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Farrugia A, Mori F. Therapeutic solutions of human albumin - The possible effect of process-induced molecular alterations on clinical efficacy and safety. J Pharm Sci 2022; 111:1292-1308. [PMID: 35276228 DOI: 10.1016/j.xphs.2022.03.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Revised: 03/04/2022] [Accepted: 03/04/2022] [Indexed: 12/14/2022]
Abstract
Human albumin solutions were developed as therapeutic during the Second World War to address blood loss due to battlefield injury. This indication was based on the recognition that albumin provided most of the oncotic capacity of human plasma. For the succeeding sixty years, this formed the basis for the use of albumin in traumatology and emergency medicine. In more recent times, the pharmacological properties arising from albumin's complex structure have become a focus of attention by clinical researchers. In particular, albumin, through anti-inflammatory and anti-oxidant properties, has been proposed as an agent for the treatment of sepsis, cirrhosis and other inflammatory states. Some evidence for these indications has accrued from a number of small clinical trials and observational studies. These studies have not been confirmed in other large trials. Together with other investigators, we have shown that the process of plasma fractionation results in alterations in the structure of albumin, including those parts of the molecule involved in anti-oxidant and anti-inflammatory effects. Albumin products from diverse manufacturers show heterogeneity in their ability to address these effects. In this article, we review the historical development of albumin solutions, pointing out the variations in fractionation chemistries which different manufacturers have adopted. We suggest ways by which the manufacturing processes have contributed to variations in the physico-chemical properties of molecule. We review the outcomes of clinical studies assessing the role of albumin in ameliorating conditions such as sepsis and cirrhosis, and we speculate as to the extent which heterogeneity in the products may have contributed to variable clinical outcomes. Finally, we argue for a change in the perception of the plasma product industry and its regulatory overseers. Historically, albumin has been viewed as a generic commodity, with different preparations being interchangeable in their clinical application. We suggest that this implied biosimilarity is not necessarily applicable for different albumin solutions. The use of albumin, in indications other than its historical role as a plasma expander, can only be validated by clinical investigation of each separate albumin product.
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Affiliation(s)
- Albert Farrugia
- Faculty of Health and Medical Sciences, The University of Western Australia, 35 Stirling Highway, Crawley WA 6009, Perth, Australia.
| | - Filippo Mori
- Kedrion S.p.A., Research and Innovation Department, Via di Fondovalle, Loc., Bolognana 55027, Gallicano (LU), Italy
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Rabbani G, Ahn SN. Review: Roles of human serum albumin in prediction, diagnoses and treatment of COVID-19. Int J Biol Macromol 2021; 193:948-955. [PMID: 34673106 PMCID: PMC8520831 DOI: 10.1016/j.ijbiomac.2021.10.095] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/03/2021] [Accepted: 10/13/2021] [Indexed: 12/17/2022]
Abstract
The severe acute respiratory syndrome corona virus-2 (SARS-CoV-2) keeps on destroying normal social integrity worldwide, bringing about extraordinary medical services, cultural and financial interruption. Individuals with diabetes have been demonstrated to be at higher risk of complications and even death when exposed to SARS-CoV-2. Regardless of pandemic scale infection, there is presently limited comprehension on the potential impact of SARS-CoV-2 on individuals with diabetes. Human serum albumin (HSA) is the most abundant circulating plasma protein in human serum and attracted more interest from researchers because most susceptible to non-enzymatic glycation reactions. Albumin down-regulates the expression of ACE2 that is the target receptor of COVID-19. Hypoalbuminemia, coagulopathy, and vascular disease have been connected in COVID-19 and appear to predict outcomes independent of age and morbidity. This review discusses the most recent evidence that the ACE/ACE2 ratio could influence by human serum albumin both the susceptibility of individuals to SARS-CoV-2 infection and the outcome of the COVID-19 disease.
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Affiliation(s)
- Gulam Rabbani
- Nano Diagnostics & Devices (NDD), B-312 IT-Medical Fusion Center, 350-27 Gumidae-ro, Gumi-si, Gyeongbuk 39253, Republic of Korea.
| | - Saeyoung Nate Ahn
- Nano Diagnostics & Devices (NDD), B-312 IT-Medical Fusion Center, 350-27 Gumidae-ro, Gumi-si, Gyeongbuk 39253, Republic of Korea; Fuzbien Technology Institute, 13 Taft Court, Rockville, MD 20850, USA.
