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Gautier T, Deckert V, Nguyen M, Desrumaux C, Masson D, Lagrost L. New therapeutic horizons for plasma phospholipid transfer protein (PLTP): Targeting endotoxemia, infection and sepsis. Pharmacol Ther 2021; 236:108105. [PMID: 34974028 DOI: 10.1016/j.pharmthera.2021.108105] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Revised: 12/10/2021] [Accepted: 12/27/2021] [Indexed: 12/13/2022]
Abstract
Phospholipid Transfer Protein (PLTP) transfers amphiphilic lipids between circulating lipoproteins and between lipoproteins, cells and tissues. Indeed, PLTP is a major determinant of the plasma levels, turnover and functionality of the main lipoprotein classes: very low-density lipoproteins (VLDL), low-density lipoproteins (LDL) and high-density lipoproteins (HDL). To date, most attention has been focused on the role of PLTP in the context of cardiometabolic diseases, with additional insights in neurodegenerative diseases and immunity. Importantly, beyond its influence on plasma triglyceride and cholesterol transport, PLTP plays a key role in the modulation of the immune response, with immediate relevance to a wide range of inflammatory diseases including bacterial infection and sepsis. Indeed, emerging evidence supports the role of PLTP, in the context of its association with lipoproteins, in the neutralization and clearance of bacterial lipopolysaccharides (LPS) or endotoxins. LPS are amphipathic molecules originating from Gram-negative bacteria which harbor major pathogen-associated patterns, triggering an innate immune response in the host. Although the early inflammatory reaction constitutes a key step in the anti-microbial defense of the organism, it can lead to a dysregulated inflammatory response and to hemodynamic disorders, organ failure and eventually death. Moreover, and in addition to endotoxemia and acute inflammation, small amounts of LPS in the circulation can induce chronic, low-grade inflammation with long-term consequences in several metabolic disorders such as atherosclerosis, obesity and diabetes. After an updated overview of the role of PLTP in lipid transfer, lipoprotein metabolism and related diseases, current knowledge of its impact on inflammation, infection and sepsis is critically appraised. Finally, the relevance of PLTP as a new player and novel therapeutic target in the fight against inflammatory diseases is considered.
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Affiliation(s)
- Thomas Gautier
- INSERM, LNC UMR1231, Dijon, France; University of Bourgogne and Franche-Comté, LNC UMR1231, Dijon, France; FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France.
| | - Valérie Deckert
- INSERM, LNC UMR1231, Dijon, France; University of Bourgogne and Franche-Comté, LNC UMR1231, Dijon, France; FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France
| | - Maxime Nguyen
- INSERM, LNC UMR1231, Dijon, France; University of Bourgogne and Franche-Comté, LNC UMR1231, Dijon, France; FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France; Service Anesthésie-Réanimation Chirurgicale, Dijon University Hospital, Dijon, France
| | - Catherine Desrumaux
- INSERM, U1198, Montpellier, France; Faculty of Sciences, Université Montpellier, Montpellier, France
| | - David Masson
- INSERM, LNC UMR1231, Dijon, France; University of Bourgogne and Franche-Comté, LNC UMR1231, Dijon, France; FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France; Plateau Automatisé de Biochimie, Dijon University Hospital, Dijon, France
| | - Laurent Lagrost
- INSERM, LNC UMR1231, Dijon, France; University of Bourgogne and Franche-Comté, LNC UMR1231, Dijon, France; FCS Bourgogne-Franche Comté, LipSTIC LabEx, Dijon, France; Service de la Recherche, Dijon University Hospital, Dijon, France.
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Impact of Phospholipid Transfer Protein in Lipid Metabolism and Cardiovascular Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1276:1-13. [PMID: 32705590 DOI: 10.1007/978-981-15-6082-8_1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PLTP plays an important role in lipoprotein metabolism and cardiovascular disease development in humans; however, the mechanisms are still not completely understood. In mouse models, PLTP deficiency reduces cardiovascular disease, while its overexpression induces it. Therefore, we used mouse models to investigate the involved mechanisms. In this chapter, the recent main progresses in the field of PLTP research are summarized, and our focus is on the relationship between PLTP and lipoprotein metabolism, as well as PLTP and cardiovascular diseases.
