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Zhang Z, Rodriguez M, Zheng Z. Clot or Not? Reviewing the Reciprocal Regulation Between Lipids and Blood Clotting. Arterioscler Thromb Vasc Biol 2024; 44:533-544. [PMID: 38235555 PMCID: PMC10922732 DOI: 10.1161/atvbaha.123.318286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Both hyperlipidemia and thrombosis contribute to the risks of atherosclerotic cardiovascular diseases, which are the leading cause of death and reduced quality of life in survivors worldwide. The accumulation of lipid-rich plaques on arterial walls eventually leads to the rupture or erosion of vulnerable lesions, triggering excessive blood clotting and leading to adverse thrombotic events. Lipoproteins are highly dynamic particles that circulate in blood, carry insoluble lipids, and are associated with proteins, many of which are involved in blood clotting. A growing body of evidence suggests a reciprocal regulatory relationship between blood clotting and lipid metabolism. In this review article, we summarize the observations that lipoproteins and lipids impact the hemostatic system, and the clotting-related proteins influence lipid metabolism. We also highlight the gaps that need to be filled in this area of research.
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Affiliation(s)
- Ziyu Zhang
- Blood Research Institute, Versiti Blood Center of Wisconsin, Milwaukee, Wisconsin 53226, USA
| | - Maya Rodriguez
- Blood Research Institute, Versiti Blood Center of Wisconsin, Milwaukee, Wisconsin 53226, USA
- College of Arts and Sciences, Marquette University, Milwaukee, Wisconsin 53233, USA
| | - Ze Zheng
- Blood Research Institute, Versiti Blood Center of Wisconsin, Milwaukee, Wisconsin 53226, USA
- Department of Medicine, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
- Cardiovascular Center, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
- Department of Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin 53226, USA
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2
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Zhu L, An J, Chinnarasu S, Luu T, Pettway YD, Fahey K, Litts B, Kim HYH, Flynn CR, Linton MF, Stafford JM. Expressing the Human Cholesteryl Ester Transfer Protein Minigene Improves Diet-Induced Fatty Liver and Insulin Resistance in Female Mice. Front Physiol 2022; 12:799096. [PMID: 35082691 PMCID: PMC8784660 DOI: 10.3389/fphys.2021.799096] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/16/2021] [Indexed: 01/22/2023] Open
Abstract
Mounting evidence has shown that CETP has important physiological roles in adapting to chronic nutrient excess, specifically, to protect against diet-induced insulin resistance. However, the underlying mechanisms for the protective roles of CETP in metabolism are not yet clear. Mice naturally lack CETP expression. We used transgenic mice with a human CETP minigene (huCETP) controlled by its natural flanking region to further understand CETP-related physiology in response to obesity. Female huCETP mice and their wild-type littermates were fed a high-fat diet for 6 months. Blood lipid profile and liver lipid metabolism were studied. Insulin sensitivity was analyzed with euglycemic-hyperinsulinemic clamp studies combined with 3H-glucose tracer techniques. While high-fat diet feeding induced obesity for huCETP mice and their wild-type littermates lacking CETP expression, insulin sensitivity was higher for female huCETP mice than for their wild-type littermates. There was no difference in insulin sensitivity for male huCETP mice vs. littermates. The increased insulin sensitivity in females was largely caused by the better insulin-mediated suppression of hepatic glucose production. In huCETP females, CETP in the circulation decreased HDL-cholesterol content and increased liver cholesterol uptake and liver cholesterol and oxysterol contents, which was associated with the upregulation of LXR target genes in long-chain polyunsaturated fatty acid biosynthesis and PPARα target genes in fatty acid β-oxidation in the liver. The upregulated fatty acid β-oxidation may account for the improved fatty liver and liver insulin action in female huCETP mice. This study provides further evidence that CETP has beneficial physiological roles in the metabolic adaptation to nutrient excess by promoting liver fatty acid oxidation and hepatic insulin sensitivity, particularly for females.
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Affiliation(s)
- Lin Zhu
- VA Tennessee Valley Healthcare System, Nashville, TN, United States.,Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Julia An
- Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Sivaprakasam Chinnarasu
- Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Thao Luu
- Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Yasminye D Pettway
- Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Kelly Fahey
- Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Bridget Litts
- Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - Hye-Young H Kim
- Department of Chemistry, Vanderbilt University, Nashville, TN, United States
| | - Charles R Flynn
- Section of Surgical Sciences, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - MacRae F Linton
- Atherosclerosis Research Unit, Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN, United States
| | - John M Stafford
- VA Tennessee Valley Healthcare System, Nashville, TN, United States.,Division of Diabetes, Endocrinology, and Metabolism, Vanderbilt University School of Medicine, Nashville, TN, United States.,Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, TN, United States
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3
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Zwartjes MSZ, Gerdes VEA, Nieuwdorp M. The Role of Gut Microbiota and Its Produced Metabolites in Obesity, Dyslipidemia, Adipocyte Dysfunction, and Its Interventions. Metabolites 2021; 11:531. [PMID: 34436472 PMCID: PMC8398981 DOI: 10.3390/metabo11080531] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 02/06/2023] Open
Abstract
Obesity is becoming an increasing problem worldwide and is often, but not invariably, associated with dyslipidemia. The gut microbiota is increasingly linked to cardiovascular disease, nonalcoholic fatty liver disease, and type 2 diabetes mellitus. However, relatively little focus has been attributed to the role of gut-microbiota-derived metabolites in the development of dyslipidemia and alterations in lipid metabolism. In this review, we discuss current data involved in these processes and point out the therapeutic potentials. We cover the ability of gut microbiota metabolites to alter lipoprotein lipase action, VLDL secretion, and plasma triglyceride levels, and its effects on reverse cholesterol transport, adipocyte dysfunction, and adipose tissue inflammation. Finally, the current intervention strategies for treatment of obesity and dyslipidemia is addressed with emphasis on the role of gut microbiota metabolites and its ability to predict treatment efficacies.
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Affiliation(s)
- Max S. Z. Zwartjes
- Department of Experimental Vascular Medicine, Amsterdam University Medical Center, 1105 AZ Amsterdam, The Netherlands; (V.E.A.G.); (M.N.)
- Department of Internal Medicine, Spaarne Gasthuis, Spaarnepoort 1, 2134 TM Hoofddorp, The Netherlands
| | - Victor E. A. Gerdes
- Department of Experimental Vascular Medicine, Amsterdam University Medical Center, 1105 AZ Amsterdam, The Netherlands; (V.E.A.G.); (M.N.)
- Department of Internal Medicine, Spaarne Gasthuis, Spaarnepoort 1, 2134 TM Hoofddorp, The Netherlands
- Department of Internal and Vascular Medicine, Amsterdam University Medical Center, 1105 AZ Amsterdam, The Netherlands
| | - Max Nieuwdorp
- Department of Experimental Vascular Medicine, Amsterdam University Medical Center, 1105 AZ Amsterdam, The Netherlands; (V.E.A.G.); (M.N.)
- Department of Internal and Vascular Medicine, Amsterdam University Medical Center, 1105 AZ Amsterdam, The Netherlands
- Department of Internal Medicine, Diabetes Center, Amsterdam University Medical Center, 1105 AZ Amsterdam, The Netherlands
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4
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Interaction between CETP polymorphism and dietary insulin index and load in relation to cardiovascular risk factors in diabetic adults. Sci Rep 2021; 11:15906. [PMID: 34354158 PMCID: PMC8342557 DOI: 10.1038/s41598-021-95359-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 06/24/2021] [Indexed: 12/25/2022] Open
Abstract
Gene-diet interactions may play an important role in the inter individual diversity observed in on cardiovascular disease (CVD) risk factors. Therefore, in the current study, we examined the interaction of CETP TaqB1 polymorphism with dietary insulin index and load (DII and DIL), in altering on CVD risk factors among type 2 diabetes mellitus (T2DM). In this cross-sectional study, blood samples were collected from 220 type 2 diabetic patients (134 females and 86 male) with a mean age of 52.24 years in Tehran, Iran. DIL and DII were obtained via validated food-frequency questionnaire (FFQ). Taq1B polymorphism was genotyped by the polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Biochemical markers including total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), triglyceride (TG), superoxide dismutase (SOD), C-reactive protein (CRP), total antioxidant capacity (TAC), pentraxin-3 (PTX3), isoprostaneF2α (PGF2α). interleukin 18 (IL18), leptin and ghrelin were measured by standard protocol. Patients with B1B1 genotype had lower lipid profiles include LDL/HDL (P < 0.001) and TG (P = 0.04) when they consumed diets higher on the DIL and DII index. Moreover, carriers of B2B2 genotype who were in the last tertile of DIL had higher antioxidant and inflammatory markers include SOD (P = 0.01), PGF2α (P = 0.04) and CRP (P = 0.02). Further, a significant interaction between CETP TaqB1 and DII was shown in terms of WC (P = 0.01), where the highest WC were observed in B2B2 genotype carriers following a DII score. However, the highest inflammatory and antioxidant markers include CRP (P = 0.04), TAC (P = 0.01), SOD (P = 0.02), and PGF2α (P = 0.02) were observed in B2B2 genotype carriers when they consumed diets higher on the DII index. Based on the current study, it could be proposed that CETP polymorphism may be associated with CVD risk factors in T2DM patients with high following insulin indices, including DII and DIL. It seems that CETP Taq1B polymorphism can invert the result produced by insulin. This conclusion illustrates that the CETP Taq1B B1 allele could counteract the CVD risk induced by high DII and DIL.
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Ohira M, Watanabe Y, Yamaguchi T, Onda H, Yamaoka S, Abe K, Nakamura S, Tanaka S, Kawagoe N, Nabekura T, Oshiro T, Nagayama D, Tatsuno I, Saiki A. Decreased Triglyceride and Increased Serum Lipoprotein Lipase Levels Are Correlated to Increased High-Density Lipoprotein-Cholesterol Levels after Laparoscopic Sleeve Gastrectomy. Obes Facts 2021; 14:633-640. [PMID: 34634786 PMCID: PMC8739375 DOI: 10.1159/000519410] [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: 06/20/2021] [Accepted: 08/31/2021] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Laparoscopic sleeve gastrectomy (LSG) significantly increases high-density lipoprotein cholesterol (HDL-C) and lipoprotein lipase (LPL) in pre-heparin serum (pre-heparin LPL levels). LPL is a regulator of serum triglyceride (TG) and HDL-C production; this may be the mechanism for HDL-C increase after LSG. This study aimed to elucidate the mechanism of increase in HDL-C levels by examining the relationship between changes in serum HDL-C levels and LPL after LSG. METHODS We retrospectively reviewed 104 obese patients, who underwent LSG and were followed up for 12 months. We analyzed the relationship between changes in serum HDL-C levels and various clinical parameters after LSG. RESULTS A significant decrease was observed in the patients' BMI and serum TG levels after LSG. Conversely, HDL-C levels and pre-heparin LPL levels were significantly increased after LSG. Simple linear regression showed that changes in HDL-C levels were significantly correlated with total weight loss percentage, change in TG levels, abdominal fat areas, and pre-heparin LPL levels. Additionally, the multiple regression model revealed that a decrease in TG levels and an increase in pre-heparin LPL levels were correlated with increased HDL-C levels after LSG. DISCUSSION/CONCLUSION These results show that a decrease in TG levels and an increase in LPL are mechanisms for increased HDL-C levels after LSG.
