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Yang X, Zeng J, Xie K, Su S, Guo Y, Zhang H, Chen J, Ma Z, Xiao Z, Zhu P, Zheng S, Xu D, Zeng Q. Advanced glycation end product-modified low-density lipoprotein promotes pro-osteogenic reprogramming via RAGE/NF-κB pathway and exaggerates aortic valve calcification in hamsters. Mol Med 2024; 30:76. [PMID: 38840067 PMCID: PMC11155186 DOI: 10.1186/s10020-024-00833-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Accepted: 05/09/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND Advanced glycation end product-modified low-density lipoprotein (AGE-LDL) is related to inflammation and the development of atherosclerosis. Additionally, it has been demonstrated that receptor for advanced glycation end products (RAGE) has a role in the condition known as calcific aortic valve disease (CAVD). Here, we hypothesized that the AGE-LDL/RAGE axis could also be involved in the pathophysiological mechanism of CAVD. METHODS Human aortic valve interstitial cells (HAVICs) were stimulated with AGE-LDL following pre-treatment with or without interleukin 37 (IL-37). Low-density lipoprotein receptor deletion (Ldlr-/-) hamsters were randomly allocated to chow diet (CD) group and high carbohydrate and high fat diet (HCHFD) group. RESULTS AGE-LDL levels were significantly elevated in patients with CAVD and in a hamster model of aortic valve calcification. Our in vitro data further demonstrated that AGE-LDL augmented the expression of intercellular cell adhesion molecule-1 (ICAM-1), interleukin-6 (IL-6) and alkaline phosphatase (ALP) in a dose-dependent manner through NF-κB activation, which was attenuated by nuclear factor kappa-B (NF-κB) inhibitor Bay11-7082. The expression of RAGE was augmented in calcified aortic valves, and knockdown of RAGE in HAVICs attenuated the AGE-LDL-induced inflammatory and osteogenic responses as well as NF-κB activation. IL-37 suppressed inflammatory and osteogenic responses and NF-κB activation in HAVICs. The vivo experiment also demonstrate that supplementation with IL-37 inhibited valvular inflammatory response and thereby suppressed valvular osteogenic activities. CONCLUSIONS AGE-LDL promoted inflammatory responses and osteogenic differentiation through RAGE/NF-κB pathway in vitro and aortic valve lesions in vivo. IL-37 suppressed the AGE-LDL-induced inflammatory and osteogenic responses in vitro and attenuated aortic valve lesions in a hamster model of CAVD.
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Affiliation(s)
- Xi Yang
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Jingxin Zeng
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Kaiji Xie
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Shuwen Su
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Yuyang Guo
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Hao Zhang
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Jun Chen
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Zhuang Ma
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China
| | - Zezhou Xiao
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Peng Zhu
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Shaoyi Zheng
- Department of Cardiovascular Surgery, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China
| | - Dingli Xu
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China.
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China.
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China.
| | - Qingchun Zeng
- State Key Laboratory for Organ Failure Research, Department of Cardiology, Nanfang Hospital, Southern Medical University, 1838 Northern Guangzhou Ave, Guangzhou, 510515, China.
- Guangdong Provincial Key Laboratory of Shock and Microcirculation, Southern Medical University, Guangzhou, 510515, China.
- Bioland Laboratory (Guangzhou Regenerative Medicine and Health Guangdong Laboratory), Guangzhou, 510005, China.
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Uzelac T, Smiljanić K, Takić M, Šarac I, Oggiano G, Nikolić M, Jovanović V. The Thiol Group Reactivity and the Antioxidant Property of Human Serum Albumin Are Controlled by the Joint Action of Fatty Acids and Glucose Binding. Int J Mol Sci 2024; 25:2335. [PMID: 38397014 PMCID: PMC10889162 DOI: 10.3390/ijms25042335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/10/2024] [Accepted: 02/14/2024] [Indexed: 02/25/2024] Open
Abstract
The binding of ubiquitous serum ligands (free fatty acids) to human serum albumin (HSA) or its glycation can affect thiol group reactivity, thus influencing its antioxidant activity. The effects of stearic acid (SA) and glucose binding on HSA structural changes and thiol group content and reactivity were monitored by fluoroscopy and the Ellman method during a 14-day incubation in molar ratios to HSA that mimic pathophysiological conditions. Upon incubation with 5 mM glucose, HSA glycation was the same as HSA without it, in three different HSA:SA molar ratios (HSA:SA-1:1-2-4). The protective effect of SA on the antioxidant property of HSA under different glucose regimes (5-10-20 mM) was significantly affected by molar ratios of HSA:SA. Thiol reactivity was fully restored with 5-20 mM glucose at a 1:1 HSA:SA ratio, while the highest thiol content recovery was in pathological glucose regimes at a 1:1 HSA:SA ratio. The SA affinity for HSA increased significantly (1.5- and 1.3-fold, p < 0.01) with 5 and 10 mM glucose compared to the control. These results deepen the knowledge about the possible regulation of the antioxidant role of HSA in diabetes and other pathophysiological conditions and enable the design of future HSA-drug studies which, in turn, is important for clinicians when designing information-based treatments.
