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Wang Y, Zhou Q, Zheng J, Xiong H, Zhao L, Xu Y, Bai C. Fabricating pectin and chitosan double layer coated liposomes to improve physicochemical stability of beta-carotene and alter its gastrointestinal fate. Int J Biol Macromol 2023; 247:125780. [PMID: 37433420 DOI: 10.1016/j.ijbiomac.2023.125780] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 06/26/2023] [Accepted: 07/08/2023] [Indexed: 07/13/2023]
Abstract
To improve storage stability and gastrointestinal (GI) stability of liposomes, pectin and chitosan double layer coated liposome (P-C-L) was proposed and optimized using electrostatic deposition technique. The physical-chemical properties and GI fate of the carrier were then investigated in comparison to that of chitosan coated liposomes (C-L) and un-coated liposomes (L). The results showed P-C-L was successfully prepared at 0.2 % chitosan and 0.06 % pectin. It was hydrogen bonds between the amino groups in chitosan and liposomal interfacial region, and the interaction between the carboxyl groups in pectin layer and amino groups in chitosan layer maintained the structure of P-C-L after absorption by electrostatic interaction. The double layer coatings could improve chemical stability of the encapsulated β-carotene (βC), as well as the thermal stability of liposomes. What's more, the permeability of liposomal bilayers and βC release mechanism in simulated GI fluids was changed by the polymer coating. P-C-L exhibited better controlled release for βC than C-L and L, and displayer beneficial effect on delivering bioactive agents passing through intensity tract. This may assistant developing more efficient delivery system for bioactive agent.
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Affiliation(s)
- Yin Wang
- National R&D Branch Center for Freshwater Fish Processing, College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Qing Zhou
- National R&D Branch Center for Freshwater Fish Processing, College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Jingxia Zheng
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Hua Xiong
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China
| | - Li Zhao
- National R&D Branch Center for Freshwater Fish Processing, College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Yan Xu
- National R&D Branch Center for Freshwater Fish Processing, College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330013, China
| | - Chunqing Bai
- National R&D Branch Center for Freshwater Fish Processing, College of Life Science, Jiangxi Science and Technology Normal University, Nanchang 330013, China.
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2
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Guleken Z, Çeçen S, Ceylan Z, Jakubczyk P, Depciuch J. Application of Fourier transform infrared spectroscopy to detect biochemical changes in blood serum of obese patients. JOURNAL OF BIOPHOTONICS 2023; 16:e202200388. [PMID: 36866796 DOI: 10.1002/jbio.202200388] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/24/2023] [Accepted: 02/27/2023] [Indexed: 06/07/2023]
Abstract
Obesity is frequently a significant risk factor for multiple obesity-associated diseases that have been increasing in prevalence worldwide. Anthropometric data such as body mass index, fat, and fat mass values are assessed for obesity. Therefore, we aimed to propose two Fourier transform infrared (FT-IR) spectral regions, 800-1800 cm-1 and 2700-3000 cm-1 , as sensitive potential band assignments for obesity-related biochemical changes. A total of 134 obese (n = 89) and controls (n = 45) biochemical characteristics and clinical parameters indicative of obesity were evaluated. The FT-IR spectra of dried blood serum were measured. Anthropometric data of the obese have the highest body mass index, %fat, and fat mass values compared to the healthy group (p < 0.01). Also, the triglyceride and high-density lipoprotein cholesterol levels were higher than in healthy subjects (p < 0.01). Principal component analysis (PCA) technique successfully distinguished obese and control groups in the fingerprint, accounting for 98.5% and 99.9% of the total variability (800-1800 cm-1 ) and lipids (2700-3000 cm-1 ) regions presented as 2D and 3D score plots. The loading results indicated that peaks corresponding to phosphonate groups, glucose, amide I, and lipid groups were shifted in the obese group, indicating their potential as biomarkers of obesity. This study suggests that FTIR analysis based on PCA can provide a detailed and reliable method for the analysis of blood serum in obese patients.
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Affiliation(s)
- Zozan Guleken
- Gaziantep University of Islam Science and Technology, Faculty of Medicine, Department of Physiology, Gaziantep, Turkey
| | - Serpil Çeçen
- Health Science University, Hamidiye Faculty of Medicine, Department of Physiology, Istanbul, Turkey
| | - Zeynep Ceylan
- Faculty of Engineering, Department of Industrial Engineering, Samsun University, Samsun, Turkey
| | - Paweł Jakubczyk
- Institute of Physics, University of Rzeszów, Rzeszów, Poland
| | - Joanna Depciuch
- Department of Functional Nanomaterials, Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
- Department of Biochemistry and Molecular Biology, Medical University of Lublin, Lublin, Poland
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3
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Sahin I, Ceylan Ç, Bayraktar O. Ruscogenin interacts with DPPC and DPPG model membranes and increases the membrane fluidity: FTIR and DSC studies. Arch Biochem Biophys 2023; 733:109481. [PMID: 36522815 DOI: 10.1016/j.abb.2022.109481] [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: 09/10/2022] [Revised: 11/14/2022] [Accepted: 11/24/2022] [Indexed: 11/27/2022]
Abstract
Ruscogenin, a kind of steroid saponin, has been shown to have significant anti-oxidant, anti-inflammatory, and anti-thrombotic characteristics. Furthermore, it has the potential to be employed as a medicinal medication to treat a variety of acute and chronic disorders. The interaction of a drug molecule with cell membranes can help to elucidate its system-wide protective and therapeutic effects, and it's also important for its pharmacological activity. The molecular mechanism by which ruscogenin affects membrane architecture is still a mystery. Ruscogenin's interaction with zwitterionic dipalmitoyl phosphatidylcholine (DPPC) and anionic dipalmitoyl phosphatidylglycerol (DPPG) multilamellar vesicles (MLVs) was studied utilizing two non-invasive approaches, including: Fourier Transform Infrared (FTIR) spectroscopy and Differential Scanning Calorimetry. Ruscogenin caused considerable alterations in the phase transition profile, order, dynamics and hydration state of head groups and glycerol backbone of DPPC and DPPG MLVs at all concentrations. The DSC results indicated that the presence of ruscogenin decreased the main phase transition temperature (Tm) and enthalpy (ΔH) values of both membranes and increased half height width of the main transition (ΔT1/2). The FTIR results demonstrated that all concentrations (1, 3, 6, 9, 15, 24 and 30 mol percent) of ruscogenin disordered the DPPC MLVs both in the gel and liquid crystalline phases while it increased the order of DPPG MLVs in the liquid crystalline phase. Moreover, ruscogenin caused an increase in the dynamics of DPPC and DPPG MLVs in both phases. Additionally, it enhanced the hydration of the head groups of lipids and the surrounding water molecules implying ruscogenin to interact strongly with both zwitterionic and charged model membranes.
