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Talari NK, Mattam U, Kaminska D, Sotomayor-Rodriguez I, Rahman AP, Péterfy M, Pajukanta P, Pihlajamäki J, Chella Krishnan K. Hepatokine ITIH3 protects against hepatic steatosis by downregulating mitochondrial bioenergetics and de novo lipogenesis. iScience 2024; 27:109709. [PMID: 38689636 PMCID: PMC11059128 DOI: 10.1016/j.isci.2024.109709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 02/16/2024] [Accepted: 04/06/2024] [Indexed: 05/02/2024] Open
Abstract
Recent studies demonstrate that liver secretory proteins, also known as hepatokines, regulate normal development, obesity, and simple steatosis to non-alcoholic steatohepatitis (NASH) progression. Using a panel of ∼100 diverse inbred strains of mice and a cohort of bariatric surgery patients, we found that one such hepatokine, inter-trypsin inhibitor heavy chain 3 (ITIH3), was progressively lower in severe non-alcoholic fatty liver disease (NAFLD) disease states highlighting an inverse relationship between Itih3/ITIH3 expression and NAFLD severity. Follow-up animal and cell culture models demonstrated that hepatic ITIH3 overexpression lowered liver triglyceride and lipid droplet accumulation, respectively. Conversely, ITIH3 knockdown in mice increased the liver triglyceride in two independent NAFLD models. Mechanistically, ITIH3 reduced mitochondrial respiration and this, in turn, reduced liver triglycerides, via downregulated de novo lipogenesis. This was accompanied by increased STAT1 signaling and Stat3 expression, both of which are known to protect against NAFLD/NASH. Our findings indicate hepatokine ITIH3 as a potential biomarker and/or treatment for NAFLD.
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Affiliation(s)
- Noble Kumar Talari
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Ushodaya Mattam
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Dorota Kaminska
- Department of Medicine, Division of Cardiology, University of California Los Angeles, Los Angeles, CA, USA
- Institute of Public Health and Clinical Nutrition, Department of Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Irene Sotomayor-Rodriguez
- Medical Sciences Baccalaureate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Afra P. Rahman
- Medical Sciences Baccalaureate Program, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Miklós Péterfy
- Department of Basic Medical Sciences, Western University of Health Sciences, Pomona, CA, USA
| | - Päivi Pajukanta
- Department of Human Genetics, David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA, USA
- Institute for Precision Health, David Geffen School of Medicine at UCLA, University of California Los Angeles, Los Angeles, CA, USA
| | - Jussi Pihlajamäki
- Institute of Public Health and Clinical Nutrition, Department of Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
- Department of Medicine, Endocrinology and Clinical Nutrition, Kuopio University Hospital, Kuopio, Finland
| | - Karthickeyan Chella Krishnan
- Department of Pharmacology and Systems Physiology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
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Prediction of Type 2 Diabetes at Pre-diabetes Stage by Mass Spectrometry: A Preliminary Study. Int J Pept Res Ther 2022. [DOI: 10.1007/s10989-022-10419-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Lu Y, Li Y, Sun Y, Ma S, Zhang K, Tang X, Chen A. Differences in energy metabolism and mitochondrial redox status account for the differences in propensity for developing obesity in rats fed on high-fat diet. Food Sci Nutr 2021; 9:1603-1613. [PMID: 33747472 PMCID: PMC7958544 DOI: 10.1002/fsn3.2134] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 12/25/2022] Open
Abstract
Obesity is a metabolic disease that is accompanied by oxidative stress. Mitochondrial dysfunction is closely associated with the occurrence and development of obesity. However, it is unclear if there are differences in mitochondrial redox homeostasis and energy metabolism between obesity-prone (OP) and obesity-resistant (OR) individuals and if these differences account for the different susceptibilities to developing obesity. The present study aimed to compare the regulation of energy metabolism between OP and OR rats during high-fat diet (HFD)-induced oxidative stress. Male Sprague Dawley rats were randomly divided into the control group and the HFD group. The HFD group was further divided into the OP and OR groups based on body weight gain (upper 1/3 for OP; lower 1/3 for OR) after eight weeks on HFD. Rats were sacrificed at the 8th and 20th week, and serum and organs were collected. At 8 weeks, HFD decreased mitochondrial antioxidant enzyme activity and increased the production of ROS in the OP rats, which was accompanied by unusual mitochondrial oxidative phosphorylation, reduced mitochondrial membrane potential (MMP), and decreased ATP production. When the feeding period was extended beyond the 8 weeks, the energy expenditure of the OP rats reduced further, resulting in elevated blood lipids and glucose levels and increased body weight. In contrast, the OR rats had higher mitochondrial antioxidant enzyme activity and normal redox homeostasis throughout the period, which was beneficial in energy utilization and ATP production. Thus, the increase in energy expenditure in the OR rats reduced the HFD-induced weight gain. Mitochondrial function and antioxidant defense might be involved in the different propensities for developing obesity. Consequently, the ability of OR rats to resist obesity may be attributed to their ability to maintain mitochondrial function and redox balance.
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Affiliation(s)
- Yipin Lu
- State Key Laboratory of Food Science and TechnologyJiangnan UniversityWuxiChina
- School of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Yingrui Li
- School of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Yongjuan Sun
- National Engineering Research Center for Functional FoodJiangnan UniversityWuxiChina
| | - Shuhua Ma
- State Key Laboratory of Food Science and TechnologyJiangnan UniversityWuxiChina
- School of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Kai Zhang
- Collaborative innovation center of food safety and quality control in Jiangsu ProvinceJiangnan UniversityWuxiChina
| | - Xue Tang
- State Key Laboratory of Food Science and TechnologyJiangnan UniversityWuxiChina
- School of Food Science and TechnologyJiangnan UniversityWuxiChina
| | - Ailing Chen
- Translational Medicine LaboratoryResearch Institute for Reproductive Health and Genetic DiseasesThe Affiliated Wuxi Maternity and Child Health Care Hospital of Nanjing Medical UniversityWuxiChina
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Gabuza KB, Sibuyi NRS, Mobo MP, Madiehe AM. Differentially expressed serum proteins from obese Wistar rats as a risk factor for obesity-induced diseases. Sci Rep 2020; 10:12415. [PMID: 32709962 PMCID: PMC7381623 DOI: 10.1038/s41598-020-69198-2] [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: 03/03/2020] [Accepted: 07/07/2020] [Indexed: 11/09/2022] Open
Abstract
Obesity is a chronic disease that negatively affects life expectancy through its association with life-threatening diseases such as cancer and cardiovascular diseases. Expression proteomics combined with in silico interaction studies are used to uncover potential biomarkers and the pathways that promote obesity-related complications. These biomarkers can either aid in the development of personalized therapies or identify individuals at risk of developing obesity-related diseases. To determine the serum protein changes, Wistar rats were fed standard chow (low fat, LF), or chow formulated high fat (HF) diets (HF1, HF2 and HF3) for 8 and 42 weeks to induce obesity. Serum samples were collected from lean and obese rats at these time points. The serum samples were precipitated using trichloroacetic acid (TCA)/acetone and analyzed by 2-Dimensional SDS-PAGE. Serum protein profiles were examined using mass spectrometry (MS)-based proteomics and validated by western blotting. Protein-protein interactions among the selected proteins were studied in silico using bioinformatics tools. Several proteins showed differences in expression among the three HF diets when compared to the LF diet, and only proteins with ≥ twofold expression levels were considered differentially expressed. Apolipoprotein-AIV (APOA4), C-reactive protein (CRP), and alpha 2-HS glycoprotein (AHSG) showed differential expression at both 8 and 42 weeks, whereas alpha 1 macroglobulin (AMBP) was differentially expressed only at 8 weeks. Network analysis revealed some interactions among the proteins, an indication that these proteins might interactively play a crucial role in development of obesity-induced diseases. These data show the variation in the expression of serum proteins during acute and chronic exposure to high fat diet. Based on the expression and the in-silico interaction these proteins warrant further investigation for their role in obesity development.
