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Hulett NA, Knaub LA, Hull SE, Pott GB, Peelor R, Miller BF, Shankar K, Rudolph MC, Reusch JEB, Scalzo RL. Sex Differences in the Skeletal Muscle Response to a High Fat, High Sucrose Diet in Rats. Nutrients 2023; 15:4438. [PMID: 37892512 PMCID: PMC10610114 DOI: 10.3390/nu15204438] [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] [Received: 09/08/2023] [Revised: 09/28/2023] [Accepted: 10/15/2023] [Indexed: 10/29/2023] Open
Abstract
Men are diagnosed with type 2 diabetes at lower body mass indexes than women; the role of skeletal muscle in this sex difference is poorly understood. Type 2 diabetes impacts skeletal muscle, particularly in females who demonstrate a lower oxidative capacity compared to males. To address mechanistic differences underlying this sex disparity, we investigated skeletal muscle mitochondrial respiration in female and male rats in response to chronic high-fat, high-sugar (HFHS) diet consumption. Four-week-old Wistar Rats were fed a standard chow or HFHS diet for 14 weeks to identify sex-specific adaptations in mitochondrial respirometry and characteristics, transcriptional patterns, and protein profiles. Fat mass was greater with the HFHS diet in both sexes when controlled for body mass (p < 0.0001). Blood glucose and insulin resistance were greater in males (p = 0.01) and HFHS-fed rats (p < 0.001). HFHS-fed males had higher mitochondrial respiration compared with females (p < 0.01 sex/diet interaction). No evidence of a difference by sex or diet was found for mitochondrial synthesis, dynamics, or quality to support the mitochondrial respiration sex/diet interaction. However, transcriptomic analyses indicate sex differences in nutrient handling. Sex-specific differences occurred in PI3K/AKT signaling, PPARα/RXRα, and triacylglycerol degradation. These findings may provide insight into the clinical sex differences in body mass index threshold for diabetes development and tissue-specific progression of insulin resistance.
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Affiliation(s)
- Nicholas A. Hulett
- Division of Endocrinology, Department of Medicine, University of Colorado School of Medicine (UCSOM), Aurora, CO 80045, USA; (N.A.H.); (J.E.B.R.)
| | - Leslie A. Knaub
- Division of Endocrinology, Department of Medicine, University of Colorado School of Medicine (UCSOM), Aurora, CO 80045, USA; (N.A.H.); (J.E.B.R.)
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO 80045, USA
| | - Sara E. Hull
- Division of Endocrinology, Department of Medicine, University of Colorado School of Medicine (UCSOM), Aurora, CO 80045, USA; (N.A.H.); (J.E.B.R.)
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO 80045, USA
| | - Gregory B. Pott
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO 80045, USA
| | - Rick Peelor
- Aging & Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA (B.F.M.)
- Oklahoma City Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Benjamin F. Miller
- Aging & Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK 73104, USA (B.F.M.)
- Oklahoma City Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Kartik Shankar
- Department of Pediatrics, Section of Nutrition, University of Colorado School of Medicine (UCSOM), Anschutz Medical Campus, Aurora, CO 80045, USA;
| | - Michael C. Rudolph
- Department of Physiology, Harold Hamm Diabetes Center, Oklahoma University Health Sciences Center, Oklahoma City, OK 73104, USA;
| | - Jane E. B. Reusch
- Division of Endocrinology, Department of Medicine, University of Colorado School of Medicine (UCSOM), Aurora, CO 80045, USA; (N.A.H.); (J.E.B.R.)
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO 80045, USA
- Ludeman Family Center for Women’s Health Research, Department of Medicine, University of Colorado School of Medicine (UCSOM), Aurora, CO 80045, USA
| | - Rebecca L. Scalzo
- Division of Endocrinology, Department of Medicine, University of Colorado School of Medicine (UCSOM), Aurora, CO 80045, USA; (N.A.H.); (J.E.B.R.)