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Song G, Zong C, Shao M, Yu Y, Liu Q, Wang H, Qiu T, Jiao P, Guo Z, Lee P, Luo Y, Jiang XC, Qin S. Phospholipid transfer protein (PLTP) deficiency attenuates high fat diet induced obesity and insulin resistance. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1305-1313. [PMID: 31220615 DOI: 10.1016/j.bbalip.2019.06.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 06/07/2019] [Accepted: 06/14/2019] [Indexed: 01/09/2023]
Abstract
Increased phospholipid transfer protein (PLTP) activity has been found to be associated with obesity, and metabolic syndrome in humans. However, whether or not PLTP has a direct effect on insulin sensitivity and obesity is largely unknown. Here we analyzed the effect by using PLTP knockout (PLTP-/-) mouse model. Although, PLTP-/- mice have normal body-weight-gain under chow diet, these mice were protected from high-fat-diet-induced obesity and insulin resistance, compared with wild type mice. In order to understand the mechanism, we evaluated insulin receptor and Akt activation and found that PLTP deficiency significantly enhanced phosphorylated insulin receptor and Akt levels in high-fat-diet fed mouse livers, adipose tissues, and muscles after insulin stimulation, while total Akt and insulin receptor levels were unchanged. Moreover, we found that the PLTP deficiency induced significantly more GLUT4 protein in the plasma membranes of adipocytes and muscle cells after insulin stimulation. Finally, we found that PLTP-deficient hepatocytes had less sphingomyelins and free cholesterols in the lipid rafts and plasma membranes than that of controls and this may provide a molecular basis for PLTP deficiency-mediated increase in insulin sensitivity. We have concluded that PLTP deficiency leads to an improvement in tissue and whole-body insulin sensitivity through modulating lipid levels in the plasma membrane, especially in the lipid rafts.
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Affiliation(s)
- Guohua Song
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China.
| | - Chuanlong Zong
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Mingzhu Shao
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Yang Yu
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Qian Liu
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Hui Wang
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Tingting Qiu
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Peng Jiao
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Zheng Guo
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China
| | - Phoebe Lee
- Downstate Medical Center State University of New York, NY, USA
| | - Yi Luo
- Downstate Medical Center State University of New York, NY, USA
| | | | - Shucun Qin
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of Atherosclerosis, Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong, China.
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Zhao XM, Wang Y, Yu Y, Jiang H, Babinska A, Chen XY, He KG, Min XD, Han JJ, Yang CX, Deng K, Xue J, Zhang X, Song GH, Qin SC, Jiang XC. Plasma Phospholipid Transfer Protein Promotes Platelet Aggregation. Thromb Haemost 2018; 118:2086-2097. [PMID: 30419596 DOI: 10.1055/s-0038-1675228] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
It remains unclear whether plasma phospholipid transfer protein (PLTP) is involved in hyper-coagulation or hypo-coagulation. This study investigated the direct effect of PLTP on platelet aggregation and the underlying mechanism. Washed platelets from humans or mice and mouse platelet-rich plasma and human recombinant PLTP were isolated. PLTP is present in human platelets. We assessed adenosine diphosphate (ADP)-, collagen- and thrombin-induced platelet aggregation, phosphatidylserine externalization and photothrombosis-induced cerebral infarction in mice. PLTP over-expression increased platelet aggregation, while PLTP deficiency had the opposing reaction. Human recombinant PLTP increased both mouse and human platelet aggregation in a dose-dependent manner. Phosphatidylserine externalization provides a water/lipid surface for the interaction of coagulation factors, which accelerates thrombosis. Compared with wild-type controls, platelets from PLTP transgenic mice had significantly more phosphatidylserine on the exterior surface of the plasma membrane, whereas platelets from PLTP-deficient mice had significantly less phosphatidylserine on the surface, thus PLTP influences fibrinogen binding on the plasma membrane. Moreover, recombinant PLTP together with ADP significantly increased phosphatidylserine exposure on the plasma membrane of PLTP-deficient platelets, thereby increasing fibrinogen binding. PLTP over-expression significantly accelerated the incidence of photothrombosis-induced infarction in mice, whereas PLTP deficiency significantly reduced the frequency of infarction. We concluded that PLTP promotes phosphatidylserine externalization at the plasma membrane of platelets and accelerates ADP- or collagen-induced platelet aggregation. This effect plays an important role in the initiation of thrombin generation and platelet aggregation under sheer stress conditions. Thus, PLTP is involved in hyper-coagulation. Therefore, PLTP inhibition could be a novel approach for countering thrombosis.