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Affiliation(s)
| | | | - Mmabatho Peggy Mobo
- Department of Biotechnology, University of the Western Cape, Bellville, Cape Town, 7535, South Africa
| | - Abram Madimabe Madiehe
- Department of Biotechnology, University of the Western Cape, Bellville, Cape Town, 7535, South Africa.
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Jang K, Tong T, Lee J, Park T, Lee H. Altered Gene Expression Profiles in Peripheral Blood Mononuclear Cells in Obese Subjects. Obes Facts 2020; 13:375-385. [PMID: 32544907 PMCID: PMC7445570 DOI: 10.1159/000507817] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 04/02/2020] [Indexed: 12/17/2022] Open
Abstract
INTRODUCTION Gene expression profiles in human peripheral blood mononuclear cells (PBMCs) may act as a useful tool to better understand obesity. We investigated gene expression levels in PMBCs for possible differences between obese and non-obese subjects (19-55 years) and evaluated correlations between gene expression in PBMCs and clinical obesity indices. METHODS Body weight, BMI, fat amount, fat percentage, waist/hip ratio, leptin, and adiponectin levels were determined in 30 obese and 20 non-obese subjects. Expression levels of 19 genes, which were differentially expressed by clinical obesity indices in the PBMCs of high fat-fed rats, were determined in their PBMCs using real-time PCR. RESULTS The expression of 9 of 19 previously selected genes was significantly correlated with one or more clinical obesity indices. Both TFEC and CCL2 expression were negatively correlated with BMI, fat amount, fat percentage, waist/hip ratio, and leptin concentration. Similarly, TNFAIP2, VCAN, ASSI, IRF1, and HK3 expression negatively correlated with some clinical obesity indices, such as TNFAIP2 for BMI, fat amount, fat percentage, and waist/hip ratio, VCAN for fat amount, fat percentage, and waist/hip ratio, ASS1 for BMI and fat amount, IRF1 for BMI, fat amount, and fat percentage, and HK3 for fat amount. In contrast, both TNF-α and LPL expression were positively correlated with waist/hip ratio. CONCLUSION We identified 9 of 19 genes in human PBMCs that significantly correlated with one or more clinical obesity indices. Because these genes have a mechanistic basis for the development or progression of obesity and its metabolic derangements, they may help to determine possible underlying mechanisms for obesity.
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Affiliation(s)
- Kyungho Jang
- Center for Clinical Pharmacology, Biomedical Research Institute, Jeonbuk National University Hospital, Jeonju, Republic of Korea
| | - Tao Tong
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jinhui Lee
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, Yonsei University, Seoul, Republic of Korea
| | - Taesun Park
- Department of Food and Nutrition, Brain Korea 21 PLUS Project, Yonsei University, Seoul, Republic of Korea
- **Taesun Park, Department of Food and Nutrition, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul 120749 (South Korea),
| | - Howard Lee
- Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, Seoul, Republic of Korea
- Department of Molecular Medicine and Biopharmaceutical Sciences, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, Republic of Korea
- *Howard Lee, Department of Clinical Pharmacology and Therapeutics, Seoul National University College of Medicine and Hospital, 103 Daehak-ro, Jongno-gu, Seoul 110799 (South Korea),
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Kim SW, Choi JW, Yun JW, Chung IS, Cho HC, Song SE, Im SS, Song DK. Proteomics approach to identify serum biomarkers associated with the progression of diabetes in Korean patients with abdominal obesity. PLoS One 2019; 14:e0222032. [PMID: 31504048 PMCID: PMC6736247 DOI: 10.1371/journal.pone.0222032] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 08/20/2019] [Indexed: 12/25/2022] Open
Abstract
Type 2 diabetes is a metabolic disease with a group of metabolic derangements and inflammatory reactants in the serum. Despite the substantial public health implications, markers of diabetes progression with abdominal obesity are still needed to facilitate early detection and treatment. In this study, we performed a proteomic approach to identify differential target proteins underlying diabetes progression in patients with abdominal obesity. Proteomic differences were investigated in the serum of controls and patients with prediabetes or diabetes with or without abdominal obesity by 2-DE combined with MALDI-TOF-MS. Proteomics data were validated by western blot analyses and major protein-protein interactions were assessed using a network analysis with String database. Among 245 matched protein spots, 36 exhibited marked differences in normal patients with abdominal obesity, prediabetes, and diabetes compared to levels in normal patients without abdominal obesity. Seven (Alpha-1-antichymotrypsin, Alpha-1-antitrypsin, Apolipoprotein A-I, haptoglobin, retinol-binding protein 4, transthyretin, and zinc-alpha2-glycoprotein) of these spots exhibited significant differences between normal and prediabetes/diabetes patients. After a network analysis, functional annotation using Gene Ontology indicated that most of the identified proteins were involved in lipid transport, lipid localization, and the regulation of serum lipoprotein particle levels. Our results indicated that variation in the levels of these identified protein biomarkers has been reported in normal, prediabetes and diabetic Assessment of the levels of these biomarkers may contribute to the development of biomarkers for not only early diagnosis but also in prognosis of diabetes mellitus type 2.