- Rocky Mountain Regional Veterans Affairs Medical Center, Aurora, CO 80045, USA
- Ludeman Family Center for Women’s Health Research, Department of Medicine, University of Colorado School of Medicine (UCSOM), Aurora, CO 80045, USA
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Mocciaro G, D’Amore S, Jenkins B, Kay R, Murgia A, Herrera-Marcos LV, Neun S, Sowton AP, Hall Z, Palma-Duran SA, Palasciano G, Reimann F, Murray A, Suppressa P, Sabbà C, Moschetta A, Koulman A, Griffin JL, Vacca M. Lipidomic Approaches to Study HDL Metabolism in Patients with Central Obesity Diagnosed with Metabolic Syndrome. Int J Mol Sci 2022; 23:6786. [PMID: 35743227 PMCID: PMC9223701 DOI: 10.3390/ijms23126786] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 06/10/2022] [Accepted: 06/13/2022] [Indexed: 12/12/2022] Open
Abstract
The metabolic syndrome (MetS) is a cluster of cardiovascular risk factors characterised by central obesity, atherogenic dyslipidaemia, and changes in the circulating lipidome; the underlying mechanisms that lead to this lipid remodelling have only been partially elucidated. This study used an integrated "omics" approach (untargeted whole serum lipidomics, targeted proteomics, and lipoprotein lipidomics) to study lipoprotein remodelling and HDL composition in subjects with central obesity diagnosed with MetS (vs. controls). Compared with healthy subjects, MetS patients showed higher free fatty acids, diglycerides, phosphatidylcholines, and triglycerides, particularly those enriched in products of de novo lipogenesis. On the other hand, the "lysophosphatidylcholines to phosphatidylcholines" and "cholesteryl ester to free cholesterol" ratios were reduced, pointing to a lower activity of lecithin cholesterol acyltransferase (LCAT) in MetS; LCAT activity (directly measured and predicted by lipidomic ratios) was positively correlated with high-density lipoprotein cholesterol (HDL-C) and negatively correlated with body mass index (BMI) and insulin resistance. Moreover, many phosphatidylcholines and sphingomyelins were significantly lower in the HDL of MetS patients and strongly correlated with BMI and clinical metabolic parameters. These results suggest that MetS is associated with an impairment of phospholipid metabolism in HDL, partially led by LCAT, and associated with obesity and underlying insulin resistance. This study proposes a candidate strategy to use integrated "omics" approaches to gain mechanistic insights into lipoprotein remodelling, thus deepening the knowledge regarding the molecular basis of the association between MetS and atherosclerosis.
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Affiliation(s)
- Gabriele Mocciaro
- Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, Cambridge CB2 1GA, UK; (G.M.); (A.M.); (S.N.); (Z.H.)
- Department of Interdisciplinary Medicine, Clinica Medica “C. Frugoni”, Aldo Moro University of Bari, 70124 Bari, Italy; (P.S.); (C.S.); (A.M.)
- Roger Williams Institute of Hepatology, Foundation for Liver Research, London SE5 9NT, UK
| | - Simona D’Amore
- Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, UK;
- Clinica Medica “A. Murri”, “Aldo Moro” University of Bari, 70124 Bari, Italy;
| | - Benjamin Jenkins
- Welcome Trust-MRC Institute of Metabolic Science Metabolic Research Laboratories, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 0QQ, UK; (B.J.); (R.K.); (F.R.); (A.K.)
| | - Richard Kay
- Welcome Trust-MRC Institute of Metabolic Science Metabolic Research Laboratories, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 0QQ, UK; (B.J.); (R.K.); (F.R.); (A.K.)
| | - Antonio Murgia
- Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, Cambridge CB2 1GA, UK; (G.M.); (A.M.); (S.N.); (Z.H.)
| | - Luis Vicente Herrera-Marcos
- Department of Biochemistry and Molecular and Cellular Biology, Veterinary Faculty, University of Zaragoza, 50013 Zaragoza, Spain;
| | - Stefanie Neun
- Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, Cambridge CB2 1GA, UK; (G.M.); (A.M.); (S.N.); (Z.H.)
| | - Alice P. Sowton
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK; (A.P.S.); (A.M.)
| | - Zoe Hall
- Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, Cambridge CB2 1GA, UK; (G.M.); (A.M.); (S.N.); (Z.H.)
- Biomolecular Medicine, Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK;
| | - Susana Alejandra Palma-Duran
- Biomolecular Medicine, Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK;
| | - Giuseppe Palasciano
- Clinica Medica “A. Murri”, “Aldo Moro” University of Bari, 70124 Bari, Italy;
| | - Frank Reimann
- Welcome Trust-MRC Institute of Metabolic Science Metabolic Research Laboratories, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 0QQ, UK; (B.J.); (R.K.); (F.R.); (A.K.)
| | - Andrew Murray
- Department of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 3EG, UK; (A.P.S.); (A.M.)
| | - Patrizia Suppressa
- Department of Interdisciplinary Medicine, Clinica Medica “C. Frugoni”, Aldo Moro University of Bari, 70124 Bari, Italy; (P.S.); (C.S.); (A.M.)
| | - Carlo Sabbà
- Department of Interdisciplinary Medicine, Clinica Medica “C. Frugoni”, Aldo Moro University of Bari, 70124 Bari, Italy; (P.S.); (C.S.); (A.M.)
| | - Antonio Moschetta
- Department of Interdisciplinary Medicine, Clinica Medica “C. Frugoni”, Aldo Moro University of Bari, 70124 Bari, Italy; (P.S.); (C.S.); (A.M.)
| | - Albert Koulman
- Welcome Trust-MRC Institute of Metabolic Science Metabolic Research Laboratories, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 0QQ, UK; (B.J.); (R.K.); (F.R.); (A.K.)
| | - Julian L. Griffin
- Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, Cambridge CB2 1GA, UK; (G.M.); (A.M.); (S.N.); (Z.H.)