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Affiliation(s)
- Xiao-Min Zhao
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Yun Wang
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Yang Yu
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Hui Jiang
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, New York, United States
| | - Anna Babinska
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, New York, United States
| | - Xiu-Yu Chen
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Ke-Gui He
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Xiang-Dong Min
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Ji-Ju Han
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Chen-Xi Yang
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Kevin Deng
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, New York, United States
| | - Jing Xue
- Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, China
| | - Xiangjian Zhang
- Hebei Collaborative Innovation Center for Cardio-cerebrovascular Disease, Hebei Key Laboratory of Vascular Homeostasis, Shijiazhuang, China
| | - Guo-Hua Song
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Shu-Cun Qin
- The Institute of Atherosclerosis, Taishan Medical University, Taian, China
| | - Xian-Cheng Jiang
- Department of Cell Biology, SUNY Downstate Medical Center, Brooklyn, New York, United States.,Molecular and Cellular Cardiology Program, VA New York Harbor Healthcare System, Brooklyn, New York, United States
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Boyer M, Lévesque V, Poirier P, Marette A, Mitchell PL, Mora S, Mathieu P, Després JP, Larose É, Arsenault BJ. Longitudinal Changes in Cholesterol Efflux Capacities in Patients With Coronary Artery Disease Undergoing Lifestyle Modification Therapy. J Am Heart Assoc 2018; 7:JAHA.118.008681. [PMID: 29858367 PMCID: PMC6015361 DOI: 10.1161/jaha.118.008681] [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] [Indexed: 01/11/2023]
Abstract
BACKGROUND Our objective was to identify the determinants of high-density lipoprotein cholesterol efflux capacity (HDL-CEC) changes in patients with coronary artery disease who participated in a lifestyle modification program aimed at increasing physical activity levels and improving diet quality. METHODS AND RESULTS A total of 86 men with coronary artery disease aged between 35 and 80 years participated in a 1-year lifestyle modification program that aimed to achieve a minimum of 150 minutes of aerobic physical activity weekly and improve diet quality. HDL-CECs were measured before and after the 1-year intervention using 3H-cholesterol-labeled J774 and HepG2 cells. Visceral, subcutaneous, and cardiac adipose tissue levels were assessed before and after the intervention using magnetic resonance imaging. Lipoprotein particle size and concentrations were measured by proton nuclear magnetic resonance spectroscopy and a complete lipoprotein-lipid profile was obtained. At baseline, the best correlate of HDL-CECs were apolipoprotein AI (R2=0.35, P<0.0001) and high-density lipoprotein cholesterol (R2=0.21, P<0.0001) for J774-HDL-CECs and HepG2-HDL-CECs, respectively. Baseline and longitudinal changes in HDL-CECs were associated with several lipoprotein size and concentration indices, although high-density lipoprotein cholesterol was the best predictor of longitudinal changes in J774-HDL-CECs (R2=0.18, P=0.002) and apolipoprotein AI was found to be the best predictor of longitudinal changes in HepG2 cholesterol efflux capacities (R2=0.21, P=0.002). CONCLUSIONS Results of this study suggest that increases in high-density lipoprotein cholesterol and apolipoprotein AI levels typically observed in patients with coronary artery disease undergoing healthy lifestyle modification therapy may be indicative of higher plasma concentrations of functional high-density lipoprotein particles.
