1
|
Sylvers-Davie KL, Bierstedt KC, Schnieders MJ, Davies BSJ. Endothelial lipase variant T111I does not alter inhibition by angiopoietin-like proteins. Sci Rep 2024; 14:4246. [PMID: 38379026 PMCID: PMC10879187 DOI: 10.1038/s41598-024-54705-6] [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: 09/28/2023] [Accepted: 02/15/2024] [Indexed: 02/22/2024] Open
Abstract
High levels of HDL-C are correlated with a decreased risk of cardiovascular disease. HDL-C levels are modulated in part by the secreted phospholipase, endothelial lipase (EL), which hydrolyzes the phospholipids of HDL and decreases circulating HDL-C concentrations. A 584C/T polymorphism in LIPG, the gene which encodes EL, was first identified in individuals with increased HDL levels. This polymorphism results in a T111I point mutation the EL protein. The association between this variant, HDL levels, and the risk of coronary artery disease (CAD) in humans has been extensively studied, but the findings have been inconsistent. In this study, we took a biochemical approach, investigating how the T111I variant affected EL activity, structure, and stability. Moreover, we tested whether the T111I variant altered the inhibition of phospholipase activity by angiopoietin-like 3 (ANGPTL3) and angiopoietin-like 4 (ANGPTL4), two known EL inhibitors. We found that neither the stability nor enzymatic activity of EL was altered by the T111I variant. Moreover, we found no difference between wild-type and T111I EL in their ability to be inhibited by ANGPTL proteins. These data suggest that any effect this variant may have on HDL-C levels or cardiovascular disease are not mediated through alterations in these functions.
Collapse
Affiliation(s)
- Kelli L Sylvers-Davie
- Department of Biochemistry and Molecular Biology, University of Iowa, 169 Newton Rd., PBDB 3326, Iowa, IA, 52242, USA
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa, IA, 52242, USA
| | - Kaleb C Bierstedt
- Department of Biochemistry and Molecular Biology, University of Iowa, 169 Newton Rd., PBDB 3326, Iowa, IA, 52242, USA
- Department of Biomedical Engineering, University of Iowa, Iowa, IA, 52242, USA
| | - Michael J Schnieders
- Department of Biochemistry and Molecular Biology, University of Iowa, 169 Newton Rd., PBDB 3326, Iowa, IA, 52242, USA
- Department of Biomedical Engineering, University of Iowa, Iowa, IA, 52242, USA
| | - Brandon S J Davies
- Department of Biochemistry and Molecular Biology, University of Iowa, 169 Newton Rd., PBDB 3326, Iowa, IA, 52242, USA.
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa, IA, 52242, USA.
| |
Collapse
|
2
|
Shirasaki T, Murai K, Ishida A, Kuroki K, Kawaguchi K, Wang Y, Yamanaka S, Yasukawa R, Kawasaki N, Li YY, Shimakami T, Sumiyadorj A, Nio K, Sugimoto S, Orita N, Takayama H, Okada H, Thi Bich PD, Iwabuchi S, Hashimoto S, Ide M, Tabata N, Ito S, Matsushima K, Yanagawa H, Yamashita T, Kaneko S, Honda M. Functional involvement of endothelial lipase in hepatitis B virus infection. Hepatol Commun 2023; 7:e0206. [PMID: 37655967 PMCID: PMC10476801 DOI: 10.1097/hc9.0000000000000206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2022] [Accepted: 04/05/2023] [Indexed: 09/02/2023] Open
Abstract
BACKGROUND HBV infection causes chronic liver disease and leads to the development of HCC. To identify host factors that support the HBV life cycle, we previously established the HC1 cell line that maintains HBV infection and identified host genes required for HBV persistence. METHODS The present study focused on endothelial lipase (LIPG), which binds to heparan sulfate proteoglycans (HSPGs) in the cell membrane. RESULTS We found HBV infection was impaired in humanized liver chimeric mouse-derived hepatocytes that were transduced with lentivirus expressing short hairpin RNA against LIPG. Long-term suppression of LIPG combined with entecavir further suppressed HBV replication. LIPG was shown to be involved in HBV attachment to the cell surface by using 2 sodium taurocholate cotransporting peptide (NTCP)-expressing cell lines, and the direct interaction of LIPG and HBV large surface protein was revealed. Heparin and heparinase almost completely suppressed the LIPG-induced increase of HBV attachment, indicating that LIPG accelerated HBV attachment to HSPGs followed by HBV entry through NTCP. Surprisingly, the attachment of a fluorescently labeled NTCP-binding preS1 probe to NTCP-expressing cells was not impaired by heparin, suggesting the HSPG-independent attachment of the preS1 probe to NTCP. Interestingly, attachment of the preS1 probe was severely impaired in LIPG knockdown or knockout cells. Inhibitors of the lipase activity of LIPG similarly impaired the attachment of the preS1 probe to NTCP-expressing cells. CONCLUSIONS LIPG participates in HBV infection by upregulating HBV attachment to the cell membrane by means of 2 possible mechanisms: increasing HBV attachment to HSPGs or facilitating HSPG-dependent or HSPG-independent HBV attachment to NTCP by its lipase activity.
Collapse
Affiliation(s)
- Takayoshi Shirasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuhisa Murai
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Atsuya Ishida
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuyuki Kuroki
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kazunori Kawaguchi
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Ying Wang
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Souma Yamanaka
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Rio Yasukawa
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Narumi Kawasaki
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Ying-Yi Li
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tetsuro Shimakami
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Ariunaa Sumiyadorj
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Kouki Nio
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Saiho Sugimoto
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Noriaki Orita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hideo Takayama
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Hikari Okada
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Phuong Doan Thi Bich
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Sadahiro Iwabuchi
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | - Shinichi Hashimoto
- Department of Molecular Pathophysiology, Institute of Advanced Medicine, Wakayama Medical University, Wakayama, Japan
| | | | | | | | - Kouji Matsushima
- Division of Molecular Regulation of Inflammatory and Immune Diseases, Research Institute for Biomedical Sciences, Tokyo University of Science, Chiba, Japan
| | | | - Taro Yamashita
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Shuichi Kaneko
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Masao Honda
- Department of Clinical Laboratory Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Gastroenterology, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| |
Collapse
|
3
|
Knapp M, Łukaszuk B, Lisowska A, Hirnle T, Górski J, Chabowski A, Mikłosz A. Multivessel Coronary Artery Disease Complicated by Diabetes Mellitus Has a Relatively Small Effect on Endothelial and Lipoprotein Lipases Expression in the Human Atrial Myocardium and Coronary Perivascular Adipose Tissue. Int J Mol Sci 2023; 24:13552. [PMID: 37686357 PMCID: PMC10487606 DOI: 10.3390/ijms241713552] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 08/28/2023] [Accepted: 08/30/2023] [Indexed: 09/10/2023] Open
Abstract
Endothelial (EL) and lipoprotein (LPL) lipases are enzymes involved in lipoproteins metabolism and formation of atherosclerosis, a pathological feature of coronary artery disease (CAD). This paper examines the role of the lipases in the right atrial appendage (RAA) and coronary perivascular adipose tissue (PVAT) of patients with CAD alone or with accompanying diabetes. Additionally, correlation analysis for plasma concentration of the lipases, apolipoproteins (ApoA-ApoJ) and blood lipids (Chol, HDL-C, LDL-C, TAG) was performed. We observed that CAD had little effect on the lipases gene/protein levels in the RAA, while their transcript content was elevated in the PVAT of diabetic CAD patients. Interestingly, the RAA was characterized by higher expression of EL/LPL (EL: +1-fold for mRNA, +5-fold for protein; LPL: +2.8-fold for mRNA, +12-fold for protein) compared to PVAT. Furthermore, ApoA1 plasma concentration was decreased, whereas ApoC1 and ApoH were increased in the patients with CAD and/or diabetes. The concentrations of ApoC3 and ApoD were strongly positively correlated with TAG content in the blood, and the same was true for ApoB with respect to LDL-C and total cholesterol. Although plasma concentrations of EL/LPL were elevated in the patients with diabetes, CAD alone had little effect on blood, myocardial and perivascular fat expression of the lipases.
Collapse
Affiliation(s)
- Małgorzata Knapp
- Department of Cardiology, Medical University of Bialystok, 15-089 Bialystok, Poland; (M.K.); (A.L.); (T.H.)
| | - Bartłomiej Łukaszuk
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2C Street, 15-222 Bialystok, Poland; (B.L.); (A.C.)
| | - Anna Lisowska
- Department of Cardiology, Medical University of Bialystok, 15-089 Bialystok, Poland; (M.K.); (A.L.); (T.H.)
| | - Tomasz Hirnle
- Department of Cardiology, Medical University of Bialystok, 15-089 Bialystok, Poland; (M.K.); (A.L.); (T.H.)
| | - Jan Górski
- Faculty of Health Sciences, University of Lomza, 18-400 Lomza, Poland;
| | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2C Street, 15-222 Bialystok, Poland; (B.L.); (A.C.)
| | - Agnieszka Mikłosz
- Department of Physiology, Medical University of Bialystok, Mickiewicza 2C Street, 15-222 Bialystok, Poland; (B.L.); (A.C.)
| |
Collapse
|
4
|
Sylvers-Davie KL, Bierstedt KC, Schnieders MJ, Davies BSJ. Endothelial Lipase Variant, T111I, Does Not Alter Inhibition by Angiopoietin-like Proteins. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.18.553740. [PMID: 37693454 PMCID: PMC10491130 DOI: 10.1101/2023.08.18.553740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
High levels of HDL-C are correlated with a decreased risk of cardiovascular disease. HDL-C levels are modulated in part by the secreted phospholipase, endothelial lipase (EL), which hydrolyzes the phospholipids of HDL and decreases circulating HDL-C concentrations. A 584C/T polymorphism in LIPG, the gene which encodes EL, was first identified in individuals with increased HDL levels. This polymorphism results in a T111I point mutation the EL protein. The association between this variant, HDL levels, and the risk of coronary artery disease (CAD) in humans has been extensively studied, but the findings have been inconsistent. In this study, we took a biochemical approach, investigating how the T111I variant affected EL activity, structure, and stability. Moreover, we tested whether the T111I variant altered the inhibition of phospholipase activity by angiopoietin-like 3 (ANGPTL3) and angiopoietin-like 4 (ANGPTL4), two known EL inhibitors. We found that neither the stability nor enzymatic activity of EL was altered by the T111I variant. Moreover, we found no difference between wild-type and T111I EL in their ability to be inhibited by ANGPTL proteins. These data suggest that any effect this variant may have on HDL-C levels or cardiovascular disease are not mediated through alterations in these functions.