- Biomolecular Medicine, Division of Systems Medicine, Department of Metabolism, Digestion and Reproduction, Imperial College London, London SW7 2AZ, UK;
- Rowlett Institute, Foresterhill, University of Aberdeen, Aberdeen AB25 2ZD, UK
| | - Michele Vacca
- Department of Biochemistry and Cambridge Systems Biology Centre, University of Cambridge, Cambridge CB2 1GA, UK; (G.M.); (A.M.); (S.N.); (Z.H.)
- Department of Interdisciplinary Medicine, Clinica Medica “C. Frugoni”, Aldo Moro University of Bari, 70124 Bari, Italy; (P.S.); (C.S.); (A.M.)
- Roger Williams Institute of Hepatology, Foundation for Liver Research, London SE5 9NT, UK
- Welcome Trust-MRC Institute of Metabolic Science Metabolic Research Laboratories, Addenbrooke’s Hospital, Hills Road, Cambridge CB2 0QQ, UK; (B.J.); (R.K.); (F.R.); (A.K.)
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3
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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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4
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Goossens GH, Jocken JWE, Blaak EE. Sexual dimorphism in cardiometabolic health: the role of adipose tissue, muscle and liver. Nat Rev Endocrinol 2021; 17:47-66. [PMID: 33173188 DOI: 10.1038/s41574-020-00431-8] [Citation(s) in RCA: 151] [Impact Index Per Article: 50.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/02/2020] [Indexed: 12/11/2022]
Abstract
Obesity is associated with many adverse health effects, such as an increased cardiometabolic risk. Despite higher adiposity for a given BMI, premenopausal women are at lower risk of cardiometabolic disease than men of the same age. This cardiometabolic advantage in women seems to disappear after the menopause or when type 2 diabetes mellitus develops. Sexual dimorphism in substrate supply and utilization, deposition of excess lipids and mobilization of stored lipids in various key metabolic organs (such as adipose tissue, skeletal muscle and the liver) are associated with differences in tissue-specific insulin sensitivity and cardiometabolic risk profiles between men and women. Moreover, lifestyle-related factors and epigenetic and genetic mechanisms seem to affect metabolic complications and disease risk in a sex-specific manner. This Review provides insight into sexual dimorphism in adipose tissue distribution, adipose tissue, skeletal muscle and liver substrate metabolism and tissue-specific insulin sensitivity in humans, as well as the underlying mechanisms, and addresses the effect of these sex differences on cardiometabolic health. Additionally, this Review highlights the implications of sexual dimorphism in the pathophysiology of obesity-related cardiometabolic risk for the development of sex-specific prevention and treatment strategies.
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Affiliation(s)
- Gijs H Goossens
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands.
| | - Johan W E Jocken
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands
| | - Ellen E Blaak
- Department of Human Biology, NUTRIM School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre+, Maastricht, Netherlands.
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5
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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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6
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Gheller BJF, Riddle ES, Lem MR, Thalacker-Mercer AE. Understanding Age-Related Changes in Skeletal Muscle Metabolism: Differences Between Females and Males. Annu Rev Nutr 2017; 36:129-56. [PMID: 27431365 DOI: 10.1146/annurev-nutr-071715-050901] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Skeletal muscle is the largest metabolic organ system in the human body. As such, metabolic dysfunction occurring in skeletal muscle impacts whole-body nutrient homeostasis. Macronutrient metabolism changes within the skeletal muscle with aging, and these changes are associated in part with age-related skeletal muscle remodeling. Moreover, age-related changes in skeletal muscle metabolism are affected differentially between males and females and are likely driven by changes in sex hormones. Intrinsic and extrinsic factors impact observed age-related changes and sex-related differences in skeletal muscle metabolism. Despite some support for sex-specific differences in skeletal muscle metabolism with aging, more research is necessary to identify underlying differences in mechanisms. Understanding sex-specific aging skeletal muscle will assist with the development of therapies to attenuate adverse metabolic and functional outcomes.