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Affiliation(s)
- Marjorie Boyer
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada.,Department of Medicine, Faculty of Medicine, Université Laval, Québec, Canada
| | - Valérie Lévesque
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada.,Department of Kinesiology, Faculty of Medicine, Université Laval, Québec, Canada
| | - Paul Poirier
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada.,Faculty of Pharmacy, Université Laval, Québec, Canada
| | - André Marette
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada.,Department of Medicine, Faculty of Medicine, Université Laval, Québec, Canada
| | - Patricia L Mitchell
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada
| | - Samia Mora
- Center for Lipid Metabolomics, Divisions of Preventive and Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA
| | - Patrick Mathieu
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada.,Department of Surgery, Faculty of Medicine, Université Laval, Québec, Canada
| | - Jean-Pierre Després
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada.,Department of Kinesiology, Faculty of Medicine, Université Laval, Québec, Canada
| | - Éric Larose
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada.,Department of Medicine, Faculty of Medicine, Université Laval, Québec, Canada
| | - Benoit J Arsenault
- Centre de recherche de l'Institut universitaire de cardiologie et de pneumologie de Québec, Canada .,Department of Medicine, Faculty of Medicine, Université Laval, Québec, Canada
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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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Yu Y, Lei X, Jiang H, Li Z, Creemers JWM, Zhang M, Qin S, Jin W, Jiang X. Prodomain of Furin Promotes Phospholipid Transfer Protein Proteasomal Degradation in Hepatocytes. J Am Heart Assoc 2018; 7:e008526. [PMID: 29680823 PMCID: PMC6015287 DOI: 10.1161/jaha.118.008526] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2018] [Accepted: 03/22/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND Phospholipid transfer protein (PLTP) is one of the major modulators of lipoprotein metabolism and atherosclerosis development; however, little is known about the regulation of PLTP. The effect of hepatic prodomain of furin (profurin) expression on PLTP processing and function is investigated. METHODS AND RESULTS We used adenovirus expressing profurin in mouse liver to evaluate PLTP activity, mass, and plasma lipid levels. We coexpressed PLTP and profurin in human hepatoma cell line cells and studied their interaction. We found profurin expression significantly reduced plasma lipids, plasma PLTP activity, and mass in all tested mouse models, compared with controls. Moreover, the expression of profurin dramatically reduced liver PLTP activity and protein level. We further explored the mechanism using in vivo and ex vivo approaches. We found that profurin can interact with intracellular PLTP and promote its ubiquitination and proteasomal degradation, resulting in less PLTP secretion from the hepatocytes. Furin does not cleave PLTP; instead, it forms a complex with PLTP, likely through its prodomain. CONCLUSIONS Our study reveals that hepatic PLTP protein is targeted for proteasomal degradation by profurin expression, which could be a novel posttranslational mechanism underlying PLTP regulation.
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Affiliation(s)
- Yang Yu
- Department of Cell BiologyState University of New York Downstate Medical CenterBrooklynNY
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Xia Lei
- Department of Cell BiologyState University of New York Downstate Medical CenterBrooklynNY
| | - Hui Jiang
- Department of Cell BiologyState University of New York Downstate Medical CenterBrooklynNY
| | - Zhiqiang Li
- Department of Cell BiologyState University of New York Downstate Medical CenterBrooklynNY
| | - John W. M. Creemers
- Laboratory of Biochemical NeuroendocrinologyDepartment of Human GeneticsHerestraat 49 bus 6023000 LeuvenBelgium
| | - Ming Zhang
- Department of Cell BiologyState University of New York Downstate Medical CenterBrooklynNY
| | - Shucun Qin
- Key Laboratory of Atherosclerosis in Universities of Shandong and Institute of AtherosclerosisTaishan Medical UniversityTaianChina
| | - Weijun Jin
- Department of Cell BiologyState University of New York Downstate Medical CenterBrooklynNY
| | - Xian‐Cheng Jiang
- Department of Cell BiologyState University of New York Downstate Medical CenterBrooklynNY
- Molecular and Cellular Cardiology ProgramVeterans Affair New York Harbor Healthcare SystemBrooklynNY
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Jiang XC. Phospholipid transfer protein: its impact on lipoprotein homeostasis and atherosclerosis. J Lipid Res 2018; 59:764-771. [PMID: 29438986 DOI: 10.1194/jlr.r082503] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 01/10/2018] [Indexed: 12/25/2022] Open
Abstract
Phospholipid transfer protein (PLTP) is one of the major modulators of lipoprotein metabolism and atherosclerosis development in humans; however, we still do not quite understand the mechanisms. In mouse models, PLTP overexpression induces atherosclerosis, while its deficiency reduces it. Thus, mouse models were used to explore the mechanisms. In this review, I summarize the major progress made in the PLTP research field and emphasize its impact on lipoprotein metabolism and atherosclerosis, as well as its regulation.
