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Development of a cyclic-inverso AHSG/Fetuin A-based peptide for inhibition of calcification in osteoarthritis. Osteoarthritis Cartilage 2022; 31:727-740. [PMID: 36414226 DOI: 10.1016/j.joca.2022.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 11/11/2022] [Accepted: 11/14/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Ectopic calcification is an important contributor to chronic diseases, such as osteoarthritis. Currently, no effective therapies exist to counteract calcification. We developed peptides derived from the calcium binding domain of human Alpha-2-HS-Glycoprotein (AHSG/Fetuin A) to counteract calcification. METHODS A library of seven 30 amino acid (AA) long peptides, spanning the 118 AA Cystatin 1 domain of AHSG, were synthesized and evaluated in an in vitro calcium phosphate precipitation assay. The best performing peptide was modified (cyclic, retro-inverso and combinations thereof) and evaluated in cellular calcification models and the rat Medial Collateral Ligament Transection + Medial Meniscal Tear (MCLT + MMT) osteoarthritis model. RESULTS A cyclic peptide spanning AA 1-30 of mature AHSG showed clear inhibition of calcium phosphate precipitation in the nM-pM range that far exceeded the biological activity of the linear peptide variant or bovine Fetuin. Biochemical and electron microscopy analyses of calcium phosphate particles revealed a similar, but distinct, mode of action in comparison with bFetuin. A cyclic-inverso variant of the AHSG 1-30 peptide inhibited calcification of human articular chondrocytes, vascular smooth muscle cells and during osteogenic differentiation of bone marrow derived stromal cells. Lastly, we evaluated the effect of intra-articular injection of the cyclic-inverso AHSG 1-30 peptide in a rat osteoarthritis model. A significant improvement was found in histopathological osteoarthritis score and animal mobility. Serum levels of IFNγ were found to be lower in AHSG 1-30 peptide treated animals. CONCLUSIONS The cyclic-inverso AHSG 1-30 peptide directly inhibits the calcification process and holds the potential for future application in osteoarthritis.
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Lee-Ødegård S, Ueland T, Thorsby PM, Aukrust P, Michelsen AE, Halvorsen B, Drevon CA, Birkeland KI. Fetuin-A mediates the difference in adipose tissue insulin resistance between young adult pakistani and norwegian patients with type 2 diabetes. BMC Endocr Disord 2022; 22:208. [PMID: 35978354 PMCID: PMC9386965 DOI: 10.1186/s12902-022-01127-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/10/2022] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND South-Asian immigrants to Western countries have a high prevalence of type 2 diabetes mellitus (T2DM) and increased adipose tissue insulin resistance (AT-IR), as compared to their Western counterparts. Fetuin-A is a hepatokine known to influence AT-IR. AIM Can plasma fetuin-A concentrations explain an ethnic difference in adipose tissue insulin resistance? METHODS We performed a two-step euglycemic-hyperinsulinaemic clamp and measured plasma concentrations of fetuin-A and non-esterified fatty acids (NEFA), in 18 Pakistani and 21 Norwegians with T2DM (age 29-45y) in Norway. AT-IR was calculated as NEFA-suppression during the clamp. The adipokines/cytokines leptin, adiponectin, visfatin, PTX3, IL-1β, INF-γ, and IL-4 were measured in fasting plasma. Liver fat was estimated by CT-scans. RESULTS Despite a lower BMI, Pakistani patients displayed higher AT-IR than Norwegians. NEFA-suppression during clamp was lower in Pakistani than Norwegians (mean=-20.6%, 95%CI=[-40.8, -0.01] and p = 0.046). Plasma fetuin-A concentration was higher in Pakistani than Norwegians (43.4 ng/mL[12.7,74.0], p = 0.007) and correlated negatively to %NEFA-suppression during clamp (rho=-0.39, p = 0.039). Plasma fetuin-A concentration explained 22% of the ethnic difference in NEFA-suppression during the clamp. Pakistani patients exhibited higher plasma leptin and lower PTX3 levels than Norwegian, and plasma visfatin correlated positively to plasma fetuin-A levels in the Pakistani patients. We observed no correlation between plasma fetuin-A and liver fat, but fetuin-A correlated negatively with plasma IL-1β, INF-γ, and IL-4 concentrations. Plasma IL-4 concentration was lower in Pakistani than in Norwegian patients. CONCLUSION Fetuin-A may contribute to explain the discrepancy in T2DM prevalence between Pakistani and Norwegians patients by influencing AT-IR.