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Affiliation(s)
- Brandon J F Gheller
- Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853;
| | - Emily S Riddle
- Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853;
| | - Melinda R Lem
- Division of Nutritional Sciences, Cornell University, Ithaca, New York 14853;
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Miao Z, Wang J, Wang F, Liu L, Ding H, Shi Z. Comparative proteomics of umbilical vein blood plasma from normal and gestational diabetes mellitus patients reveals differentially expressed proteins associated with childhood obesity. Proteomics Clin Appl 2016; 10:1122-1131. [PMID: 27381806 DOI: 10.1002/prca.201600046] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2016] [Revised: 06/11/2016] [Accepted: 06/30/2016] [Indexed: 12/12/2022]
Abstract
PURPOSE Offspring obesity is one of long-term complications of gestational diabetes mellitus (GDM). The aim of this study is to identify proteins differentially expressed in the umbilical vein blood plasma, which could become markers for early diagnosis of childhood obesity. EXPERIMENTAL DESIGN Umbilical vein plasma samples were collected from 30 control and 30 GDM patients in 2007-2008 whose offspring were suffering from obesity at 6-7 years old. Multiplexed isobaric tandem mass tag labeling combined with LC-MS/MS was used to identify differentially expressed proteins. Ingenuity pathway analysis was performed to identify canonical pathways, biological functions, and networks of interacting proteins. Western blotting was used to verify the expression of three selected proteins. RESULTS A total of 318 proteins were identified, of which 12 proteins were upregulated in GDM group while 24 downregulated. Lipid metabolism was the top category identified by ingenuity pathway analysis. Three randomly chosen proteins were validated by Western blotting, which were consistent with LC-MS. CONCLUSION There are significant differences of protein profile in the umbilical vein blood plasma between normal and GDM patients with obese offspring. The results indicate that a variety of proteins and biological mechanisms may contribute to childhood obesity.
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Affiliation(s)
- Zhijing Miao
- State Key Laboratory of Reproductive Medicine, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Jianqing Wang
- Yancheng No. 1 People's Hospital Affiliated to Nantong University, Nantong, China
| | - Fuqiang Wang
- State Key Laboratory of Reproductive Medicine, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Lan Liu
- State Key Laboratory of Reproductive Medicine, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Hongjuan Ding
- State Key Laboratory of Reproductive Medicine, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing, China
| | - Zhonghua Shi
- State Key Laboratory of Reproductive Medicine, Nanjing Maternity and Child Health Care Hospital Affiliated to Nanjing Medical University, Nanjing, China
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Bekhet OH, Zeljkovic A, Vekic J, Paripovic D, Janac J, Joksic J, Gojkovic T, Spasojevic-Kalimanovska V, Peco-Antic A, Milosevski-Lomic G, Jelic-Ivanovic Z. Hypertension, lipoprotein subclasses and lipid transfer proteins in obese children and adolescents. Scand J Clin Lab Invest 2016; 76:472-8. [PMID: 27379467 DOI: 10.1080/00365513.2016.1201849] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
BACKGROUND Obesity-related childhood hypertension is associated with disturbances of serum lipids, but less is known about distribution of lipoprotein subclasses and activities of proteins involved in reverse cholesterol transport in hypertensive obese children. Our objective was to determine low-density lipoprotein (LDL) and high-density lipoprotein (HDL) subclasses distribution and activities of lecithin:cholesterol acyltransferase (LCAT) and cholesteryl ester transfer protein (CETP) in hypertensive and non-hypertensive obese children. METHODS A total of 40 hypertensive and 25 non-hypertensive obese children were enrolled. Lipoprotein subclasses were assessed by polyacrylamide gradient gel electrophoresis. LCAT and CETP activities were determined as a rate of formation and a rate of transfer of cholesteryl esters. RESULTS Despite of comparable values of serum lipid parameters, a shift toward smaller LDL and HDL subclasses was observed in hypertensive compared to normotensive obese children. Activities of LCAT were similar, but proatherogenic CETP activities were significantly higher in the hypertensive group (p = 0.036). LCAT/net CETP ratio inversely correlated with relative proportion of small, dense LDL particles (ρ = -0.423; p = 0.025) in the group with hypertension. CONCLUSIONS The results of our study demonstrated a tendency toward altered distribution of lipoprotein subclasses in favor of more proatherogenic particles in childhood hypertension. Also, hypertensive obese children had increased proatherogenic CETP activity.