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Affiliation(s)
- Sang Woo Kim
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung-si, Gangwon-do, South Korea
- Catholic Kwandong University, International St. Mary’s Hospital, Incheon Metropolitan City, South Korea
| | - Jung-Won Choi
- Institute for Bio-Medical Convergence, College of Medicine, Catholic Kwandong University, Gangneung-si, Gangwon-do, South Korea
- Catholic Kwandong University, International St. Mary’s Hospital, Incheon Metropolitan City, South Korea
| | - Jong Won Yun
- Department of Biotechnology, Daegu University, Kyungsan, Kyungbuk, South Korea
| | - In-Sung Chung
- Division of Occupational and Environmental Medicine and Department of Preventive Medicine, Keimyung, University School of Medicine, Daegu, South Korea
| | - Ho Chan Cho
- Department of Internal Medicine, Keimyung, University School of Medicine, Daegu, South Korea
| | - Seung-Eun Song
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung, University School of Medicine, Daegu, South Korea
| | - Seung-Soon Im
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung, University School of Medicine, Daegu, South Korea
- * E-mail: (SSI); (DKS)
| | - Dae-Kyu Song
- Department of Physiology and Obesity-mediated Disease Research Center, Keimyung, University School of Medicine, Daegu, South Korea
- * E-mail: (SSI); (DKS)
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Serum fetuin-B level is an independent marker for nonalcoholic fatty liver disease in patients with type 2 diabetes. Eur J Gastroenterol Hepatol 2019; 31:859-864. [PMID: 30601337 DOI: 10.1097/meg.0000000000001354] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Previous studies have assessed serum fetuin-B and its relation to nonalcoholic fatty liver disease (NAFLD) and type 2 diabetes mellitus (T2DM) and as a link between them through inducing insulin resistance (IR). Therefore, we examined the potential of serum fetuin-B to be an independent marker for NAFLD in patients with T2DM. PATIENTS AND METHODS The study group consisted of 270 patients with T2DM. Clinical and laboratory features were evaluated. The NAFLD severity was graded by ultrasound into three subgroups: grade 0 (no fatty liver), grade 1 (mild fatty liver), and grade 2-3 (medium to severe fatty liver). Fetuin-B, retinol-binding protein-4, and adiponectin were measured. RESULTS Patients with grade 2-3 NAFLD had high fetuin-B levels in comparison with non-NAFLD group. Age and sex adjusted fetuin-B demonstrated positive correlations with triglycerides, γ-glutamyl transferase, fasting plasma glucose, 2-h postprandial plasma glucose, homeostasis model assessment of IR, fasting insulin, glycated hemoglobin, high-sensitivity C-reactive protein, and estimated glomerular filtration rate, but it had a negative correlation with serum creatinine. Adiponectin level was decreased with increasing NAFLD severity, but no difference was found in retinol-binding protein-4. The estimated odds ratio (OR) for the occurrence of grade 2-3 NAFLD was increased significantly with increasing levels of fetuin-B (OR: 3.92; 95% confidence interval: 2.14-8.32 vs. OR: 8.91; 95% confidence interval: 4.22-18.41). The OR of fetuin-B in the uppermost tertile group was still significant after controlling for homeostasis model assessment of IR, glycated hemoglobin, waist circumference, BMI, hepatic enzymes, high-density lipoprotein cholesterol, triglycerides, and high-sensitivity C-reactive protein. CONCLUSIONS Our study demonstrated that serum fetuin-B had an independent association with NAFLD in patients with T2DM.
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Walker GE, Follenzi A, Bruscaggin V, Manfredi M, Bellone S, Marengo E, Maiuri L, Prodam F, Bona G. Fetuin B links vitamin D deficiency and pediatric obesity: Direct negative regulation by vitamin D. J Steroid Biochem Mol Biol 2018; 182:37-49. [PMID: 29684480 PMCID: PMC6092561 DOI: 10.1016/j.jsbmb.2018.04.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 03/30/2018] [Accepted: 04/17/2018] [Indexed: 12/13/2022]
Abstract
Vitamin D (VD) deficiency (VDD) correlates to obesity, with VD a recognized mediator of metabolic diseases. From a previous proteomic study identifying adiponectin as a link between VDD and pediatric obesity, herein we analysed another protein (SSP2301) increased with VDD. A focused 2D-electrophoretic analysis identified 4 corresponding plasma proteins, with one predicted to be fetuin B (FETUB). FETUB was studied due to its emerging role in metabolic diseases and cytogenetic location (3q27.3) with adiponectin. Results were confirmed in obese children, where plasma FETUB was higher with VDD. A direct effect by 1α,25-(OH)2D3 on hepatocellular FETUB synthesis was observed, with a time and dose dependent reduction. Further, we demonstrated the VD-receptor (VDR) is key, with FETUB "released" with VDR silencing. Finally, VD supplementation (6weeks) to juvenile mice fed a standard diet, reduced plasma FETUB. Only at 22weeks did liver FETUB correspond to plasma FETUB, highlighting the contribution of other VD-responsive tissues. Overall, FETUB is a key protein linking VDD to pediatric obesity. With an emerging role in metabolic diseases, we demonstrate that VD/VDR directly regulate FETUB.
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Affiliation(s)
- Gillian E Walker
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy.
| | - Antonia Follenzi
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy
| | | | - Marcello Manfredi
- Isalit S.R.L., Department of Science Innovation and Technology, Università del Piemonte Orientale, Novara, Italy
| | - Simonetta Bellone
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy; Division of Pediatrics, Università del Piemonte Orientale, Novara, Italy
| | - Emilio Marengo
- Isalit S.R.L., Department of Science Innovation and Technology, Università del Piemonte Orientale, Novara, Italy
| | - Luigi Maiuri
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy; Division of Pediatrics, Università del Piemonte Orientale, Novara, Italy
| | - Flavia Prodam
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy; Division of Pediatrics, Università del Piemonte Orientale, Novara, Italy
| | - Gianni Bona
- Department of Health Sciences, Università del Piemonte Orientale, Novara, Italy; Division of Pediatrics, Università del Piemonte Orientale, Novara, Italy
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Zhu K, Wang Y, Shu P, Zhou Q, Zhu J, Zhou W, Du C, Xu C, Liu X, Tang L. Increased serum levels of fetuin B in patients with coronary artery disease. Endocrine 2017; 58:97-105. [PMID: 28822077 DOI: 10.1007/s12020-017-1387-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Accepted: 07/27/2017] [Indexed: 01/22/2023]
Abstract
BACKGROUND Recent evidence indicates a pivotal role for fetuin B, one of the cystatin superfamily of cysteine protease inhibitors, in the pathogenesis of metabolic diseases. This study investigated whether serum fetuin B levels are associated with the presence of coronary artery disease. METHODS Serum fetuin B levels were assessed in 87 patients with coronary artery disease (41 with acute coronary syndromes and 46 with stable angina pectoris) and 87 healthy controls using an enzyme-linked immunosorbent assay. The association of serum fetuin B levels with cardiac risk factors was analyzed. RESULTS Serum fetuin B levels were significantly higher in patients with coronary artery disease than those in healthy controls (90.7 ± 32.1 vs. 110.0 ± 32.7 μg/ml, P < 0.001), extremely elevated in group with acute coronary syndromes (115.0 ± 35.2 μg/ml). Pearson correlation analysis showed that serum fetuin B levels were positively associated with the levels of total cholesterol (r = 0.276, P < 0.001), low-density lipoprotein cholesterol (r = 0.363, P < 0.001), and fasting blood glucose (r = 0.159, P < 0.05). In addition, multiple logistic regression analyses revealed that fetuin B was independently associated with the presence of coronary artery disease (OR, 1.019; 95% CI, 1.009 to 1.029; P < 0.001) and acute coronary syndromes (OR, 1.017; 95% CI, 1.006 to 1.028; P < 0.01). CONCLUSIONS Our data revealed that high fetuin B levels are associated with the presence of coronary artery disease and acute coronary syndromes, and that fetuin B may serve as a potential biomarker for coronary artery disease.
