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Pedreanez A, Robalino J, Tene D, Salazar P. Advanced glycation end products of dietary origin and their association with inflammation in diabetes - A minireview. Endocr Regul 2024; 58:57-67. [PMID: 38563294 DOI: 10.2478/enr-2024-0007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/04/2024] Open
Abstract
Advanced glycation end products (AGEs) are a diverse group of compounds that are formed as a result of the non-enzymatic reaction between a reducing sugar such as glucose and the free NH2 groups of an amino acid in a protein or other biomolecule. The chemical reaction, by which these products are generated, is known as the Maillard reaction and occurs as a part of the body's normal metabolism. Such a reaction is enhanced during diabetes due to hyperglycemia, but it can also occur during the preparation, processing, and preservation of certain foods. Therefore, AGEs can also be obtained from the diet (d-AGE) and contribute to an increase of the total serum pool of these compounds. They have been implicated in a wide variety of pathological processes, mainly because of their ability to induce inflammatory responses and oxidative stress increase. They are extensively accumulated as a part of the normal aging, especially in tissues rich in long half-life proteins, which can compromise the physiology of these tissues. d-AGEs are abundant in diets rich in processed fats and sugars. This review is addressed to the current knowledge on these products and their impact on the immunomodulation of various mechanisms that may contribute to exacerbation of the diabetes pathophysiology.
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Affiliation(s)
- Adriana Pedreanez
- Catedra de Inmunologia, Escuela de Bioanalisis, Facultad de Medicina, Universidad del Zulia, Maracaibo, Venezuela
| | | | - Diego Tene
- Universidad Nacional del Chimborazo, Facultad de Ciencias de la Salud, Riobamba, Ecuador
| | - Patricio Salazar
- Departamento de Nutricion Clinica, Hospital General Santo Domingo, Ecuador
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2
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Xie Y, van der Fels-Klerx HJ, van Leeuwen SPJ, Fogliano V. Occurrence of dietary advanced glycation end-products in commercial cow, goat and soy protein based infant formulas. Food Chem 2023; 411:135424. [PMID: 36652883 DOI: 10.1016/j.foodchem.2023.135424] [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: 08/29/2022] [Revised: 10/29/2022] [Accepted: 01/05/2023] [Indexed: 01/09/2023]
Abstract
Thermal treatment is a key step during infant formula (IF) processing which causes protein glycation and formation of dietary advanced glycation end-products (dAGEs). This study aimed to evaluate the glycation degree in IF in relation to the ingredients of the formula. dAGEs concentrations have been determined by UPLC-MS/MS in a range of commercial cow-based, goat-based, and soy-based IF. Results indicated that the protein source, protein composition, and amount and type of carbohydrates determines the level of protein glycation in IFs. The investigated soy-based formula had significant higher concentrations of arginine and arginine-derived dAGEs than cow-based and goat-based formulas. IF containing hydrolyzed proteins had higher dAGEs concentrations than those containing intact proteins. Lactose-containing formula was more prone to glycation than those containing sucrose and maltodextrin. Data showed glycation degree in IF cannot be estimated by a single compound, but the complete picture of the dAGEs should be considered.
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Affiliation(s)
- Yajing Xie
- Food Quality and Design Group, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands; Wageningen Food Safety Research, Akkermaalsbos 2, 6708 WB Wageningen, The Netherlands
| | | | | | - Vincenzo Fogliano
- Food Quality and Design Group, Wageningen University, P.O. Box 17, 6700 AA Wageningen, The Netherlands
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Garg A, Alam M, Bai S, Dandawate M, Kumari N, Gupta S, Agrawal U, Nagarajan P, Reddy DS, Kulkarni MJ, Mukhopadhyay A. Protective Effects of Rifampicin and Its Analog Rifampicin Quinone in a Mouse Model of Obesity-Induced Type 2 Diabetes. ACS Pharmacol Transl Sci 2023; 6:253-269. [PMID: 36798477 PMCID: PMC9926524 DOI: 10.1021/acsptsci.2c00082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Indexed: 01/13/2023]
Abstract
Advanced glycation end-products (AGEs) form when glucose reacts non-enzymatically with proteins, leading to abnormal protein function, oxidative stress, and inflammation. AGEs are associated with aging and age-related diseases; their formation is aggravated during diabetes. Therefore, drugs preventing AGE formation can potentially treat diabetic complications, positively affecting health. Earlier, we demonstrated that rifampicin and its analogs have potent anti-glycating activities and increase the life span of Caenorhabditis elegans. This study aimed to investigate the effects of rifampicin during hyperglycemia in C. elegans and in a mouse model of obesity-induced type 2 diabetes. The effects of rifampicin were assessed by determining the life span of C. elegans cultured in the presence of glucose and by measuring HbA1c, AGE levels, and glucose excursions in the diabetic mouse model. Our results show that rifampicin protects C. elegans from glucose-induced toxicity and increases life span. In mice, rifampicin reduces HbA1c and AGEs, improves insulin sensitivity, and reduces indications of diabetic nephropathy without inducing hepatotoxicity. Rifampicin quinone, an analog with lower anti-microbial activity, also reduces HbA1c levels, improves glucose homeostasis and insulin sensitivity, and lowers indications of diabetic nephropathy, without adversely affecting the liver of the diabetic mice. Altogether, our results indicate that rifampicin and its analog have protective roles during diabetes without inflicting hepatic damage and may potentially be considered for repositioning to treat hyperglycemia-related complications in patients.
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Affiliation(s)
- Amit Garg
- Molecular
Aging Laboratory, National Institute of
Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Maroof Alam
- Molecular
Aging Laboratory, National Institute of
Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Shakuntala Bai
- Biochemical
Sciences Division, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Monica Dandawate
- CSIR
− Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Organic Chemistry
Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Neeta Kumari
- Organic Chemistry
Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Sonu Gupta
- Molecular
Aging Laboratory, National Institute of
Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Usha Agrawal
- ICMR-National
Institute of Pathology, Sriramachari Bhawan, Safdarjung Hospital Campus, New Delhi 110029, India
| | - Perumal Nagarajan
- Molecular
Aging Laboratory, National Institute of
Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
| | - Dumbala Srinivasa Reddy
- CSIR
− Indian Institute of Integrative Medicine, Canal Road, Jammu 180001, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
- Organic Chemistry
Division, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
| | - Mahesh J. Kulkarni
- Biochemical
Sciences Division, CSIR-National Chemical
Laboratory, Dr. Homi Bhabha Road, Pune 411008, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arnab Mukhopadhyay
- Molecular
Aging Laboratory, National Institute of
Immunology, Aruna Asaf Ali Marg, New Delhi 110067, India
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Sengani M, Chakraborty S, Balaji MP, Govindasamy R, Alahmadi TA, Al Obaid S, Karuppusamy I, Lan Chi NT, Brindhadevi K, V DR. Anti-diabetic efficacy and selective inhibition of methyl glyoxal, intervention with biogenic Zinc oxide nanoparticle. ENVIRONMENTAL RESEARCH 2023; 216:114475. [PMID: 36244440 DOI: 10.1016/j.envres.2022.114475] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/27/2022] [Accepted: 09/29/2022] [Indexed: 06/16/2023]
Abstract
Non-enzymatic glycation of biomolecules results in advanced glycation end products (AGEs), which are responsible for secondary complications in diabetes. Inhibiting methyl glyoxal (MGO) induced advanced glycation end product (AGE) formation is the only way to alleviate diabetic complications. This study aimed to look into the abilities of herbal extract Kigelia africana and K. africana synthesized zinc oxide nanoparticles (ZnONPs) to inhibit the emergence of MG-derived AGEs. The study intended to determine antioxidant and AGE inhibition of the plant extract and ZnONPs. ZnONPs were tested for the efficiency of anti-diabetic activity in streptozotocin-induced diabetic Wister rats. We discovered that the MGO-trapping effects on the prevention of AGE production were mediated by the downregulation of the amplification of MGO-trapping impacts on the hypoglycemic and antihyperlipidemic mechanisms of ZnONPs. According to histological findings, the treatment with ZnONPs also successfully lowers inflammation in the hepatic and renal tissues. Overall, future mechanistic research could establish ZnONPs potential anti-diabetic properties.
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Affiliation(s)
- Manimegalai Sengani
- Department of Biotechnology, College of Science and Humanities, SRM Institute of Science and Technology, Rampuram, Chennai, 87, India
| | - Shreya Chakraborty
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, 14, Tamil Nadu, India
| | - Menaka Priya Balaji
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, 14, Tamil Nadu, India
| | - Rajakumar Govindasamy
- Department of Orthodontics Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha University, Chennai, India
| | - Tahani Awad Alahmadi
- Department of Pediatrics, College of Medicine and King Khalid University Hospital, King Saud University, Medical City, PO Box-2925, Riyadh, 11461, Saudi Arabia
| | - Sami Al Obaid
- Department of Botany and Microbiology, College of Science, King Saud University, PO Box -2455, Riyadh, 11451, Saudi Arabia
| | - Indira Karuppusamy
- Research Center for Strategic Materials, Corrosion Resistant Steel Group, National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Nguyen Thuy Lan Chi
- School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam
| | - Kathirvel Brindhadevi
- Computational Engineering and Design Research Group, School of Engineering and Technology, Van Lang University, Ho Chi Minh City, Viet Nam.
| | - Devi Rajeswari V
- Department of Biomedical Sciences, School of Biosciences and Technology, Vellore Institute of Technology, Vellore, 14, Tamil Nadu, India.
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Feldman T, Ostrovskiy D, Yakovleva M, Dontsov A, Borzenok S, Ostrovsky M. Lipofuscin-Mediated Photic Stress Induces a Dark Toxic Effect on ARPE-19 Cells. Int J Mol Sci 2022; 23:12234. [PMID: 36293088 PMCID: PMC9602730 DOI: 10.3390/ijms232012234] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/10/2022] [Accepted: 10/11/2022] [Indexed: 12/25/2023] Open
Abstract
Lipofuscin granules from retinal pigment epithelium (RPE) cells contain bisretinoid fluorophores, which are photosensitizers and are phototoxic to cells. In the presence of oxygen, bisretinoids are oxidized to form various products, containing aldehydes and ketones, which are also potentially cytotoxic. In a prior study, we identified that bisretinoid oxidation and degradation products have both hydrophilic and amphiphilic properties, allowing their diffusion through the lipofuscin granule membrane into the RPE cell cytoplasm, and are thiobarbituric acid (TBA)-active. The purpose of the present study was to determine if these products exhibit a toxic effect to the RPE cell also in the absence of light. The experiments were performed using the lipofuscin-fed ARPE-19 cell culture. The RPE cell viability analysis was performed with the use of flow cytofluorimetry and laser scanning confocal microscopy. The results obtained indicated that the cell viability of the lipofuscin-fed ARPE-19 sample was clearly reduced not immediately after visible light irradiation for 18 h, but after 4 days maintaining in the dark. Consequently, we could conclude that bisretinoid oxidation products have a damaging effect on the RPE cell in the dark and can be considered as an aggravating factor in age-related macular degeneration progression.