Collapse
Affiliation(s)
- Kelli L. Sylvers-Davie
- Department of Biochemistry and Molecular Biology, University of Iowa, Iowa City, IA 52242
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA 52242
| | - Kaleb C. Bierstedt
- Department of Biochemistry and Molecular Biology, University of Iowa, Iowa City, IA 52242
- Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242
| | - Michael J. Schnieders
- Department of Biochemistry and Molecular Biology, University of Iowa, Iowa City, IA 52242
- Department of Biomedical Engineering, University of Iowa, Iowa City, IA 52242
| | - Brandon S. J. Davies
- Department of Biochemistry and Molecular Biology, University of Iowa, Iowa City, IA 52242
- Fraternal Order of Eagles Diabetes Research Center, University of Iowa, Iowa City, IA 52242
| |
Collapse
|
5
|
Mi H, Hu F, Gebeyew K, Cheng Y, Du R, Gao M, He Z, Tan Z. Genome wide transcriptome analysis provides bases on hepatic lipid metabolism disorder affected by increased dietary grain ratio in fattening lambs. BMC Genomics 2023; 24:364. [PMID: 37386405 DOI: 10.1186/s12864-023-09465-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 06/19/2023] [Indexed: 07/01/2023] Open
Abstract
BACKGROUND The liver is a principal metabolic organ and has a major role in regulating lipid metabolism. With the development of rapidly fattening livestock in the modern breeding industry, the incidence of hepatic steatosis and accumulation in animals was significantly increased. However, the molecular mechanisms responsible for hepatic lipid metabolic disturbances in a high concentrate diet remain unclear. The objective of this study was to evaluate the effects of increasing concentrate level in a fattening lamb diet on biochemical indices, hepatic triglycerides (TG) concentration, and hepatic transcriptomic profiles. In the present study, 42 weaned lambs (about 3 ± 0.3 months old) were randomly assigned to the GN60 group (60% concentrate of dry matter, GN60, n = 21) or GN70 group (70% concentrate of dry matter, n = 21) for a 3-months feeding trial. RESULTS No difference was observed in the growth performance or plasma biochemical parameters between the GN60 group and the GN70 group. The hepatic TG concentration was higher in the GN70 group than GN60 group (P < 0.05). Hepatic transcriptomic analysis showed that there were 290 differentially expressed genes identified between GN60 and GN70 groups, with 125 genes up-regulated and 165 genes down-regulated in the GN70 group. The enriched Gene Ontology (GO) items and KEGG pathways and protein-protein interaction (PPI) network of differentially expressed genes (DEGs) revealed that the majority of enriched pathways were related to lipid metabolism. Further analysis revealed that the fatty acid synthesis was up-regulated, while fatty acid transport, oxidation, and TG degradation were down-regulated in the GN70 group when compared with the GN60 group. CONCLUSIONS These results indicated that GN70 induced excess lipid deposition in the liver of lambs during the fattening period, with high synthesis rates and low degradation rates of TG. The identified mechanisms may help understand hepatic metabolism in lambs with a high concentrate diet and provide insight into decreasing the risk of liver metabolism disorder in animals.
Collapse
Affiliation(s)
- Hui Mi
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, The Chinese Academy of Sciences, Changsha, 410125, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fan Hu
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, The Chinese Academy of Sciences, Changsha, 410125, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Kefyalew Gebeyew
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, The Chinese Academy of Sciences, Changsha, 410125, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yan Cheng
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, The Chinese Academy of Sciences, Changsha, 410125, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Ruiping Du
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot, Inner Mongolia, 010031, China
| | - Min Gao
- Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences, Hohhot, Inner Mongolia, 010031, China
| | - Zhixiong He
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, The Chinese Academy of Sciences, Changsha, 410125, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
| | - Zhiliang Tan
- CAS Key Laboratory for Agro-Ecological Processes in Subtropical Region, National Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry Production, Hunan Provincial Engineering Research Center for Healthy Livestock and Poultry Production, Institute of Subtropical Agriculture, South-Central Experimental Station of Animal Nutrition and Feed Science in Ministry of Agriculture, The Chinese Academy of Sciences, Changsha, 410125, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| |
Collapse
|
6
|
Klobučar I, Klobučar L, Lechleitner M, Trbušić M, Pregartner G, Berghold A, Habisch H, Madl T, Frank S, Degoricija V. Associations between Endothelial Lipase and Apolipoprotein B-Containing Lipoproteins Differ in Healthy Volunteers and Metabolic Syndrome Patients. Int J Mol Sci 2023; 24:10681. [PMID: 37445857 PMCID: PMC10341652 DOI: 10.3390/ijms241310681] [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: 05/17/2023] [Revised: 06/23/2023] [Accepted: 06/25/2023] [Indexed: 07/15/2023] Open
Abstract
The association between serum levels of endothelial lipase (EL) and the serum levels and composition of apolipoprotein B (apoB)-containing lipoproteins in healthy subjects and patients with metabolic syndrome (MS) remained unexplored. Therefore, in the present study, we determined the serum levels and lipid content of apoB-containing lipoproteins using nuclear magnetic resonance (NMR) spectroscopy and examined their association with EL serum levels in healthy volunteers (HVs) and MS patients. EL was significantly negatively correlated with the serum levels of cholesterol in large very low-density lipoprotein (VLDL) particles, as well as with total-cholesterol-, free-cholesterol-, triglyceride-, and phospholipid-contents of VLDL and intermediate-density lipoprotein particles in MS patients but not in HVs. In contrast, EL serum levels were significantly positively correlated with the serum levels of apoB, triglycerides, and phospholipids in large low-density lipoprotein particles in HVs but not in MS patients. EL serum levels as well as the serum levels and lipid content of the majority of apoB-containing lipoprotein subclasses were markedly different in MS patients compared with HVs. We conclude that EL serum levels are associated with the serum levels and lipid content of apoB-containing lipoproteins and that these associations are markedly affected by MS.
Collapse
Affiliation(s)
- Iva Klobučar
- Department of Cardiology, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia; (I.K.); (M.T.)
| | - Lucija Klobučar
- Department of Medicine, University Hospital Centre Osijek, 31000 Osijek, Croatia;
| | - Margarete Lechleitner
- Gottfried Schatz Research Center, Department of Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria; (M.L.); (H.H.); (T.M.)
| | - Matias Trbušić
- Department of Cardiology, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia; (I.K.); (M.T.)
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
| | - Gudrun Pregartner
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, 8036 Graz, Austria; (G.P.); (A.B.)
| | - Andrea Berghold
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, 8036 Graz, Austria; (G.P.); (A.B.)
| | - Hansjörg Habisch
- Gottfried Schatz Research Center, Department of Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria; (M.L.); (H.H.); (T.M.)
| | - Tobias Madl
- Gottfried Schatz Research Center, Department of Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria; (M.L.); (H.H.); (T.M.)
- BioTechMed-Graz, 8010 Graz, Austria
| | - Saša Frank
- Gottfried Schatz Research Center, Department of Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria; (M.L.); (H.H.); (T.M.)
- BioTechMed-Graz, 8010 Graz, Austria
| | - Vesna Degoricija
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia;
- Department of Medicine, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia
| |
Collapse
|
7
|
Klobučar I, Stadler JT, Klobučar L, Lechleitner M, Trbušić M, Pregartner G, Berghold A, Habisch H, Madl T, Marsche G, Frank S, Degoricija V. Associations between Endothelial Lipase, High-Density Lipoprotein, and Endothelial Function Differ in Healthy Volunteers and Metabolic Syndrome Patients. Int J Mol Sci 2023; 24:2073. [PMID: 36768410 PMCID: PMC9916974 DOI: 10.3390/ijms24032073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Metabolic syndrome (MS) is characterized by endothelial- and high-density lipoprotein (HDL) dysfunction and increased endothelial lipase (EL) serum levels. We examined the associations between EL serum levels, HDL (serum levels, lipid content, and function), and endothelial function in healthy volunteers (HV) and MS patients. Flow-mediated dilation (FMD), nitroglycerin-mediated dilation (NMD), serum levels of HDL subclasses (measured by nuclear magnetic resonance (NMR) spectroscopy), and EL serum levels differed significantly between HV and MS patients. The serum levels of triglycerides in large HDL particles were significantly positively correlated with FMD and NMD in HV, but not in MS patients. Cholesterol (C) and phospholipid (PL) contents of large HDL particles, calculated as HDL1-C/HDL1-apoA-I and HDL1-PL/HDL1-apoA-I, respectively, were significantly negatively correlated with FMD in HV, but not in MS patients. Cholesterol efflux capacity and arylesterase activity of HDL, as well as EL, were correlated with neither FMD nor NMD. EL was significantly negatively correlated with HDL-PL/HDL-apoA-I in HV, but not in MS patients, and with serum levels of small dense HDL containing apolipoprotein A-II in MS patients, but not in HV. We conclude that MS modulates the association between HDL and endothelial function, as well as between EL and HDL. HDL cholesterol efflux capacity and arylesterase activity, as well as EL serum levels, are not associated with endothelial function in HV or MS patients.