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Affiliation(s)
- Masahiro Ohira
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo, Japan
- *Masahiro Ohira,
| | - Yasuhiro Watanabe
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Takashi Yamaguchi
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Hiroki Onda
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Shuhei Yamaoka
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Kazuki Abe
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Shoko Nakamura
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Sho Tanaka
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
| | - Naoyuki Kawagoe
- Division of Diabetes, Metabolism and Endocrinology, Department of Internal Medicine, Toho University Ohashi Medical Center, Tokyo, Japan
| | - Taiki Nabekura
- Department of Surgery, Toho University Sakura Medical Center, Chiba, Japan
| | - Takashi Oshiro
- Department of Surgery, Toho University Sakura Medical Center, Chiba, Japan
| | - Daiji Nagayama
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
- Nagayama Clinic, Tochigi, Japan
| | - Ichiro Tatsuno
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
- Chiba Prefectural University of Health Sciences, Chiba, Japan
| | - Atsuhito Saiki
- Center for Diabetes, Endocrine and Metabolism, Toho University Sakura Medical Center, Chiba, Japan
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Chiappe EL, Martin M, Molli AI, Millan A, Tetzlaff W, Botta E, Ferraro F, Sáez MS, Lorenzon Gonzalez MV, Boero L, Sorroche P, Beskow A, Gutierrez M, Cerrone G, Gutt S, Frechtel G, Brites F. Effect of Roux-en-Y Gastric Bypass on Lipoprotein Metabolism and Markers of HDL Functionality in Morbid Obese Patients. Obes Surg 2020; 31:1092-1098. [PMID: 33128217 DOI: 10.1007/s11695-020-05076-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 10/15/2020] [Accepted: 10/21/2020] [Indexed: 11/24/2022]
Abstract
PURPOSE Morbid obesity represents the most severe form of obesity and surgical intervention would be its only successful treatment. Bariatric surgery could generate modifications in carbohydrate metabolism and in lipid profile plus lipoprotein-associated proteins and enzymes, such as lipoprotein-associated phoslipase A2 (Lp-PLA2), cholesteryl ester transfer protein (CETP), and paraoxonase (PON) 1. The aim of the present study was to analyze changes in inflammation markers, carbohydrate metabolism, and lipid parameters in patients who underwent bariatric surgery. METHODS Thirty-seven patients with morbid obesity were recruited. Evaluations were performed before (T0) and 1 (T1) and 6 (T2) months after surgery. Glucose, insulin, high-sensitivity C-reactive protein (hsCRP), triglycerides, total cholesterol, high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol, apolipoproteins (apo) A-I, and B plus Interleukin 1β and 6 levels in addition to CETP, Lp-PLA2, and PON 1 activities were determined. RESULTS Body mass index decreased at T1 and T2 (p < 0.01). An improvement in all markers of insulin resistance (p < 0.05) was observed at T1. hsCRP levels diminished at T2 (p < 0.05). Triglyceride levels decreased at T1 and T2 (p < 0.05). HDL-C and apo A-I showed a decrease at T1 which was completely reversed at T2 (p < 0.05). Lp-PLA2 activity increased at T1, which was reversed at T2 (p < 0.05), and CETP activity was diminished at T2 (p < 0.05). PON and ARE activities decreased at T1 and partially recovered at T2 (p < 0.05). CONCLUSIONS These results would be indicative of a favorable effect of bariatric surgery on markers of carbohydrate metabolism and cardiovascular disease lipid risk factors.
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Affiliation(s)
- Ezequiel Lozano Chiappe
- Laboratorio de Lipidos y Aterosclerosis, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Maximiliano Martin
- Laboratorio de Lipidos y Aterosclerosis, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina.
| | - Andrea Iglesias Molli
- Laboratorio de Genetica, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Andrea Millan
- Laboratorio de Genetica, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Walter Tetzlaff
- Laboratorio de Lipidos y Aterosclerosis, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Eliana Botta
- Laboratorio de Lipidos y Aterosclerosis, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Florencia Ferraro
- Laboratorio de Lipidos y Aterosclerosis, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Maria S Sáez
- Laboratorio Central, Hospital italiano de Buenos Aires, Pres. Tte. Gral. Juan Domingo Perón 4190, C1199 ABH, Buenos Aires, Argentina
| | - Maria V Lorenzon Gonzalez
- Laboratorio Central, Hospital italiano de Buenos Aires, Pres. Tte. Gral. Juan Domingo Perón 4190, C1199 ABH, Buenos Aires, Argentina
| | - Laura Boero
- Laboratorio de Lipidos y Aterosclerosis, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Patricia Sorroche
- Laboratorio Central, Hospital italiano de Buenos Aires, Pres. Tte. Gral. Juan Domingo Perón 4190, C1199 ABH, Buenos Aires, Argentina
| | - Axel Beskow
- Servicio de Clinica Médica, Sección Nutrición, Hospital italiano de Buenos Aires, Tte. Gral. Juan Domingo Perón 4190, C1199 ABH, Buenos Aires, Argentina
| | - Mercedes Gutierrez
- Servicio de Clinica Médica, Sección Nutrición, Hospital italiano de Buenos Aires, Tte. Gral. Juan Domingo Perón 4190, C1199 ABH, Buenos Aires, Argentina
| | - Gloria Cerrone
- Laboratorio de Genetica, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Susana Gutt
- Servicio de Clinica Médica, Sección Nutrición, Hospital italiano de Buenos Aires, Tte. Gral. Juan Domingo Perón 4190, C1199 ABH, Buenos Aires, Argentina
| | - Gustavo Frechtel
- Laboratorio de Genetica, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
| | - Fernando Brites
- Laboratorio de Lipidos y Aterosclerosis, Facultad de Farmacia y Bioquimica, Universidad de Buenos Aires, Av. Córdoba 2351, C1120, Buenos Aires, Argentina
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Toms R, Mayne DJ, Feng X, Bonney A. Geographic variation in cardiometabolic risk factor prevalence explained by area-level disadvantage in the Illawarra-Shoalhaven region of the NSW, Australia. Sci Rep 2020; 10:12770. [PMID: 32728133 PMCID: PMC7391748 DOI: 10.1038/s41598-020-69552-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 07/14/2020] [Indexed: 11/10/2022] Open
Abstract
Cardiometabolic risk factors (CMRFs) demonstrate significant geographic variation in their distribution. The study aims to quantify the general contextual effect of the areas on CMRFs; and the geographic variation explained by area-level socioeconomic disadvantage. A cross sectional design and multilevel logistic regression methods were adopted. Data included objectively measured routine pathology test data between years 2012 and 2017 on: fasting blood sugar level; glycated haemoglobin; total cholesterol; high density lipoprotein; urinary albumin creatinine ratio; estimated glomerular filtration rate; and body mass index. The 2011 Australian census based Index of Relative Socioeconomic Disadvantage (IRSD) were the area-level study variables, analysed at its smallest geographic unit of reporting. A total of 1,132,029 CMRF test results from 256,525 individuals were analysed. After adjusting for individual-level covariates, all CMRFs significantly associated with IRSD and the probability of higher risk CMRFs increases with greater area-level disadvantage. Though the specific contribution of IRSD in the geographic variation of CMRF ranged between 57.8 and 14.71%, the general contextual effect of areas were found minimal (ICCs 0.6-3.4%). The results support universal interventions proportional to the need and disadvantage level of populations for the prevention and control of CMRFs, rather than any area specific interventions as the contextual effects were found minimal in the study region.
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Affiliation(s)
- Renin Toms
- School of Medicine, University of Wollongong, Wollongong, NSW, 2522, Australia.
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia.
| | - Darren J Mayne
- School of Medicine, University of Wollongong, Wollongong, NSW, 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia
- Public Health Unit, Illawarra Shoalhaven Local Health District, Warrawong, NSW, 2502, Australia
- School of Public Health, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Xiaoqi Feng
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia
- Population Wellbeing and Environment Research Lab (PowerLab), School of Health and Society, Faculty of Social Sciences, University of Wollongong, Wollongong, Australia
- School of Public Health and Community Medicine, University of New South Wales, Sydney, NSW, Australia
| | - Andrew Bonney
- School of Medicine, University of Wollongong, Wollongong, NSW, 2522, Australia
- Illawarra Health and Medical Research Institute, Wollongong, NSW, 2522, Australia
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8
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Altered HDL metabolism in metabolic disorders: insights into the therapeutic potential of HDL. Clin Sci (Lond) 2020; 133:2221-2235. [PMID: 31722013 DOI: 10.1042/cs20190873] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 10/18/2019] [Accepted: 10/25/2019] [Indexed: 12/18/2022]
Abstract
Metabolic disorders are associated with an increased risk of cardiovascular disease (CVD), and are commonly characterized by a low plasma level of high-density lipoprotein cholesterol (HDL-C). Although cholesterol lowering medications reduce CVD risk in these patients, they often remain at increased risk of CVD. Therapeutic strategies that raise HDL-C levels and improve HDL function are a potential treatment option for reducing residual CVD risk in these individuals. Over the past decade, understanding of the metabolism and cardioprotective functions of HDLs has improved, with preclinical and clinical studies both indicating that the ability of HDLs to mediate reverse cholesterol transport, inhibit inflammation and reduce oxidation is impaired in metabolic disorders. These cardioprotective effects of HDLs are supported by the outcomes of epidemiological, cell and animal studies, but have not been confirmed in several recent clinical outcome trials of HDL-raising agents. Recent studies suggest that HDL function may be clinically more important than plasma levels of HDL-C. However, at least some of the cardioprotective functions of HDLs are lost in acute coronary syndrome and stable coronary artery disease patients. HDL dysfunction is also associated with metabolic abnormalities. This review is concerned with the impact of metabolic abnormalities, including dyslipidemia, obesity and Type 2 diabetes, on the metabolism and cardioprotective functions of HDLs.
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9
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de Lima-Junior JC, Virginio VWM, Moura FA, Bertolami A, Bertolami M, Coelho-Filho OR, Zanotti I, Nadruz W, de Faria EC, de Carvalho LSF, Sposito AC. Excess weight mediates changes in HDL pool that reduce cholesterol efflux capacity and increase antioxidant activity. Nutr Metab Cardiovasc Dis 2020; 30:254-264. [PMID: 31753789 DOI: 10.1016/j.numecd.2019.09.017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Revised: 09/02/2019] [Accepted: 09/16/2019] [Indexed: 10/25/2022]
Abstract
BACKGROUND AND AIM Obesity-related decline in high-density lipoprotein (HDL) functions such as cholesterol efflux capacity (CEC) has supported the notion that this lipoprotein dysfunction may contribute for atherogenesis among obese patients. We investigated if potentially other HDL protective actions may be affected with weight gain and these changes may occur even before the obesity range in a cross-sectional analysis. METHODS AND RESULTS Lipid profile, body mass index (BMI), biochemical measurements, and carotid intima-media thickness (cIMT) were obtained in this cross-sectional study with 899 asymptomatic individuals. Lipoproteins were separated by ultracentrifugation and HDL physical-chemical characterization, CEC, antioxidant activity, anti-inflammatory activity, HDL-mediated platelet aggregation inhibition were measured in a randomly-selected subgroup (n = 101). Individuals with increased HDL-C had an attenuated increase in cIMT with elevation of BMI (interaction effect β = -0.054; CI 95% -0.0815, -0.0301). CEC, HDL-C, HDL size and HDL-antioxidant activity were negatively associated with cIMT. BMI was inversely correlated with HDL-mediated inhibition of platelet aggregation (Spearman's rho -0.157, p < 0.03) and CEC (Spearman's rho -0.32, p < 0.001), but surprisingly it was directly correlated with the antioxidant activity (Spearman's rho 0.194, p = 0.052). Thus, even in non-obese, non-diabetic individuals, increased BMI is associated with a wide change in protective functions of HDL, reducing CEC and increasing antioxidant activity. In these subjects, decreased HDL concentration, size or function are related to increased atherosclerotic burden. CONCLUSION Our findings demonstrate that in non-obese, non-diabetic individuals, the increasing values of BMI are associated with impaired protective functions of HDL and concomitant increase in atherosclerotic burden.