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Affiliation(s)
- Tatiana Feldman
- Department of Biology, Lomonosov Moscow State University, Leninskiye Gory 1, 119234 Moscow, Russia
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygin Street, 119334 Moscow, Russia
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, 119334 Moscow, Russia
| | - Dmitriy Ostrovskiy
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, 119334 Moscow, Russia
- Sv. Fyodorov Eye Microsurgery Complex, 59a Beskudnikovsky bld., 127486 Moscow, Russia
| | - Marina Yakovleva
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygin Street, 119334 Moscow, Russia
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, 119334 Moscow, Russia
| | - Alexander Dontsov
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygin Street, 119334 Moscow, Russia
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, 119334 Moscow, Russia
| | - Sergey Borzenok
- Sv. Fyodorov Eye Microsurgery Complex, 59a Beskudnikovsky bld., 127486 Moscow, Russia
| | - Mikhail Ostrovsky
- Department of Biology, Lomonosov Moscow State University, Leninskiye Gory 1, 119234 Moscow, Russia
- Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, 4 Kosygin Street, 119334 Moscow, Russia
- Koltzov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov Street, 119334 Moscow, Russia
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Feng L, Cui H, Chen P, Hayat K, Zhang X, Ho CT. Promoted Formation of Pyrazines and Sulfur-Containing Volatile Compounds through Interaction of Extra-Added Glutathione or Its Constituent Amino Acids and Secondary Products of Thermally Degraded N-(1-Deoxy-d-ribulos-1-yl)-Glutathione. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:9095-9105. [PMID: 35838405 DOI: 10.1021/acs.jafc.2c02949] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
An Amadori rearrangement product (ARP) derived from ribose (Rib) and glutathione (GSH) was prepared and identified as N-(1-deoxy-d-ribulos-1-yl)-glutathione by ultraperformance liquid chromatography-tandem mass spectrometry and NMR. Thermal treatment of the ARP aqueous solution was conducted, and a relatively high temperature was found to accelerate the degradation of the ARP. The concentration of furans formed at 120 °C was more than 6.39 times that at 100 °C, and especially, the high temperature favored the formation of furfural and 4-hydroxy-5-methyl-3(2H)-furanone through deoxyosone dehydration. The promoting role of extra-added GSH or its constituent amino acids was investigated in the volatile formation during thermal processing of the ARP. Both, the added GSH and its constituent amino acids, could timely capture glyoxal (GO) and methylglyoxal (MGO) to facilitate Strecker degradation, which improved pyrazine formation. Compared with glycine and glutamic acid, cysteine was the most effective extra-added amino acid to react with GO and MGO to produce pyrazine and methylpyrazine. More importantly, the cysteine degraded from extra-added GSH effectively accelerated the generation of sulfur-containing volatile compounds through the reaction of cysteine degradation products with furans and shorter-chain α-dicarbonyl compounds.
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Affiliation(s)
- Linhui Feng
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Heping Cui
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Pusen Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Khizar Hayat
- Department of Kinesiology, Nutrition, and Health, Miami University, Oxford, Ohio 45056, United States
| | - Xiaoming Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, P. R. China
| | - Chi-Tang Ho
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901, United States
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Zhou X, Venigalla M, Raju R, Münch G. Pharmacological considerations for treating neuroinflammation with curcumin in Alzheimer's disease. J Neural Transm (Vienna) 2022; 129:755-771. [PMID: 35294663 DOI: 10.1007/s00702-022-02480-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Accepted: 02/19/2022] [Indexed: 12/14/2022]
Abstract
Prof. Dr. Peter Riederer, the former Head of the Neurochemistry Department of the Psychiatry and Psychotherapy Clinic at the University of Würzburg (Germany), has been one of the pioneers of research into oxidative stress in Parkinson's and Alzheimer's disease (AD). This review will outline how his scientific contribution to the field has opened a new direction for AD treatment beyond "plaques and tangles". In the 1990s, Prof. Riederer was one of the first scientists who proposed oxidative stress and neuroinflammation as one of the major contributors to Alzheimer's disease, despite the overwhelming support for the "amyloid-only" hypothesis at the time, which postulated that the sole and only cause of AD is β-amyloid. His group also highlighted the role of advanced glycation end products, sugar and dicarbonyl-derived protein modifications, which crosslink proteins into insoluble aggregates and potent pro-inflammatory activators of microglia. For the treatment of chronic neuroinflammation, he and his group suggested that the most appropriate drug class would be cytokine-suppressive anti-inflammatory drugs (CSAIDs) which have a broader anti-inflammatory action range than conventional non-steroidal anti-inflammatory drugs. One of the most potent CSAIDs is curcumin, but it suffers from a variety of pharmacokinetic disadvantages including low bioavailability, which might have tainted many human clinical trials. Although a variety of oral formulations with increased bioavailability have been developed, curcumin's absorption after oral delivery is too low to reach therapeutic concentrations in the micromolar range in the systemic circulation and the brain. This review will conclude with evidence that rectally applied suppositories might be the best alternatives to oral medications, as this route will be able to evade first-pass metabolism in the liver and achieve high concentrations of curcumin in plasma and tissues, including the brain.
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Affiliation(s)
- Xian Zhou
- NICM Health Research Institute, Western Sydney University, 158-160 Hawkesbury Rd, Westmead, NSW, 2145, Australia
| | - Madhuri Venigalla
- Pharmacology Unit, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Ritesh Raju
- Pharmacology Unit, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Gerald Münch
- Pharmacology Unit, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia.
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Revisiting Methodologies for In Vitro Preparations of Advanced Glycation End Products. Appl Biochem Biotechnol 2022; 194:2831-2855. [PMID: 35257316 DOI: 10.1007/s12010-022-03860-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Accepted: 02/24/2022] [Indexed: 11/02/2022]
Abstract
Chronic elevation of sugar and oxidative stress generally results in development of advanced glycation end products (AGEs) in diabetic individuals. Accumulation of AGEs in an individual can give rise to the activation of several pathways that will ultimately lead to various complications. Such AGEs can also be prepared in an in vitro environment. For an in vitro preparation of advanced glycation end products (AGEs), proteins, lipids, or nucleic acids are generally required to be incubated with reducing sugars at a physiological temperature or higher depending upon the protocol optimized for its preparation. Certain other factors are also optimized and added to the buffer to hasten its preparation or alter the properties of prepared AGEs. Through this review, we intend to highlight the various studies related to the experimental procedures for the preparation of different types of AGEs. In addition, we present the comparative study of methodologies optimized for the preparation of AGEs.
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Lipofuscin Granule Bisretinoid Oxidation in the Human Retinal Pigment Epithelium forms Cytotoxic Carbonyls. Int J Mol Sci 2021; 23:ijms23010222. [PMID: 35008647 PMCID: PMC8745408 DOI: 10.3390/ijms23010222] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/16/2021] [Accepted: 12/22/2021] [Indexed: 01/06/2023] Open
Abstract
Age-related macular degeneration (AMD) is the primary cause of central blindness among the elderly. AMD is associated with progressive accumulation of lipofuscin granules in retinal pigment epithelium (RPE) cells. Lipofuscin contains bisretinoid fluorophores, which are photosensitizers and are phototoxic to RPE and neuroretinal cells. In the presence of oxygen, bisretinoids are also oxidized, forming various products, consisting primarily of aldehydes and ketones, which are also potentially cytotoxic. In a prior study, we identified that in AMD, bisretinoid oxidation products are increased in RPE lipofuscin granules. The purpose of the present study was to determine if these products were toxic to cellular structures. The physicochemical characteristics of bisretinoid oxidation products in lipofuscin, which were obtained from healthy donor eyes, were studied. Raman spectroscopy and time-of-flight secondary ion mass spectrometry (ToF–SIMS) analysis identified the presence of free-state aldehydes and ketones within the lipofuscin granules. Together, fluorescence spectroscopy, high-performance liquid chromatography, and mass spectrometry revealed that bisretinoid oxidation products have both hydrophilic and amphiphilic properties, allowing their diffusion through lipofuscin granule membrane into the RPE cell cytoplasm. These products contain cytotoxic carbonyls, which can modify cellular proteins and lipids. Therefore, bisretinoid oxidation products are a likely aggravating factor in the pathogenesis of AMD.
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Van Vlierberghe K, Gavage M, Dieu M, Renard P, Arnould T, Gillard N, Coudijzer K, De Loose M, Gevaert K, Van Poucke C. Selecting processing robust markers using high resolution mass spectrometry for the detection of milk in food products. J AOAC Int 2021; 105:463-475. [PMID: 34791331 DOI: 10.1093/jaoacint/qsab147] [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: 08/10/2021] [Revised: 10/14/2021] [Accepted: 11/06/2021] [Indexed: 11/14/2022]
Abstract
BACKGROUND Cow's milk allergy is one of the most reported food allergies in Europe. To help patients suffering from food allergies it is important to be able to detect milk in different foods. An analytical method that is gaining interest in the field of allergen detection is Ultra-High Performance Liquid Chromatography-tandem Mass Spectrometry, where the analyte is a target peptide. When these peptide biomarkers are selected the effect of food processing should be taken into account to allow a robust detection method. OBJECTIVE This works aims at identifying such processing stable peptide markers for milk for the Ultra-High Performance Liquid Chromatography-tandem Mass Spectrometry based detection of food allergens in different food products. METHODS Milk-incurred food materials that underwent several processing techniques were produced. This was followed by establishing tryptic peptide profiles from each matrix using Ultra-High Performance Liquid Chromatography-High Resolution Mass Spectrometry . RESULT A careful comparison of peptide profiles/intensities and the use of specific exclusion criteria resulted in the selection of 8 peptide biomarkers suitable for application in Ultra-High Performance Liquid Chromatography-tandem Mass Spectrometry based milk detection methods. One of these markers is a α-lactalbumin specific peptide, which has been determined to be stable in different incurred materials for the first time. CONCLUSION To our knowledge, this is the first systematic and experimentally based approach for the selection of suitable milk peptide biomarkers robust towards multiple, often applied food processing techniques for milk. Ensuring the exact knowledge of the food processing circumstances by starting from well-defined raw material and using fully controlled settings to produce incurred test material allowed the construction of a peptide database with robust markers. These robust markers can be used for the development of a robust detection method for milk in different food matrices.