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Affiliation(s)
| | - Thor Ueland
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Per M Thorsby
- Hormone Laboratory, Dep of Medical Biochemistry and Biochemical endocrinology and metabolism research group, Oslo University Hospital, Aker, Oslo, Norway
| | - Pål Aukrust
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Annika E Michelsen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Bente Halvorsen
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Research Institute of Internal Medicine, Oslo University Hospital, Oslo, Norway
| | - Christian A Drevon
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Kåre I Birkeland
- Institute of Clinical Medicine, University of Oslo, Oslo, Norway
- Department of Endocrinology, Morbid Obesity and Preventive Medicine, Oslo University Hospital, Oslo, Norway
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de Haan A, Ahmadizar F, van der Most PJ, Thio CHL, Kamali Z, Ani A, Ghanbari M, Chaker L, van Meurs J, Ikram MK, van Goor H, Bakker SJL, van der Harst P, Snieder H, Kavousi M, Pasch A, Eijgelsheim M, de Borst MH. Genetic Determinants of Serum Calcification Propensity and Cardiovascular Outcomes in the General Population. Front Cardiovasc Med 2022; 8:809717. [PMID: 35097025 PMCID: PMC8795369 DOI: 10.3389/fcvm.2021.809717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 12/17/2021] [Indexed: 12/12/2022] Open
Abstract
Background:Serum calciprotein particle maturation time (T50), a measure of vascular calcification propensity, is associated with cardiovascular morbidity and mortality. We aimed to identify genetic loci associated with serum T50 and study their association with cardiovascular disease and mortality.Methods:We performed a genome-wide association study of serum T50 in 2,739 individuals of European descent participating in the Prevention of REnal and Vascular ENd-stage Disease (PREVEND) study, followed by a two-sample Mendelian randomization (MR) study to examine causal effects of T50 on cardiovascular outcomes. Finally, we examined associations between T50 loci and cardiovascular outcomes in 8,566 community-dwelling participants in the Rotterdam study.Results:We identified three independent genome-wide significant single nucleotide polymorphism (SNPs) in the AHSG gene encoding fetuin-A: rs4917 (p = 1.72 × 10−101), rs2077119 (p = 3.34 × 10−18), and rs9870756 (p = 3.10 × 10−8), together explaining 18.3% of variation in serum T50. MR did not demonstrate a causal effect of T50 on cardiovascular outcomes in the general population. Patient-level analyses revealed that the minor allele of rs9870756, which explained 9.1% of variation in T50, was associated with a primary composite endpoint of all-cause mortality or cardiovascular disease [odds ratio (95% CI) 1.14 (1.01–1.28)] and all-cause mortality alone [1.14 (1.00–1.31)]. The other variants were not associated with clinical outcomes. In patients with type 2 diabetes or chronic kidney disease, the association between rs9870756 and the primary composite endpoint was stronger [OR 1.40 (1.06–1.84), relative excess risk due to interaction 0.54 (0.01–1.08)].Conclusions:We identified three SNPs in the AHSG gene that explained 18.3% of variability in serum T50 levels. Only one SNP was associated with cardiovascular outcomes, particularly in individuals with type 2 diabetes or chronic kidney disease.
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Affiliation(s)
- Amber de Haan
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Fariba Ahmadizar
- Department of Epidemiology, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
- Julias Global Health, University Medical Center Utrecht, Utrecht, Netherlands
| | - Peter J. van der Most
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Chris H. L. Thio
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Zoha Kamali
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
- Department of Bioinformatics, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Alireza Ani
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Mohsen Ghanbari
- Department of Epidemiology, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Layal Chaker
- Department of Epidemiology, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
- Division of Endocrinology, Department of Internal Medicine, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Joyce van Meurs
- Department of Internal Medicine, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - M. Kamran Ikram
- Department of Epidemiology, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
- Department of Neurology, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Harry van Goor
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Stephan J. L. Bakker
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Pim van der Harst
- Department of Cardiology, University Medical Center Utrecht, Utrecht, Netherlands
| | - Harold Snieder
- Department of Epidemiology, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Maryam Kavousi
- Department of Epidemiology, Erasmus Medical Center, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Andreas Pasch
- Calciscon AG, Biel, Switzerland
- Institute for Physiology and Pathophysiology, Johannes Kepler University Linz, Linz, Austria
| | - Mark Eijgelsheim
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
| | - Martin H. de Borst
- Division of Nephrology, Department of Internal Medicine, University of Groningen, University Medical Center Groningen, Groningen, Netherlands
- *Correspondence: Martin H. de Borst
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Umapathy D, Subramanyam PV, Krishnamoorthy E, Viswanathan V, Ramkumar KM. Association of Fetuin-A with Thr256Ser exon polymorphism of α2-Heremans Schmid Glycoprotein (AHSG) gene in type 2 diabetic patients with overt nephropathy. J Diabetes Complications 2022; 36:108074. [PMID: 34774416 DOI: 10.1016/j.jdiacomp.2021.108074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2021] [Revised: 09/13/2021] [Accepted: 10/02/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Circulatory Fetuin-A has been well reported to elevate the risk for Diabetic Nephropathy (DN) and is associated with many vascular complications. Compelling reports have well documented that the circulatory levels of Fetuin-A directly have an impact on its AHSG (α2- Heremans- Schmid Glycoprotein) gene single nucleotide polymorphisms (SNP). Thus, in this study among the South Indian T2DM population, we aim to explore the association of AHSG Thr256Ser (rs4918) SNP in subjects with DN and correlate with the circulatory levels of Fetuin-A at various stages of DN patients. METHODS A total of 975 subjects were recruited, such as Group-I, consisting of Controls (n = 300), Group-II, with normoalbuminuria (n = 300), Group-IIIa, with incipient microalbuminuria (n = 195), Group-IIIb, with persistent macroalbuminuria (n = 180)] and were subjected for genotyping using PCR-Restriction Fragment Length Polymorphism (RFLP). Circulatory Fetuin-A was measured using sandwich enzyme-linked immunosorbent assay (ELISA). RESULTS The 'G' allele of AHSG exon-7 (C/G) SNP is significantly concomitant and conferred significant risk for normoalbuminuria subjects. In the DN subjects, the 'G' allele showed the risk for persistent macroalbuminuria. A noticeable stepwise decrease was evidenced in the circulatory Fetuin-A among persistent macroalbuminuria over incipient microalbuminuria from normoalbuminuria. Further, the circulatory Fetuin-A was lowered in DN subjects with mutant GG genotype than the wild CC. CONCLUSION AHSG Thr256Ser (rs4918) SNP was associated with renal complications among South Indian T2DM subjects.