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Affiliation(s)
- Osama H Bekhet
- a Department of Medical Biochemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - Aleksandra Zeljkovic
- a Department of Medical Biochemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - Jelena Vekic
- a Department of Medical Biochemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - Dusan Paripovic
- b Nephrology Department , University Children's Hospital , Belgrade , Serbia
| | - Jelena Janac
- a Department of Medical Biochemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - Jelena Joksic
- a Department of Medical Biochemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | - Tamara Gojkovic
- a Department of Medical Biochemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
| | | | - Amira Peco-Antic
- b Nephrology Department , University Children's Hospital , Belgrade , Serbia ;,c School of Medicine , University of Belgrade , Belgrade , Serbia
| | | | - Zorana Jelic-Ivanovic
- a Department of Medical Biochemistry, Faculty of Pharmacy , University of Belgrade , Belgrade , Serbia
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9
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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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10
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Serum CETP concentration is not associated with measures of body fat: The NEO study. Atherosclerosis 2016; 246:267-73. [DOI: 10.1016/j.atherosclerosis.2016.01.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 01/18/2016] [Accepted: 01/18/2016] [Indexed: 01/22/2023]
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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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Effects of bariatric surgery on HDL structure and functionality: results from a prospective trial. J Clin Lipidol 2014; 8:408-17. [PMID: 25110222 DOI: 10.1016/j.jacl.2014.05.001] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 04/11/2014] [Accepted: 05/06/2014] [Indexed: 11/21/2022]
Abstract
BACKGROUND In addition to high-density lipoprotein cholesterol (HDL-C) levels, HDL quality appears also very important for atheroprotection. Obese patients with metabolic syndrome have significantly reduced HDL-C levels and are usually at increased risk for coronary heart disease. Despite that weight loss benefits these patients, its effects on HDL quality and functionality is currently poorly studied. OBJECTIVES We investigated how rapid weight loss affects HDL structure and its antioxidant potential in patients undergoing a malabsorptive bariatric procedure. METHODS Fasting plasma samples were collected the day before and 6 months after the bariatric procedure from 20 morbidly obese patients with body mass index >50, then HDL was isolated and analyzed by biochemical techniques. RESULTS We report a dramatic alteration in the apolipoprotein ratio of HDL that was accompanied by the presence of more mature HDL subspecies and a concomitant increase in the antioxidant potential of HDL. Interestingly, our obese cohort could be distinguished into 2 subgroups. In 35% of patients (n = 7), HDL before surgery had barely detectable apolipoprotein (apo) A-I and apoCIII, and the vast majority of their HDL cholesterol was packed in apoE-containing HDL particles. In the remaining 65% of patients (n = 13), HDL before surgery contained high levels of apoA-I and apoCIII, in addition to apoE. In both subgroups, surgical weight loss resulted in a switch from apoE to apoA-I-containing HDL. CONCLUSIONS Rapid weight loss exerts a significant improvement in HDL structure and functionality that may contribute to the documented beneficial effect of malabsorptive bariatric procedures on cardiovascular health.
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Lundsgaard AM, Kiens B. Gender differences in skeletal muscle substrate metabolism - molecular mechanisms and insulin sensitivity. Front Endocrinol (Lausanne) 2014; 5:195. [PMID: 25431568 PMCID: PMC4230199 DOI: 10.3389/fendo.2014.00195] [Citation(s) in RCA: 162] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Accepted: 10/30/2014] [Indexed: 12/23/2022] Open
Abstract
It has become increasingly apparent that substrate metabolism is subject to gender-specific regulation, and the aim of this review is to outline the available evidence of molecular gender differences in glucose and lipid metabolism of skeletal muscle. Female sex has been suggested to have a favorable effect on glucose homeostasis, and the available evidence from hyperinsulinemic-euglycemic clamp studies is summarized to delineate whether there is a gender difference in whole-body insulin sensitivity and in particular insulin-stimulated glucose uptake of skeletal muscle. Whether an eventual higher insulin sensitivity of female skeletal muscle can be related to gender-specific regulation of molecular metabolism will be topic for discussion. Gender differences in muscle fiber type distribution and substrate availability to and in skeletal muscle are highly relevant for substrate metabolism in men and women. In particular, the molecular machinery for glucose and fatty acid oxidative and storage capacities in skeletal muscle and its implications for substrate utilization during metabolic situations of daily living are discussed, emphasizing their relevance for substrate choice in the fed and fasted state, and during periods of physical activity and recovery. Together, handling of carbohydrate and lipids and regulation of their utilization in skeletal muscle have implications for whole-body glucose homeostasis in men and women. 17-β estradiol is the most important female sex hormone, and the identification of estradiol receptors in skeletal muscle has opened for a role in regulation of substrate metabolism. Also, higher levels of circulating adipokines as adiponectin and leptin in women and their implications for muscle metabolism will be considered.