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Rahmani-Kukia N, Abbasi A, Pakravan N, Hassan ZM. Measurement of oxidized albumin: An opportunity for diagnoses or treatment of COVID-19. Bioorg Chem 2020; 105:104429. [PMID: 33161256 PMCID: PMC7598366 DOI: 10.1016/j.bioorg.2020.104429] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/10/2020] [Accepted: 10/23/2020] [Indexed: 12/19/2022]
Abstract
Human serum albumin (HSA) as the most abundant protein in human blood plasma, can be a good indicator for evaluating severity of some diseases in the clinic. HSA can be find in two forms: reduced albumin (human mercaptalbumin (HMA)) and oxidized albumin (human non-mercaptalbumin (HNA)). The rate of oxidized albumin to total albumin can be enhanced in multiple diseases. Increase in HNA level have been demonstrated in liver, diabetes plus fatigue and coronary artery diseases. In liver patients, this enhancement can reach to 50-200 percent which can then lead to bacterial/viral infections and eventually death in severe conditions. Due to the induction of cytokine storm, we can say that the level of HNA in serum of coronavirus disease 2019 (COVID-19) patients may be a positive predictor of mortality, especially in patients with underlying diseases such as cardiovascular disease (CVD), diabetes, aging and other inflammatory diseases. We suggest that checking oxidized albumin in COVID-19 patients may provide new therapeutic and diagnostic opportunities to better combat COVID-19.
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Affiliation(s)
- Nasim Rahmani-Kukia
- Department of Biochemistry, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ardeshir Abbasi
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
| | - Nafiseh Pakravan
- Department of Immunology, Medical School, Alborz University of Medical Sciences, Karaj, Iran
| | - Zuhair Mohammad Hassan
- Department of Immunology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Prantner D, Nallar S, Vogel SN. The role of RAGE in host pathology and crosstalk between RAGE and TLR4 in innate immune signal transduction pathways. FASEB J 2020; 34:15659-15674. [PMID: 33131091 DOI: 10.1096/fj.202002136r] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Revised: 10/07/2020] [Accepted: 10/13/2020] [Indexed: 12/15/2022]
Abstract
Although the innate immune receptor protein, Receptor for Advanced Glycation End products (RAGE), has been extensively studied, there has been renewed interest in RAGE for its potential role in sepsis, along with a host of other inflammatory diseases of chronic, noninfectious origin. In contrast to other innate immune receptors, for example, Toll-like receptors (TLRs), that recognize ligands derived from pathogenic organisms that are collectively known as "pathogen-associated molecular patterns" (PAMPs) or host-derived "damage-associated molecular patterns" (DAMPs), RAGE has been shown to recognize a broad collection of DAMPs exclusively. Historically, these DAMPs have been shown to be pro-inflammatory in nature. Early studies indicated that the adaptor molecule, MyD88, might be important for this change. More recent studies have explored further the mechanisms underlying this inflammatory change. Overall, the newer results have shown that there is extensive crosstalk between RAGE and TLRs. The three canonical RAGE ligands, Advanced Glycation End products (AGEs), HMGB1, and S100 proteins, have all been shown to activate both TLRs and RAGE to varying degrees in order to induce inflammation in in vitro models. As with any field that delves deeply into innate signaling, obstacles of reagent purity may be a cause of some of the discrepancies in the literature, and we have found that commercial antibodies that have been widely used exhibit a high degree of nonspecificity. Nonetheless, the weight of published evidence has led us to speculate that RAGE may be physically interacting with TLRs on the cell surface to elicit inflammation via MyD88-dependent signaling.