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Affiliation(s)
- Kefu Zhu
- Department of Cardiology, Zhejiang Hospital, Hangzhou, 310013, Zhejiang Province, China
| | - Yuming Wang
- Department of Geriatrics, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Pengqin Shu
- Department of Cardiology, Hangzhou First People's Hospital, Hangzhou, 310006, Zhejiang Province, China
| | - Qinyi Zhou
- Department of Mathematical Science, The University of Texas at Dallas, Dallas, TX, 75080, USA
| | - Jinzhou Zhu
- School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Wenjing Zhou
- Department of Geriatrics, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Changqing Du
- Department of Cardiology, Zhejiang Hospital, Hangzhou, 310013, Zhejiang Province, China
| | - Chenkai Xu
- Department of Cardiology, Zhejiang Hospital, Hangzhou, 310013, Zhejiang Province, China
| | - Xiaowei Liu
- Department of Cardiology, Zhejiang Hospital, Hangzhou, 310013, Zhejiang Province, China
| | - Lijiang Tang
- Department of Cardiology, Zhejiang Hospital, Hangzhou, 310013, Zhejiang Province, China.
- School of Medicine, Wenzhou Medical University, Wenzhou, 325035, Zhejiang Province, China.
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Zhu J, Wan X, Wang Y, Zhu K, Li C, Yu C, Li Y. Serum fetuin B level increased in subjects of nonalcoholic fatty liver disease: a case-control study. Endocrine 2017; 56:208-211. [PMID: 27628583 DOI: 10.1007/s12020-016-1112-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2016] [Accepted: 09/01/2016] [Indexed: 11/28/2022]
Abstract
Fetuin is an endogenous inhibitor of the insulin receptor tyrosine kinase. Recent studies supported the possible role of fetuin B in metabolic diseases. This study is to evaluate the role of serum fetuin B in nonalcoholic fatty liver disease (NAFLD). A hospital-based case-control study of 184 subjects was conducted. Serum level of fetuin B was measured by enzyme-linked immunosorbent assay. The serum level of fetuin B in the control (91.0 ± 36.9 μg/ml) was lower than it in NAFLD (108.7 ± 38.5 μg/ml, P < 0.001). The percentage of NAFLD increased (42.9%, 58.7% and 60.2%; P < 0.001; linear-by-linear association: P < 0.001), as fetuin B concentration elevated in its tertiles, after adjustment of body mass index (BMI). Furthermore, compared with the 1st tertile, the 3rd tertile of fetuin B indicated an association with the presence of NAFLD (adjusted odds ratio = 2.087, 95% confidence interval [1.016 - 3.937], P = 0.023), after controlling age, sex, BMI, diabetes, hypertension and hypertriglyceridemia. Lastly, fetuin B correlated with diastolic blood pressure, serum alanine transaminase and triglycerides, among the controls. It suggested a potential association between serum fetuin B and the presence of NAFLD.
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Affiliation(s)
- Jinzhou Zhu
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Xingyong Wan
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Yuming Wang
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Kefu Zhu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, 310003, Zhejiang Province, China
| | - Chunxiao Li
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Chaohui Yu
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China
| | - Youming Li
- Department of Gastroenterology, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, 310003, Zhejiang Province, China.
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Tvarijonaviciute A, Ceron JJ, de Torre C, Ljubić BB, Holden SL, Queau Y, Morris PJ, Pastor J, German AJ. Obese dogs with and without obesity-related metabolic dysfunction - a proteomic approach. BMC Vet Res 2016; 12:211. [PMID: 27646300 PMCID: PMC5028949 DOI: 10.1186/s12917-016-0839-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2016] [Accepted: 09/10/2016] [Indexed: 12/12/2022] Open
Abstract
Background Approximately 20 % of obese dogs have metabolic disturbances similar to those observed in human metabolic syndrome, a condition known as obesity-related metabolic dysfunction. This condition is associated with insulin resistance and decreased circulating adiponectin concentrations, but clinical consequences have not been reported. In order to define better the metabolic changes associated with obesity-related metabolic dysfunction (ORMD), we compared the plasma proteomes of obese dogs with and without ORMD. A proteomic analysis was conducted on plasma samples from 8 obese male dogs, 4 with ORMD and 4 without ORMD. The samples were first treated for the depletion of high-abundance proteins and subsequently analysed by using 2-DE DIGE methodology. Results Using mass spectrometry, 12 proteins were identified: albumin, apoliprotein A-I, C2, C3, C5, C4BPA, A2M, Uncharacterised protein (Fragment) OS = Canis familiaris, fibrinogen, IGJ, ITIH2, and glutathione peroxidase. In obese dogs with ORMD, the relative amounts of ten proteins (albumin, apoliprotein A-I, C2, C3, C5, C4BPA, A2M, Uncharacterised protein (Fragment) OS = Canis familiaris, fibrinogen, and ITIH2) were increased and two proteins (IGJ and glutathione peroxidase) were decreased, compared with obese dogs without ORMD. Specific assays were then used to confirm differences in serum albumin, apoliprotein A-I and glutathione peroxidase in a separate group of 20 overweight dogs, 8 with ORMD and 12 without ORMD. Conclusions The current study provides evidence that, in obese dogs with ORMD, there are changes in expression of proteins involved in lipid metabolism, immune response, and antioxidant status. The clinical significance of these changes remains to be defined.