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Affiliation(s)
- Ipek Sahin
- Department of Physics, Faculty of Science, Ege University, 35100, Bornova, İzmir, Turkey.
| | - Çağatay Ceylan
- Department of Food Engineering, Faculty of Engineering, İzmir Institute of Technology, Urla, İzmir, Turkey
| | - Oguz Bayraktar
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100, Bornova, İzmir, Turkey
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4
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Santhosh PB, Genova J, Slavkova Z, Chamati H. Influence of melatonin on the structural and thermal properties of SOPC lipid membranes. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.129081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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5
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Ma Y, Xu J, Jiang S, Zeng M. Effect of chitosan coating on the properties of nanoliposomes loaded with oyster protein hydrolysates: Stability during spray-drying and freeze-drying. Food Chem 2022; 385:132603. [DOI: 10.1016/j.foodchem.2022.132603] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 01/26/2022] [Accepted: 02/27/2022] [Indexed: 01/22/2023]
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6
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Çetinel ZÖ, Bilge D. The effects of miltefosine on the structure and dynamics of DPPC and DPPS liposomes mimicking normal and cancer cell membranes: FTIR and DSC studies. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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7
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Civelek N, Bilge D. Investigating the Molecular Effects of Curcumin by Using Model Membranes. FOOD BIOPHYS 2022. [DOI: 10.1007/s11483-021-09710-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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8
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The interaction of steroids with phospholipid bilayers and membranes. Biophys Rev 2021; 14:163-179. [DOI: 10.1007/s12551-021-00918-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 11/18/2021] [Indexed: 12/13/2022] Open
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9
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Schlich M, Musazzi UM, Campani V, Biondi M, Franzé S, Lai F, De Rosa G, Sinico C, Cilurzo F. Design and development of topical liposomal formulations in a regulatory perspective. Drug Deliv Transl Res 2021; 12:1811-1828. [PMID: 34755281 PMCID: PMC8577404 DOI: 10.1007/s13346-021-01089-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/25/2021] [Indexed: 01/29/2023]
Abstract
The skin is the absorption site for drug substances intended to treat loco-regional diseases, although its barrier properties limit the permeation of drug molecules. The growing knowledge of the skin structure and its physiology have supported the design of innovative nanosystems (e.g. liposomal systems) to improve the absorption of poorly skin-permeable drugs. However, despite the dozens of clinical trials started, few topically applied liposomal systems have been authorized both in the EU and the USA. Indeed, the intrinsic complexity of the topically applied liposomal systems, the higher production costs, the lack of standardized methods and the more stringent guidelines for assessing their benefit/risk balance can be seen as causes of such inefficient translation. The present work aimed to provide an overview of the physicochemical and biopharmaceutical characterization methods that can be applied to topical liposomal systems intended to be marketed as medicinal products, and the current regulatory provisions. The discussion highlights how such methodologies can be relevant for defining the critical quality attributes of the final product, and they can be usefully applied based on the phase of the life cycle of a liposomal product: to guide the formulation studies in the early stages of development, to rationally design preclinical and clinical trials, to support the pharmaceutical quality control system and to sustain post-marketing variations. The provided information can help define harmonized quality standards able to overcome the case-by-case approach currently applied by regulatory agencies in assessing the benefit/risk of the topically applied liposomal systems.
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Affiliation(s)
- Michele Schlich
- Dipartimento Di Scienze Della Vita E Dell'Ambiente, Sezione Scienze del Farmaco, Università Di Cagliari, via Ospedale 72, 09124, Cagliari, Italy.,Laboratory of Nanotechnology for Precision Medicine, Istituto Italiano Di Tecnologia, via Morego 30, 16163, Genoa, Italy
| | - Umberto M Musazzi
- Department of Pharmaceutical Sciences, Università Degli Studi Di Milano, via G. Colombo 71, 20133, Milan, Italy
| | - Virginia Campani
- Dipartimento Di Farmacia, Università Degli Studi Di Napoli Federico II, via D. Montesano 49, 80131, Naples, Italy
| | - Marco Biondi
- Dipartimento Di Farmacia, Università Degli Studi Di Napoli Federico II, via D. Montesano 49, 80131, Naples, Italy
| | - Silvia Franzé
- Department of Pharmaceutical Sciences, Università Degli Studi Di Milano, via G. Colombo 71, 20133, Milan, Italy
| | - Francesco Lai
- Dipartimento Di Scienze Della Vita E Dell'Ambiente, Sezione Scienze del Farmaco, Università Di Cagliari, via Ospedale 72, 09124, Cagliari, Italy
| | - Giuseppe De Rosa
- Dipartimento Di Farmacia, Università Degli Studi Di Napoli Federico II, via D. Montesano 49, 80131, Naples, Italy
| | - Chiara Sinico
- Dipartimento Di Scienze Della Vita E Dell'Ambiente, Sezione Scienze del Farmaco, Università Di Cagliari, via Ospedale 72, 09124, Cagliari, Italy
| | - Francesco Cilurzo
- Department of Pharmaceutical Sciences, Università Degli Studi Di Milano, via G. Colombo 71, 20133, Milan, Italy.
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10
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Björkgren I, Mendoza S, Chung DH, Haoui M, Petersen NT, Lishko PV. The epithelial potassium channel Kir7.1 is stimulated by progesterone. J Gen Physiol 2021; 153:212552. [PMID: 34387656 PMCID: PMC8374857 DOI: 10.1085/jgp.202112924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/29/2021] [Indexed: 11/20/2022] Open
Abstract
The choroid plexus (CP) epithelium secretes cerebrospinal fluid and plays an important role in healthy homeostasis of the brain. CP function can be influenced by sex steroid hormones; however, the precise molecular mechanism of such regulation is not well understood. Here, using whole-cell patch-clamp recordings from male and female murine CP cells, we show that application of progesterone resulted in specific and strong potentiation of the inwardly rectifying potassium channel Kir7.1, an essential protein that is expressed in CP and is required for survival. The potentiation was progesterone specific and independent of other known progesterone receptors expressed in CP. This effect was recapitulated with recombinant Kir7.1, as well as with endogenous Kir7.1 expressed in the retinal pigment epithelium. Current-clamp studies further showed a progesterone-induced hyperpolarization of CP cells. Our results provide evidence of a progesterone-driven control of tissues in which Kir7.1 is present.
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Affiliation(s)
- Ida Björkgren
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Sarah Mendoza
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Dong Hwa Chung
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Monika Haoui
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Natalie True Petersen
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
| | - Polina V Lishko
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA
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11
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Wang F, Pu C, Liu M, Li R, Sun Y, Tang W, Sun Q, Tian Q. Fabrication and characterization of walnut peptides-loaded proliposomes with three lyoprotectants: Environmental stabilities and antioxidant/antibacterial activities. Food Chem 2021; 366:130643. [PMID: 34330031 DOI: 10.1016/j.foodchem.2021.130643] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 07/06/2021] [Accepted: 07/17/2021] [Indexed: 12/26/2022]
Abstract
To protect walnut peptides from harsh external environments during their storage and digestion, proliposomes loaded with walnut peptides were fabricated using sucrose, trehalose, and mannitol as carriers and lyoprotectants. The physicochemical properties, environmental stability, antioxidant/antibacterial activities, and digestion in vitro of the proliposomes were evaluated. The freshly prepared liposomes were uniform in size, but the hydrated proliposomes showed a more uneven size distribution. The lyoprotectants helped maintain favorable liposome shape during lyophilization. Alongside the lyoprotectants, the walnut peptides further stabilized the lipid bilayer. Proliposomes encapsulation didn't impact the peptides' antioxidant activity. Furthermore, walnut peptides-loaded proliposomes exhibited antibacterial activity against Escherichia coli and Staphylococcus aureus. The proliposomes were stable during gastric-phase digestion. The lyoprotectants changed the free fatty acid release behaviors of the proliposomes. These characteristics suggest potential applications for proliposomes as effective delivery systems for biopeptides in food stuffs, thereby protecting bioactivities during storage and passage through the gastrointestinal tract.
