniques. The lidocaine–cyclodextrin complexes were characterized by ultraviolet spectroscopy, Fourier transform infrared spectroscopy, differential scanning calorimetry, and X-ray diffraction. The results revealed that the techniques generated good yields of inclusion products that maintained the functional properties of lidocaine. In addition, the inclusion products obtained improved the compatibility of lidocaine hydrochloride with chlorhexidine in solution and a gel formulation. The gel formulation displayed desirable rheological and physicochemical properties. The results presented here are the first description of the inclusion of lidocaine with cyclodextrins, which improves compatibility with chlorhexidine in formulations for simultaneous delivery.
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Srinivasan K, Kayalvizhi K, Sivakumar K, Stalin T. Study of inclusion complex of β-cyclodextrin and diphenylamine: photophysical and electrochemical behaviors. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 79:169-178. [PMID: 21459035 DOI: 10.1016/j.saa.2011.02.030] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2010] [Revised: 02/06/2011] [Accepted: 02/16/2011] [Indexed: 05/30/2023]
Abstract
The photophysical, electrochemical and photoprototropic behaviors of diphenylamine (DPA) in aqueous β-cyclodextrin (β-CD) solution have been investigated using absorption spectroscopy and cyclic voltammetric techniques. Absorption of the neutral and cationic form of DPA is enhanced due to the formation of a 1:1 complex with β-CD. The formation of this complex has been confirmed by Benesi-Hildebrand plot and docking studies by RasMol tool methods. The solid complex of β-CD with DPA is investigated by FT-IR, XRD and AFM methods. The thermodynamic parameters (ΔG, ΔH and ΔS) of inclusion process are also determined. The pK(a) values of neutral-monocation equilibria have been determined with absorption (conjugate acid-base) titrations. A mechanism is proposed to explain the inclusion process.
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Affiliation(s)
- K Srinivasan
- Department of Industrial Chemistry, Alagappa University, Karaikudi, Tamilnadu, India
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Rajamohan R, Kothai Nayaki S, Swaminathan M. A Study on Host–Guest Complexation of 5-Amino-2-Mercaptobenzimidazole with β-Cyclodextrin. J SOLUTION CHEM 2011. [DOI: 10.1007/s10953-011-9691-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Srinivasan K, Vaheethabanu J, Manisankar P, Stalin T. Study of inclusion complex of β-cyclodextrin and Ortho-Anisidine; photophysical and electrochemical behaviors. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2010.12.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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The sunscreen agent 2-phenylbenzimidazole-5-sulfonic acid photosensitizes the formation of oxidized guanines in cellulo after UV-A or UV-B exposure. J Invest Dermatol 2010; 130:2463-71. [PMID: 20574440 DOI: 10.1038/jid.2010.150] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The sunscreen agent 2-phenylbenzimidazole-5-sulfonic acid (PBSA) is water soluble and is widely used in the cosmetic industry because it absorbs strongly at UV-B wavelengths. Previous studies have shown that PBSA, photoexcited by UV-B, oxidizes guanine bases in vitro. Because of its potential phototoxic effect, it is important to determine whether PBSA photosensitizes in cellulo the formation of oxidatively generated DNA damage on UV exposure. For this purpose, we investigated, in vitro and in cellulo, the effect of PBSA on DNA bases after UV-A or UV-B irradiation. To monitor the formation of oxidized bases and cyclobutane pyrimidine dimers (CPDs), DNA was digested either with FaPy-DNA glycosylase and endonuclease III or with T4 endonuclease V and photolyase, then analyzed by means of neutral- and glyoxal-agarose gel electrophoresis and ligation-mediated PCR. In cellulo, we found that PBSA provided good protection against CPD formation after UV-B exposure. However, PBSA also photosensitized oxidized guanines on UV-A and UV-B irradiation. Our results indicate that PBSA has the potential to function as a double-edged sword toward DNA and question its suitability for sunscreen applications.
