1
|
Boteva E, Doychev K, Kirilov K, Handzhiyski Y, Tsekovska R, Gatev E, Mironova R. Deglycation activity of the Escherichia coli glycolytic enzyme phosphoglucose isomerase. Int J Biol Macromol 2024; 257:128541. [PMID: 38056730 DOI: 10.1016/j.ijbiomac.2023.128541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 11/24/2023] [Accepted: 11/30/2023] [Indexed: 12/08/2023]
Abstract
Glycation is a spontaneous chemical reaction, which affects the structure and function of proteins under normal physiological conditions. Therefore, organisms have evolved diverse mechanisms to combat glycation. In this study, we show that the Escherichia coli glycolytic enzyme phosphoglucose isomerase (Pgi) exhibits deglycation activity. We found that E. coli Pgi catalyzes the breakdown of glucose 6-phosphate (G6P)-derived Amadori products (APs) in chicken lysozyme. The affinity of Pgi to the glycated lysozyme (Km, 1.1 mM) was ten times lower than the affinity to its native substrate, fructose 6-phosphate (Km, 0.1 mM). However, the high kinetic constants of the enzyme with the glycated lysozyme (kcat, 396 s-1 and kcat/Km, 3.6 × 105 M-1 s-1) indicated that the Pgi amadoriase activity may have physiological implications. Indeed, when using total E. coli protein (20 mg/mL) as a substrate in the deglycation reaction, we observed a release of G6P from the bacterial protein at a Pgi specific activity of 33 μmol/min/mg. Further, we detected 11.4 % lower APs concentration in protein extracts from Pgi-proficient vs. deficient cells (p = 0.0006) under conditions where the G6P concentration in Pgi-proficient cells was four times higher than in Pgi-deficient cells (p = 0.0001). Altogether, these data point to physiological relevance of the Pgi deglycation activity.
Collapse
Affiliation(s)
- Elitsa Boteva
- Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Konstantin Doychev
- Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Kiril Kirilov
- Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Yordan Handzhiyski
- Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Rositsa Tsekovska
- Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Evan Gatev
- Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria
| | - Roumyana Mironova
- Roumen Tsanev Institute of Molecular Biology, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria.
| |
Collapse
|
2
|
Mossine VV, Mawhinney TP. 1-Amino-1-deoxy-d-fructose ("fructosamine") and its derivatives. Adv Carbohydr Chem Biochem 2023; 83:27-132. [PMID: 37968038 DOI: 10.1016/bs.accb.2023.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Fructosamine has long been considered as a key intermediate of the Maillard reaction, which to a large extent is responsible for specific aroma, taste, and color formation in thermally processed or dehydrated foods. Since the 1980s, however, as a product of the Amadori rearrangement reaction between glucose and biologically significant amines such as proteins, fructosamine has experienced a boom in biomedical research, mainly due to its relevance to pathologies in diabetes and aging. In this chapter, we assess the scope of the knowledge on and applications of fructosamine-related molecules in chemistry, food, and health sciences, as reflected mostly in publications within the past decade. Methods of fructosamine synthesis and analysis, its chemical, and biological properties, and degradation reactions, together with fructosamine-modifying and -recognizing proteins are surveyed.
Collapse
Affiliation(s)
- Valeri V Mossine
- Department of Biochemistry, University of Missouri, Columbia, MO, United States
| | - Thomas P Mawhinney
- Department of Biochemistry, University of Missouri, Columbia, MO, United States.
| |
Collapse
|
3
|
Mehler J, Behringer KI, Rollins RE, Pisarz F, Klingl A, Henle T, Heermann R, Becker NS, Hellwig M, Lassak J. Identification of Pseudomonas asiatica subsp. bavariensis str. JM1 as the first N ε -carboxy(m)ethyllysine degrading soil bacterium. Environ Microbiol 2022; 24:3229-3241. [PMID: 35621031 DOI: 10.1111/1462-2920.16079] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 05/18/2022] [Accepted: 05/19/2022] [Indexed: 11/03/2022]
Abstract
Thermal food processing leads to the formation of advanced glycation end products (AGE) such as Nε -carboxymethyllysine (CML). Accordingly, these non-canonical amino acids are an important part of the human diet. However, CML is only partially decomposed by our gut microbiota and up to 30% are excreted via feces and, hence, enter the environment. In frame of this study, we isolated a soil bacterium that can grow on CML as well as its higher homologue Nε -carboxyethyllysine (CEL) as sole source of carbon. Bioinformatic analyses upon whole genome sequencing revealed a subspecies of Pseudomonas asiatica, which we named 'bavariensis'. We performed a metabolite screening of P. asiatica subsp. bavariensis str. JM1 grown either on CML or CEL and identified N-carboxymethylaminopentanoic acid (CM-APA), and N-carboxyethylaminopentanoic acid (CE-APA), respectively. We further detected α-aminoadipate as intermediate in the metabolism of CML. These reaction products suggest two routes of degradation: While CEL seems to be predominantly processed from the α-C-atom, decomposition of CML can also be initiated with cleavage of the carboxymethyl group and under the release of acetate. Thus, our study provides novel insights into the metabolism of two important AGEs and how these are processed by environmental bacteria. This article is protected by copyright. All rights reserved.
