An overview of peroxidation reactions using liposomes as model systems and analytical methods as monitoring tools.
TL;DR: The aim of this review is to gather together the latest advances on the understanding on lipids' peroxidation, using liposomes as model systems, including the main available analytical methods to monitorperoxidation reactions, with special emphasis on Fourier Transform Infrared (FTIR) and Raman spectroscopies.
About: This article is published in Colloids and Surfaces B: Biointerfaces.The article was published on 2020-11-01. It has received 10 citations till now. The article focuses on the topics: Lipid peroxidation.
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TL;DR: This study introduced in detail the conditions that affect microbial reduction but also innovatively introduced consortium which may be the cornerstone for future treatment of complex field environments.
66 citations
Journal Article•
TL;DR: In this paper, the dynamics of the gel to fluid phase transformation in 100 nm large unilamellar vesicles (LUV) of 1,2-dipalmitoyl(d62)-sn-glycero-3-phosphocholine (d62-DPPC) have been studied by laser-induced temperature-jump initiation coupled with time-resolved infrared spectroscopy and by MD simulations.
Abstract: The dynamics of the gel to fluid phase transformation in 100 nm large unilamellar vesicles (LUV) of 1,2-dipalmitoyl(d62)-sn-glycero-3-phosphocholine (d62-DPPC), has been studied by laser-induced temperature-jump initiation coupled with time-resolved infrared spectroscopy and by MD simulations. The infrared transients that characterize the temperature dependent phase transformation are complex, extending from the nanosecond to the millisecond time scales. An initial fast (submicrosecond) component can be modeled by partial melting of the gel domains, initiated at pre-existing defects at the edges of the faceted structure of the gel phase. Molecular dynamics simulations support the model of fast melting from edge defects. The extent of melting during the fast phase is limited by the area expansion on melting, which leads to a surface pressure that raises the effective melting temperature. Subsequent melting is observed to follow highly stretched exponential kinetics, consistent with collective relaxation of the surface pressure through a hierarchy of surface undulations with different relaxation times. The slowest step is water diffusion through the bilayer to allow the vesicle volume to grow along with its expanded surface area. The results demonstrate that the dominant relaxation in the gel to fluid phase transformation in response to a large T-jump perturbation (compared to the transition width) is fast (submicrosecond), which has important practical and fundamental consequences.
30 citations
14 Feb 2021
TL;DR: In this article, the interaction of resveratrol with planar lipid membranes (PLMs) of different composition was studied using electrophysiological measurements, and the variation of the biophysical parameters of PLMs in the presence of reserveratrol provided information on its location within a lipid double layer, thus contributing to an understanding of its mechanism of action.
Abstract: Resveratrol, a polyphenolic molecule found in edible fruits and vegetables, shows a wide range of beneficial effects on human health, including anti-microbial, anti-inflammatory, anti-cancer, and anti-aging properties. Due to its poor water solubility and high liposome-water partition coefficient, the biomembrane seems to be the main target of resveratrol, although the mode of interaction with membrane lipids and its location within the cell membrane are still unclear. In this study, using electrophysiological measurements, we study the interaction of resveratrol with planar lipid membranes (PLMs) of different composition. We found that resveratrol incorporates into palmitoyl-oleoyl-phosphatidylcholine (POPC) and POPC:Ch PLMs and forms conductive units unlike those found in dioleoyl-phosphatidylserine (DOPS):dioleoyl-phosphatidylethanolamine (DOPE) PLMs. The variation of the biophysical parameters of PLMs in the presence of resveratrol provides information on its location within a lipid double layer, thus contributing to an understanding of its mechanism of action.
8 citations
TL;DR: Noteworthily, WOCB released at 20-600 °C showed strong phytotoxicity to wheat, but lipids containing nitrogen and sulfur from high temperatures can act as nutrients to promote wheat growth.
8 citations
TL;DR: Clinicians who regularly work with PMMA dust, Vitallium dust, and dentin porcelain dust should wear the appropriate personal protection equipment to minimize exposure and reduce the health risks caused by these particulates.
