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Corrao S, Calvo L, Granà W, Scibetta S, Mirarchi L, Amodeo S, Falcone F, Argano C. Metabolic dysfunction-associated steatotic liver disease: A pathophysiology and clinical framework to face the present and the future. Nutr Metab Cardiovasc Dis 2024:S0939-4753(24)00293-X. [PMID: 39358105 DOI: 10.1016/j.numecd.2024.07.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Revised: 07/16/2024] [Accepted: 07/29/2024] [Indexed: 10/04/2024]
Abstract
AIMS This review aims to provide a straightforward conceptual framework for the knowledge and understanding of Metabolic dysfunction-associated steatotic liver disease (MASLD) in the broad spectrum of steatotic liver disease and to point out the need to consider metabolic dysfunction and comorbidities as interrelated factors for a holistic approach to fatty liver disease. DATA SYNTHESIS MASLD is the new proposed term for steatotic liver disease that replaces the old terminology of non-alcoholic fatty liver disease. This term focused on the relationship between metabolic alteration and hepatic steatosis, reflecting a growing comprehension of the association between metabolic dysfunction and hepatic steatosis. Numerous factors and conditions contribute to the underlying mechanisms, including central obesity, insulin resistance, adiponectin, lipid metabolism, liver function, dietary influences, the composition of intestinal microbiota, and genetic factors. The development of the condition, however, involves a more intricate network of components, such as neurotensin and Advanced Glycation End Products, highlighting the complexity of its pathogenesis. CONCLUSIONS MASLD must be regarded as a complex clinical problem in which only a holistic approach can win through the coordination of multi-professional and multi-speciality interventions.
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Affiliation(s)
- Salvatore Corrao
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy; Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties [PROMISE], University of Palermo, Italy.
| | - Luigi Calvo
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy
| | - Walter Granà
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy
| | - Salvatore Scibetta
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy
| | - Luigi Mirarchi
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy
| | - Simona Amodeo
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy
| | - Fabio Falcone
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy; Department of Health Promotion Sciences, Maternal and Infant Care, Internal Medicine and Medical Specialties [PROMISE], University of Palermo, Italy
| | - Christiano Argano
- Department of Clinical Medicine, Internal Medicine Unit, National Relevance and High Specialization Hospital Trust ARNAS Civico, Di Cristina, Benfratelli, Palermo, Italy
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Weston WC, Hales KH, Hales DB. Flaxseed Reduces Cancer Risk by Altering Bioenergetic Pathways in Liver: Connecting SAM Biosynthesis to Cellular Energy. Metabolites 2023; 13:945. [PMID: 37623888 PMCID: PMC10456508 DOI: 10.3390/metabo13080945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/08/2023] [Accepted: 08/09/2023] [Indexed: 08/26/2023] Open
Abstract
This article illustrates how dietary flaxseed can be used to reduce cancer risk, specifically by attenuating obesity, type 2 diabetes, and non-alcoholic fatty liver disease (NAFLD). We utilize a targeted metabolomics dataset in combination with a reanalysis of past work to investigate the "metabo-bioenergetic" adaptations that occur in White Leghorn laying hens while consuming dietary flaxseed. Recently, we revealed how the anti-vitamin B6 effects of flaxseed augment one-carbon metabolism in a manner that accelerates S-adenosylmethionine (SAM) biosynthesis. Researchers recently showed that accelerated SAM biosynthesis activates the cell's master energy sensor, AMP-activated protein kinase (AMPK). Our paper provides evidence that flaxseed upregulates mitochondrial fatty acid oxidation and glycolysis in liver, concomitant with the attenuation of lipogenesis and polyamine biosynthesis. Defatted flaxseed likely functions as a metformin homologue by upregulating hepatic glucose uptake and pyruvate flux through the pyruvate dehydrogenase complex (PDC) in laying hens. In contrast, whole flaxseed appears to attenuate liver steatosis and body mass by modifying mitochondrial fatty acid oxidation and lipogenesis. Several acylcarnitine moieties indicate Randle cycle adaptations that protect mitochondria from metabolic overload when hens consume flaxseed. We also discuss a paradoxical finding whereby flaxseed induces the highest glycated hemoglobin percentage (HbA1c%) ever recorded in birds, and we suspect that hyperglycemia is not the cause. In conclusion, flaxseed modifies bioenergetic pathways to attenuate the risk of obesity, type 2 diabetes, and NAFLD, possibly downstream of SAM biosynthesis. These findings, if reproducible in humans, can be used to lower cancer risk within the general population.