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Affiliation(s)
- Asta Tvarijonaviciute
- Departament de Medicina i Cirugia Animals, Universitat Autónoma de Barcelona, 08193, Barcelona, Spain. .,Interdisciplinary Laboratory of Clinical Pathology, Iterlab-UMU, Campus of Excellence Mare Nostrum, University of Murcia, Murcia, Spain.
| | - Jose J Ceron
- Interdisciplinary Laboratory of Clinical Pathology, Iterlab-UMU, Campus of Excellence Mare Nostrum, University of Murcia, Murcia, Spain
| | - Carlos de Torre
- Unidad de Proteómica, Hospital Clínico Universitario Virgen de la Arrixaca (HCUVA), IMIB-Arrixaca, 30120, Murcia, Spain
| | - Blanka B Ljubić
- Internal Diseases Clinic, Faculty of Veterinary Medicine, University of Zagreb, 10000, Zagreb, Croatia
| | - Shelley L Holden
- Department of Obesity and Endocrinology, University of Liverpool, Leahurst Campus, Chester High Road, Neston, Wirral, CH64 7TE, UK
| | - Yann Queau
- Royal Canin Research Center, B.P.4-650 Avenue de la Petite Camargue, 30470, Aimargues, France
| | - Penelope J Morris
- The WALTHAM Centre for Pet Nutrition, Freeby Lane, Waltham-on-the-Wolds, Melton Mowbray, LE14 4RT, UK
| | - Josep Pastor
- Departament de Medicina i Cirugia Animals, Universitat Autónoma de Barcelona, 08193, Barcelona, Spain
| | - Alexander J German
- Department of Obesity and Endocrinology, University of Liverpool, Leahurst Campus, Chester High Road, Neston, Wirral, CH64 7TE, UK
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12
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Bidirectional Relationships and Disconnects between NAFLD and Features of the Metabolic Syndrome. Int J Mol Sci 2016; 17:367. [PMID: 26978356 PMCID: PMC4813227 DOI: 10.3390/ijms17030367] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 03/02/2016] [Accepted: 03/07/2016] [Indexed: 12/19/2022] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) represents a wide spectrum of liver disease from simple steatosis, to steatohepatitis, (both with and without liver fibrosis), cirrhosis and end-stage liver failure. NAFLD also increases the risk of hepatocellular carcinoma (HCC) and both HCC and end stage liver disease may markedly increase risk of liver-related mortality. NAFLD is increasing in prevalence and is presently the second most frequent indication for liver transplantation. As NAFLD is frequently associated with insulin resistance, central obesity, dyslipidaemia, hypertension and hyperglycaemia, NAFLD is often considered the hepatic manifestation of the metabolic syndrome. There is growing evidence that this relationship between NAFLD and metabolic syndrome is bidirectional, in that NAFLD can predispose to metabolic syndrome features, which can in turn exacerbate NAFLD or increase the risk of its development in those without a pre-existing diagnosis. Although the relationship between NAFLD and metabolic syndrome is frequently bidirectional, recently there has been much interest in genotype/phenotype relationships where there is a disconnect between the liver disease and metabolic syndrome features. Such potential examples of genotypes that are associated with a dissociation between liver disease and metabolic syndrome are patatin-like phospholipase domain-containing protein-3 (PNPLA3) (I148M) and transmembrane 6 superfamily member 2 protein (TM6SF2) (E167K) genotypes. This review will explore the bidirectional relationship between metabolic syndrome and NAFLD, and will also discuss recent insights from studies of PNPLA3 and TM6SF2 genotypes that may give insight into how and why metabolic syndrome features and liver disease are linked in NAFLD.
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Meex RC, Hoy AJ, Morris A, Brown RD, Lo JCY, Burke M, Goode RJA, Kingwell BA, Kraakman MJ, Febbraio MA, Greve JW, Rensen SS, Molloy MP, Lancaster GI, Bruce CR, Watt MJ. Fetuin B Is a Secreted Hepatocyte Factor Linking Steatosis to Impaired Glucose Metabolism. Cell Metab 2015; 22:1078-89. [PMID: 26603189 DOI: 10.1016/j.cmet.2015.09.023] [Citation(s) in RCA: 166] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 08/04/2015] [Accepted: 09/23/2015] [Indexed: 12/18/2022]
Abstract
Liver steatosis is associated with the development of insulin resistance and the pathogenesis of type 2 diabetes. We tested the hypothesis that protein signals originating from steatotic hepatocytes communicate with other cells to modulate metabolic phenotypes. We show that the secreted factors from steatotic hepatocytes induce pro-inflammatory signaling and insulin resistance in cultured cells. Next, we identified 168 hepatokines, of which 32 were differentially secreted in steatotic versus non-steatotic hepatocytes. Targeted analysis showed that fetuin B was increased in humans with liver steatosis and patients with type 2 diabetes. Fetuin B impaired insulin action in myotubes and hepatocytes and caused glucose intolerance in mice. Silencing of fetuin B in obese mice improved glucose tolerance. We conclude that the protein secretory profile of hepatocytes is altered with steatosis and is linked to inflammation and insulin resistance. Therefore, preventing steatosis may limit the development of dysregulated glucose metabolism in settings of overnutrition.
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Affiliation(s)
- Ruth C Meex
- Monash Biomedicine Discovery Institute, Metabolic Disease and Obesity Program, and Biology of Lipid Metabolism Laboratory, Department of Physiology, Monash University, Clayton, VIC 3800, Australia
| | - Andrew J Hoy
- Monash Biomedicine Discovery Institute, Metabolic Disease and Obesity Program, and Biology of Lipid Metabolism Laboratory, Department of Physiology, Monash University, Clayton, VIC 3800, Australia
| | - Alexander Morris
- Monash Biomedicine Discovery Institute, Metabolic Disease and Obesity Program, and Biology of Lipid Metabolism Laboratory, Department of Physiology, Monash University, Clayton, VIC 3800, Australia
| | - Russell D Brown
- Monash Biomedicine Discovery Institute, Metabolic Disease and Obesity Program, and Biology of Lipid Metabolism Laboratory, Department of Physiology, Monash University, Clayton, VIC 3800, Australia
| | - Jennifer C Y Lo
- Monash Biomedicine Discovery Institute, Metabolic Disease and Obesity Program, and Biology of Lipid Metabolism Laboratory, Department of Physiology, Monash University, Clayton, VIC 3800, Australia
| | - Melissa Burke
- Biotechnology Research Laboratories, Department of Physiology, Monash University, Clayton, VIC 3800, Australia; Mill Hill Laboratory, The Francis Crick Institute, London NW7 1AA, UK
| | - Robert J A Goode
- Department of Biochemistry and Molecular Biology, Monash University, Clayton, VIC 3800, Australia
| | | | | | - Mark A Febbraio
- Baker IDI Heart and Diabetes Institute, Melbourne, VIC 3004, Australia; The Garvan Institute of Medical Research, Sydney, NSW 2010, Australia
| | - Jan Willem Greve
- NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Department of General Surgery, Maastricht, the Netherlands
| | - Sander S Rensen
- NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Department of General Surgery, Maastricht, the Netherlands
| | - Mark P Molloy
- Australian Proteome Analysis Facility, Macquarie University, Sydney, NSW 2109, Australia
| | | | - Clinton R Bruce
- Monash Biomedicine Discovery Institute, Metabolic Disease and Obesity Program, and Biology of Lipid Metabolism Laboratory, Department of Physiology, Monash University, Clayton, VIC 3800, Australia
| | - Matthew J Watt
- Monash Biomedicine Discovery Institute, Metabolic Disease and Obesity Program, and Biology of Lipid Metabolism Laboratory, Department of Physiology, Monash University, Clayton, VIC 3800, Australia.