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Affiliation(s)
- Jose Carlos de Lima-Junior
- Laboratory of Atherosclerosis and Vascular Biology, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil
| | - Vitor W M Virginio
- Laboratory of Atherosclerosis and Vascular Biology, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil
| | - Filipe A Moura
- Laboratory of Atherosclerosis and Vascular Biology, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil; Department of Cardiology, Brigham and Women's Hospital, Boston, New England, United States
| | - Adriana Bertolami
- Department of Dyslipidemia, Dante Pazzanese Cardiological Institute, São Paulo, Brazil
| | - Marcelo Bertolami
- Department of Dyslipidemia, Dante Pazzanese Cardiological Institute, São Paulo, Brazil
| | - Otavio R Coelho-Filho
- Department of Internal Medicine, Cardiology Division, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil
| | - Ilaria Zanotti
- Department of Food and Drug, University of Parma, Parma, Italy
| | - Wilson Nadruz
- Department of Internal Medicine, Cardiology Division, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil
| | - Eliana Cotta de Faria
- Lipids Laboratory, Department of Clinical Pathology, Faculty of Medical Sciences, State University of Campinas, Sao Paulo, Brazil
| | - Luiz Sergio F de Carvalho
- Laboratory of Atherosclerosis and Vascular Biology, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil; Department of Internal Medicine, Cardiology Division, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil
| | - Andrei C Sposito
- Laboratory of Atherosclerosis and Vascular Biology, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil; Department of Internal Medicine, Cardiology Division, Faculty of Medical Sciences, State University of Campinas, São Paulo, Brazil.
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10
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Abstract
The last few decades have witnessed a global rise in the number of older individuals. Despite this demographic shift, morbidity within this population group is high. Many factors influence healthspan; however, an obesity pandemic is emerging as a significant determinant of older people's health. It is well established that obesity adversely affects several metabolic systems. However, due to its close association with overall cardiometabolic health, the impact that obesity has on cholesterol metabolism needs to be recognised. The aim of the present review is to critically discuss the effects that obesity has on cholesterol metabolism and to reveal its significance for healthy ageing.
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11
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Kobos LM, Alqatani S, Ferreira CR, Aryal UK, Hedrick V, Sobreira TJP, Shannahan JH. An Integrative Proteomic/Lipidomic Analysis of the Gold Nanoparticle Biocorona in Healthy and Obese Conditions. ACTA ACUST UNITED AC 2019; 5:150-166. [PMID: 32292798 DOI: 10.1089/aivt.2019.0005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Introduction: When nanoparticles (NPs) enter a physiological environment, a coating of biomolecules or biocorona (BC) forms on the surface. Formation of the NP-BC is dependent on NP properties, the physiological environment, and time. The BC influences NP properties and biological interactions such as cellular internalization, immune responses, biodistribution, and others, leading to pharmacological and toxicological consequences. To date, examination of the NP-BC has focused primarily on protein components and healthy conditions. Therefore, we evaluated the protein and lipid content of BCs that formed on physicochemically distinct gold nanoparticles (AuNPs) under healthy and obese conditions. A comprehensive understanding of the NP-BC is necessary for the translation of in vitro toxicity assessments to clinical applications. Materials and Methods: AuNPs with two coatings (poly-N-vinylpyrrolidone [PVP] or citrate) and diameters (20 or 100 nm) were incubated in pooled human serum, and an integrated proteomic/lipidomic approach was used to evaluate BC composition. Macrophages were utilized to evaluate differential immune responses due to variations in the AuNP-BC. Results: AuNPs form distinct BCs based on physicochemical properties and the surrounding environment, with the obese BC containing more proteins and fewer lipids than the healthy BC. Differential macrophage inflammatory responses were observed based on AuNP properties and BC composition. Discussion and Conclusion: Overall, these findings demonstrate that AuNP size and coating, as well as physiological environment, influence the protein and lipid composition of the BC, which impacts cellular responses following exposure. These findings demonstrate that incorporation of BCs representing distinct physiological conditions may enhance the translatability of nanosafety in vitro studies.
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Affiliation(s)
- Lisa M Kobos
- School of Health Sciences, College of Health and Human Sciences, Purdue University, West Lafayette, Indiana
| | - Saeed Alqatani
- School of Health Sciences, College of Health and Human Sciences, Purdue University, West Lafayette, Indiana.,National Center for Pharmaceuticals, Life Science and Environment Research Institute, King Abdulaziz City for Science and Technology, Riyadh, Saudi Arabia
| | - Christina R Ferreira
- Department of Chemistry and Center for Analytical Instrumentation Development, Purdue University, West Lafayette, Indiana
| | - Uma K Aryal
- Purdue Proteomics Facility, Bindley Bioscience Center, Discovery Park, Purdue University, West Lafayette, Indiana
| | - Victoria Hedrick
- Purdue Proteomics Facility, Bindley Bioscience Center, Discovery Park, Purdue University, West Lafayette, Indiana
| | - Tiago J P Sobreira
- Computational Life Sciences and Informatics, Bindley Bioscience Center, Discovery Park, Purdue University, West Lafayette, Indiana
| | - Jonathan H Shannahan
- School of Health Sciences, College of Health and Human Sciences, Purdue University, West Lafayette, Indiana
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12
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Consumption of Cuban Policosanol Improves Blood Pressure and Lipid Profile via Enhancement of HDL Functionality in Healthy Women Subjects: Randomized, Double-Blinded, and Placebo-Controlled Study. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:4809525. [PMID: 29854085 PMCID: PMC5944267 DOI: 10.1155/2018/4809525] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 12/03/2017] [Accepted: 12/18/2017] [Indexed: 12/16/2022]
Abstract
Policosanol has been reported to improve blood pressure, lipid profile, and HDL functionality via inhibition of cholesteryl ester transfer protein (CETP) both in vitro and in vivo in zebrafish and human models. However, there are limited reports and randomized, double-blinded trials on policosanol that could advocate the blood pressure-lowering effect in prehypertensive participants. Therefore, we performed in vitro, in vivo, and ex vivo experiments to provide more substantial and concrete data on the blood pressure-lowering effect of policosanol. Consumption of policosanol for 8 weeks enhanced plasma antioxidant activity. In the policosanol group, plasma total cholesterol (TC) and triglyceride (TG) levels were reduced up to 20% and 14%, respectively, and HDL-C level was elevated up to 1.3-fold compared to that at week 0. TG/HDL-C and cholesteryl ester transfer protein (CETP) activities were reduced up to 36% and 20%, respectively. Uptake of oxidized LDL in macrophages was reduced as oxidized species levels were reduced, and HDL2-associated paraoxonase activities were enhanced by 60% compared to those at week 0. Encapsulation of policosanol into reconstituted HDL (PCO-rHDL) enhanced cholesterol efflux activity and insulin secretion capacity. In conclusion, consumption of policosanol for 8 weeks in healthy female subjects resulted in lowered blood pressure and CETP activity via elevation of HDL/apoA-I contents and enhancement of HDL functionalities, including cholesterol efflux and insulin secretion. These functional enhancements of HDL can contribute to the prevention of aging-related diseases, hypertension, and stroke.
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13
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Seo YJ, Kim KJ, Choi J, Koh EJ, Lee BY. Spirulina maxima Extract Reduces Obesity through Suppression of Adipogenesis and Activation of Browning in 3T3-L1 Cells and High-Fat Diet-Induced Obese Mice. Nutrients 2018; 10:nu10060712. [PMID: 29865208 PMCID: PMC6024816 DOI: 10.3390/nu10060712] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 05/30/2018] [Accepted: 05/31/2018] [Indexed: 02/08/2023] Open
Abstract
Obesity predisposes animals towards the metabolic syndrome and diseases such as type 2 diabetes, atherosclerosis, and cardiovascular disease. Spirulina maxima is a microalga with anti-oxidant, anti-cancer, and neuroprotective activities, but the anti-obesity effect of Spirulina maxima 70% ethanol extract (SM70EE) has not yet been fully established. We investigated the effect of SM70EE on adipogenesis, lipogenesis, and browning using in vitro and in vivo obesity models. SM70EE treatment reduced lipid droplet accumulation by the oil red O staining method and downregulated the adipogenic proteins C/EBPα, PPARγ, and aP2, and the lipogenic proteins SREBP1, ACC, FAS, LPAATβ, Lipin1, and DGAT1 by western blot analysis. In addition, the index components of SM70EE, chlorophyll a, and C-phycocyanin, reduced adipogenesis and lipogenesis protein levels in 3T3-L1 and C3H10T1/2 cells. High-fat diet (HFD)-fed mice administered with SM70EE demonstrated smaller adipose depots and lower blood lipid concentrations than control HFD-fed mice. The lower body mass gain in treated SM70EE-administrated mice was associated with lower protein expression of adipogenesis factors and higher expression of AMPKα-induced adipose browning proteins PRDM16, PGC1α, and UCP1. SM70EE administration ameliorates obesity, likely by reducing adipogenesis and activating the thermogenic program, in 3T3-L1 cells and HFD-induced obese mice.
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MESH Headings
- 3T3-L1 Cells
- Adipocytes, Brown/drug effects
- Adipocytes, Brown/metabolism
- Adipocytes, Brown/pathology
- Adipocytes, White/drug effects
- Adipocytes, White/metabolism
- Adipocytes, White/pathology
- Adipogenesis/drug effects
- Adiposity/drug effects
- Animals
- Anti-Obesity Agents/isolation & purification
- Anti-Obesity Agents/pharmacology
- Diet, High-Fat
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Energy Metabolism/drug effects
- Lipid Droplets/drug effects
- Lipid Droplets/metabolism
- Lipid Droplets/pathology
- Lipids/blood
- Lipogenesis/drug effects
- Male
- Mice
- Mice, Inbred ICR
- Obesity/blood
- Obesity/pathology
- Obesity/physiopathology
- Obesity/prevention & control
- Spirulina/chemistry
- Thermogenesis/drug effects
- Time Factors
- Weight Gain/drug effects
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Affiliation(s)
- Young-Jin Seo
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
| | - Kui-Jin Kim
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
| | - Jia Choi
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
| | - Eun-Jeong Koh
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
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14
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Talbot CPJ, Plat J, Joris PJ, Konings M, Kusters YHAM, Schalkwijk CG, Ritsch A, Mensink RP. HDL cholesterol efflux capacity and cholesteryl ester transfer are associated with body mass, but are not changed by diet-induced weight loss: A randomized trial in abdominally obese men. Atherosclerosis 2018; 274:23-28. [PMID: 29747087 DOI: 10.1016/j.atherosclerosis.2018.04.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 04/04/2018] [Accepted: 04/24/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND AND AIMS Obesity is associated with a lower HDL-mediated cholesterol efflux from macrophages and a higher CETP (cholesteryl ester transfer protein) activity, but effects of weight loss are not clear. In addition, associations with visceral and subcutaneous adipose tissue are not known. We therefore investigated effects of diet-induced weight loss on HDL-mediated cholesterol efflux and cholesterol ester (CE) transfer in abdominally obese men. Differences between normal-weight and abdominally obese men were also examined. METHODS Twenty-five apparently healthy, normal-weight men (waist circumference: <94 cm) and 52 abdominally obese men (waist circumference: 102-110 cm) were included. Abdominally obese subjects were randomly allocated to a dietary weight-loss intervention group or a no-weight loss control group. Individuals from the intervention group followed a very-low-calorie diet for 6 weeks to obtain a waist circumference below 102 cm, followed by a 2-week weight-stable period. Cholesterol efflux was measured in BODIPY-labeled murine J774 macrophages. CE transfer was measured by quantifying the transfer of CE from radiolabeled exogenous HDL to apoB-containing lipoproteins. RESULTS Cholesterol efflux capacity was 9 percentage point (pp) lower in abdominally obese than in normal-weight men (p≤0.001), while CE transfer was 5 pp higher (p≤0.01). Diet-induced weight-loss of 10.3 kg did not change cholesterol efflux and CE transfer. In addition, stepwise regression analysis did not suggest that the different fat depots are differently related to efflux capacity and CE transfer. CONCLUSIONS After a 2-week weight-stable period, dietary weight loss of 10 kg did not improve ABCA1-mediated cholesterol efflux and CE transfer in abdominally obese men.