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Affiliation(s)
- William C. Weston
- Department of Molecular, Cellular & Systemic Physiology, School of Medicine, Southern Illinois University, Carbondale, IL 62901, USA;
| | - Karen H. Hales
- Department of Obstetrics & Gynecology, School of Medicine, Southern Illinois University, Carbondale, IL 62901, USA;
| | - Dale B. Hales
- Department of Molecular, Cellular & Systemic Physiology, School of Medicine, Southern Illinois University, Carbondale, IL 62901, USA;
- Department of Obstetrics & Gynecology, School of Medicine, Southern Illinois University, Carbondale, IL 62901, USA;
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3
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Zhang Q, Zhou X, Zhang J, Li Q, Qian Z. Selenium and vitamin B6 co-supplementation improve dyslipidemia and fatty liver syndrome by SIRT1/SREBP-1c pathway in hyperlipidemic Sprague-Dawley rats induced by high-fat diet. Nutr Res 2022; 106:101-118. [DOI: 10.1016/j.nutres.2022.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Revised: 06/27/2022] [Accepted: 06/29/2022] [Indexed: 11/16/2022]
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Han L, Lin Q, Liu G, Han D, Niu L. Review of the formation and influencing factors of food-derived glycated lipids. Crit Rev Food Sci Nutr 2020; 62:3490-3498. [PMID: 33372540 DOI: 10.1080/10408398.2020.1867052] [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] [Indexed: 12/22/2022]
Abstract
Glycated lipids are formed by a Maillard reaction between the aldehyde group of a reducing sugar with the free amino group of an amino-lipid. The formation and accumulation of glycated lipids are closely related to the prognosis of diabetes, vascular disease, and cancer. However, it is not clear whether food-derived glycated lipids pose a direct threat to the human body. In this review, potentially harmful effect, distribution, formation environment and mechanism, and determination and inhibitory methods of glycated lipids are presented. Future research directions for the study of food-derived glycated lipids include: (1) understanding their digestion, absorption, and metabolism in the human body; (2) expanding the available database for associated risk assessment; (3) relating their formation mechanism to food production processes; (4) revealing the formation mechanism of food-derived glycated lipids; (5) developing rapid, reliable, and inexpensive determination methods for the compounds in different foods; and (6) seeking effective inhibitors. This review will contribute to the final control of food-derived glycated lipids.
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Affiliation(s)
- Lipeng Han
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China.,Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, China
| | - Qingna Lin
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, China.,School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Guoqin Liu
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, China.,School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Dongxue Han
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
| | - Li Niu
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, China
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5
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Fedintsev A, Moskalev A. Stochastic non-enzymatic modification of long-lived macromolecules - A missing hallmark of aging. Ageing Res Rev 2020; 62:101097. [PMID: 32540391 DOI: 10.1016/j.arr.2020.101097] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 05/05/2020] [Accepted: 06/04/2020] [Indexed: 12/12/2022]
Abstract
Damage accumulation in long-living macromolecules (especially extracellular matrix (ECM) proteins, nuclear pore complex (NPC) proteins, and histones) is a missing hallmark of aging. Stochastic non-enzymatic modifications of ECM trigger cellular senescence as well as many other hallmarks of aging affect organ barriers integrity and drive tissue fibrosis. The importance of it for aging makes it a key target for interventions. The most promising of them can be AGE inhibitors (chelators, O-acetyl group or transglycating activity compounds, amadorins and amadoriases), glucosepane breakers, stimulators of elastogenesis, and RAGE antagonists.
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Affiliation(s)
- Alexander Fedintsev
- Institute of Biology of FRC of Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Syktyvkar, Russia
| | - Alexey Moskalev
- Institute of Biology of FRC of Komi Scientific Center, Ural Branch of Russian Academy of Sciences, Syktyvkar, Russia.
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6
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Han L, Lin Q, Liu G, Han D, Niu L, Su D. Inhibition Mechanism of Catechin, Resveratrol, Butylated Hydroxylanisole, and Tert-Butylhydroquinone on Carboxymethyl 1,2-Dipalmitoyl-sn-Glycero-3-Phosphatidylethanolamine Formation. J Food Sci 2019; 84:2042-2049. [PMID: 31313292 DOI: 10.1111/1750-3841.14668] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 04/23/2019] [Accepted: 04/30/2019] [Indexed: 01/25/2023]
Abstract
It is important to inhibit the food-derived, potentially hazardous chemical glycated lipids by natural products. A model system was established and the products are identified to study the inhibitory mechanism of four types of catechin, resveratrol (RES), and the synthetic antioxidants butylated hydroxylanisole (BHA) and tert-butylhydroquinone (TBHQ) on the formation of carboxymethyl 1,2-dipalmitoyl-sn-glycero-3-phosphatidylethanolamine (CM-DPPE) by determining hydroxyl radical (OH·), Amadori-1,2-dipalmitoyl-sn-glycero-3-phosphatidylethanolamine (Amadori-DPPE) and glyoxal (GO). The results show that the inhibitory rates of catechin and RES on the content of CM-DPPE in the model system are higher than those of BHA and TBHQ. There are at least two inhibitory mechanisms of antioxidants on CM-DPPE. (1) Antioxidants scavenge OH·, which blocks the process of Amadori-DPPE oxidation to form CM-DPPE. (2) Antioxidants trap GO, which blocks the reaction between GO and DPPE to form CM-DPPE. This research will reveal the inhibitory mechanisms of natural antioxidants on glycated lipids from the aspect of scavenging OH· and trapping GO. PRACTICAL APPLICATION: Food manufacturers should pay attention on the production of glycated lipids in food processing. This study will provide the theoretical basis for the use of natural products to inhibit the formation of food-derived glycated lipids. Natural products, such as catechin and resveratrol, can substitute chemical synthesis antioxidants, such as butylated hydroxylanisole and tert-butylhydroquinone, in food processing, which inhibit the formation of glycated lipids.