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Affiliation(s)
- Xian-Cheng Jiang
- Department of Cell Biology, Downstate Medical Center, State University of New York, Brooklyn, NY
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Skoczyńska A, Wojakowska A, Turczyn B, Zatońska K, Wołyniec M, Szuba A. Serum CETP and PLTP activity in middle-aged men living in urban or rural area of the Lower Silesia region. PURE Poland sub-study. Arch Med Sci 2016; 12:704-14. [PMID: 27478449 PMCID: PMC4947617 DOI: 10.5114/aoms.2016.60950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Accepted: 09/09/2015] [Indexed: 12/15/2022] Open
Abstract
INTRODUCTION The dependence of lipid transfer proteins on significant pro-atherogenic factors is unclear. The aim of the study was to evaluate serum cholesteryl ester transfer protein (CETP) and phospholipid transfer protein (PLTP) activity in relation to lipid disturbances in men living in an urban or rural area. MATERIAL AND METHODS A group of 427 men, volunteers for the Prospective Urban Rural Epidemiology (PURE) sub-study - 263 urban inhabitants (aged 51.9 ±6.0) and 164 residents of villages (aged 51.1 ±5.9) - were examined. In the multivariable linear regression model, the following factors were included as potential confounders: age, body mass index (BMI), smoking, alcohol consumption, hs-C-reactive protein reaction (hs-CRP) and co-existence of chronic diseases. RESULTS In multiple linear regression models, site of residence (urban or rural area) was the most important independent and consistent predictor of CETP and PLTP activity; β coefficients (95% CI) for CETP (0.18) and PLTP (-0.29) were significant at levels of p < 0.001. Three-way analysis of variance showed no effect of smoking or moderate alcohol consumption on lipid transfer proteins; however, CETP activity showed an interaction effect between these risk factors. In the group of all men, CETP activity was significantly and positively correlated with total cholesterol (r = 0.24), low-density lipoprotein cholesterol (r = 0.18), and non-high density lipoprotein cholesterol (r = 0.21), whereas PLTP activity was correlated with BMI (r = 0.12). Body mass index in rural men was higher than in the urban male population. CONCLUSIONS Increased PLTP activity, recognized as a pro-atherogenic factor, and decreased CETP activity, known as a protective factor, both observed in men living in rural areas, are probably conditioned by nutritional and/or genetic factors.