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Affiliation(s)
- Kaatje Van Vlierberghe
- ILVO Flanders research institute for agriculture, fisheries and food, Technology and Food Science Unit, Brusselsesteenweg 370, BE-9090 Melle, Belgium; , , ,
| | - Maxime Gavage
- CER Groupe, Rue du Point du Jour 8, 6900, Marloie, Belgium; , .,Laboratory of Biochemistry and Cell Biology (URBC)-Namur Research Institute for Life Sciences (NARILIS), University of Namur, 61, rue de Bruxelles, 5000 Namur, Belgium , ,
| | - Marc Dieu
- Laboratory of Biochemistry and Cell Biology (URBC)-Namur Research Institute for Life Sciences (NARILIS), University of Namur, 61, rue de Bruxelles, 5000 Namur, Belgium , ,
| | - Patsy Renard
- Laboratory of Biochemistry and Cell Biology (URBC)-Namur Research Institute for Life Sciences (NARILIS), University of Namur, 61, rue de Bruxelles, 5000 Namur, Belgium , ,
| | - Thierry Arnould
- Laboratory of Biochemistry and Cell Biology (URBC)-Namur Research Institute for Life Sciences (NARILIS), University of Namur, 61, rue de Bruxelles, 5000 Namur, Belgium , ,
| | | | - Katleen Coudijzer
- ILVO Flanders research institute for agriculture, fisheries and food, Technology and Food Science Unit, Brusselsesteenweg 370, BE-9090 Melle, Belgium; , , ,
| | - Marc De Loose
- ILVO Flanders research institute for agriculture, fisheries and food, Technology and Food Science Unit, Brusselsesteenweg 370, BE-9090 Melle, Belgium; , , ,
| | - Kris Gevaert
- VIB-UGent Center for Medical Biotechnology, Technologiepark-Zwijnaarde 75, BE-9052 Ghent, Belgium; .,Department of Biomolecular Medicine, Ghent University, Technologiepark-Zwijnaarde 75, BE-9052 Ghent, Belgium
| | - Christof Van Poucke
- ILVO Flanders research institute for agriculture, fisheries and food, Technology and Food Science Unit, Brusselsesteenweg 370, BE-9090 Melle, Belgium; , , ,
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Xue S, Li X, Li S, Chen N, Zhan Q, Long L, Zhao J, Hou X, Yuan X. Bone fracture microenvironment responsive hydrogel for timing sequential release of cargoes. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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12
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Mahmoudinezhad M, Farhangi MA, Kahroba H, Dehghan P. Personalized diet study of dietary advanced glycation end products (AGEs) and fatty acid desaturase 2 (FADS 2) genotypes in obesity. Sci Rep 2021; 11:19725. [PMID: 34611217 PMCID: PMC8492634 DOI: 10.1038/s41598-021-99077-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 09/20/2021] [Indexed: 02/08/2023] Open
Abstract
Obesity prevalence have tripled in the past decades. It is logical to consider new approaches to halt its prevalence. In this concept, considering the effect of interaction between fatty acid desaturase 2 (FADS2) gene variants and dietary advanced glycation end products (AGEs) on obesity-related characteristics seems to be challenging. The present cross-sectional study conducted among 347 obese individuals. A validated semi-quantitative 147-item food frequency questionnaire (FFQ) was used to estimate dietary intakes and American multiethnic database was used to calculate AGEs content of food items which were not available in Iranian Food Composition Table (FCT). FADS2 gene variants were determined according to Polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Analysis of covariance (ANCOVA) was used to evaluate the modifier effect of FADS2 gene-dietary AGEs on biochemical values. Based on our findings, no significant differences was reported in term of biochemical variables between AGEs tertiles. In contrast, percent of macronutrients (carbohydrate, protein and fat) of total calorie intake, amount of daily intake of fiber and meat groups showed a significant differences among AGEs tertiles. Furthermore, statistical assays clarified the modifier effects of FADS2 gene-AGEs on weight (Pinteraction = 0.04), fat mass (Pinteraction = 0.03), waist circumference (Pinteraction = 0.008) and cholesterol (Pinteraction = 0.04) level. Accordingly, higher consumption of protein or fat based foods constitute high amount of AGEs and heterozygote genotype for FADS2 tended to show lower level of AGEs content. These findings address further investigation to develop new approaches for nutritional interventions.
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Affiliation(s)
- Mahsa Mahmoudinezhad
- grid.412888.f0000 0001 2174 8913Department of Community Nutrition, Faculty of Nutrition, Tabriz University of Medical Sciences, Attar-Neishabouri Ave, Golgasht St, 5165665931 Tabriz, Iran
| | - Mahdieh Abbasalizad Farhangi
- grid.412888.f0000 0001 2174 8913Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Houman Kahroba
- grid.412888.f0000 0001 2174 8913Molecular Medicine Research Center, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Parvin Dehghan
- grid.412888.f0000 0001 2174 8913Department of Biochemistry and Nutrition, Faculty of Nutrition, Tabriz University of Medical Sciences, Attar-Neishabouri Ave, Golgasht St, 5165665931 Tabriz, Iran
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13
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Ahmad SS, Younis K, Philippe J, Aschner M, Khan H. Strategic approaches to target the enzymes using natural compounds for the management of Alzheimer's disease: A review. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2021; 21:610-620. [PMID: 34382514 DOI: 10.2174/1871527320666210811160007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Revised: 06/21/2021] [Accepted: 07/18/2021] [Indexed: 11/22/2022]
Abstract
Alzheimer's disease (AD) is a chronic neurodegenerative disease. It is clinically characterized by memory loss and intellectual decrease, among other neurological deficits. The etiology of AD is not completely understood but includes amyloid plaques and intracellular helical filaments as well as neurofibrillary tangles with hyperphosphorylated tau protein. AD is also associated with alterations in amyloid processing genes, such as PSEN1 or PSEN2 and APP. The modulation immune system, cholesterol metabolism, and synaptic vesicle endocytosis have all been shown to remediate AD. In this review, enzymes such as AChE, BuChE, β-secretase, γ-secretase, MAO, and RAGE are discussed as potential targets for AD treatment. The aim of this review was to addresses the molecular mechanisms as well as various genetic factors in AD etiology. The use of natural compounds against these targets might be beneficial for the management of AD.
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Affiliation(s)
- Syed Sayeed Ahmad
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, 38541. Korea
| | - Kaiser Younis
- Department of Bioengineering, Faculty of Engineering, Integral University, Lucknow. India
| | - Jeandet Philippe
- Research Unit "Induced Resistance and Plant Bioprotection", EA 4707, SFR Condorcet FR CNRS 3417, Faculty of Sciences University of Reims Champagne-Ardenne, PO Box 1039, 51687 Reims Cedex 2. France
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461. United States
| | - Haroon Khan
- Department of Pharmacy, Abdul Wali Khan University Mardan 23200. Pakistan
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14
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Berger MT, Hemmler D, Walker A, Rychlik M, Marshall JW, Schmitt-Kopplin P. Molecular characterization of sequence-driven peptide glycation. Sci Rep 2021; 11:13294. [PMID: 34168180 PMCID: PMC8225897 DOI: 10.1038/s41598-021-92413-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 06/07/2021] [Indexed: 12/22/2022] Open
Abstract
Peptide glycation is an important, yet poorly understood reaction not only found in food but also in biological systems. The enormous heterogeneity of peptides and the complexity of glycation reactions impeded large-scale analysis of peptide derived glycation products and to understand both the contributing factors and how this affects the biological activity of peptides. Analyzing time-resolved Amadori product formation, we here explored site-specific glycation for 264 peptides. Intensity profiling together with in-depth computational sequence deconvolution resolved differences in peptide glycation based on microheterogeneity and revealed particularly reactive peptide collectives. These peptides feature potentially important sequence patterns that appear in several established bio- and sensory-active peptides from independent sources, which suggests that our approach serves system-wide applicability. We generated a pattern peptide map and propose that in peptide glycation the herein identified molecular checkpoints can be used as indication of sequence reactivity.
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Affiliation(s)
- Michelle T Berger
- Chair of Analytical Food Chemistry, Technical University Munich, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany. .,Research Unit Analytical BioGeoChemistry (BGC), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany.
| | - Daniel Hemmler
- Chair of Analytical Food Chemistry, Technical University Munich, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany.,Research Unit Analytical BioGeoChemistry (BGC), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Alesia Walker
- Research Unit Analytical BioGeoChemistry (BGC), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - Michael Rychlik
- Chair of Analytical Food Chemistry, Technical University Munich, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany
| | - James W Marshall
- The Waltham Pet Science Institute, Mars Petcare UK, Waltham-on-the-Wolds, Leicestershire, LE14 4RT, UK
| | - Philippe Schmitt-Kopplin
- Chair of Analytical Food Chemistry, Technical University Munich, Maximus-von-Imhof-Forum 2, 85354, Freising, Germany. .,Research Unit Analytical BioGeoChemistry (BGC), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany.
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15
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van der Lugt T, Opperhuizen A, Bast A, Vrolijk MF. Dietary Advanced Glycation Endproducts and the Gastrointestinal Tract. Nutrients 2020; 12:nu12092814. [PMID: 32937858 PMCID: PMC7551018 DOI: 10.3390/nu12092814] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/10/2020] [Accepted: 09/11/2020] [Indexed: 12/19/2022] Open
Abstract
The prevalence of inflammatory bowel diseases (IBD) is increasing in the world. The introduction of the Western diet has been suggested as a potential explanation of increased prevalence. The Western diet includes highly processed food products, and often include thermal treatment. During thermal treatment, the Maillard reaction can occur, leading to the formation of dietary advanced glycation endproducts (dAGEs). In this review, different biological effects of dAGEs are discussed, including their digestion, absorption, formation, and degradation in the gastrointestinal tract, with an emphasis on their pro-inflammatory effects. In addition, potential mechanisms in the inflammatory effects of dAGEs are discussed. This review also specifically elaborates on the involvement of the effects of dAGEs in IBD and focuses on evidence regarding the involvement of dAGEs in the symptoms of IBD. Finally, knowledge gaps that still need to be filled are identified.