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Affiliation(s)
| | - Paridhy Vanniya Subramanyam
- Department of Genetics, Dr. ALM PG Institute of Basic Medical Science, University of Madras, Tamilnadu, India
| | - Ezhilarasi Krishnamoorthy
- Department of Biochemistry and Molecular Genetics, Prof. M. Viswanathan Diabetes Research Centre and M.V. Hospital for Diabetes (A WHO Collaborating Centre for Research, Education & Training in Diabetes), International Diabetes Federation, Centre of Education and Centre of Excellence in Diabetes Care, Royapuram, Chennai, -600 013, Tamilnadu, India
| | - Vijay Viswanathan
- Department of Biochemistry and Molecular Genetics, Prof. M. Viswanathan Diabetes Research Centre and M.V. Hospital for Diabetes (A WHO Collaborating Centre for Research, Education & Training in Diabetes), International Diabetes Federation, Centre of Education and Centre of Excellence in Diabetes Care, Royapuram, Chennai, -600 013, Tamilnadu, India.
| | - Kunka Mohanram Ramkumar
- SRM Research Institute and Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology, Kattankulathur, Chennai, Tamil Nadu 603 203, India.
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Toprak AE, Gerin F, Erman H, Duran İ, Atalay E, Korlaelçi F, Öztürk Ü. Serum fetuin-A levels and association with hematological parameters in chronic kidney disease and hemodialysis patients. ACTA ACUST UNITED AC 2019. [DOI: 10.1515/tjb-2016-0314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Abstract
Aim
The objective of the current study is to examine the association between serum fetuin-A concentrations and some other inflammation markers neutrophil to lymphocyte ratio (NLR), mean platelet volume (MPV) and C reactive protein (CRP) in patients with chronic kidney disease (CKD) and hemodialysis.
Methods
The study subjects are composed of healthy volunteers (n = 47) and two patient groups; CKD patients (n = 26) and hemodialysis patients (n = 33). We measured serum glucose, urea, creatinine, total protein, albumin, sodium, potassium, calcium, phosphorus, iron, alkaline phosphatase, parathyroid hormone, ferritin and CRP levels by auto-analyzer and fetuin-A levels by ELISA method. Also, complete blood count parameters were analyzed and NLR was calculated.
Results
There were significant differences in serum fetuin-A concentrations, NLR and MPV values among three groups (p < 0.001, p < 0.001, p < 0.001). The correlation analyses revealed that fetuin-A negatively correlated with urea, creatinine, ferritin, and CRP concentrations (r: 0.349, 0.367, 0.399, 0.550, respectively, p < 0.05).
Conclusion
Fetuin-A is lower in CKD and hemodialysis patients than the control group; supporting as a negative acute phase reactant. Determination of serum fetuin-A, NLR and MPV might be useful to assess inflammation in CKD and hemodialysis patients.
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Can Ibanoglu M, Yasar Sanhal C, Ozgu-Erdinc S, Kara O, Yucel A, Uygur D. Maternal plasma fetuin-A levels in fetal growth restriction: A case-control study. Int J Reprod Biomed 2019; 17:487-492. [PMID: 31508574 PMCID: PMC6718885 DOI: 10.18502/ijrm.v17i7.4860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 12/24/2018] [Accepted: 04/30/2019] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Higher Fetuin-A (FA) concentrations were found to be associated with obesity and there is an interest to the relation between maternal FA and pregnancy outcomes. OBJECTIVE In this study, our aim was to evaluate the association of maternal plasma levels of FA with fetal growth restriction (FGR). MATERIALS AND METHODS 41 pregnant women with FGR and 40 controls were recruited in this case-control study between July and November 2015. At the diagnosis of FGR, venous blood samples (10 cc) were obtained for FA analysis. RESULTS Maternal plasma FA levels were significantly higher in fetal growth-restricted pregnant women compared with controls (19.3 ± 3.0 ng/ml vs 25.9 ± 6.8 ng/ml, p = 0.001). Area under receiver operating characteristic curve analysis of FA in FGR was 0.815 (95% confidence interval (CI): 0.718-0.912, p < 0.001). The maternal FA levels with values more than 22.5 ng/ml had a sensitivity of about 73.17% (95% CI: 56.79-85.25) and a specificity of about 82.5% (95% CI: 66.64-92.11) with positive and negative predictive values of about 81.08% (95% CI: 64.29-91.45) and 75% (95% CI: 59.35-86.30), respectively. Therefore, the diagnostic accuracy was obtained about 77.78%. CONCLUSION The results of this study show higher maternal plasma levels of FA in FGR. Further studies are needed in order to demonstrate the long-term effects of FA in pregnancies complicated with FGR and early prediction of FGR.