Collapse
Affiliation(s)
- Iva Klobučar
- Department of Cardiology, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia
| | - Julia T. Stadler
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria
| | - Lucija Klobučar
- Department of Medicine, University Hospital Centre Osijek, 31000 Osijek, Croatia
| | - Margarete Lechleitner
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria
| | - Matias Trbušić
- Department of Cardiology, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Gudrun Pregartner
- Institute for Medical Informatics, Statistics und Documentation, Medical University of Graz, 8036 Graz, Austria
| | - Andrea Berghold
- Institute for Medical Informatics, Statistics und Documentation, Medical University of Graz, 8036 Graz, Austria
| | - Hansjörg Habisch
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria
| | - Tobias Madl
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria
- BioTechMed-Graz, 8010 Graz, Austria
| | - Gunther Marsche
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, 8010 Graz, Austria
- BioTechMed-Graz, 8010 Graz, Austria
| | - Saša Frank
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, 8010 Graz, Austria
- BioTechMed-Graz, 8010 Graz, Austria
| | - Vesna Degoricija
- School of Medicine, University of Zagreb, 10000 Zagreb, Croatia
- Department of Medicine, Sisters of Charity University Hospital Centre, 10000 Zagreb, Croatia
| |
Collapse
|
8
|
Wang S, Chen Z, Lv H, wang C, Wei H, Yu J. LIPG is a novel prognostic biomarker and correlated with immune infiltrates in lung adenocarcinoma. J Clin Lab Anal 2022; 37:e24824. [PMID: 36572999 PMCID: PMC9833968 DOI: 10.1002/jcla.24824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/03/2022] [Accepted: 12/14/2022] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Although many biomarkers for lung adenocarcinoma (LUAD) have been identified, their specificity and sensitivity remain unsatisfactory. Endothelial lipase gene (LIPG) plays an important role in a variety of cancers, but its role in lung adenocarcinoma remains unclear. METHODS TCGA, GEO, K-M plotter, CIBERSORT, GSEA, HPA, and GDSC were used to analyze LIPG in LUAD. Data analysis was mainly achieved by R 4.0.3. RESULTS The expression of LIPG in LUAD tissues was higher than that in adjacent normal tissues, especially in women, patients aged >65 years, and those with lymph node metastasis. High expression predicted a poor prognosis. The results of enrichment analysis suggest that LIPG may exert profound effects on the development of LUAD through multiple stages of lipid metabolism and immune system regulation. In addition, LIPG expression was significantly correlated with the expression levels of multiple immune checkpoint genes and the abundance of multiple immune infiltrates, including the activated memory CD4 T cell, M1 macrophage, neutrophil, plasma cells, and T follicular helper (Tfh) cells in the LUAD microenvironment content. At the same time, patients with high LIPG expression respond well to a variety of antitumor drugs and have a low rate of drug resistance. CONCLUSIONS LIPG is a prognostic marker and is associated with lipid metabolism and immune infiltration in LUAD.
Collapse
Affiliation(s)
- Shan Wang
- Cancer Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Zhaoxin Chen
- Cancer Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Hongwei Lv
- Cancer Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Cong wang
- Cancer Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Huamin Wei
- Department of Traditional Chinese Medicine, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| | - Jing Yu
- Cancer Center, Beijing Friendship HospitalCapital Medical UniversityBeijingChina
| |
Collapse
|
9
|
Arias-Alpizar G, Papadopoulou P, Rios X, Pulagam KR, Moradi MA, Pattipeiluhu R, Bussmann J, Sommerdijk N, Llop J, Kros A, Campbell F. Phase-Separated Liposomes Hijack Endogenous Lipoprotein Transport and Metabolism Pathways to Target Subsets of Endothelial Cells In Vivo. Adv Healthc Mater 2022; 12:e2202709. [PMID: 36565694 DOI: 10.1002/adhm.202202709] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 12/14/2022] [Indexed: 12/25/2022]
Abstract
Plasma lipid transport and metabolism are essential to ensure correct cellular function throughout the body. Dynamically regulated in time and space, the well-characterized mechanisms underpinning plasma lipid transport and metabolism offers an enticing, but as yet underexplored, rationale to design synthetic lipid nanoparticles with inherent cell/tissue selectivity. Herein, a systemically administered liposome formulation, composed of just two lipids, that is capable of hijacking a triglyceride lipase-mediated lipid transport pathway resulting in liposome recognition and uptake within specific endothelial cell subsets is described. In the absence of targeting ligands, liposome-lipase interactions are mediated by a unique, phase-separated ("parachute") liposome morphology. Within the embryonic zebrafish, selective liposome accumulation is observed at the developing blood-brain barrier. In mice, extensive liposome accumulation within the liver and spleen - which is reduced, but not eliminated, following small molecule lipase inhibition - supports a role for endothelial lipase but highlights these liposomes are also subject to significant "off-target" by reticuloendothelial system organs. Overall, these compositionally simplistic liposomes offer new insights into the discovery and design of lipid-based nanoparticles that can exploit endogenous lipid transport and metabolism pathways to achieve cell selective targeting in vivo.
Collapse
Affiliation(s)
- Gabriela Arias-Alpizar
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands.,Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Panagiota Papadopoulou
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Xabier Rios
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Krishna Reddy Pulagam
- CIC biomaGUNE, Basque Research and Technology Alliance (BRTA), San Sebastián, 20014, Spain
| | - Mohammad-Amin Moradi
- Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, The Netherlands
| | - Roy Pattipeiluhu
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Jeroen Bussmann
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands.,Division of BioTherapeutics, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Nico Sommerdijk
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, 6525, The Netherlands.,Electron Microscopy Centre, Radboudumc Technology Center Microscopy, Radboud University Medical Center, Geert Grooteplein Zuid 28, Nijmegen, 6525, The Netherlands
| | - Jordi Llop
- Materials and Interface Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, P.O. Box 513, Eindhoven, 5600, The Netherlands
| | - Alexander Kros
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| | - Frederick Campbell
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Leiden University, P.O. Box 9502, Leiden, 2300, The Netherlands
| |
Collapse
|
10
|
Reisinger AC, Schuller M, Sourij H, Stadler JT, Hackl G, Eller P, Marsche G. Impact of Sepsis on High-Density Lipoprotein Metabolism. Front Cell Dev Biol 2022; 9:795460. [PMID: 35071235 PMCID: PMC8766710 DOI: 10.3389/fcell.2021.795460] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 12/13/2021] [Indexed: 12/29/2022] Open
Abstract
Background: High-density lipoproteins (HDL) are thought to play a protective role in sepsis through several mechanisms, such as promotion of steroid synthesis, clearing bacterial toxins, protection of the endothelial barrier, and antioxidant/inflammatory activities. However, HDL levels decline rapidly during sepsis, but the contributing mechanisms are poorly understood. Methods/Aim: In the present study, we investigated enzymes involved in lipoprotein metabolism in sepsis and non-sepsis patients admitted to the intensive care unit (ICU). Results: In 53 ICU sepsis and 25 ICU non-sepsis patients, we observed significant differences in several enzymes involved in lipoprotein metabolism. Lecithin-cholesterol acyl transferase (LCAT) activity, LCAT concentration, and cholesteryl transfer protein (CETP) activity were significantly lower, whereas phospholipid transfer activity protein (PLTP) and endothelial lipase (EL) were significantly higher in sepsis patients compared to non-sepsis patients. In addition, serum amyloid A (SAA) levels were increased 10-fold in sepsis patients compared with non-sepsis patients. Furthermore, we found that LCAT activity was significantly associated with ICU and 28-day mortality whereas SAA levels, representing a strong inflammatory marker, did not associate with mortality outcomes. Conclusion: We provide novel data on the rapid and robust changes in HDL metabolism during sepsis. Our results clearly highlight the critical role of specific metabolic pathways and enzymes in sepsis pathophysiology that may lead to novel therapeutics.
Collapse
Affiliation(s)
- Alexander C Reisinger
- Department of Internal Medicine, Intensive Care Unit, Medical University of Graz, Graz, Austria
| | - Max Schuller
- Department of Internal Medicine, Division of Nephrology, Medical University of Graz, Graz, Austria
| | - Harald Sourij
- Department of Internal Medicine, Division of Endocrinology and Diabetology, Interdisciplinary Metabolic Medicine Trials Unit, Medical University of Graz, Graz, Austria
| | - Julia T Stadler
- Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Division of Pharmacology, Medical University of Graz, Graz, Austria
| | - Gerald Hackl
- Department of Internal Medicine, Intensive Care Unit, Medical University of Graz, Graz, Austria
| | - Philipp Eller
- Department of Internal Medicine, Intensive Care Unit, Medical University of Graz, Graz, Austria
| | - Gunther Marsche
- Otto Loewi Research Center for Vascular Biology, Immunology and Inflammation, Division of Pharmacology, Medical University of Graz, Graz, Austria
| |
Collapse
|
11
|
Khetarpal SA, Vitali C, Levin MG, Klarin D, Park J, Pampana A, Millar JS, Kuwano T, Sugasini D, Subbaiah PV, Billheimer JT, Natarajan P, Rader DJ. Endothelial lipase mediates efficient lipolysis of triglyceride-rich lipoproteins. PLoS Genet 2021; 17:e1009802. [PMID: 34543263 PMCID: PMC8483387 DOI: 10.1371/journal.pgen.1009802] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 09/30/2021] [Accepted: 09/02/2021] [Indexed: 11/18/2022] Open
Abstract
Triglyceride-rich lipoproteins (TRLs) are circulating reservoirs of fatty acids used as vital energy sources for peripheral tissues. Lipoprotein lipase (LPL) is a predominant enzyme mediating triglyceride (TG) lipolysis and TRL clearance to provide fatty acids to tissues in animals. Physiological and human genetic evidence support a primary role for LPL in hydrolyzing TRL TGs. We hypothesized that endothelial lipase (EL), another extracellular lipase that primarily hydrolyzes lipoprotein phospholipids may also contribute to TRL metabolism. To explore this, we studied the impact of genetic EL loss-of-function on TRL metabolism in humans and mice. Humans carrying a loss-of-function missense variant in LIPG, p.Asn396Ser (rs77960347), demonstrated elevated plasma TGs and elevated phospholipids in TRLs, among other lipoprotein classes. Mice with germline EL deficiency challenged with excess dietary TG through refeeding or a high-fat diet exhibited elevated TGs, delayed dietary TRL clearance, and impaired TRL TG lipolysis in vivo that was rescued by EL reconstitution in the liver. Lipidomic analyses of postprandial plasma from high-fat fed Lipg-/- mice demonstrated accumulation of phospholipids and TGs harboring long-chain polyunsaturated fatty acids (PUFAs), known substrates for EL lipolysis. In vitro and in vivo, EL and LPL together promoted greater TG lipolysis than either extracellular lipase alone. Our data positions EL as a key collaborator of LPL to mediate efficient lipolysis of TRLs in humans and mice.