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Affiliation(s)
- Anne-Marie Lundsgaard
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, August Krogh Centre, University of Copenhagen, Copenhagen, Denmark
| | - Bente Kiens
- Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, August Krogh Centre, University of Copenhagen, Copenhagen, Denmark
- *Correspondence: Bente Kiens, Section of Molecular Physiology, Department of Nutrition, Exercise and Sports, August Krogh Centre, University of Copenhagen, Universitetsparken 13, Copenhagen 2100, Denmark e-mail:
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McEneny J, Blair S, Woodside JV, Murray L, Boreham C, Young IS. High-density lipoprotein subfractions display proatherogenic properties in overweight and obese children. Pediatr Res 2013; 74:279-83. [PMID: 23884162 DOI: 10.1038/pr.2013.93] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Accepted: 12/29/2012] [Indexed: 11/09/2022]
Abstract
BACKGROUND In adults, obesity-driven inflammation can lead to increased cardiovascular disease (CVD). However, information regarding childhood obesity and its inflammatory sequelae is less well defined. Serum amyloid-A (SAA) is an inflammatory molecule that rapidly associates with high-density lipoproteins (HDLs) and renders them dysfunctional. Therefore, SAA may be a useful biomarker to identify increased CVD potential in overweight and obese children. METHODS Young Hearts 2000 is a cross-sectional cohort study in which 92 children who were obese were matched for age and sex with 92 overweight and 92 lean children. HDL(2) and HDL(3) (HDL(2&3)) were isolated from plasma by a three-step rapid-ultracentrifugation procedure. SAA was measured in serum and HDL(2&3) by an enzyme-linked immunosorbent assay procedure, and the activities of cholesterol ester transfer protein (CETP) and lecithin cholesteryl acyltransferase (LCAT) were measured by fluorimetric assays. RESULTS Trends across the groups indicated that SAA increased in serum and HDL(2&3) as BMI increased, as did HDL(2)-CETP and HDL(2)-LCAT activities. CONCLUSION These results have provided evidence that overweight and obese children are exposed to an inflammatory milieu that impacts the antiatherogenic properties of HDL and that could increase CVD risk. This supports the concept that it is important to target childhood obesity to help minimize future cardiovascular events.
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Affiliation(s)
- Jane McEneny
- Centre for Public Health, Nutrition and Metabolism Group, Queen's University Belfast, Belfast, UK.
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15
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Ozmen HK, Askın S. Lecithin: cholesterol acyltransferase and na(+)-k(+)-ATPase activity in patients with breast cancer. J Breast Cancer 2013; 16:159-63. [PMID: 23843847 PMCID: PMC3706860 DOI: 10.4048/jbc.2013.16.2.159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2012] [Accepted: 03/15/2013] [Indexed: 12/05/2022] Open
Abstract
Purpose The aim of this study was to determine whether plasma lecithin:cholesterol acyltransferase (pLCAT) and erythrocyte membrane Na+-K+-ATPase ase (emNaKATPs) activity have a correlation in breast cancer. This study compared these parameters at time points before and after treatment with radiotherapy. Methods The levels of pLCAT and emNaKATPs were assessed in 30 patients with breast carcinoma and 20 control subjects. While emNaKATPs was measured with spectrophotometric method, pLCAT levels was measured using a specific enzyme-linked immunosorbent assay. Results pLCAT levels, both before and after radiotherapy, were found to be decreased in breast cancer patients than in the controls groups (p<0.001 and p<0.001, respectively). Also, pLCAT levels after radiotherapy were found to be decreased in breast cancer patients than the pLCAT levels before radiotherapy (p<0.001). The emNaKATPs activity were higher in the control group than in the breast cancer patients before/after radiotherapy (RT) (p<0.001 and p<0.001, respectively). At the same time, emNaKATPs activity before RT was higher in the breast cancer patients than emNaKATPs activity after RT (p<0.001). There was a significant correlation between pLCAT and emNaKATPs activity in breast cancer patients receiving radiotherapy (r=0.63, p<0.001), but no correlation between in breast cancer patients before RT and control group (r=0.023, p>0.05). Conclusion The results of the present study demonstrated that decreased pLCAT and emNaKATPs activity levels in breast cancer patients after/before RT than control group. In addition, decreased emNaKATPs activity in breast cancer patients receiving radiotherapy may be due to decreased pLCAT concentrations and RT beam. In our opinion, altered activities of pLCAT and emNaKATPs are linked to the treatment effect of radiotherapy. These data may clarify the development of cell membrane dysfunction and lipid metabolism in breast cancer patients receiving radiotherapy.