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Affiliation(s)
- Daniel Prantner
- Department of Microbiology and Immunology, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Shreeram Nallar
- Institute of Human Virology, School of Medicine, University of Maryland, Baltimore, MD, USA
| | - Stefanie N Vogel
- Department of Microbiology and Immunology, School of Medicine, University of Maryland, Baltimore, MD, USA
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Aldecoa C, Llau JV, Nuvials X, Artigas A. Role of albumin in the preservation of endothelial glycocalyx integrity and the microcirculation: a review. Ann Intensive Care 2020; 10:85. [PMID: 32572647 PMCID: PMC7310051 DOI: 10.1186/s13613-020-00697-1] [Citation(s) in RCA: 90] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Accepted: 06/05/2020] [Indexed: 12/11/2022] Open
Abstract
The endothelial glycocalyx comprises a complex layer of membrane-bound proteoglycans, secreted glycosaminoglycans, glycoproteins, glycolipids and bound plasma proteins such as albumin and antithrombin associated with the endothelial surface. The glycocalyx plays an important role in vascular homeostasis, regulating vascular permeability and cell adhesion, and acts as a mechanosensor for hemodynamic shear stresses; it also has antithrombotic and anti-inflammatory functions. Plasma proteins such as albumin are physiologically bound within the glycocalyx, thus contributing to stability of the layer. Albumin is the major determinant of plasma colloid osmotic pressure. In addition, albumin transports sphingosine-1-phosphate which has protective endothelial effects, acts as a free radical scavenger, and has immunomodulatory and anti-inflammatory effects. This review examines the physiological function of the endothelial glycocalyx and the role of human albumin in preserving glycocalyx integrity and the microcirculation.
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Affiliation(s)
- Cesar Aldecoa
- Department of Anaesthesiology and Surgical Critical Care, Hospital Universitario Rio Hortega, c/Dulzaina 2, 47012, Valladolid, Spain
| | - Juan V Llau
- Department of Anaesthesiology and Surgical Critical Care, Hospital Universitario Dr. Peset, Universitat de València, c/Gaspar Aguilar 90, 46017, Valencia, Spain
| | - Xavier Nuvials
- Intensive Care Unit, and SODIR Research Group, Vall d'Hebron Institut de Recerca (VHIR), Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Passeig Vall d'Hebron 119-129, 08035, Barcelona, Spain
| | - Antonio Artigas
- Critical Care Center, Corporacion Sanitaria Universitaria Parc Tauli, CIBER Enfermedades Respiratorias, Autonomous University of Barcelona, Parc Tauli 1, 08028, Sabadell, Spain.
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Coz Yataco AO, Flannery AH, Simpson SQ. COUNTERPOINT: Should Intravenous Albumin Be Used for Volume Resuscitation in Severe Sepsis/Septic Shock? No. Chest 2018; 149:1368-70. [PMID: 27287567 DOI: 10.1016/j.chest.2016.03.050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Accepted: 03/29/2016] [Indexed: 11/24/2022] Open
Affiliation(s)
- Angel O Coz Yataco
- Division of Pulmonary, Critical Care and Sleep Medicine, University of Kentucky, Lexington, Kentucky.
| | | | - Steven Q Simpson
- Division of Pulmonary and Critical Care, University of Kansas, Kansas City, KS
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Furuhashi M, Hatasa Y, Kawamura S, Shibata T, Akagawa M, Uchida K. Identification of Polyphenol-Specific Innate Epitopes That Originated from a Resveratrol Analogue. Biochemistry 2017; 56:4701-4712. [PMID: 28796948 DOI: 10.1021/acs.biochem.7b00409] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Polyphenols have received a significant amount of attention in disease prevention because of their unique chemical and biological properties. However, the underlying molecular mechanism for their beneficial effects remains unclear. We have now identified a polyphenol as a source of innate epitopes detected in natural IgM and established a unique gain-of-function mechanism in the formation of innate epitopes by polyphenol via the polymerization of proteins. Upon incubation with bovine serum albumin (BSA) under physiological conditions, several polyphenols converted the protein into the innate epitopes recognized by the IgM Abs. Interestingly, piceatannol, a naturally occurring hydroxylated analogue of a red wine polyphenol, resveratrol, mediated the modification of BSA, whose polymerized form was specifically recognized by the IgMs. The piceatannol-mediated polymerization of the protein was associated with the formation of a lysine-derived cross-link, dehydrolysinonorleucine. In addition, an oxidatively deaminated product, α-aminoadipic semialdehyde, was detected as a potential precursor for the cross-link in the piceatannol-treated BSA, suggesting that the polymerization of the protein might be mediated by the oxidation of a lysine residue by piceatannol followed by a Schiff base reaction with the ε-amino group of an unoxidized lysine residue. The results of this study established a novel mechanism for the formation of innate epitopes by small dietary molecules and support the notion that many of the beneficial effects of polyphenols could be attributed, at least in part, to their lysyl oxidase-like activity. They also suggest that resveratrol may have beneficial effects on human health because of its conversion to piceatannol.