Collapse
Affiliation(s)
- Sumeet A. Khetarpal
- Departments of Medicine and Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America,Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, United States of America
| | - Cecilia Vitali
- Departments of Medicine and Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Michael G. Levin
- Division of Cardiovascular Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America,Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America,Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania, United States of America
| | - Derek Klarin
- Boston VA Healthcare System, Boston, Massachusetts, United States of America,Center for Genomic Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America
| | - Joseph Park
- Departments of Medicine and Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Akhil Pampana
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, United States of America,Center for Genomic Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America,Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - John S. Millar
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Takashi Kuwano
- Departments of Medicine and Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Dhavamani Sugasini
- Section of Endocrinology, Department of Medicine, University of Illinois at Chicago; Jesse Brown VA Medical Center, Chicago, Illinois, United States of America
| | - Papasani V. Subbaiah
- Section of Endocrinology, Department of Medicine, University of Illinois at Chicago; Jesse Brown VA Medical Center, Chicago, Illinois, United States of America
| | - Jeffrey T. Billheimer
- Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America
| | - Pradeep Natarajan
- Cardiovascular Research Center, Massachusetts General Hospital, Boston, Massachusetts, United States of America,Center for Genomic Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts, United States of America,Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, Massachusetts, United States of America,Department of Medicine, Harvard Medical School, Boston, Massachusetts, United States of America
| | - Daniel J. Rader
- Departments of Medicine and Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, United States of America,* E-mail:
| |
Collapse
|
12
|
Sylvers-Davie KL, Segura-Roman A, Salvi AM, Schache KJ, Davies BSJ. Angiopoietin-like 3 inhibition of endothelial lipase is not modulated by angiopoietin-like 8. J Lipid Res 2021; 62:100112. [PMID: 34461133 PMCID: PMC8456055 DOI: 10.1016/j.jlr.2021.100112] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 08/10/2021] [Accepted: 08/24/2021] [Indexed: 01/02/2023] Open
Abstract
High plasma triglyceride (TG) levels and low HDL-C levels are risk factors for atherosclerosis and cardiovascular disease. Both plasma TG and HDL-C levels are regulated in part by the circulating inhibitor, angiopoietin-like 3 (ANGPTL3). ANGPTL3 inhibits the phospholipase, endothelial lipase (EL), which hydrolyzes the phospholipids of HDL, thus decreasing plasma HDL levels. ANGPTL3 also inhibits LPL, the lipase primarily responsible for the clearance of TGs from the circulation. Previous studies have shown that ANGPTL3 requires complex formation with the related ANGPTL protein, angiopoietin-like 8 (ANGPTL8), to efficiently inhibit LPL, but the role of ANGPTL8 in EL inhibition is not known. In this study, we characterized inhibition and binding of EL by ANGPTL3 and investigated the role of ANGPTL8 in EL inhibition. We found that inhibition of EL by ANGPTL3 was dose dependent and temperature dependent. Interestingly, this inhibition was diminished when EL was bound to endothelial cells or in the presence of heparin. Unlike previous findings with LPL, we found that ANGPTL8 did not significantly alter the binding or the inhibition of EL by ANGPTL3. In addition, we found that a common ANGPTL8 variant, which encodes an R59W mutation, altered the ability of ANGPTL3 to bind and inhibit LPL but not EL. Together, our data indicate that ANGPTL8 is not necessary for EL inhibition. We conclude that ANGPTL8 is specific for the regulation of TG-rich lipoproteins through the LPL pathway and that therapeutically targeting ANGPTL8 for the treatment of hypertriglyceridemia or cardiovascular disease may have different outcomes than targeting ANGPTL3.
Collapse
Affiliation(s)
- Kelli L Sylvers-Davie
- Department of Biochemistry and Molecular Biology, Fraternal Order of Eagles Diabetes Research Center, and Obesity Research and Education Initiative, University of Iowa, Iowa City, IA, USA
| | - Ashley Segura-Roman
- Department of Biochemistry and Molecular Biology, Fraternal Order of Eagles Diabetes Research Center, and Obesity Research and Education Initiative, University of Iowa, Iowa City, IA, USA
| | - Alicia M Salvi
- Department of Biochemistry and Molecular Biology, Fraternal Order of Eagles Diabetes Research Center, and Obesity Research and Education Initiative, University of Iowa, Iowa City, IA, USA
| | - Kylie J Schache
- Department of Biochemistry and Molecular Biology, Fraternal Order of Eagles Diabetes Research Center, and Obesity Research and Education Initiative, University of Iowa, Iowa City, IA, USA
| | - Brandon S J Davies
- Department of Biochemistry and Molecular Biology, Fraternal Order of Eagles Diabetes Research Center, and Obesity Research and Education Initiative, University of Iowa, Iowa City, IA, USA.
| |
Collapse
|
13
|
The Importance of Lipoprotein Lipase Regulation in Atherosclerosis. Biomedicines 2021; 9:biomedicines9070782. [PMID: 34356847 PMCID: PMC8301479 DOI: 10.3390/biomedicines9070782] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 07/02/2021] [Accepted: 07/04/2021] [Indexed: 02/07/2023] Open
Abstract
Lipoprotein lipase (LPL) plays a major role in the lipid homeostasis mainly by mediating the intravascular lipolysis of triglyceride rich lipoproteins. Impaired LPL activity leads to the accumulation of chylomicrons and very low-density lipoproteins (VLDL) in plasma, resulting in hypertriglyceridemia. While low-density lipoprotein cholesterol (LDL-C) is recognized as a primary risk factor for atherosclerosis, hypertriglyceridemia has been shown to be an independent risk factor for cardiovascular disease (CVD) and a residual risk factor in atherosclerosis development. In this review, we focus on the lipolysis machinery and discuss the potential role of triglycerides, remnant particles, and lipolysis mediators in the onset and progression of atherosclerotic cardiovascular disease (ASCVD). This review details a number of important factors involved in the maturation and transportation of LPL to the capillaries, where the triglycerides are hydrolyzed, generating remnant lipoproteins. Moreover, LPL and other factors involved in intravascular lipolysis are also reported to impact the clearance of remnant lipoproteins from plasma and promote lipoprotein retention in capillaries. Apolipoproteins (Apo) and angiopoietin-like proteins (ANGPTLs) play a crucial role in regulating LPL activity and recent insights into LPL regulation may elucidate new pharmacological means to address the challenge of hypertriglyceridemia in atherosclerosis development.
Collapse
|
14
|
Mikłosz A, Łukaszuk B, Chabowski A, Górski J. Treadmill Running Changes Endothelial Lipase Expression: Insights from Gene and Protein Analysis in Various Striated Muscle Tissues and Serum. Biomolecules 2021; 11:biom11060906. [PMID: 34204548 PMCID: PMC8234415 DOI: 10.3390/biom11060906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 06/04/2021] [Accepted: 06/16/2021] [Indexed: 11/16/2022] Open
Abstract
Endothelial lipase (EL) is an enzyme capable of HDL phospholipids hydrolysis. Its action leads to a reduction in the serum high-density lipoprotein concentration, and thus, it exerts a pro-atherogenic effect. This study examines the impact of a single bout exercise on the gene and protein expression of the EL in skeletal muscles composed of different fiber types (the soleus—mainly type I, the red gastrocnemius—mostly IIA, and the white gastrocnemius—predominantly IIX fibers), as well as the diaphragm, and the heart. Wistar rats were subjected to a treadmill run: (1) t = 30 [min], V = 18 [m/min]; (2) t = 30 [min], V = 28 [m/min]; (3) t = 120 [min], V = 18 [m/min] (designated: M30, F30, and M120, respectively). We established EL expression in the total muscle homogenates in sedentary animals. Resting values could be ordered with the decreasing EL protein expression as follows: endothelium of left ventricle > diaphragm > red gastrocnemius > right ventricle > soleus > white gastrocnemius. Furthermore, we observed that even a single bout of exercise was capable of inducing changes in the mRNA and protein level of EL, with a clearer pattern observed for the former. After 30 min of running at either exercise intensity, the expression of EL transcript in all the cardiovascular components of muscles tested, except the soleus, was reduced in comparison to the respective sedentary control. The protein content of EL varied with the intensity and/or duration of the run in the studied whole tissue homogenates. The observed differences between EL expression in vascular beds of muscles may indicate the muscle-specific role of the lipase.
Collapse
Affiliation(s)
- Agnieszka Mikłosz
- Department of Physiology, Medical University of Bialystok, 12-222 Bialystok, Poland; (B.Ł.); (A.C.)
- Correspondence: ; Tel.: +48-85-746-55-85
| | - Bartłomiej Łukaszuk
- Department of Physiology, Medical University of Bialystok, 12-222 Bialystok, Poland; (B.Ł.); (A.C.)
| | - Adrian Chabowski
- Department of Physiology, Medical University of Bialystok, 12-222 Bialystok, Poland; (B.Ł.); (A.C.)
| | - Jan Górski
- Department of Basic Sciences, Lomza State University of Applied Sciences, 18-400 Lomza, Poland;
| |
Collapse
|
15
|
Gago-Dominguez M, Redondo CM, Calaza M, Matabuena M, Bermudez MA, Perez-Fernandez R, Torres-Español M, Carracedo Á, Castelao JE. LIPG endothelial lipase and breast cancer risk by subtypes. Sci Rep 2021; 11:10436. [PMID: 34001944 PMCID: PMC8129130 DOI: 10.1038/s41598-021-89669-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 04/21/2021] [Indexed: 11/09/2022] Open
Abstract
Experimental data showed that endothelial lipase (LIPG) is a crucial player in breast cancer. However, very limited data exists on the role of LIPG on the risk of breast cancer in humans. We examined the LIPG-breast cancer association within our population-based case-control study from Galicia, Spain, BREOGAN (BREast Oncology GAlicia Network). Plasma LIPG and/or OxLDL were measured on 114 breast cancer cases and 82 controls from our case-control study, and were included in the present study. The risk of breast cancer increased with increasing levels of LIPG (multivariable OR for the highest category (95% CI) 2.52 (1.11-5.81), P-trend = 0.037). The LIPG-breast cancer association was restricted to Pre-menopausal breast cancer (Multivariable OR for the highest LIPG category (95% CI) 4.76 (0.94-28.77), P-trend = 0.06, and 1.79 (0.61-5.29), P-trend = 0.372, for Pre-menopausal and Post-menopausal breast cancer, respectively). The LIPG-breast cancer association was restricted to Luminal A breast cancers (Multivariable OR for the highest LIPG category (95% CI) 3.70 (1.42-10.16), P-trend = 0.015, and 2.05 (0.63-7.22), P-trend = 0.311, for Luminal A and non-Luminal A breast cancers, respectively). Subset analysis only based on HER2 receptor indicated that the LIPG-breast cancer relationship was restricted to HER2-negative breast cancers (Multivariable OR for the highest LIPG category (95% CI) 4.39 (1.70-12.03), P-trend = 0.012, and 1.10 (0.28-4.32), P-trend = 0.745, for HER2-negative and HER2-positive tumors, respectively). The LIPG-breast cancer association was restricted to women with high total cholesterol levels (Multivariable OR for the highest LIPG category (95% CI) 6.30 (2.13-20.05), P-trend = 0.018, and 0.65 (0.11-3.28), P-trend = 0.786, among women with high and low cholesterol levels, respectively). The LIPG-breast cancer association was also restricted to non-postpartum breast cancer (Multivariable OR for the highest LIPG category (95% CI) 3.83 (1.37-11.39), P-trend = 0.003, and 2.35 (0.16-63.65), P-trend = 0.396, for non-postpartum and postpartum breast cancer, respectively), although we lacked precision. The LIPG-breast cancer association was more pronounced among grades II and III than grade I breast cancers (Multivariable ORs for the highest category of LIPG (95% CI) 2.73 (1.02-7.69), P-trend = 0.057, and 1.90 (0.61-6.21), P-trend = 0.170, for grades II and III, and grade I breast cancers, respectively). No association was detected for OxLDL levels and breast cancer (Multivariable OR for the highest versus the lowest category (95% CI) 1.56 (0.56-4.32), P-trend = 0.457).