Collapse
Affiliation(s)
- Judith Mehler
- Division of Microbiology, Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg, Martinsried, Germany
| | - Kim Ina Behringer
- Technische Universität Braunschweig - Institute of Food Chemistry, Braunschweig, Germany
| | - Robert Ethan Rollins
- Division of Evolutionary Biology, Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg, Martinsried, Germany
| | - Friederike Pisarz
- Institute of Molecular Physiology, Microbiology and Wine Research, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Andreas Klingl
- Division of Botany, Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg, Martinsried, Germany
| | - Thomas Henle
- Chair of Food Chemistry, Technische Universität Dresden, D-01062, Dresden, Germany
| | - Ralf Heermann
- Institute of Molecular Physiology, Microbiology and Wine Research, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Noémie S Becker
- Division of Evolutionary Biology, Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg, Martinsried, Germany
| | - Michael Hellwig
- Technische Universität Braunschweig - Institute of Food Chemistry, Braunschweig, Germany.,Chair of Special Food Chemistry, Technische Universität Dresden, D-01062, Dresden, Germany
| | - Jürgen Lassak
- Division of Microbiology, Faculty of Biology, Ludwig-Maximilians-Universität München, Planegg, Martinsried, Germany
| |
Collapse
|
4
|
Lassak J, Sieber A, Hellwig M. Exceptionally versatile take II: post-translational modifications of lysine and their impact on bacterial physiology. Biol Chem 2022; 403:819-858. [PMID: 35172419 DOI: 10.1515/hsz-2021-0382] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 01/05/2022] [Indexed: 01/16/2023]
Abstract
Among the 22 proteinogenic amino acids, lysine sticks out due to its unparalleled chemical diversity of post-translational modifications. This results in a wide range of possibilities to influence protein function and hence modulate cellular physiology. Concomitantly, lysine derivatives form a metabolic reservoir that can confer selective advantages to those organisms that can utilize it. In this review, we provide examples of selected lysine modifications and describe their role in bacterial physiology.
Collapse
Affiliation(s)
- Jürgen Lassak
- Department of Biology I, Microbiology, Ludwig-Maximilians-Universität München, Großhaderner Straße 2-4, D-82152 Planegg, Germany
| | - Alina Sieber
- Department of Biology I, Microbiology, Ludwig-Maximilians-Universität München, Großhaderner Straße 2-4, D-82152 Planegg, Germany
| | - Michael Hellwig
- Technische Universität Braunschweig - Institute of Food Chemistry, Schleinitzstraße 20, D-38106 Braunschweig, Germany
| |
Collapse
|
5
|
Sarmah S, Roy AS. A review on prevention of glycation of proteins: Potential therapeutic substances to mitigate the severity of diabetes complications. Int J Biol Macromol 2022; 195:565-588. [DOI: 10.1016/j.ijbiomac.2021.12.041] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 12/03/2021] [Accepted: 12/05/2021] [Indexed: 12/21/2022]
|
6
|
Takahashi M, Taniguchi N. Maillard reaction in vivo and its relevance to diseases: editorial and dedication. Glycoconj J 2021; 38:277-281. [PMID: 33893942 PMCID: PMC8116256 DOI: 10.1007/s10719-021-09996-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Revised: 02/23/2021] [Accepted: 02/26/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Motoko Takahashi
- Sapporo Medical University, South-1 West-17, Chuo-ku, Sapporo, 0608556, Japan.
| | - Naoyuki Taniguchi
- Osaka International Cancer Institute, 3-1-69, Otemae, Chuo-ku, Osaka, 541-8567, Japan
| |
Collapse
|
7
|
|
8
|
Abstract
The discovery of the enzymatic formation of lactic acid from methylglyoxal dates back to 1913 and was believed to be associated with one enzyme termed ketonaldehydemutase or glyoxalase, the latter designation prevailed. However, in 1951 it was shown that two enzymes were needed and that glutathione was the required catalytic co-factor. The concept of a metabolic pathway defined by two enzymes emerged at this time. Its association to detoxification and anti-glycation defence are its presently accepted roles, since methylglyoxal exerts irreversible effects on protein structure and function, associated with misfolding. This functional defence role has been the rationale behind the possible use of the glyoxalase pathway as a therapeutic target, since its inhibition might lead to an increased methylglyoxal concentration and cellular damage. However, metabolic pathway analysis showed that glyoxalase effects on methylglyoxal concentration are likely to be negligible and several organisms, from mammals to yeast and protozoan parasites, show no phenotype in the absence of one or both glyoxalase enzymes. The aim of the present review is to show the evolution of thought regarding the glyoxalase pathway since its discovery 100 years ago, the current knowledge on the glyoxalase enzymes and their recognized role in the control of glycation processes.