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Affiliation(s)
- Hilal Kiziltunç Ozmen
- Department of Radiation Oncology, Ataturk University School of Medicine, Erzurum, Turkey
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Høst C, Gormsen LC, Christensen B, Jessen N, Hougaard DM, Christiansen JS, Pedersen SB, Jensen MD, Nielsen S, Gravholt CH. Independent effects of testosterone on lipid oxidation and VLDL-TG production: a randomized, double-blind, placebo-controlled, crossover study. Diabetes 2013. [PMID: 23193189 PMCID: PMC3636625 DOI: 10.2337/db12-0440] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Low testosterone (T) levels in men have been shown to predict development of the metabolic syndrome, but the effects of T on lipid metabolism are incompletely understood. In a randomized, double-blind, placebo-controlled, crossover study, 12 healthy, young males received gonadotropin-releasing hormone agonist treatment 1 month prior to 3 of 4 trial days to induce castrate levels of T. On trial days, T gel was applied to the body containing either high or low physiological T dose or placebo. On the 4th trial day, participants constituted their own eugonadal controls. Each study comprised a 5-h basal period and a 3-h hyperinsulinemic-euglycemic clamp. Short-term hypogonadism did not affect VLDL triglyceride (TG) secretion, nor did it affect VLDL-TG concentrations. It was, however, characterized by lower total lipid oxidation. In addition, acute rescue with high physiological T increased VLDL-TG secretion during both basal and clamp conditions. These data show that T can act through fast nongenomic pathways in the liver. In addition, the early hypogonadal state is characterized by decreased total lipid oxidation, but whether these changes represent early hypogonadal metabolic dysfunction warrants further investigations. T is not a major determinant of resting VLDL-TG kinetics in men.
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Affiliation(s)
- Christian Høst
- Department of Endocrinology and Internal Medicine and the Medical Research Laboratories, Clinical Institute, Aarhus University Hospital, Aarhus, Denmark.
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Kunnen S, Van Eck M. Lecithin:cholesterol acyltransferase: old friend or foe in atherosclerosis? J Lipid Res 2012; 53:1783-99. [PMID: 22566575 PMCID: PMC3413220 DOI: 10.1194/jlr.r024513] [Citation(s) in RCA: 153] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2012] [Revised: 04/23/2012] [Indexed: 11/20/2022] Open
Abstract
Lecithin:cholesterol acyltransferase (LCAT) is a key enzyme that catalyzes the esterification of free cholesterol in plasma lipoproteins and plays a critical role in high-density lipoprotein (HDL) metabolism. Deficiency leads to accumulation of nascent preβ-HDL due to impaired maturation of HDL particles, whereas enhanced expression is associated with the formation of large, apoE-rich HDL(1) particles. In addition to its function in HDL metabolism, LCAT was believed to be an important driving force behind macrophage reverse cholesterol transport (RCT) and, therefore, has been a subject of great interest in cardiovascular research since its discovery in 1962. Although half a century has passed, the importance of LCAT for atheroprotection is still under intense debate. This review provides a comprehensive overview of the insights that have been gained in the past 50 years on the biochemistry of LCAT, the role of LCAT in lipoprotein metabolism and the pathogenesis of atherosclerosis in animal models, and its impact on cardiovascular disease in humans.
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Affiliation(s)
- Sandra Kunnen
- Division of Biopharmaceutics, Leiden/Amsterdam Center for Drug Research, Gorlaeus Laboratories, Leiden University, Leiden, The Netherlands
| | - Miranda Van Eck
- Division of Biopharmaceutics, Leiden/Amsterdam Center for Drug Research, Gorlaeus Laboratories, Leiden University, Leiden, The Netherlands
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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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Vaarhorst AAM, Beekman M, Suchiman EHD, van Heemst D, Houwing-Duistermaat JJ, Westendorp RGJ, Slagboom PE, Heijmans BT. Lipid metabolism in long-lived families: the Leiden Longevity Study. AGE (DORDRECHT, NETHERLANDS) 2011; 33:219-27. [PMID: 20811950 PMCID: PMC3127468 DOI: 10.1007/s11357-010-9172-6] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2010] [Accepted: 07/28/2010] [Indexed: 05/05/2023]
Abstract
Mechanisms underlying the variation in human life expectancy are largely unknown, but lipid metabolism and especially lipoprotein size was suggested to play an important role in longevity. We have performed comprehensive lipid phenotyping in the Leiden Longevity Study (LLS). By applying multiple logistic regression analysis we tested for the first time the effects of parameters in lipid metabolism (i.e., classical serum lipids, lipoprotein particle sizes, and apolipoprotein E levels) on longevity independent of each other. Parameters in lipid metabolism were measured in offspring of nonagenarian siblings from 421 families of the LLS (n = 1,664; mean age, 59 years) and in the partners of the offspring as population controls (n = 711; mean age, 60 years). In the initial model, where lipoprotein particles sizes, classical serum lipids and apolipoprotein E were included, offspring had larger low-density lipoprotein (LDL) particle sizes (p = 0.017), and lower triglyceride levels (p = 0.026), indicating that they displayed a more beneficial lipid profile. After backwards regression only LDL size (p = 0.014) and triglyceride levels (p = 0.05) were associated with offspring from long-lived families. Sex-specific backwards regression analysis revealed that LDL particle sizes were associated with male longevity (increase in log odds ratio (OR) per unit = 0.21; p = 0.023). Triglyceride levels (decrease OR per unit = 0.22; p = 0.01), but not LDL particle size, were associated with female longevity. Due to the analysis of a comprehensive lipid profile, we confirmed an important role of lipid metabolism in human longevity, with LDL size and triglyceride levels as major predicting factors.