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Affiliation(s)
- Mai Furuhashi
- Graduate School of Bioagricultural Sciences, Nagoya University , Nagoya 464-8601, Japan
| | - Yukinori Hatasa
- Graduate School of Bioagricultural Sciences, Nagoya University , Nagoya 464-8601, Japan
| | - Sae Kawamura
- Graduate School of Bioagricultural Sciences, Nagoya University , Nagoya 464-8601, Japan
| | - Takahiro Shibata
- Graduate School of Bioagricultural Sciences, Nagoya University , Nagoya 464-8601, Japan.,PRESTO, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan
| | - Mitsugu Akagawa
- Department of Biological Chemistry, Division of Applied Life Science, Graduate School of Life and Environmental Sciences, Osaka Prefecture University , Sakai 599-8531, Japan
| | - Koji Uchida
- Graduate School of Bioagricultural Sciences, Nagoya University , Nagoya 464-8601, Japan.,Laboratory of Food Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo , Tokyo 113-8657, Japan
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The Course of Skin and Serum Biomarkers of Advanced Glycation Endproducts and Its Association with Oxidative Stress, Inflammation, Disease Severity, and Mortality during ICU Admission in Critically Ill Patients: Results from a Prospective Pilot Study. PLoS One 2016; 11:e0160893. [PMID: 27529340 PMCID: PMC4986948 DOI: 10.1371/journal.pone.0160893] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 07/26/2016] [Indexed: 12/31/2022] Open
Abstract
Background Advanced glycation end products (AGEs) have been implicated in multiple organ failure, predominantly via their cellular receptor (RAGE) in preclinical studies. Little is known about the time course and prognostic relevance of AGEs in critically ill human patients, including those with severe sepsis. Objective 1) To explore the reliability of Skin Autofluorescence (AF) as an index of tissue AGEs in ICU patients, 2) to compare its levels to healthy controls, 3) to describe the time course of AGEs and influencing factors during ICU admission, and 4) to explore their association with disease severity, outcome, and markers of oxidative stress and inflammation. Methods Skin AF, serum N"-(carboxyethyl)lysine (CEL), N"-(carboxymethyl)lysine (CML), and soluble RAGE (sRAGE) were serially measured for a maximum of 7 days in critically ill ICU patients with multiple organ failure and compared to age-matched healthy controls. Correlations with (changes in) clinical parameters of disease severity, LDL dienes, and CRP were studied and survival analysis for in-hospital mortality was performed. Results Forty-five ICU patients (age: 59±15 years; 60% male), and 37 healthy controls (59±14; 68%) were included. Skin AF measurements in ICU patients were reproducible (CV right-left arm: 13%, day-to-day: 10%), with confounding effects of skin reflectance and plasma bilirubin levels. Skin AF was higher in ICU patients vs healthy controls (2.7±0.7 vs 1.8±0.3 au; p<0.001). Serum CEL (23±10 vs, 16±3 nmol/gr protein; p<0.001), LDL dienes (19 (15–23) vs. 9 (8–11) μmol/mmol cholesterol; <0.001), and sRAGE (1547 (998–2496) vs. 1042 (824–1388) pg/ml; p = 0.003) were significantly higher in ICU patients compared to healthy controls, while CML was not different (27 (20–39) vs 29 (25–33) nmol/gr protein). While CRP and LDL dienes decreased significantly, Skin AF and serum AGEs and sRAGE did not change significantly during the first 7 days of ICU admission. CML and CEL were strongly correlated with SOFA scores and CML above the median at baseline was associated with increased risk for mortality (Hazard ratio 3.3 (1.3–8.3); p = 0.01). All other markers did not correlate with disease severity and did not predict mortality. Conclusions This study demonstrates that markers for the AGE-RAGE axis are elevated in critically ill patients compared to healthy controls but remain stable for at least 7 days despite clearly fading inflammation and oxidative stress. Circulating AGEs may be associated with disease severity and outcome. Further research should be conducted to elucidate the role of the AGE-RAGE axis in the exaggerated inflammatory response leading to multiple organ failure and death, and whether or not this may be a target for treatment.