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Affiliation(s)
- Mujde Can Ibanoglu
- University of Health Sciences, Dr. Zekai Tahir Burak Women's Health Care, Education and Research Hospital, Ankara, Turkey
| | - Cem Yasar Sanhal
- University of Health Sciences, Dr. Zekai Tahir Burak Women's Health Care, Education and Research Hospital, Ankara, Turkey
| | - Seval Ozgu-Erdinc
- University of Health Sciences, Dr. Zekai Tahir Burak Women's Health Care, Education and Research Hospital, Ankara, Turkey
| | - Ozgur Kara
- University of Health Sciences, Dr. Zekai Tahir Burak Women's Health Care, Education and Research Hospital, Ankara, Turkey
| | - Aykan Yucel
- University of Health Sciences, Dr. Zekai Tahir Burak Women's Health Care, Education and Research Hospital, Ankara, Turkey
| | - Dilek Uygur
- University of Health Sciences, Dr. Zekai Tahir Burak Women's Health Care, Education and Research Hospital, Ankara, Turkey
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7
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MUTLUAY R, KONCA DEĞERTEKİN C, IŞIKTAŞ SAYILAR E, DERİCİ Ü, GÜLTEKİN S, GÖNEN S, ARINSOY ST, SİNDEL MŞ. Serum fetuin-A is associated with the components of MIAC(malnutrition, inflammation, atherosclerosis, calcification) syndrome in different stages of chronic kidney disease. Turk J Med Sci 2019; 49:327-335. [PMID: 30761853 PMCID: PMC7350863 DOI: 10.3906/sag-1809-43] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background/aim Fetuin-A, a circulating inhibitor of calcification, is a marker of inflammatory-nutritional state. We evaluated the association between serum fetuin-A levels and vascular calcification, intima-media thickness, and nutritional and inflammatory markers in different stages of chronic kidney disease (CKD). Materials and methods CKD patients were sampled for calcium-phosphate parameters and nutritional and inflammatory markers [highly sensitive C-reactive protein (hs-CRP)], and serum fetuin-A levels. Intima-media thicknesses of the common carotid arteries (CIMT) were measured. Peripheral artery calcification scores were obtained. Results A total of 238 patients were included in the study. Fetuin-A levels in patients with end-stage renal disease were significantly lower than those in patients with stage-3 and stage-4 CKD (stage-5 vs. stage-4, P < 0.001; stage-5 vs. stage-3, P < 0.001). Fetuin-A was negatively correlated with creatinine (P < 0.001), Ca × P product (P < 0.001), hs-CRP (P = 0.01), vascular calcification score (P < 0.001), and CIMT (P < 0.001), and positively correlated with BMI (P < 0.001, r = 0.30) and serum albumin (P < 0.001). Conclusion Lower levels of fetuin-A were associated with higher vascular calcification scores, CIMT, hs-CRP levels, and lower BMI and albumin. Fetuin-A deficiency may be a key element for MIAC syndrome.
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Affiliation(s)
- Rüya MUTLUAY
- Department of Nephrology, Yunus Emre State Hospital, EskişehirTurkey
| | | | - Emel IŞIKTAŞ SAYILAR
- Department of Nephrology, Edirne Sultan I. Murat State Hospital, EdirneTurkey
- * To whom correspondence should be addressed. E-mail:
| | - Ülver DERİCİ
- Department of Nephrology, Faculty of Medicine, Gazi University, AnkaraTurkey
| | - Serap GÜLTEKİN
- Department of Radiology, Faculty of Medicine, Gazi University, AnkaraTurkey
| | - Sevim GÖNEN
- Department of Nephrology, Faculty of Medicine, Gazi University, AnkaraTurkey
| | | | - Mahmut Şükrü SİNDEL
- Department of Nephrology, Faculty of Medicine, Gazi University, AnkaraTurkey
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Mattinzoli D, Ikehata M, Tsugawa K, Alfieri CM, Dongiovanni P, Trombetta E, Valenti L, Puliti A, Lazzari L, Messa P. FGF23 and Fetuin-A Interaction in the Liver and in the Circulation. Int J Biol Sci 2018; 14:586-598. [PMID: 29904273 PMCID: PMC6001652 DOI: 10.7150/ijbs.23256] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Accepted: 02/02/2018] [Indexed: 12/24/2022] Open
Abstract
Recently it has been demonstrated that Fetuin-A, an anti-inflammatory protein synthesized by the liver, is produced also in bone by an FGF23-regulated pathway. FGF23 has been also demonstrated to induce inflammatory cytokine production in the liver. This study aimed to explore if FGF23 plays a role in the Fetuin-A production in the liver cells too and the possible relationships with FGF23 pro-inflammatory effects. FGF23 and Fetuin-A were studied in liver, kidney and in plasma with immunochemistry, immunoprecipitation, western blot, chromatin immunoprecipitation, duolink, ELISA, qrtPCR methodology. FGF23 is produced, but not secreted by the liver cells. In hepatocytes and circulation, FGF23 was present only strictly linked to Fetuin-A, while Fetuin-A was found also in unbounded form. No link was observed in the kidney. FGF23 up to 600 pg/ml stimulates, while, at higher concentrations, reduces Fetuin-A expression. Notably, overall the range of concentrations, FGF23 stimulates Fetuin-A promoter, TNFα and IL6 expression. In the nucleus, FGF23 seems to act as a direct transcription factor of Fetuin-A promoter. These results suggest that FGF23 played a direct regulatory role in Fetuin-A expression in liver cells with a biphasic effect: Fetuin-A progressively increases when FGF23 increases up to 400-600 pg/mL, and declines at higher FGF23 concentrations. These results lead us to hypothesize: a) a possible epigenetic post-transcriptional regulation; b) a possible counter-regulatory effect of FGF23 induced inflammatory cytokines (TNFα/ NF-κB mechanism). This study could add an additional key for the interpretation of the possible mechanisms linking FGF23, Fetuin-A and inflammation in CKD patients and suggests a role for FGF23 as transcription factor.