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Affiliation(s)
- Fuli Wang
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Chuanfen Pu
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Mengyao Liu
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Risheng Li
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Yue Sun
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Wenting Tang
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China.
| | - Qingjie Sun
- School of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Qin Tian
- National Research Center for Geoanalysis, Beijing 100037, China
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12
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Effects of insecticide acephate on membrane mimetic systems: The role played by electrostatic interactions with lipid polar headgroups. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.115868] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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13
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Ruiz GCM, do Carmo Morato LF, Pazin WM, Milano F, Constantino CJL, Valli L, Giotta L. Chemical and morphological effects of the contraceptive hormone 17 α-ethynylestradiol on fluid lipid membranes. Colloids Surf B Biointerfaces 2021; 204:111794. [PMID: 33940520 DOI: 10.1016/j.colsurfb.2021.111794] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Revised: 03/03/2021] [Accepted: 04/24/2021] [Indexed: 11/30/2022]
Abstract
The lack of studies involving the effects in human health associated with the chronic ingestion of pollutants lead to the path of investigating the action of these compounds in cell membrane models. We demonstrated the interaction (causes and consequences) of the hormone 17 α-ethinylestradiol (EE2) with lipid monolayers (prepared as Langmuir films) and bilayers prepared as small unilamellar vesicles (SUVs) and giant unilamellar vesicles (GUVs). Both fluidity and majority chemical composition of real plasma cell membrane were guaranteed using the phospholipid 1-palmitoil-2-oleoyl-sn-glycero-3-phosphatidylcholine (POPC). Surface pressure-mean molecular area (π-A) isotherms and PM-IRRAS measurements highlighted the strong interaction of EE2 with POPC monolayers, leading the hormone to remain at the air/water interface and promoting its penetration into the phospholipid hydrophobic chains. In the case of bilayers, the entrance of the hormone inside the SUV is likely facilitated by their high curvature. In GUVs, EE2 was responsible for changes in the spherical shape, forming structures like buds and lipid protrusions. The set of results indicates the strong effects of EE2 on fluid membranes, which is an important feature to predict its damage in human cells.
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Affiliation(s)
- Gilia Cristine Marques Ruiz
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil.
| | - Luis Fernando do Carmo Morato
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | - Wallance Moreira Pazin
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | - Francesco Milano
- Institute of Sciences of Food Production, Italian National Research Council (CNR-ISPA), S.P. Lecce-Monteroni, Lecce, I-73100, Italy
| | - Carlos José Leopoldo Constantino
- Department of Physics, School of Technology and Applied Sciences, São Paulo State University (UNESP), Presidente Prudente, SP, Brazil
| | - Ludovico Valli
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, S.P. Lecce-Monteroni, Lecce, I-73100, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Unità di Lecce, S.P. Lecce-Monteroni, Lecce, I-73100, Italy
| | - Livia Giotta
- Department of Biological and Environmental Sciences and Technologies (DiSTeBA), University of Salento, S.P. Lecce-Monteroni, Lecce, I-73100, Italy; Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM), Unità di Lecce, S.P. Lecce-Monteroni, Lecce, I-73100, Italy
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14
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Rakib F, Al-Saad K, Ahmed T, Ullah E, Barreto GE, Md Ashraf G, Ali MHM. Biomolecular alterations in acute traumatic brain injury (TBI) using Fourier transform infrared (FTIR) imaging spectroscopy. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119189. [PMID: 33277210 DOI: 10.1016/j.saa.2020.119189] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 10/27/2020] [Accepted: 11/01/2020] [Indexed: 06/12/2023]
Abstract
Acute injury is one of the substantial stage post-traumatic brain injury (TBI) occurring at the moment of impact. Decreased metabolism, unregulated cerebral blood flow and direct tissue damage are triggered by acute injury. Understating the biochemical alterations associated with acute TBI is critical for brain plasticity and recovery. The objective of this study was to investigate the biochemical and molecular changes in hippocampus, corpus callosum and thalamus brain regions post-acute TBI in rats. Fourier Transform Infrared (FTIR) imaging spectroscopy were used to collect chemical images from control and 3 hrs post-TBI (Marmarou model was used for the TBI induction) rat brains and adjacent sections were treated by hematoxylin and eosin (H&E) staining to correlate with the disruption in tissue morphology and injured brain biochemistry. Our results revealed that the total lipid and total protein content decreased significantly in the hippocampus, corpus callosum and thalamus after brain injury. Reduction in lipid acyl chains (-CH2) associated with an increase in methyl (-CH3) and unsaturated lipids olefin = CH concentrations is observed. Furthermore, there is a decrease in the lipid order (disorder), which leads to an increase in acyl chain fluidity in injured rats. The results suggest acute TBI damages brain tissues mechanically rather than chemical alterations. This will help in assessing successful therapeutic strategy in order to mitigate tissue damage in acute TBI period.
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Affiliation(s)
- Fazle Rakib
- Department of Chemistry and Earth Sciences, Qatar University, Doha, Qatar
| | - Khalid Al-Saad
- Department of Chemistry and Earth Sciences, Qatar University, Doha, Qatar
| | - Tariq Ahmed
- Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Doha, Qatar
| | - Ehsan Ullah
- Qatar Computing Research Institute, Hamad Bin Khalifa University, Doha, Qatar
| | - George E Barreto
- Department of Biological Sciences, University of Limerick, Limerick, Ireland; Health Research Institute, University of Limerick, Limerick, Limerick, Ireland
| | - Ghulam Md Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia; Department of Medical Laboratory Technology, Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, Saudi Arabia.
| | - Mohamed H M Ali
- Qatar Biomedical Research Institute, Hamad Bin Khalifa University, Doha, Qatar.
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15
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Regulating structural and mechanical properties of pectin reinforced liposomes at fluid/solid interface. Food Hydrocoll 2021. [DOI: 10.1016/j.foodhyd.2020.106225] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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16
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Liu W, Kong Y, Ye A, Shen P, Dong L, Xu X, Hou Y, Wang Y, Jin Y, Han J. Preparation, formation mechanism and in vitro dynamic digestion behavior of quercetin-loaded liposomes in hydrogels. Food Hydrocoll 2020. [DOI: 10.1016/j.foodhyd.2020.105743] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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17
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Mecheta A, Hanachi A, Jeandel C, Arab-Tehrany E, Bianchi A, Velot E, Mezali K, Linder M. Physicochemical Properties and Liposomal Formulations of Hydrolysate Fractions of Four Sea Cucumbers (Holothuroidea: Echinodermata) from the Northwestern Algerian Coast. Molecules 2020; 25:E2972. [PMID: 32605291 PMCID: PMC7412306 DOI: 10.3390/molecules25132972] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 06/22/2020] [Accepted: 06/26/2020] [Indexed: 11/21/2022] Open
Abstract
To promote the nutritional and pharmacological values of four sea cucumber species (Holothuria poli, H. tubulosa, H. arguinensis, and H. sanctori), harvested from the Algerian coast, we aimed to study their proximate composition, fatty acid profile and angiotensin-converting enzyme (ACE) inhibitory activity. Their phospholipids were also used to elaborate nanoliposomes and to encapsulate peptides obtained from the same source. After the physico-chemical characterization of nanoliposomes and peptides, in vitro analyses were realized. The four holothurian species showed a high amount of protein (49.26-69.34%), and an impressive lipid profile of 27 fatty acids, mainly composed of polar fatty acids (91.16-93.85%), with a high polyunsaturated fatty acids (PUFA) content (50.90-71.80%), particularly eicosapentaenoic acid (EPA) (5.07-8.76%) and docosahexaenoic acid (DHA) (4.86-7.25%). A high phospholipids amount was also found (55.20-69.85%), mainly composed of phosphatidylcholine (PC) (51.48-58.56%). Their peptide fractions exhibited a high ACE inhibitory activity (IC50 0.30 to 0.51 mg/mL). The results also showed that the nanoliposomes do not induce cytotoxicity and cell death in human MSCs and no perturbation of proliferation for all the times and the tested concentrations, as well as the combined nanoliposomes and hydrolysates (HTS) at a concentration of 0.1 mg/mL. All four sea cucumbers show potential as a new source for omega-3, omega-6, and bioactive peptides.