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Affiliation(s)
- Tamara Uzelac
- Department of Biochemistry and Centre of Excellence for Molecular and Food Sciences, University of Belgrade—Faculty of Chemistry (UBFC), Studentski trg 12-16, 11158 Belgrade, Serbia; (T.U.); (K.S.); (M.N.)
| | - Katarina Smiljanić
- Department of Biochemistry and Centre of Excellence for Molecular and Food Sciences, University of Belgrade—Faculty of Chemistry (UBFC), Studentski trg 12-16, 11158 Belgrade, Serbia; (T.U.); (K.S.); (M.N.)
| | - Marija Takić
- Centre of Research Excellence in Nutrition and Metabolism, Group for Nutrition and Metabolism, National Institute of Republic of Serbia, Institute for Medical Research, University of Belgrade, Tadeuša Košćuškog 1, 11000 Belgrade, Serbia; (M.T.); (I.Š.); (G.O.)
| | - Ivana Šarac
- Centre of Research Excellence in Nutrition and Metabolism, Group for Nutrition and Metabolism, National Institute of Republic of Serbia, Institute for Medical Research, University of Belgrade, Tadeuša Košćuškog 1, 11000 Belgrade, Serbia; (M.T.); (I.Š.); (G.O.)
| | - Gordana Oggiano
- Centre of Research Excellence in Nutrition and Metabolism, Group for Nutrition and Metabolism, National Institute of Republic of Serbia, Institute for Medical Research, University of Belgrade, Tadeuša Košćuškog 1, 11000 Belgrade, Serbia; (M.T.); (I.Š.); (G.O.)
| | - Milan Nikolić
- Department of Biochemistry and Centre of Excellence for Molecular and Food Sciences, University of Belgrade—Faculty of Chemistry (UBFC), Studentski trg 12-16, 11158 Belgrade, Serbia; (T.U.); (K.S.); (M.N.)
| | - Vesna Jovanović
- Department of Biochemistry and Centre of Excellence for Molecular and Food Sciences, University of Belgrade—Faculty of Chemistry (UBFC), Studentski trg 12-16, 11158 Belgrade, Serbia; (T.U.); (K.S.); (M.N.)
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Paar M, Fengler VH, Reibnegger G, Schnurr K, Waterstradt K, Schwaminger SP, Stauber RE, Oettl K. Determination of binding characteristics as a measure for effective albumin using different methods. Biochim Biophys Acta Gen Subj 2023:130427. [PMID: 37454915 DOI: 10.1016/j.bbagen.2023.130427] [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: 06/29/2023] [Revised: 07/13/2023] [Accepted: 07/13/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND & AIMS Transport functions of albumin are of clinical and pharmacological interest and are determined by albumin's properties like posttranslational modifications or bound ligands. Both are affected in pathological conditions and in therapeutic grade albumin solutions. The term effective albumin concentration was introduced as a measure of functionally intact albumin. Our aim was to evaluate the impact of ligands and modifications with different approaches as a measure of effective albumin. APPROACH & RESULTS We used a spin labelled fatty acid and dansylsarcosine to characterize binding properties of albumin i) prepared from plasma of patients and healthy control donors, ii) measured directly out of plasma, iii) research grade albumin, iv) in vitro modified albumin, and v) therapeutic infusion solutions before and after removal of stabilizers. Bilirubin is the main determinant for binding function in patients' albumin. In in vitro prepared albumin bound fatty acids correlated with impaired binding. Human nonmercaptalbumin1, not human nonmercaptalbumin2, showed reduced binding properties. Binding and transport function of therapeutic albumin was severely impaired and restored by filtration. Glycation of research grade albumin had no effect on the binding of dansylsarcosine and only a minor effect on fatty acid binding. CONCLUSIONS Our results suggest that effective albumin -in terms of binding properties- is primarily determined by bound ligands and only to a minor extent by posttranslational modifications. Characterizing albumin directly from plasma better reflects the physiological situation whereas in the case of therapeutic grade albumin stabilizers should be removed to make its binding properties accessible.
