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Zhou M, Li R, Venkat P, Qian Y, Chopp M, Zacharek A, Landschoot-Ward J, Powell B, Jiang Q, Cui X. Post-Stroke Administration of L-4F Promotes Neurovascular and White Matter Remodeling in Type-2 Diabetic Stroke Mice. Front Neurol 2022; 13:863934. [PMID: 35572941 PMCID: PMC9100936 DOI: 10.3389/fneur.2022.863934] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 03/21/2022] [Indexed: 02/02/2023] Open
Abstract
Patients with type 2 diabetes mellitus (T2DM) exhibit a distinct and high risk of ischemic stroke with worse post-stroke neurovascular and white matter (WM) prognosis than the non-diabetic population. In the central nervous system, the ATP-binding cassette transporter member A 1 (ABCA1), a reverse cholesterol transporter that efflux cellular cholesterol, plays an important role in high-density lipoprotein (HDL) biogenesis and in maintaining neurovascular stability and WM integrity. Our previous study shows that L-4F, an economical apolipoprotein A member I (ApoA-I) mimetic peptide, has neuroprotective effects via alleviating neurovascular and WM impairments in the brain of db/db-T2DM stroke mice. To further investigate whether L-4F has neurorestorative benefits in the ischemic brain after stroke in T2DM and elucidate the underlying molecular mechanisms, we subjected middle-aged, brain-ABCA1 deficient (ABCA1−B/−B), and ABCA1-floxed (ABCA1fl/fl) T2DM control mice to distal middle cerebral artery occlusion. L-4F (16 mg/kg, subcutaneous) treatment was initiated 24 h after stroke and administered once daily for 21 days. Treatment of T2DM-stroke with L-4F improved neurological functional outcome, and decreased hemorrhage, mortality, and BBB leakage identified by decreased albumin infiltration and increased tight-junction and astrocyte end-feet densities, increased cerebral arteriole diameter and smooth muscle cell number, and increased WM density and oligodendrogenesis in the ischemic brain in both ABCA1−B/−B and ABCA1fl/fl T2DM-stroke mice compared with vehicle-control mice, respectively (p < 0.05, n = 9 or 21/group). The L-4F treatment reduced macrophage infiltration and neuroinflammation identified by decreases in ED-1, monocyte chemoattractant protein-1 (MCP-1), and toll-like receptor 4 (TLR4) expression, and increases in anti-inflammatory factor Insulin-like growth factor 1 (IGF-1) and its receptor IGF-1 receptor β (IGF-1Rβ) in the ischemic brain (p < 0.05, n = 6/group). These results suggest that post-stroke administration of L-4F may provide a restorative strategy for T2DM-stroke by promoting neurovascular and WM remodeling. Reducing neuroinflammation in the injured brain may contribute at least partially to the restorative effects of L-4F independent of the ABCA1 signaling pathway.
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Affiliation(s)
- Min Zhou
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Rongwen Li
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Poornima Venkat
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Yu Qian
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Michael Chopp
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
- Department of Physics, Oakland University, Rochester, MI, United States
| | - Alex Zacharek
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | | | - Brianna Powell
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Quan Jiang
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
- Department of Physics, Oakland University, Rochester, MI, United States
- Quan Jiang
| | - Xu Cui
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
- *Correspondence: Xu Cui
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Wang X, Li R, Zacharek A, Landschoot-Ward J, Chopp M, Chen J, Cui X. ApoA-I Mimetic Peptide Reduces Vascular and White Matter Damage After Stroke in Type-2 Diabetic Mice. Front Neurosci 2019; 13:1127. [PMID: 31708728 PMCID: PMC6823666 DOI: 10.3389/fnins.2019.01127] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 10/04/2019] [Indexed: 01/04/2023] Open
Abstract
Diabetes leads to an elevated risk of stroke and worse functional outcome compared to the general population. We investigate whether L-4F, an economical ApoA-I mimetic peptide, reduces neurovascular and white-matter damage in db/db type-2 diabetic (T2DM) stroke mice. L-4F (16 mg/kg, subcutaneously administered initially 2 h after stroke and subsequently daily for 4 days) reduced hemorrhagic transformation, decreased infarct-volume and mortality, and treated mice exhibited increased cerebral arteriole diameter and smooth muscle cell number, decreased blood-brain barrier leakage and white-matter damage in the ischemic brain as well as improved neurological functional outcome after stroke compared with vehicle-control T2DM mice (p < 0.05, n = 11/group). Moreover, administration of L-4F mitigated macrophage infiltration, and reduced the level of proinflammatory mediators tumor necrosis factor alpha (TNFα), high-mobility group box-1 (HMGB-1)/advanced glycation end-product receptor (RAGE) and plasminogen activator inhibitor-1 (PAI-1) in the ischemic brain in T2DM mice (p < 0.05, n = 6/group). In vitro, L-4F treatment did not increase capillary-like tube formation in mouse-brain endothelial cells, but increased primary artery explant cell migration derived from C57BL/6-aorta 1 day after middle cerebral artery occlusion (MCAo), and enhanced neurite-outgrowth after 2 h of oxygen-glucose deprivation and axonal-outgrowth in primary cortical neurons derived from the C57BL/6-embryos subjected to high-glucose condition. This study suggests that early treatment with L-4F provides a potential strategy to reduce neuroinflammation and vascular and white-matter damage in the T2DM stroke population.