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Affiliation(s)
- Deborah Mattinzoli
- Renal Research Laboratory Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Masami Ikehata
- Renal Research Laboratory Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Koji Tsugawa
- Renal Research Laboratory Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Carlo M Alfieri
- Renal Research Laboratory Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.,Unit of Nephrology, Dialysis and Renal transplant Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Paola Dongiovanni
- Internal Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Elena Trombetta
- Flow Cytometry and Experimental Hepatology Service, Clinical Chemistry and Microbiology Laboratory, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Luca Valenti
- Department of pathophysiology and transplantation, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Università degli Studi di Milano, Italy
| | - Aldamaria Puliti
- DiNOGMI, University of Genoa, Italy.,Medical Genetics Unit, Istituto Giannina Gaslini, Italy
| | - Lorenza Lazzari
- Cell Factory Unit of Cell Therapy and Cryobiology, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Piergiorgio Messa
- Renal Research Laboratory Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, 20122 Milan, Italy.,Unit of Nephrology, Dialysis and Renal transplant Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Università degli Studi di Milano, Italy
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Shelmadine BD, Bowden RG, Moreillon JJ, Cooke MB, Yang P, Deike E, Griggs JO, Wilson RL. A Pilot Study to Examine the Effects of an Anti-inflammatory Supplement on Eicosanoid Derivatives in Patients with Chronic Kidney Disease. J Altern Complement Med 2017; 23:632-638. [PMID: 28375641 DOI: 10.1089/acm.2016.0007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Chronic kidney disease (CKD) is a progressive disease with an inverse relationship between kidney function and levels of inflammation and oxidative stress. Curcumin and Boswellia serrata have been reported to exert anti-inflammatory effects on the cyclooxygenase and lipoxygenase pathways. Therefore, the purpose of this study was to study the effects of a supplement containing curcumin and B. serrata on eicosanoid derivatives in early stage CKD patients who had not initiated hemodialysis. METHODS Sixteen patients with stage 2 and stage 3 CKD (56.0 ± 16.0 years, 171.4 ± 11.9 cm, 99.3 ± 20.2 kg) were randomized into a treatment group with curcumin and B. serrata or a placebo group. The dependent variables prostaglandin E2 (PGE2), 5-hydroxyicosatetraenoic acid, 12-hydroxyicosatetraenoic acid, 15-hydroxyicosatetraenoic acid, and 13-hydroxyoctadecadienoic acid were measured both before and after 8 weeks of supplementation. Results were analyzed by using a repeated-measures analysis of covariance for compliance and body-mass index. RESULTS A significant group effect (p = 0.05), and a trend for Group × Time interaction (p = 0.056) were detected for PGE2. No significant differences were observed for any other variables. CONCLUSIONS This is the first article of baseline levels of the dependent variables in early stage CKD, and the first article to show a significant effect of these supplements on PGE2 in early stage CKD. Further studies are needed to determine whether curcumin and B. serrata may be effective means to reduce inflammation in patients with CKD.
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Affiliation(s)
| | - Rodney G Bowden
- 2 Robbins College of Health & Human Sciences, Baylor University , Waco, TX
| | - Jennifer J Moreillon
- 3 Department of Health, Human Performance and Recreation, Baylor University , Waco, TX
| | - Matthew B Cooke
- 4 College of Health and Biomedicine, Victoria University , Melbourne, Australia
| | - Peiying Yang
- 5 Integrative Medicine Research, MD Anderson, Houston, TX
| | - Erika Deike
- 6 Department of Kinesiology, Texas Lutheran University , Seguin, TX
| | | | - Ron L Wilson
- 8 Internal Medicine, Baylor Scott & White, Waco, TX
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Vashist SK, Schneider EM, Venkatesh AG, Luong JHT. Emerging Human Fetuin A Assays for Biomedical Diagnostics. Trends Biotechnol 2017; 35:407-421. [PMID: 28094081 DOI: 10.1016/j.tibtech.2016.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 11/28/2016] [Accepted: 12/14/2016] [Indexed: 12/31/2022]
Abstract
Human fetuin A (HFA) plays a prominent pathophysiological role in numerous diseases and pathophysiological conditions with considerable biomedical significance; one example is the formation of calciprotein particles in osteoporosis and impaired calcium metabolisms. With impressive advances in in vitro diagnostic assays during the last decade, ELISAs have become a workhorse in routine clinical diagnostics. Recent diagnostic formats involve high-sensitivity immunoassay procedures, surface plasmon resonance, rapid immunoassay chemistries, signal enhancement, and smartphone detection. The current trend is toward fully integrated lab-on-chip platforms with smartphone readouts, enabling health-care practitioners and even patients to monitor pathological changes in biomarker levels. This review provides a critical analysis of advances made in HFA assays along with the challenges and future prospects.