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Affiliation(s)
- Charlotte P J Talbot
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands.
| | - Jogchum Plat
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Peter J Joris
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Maurice Konings
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
| | - Yvo H A M Kusters
- Department of Internal Medicine, CARIM (School for Cardiovascular Diseases), Maastricht University Medical Center, Maastricht, Netherlands
| | - Casper G Schalkwijk
- Department of Internal Medicine, CARIM (School for Cardiovascular Diseases), Maastricht University Medical Center, Maastricht, Netherlands
| | | | - Ronald P Mensink
- Department of Nutrition and Movement Sciences, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, The Netherlands
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15
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Auer MK, Ebert T, Pietzner M, Defreyne J, Fuss J, Stalla GK, T'Sjoen G. Effects of Sex Hormone Treatment on the Metabolic Syndrome in Transgender Individuals: Focus on Metabolic Cytokines. J Clin Endocrinol Metab 2018; 103:790-802. [PMID: 29216353 DOI: 10.1210/jc.2017-01559] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 11/30/2017] [Indexed: 12/16/2022]
Abstract
CONTEXT Hormonal treatment in transgender persons affects many components of the metabolic syndrome (MS). OBJECTIVE To determine the role of direct hormonal effects, changes in metabolic cytokines, and body composition on metabolic outcomes. DESIGN, SETTING, AND PARTICIPANTS 24 transwomen and 45 transmen from the European Network for the Investigation of Gender Incongruence were investigated at baseline and after 12 months of hormonal therapy. OUTCOME MEASURES Best predictors for changes in components of MS, applying least absolute shrinkage and selection operator regression. RESULTS In transwomen, a decrease in triglyceride levels was best explained by a decrease in fat mass and an increase in fibroblast growth factor 21 (FGF-21); the decrease in total and low-density lipoprotein cholesterol levels was principally due to a decrease in resistin. A decrease in high-density lipoprotein cholesterol depended on an inverse association with fat mass. In contrast, in transmen, an increase in low-density lipoprotein cholesterol was predicted by a decrease in FGF-21 and an increase in the waist/hip ratio; a decrease in the high-density lipoprotein/total cholesterol ratio depended on a decline in adiponectin levels. In transwomen, worsened insulin resistance and increased early insulin response seemed to be due to a direct treatment effect; however, improvements in hepatic insulin sensitivity in transmen were best predicted by a positive association with chemerin, resistin, and FGF-21 and were inversely related to changes in the waist/hip ratio and leptin and adipocyte fatty acid-binding protein levels. CONCLUSIONS The effects of hormonal therapy on different components of the MS are sex-specific and involve a complex interplay of direct hormonal effects, changes in body composition, and metabolic cytokine secretion.
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Affiliation(s)
- Matthias K Auer
- Endocrinology, Diabetology and Internal Medicine, Max Planck Institute of Psychiatry, Munich, Germany
- Medizinische Klinik und Poliklinik IV, Klinikum der Ludwig-Maximilians-Universität, Munich, Germany
| | - Thomas Ebert
- Department of Endocrinology and Nephrology, University of Leipzig, Leipzig, Germany
- Integrated Research and Treatment Center Adiposity Diseases, University Medical Center Leipzig, Leipzig, Germany
| | - Maik Pietzner
- Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany
| | - Justine Defreyne
- Department of Endocrinology and Center of Sexology and Gender, Ghent University Hospital, Ghent, Belgium
| | - Johannes Fuss
- Human Behavior Laboratory, Institute of Sex Research and Forensic Psychiatry, University Medical Center, Hamburg-Eppendorf, Hamburg, Germany
| | - Günter K Stalla
- Endocrinology, Diabetology and Internal Medicine, Max Planck Institute of Psychiatry, Munich, Germany
| | - Guy T'Sjoen
- Department of Endocrinology and Center of Sexology and Gender, Ghent University Hospital, Ghent, Belgium
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16
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Dizaji BF, Rivandi M, Javandoost A, Saberi Karimian M, Raei A, Sahebkar A, Ferns G, Mobarhan MG, Pasdar A. Association of genetic polymorphisms of PON1 and CETP with the presence of metabolic syndrome; the effects of genotypes on their serum activity and concentrations. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2018. [DOI: 10.1016/j.ejmhg.2017.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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17
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Park KH, Yadav D, Kim SJ, Kim JR, Cho KH. Slim Body Weight Is Highly Associated With Enhanced Lipoprotein Functionality, Higher HDL-C, and Large HDL Particle Size in Young Women. Front Endocrinol (Lausanne) 2018; 9:406. [PMID: 30072955 PMCID: PMC6060307 DOI: 10.3389/fendo.2018.00406] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 06/29/2018] [Indexed: 11/19/2022] Open
Abstract
There has been no information about the correlations between body weight distribution and lipoprotein metabolism in terms of high-density lipoproteins-cholesterol (HDL-C) and cholesteryl ester transfer protein (CETP). In this study, we analyzed the quantity and quality of HDL correlations in young women (21.5 ± 1.2-years-old) with a slim (n = 21, 46.2 ± 3.8 kg) or plump (n = 30, 54.6 ± 4.4 kg) body weight. Body weight was inversely correlated with the percentage of HDL-C in total cholesterol (TC). The plump group showed 40% higher body fat (26 ± 3 %) and 86% more visceral fat mass (VFM, 1.3 ± 0.3 kg) than the slim group, which showed 18 ± 2% body fat and 0.7 ± 0.2 kg of VFM. Additionally, the plump group showed 20% higher TC, 58% higher triglyceride (TG), and 12% lower HDL-C levels in serum. The slim group showed 34% higher apoA-I but 15% lower CETP content in serum compared to the plump group. The slim group showed a 13% increase in particle size and 1.9-fold increase in particle number with enhanced cholesterol efflux activity. Although the plump group was within a normal body mass index (BMI) range, its lipid profile and lipoprotein properties were distinctly different from those of the slim group in terms of CETP mass and activity, HDL functionality, and HDL particle size.
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Affiliation(s)
- Ki-Hoon Park
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea
- LipoLab, Gyeongsan, South Korea
| | - Dhananjay Yadav
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea
- LipoLab, Gyeongsan, South Korea
| | - Suk-Jeong Kim
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea
- LipoLab, Gyeongsan, South Korea
| | - Jae-Ryong Kim
- Department of Biochemistry and Molecular Biology, Smart-Aging Convergence Research Center, College of Medicine, Yeungnam University, Daegu, South Korea
| | - Kyung-Hyun Cho
- Department of Medical Biotechnology, Yeungnam University, Gyeongsan, South Korea
- Research Institute of Protein Sensor, Yeungnam University, Gyeongsan, South Korea
- LipoLab, Gyeongsan, South Korea
- *Correspondence: Kyung-Hyun Cho
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18
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Choi J, Kim KJ, Koh EJ, Lee BY. Gelidium elegans Regulates the AMPK-PRDM16-UCP-1 Pathway and Has a Synergistic Effect with Orlistat on Obesity-Associated Features in Mice Fed a High-Fat Diet. Nutrients 2017; 9:E342. [PMID: 28358328 PMCID: PMC5409681 DOI: 10.3390/nu9040342] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Accepted: 03/28/2017] [Indexed: 12/14/2022] Open
Abstract
The incidence of obesity is rising at an alarming rate throughout the world and is becoming a major public health concern with incalculable social and economic costs. Gelidium elegans (GENS), also previously known as Gelidium amansii, has been shown to exhibit anti-obesity effects. Nevertheless, the mechanism by which GENS is able to do this remains unclear. In the present study, our results showed that GENS prevents high-fat diet (HFD)-induced weight gain through modulation of the adenosine monophosphate-activated protein kinase (AMPK)-PR domain-containing16 (PRDM16)-uncoupling protein-1 (UCP-1) pathway in a mice model. We also found that GENS decreased hyperglycemia in mice that had been fed a HFD compared to corresponding controls. We also assessed the beneficial effect of the combined treatment with GENS and orlistat (a Food and Drug Administration-approved obesity drug) on obesity characteristics in HFD-fed mice. We found that in HFD-fed mice, the combination of GENS and orlistat is associated with more significant weight loss than orlistat treatment alone. Moreover, our results demonstrated a positive synergistic effect of GENS and orlistat on hyperglycemia and plasma triglyceride level in these animals. Thus, we suggest that a combination therapy of GENS and orlistat may positively influence obesity-related health outcomes in a diet-induced obese population.
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Affiliation(s)
- Jia Choi
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
| | - Kui-Jin Kim
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
| | - Eun-Jeong Koh
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
| | - Boo-Yong Lee
- Department of Food Science and Biotechnology, College of Life Science, CHA University, Seongnam, Kyeonggi 463-400, Korea.
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Association of body composition assessed by bioelectrical impedance analysis with metabolic risk factor clustering among middle-aged Chinese. Prev Med Rep 2017; 6:191-196. [PMID: 28367400 PMCID: PMC5369856 DOI: 10.1016/j.pmedr.2017.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Revised: 02/25/2017] [Accepted: 03/20/2017] [Indexed: 12/25/2022] Open
Abstract
Body composition monitor (BCM) based on the bioelectric impedance analysis is very convenient to use. However, whether percentage body fat (PBF) and visceral fat index (VFI) that acquired by BCM are superior to anthropometric measures is unknown. The study explored whether PBF and VFI are better than anthropometric indexes [body mass index (BMI), waist circumference (WC) and waist circumference to height ratio(WHtR)] in predicating metabolic risk factor clustering in a representive sample across China which included 9574 Chinese men and women that were investigated in 2009–2010. PBF and VFI were compared with the BMI, WC, and WHtR through the area under the curve (AUC) of the receiver operating characteristic (ROC) curve and logistic regression. The results showed that the AUC for VFI was higher than BMI and PBF but lower than WHtR and WC in both men and Women. The AUC for WHtR, WC, VFI, BMI and PBF was 0.710, 0.706, 0.700, 0.693, 0.656 in men and 0.705, 0.699, 0.698, 0.675, 0.657 in women, respectively. After adjusting for the potential confounding factors, the odds ratios (ORs) tended to increase with all the indexes. The curve of ORs for WHtR was steepest and the curve for PBF was flattest in both men and women; the curve for VFI was similar to WC in women, but flatter than WC in men. From the data we concluded that VFI seems better than BMI and PBF, but not superior to WC and WHtR in predicating metabolic risk factor clustering in the middle-aged Chinese. Controversy remains with regard to the best index for diagnosis of obesity. A representive sample of 9574 middle-aged Chinese across China were analyzed. The value of Visceral fat index (VFI) and percentage body fat (PBF) were explored. VFI seems better than BMI and PBF in predicating metabolic risk factor clustering. VFI is not superior to WC and WHtR in predicating metabolic risk factor clustering.