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Affiliation(s)
- Xiaohui Wang
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Rongwen Li
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Alex Zacharek
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | | | - Michael Chopp
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States.,Department of Physics, Oakland University, Rochester, MI, United States
| | - Jieli Chen
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
| | - Xu Cui
- Department of Neurology, Henry Ford Hospital, Detroit, MI, United States
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Abstract
There is a growing body of evidence that cumulative hyperglycemic exposure plays a central role in the development and progression of atherosclerotic cardiovascular disease in diabetic patients. Monosaccharides, such as glucose, fructose, and glyceraldehyde can react non-enzymatically with amino groups of proteins, lipids, nucleic acids to form senescent macromolecules termed advanced glycation end products (AGEs), whose formation and accumulation has been known to progress in diabetic patients, especially in those with a long history of disease. The sustained accumulation of AGEs could contribute to the phenomenon of metabolic memory or legacy effects observed in long-term follow-up clinical studies of diabetic patients. AGE modification alters the structural integrity and function of various types of macromolecules, and interaction of AGEs with a receptor for AGEs (RAGE) has been shown to evoke inflammatory and thrombotic reactions. Therefore, the AGE–RAGE axis is a novel therapeutic target of atherosclerotic cardiovascular disease in diabetic patients. In this paper, we briefly review the pathological role of AGEs and their receptor RAGE system in atherosclerotic cardiovascular disease, including peripheral artery disease and discuss the clinical utility of measuring AGEs in evaluating the severity of atherosclerosis in patients with diabetes.
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Affiliation(s)
- Sho-Ichi Yamagishi
- Department of Pathophysiology and Therapeutics of Diabetic Vascular Complications, Kurume University School of Medicine, Kurume, Fukuoka, Japan
| | - Takanori Matsui
- Department of Pathophysiology and Therapeutics of Diabetic Vascular Complications, Kurume University School of Medicine, Kurume, Fukuoka, Japan
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Yamagishi SI, Nakamura N, Matsui T. Glycation and cardiovascular disease in diabetes: A perspective on the concept of metabolic memory. J Diabetes 2017; 9:141-148. [PMID: 27556881 DOI: 10.1111/1753-0407.12475] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 07/25/2016] [Accepted: 08/20/2016] [Indexed: 12/16/2022] Open
Abstract
Epidemiological studies have suggested that cumulative diabetic exposure, namely prolonged exposure to chronic hyperglycemia, contributes to the increased risk of cardiovascular disease (CVD) in diabetes. The formation and accumulation of advanced glycation end-products (AGEs) have been known to progress under hyperglycemic conditions. Because AGEs-modified collagens are hardly degraded and remain in diabetic vessels, kidneys and the heart for a long time, even after glycemic control has been achieved, AGEs could become a marker reflecting cumulative diabetic exposure. Furthermore, there is a growing body of evidence that an interaction between AGEs and the receptor for AGEs (RAGE) plays a role in the pathogenesis of CVD. In addition, AGEs induce the expression of RAGE, thus leading to sustained activation of the AGEs-RAGE axis in diabetes. Herein we review the pathological role of the AGEs-RAGE axis in CVD, focusing particularly on the phenomenon of metabolic memory, and discuss the potential clinical usefulness of measuring circulating and tissue levels of AGEs accumulation to evaluate diabetic macrovascular complications.
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Affiliation(s)
- Sho-Ichi Yamagishi
- Department of Pathophysiology and Therapeutics of Diabetic Vascular Complications, Kurume University School of Medicine, Kurume, Japan
| | - Nobutaka Nakamura
- Department of Pathophysiology and Therapeutics of Diabetic Vascular Complications, Kurume University School of Medicine, Kurume, Japan
| | - Takanori Matsui
- Department of Pathophysiology and Therapeutics of Diabetic Vascular Complications, Kurume University School of Medicine, Kurume, Japan
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van Waateringe RP, Slagter SN, van Beek AP, van der Klauw MM, van Vliet-Ostaptchouk JV, Graaff R, Paterson AD, Lutgers HL, Wolffenbuttel BHR. Skin autofluorescence, a non-invasive biomarker for advanced glycation end products, is associated with the metabolic syndrome and its individual components. Diabetol Metab Syndr 2017; 9:42. [PMID: 28572855 PMCID: PMC5450154 DOI: 10.1186/s13098-017-0241-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Accepted: 05/23/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND The metabolic syndrome (MetS) comprises several cardiometabolic risk factors associated with increased risk for both type 2 diabetes and cardiovascular disease. Skin autofluorescence (SAF), a non-invasive biomarker of advanced glycation end products accumulation, is associated with cardiovascular complications in subjects with diabetes. The aim of the present study was to examine the association between SAF and the presence of MetS as well as its individual components in a general population. METHODS For this cross-sectional analysis, we included 78,671 non-diabetic subjects between 18 and 80 years of age who participated in the LifeLines Cohort Study and had SAF measurement obtained non-invasively using the AGE Reader. MetS was defined according to the revised NCEP ATP III criteria. Students unpaired t test was used to test differences between groups. Both logistic and linear regression analyses were performed in order to test associations between the individual MetS components and SAF. RESULTS Subjects with MetS had higher SAF (2.07 ± 0.45 arbitrary units, AU) compared to individuals without MetS (1.89 ± 0.42 AU) (p < 0.001). There was a positive association between the number of MetS components and higher SAF Z-scores (p < 0.001). Individuals in the highest SAF tertile had a higher presence of MetS (OR 2.61; 95% CI 2.48-2.75) and some of the individual components compared to subjects in the lowest SAF tertile. After correction for age, gender, creatinine clearance, HbA1c and smoking status, only elevated blood pressure and low HDL cholesterol remained significantly associated with higher SAF (p = 0.002 and p = 0.001 respectively). CONCLUSION Skin autofluorescence was associated with the presence of MetS and some of its individual components. In addition, increasing SAF Z-scores were observed with a higher number of MetS components. Prospective studies are needed to establish whether SAF can be used as an (additional) screening tool to predict both cardiovascular disease and type 2 diabetes in high-risk populations.