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Affiliation(s)
- Margret Paar
- Medical University of Graz, Otto Loewi Research Center, Division of Medicinal Chemistry, Neue Stiftingtalstrasse 6, 8010, Graz, Austria
| | - Vera H Fengler
- University of Graz, Institute of Molecular Biosciences, Humboldtstrasse 50, 8010, Graz, Austria
| | - Gilbert Reibnegger
- Medical University of Graz, Otto Loewi Research Center, Division of Medicinal Chemistry, Neue Stiftingtalstrasse 6, 8010, Graz, Austria
| | - Kerstin Schnurr
- MedInnovation GmbH, Wissenschaftsstandort Berlin-Adlershof (WISTA), Groß-Berliner Damm 151, 12487 Berlin, Germany
| | - Katja Waterstradt
- MedInnovation GmbH, Wissenschaftsstandort Berlin-Adlershof (WISTA), Groß-Berliner Damm 151, 12487 Berlin, Germany
| | - Sebastian P Schwaminger
- Medical University of Graz, Otto Loewi Research Center, Division of Medicinal Chemistry, Neue Stiftingtalstrasse 6, 8010, Graz, Austria; BioTechMed-Graz, Mozartgasse 12, 8010 Graz, Austria
| | - Rudolf E Stauber
- Medical University of Graz, Department of Internal Medicine, Division of Gastroenterology and Hepatology, Auenbruggerplatz 15, 8036 Graz, Austria
| | - Karl Oettl
- Medical University of Graz, Otto Loewi Research Center, Division of Medicinal Chemistry, Neue Stiftingtalstrasse 6, 8010, Graz, Austria.
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Li S, Gao G, Wu F, Liu D, Zhao H, Ke J, Liu Y, Li F, Li J, Chen Z, Tang Z, Bai L, Zhang J, Zheng W, Chen X. Programmed cell death protein 4 deficiency suppresses foam cell formation by activating autophagy in advanced glycation end-product low-density lipoprotein-induced macrophages. J Cell Biochem 2019; 120:7689-7700. [PMID: 30426537 DOI: 10.1002/jcb.28043] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 10/22/2018] [Indexed: 01/24/2023]
Abstract
BACKGROUND Advanced glycation end-product is a modified form of low-density lipoprotein (AGE-LDL) and accelerates atherosclerosis through undefined mechanisms. Programmed cell death protein 4 (PDCD4), a transcriptional regulator, plays an important role in the regulation of autophagy. The aim of the present study was to investigate the role of PDCD4 involved in AGE-LDL-induced foam cell formation. METHODS The characterization of AGE-LDL was measured by the thiobarbituric assay and agarose gel electrophoresis in vitro. RAW264.7, THP-1 cell line and primary peritoneal macrophages of mice were transfected with shPDCD4 plasmid AGE-LDL-induced foam cell formation was stained by Oil Red, and the levels of autophagy and apoptosis were determined by Western blot analysis. Autophagosome was observed with immunofluorescence microscopy. Mitochondrial membrane potential and autophagic flux were assessed by flow cytometry. RESULTS AGE modification resulted in significant reduction of absorbance shown by thiobarbituric assay and augmentation of electrophoresis mobility. Further studies suggest that macrophages exposed AGE-LDL triggered autophagy in the early stage of foam cell formation. PDCD4 deficiency enhanced lipoautophagy but inhibited apoptosis and mitochondria dysfunction. Previous studies have been reported that autophagy is an adaptive response might prevent lesional macrophage apoptosis. In our study, we found PDCD4 deficiency attenuated apoptosis and AGE-LDL-induced foam cell formation relied on increased autophagy. CONCLUSION Our data revealed that PDCD4 deficiency can facilitate autophagy and benefit for AGE-LDL-induced foam cell formation.