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Affiliation(s)
| | - E Marion Schneider
- Sektion Experimentelle Anaesthesiologie, University Hospital Ulm, Albert Einstein Allee 23, 89081 Ulm, Germany
| | - A G Venkatesh
- Roswell Biotechnologies Inc, 11558 Sorrento Valley Road, Suite Number 4, San Diego, CA 92121, USA
| | - John H T Luong
- Innovative Chromatography Group, Irish Separation Science Cluster (ISSC), Department of Chemistry and Analytical, Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
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Can serum fetuin-A be regarded as an inflammatory marker among patients with familial Mediterranean fever? Dig Dis Sci 2013; 58:3212-7. [PMID: 23925820 DOI: 10.1007/s10620-013-2814-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2013] [Accepted: 07/15/2013] [Indexed: 01/03/2023]
Abstract
BACKGROUND/AIM Familial Mediterranean fever (FMF), the most frequent periodic fever syndrome, is an autosomal recessive inherited disease that predominantly affects eastern Mediterranean populations. Fetuin-A is a well known negative acute-phase protein. Studies of this glycoprotein as a marker of inflammation in FMF are limited. We have investigated the relationship between serum levels of fetuin-A and inflammatory markers in patients with FMF before, during, and after FMF attacks. METHODS Sixty-seven patients with FMF were enrolled in this study. Serum fetuin-A, seruloplasmin, fibrinogen, C reactive protein (CRP), white blood cell count (WBC), calcium, and erythrocyte sedimentation rate (ESR) were measured three times: during the attack-free period, 12 h after FMF attacks, and 7 days after FMF attacks. Plasma fetuin-A concentration was measured by use of an enzyme-linked immunoassay (ELISA) kit. Correlations and differentiation between the serum fetuin-A and other inflammatory markers in patients with FMF were investigated by use of the paired-samples T test and the Pearson correlation test (p < 0.01). RESULTS Serum fetuin-A levels of all FMF patients in the attack period were significantly lower than in the attack-free period (p < 0.001). In contrast, serum seruloplasmin (p < 0.05), fibrinogen (p < 0.001), CRP (p < 0.05), WBC (p < 0.05), and ESR (p < 0.05) were all significantly higher than in the attack-free period. Plasma fetuin-A is significantly and inversely highly correlated with the other inflammatory markers. CONCLUSION Fetuin-A might be a novel indicator of disease activity in patients with FMF and could be used as an adjunctive marker for differentiation of FMF attacks. The negative correlation between serum fetuin-A and other inflammatory markers may also be indicative of inflammation-dependent downregulation of fetuin-A expression in FMF patients.
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Low fetuin-A level in migraine: a case–control study. Neurol Sci 2013; 35:271-5. [DOI: 10.1007/s10072-013-1504-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2013] [Accepted: 07/08/2013] [Indexed: 12/17/2022]
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Moreillon JJ, Bowden RG, Deike E, Griggs J, Wilson R, Shelmadine B, Cooke M, Beaujean A. The use of an anti-inflammatory supplement in patients with chronic kidney disease. JOURNAL OF COMPLEMENTARY & INTEGRATIVE MEDICINE 2013; 10:/j/jcim.2013.10.issue-1/jcim-2012-0011/jcim-2012-0011.xml. [PMID: 23828329 DOI: 10.1515/jcim-2012-0011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/17/2012] [Indexed: 01/04/2023]
Abstract
Chronic kidney disease (CKD) is characterized by a continuous reduction in kidney function, increased inflammation, and reduced antioxidant capacity. The objective of this study was to assess the effects of a herbal supplement on systemic inflammation and antioxidant status in non-dialysis CKD patients. Sixteen patients with CKD (56.0±16.0 yrs, 171.4±11.9 cm, 99.3±20.2 kg) were randomly chosen to receive a herbal supplement composed of Curcuma longa and Boswellia serrata, or placebo. Plasma levels of interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), glutathione peroxidase (GPx), and serum C-reactive protein (CRP) were measured at baseline and 8 weeks. Baseline data demonstrated elevated inflammation and low antioxidant levels. A significant time effect (p=0.03) and time x compliance interaction effect (p=0.04) were observed for IL-6. No significant differences were observed for any other variables. This study demonstrates that mild and moderate CKD is associated with chronic inflammation and low antioxidant activity. Systemic inflammation and impaired antioxidant status may be greater in CKD populations with multiple comorbidities. Curcumin and Boswellia serrata are safe and tolerable and helped to improve the levels of an inflammatory cytokine.