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9
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Cellular signalling of the receptor for advanced glycation end products (RAGE). Cell Signal 2013; 25:2185-97. [DOI: 10.1016/j.cellsig.2013.06.013] [Citation(s) in RCA: 347] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Revised: 06/15/2013] [Accepted: 06/25/2013] [Indexed: 01/03/2023]
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Feng L, Zhu MM, Zhang MH, Wang RS, Tan XB, Song J, Ding SM, Jia XB, Hu SY. Protection of glycyrrhizic acid against AGEs-induced endothelial dysfunction through inhibiting RAGE/NF-κB pathway activation in human umbilical vein endothelial cells. JOURNAL OF ETHNOPHARMACOLOGY 2013; 148:27-36. [PMID: 23528363 DOI: 10.1016/j.jep.2013.03.035] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Revised: 03/07/2013] [Accepted: 03/08/2013] [Indexed: 05/25/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Licorice (Glycyrrhiza uralensis roots) is used as a traditional medicine for the treatment of diabetes mellitus and its vascular complications. Glycyrrhizic acid (GA, also known as Glycyrrhizin), a triterpenoid saponin glycoside, is considered to be a bioactive component in Licorice and is beneficial to diabetic vascular complications. AIM OF STUDY The present study was conducted to evaluate the potential protective activities on AGEs-induced endothelial dysfunction, including anti-apoptosis, antioxidant stress and anti-proinflammatory responses, and explore the underlying mechanism. MATERIALS AND METHODS Human umbilical vein endothelial cells (HUVECs) were incubated and pre-treated with GA (10(-9)-10(-6)M) or RAGE-Ab (5μg/ml) in the presence or absence of 200μg/ml AGEs. AO/EB fluorescence staining assay was performed to evaluate anti-apoptosis activity. The superoxide dismutase (SOD) activity and malondialdehyde (MDA) level in cell supernatant were detected by kits while the intracellular reactive oxygen species (ROS) generation was determined by 2,7-dichlorodihydrofluorescin diacetate (DCFH-DA) kit. Immunocytochemistry analysis was designed to determine transforming growth factor beta1(TGF-β1) protein expression while immunofluorescence analysis for RAGE and NF-kB. The protein expressions of TGF-β1, RAGE and NF-kB were analyzed by Western blot analysis. RESULTS Pretreatment with GA at a concentration of 10(-8)-10(-6)M significantly reduced the AGEs-induced apoptosis in HUVECs. GA significantly increased antioxidant enzyme SOD activity and decreased peroxide degradation product MDA level in a dose-dependent manner. Furthermore, GA also remarkably inhibited the overgeneration of AGEs-induced ROS. Both immunocytochemistry analysis and western blot analysis showed that GA significantly decreased the protein expression of poinflammatory cytokine TGF-β1 in a similar manner which RAGE-Ab did. Additionally, AGEs-induced RAGE and NF-kB protein expressions were down-regulated significantly by the pretreatment with GA or RAGE-Ab. CONCLUSION These findings provide evidences that GA possesses protective activity on AGEs-induced endothelial dysfunction, including anti-apoptosis, anti-inflammation and antioxidant stress, via inhibiting RAGE/NF-kB pathway. GA might be an alternative for the prevention and treatment of diabetic vascular complications in an appropriate dosage.
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Affiliation(s)
- Liang Feng
- Key Laboratory of Delivery Systems of Chinese Meteria Medica, Jiangsu Provincial Academy of Chinese Medicine, Jiangsu, Nanjing 210028, China.