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Affiliation(s)
- Anna Skoczyńska
- Department of Internal and Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland
| | - Anna Wojakowska
- Department of Internal and Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland
| | - Barbara Turczyn
- Department of Internal and Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland
| | - Katarzyna Zatońska
- Department of Internal and Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland
| | - Maria Wołyniec
- Department of Internal and Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland
| | - Andrzej Szuba
- Department of Internal and Occupational Diseases and Hypertension, Wroclaw Medical University, Wroclaw, Poland
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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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Dullaart RPF, Vergeer M, de Vries R, Kappelle PJWH, Dallinga-Thie GM. Type 2 diabetes mellitus interacts with obesity and common variations in PLTP to affect plasma phospholipid transfer protein activity. J Intern Med 2012; 271:490-8. [PMID: 21973210 DOI: 10.1111/j.1365-2796.2011.02465.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND Phospholipid transfer protein (PLTP) is an emerging cardiometabolic risk marker that is important in high-density lipoprotein (HDL) and triglyceride metabolism. Plasma PLTP activity is elevated in type 2 diabetes mellitus, whereas glucose may regulate PLTP gene transcription in vitro. Of interest, common PLTP variations that predict cardiovascular disease have been identified recently. We investigated whether the diabetic state is able to amplify relationships between obesity and PLTP gene variations with circulating PLTP levels. SUBJECTS AND METHODS Plasma PLTP activity (using a phospholipid vesicles-HDL system), PLTP gene score [number of PLTP activity-decreasing alleles based on two tagging polymorphisms (rs378114 and rs60- 65904)] and waist circumference were determined in two Dutch cohorts comprising 237 patients with type 2 diabetes and 78 control subjects. RESULTS Patients with diabetes were more obese (P < 0.001 for prevalence of increased waist circumference) and had 13% higher plasma PLTP activity (P < 0.001). PLTP gene score was not different in diabetic and control subjects (P = 0.40). PLTP activity was highest in patients with diabetes with an enlarged waist and lowest in control subjects with a normal waist circumference (P < 0.001). Multiple linear regression analysis revealed a positive interaction between diabetes status and waist circumference on PLTP activity (β = 0.200, P = 0.005). Furthermore, diabetes status (β = -0.485, P = 0.046) or HbA1c (β = -0.240, P = 0.035) interacted with PLTP gene score to affect PLTP activity. CONCLUSIONS Type 2 diabetes and enlarged waist circumference interact to impact on plasma PLTP activity. Diabetes may also amplify the association between plasma PLTP activity and common PLTP gene variations. Our findings support the hypothesis that diabetes-environment and diabetes-gene interactions govern plasma PLTP activity.
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Affiliation(s)
- R P F Dullaart
- Department of Endocrinology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands.
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12
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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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13
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de Vries R, Kappelle PJ, Dallinga-Thie GM, Dullaart RP. Plasma phospholipid transfer protein activity is independently determined by obesity and insulin resistance in non-diabetic subjects. Atherosclerosis 2011; 217:253-9. [DOI: 10.1016/j.atherosclerosis.2011.03.021] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 03/03/2011] [Accepted: 03/14/2011] [Indexed: 12/13/2022]
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14
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Abstract
Obesity is a pathological condition aggregating a substantial number of proatherogenic factors, such as insulin resistance, type 2 diabetes mellitus, dyslipidaemia and hypertension. In addition to these classic cardiometabolic risk factors, atherosclerosis may be aggravated by other non-classic factors, which are characterized as conditional, including homocysteine, fibrinogen, lipoprotein(a), LDL particle size and high-sensitivity CRP. Some of these biomarkers are disturbed in obesity because of a combination of dietary factors, hypertrophic adipose tissue, low-grade inflammation, insulin resistance and other parameters under investigation. For the reduction of these risk factors, weight loss exceeding 10-20% of the initial body weight is probably necessary, achieved through either conventional lifestyle measures or more drastic interventions such as bariatric surgery. It has been shown that certain well-balanced diets, such as the Mediterranean diet, constitute a means of improving in a concerted manner the levels of CRP, fibrinogen, homocysteine and small dense LDL particles, regardless of weight loss. The significance of considering these factors in weight management intervention is an issue that needs further investigation.
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Affiliation(s)
- T Tzotzas
- Department of Endocrinology, Diabetes andMetabolism, Panagia General Hospital,Thessaloniki, Greece.