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Affiliation(s)
- Asmaa Mecheta
- Laboratory of Protection and Development of Coastal Marine Resources and Molecular Systematics, Department of Marine Sciences and Aquaculture, Faculty of Natural and Life Sciences, Abdelhamid Ibn Badis University Mostaganem, BP 227, National road N° 11, Kharrouba 27000, Mostaganem, Algeria
| | - Amine Hanachi
- Laboratoire d’Ingénierie des Biomolécules (LIBio), Lorraine University, 2, Forêt de Haye avenue TSA 40602, 54518 Vandœuvre CEDEX, France; (A.H.); (C.J.); (E.A.-T.)
| | - Carole Jeandel
- Laboratoire d’Ingénierie des Biomolécules (LIBio), Lorraine University, 2, Forêt de Haye avenue TSA 40602, 54518 Vandœuvre CEDEX, France; (A.H.); (C.J.); (E.A.-T.)
| | - Elmira Arab-Tehrany
- Laboratoire d’Ingénierie des Biomolécules (LIBio), Lorraine University, 2, Forêt de Haye avenue TSA 40602, 54518 Vandœuvre CEDEX, France; (A.H.); (C.J.); (E.A.-T.)
| | - Arnaud Bianchi
- UMR 7365 CNRS- Molecular Engineering and Articular Physiopathology, 9 Forêt de Haye Avenue, BP 20199, 54505 Vandœuvre-Lès-Nancy, France;
| | - Emilie Velot
- Faculty of Pharmacy, Laboratory of Practical Work in Physiology, Lorraine University, Brabois-Health Campus, 7 Forêt de Haye Avenue, BP 90170, F-54505 Vandœuvre-lès-Nancy CEDEX, France;
| | - Karim Mezali
- Laboratory of Protection and Development of Coastal Marine Resources and Molecular Systematics, Department of Marine Sciences and Aquaculture, Faculty of Natural and Life Sciences, Abdelhamid Ibn Badis University Mostaganem, BP 227, National road N° 11, Kharrouba 27000, Mostaganem, Algeria
| | - Michel Linder
- Laboratoire d’Ingénierie des Biomolécules (LIBio), Lorraine University, 2, Forêt de Haye avenue TSA 40602, 54518 Vandœuvre CEDEX, France; (A.H.); (C.J.); (E.A.-T.)
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Aleskndrany A, Sahin I. The effects of Levothyroxine on the structure and dynamics of DPPC liposome: FTIR and DSC studies. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2020; 1862:183245. [DOI: 10.1016/j.bbamem.2020.183245] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 02/12/2020] [Accepted: 02/17/2020] [Indexed: 12/20/2022]
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19
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Feng S, Sun Y, Wang P, Sun P, Ritzoulis C, Shao P. Co‐encapsulation of resveratrol and epigallocatechin gallate in low methoxyl pectin‐coated liposomes with great stability in orange juice. Int J Food Sci Technol 2019. [DOI: 10.1111/ijfs.14323] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Simin Feng
- Department of Food Science and Technology Zhejiang University of Technology Hangzhou 310014 PR China
| | - Yuxin Sun
- Department of Food Science and Technology Zhejiang University of Technology Hangzhou 310014 PR China
| | - Pei Wang
- Department of Food Science and Technology Zhejiang University of Technology Hangzhou 310014 PR China
| | - Peilong Sun
- Department of Food Science and Technology Zhejiang University of Technology Hangzhou 310014 PR China
| | - Christos Ritzoulis
- Department of Food Technology ATEI of Thessaloniki 574000 Thessaloniki Greece
| | - Ping Shao
- Department of Food Science and Technology Zhejiang University of Technology Hangzhou 310014 PR China
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20
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Cakmak Arslan G, Severcan F. The effects of radioprotectant and potential antioxidant agent amifostine on the structure and dynamics of DPPC and DPPG liposomes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:1240-1251. [DOI: 10.1016/j.bbamem.2019.04.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 04/17/2019] [Accepted: 04/23/2019] [Indexed: 12/30/2022]
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21
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Interaction of the cholesterol reducing agent simvastatin with zwitterionic DPPC and charged DPPG phospholipid membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2019; 1861:810-818. [DOI: 10.1016/j.bbamem.2019.01.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/12/2019] [Accepted: 01/25/2019] [Indexed: 12/21/2022]
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22
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Azalomycin F5a, a polyhydroxy macrolide binding to the polar head of phospholipid and targeting to lipoteichoic acid to kill methicillin-resistant Staphylococcus aureus. Biomed Pharmacother 2019; 109:1940-1950. [DOI: 10.1016/j.biopha.2018.11.067] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 11/13/2018] [Accepted: 11/19/2018] [Indexed: 11/22/2022] Open
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23
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Environmental stress stability of pectin-stabilized resveratrol liposomes with different degree of esterification. Int J Biol Macromol 2018; 119:53-59. [DOI: 10.1016/j.ijbiomac.2018.07.139] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Revised: 07/16/2018] [Accepted: 07/20/2018] [Indexed: 02/06/2023]
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24
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Biophysical methods: Complementary tools to study the influence of human steroid hormones on the liposome membrane properties. Biochimie 2018; 153:13-25. [DOI: 10.1016/j.biochi.2018.02.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 02/07/2018] [Indexed: 11/21/2022]
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25
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Velmurugan B, Senthilkumaar P, Karthikeyan S. Toxicity impact of fenvalerate on the gill tissue of Oreochromis mossambicus with respect to biochemical changes utilizing FTIR and principal component analysis. J Biol Phys 2018; 44:301-315. [PMID: 29546649 PMCID: PMC6082805 DOI: 10.1007/s10867-018-9484-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Accepted: 02/28/2018] [Indexed: 02/08/2023] Open
Abstract
The use of pesticides in agriculture can make their way into the earth and wash into the amphibian system causing ecological stress. This study aims to understand the changes occurring in gill tissues as a result of fenvalerate exposure using Fourier-transform infrared spectroscopy. The intensity ratio of the selected bands I1545/I1657, I2924/I2853, and I1045/I1545 measures changes in proteins, lipids, and carbohydrates. Curve-fitting analysis was performed in the selected band region to analyze the quantitative changes of proteins, lipids, and carbohydrates. The band area ratio of CH3/asCH2+ sCH2 shows the absence of a long chain of fatty acids due to fenvalerate treatment. The band area ratio of asCH2/sCH2 increases for higher sublethal concentrations, which shows the lower disorder of lipid acyl chain flexibility. A decrease in lipids was found in lower sublethal concentrations. The secondary structure of proteins affirms β sheet development. Carbohydrate metabolism of gill tissues demonstrates a decrease in glycogen contents. A further decrease in glycogen content and an increase in lactic acid were observed when presented to a fenvalerate concentration. PCA plots indicate distinct variations among the biochemical parameters of the gill tissues. This study provides a quantitative examination of assessing pesticide toxicity in aquatic environments.
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Affiliation(s)
- B Velmurugan
- P.G. & Research Department of Zoology, Sir Theagaraya College, Chennai, 600 021, India
| | - P Senthilkumaar
- P.G. & Research Department of Zoology, Sir Theagaraya College, Chennai, 600 021, India
| | - S Karthikeyan
- Department of Physics, Dr. Ambedkar Government Arts College, Chennai, 600 039, India.