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Affiliation(s)
- Lipeng Han
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou Univ., Guangzhou, 510006, China.,Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, 510640, China
| | - Qingna Lin
- School of Food Science and Engineering, South China Univ. of Technology, Guangzhou, 510640, China
| | - Guoqin Liu
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Guangzhou, 510640, China.,School of Food Science and Engineering, South China Univ. of Technology, Guangzhou, 510640, China
| | - Dongxue Han
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou Univ., Guangzhou, 510006, China
| | - Li Niu
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou Univ., Guangzhou, 510006, China
| | - Dongxiao Su
- Center for Advanced Analytical Science, School of Chemistry and Chemical Engineering, Guangzhou Univ., Guangzhou, 510006, China
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Han L, Lin Q, Liu G, Han D, Niu L, Su D. Catechin inhibits glycated phosphatidylethanolamine formation by trapping dicarbonyl compounds and forming quinone. Food Funct 2019; 10:2491-2503. [DOI: 10.1039/c9fo00155g] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Catechin inhibits glycated phosphatidylethanolamine formation by trapping dicarbonyl compounds and forming quinone.
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Affiliation(s)
- Lipeng Han
- Center for Advanced Analytical Science
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou 510006
- China
| | - Qingna Lin
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety
| | - Guoqin Liu
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety
| | - Dongxue Han
- Center for Advanced Analytical Science
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou 510006
- China
| | - Li Niu
- Center for Advanced Analytical Science
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou 510006
- China
| | - Dongxiao Su
- Center for Advanced Analytical Science
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou 510006
- China
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8
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Lin Q, Han L, Liu G, Cheng W, Wang L. A preliminary study on the formation pathways of glycated phosphatidylethanolamine of food rich in phospholipid during the heat-processing. RSC Adv 2018; 8:11280-11288. [PMID: 35542782 PMCID: PMC9078963 DOI: 10.1039/c8ra01072b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 03/08/2018] [Indexed: 11/21/2022] Open
Abstract
The formation of food-derived glycated phosphatidylethanolamine (PE) in thermal process was investigated by designing a 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE)-glucose model system heated from 40 to 100 °C for 8 h.
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Affiliation(s)
- Qingna Lin
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Lipeng Han
- School of Chemistry and Chemical Engineering
- Guangzhou University
- Guangzhou 510006
- China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety
| | - Guoqin Liu
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
- Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety
| | - Weiwei Cheng
- School of Food Science and Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Liqing Wang
- Guangdong Testing Institute of Product Quality Supervision
- Guangzhou 510670
- China
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9
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Ferro Y, Carè I, Mazza E, Provenzano F, Colica C, Torti C, Romeo S, Pujia A, Montalcini T. Protein and vitamin B6 intake are associated with liver steatosis assessed by transient elastography, especially in obese individuals. Clin Mol Hepatol 2017; 23:249-259. [PMID: 28750503 PMCID: PMC5628006 DOI: 10.3350/cmh.2017.0019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Revised: 05/09/2017] [Accepted: 06/13/2017] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND/AIMS Although the detrimental effects of several dietary components on the promotion of nonalcoholic fatty liver disease are well known, no studies have assessed the role of dietary vitamin B6. Moreover, studies on the associations between dietary components or body composition indices and liver steatosis assessed by transient elastography are rare. Our aim was to identify the nutritional factors and anthropometric parameters associated with liver steatosis. METHODS In this cross-sectional study, we enrolled 168 individuals (35% obese) who underwent a liver steatosis assessment by Controlled Attenuation Parameter measurement and nutritional assessment. RESULTS Tertiles of vitamin B6 intake were positively associated with hepatic steatosis (B=1.89, P=0.026, confidence interval [CI] 0.03-0.80) as well as with triglycerides, glucose, alanine aminotransferase (ALT), and body mass index . In obese individuals, after multivariable analysis, the Controlled Attenuation Parameter score was still associated with triglycerides, ALT, and total protein intake (B=0.56, P=0.01, CI 0.10-1.02). Participants in tertile I (low intake) had a lower Controlled Attenuation Parameter than those in tertile III (P=0.01). CONCLUSIONS We found a positive association between hepatic steatosis or Controlled Attenuation Parameter score and vitamin B6/total protein intake, probably related to the high intake of meat. Vitamin B6 might have a pathogenic role related to the increase of hepatic steatosis.