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Affiliation(s)
- Robert P. van Waateringe
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, HPC AA31, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Sandra N. Slagter
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, HPC AA31, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Andre P. van Beek
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, HPC AA31, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Melanie M. van der Klauw
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, HPC AA31, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Jana V. van Vliet-Ostaptchouk
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, HPC AA31, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Reindert Graaff
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, HPC AA31, P.O. Box 30001, 9700 RB Groningen, The Netherlands
| | - Andrew D. Paterson
- Program in Genetics and Genome Biology, Hospital for Sick Children, Toronto, ON M5G 0A4 Canada
| | - Helen L. Lutgers
- Department of Internal Medicine, Medical Center Leeuwarden, 8934 AD Leeuwarden, The Netherlands
| | - Bruce H. R. Wolffenbuttel
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, HPC AA31, P.O. Box 30001, 9700 RB Groningen, The Netherlands
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Annema W, Willemsen HM, de Boer JF, Dikkers A, van der Giet M, Nieuwland W, Muller Kobold AC, van Pelt LJ, Slart RHJA, van der Horst ICC, Dullaart RPF, Tio RA, Tietge UJF. HDL function is impaired in acute myocardial infarction independent of plasma HDL cholesterol levels. J Clin Lipidol 2016; 10:1318-1328. [PMID: 27919348 DOI: 10.1016/j.jacl.2016.08.003] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 06/15/2016] [Accepted: 08/08/2016] [Indexed: 12/20/2022]
Abstract
BACKGROUND High-density lipoproteins (HDLs) protect against the development of atherosclerotic cardiovascular disease. HDL function represents an emerging concept in cardiovascular research. OBJECTIVE This study investigated the association between HDL functionality and acute myocardial infarction (MI) independent of HDL-cholesterol plasma levels. METHODS Participants (non-ST-segment elevation MI, non-STEMI, n = 41; STEMI, n = 37; non-MI patients, n = 33) from a prospective follow-up study enrolling patients with acute chest pain were matched for age and plasma HDL cholesterol. The in vitro capacity of HDL to (1) mediate cholesterol efflux from macrophage foam cells, (2) prevent low-density lipoprotein oxidation, and (3) inhibit TNF-α-induced vascular adhesion molecule-1 expression in endothelial cells was determined. RESULTS STEMI-HDL displayed reduced cholesterol efflux (P < .001) and anti-inflammatory functionality (P = .001), whereas the antioxidative properties were unaltered. Cholesterol efflux correlated with the anti-inflammatory HDL activity (P < .001). Not C-reactive protein levels, a marker of systemic inflammation, but specifically plasma myeloperoxidase levels were independently associated with impaired HDL function (efflux: P = .022; anti-inflammation: P < .001). Subjects in the higher risk quartile of efflux (odds ratio [OR], 5.66; 95% confidence interval [CI], 1.26-25.00; P = .024) as well as anti-inflammatory functionality of HDL (OR, 5.53; 95% CI, 1.83-16.73; P = .002) had a higher OR for MI vs those in the three lower risk quartiles combined. CONCLUSION Independent of plasma HDL cholesterol levels, 2 of 3 antiatherogenic HDL functionalities tested were significantly impaired in STEMI patients, namely cholesterol efflux and anti-inflammatory properties. Increased myeloperoxidase levels might represent a major contributing mechanism for decreased HDL functionality in MI patients.
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Affiliation(s)
- Wijtske Annema
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Hendrik M Willemsen
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jan Freark de Boer
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Arne Dikkers
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Markus van der Giet
- Division of Nephrology and Endocrinology, Charité Campus Benjamin Franklin, Berlin, Germany
| | - Wybe Nieuwland
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Anneke C Muller Kobold
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - L Joost van Pelt
- Department of Laboratory Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Riemer H J A Slart
- Department of Nuclear Medicine and Molecular Imaging, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Cardiovascular Imaging Group Groningen, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Iwan C C van der Horst
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Robin P F Dullaart
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - René A Tio
- Department of Cardiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Cardiovascular Imaging Group Groningen, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Uwe J F Tietge
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands.