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20
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Palmisano BT, Le TD, Zhu L, Lee YK, Stafford JM. Cholesteryl ester transfer protein alters liver and plasma triglyceride metabolism through two liver networks in female mice. J Lipid Res 2016; 57:1541-51. [PMID: 27354419 DOI: 10.1194/jlr.m069013] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Indexed: 02/06/2023] Open
Abstract
Elevated plasma TGs increase risk of cardiovascular disease in women. Estrogen treatment raises plasma TGs in women, but molecular mechanisms remain poorly understood. Here we explore the role of cholesteryl ester transfer protein (CETP) in the regulation of TG metabolism in female mice, which naturally lack CETP. In transgenic CETP females, acute estrogen treatment raised plasma TGs 50%, increased TG production, and increased expression of genes involved in VLDL synthesis, but not in nontransgenic littermate females. In CETP females, estrogen enhanced expression of small heterodimer partner (SHP), a nuclear receptor regulating VLDL production. Deletion of liver SHP prevented increases in TG production and expression of genes involved in VLDL synthesis in CETP mice with estrogen treatment. We also examined whether CETP expression had effects on TG metabolism independent of estrogen treatment. CETP increased liver β-oxidation and reduced liver TG content by 60%. Liver estrogen receptor α (ERα) was required for CETP expression to enhance β-oxidation and reduce liver TG content. Thus, CETP alters at least two networks governing TG metabolism, one involving SHP to increase VLDL-TG production in response to estrogen, and another involving ERα to enhance β-oxidation and lower liver TG content. These findings demonstrate a novel role for CETP in estrogen-mediated increases in TG production and a broader role for CETP in TG metabolism.
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Affiliation(s)
- Brian T Palmisano
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN Department of Molecular Physiology and Biophysics Vanderbilt University Medical Center, Nashville, TN
| | - Thao D Le
- Department of Molecular Physiology and Biophysics Vanderbilt University Medical Center, Nashville, TN
| | - Lin Zhu
- Department of Molecular Physiology and Biophysics Vanderbilt University Medical Center, Nashville, TN Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
| | - Yoon Kwang Lee
- Department of Integrative Medical Sciences, Northeast Ohio Medical University, Rootstown, OH
| | - John M Stafford
- Tennessee Valley Healthcare System, Department of Veterans Affairs, Nashville, TN Department of Molecular Physiology and Biophysics Vanderbilt University Medical Center, Nashville, TN Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN
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21
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Ezeukwu AO, Agwubike EO, Uadia PO. Differential Effects of Continuous and Interval Exercise Training on the Atherogenic Index of Plasma in the Non-Obese Young Male. ACTA CARDIOLOGICA SINICA 2016; 31:337-44. [PMID: 27122890 DOI: 10.6515/acs20150319a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
BACKGROUND The process of atherogenicity is known to be influenced by exercise. However, appropriate exercise stimulus necessary to generate the response and adaptation in sedentary non-obese individuals has not yet been investigated. The purpose of the present study was to compare the effects of an 8-week continuous training and corresponding interval training on the atherogenic index of plasma in sedentary Nigerian males. METHODS Overall, there were 54 male university students that participated in our study, which used a pretest- posttest control group design. Participants (18 males per group) were assigned into continuous, interval and control groups respectively. During the first two weeks, training was done 3 times weekly for 30 minutes each day, and was increased by 5 minutes every 2 weeks. Continuous training was done at 70-84% of heart rate reserve. Interval training was done at 70-84%/30-39% heart rate reserve in 1:2 minutes work/rest intervals, respectively. The control group did not participate in the training. Data collected were analysed using descriptive, paired t-test, analysis of covariance and Bonferroni post-hoc analysis. RESULTS Young sedentary non-obese males were at high risk (atherogenic index of plasma > 0.24) of cardiovascular diseases/conditions. However, continuous training led to significant reductions (p = 0.002) in the atherogenic index of plasma. In contrast, non-significant increase (p = 0.084) followed interval training. After controlling for baseline values, only continuous training still had significant effects on atherogenic index of plasma when compared with other groups. CONCLUSIONS Continuous training of vigorous intensity is better than a corresponding interval training protocol as a natural anti-atherogenic method of reducing risk of cardiovascular event in sedentary non-obese males. KEY WORDS Atherogenicity; Cholesterol; Exercise; Training; Vigorous.
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Affiliation(s)
| | | | - Patrick O Uadia
- Department of Biochemistry, University of Benin, Benin City, Nigeria
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Denimal D, Nguyen A, Pais de Barros JP, Bouillet B, Petit JM, Vergès B, Duvillard L. Major changes in the sphingophospholipidome of HDL in non-diabetic patients with metabolic syndrome. Atherosclerosis 2016; 246:106-14. [DOI: 10.1016/j.atherosclerosis.2015.12.042] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Revised: 12/03/2015] [Accepted: 12/29/2015] [Indexed: 01/07/2023]
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Cappel DA, Lantier L, Palmisano BT, Wasserman DH, Stafford JM. CETP Expression Protects Female Mice from Obesity-Induced Decline in Exercise Capacity. PLoS One 2015; 10:e0136915. [PMID: 26313355 PMCID: PMC4551677 DOI: 10.1371/journal.pone.0136915] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Accepted: 08/10/2015] [Indexed: 01/12/2023] Open
Abstract
Pharmacological approaches to reduce obesity have not resulted in dramatic reductions in the risk of coronary heart disease (CHD). Exercise, in contrast, reduces CHD risk even in the setting of obesity. Cholesteryl Ester Transfer Protein (CETP) is a lipid transfer protein that shuttles lipids between serum lipoproteins and tissues. There are sexual-dimorphisms in the effects of CETP in humans. Mice naturally lack CETP, but we previously reported that transgenic expression of CETP increases muscle glycolysis in fasting and protects against insulin resistance with high-fat diet (HFD) feeding in female but not male mice. Since glycolysis provides an important energy source for working muscle, we aimed to define if CETP expression protects against the decline in exercise capacity associated with obesity. We measured exercise capacity in female mice that were fed a chow diet and then switched to a HFD. There was no difference in exercise capacity between lean, chow-fed CETP female mice and their non-transgenic littermates. Female CETP transgenic mice were relatively protected against the decline in exercise capacity caused by obesity compared to WT. Despite gaining similar fat mass after 6 weeks of HFD-feeding, female CETP mice showed a nearly two-fold increase in run distance compared to WT. After an additional 6 weeks of HFD-feeding, mice were subjected to a final exercise bout and muscle mitochondria were isolated. We found that improved exercise capacity in CETP mice corresponded with increased muscle mitochondrial oxidative capacity, and increased expression of peroxisome proliferator-activated receptor gamma coactivator 1-alpha (PGC-1α). These results suggest that CETP can protect against the obesity-induced impairment in exercise capacity and may be a target to improve exercise capacity in the context of obesity.
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Affiliation(s)
- David A. Cappel
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Louise Lantier
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - Brian T. Palmisano
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - David H. Wasserman
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
| | - John M. Stafford
- VA Tennessee Valley Healthcare System, Nashville, Tennessee, United States of America
- Division of Diabetes, Endocrinology, & Metabolism, Department of Internal Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- Department of Molecular Physiology and Biophysics, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America
- * E-mail:
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Hitchcock E, Patankar JV, Tyson C, Hrynchak M, Hayden MR, Gibson WT. A novel microdeletion affecting the CETP gene raises HDL-associated cholesterol levels. Clin Genet 2015; 89:495-500. [PMID: 26126777 DOI: 10.1111/cge.12633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Revised: 06/27/2015] [Accepted: 06/29/2015] [Indexed: 11/30/2022]
Abstract
We describe a novel, inherited 16q13 microdeletion that removes cholesteryl ester transfer protein (CETP) and several nearby genes. The proband was originally referred for severe childhood-onset obesity and moderate developmental delay, but his fasting lipid profile revealed relatively high levels of high density lipoprotein cholesterol (HDL-C) and relatively low levels of low density lipoprotein cholesterol (LDL-C) for age, despite his obesity. Testing of first-degree relatives identified two other microdeletion carriers. Functional assays in affected individuals showed decreased CETP mRNA expression and enzymatic activity. This microdeletion may or may not be pathogenic for obesity and developmental delay, but based on the lipid profile, the functional studies, and the phenotype of other patients with loss-of-function mutations of CETP, we believe this microdeletion to be antipathogenic for cardiovascular disease.
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Affiliation(s)
- E Hitchcock
- Child and Family Research Institute, Vancouver, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, Canada
| | - J V Patankar
- Department of Medical Genetics, University of British Columbia, Vancouver, Canada.,Centre for Molecular Medicine and Therapeutics, Vancouver, Canada
| | - C Tyson
- Cytogenetic Laboratory, Royal Columbian Hospital, New Westminster, Canada
| | - M Hrynchak
- Cytogenetic Laboratory, Royal Columbian Hospital, New Westminster, Canada
| | - M R Hayden
- Department of Medical Genetics, University of British Columbia, Vancouver, Canada.,Centre for Molecular Medicine and Therapeutics, Vancouver, Canada
| | - W T Gibson
- Child and Family Research Institute, Vancouver, Canada.,Department of Medical Genetics, University of British Columbia, Vancouver, Canada
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Wang W, He Y, Xu P, You Q, Xiao H, Xiang H. Synthesis and biological evaluation of isoflavone amide derivatives with antihyperlipidemic and preadipocyte antiproliferative activities. Bioorg Med Chem 2015; 23:4428-4433. [PMID: 26145818 DOI: 10.1016/j.bmc.2015.06.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2015] [Revised: 06/06/2015] [Accepted: 06/08/2015] [Indexed: 01/13/2023]
Abstract
A series of isoflavone amides were designed with isoflavone in place of the scaffold of 2-arylbenzoxazole as cholesterol ester transfer protein (CETP) inhibitors. Twelve new compounds were synthesized, and their inhibitory activities of CETP and preadipocyte proliferation were assayed. The hypolipidemic potency of the most effective compound HY-2c was further tested in vivo by hamster. The results indicate that HY-2c exhibited favorable antihyperlipidemic and preadipocyte antiproliferative activities.
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Affiliation(s)
- Wenbin Wang
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China
| | - Yi He
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China
| | - Pei Xu
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China
| | - Qidong You
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China
| | - Hong Xiao
- Nanjing Brain Hospital Affiliated to Nanjing Medical University, 264 Guangzhou Road, Nanjing 210029, PR China.
| | - Hua Xiang
- Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China; Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, PR China.
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Jeenduang N, Porntadavity S, Nuinoon M, Horpet D, Thepkwan N, Thaworn P, Theanmontri S. Studies of the CETP TaqIB and ApoE Polymorphisms in Southern Thai Subjects with the Metabolic Syndrome. Biochem Genet 2015; 53:184-99. [DOI: 10.1007/s10528-015-9680-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 05/12/2015] [Indexed: 02/07/2023]
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Emamian M, Avan A, Pasdar A, Mirhafez SR, Sadeghzadeh M, Moghadam MS, Parizadeh SMR, Ferns GA, Ghayour-Mobarhan M. The lipoprotein lipase S447X and cholesteryl ester transfer protein rs5882 polymorphisms and their relationship with lipid profile in human serum of obese individuals. Gene 2015; 558:195-9. [PMID: 25579610 DOI: 10.1016/j.gene.2014.12.070] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 12/06/2014] [Accepted: 12/10/2014] [Indexed: 01/09/2023]
Abstract
BACKGROUND Obesity is often associated with an alter lipid profile, e.g., raised serum triglycerides (TG) and low high-density lipoprotein (HDL) cholesterol levels, both important risk factor for cardiovascular-diseases. The aim of current study was to explore the association of a polymorphism of the lipoprotein lipase (LPL) rs328 and cholesteryl-ester-transfer-protein (CETP) rs5882 genes in relation to lipid profile in subjects with/without obesity. SUBJECTS/METHODS Genotyping was carried out in 271 individuals, (151 obese subjects and 120 non-obese). Univariate/multivariate analyses were conducted to evaluate the association of these genetic-polymorphisms with obesity and lipid components. RESULTS Obese subjects had a significantly (P<0.05) higher level of triglyceride (TG), blood pressure, waist-circumference and fasting-blood-glucose, and lower level of HDL-C. LPL and CETP polymorphisms were not associated with obesity in our population. However, the LPL rs328-GG-GC genotype was significantly related to a higher concentration of TG, compared to the CC wild-type; and a higher HDL-C level in the obesity-group with respect to the control group. Moreover, obese-subjects carrying the G allele of CETP had a significantly lower level of HDL-C (P<0.05) compared to those with C allele. CONCLUSION We demonstrate a significant association of LPL and CETP polymorphisms with serum triglycerides and HDL-cholesterol.