Collapse
Affiliation(s)
- Manuela Gago-Dominguez
- Galician Public Foundation of Genomic Medicine (FPGMX), Servicio Galego de Saúde (SERGAS), Santiago de Compostela, Spain.
- Genomic Medicine Group, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Centro en Red de Enfermedades Raras (CIBERER), University of Santiago de Compostela, Santiago de Compostela, Spain.
- Galician Public Foundation of Genomic Medicine (FPGMX), Genomic Medicine Group, International Cancer Genetics and Epidemiology Group, Health Research Institute of Santiago (IDIS), Santiago de Compostela, Spain.
| | - Carmen M Redondo
- Oncology and Genetics Unit, Instituto de Investigación Sanitaria Galicia Sur, Vigo, Spain
| | - Manuel Calaza
- Conselleria de Educación, Xunta de Galicia, Santiago de Compostela, Spain
| | - Marcos Matabuena
- Centro de Investigación en Tecnoloxías da Información (CiTIUS), University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Maria A Bermudez
- Department of Biology, Faculty of Science, University of A Coruña, A Coruña, Spain
| | - Roman Perez-Fernandez
- Department of Physiology and Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), University of Santiago de Compostela, Santiago de Compostela, Spain
| | - María Torres-Español
- Galician Public Foundation of Genomic Medicine (FPGMX), Servicio Galego de Saúde (SERGAS), Santiago de Compostela, Spain
- Genomic Medicine Group, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Centro en Red de Enfermedades Raras (CIBERER), University of Santiago de Compostela, Santiago de Compostela, Spain
| | - Ángel Carracedo
- Galician Public Foundation of Genomic Medicine (FPGMX), Servicio Galego de Saúde (SERGAS), Santiago de Compostela, Spain
- Genomic Medicine Group, Center for Research in Molecular Medicine and Chronic Diseases (CIMUS), Centro en Red de Enfermedades Raras (CIBERER), University of Santiago de Compostela, Santiago de Compostela, Spain
| | - J Esteban Castelao
- Oncology and Genetics Unit, Instituto de Investigación Sanitaria Galicia Sur, Vigo, Spain
| |
Collapse
|
16
|
Schaltenberg N, John C, Heine M, Haumann F, Rinninger F, Scheja L, Heeren J, Worthmann A. Endothelial Lipase Is Involved in Cold-Induced High-Density Lipoprotein Turnover and Reverse Cholesterol Transport in Mice. Front Cardiovasc Med 2021; 8:628235. [PMID: 33748195 PMCID: PMC7973023 DOI: 10.3389/fcvm.2021.628235] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 01/29/2021] [Indexed: 11/17/2022] Open
Abstract
The physiologic activation of thermogenic brown and white adipose tissues (BAT/WAT) by cold exposure triggers heat production by adaptive thermogenesis, a process known to ameliorate hyperlipidemia and protect from atherosclerosis. Mechanistically, it has been shown that thermogenic activation increases lipoprotein lipase (LPL)-dependent hydrolysis of triglyceride-rich lipoproteins (TRL) and accelerates the generation of cholesterol-enriched remnants and high-density lipoprotein (HDL), which promotes cholesterol flux from the periphery to the liver. HDL is also subjected to hydrolysis by endothelial lipase (EL) (encoded by LIPG). Genome-wide association studies have identified various variants of EL that are associated with altered HDL cholesterol levels. However, a potential role of EL in BAT-mediated HDL metabolism has not been investigated so far. In the present study, we show that in mice, cold-stimulated activation of thermogenic adipocytes induced expression of Lipg in BAT and inguinal WAT but that loss of Lipg did not affect gene expression of thermogenic markers. Furthermore, in both wild type (WT) and Lipg-deficient mice, activation of thermogenesis resulted in a decline of HDL cholesterol levels. However, cold-induced remodeling of the HDL lipid composition was different between WT and Lipg-deficient mice. Notably, radioactive tracer studies with double-labeled HDL indicated that cold-induced hepatic HDL cholesterol clearance was lower in Lipg-deficient mice. Moreover, this reduced clearance was associated with impaired macrophage-to-feces cholesterol transport. Overall, these data indicate that EL is a determinant of HDL lipid composition, cholesterol flux, and HDL turnover in conditions of high thermogenic activity.
Collapse
Affiliation(s)
- Nicola Schaltenberg
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.,Department of General Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Clara John
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Markus Heine
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Friederike Haumann
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Franz Rinninger
- Department of Internal Medicine III, University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Ludger Scheja
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Joerg Heeren
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Anna Worthmann
- Department of Biochemistry and Molecular Cell Biology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| |
Collapse
|
17
|
Schilcher I, Stadler JT, Lechleitner M, Hrzenjak A, Berghold A, Pregartner G, Lhomme M, Holzer M, Korbelius M, Reichmann F, Springer A, Wadsack C, Madl T, Kratky D, Kontush A, Marsche G, Frank S. Endothelial Lipase Modulates Paraoxonase 1 Content and Arylesterase Activity of HDL. Int J Mol Sci 2021; 22:E719. [PMID: 33450841 PMCID: PMC7828365 DOI: 10.3390/ijms22020719] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/09/2021] [Accepted: 01/11/2021] [Indexed: 01/26/2023] Open
Abstract
Endothelial lipase (EL) is a strong modulator of the high-density lipoprotein (HDL) structure, composition, and function. Here, we examined the impact of EL on HDL paraoxonase 1 (PON1) content and arylesterase (AE) activity in vitro and in vivo. The incubation of HDL with EL-overexpressing HepG2 cells decreased HDL size, PON1 content, and AE activity. The EL modification of HDL did not diminish the capacity of HDL to associate with PON1 when EL-modified HDL was incubated with PON1-overexpressing cells. The overexpression of EL in mice significantly decreased HDL serum levels but unexpectedly increased HDL PON1 content and HDL AE activity. Enzymatically inactive EL had no effect on the PON1 content of HDL in mice. In healthy subjects, EL serum levels were not significantly correlated with HDL levels. However, HDL PON1 content was positively associated with EL serum levels. The EL-induced changes in the HDL-lipid composition were not linked to the HDL PON1 content. We conclude that primarily, the interaction of enzymatically active EL with HDL, rather than EL-induced alterations in HDL size and composition, causes PON1 displacement from HDL in vitro. In vivo, the EL-mediated reduction of HDL serum levels and the consequently increased PON1-to-HDL ratio in serum increase HDL PON1 content and AE activity in mice. In humans, additional mechanisms appear to underlie the association of EL serum levels and HDL PON1 content.
Collapse
Affiliation(s)
- Irene Schilcher
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; (I.S.); (M.L.); (M.K.); (A.S.); (T.M.); (D.K.)
| | - Julia T. Stadler
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; (J.T.S.); (M.H.); (F.R.); (G.M.)
| | - Margarete Lechleitner
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; (I.S.); (M.L.); (M.K.); (A.S.); (T.M.); (D.K.)
| | - Andelko Hrzenjak
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 16, 8036 Graz, Austria;
- Ludwig Boltzmann Institute for Lung Vascular Research, Stiftingtalstrasse 24, 8010 Graz, Austria
| | - Andrea Berghold
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Auenbruggerplatz 2, 8036 Graz, Austria; (A.B.); (G.P.)
| | - Gudrun Pregartner
- Institute for Medical Informatics, Statistics and Documentation, Medical University of Graz, Auenbruggerplatz 2, 8036 Graz, Austria; (A.B.); (G.P.)
| | - Marie Lhomme
- ICANalytics Lipidomics, Institute of Cardiometabolism and Nutrition, 75013 Paris, France;
| | - Michael Holzer
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; (J.T.S.); (M.H.); (F.R.); (G.M.)
| | - Melanie Korbelius
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; (I.S.); (M.L.); (M.K.); (A.S.); (T.M.); (D.K.)
| | - Florian Reichmann
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; (J.T.S.); (M.H.); (F.R.); (G.M.)
| | - Anna Springer
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; (I.S.); (M.L.); (M.K.); (A.S.); (T.M.); (D.K.)
| | - Christian Wadsack
- Department of Obstetrics and Gynecology, Medical University of Graz, Auenbruggerplatz 14, 8036 Graz, Austria;
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Tobias Madl
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; (I.S.); (M.L.); (M.K.); (A.S.); (T.M.); (D.K.)
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Dagmar Kratky
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; (I.S.); (M.L.); (M.K.); (A.S.); (T.M.); (D.K.)
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Anatol Kontush
- INSERM Research Unit 1166—ICAN, Sorbonne University, 75013 Paris, France;
| | - Gunther Marsche
- Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; (J.T.S.); (M.H.); (F.R.); (G.M.)
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Saša Frank
- Gottfried Schatz Research Center for Cell Signaling, Metabolism and Aging, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; (I.S.); (M.L.); (M.K.); (A.S.); (T.M.); (D.K.)