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Langer S, Beescho C, Ring A, Dorfmann O, Steinau HU, Spindler N. A new in vivo model using a dorsal skinfold chamber to investigate microcirculation and angiogenesis in diabetic wounds. GMS Interdiscip Plast Reconstr Surg DGPW 2016; 5:Doc09. [PMID: 26955508 PMCID: PMC4764794 DOI: 10.3205/iprs000088] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Introduction: Diabetes mellitus describes a dysregulation of glucose metabolism due to improper insulin secretion, reduced insulin efficacy or both. It is a well-known fact that diabetic patients are likely to suffer from impaired wound healing, as diabetes strongly affects tissue angiogenesis. Until now, no satisfying in vivo murine model has been established to analyze the dynamics of angiogenesis during diabetic wound healing. To help understand the pathophysiology of diabetes and its effect on angiogenesis, a novel in vivo murine model was established using the skinfold chamber in mice. Materials and Methods: Mutant diabetic mice (db; BKS.Cg-m+/+Leprdb/J), wildtype mice (dock7Leprdb+/+m) and laboratory BALB/c mice were examined. They were kept in single cages with access to laboratory chow with an 12/12 hour day/night circle. Lesions of the panniculus muscle (Ø 2 mm) were created in the center of the transparent window chamber and the subsequent muscular wound healing was then observed for a period of 22 days. Important analytic parameters included vessel diameter, red blood cell velocity, vascular permeability, and leakage of muscle capillaries and post capillary venules. The key parameters were functional capillary density (FCD) and angiogenesis positive area (APA). Results: We established a model which allows high resolution in vivo imaging of functional angiogenesis in diabetic wounds. As expected, db mice showed impaired wound closure (day 22) compared to wounds of BALB/c or WT mice (day 15). FCD was lower in diabetic mice compared to WT and BALB/c during the entire observation period. The dynamics of angiogenesis also decreased in db mice, as reflected by the lowest APA levels. Significant variations in the skin buildup were observed, with the greatest skin depth in db mice. Furthermore, in db mice, the dermis:subcutaneous ratio was highly shifted towards the subcutaneous layers as opposed to WT or BALB/c mice. Conclusion: Using this new in vivo model of the skinfold chamber, it was possible to analyze and quantify microangiopathical changes which are essential for a better understanding of the pathophysiology of disturbed wound healing. Research in microcirculation is important to display perfusion in wounds versus healthy tissue. Using our model, we were able to compare wound healing in diabetic and healthy mice. We were also able to objectively analyze perfusion in wound edges and compare microcirculatory parameters. This model may be well suited to augment different therapeutic options.
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Affiliation(s)
- Stefan Langer
- Department of Plastic, Esthetic and Special Hand Surgery, University Hospital Leipzig, Germany
| | - Christian Beescho
- Department of Plastic, Esthetic and Special Hand Surgery, University Hospital Leipzig, Germany
| | - Andrej Ring
- Department of Plastic Surgery and Severe Burns, University Hospital Bergmannsheil, Ruhr University Bochum, Germany
| | - Olivia Dorfmann
- Department of Plastic, Esthetic and Special Hand Surgery, University Hospital Leipzig, Germany
| | | | - Nick Spindler
- Department of Plastic, Esthetic and Special Hand Surgery, University Hospital Leipzig, Germany
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Zhang W, Xu Q, Wu J, Zhou X, Weng J, Xu J, Wang W, Huang Q, Guo X. Role of Src in Vascular Hyperpermeability Induced by Advanced Glycation End Products. Sci Rep 2015; 5:14090. [PMID: 26381822 PMCID: PMC4585381 DOI: 10.1038/srep14090] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 08/18/2015] [Indexed: 12/20/2022] Open
Abstract
The disruption of microvascular barrier in response to advanced glycation end products (AGEs) stimulation contributes to vasculopathy associated with diabetes mellitus. Here, to study the role of Src and its association with moesin, VE-cadherin and focal adhesion kinase (FAK) in AGE-induced vascular hyperpermeability, we verified that AGE induced phosphorylation of Src, causing increased permeability in HUVECs. Cells over-expressed Src displayed a higher permeability after AGE treatment, accompanied with more obvious F-actin rearrangement. Activation of Src with pcDNA3/flag-SrcY530F alone duplicated these effects. Inhibition of Src with siRNA, PP2 or pcDNA3/flag-SrcK298M abolished these effects. The pulmonary microvascular endothelial cells (PMVECs) isolated from receptor for AGEs (RAGE)-knockout mice decreased the phosphorylation of Src and attenuated the barrier dysfunction after AGE-treatment. In vivo study showed that the exudation of dextran from mesenteric venules was increased in AGE-treated mouse. This was attenuated in RAGE knockout or PP2-pretreated mice. Up-regulation of Src activity induced the phosphorylation of moesin, as well as activation and dissociation of VE-cadherin, while down-regulation of Src abolished these effects. FAK was also proved to interact with Src in HUVECs stimulated with AGEs. Our studies demonstrated that Src plays a critical role in AGE-induced microvascular hyperpermeability by phosphorylating moesin, VE-cadherin, and FAK respectively.