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Affiliation(s)
- Marzieh Emamian
- Department of New Science and Technologies, Cardiovascular Research Center, Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Biochemistry, Faculty of Science, Payame Noor University, Mashhad, Iran
| | - Amir Avan
- Department of New Science and Technologies, Cardiovascular Research Center, Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Department of Medical Oncology, VU University Medical Center, Amsterdam, De Boelelaan 1117, 1081 HV Amsterdam, The Netherlands
| | - Alireza Pasdar
- Department of New Science and Technologies, Cardiovascular Research Center, Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran; Division of Applied Medicine, Medical School, University of Aberdeen, Foresterhill, Aberdeen AB25 2ZD, UK
| | - Seyed Reza Mirhafez
- Department of New Science and Technologies, Cardiovascular Research Center, Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahsa Sadeghzadeh
- Department of New Science and Technologies, Cardiovascular Research Center, Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Masoud Saleh Moghadam
- Department of Biochemistry, Faculty of Science, Payame Noor University, Mashhad, Iran
| | - Seyed Mohammad Reza Parizadeh
- Department of New Science and Technologies, Cardiovascular Research Center, Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Gordon A Ferns
- Brighton & Sussex Medical School, Division of Medical Education, Falmer, Brighton, Sussex BN1 9PH, UK
| | - Majid Ghayour-Mobarhan
- Department of New Science and Technologies, Cardiovascular Research Center, Biochemistry of Nutrition Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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Xin G, Yang G, Hui L. Study to assess whether waist circumference and changes in serum glucose and lipid profile are independent variables for the CETP gene. Diabetes Res Clin Pract 2014; 106:95-100. [PMID: 25115339 DOI: 10.1016/j.diabres.2014.07.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 05/02/2014] [Accepted: 07/20/2014] [Indexed: 11/22/2022]
Abstract
AIMS To observe the relationship among genes, obesity and the changes in serum glucose and lipid profile to assess whether obesity-related disease results from genes and/or obesity. METHODS Correlations among serum glucose, lipids, waist circumference (WC), and Taq1B, I405V, and D442G polymorphisms of the cholesteryl ester transfer protein (CETP) gene were assessed. Logistic regression analysis was used to screen independent variables among obesity-related anthropometric indexes and serum biochemical indicators for genes. RESULTS The waist circumference density index (WCDI) may be attributed to changes in serum biochemical indicators and among WCDI, BMI and serum biochemical indicators, however, only WCDI was an independent variable for the G allele. Differences were observed in anthropometric indexes and serum biochemical indicators between subjects with the G allele and those without (p<0.05). CONCLUSION Abdominal obesity and changes in serum glucose and lipid profile are affected by a group of genes, including CETP. Correlation of the CETP gene with waist circumference may be independent compared with serum glucose and lipid profile.
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Affiliation(s)
- Ge Xin
- College of Medical Laboratory, Dalian Medical University, Dalian 116044, China
| | - Gao Yang
- Dalian Tuberculosis Hospital, China
| | - Liu Hui
- College of Medical Laboratory, Dalian Medical University, Dalian 116044, China.
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29
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Christou GA, Tellis KC, Elisaf MC, Tselepis AD, Kiortsis DN. High density lipoprotein is positively correlated with the changes in circulating total adiponectin and high molecular weight adiponectin during dietary and fenofibrate treatment. J Lipid Res 2013; 54:232-7. [PMID: 22801564 DOI: 10.1194/jlr.m029934] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE The investigation of the relationship between high density lipoprotein (HDL) and adiponectin. DESIGN Thirty-seven obese or overweight [body mass index ≥27 Kg/m(2)], hypertriglyceridemic patients underwent one of the following interventions for 3 months: 1) Low-calorie diet (n=19), 2) Low-calorie diet plus fenofibrate (n=18). RESULTS Circulating total adiponectin did not change significantly in the low-calorie diet group. However, in the subgroup of patients whose high density lipoprotein cholesterol (HDL-C) decreased over the first month of diet, a statistically significant reduction of the circulating total adiponectin was observed (p=0.010), while in the subgroup of patients whose HDL-C increased over the latter 2 months of the diet, an increase in circulating total adiponectin over the 2 months was found (p=0.043). The percentage change of HDL-C over the first month of diet was positively correlated with the percentage change of circulating total adiponectin (r=0.579, p=0.019). The percentage change of HDL-C over the 3 months of diet was positively correlated with the percentage changes of circulating total adiponectin (r=0.527, p=0.030) and high molecular weight (HMW) adiponectin (r=0.524, p=0.031). The change in circulating total adiponectin over the first month of diet was positively correlated with the HDL-C at 1 month (r=0.606, p=0.013). The change in HMW adiponectin over the 3 months of diet was positively correlated with the HDL-C at 3 months (r=0.602, p=0.011). The percentage change of circulating HMW adiponectin over the first month of fenofibrate treatment was positively correlated with the percentage change of HDL-C (r=0.594, p=0.012). CONCLUSIONS HDL is positively correlated with the changes in circulating adiponectin during dietary and fenofibrate treatment.
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Affiliation(s)
- Georgios A Christou
- Laboratory of Physiology, Medical School, University of Ioannina, Ioannina, Greece
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Endogenous CETP activity as a predictor of cardiovascular risk: Determination of the optimal range. Atherosclerosis 2013; 227:165-71. [DOI: 10.1016/j.atherosclerosis.2012.12.024] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 12/04/2012] [Accepted: 12/17/2012] [Indexed: 11/23/2022]
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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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Perelas A, Safarika V, Vlachos IS, Tzanetakou I, Korou LM, Konstantopoulos P, Doulamis I, Ioannidis I, Kornezos I, Gargas D, Klonaris C, Perrea DN, Chatziioannou A. Correlation between mesenteric fat thickness and serum apolipoproteins in patients with peripheral arterial occlusive disease. Lipids Health Dis 2012; 11:125. [PMID: 23025515 PMCID: PMC3477087 DOI: 10.1186/1476-511x-11-125] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Accepted: 09/14/2012] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Visceral fat possesses the most detrimental potential for cardiovascular morbidity through the release of adipokines, as well as metabolic and proinflammatory mediators, which adversely affect metabolic and vascular homeostasis. Among the different types of visceral adipose tissue, mesenteric fat is considered particularly detrimental, due to its close proximity to the portal circulation, affecting directly the liver, which is the main regulator of body metabolic homeostasis. Mesenteric fat can be reliably estimated using abdominal ultrasonography, the only available imaging method able to depict individual mesenteric leaves. Aim of the present study was to investigate the correlation of mesenteric fat thickness (MFT) with serum apolipoprotein levels in patients undergoing digital subtraction angiography in a single center. METHODS 35 male patients with peripheral arterial disease were examined. After careful examination of the periumbilical area, the mesenteric leaves were identified. The maximal distance between each pair of sequential leaves was measured, and the mean value of the three thickest leaves was determined as the mesenteric fat thickness. Six apolipoprotein fasting serum concentrations were measured using a Luminex proteomics platform (xMAP Multiplex immunoassay): apolipoprotein A-I (apoAI), apolipoprotein A-II (apoAII), apolipoprotein B (apoB), apolipoprotein C-II (apoCII), apolipoprotein C-III (apoCIII) and apolipoprotein E (apoE). RESULTS MFT correlated with apoAII and apoB serum concentrations. The correlations with apoAII and apoB remained significant following correction for BMI. No correlations were noted between MFT and serum apoAI, apoCII, apoCIII or apoE levels before or after adjustment for BMI. CONCLUSIONS Our study indicates that MFT is significantly correlated with the concentration of atherogenic low density lipoproteins particles, as well as with apoAII, a determinant of free fatty acids levels. No correlation was observed between mesenteric fat thickness and very low density lipoprotein or chylomicron particles concentration.
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Affiliation(s)
- Apostolos Perelas
- Laboratory for Experimental Surgery and Surgical Research "N,S, Christeas", University of Athens Medical School, 15b Agiou Thoma Street, Goudi, Athens 11527, Greece.
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Al-Zoairy R, Melmer A, Ress C, Laimer M, Kaser S, Ebenbichler C. Lipid profile changes after pronounced weight loss induced by bariatric surgery. ACTA ACUST UNITED AC 2012. [DOI: 10.2217/clp.12.9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Martinez MN, Emfinger CH, Overton M, Hill S, Ramaswamy TS, Cappel DA, Wu K, Fazio S, McDonald WH, Hachey DL, Tabb DL, Stafford JM. Obesity and altered glucose metabolism impact HDL composition in CETP transgenic mice: a role for ovarian hormones. J Lipid Res 2012; 53:379-389. [PMID: 22215797 PMCID: PMC3276461 DOI: 10.1194/jlr.m019752] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 12/15/2011] [Indexed: 01/03/2023] Open
Abstract
Mechanisms underlying changes in HDL composition caused by obesity are poorly defined, partly because mice lack expression of cholesteryl ester transfer protein (CETP), which shuttles triglyceride and cholesteryl ester between lipoproteins. Because menopause is associated with weight gain, altered glucose metabolism, and changes in HDL, we tested the effect of feeding a high-fat diet (HFD) and ovariectomy (OVX) on glucose metabolism and HDL composition in CETP transgenic mice. After OVX, female CETP-expressing mice had accelerated weight gain with HFD-feeding and impaired glucose tolerance by hyperglycemic clamp techniques, compared with OVX mice fed a low-fat diet (LFD). Sham-operated mice (SHAM) did not show HFD-induced weight gain and had less glucose intolerance than OVX mice. Using shotgun HDL proteomics, HFD-feeding in OVX mice had a large effect on HDL composition, including increased levels of apoA2, apoA4, apoC2, and apoC3, proteins involved in TG metabolism. These changes were associated with decreased hepatic expression of SR-B1, ABCA1, and LDL receptor, proteins involved in modulating the lipid content of HDL. In SHAM mice, there were minimal changes in HDL composition with HFD feeding. These studies suggest that the absence of ovarian hormones negatively influences the response to high-fat feeding in terms of glucose tolerance and HDL composition. CETP-expressing mice may represent a useful model to define how metabolic changes affect HDL composition and function.
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Affiliation(s)
| | | | - Matthew Overton
- Department of Molecular Physiology & Biophysics; University of North Carolina, Chapel Hill
| | | | | | | | - Ke Wu
- Division of Diabetes, Endocrinology, & Metabolism; Wuhan University
| | - Sergio Fazio
- Atherosclerosis Research Unit, Division of Cardiovascular Medicine
| | - W Hayes McDonald
- Mass Spectroscopy Research Center Vanderbilt University School of Medicine
| | - David L Hachey
- Mass Spectroscopy Research Center Vanderbilt University School of Medicine
| | | | - John M Stafford
- Department of Molecular Physiology & Biophysics; Tennessee Valley Healthcare System; Division of Diabetes, Endocrinology, & Metabolism.