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Coelho GLN, Dornelas CB, Soares KCC, dos Santos EP, Vergnanini AL, dos Santos TC, Rodrigues CR, Castro HC, Dias LRS, Cabral LM. Preparation and Evaluation of Inclusion Complexes of Commercial Sunscreens in Cyclodextrins and Montmorillonites: Performance and Substantivity Studies. Drug Dev Ind Pharm 2008; 34:536-46. [DOI: 10.1080/03639040701831769] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Hubaud JC, Bombarda I, Decome L, Wallet JC, Gaydou EM. Synthesis and spectroscopic examination of various substituted 1,3-dibenzoylmethane, active agents for UVA/UVB photoprotection. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2008; 92:103-9. [DOI: 10.1016/j.jphotobiol.2008.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2008] [Revised: 04/25/2008] [Accepted: 05/05/2008] [Indexed: 11/29/2022]
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León Z, Balaguer A, Chisvert A, Salvador A, Herráez M, Díez O. A reversed-phase ion-interaction chromatographic method for in-vitro estimation of the percutaneous absorption of water-soluble UV filters. Anal Bioanal Chem 2008; 391:859-66. [PMID: 18365182 DOI: 10.1007/s00216-008-2013-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 01/23/2008] [Accepted: 02/22/2008] [Indexed: 11/30/2022]
Abstract
An analytical method based on ion-interaction chromatography with UV detection for simultaneous in-vitro estimation of the percutaneous absorption of the most used water-soluble UV filters in sunscreen cosmetics is proposed. These UV filters were phenylbenzimidazole sulfonic acid, disodium phenyl dibenzimidazole tetrasulfonate, benzophenone-4, and terephthalylidene dicamphor sulfonic acid. The methodology is based on applying the sunscreen containing the target UV filters to human epidermis in a diffusion cell. Analytes are determined in the receptor solution. To ensure skin integrity, screening of the cells was carried out by analytical determination of a marker. Analytical variables such as percentage ethanol, concentration of ion-pairing agent, pH of the mobile phase, and temperature were studied in order to achieve high resolution of the chromatographic peaks in the lowest possible time of analysis. The conditions selected consisted of a mobile phase composed of 35:65 (v/v) ethanol-ammonium acetate buffer solution (pH 4, containing 50 mmol L(-1) tetra-n-butylammonium bromide). The chromatographic determination was carried out with the analytical column at 50 degrees C. UV detection was carried out at the maximum absorption wavelength for each analyte. The limit of detection (3s(y/x)/b) ranged from 16 to 65 ng mL(-1), depending on the analyte.
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Affiliation(s)
- Z León
- Departamento de Química Analítica, Facultad de Quimica, Universitat de València, Doctor Moliner St. 50, Burjassot, 46100, Valencia, Spain
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Lund L, Ley RD, Felton LA, Timmins GS. Determination of Wavelength-Specific UV Protection Factors of Sunscreens in Intact Skin by EPR Measurement of UV-Induced Reactive Melanin Radical. Photochem Photobiol 2007; 83:952-7. [PMID: 17645669 DOI: 10.1111/j.1751-1097.2007.00089.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
There remains an unmet need for skin tissue-based assays for the measurement of the UVA protection and efficacy of sunscreens. Here we describe development of a novel electron paramagnetic resonance assay that uses the photogeneration of reactive melanin radical as a measure of UV light penetration to melanocytes in situ in skin. We have used areas of focal melanocytic hyperplasia in the skin of Monodelphis domestica to model the human nevus. We show that we are able to use this assay to determine the monochromatic protection factors (mPF) of research and commercial sunscreens at specific narrow wavebands of UVB, UVA and blue visible light. Both commercial sunscreens, a sun protection factor (SPF) 4 and an SPF 30 product, had mPFs in the UVB range that correlated well with their claimed SPF. However, their mPF in the UVA ranges were only about one-third of claimed SPF. This technique can be used to design and assay sunscreens with optimally balanced UVA and UVB protection.
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Affiliation(s)
- Leslie Lund
- College of Pharmacy, University of New Mexico Health Sciences Center, Albuquerque, NM, USA
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Scalia S, Tursilli R, Iannuccelli V. Complexation of the sunscreen agent, 4-methylbenzylidene camphor with cyclodextrins: effect on photostability and human stratum corneum penetration. J Pharm Biomed Anal 2007; 44:29-34. [PMID: 17291707 DOI: 10.1016/j.jpba.2007.01.016] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2006] [Revised: 01/09/2007] [Accepted: 01/10/2007] [Indexed: 10/23/2022]
Abstract
The interaction between the sunscreen agent, 4-methylbenzylidene camphor (4-MBC) and hydrophilic alpha-, beta- and gamma-cyclodextrin derivatives was investigated in water by phase-solubility analysis. Among the studied cyclodextrins, random methyl-beta-cyclodextrin (RM-beta-CD) had the greatest solubilizing activity. The complexation of the sunscreen agent with RM-beta-CD was confirmed by nuclear magnetic resonance spectroscopy and powder X-ray diffractometry. The light-induced decomposition of 4-MBC in emulsion vehicles was markedly decreased by complexation with RM-beta-CD (the extent of degradation, determined by HPLC, was 7.1% for the complex compared to 21.1% for free 4-MBC). The influence of RM-beta-CD on the human skin penetration of the sunscreen was investigated in vivo using the tape stripping method, a useful procedure for selectively removing the outermost cutaneous layers. Considerable quantities (21.2-25.1% of the applied dose) of 4-MBC permeated in the stratum corneum. However, no significant differences in the amounts of UV filter in the 10 first strips of the horny layer were observed between the formulations containing 4-MBC free or complexed with RM-beta-CD. Therefore, RM-beta-CD complexation did not alter the retention of 4-MBC in the superficial layers of the stratum corneum, where its action is more desirable.
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Affiliation(s)
- Santo Scalia
- Dipartimento di Scienze Farmaceutiche, Università di Ferrara, via Fossato di Mortara 17, 44100 Ferrara, Italy.