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26
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Cho E, Hu Y, Choi Y, Jung S. A dimyristoyl phosphatidylcholine/polydiacetylene biomimetic assembly for the selective screening of progesterone. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.02.028] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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27
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Fanani ML, Wilke N. Regulation of phase boundaries and phase-segregated patterns in model membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2018; 1860:1972-1984. [PMID: 29505769 DOI: 10.1016/j.bbamem.2018.02.023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/20/2018] [Accepted: 02/20/2018] [Indexed: 12/13/2022]
Abstract
Demixing of components has long been described in model membranes. It is a consequence of non-ideal lateral interactions between membrane components, and it causes the presence of segregated phases, forming patches (domains) of different properties, thus introducing heterogeneity into the membrane. In the present review we first describe the processes through which domains are generated, how they grow, and why they are rounded, striped or fractal-like, as well as why they get distributed forming defined patterns. Next, we focus on the effect of an additive on a lipid mixture, which usually induces shifts in demixing points, thus stabilizing or destabilizing the phase-segregated state. Results found for different model membranes are summarized, detailing the ways in which phase segregation and the generated patterns may be modulated. We focus on which are, from our viewpoint, the most relevant regulating factors affecting the surface texture observed in model membranes. This article is part of a Special Issue entitled: Emergence of Complex Behavior in Biomembranes edited by Marjorie Longo.
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Affiliation(s)
- María Laura Fanani
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Química Biológica "Ranwel Caputto", Córdoba, Argentina; CONICET, Universidad Nacional de Córdoba, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Córdoba, Argentina
| | - Natalia Wilke
- Universidad Nacional de Córdoba, Facultad de Ciencias Químicas, Departamento de Química Biológica "Ranwel Caputto", Córdoba, Argentina; CONICET, Universidad Nacional de Córdoba, Centro de Investigaciones en Química Biológica de Córdoba (CIQUIBIC), Córdoba, Argentina.
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28
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Zhang T, Qiu Y, Luo Q, Zhao L, Yan X, Ding Q, Jiang H, Yang H. The Mechanism by Which Luteolin Disrupts the Cytoplasmic Membrane of Methicillin-Resistant Staphylococcus aureus. J Phys Chem B 2018; 122:1427-1438. [PMID: 29309144 DOI: 10.1021/acs.jpcb.7b05766] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Methicillin-resistant Staphylococcus aureus (MRSA) is one of the most versatile human pathogens. Luteolin (LUT) has anti-MRSA activity by disrupting the MRSA cytoplasmic membrane. However, the mechanism by which luteolin disrupts the membrane remains unclear. Here, we performed differential scanning calorimetry (DSC) and all-atomic molecular dynamics (AA-MD) simulations to investigate the interactions and effects of LUT on model membranes composed of phosphatidylcholine (PC) and phosphatidylglycerol (PG). We detected the transition thermodynamic parameters of dipalmitoylphosphatidylcholine (DPPC) liposomes, dipalmitoylphosphatidylglycerol (DPPG) liposomes, and liposomes composed of both DPPC and DPPG at different LUT concentrations and showed that LUT molecules were located between polar heads and the hydrophobic region of DPPC/DPPG. In the MD trajectories, LUT molecules ranging from 5 to 50 had different effects on the membranes thickness, fluidity and ordered property of lipids, and lateral pressure of lipid bilayers composed of dioleoylphosphatidylcholine (DOPC) and dioleoylphosphatidylglycerol (DOPG). Also, most LUT molecules were distributed in the region between the phosphorus atoms and C9 atoms of DOPC and DOPG. On the basis of the combination of these results, we conclude that the distinct effects of LUT on lipid bilayers composed of PCs and PGs may elucidate the mechanism by which LUT disrupts the cytoplasmic membrane of MRSA.
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Affiliation(s)
- Tao Zhang
- School of Pharmacy, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China
| | - Yunguang Qiu
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences , No. 19A Yuquan Road, Beijing 100049, China
| | - Qichao Luo
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences , No. 19A Yuquan Road, Beijing 100049, China
| | - Lifen Zhao
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China
| | - Xin Yan
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China.,School of Life Science and Technology, ShanghaiTech University , 393 Huaxiazhong Road, Shanghai 201210, China
| | - Qiaoce Ding
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China
| | - Hualiang Jiang
- School of Pharmacy, East China University of Science and Technology , 130 Meilong Road, Shanghai 200237, China.,Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences , No. 19A Yuquan Road, Beijing 100049, China
| | - Huaiyu Yang
- Drug Discovery and Design Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zuchongzhi Road, Shanghai 201203, China.,University of Chinese Academy of Sciences , No. 19A Yuquan Road, Beijing 100049, China
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29
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Tenyang N, Tiencheu B, Womeni HM. Effect of smoking and refrigeration on lipid oxidation of Clupea harengus: A fish commonly consumed in Cameroon. Food Sci Nutr 2017; 6:464-473. [PMID: 29564114 PMCID: PMC5849895 DOI: 10.1002/fsn3.575] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Revised: 11/14/2017] [Accepted: 11/18/2017] [Indexed: 12/02/2022] Open
Abstract
Changes in lipids of herring (Clupea harengus) muscle during different smoking methods and 9 days of refrigeration at 4°C were investigated. The proximate analysis of raw herring revealed that the total lipid, the total protein content and the crude ash were 10.20%, 69.43%, and 19.42%, respectively. The results also indicated that during all processing free fatty acids (FFAs) and peroxide value (PV) increased, whereas iodine value (IV) and total triglycerides decreased. The change were more significantly (p < .05) during unbleached + hot smoking and refrigeration at more than 6 days. All these modification decrease the nutritional value of herring. Bleaching combined to smoking and refrigeration at <6 days had more desire effect on lipid oxidation of herring compared to other treatments. The fish obtained in these conditions are more suitable for feeding heath nutrition.
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Affiliation(s)
- Noel Tenyang
- Department of Biological Sciences Faculty of Science University of Maroua Maroua Cameroon.,Department of Biochemistry Faculty of Science University of Dschang Dschang Cameroon
| | - Bernard Tiencheu
- Department of Biochemistry Faculty of Science University of Buea Buea Cameroon
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30
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Inan Genç A, Gok S, Banerjee S, Severcan F. Valdecoxib Recovers the Lipid Composition, Order and Dynamics in Colon Cancer Cell Lines Independent of COX-2 Expression: An ATR-FTIR Spectroscopy Study. APPLIED SPECTROSCOPY 2017; 71:105-117. [PMID: 27354402 DOI: 10.1177/0003702816654164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Prostanoids play an important role in a variety of physiological and pathophysiological processes including inflammation and cancer. The rate-limiting step in the prostanoid biosynthesis pathway is catalyzed by cyclooxygenases (COXs). Aberrant expression of the inducible isoform COX-2 plays a significant role in colon cancer initiation and progression. In this study, we have hypothesized that COX-2 specific inhibitors such as Valdecoxib (VLX), being highly hydrophobic, may alter biophysical properties of cellular lipids. In this study, COX-2 expressing (HT29) and COX-2 non-expressing (SW620) colon cancer cell lines were treated with VLX and examined using attenuated total reflection infrared spectroscopy. The results revealed that VLX treatment decreased lipid fluidity in the cells irrespective of COX-2 expression status and affected order parameters of the lipids in both cell lines. Cluster analysis also indicated that the spectral differences between the two cell lines are profound and could be successfully differentiated. Valdecoxib treatment could enhance the composition, order and dynamics of the lipids of colon cancer cells independently of its COX-2 inhibitory mechanism. Valdecoxib has therapeutic effects upon colon cancer, therefore it can be used as an adjuvant and/or chemopreventive agent for colon cancer.