Collapse
|
9
|
Atanasova A, Handzhiyski Y, Sredovska-Bozhinov A, Popova E, Odjakova M, Datsenko K, Wanner BL, Ivanov I, Mironova R. Substrate Specificity of the Escherichia ColiF RLB Amadoriase. BIOTECHNOL BIOTEC EQ 2012. [DOI: 10.5504/50yrtimb.2011.0026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
|
10
|
Szwergold BS, Bunker RD, Loomes KM. The physiological substrates of fructosamine-3-kinase-related-protein (FN3KRP) are intermediates of nonenzymatic reactions between biological amines and ketose sugars (fructation products). Med Hypotheses 2011; 77:739-44. [PMID: 21924559 DOI: 10.1016/j.mehy.2011.07.027] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2011] [Revised: 07/12/2011] [Accepted: 07/13/2011] [Indexed: 12/13/2022]
Abstract
The physiological function of fructosamine-3-kinase (FN3K) is relatively well understood. As shown in several studies, most conclusively by data on the FN3K-KO mouse, this enzyme breaks down compounds produced by the non-enzymatic glycation of proteins by D-glucose. In contrast with FN3K, very little is known about the function of the fructosamine-3-kinase-related-protein (FN3KRP) even though it has a 65% amino-acid sequence identity with FN3K. We do know that this enzyme is a kinase as evidenced by its ability to phosphorylate non-physiological compounds such a psicosamines, ribulosamines, erythrulosamines, and glucitolamines. However, FN3KRP does not phosphorylate any of the numerous Amadori products that are the physiological substrates of FN3K. The fact that FN3KRP is highly conserved in all vertebrates and present throughout nature suggests that it plays an important role in cellular metabolism and makes identification of its physiological substrates an important objective. In this paper, we propose that FN3KRP phosphorylates products resulting from a non-enzymatic glycation of amines by ketoses (fructation) that involves a 2,3-enolization and produces the stable Amadori intermediate, 2-amino-2-deoxy-D-ribo-hex-3-ulose (ADRH). This ketosamine is then phosphorylated to 2-amino-2-deoxy-D-ribo-hex-3-ulose-4-phosphate (ADRH-4-P). Since phosphates are much better leaving groups than hydroxyls, this destabilizes the C-2 amine bond and results in a spontaneous β-elimination of the phosphate to regenerate an unmodified amine with the concomitant production of 4-deoxy-2,3-diulose. Consequently, we postulate that the principal physiological function of FN3KRP is the breakdown of nonenzymatic fructation products. If confirmed in future studies, this hypothesis opens up new perspectives for an improved understanding of biological Maillard reactions and mechanisms for their control and/or reversal.
Collapse
|
11
|
Occurrence, characteristics, and applications of fructosyl amine oxidases (amadoriases). Appl Microbiol Biotechnol 2010; 86:1613-9. [DOI: 10.1007/s00253-010-2523-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2010] [Revised: 02/23/2010] [Accepted: 02/24/2010] [Indexed: 10/19/2022]
|
12
|
|
13
|
Gan CY, Cheng LH, Azahari B, Easa AM. In-vitrodigestibility and amino acid composition of soy protein isolate cross-linked with microbial transglutaminase followed by heating with ribose. Int J Food Sci Nutr 2009; 60 Suppl 7:99-108. [DOI: 10.1080/09637480802635090] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
Ferri S, Kim S, Tsugawa W, Sode K. Review of fructosyl amino acid oxidase engineering research: a glimpse into the future of hemoglobin A1c biosensing. J Diabetes Sci Technol 2009; 3:585-92. [PMID: 20144298 PMCID: PMC2769878 DOI: 10.1177/193229680900300324] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Glycated proteins, particularly glycated hemoglobin A1c, are important markers for assessing the effectiveness of diabetes treatment. Convenient and reproducible assay systems based on the enzyme fructosyl amino acid oxidase (FAOD) have become attractive alternatives to conventional detection methods. We review the available FAOD-based assays for measurement of glycated proteins as well as the recent advances and future direction of FAOD research. Future research is expected to lead to the next generation of convenient, simple, and economical sensors for glycated protein, ideally suited for point-of-care treatment and self-monitoring applications.
Collapse
Affiliation(s)
- Stefano Ferri
- Department of Biotechnology, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
| | - Seungsu Kim
- Department of Biotechnology, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
| | - Wakako Tsugawa
- Department of Biotechnology, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
- Department of Technology Risk Management, Graduate School of Technology Management, Tokyo University of Agriculture and Technology, Tokyo, Japan
| | - Koji Sode
- Department of Biotechnology, Graduate School of Engineering, Tokyo University of Agriculture and Technology, Koganei, Japan
- Department of Technology Risk Management, Graduate School of Technology Management, Tokyo University of Agriculture and Technology, Tokyo, Japan
| |
Collapse
|
15
|
van Hellemond EW, Leferink NGH, Heuts DPHM, Fraaije MW, van Berkel WJH. Occurrence and Biocatalytic Potential of Carbohydrate Oxidases. ADVANCES IN APPLIED MICROBIOLOGY 2006; 60:17-54. [PMID: 17157632 DOI: 10.1016/s0065-2164(06)60002-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Erik W van Hellemond
- Laboratory of Biochemistry, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | | | | | | | | |
Collapse
|
16
|
Miller AG, Hegge S, Uhlmann A, Gerrard JA. A continuous enzyme assay and characterisation of fructosyl amine oxidase enzymes (EC 1.5.3). Arch Biochem Biophys 2005; 434:60-6. [PMID: 15629109 DOI: 10.1016/j.abb.2004.10.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2004] [Revised: 10/08/2004] [Indexed: 11/30/2022]
Abstract
Enzymatic reversal of the Maillard reaction is a growing area of research. Fructosyl amine oxidase enzymes (EC 1.5.3) have attracted recent attention through demonstration of their ability to deglycate Amadori products, low molecular weight intermediates formed during the early stage of the Maillard reaction. Although stopped assays have been described, a bottleneck in current studies is the lack of continuous kinetic assays. Here, we describe the development of a continuous, coupled enzyme assay and its successful application to determining optimal storage conditions and the steady-state kinetic parameters of an enzyme from this group, amadoriase I. A K(m)(app) of 11 microM and a K(cat)(app) of 3.5s(-1) were determined using this assay using fructosyl propylamine as a substrate, which differ from previous reports. This method was also used to test the activity of two site-directed mutants of amadoriase I, H357N and S370A, which were found to be catalytically inactive.