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Affiliation(s)
- Timme van der Lugt
- Department of Pharmacology and Toxicology, Maastricht University, 6229 ER Maastricht, The Netherlands;
- Office for Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority (NVWA), 3540 AA Utrecht, The Netherlands
- Correspondence:
| | - Antoon Opperhuizen
- Department of Pharmacology and Toxicology, Maastricht University, 6229 ER Maastricht, The Netherlands;
- Office for Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority (NVWA), 3540 AA Utrecht, The Netherlands
| | - Aalt Bast
- Department of Pharmacology and Toxicology, Maastricht University, 6229 ER Maastricht, The Netherlands;
- Campus Venlo, Maastricht University, 5911 BV Venlo, The Netherlands; (A.B.); (M.F.V.)
| | - Misha F. Vrolijk
- Campus Venlo, Maastricht University, 5911 BV Venlo, The Netherlands; (A.B.); (M.F.V.)
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16
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van der Lugt T, Venema K, van Leeuwen S, Vrolijk MF, Opperhuizen A, Bast A. Gastrointestinal digestion of dietary advanced glycation endproducts using an in vitro model of the gastrointestinal tract (TIM-1). Food Funct 2020; 11:6297-6307. [PMID: 32602872 DOI: 10.1039/d0fo00450b] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Protein- and sugar-rich food products processed at high temperatures contain large amounts of dietary advanced glycation endproducts (dAGEs). Our earlier studies have shown that specifically protein-bound dAGEs induce a pro-inflammatory reaction in human macrophage-like cells. To what extent these protein-bound dAGEs survive the human gastrointestinal (GI) tract is still unclear. In this study we analysed gastric and small intestinal digestion of dAGEs using the validated, standardised TNO in vitro gastroIntestinal digestion model (TIM-1), a dynamic in vitro model which mimics the upper human GI tract. This model takes multiple parameters into account, such as: dynamic pH curves, peristaltic mixing, addition of bile and pancreatic digestive enzymes, and passive absorption. Samples of different digested food products were collected at different time points after (i) only gastric digestion and (ii) after both gastric plus small intestinal digestion. Samples were analysed for dAGEs using UPLC-MS/MS for the lysine derived Nε-carboxymethyllysine (CML) and Nε-carboxyethyllysine (CEL), and the arginine derived methylglyoxal-derived hydroimidazolone-1 (MG-H1), and glyoxal-derived hydroimidazolone-1 (G-H1). All AGEs were quantified in their protein-bound and free form. The results of this in vitro study show that protein-bound dAGEs survive gastrointestinal digestion and are additionally formed during small intestinal digestion. In ginger biscuits, the presence MG-H1 in the GI tract increased with more than 400%. This also indicates that dAGEs enter the human GI tract with potential pro-inflammatory characteristics.
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Affiliation(s)
- Timme van der Lugt
- Department of Pharmacology and Toxicology, Maastricht University, Maastricht, The Netherlands.
| | - Koen Venema
- Centre for Healthy Eating & Food Innovation (HEFI), Maastricht University - campus Venlo, Venlo, The Netherlands
| | - Stefan van Leeuwen
- Wageningen Food Safety Research, Wageningen University and Research, Wageningen, The Netherlands
| | | | - Antoon Opperhuizen
- Department of Pharmacology and Toxicology, Maastricht University, Maastricht, The Netherlands. and Office for Risk Assessment and Research, Netherlands Food and Consumer Product Safety Authority (NVWA), Utrecht, The Netherlands
| | - Aalt Bast
- Department of Pharmacology and Toxicology, Maastricht University, Maastricht, The Netherlands. and Campus Venlo, Maastricht University, Venlo, The Netherlands
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17
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Broersen K. Milk Processing Affects Structure, Bioavailability and Immunogenicity of β-lactoglobulin. Foods 2020; 9:foods9070874. [PMID: 32635246 PMCID: PMC7404694 DOI: 10.3390/foods9070874] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 06/24/2020] [Accepted: 06/26/2020] [Indexed: 12/15/2022] Open
Abstract
Bovine milk is subjected to various processing steps to warrant constant quality and consumer safety. One of these steps is pasteurization, which involves the exposure of liquid milk to a high temperature for a limited amount of time. While such heating effectively ameliorates consumer safety concerns mediated by pathogenic bacteria, these conditions also have an impact on one of the main nutritional whey constituents of milk, the protein β-lactoglobulin. As a function of heating, β-lactoglobulin was shown to become increasingly prone to denaturation, aggregation, and lactose conjugation. This review discusses the implications of such heat-induced modifications on digestion and adsorption in the gastro-intestinal tract, and the responses these conformations elicit from the gastro-intestinal immune system.
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Affiliation(s)
- Kerensa Broersen
- Department of Applied Stem Cell Technologies, TechMed Centre, University of Twente, Postbus 217, 7500 AE Enschede, The Netherlands
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18
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Abstract
Peptide libraries are a highly useful tool for drug development. While most preparations of peptide libraries are laborious during either the synthesis or its screening, the SPOT synthesis offers the possibility of directly synthesizing large numbers of peptides on a planar surface. As a positionally addressable, multiple solid-phase synthesis technique, the synthesis allows a very convenient handling during the screening of that peptide library in a form of an array. This publication will provide protocols for the basic procedures of the SPOT synthesis and references to some important literature regarding that technique and its application.
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19
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Schröter D, Höhn A. Role of Advanced Glycation End Products in Carcinogenesis and their Therapeutic Implications. Curr Pharm Des 2019; 24:5245-5251. [PMID: 30706806 PMCID: PMC6635609 DOI: 10.2174/1381612825666190130145549] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 01/24/2019] [Indexed: 01/09/2023]
Abstract
Aging is one of the biggest risk factors for the major prevalent diseases such as cardiovascular diseases, neurodegeneration and cancer, but due to the complex and multifactorial nature of the aging process, the molecular mechanisms underlying age-related diseases are not yet fully understood. Research has been intensive in the last years aiming to characterize the pathophysiology of aging and develop therapies to fight age-related diseases. In this context advanced glycation end products (AGEs) have received attention. AGEs, when accumulated in tissues, significantly increase the level of inflammation in the body which has long been associated with the development of cancer. Here we discuss the classical settings promoting AGE formation, as well as reduction strategies, occurrence and relevance of AGEs in cancer tissues and the role of AGE-interaction with the receptor for advanced glycation end products (RAGE) in cancer initiation and progression.
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Affiliation(s)
- David Schröter
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany.,Leibniz Institute of Vegetable and Ornamental Crops Grossbeeren e.V. (IGZ), 14979 Grossbeeren.,Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, 20146 Hamburg, Germany
| | - Annika Höhn
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany.,German Center for Diabetes Research (DZD), 85764 Muenchen-Neuherberg, German
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20
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Gill V, Kumar V, Singh K, Kumar A, Kim JJ. Advanced Glycation End Products (AGEs) May Be a Striking Link Between Modern Diet and Health. Biomolecules 2019; 9:biom9120888. [PMID: 31861217 PMCID: PMC6995512 DOI: 10.3390/biom9120888] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/30/2019] [Accepted: 12/02/2019] [Indexed: 12/12/2022] Open
Abstract
The Maillard reaction is a simple but ubiquitous reaction that occurs both in vivo and ex vivo during the cooking or processing of foods under high-temperature conditions, such as baking, frying, or grilling. Glycation of proteins is a post-translational modification that forms temporary adducts, which, on further crosslinking and rearrangement, form permanent residues known as advanced glycation end products (AGEs). Cooking at high temperature results in various food products having high levels of AGEs. This review underlines the basis of AGE formation and their corresponding deleterious effects on the body. Glycated Maillard products have a direct association with the pathophysiology of some metabolic diseases, such as diabetes mellitus type 2 (DM2), acute renal failure (ARF), Alzheimer’s disease, dental health, allergies, and polycystic ovary syndrome (PCOS). The most glycated and structurally abundant protein is collagen, which acts as a marker for diabetes and aging, where decreased levels indicate reduced skin elasticity. In diabetes, high levels of AGEs are associated with carotid thickening, ischemic heart disease, uremic cardiomyopathy, and kidney failure. AGEs also mimic hormones or regulate/modify their receptor mechanisms at the DNA level. In women, a high AGE diet directly correlates with high levels of androgens, anti-Müllerian hormone, insulin, and androstenedione, promoting ovarian dysfunction and/or infertility. Vitamin D3 is well-associated with the pathogenesis of PCOS and modulates steroidogenesis. It also exhibits a protective mechanism against the harmful effects of AGEs. This review elucidates and summarizes the processing of infant formula milk and the associated health hazards. Formulated according to the nutritional requirements of the newborn as a substitute for mother’s milk, formula milk is a rich source of primary adducts, such as carboxy-methyl lysine, which render an infant prone to inflammation, dementia, food allergies, and other diseases. We therefore recommend that understanding this post-translational modification is the key to unlocking the mechanisms and physiology of various metabolic syndromes.
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Affiliation(s)
- Vidhu Gill
- Central Research Station, Subharti Medical College, Swami Vivekanand Subharti University, Meerut 250002, India; (V.G.); (K.S.)
| | - Vijay Kumar
- Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea
- Correspondence: (V.K.); (J.-J.K.); Tel.: +82-53-810-3027 or +82-10-9668-3464 (J.-J.K.); Fax: +82-53-801-3027 (J.-J.K.)
| | - Kritanjali Singh
- Central Research Station, Subharti Medical College, Swami Vivekanand Subharti University, Meerut 250002, India; (V.G.); (K.S.)
| | - Ashok Kumar
- Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow 226014, India;
| | - Jong-Joo Kim
- Department of Biotechnology, Yeungnam University, Gyeongsan, Gyeongbuk 38541, Korea
- Correspondence: (V.K.); (J.-J.K.); Tel.: +82-53-810-3027 or +82-10-9668-3464 (J.-J.K.); Fax: +82-53-801-3027 (J.-J.K.)