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Zeng L, Zhang AQ, Gu W, Zhou J, Zhang LY, Du DY, Zhang M, Wang HY, Yan J, Yang C, Jiang JX. Identification of haplotype tag single nucleotide polymorphisms within the receptor for advanced glycation end products gene and their clinical relevance in patients with major trauma. Crit Care 2012; 16:R131. [PMID: 22827914 PMCID: PMC3580716 DOI: 10.1186/cc11436] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2012] [Revised: 06/13/2012] [Accepted: 07/24/2012] [Indexed: 01/10/2023] Open
Abstract
INTRODUCTION The receptor for advanced glycation end products (RAGE) has been considered as one of the major pattern recognition receptors and plays an important role in the development of sepsis and multiple organ dysfunction in critical illnesses. Although genetic variants of the RAGE gene have been shown to be well associated with susceptibility to some inflammatory diseases, little is known about their clinical relevance in the development of sepsis in critical ill patients. METHODS Four genetic variants were selected from the entire RAGE gene and genotyped using pyrosequencing and polymerase chain reaction-length polymorphism methods. Association studies were performed in two independent Chinese Han populations. RESULTS Among the four genetic variants, only the rs1800625 polymorphism was significantly associated with sepsis morbidity rate and multiple organ dysfunction (MOD) scores in patients with major trauma both in Chongqing (n = 496) and Zhejiang (n = 232) districts, respectively. Results from ex vivo responsiveness of peripheral blood leukocytes indicated that the rs1800625 polymorphism was well associated with decreased production of TNFα. In addition, the rs1800625 polymorphism could significantly inhibit the promoter activities of the RAGE gene. CONCLUSIONS The rs1800625 polymorphism is a functional variant, which might be used as a relevant risk estimate for the development of sepsis and multiple organ dysfunction syndrome in patients with major trauma.
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Affiliation(s)
- Ling Zeng
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - An-qiang Zhang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - Wei Gu
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - Jian Zhou
- Department of Traumatic Surgery, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - Lian-yang Zhang
- Department of Traumatic Surgery, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - Ding-yuan Du
- Chongqing Emergency Medical Center, Jiankang Road, Yuzhong District, Chongqing, 400042, China
| | - Mao Zhang
- Department of Emergency Medical Center, the Second Affiliated Hospital, Zhejiang University, Jiefang Road 88, Zhejiang, 310009, China
| | - Hai-yan Wang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - Jun Yan
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - Ce Yang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
| | - Jian-xin Jiang
- State Key Laboratory of Trauma, Burns and Combined Injury, Institute of Surgery Research, Daping Hospital, Third Military Medical University, Changjiang Road 10, Yuzhong District, Chongqing, 400042, China
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Advanced glycation end products contribute to the immunogenicity of IFN-β pharmaceuticals. J Allergy Clin Immunol 2011; 129:855-858.e6. [PMID: 22154379 DOI: 10.1016/j.jaci.2011.10.035] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2011] [Revised: 10/25/2011] [Accepted: 10/28/2011] [Indexed: 12/29/2022]
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13
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Lorenzi R, Andrades ME, Bortolin RC, Nagai R, Dal-Pizzol F, Moreira JCF. Glycolaldehyde induces oxidative stress in the heart: a clue to diabetic cardiomyopathy? Cardiovasc Toxicol 2011; 10:244-9. [PMID: 20632216 DOI: 10.1007/s12012-010-9083-x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Cardiovascular complications account for 80% of the mortality related to diabetes mellitus. Hyperglycemia is believed to be the major culprit of angiopathy and cardiomyopathy. High glucose levels and oxidative stress cause elevation of Advanced Glycation End-products that are known to contribute to diabetic complications and correlate with many diseases. However, there are few reports describing the effects of glycating agents other than glucose. Here, we aimed to evaluate the effects of glycolaldehyde (GA) on oxidative stress parameters in the heart of Wistar rats. Male Wistar rats received a single injection of GA (10, 50 or 100 mg/Kg) and were sacrificed 6, 12 or 24 h after injection. As indexes of oxidative stress, we quantified protein carbonylation, lipid peroxidation and total reduced thiols. The activities of superoxide dismutase, catalase and glyoxalase I were assayed. Also, the content of N (ɛ)-(carboxymethyl)lysine (CML) was quantified. Glycolaldehyde induced an imbalance in the redox status, with increased protein carbonylation and lipoperoxidation. Catalase and glyoxalase I had a decrease in their activities. Despite the oxidative stress, we observed no increase in CML content. These results suggest that short-chain aldehydes such as GA might have a significant role in the development of diabetic cardiomyopathy.