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Affiliation(s)
- Weijin Zhang
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
| | - Qiulin Xu
- Department of Intensive Care Unit, General Hospital of Guangzhou Military Command, Guangzhou, 510010, China.,Postdoctoral Workstation, Huabo Bio-pharmaceutical Research Institute, Guangzhou 510515, China
| | - Jie Wu
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
| | - Xiaoyan Zhou
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
| | - Jie Weng
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
| | - Jing Xu
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
| | - Weiju Wang
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
| | - Qiaobing Huang
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
| | - Xiaohua Guo
- Department of Pathophysiology, Key Laboratory for Shock and Microcirculation Research of Guangdong Province, Southern Medical University, Guangzhou 510515, China
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Annema W, Dikkers A, de Boer JF, Dullaart RPF, Sanders JSF, Bakker SJL, Tietge UJF. HDL Cholesterol Efflux Predicts Graft Failure in Renal Transplant Recipients. J Am Soc Nephrol 2015; 27:595-603. [PMID: 26319244 DOI: 10.1681/asn.2014090857] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 03/31/2015] [Indexed: 01/14/2023] Open
Abstract
High-density lipoprotein (HDL) particles are involved in the protection against cardiovascular disease by promoting cholesterol efflux, in which accumulated cholesterol is removed from macrophage foam cells. We investigated whether HDL cholesterol efflux capacity is associated with cardiovascular mortality, all-cause mortality, and graft failure in a cohort of renal transplant recipients (n=495, median follow-up 7.0 years). Cholesterol efflux capacity at baseline was quantified using incubation of human macrophage foam cells with apolipoprotein B-depleted plasma. Baseline efflux capacity was not different in deceased patients and survivors (P=0.60 or P=0.50 for cardiovascular or all-cause mortality, respectively), whereas recipients developing graft failure had lower efflux capacity than those with functioning grafts (P<0.001). Kaplan-Meier analysis demonstrated a lower risk for graft failure (P=0.004) but not cardiovascular (P=0.30) or all-cause mortality (P=0.31) with increasing gender-stratified tertiles of efflux capacity. Cox regression analyses adjusted for age and gender showed that efflux capacity was not associated with cardiovascular mortality (hazard ratio [HR], 0.89; 95% confidence interval [95% CI], 0.67 to 1.19; P=0.43). Furthermore, the association between efflux capacity and all-cause mortality (HR, .79; 95% CI, 0.63 to 0.98; P=0.031) disappeared after further adjustment for potential confounders. However, efflux capacity at baseline significantly predicted graft failure (HR, 0.43; 95% CI, 0.29 to 0.64; P<0.001) independent of apolipoprotein A-I, HDL cholesterol, or creatinine clearance. In conclusion, this prospective study shows that cholesterol efflux capacity from macrophage foam cells is not associated with cardiovascular or all-cause mortality but is a strong predictor of graft failure independent of plasma HDL cholesterol levels in renal transplant recipients.
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Affiliation(s)
- Wijtske Annema
- Department of Pediatrics, Center for Liver, Digestive, and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands
| | - Arne Dikkers
- Department of Pediatrics, Center for Liver, Digestive, and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jan Freark de Boer
- Department of Pediatrics, Center for Liver, Digestive, and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Robin P F Dullaart
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; and
| | - Jan-Stephan F Sanders
- Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Stephan J L Bakker
- Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Uwe J F Tietge
- Department of Pediatrics, Center for Liver, Digestive, and Metabolic Diseases, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands; Top Institute Food and Nutrition, Wageningen, The Netherlands;
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Yamagishi SI, Fukami K, Matsui T. Evaluation of tissue accumulation levels of advanced glycation end products by skin autofluorescence: A novel marker of vascular complications in high-risk patients for cardiovascular disease. Int J Cardiol 2015; 185:263-8. [DOI: 10.1016/j.ijcard.2015.03.167] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2015] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 11/25/2022]
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van Tienhoven-Wind LJN, Dullaart RPF. Low-normal thyroid function and novel cardiometabolic biomarkers. Nutrients 2015; 7:1352-77. [PMID: 25690422 PMCID: PMC4344592 DOI: 10.3390/nu7021352] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2014] [Revised: 01/16/2015] [Accepted: 02/04/2015] [Indexed: 12/14/2022] Open
Abstract
The concept is emerging that low-normal thyroid function, i.e., either higher thyroid-stimulating hormone or lower free thyroxine levels within the euthyroid reference range, could contribute to the development of atherosclerotic cardiovascular disease. It is possible that adverse effects of low-normal thyroid function on cardiovascular outcome may be particularly relevant for specific populations, such as younger people and subjects with high cardiovascular risk. Low-normal thyroid function probably relates to modest increases in plasma total cholesterol, low density lipoprotein cholesterol, triglycerides and insulin resistance, but effects on high density lipoprotein (HDL) cholesterol and non-alcoholic fatty liver disease are inconsistent. Low-normal thyroid function may enhance plasma cholesteryl ester transfer, and contribute to an impaired ability of HDL to inhibit oxidative modification of LDL, reflecting pro-atherogenic alterations in lipoprotein metabolism and HDL function, respectively. Low-normal thyroid function also confers lower levels of bilirubin, a strong natural anti-oxidant. Remarkably, all these effects of low-normal thyroid functional status appear to be more outspoken in the context of chronic hyperglycemia and/or insulin resistance. Collectively, these data support the concept that low-normal thyroid function may adversely affect several processes which conceivably contribute to the pathogenesis of atherosclerotic cardiovascular disease, beyond effects on conventional lipoprotein measures.