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21
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Abstract
Industrial heat treatment of milk results in protein glycation. A high protein glycation level has been suggested to compromise the post-prandial rise in plasma amino acid availability following protein ingestion. In the present study, we assessed the impact of glycation level of milk protein on post-prandial plasma amino acid responses in humans. Fifteen healthy, young men (age 26 (SEM 1) years, BMI 24 (SEM 1) kg/m2) participated in this randomised cross-over study and ingested milk protein powder with protein glycation levels of 3, 20 and 50 % blocked lysine. On each trial day, arterialised blood samples were collected at regular intervals during a 6-h post-prandial period to assess plasma amino acid concentrations using ultra-performance liquid chromatography. Plasma essential amino acid (EAA) concentrations increased following milk protein ingestion, with the 20 and 50 % glycated milk proteins showing lower overall EAA responses compared with the 3 % glycated milk protein (161 (SEM 7) and 142 (SEM 7) v. 178 (SEM 9) mmol/l × 6 h, respectively; P ≤ 0·011). The lower post-prandial plasma amino acid responses were fully attributed to an attenuated post-prandial rise in circulating plasma lysine concentrations. Plasma lysine responses (incremental AUC) following ingestion of the 20 and 50 % glycated milk proteins were 35 (SEM 4) and 92 (SEM 2) % lower compared with the 3 % glycated milk protein (21·3 (SEM 1·4) and 2·8 (SEM 0·7) v. 33·3 (SEM 1·7) mmol/l × 6 h, respectively; P < 0·001). Milk protein glycation lowers post-prandial plasma lysine availability in humans. The lower post-prandial availability of lysine following ingestion of proteins with a high glycation level may compromise the anabolic properties of a protein source.
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22
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Ye Z, Mittag S, Schmidt M, Simm A, Horstkorte R, Huber O. Wnt Glycation Inhibits Canonical Signaling. Cells 2019; 8:cells8111320. [PMID: 31731544 PMCID: PMC6912562 DOI: 10.3390/cells8111320] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 10/22/2019] [Accepted: 10/22/2019] [Indexed: 02/07/2023] Open
Abstract
Glycation occurs as a non-enzymatic reaction between amino and thiol groups of proteins, lipids, and nucleotides with reducing sugars or α-dicarbonyl metabolites. The chemical reaction underlying is the Maillard reaction leading to the formation of a heterogeneous group of compounds named advanced glycation end products (AGEs). Deleterious effects have been observed to accompany glycation such as alterations of protein structure and function resulting in crosslinking and accumulation of insoluble protein aggregates. A substantial body of evidence associates glycation with aging. Wnt signaling plays a fundamental role in stem cell biology as well as in regeneration and repair mechanisms. Emerging evidence implicates that changes in Wnt/β-catenin pathway activity contribute to the aging process. Here, we investigated the effect of glycation of Wnt3a on its signaling activity. Methods: Glycation was induced by treatment of Wnt3a-conditioned medium (CM) with glyoxal (GO). Effects on Wnt3a signaling activity were analyzed by Topflash/Fopflash reporter gene assay, co-immunoprecipitation, and quantitative RT-PCR. Results: Our data show that GO-treatment results in glycation of Wnt3a. Glycated Wnt3a suppresses β-catenin transcriptional activity in reporter gene assays, reduced binding of β-catenin to T-cell factor 4 (TCF-4) and extenuated transcription of Wnt/β-catenin target genes. Conclusions: GO-induced glycation impairs Wnt3a signaling function.
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Affiliation(s)
- Zhennan Ye
- Department of Biochemistry II, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany; (Z.Y.); (S.M.); (M.S.)
| | - Sonnhild Mittag
- Department of Biochemistry II, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany; (Z.Y.); (S.M.); (M.S.)
| | - Martin Schmidt
- Department of Biochemistry II, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany; (Z.Y.); (S.M.); (M.S.)
| | - Andreas Simm
- Department of Cardiac Surgery, Middle German Heart Center, University Hospital Halle, Martin Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany;
| | - Rüdiger Horstkorte
- Institute for Physiological Chemistry, Martin Luther University Halle-Wittenberg, 06114 Halle/Saale, Germany;
| | - Otmar Huber
- Department of Biochemistry II, Jena University Hospital, Friedrich Schiller University Jena, 07743 Jena, Germany; (Z.Y.); (S.M.); (M.S.)
- Correspondence: ; Tel.: +49-3641-9396400
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23
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The Modern Western Diet Rich in Advanced Glycation End-Products (AGEs): An Overview of Its Impact on Obesity and Early Progression of Renal Pathology. Nutrients 2019; 11:nu11081748. [PMID: 31366015 PMCID: PMC6724323 DOI: 10.3390/nu11081748] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 07/15/2019] [Accepted: 07/25/2019] [Indexed: 01/12/2023] Open
Abstract
Advanced glycation end-products (AGEs) are an assorted group of molecules formed through covalent bonds between a reduced sugar and a free amino group of proteins, lipids, and nucleic acids. Glycation alters their structure and function, leading to impaired cell function. They can be originated by physiological processes, when not counterbalanced by detoxification mechanisms, or derive from exogenous sources such as food, cigarette smoke, and air pollution. Their accumulation increases inflammation and oxidative stress through the activation of various mechanisms mainly triggered by binding to their receptors (RAGE). So far, the pathogenic role of AGEs has been evidenced in inflammatory and chronic diseases such as chronic kidney disease, cardiovascular disease, and diabetic nephropathy. This review focuses on the AGE-induced kidney damage, by describing the molecular players involved and investigating its link to the excess of body weight and visceral fat, hallmarks of obesity. Research regarding interventions to reduce AGE accumulation has been of great interest and a nutraceutical approach that would help fighting chronic diseases could be a very useful tool for patients’ everyday lives.
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24
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Zhou Y, Li L, Li S, Li S, Zhao M, Zhou Q, Gong X, Yang J, Chang J. Autoregenerative redox nanoparticles as an antioxidant and glycation inhibitor for palliation of diabetic cataracts. NANOSCALE 2019; 11:13126-13138. [PMID: 31268450 DOI: 10.1039/c9nr02350j] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Diabetic cataracts (DCs) are one of the most common ocular complications of diabetes, and easily causes blindness among diabetics. However, there are limited drugs to delay and prevent DCs. Research studies indicate that oxidative damage of the crystalline lens and nonenzymatic glycosylation of the lens protein play a key role in the pathogenesis of DCs. Hence, we developed a kind of autoregenerative redox nanoparticle, which was CeO2 NPs coated with PEG-PLGA (PCNPs). We first found that PCNPs could work not only as an antioxidant to protect lens epithelial cells from oxidative stress based on the repetitive elimination of reactive oxygen species (ROS), but also as a glycation inhibitor effectively restraining α-crystallin glycation and crosslinking, thereby keeping the lens transparent and alleviating DCs. Experimental results successfully validated the fact that the PCNPs were able to operate in eyes for a long time to attenuate lens opacity. We expect that this strategy will provide promising potential for the treatment of DCs.
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Affiliation(s)
- Yurui Zhou
- School of Life Sciences, Tianjin University, Tianjin Engineering Research Center for Micro-Nano Biomaterials and Detection-Treatment Technology, Tianjin 300072, China.
| | - Lu Li
- School of Life Sciences, Tianjin University, Tianjin Engineering Research Center for Micro-Nano Biomaterials and Detection-Treatment Technology, Tianjin 300072, China.
| | - Shenghui Li
- Key Laboratory of Post-Neurotrauma Neurorepair and Regeneration in Central Nervous System Ministry of Education in China and Tianjin, Tianjin Neurological Institute, Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, 300052, China
| | - Shufei Li
- Department of Toxicology, Tianjin Center for Disease Control and Prevention, Tianjin 300011, China
| | - Miao Zhao
- Department of Toxicology, Tianjin Center for Disease Control and Prevention, Tianjin 300011, China
| | - Qinghong Zhou
- Department of Toxicology, Tianjin Center for Disease Control and Prevention, Tianjin 300011, China
| | - Xiaoqun Gong
- School of Life Sciences, Tianjin University, Tianjin Engineering Research Center for Micro-Nano Biomaterials and Detection-Treatment Technology, Tianjin 300072, China.
| | - Jin Yang
- Department of Ophthalmology, Eye and ENT Hospital, Fudan University Myopia Key Laboratory of Health PR China, Shanghai, 200031, China.
| | - Jin Chang
- School of Life Sciences, Tianjin University, Tianjin Engineering Research Center for Micro-Nano Biomaterials and Detection-Treatment Technology, Tianjin 300072, China.
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25
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Sharman MJ, Verdile G, Kirubakaran S, Parenti C, Singh A, Watt G, Karl T, Chang D, Li CG, Münch G. Targeting Inflammatory Pathways in Alzheimer's Disease: A Focus on Natural Products and Phytomedicines. CNS Drugs 2019; 33:457-480. [PMID: 30900203 DOI: 10.1007/s40263-019-00619-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Studies of the brains of Alzheimer's disease (AD) patients have revealed key neuropathological features, such as the deposition of aggregates of insoluble amyloid-β (Aβ) peptides and neurofibrillary tangles (NFTs). These pathological protein deposits, including Aβ peptides (which form senile plaques) and hyperphosphorylated tau (which aggregates into NFTs), have been assumed to be 'the cause of AD'. Aβ has been extensively targeted to develop an effective disease-modifying therapy, but with limited clinical success. Emerging therapies are also now targeting further pathological processes in AD, including neuroinflammation. This review focuses on the inflammatory and oxidative stress-related changes that occur in AD, and discusses some emerging anti-inflammatory natural products and phytomedicines. Many of the promising compounds are cytokine-suppressive anti-inflammatory drugs (CSAIDs), which target the proinflammatory AP1 and nuclear factor-κB signalling pathways and inhibit the expression of many proinflammatory cytokines, such as interleukin (IL)-1, IL-6, tumour necrosis factor-α, or nitric oxide produced by inducible nitric oxide synthase. However, many of these phytomedicines have not been tested in rigorous clinical trials in AD patients. It is not yet clear if the active compounds reach an effective concentration in the brain (due to limited bioavailability) or if they can slow down AD progression in long-term trials. The authors suggest that it is crucial for both the pharmacological and complementary medicine industries to conduct and fund those studies to significantly advance the field.