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Affiliation(s)
- Yvelise Ferro
- Department of Medical and Surgical Science, Nutrition Unit, University Magna Grecia, Catanzaro, Italy
| | - Ilaria Carè
- Department of Medical and Surgical Science, Nutrition Unit, University Magna Grecia, Catanzaro, Italy
| | - Elisa Mazza
- Department of Medical and Surgical Science, Nutrition Unit, University Magna Grecia, Catanzaro, Italy
| | - Francesco Provenzano
- Department of Medical and Surgical Science, Nutrition Unit, University Magna Grecia, Catanzaro, Italy
| | - Carmela Colica
- Department of Pharmacology, Consiglio Nazionale Ricerche, Istituto Scienze Neurologiche, University Magna Graecia, Catanzaro, Italy
| | - Carlo Torti
- Department of Medical and Surgical Science, Unit of Infectious diseases, University Magna Grecia, Catanzaro, Italy
| | - Stefano Romeo
- Department of Medical and Surgical Science, Nutrition Unit, University Magna Grecia, Catanzaro, Italy
- Department of Molecular and Clinical Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Arturo Pujia
- Department of Medical and Surgical Science, Nutrition Unit, University Magna Grecia, Catanzaro, Italy
| | - Tiziana Montalcini
- Department of Clinical and Experimental Medicine, Nutrition Unit, University Magna Grecia, Catanzaro, Italy
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10
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Yamashita S, Kanno S, Honjo A, Otoki Y, Nakagawa K, Kinoshita M, Miyazawa T. Analysis of Plasmalogen Species in Foodstuffs. Lipids 2016; 51:199-210. [DOI: 10.1007/s11745-015-4112-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 12/04/2015] [Indexed: 10/22/2022]
Affiliation(s)
- Shinji Yamashita
- ; Department of Food Science; Obihiro University of Agriculture and Veterinary Medicine; Obihiro 080-8555 Japan
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Susumu Kanno
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Ayako Honjo
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Yurika Otoki
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Kiyotaka Nakagawa
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
| | - Mikio Kinoshita
- ; Department of Food Science; Obihiro University of Agriculture and Veterinary Medicine; Obihiro 080-8555 Japan
| | - Teruo Miyazawa
- ; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
- ; Food and Biotechnology Innovation Project, New Industry Creation Hatchery Center (NICHe); Tohoku University; Sendai 980-8579 Japan
- ; Food and Health Science Research Unit, Graduate School of Agricultural Science; Tohoku University; Sendai 981-8555 Japan
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11
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Solís-Calero C, Ortega-Castro J, Frau J, Muñoz F. Nonenzymatic Reactions above Phospholipid Surfaces of Biological Membranes: Reactivity of Phospholipids and Their Oxidation Derivatives. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:319505. [PMID: 25977746 PMCID: PMC4419266 DOI: 10.1155/2015/319505] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2014] [Revised: 03/24/2015] [Accepted: 03/25/2015] [Indexed: 01/03/2023]
Abstract
Phospholipids play multiple and essential roles in cells, as components of biological membranes. Although phospholipid bilayers provide the supporting matrix and surface for many enzymatic reactions, their inherent reactivity and possible catalytic role have not been highlighted. As other biomolecules, phospholipids are frequent targets of nonenzymatic modifications by reactive substances including oxidants and glycating agents which conduct to the formation of advanced lipoxidation end products (ALEs) and advanced glycation end products (AGEs). There are some theoretical studies about the mechanisms of reactions related to these processes on phosphatidylethanolamine surfaces, which hypothesize that cell membrane phospholipids surface environment could enhance some reactions through a catalyst effect. On the other hand, the phospholipid bilayers are susceptible to oxidative damage by oxidant agents as reactive oxygen species (ROS). Molecular dynamics simulations performed on phospholipid bilayers models, which include modified phospholipids by these reactions and subsequent reactions that conduct to formation of ALEs and AGEs, have revealed changes in the molecular interactions and biophysical properties of these bilayers as consequence of these reactions. Then, more studies are desirable which could correlate the biophysics of modified phospholipids with metabolism in processes such as aging and diseases such as diabetes, atherosclerosis, and Alzheimer's disease.
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Affiliation(s)
- Christian Solís-Calero
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
| | - Joaquín Ortega-Castro
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
| | - Juan Frau
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
| | - Francisco Muñoz
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, 07122 Palma de Mallorca, Spain
- Instituto de Investigación Sanitaria de Palma, 07010 Palma, Spain
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12
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Yamashita S, Abe A, Nakagawa K, Kinoshita M, Miyazawa T. Separation and Detection of Plasmalogen in Marine Invertebrates by High-Performance Liquid Chromatography with Evaporative Light-Scattering Detection. Lipids 2014; 49:1261-73. [DOI: 10.1007/s11745-014-3957-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 09/18/2014] [Indexed: 11/28/2022]
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13
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Yamashita S, Honjo A, Aruga M, Nakagawa K, Miyazawa T. Preparation of Marine Plasmalogen and Selective Identification of Molecular Species by LC-MS/MS. J Oleo Sci 2014; 63:423-30. [DOI: 10.5650/jos.ess13188] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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14
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Caldés C, Vilanova B, Adrover M, Donoso J, Muñoz F. The hydrophobic substituent in aminophospholipids affects the formation kinetics of their Schiff bases. Bioorg Med Chem Lett 2013; 23:2202-6. [PMID: 23462644 DOI: 10.1016/j.bmcl.2013.01.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Revised: 01/22/2013] [Accepted: 01/22/2013] [Indexed: 11/16/2022]
Abstract
Schiff bases (SBs) are the initial products of non-enzymatic glycation reactions, which are associated to some diabetes-related diseases. In this work, we used physiological pH and temperature conditions to study the formation kinetics of the SBs of 1,2-dihexanoyl-sn-glycero-3-phosphoethanolamine (DPHE) and 1,2-dihexanoyl-sn-glycero-3-phospho-l-serine (DHPS) with various glycating compounds and with pyridoxal 5'-phosphate (an effective glycation inhibitor). Based on the obtained results, the hydrophobic environment simultaneously decreases the nucleophilic character of the amino group (k1) and increases its pKa, thereby increasing the formation rate of SB (kobs). Therefore, the presence of hydrophobic chains in aminophospholipids facilitates the formation and stabilization of SBs, and also, in a biological environment, their glycation. Additionally, the results confirm the inhibitory action of B6 vitamers on aminophospholipid glycation.
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Affiliation(s)
- Catalina Caldés
- Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, Cra. Valldemossa km 7.5, Ed. Mateu Orfila i Rotger, E-07122 Palma de Mallorca, Spain
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15
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Non-enzymatic modification of aminophospholipids by carbonyl-amine reactions. Int J Mol Sci 2013; 14:3285-313. [PMID: 23385235 PMCID: PMC3588044 DOI: 10.3390/ijms14023285] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2012] [Revised: 01/21/2013] [Accepted: 01/23/2013] [Indexed: 01/11/2023] Open
Abstract
Non-enzymatic modification of aminophospholipids by lipid peroxidation-derived aldehydes and reducing sugars through carbonyl-amine reactions are thought to contribute to the age-related deterioration of cellular membranes and to the pathogenesis of diabetic complications. Much evidence demonstrates the modification of aminophospholipids by glycation, glycoxidation and lipoxidation reactions. Therefore, a number of early and advanced Maillard reaction-lipid products have been detected and quantified in different biological membranes. These modifications may be accumulated during aging and diabetes, introducing changes in cell membrane physico-chemical and biological properties.