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Sá FGDSD, Lima-Leopoldo AP, Jacobsen BB, Ferron AJT, Estevam WM, Campos DHS, Castardeli E, Cunha MRHD, Cicogna AC, Leopoldo AS. Obesity Resistance Promotes Mild Contractile Dysfunction Associated with Intracellular Ca2+ Handling. Arq Bras Cardiol 2015; 105:588-96. [PMID: 26761369 PMCID: PMC4693663 DOI: 10.5935/abc.20150134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 07/28/2015] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Diet-induced obesity is frequently used to demonstrate cardiac dysfunction. However, some rats, like humans, are susceptible to developing an obesity phenotype, whereas others are resistant to that. OBJECTIVE To evaluate the association between obesity resistance and cardiac function, and the impact of obesity resistance on calcium handling. METHODS Thirty-day-old male Wistar rats were distributed into two groups, each with 54 animals: control (C; standard diet) and obese (four palatable high-fat diets) for 15 weeks. After the experimental protocol, rats consuming the high-fat diets were classified according to the adiposity index and subdivided into obesity-prone (OP) and obesity-resistant (OR). Nutritional profile, comorbidities, and cardiac remodeling were evaluated. Cardiac function was assessed by papillary muscle evaluation at baseline and after inotropic maneuvers. RESULTS The high-fat diets promoted increase in body fat and adiposity index in OP rats compared with C and OR rats. Glucose, lipid, and blood pressure profiles remained unchanged in OR rats. In addition, the total heart weight and the weight of the left and right ventricles in OR rats were lower than those in OP rats, but similar to those in C rats. Baseline cardiac muscle data were similar in all rats, but myocardial responsiveness to a post-rest contraction stimulus was compromised in OP and OR rats compared with C rats. CONCLUSION Obesity resistance promoted specific changes in the contraction phase without changes in the relaxation phase. This mild abnormality may be related to intracellular Ca2+ handling.
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Affiliation(s)
| | - Ana Paula Lima-Leopoldo
- Departamento de Desportos, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Bruno Barcellos Jacobsen
- Departamento de Desportos, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Artur Junio Togneri Ferron
- Departamento de Desportos, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Wagner Muller Estevam
- Departamento de Desportos, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Dijon Henrique Salomé Campos
- Departamento de Clínica Médica, Faculdade de Medicina, Universidade Estadual Paulista, Botucatu, São Paulo, Brazil
| | - Edson Castardeli
- Departamento de Desportos, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Márcia Regina Holanda da Cunha
- Departamento de Desportos, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
| | - Antonio Carlos Cicogna
- Departamento de Clínica Médica, Faculdade de Medicina, Universidade Estadual Paulista, Botucatu, São Paulo, Brazil
| | - André Soares Leopoldo
- Departamento de Desportos, Centro de Educação Física e Desportos, Universidade Federal do Espírito Santo, Vitória, ES, Brazil
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Dake BL, Oltman CL. Cardiovascular, metabolic, and coronary dysfunction in high-fat-fed obesity-resistant/prone rats. Obesity (Silver Spring) 2015; 23:623-9. [PMID: 25645537 DOI: 10.1002/oby.21009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 11/28/2014] [Indexed: 11/10/2022]
Abstract
OBJECTIVE Obesity is a global epidemic leading to several comorbidities including diabetes and cardiovascular disease. The hypothesis that the genetic background of the obesity-prone rat (OP) predisposes to physiologic, metabolic, and microvascular dysfunction which is exacerbated by a diet high in saturated fats was tested. METHODS Male OP and obesity-resistant (OR) rats were fed either a diet containing 10% (chow) or 45% kcal fat (HF) for 42 weeks. RESULTS Weight of OP rats was greater than OR rats by 8 weeks on both diets. Blood pressure was increased in OP rats on chow and further augmented by HF diet compared to OR rats on similar diets. In contrast to weight and blood pressure, glucose clearance was similar in OR and OP rats on chow and impaired in both models on HF diet. Relaxation to acetylcholine was attenuated in OP rats compared to OR rats by 8 weeks and remained reduced throughout the study. A longer period of time was required to observe vascular dysfunction in HF-fed OR rats. CONCLUSIONS When compared to OR rats, OP rats are prone to develop not only greater obesity but also hypertension and vascular dysfunction on a normal diet which is further augmented with HF diet.
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Affiliation(s)
- Brian L Dake
- Department of Internal Medicine, Roy J. and Lucille A. Carver College of Medicine, University of Iowa and the Iowa City Veterans Affairs Health Care System, Iowa City, Iowa, USA
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16
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Mukherjee R, Kim SW, Choi MS, Yun JW. Sex-dependent expression of caveolin 1 in response to sex steroid hormones is closely associated with development of obesity in rats. PLoS One 2014; 9:e90918. [PMID: 24608114 PMCID: PMC3948350 DOI: 10.1371/journal.pone.0090918] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 02/06/2014] [Indexed: 11/18/2022] Open
Abstract
Caveolin-1 (CAV1) is a conserved group of structural membrane proteins that form special cholesterol and sphingolipid-rich compartments, especially in adipocytes. Recently, it has been reported that CAV1 is an important target protein in sex hormone-dependent regulation of various metabolic pathways, particularly in cancer and diabetes. To clarify distinct roles of CAV1 in sex-dependent obesity development, we investigated the effects of high fat diet (HFD) and sex steroid hormones on CAV1 expression in adipose tissues of male and female rats. Results of animal experiments revealed that estrogen (17-β-estradiol, E2) and androgen (dihydrotestosterone, DHT) had opposite effects on body weight gain as well as on the regulation of CAV1, hormone sensitive lipase (HSL) and uncoupling protein 1 (UCP1) in adipose tissues. Furthermore, sex hormone receptors and aromatase were differentially expressed in a sex-dependent manner in response to E2 and DHT treatments. In vivo data were confirmed using 3T3-L1 and HIB1B cell lines, where Cav1 knock down stimulated lipogenesis but suppressed sex hormone receptor signaling proteins. Most importantly, co-immunoprecipitation enabled the identification of previously unrecognized CAV1-interacting mitochondrial or lipid oxidative pathway proteins in adipose tissues. Taken together, current data showed that CAV1 may play important preventive role in the development of obesity, with more prominent effects in females, and proved to be an important target protein for the hormonal regulation of adipose tissue metabolism by manipulating sex hormone receptors and mitochondrial oxidative pathways. Therefore, we can report, for the first time, the molecular mechanism underlying the effects of sex steroid hormones in the sex-dimorphic regulation of CAV1.