Collapse
Affiliation(s)
- Antonia G Miller
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand
| | | | | | | |
Collapse
|
17
|
Wiame E, Duquenne A, Delpierre G, Van Schaftingen E. Identification of enzymes acting on α-glycated amino acids inBacillus subtilis. FEBS Lett 2004; 577:469-72. [PMID: 15556630 DOI: 10.1016/j.febslet.2004.10.049] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2004] [Revised: 10/05/2004] [Accepted: 10/18/2004] [Indexed: 11/16/2022]
Abstract
We have characterized the Bacillus subtilis homologs of fructoselysine 6-kinase and fructoselysine-6-phosphate deglycase, two enzymes that specifically metabolize the Amadori compound fructose-epsilon-lysine in Escherichia coli. The B. subtilis enzymes also catalyzed the phosphorylation of fructosamines to fructosamine 6-phosphates (YurL) and the conversion of the latter to glucose 6-phosphate and a free amino acid (YurP). However, their specificity was totally different from that of the E. coli enzymes, since they acted on fructoseglycine, fructosevaline (YurL) or their 6-phosphoderivatives (YurP) with more than 30-fold higher catalytic efficiencies than on fructose-alpha-lysine (6-phosphate). These enzymes are therefore involved in the metabolism of alpha-glycated amino acids.
Collapse
Affiliation(s)
- Elsa Wiame
- Laboratory of Physiological Chemistry, ICP and Université Catholique de Louvain, P.O. Box 7539, Avenue Hippocrate 75, B-1200 Brussels, Belgium
| | | | | | | |
Collapse
|
18
|
Maitin V, Rastall R. Enzyme glycation influences product yields during oligosaccharide synthesis by reverse hydrolysis. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.molcatb.2004.05.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
19
|
Wiame E, Van Schaftingen E. Fructoselysine 3-epimerase, an enzyme involved in the metabolism of the unusual Amadori compound psicoselysine in Escherichia coli. Biochem J 2004; 378:1047-52. [PMID: 14641112 PMCID: PMC1224009 DOI: 10.1042/bj20031527] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2003] [Revised: 11/28/2003] [Accepted: 12/01/2003] [Indexed: 11/17/2022]
Abstract
The frl (fructoselysine) operon encodes fructoselysine 6-kinase and fructoselysine 6-phosphate deglycase, allowing the conversion of fructoselysine into glucose 6-phosphate and lysine. We now show that a third enzyme encoded by this operon catalyses the metal-dependent reversible interconversion of fructoselysine with its C-3 epimer, psicoselysine. The enzyme can be easily assayed through the formation of tritiated water from [3-3H]fructoselysine. Psicoselysine supports the growth of Escherichia coli, causing the induction of the three enzymes of the frl operon. No growth on fructoselysine or psicoselysine was observed with Tn5 mutants in which the putative transporter (FrlA) or fructoselysine 6-phosphate deglycase (FrlB) had been inactivated, indicating the importance of the frl operon for the metabolism of both substrates. The ability of E. coli to grow on psicoselysine suggests the occurrence of this unusual Amadori compound in Nature.
Collapse
Affiliation(s)
- Elsa Wiame
- Laboratory of Physiological Chemistry, Christian de Duve Institute of Cellular Pathology and Université Catholique de Louvain, Avenue Hippocrate 75, B-1200 Brussels, Belgium
| | | |
Collapse
|
20
|
Abstract
A number of natural or synthetic compounds as AGE inhibitors have been proposed, discovered or currently being advanced by others and us. We have identified two new classes of aromatic compounds; aryl- (and heterocyclic) ureido and aryl (and heterocyclic) carboxamido phenoxyisobutyric acids, and benzoic acid derivatives and related compounds, as potential inhibitors of glycation and AGE formation. Some of these novel compounds also showed "AGE-breaking" activities in vitro. Current evidence is that chelation of transition metals and/or trapping or indirect inhibition of formation of reactive carbonyl compounds are involved in the mechanisms of action of these novel AGE inhibitors and breakers. Here, we review the inhibitors of glycation and AGE-breakers published to date and present the results of our in vitro and in vivo investigations on a number of these novel AGE inhibitors. These AGE-inhibitors and AGE-breakers may find therapeutic use in the treatment of diseases that AGE formation and accumulation may be responsible for their pathogenesis such as diabetes, Alzheimer's, rheumatoid arthritis, and atherosclerosis.