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Chen M, Diao G, Zhang E. Study of inclusion complex of beta-cyclodextrin and nitrobenzene. CHEMOSPHERE 2006; 63:522-9. [PMID: 16324733 DOI: 10.1016/j.chemosphere.2005.08.033] [Citation(s) in RCA: 84] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2005] [Revised: 08/01/2005] [Accepted: 08/01/2005] [Indexed: 05/05/2023]
Abstract
beta-cyclodextrin can react with nitrobenzene to form an inclusion complex which is characterized by (1)H NMR and powder X-ray diffractometry. The ratio of beta-CD to NB in inclusion complex is determined as 1:1. At 25 degrees C, the dissociated constant, K(D), of the inclusion complex is measured as 6.5 x 10(-3) M in neutral solution (pH=7.0), but in alkali (pH=13.5), K(D) is 3.2 x 10(-2) M which is much larger than that measured in neutral.
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Affiliation(s)
- Ming Chen
- College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, People's Republic of China
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Iannuccelli V, Sala N, Tursilli R, Coppi G, Scalia S. Influence of liposphere preparation on butyl-methoxydibenzoylmethane photostability. Eur J Pharm Biopharm 2006; 63:140-5. [PMID: 16531026 DOI: 10.1016/j.ejpb.2006.01.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2005] [Revised: 01/11/2006] [Accepted: 01/11/2006] [Indexed: 11/20/2022]
Abstract
The incorporation of butyl-methoxydibenzoylmethane (BMDBM), one of the most efficient and frequently used UV-A blockers, into lipospheres was examined in order to decrease the light-induced sunscreen degradation. Lipospheres, obtained by the melt technique and using tristearin as the lipid material and hydrogenated phosphatidylcholine as the emulsifier, showed proper features in terms of size (10-40 microm), BMDBM loading level (21.63% +/- 0.90%, w/w) and physical state. Photolysis studies, involving irradiation of lipospheres with simulated sunlight before and after their introduction in emulsion formulations, demonstrated a relevant enhancement of the encapsulated sunscreen photostability in comparison with unencapsulated BMDBM.
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Affiliation(s)
- Valentina Iannuccelli
- Department of Pharmaceutical Sciences, University of Modena and Reggio Emilia, Modena, Italy
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Scalia S, Tursilli R, Bianchi A, Nostro PL, Bocci E, Ridi F, Baglioni P. Incorporation of the sunscreen agent, octyl methoxycinnamate in a cellulosic fabric grafted with β-cyclodextrin. Int J Pharm 2006; 308:155-9. [PMID: 16359835 DOI: 10.1016/j.ijpharm.2005.11.007] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2005] [Revised: 10/25/2005] [Accepted: 11/05/2005] [Indexed: 11/17/2022]
Abstract
The aim of the study was to investigate the incorporation of the sunscreen agent, octyl methoxycinnamate into cyclodextrin cavities covalently bound to cloth fibres. Tencel, a cellulosic fabric, was grafted with beta-cyclodextrin molecules through reaction with monochlorotriazinyl-beta-cyclodextrin (beta-CDMCT). The finished and untreated textiles were soaked in water-methanol mixtures containing 2% (v/v) of sunscreen agent and subsequently subjected to several washing cycles. The unmodified and modified fabrics were characterized by UV spectrophotometry and thermogravimetric analysis. The level of octyl methoxycinnamate entrapped in the Tencel tissue was determined by high-performance liquid chromatography and was found to be much higher (0.0203%, w/w) for the textile functionalised with beta-CDMCT compared to the unmodified fabric (0.0025%, w/w). In addition, spectrophotometric assessment of UV transmission through the fabric samples using the Transpore test showed that the in vitro sun protection factor of the textile support was markedly enhanced (3.2-fold increase) by impregnation with octyl methoxycinnamate of the beta-CDMCT grafted textile. Hence, even after repeated washings, the beta-CD finished fabric exhibits higher sunscreen agent retention and photoprotective properties than the unmodified textile material.
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Affiliation(s)
- Santo Scalia
- Department of Pharmaceutical Sciences, University of Ferrara, via Fossato di Mortara, 44100 Ferrara, Italy.
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Abstract
Ultraviolet (UV) filters are the active ingredients in sunscreens. The concentration and combination of UV filters determine the efficacy of sunscreens as measured by sun protection factor. The safety of individual UV filters, and, more generally, sunscreen products, is a matter of a few related components: objective toxicologic evaluation, phototoxicologic potential, and human health consequences of using products that may reduce some but not all of the solar UV. Of 16 UV filters approved by the US Food and Drug Administration, 9 are used in different combinations in the most currently marketed sunscreens. Most of these compounds are considered safe and effective alone or in combination with other UV filters based on extensive toxicologic/phototoxicologic evaluations and market history. The benefits from proper use of sunscreens outweigh real or perceived human health concerns, establishing a favorable benefit-to-risk ratio. Future UV filters will require complete human safety evaluations alone and in combination with select benchmark ingredients.
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Affiliation(s)
- J F Nash
- Central Product Safety, The Procter and Gamble Company, Cincinnati, OH 45241, USA.
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Simeoni S, Scalia S, Tursilli R, Benson H. Influence of Cyclodextrin Complexation on the in vitro Human Skin Penetration and Retention of the Sunscreen Agent, Oxybenzone. J INCL PHENOM MACRO 2005. [DOI: 10.1007/s10847-005-9002-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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