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Affiliation(s)
- Rajib Mukherjee
- Department of Biotechnology, Daegu University, Kyungsan, Republic of Korea
| | - Sang Woo Kim
- Department of Biotechnology, Daegu University, Kyungsan, Republic of Korea
| | - Myung Sook Choi
- Center for Food and Nutritional Genomics Research & Department of Food Science and Nutrition, Kyungpook National University, Daegu, Republic of Korea
| | - Jong Won Yun
- Department of Biotechnology, Daegu University, Kyungsan, Republic of Korea
- * E-mail:
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17
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Gender-dependent expression of pancreatic proteins in streptozotocin-induced diabetic rats. BIOTECHNOL BIOPROC E 2014. [DOI: 10.1007/s12257-013-0324-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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18
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Tvarijonaviciute A, Gutiérrez AM, Miller I, Razzazi-Fazeli E, Tecles F, Ceron JJ. A proteomic analysis of serum from dogs before and after a controlled weight-loss program. Domest Anim Endocrinol 2012; 43:271-7. [PMID: 22591953 DOI: 10.1016/j.domaniend.2012.04.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2012] [Revised: 04/07/2012] [Accepted: 04/13/2012] [Indexed: 11/19/2022]
Abstract
The objective of this study was to investigate how weight-loss program would alter the proteome of the serum of Beagle dogs. For this purpose, serum samples from 5 Beagle dogs, before and after weight loss, were analyzed using 2-dimensional electrophoresis. Protein profiles of all samples were obtained, divided into 2 classes (obese and lean), and compared using specific 2-dimensional software, giving a total of 144 spot matches. Statistical analysis revealed 3 spot matches whose expressions were modulated in response to weight loss: 2 protein spots were upregulated and 1 protein spot was downregulated in the obese state in comparison with the lean state of the dogs. Mass spectrometric identification of differentially regulated spots revealed that these protein spots corresponded to retinol-binding protein 4, clusterin precursor, and α-1 antitrypsin, respectively, which could be considered potential markers of obesity and obesity-related disease processes in dogs.
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Affiliation(s)
- A Tvarijonaviciute
- Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia, 30100 Espinardo, Murcia, Spain
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19
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Steelman SM, Chowdhary BP. Plasma proteomics shows an elevation of the anti-inflammatory protein APOA-IV in chronic equine laminitis. BMC Vet Res 2012; 8:179. [PMID: 23016951 PMCID: PMC3511297 DOI: 10.1186/1746-6148-8-179] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Accepted: 07/10/2012] [Indexed: 12/11/2022] Open
Abstract
Background Equine laminitis is a devastating disease that causes severe pain in afflicted horses and places a major economic burden on the horse industry. In acute laminitis, the disintegration of the dermal-epidermal junction can cause the third phalanx to detach from the hoof wall, leaving the horse unable to bear weight on the affected limbs. Horses that survive the acute phase transition into a chronic form of laminitis, which is often termed “founder”. Some evidence suggests that chronic laminar inflammation might be associated with alterations in the endocrine and immune systems. We investigated this broad hypothesis by using DIGE to assess global differences in the plasma proteome between horses with chronic laminitis and controls. Results We identified 16 differentially expressed proteins; the majority of these were involved in the interrelated coagulation, clotting, and kininogen cascades. Clinical testing of functional coagulation parameters in foundered horses revealed a slight delay in prothrombin (PT) clotting time, although most other indices were within normal ranges. Upregulation of the intestinal apolipoprotein APOA-IV in horses with chronic laminitis was confirmed by western blot. Conclusions Our results support the hypothesis that localized laminar inflammation may be linked to systemic alterations in immune regulation, particularly in the gastrointestinal system. Gastrointestinal inflammation has been implicated in the development of acute laminitis but has not previously been associated with chronic laminitis.
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Affiliation(s)
- Samantha M Steelman
- Veterinary Integrative Biosciences, College of Veterinary Medicine, Texas A&M University, College Station, TX 77845-4458, USA
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20
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Choi JW, Liu H, Song H, Park JHY, Yun JW. Plasma marker proteins associated with the progression of lung cancer in obese mice fed a high-fat diet. Proteomics 2012; 12:1999-2013. [DOI: 10.1002/pmic.201100582] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Jung-Won Choi
- Department of Biotechnology,; Daegu University,; Kyungsan; Kyungbuk; Republic of Korea
| | - Hao Liu
- Department of Biotechnology,; Daegu University,; Kyungsan; Kyungbuk; Republic of Korea
| | - Hyerim Song
- Department of Food Science and Nutrition; Hallym University; Chuncheon; Republic of Korea
| | - Jung Han Yoon Park
- Department of Food Science and Nutrition; Hallym University; Chuncheon; Republic of Korea
| | - Jong Won Yun
- Department of Biotechnology,; Daegu University,; Kyungsan; Kyungbuk; Republic of Korea
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Gianazza E, Wait R, Eberini I, Sensi C, Sironi L, Miller I. Proteomics of rat biological fluids — The tenth anniversary update. J Proteomics 2012; 75:3113-28. [DOI: 10.1016/j.jprot.2012.03.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2012] [Revised: 03/26/2012] [Accepted: 03/28/2012] [Indexed: 01/29/2023]
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22
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Long chain acyl CoA synthetase 1 and gelsolin are oppositely regulated in adipogenesis and lipogenesis. Biochem Biophys Res Commun 2012; 420:588-93. [DOI: 10.1016/j.bbrc.2012.03.038] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Accepted: 03/08/2012] [Indexed: 11/22/2022]
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Zhang X, Zhou D, Strakovsky R, Zhang Y, Pan YX. Hepatic cellular senescence pathway genes are induced through histone modifications in a diet-induced obese rat model. Am J Physiol Gastrointest Liver Physiol 2012; 302:G558-64. [PMID: 22194422 PMCID: PMC6732737 DOI: 10.1152/ajpgi.00032.2011] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Accepted: 12/21/2011] [Indexed: 01/31/2023]
Abstract
Overnutrition, such as a high-fat (HF) diet, is a feature followed by some in developed nations that leads to obesity and fatty liver disease. In rats, when fed a fat-high diet, some develop obesity (obesity prone, OP) while others display an obesity-resistant (OR) phenotype. The present study investigated the differences between OP and OR rats on their activation of hepatic cellular senescence pathways on a HF diet. Male OP and OR rats were fed a HF diet containing 45% kcal from fat for 13 wk, and livers were collected for analysis by quantitative real-time PCR, Western blot, and chromatin immunoprecipitation. OP rats were 41% heavier than OR rats, despite consuming the same amount of food. Triacylglycerol levels were increased significantly in both plasma and liver of OP rats. Gene analysis demonstrated a significant increase of both the amount and the transcription rates of p16(INK4a) and p21(Cip1) mRNA in OP rats. The increased p16(INK4a) and p21(Cip1) also caused a significant decrease in the level of phosphorylation of retinoblastoma protein. In OP rats, the increase of p16(INK4a) was associated with the higher acetylation levels of histone H4 at the p16(INK4a) promoter and coding region and lower methylation level of histone H3 lysine-27 in the p16(INK4a) coding region. The increase of p21(Cip1) was associated with increased acetylation of both histone H3 and H4 and decreased trimethylation of histone H3 lysine-27 at the p21(Cip1) promoter. In the p21(Cip1) coding region, dimethylation of histone H3 lysine-4 was significantly higher (P <0.05) in livers of OP rats compared with OR rats.