Collapse
Affiliation(s)
- Samuel Rahbar
- Department of Diabetes, Beckman Research Institute of the City of Hope National Medical Center, 1500 E. Duarte Road, Duarte, CA 91010, USA.
| | | |
Collapse
|
21
|
Abstract
Reducing sugars such as glucose react with amino groups in proteins to form the Amadori product, which can undergo a wide range of chemical modifications and form cross-links in tissue proteins. There is growing evidence to suggest that accumulation of glycation products is associated with aging and disease progression, as in diabetes. Thus, the design and discovery of inhibitors for the glycation cascade would potentially offer a promising therapeutic approach for the prevention of glycation related diseases, especially diabetes. Two types of enzymes, fructosyl lysine oxidase and fructose lysine 3-phosphokinase, catalyze the deglycation reaction and generate free amine groups. This paper reviews the biochemical properties of these "amadoriase" enzymes, such as structural-function relationship, kinetic mechanism, and substrate specificity, as well as their biological roles and applications in the protein deglycation.
Collapse
Affiliation(s)
- Xinle Wu
- Institute of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | | |
Collapse
|
22
|
Wiame E, Delpierre G, Collard F, Van Schaftingen E. Identification of a pathway for the utilization of the Amadori product fructoselysine in Escherichia coli. J Biol Chem 2002; 277:42523-9. [PMID: 12147680 DOI: 10.1074/jbc.m200863200] [Citation(s) in RCA: 107] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Escherichia coli was found to grow on fructoselysine as an energetic substrate at a rate of about one-third of that observed with glucose. Extracts of cells grown on fructoselysine catalyzed in the presence of ATP the phosphorylation of fructoselysine and a delayed formation of glucose 6-phosphate from this substrate. Data base searches allowed us to identify an operon containing a putative kinase (YhfQ) belonging to the PfkB/ ribokinase family, a putative deglycase (YhfN), homologous to the isomerase domain of glucosamine-6-phosphate synthase, and a putative cationic amino acid transporter (YhfM). The proteins encoded by YhfQ and YhfN were overexpressed in E. coli, purified, and shown to catalyze the ATP-dependent phosphorylation of fructoselysine to a product identified as fructoselysine 6-phosphate by 31P NMR (YhfQ), and the reversible conversion of fructoselysine 6-phosphate and water to lysine and glucose 6-phosphate (YhfN). The K(m) of the kinase for fructoselysine amounted to 18 microm, and the K(m) of the deglycase for fructoselysine 6-phosphate, to 0.4 mm. A value of 0.15 m was found for the equilibrium constant of the deglycase reaction. The kinase and the deglycase were both induced when E. coli was grown on fructoselysine and then reached activities sufficient to account for the rate of fructoselysine utilization.
Collapse
Affiliation(s)
- Elsa Wiame
- Laboratory of Physiological Chemistry, University of Louvain and the Christian de Duve Institute of Cellular Pathology, B-1200 Brussels, Belgium
| | | | | | | |
Collapse
|
23
|
Kouzuma T, Usami T, Yamakoshi M, Takahashi M, Imamura S. An enzymatic method for the measurement of glycated albumin in biological samples. Clin Chim Acta 2002; 324:61-71. [PMID: 12204426 DOI: 10.1016/s0009-8981(02)00207-3] [Citation(s) in RCA: 177] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND In order to determine glycated albumin more easily and rapidly, we developed a new enzymatic method for glycated albumin in blood samples. METHODS The method involves use of albumin-specific proteinase, ketoamine oxidase and serum albumin assay reagent. In the assay, glycated albumin is hydrolyzed to glycated amino acids by proteinase digestion, and ketoamine oxidase oxidizes the glycated amino acids to produce hydrogen peroxide, which is quantitatively measured. Glycated albumin is calculated as the percentage of glycated albumin in total albumin. RESULTS The calibration curve for glycated albumin concentration was linear (r(p)=0.999) between 0.0 and 50.0 g/l and that for albumin concentration was linear (r(p)=0.999) between 0.0 and 60.0 g/l. The analytical recoveries of exogenous glycated albumin added to serum were 100-102.5%. The within-run and between-run CVs were 0.45-0.67% and 1.09-1.26%, respectively. This method was free from interference by bilirubin, chyle, glucose, globulins and labile intermediate. Weak interference by hemoglobin and ascorbic acid was observed. Glycated albumin detected by the present method was significantly correlated with glycated albumin detected by high-performance liquid-chromatographic (HPLC) method (serum: r(s)=0.989, plasma: r(p)=0.992). CONCLUSIONS This new enzymatic method is simple, rapid, allows multiple determinations and enables quantitative analysis of glycated albumin.
Collapse
Affiliation(s)
- Takuji Kouzuma
- Diagnostics R&D Department, Fine Chemicals and Diagnostics Division, Health Care Company, Asahi Kasei Corporation, 632-1, Mifuku, Ohito-cho, Tagata-gun, Shizuoka-ken, 410-2321, Japan.