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| |
Collapse
|
18
|
Cole J, Blackhurst DM, Solomon GAE, Ratanjee BD, Benjamin R, Marais AD. Atherosclerotic cardiovascular disease in hyperalphalipoproteinemia due to LIPG variants. J Clin Lipidol 2020; 15:142-150.e2. [PMID: 33414088 DOI: 10.1016/j.jacl.2020.12.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 11/30/2020] [Accepted: 12/08/2020] [Indexed: 01/28/2023]
Abstract
BACKGROUND High density lipoprotein cholesterol (HDL-C) concentration correlates inversely with atherosclerotic cardiovascular disease (ASCVD) risk and is included in risk calculations. Endothelial lipase (EL) is a phospholipase that remodels HDL. Deficiency of EL due to mutations in its gene, LIPG, is associated with hyperalphalipoproteinemia. The effects of EL on HDL function and ASCVD risk remain poorly understood. OBJECTIVES To determine whether hyperalphalipoproteinemia due to EL deficiency is protective against ASCVD. METHODS We identified LIPG variants amongst patients with severe hyperalphalipoproteinemia (HDL-C >2.5 mmol/L) attending a referral lipid clinic in the Western Cape Province of South Africa. We analysed the clinical and biochemical phenotypes amongst primary hyperalphalipoproteinemia cases (males HDL-C >1.6 mmol/L; females HDL-C >1.8 mmol/L) due to LIPG variants, and the distribution of variants in normal and hyperalphalipoproteinemia ranges of HDL-C. RESULTS 1007 patients with HDL-C concentration ranging from 1.2 to 4.5 mmol/L were included. Seventeen females had primary hyperalphalipoproteinemia. Vascular disease was prominent, but not associated with HDL-C concentration, LDL-C concentration or carotid artery intima media thickness. Two novel and three known LIPG variants were identified in severe hyperalphalipoproteinemia. Four additional variants were identified in the extended cohort. Two common variants appeared normally distributed across the HDL-C concentration range, while six less-common variants were found only at higher HDL-C concentrations. One rare variant had a moderate effect. CONCLUSION Hyperalphalipoproteinemia due to LIPG variants is commoner in females and may not protect against ASCVD. Use of current risk calculations may be inappropriate in patients with hyperalphalipoproteinemia due to EL deficiency. Our study cautions targeting EL to reduce risk.
Collapse
Affiliation(s)
- Justine Cole
- Division of Chemical Pathology, University of Cape Town Faculty of Health Sciences, Anzio Road, Observatory, 7925, Cape Town, South Africa; Chemical Pathology, National Health Laboratory Service, C17 Groote Schuur Hospital, Main Road, Observatory, 7925, Cape Town, South Africa.
| | - Diane Mary Blackhurst
- Division of Chemical Pathology, University of Cape Town Faculty of Health Sciences, Anzio Road, Observatory, 7925, Cape Town, South Africa
| | - Gabriele Anna Eva Solomon
- Division of Chemical Pathology, University of Cape Town Faculty of Health Sciences, Anzio Road, Observatory, 7925, Cape Town, South Africa
| | - Bharati Dhanluxmi Ratanjee
- Division of Chemical Pathology, University of Cape Town Faculty of Health Sciences, Anzio Road, Observatory, 7925, Cape Town, South Africa
| | - Ryan Benjamin
- Division of Chemical Pathology, University of Cape Town Faculty of Health Sciences, Anzio Road, Observatory, 7925, Cape Town, South Africa; Chemical Pathology, National Health Laboratory Service, C17 Groote Schuur Hospital, Main Road, Observatory, 7925, Cape Town, South Africa
| | - Adrian David Marais
- Division of Chemical Pathology, University of Cape Town Faculty of Health Sciences, Anzio Road, Observatory, 7925, Cape Town, South Africa.
| |
Collapse
|
19
|
Associations between nine candidate genetic polymorphisms with coronary heart disease : A meta-analysis. Herz 2020; 45:15-28. [PMID: 31041492 DOI: 10.1007/s00059-019-4806-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2018] [Revised: 11/25/2018] [Accepted: 04/05/2019] [Indexed: 01/11/2023]
Abstract
BACKGROUND The aim of this study was to obtain a more accurate assessment of the potential association between nine genetic polymorphisms and the risk of coronary heart disease (CHD). METHODS A literature search was performed in PubMed, Embase, OVID, Web of Science, Wanfang, and Chinese National Knowledge Infrastructure (CNKI) databases to identify eligible studies. We analyzed the odds ratios (OR) and 95% confidence intervals (CI) to assess the strength of the associations. RESULTS A significant association was found between the PON1 -108C/T polymorphism and CHD risk (TT vs. CC: OR = 1.67, 95% CI = 1.14-2.47, p = 0.009; CT vs. CC: OR = 1.47, 95% CI = 1.17-1.85, p = 0.001; [TT + CT] vs. CC: OR = 1.56, 95% CI = 1.18-2.06, p = 0.002; T allele vs. C allele: OR = 1.28, 95%CI = 1.06-1.54, p = 0.011). There was a significant association between the hOGG1 +1245C/G polymorphism and CHD (GG vs. CC: OR = 2.33, 95% CI: 1.19-4.56, p = 0.014; CG vs. CC: OR = 1.36, 95% CI: 1.01-1.83, p = 0.046; [GG + CG] vs. CC: OR = 1.46, 95% CI: 1.10-1.94, p = 0.010; GG vs. [CC+CG]: OR = 2.11, 95% CI: 1.08-4.10, p = 0.028; G allele vs. C allele: OR = 1.45, 95% CI: 1.14-1.84, p = 0.002). The results also showed a statistically significant association of the SCARB1 +1050C/T polymorphism with CHD (TT vs. CC: OR = 1.30, 95% CI = 1.04-1.62, p = 0.022). Meta-analyses of the other six polymorphisms suggested a lack of any association with CHD risk. CONCLUSION Our results show that the susceptibility to CHD was associated with three polymorphisms: PON1 -108C/T, hOGG1 +1245C/G, and SCARB1 +1050C/T.
Collapse
|
20
|
Hong C, Deng R, Wang P, Lu X, Zhao X, Wang X, Cai R, Lin J. LIPG: an inflammation and cancer modulator. Cancer Gene Ther 2020; 28:27-32. [PMID: 32572177 DOI: 10.1038/s41417-020-0188-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/03/2020] [Accepted: 06/10/2020] [Indexed: 12/11/2022]
Abstract
Endothelial lipase (LIPG/EL) performs fundamental and vital roles in the human body, including cell composition, cytokine expression, and energy provision. Since LIPG predominantly functions as a phospholipase as well as presents low levels of triglyceride lipase activity, it plays an essential role in lipoprotein metabolism, and involves in the metabolic syndromes such as inflammatory response and atherosclerosis. Cytokines significantly affect LIPG expression in endothelial cells in many diseases. Recently, it is suggested that LIPG contributes to cancer initiation and progression, and LIPG attached increasing importance to its potential for future targeted therapy.
Collapse
Affiliation(s)
- Chang Hong
- The First Clinical Medical School (Nanfang Hospital), Southern Medical University, Guangzhou, 510515, PR China
| | - Ruxia Deng
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Ping Wang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Xiansheng Lu
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Xin Zhao
- The First Clinical Medical School (Nanfang Hospital), Southern Medical University, Guangzhou, 510515, PR China
| | - Xiaoyu Wang
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Rui Cai
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, PR China
| | - Jie Lin
- Department of Pathology, School of Basic Medical Sciences, Southern Medical University, Guangzhou, 510515, PR China.
| |
Collapse
|
21
|
Inhibition of LIPG phospholipase activity suppresses tumor formation of human basal-like triple-negative breast cancer. Sci Rep 2020; 10:8911. [PMID: 32488004 PMCID: PMC7265491 DOI: 10.1038/s41598-020-65400-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/04/2020] [Indexed: 01/10/2023] Open
Abstract
The endothelial lipase LIPG possesses serine phospholipase activity and is involved in lipoprotein metabolism. Our previous studies have revealed that LIPG overexpression is required for tumor formation and metastasis of human basal-like triple-negative breast cancer (TNBC). We also demonstrated that LIPG differentially regulates TNBC malignancy through its enzymatic and non-enzymatic functions. The present studies were aimed at determining how XEN445, a specific inhibitor targeting LIPG phospholipase activity, impacts on TNBC tumor formation and malignant features. We established a cell-based LIPG enzymatic assay system to measure the inhibitory effect of XEN445 on LIPG phospholipase activity and determine its IC50. We found that XEN445 preferentially inhibited the proliferation of LIPG-expressing TNBC cells but not LIPG-negative luminal breast cancer cells. XEN445 inhibited the self-renewal of cancer stem cells (CSCs) in vitro and TNBC tumor formation in vivo. However, XEN445 had no inhibitory effect on the invasiveness and CSC stemness of TNBC cells. Our studies suggest that targeting both LIPG enzymatic and non-enzymatic functions is an important strategy for the treatment of TNBC.
Collapse
|
22
|
Yan H, Niimi M, Wang C, Chen Y, Zhou H, Matsuhisa F, Nishijima K, Kitajima S, Zhang B, Yokomichi H, Nakajima K, Murakami M, Zhang J, Chen YE, Fan J. Endothelial Lipase Exerts its Anti-Atherogenic Effect through Increased Catabolism of β-VLDLs. J Atheroscler Thromb 2020; 28:157-168. [PMID: 32448826 PMCID: PMC7957034 DOI: 10.5551/jat.55244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Aim: Endothelial lipase (EL) plays an important role in lipoprotein metabolism. Our recent study showed that increased hepatic expression of EL attenuates diet-induced hypercholesterolemia, thus subsequently reducing atherosclerosis in transgenic (Tg) rabbits. However, it is yet to be determined whether increased EL activity itself per se is anti-atherogenic or whether the anti-atherogenic effect of EL is exclusively dependent on its lipid-lowering effect. Methods: To determine the mechanisms underlying EL-mediated anti-atherogenic effect, we fed Tg and non-Tg rabbits diets containing different amounts of cholesterol to make their plasma cholesterol levels similarly high. Sixteen weeks later, we examined their lipoprotein profiles and compared their susceptibility to atherosclerosis. Results: With Tg and non-Tg rabbits having hypercholesterolemia, the plasma lipids and lipoprotein profiles were observed to be similar, while pathological examinations revealed that lesion areas of both aortic and coronary atherosclerosis of Tg rabbits were not significantly different from non-Tg rabbits. Moreover, Tg rabbits exhibited faster clearance of DiI-labeled β-VLDLs than non-Tg rabbits. Conclusion: The results of our study suggest that the enhancement of β-VLDL catabolism is the major mechanism for atheroprotective effects of EL in Tg rabbits.