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15
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Aron-Wisnewsky J, Julia Z, Poitou C, Bouillot JL, Basdevant A, Chapman MJ, Clement K, Guerin M. Effect of bariatric surgery-induced weight loss on SR-BI-, ABCG1-, and ABCA1-mediated cellular cholesterol efflux in obese women. J Clin Endocrinol Metab 2011; 96:1151-9. [PMID: 21289254 DOI: 10.1210/jc.2010-2378] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AIM We tested the hypothesis that quantitative changes in high-density lipoprotein (HDL) particles weight loss induced by Roux-en-Y bypass (RYGBP) in morbidly obese subjects might be associated with improved functionality of these particles in the reverse cholesterol transport pathway. METHODS AND RESULTS Thirty-four morbidly obese women were recruited and followed up before and 6 months after RYGBP. After surgery, along with a major weight loss (-20%; P < 0.0001), we observed a significant increase in HDL mass concentration (+14%; P < 0.04), reflecting a specific increase in large HDL2 subfraction levels (+42%; P < 0.01), whereas those of HDL3 remained unchanged. Cholesterol ester transfer protein activity decreased significantly (-15%; P < 0.0001). Efflux capacity of total plasma increased significantly via both scavenger receptor class B type I (SR-BI) (+58%; P < 0.0001) and ATP binding cassette G1 (ABCG1) (+26%; P < 0.0001) pathways. Such enhanced capacity resulted from increased capacity of HDL2 particles to mediate cholesterol efflux through the SR-BI pathway (+56%, P < 0.001) and from the increase plasma level of cholesteryl ester-rich HDL2 particles for the ABCG1 pathway. CONCLUSION RYGBP-induced weight loss results in improvement in atherogenic lipid profile including a shift toward a more cardioprotective HDL subfraction profile. In addition, our in vitro studies demonstrated an increased in plasma efflux capacity via both SR-BI and ABCG1 after surgery.
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Affiliation(s)
- Judith Aron-Wisnewsky
- Assistance Publique-Hôpitaux de Paris, Endocrinology and Nutrition Department, Human Research Nutrition Center, Pitié-Salpêtrière Hospital, F-75013 Paris, France
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16
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Effect of exercise performed at anaerobic threshold on serum growth hormone and body fat distribution in obese patients with type 2 diabetes. Obes Res Clin Pract 2011; 5:e1-e78. [DOI: 10.1016/j.orcp.2010.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2010] [Revised: 10/31/2010] [Accepted: 11/04/2010] [Indexed: 11/15/2022]
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17
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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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18
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Exchanging carbohydrate or protein for fat improves lipid-related cardiovascular risk profile in overweight men and women when consumed ad libitum. J Investig Med 2010; 58:711-9. [PMID: 20305576 DOI: 10.231/jim.0b013e3181da4d37] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND The impact of low-fat diets on the plasma lipoprotein profile is incompletely understood. METHODS We conducted two 16-week dietary studies to compare the effects of a moderate-fat (mod-FAT) baseline diet with isocaloric and ad libitum low-fat diets rich in either carbohydrates (high-CHO, n = 16) or protein (high-PRO, n = 19) on plasma lipids, post-heparin lipase activities, cholesteryl ester transfer protein, and phospholipid transfer protein. RESULTS Switching from the mod-FAT to the isocaloric high-CHO diet lowered plasma high-density lipoprotein cholesterol concentrations (P < 0.001) and tended to increase triglyceride levels (P = 0.087). Cholesterol content in the larger, buoyant low-density lipoprotein (LDL) fractions decreased, whereas those of the very-low-density lipoprotein, intermediate-density lipoprotein, and smaller, denser LDL fractions tended to increase. These changes were largely reversed when subjects lost weight by consuming this high-CHO diet ad libitum. Switching from the mod-FAT diet to the isocaloric high-PRO diet did not increase cholesterol content in the small-dense LDL fraction and led to decreases in both LDL and high-density lipoprotein cholesterol in plasma (P < 0.001 for both).Consumption of the high-protein ad libitum diet accompanied by weight loss did not change plasma lipids further, except for a shift of cholesterol from dense low-density lipoprotein fractions to more buoyant low-density lipoprotein fractions. Cholesteryl ester transfer protein concentrations decreased with high-cholesterol feeding, whereas cholesteryl ester transfer protein concentrations and hepatic lipase and phospholipid transfer protein activities all decreased during high-protein feeding. CONCLUSIONS Both high-CHO and high-PRO diets improve plasma lipid-related risk of cardiovascular disease when consumed ad libitum.