Abstract: Respiratory diseases, including pulmonary fibrosis, silicosis, and allergic pneumonia, can be caused by long-term exposure to dental prosthesis grinding dust. The extent of the toxicity and pathogenicity of exposure to PMMA dust, Vitallium dust, and dentin porcelain dust differs. The dust from grinding dental prosthesis made of these three materials was characterized in terms of morphology, particle size, and elemental composition. The adverse effects of different concentrations of grinding dust (50, 150, 300, 450, and 600 μg ml-l) on RAW264.7 macrophages were evaluated, including changes in cell morphology and the production of lactate dehydrogenase (LDH) and reactive oxygen species (ROS). The dust particles released by grinding dental prosthesis made of these materials had different morphologies, particle sizes, and elemental compositions. They also induced varying degrees of cytotoxicity in RAW264.7 macrophages. A possible cytotoxicity mechanism is the induction of lipid peroxidation and plasma membrane damage as the dust particles penetrate cells. Therefore, clinicians who regularly work with these materials should wear the appropriate personal protection equipment to minimize exposure and reduce the health risks caused by these particulates.
6 citations
References
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Book•
01 Jan 2002
TL;DR: The theory and practice of Vibrational Spectroscopy instrumentation for mid- and far-infrared spectroscopy is discussed in detail in this paper, along with a discussion of the application of VVS in agriculture.
Abstract: VOLUME 1: THEORY AND INSTRUMENTATION Introduction to the Theory and Practice of Vibrational Spectroscopy Instrumentation for Mid- and Far-infrared Spectroscopy Instrumentation for Near-infrared Spectroscopy Instrumentation for Raman Spectroscopy Time-resolved Spectroscopy Dichroism and Optical Activity in Vibrational Spectroscopy Surface-enhanced Vibrational Spectroscopy Other Instrumental Approaches for Vibrational Spectroscopy Calibration Procedures and Standards for Vibrational Spectroscopy VOLUME 2: SAMPLING TECHNIQUES Mid- and Near-infrared Transmission Spectroscopy Mid-infrared External Reflection Spectroscopy Mid-infrared Internal Reflection Spectroscopy Diffuse Reflection Spectroscopy Other IR Sampling Techniques Raman Spectroscopy Low Temperature and High Pressure Sampling Techniques Microscopy Depth profiling by Vibrational Spectroscopy Optical Conduits for Vibrational Specroscopy Hyphenated Techniques Atmospheric VOLUME 3: SAMPLE CHARACTERIZATION AND SPECTRAL DATA PROCESSING Spectra-Structure Correlations Group Theoretical and Numerical Approaches to the Calculation of Vibrational Spectra Discrimant Analysis Two-dimensional (2D) Analysis Spectral Enhancement and Band Resolution Techniques Quantitative Analysis Anomalies, Atifacts and Common Errors in Using Vibrational Spectroscopy Techniques Glossary VOLUME 4: APPLICATIONS IN INDUSTRY, MATERIALS AND THE PHYSICAL SCIENCES Analysis and Characterization of Polymers and Rubbers Rheo-optical Measurements of Polymers and Rubbers Materials Science Spectoelectrochemistry Process Vibrational Spectroscopy Atmospheric and Astronomical Vibrational Spectroscopy Industrial Applications of Vibrational Spectroscopy Forensic Applications of Vibrational Spectroscopy Catalysis Other Applications of Vibrational Spectroscopy Vibrational Spectroscopy in Education VOLUME 5: APPLICATIONS IN LIFE, PHARMACEUTICAL AND NATURAL SCIENCES Biomedical Applications Biochemical Applications Pharmaceutical Applications Food Science Agricultural Applications Abbreviations and Acronyms, Glossary, List of Contributors and Subject Index
2,025 citations
1,246 citations
TL;DR: Stress acclimating plants respond to abiotic and biotic stress by remodeling membrane fluidity and by releasing α-linolenic (18:3) from membrane lipids, the precursor molecule for phyto-oxylipin biosynthesis.
Abstract: Stress acclimating plants respond to abiotic and biotic stress by remodeling membrane fluidity and by releasing α-linolenic (18:3) from membrane lipids. The modification of membrane fluidity is mediated by changes in unsaturated fatty acid levels, a function provided in part by the regulated activity of fatty acid desaturases. Adjustment of membrane fluidity maintains an environment suitable for the function of critical integral proteins during stress. α-Linolenic acid, released from membrane lipid by regulated lipase activity, is the precursor molecule for phyto-oxylipin biosynthesis. The modulation of chloroplast oleic acid (18:1) levels is central to the normal expression of defense responses to pathogens in Arabidopsis. Oleic (18:1) and linolenic (18:2) acid levels, in part, regulate development, seed colonization, and mycotoxin production by Aspergillus spp.