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Affiliation(s)
- Lynnda J N van Tienhoven-Wind
- Department of Endocrinology, University of Groningen and University Medical Center Groningen, Groningen, AV Groningen 19713, The Netherlands.
| | - Robin P F Dullaart
- Department of Endocrinology, University of Groningen and University Medical Center Groningen, Groningen, AV Groningen 19713, The Netherlands.
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Schmidt AM. Skin autofluorescence, 5-year mortality, and cardiovascular events in peripheral arterial disease: all that glitters is surely not gold. Arterioscler Thromb Vasc Biol 2014; 34:697-9. [PMID: 24665121 DOI: 10.1161/atvbaha.114.303419] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ann Marie Schmidt
- From the Diabetes Research Program, New York University Langone Medical Center, New York, NY
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Ng KP, Stringer SJ, Jesky MD, Yadav P, Athwal R, Dutton M, Ferro CJ, Cockwell P. Allopurinol is an independent determinant of improved arterial stiffness in chronic kidney disease: a cross-sectional study. PLoS One 2014; 9:e91961. [PMID: 24632580 PMCID: PMC3954864 DOI: 10.1371/journal.pone.0091961] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Accepted: 02/17/2014] [Indexed: 02/07/2023] Open
Abstract
Background Arterial stiffness is increased in patients with CKD and is a powerful predictor of cardiovascular morbidity and mortality. Use of the xanthine oxidase inhibitor allopurinol has been shown to improve endothelial function, reduce left ventricular hypertrophy and possibly improve cardiovascular outcome. We explored the relationship between use of allopurinol and arterial stiffness in patients with chronic kidney disease (CKD). Methods Cross-sectional observational study of 422 patients with CKD with evidence of, or at high risk of, renal disease progression. Arterial stiffness was determined by carotid-femoral pulse wave velocity (PWV). Results The mean age was 63±16 years, median estimated glomerular filtration rate was 25 (interquartile range: 19–31) ml/min/1.73 m2 and mean PWV was 10.2±2.4 m/s. Seventy-seven patients (18%) were receiving regular allopurinol, 61% at a dose of 100 mg/day (range: 50–400 mg/day). Patients receiving allopurinol had significantly lower peripheral pulse pressure, central pulse pressure, central systolic blood pressure, serum uric acid level tissue advanced glycation end product levels but comparable high-sensitivity C-reactive protein levels. Use of allopurinol was associated with lower PWV. After adjusting for age, gender, ethnicity, tissue advanced glycation end product level, peripheral pulse pressure, smoking pack years, presence of diabetes mellitus and use of angiotensin converting enzyme inhibitor or angiotensin II receptor blocker, the use of allopurinol remained a significant independent determinant of PWV (mean difference: −0.63 m/s; 95% CI, −0.09 to −1.17 m/s, p = 0.02). Conclusion In patients with CKD, use of allopurinol is independently associated with lower arterial stiffness. This study provides further justification for a large definitive randomised controlled trial examining the therapeutic potential of allopurinol to reduce cardiovascular risk in people with CKD.
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Affiliation(s)
- Khai P. Ng
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - Stephanie J. Stringer
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
- School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Mark D. Jesky
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
- School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Punit Yadav
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
- School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Rajbir Athwal
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - Mary Dutton
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
| | - Charles J. Ferro
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
- School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
| | - Paul Cockwell
- Department of Renal Medicine, Queen Elizabeth Hospital Birmingham, Birmingham, United Kingdom
- School of Immunity and Infection, University of Birmingham, Birmingham, United Kingdom
- * E-mail:
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Takata K, Imaizumi S, Kawachi E, Suematsu Y, Shimizu T, Abe S, Matsuo Y, Tsukahara H, Noda K, Yahiro E, Zhang B, Uehara Y, Miura SI, Saku K. Impact of Cigarette Smoking Cessation on High-Density Lipoprotein Functionality. Circ J 2014; 78:2955-62. [DOI: 10.1253/circj.cj-14-0638] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Kohei Takata
- Department of Cardiology, Fukuoka University School of Medicine
| | | | - Emi Kawachi
- Department of Cardiology, Fukuoka University School of Medicine
| | | | | | - Satomi Abe
- Department of Cardiology, Fukuoka University School of Medicine
| | - Yoshino Matsuo
- Department of Cardiology, Fukuoka University School of Medicine
| | | | - Keita Noda
- Department of Cardiology, Fukuoka University School of Medicine
| | - Eiji Yahiro
- Department of Cardiology, Fukuoka University School of Medicine
| | - Bo Zhang
- Department of Biochemistry, Fukuoka University School of Medicine
| | | | | | - Keijiro Saku
- Department of Cardiology, Fukuoka University School of Medicine
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Manigrasso MB, Juranek J, Ramasamy R, Schmidt AM. Unlocking the biology of RAGE in diabetic microvascular complications. Trends Endocrinol Metab 2014; 25:15-22. [PMID: 24011512 PMCID: PMC3877224 DOI: 10.1016/j.tem.2013.08.002] [Citation(s) in RCA: 144] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 08/05/2013] [Accepted: 08/08/2013] [Indexed: 02/08/2023]
Abstract
The discovery of the receptor for advanced glycation end-products (RAGE) set the stage for the elucidation of important mechanisms underpinning diabetic complications. RAGE transduces the signals of advanced glycation end-products (AGEs), proinflammatory S100/calgranulins, and high mobility group box 1 (HMGB1), and is a one of a family of receptors for lysophosphatidic acid (LPA). These ligand tales weave a theme of vascular perturbation and inflammation linked to the pathogenesis of the chronic complications of diabetes. Once deemed implausible, this concept of inflammatory cues participating in diabetic complications is now supported by a plethora of experimental evidence in the macro- and microvasculature. We review the biology of ligand-RAGE signal transduction and its roles in diabetic microvascular complications, from animal models to human subjects.