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Affiliation(s)
- Shan Li
- Department of Integrated Medicine, Affiliated Dongfeng Hospital, Hubei University of Medicine, Shiyan, China.,Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Guangdong Gao
- Department of Biological Sciences, School of Biomedical Engineering, Hubei University of Medicine, Shiyan, China
| | - Fuyun Wu
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Dan Liu
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Hongyan Zhao
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Jing Ke
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Ying Liu
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Fei Li
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Jian Li
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Zongyun Chen
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Zhiming Tang
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Lei Bai
- Department of Biological Sciences, School of Biomedical Engineering, Hubei University of Medicine, Shiyan, China
| | - Jinxuan Zhang
- Department of biochemistry, Institute of Basic Medical Sciences, Hubei University of Medicine, Shiyan, China
| | - Wei Zheng
- Department of Integrated Medicine, Affiliated Dongfeng Hospital, Hubei University of Medicine, Shiyan, China
| | - Xin Chen
- Department of Integrated Medicine, Affiliated Dongfeng Hospital, Hubei University of Medicine, Shiyan, China
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5
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Frahm GE, Smith DGS, Kane A, Lorbetskie B, Cyr TD, Girard M, Johnston MJW. Determination of supplier-to-supplier and lot-to-lot variability in glycation of recombinant human serum albumin expressed in Oryza sativa. PLoS One 2014; 9:e109893. [PMID: 25299339 PMCID: PMC4192584 DOI: 10.1371/journal.pone.0109893] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 09/06/2014] [Indexed: 01/11/2023] Open
Abstract
The use of different expression systems to produce the same recombinant human protein can result in expression-dependent chemical modifications (CMs) leading to variability of structure, stability and immunogenicity. Of particular interest are recombinant human proteins expressed in plant-based systems, which have shown particularly high CM variability. In studies presented here, recombinant human serum albumins (rHSA) produced in Oryza sativa (Asian rice) (OsrHSA) from a number of suppliers have been extensively characterized and compared to plasma-derived HSA (pHSA) and rHSA expressed in yeast (Pichia pastoris and Saccharomyces cerevisiae). The heterogeneity of each sample was evaluated using size exclusion chromatography (SEC), reversed-phase high-performance liquid chromatography (RP-HPLC) and capillary electrophoresis (CE). Modifications of the samples were identified by liquid chromatography-mass spectrometry (LC-MS). The secondary and tertiary structure of the albumin samples were assessed with far U/V circular dichroism spectropolarimetry (far U/V CD) and fluorescence spectroscopy, respectively. Far U/V CD and fluorescence analyses were also used to assess thermal stability and drug binding. High molecular weight aggregates in OsrHSA samples were detected with SEC and supplier-to-supplier variability and, more critically, lot-to-lot variability in one manufactures supplied products were identified. LC-MS analysis identified a greater number of hexose-glycated arginine and lysine residues on OsrHSA compared to pHSA or rHSA expressed in yeast. This analysis also showed supplier-to-supplier and lot-to-lot variability in the degree of glycation at specific lysine and arginine residues for OsrHSA. Both the number of glycated residues and the degree of glycation correlated positively with the quantity of non-monomeric species and the chromatographic profiles of the samples. Tertiary structural changes were observed for most OsrHSA samples which correlated well with the degree of arginine/lysine glycation. The extensive glycation of OsrHSA from multiple suppliers may have further implications for the use of OsrHSA as a therapeutic product.
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Affiliation(s)
- Grant E. Frahm
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Daryl G. S. Smith
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Anita Kane
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Barry Lorbetskie
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Terry D. Cyr
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Michel Girard
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario, Canada
| | - Michael J. W. Johnston
- Centre for Biologics Evaluation, Biologics and Genetic Therapies Directorate, Health Canada, Ottawa, Ontario, Canada
- * E-mail:
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6
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. P, Anthony MWP, Rahman NA, . N, . S. Hypoglycemic and Antioxidative Effects of Pomegranate (Punica granatum L.) Juice in Streptozotocin Induced Diabetic Rats. ACTA ACUST UNITED AC 2014. [DOI: 10.3923/pjn.2014.567.572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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7
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Cohen MP. Clinical, pathophysiological and structure/function consequences of modification of albumin by Amadori-glucose adducts. Biochim Biophys Acta Gen Subj 2013; 1830:5480-5. [PMID: 23624335 DOI: 10.1016/j.bbagen.2013.04.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2013] [Revised: 04/16/2013] [Accepted: 04/17/2013] [Indexed: 11/25/2022]
Abstract
BACKGROUND The nonenzymatic condensation of glucose with albumin results in the formation of albumin modified by Amadori glucose adducts, the principal form in which glycated albumin exists in vivo. SCOPE OF REVIEW This review focuses on (a) the utility of measurement of Amadori-modified glycated albumin (AGA) as a biomarker in diabetes, where elevated levels attend the hyperglycemic state; (b) the role of AGA as a causal factor in the pathogenesis of complications of diabetes; (c) effects on transport properties; and (d) structural and functional consequences of the modification of albumin by Amadori glucose adducts. It does not discuss counterparts with respect to Advanced Glycation Endproducts (AGE), which may be found in other publications. MAJOR CONCLUSIONS Nonenzymatic glycation of albumin, which is increased in diabetes, has clinical relevance and pathophysiologic importance, with ramifications for the management of this disease, the development of its complications, and the transport of endogenous and exogenous ligands. GENERAL SIGNIFICANCE Appreciation of the manifold consequences of AGA has afforded new avenues for assessing clinical management of diabetes, awareness of the impact of nonenzymatic glycation on albumin biology, insights into the pathogenesis of vascular complications of diabetes, and avenues of investigation of and intervention strategies for these complications. This article is part of a Special Issue on albumin. This article is part of a Special Issue entitled Serum Albumin.