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16
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Melo T, Silva EMP, Simões C, Domingues P, Domingues MRM. Photooxidation of glycated and non-glycated phosphatidylethanolamines monitored by mass spectrometry. JOURNAL OF MASS SPECTROMETRY : JMS 2013; 48:68-78. [PMID: 23303749 DOI: 10.1002/jms.3129] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 10/15/2012] [Accepted: 10/18/2012] [Indexed: 06/01/2023]
Abstract
Phosphatidylethanolamines (PE) are one of the major components of cells membranes, namely in skin and in retina, that are continuously exposed to solar UV radiation being major targets of photooxidation damage. In addition, due to the presence of the free amine group, PE can also undergo glycation, in hyperglycemic conditions which may increase the susceptibility to oxidation. The aim of this study is to develop a model, based on mass spectrometry (MS) analysis, to identify photooxidative degradation of selected PE (POPE: PE 16:0/18:1, PLPE: PE 16:0/18:2, PAPE: PE 16:0/20:4) and glycated PEs due to UV irradiation. Photooxidation products were analysed by electrospray ionization MS (ESI-MS) and tandem MS (ESI-MS/MS) in positive and negative mode. Emphasis is placed in the influence of glycation in the generation of distinct photooxidation products. ESI-MS spectra of PE after UV photo-irradiation showed mainly hydroperoxy derivatives, due to oxidation of unsaturated fatty acyl chains. Glycated PE gave rise to several new photooxidation products formed due to oxidative cleavages of the glucose moiety, namely between C1 and C2, C2 and C3, and C5 and C6 of this sugar unit. These new products were identified by ESI-MS/MS in positive mode showing distinct neutral loss depending on the different structure of the polar head group. These new identified advanced glycated photooxidation products may have a deleterious role in the etiology of diabetic retinopathy and in diabetic retinal microvascular complications.
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Affiliation(s)
- Tânia Melo
- Mass Spectrometry Centre, QOPNA, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal
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17
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A comparative DFT study of the Schiff base formation from acetaldehyde and butylamine, glycine and phosphatidylethanolamine. Theor Chem Acc 2012. [DOI: 10.1007/s00214-012-1263-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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18
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Vilanova B, Gallardo JM, Caldés C, Adrover M, Ortega-Castro J, Muñoz F, Donoso J. Formation of Schiff Bases of O-Phosphorylethanolamine and O-Phospho-d,l-serine with Pyridoxal 5′-Phosphate. Experimental and Theoretical Studies. J Phys Chem A 2012; 116:1897-905. [DOI: 10.1021/jp2116033] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bartolomé Vilanova
- Institut
Universitari d’Investigació
en Ciències de la Salut (IUNICS), Departament de
Química, Universitat de les Illes Balears, Ctra Valldemosa km 7.5, E-07122 Palma de Mallorca,
Spain
| | - Jessica M. Gallardo
- Institut
Universitari d’Investigació
en Ciències de la Salut (IUNICS), Departament de
Química, Universitat de les Illes Balears, Ctra Valldemosa km 7.5, E-07122 Palma de Mallorca,
Spain
| | - Catalina Caldés
- Institut
Universitari d’Investigació
en Ciències de la Salut (IUNICS), Departament de
Química, Universitat de les Illes Balears, Ctra Valldemosa km 7.5, E-07122 Palma de Mallorca,
Spain
| | - Miquel Adrover
- Institut
Universitari d’Investigació
en Ciències de la Salut (IUNICS), Departament de
Química, Universitat de les Illes Balears, Ctra Valldemosa km 7.5, E-07122 Palma de Mallorca,
Spain
| | - Joaquín Ortega-Castro
- Institut
Universitari d’Investigació
en Ciències de la Salut (IUNICS), Departament de
Química, Universitat de les Illes Balears, Ctra Valldemosa km 7.5, E-07122 Palma de Mallorca,
Spain
| | - Francisco Muñoz
- Institut
Universitari d’Investigació
en Ciències de la Salut (IUNICS), Departament de
Química, Universitat de les Illes Balears, Ctra Valldemosa km 7.5, E-07122 Palma de Mallorca,
Spain
| | - Josefa Donoso
- Institut
Universitari d’Investigació
en Ciències de la Salut (IUNICS), Departament de
Química, Universitat de les Illes Balears, Ctra Valldemosa km 7.5, E-07122 Palma de Mallorca,
Spain
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19
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Hong IH, Yu HG, Park SP. Suppression of VEGF and Decrease in Vascular Leakage by Pyridoxal 5'-Phosphate in Diabetic Rats. JOURNAL OF THE KOREAN OPHTHALMOLOGICAL SOCIETY 2012. [DOI: 10.3341/jkos.2012.53.5.700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- In Hwan Hong
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Hyeong Gon Yu
- Department of Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
- Seoul Artificial Eye Center, Seoul National University Hospital Clinical Research Institute, Seoul, Korea
| | - Sung Pyo Park
- Department of Ophthalmology, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
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20
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Simultaneous determination of Maillard reaction impurities in memantine tablets using HPLC with charged aerosol detector. J Pharm Biomed Anal 2011; 56:887-94. [DOI: 10.1016/j.jpba.2011.07.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 07/09/2011] [Accepted: 07/11/2011] [Indexed: 11/21/2022]
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21
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Advanced-glycation-end-product-cholesterol-aggregated-protein accelerates the proliferation of mesangial cells mediated by transforming-growth-factor-beta 1 receptors and the ERK-MAPK pathway. Eur J Pharmacol 2011; 672:159-68. [DOI: 10.1016/j.ejphar.2011.09.185] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 09/21/2011] [Accepted: 09/24/2011] [Indexed: 01/30/2023]
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22