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Affiliation(s)
- Michaele B Manigrasso
- Diabetes Research Program, Division of Endocrinology, New York University School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Judyta Juranek
- Diabetes Research Program, Division of Endocrinology, New York University School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Ravichandran Ramasamy
- Diabetes Research Program, Division of Endocrinology, New York University School of Medicine, 550 First Avenue, New York, NY 10016, USA
| | - Ann Marie Schmidt
- Diabetes Research Program, Division of Endocrinology, New York University School of Medicine, 550 First Avenue, New York, NY 10016, USA.
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Triolo M, de Boer JF, Annema W, Kwakernaak AJ, Tietge UJF, Dullaart RPF. Low normal free T4 confers decreased high-density lipoprotein antioxidative functionality in the context of hyperglycaemia. Clin Endocrinol (Oxf) 2013; 79:416-23. [PMID: 23278171 DOI: 10.1111/cen.12138] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 12/06/2012] [Accepted: 12/21/2012] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Low normal thyroid function may promote the development of atherosclerotic cardiovascular disease by thus far poorly defined mechanisms. We tested the impact of thyroid function on HDL antioxidative capacity, a metric of its antiatherogenic functionality, in euthyroid subjects with varying degrees of glucose tolerance. DESIGN AND SUBJECTS Seventy subjects with Type 2 diabetes mellitus (T2DM), 37 subjects with impaired fasting glucose (IFG) and 31 subjects with normal fasting glucose (NFG) (revised NCEP-ATPIII criteria) participated in a cross-sectional study. MEASUREMENTS HDL antioxidative capacity (standardized for HDL cholesterol) was measured as the percentage inhibition of low-density lipoprotein oxidation in vitro. RESULTS TSH, free T4 and HDL antioxidative capacity were not different among NFG, IFG and T2DM subjects (P > 0·25 for each). HDL antioxidative capacity was correlated positively with free T4 (r = 0·320, P = 0·007), and negatively with plasma glucose (r = -0·394, P < 0·001) in T2DM only. Taking account of age and sex, the relationship of HDL antioxidative functionality with free T4 was modified by glucose tolerance status (P = 0·040 and P = 0·008 for interactions of IFG and T2DM with free T4 respectively). Prevailing plasma glucose also interacted positively with free T4 on HDL antioxidative capacity (P = 0·054). CONCLUSIONS In the context of chronic hyperglycaemia, low free T4 within the euthyroid range confers diminished HDL antioxidative capacity, a pathophysiologically relevant metric of HDL functionality.
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Affiliation(s)
- Michela Triolo
- Department of Endocrinology, University Medical Center Groningen and University of Groningen, Groningen, The Netherlands
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Triolo M, Annema W, Dullaart RPF, Tietge UJF. Assessing the functional properties of high-density lipoproteins: an emerging concept in cardiovascular research. Biomark Med 2013; 7:457-72. [DOI: 10.2217/bmm.13.35] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Although plasma concentrations of high-density lipoprotein (HDL) cholesterol correlate inversely with the incidence of atherosclerotic cardiovascular disease, results from recent epidemiological, genetic and pharmacological intervention studies resulted in a shift of concept. Rather than HDL cholesterol mass levels, the functionality of HDL particles is increasingly regarded as potentially clinically important. This review provides an overview of four key functional properties of HDL, namely cholesterol efflux and reverse cholesterol transport; antioxidative activities; anti-inflammatory activities; and the ability of HDL to increase vascular nitric oxide production resulting in vasorelaxation. Currently available assays are put into context with different HDL isolation procedures yielding compositional heterogeneity of the particle. Gathered knowledge on the impact of different disease states on HDL function is discussed together with potential underlying causative factors modulating HDL functionalities. In addition, a perspective is provided regarding how a better understanding of the determinants of (dys)functional HDL might impact clinical practice and the future design of rational and specific therapeutic approaches targeting atherosclerotic cardiovascular disease.
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Affiliation(s)
- Michela Triolo
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Wijtske Annema
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
- Top Institute Food & Nutrition, Wageningen, The Netherlands
| | - Robin PF Dullaart
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands
| | - Uwe JF Tietge
- Top Institute Food & Nutrition, Wageningen, The Netherlands
- Department of Pediatrics, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 GZ Groningen, The Netherlands.
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Dullaart RPF, de Boer JF, Annema W, Tietge UJF. The inverse relation of HDL anti-oxidative functionality with serum amyloid a is lost in metabolic syndrome subjects. Obesity (Silver Spring) 2013; 21:361-6. [PMID: 23404653 DOI: 10.1002/oby.20058] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2012] [Accepted: 08/04/2012] [Indexed: 12/19/2022]
Abstract
OBJECTIVE Anti-oxidative properties of high density lipoproteins (HDL) are relevant for atheroprotection. HDL carry serum amyloid A (SAA), which may impair HDL functionality. We questioned whether HDL anti-oxidative capacity is determined by SAA. DESIGN AND METHODS Relationships of HDL anti-oxidative capacity (% inhibition of low density lipoprotein oxidation in vitro) with SAA were determined in 54 non-diabetic subjects without metabolic syndrome (MetS) and 68 subjects with MetS (including 51 subjects with Type 2 diabetes mellitus). RESULTS SAA levels were higher in MetS subjects, coinciding higher high sensitive C-reactive protein (hs-CRP) and lower HDL cholesterol and apolipoprotein (apo) A-I levels (P<0.001 for all). HDL anti-oxidative capacity was not different between subjects with and without MetS (P=0.76), but the HDL anti-oxidation index (HDL anti-oxidative capacity multiplied by individual HDL cholesterol concentrations), as a measure of global anti-oxidative functionality of HDL, was lower in Mets subjects (P<0.001). HDL anti-oxidative capacity was correlated inversely with SAA levels in subjects without MetS (r=-0.286, P=0.036). Notably, this relationship was independent of HDL cholesterol or apoA-I (P<0.05 for both). In contrast, no relation of HDL anti-oxidative capacity with SAA was observed in MetS subjects (r=0.032, P=0.80). The relationship of SAA with HDL anti-oxidative capacity was different in subjects with MetS compared to subjects without MetS (P=0.039 for the interaction between the presence of MetS and SAA on HDL anti-oxidative capacity) taking age and diabetes status into account. CONCLUSION Higher SAA levels may impair HDL anti-oxidative functionality. The relationship of this physiologically relevant HDL functionality measure with circulating SAA levels is apparently disturbed in metabolic syndrome.
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Affiliation(s)
- Robin P F Dullaart
- Department of Endocrinology, Center for Liver, Digestive and Metabolic Diseases, University Medical Center Groningen and University of Groningen, Groningen.
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Dullaart RPF, Annema W, de Boer JF, Tietge UJF. Pancreatic β-cell function relates positively to HDL functionality in well-controlled type 2 diabetes mellitus. Atherosclerosis 2012; 222:567-73. [PMID: 22541874 DOI: 10.1016/j.atherosclerosis.2012.03.037] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 03/02/2012] [Accepted: 03/31/2012] [Indexed: 01/19/2023]
Abstract
BACKGROUND High density lipoproteins (HDLs) have been implicated in glucose homeostasis. Among subjects with normal fasting glucose (NFG), impaired fasting glucose (IFG) and Type 2 diabetes mellitus (T2DM) we tested whether pancreatic β-cell function relates to HDL functionality, as determined by HDL anti-oxidative capacity and cellular cholesterol efflux to plasma. SUBJECTS AND METHODS HDL anti-oxidative capacity (inhibition of LDL oxidation in vitro), cellular cholesterol efflux (the ability of plasma to stimulate cholesterol efflux out of cultured fibroblasts obtained from a single human donor), glucose and insulin were determined in fasting plasma samples from 37 subjects with NFG, 36 with IFG and 22 with T2DM (no glucose lowering drug or insulin treatment; HbA1c 6.0±1.0%). Homeostasis model assessment was used to estimate pancreatic β-cell function (HOMA-β) and insulin resistance (HOMAir). RESULTS HOMA-β was lowest, whereas HOMAir was highest in T2DM (P<0.01 and P<0.001 vs. NFG). HDL anti-oxidative capacity and cellular cholesterol efflux did not differ significantly according to glucose tolerance category. In univariate analysis and after controlling for HOMAir both HDL anti-oxidative capacity (P<0.05) and cellular cholesterol efflux (P<0.01) were positively correlated with HOMA-β in T2DM, but not in NFG and IFG. In age-, sex- and HOMAir-adjusted analyses, T2DM status interacted positively with HDL anti-oxidative capacity (P=0.001) and cellular cholesterol efflux (P=0.042) on HOMA-β. HbA1c interacted similarly with HDL functionality measures on HOMA-β. CONCLUSIONS Pancreatic β-cell function relates to pathophysiologically relevant measures of HDL function in T2DM, but not in NFG and IFG. Better HDL functionality may contribute to maintenance of β-cell function in subjects with well-controlled T2DM.
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Affiliation(s)
- Robin P F Dullaart
- Department of Endocrinology, Center for Liver, Digestive and Metabolic Diseases, University Medical Center Groningen and University of Groningen, Groningen, The Netherlands.
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