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Affiliation(s)
- Margo P Cohen
- Glycadia, Inc., 1880 JFK Boulevard, Suite 200, Philadelphia, PA 19103, United States.
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8
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Frahm GE, Cyr TD, Smith DGS, Walrond LD, Johnston MJW. Investigation of the Differences in Thermal Stability of Two Recombinant Human Serum Albumins with 1,2-Dipalmitoyl-sn-glycero-3-phosphocholine Liposomes by UV Circular Dichroism Spectropolarimetry. J Phys Chem B 2012; 116:4661-70. [DOI: 10.1021/jp2125729] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Grant E. Frahm
- Centre for
Vaccine Evaluation, Biologics and Genetic
Therapies Directorate, Health Canada, 251
Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
| | - Terry D. Cyr
- Centre for
Vaccine Evaluation, Biologics and Genetic
Therapies Directorate, Health Canada, 251
Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
| | - Daryl G. S. Smith
- Centre for
Vaccine Evaluation, Biologics and Genetic
Therapies Directorate, Health Canada, 251
Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
| | - Lisa D. Walrond
- Centre for
Vaccine Evaluation, Biologics and Genetic
Therapies Directorate, Health Canada, 251
Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
| | - Michael J. W. Johnston
- Centre for
Vaccine Evaluation, Biologics and Genetic
Therapies Directorate, Health Canada, 251
Sir Frederick Banting Driveway, Ottawa, ON K1A 0K9, Canada
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9
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Human serum albumin: from bench to bedside. Mol Aspects Med 2011; 33:209-90. [PMID: 22230555 DOI: 10.1016/j.mam.2011.12.002] [Citation(s) in RCA: 1195] [Impact Index Per Article: 91.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2011] [Accepted: 12/21/2011] [Indexed: 02/07/2023]
Abstract
Human serum albumin (HSA), the most abundant protein in plasma, is a monomeric multi-domain macromolecule, representing the main determinant of plasma oncotic pressure and the main modulator of fluid distribution between body compartments. HSA displays an extraordinary ligand binding capacity, providing a depot and carrier for many endogenous and exogenous compounds. Indeed, HSA represents the main carrier for fatty acids, affects pharmacokinetics of many drugs, provides the metabolic modification of some ligands, renders potential toxins harmless, accounts for most of the anti-oxidant capacity of human plasma, and displays (pseudo-)enzymatic properties. HSA is a valuable biomarker of many diseases, including cancer, rheumatoid arthritis, ischemia, post-menopausal obesity, severe acute graft-versus-host disease, and diseases that need monitoring of the glycemic control. Moreover, HSA is widely used clinically to treat several diseases, including hypovolemia, shock, burns, surgical blood loss, trauma, hemorrhage, cardiopulmonary bypass, acute respiratory distress syndrome, hemodialysis, acute liver failure, chronic liver disease, nutrition support, resuscitation, and hypoalbuminemia. Recently, biotechnological applications of HSA, including implantable biomaterials, surgical adhesives and sealants, biochromatography, ligand trapping, and fusion proteins, have been reported. Here, genetic, biochemical, biomedical, and biotechnological aspects of HSA are reviewed.
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Foo JP, Mantzoros CS. The quest for the perfect biomarker of long-term glycemia: new studies, new trials and tribulations. Metabolism 2011; 60:1651-4. [PMID: 21820137 DOI: 10.1016/j.metabol.2011.06.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 06/22/2011] [Indexed: 10/17/2022]
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