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Affiliation(s)
- Matthew J Sharman
- School of Health Sciences, College of Health and Medicine, University of Tasmania, Locked Bag 1322, Launceston, TAS, 7250, Australia
| | - Giuseppe Verdile
- School of Pharmacy and Biomedical Sciences, Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, 6102, Australia
| | - Shanmugam Kirubakaran
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Cristina Parenti
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Ahilya Singh
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Georgina Watt
- Department of Behavioural Neuroscience, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Tim Karl
- Department of Behavioural Neuroscience, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Dennis Chang
- NICM Health Research Institute, Western Sydney University, Campbelltown, NSW, 2560, Australia.,School of Science and Health, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Chun Guang Li
- NICM Health Research Institute, Western Sydney University, Campbelltown, NSW, 2560, Australia
| | - Gerald Münch
- Department of Pharmacology, School of Medicine, Western Sydney University, Campbelltown, NSW, 2560, Australia. .,NICM Health Research Institute, Western Sydney University, Campbelltown, NSW, 2560, Australia. .,Pharmacology Unit, School of Medicine, Western Sydney University, Locked Bag 1797, Penrith, NSW, 2751, Australia.
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26
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Deng Y, Butré CI, Wierenga PA. Understanding glycation kinetics of individual peptides in protein hydrolysates. Int Dairy J 2019. [DOI: 10.1016/j.idairyj.2018.10.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Kundu BK, Singh R, Tiwari R, Nayak D, Mukhopadhyay S. An amide probe as a selective Al3+ and Fe3+ sensor inside the HeLa and a549 cell lines: Pictet–Spengler reaction for the rapid detection of tryptophan amino acid. NEW J CHEM 2019. [DOI: 10.1039/c9nj00138g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Newly synthesized amide-based probe for the selective and specific detection of (i) Al3+ or Fe3+ ions as a cation sensor and (ii) tryptophan as an amino acid sensor.
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Affiliation(s)
- Bidyut Kumar Kundu
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Rinky Singh
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Ritudhwaj Tiwari
- Discipline of Biosciences and Biomedical Engineering
- School of Engineering
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Debasis Nayak
- Discipline of Biosciences and Biomedical Engineering
- School of Engineering
- Indian Institute of Technology Indore
- Indore 453552
- India
| | - Suman Mukhopadhyay
- Discipline of Chemistry
- School of Basic Sciences
- Indian Institute of Technology Indore
- Indore 453552
- India
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28
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Hemmler D, Roullier-Gall C, Marshall JW, Rychlik M, Taylor AJ, Schmitt-Kopplin P. Insights into the Chemistry of Non-Enzymatic Browning Reactions in Different Ribose-Amino Acid Model Systems. Sci Rep 2018; 8:16879. [PMID: 30442967 PMCID: PMC6237888 DOI: 10.1038/s41598-018-34335-5] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 09/12/2018] [Indexed: 01/01/2023] Open
Abstract
Reactions between sugars and amino acids in the Maillard reaction produce a multitude of compounds through interconnected chemical pathways. The course of the pathways changes depending on the nature of the amino acids and sugars as well as the processing conditions (e.g. temperature, water activity). Some partial pathways have been elucidated using labelled precursors but the process is very time intensive. Here, we use rapid, non-targeted analysis with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) to deliver the molecular formulae and ion intensities of the compounds generated from reaction of four amino acids with ribose (10 h at 100 °C) to study the effect of amino acid side chains on the reaction pathways. Using van Krevelen diagrams, known chemical changes during the reaction (e.g. dehydration or decarboxylation) can be studied. Comparison of the data from the four amino acids studied, showed a common pathway, which involved 73 Maillard reaction products (MRPs) where the differences were due only to the nature of the amino acid side chain. From the more than 1400 different molecular formulae found, pathways unique to the amino acids were also identified and the order of reactivity was lysine >cysteine >isoleucine ≈ glycine. While unequivocal identification of the compounds cannot be achieved with FT-ICR-MS, applying known chemical transformations found in the Maillard reaction, not only identifies new and known pathways, but also integrates the MRPs into a general Maillard reaction scheme that better represents the totality of the Maillard reaction.
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Affiliation(s)
- Daniel Hemmler
- Comprehensive Foodomics Platform, Analytical Food Chemistry, Technical University Munich, Alte Akademie 10, 85354, Freising, Germany. .,Research Unit Analytical BioGeoChemistry (BGC), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany.
| | - Chloé Roullier-Gall
- Comprehensive Foodomics Platform, Analytical Food Chemistry, Technical University Munich, Alte Akademie 10, 85354, Freising, Germany.,Research Unit Analytical BioGeoChemistry (BGC), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany
| | - James W Marshall
- The Waltham Centre for Pet Nutrition, Mars Petcare UK, Waltham-on-the-Wolds, Leicestershire, LE14 4RT, United Kingdom
| | - Michael Rychlik
- Comprehensive Foodomics Platform, Analytical Food Chemistry, Technical University Munich, Alte Akademie 10, 85354, Freising, Germany
| | - Andrew J Taylor
- The Waltham Centre for Pet Nutrition, Mars Petcare UK, Waltham-on-the-Wolds, Leicestershire, LE14 4RT, United Kingdom
| | - Philippe Schmitt-Kopplin
- Comprehensive Foodomics Platform, Analytical Food Chemistry, Technical University Munich, Alte Akademie 10, 85354, Freising, Germany. .,Research Unit Analytical BioGeoChemistry (BGC), Helmholtz Zentrum München, Ingolstädter Landstrasse 1, 85764, Neuherberg, Germany.
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29
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Nowotny K, Schröter D, Schreiner M, Grune T. Dietary advanced glycation end products and their relevance for human health. Ageing Res Rev 2018; 47:55-66. [PMID: 29969676 DOI: 10.1016/j.arr.2018.06.005] [Citation(s) in RCA: 142] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 12/23/2022]
Abstract
Due to their bioactivity and harmful potential, advanced glycation end products (AGEs) are discussed to affect human health. AGEs are compounds formed endogenously in the human body andexogenously, especially, in foods while thermal processing. In contrast to endogenous AGEs, dietary AGEs are formed in much higher extent. However, their risk potential is also depending on absorption, distribution, metabolism and elimination. For over 10 years an intense debate on the risk of dietary AGEs on human health is going on. On the one hand, studies provided evidence that dietary AGEs contribute to clinical outcomes. On the other hand, human studies failed to observe any association. Because it was not possible to draw a final conclusion, the call for new interdisciplinary approaches arose. In this review, we will give an overview on the current state of scientific knowledge in this field. In particular, we focus on (I) the occurrence of AGEs in foods and the daily uptake of AGEs, (II) contribution to endogenous levels and (III) the effect on health-/disease-related biomarkers in humans.
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Affiliation(s)
- Kerstin Nowotny
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany
| | - David Schröter
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany; Leibniz Institute of Vegetable and Ornamental Crops Grossbeeren e.V. (IGZ), 14979 Grossbeeren, Germany; Institute of Food Chemistry, Hamburg School of Food Science, University of Hamburg, 20146 Hamburg, Germany
| | - Monika Schreiner
- Leibniz Institute of Vegetable and Ornamental Crops Grossbeeren e.V. (IGZ), 14979 Grossbeeren, Germany; NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam, 14458 Nuthetal, Germany
| | - Tilman Grune
- Department of Molecular Toxicology, German Institute of Human Nutrition Potsdam-Rehbruecke (DIfE), 14558 Nuthetal, Germany; Institute of Nutrition, University of Potsdam, 14558 Nuthetal, Germany; German Center for Diabetes Research (DZD), 85764 München-Neuherberg, Germany; German Center for Cardiovascular Research (DZHK), 10117 Berlin, Germany; NutriAct-Competence Cluster Nutrition Research Berlin-Potsdam, 14458 Nuthetal, Germany.
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30
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Cardoso HB, Wierenga PA, Gruppen H, Schols HA. Maillard induced aggregation of individual milk proteins and interactions involved. Food Chem 2018; 276:652-661. [PMID: 30409645 DOI: 10.1016/j.foodchem.2018.10.061] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 10/08/2018] [Accepted: 10/11/2018] [Indexed: 12/27/2022]
Abstract
The aggregation of α-lactalbumin, β-lactoglobulin and β-casein after heating in dry state was studied in absence and presence of saccharides. In absence of saccharides, differences were observed in the extent of aggregation. Differences between the proteins were mostly due to differences in covalent aggregation. The presence of glucose during the heat treatment of milk proteins significantly increased the extent of aggregation, and decreased differences between proteins. α-Lactalbumin was selected as a model protein for the study of cross-links formed after heat treatment. In the presence of saccharides, these cross-links were found to consist of 36% of disulphide bridges (compared to >75% in the absence of glucose), followed by other cross-links such as lanthionine. Larger saccharides led to a decrease in Maillard induced aggregation; maltotriose actually even inhibited the formation of α-lactalbumin aggregates.
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Affiliation(s)
- Hugo B Cardoso
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
| | - Peter A Wierenga
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
| | - Harry Gruppen
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
| | - Henk A Schols
- Laboratory of Food Chemistry, Wageningen University, Bornse Weilanden 9, 6708 WG Wageningen, The Netherlands.
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31
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Cardoso HB, Wierenga PA, Gruppen H, Schols HA. Maillard induced glycation behaviour of individual milk proteins. Food Chem 2018; 252:311-317. [DOI: 10.1016/j.foodchem.2018.01.106] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/11/2018] [Accepted: 01/15/2018] [Indexed: 11/27/2022]
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32
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Dhananjayan K, Gunawardena D, Hearn N, Sonntag T, Moran C, Gyengesi E, Srikanth V, Münch G. Activation of Macrophages and Microglia by Interferon-γ and Lipopolysaccharide Increases Methylglyoxal Production: A New Mechanism in the Development of Vascular Complications and Cognitive Decline in Type 2 Diabetes Mellitus? J Alzheimers Dis 2018; 59:467-479. [PMID: 28582854 DOI: 10.3233/jad-161152] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Methylglyoxal (MGO), a dicarbonyl compound derived from glucose, is elevated in diabetes mellitus and contributes to vascular complications by crosslinking collagen and increasing arterial stiffness. It is known that MGO contributes to inflammation as it forms advanced glycation end products (AGEs), which activate macrophages via the receptor RAGE. The aim of study was to investigate whether inflammatory activation can increase MGO levels, thereby completing a vicious cycle. In order to validate this, macrophage (RAW264.7, J774A.1) and microglial (N11) cells were stimulated with IFN-γ and LPS (5 + 5 and 10 + 10 IFN-γ U/ml or μg/ml LPS), and extracellular MGO concentration was determined after derivatization with 5,6-Diamino-2,4-dihydroxypyrimidine sulfate by HPLC. MGO levels in activated macrophage cells (RAW264.7) peaked at 48 h, increasing 2.86-fold (3.14±0.4 μM) at 5 U/ml IFN-γ+5 μg/ml LPS, and 4.74-fold (5.46±0.30 μM) at 10 U/ml IFN-γ+10 μg/ml LPS compared to the non-activated controls (1.15±0.02 μM). The other two cell lines, J774A.1 macrophages and N11 microglia, showed a similar response. We suggest that inflammation increases MGO production, possibly exacerbating arterial stiffness, cardiovascular complications, and diabetes-related cognitive decline.