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Affiliation(s)
- Xiyuan Zhang
- Department of Food Science and Human Nutrition, University of Illinois at Urbana-Champaign, 61801, USA
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Choi JW, Liu H, Choi DK, Oh TS, Mukherjee R, Yun JW. Profiling of gender-specific rat plasma proteins associated with susceptibility or resistance to diet-induced obesity. J Proteomics 2012; 75:1386-400. [DOI: 10.1016/j.jprot.2011.11.012] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2011] [Revised: 11/07/2011] [Accepted: 11/12/2011] [Indexed: 01/07/2023]
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Hurt RT, Frazier TH, McClave SA, Kaplan LM. Obesity epidemic: overview, pathophysiology, and the intensive care unit conundrum. JPEN J Parenter Enteral Nutr 2012; 35:4S-13S. [PMID: 21881014 DOI: 10.1177/0148607111415110] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Obesity is one of the leading causes of preventable death in the United States, second only to smoking. The annual number of deaths attributed to obesity is estimated to be as high as 400,000. Nearly 70% of the adult U.S. population is overweight or obese. The historical viewpoint toward obesity has deemed it to be a lifestyle choice or characterological flaw. However, given the emerging research into the development of obesity and its related complications, our perspective is changing. It is now clear that obesity is a heterogeneous disease with many different subtypes, which involves an interplay between genetic and environmental factors. The current epidemic of obesity is the result of an obesogenic environment (which includes energy-dense foods and a lack of physical activity) in individuals who have a genetic susceptibility for developing obesity. The pathophysiology associated with weight gain is much more complex than originally thought. The heterogeneous nature of the disease makes the development of treatment strategies for obesity difficult. Obesity in general is associated with increased all-cause mortality and cause-specific mortality (from cardiovascular, diabetic, hepatic, and neoplastic causes). Yet despite increased overall mortality rates, current evidence suggests that when these same patients are admitted to the intensive care unit (ICU), the obesity provides some protection against mortality. At present, there is no clear explanation for this obesity conundrum in critical illness.
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Affiliation(s)
- Ryan T Hurt
- Division of General Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Wang X, Choi JW, Oh TS, Choi DK, Mukherjee R, Liu H, Yun JW. Comparative hepatic proteome analysis between lean and obese rats fed a high-fat diet reveals the existence of gender differences. Proteomics 2012; 12:284-99. [PMID: 22140079 DOI: 10.1002/pmic.201100271] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2011] [Revised: 10/06/2011] [Accepted: 10/17/2011] [Indexed: 01/27/2023]
Abstract
Gender differences in obesity stem from metabolic and hormonal differences between sexes and contribute to differences between women and men in health risks attributable to obesity. We hypothesized that liver may be an ideal target for the evaluation of gender differences in obesity development in response to a high-fat diet (HFD). Therefore, to test this hypothesis, we performed a global proteome analysis in the liver of lean and obese rats of both genders who were fed an HFD through 2-DE combined with MALDI-TOF-MS. When rats were exposed to HFD, male rats gained more body weight with increased values of plasma biochemical parameters than female rats. Image analysis and further statistical analysis of a 2-DE protein map allowed for the detection and identification of 34 proteins that were significantly modulated in a gender-dependent manner. We found 19 proteins showing identical gender-different regulation in both normal diet (ND) and HFD. Five proteins also showed clear gender differences in both ND and HFD; however, their regulation modes in HFD were opposite to those in ND. Of particular interest, 10 proteins showed gender differences only in either ND or HFD rats. Present proteomic insight into gender-dimorphic protein modulation in liver would aid in the improvement of gender awareness in the health-care system and in implementation of evidence-based gender-specific clinical recommendations.
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Affiliation(s)
- Xia Wang
- Department of Biotechnology, Daegu University, Kyungsan, Kyungbuk, Republic of Korea
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Liu H, Choi JW, Yun JW. Gender differences in rat plasma proteome in response to high-fat diet. Proteomics 2011; 12:269-83. [DOI: 10.1002/pmic.201100127] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2011] [Revised: 07/19/2011] [Accepted: 10/17/2011] [Indexed: 11/09/2022]
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Joo JI, Yun JW. Gene expression profiling of adipose tissues in obesity susceptible and resistant rats under a high fat diet. Cell Physiol Biochem 2011; 27:327-40. [PMID: 21471722 DOI: 10.1159/000327959] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/10/2011] [Indexed: 11/19/2022] Open
Abstract
Different responses to a high fat diet (HFD) can occur even within a group of animals with the same genetic background, such as obesity-prone (OP) or obesity-resistant (OR) phenotypes, on the same feeding. To explain these phenotypes, we performed an analysis of gene expression differences in brown (BAT) and white adipose tissue (WAT) of OP and OR rats. Microarray analysis of transcripts revealed that 91 and 53 genes showed significant differences in expression between the BAT and WAT gene, respectively. Surprisingly, a majority of these genes were significantly down-regulated in adipose tissues in response to HFD feeding. K-means clustering of the expression levels of these genes identified 4 distinct groupings of genes with significant expression levels. Only a limited number of genes were significantly regulated in adipose tissues in response to HFD feeding, whereas expression levels of a large number of genes differed significantly between OP and OR rat. Our observations support that distinct discrepancies exist in gene-expression regulations in adipose tissues, and that alteration likely resulted from significant differences in genes encoding metabolic enzymes. To the best of our knowledge, this study provided the first direct comparison of gene-expression changes between OP and OR rats.
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Affiliation(s)
- Jeong In Joo
- Department of Biotechnology, Daegu University, Kyungsan, Korea
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