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Angel-Chávez LI, Tene-Pérez CE, Castro E. Leptin receptor gene K656N polymorphism is associated with low body fat levels and elevated high-density cholesterol levels in Mexican children and adolescents. Endocr Res 2012; 37:124-34. [PMID: 22746211 DOI: 10.3109/07435800.2011.648360] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION This study evaluated the association between obesity and the K109R, Q223R, and K656N polymorphisms of the leptin receptor (LEPR) locus. Such polymorphisms cause changes in the extracellular extreme of the LEPR gene product and appear to be related to signal transduction toward the cell. SUBJECTS AND METHODS A total of 128 participants between 6 and 17 years of age from a Mexican Mestizo population were included in the study. Individuals were classified as overweight-obese (n = 76) and normal (n = 52), based on anthropomorphic measurements. The K109R, Q223R, and K656N polymorphisms of the LEPR were determined by the size of restriction fragments obtained from polymorphic fragment amplification (polymerase chain reaction-restriction fragment length polymorphism) obtained from genomic DNA. Allele frequency was compared using the chi-square test. Odds ratio was calculated to determine allele obesity risk factor. RESULTS Variant allele frequency was 109R = 0.35, 223R = 0.49, and 656N = 0.11 for the K109R, Q223R, and K656N polymorphisms, respectively. No statistically significant association with obesity was found in any of the alleles. The N allele of the K656N polymorphism was associated with nonobesity markers, such as high concentrations of high-density lipoproteins, normal body mass index, less thickness of skinfolds, and body perimeters. None of the alleles studied were shown to be obesity risk factors. CONCLUSIONS Our results suggest that there is no association between the K109R, Q223R, and K656N polymorphisms of the LEPR gene with obesity, and none of the alleles of the LEPR gene K109R, Q223R, and K656N polymorphisms are an obesity risk factor.
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Abstract
Dyslipidemia associated with obesity and the metabolic syndrome is one of the central features contributing to the increased CV risk in these patients. In view of the pandemic of the metabolic syndrome, it is imperative to fully understand the mechanisms leading to the metabolic lipid phenotype before embarking upon optimal treatment strategies. The traditional concept that insulin resistance causes increased FFA flux via increased TG hydrolysis in adipose tissue is still of a central theme in the general hypothesis. The combination of increased hepatic VLDL secretion with impaired LPL-mediated TG clearance explains the hypertriglyceridemia phenotype of the metabolic syndrome. Hence, central IR may be an important factor contributing to peripheral hypertriglyceridemia. Recently recognized regulatory systems include the profound impact of the hypothalamus on TG secretion and glucose control. In addition, dysfunctional (or inflamed) intra abdominal adipose tissue has emerged as a potent regulator of dyslipidemia and IR. It will be a challenge to design novel treatment modalities that target “dysfunctional” fat or central IR to attempt to prevent the epidemic of CV disease secondary to the metabolic syndrome.
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Affiliation(s)
- Remco Franssen
- Department of Vascular Medicine, Academic Medical Center, Meibergdreef 9, Room F4-159.2, 1105 AZ, Amsterdam, The Netherlands
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Povel CM, Boer JMA, Imholz S, Dollé MET, Feskens EJM. Genetic variants in lipid metabolism are independently associated with multiple features of the metabolic syndrome. Lipids Health Dis 2011; 10:118. [PMID: 21767357 PMCID: PMC3156750 DOI: 10.1186/1476-511x-10-118] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Accepted: 07/18/2011] [Indexed: 12/05/2022] Open
Abstract
Background Our objective was to find single nucleotide polymorphisms (SNPs), within transcriptional pathways of glucose and lipid metabolism, which are related to multiple features of the metabolic syndrome (MetS). Methods 373 SNPs were measured in 3575 subjects of the Doetinchem cohort. Prevalence of MetS features, i.e. hyperglycemia, abdominal obesity, decreased HDL-cholesterol levels and hypertension, were measured twice in 6 years. Associations between the SNPs and the individual MetS features were analyzed by log-linear models. For SNPs related to multiple MetS features (P < 0.01), we investigated whether these associations were independent of each other. Results Two SNPs, CETP Ile405Val and APOE Cys112Arg, were associated with both the prevalence of low HDL-cholesterol level (Ile405Val P = < .0001; Cys112Arg P = 0.001) and with the prevalence of abdominal obesity (Ile405Val P = 0.007; Cys112Arg P = 0.007). For both SNPs, the association with HDL-cholesterol was partly independent of the association with abdominal obesity and vice versa. Conclusion Two SNPs, mainly known for their role in lipid metabolism, were associated with two MetS features i.e., low HDL-cholesterol concentration, as well as, independent of this association, abdominal obesity. These SNPs may help to explain why low HDL-cholesterol levels and abdominal obesity frequently co-occur.
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Affiliation(s)
- Cécile M Povel
- Centre for Nutrition and Health, National Institute for Public Health and the Environment, Bilthoven, the Netherlands.
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Athyros VG, Tziomalos K, Karagiannis A, Mikhailidis DP. Dyslipidaemia of obesity, metabolic syndrome and type 2 diabetes mellitus: the case for residual risk reduction after statin treatment. Open Cardiovasc Med J 2011; 5:24-34. [PMID: 21660248 PMCID: PMC3109607 DOI: 10.2174/1874192401105010024] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 01/03/2011] [Accepted: 01/06/2011] [Indexed: 12/21/2022] Open
Abstract
Dyslipidaemia is frequently present in obesity, metabolic syndrome (MetS) and type 2 diabetes mellitus (T2DM). The predominant features of dyslipidaemia in these disorders include increased flux of free fatty acids (FFA), raised triglyceride (TG) and low high density lipoprotein cholesterol (HDL-C) levels, a predominance of small, dense (atherogenic) low density lipoprotein cholesterol (LDL) particles and raised apolipoprotein (apo) B values Posprandial hyperlipidaemia may also be present. Insulin resistance (IR) appears to play an important role in the pathogenesis of dyslipidaemia in obesity, MetS and T2DM. The cornerstone of treatment of this IR-related dyslipidaemia is lifestyle changes and in diabetic patients, tight glycaemic control. In addition to these measures, recent clinical trials showed benefit with statin treatment. Nevertheless, a substantial percentage of patients treated with statins still experience vascular events. This residual vascular risk needs to be addressed. This review summarizes the effects of hypolipidaemic drug combinations (including statins with cholesterol ester protein inhibitors, niacin, fibrates or fish oil, as well as fibrate-ezetimibe combination) on the residual vascular risk in patients with obesity, MetS or T2DM.
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Affiliation(s)
- Vasilios G Athyros
- Second Propedeutic Department of Internal Medicine, Aristotle University, Hippocration Hospital, Thessaloniki, Greece
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Impact of Unhealthy Lifestyle Behaviors and Obesity on Cholesteryl Ester Transfer Protein Among Adolescent Males. Arch Med Res 2011; 42:53-9. [DOI: 10.1016/j.arcmed.2010.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Ruan X, Ma L, Wang S, Lindpaintner K, Liu X, Wang B, Peng Z, Ma X, Cheng M, Zhang J, Liu L, Wang X. TAQIB and I405V polymorphisms of CETP are moderately associated with obesity risk in the Chinese adult population. Acta Diabetol 2010; 47:217-24. [PMID: 19360375 DOI: 10.1007/s00592-009-0117-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2008] [Accepted: 03/24/2009] [Indexed: 10/20/2022]
Abstract
Associations between the TAQIB and I405V polymorphisms and obesity risk were studied for a single locus as well as in combination. A total of 934 obese subjects and 924 normal controls were included in the study. TAQIB was associated with high-density lipoprotein (HDL) levels (P < 0.001), while I405V was associated with levels of low-density lipoprotein (P = 0.03) and total cholesterol (P = 0.007). Less common alleles of TAQIB and I405V were associated with decreased obesity risk and further drops in odds ratio (OR) were observed in carriers with rare homozygous alleles on both loci (OR = 0.659, P = 0.02). The TAQIB B2 allele was associated with reductions in both hip circumference (P = 0.034) and triceps skinfold thickness (TST) (P = 0.045), although this effect was completely abolished after controlling for HDL levels. The 405V variant was associated with reductions in hip circumference (P = 0.031), body fat composition (P = 0.039) and TST (P = 0.036); these effects were weakened (P < 0.1) after controlling for HDL levels. In conclusion, less common alleles of TAQIB and I405V appear to be modestly associated with obesity risk in an adult Chinese population. Adjustments for HDL levels completely (TAQIB) or partially (I405V) abolished the observed association.
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Perez-Tilve D, Hofmann SM, Basford J, Nogueiras R, Pfluger PT, Patterson JT, Grant E, Wilson-Perez HE, Granholm NA, Arnold M, Trevaskis JL, Butler AA, Davidson WS, Woods SC, Benoit SC, Sleeman MW, DiMarchi RD, Hui DY, Tschöp MH. Melanocortin signaling in the CNS directly regulates circulating cholesterol. Nat Neurosci 2010; 13:877-82. [PMID: 20526334 DOI: 10.1038/nn.2569] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2010] [Accepted: 04/28/2010] [Indexed: 01/02/2023]
Abstract
Cholesterol circulates in the blood in association with triglycerides and other lipids, and elevated blood low-density lipoprotein cholesterol carries a risk for metabolic and cardiovascular disorders, whereas high-density lipoprotein (HDL) cholesterol in the blood is thought to be beneficial. Circulating cholesterol is the balance among dietary cholesterol absorption, hepatic synthesis and secretion, and the metabolism of lipoproteins by various tissues. We found that the CNS is also an important regulator of cholesterol in rodents. Inhibiting the brain's melanocortin system by pharmacological, genetic or endocrine mechanisms increased circulating HDL cholesterol by reducing its uptake by the liver independent of food intake or body weight. Our data suggest that a neural circuit in the brain is directly involved in the control of cholesterol metabolism by the liver.
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Affiliation(s)
- Diego Perez-Tilve
- Metabolic Diseases Institute, Division of Endocrinology, Department of Medicine, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Mazzucco S, Agostini F, Mangogna A, Cattin L, Biolo G. Prolonged inactivity up-regulates cholesteryl ester transfer protein independently of body fat changes in humans. J Clin Endocrinol Metab 2010; 95:2508-12. [PMID: 20228163 DOI: 10.1210/jc.2009-2561] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
CONTEXT Physical inactivity is associated with insulin resistance and decreased high-density lipoprotein (HDL) cholesterol. Cholesteryl ester transfer protein (CETP) is involved in cholesterol metabolism, being responsible for the transfer of cholesteryl esters from HDL to very low- and low-density lipoproteins. OBJECTIVE We hypothesized that physical inactivity could decrease HDL cholesterol through changes in CETP availability. DESIGN AND PARTICIPANTS Twenty-four healthy, male volunteers (aged 23.1 +/- 0.5 yr) were investigated in eucaloric conditions before and at the end of 35 d of experimental bed rest. MEASURES Changes in body composition were monitored by bioimpedance throughout the study. Before and at the end of the experimental period, plasma insulin and glucose and plasma lipid pattern as well as CETP concentrations were determined. RESULTS Our results demonstrated that during bed rest, fat mass did not change significantly, whereas fat-free mass decreased by 3.9 +/- 0.4% (P < 0.01). The homeostatic model assessment index of insulin resistance significantly (P < 0.001) increased by 47 +/- 11% after bed rest. Bed rest decreased HDL cholesterol by 12 +/- 3% (P < 0.05), increased triglycerides by 51 +/- 10% (P < 0.05), whereas it did not change significantly low-density lipoprotein cholesterol. Plasma CETP concentration increased after bed rest by 27 +/- 9% (P < 0.01). Bed rest-induced changes in CETP concentrations inversely correlated with changes in the ratio between HDL and non-HDL cholesterol (n = 24; R = -0.43; P < 0.05). CONCLUSIONS Physical inactivity decreases HDL cholesterol, at least in part, through CETP up-regulation.