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Caldés C, Vilanova B, Adrover M, Muñoz F, Donoso J. Understanding non-enzymatic aminophospholipid glycation and its inhibition. Polar head features affect the kinetics of Schiff base formation. Bioorg Med Chem 2011; 19:4536-43. [DOI: 10.1016/j.bmc.2011.06.018] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2011] [Revised: 06/01/2011] [Accepted: 06/08/2011] [Indexed: 02/02/2023]
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23
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Sookwong P, Nakagawa K, Fujita I, Shoji N, Miyazawa T. Amadori-glycated phosphatidylethanolamine, a potential marker for hyperglycemia, in streptozotocin-induced diabetic rats. Lipids 2011; 46:943-52. [PMID: 21732214 DOI: 10.1007/s11745-011-3588-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2011] [Accepted: 06/14/2011] [Indexed: 10/18/2022]
Abstract
It has been demonstrated in vivo that lipid glycation products such as Amadori-glycated phosphatidylethanolamine (Amadori-PE) accumulate in the plasma of diabetic humans and animals, but how lipid glycation products are formed under hyperglycemic conditions are not clear. We sought to clarify the occurrence of lipid glycation and its relationships with lipid peroxidation and protein glycation during the development of hyperglycemia using the streptozotocin (STZ)-induced diabetic rat model. A significant increase in Amadori-PE was observed in STZ rats 7 days after STZ treatment, and Amadori-PE (especially 18:0-20:4 Amadori-PE) was found at high levels in the blood and in organs that are strongly affected by diabetes, such as the kidney. Significant changes in Amadori-PE appeared to occur prior to changes in levels of oxidized lipids, which increased after 21-28 days. In addition, accumulation of Nε-(carboxymethyl)lysine (CML), a protein glycation product, proceeded somewhat more slowly and moderately than that of Amadori-PE, suggesting that Amadori-PE and CML are early and advanced glycation products, respectively. Our results suggest that Amadori-PE may be a useful predictive marker for hyperglycemia, particularly in the early stages of diabetes. Similar speculations have been made from previous human studies, but this study provides a direct evidence to support the speculations in rat study.
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Affiliation(s)
- Phumon Sookwong
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, 981-8555, Japan
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24
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Solís-Calero C, Ortega-Castro J, Muñoz F. Reactivity of a phospholipid monolayer model under periodic boundary conditions: a density functional theory study of the Schiff base formation between phosphatidylethanolamine and acetaldehyde. J Phys Chem B 2010; 114:15879-85. [PMID: 21077587 DOI: 10.1021/jp1088367] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A mechanism for the formation of the Schiff base between an acetaldehyde and an amine-phospholipid monolayer model based on Dmol3/density functional theory calculations under periodic boundary conditions was constructed. This is the first time such a system has been modeled to examine its chemical reactivity at this computation level. Each unit cell contains two phospholipid molecules, one acetaldehyde molecule, and nine water molecules. One of the amine-phospholipid molecules in the cell possesses a neutral amino group that is used to model the nucleophilic attack on the carboxyl group of acetaldehyde, whereas the other has a charged amino group acting as a proton donor. The nine water molecules form a hydrogen bond network along the polar heads of the phospholipids that facilitates very fast proton conduction at the interface. Using periodic boundary conditions afforded proton transfer between different cells. The reaction takes place in two steps, namely, (1) formation of a carbinolamine and (2) its dehydration to the Schiff base. The carbinolamine is the primary reaction intermediate, and dehydration is the rate-determining step of the process, consistent with available experimental evidence for similar reactions. On the basis of the results, the cell membrane surface environment may boost phospholipid glycation via a neighboring catalyst effect.
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Affiliation(s)
- Christian Solís-Calero
- Institut d'Investigació en Ciències de la Salut (IUNICS), Departament de Química, Universitat de les Illes Balears, E-07122 Palma de Mallorca, Spain
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25
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Miyazawa T, Nakagawa K, Shimasaki S, Nagai R. Lipid glycation and protein glycation in diabetes and atherosclerosis. Amino Acids 2010; 42:1163-70. [PMID: 20957396 DOI: 10.1007/s00726-010-0772-3] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Accepted: 08/24/2010] [Indexed: 12/15/2022]
Abstract
Recent instrumental analyses using a hybrid quadrupole/linear ion trap spectrometer in LC-MS/MS have demonstrated that the Maillard reaction progresses not only on proteins but also on amino residues of membrane lipids such as phosphatidylethanolamine (PE), thus forming Amadori-PE (deoxy-D: -fructosyl PE) as the principal products. The plasma Amadori-PE level is 0.08 mol% of the total PE in healthy subjects and 0.15-0.29 mol% in diabetic patients. Pyridoxal 5'-phosphate and pyridoxal are the most effective lipid glycation inhibitors, and the PE-pyridoxal 5'-phosphate adduct is detectable in human red blood cells. These findings are beneficial for developing a potential clinical marker for glycemic control as well as potential compounds to prevent the pathogenesis of diabetic complications and atherosclerosis. Glucose and other aldehydes, such as glyoxal, methylglyoxal, and glycolaldehyde, react with the amino residues of proteins to form Amadori products and Heynes rearrangement products. Because several advanced glycation end-product (AGE) inhibitors such as pyridoxamine and benfotiamine inhibit the development of retinopathy and neuropathy in streptozotocin (STZ)-induced diabetic rats, AGEs may play a role in the development of diabetic complications. In the present review, we describe the recent progress and future applications of the Maillard reaction research regarding lipid and protein modifications in diabetes and atherosclerosis.