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Affiliation(s)
- Aysun Inan Genç
- Department of Biological Sciences, Middle East Technical University, Turkey
| | - Seher Gok
- Department of Biological Sciences, Middle East Technical University, Turkey
| | - Sreeparna Banerjee
- Department of Biological Sciences, Middle East Technical University, Turkey
| | - Feride Severcan
- Department of Biological Sciences, Middle East Technical University, Turkey
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31
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Abboud R, Charcosset C, Greige-Gerges H. Tetra- and Penta-Cyclic Triterpenes Interaction with Lipid Bilayer Membrane: A Structural Comparative Study. J Membr Biol 2016; 249:327-38. [PMID: 26759229 DOI: 10.1007/s00232-016-9871-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 01/01/2016] [Indexed: 10/22/2022]
Abstract
The effect of tetracyclic (cortisol, prednisolone, and 9-fluorocortisol acetate) and pentacyclic (uvaol and erythrodiol) triterpenes (TTPs) on the fluidity of dipalmitoyl phosphatidyl choline (DPPC) liposome membrane was investigated by differential scanning calorimetry, Raman spectroscopy, and fluorescence polarization of 1,6-diphenyl-1,3,5-hexatriene (DPH). Liposomes were prepared in the absence and presence of TTPs at molar ratios DPPC:TTP 100:1, 100:2.5, and 100:10. All the studied TTPs abolished the pre-transition and modified the intensity of the Raman peak at 715 cm(-1) proving the interaction of TTP molecules with the choline head group of phospholipids. An increase in the Raman height intensity ratios of the peaks I 2935/2880, I 2844/2880, and I 1090/1130, giving information about the ratio disorder/order of the alkyl chains, and a decrease of the main transition temperature demonstrated the interaction of TTPs with the alkyl chains. The tetracyclic TTPs produced broadening of the phase transition profile. Besides, a scarcely splitting of the main transition peak was obtained with prednisolone and 9-fluorocortisol acetate. The results of fluorescence depolarization of DPH showed that the studied molecules fluidized the liposomal membrane at 25, 41, and 50 °C. Pentacyclic TTPs, being more hydrophobic than tetracyclic ones, demonstrated higher fluidizing effect than tetracyclic TTPs in the liquid crystalline phase suggesting a deeper incorporation in the lipid bilayer. The presence of a free polar head group at the ring D seems to control the TTP incorporation in the bilayer and consequently its effect on the membrane fluidity.
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Affiliation(s)
- Rola Abboud
- Bioactive Molecules Research Group, Doctoral School of Sciences and Technologies, Faculty of Sciences, Section II, Lebanese University, B.P. 90656, Jdaidet el-Matn, Lebanon.,Laboratoire d'Automatique et de Génie des Procédés (LAGEP), UMR-CNRS 5007, Université Claude Bernard Lyon 1, CPE Lyon, Bat 308G, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne Cedex, France
| | - Catherine Charcosset
- Laboratoire d'Automatique et de Génie des Procédés (LAGEP), UMR-CNRS 5007, Université Claude Bernard Lyon 1, CPE Lyon, Bat 308G, 43 Boulevard du 11 Novembre 1918, 69622, Villeurbanne Cedex, France
| | - Hélène Greige-Gerges
- Bioactive Molecules Research Group, Doctoral School of Sciences and Technologies, Faculty of Sciences, Section II, Lebanese University, B.P. 90656, Jdaidet el-Matn, Lebanon.
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32
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Effect of Progesterone, Its Hydroxylated and Methylated Derivatives, and Dydrogesterone on Lipid Bilayer Membranes. J Membr Biol 2015; 248:811-24. [DOI: 10.1007/s00232-015-9803-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2014] [Accepted: 04/12/2015] [Indexed: 10/23/2022]
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33
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Shao Y, Yang L, Han HK. TPGS-chitosome as an effective oral delivery system for improving the bioavailability of Coenzyme Q10. Eur J Pharm Biopharm 2015; 89:339-46. [DOI: 10.1016/j.ejpb.2014.12.026] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2014] [Revised: 12/11/2014] [Accepted: 12/16/2014] [Indexed: 10/24/2022]
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34
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Yoneda JS, Rigos CF, de Lourenço TFA, Sebinelli HG, Ciancaglini P. Na,K-ATPase reconstituted in ternary liposome: the presence of cholesterol affects protein activity and thermal stability. Arch Biochem Biophys 2014; 564:136-41. [PMID: 25286376 DOI: 10.1016/j.abb.2014.09.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2014] [Revised: 09/12/2014] [Accepted: 09/26/2014] [Indexed: 01/27/2023]
Abstract
Differential scanning calorimetry (DSC) was applied to investigate the effect of cholesterol on the thermotropic properties of the lipid membrane (DPPC and DPPE). The thermostability and unfolding of solubilized and reconstituted Na,K-ATPase in DPPC:DPPE:cholesterol-liposomes was also studied to gain insight into the role of cholesterol in the Na,K-ATPase modulation of enzyme function and activity. The tertiary system (DPPC:DPPE:cholesterol) (molar ratio DPPC:DPPE equal 1:1) when cholesterol content was increased from 0% up to 40% results in a slight decrease in the temperature of transition and enthalpy, and an increase in width. We observed that, without heating treatment, at 37°C, the activity was higher for 20mol% cholesterol. However, thermal inactivation experiments showed that the enzyme activity loss time depends on the cholesterol membrane content. The unfolding of the enzyme incorporated to liposomes of DPPC:DPPE (1:1mol) with different cholesterol contents, ranging from 0% to 40% mol was also studied by DSC. Some differences between the thermograms indicate that the presence of lipids promotes a conformational change in protein structure and this change is enough to change the way Na,K-ATPase thermally unfolds.
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Affiliation(s)
- Juliana Sakamoto Yoneda
- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP-USP, Depto. Química, 14040-901 Ribeirão Preto, SP, Brazil
| | - Carolina Fortes Rigos
- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP-USP, Depto. Química, 14040-901 Ribeirão Preto, SP, Brazil
| | | | - Heitor Gobbi Sebinelli
- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP-USP, Depto. Química, 14040-901 Ribeirão Preto, SP, Brazil
| | - Pietro Ciancaglini
- Faculdade de Filosofia Ciências e Letras de Ribeirão Preto - FFCLRP-USP, Depto. Química, 14040-901 Ribeirão Preto, SP, Brazil.
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35
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Kardas M, Gozen AG, Severcan F. FTIR spectroscopy offers hints towards widespread molecular changes in cobalt-acclimated freshwater bacteria. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2014; 155:15-23. [PMID: 24964200 DOI: 10.1016/j.aquatox.2014.05.027] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Revised: 05/22/2014] [Accepted: 05/22/2014] [Indexed: 06/03/2023]
Abstract
High concentrations of heavy metals can be toxic for bacteria. However, after prolonged exposure, bacteria can become acclimated and begin to be able to grow in the presence of heavy metals. Acclimation can involve alterations of metabolism and molecular structures. Our aim was to examine these alterations in cobalt-acclimated bacteria via attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy on viable samples. Bacillus sp. and Pseudomonas sp. isolated from a temperate shallow lake and a well-established strain of E. coli were investigated. Our results revealed consistent, wide-spread changes in cell membrane and cell wall dynamics of Bacillus sp. and E. coli, including a decrease in peptidoglycan content of Bacillus sp. and increased lipid ordering of the membrane in both bacteria. Furthermore, a decrease in RNA and protein concentrations of Bacillus sp. was measured. All three bacteria studied showed a decrease in conformational freedom of proteins following cobalt acclimation. Interestingly, both Bacillus sp. and E. coli showed slight but significant alterations in their DNA conformations which might imply a methylation-mediated memory formation leading to epigenetic modulation for cobalt adaptation.