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Affiliation(s)
- Sara Mazzucco
- Department of Medical, Technological, and Translational Science, Division of Internal Medicine, University of Trieste, 34139 Trieste, Italy
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Impact of android overweight or obesity and insulin resistance on basal and postprandial SR-BI and ABCA1-mediated serum cholesterol efflux capacities. Atherosclerosis 2010; 209:422-9. [DOI: 10.1016/j.atherosclerosis.2009.09.025] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2009] [Revised: 09/17/2009] [Accepted: 09/18/2009] [Indexed: 10/20/2022]
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High density lipoprotein inhibits the activation of sterol regulatory element-binding protein-1 in cultured cells. FEBS Lett 2010; 584:1217-22. [PMID: 20171215 DOI: 10.1016/j.febslet.2010.02.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Revised: 02/02/2010] [Accepted: 02/12/2010] [Indexed: 11/21/2022]
Abstract
A link between cellular uptake of high density lipoprotein (HDL) and regulation of sterol regulatory element-binding protein-1 (SREBP-1) was investigated in vitro. HDL decreased nuclear SREBP-1 levels as well as SREBP-1 target gene expression in HepG2 and HEK293 cells. However, HDL did not repress an exogenously expressed, constitutively active form of SREBP-1. HDL increased cellular cholesterol levels, and cellular cholesterol depletion by methyl-beta-cyclodextrin abolished the effects of HDL. These results suggest that HDL inhibits the activation of SREBP-1 through a cholesterol-dependent mechanism, which may play an important role in regulating lipid synthetic pathways mediated by SREBP-1.
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Kolovou G, Stamatelatou M, Anagnostopoulou K, Kostakou P, Kolovou V, Mihas C, Vasiliadis I, Diakoumakou O, Mikhailidis DP, Cokkinos DV. Cholesteryl ester transfer protein gene polymorphisms and longevity syndrome. Open Cardiovasc Med J 2010; 4:14-9. [PMID: 20200605 PMCID: PMC2831192 DOI: 10.2174/1874192401004010014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2009] [Revised: 12/25/2009] [Accepted: 12/28/2009] [Indexed: 01/20/2023] Open
Abstract
Purpose: High levels of high density lipoprotein (HDL) cholesterol are associated with a decreased risk of coronary heart disease (CHD). Subjects with high levels of HDL cholesterol (>70 mg/dl; 1.79 mmol/l) as well as high levels of low density lipoprotein (LDL) cholesterol, could represent a group with longevity syndrome (LS). Since HDL particles are influenced by cholesteryl ester transfer protein (CETP) activity, it is worth studying the CETP polymorphism. The aim of the study was to detect whether 2 genetic variants of the CETP are associated with the LS. Subjects and Methods: The study population consisted of 136 unrelated men and women with no personal and family history of CHD; 69 met the criteria for LS and 67 did not meet these criteria and had “normal” HDL cholesterol (>40 and <70 mg/dl; >1.03 and <1.79 mmol/l). All patients were genotyped for the TaqIB and I405V polymorphisms. Results: The B2 allele frequency of TaqIB polymorphism was higher in the LS in comparison with the non-LS group (p=0.03) whereas B1 allele frequency was higher in the non-LS group (p=0.03). Conclusions: Gene polymorphisms could help decide whether individuals who have increased levels of both LDL cholesterol and HDL cholesterol require treatment. Some of the prerequisites could include that subjects with LS should not only have very high levels of HDL cholesterol but also favorable gene polymorphisms. However, further investigations with a larger sample and including other gene polymorphisms, are needed.
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Affiliation(s)
- Genovefa Kolovou
- 1st Cardiology Department, Onassis Cardiac Surgery Center Athens, Greece
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Ruan X, Ma L, Wang S, Lindpaintner K, Liu X, Wang B, Peng Z, Ma X, Cheng M, Zhang J, Liu L, Wang X. Association of two CETP polymorphisms with HDL levels in the Chinese obese population. Obesity (Silver Spring) 2009; 17:2196-201. [PMID: 19444232 DOI: 10.1038/oby.2009.138] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
The association of two cholesterol ester transfer protein (CETP) polymorphisms, D442G and TAQIB (B1-->B2), with high-density lipoprotein (HDL) levels in 932 Chinese obese individuals (BMI >or= 27) was investigated in comparison with normal controls (BMI <or= 24). Independent association was demonstrated for TAQIB minor allele B2 and CETP442 minor allele G with elevated HDL levels. The CETP D442G polymorphism was associated with a much greater increase in HDL levels in subjects with BMI exceeding 27 kg/m(2) (+5.42 mg/dl, P = 0.0007) compared to normal controls (+1.97 mg/dl, P = 0.275), and the increase in HDL reached the highest level among subjects with BMI exceeding 30 kg/m(2) (+6.80 mg/dl, P = 0.016). TAQIB showed significant association with HDL levels only in normal BMI subgroup (P = 0.0017). TAQIB significantly interacted with serum triglyceride (TG) on modulating HDL levels (P = 0.027). The TAQIB-TG interaction effect remained marginally significant after controlling for BMI (P = 0.057). We conclude that D442G polymorphism is associated with more HDL elevation in obesity. TAQIB interacts with serum TG on modulating HDL levels, and the interaction is partly independent of BMI.
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Affiliation(s)
- Xiaoyang Ruan
- Laboratory of Human Genetics, Beijing Hypertension League Institute, Beijing, China
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Kaestner S, Patsouras N, Spathas DH, Flordellis CS, Manolis AS. Lack of association between the cholesteryl ester transfer protein gene--TaqIB polymorphism and coronary restenosis following percutaneous transluminal coronary angioplasty and stenting: a pilot study. Angiology 2009; 61:338-43. [PMID: 19815603 DOI: 10.1177/0003319709348297] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND The most widely studied variation at the cholesteryl ester transfer protein (CETP) gene locus is a silent base change called the Thermobius aquaticus IB (TaqIB) polymorphism. TaqIB has been shown to affect levels/activity of CETP, plasma levels of high-density lipoprotein cholesterol (HDL-C), and to contribute to the risk of developing atherosclerosis and coronary heart disease (CHD). Ongoing studies are investigating possible associations between CETP gene polymorphisms and the development of coronary restenosis following percutaneous transluminal coronary angioplasty (PTCA) and stenting. METHODS AND RESULTS The primary objective of the present study was to investigate the frequency of TaqIB-polymorphism, and a possible association with post-PTCA coronary restenosis, in 204 Greek patients who had undergone PTCA and stenting. As a secondary objective, the analysis was extended to explore possible interacting or additive effects by various CHD risk factors, and a deletion in the alpha(2B)-adrenergic receptor gene. The frequency of TaqIB was 54%, similar to the frequency of the polymorphism in a group of 35 healthy controls. CONCLUSIONS The results from this study do not indicate that the TaqIB variation at the CETP gene locus is a significant predictor for assessing the risk of developing coronary restenosis following PTCA and stenting. This result was not affected when considering any one of the additionally studied factors.
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Affiliation(s)
- Sabine Kaestner
- Department of Pharmacology, Patras University School of Medicine, Rio, Patras, Greece
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Laimer MW, Engl J, Tschoner A, Kaser S, Ritsch A, Tatarczyk T, Rauchenzauner M, Weiss H, Aigner F, Patsch JR, Ebenbichler CF. Effects of Weight Loss on Lipid Transfer Proteins in Morbidly Obese Women. Lipids 2009; 44:1125-30. [DOI: 10.1007/s11745-009-3349-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2009] [Accepted: 09/10/2009] [Indexed: 11/28/2022]
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Magkos F, Mohammed BS, Mittendorfer B. Plasma lipid transfer enzymes in non-diabetic lean and obese men and women. Lipids 2009; 44:459-64. [PMID: 19198915 DOI: 10.1007/s11745-009-3285-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2008] [Accepted: 01/13/2009] [Indexed: 11/24/2022]
Abstract
There are considerable differences in the plasma lipid profile between lean and obese individuals and between men and women. Little, however, is known regarding the effects of obesity and sex on the plasma concentration of enzymes involved in intravascular lipid remodeling. Therefore, we measured the immunoreactive protein mass of lipoprotein lipase (LPL), hepatic lipase (HL), cholesterol-ester transfer protein (CETP) and lecithin-cholesterol acyl transferase (LCAT) in fasting plasma samples from 40 lean and 40 obese non-diabetic men and premenopausal women. Women, compared with men, had approximately 5% lower plasma LCAT (p < 0.041), approximately 35% greater LPL (p = 0.001) and approximately 10% greater CETP (p = 0.085) concentrations. Obese, compared with lean individuals of both sexes, had approximately 30% greater plasma LCAT (p < 0.001), approximately 20% greater CETP (p < 0.001) and approximately 20% greater LPL (p = 0.071) concentrations. Plasma HL concentration was not different in lean men and women. Obesity was associated with increased (by approximately 50%) plasma HL concentration in men (p = 0.018) but not in women; consequently, plasma HL concentration was lower in obese women than obese men (p = 0.009). In addition, there were direct correlations between plasma lipid transfer enzyme concentrations and lipoprotein particle concentrations and sizes. There are considerable differences in basal plasma lipid transfer enzyme concentrations between lean and obese subjects and between men and women, which may be partly responsible for respective differences in the plasma lipid profile.
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Affiliation(s)
- Faidon Magkos
- Center for Human Nutrition, Washington University School of Medicine, St. Louis, MO 63110, USA
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50
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Hajer GR, Dallinga-Thie GM, van Vark-van der Zee LC, Olijhoek JK, Visseren FLJ. Lipid-lowering therapy does not affect the postprandial drop in high density lipoprotein-cholesterol (HDL-c) plasma levels in obese men with metabolic syndrome: a randomized double blind crossover trial. Clin Endocrinol (Oxf) 2008; 69:870-7. [PMID: 18394022 DOI: 10.1111/j.1365-2265.2008.03250.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
INTRODUCTION The postprandial lipid metabolism in metabolic syndrome patients is disturbed and may add to the increased cardiovascular risk in these patients. It is not known whether postprandial high density lipoprotein-cholesterol (HDL-c) metabolism is also affected and whether this can be influenced by statin and/or ezetimibe treatment. METHODS Prospective, randomized, double blind, crossover trial comparing simvastatin 80 mg with simvastatin/ezetimibe 10 mg/10 mg treatment for 6 weeks on postprandial HDL-c metabolism in 15, nonsmoking, male, obese metabolic syndrome patients (Adult Treatment Panel III, ATPIII). Only study medication was allowed. HDL-c concentrations, cholesteryl ester transfer (CET), CET protein (CETP) mass and adiponectin were measured before and after oral fat loading. ClinicalTrials.gov NCT00189085. RESULTS Plasma HDL-c levels remained stable during continuous fasting following an overnight fast. Pre-fat load HDL-c concentrations without treatment, after simvastatin and simvastatin/ezetimibe treatment were 1.15 +/- 0.04, 1.16 +/- 0.05 and 1.11 +/- 0.04 mmol/l. Fat load induced a 11% drop in HDL-c plasma levels; 1.02 +/- 0.05 mmol/l (P < 0.001) which was not affected by either therapy. Triglyceride levels during fat load were similar after both treatments. Total CET increased from 9.73 +/- 0.70 to 12.20 +/- 0.67 nmol/ml/h (P = 0.004). Four hours after fat loading CETP mass was increased while adiponectin levels were decreased, irrespective of treatment. DISCUSSION HDL-c levels decrease as CET increases after fat loading in obese metabolic syndrome patients. This is not influenced by either simvastatin or simvastatin/ezetimibe treatment. After fat loading, CETP mass and CET increased, and adiponectin decreased pointing towards a potential role for intra-abdominal fat. Decreased postprandial HDL-c levels may contribute to the increased cardiovascular risk in metabolic syndrome patients on top of already low HDL-c levels.
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Affiliation(s)
- Gideon R Hajer
- Department of Vascular Medicine, University Medical Center Utrecht, Utrecht, the Netherlands
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