Collapse
Affiliation(s)
- Haizhao Yan
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Interdisciplinary Research, University of Yamanashi
| | - Manabu Niimi
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Interdisciplinary Research, University of Yamanashi
| | - Chuan Wang
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Interdisciplinary Research, University of Yamanashi.,Department of Pharmacology, College of Pharmacy, Shaanxi University of Chinese Medicine
| | - Yajie Chen
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Interdisciplinary Research, University of Yamanashi.,School of Biotechnology and Health Sciences, Wuyi University
| | - Huanjin Zhou
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Interdisciplinary Research, University of Yamanashi
| | | | - Kazutoshi Nishijima
- Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University
| | - Shuji Kitajima
- Analytical Research Center for Experimental Sciences, Saga University
| | - Bo Zhang
- Department of Biochemistry, Fukuoka University School of Medicine
| | | | - Katsuyuki Nakajima
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, Gunma University
| | - Masami Murakami
- Department of Clinical Laboratory Medicine, Graduate School of Medicine, Gunma University
| | - Jifeng Zhang
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center
| | - Y Eugene Chen
- Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center
| | - Jianglin Fan
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Interdisciplinary Research, University of Yamanashi.,School of Biotechnology and Health Sciences, Wuyi University
| |
Collapse
|
23
|
Wang J, Song J, Fang Q, Yao H, Wang F, Song Q, Ye G. Insight into the Functional Diversification of Lipases in the Endoparasitoid Pteromalus puparum (Hymenoptera: Pteromalidae) by Genome-scale Annotation and Expression Analysis. INSECTS 2020; 11:E227. [PMID: 32260574 PMCID: PMC7240578 DOI: 10.3390/insects11040227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/03/2020] [Accepted: 04/03/2020] [Indexed: 01/29/2023]
Abstract
Lipases play essential roles in digestion, transport, and processing of dietary lipids in insects. For parasitoid wasps with a unique life cycle, lipase functions could be multitudinous in particular. Pteromalus puparum is a pupal endoparasitoid of butterflies. The female adult deposits eggs into its host, along with multifunctional venom, and the developing larvae consume host as its main nutrition source. Parasitoid lipases are known to participate in the food digestion process, but the mechanism remains unclear. P. puparum genome and transcriptome data were interrogated. Multiple alignments and phylogenetic trees were constructed. We annotated a total of 64 predicted lipase genes belonging to five lipase families and suggested that eight venom and four salivary lipases could determine host nutrition environment post-parasitization. Many putative venom lipases were found with incomplete catalytic triads, relatively long β9 loops, and short lids. Data analysis reveals the loss of catalytic activities and weak triacylglycerol (TAG) hydrolytic activities of lipases in venom. Phylogenetic trees indicate various predicted functions of lipases in P. puparum. Our information enriches the database of parasitoid lipases and the knowledge of their functional diversification, providing novel insight into how parasitoid wasps manipulate host lipid storage by using venom lipases.
Collapse
Affiliation(s)
- Jiale Wang
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; (J.W.); (J.S.); (Q.F.); (H.Y.); (F.W.)
| | - Jiqiang Song
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; (J.W.); (J.S.); (Q.F.); (H.Y.); (F.W.)
| | - Qi Fang
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; (J.W.); (J.S.); (Q.F.); (H.Y.); (F.W.)
| | - Hongwei Yao
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; (J.W.); (J.S.); (Q.F.); (H.Y.); (F.W.)
| | - Fang Wang
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; (J.W.); (J.S.); (Q.F.); (H.Y.); (F.W.)
| | - Qisheng Song
- Division of Plant Sciences, University of Missouri, Columbia, MO 65211, USA;
| | - Gongyin Ye
- State Key Laboratory of Rice Biology & Ministry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou 310058, China; (J.W.); (J.S.); (Q.F.); (H.Y.); (F.W.)
| |
Collapse
|
24
|
Tora G, Kim SH, Pi Z, Johnson JA, Jiang J, Phillips M, Lloyd J, Abell LM, Lu H, Locke G, Adam LP, Taylor DS, Yin X, Behnia K, Zhao L, Yang R, Basso M, Caporuscio C, Chen AY, Liu E, Kirshgessner T, Onorato JM, Ryan C, Traeger SC, Gordon D, Wexler RR, Finlay HJ. Identification of Reversible Small Molecule Inhibitors of Endothelial Lipase (EL) That Demonstrate HDL-C Increase In Vivo. J Med Chem 2020; 63:1660-1670. [PMID: 31990537 DOI: 10.1021/acs.jmedchem.9b01831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Endothelial lipase (EL) hydrolyzes phospholipids in high-density lipoprotein (HDL) resulting in reduction in plasma HDL levels. Studies with murine transgenic, KO, or loss-of-function variants strongly suggest that inhibition of EL will lead to sustained plasma high-density lipoprotein cholesterol (HDL-C) increase and, potentially, a reduced cardiovascular disease (CVD) risk. Herein, we describe the discovery of a series of oxadiazole ketones, which upon optimization, led to the identification of compound 12. Compound 12 was evaluated in a mouse pharmacodynamics (PD) model and demonstrated a 56% increase in plasma HDL-C. In a mouse reverse cholesterol transport study, compound 12 stimulated cholesterol efflux by 53% demonstrating HDL-C functionality.
Collapse
|
25
|
Morelli MB, Chavez C, Santulli G. Angiopoietin-like proteins as therapeutic targets for cardiovascular disease: focus on lipid disorders. Expert Opin Ther Targets 2020; 24:79-88. [PMID: 31856617 DOI: 10.1080/14728222.2020.1707806] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Introduction: Angiopoietin-like (ANGPTL) proteins belong to a family of eight secreted factors that are structurally related to proteins that modulate angiogenesi, commonly known as angiopoietins. Specifically, ANGPTL3, ANGPTL4, and ANGPTL8 (the 'ANGPT L3-4-8 triad'), have surfaced as principal regulators of plasma lipid metabolism by functioning as potent inhibitors of lipoprotein lipase. The targeting of these proteins may open up future therapeutic avenues for metabolic and cardiovascular disease.Areas covered: This article systematically summarizes the compelling literature describing the mechanistic roles of ANGPTL3, 4, and 8 in lipid metabolism, emphasizing their importance in determining the risk of cardiovascular disease. We shed light on population-based studies linking loss-of-function variations in ANGPTL3, 4, and 8 with decreased risk of metabolic conditions and cardiovascular disorders. We also discuss how the strategies aiming at targeting the ANGPT L3-4-8 triad could offer therapeutic benefit in the clinical scenario.Expert opinion: Monoclonal antibodies and antisense oligonucleotides that target ANGPTL3, 4, and 8 are potentially an efficient therapeutic strategy for hypertriglyceridemia and cardiovascular risk reduction, especially in patients with limited treatment options. These innovative therapeutical approaches are at an embryonic stage in development and hence further investigations are necessary for eventual use in humans.
Collapse
Affiliation(s)
- Marco Bruno Morelli
- Department of Medicine; Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, New York, NY, USA.,Department of Molecular Pharmacology, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), The "Norman Fleischer" Institute for Diabetes and Metabolism (FIDAM), Albert Einstein College of Medicine, NY, New York, USA
| | - Christopher Chavez
- Department of Medicine; Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, New York, NY, USA
| | - Gaetano Santulli
- Department of Medicine; Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, New York, NY, USA.,Department of Molecular Pharmacology, Einstein-Mount Sinai Diabetes Research Center (ES-DRC), The "Norman Fleischer" Institute for Diabetes and Metabolism (FIDAM), Albert Einstein College of Medicine, NY, New York, USA.,Department of Advanced Biomedical Sciences and International Translational Research and Medical Education Consortium (ITME), "Federico II" University, Naples, Italy
| |
Collapse
|
26
|
Radulović S, Gottschalk B, Hörl G, Zardoya-Laguardia P, Schilcher I, Hallström S, Vujić N, Schmidt K, Trieb M, Graier WF, Malli R, Kratky D, Marsche G, Frank S. Endothelial lipase increases eNOS activating capacity of high-density lipoprotein. Biochim Biophys Acta Mol Cell Biol Lipids 2020; 1865:158612. [PMID: 31923467 PMCID: PMC7116681 DOI: 10.1016/j.bbalip.2020.158612] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 12/30/2019] [Accepted: 12/31/2019] [Indexed: 12/26/2022]
Abstract
Endothelial lipase (EL) changes structural and functional properties of high-density lipoprotein (HDL). HDL is a relevant modulator of endothelial nitric oxide synthase (eNOS) activity, but the effect of EL on HDL induced eNOS-activation has not yet been investigated. Here, we examined the impact of EL-modified HDL (EL-HDL) on eNOS activity, subcellular trafficking, and eNOS- dependent vasorelaxation. EL-HDL and empty virus (EV)-HDL as control were isolated from human serum incubated with EL-overexpressing or EV infected HepG2 cells. EL-HDL exhibited higher capacity to induce eNOS phosphorylation at Ser1177 and eNOS activity in EA.hy 926 cells, as well as eNOS-dependent vasorelaxation of mouse aortic rings compared to control HDL. As revealed by confocal and structured illumination-microscopy EL-HDL-driven induction of eNOS was accompanied by an increased eNOS-GFP targeting to the plasma membrane and a lower eNOS-GFP colocalization with Golgi and mitochondria. Widefield microscopy of filipin stained cells revealed that EL-HDL lowered cellular free cholesterol (FC) and as found by thin-layer chromatography increased cellular cholesterol ester (CE) content. Additionally, cholesterol efflux capacity, acyl-coenzyme A: cholesterol acyltransferase activity, and HDL particle uptake were comparable between EL-HDL and control HDL. In conclusion, EL increases eNOS activating capacity of HDL, a phenomenon accompanied by an enrichment of the plasma membrane eNOS pool, a decreased cell membrane FC and increased cellular CE content.