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Affiliation(s)
- Rodrigo Lorenzi
- Centro de Estudos em Estresse Oxidativo, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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Lorenzi R, Andrades ME, Bortolin RC, Nagai R, Dal-Pizzol F, Moreira JCF. Circulating glycolaldehyde induces oxidative damage in the kidney of rats. Diabetes Res Clin Pract 2010; 89:262-7. [PMID: 20605248 DOI: 10.1016/j.diabres.2010.05.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2010] [Revised: 04/26/2010] [Accepted: 05/06/2010] [Indexed: 11/28/2022]
Abstract
Renal failure is a key pathological issue in diabetic patients. Increased levels of advanced glycation end-products (AGEs) have been associated to diabetic complications, including diabetic nephropathy. Models of AGE-treated animals have been applied to evaluate the effect of such molecules on oxidative parameters involved in the pathogenesis and evolution of diabetes disease. However, little is known about the effect of glycating agents other than glucose. Here we investigate the effect of intravenously administrated glycolaldehyde (GA) on oxidative stress parameters of the kidney. Male Wistar rats received a single injection of GA in different doses (10, 50 or 100mg/kg) and were sacrificed after 6, 12 or 24h. Activities of antioxidant enzymes catalase, superoxide dismutase and glyoxalase I were assayed. Damage to proteins and lipids were also assayed. The content of N(epsilon)-(carboxymethyl)lysine (CML) was quantified. Glycolaldehyde induced a decrease in the activity of all enzymes studied. Lipoperoxidation and protein carbonylation raised, accompanied by a decrease in sulfhydryl groups. Despite the oxidative stress generated by GA, no change was found in the content of CML, suggesting that accumulation of AGEs in the kidney might occur at later steps in the development of diabetic nephropathy.
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Affiliation(s)
- Rodrigo Lorenzi
- Centro de Estudos em Estresse Oxidativo, Universidade Federal do Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, Brazil.
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Abstract
Human serum albumin is a small (66kD) globular protein representing over 60 % of the total plasma protein content. It is made up of 585 amino 6 acids and contains 35 cysteine residues forming disulfide bridges that contribute to its overall tertiary structure. It has a free cysteine-derived thiol group at Cys-34, which accounts for 80 % of its redox activity. Physiologically, serum albumin exists in a reduced form with a free thiol contributing to its antioxidant properties. It is synthesized primarily in the liver and is an acute-phase protein. It is a multifunctional plasma protein ascribed ligand-binding and transport properties as well as antioxidants and enzymatic functions. It maintains colloid osmotic pressure, modulates inflammatory response and may influence oxidative damage. Hypoalbuminemia is common in the intensive care unit and may be due to decreased synthesis by the liver and/or to increased losses or increased proteolysis and clearance. Although albumin was long used to control vascular collapse in critically ill patients, the evidence suggests that it does not offer a benefit over crystalloid solutions in vascular collapse. However, human serum albumin is an important circulating antioxidant and it may be beneficial in critically ill patients to limit oxidative damage. A number of studies suggest that in specific groups of hypoalbuminemic critically ill patients, albumin administration may have beneficial effects on organ function, although the exact mechanisms remain undefined. Further trials are needed to confirm theses observations and to clearly demonstrate whether albumin should be administered in critically ill patients with hypoalbuminemia.
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Affiliation(s)
- F Tamion
- Service de réanimation médicale, CHU de Rouen, 1 rue de Germont, Rouen, France.
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Creagh-Brown BC, Quinlan GJ, Evans TW, Burke-Gaffney A. The RAGE axis in systemic inflammation, acute lung injury and myocardial dysfunction: an important therapeutic target? Intensive Care Med 2010; 36:1644-1656. [PMID: 20631986 DOI: 10.1007/s00134-010-1952-z] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 05/25/2010] [Indexed: 01/08/2023]
Abstract
BACKGROUND The sepsis syndromes, frequently complicated by pulmonary and cardiac dysfunction, remain a major cause of death amongst the critically ill. Targeted therapies aimed at ameliorating the systemic inflammation that characterises the sepsis syndromes have largely yielded disappointing results in clinical trials. Whilst there are many potential reasons for lack of success of clinical trials, one possibility is that the pathways targeted, to date, are only modifiable very early in the course of the illness. More recent approaches have therefore attempted to identify pathways that could offer a wider therapeutic window, such as the receptor for advanced glycation end-products (RAGE) and its ligands. PURPOSE The objectives of this study were to review the evidence supporting the role of the RAGE axis in systemic inflammation and associated acute lung injury and myocardial dysfunction, to explore some of the problems and conflicts that these RAGE studies have raised and to consider strategies by which they might be resolved. METHODS MEDLINE was searched (1990-2010) and relevant literature collected and reviewed. RESULTS AND CONCLUSION RAGE is an inflammation-perpetuating receptor with a diverse range of ligands. Evidence supporting a role of the RAGE axis in the pathogenesis of systemic inflammation, ALI and myocardial dysfunction is compelling with numerous animal experiments showing the beneficial effects of inhibiting the RAGE axis. Despite a number of unanswered questions that need to be further addressed, the potential for inhibiting RAGE-mediated inflammation in humans undoubtedly exists.