| | | | | | | | | |
Collapse
|
24
|
Poling SM, Plattner RD, Weisleder D. N-(1-deoxy-D-fructos-1-yl) fumonisin B(1), the initial reaction product of fumonisin B(1) and D-glucose. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2002; 50:1318-1324. [PMID: 11853524 DOI: 10.1021/jf010955g] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Incubation of fumonisin B(1) and D-glucose in aqueous solutions resulted in the formation of N-(1-deoxy-D-fructos-1-yl) fumonisin B(1) in addition to the previously reported N-(carboxymethyl) fumonisin B(1). N-(1-Deoxy-D-fructos-1-yl) fumonisin B(1) is the first stable product formed after the Amadori rearrangement of the Schiff base formed by the reaction of the primary amine of fumonisin B(1) and the aldehyde group of D-glucose. N-(1-Deoxy-D-fructos-1-yl) fumonisin B(1) was synthesized by reacting fumonisin B(1) with an excess of D-glucose in methanol and heating for 6 h at 64 degrees C. It was purified using C(18) and strong cation exchange solid-phase extraction cartridges and characterized by nuclear magnetic resonance and liquid chromatography-mass spectrometry. Subsequently, N,N-dimethylformamide was found to be a better reaction solvent, requiring reaction for only 2-3 h at 64 degrees C and eliminating the formation of methyl esters. Alkaline hydrolysis of N-(1-deoxy-D-fructos-1-yl) fumonisin B(1) gave a mixture of hydrolyzed fumonisin B(1) and hydrolyzed N-(carboxymethyl) fumonisin B(1).
Collapse
Affiliation(s)
- Stephen M Poling
- Mycotoxin Research, National Center for Agricultural Utilization Research, United States Department of Agriculture, Peoria, IL 61604, USA.
| | | | | |
Collapse
|
25
|
Faist V, Erbersdobler HF. Metabolic transit and in vivo effects of melanoidins and precursor compounds deriving from the Maillard reaction. ANNALS OF NUTRITION & METABOLISM 2001; 45:1-12. [PMID: 11244181 DOI: 10.1159/000046699] [Citation(s) in RCA: 134] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Metabolic transit data on food-borne advanced MRPs (Maillard reaction products) termed melanoidins are yet not completely elucidated and it is still an open question whether isolated melanoidin structures undergo metabolic biotransformation and subsequently cause physiological effects in vivo. Advanced MRPs, acting as premelanoidins, and melanoidins are formed under severe heat treatment of foods and are ingested with the habitual diet at considerable amounts. Metabolic transit data are known for Amadori compounds classified as early MRPs, like, e.g., fructose-lysine. For rats and humans, the percentages of ingested free versus protein-bound fructose-lysine excreted in the urine were found within ranges of 60-80% and 3-10%, respectively. Balance studies on free advanced MRPs are still lacking, but protein-bound low-molecular-weight premelanoidins and high-molecular-weight melanoidins have already been investigated in animal experiments using (14)C-tracer isotopes. The amount of ingested radioactivity absorbed and excreted in the urine was found at levels ranging from 16 to 30% and from 1 to 5% for premelanoidins and melanoidins, respectively. These different metabolic transit data of premelanoidins and melanoidins can be explained by the following mechanisms involved: (i) intestinal degradation by digestive and microbial enzymes; (ii) absorption of these compounds or their degradates, and (iii) tissue retention. Structure specific in vivo effects have been identified for protein-bound premelanoidins on intestinal microbial activity, xenobiotic biotransformation enzymes and further glycation reactions. The latter are hypothesized to be involved in the aging process and in the course of different diseases. Further investigations are needed to clarify synergistic in vivo effects of dietary ingested melanoidins and endogenously formed glycation products.
Collapse
Affiliation(s)
- V Faist
- Institut für Humanernährung und Lebensmittelkunde, Universität Kiel, Deutschland.
| | | |
Collapse
|
26
|
A new concept for the construction of an artificial dehydrogenase for fructosylamine compounds and its application for an amperometric fructosylamine sensor. Anal Chim Acta 2001. [DOI: 10.1016/s0003-2670(00)01304-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
27
|
Frey H, Boland W, Jaenicke L, Jaenicke L. Wissenschaft aktuell. CHEM UNSERER ZEIT 1997. [DOI: 10.1002/ciuz.19970310404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
28
|
Hühmer AF, Aced GI, Perkins MD, Gürsoy RN, Jois DS, Larive C, Siahaan TJ, Schôneich C. Separation and analysis of peptides and proteins. Anal Chem 1997; 69:29R-57R. [PMID: 9195854 DOI: 10.1021/a1970003s] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- A F Hühmer
- Department of Pharmaceutical Chemistry, University of Kansas, Lawrence 66047, USA
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Takahashi M, Pischetsrieder M, Monnier VM. Molecular cloning and expression of amadoriase isoenzyme (fructosyl amine:oxygen oxidoreductase, EC 1.5.3) from Aspergillus fumigatus. J Biol Chem 1997; 272:12505-7. [PMID: 9139700 DOI: 10.1074/jbc.272.19.12505] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Amadoriase is an enzyme catalyzing the oxidative deglycation of Amadori products to yield corresponding amino acids, glucosone, and H2O2. We previously reported the purification and characterization of two amadoriase isozymes from Aspergillus sp. that degrade both glycated low molecular weight amines and amino acids (Takahashi, M., Pischetsrieder, M., and Monnier, V. M. (1997) J. Biol. Chem. 272, 3437-3443). To identify the primary structure of the enzymes, we have prepared a cDNA library from Aspergillus fumigatus induced with fructosyl propylamine and isolated a clone using polyclonal anti-amadoriase II antibody. The primary structure of the enzyme deduced from the nucleotide sequence comprises 438 amino acid residues with a predicted molecular mass of 48,798 Da. The deduced primary structure exhibits the presence of an ADP-binding motif near the NH2 terminus. The identity of the amadoriase II cDNA was further confirmed by expression in Escherichia coli cells with an inducible expression system. Northern blotting analysis revealed that amadoriase II was induced by fructosyl propylamine in a dose-dependent manner.