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Affiliation(s)
- Karthik Dhananjayan
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia
| | - Dhanushka Gunawardena
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia
| | - Nerissa Hearn
- Molecular Medicine Research Group, Western Sydney University, Penrith, NSW, Australia
| | - Tanja Sonntag
- Molecular Medicine Research Group, Western Sydney University, Penrith, NSW, Australia
| | - Chris Moran
- Department of Medicine, Peninsula Health & Peninsula Clinical School, Monash University, VIC, Australia
| | - Erika Gyengesi
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia
| | - Velandai Srikanth
- Department of Medicine, Peninsula Health & Peninsula Clinical School, Monash University, VIC, Australia
| | - Gerald Münch
- Department of Pharmacology, School of Medicine, Western Sydney University, Penrith, NSW, Australia.,Molecular Medicine Research Group, Western Sydney University, Penrith, NSW, Australia.,National Institute of Complementary Medicine, Western Sydney University, Penrith, NSW, Australia
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33
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Fernandez-Gomez B, Nitride C, Ullate M, Mamone G, Ferranti P, del Castillo MD. Inhibitors of advanced glycation end products from coffee bean roasting by-product. Eur Food Res Technol 2018. [DOI: 10.1007/s00217-017-3023-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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34
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Investigation Into the Effects of Tenilsetam on Markers of Neuroinflammation in GFAP-IL6 Mice. Pharm Res 2018; 35:22. [DOI: 10.1007/s11095-017-2326-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 12/04/2017] [Indexed: 01/01/2023]
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35
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Mu X, Yan C, Tian Q, Lin J, Yang S. BSA-assisted synthesis of ultrasmall gallic acid-Fe(III) coordination polymer nanoparticles for cancer theranostics. Int J Nanomedicine 2017; 12:7207-7223. [PMID: 29042770 PMCID: PMC5633299 DOI: 10.2147/ijn.s146064] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Protein-related nanotheranostic agents hold great promise as tools to serve many clinical applications. Proteins such as BSA are used to regulate the synthesis of nondegradable inorganic nanoparticles (NPs). To fully employ the potential of such proteins, a new type of biosafe nanotheranostic agent must be designed to optimize BSA as a biomineralization agent. Here, a straightforward BSA-assisted biomineralization method was developed to prepare gallic acid (GA)-Fe(III) coordination polymer NPs. BSA-coated GA-Fe (GA-Fe@BSA) NPs were ultrasmall (3.5 nm) and showed good biocompatibility, a lower r2:r1 ratio (1.06), and strong absorption in the visible near-infrared region. T1-weighted magnetic resonance imaging of tumor-bearing mice before and after intratumoral injection with GA-Fe@BSA NPs definitively demonstrated positive change. In a subsequent in vivo study, antitumor activity was precipitated by intratumoral injection of GA-Fe@BSA NPs combined with laser treatment, suggesting excellent outcomes with this treatment method. These results describe a successful protocol in which BSA regulated the synthesis of benign organic polymer NPs. GA-Fe@BSA NPs have the potential to be ideal agents to be used in clinical theranostic nanoplatforms.
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Affiliation(s)
- Xueling Mu
- Key Laboratory of Resource Chemistry
- Key Laboratory of Rare Earth Functional Materials
- Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University, Shanghai, China
| | - Chenglin Yan
- Key Laboratory of Resource Chemistry
- Key Laboratory of Rare Earth Functional Materials
- Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University, Shanghai, China
| | - Qiwei Tian
- Key Laboratory of Resource Chemistry
- Key Laboratory of Rare Earth Functional Materials
- Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University, Shanghai, China
| | - Jiaomin Lin
- Key Laboratory of Resource Chemistry
- Key Laboratory of Rare Earth Functional Materials
- Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University, Shanghai, China
| | - Shiping Yang
- Key Laboratory of Resource Chemistry
- Key Laboratory of Rare Earth Functional Materials
- Key Laboratory of Molecular Imaging Probes and Sensors, Shanghai Normal University, Shanghai, China
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36
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Islam S, Moinuddin, Mir AR, Raghav A, Habib S, Alam K, Ali A. Glycation, oxidation and glycoxidation of IgG: a biophysical, biochemical, immunological and hematological study. J Biomol Struct Dyn 2017; 36:2637-2653. [DOI: 10.1080/07391102.2017.1365770] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Sidra Islam
- Department of Biochemistry, Jawarharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Moinuddin
- Department of Biochemistry, Jawarharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Abdul Rouf Mir
- Department of Biochemistry, Jawarharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
- Department of Biotechnology, Government Degree College, University of Kashmir, Baramulla 193101, Jammu and Kashmir, India
| | - Alok Raghav
- Rajiv Gandhi Centre for Diabetes and Endocrinology, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Safia Habib
- Department of Biochemistry, Jawarharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Khursheed Alam
- Department of Biochemistry, Jawarharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
| | - Asif Ali
- Department of Biochemistry, Jawarharlal Nehru Medical College, Faculty of Medicine, Aligarh Muslim University, Aligarh 202002, Uttar Pradesh, India
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37
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Raghav A, Ahmad J, Alam K, Khan AU. New insights into non-enzymatic glycation of human serum albumin biopolymer: A study to unveil its impaired structure and function. Int J Biol Macromol 2017; 101:84-99. [DOI: 10.1016/j.ijbiomac.2017.03.086] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Revised: 03/13/2017] [Accepted: 03/15/2017] [Indexed: 12/31/2022]
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38
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Toxicity of Protein and DNA-AGEs in Neurodegenerative Diseases (NDDs) with Decisive Approaches to Stop the Deadly Consequences. PERSPECTIVES IN ENVIRONMENTAL TOXICOLOGY 2017. [DOI: 10.1007/978-3-319-46248-6_5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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Adav SS, Sze SK. Insight of brain degenerative protein modifications in the pathology of neurodegeneration and dementia by proteomic profiling. Mol Brain 2016; 9:92. [PMID: 27809929 PMCID: PMC5094070 DOI: 10.1186/s13041-016-0272-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/16/2016] [Indexed: 02/06/2023] Open
Abstract
Dementia is a syndrome associated with a wide range of clinical features including progressive cognitive decline and patient inability to self-care. Due to rapidly increasing prevalence in aging society, dementia now confers a major economic, social, and healthcare burden throughout the world, and has therefore been identified as a public health priority by the World Health Organization. Previous studies have established dementia as a 'proteinopathy' caused by detrimental changes in brain protein structure and function that promote misfolding, aggregation, and deposition as insoluble amyloid plaques. Despite clear evidence that pathological cognitive decline is associated with degenerative protein modifications (DPMs) arising from spontaneous chemical modifications to amino acid side chains, the molecular mechanisms that promote brain DPMs formation remain poorly understood. However, the technical challenges associated with DPM analysis have recently become tractable due to powerful new proteomic techniques that facilitate detailed analysis of brain tissue damage over time. Recent studies have identified that neurodegenerative diseases are associated with the dysregulation of critical repair enzymes, as well as the misfolding, aggregation and accumulation of modified brain proteins. Future studies will further elucidate the mechanisms underlying dementia pathogenesis via the quantitative profiling of the human brain proteome and associated DPMs in distinct phases and subtypes of disease. This review summarizes recent developments in quantitative proteomic technologies, describes how these techniques have been applied to the study of dementia-linked changes in brain protein structure and function, and briefly outlines how these findings might be translated into novel clinical applications for dementia patients. In this review, only spontaneous protein modifications such as deamidation, oxidation, nitration glycation and carbamylation are reviewed and discussed.
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Affiliation(s)
- Sunil S. Adav
- Division of Structural Biology and Biochemistry, School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551 Singapore
| | - Siu Kwan Sze
- Division of Structural Biology and Biochemistry, School of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore, 637551 Singapore
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40
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Hussain M, Bork K, Gnanapragassam VS, Bennmann D, Jacobs K, Navarette-Santos A, Hofmann B, Simm A, Danker K, Horstkorte R. Novel insights in the dysfunction of human blood-brain barrier after glycation. Mech Ageing Dev 2016; 155:48-54. [DOI: 10.1016/j.mad.2016.03.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Revised: 03/08/2016] [Accepted: 03/09/2016] [Indexed: 11/15/2022]
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41
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Rocha-Ferreira E, Hristova M. Antimicrobial peptides and complement in neonatal hypoxia-ischemia induced brain damage. Front Immunol 2015; 6:56. [PMID: 25729383 PMCID: PMC4325932 DOI: 10.3389/fimmu.2015.00056] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 01/29/2015] [Indexed: 12/22/2022] Open
Abstract
Hypoxic-ischemic encephalopathy (HIE) is a clinical condition in the neonate, resulting from oxygen deprivation around the time of birth. HIE affects 1-5/1000 live births worldwide and is associated with the development of neurological deficits, including cerebral palsy, epilepsy, and cognitive disabilities. Even though the brain is considered as an immune-privileged site, it has innate and adaptive immune response and can produce complement (C) components and antimicrobial peptides (AMPs). Dysregulation of cerebral expression of AMPs and C can exacerbate or ameliorate the inflammatory response within the brain. Brain ischemia triggers a prolonged inflammatory response affecting the progression of injury and secondary energy failure and involves both innate and adaptive immune systems, including immune-competent and non-competent cells. Following injury to the central nervous system (CNS), including neonatal hypoxia-ischemia (HI), resident microglia, and astroglia are the main cells providing immune defense to the brain in a stimulus-dependent manner. They can express and secrete pro-inflammatory cytokines and therefore trigger prolonged inflammation, resulting in neurodegeneration. Microglial cells express and release a wide range of inflammation-associated molecules including several components of the complement system. Complement activation following neonatal HI injury has been reported to contribute to neurodegeneration. Astrocytes can significantly affect the immune response of the CNS under pathological conditions through production and release of pro-inflammatory cytokines and immunomodulatory AMPs. Astrocytes express β-defensins, which can chemoattract and promote maturation of dendritic cells (DC), and can also limit inflammation by controlling the viability of these same DC. This review will focus on the balance of complement components and AMPs within the CNS following neonatal HI injury and the effect of that balance on the subsequent brain damage.