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Affiliation(s)
- Teruo Miyazawa
- Food and Biodynamic Chemistry Laboratory, Tohoku University, Tsutsumidori Amamiyamachi 1-1, Sendai, 981-8555, Japan.
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26
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Oxidation of glycated phosphatidylethanolamines: evidence of oxidation in glycated polar head identified by LC-MS/MS. Anal Bioanal Chem 2010; 397:2417-27. [PMID: 20499053 DOI: 10.1007/s00216-010-3825-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2010] [Revised: 04/26/2010] [Accepted: 05/04/2010] [Indexed: 01/30/2023]
Abstract
Phosphatidylethanolamine glycation occurs in diabetic patients and was found to be related with oxidative stress and with diabetic complications. Glycated phosphatidylethanolamines seem to increase oxidation of other molecules; however, the reason why is not understood. In this work, we have studied the oxidation of glycated phosphatidylethanolamines (1-palmitoyl-2-linoleoyl-sn-glycero-3-phosphatidylethanolamine (PLPE) and 1,2-dipalmitoyl-sn-glycero-3-phosphatidylethanolamine (dPPE)) using a Fenton system. Liquid chromatography-electrospray ionization (ESI)-mass spectrometry and ESI-tandem mass spectrometry in both positive and negative modes were used for detecting and identifying the oxidation products. We were able to identify several oxidation products with oxidation in unsaturated sn-2 acyl chain of PLPE, as long- and short-chain products with main oxidation sites on C-7, C-8, C-9, and C-12 carbons. Other products were identified in both glycated PLPE and glycated dPPE, revealing that oxidation also occurs in the glycated polar head. This fact has not been reported before. These products may be generated from oxidation of glycated phosphatidylethanolamines (PE) as Schiff base, leading to short-chain product without the amine moiety, due to cleavage of glycated polar head and long-chain product with two keto groups linked to the glycated polar head or from glycated PE as Amadori product, short-chain products with -NHCHO and -NHCHOHCHO terminal in polar head. Oxidation of glycated phosphatidylethanolamines occurred more quickly than the oxidation of non-glycated phosphatidylethanolamines probably because of the existence of more oxidation sites derived from glycation of polar head group. Monitoring glycated polar head oxidation could be important to evaluate oxidative stress modifications that occur in diabetic patients.
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27
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Shoji N, Nakagawa K, Asai A, Fujita I, Hashiura A, Nakajima Y, Oikawa S, Miyazawa T. LC-MS/MS analysis of carboxymethylated and carboxyethylated phosphatidylethanolamines in human erythrocytes and blood plasma. J Lipid Res 2010; 51:2445-53. [PMID: 20386060 DOI: 10.1194/jlr.d004564] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
An amino group of phosphatidylethanolamine (PE) is considered as a target for nonenzymatic glycation, and the potential involvement of lipid glycation in the pathogenesis of diabetic complications has generated interest. However, unlike an early glycation product of PE (Amadori-PE), the occurrence and roles of advanced glycation end products of PE (AGE-PE) in vivo have been unclear. Here, we developed an LC-MS/MS method for the analysis of AGE-PE [carboxymethyl-PE (CM-PE) and carboxyethyl-PE (CE-PE)]. Collision-induced dissociation of CM-PE and CE-PE produced characteristic ions, permitting neutral loss scanning (NLS) and multiple reaction monitoring (MRM) of AGE-PE. By NLS analysis, a series of AGE-PE molecular species was detected in human erythrocytes and blood plasma. In LC-MS/MS analysis, MRM enabled the separation and determination of the predominant AGE-PE species. Between healthy subjects and diabetic patients, no significant differences were observed in AGE-PE concentrations in erythrocytes and plasma, whereas Amadori-PE concentrations were higher in diabetic patients. These results provide direct evidence for the presence of AGE-PE in human blood, and indicated that, compared with Amadori-PE, AGE-PE is less likely to be accumulated in diabetic blood. The presently developed LC-MS/MS method appears to be a powerful tool for understanding in vivo lipid glycation and its pathophysiological consequence.
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Affiliation(s)
- Naoki Shoji
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai 981-8555, Japan
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28
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Mooney S, Leuendorf JE, Hendrickson C, Hellmann H. Vitamin B6: a long known compound of surprising complexity. Molecules 2009; 14:329-51. [PMID: 19145213 PMCID: PMC6253932 DOI: 10.3390/molecules14010329] [Citation(s) in RCA: 166] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 01/07/2009] [Accepted: 01/09/2009] [Indexed: 12/31/2022] Open
Abstract
In recent years vitamin B6 has become a focus of research describing the compound’s critical function in cellular metabolism and stress response. For many years the sole function of vitamin B6 was considered to be that of an enzymatic cofactor. However, recently it became clear that it is also a potent antioxidant that effectively quenches reactive oxygen species and is thus of high importance for cellular well-being. In view of the recent findings, the current review takes a look back and summarizes the discovery of vitamin B6 and the elucidation of its structure and biosynthetic pathways. It provides a detailed overview on vitamin B6 both as a cofactor and a protective compound. Besides these general characteristics of the vitamin, the review also outlines the current literature on vitamin B6 derivatives and elaborates on recent findings that provide new insights into transport and catabolism of the compound and on its impact on human health.