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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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20
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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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Tzotzas T, Desrumaux C, Lagrost L. Plasma phospholipid transfer protein (PLTP): review of an emerging cardiometabolic risk factor. Obes Rev 2009; 10:403-11. [PMID: 19413703 DOI: 10.1111/j.1467-789x.2009.00586.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Plasma phospholipid transfer protein (PLTP) is a lipid transfer glycoprotein that binds to and transfers a number of amphipathic compounds. In earlier studies, the attention of the scientific community focused on the positive role of PLTP in high-density lipoprotein (HDL) metabolism. However, this potentially anti-atherogenic role of PLTP has been challenged recently by another picture: PLTP arose as a pro-atherogenic factor through its ability to increase the production of apolipoprotein B-containing lipoproteins, to decrease their antioxidative protection and to trigger inflammation. In humans, PLTP has mostly been studied in patients with cardiometabolic disorders. Both PLTP and related cholesteryl ester transfer protein (CETP) are secreted proteins, and adipose tissue is an important contributor to the systemic pools of these two proteins. Coincidently, high levels of PLTP and CETP have been found in the plasma of obese patients. PLTP activity and mass have been reported to be abnormally elevated in type 2 diabetes mellitus (T2DM) and insulin-resistant states, and this elevation is frequently associated with hypertriglyceridemia and obesity. This review article presents the state of knowledge on the implication of PLTP in lipoprotein metabolism, on its atherogenic potential, and the complexity of its implication in obesity, insulin resistance and T2DM.
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Affiliation(s)
- T Tzotzas
- Department of Nutrition and Dietetics, Technological Educational Institution, Thessaloniki, Greece.
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22
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Smith SR, Prosser WA, Donahue DJ, Morgan ME, Anderson CM, Shanahan WR. Lorcaserin (APD356), a selective 5-HT(2C) agonist, reduces body weight in obese men and women. Obesity (Silver Spring) 2009; 17:494-503. [PMID: 19057523 DOI: 10.1038/oby.2008.537] [Citation(s) in RCA: 132] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Lorcaserin (APD356) is a potent, selective 5-HT(2C) agonist with ~15-fold and 100-fold selectivity vs. 5-HT(2A) and 5-HT(2B) receptors, respectively. This study evaluated the safety and efficacy of lorcaserin for weight reduction in obese patients during a 12-week period. The randomized, double-blind, placebo-controlled, parallel-arm study enrolled 469 men and women between ages 18 and 65 and with BMI 30-45 kg/m(2). Patients received placebo, lorcaserin 10 mg q.d., lorcaserin 15 mg q.d., or lorcaserin 10 mg b.i.d. for 12 weeks, and were counseled to maintain their usual diet and activity. The primary end point was change in weight from baseline to day 85 by completer analysis. Safety analyses included echocardiograms at Screening and day 85/study exit. Lorcaserin was associated with progressive weight loss of 1.8 kg, 2.6 kg, and 3.6 kg at 10 mg q.d., 15 mg q.d., and 10 mg b.i.d., respectively, compared to placebo weight loss of 0.3 kg (P < 0.001 for each group). Similar results were seen by intent-to-treat last observation-carried forward (ITT-LOCF) analysis. The proportions of completers achieving > or =5% of initial body weight were 12.8, 19.5, 31.2, and 2.3% in the 10 mg q.d., 15 mg q.d., 10 mg b.i.d., and placebo groups, respectively. The most frequent adverse events (AEs) were transient headache, nausea, and dizziness. Echocardiograms showed no apparent drug-related effects on heart valves or pulmonary artery pressure (PAP). Lorcaserin was well tolerated and efficacious for weight reduction in this 12-week study. Longer-term trials employing behavior modification will be needed to more fully assess its safety and efficacy.
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Affiliation(s)
- Steven R Smith
- Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, Louisiana, USA
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