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Affiliation(s)
- Benedict C Creagh-Brown
- Unit of Critical Care, Respiratory Science, National Heart and Lung Institute Division, Faculty of Medicine, Imperial College, London, UK
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Infusion fluids contain harmful glucose degradation products. Intensive Care Med 2010; 36:1213-20. [PMID: 20397009 PMCID: PMC2882046 DOI: 10.1007/s00134-010-1873-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2009] [Accepted: 03/07/2010] [Indexed: 01/04/2023]
Abstract
Purpose Glucose degradation products (GDPs) are precursors of advanced glycation end products (AGEs) that cause cellular damage and inflammation. We examined the content of GDPs in commercially available glucose-containing infusion fluids and investigated whether GDPs are found in patients’ blood. Methods The content of GDPs was examined in infusion fluids by high-performance liquid chromatography (HPLC) analysis. To investigate whether GDPs also are found in patients, we included 11 patients who received glucose fluids (standard group) during and after their surgery and 11 control patients receiving buffered saline (control group). Blood samples were analyzed for GDP content and carboxymethyllysine (CML), as a measure of AGE formation. The influence of heat-sterilized fluids on cell viability and cell function upon infection was investigated. Results All investigated fluids contained high concentrations of GDPs, such as 3-deoxyglucosone (3-DG). Serum concentration of 3-DG increased rapidly by a factor of eight in patients receiving standard therapy. Serum CML levels increased significantly and showed linear correlation with the amount of infused 3-DG. There was no increase in serum 3-DG or CML concentrations in the control group. The concentration of GDPs in most of the tested fluids damaged neutrophils, reducing their cytokine secretion, and inhibited microbial killing. Conclusions These findings indicate that normal standard fluid therapy involves unwanted infusion of GDPs. Reduction of the content of GDPs in commonly used infusion fluids may improve cell function, and possibly also organ function, in intensive-care patients. Electronic supplementary material The online version of this article (doi:10.1007/s00134-010-1873-x) contains supplementary material, which is available to authorized users.
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Bierhaus A, Nawroth PP. Multiple levels of regulation determine the role of the receptor for AGE (RAGE) as common soil in inflammation, immune responses and diabetes mellitus and its complications. Diabetologia 2009; 52:2251-63. [PMID: 19636529 DOI: 10.1007/s00125-009-1458-9] [Citation(s) in RCA: 222] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2009] [Accepted: 06/29/2009] [Indexed: 12/12/2022]
Abstract
The pattern recognition receptor or receptor for AGE (RAGE) is constitutionally expressed in a few cell types only. However in almost all cells studied so far it is induced by reactions known to initiate inflammation. Its biological activity seems to be mainly dependent on the presence of its various ligands, including AGE, S100-calcium binding protein/calgranulins, high-mobility group protein 1, amyloid-beta-peptides and the family of beta-sheet fibrils, all known to be elevated in chronic metabolic, malignant and inflammatory diseases. The RAGE pathway interacts with cytokine-, lipopolysaccharide-, oxidised LDL- and glucose-triggered cellular reactions by turning a short-lasting inflammatory response into a sustained change of cellular function driven by perpetuated activation of the proinflammatory transcription factor, nuclear factor kappa-B. RAGE-mediated persistent cell activation is of pivotal importance in various experimental and clinical settings, including diabetes and its complications, neurodegeneration, ageing, tumour growth, and autoimmune and infectious inflammatory disease. Due to RAGE's central role in maintaining perpetuated cell activation, various therapeutic attempts to block RAGE or its ligands are currently under investigation. Despite broad experimental evidence for the role of RAGE in chronic disease, knowledge of its physiological function is still missing, limiting predictions about safety of long-term inhibition of RAGE x ligand interaction in chronic diseases.
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Affiliation(s)
- A Bierhaus
- Department of Medicine I and Clinical Chemistry, University of Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
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