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Affiliation(s)
- Mehmet Kardas
- Middle East Technical University, Biological Sciences, Microbial Ecology Laboratory and Biophysics Laboratory, Ankara 06800, Turkey
| | - Ayse Gul Gozen
- Middle East Technical University, Biological Sciences, Microbial Ecology Laboratory and Biophysics Laboratory, Ankara 06800, Turkey.
| | - Feride Severcan
- Middle East Technical University, Biological Sciences, Microbial Ecology Laboratory and Biophysics Laboratory, Ankara 06800, Turkey
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36
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Yonar D, Sünnetçioğlu MM. Spectroscopic and calorimetric studies on trazodone hydrochloride–phosphatidylcholine liposome interactions in the presence and absence of cholesterol. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2369-79. [DOI: 10.1016/j.bbamem.2014.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 05/22/2014] [Accepted: 06/09/2014] [Indexed: 10/25/2022]
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37
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Bilge D, Sahin I, Kazanci N, Severcan F. Interactions of tamoxifen with distearoyl phosphatidylcholine multilamellar vesicles: FTIR and DSC studies. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 130:250-256. [PMID: 24792199 DOI: 10.1016/j.saa.2014.04.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2013] [Revised: 03/06/2014] [Accepted: 04/06/2014] [Indexed: 06/03/2023]
Abstract
Interactions of a non-steroidal antiestrogen drug, tamoxifen (TAM), with distearoyl-sn-glycero-3-phosphatidylcholine (DSPC) multilamellar liposomes (MLVs) were investigated as a function of drug concentration (1-15 mol%) by using two noninvasive techniques, namely Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). FTIR spectroscopy results show that increasing TAM concentrations (except 1 mol%) increased the wavenumbers of the CH2 stretching modes, implying an disordering effect for DSPC MLVs both in the gel and liquid crystalline phases. The bandwidth values of the CH2 stretchings except for 1 mol% increased when TAM concentrations increased for DSPC liposomes, indicating an increase in the dynamics of liposomes. The CO stretching and PO2- antisymmetric double bond stretching bands were analyzed to study interactions of TAM with head groups of lipids. As the concentrations of TAM increased, dehydration occurred around these functional groups in the polar part of the lipids. The DSC studies on thermal properties of DSPC lipids indicate that TAM eliminated the pre transition, shifted the main phase transition to lower temperatures and broadened the phase transition curve of the liposomes.
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Affiliation(s)
- Duygu Bilge
- Department of Physics, Faculty of Science, Ege University, 35100 İzmir, Turkey
| | - Ipek Sahin
- Department of Physics, Faculty of Science, Ege University, 35100 İzmir, Turkey
| | - Nadide Kazanci
- Department of Physics, Faculty of Science, Ege University, 35100 İzmir, Turkey.
| | - Feride Severcan
- Department of Biological Sciences, Middle East Technical University, 06531 Ankara, Turkey
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Agomelatine strongly interacts with zwitterionic DPPC and charged DPPG membranes. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2014; 1838:2798-806. [PMID: 25091390 DOI: 10.1016/j.bbamem.2014.07.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 07/07/2014] [Accepted: 07/25/2014] [Indexed: 01/01/2023]
Abstract
Depression is one of the most common psychiatric diseases in the population. Agomelatine is a novel antidepressant drug with melatonin receptor agonistic and serotonin 5-HT2C antagonistic properties. Furthermore, being a melatonergic drug, agomelatine has the potential of being used in therapeutic applications like melatonin as an antioxidant, anti-inflammatory and antiapoptotic drug. The action mechanism of agomelatine on the membrane structure has not been clarified yet. In the present study, we aimed to investigate the interaction of agomelatine with model membranes of dipalmitoylphosphatidylcholine (DPPC) and dipalmitoylphosphatidylgylcerol (DPPG) by Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). We found that agomelatine interacts with the head group in such a manner that it destabilizes the membrane architecture to a large extent. Thus, agomelatine causes alterations in the order, packing and dynamics of the DPPC and DPPG model membranes. Our results suggest that agomelatine strongly interacts with zwitterionic and charged membrane phospholipids. Because lipid structure and dynamics may have influence on the structure of membrane bound proteins and affect the signal transduction systems of membranes, these effects of agomelatine may be important in its action mechanism.
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Zhou W, Liu W, Zou L, Liu W, Liu C, Liang R, Chen J. Storage stability and skin permeation of vitamin C liposomes improved by pectin coating. Colloids Surf B Biointerfaces 2014; 117:330-7. [DOI: 10.1016/j.colsurfb.2014.02.036] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2013] [Revised: 02/19/2014] [Accepted: 02/21/2014] [Indexed: 11/16/2022]
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40
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Martins VHG, Rodrigues MR, Mascarenhas LD, de Azambuja CRL, Londoño JL, de Lima VR. The effect of furazolidone on the physico-chemical properties of dimyristoylphosphatidylcholine bilayers: Relevance to anti-leishmanial therapy. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2013.12.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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41
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de Sousa RS, de Moraes Nogueira AO, Marques VG, Clementin RM, de Lima VR. Effects of α-eleostearic acid on asolectin liposomes dynamics: relevance to its antioxidant activity. Bioorg Chem 2013; 51:8-15. [PMID: 24076476 DOI: 10.1016/j.bioorg.2013.08.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 08/27/2013] [Accepted: 08/29/2013] [Indexed: 11/27/2022]
Abstract
In this study, the effect of α-eleostearic acid (α-ESA) on the lipid peroxidation of soybean asolectin (ASO) liposomes was investigated. This effect was correlated to changes caused by the fatty acid in the membrane dynamics. The influence of α-ESA on the dynamic properties of liposomes, such as hydration, mobility and order, were followed by horizontal attenuated total reflection Fourier transform infrared spectroscopy (HATR-FTIR), nuclear magnetic resonance (NMR), differential scanning calorimetry (DSC) and UV-vis techniques. The α-ESA showed an in vitro antioxidant activity against the damage induced by hydroxyl radical (OH) in ASO liposomes. The analysis of HATR-FTIR frequency shifts and bandwidths and (1)H NMR spin-lattice relaxation times, related to specific lipid groups, showed that α-ESA causes an ordering effect on the polar and interfacial regions of ASO liposomes, which may restrict the OH diffusion in the membrane. The DSC enthalpy variation analysis suggested that the fatty acid promoted a disordering effect on lipid hydrophobic regions, which may facilitate interactions between the reactive specie and α-ESA. Turbidity results showed that α-ESA induces a global disordering effect on ASO liposomes, which may be attributed to a change in the lipid geometry and shape. Results of this study may allow a more complete view of α-ESA antioxidant mode of action against OH, considering its influence on the membrane dynamics.