Collapse
Affiliation(s)
- Snježana Radulović
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Benjamin Gottschalk
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Gerd Hörl
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Pablo Zardoya-Laguardia
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Irene Schilcher
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Seth Hallström
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Nemanja Vujić
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Kurt Schmidt
- Department of Pharmacology and Toxicology, University of Graz, Graz, Austria
| | - Markus Trieb
- Otto Loewi Research Center, Division of Experimental and Clinical Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Wolfgang F Graier
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Roland Malli
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Dagmar Kratky
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Gunther Marsche
- Otto Loewi Research Center, Division of Experimental and Clinical Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Saša Frank
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria.
| |
Collapse
|
27
|
Wang C, Niimi M, Kitajima S, Matsuhisa F, Yan H, Dong S, Liang J, Fan J. Sex hormones affect endothelial lipase-mediated lipid metabolism and atherosclerosis. Lipids Health Dis 2019; 18:226. [PMID: 31870448 PMCID: PMC6929444 DOI: 10.1186/s12944-019-1175-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 12/16/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Endothelial lipase (EL) plays an important role in lipoprotein metabolism and atherosclerosis. To study the functional roles of EL, we recently generated transgenic (Tg) rabbits and reported that increased hepatic expression of EL in male Tg rabbits significantly reduced diet-induced hypercholesterolemia compared with non-Tg controls. This gender difference suggests that sex hormones may mediate EL functions thereby influencing lipoprotein metabolism. To examine this hypothesis, we compared the effects of orchiectomy and ovariectomy on plasma lipids and diet-induced atherosclerosis in both Tg and non-Tg rabbits. METHODS Male rabbits were under orchiectomy whereas female rabbits were under ovariectomy. We compared plasma lipids, lipoproteins, and apolipoproteins of rabbits before and after surgery in each group fed either a chow diet or cholesterol-rich diet. RESULTS On a chow diet, both male and female Tg rabbits showed lower plasma lipids than non-Tg counterparts and this lipid-lowering effect of EL was not affected by either orchiectomy in male or ovariectomy in female Tg rabbits. On a cholesterol diet; however, male Tg rabbits but not female Tg rabbits showed significant resistance to diet-induced hypercholesterolemia and atherosclerosis. The EL-mediated atheroprotective effect was eliminated after orchiectomy in male Tg rabbits. Female Tg rabbits showed similar levels of total cholesterol and lesion size of atherosclerosis compared with non-Tg rabbits and ovariectomy did not affect diet-induced hypercholesterolemia or atherosclerosis. CONCLUSION These results suggest that increased EL protects against diet-induced hypercholesterolemia and atherosclerosis. The beneficial effect of EL was dependent upon the presence of androgenic hormones.
Collapse
Affiliation(s)
- Chuan Wang
- Department of Pharmacology, Shaanxi University of Chinese Medicine, Xianyang, China.,Department of Molecular Pathology, Faculty of Medicine, Graduate School of Medical Sciences, University of Yamanashi, 1110 Shimokato, Yamanashi, 409-3898, Japan
| | - Manabu Niimi
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Medical Sciences, University of Yamanashi, 1110 Shimokato, Yamanashi, 409-3898, Japan
| | - Shuji Kitajima
- Analytical Research Center for Experimental Sciences, Saga University, Saga, Japan
| | - Fumikazu Matsuhisa
- Analytical Research Center for Experimental Sciences, Saga University, Saga, Japan
| | - Haizhao Yan
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Medical Sciences, University of Yamanashi, 1110 Shimokato, Yamanashi, 409-3898, Japan
| | - Sijun Dong
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China
| | - Jingyan Liang
- Research Center for Vascular Biology, School of Medicine, Yangzhou University, Yangzhou, China
| | - Jianglin Fan
- Department of Molecular Pathology, Faculty of Medicine, Graduate School of Medical Sciences, University of Yamanashi, 1110 Shimokato, Yamanashi, 409-3898, Japan. .,School of Biotechnology and Health Sciences, Wuyi University, Dongcheng Cun No. 22, Jiangmen, 529020, China.
| |
Collapse
|
28
|
Lipase is associated with deltamethrin resistance in Culex pipiens pallens. Parasitol Res 2019; 119:23-30. [PMID: 31760499 DOI: 10.1007/s00436-019-06489-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 09/25/2019] [Indexed: 10/25/2022]
Abstract
The wide application of pyrethroids has led to the rapid development of insecticide resistance in mosquitoes, leading to a rise in mosquito-borne diseases. We previously identified five differentially expressed lipase family genes upon evaluating the transcriptomes of deltamethrin-resistant and deltamethrin-susceptible strains of Culex pipiens pallens. Herein, the gene expression levels were verified by quantitative real-time PCR, and two lipase family genes, lipase A and pancreatic triacylglycerol lipase A, were chosen for further investigations. Using cell viability assays and Centers for Disease Control and Prevention bottle bioassays, lipase A was found to increase the resistance of mosquitoes against deltamethrin both in vitro and in vivo. Our findings indicate that lipase A is involved in conferring deltamethrin resistance in Cx. pipiens pallens.
Collapse
|
29
|
Abstract
Our understanding of the role of the vascular endothelium has evolved over the past 2 decades, with the recognition that it is a dynamically regulated organ and that it plays a nodal role in a variety of physiological and pathological processes. Endothelial cells (ECs) are not only a barrier between the circulation and peripheral tissues, but also actively regulate vascular tone, blood flow, and platelet function. Dysregulation of ECs contributes to pathological conditions such as vascular inflammation, atherosclerosis, hypertension, cardiomyopathy, retinopathy, neuropathy, and cancer. The close anatomic relationship between vascular endothelium and highly vascularized metabolic organs/tissues suggests that the crosstalk between ECs and these organs is vital for both vascular and metabolic homeostasis. Numerous reports support that hyperlipidemia, hyperglycemia, and other metabolic stresses result in endothelial dysfunction and vascular complications. However, how ECs may regulate metabolic homeostasis remains poorly understood. Emerging data suggest that the vascular endothelium plays an unexpected role in the regulation of metabolic homeostasis and that endothelial dysregulation directly contributes to the development of metabolic disorders. Here, we review recent studies about the pivotal role of ECs in glucose and lipid homeostasis. In particular, we introduce the concept that the endothelium adjusts its barrier function to control the transendothelial transport of fatty acids, lipoproteins, LPLs (lipoprotein lipases), glucose, and insulin. In addition, we summarize reports that ECs communicate with metabolic cells through EC-secreted factors and we discuss how endothelial dysregulation contributes directly to the development of obesity, insulin resistance, dyslipidemia, diabetes mellitus, cognitive defects, and fatty liver disease.
Collapse
Affiliation(s)
- Xinchun Pi
- From the Section of Athero & Lipo, Department of Medicine, Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX (X.P., L.X.)
| | - Liang Xie
- From the Section of Athero & Lipo, Department of Medicine, Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX (X.P., L.X.)
| | - Cam Patterson
- University of Arkansas for Medical Sciences, Little Rock (C.P.)
| |
Collapse
|
30
|
Nagao M, Miyashita K, Mori K, Irino Y, Toh R, Hara T, Hirata KI, Shinohara M, Nakajima K, Ishida T. Serum concentration of full-length- and carboxy-terminal fragments of endothelial lipase predicts future cardiovascular risks in patients with coronary artery disease. J Clin Lipidol 2019; 13:839-846. [PMID: 31473149 DOI: 10.1016/j.jacl.2019.07.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 06/18/2019] [Accepted: 07/21/2019] [Indexed: 10/26/2022]
Abstract
BACKGROUND Endothelial lipase (EL), a regulator of plasma high-density lipoprotein cholesterol (HDL-C), is secreted as a 68-kDa mature glycoprotein, and then cleaved by proprotein convertases. However, the clinical significance of the circulating EL fragments remains unclear. OBJECTIVE The objective of this study was to analyze the impact of serum EL fragments on HDL-C levels and major adverse cardiovascular events (MACE). METHODS Using novel monoclonal antibodies (RC3A6) against carboxy-terminal EL protein, we have established a new enzyme-linked immunosorbent assay (ELISA) system, which can detect both full-length EL protein (full EL) and carboxy-terminal truncated fragments (total EL) in serum. The previous sandwich ELISA detected only full EL. The full and total EL mass were measured in 556 patients with coronary artery disease. Among them, 272 patients who underwent coronary intervention were monitored for 2 years for MACE. RESULTS There was a significant correlation between serum full and total EL mass (R = 0.45, P < .0001). However, the total EL mass showed a stronger inverse correlation with serum HDL-cholesterol concentration than the full EL mass (R = -0.17 vs -0.02). Kaplan-Meier analysis documented an association of serum total EL mass and MACE (log-rank P = .037). When an optimal cutoff value was set at 96.23 ng/mL, total EL mass was an independent prognostic factor for MACE in the Cox proportional hazard model (HR; 1.75, 95% CI; 1.10-2.79, P = .018). CONCLUSION Serum total EL mass could be a predictor for MACE in patients with coronary artery disease. This novel ELISA will be useful for further clarifying the impact of EL on HDL metabolism and atherosclerosis.
Collapse
Affiliation(s)
- Manabu Nagao
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | | | - Kenta Mori
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Yasuhiro Irino
- Division of Evidence-based Laboratory Medicine, Kobe University Graduate School of Medicine
| | - Ryuji Toh
- Division of Evidence-based Laboratory Medicine, Kobe University Graduate School of Medicine
| | - Tetsuya Hara
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Ken-Ichi Hirata
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan; Division of Evidence-based Laboratory Medicine, Kobe University Graduate School of Medicine
| | - Masakazu Shinohara
- Division of Epidemiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Katsuyuki Nakajima
- Laboratory of Clinical Nutrition and Medicine, Kagawa Nutrition University, Tokyo, Japan
| | - Tatsuro Ishida
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, Japan.
| |
Collapse
|
31
|
Kumari R, Kumar S, Kant R. An update on metabolic syndrome: Metabolic risk markers and adipokines in the development of metabolic syndrome. Diabetes Metab Syndr 2019; 13:2409-2417. [PMID: 31405652 DOI: 10.1016/j.dsx.2019.06.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 06/07/2019] [Indexed: 02/06/2023]
Abstract
Metabolic syndrome is a collection of physiological and biochemical abnormalities about 20-25% of adult population in developing countries is suffering from metabolic syndrome. Previous research demonstrated that adipose tissue plays an important role in energy regulation via endocrine, paracrine and autocrine signals as results of obesity due to accumulation of adipose tissue to excess that by time affects negatively both physical and psychological health and well being, it has been found that adipose tissues produces a variety of factors known as "adipokines" which play a key role in the development and progression of the disease and also hypothesized that adipokines are a possible link between obesity and the other risk components of the Metabolic syndrome. Many of the adipokines exert multiple actions in a variety of cellular processes leading to a complex array of abnormal characteristic of Metabolic syndrome. Abnormal production of these adipokines by expanded visceral fat during Adiposity contributes to a pro-inflammatory state. Increasing evidence suggests that aberrant production/release of adipokine from adipocyte i.e. adiponectin, leptin and resistin etc, may contribute to the health problems associated with Adiposity such as dyslipidemia, insulin resistance and atherosclerosis. This study conclusively have shown a significant role of adipokines secreted by adipose tissue and various metabolic risk markers play a important role in the development of Metabolic syndrome.
Collapse
Affiliation(s)
- Reena Kumari
- Department of Biochemistry, King George's Medical University, Lucknow, India
| | - Sandeep Kumar
- Department of Molecular Biology AIIMS, Rishikesh, India.
| | - Ravi Kant
- Department of Molecular Biology AIIMS, Rishikesh, India
| |
Collapse
|
32
|
Schilcher I, