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Chen MC, Lee CJ, Lin YL, Wang CH, Hsu BG. The Association between Serum Adiponectin Levels and Endothelial Function in Non-Dialysis-Dependent Chronic Kidney Disease Patients. Biomedicines 2023; 11:2174. [PMID: 37626670 PMCID: PMC10452815 DOI: 10.3390/biomedicines11082174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 07/30/2023] [Accepted: 08/01/2023] [Indexed: 08/27/2023] Open
Abstract
Adiponectin is the richest human circulating adipokine with anti-inflammatory, antioxidant, and insulin-sensitizing effects. We evaluated the association between serum adiponectin levels and endothelial function in chronic kidney disease (CKD) patients, obtaining fasting blood samples from 130 non-dialysis CKD subjects. We measured the endothelial function-represented by the vascular reactivity index (VRI)-via non-invasive digital thermal monitoring, and serum adiponectin concentrations by enzyme immunoassay kits. A total of 22 (16.9%), 39 (30.0%), and 69 (53.1%) patients had poor (VRI < 1.0), intermediate (1.0 ≤ VRI < 2.0), and good (VRI ≥ 2.0) vascular reactivity. Elevated serum blood urea nitrogen (BUN) level was negatively correlated with VRI values, but serum adiponectin and estimated glomerular filtration rate were positively associated with VRI values by univariate linear regression analysis. After applying multivariate stepwise linear regression analysis adjustment, the significantly positive association of adiponectin (p < 0.001), and the significantly negative association of log-BUN (p = 0.021) with VRI values in CKD subjects remained. In an animal study using in vitro blood-vessel myography, treatment with adiponectin enhancing acetylcholine-mediated vasorelaxation in 5/6 nephrectomy CKD mice. Our study results indicated that adiponectin concentration was positively associated with VRI values and modulated endothelial function in non-dialysis CKD patients.
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Affiliation(s)
- Ming-Chun Chen
- Department of Pediatrics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97004, Taiwan;
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (Y.-L.L.); (C.-H.W.)
| | - Chung-Jen Lee
- Department of Nursing, Tzu Chi University of Science and Technology, Hualien 97005, Taiwan;
| | - Yu-Li Lin
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (Y.-L.L.); (C.-H.W.)
- Division of Nephrology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97004, Taiwan
| | - Chih-Hsien Wang
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (Y.-L.L.); (C.-H.W.)
- Division of Nephrology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97004, Taiwan
| | - Bang-Gee Hsu
- School of Medicine, Tzu Chi University, Hualien 97004, Taiwan; (Y.-L.L.); (C.-H.W.)
- Division of Nephrology, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien 97004, Taiwan
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New Insights into Adiponectin and Leptin Roles in Chronic Kidney Disease. Biomedicines 2022; 10:biomedicines10102642. [PMID: 36289903 PMCID: PMC9599100 DOI: 10.3390/biomedicines10102642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/14/2022] [Accepted: 10/15/2022] [Indexed: 11/16/2022] Open
Abstract
Chronic kidney disease (CKD) is commonly associated with a high burden of comorbidities and poor clinical outcomes. Malnutrition–inflammation–atherosclerosis syndrome is common in the more severe stages of CKD, suggesting a close interplay for these three comorbid conditions. Both malnutrition and obesity are associated with a disturbed adipokine profile and inflammation, contributing to a higher risk of cardiovascular disease (CVD) events. Adiponectin and leptin have important roles in carbohydrate and lipid metabolism, and in the inflammatory process. The effects of adiponectin and leptin alterations in CKD, which are usually increased, and their association with the different comorbidities found in CKD, will be focused on to understand their crosstalk with the risk of CVD events. Nonetheless, although adiponectin and leptin contribute to a higher risk of CVD events, further studies are warranted to fully clarify their roles, especially when different comorbidities exist.
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Peterson SJ, Choudhary A, Kalsi AK, Zhao S, Alex R, Abraham NG. OX-HDL: A Starring Role in Cardiorenal Syndrome and the Effects of Heme Oxygenase-1 Intervention. Diagnostics (Basel) 2020; 10:E976. [PMID: 33233550 PMCID: PMC7699797 DOI: 10.3390/diagnostics10110976] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 11/17/2020] [Accepted: 11/19/2020] [Indexed: 12/14/2022] Open
Abstract
In this review, we will evaluate how high-density lipoprotein (HDL) and the reverse cholesterol transport (RCT) pathway are critical for proper cardiovascular-renal physiology. We will begin by reviewing the basic concepts of HDL cholesterol synthesis and pathway regulation, followed by cardiorenal syndrome (CRS) pathophysiology. After explaining how the HDL and RCT pathways become dysfunctional through oxidative processes, we will elaborate on the potential role of HDL dysfunction in CRS. We will then present findings on how HDL function and the inducible antioxidant gene heme oxygenase-1 (HO-1) are interconnected and how induction of HO-1 is protective against HDL dysfunction and important for the proper functioning of the cardiovascular-renal system. This will substantiate the proposal of HO-1 as a novel therapeutic target to prevent HDL dysfunction and, consequently, cardiovascular disease, renal dysfunction, and the onset of CRS.
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Affiliation(s)
- Stephen J. Peterson
- Department of Medicine, Weill Cornell Medicine, New York, NY 10065, USA;
- Department of Medicine, New York Presbyterian Brooklyn Methodist Hospital, Brooklyn, NY 11215, USA; (A.C.); (A.K.K.); (S.Z.)
| | - Abu Choudhary
- Department of Medicine, New York Presbyterian Brooklyn Methodist Hospital, Brooklyn, NY 11215, USA; (A.C.); (A.K.K.); (S.Z.)
| | - Amardeep K. Kalsi
- Department of Medicine, New York Presbyterian Brooklyn Methodist Hospital, Brooklyn, NY 11215, USA; (A.C.); (A.K.K.); (S.Z.)
| | - Shuyang Zhao
- Department of Medicine, New York Presbyterian Brooklyn Methodist Hospital, Brooklyn, NY 11215, USA; (A.C.); (A.K.K.); (S.Z.)
| | - Ragin Alex
- Department of Medicine, New York Medical College, Valhalla, NY 10595, USA;
| | - Nader G. Abraham
- Department of Medicine, New York Medical College, Valhalla, NY 10595, USA;
- Department of Pharmacology, New York Medical College, Valhalla, NY 10595, USA
- Department of Medicine, Joan C. Edwards School of Medicine, Marshall University, Huntington, WV 25701, USA
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Song SH, Oh TR, Choi HS, Kim CS, Ma SK, Oh KH, Ahn C, Kim SW, Bae EH. High serum adiponectin as a biomarker of renal dysfunction: Results from the KNOW-CKD study. Sci Rep 2020; 10:5598. [PMID: 32221363 PMCID: PMC7101406 DOI: 10.1038/s41598-020-62465-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 03/05/2020] [Indexed: 02/08/2023] Open
Abstract
High serum adiponectin is noted in several conditions of chronic kidney disease (CKD) and is a predictor for end stage renal disease. However, the relationship between adiponectin level and renal disease progression is not well established. This study aimed to determine the relationship between serum adiponectin levels and CKD progression. This prospective longitudinal study included 2238 patients from the Korean Cohort Study for Outcomes in Patients with Chronic Kidney Disease. Patients were divided into quartiles according to their serum adiponectin level. Composite renal outcome was defined as one or more of the following: initiation of dialysis or transplantation, a two-fold increase in baseline serum creatinine levels, or a 50% decline in the estimated glomerular filtration rate (eGFR) during the follow-up period. A cox proportional hazard ratio model was applied to analyze the relationship between composite renal outcome and serum adiponectin levels. Serum adiponectin level was inversely associated with eGFR (p < 0.001) and positively correlated with urine albumin-creatinine ratio. The highest quartile of serum adiponectin was associated with an increased risk of adverse renal outomes (HR, 1.39; 95%CI, 1.05-1.84; p=0.021). On time-dependent receiver operating characteristic curve analysis, predictive ability of adiponectin for renal outcomes disappeared after adjusting for eGFR. Therefore, serum adiponectin may be a biomarker of renal dysfunction rather than a true risk factor in CKD progression.
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Affiliation(s)
- Su Hyun Song
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Tae Ryom Oh
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Hong Sang Choi
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Chang Seong Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Seong Kwon Ma
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea
| | - Kook Hwan Oh
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Curie Ahn
- Department of Internal Medicine, Seoul National University Hospital, Seoul, Korea
| | - Soo Wan Kim
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea.
| | - Eun Hui Bae
- Department of Internal Medicine, Chonnam National University Medical School, Gwangju, Korea.
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Rutkowski JM, Pastor J, Sun K, Park SK, Bobulescu IA, Chen CT, Moe OW, Scherer PE. Adiponectin alters renal calcium and phosphate excretion through regulation of klotho expression. Kidney Int 2017; 91:324-337. [PMID: 27914707 PMCID: PMC5237401 DOI: 10.1016/j.kint.2016.09.016] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Revised: 08/16/2016] [Accepted: 09/08/2016] [Indexed: 12/29/2022]
Abstract
The kidney controls systemic calcium and phosphate levels and disturbances of its control mechanisms can lead to a variety of diseases. The insulin-sensitizing adipokine adiponectin is renoprotective and accelerates functional recovery following renal injury. However, unlike other adipokines, adiponectin is reduced in obesity. High adiponectin levels are also correlated with bone loss, suggestive of an additional action in mineral metabolism. Using knockout, wild-type, and adiponectin-overexpressing transgenic mice, we sought to identify the mechanistic basis for adiponectin's ability to regulate calcium and phosphate balance at the level of the kidney. Adiponectin knockout mice exhibited lower serum calcium, lower urinary calcium excretion, and markedly lower serum fibroblast growth factor 23 (FGF23) levels, although circulating klotho concentrations were significantly higher than in wild-type littermates. The transgenic mice exhibited lower bone mass and strength, particularly compared to adiponectin knockout mice. The transgenic mice were hyper-responsive to a 2% phosphate-enriched diet, exhibiting 2-fold higher serum FGF23 and concomitantly higher fractional phosphate excretion. These mice also excreted more calcium with calcium-enriched diet and had less renal klotho protein expression. In contrast, the knockout mice exhibited a smaller increase in FGF23 and maintained elevated klotho levels on both mineral challenges. Kidney-specific adiponectin expression in doxycycline-inducible adiponectin mice and adiponectin addition in vitro confirmed adiponectin's ability to reduce tubular epithelial cell klotho secretion. Thus, adiponectin alters calcium and phosphate balance and renal mineral excretion, in part, through klotho. This work highlights the profound effects of adipose tissue on renal function and has identified a new mechanism by which adiponectin may regulate bone mass.
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Affiliation(s)
- Joseph M Rutkowski
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Johanne Pastor
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Kai Sun
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Sun K Park
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - I Alexandru Bobulescu
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Christopher T Chen
- The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Orthopaedic Surgery, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Orson W Moe
- Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA; The Charles and Jane Pak Center for Mineral Metabolism and Clinical Research, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Physiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, Texas, USA; Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas, USA.
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Kim HY, Bae EH, Ma SK, Chae DW, Choi KH, Kim YS, Hwang YH, Ahn C, Kim SW. Association of serum adiponectin level with albuminuria in chronic kidney disease patients. Clin Exp Nephrol 2015; 20:443-9. [PMID: 26445954 DOI: 10.1007/s10157-015-1173-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Accepted: 09/23/2015] [Indexed: 01/06/2023]
Abstract
BACKGROUND Adiponectin, a peptide hormone secreted from adipocytes, exerts anti-diabetic, anti-atherogenic, and anti-inflammatory properties. We aimed to determine the relationship between serum adiponectin levels and albuminuria, and evaluate determinant factors for serum adiponectin in patients with chronic kidney disease (CKD). METHODS In total, 1442 CKD patients were included and divided into three groups according to their albumin-to-creatinine ratios: patients with normoalbuminuria (N = 228), microalbuminuria (N = 444), and macroalbuminuria (N = 761). Serum adiponectin was specifically assayed with a commercially available enzyme-linked immunosorbent assay kit. RESULTS Serum adiponectin was significantly higher in patients with macroalbuminuria than in those without macroalbuminuria (9.7 ± 6.0, 12.4 ± 9.0, and 14.9 ± 11.0 μg/mL in patients with normoalbuminuria, microalbuminuria, and macroalbuminuria, respectively). Univariate linear regression analysis showed that the serum adiponectin concentrations were correlated with age, the albumin-to-creatinine ratio, total cholesterol, low-density lipoprotein cholesterol, and high-density lipoprotein cholesterol, whereas they were negatively correlated with body mass index, the estimated glomerular filtration rate, and serum albumin and triglyceride levels. The stepwise regression multiple analysis showed that sex; the estimated glomerular filtration rate; body mass index; total cholesterol, high-density lipoprotein cholesterol, and triglyceride levels; and logarithm of the albumin-to-creatinine ratio were independently associated with the logarithm of serum adiponectin levels (r = 0.55, p < 0.001). CONCLUSION Serum adiponectin concentrations are higher in patients with increasing albuminuria, and these levels are associated with renal insufficiency and lipid profiles.
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Affiliation(s)
- Ha Yeon Kim
- Department of Internal Medicine, Chonnam National University Medical School, 42 Jebongro, Gwangju, 501-757, Korea
| | - Eun Hui Bae
- Department of Internal Medicine, Chonnam National University Medical School, 42 Jebongro, Gwangju, 501-757, Korea
| | - Seong Kwon Ma
- Department of Internal Medicine, Chonnam National University Medical School, 42 Jebongro, Gwangju, 501-757, Korea
| | - Dong Wan Chae
- Department of Internal Medicine, Seoul National University, Seoul, Korea
| | - Kyu Hun Choi
- Department of Internal Medicine, Severance Hospital, Yonsei University, Seoul, Korea
| | - Yong-Soo Kim
- Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul, Korea
| | - Young-Hwan Hwang
- Department of Internal Medicine, Eulji General Hospital, Eulji University, Seoul, Korea
| | - Curie Ahn
- Department of Internal Medicine, Seoul National University, Seoul, Korea
| | - Soo Wan Kim
- Department of Internal Medicine, Chonnam National University Medical School, 42 Jebongro, Gwangju, 501-757, Korea.
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Rutkowski JM, Halberg N, Wang QA, Holland WL, Xia JY, Scherer PE. Differential transendothelial transport of adiponectin complexes. Cardiovasc Diabetol 2014; 13:47. [PMID: 24552349 PMCID: PMC3932731 DOI: 10.1186/1475-2840-13-47] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 02/12/2014] [Indexed: 12/15/2022] Open
Abstract
Background Adiponectin’s effects on systemic physiology and cell-specific responses are well-defined, but little is known about how this insulin-sensitizing and anti-inflammatory adipokine reaches its target cells. All molecules face active and passive transport limitations, but adiponectin is particularly noteworthy due to the diverse size range and high molecular weights of its oligomers. Additionally, its metabolic target organs possess a range of endothelial permeability. Methods Full-length recombinant murine adiponectin was produced and oligomer fractions isolated by gel filtration. Adiponectin complex sizes were measured by dynamic light scattering to determine Stokes radii. Transendothelial transport of purified oligomers was quantitatively assessed under a number of different conditions in vitro using murine endothelial cells and in vivo using several mouse models of altered endothelial function. Results Adiponectin oligomers exhibit large transport radii that limit transendothelial transport. Oligomerization is a significant determinant of flux across endothelial monolayers in vitro; low molecular weight adiponectin is preferentially transported. In vivo sampled sera from the heart, liver, and tail vein demonstrated significantly different complex distribution of lower molecular weight oligomers. Pharmacological interventions, such as PPARγ agonist treatment, differentially affect adiponectin plasma clearance and tissue uptake. Exercise induces enhanced adiponectin uptake to oxidative skeletal muscles, wherein adiponectin potently lowers ceramide levels. In total, endothelial barriers control adiponectin transport in a cell- and tissue-specific manner. Conclusions Adiponectin oligomer efficacy in a given tissue may therefore be endothelial transport mediated. Targeting endothelial dysfunction in the metabolic syndrome through exercise and pharmaceuticals may afford an effective approach to increasing adiponectin’s beneficial effects.
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Affiliation(s)
| | | | | | | | | | - Philipp E Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA.
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Abstract
Adiponectin is a circulating bioactive hormone secreted by adipocytes as oligomers ranging in size from 90 kDa trimers and 180 kDa hexamers to larger high molecular weight oligomers that may reach 18- or 36-mers in size. While total circulating adiponectin levels correlate well with metabolic health, it is the relative distribution of adiponectin complexes that is most clinically relevant to glucose sensitivity and inflammation. High molecular weight adiponectin best mirrors insulin sensitivity, while trimeric adiponectin dominates with insulin resistance and adipose tissue inflammation. Experimental animal and in vitro models have also linked the relative fraction of high molecular weight adiponectin to its positive effects. Quantitating adiponectin size distribution thus provides a window into metabolic health and can serve as a surrogate marker for adipose tissue fitness. Here, we present a detailed protocol for isolating and quantitating adiponectin complexes in serum or plasma that has been extensively utilized for both human clinical samples and numerous animal models under various experimental conditions. Examples are presented of different adiponectin distributions and tips are provided for optimization using available equipment. Comparison of this rigorous approach to other available methods is also discussed. In total, this summary is a blueprint for the expanded quantitation and study of adiponectin complexes.
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Affiliation(s)
- Joseph M Rutkowski
- Touchstone Diabetes Center, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Philipp E Scherer
- Touchstone Diabetes Center, Department of Internal Medicine, UT Southwestern Medical Center, Dallas, Texas, USA; Department of Cell Biology, UT Southwestern Medical Center, Dallas, Texas, USA.
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Abstract
During the past 2 decades, results of both basic science and clinical studies have changed the physicians' views about adipocyte pathophysiology. Since leptin was discovered in 1994, white adipose tissue was recognized as an endocrine organ and an important source of biologically active substances with local and/or systemic action called adipokines. Inappropriate secretion of several adipokines by the excessive amount of white adipose tissue seems to participate in the pathogenesis of obesity-related pathologic processes including endothelial dysfunction, inflammation, atherosclerosis, diabetes mellitus, and chronic kidney disease. In this review endocrine action of selected adipokines (mainly leptin and adiponectin) in the context of kidney diseases is discussed. Specifically, the role of these adipokines in malnutrition, chronic kidney disease progression, and pathogenesis of cardiovascular complications is presented.
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Affiliation(s)
- Marcin Adamczak
- Department of Nephrology, Endocrinology and Metabolic Diseases, Medical University of Silesia, Katowice, Poland
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Karamifar H, Habibian N, Amirhakimi G, Karamizadeh Z, Alipour A. Adiponectin is a Good Marker for Metabolic State among Type 1 Diabetes Mellitus Patients. IRANIAN JOURNAL OF PEDIATRICS 2013; 23:295-301. [PMID: 23795252 PMCID: PMC3684474] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Accepted: 03/06/2013] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Adiponectin is secreted from adipose tissue. This hormone has a fundamental role in pathogenesis of insulin resistance, and has anti-inflammatory and anti-atherogenic effects. The objectives of this study were to compare serum adiponectin level between type 1 diabetics and healthy people and to assess its related factors, and also to determine the relationship between adiponectin and metabolic state. METHODS This was a case control study involving 60 diabetics (25 good and 35 poor metabolic controlled) and 28 healthy persons (younger than 18 years old). The data about demographic (age and sex), clinical and paraclinical characteristics [body mass index (BMI), duration of disease, puberty state, and glycosylated hemoglobin (HbA1c) and adiponectin level in serum] were collected. Determinants of adiponectin were assessed using univariate and multiple linear regression analyses. FINDINGS Mean (±SD) serum adiponectin level in healthy persons, good-controlled and poor-controlled type 1 diabetes mellitus patients were 9.16 (±4.2) µg/cc, 10.89 (±4.48)µg/cc, and 15.92 (±8.26)µg/cc, respectively. Post hoc analysis revealed that differences of adiponectin between poor- and good-controlled type 1 diabetes mellitus patients (P=0.01) and between healthy persons and poor controlled type 1 diabetes mellitus (P<0.0001) were statistically significant. Adiponectin level was associated with puberty state and BMI in healthy persons. It was associated with puberty state and HbA1c in type 1 diabetic persons. CONCLUSION Serum level of adiponectin was higher in type 1 diabetics than in healthy persons and it can be used as a good marker for metabolic control state among diabetics.
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Affiliation(s)
- Hamdollah Karamifar
- Department of Pediatrics, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Narges Habibian
- Department of Pediatrics, Shiraz University of Medical Sciences, Shiraz, Iran,Corresponding Author:Address: Shiraz University of Medical Sciences, Shiraz, IR Iran. E-mail:
| | | | - Zohre Karamizadeh
- Department of Pediatrics, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Abbas Alipour
- Department of Social Science, Mazandaran University of Medical Sciences, Sari, Iran
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Ye R, Scherer PE. Adiponectin, driver or passenger on the road to insulin sensitivity? Mol Metab 2013; 2:133-41. [PMID: 24049728 DOI: 10.1016/j.molmet.2013.04.001] [Citation(s) in RCA: 186] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Revised: 04/11/2013] [Accepted: 04/11/2013] [Indexed: 12/20/2022] Open
Abstract
Almost 20 years have passed since the first laboratory evidence emerged that an abundant message encoding a protein with homology to the C1q superfamily is highly specifically expressed in adipocytes. At this stage, we refer to this protein as adiponectin. Despite more than 10,000 reports in the literature since its initial description, we seem to have written only the first chapter in the textbook on adiponectin physiology. With every new aspect we learn about adiponectin, a host of new questions arise with respect to the underlying molecular mechanisms. Here, we aim to summarize recent findings in the field and bring the rodent studies that suggest a causal relationship between adiponectin levels in plasma and systemic insulin sensitivity in perspective with the currently available data on the clinical side.
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Affiliation(s)
- Risheng Ye
- Touchstone Diabetes Center, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, USA
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Rutkowski JM, Wang ZV, Park ASD, Zhang J, Zhang D, Hu MC, Moe OW, Susztak K, Scherer PE. Adiponectin promotes functional recovery after podocyte ablation. J Am Soc Nephrol 2013; 24:268-82. [PMID: 23334396 DOI: 10.1681/asn.2012040414] [Citation(s) in RCA: 115] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Low levels of the adipocyte-secreted protein adiponectin correlate with albuminuria in both mice and humans, but whether adiponectin has a causative role in modulating renal disease is unknown. Here, we first generated a mouse model that allows induction of caspase-8-mediated apoptosis specifically in podocytes upon injection of a construct-specific agent. These POD-ATTAC mice exhibited significant kidney damage, mimicking aspects of human renal disease, such as foot process effacement, mesangial expansion, and glomerulosclerosis. After the initial induction, both podocytes and filtration function recovered. Next, we crossed POD-ATTAC mice with mice lacking or overexpressing adiponectin. POD-ATTAC mice lacking adiponectin developed irreversible albuminuria and renal failure; conversely, POD-ATTAC mice overexpressing adiponectin recovered more rapidly and exhibited less interstitial fibrosis. In conclusion, these results suggest that adiponectin is a renoprotective protein after podocyte injury. Furthermore, the POD-ATTAC mouse provides a platform for further studies, allowing precise timing of podocyte injury and regeneration.
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Affiliation(s)
- Joseph M Rutkowski
- Touchstone Diabetes Center, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA
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Markaki A, Kyriazis J, Stylianou K, Fragkiadakis GA, Perakis K, Margioris AN, Ganotakis ES, Daphnis E. The role of serum magnesium and calcium on the association between adiponectin levels and all-cause mortality in end-stage renal disease patients. PLoS One 2012; 7:e52350. [PMID: 23285003 PMCID: PMC3527536 DOI: 10.1371/journal.pone.0052350] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2012] [Accepted: 11/12/2012] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Adiponectin (ADPN) is the most abundant adipocyte-specific cytokine that plays an important role in energy homeostasis by regulating lipid and glucose metabolism. Studies of the impact of ADPN on clinical outcomes have yielded contradictory results so far. Here, we examined the association of ADPN with serum magnesium (s-Mg) and calcium (s-Ca) levels and explored the possibility whether these two factors could modify the relationship between ADPN and all-cause mortality in patients with end-stage renal disease. METHODOLOGY/PRINCIPAL FINDINGS After baseline assessment, 47 hemodialysis and 27 peritoneal dialysis patients were followed- up for a median period of 50 months. S-Mg and s-Ca levels emerged as positive and negative predictors of ADPN levels, respectively. During the follow-up period 18 deaths occurred. There was a significant 4% increased risk for all-cause mortality for each 1-µg/ml increment of ADPN (crude HR, 1.04; 95% CI, 1.01-1.07), even after adjustment for s-Mg and s-Ca levels, dialysis mode, age, albumin and C-reactive protein. Cox analysis stratified by s-Mg levels (below and above the median value of 2.45 mg/dl) and s-Ca levels (below and above the median value of 9.3 mg/dl), revealed ADPN as an independent predictor of total mortality only in the low s-Mg and high s-Ca groups. Furthermore, low s-Mg and high s-Ca levels were independently associated with malnutrition, inflammation, arterial stiffening and risk of death. CONCLUSIONS/SIGNIFICANCE The predictive value of ADPN in all-cause mortality in end-stage renal disease patients appears to be critically dependent on s-Mg and s-Ca levels. Conversely, s-Mg and s-Ca may impact on clinical outcomes by directly modifying the ADPN's bioactivity.
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Affiliation(s)
- Anastasia Markaki
- Department of Nutrition and Dietetics, Technological Educational Institute of Crete, Crete, Greece
| | - John Kyriazis
- Department of Nephrology, General Hospital of Chios, Chios, Greece
| | - Kostas Stylianou
- Department of Nephrology, University Hospital of Heraklion, Heraklion, Crete, Greece
| | - George A. Fragkiadakis
- Department of Nutrition and Dietetics, Technological Educational Institute of Crete, Crete, Greece
| | - Kostas Perakis
- Department of Nephrology, University Hospital of Heraklion, Heraklion, Crete, Greece
| | - Andrew N. Margioris
- Department of Clinical Chemistry, School of Medicine, University of Crete, Heraklion, Crete, Greece
| | - Emmanuel S. Ganotakis
- Department of Internal Medicine, University Hospital of Heraklion, Heraklion, Crete, Greece
| | - Eugene Daphnis
- Department of Nephrology, University Hospital of Heraklion, Heraklion, Crete, Greece
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Jia T, Carrero JJ, Lindholm B, Stenvinkel P. The complex role of adiponectin in chronic kidney disease. Biochimie 2012; 94:2150-6. [DOI: 10.1016/j.biochi.2012.02.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2011] [Accepted: 02/17/2012] [Indexed: 12/25/2022]
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16
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Turer AT, Scherer PE. Adiponectin: mechanistic insights and clinical implications. Diabetologia 2012; 55:2319-26. [PMID: 22688349 DOI: 10.1007/s00125-012-2598-x] [Citation(s) in RCA: 438] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2012] [Accepted: 03/09/2012] [Indexed: 12/15/2022]
Abstract
Adiponectin is an adipocyte-derived secretory protein that has been very widely studied over the past 15 years. A multitude of different functions have been attributed to this adipokine. It has been characterised in vitro at the level of tissue culture systems and in vivo through genetic manipulation of rodent models. It is also widely accepted as a biomarker in clinical studies. Originating in adipose tissue, generally positive metabolic effects have been attributed to adiponectin. In this review, we briefly discuss the key characteristics of this interesting but very complex molecule, highlight recent results in the context of its mechanism of action and summarise some of the key epidemiological data that helped establish adiponectin as a robust biomarker for insulin sensitivity, cardiovascular disease and many additional disease phenomena.
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Affiliation(s)
- A T Turer
- Department of Medicine, University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd, Dallas, TX 75390-8521, USA.
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Schäffler A, Buechler C. CTRP family: linking immunity to metabolism. Trends Endocrinol Metab 2012; 23:194-204. [PMID: 22261190 DOI: 10.1016/j.tem.2011.12.003] [Citation(s) in RCA: 229] [Impact Index Per Article: 19.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2011] [Revised: 12/09/2011] [Accepted: 12/13/2011] [Indexed: 01/22/2023]
Abstract
It is well known that infectious and inflammatory diseases such as sepsis and severe inflammatory response syndrome are accompanied by metabolic alterations such as insulin resistance. Conversely, metabolic diseases such as visceral obesity and type 2 diabetes are characterized by high levels of proinflammatory cytokines. Metabolism and immunity are linked by proteins of dual function. Adiponectin, a member of the C1q/TNF-related protein (CTRP) family, has attracted much interest because of its anti-inflammatory and insulin-sensitizing effects. To date, 15 additional CTRP family members have been identified that might also play a role in metabolism and immunity. This review focuses on the biochemistry and pleiotropic physiological functions of CTRPs as new molecular mediators connecting inflammatory and metabolic diseases.
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Affiliation(s)
- Andreas Schäffler
- Department of Internal Medicine I, Regensburg University Medical Center, D-93042 Regensburg, Germany.
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