Collapse
Affiliation(s)
- M Takahashi
- Institute of Pathology, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | | | | |
Collapse
|
30
|
Takahashi M, Pischetsrieder M, Monnier VM. Isolation, purification, and characterization of amadoriase isoenzymes (fructosyl amine-oxygen oxidoreductase EC 1.5.3) from Aspergillus sp. J Biol Chem 1997; 272:3437-43. [PMID: 9013588 DOI: 10.1074/jbc.272.6.3437] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Four "amadoriase" enzyme fractions, which oxidatively degrade glycated low molecular weight amines and amino acids under formation of hydrogen peroxide and glucosone, were isolated from an Aspergillus sp. soil strain selected on fructosyl adamantanamine as sole carbon source. The enzymes were purified to homogeneity using a combination of ion exchange, hydroxyapatite, gel filtration, and Mono Q column chromatography. Molecular masses of amadoriase enzymes Ia, Ib, and Ic were 51 kDa, and 49 kDa for amadoriase II. Apparent kinetic constants for Nepsilon-fructosyl Nalpha-t-butoxycarbonyl lysine and fructosyl adamantanamine were almost identical for enzymes Ia, Ib, and Ic, but corresponding values for enzyme II were significantly different. FAD was identified in all enzymes based on its typical absorption spectrum. N-terminal sequence was identical for enzymes Ia and Ib (Ala-Pro-Ser-Ile-Leu-Ser-Thr-Glu-Ser-Ser-Ile-Ile-Val-Ile-Gly-Ala-Gly- Thr-Trp-Gly-) and Ic except that the first 5 amino acids were truncated. The sequence of enzyme II was different (Ala-Val-Thr-Lys-Ser-Ser-Ser-Leu-Leu-Ile-Val-Gly-Ala-Gly-Thr-Trp-Gly- Thr-Ser-Thr-). All enzymes had the FAD cofactor-binding consensus sequence Gly-X-Gly-X-X-Gly within the N-terminal sequence. In summary, these data show the presence of two distinct amadoriase enzymes in the Aspergillus sp. soil strain selected on fructosyl adamantanamine and induced by fructosyl propylamine. In contrast to previous described enzymes, these novel amadoriase enzymes can deglycate both glycated amines and amino acids.
Collapse
Affiliation(s)
- M Takahashi
- Institute of Pathology, School of Medicine, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | | | | |
Collapse
|
31
|
Jacobson EL, Cervantes-Laurean D, Jacobson MK. ADP-ribose in glycation and glycoxidation reactions. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1997; 419:371-9. [PMID: 9193679 DOI: 10.1007/978-1-4419-8632-0_49] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Glycation is initiated by reaction of a reducing sugar with a protein amino group to generate a Schiff base adduct. Following an Amadori rearrangement to form a ketoamine adduct, a complex chemistry involving oxidation often leads to protein glycoxidation products referred to as advanced glycosylation end products (AGE). The AGE include protein carboxymethyllysine (CML) residues and a heterogeneous group of complex modifications characterized by high fluorescence and protein-protein cross links. The sugar sources for the glycoxidation of intracellular proteins are not well defined but pentoses have been implicated because they are efficient precursors for the formation of the fluorescent AGE, pentosidine. ADP-ribose, generated from NAD by ADP-ribose transfer reactions, is a likely intracellular source of a reducing pentose moiety. Incubation of ADP-ribose with histones results in the formation of ketoamine glycation conjugates and also leads to the rapid formation of protein CML residues, histone H1 dimers, and highly fluorescent products with properties similar to the AGE. ADP-ribose is much more efficient than other possible pentose donors for glycation and glycoxidation of protein amino groups. Recently developed methods that differentiate nonenzymic modifications of proteins by ADP-ribose from enzymic modifications now allow investigations to establish whether some protein modifications by monomers of ADP-ribose in vivo represent glycation and glycoxidation.