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Knoll F, Zitt E, Intemann D, Lhotta K. Juvenile elastic arteries after 28 years of renal replacement therapy in a patient with complete complement C4 deficiency. BMC Nephrol 2012. [PMID: 23199021 PMCID: PMC3536710 DOI: 10.1186/1471-2369-13-161] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Complement activation products are present in atherosclerotic plaques. Recently, binding of complement to elastin and collagen in the aortic wall has been demonstrated, suggesting a role of complement in the development aortic stiffness and atherosclerosis. The definitive role of complement in atherosclerosis and arteriosclerosis, however, remains unclear. CASE PRESENTATION We here describe a patient with hereditary complete deficiency of complement C4 suffering from Henoch-Schoenlein purpura and on renal replacement therapy for twenty-eight years. The patient had the full range of risk factors for vascular damage such as hypertension, volume overload, hyperphosphatemia and hyperparathyroidism. Despite that, his carotid artery intima media thickness was below the normal range and his pulse wave velocity was normal. In contrast, the patient's coronary and peripheral muscular arteries were heavily calcified. CONCLUSION This case supports the hypothesis that complement plays an important role in the development of stiffness of elastic arteries. We speculate that inability to activate complement by the classical or lectin pathways protected the patient from atherosclerosis, arteriosclerosis, stiffening and calcification of the aorta and carotid arteries. Inhibition of complement activation may be a potential target for prophylactic and therapeutic interventions.
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Affiliation(s)
- Florian Knoll
- Department of Nephrology and Dialysis, Feldkirch Academic Teaching Hospital, Carinagasse 47, Feldkirch 6800, Austria.
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Drueke TB, Massy ZA. Role of vitamin D in vascular calcification: bad guy or good guy? Nephrol Dial Transplant 2012; 27:1704-7. [DOI: 10.1093/ndt/gfs046] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Hirakawa S, Imaeda D, Nakayama K, Udaka M, Kim EY, Kunisue T, Ogawa M, Matsuda T, Matsui S, Petrov EA, Batoev VB, Tanabe S, Iwata H. Integrative assessment of potential effects of dioxins and related compounds in wild Baikal seals (Pusa sibirica): application of microarray and biochemical analyses. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2011; 105:89-99. [PMID: 21703212 DOI: 10.1016/j.aquatox.2011.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Revised: 04/25/2011] [Accepted: 05/07/2011] [Indexed: 05/31/2023]
Abstract
We have previously indicated that accumulation of chlorinated dioxins and related compounds (DRCs) induced cytochrome P450 (CYP) 1A1, 1A2 and 1B1 isozymes in the liver of wild Baikal seals (Pusa sibirica). Here we attempt to assess the potential effects of DRCs triggered by the induction of these CYP1 isozymes in this species, using an integrative approach, combining gene expression monitoring and biochemical assays. To screen genes that may potentially respond to the exposure of DRCs, we constructed a custom cDNA oligo array that can target mRNAs in Baikal seals, and monitored hepatic mRNA expression levels in the wild population. Correlation analyses between the hepatic total 2,3,7,8-tetrachlorodibenzo-p-dioxin toxic equivalents (TEQs) and mRNA levels supported our previous findings that high accumulation of DRCs induces the transcription of CYP1A1, CYP1A2 and CYP1B1 genes. In addition, our integrative assessment indicated that the chronic exposure to DRCs may alter the hepatic transcript levels of genes related to oxidative stress, Fe ion homeostasis, and inflammatory responses. The expression levels of CYP1A2 showed significant positive correlations with levels of malondialdehyde, a biomarker of lipid peroxidation, and of etheno-dA, a DNA adduct, suggesting that the lipid peroxidation may be enhanced through the production of reactive oxygen species (ROS) triggered by CYP1A2 induction. Moreover, there was a positive correlation between heme oxygenase activities and malondialdehyde levels, suggesting the prompted heme degradation by ROS. Fetuin-A levels, which are suppressed by inflammation, showed a significant negative correlation with TEQ levels, and hepcidin levels, which are conversely increased by inflammation, had significant positive correlations with malondialdehyde and etheno-dA levels, implying the progression of inflammation by DRC-induced oxidative stress. Taken together, we propose here that wild Baikal seals may suffer from effects of chronic exposure to DRCs on the induction of CYP1 isozymes, followed by increased oxidative stress, heme degradation and inflammation.