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Affiliation(s)
- Robson Simplício de Sousa
- Research Group of Membrane Molecular Interactions, School of Chemical and Food Engineering, Post-graduation Program in Technological and Environmental Chemistry, Federal University of Rio Grande, Av. Itália, km 8, Campus Carreiros, Rio Grande-RS 96203-900, Brazil
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42
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Arpicco S, Lerda C, Dalla Pozza E, Costanzo C, Tsapis N, Stella B, Donadelli M, Dando I, Fattal E, Cattel L, Palmieri M. Hyaluronic acid-coated liposomes for active targeting of gemcitabine. Eur J Pharm Biopharm 2013; 85:373-80. [PMID: 23791684 DOI: 10.1016/j.ejpb.2013.06.003] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 03/26/2013] [Accepted: 06/05/2013] [Indexed: 10/26/2022]
Abstract
The aim of this work was the preparation, characterization, and preliminary evaluation of the targeting ability toward pancreatic adenocarcinoma cells of liposomes containing the gemcitabine lipophilic prodrug [4-(N)-lauroyl-gemcitabine, C12GEM]. Hyaluronic acid (HA) was selected as targeting agent since it is biodegradable, biocompatible, and can be chemically modified and its cell surface receptor CD44 is overexpressed on various tumors. For this purpose, conjugates between a phospholipid, the 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE), and HA of two different low molecular weights 4800 Da (12 disaccharidic units) and 12,000 Da (32 disaccharidic units), were prepared, characterized, and introduced in the liposomes during the preparation. Different liposomal formulations were prepared and their characteristics were analyzed: size, Z potential, and TEM analyses underline a difference in the HA-liposomes from the non-HA ones. In order to better understand the HA-liposome cellular localization and to evaluate their interaction with CD44 receptor, confocal microscopy studies were performed. The results demonstrate that HA facilitates the recognition of liposomes by MiaPaCa2 cells (CD44(+)) and that the uptake increases with increase in the polymer molecular weight. Finally, the cytotoxicity of the different preparations was evaluated and data show that incorporation of C12GEM increases their cytotoxic activity and that HA-liposomes inhibit cell growth more than plain liposomes. Altogether, the results demonstrate the specificity of C12GEM targeting toward CD44-overexpressing pancreatic adenocarcinoma cell line using HA as a ligand.
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Affiliation(s)
- Silvia Arpicco
- Dipartimento di Scienza e Tecnologia del Farmaco, University of Torino, Italy.
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Kumar S, Randhawa JK. High melting lipid based approach for drug delivery: Solid lipid nanoparticles. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2013; 33:1842-52. [DOI: 10.1016/j.msec.2013.01.037] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 01/11/2013] [Accepted: 01/16/2013] [Indexed: 12/13/2022]
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46
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Habib L, Khreich N, Jraij A, Abbas S, Magdalou J, Charcosset C, Greige-Gerges H. Preparation and characterization of liposomes incorporating cucurbitacin E, a natural cytotoxic triterpene. Int J Pharm 2013; 448:313-9. [DOI: 10.1016/j.ijpharm.2013.03.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 03/12/2013] [Accepted: 03/13/2013] [Indexed: 11/27/2022]
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Liu W, Liu J, Liu W, Li T, Liu C. Improved physical and in vitro digestion stability of a polyelectrolyte delivery system based on layer-by-layer self-assembly alginate-chitosan-coated nanoliposomes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4133-4144. [PMID: 23566223 DOI: 10.1021/jf305329n] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
To improve lipid membrane stability and prevent leakage of encapsulated food ingredients, a polyelectrolyte delivery system (PDS) based on sodium alginate (AL) and chitosan (CH) coated on the surface of nanoliposomes (NLs) has been prepared and optimized using a layer-by-layer self-assembly deposition technique. Morphology and FTIR observation confirmed PDS has been successfully coated by polymers. Physical stability studies (pH and heat treatment) indicated that the outer-layer polymers could protect the core (NLs) from damage, and PDS showed more intact structure than NLs. Further enzymic digestion stability studies (particle size, surface charge, free fatty acid, and model functional component release) demonstrated that PDS could better resist lipolytic degradation and facilitate a lower level of encapsulated component release in simulated gastrointestinal conditions. This work suggested that deposition of polyelectrolyte on the surface of NLs can stabilize liposomal structure, and PDS could be developed as a formulation for delivering functional food ingredients in the gastrointestinal tract.
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Affiliation(s)
- Weilin Liu
- State Key Laboratory of Food Science and Technology, Nanchang University , Nanchang 330047, Jiangxi, People's Republic of China
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Peng A, Pisal DS, Doty A, Balu-Iyer SV. Phosphatidylinositol induces fluid phase formation and packing defects in phosphatidylcholine model membranes. Chem Phys Lipids 2011; 165:15-22. [PMID: 22024173 DOI: 10.1016/j.chemphyslip.2011.10.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Revised: 09/28/2011] [Accepted: 10/11/2011] [Indexed: 11/16/2022]
Abstract
Liposomes consisted of phosphatidylinositol (PI) and phosphatidylcholine (PC) have been utilized as delivery vehicle for drugs and proteins. In the present work, we studied the effect of soy PI on physical properties of 1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC) liposomes such as phase state of lipid bilayer, lipid packing and phase properties using multiple orthogonal biophysical techniques. The 6-dodecanoyl-2-dimethylamino naphthalene (Laurdan) fluorescence studies showed that presence of PI induces the formation of fluid phases in DMPC. Differential scanning calorimetry (DSC), temperature dependent fluorescence anisotropy measurements, and generalized polarization values for Laurdan showed that the presence of as low as 10mol% of PI induces substantial broadening and shift to lower temperature of phase transition of DMPC. The fluorescence emission intensity of DPH labeled, PI containing DMPC lipid bilayer decreased possibly due to deeper penetration of water molecules in lipid bilayer. In order to further delineate the effect of PI on the physico chemical properties of DMPC is due to either significant hydrophobic mismatch between the acyl chains of the DMPC and that of soy PI or due to the inositol head group, we systematically replaced soy PI with PC species of similar acyl chain composition (DPPC and 18:2 (Cis) PC) or with diacylglycerol (DAG), respectively. The anisotropy of PC membrane containing soy PI showed largest fluidity change compared to other compositions. The data suggests that addition of PI alters structure and dynamics of DMPC bilayer in that it promotes deeper water penetration in the bilayer, induces fluid phase characteristics and causes lipid packing defects that involve its inositol head group.
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Affiliation(s)
- Aaron Peng
- Department of Pharmaceutical Sciences, University at Buffalo, State University of New York, 526 Hochstetter Hall, Amherst, NY 14260, USA
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Comparative Effects of α-, β-, and γ-Carbolines on Platelet Aggregation and Lipid Membranes. J Toxicol 2011; 2011:151596. [PMID: 21876689 PMCID: PMC3159306 DOI: 10.1155/2011/151596] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2011] [Revised: 04/23/2011] [Accepted: 06/02/2011] [Indexed: 12/13/2022] Open
Abstract
Cigarette smoking and alcohol consumption possibly affect platelet functions. To verify the hypothesis that some α-, β-, and γ-carboline components in cigarette smoke and alcoholic beverages may change platelet aggregability, their effects on human platelets were determined by aggregometry together with investigating their membrane effects by turbidimetry. Carbolines inhibited platelet aggregation induced by five agents with the potency being 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole > 3-amino-1-methyl-5H-pyrido[4,3-b]indole > 1-methyl-9H-pyrido[3,4-b]indole. The most potent 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole showed 50% aggregation-inhibitory concentrations of 6–172 μM. Both γ-carbolines interacted with phosphatidylcholine membranes to lower the lipid phase transition temperature with the potency correlating to the antiplatelet activity, suggesting that the interaction with platelet membranes to increase their fluidity underlies antiplatelet effects. Given their possible concentration and accumulation in platelets, γ- and β-carbolines would provide cigarette smokers and alcohol drinkers with reduced platelet aggregability, and they may be responsible for the occurrence of hemorrhagic diseases associated with heavy smoking and alcoholics.
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50
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Convulsant agent pentylenetetrazol does not alter the structural and dynamical properties of dipalmitoylphosphatidylcholine model membranes. J Pharm Biomed Anal 2011; 54:379-86. [DOI: 10.1016/j.jpba.2010.09.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2010] [Revised: 07/31/2010] [Accepted: 09/02/2010] [Indexed: 11/19/2022]
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