Collapse
Affiliation(s)
- E L Jacobson
- Department of Clinical Sciences, College of Pharmacy, University of Kentucky, Lexington 40506-0286, USA
| | | | | |
Collapse
|
32
|
Saxena AK, Saxena P, Monnier VM. Purification and characterization of a membrane-bound deglycating enzyme (1-deoxyfructosyl alkyl amino acid oxidase, EC 1.5.3) from a Pseudomonas sp. soil strain. J Biol Chem 1996; 271:32803-9. [PMID: 8955117 DOI: 10.1074/jbc.271.51.32803] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Searching for novel approaches for uncoupling glycation from hyperglycemia as a cause of diabetic complications, a Pseudomonas sp. soil strain containing a membrane-bound enzyme that deglycates amino acids under release of free fructosamine was isolated (Gerhardinger, C., Marion, S. M., Rovner, A., Glomb, M., and Monnier, V. M. (1995) J. Biol. Chem. 270, 218-224). This enzymatic activity was found to be very sensitive to inactivation by most detergents. From the plasma membrane ( approximately 3 mg/ml protein concentration), the enzyme could be solubilized in active form using 10 mM 3-[(3-chlolamidopropyl) dimethylammonio]-2-hydroxy-1-propanesulfonate aided by 2 M NaCl and 10% glycerol (27% optimal solubilization yield). The supernatant from a 55% saturation (NH4)2SO4 cut was fractionated onto a phenyl-Superose HR 5/5 column and enzymatic activity was eluted with a inverse gradient of (NH4)2SO4. Following removal of (NH4)2SO4 with PD-10 columns and fractionation with a Mono Q HR 5/5 column, a sharp peak of enzyme activity was eluted. Analysis on sodium dodecyl sulfate-polyacrylamide gel electrophoresis revealed a major band at 106 kDa and, on isoelectrofocusing gel, a pI of 5.1. The activity was completely inhibited by CN- and N3-, suggestive of copper as a likely cofactor. Identification of the protein was confirmed by affinity labeling with 14CN- and isoelectrofocusing. The "amadoriase" activity was also inhibited by Hg2+, Ag2+, Cu2+, and Zn2+ and had Km and Vmax values of 0.14 mM and 0.48 unit/ml (16 units/mg of protein), respectively, for epsilon-(1-deoxyfructosyl) aminocaproate. Significant activity was noted toward many glycated amino acids (highest with epsilon-fructosyl lysine) but not with glycated proteins. The sequence of the first 16 NH2-terminal amino acids and a search in various data bases revealed that this amadoriase enzyme is a novel protein. Based on its properties, this deglycating enzyme, which degrades Amadori products oxidatively into free fructosamine, is classified as fructosyl aminocaproate:oxygen oxidoreductase (EC 1.5.3).
Collapse
Affiliation(s)
- A K Saxena
- Institute of Pathology, Case Western Reserve University, Cleveland, Ohio 44106, USA
| | | | | |
Collapse
|
33
|
Cervantes-Laurean D, Jacobson EL, Jacobson MK. Glycation and glycoxidation of histones by ADP-ribose. J Biol Chem 1996; 271:10461-9. [PMID: 8631841 DOI: 10.1074/jbc.271.18.10461] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
The reaction of long lived proteins with reducing sugars has been implicated in the pathophysiology of aging and age-related diseases. A likely intranuclear source of reducing sugar is ADP-ribose, which is generated following DNA damage from the turnover of ADP-ribose polymers. In this study, ADP-ribose has been shown to be a potent histone glycation and glycoxidation agent in vitro. Incubation of ADP-ribose with histones H1, H2A, H2B, and H4 at pH 7.5 resulted in the formation of ketoamine glycation conjugates. Incubation of histone H1 with ADP-ribose also rapidly resulted in the formation of protein carboxymethyllysine residues, protein-protein cross-links, and highly fluorescent products with properties similar to the advanced glycosylation end product pentosidine. The formation of glycoxidation products was related to the degradation of ketoamine glycation conjugates by two different pathways. One pathway resulted in the formation of protein carboxymethyllysine residues and release of an ADP moiety containing a glyceric acid fragment. A second pathway resulted in the release of ADP, and it is postulated that this pathway is involved in the formation of histone-histone cross-links and fluorescent advanced glycosylation end products.
Collapse
Affiliation(s)
- D Cervantes-Laurean
- Division of Medicinal Chemistry and Pharmaceutics, College of Pharmacy, University of Kentucky, Lexington 40536, USA
| | | | | |
Collapse
|
34
|
Sell DR, Lane MA, Johnson WA, Masoro EJ, Mock OB, Reiser KM, Fogarty JF, Cutler RG, Ingram DK, Roth GS, Monnier VM. Longevity and the genetic determination of collagen glycoxidation kinetics in mammalian senescence. Proc Natl Acad Sci U S A 1996; 93:485-90. [PMID: 8552666 PMCID: PMC40263 DOI: 10.1073/pnas.93.1.485] [Citation(s) in RCA: 177] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
A fundamental question in the basic biology of aging is whether there is a universal aging process. If indeed such a process exists, one would expect that it develops at a higher rate in short- versus long-lived species. We have quantitated pentosidine, a marker of glycoxidative stress in skin collagen from eight mammalian species as a function of age. A curvilinear increase was modeled for all species, and the rate of increase correlated inversely with maximum life-span. Dietary restriction, a potent intervention associated with increased life-span, markedly inhibited glycoxidation rate in the rodent. On the assumption that collagen turnover rate is primarily influenced by the crosslinking due to glycoxidation, these results suggest that there is a progressive age-related deterioration of the process that controls the collagen glycoxidation rate. Thus, the ability to withstand damage due to glycoxidation and the Maillard reaction may be under genetic control.
Collapse
Affiliation(s)
- D R Sell
- Institute of Pathology, Case Western Reserve University, Cleveland, OH 44106, USA
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
35
|
Doria A, Warram JH, Krolewski AS. Genetic susceptibility to nephropathy in insulin-dependent diabetes: from epidemiology to molecular genetics. DIABETES/METABOLISM REVIEWS 1995; 11:287-314. [PMID: 8718493 DOI: 10.1002/dmr.5610110402] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- A Doria
- Section on Epidemiology and Genetics, Joslin Diabetes Center, Boston, MA 02215, USA
| | | | | |
Collapse
|