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Affiliation(s)
- Shusaku Hirakawa
- Center for Marine Environmental Studies, Ehime University, Bunkyo-cho 2-5, Matsuyama 790-8577, Japan
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Roos M, Heinemann FM, Lindemann M, Horn PA, Lutz J, Stock K, Thürmel K, Baumann M, Witzke O, Heemann U. Fetuin-A Pretransplant Serum Levels, Kidney Allograft Function and Rejection Episodes: A 3-Year Posttransplantation Follow-Up. ACTA ACUST UNITED AC 2011; 34:328-33. [DOI: 10.1159/000327848] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Accepted: 03/27/2011] [Indexed: 01/11/2023]
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Affiliation(s)
- Sophie E. P. New
- Center for Interdisciplinary Cardiovascular Sciences, Brigham and Women's Hospital
| | - Elena Aikawa
- Center for Interdisciplinary Cardiovascular Sciences, Brigham and Women's Hospital
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Abstract
Vitamin D is a multifunctional hormone that can affect many essential biological functions, ranging from the immune regulation to mineral ion metabolism. A close association between altered activity of vitamin D and vascular calcification has been reported in various human diseases, including in patients with atherosclerosis, osteoporosis, and chronic kidney disease (CKD). Vascular calcification is a progressive disorder and is a major determinant of morbidity and mortality of the affected patients. Experimental studies have shown that excessive vitamin D activities can induce vascular calcification, and such vascular pathology can be reversed by reducing vitamin D activities. The human relevance of these experimental studies is not clear, as vitamin D toxicity is relatively rare in the general population. Contrary to the relationship between vitamin D and vascular calcification, in experimental uremic models, low levels of vitamin D were shown to be associated with extensive vascular calcification, a phenomenon that is very similar to the vascular pathology seen in patients with CKD. The current treatment approach of providing vitamin D analogs to patients with CKD often poses a dilemma, as studies linked vitamin D treatment to subsequent vascular calcification. Recent genetic studies, however, have shown that vascular calcification can be prevented by reducing serum phosphate levels, even in the presence of extremely high serum 1,25-dihydroxyvitamin D and calcium levels. This article will briefly summarize the dual effects of vitamin D in vascular calcification and will provide evidence of vitamin D-dependent and -independent vascular calcification.
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Smith ER, Ford ML, Tomlinson LA, Rajkumar C, Holt SG. Reply. Nephrol Dial Transplant 2010. [DOI: 10.1093/ndt/gfq285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Kebapcilar AG, Kebapcilar L, Taner CE, Bozkaya G, Sahin G, Gokulu SG. Is increased maternal endothelin-1 concentration associated with neonatal asphyxia and preterm delivery in intrahepatic cholestasis of pregnancy? Arch Gynecol Obstet 2009; 282:617-21. [PMID: 19862540 DOI: 10.1007/s00404-009-1261-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2009] [Accepted: 10/08/2009] [Indexed: 12/27/2022]
Abstract
OBJECTIVES To evaluate plasma endothelin-1 (ET-1) and fetuin-A concentrations in women with intrahepatic cholestasis of pregnancy (ICP) and to determine whether there is any association between these parameters and fetal asphyxia. METHODS We carried out a prospective case-control study consisting of 32 women with ICP at third trimester of pregnancy and 32 pregnant women without ICP. Blood samples from maternal peripheral venous circulation were collected and ET-1 and fetuin-A levels were determined from the plasma samples. Pulse-wave Doppler and Apgar scores were also recorded. RESULTS ET-1 concentrations were significantly higher in ICP patients. No difference was observed in fetuin-A levels between the two groups. Six newborns were declared as asphyctic (APGAR score at the 5 min <7). Maternal ET-1 levels did not correlate with the APGAR score at 5 min, total bile acid (TBA) and umbilical artery systolic/diastolic ratio with ICP patients. TBA levels were positively correlated with umbilical artery systolic/diastolic ratio negatively correlated with APGAR score at the 1' and 5'-Apgar score in all subjects. Plasma ET-1 concentration was higher in the preterm neonates of mothers with ICP compared with normal term neonates of mothers. CONCLUSIONS Although these data did not show evidence that maternal ET-1 would be associated with fetal distress, we can speculate that maternal ET-1 may be playing a role in the underlying pathology regarding microvascular dysfunction especially in the preterm neonates of mothers with ICP. Elevated TBA levels may increase the risk of asphyxia whereas fetuin-a (as an anti-inflammation marker) does not seem to have effect in women with ICP.
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Bláha V, Mistrík E, Dusilová-Sulková S, Kalousová M, Andrýs C, Bláha M, Sobotka L. Circulating fetuin-A predicts early mortality in chronic hemodialysis patients. Clin Biochem 2009; 42:996-1000. [PMID: 19341719 DOI: 10.1016/j.clinbiochem.2009.03.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2008] [Revised: 03/16/2009] [Accepted: 03/19/2009] [Indexed: 11/24/2022]
Abstract
OBJECTIVES The purpose of this study was to assess whether low serum levels of fetuin-A are potential biochemical predictor of early and/or late survival in chronic hemodialysis (HD) patients. DESIGN AND METHODS We measured serum levels of fetuin-A in 67 patients on chronic HD, and correlated it to 3, 12, and 24 months mortality. RESULTS Cumulative death rate was 7%, 19%, and 37% deaths at 3, 12, and 24 months. Serum fetuin-A was significantly lower in 3 months and 12 months non-survivals (p<0.001), but not in 24 months non-survivals. Kaplan-Meier analyses based on fetuin-A tertiles showed statistically significantly increased probability of death up to 12 months of follow-up for decreasing fetuin-A concentrations (p<0.008). CONCLUSIONS Fetuin-A as a circulating inhibitor of vascular calcification was significant predictor of early mortality in chronic HD patients but did not appear as a fair marker for later survival.
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Affiliation(s)
- Vladimír Bláha
- Department Metabolism and Gerontology, University Hospital and Medical Faculty, Charles University, Hradec Králové, Czech Republic.
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