679 citations
TL;DR: Raman spectra of 35 lipids are presented and analyzed in this paper, i.e. saturated/unsaturated fatty acids, triacylglycerols, cholesterol, cholesteryl esters and phospholipids.
Abstract: Raman spectra of 35 lipids are presented and analyzed in this work. Selected compounds, i.e. saturated/unsaturated fatty acids, triacylglycerols, cholesterol, cholesteryl esters and phospholipids, were chosen to review key lipids involved in cardiovascular disease development. Differences in Raman signatures both between diverse groups of lipids as well as various members of the same family are investigated in detail in order to elucidate marker features enabling detection and discrimination of lipids in complex samples, particularly of biological origin. This work complements our previous review on important biomolecules, i.e. proteins, and presents a comprehensive database of Raman spectra of naturally occurring lipids. Copyright © 2014 John Wiley & Sons, Ltd.
644 citations
Book•
15 Jun 1998
TL;DR: Chemistry and Properties Nomenclature and Classification of Lipids, S.F. O'Keefe Chemistry and Function of Phospholipids, M.C. Erickson Lipid-Based Emulsions and Emulsifiers, D.D. Marangoni Oxidation and Antioxidants Chemistry of Lipid Oxidation, H.J. Shahidi and U.N. Wanasundara Antioxidant Mechanisms.
Abstract: Chemistry and Properties Nomenclature and Classification of Lipids, S.F. O'Keefe Chemistry and Function of Phospholipids, M.C. Erickson Lipid-Based Emulsions and Emulsifiers, D.J. McClements The Chemistry of Waxes and Sterols, E.J. Parish, S. Li, and A.D. Bell Extraction and Analysis of Lipids, F. Shahidi and P.K.J.P.D. Wanasundara Methods for Trans Fatty Acid Analysis, R.E. McDonald and M.M. Mossoba Chemistry of Frying Oils, K. Warner Processing Recovery, Refining, Converting, and Stabilizing Edible Fats and Oils, L.A. Johnson Crystallization and Polymorphism of Fats, P.J. Lawler and P.S. Dimick Chemical Interesterification of Food Lipids: Theory and Practice, D. Rousseau and A.G. Marangoni Oxidation and Antioxidants Chemistry of Lipid Oxidation, H.J. Kim and D.B. Min Lipid Oxidation of Muscle Foods, M.C. Erickson Polyunsaturated Lipid Oxidation in Aqueous System, K. Miyashita Methods of Measuring Oxidative Rancidity in Fats and Oils, F. Shahidi and U.N. Wanasundara Antioxidants, D.W. Reische, D.A. Lillard, and R.R. Eitenmiller Tocopherol Stability and the Prooxidant Mechanisms of Oxidized Tocopherols in Lipids, H.J. Kim and D.B. Min Effects and Mechanisms of Minor Compounds in Oil on Lipid Oxidation, E. Choe Antioxidant Mechanisms, E.A. Decker Nutrition Fats and Oils in Human Health, D. Kritchevsky Unsaturated Fatty Acids, S.M. Watkins and J.B. German Dietary Fats, Eicosanoids, and the Immune System, D.M. Klurfeld Dietary Fats and Coronary Heart Disease, R.P. Mensink and J. Plat Conjugated Linoleic Acids: Nutrition and Biology, B.A. Watkins and Y. Li Dietary Fats and Obesity, D.B. Hausman and B. Mullen Grossman Fatty Acids and Cancer, H.P. Glauert Lipid-Based Synthetic Fat Substitutes, C.C. Akoh Food Applications of Lipids, F.D. Gunstone Biotechnology and Biochemistry Lipid Biotechnology, N. Weber and K.D. Mukherjee Microbial Lipases, J.D. Weete, O.M. Lai, and C.C. Akoh Enzymatic Interesterification, W.M. Willis and A.G. Marangoni Structured Lipids, C.C. Akoh and B.H. Kim Genetic Engineering of Crops that Produce Vegetable Oil, V.C. Knauf and A.J. Del Vecchio
575 citations