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Affiliation(s)
- Anika A M Vaarhorst
- Molecular Epidemiology Section, Department Medical Statistics and Bioinformatics, Leiden University Medical Centre, RC, Leiden, The Netherlands.
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Sex dimorphism in serum lecithin: cholesterol acyltransferase and lipoprotein lipase activities in adult sickle cell anaemia patients with proteinuria. Indian J Clin Biochem 2010; 26:57-61. [PMID: 22211015 DOI: 10.1007/s12291-010-0096-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2010] [Accepted: 12/01/2010] [Indexed: 10/18/2022]
Abstract
Proteinuria in subjects with sickle cell anaemia (SCA) is an indication of an ongoing renal insufficiency and it's prevalence varies between sexes. We evaluated sex differences in the activities of Lecithin: cholesterol acyltransferase (LCAT), Lipoprotein lipase (LPL) and the levels of lipoproteins in SCA patients with proteinuria. Fifty SCA patients (30 males aged: 26.4 ± 7.3 years and 20 females, aged 25.4 ± 2.6 years) and 50 age and sex matched control SCA patients were recruited for the study. Random urine specimens were collected and tested for the presence of albumin by urine dipstick technique. A 24 h urinary protein was quantitated using sulphosalicylic acid technique. Fasting serum total cholesterol, triglyceride, urea and creatinine were determined using enzymes catalyzed colorimetric methods. HDL cholesterol was determined in the supernatant after precipitation with manganese chloride-phosphotungstic acid solution. LCAT was measured using the Anasolv LCAT assay with proteoliposome as substrate. LPL was determined by incubating the serum in glyceryl trioleate substrate, the glycerol liberated was measured in an aliquot of the incubating mixture. In male SCA controls there was 18.2 and 6.9% increase in the activities of LPL and LCAT respectively when compared with females but in SCA patients with proteinuria there was 8.4 and 5.2% decreases in the male SCA patients compared with females. The concentration of 24 h urine protein in the SCA male subjects with proteinuria was significantly higher (0.25 g/day; P < 0.001) compared with the SCA female patients with proteinuria (0.09 g/day). There are sex differences in the activities of LCAT and LPL in SCA patients with proteinuria. Metabolism of these lipolytic enzymes may be modulated differently in SCA patients with proteinuria.
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Quintão ECR, Cazita PM. Lipid transfer proteins: past, present and perspectives. Atherosclerosis 2009; 209:1-9. [PMID: 19733354 DOI: 10.1016/j.atherosclerosis.2009.08.002] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2009] [Revised: 07/02/2009] [Accepted: 08/03/2009] [Indexed: 11/15/2022]
Abstract
Lipid transfer proteins (PLTP and CETP) play roles in atherogenesis by modifying the arterial intima cholesterol content via altering the concentration and function of plasma lipoproteins and influencing inflammation. In this regard, endotoxins impair the reverse cholesterol transport (RCT) system in an endotoxemic rodent model, supporting a pro-inflammatory role of HDL reported in chronic diseases where atherosclerosis is premature. High PLTP activity related to atherosclerosis in some clinical studies, but the mechanisms involved could not be ascertained. In experimental animals the relation of elevated plasma PLTP concentration with atherosclerosis was confounded by HDL-C lowering and by unfavorable effects on several inflammatory markers. Coincidently, PLTP also increases in human experimental endotoxemia and in clinical sepsis. Human population investigations seem to favor low CETP as atheroprotective; this is supported by animal models where overexpression of huCETP is atherogenic, most likely due to increased concentration of apoB-lipoprotein-cholesterol. Thus, in spite of CETP facilitating the HDL-C-mediated RCT, the reduction of apoB-LP-cholesterol concentration is the probable antiatherogenic mechanism of CETP inhibition. On the other hand, experimental huCETP expression protects mice from the harmful effects of a bacterial polysaccharide infusion and the mortality rate of severely ill patients correlates with reduction of the plasma CETP concentration. Thus, the roles played by PLTP and CETP on atherosclerosis and acute inflammation seem contradictory. Therefore, the biological roles of PLTP and CETP must be carefully monitored when investigating drugs that inhibit their activity in the prevention of atherosclerosis.
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Affiliation(s)
- Eder C R Quintão
- Lipids Lab, LIM 10, Faculty of Medical Sciences, University of São Paulo, SP, Brazil.
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