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Affiliation(s)
- Sutton Mooney
- School of Biological Sciences, Washington State University, Pullman, WA, USA; E-mail: (S. M.), (C. H.)
| | - Jan-Erik Leuendorf
- Angewandte Genetik, Freie Universität Berlin, 14195 Berlin, Germany E-mail: (J-E. L.)
| | - Christopher Hendrickson
- School of Biological Sciences, Washington State University, Pullman, WA, USA; E-mail: (S. M.), (C. H.)
| | - Hanjo Hellmann
- School of Biological Sciences, Washington State University, Pullman, WA, USA; E-mail: (S. M.), (C. H.)
- Author to whom correspondence should be addressed; E-Mail:
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29
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Effects of phosphatidylethanolamine glycation on lipid-protein interactions and membrane protein thermal stability. Biochem J 2008; 416:145-52. [PMID: 18564061 DOI: 10.1042/bj20080618] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Non-enzymatic glycation of biomolecules has been implicated in the pathophysiology of aging and diabetes. Among the potential targets for glycation are biological membranes, characterized by a complex organization of lipids and proteins interacting and forming domains of different size and stability. In the present study, we analyse the effects of glycation on the interactions between membrane proteins and lipids. The phospholipid affinity for the transmembrane surface of the PMCA (plasma-membrane Ca(2+)-ATPase) was determined after incubating the protein or the phospholipids with glucose. Results show that the affinity between PMCA and the surrounding phospholipids decreases significantly after phosphospholipid glycation, but remains unmodified after glycation of the protein. Furthermore, phosphatidylethanolamine glycation decreases by approximately 30% the stability of PMCA against thermal denaturation, suggesting that glycated aminophospholipids induce a structural rearrangement in the protein that makes it more sensitive to thermal unfolding. We also verified that lipid glycation decreases the affinity of lipids for two other membrane proteins, suggesting that this effect might be common to membrane proteins. Extending these results to the in vivo situation, we can hypothesize that, under hyperglycaemic conditions, glycation of membrane lipids may cause a significant change in the structure and stability of membrane proteins, which may affect the normal functioning of membranes and therefore of cells.
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30
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Miyazawa T, Ibusuki D, Yamashita S, Nakagawa K. Analysis of amadori-glycated phosphatidylethanolamine in the plasma of healthy subjects and diabetic patients by liquid chromatography-tandem mass spectrometry. Ann N Y Acad Sci 2008; 1126:291-4. [PMID: 18448834 DOI: 10.1196/annals.1433.033] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Peroxidized phospholipid-mediated cytotoxity, the abnormal increase in the levels of phosphatidylcholine hydroperoxide (PCOOH) found in the plasma of type 2 diabetic patients, is involved in the pathophysiology of many diseases. PCOOH accumulation may be related to Amadori-glycated phosphatidylethanolamine (deoxy-D-fructosyl PE, or Amadori-PE) because Amadori-PE causes oxidative stress. However, the occurrence of lipid glycation products, including Amadori-PE, in vivo remains unclear. We developed a method to analyze Amadori-PE by using quadrupole/linear ion-trap mass spectrometry, the Applied Biosystems 4000 Q TRAP. We found that pyridoxals could easily be condensed with PE before the glucose-PE reaction occurred. The PE-pyridoxal 5'-phosphate adduct was detectable in human red blood cells, and the increased plasma Amadori-PE concentration in streptozotocin-induced diabetic rats was decreased by dietary supplementation with pyridoxal 5'-phosphate. Therefore, it is likely that pyridoxal 5'-phosphate acts as a lipid glycation inhibitor in vivo, and this may contribute to diabetes prevention.
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Affiliation(s)
- Teruo Miyazawa
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University, Sendai, Japan.
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31
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Ardestani A, Yazdanparast R, Nejad AS. 2-Deoxy-d-ribose-induced oxidative stress causes apoptosis in human monocytic cells: Prevention by pyridoxal-5′-phosphate. Toxicol In Vitro 2008; 22:968-79. [DOI: 10.1016/j.tiv.2008.02.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2007] [Revised: 01/26/2008] [Accepted: 02/06/2008] [Indexed: 01/09/2023]
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32
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Nakagawa K, Ibusuki D, Yamashita S, Miyazawa T. Glycation of Plasma Lipoprotein Lipid Membrane and Screening for Lipid Glycation Inhibitor. Ann N Y Acad Sci 2008; 1126:288-90. [DOI: 10.1196/annals.1433.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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33
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MIYAZAWA T, SHOJI N, NAKAGAWA K. Evidence of Biomembrane Lipid Glycation. BUNSEKI KAGAKU 2006. [DOI: 10.2116/bunsekikagaku.55.907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Teruo MIYAZAWA
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University
| | - Naoki SHOJI
- Industrial Technology Institute, Miyagi Prefectural Government
| | - Kiyotaka NAKAGAWA
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Science, Tohoku University
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