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Affiliation(s)
- Eridan Rocha-Ferreira
- Perinatal Brain Repair Group, Department of Maternal and Fetal Medicine, Institute for Women's Health, University College London , London , UK
| | - Mariya Hristova
- Perinatal Brain Repair Group, Department of Maternal and Fetal Medicine, Institute for Women's Health, University College London , London , UK
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42
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Abstract
In vivo modification of proteins by molecules with reactive carbonyl groups leads to intermediate and advanced glycation end products (AGE). Glucose is a significant glycation reagent due to its high physiological concentration and poorly controlled diabetics show increased albumin glycation. Increased levels of glycated and AGE-modified albumin have been linked to diabetic complications, neurodegeneration, and vascular disease. This review discusses glycated albumin formation, structural consequences of albumin glycation on drug binding, removal of circulating AGE by several scavenger receptors, as well as AGE-induced proinflammatory signaling through activation of the receptor for AGE. Analytical methods for quantitative detection of protein glycation and AGE formation are compared. Finally, the use of glycated albumin as a novel clinical marker to monitor glycemic control is discussed and compared to glycated hemoglobin (HbA1c) as long-term indicator of glycemic status.
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Chinchansure AA, Korwar AM, Kulkarni MJ, Joshi SP. Recent development of plant products with anti-glycation activity: a review. RSC Adv 2015. [DOI: 10.1039/c4ra14211j] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This review article summarizes the plant natural products that inhibit glycation at different stages leading to the AGEs formation.
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Affiliation(s)
| | - Arvind M. Korwar
- Division of Biochemical Sciences
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Mahesh J. Kulkarni
- Division of Biochemical Sciences
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
| | - Swati P. Joshi
- Division of Organic Chemistry
- CSIR-National Chemical Laboratory
- Pune 411 008
- India
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Abstract
Nonenzymatic glycation of macromolecules in diabetes mellitus (DM) is accelerated due to persistent hyperglycemia. Reducing sugar such as glucose reacts non enzymatically with free €-amino groups of proteins through series of reactions forming Schiff bases. These bases are converted into Amadori product and further into AGEs. Non enzymatic glycation has the potential to alter the biological, structural and functional properties of macromolecules both in vitro and in vivo. Studies have suggested that amadori as well as AGEs are involved in the micro-macro vascular complications in DM, but most studies have focused on the role of AGEs in vascular complications of diabetes. Recently putative AGE-induced patho-physiology has shifted attention from the possible role of amadori-modified proteins, the predominant form of the glycated proteins in the development of the diabetic complications. Human serum albumin (HSA), the most abundant protein in circulation contains 59 lysine and 23 arginine residues that could, in theory be involved in glycation. Albumin has dual nature, first as a marker of intermediate glycation and second as a causative agent of the damage of tissues. Among the blood proteins, hemoglobin and albumin are the most common proteins that are glycated. HSA with a shorter half life than RBC, appears to be an alternative marker of glycemic control as it can indicate blood glucose status over a short period (2-3 weeks) and being unaffected by RBCs life span and variant haemoglobin, anemia etc which however, affect HbA1c. On the other hand, Amadori albumin may accumulate in the body tissues of the diabetic patients and participate in secondary complications. Amadori-albumin has potential role in diabetic glomerulosclerosis due to long term hyperglycaemia and plays an important role in the pathogenesis of diabetic nephropathy. This review is an approach to compile both the nature of glycated albumin as a damaging agent of tissues and as an intermediate diagnostic marker and its potential role in diabetic nephropathy.
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Affiliation(s)
- Km. Neelofar
- Rajiv Gandhi Centre for Diabetes and Endocrinology, J.N. Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Jamal Ahmad
- Rajiv Gandhi Centre for Diabetes and Endocrinology, J.N. Medical College, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
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Salahuddin P, Rabbani G, Khan RH. The role of advanced glycation end products in various types of neurodegenerative disease: a therapeutic approach. Cell Mol Biol Lett 2014; 19:407-37. [PMID: 25141979 PMCID: PMC6275793 DOI: 10.2478/s11658-014-0205-5] [Citation(s) in RCA: 121] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 07/28/2014] [Indexed: 12/12/2022] Open
Abstract
Protein glycation is initiated by a nucleophilic addition reaction between the free amino group from a protein, lipid or nucleic acid and the carbonyl group of a reducing sugar. This reaction forms a reversible Schiff base, which rearranges over a period of days to produce ketoamine or Amadori products. The Amadori products undergo dehydration and rearrangements and develop a cross-link between adjacent proteins, giving rise to protein aggregation or advanced glycation end products (AGEs). A number of studies have shown that glycation induces the formation of the β-sheet structure in β-amyloid protein, α-synuclein, transthyretin (TTR), copper-zinc superoxide dismutase 1 (Cu, Zn-SOD-1), and prion protein. Aggregation of the β-sheet structure in each case creates fibrillar structures, respectively causing Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, familial amyloid polyneuropathy, and prion disease. It has been suggested that oligomeric species of glycated α-synuclein and prion are more toxic than fibrils. This review focuses on the pathway of AGE formation, the synthesis of different types of AGE, and the molecular mechanisms by which glycation causes various types of neurodegenerative disease. It discusses several new therapeutic approaches that have been applied to treat these devastating disorders, including the use of various synthetic and naturally occurring inhibitors. Modulation of the AGE-RAGE axis is now considered promising in the prevention of neurodegenerative diseases. Additionally, the review covers several defense enzymes and proteins in the human body that are important anti-glycating systems acting to prevent the development of neurodegenerative diseases.
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Affiliation(s)
- Parveen Salahuddin
- Distributed Information Sub Center Unit, Aligarh Muslim University, Aligarh, 202 002 India
| | - Gulam Rabbani
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202 002 India
| | - Rizwan Hasan Khan
- Interdisciplinary Biotechnology Unit, Aligarh Muslim University, Aligarh, 202 002 India
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Indurthi VS, Leclerc E, Vetter SW. Calorimetric investigation of diclofenac drug binding to a panel of moderately glycated serum albumins. Eur J Pharm Sci 2014; 59:58-68. [DOI: 10.1016/j.ejps.2014.04.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 04/01/2014] [Accepted: 04/02/2014] [Indexed: 01/27/2023]
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47
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Shahab U, Tabrez S, Khan MS, Akhter F, Khan MS, Saeed M, Ahmad K, Srivastava AK, Ahmad S. Immunogenicity of DNA-advanced glycation end product fashioned through glyoxal and arginine in the presence of Fe³⁺: its potential role in prompt recognition of diabetes mellitus auto-antibodies. Chem Biol Interact 2014; 219:229-40. [PMID: 24968179 DOI: 10.1016/j.cbi.2014.06.012] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Revised: 04/24/2014] [Accepted: 06/13/2014] [Indexed: 12/11/2022]
Abstract
Glyoxal, methylglyoxal and 3-deoxyglucosones are reactive dicarbonyl compounds, which transform free amino groups of proteins and lipoproteins macromolecule into advanced glycation end-products (AGEs). AGEs play a significant role in the pathophysiology of aging and diabetic complications because of their genotoxic effect. Glyoxal also reacts with free amino group of nucleic acids resulting in the formation of DNA-AGEs. The present study reports the genotoxicity and immunogenicity of AGEs formed by Glyoxal-Arginine-Fe(3+) (G-Arg-Fe(3+)) system as a glycating agent. Immunogenicity of native and G-Arg-Fe(3+)-DNA was probed in female rabbits. Immunofluorescence suggests the presence of immune complex deposition in the kidney section of immunized rabbits. Spectroscopic analysis and melting temperature indicates the structural modification in the human DNA. The modified human DNA is found to be highly immunogenic, whereas unmodified form was simply non-immunogenic. This study shows the presence of auto-antibodies against G-Arg-Fe(3+) modified human DNA in the sera of diabetes type 1 and in few cases type 2 patients due to secondary complications of nephropathy. The glyco-oxidative lesions have also been detected in the lymphocyte DNA isolated from patients having type 1 and type 2 diabetes. The results show structural perturbations generating new epitopes in G-Arg-Fe(3+)-DNA rendering it pretty immunogenic.
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Affiliation(s)
- Uzma Shahab
- Department of Biochemistry, Central Drug Research Institute, Lucknow, U.P., India; Department of Biochemistry, King George Medical University, Lucknow, U.P., India
| | - Shams Tabrez
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - M Salman Khan
- Department of Biosciences, Integral University, Lucknow, U.P., India
| | - Firoz Akhter
- Department of Biosciences, Integral University, Lucknow, U.P., India
| | - Mohd Sajid Khan
- Department of Biosciences, Integral University, Lucknow, U.P., India
| | - Mohd Saeed
- Department of Biosciences, Integral University, Lucknow, U.P., India
| | - Khurshid Ahmad
- Department of Biosciences, Integral University, Lucknow, U.P., India
| | - A K Srivastava
- Department of Biosciences, Integral University, Lucknow, U.P., India
| | - Saheem Ahmad
- Department of Biosciences, Integral University, Lucknow, U.P., India.
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Protein glycation during aging and in cardiovascular disease. J Proteomics 2013; 92:248-59. [DOI: 10.1016/j.jprot.2013.05.012] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/08/2013] [Accepted: 05/12/2013] [Indexed: 01/11/2023]
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49
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Severin FF, Feniouk BA, Skulachev VP. Advanced glycation of cellular proteins as a possible basic component of the “master biological clock”. BIOCHEMISTRY (MOSCOW) 2013; 78:1043-7. [DOI: 10.1134/s0006297913090101] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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50
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Bakala H, Hamelin M, Mary J, Borot-Laloi C, Friguet B. Catalase, a target of glycation damage in rat liver mitochondria with aging. Biochim Biophys Acta Mol Basis Dis 2012; 1822:1527-34. [DOI: 10.1016/j.bbadis.2012.05.016] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Revised: 05/11/2012] [Accepted: 05/31/2012] [Indexed: 11/29/2022]
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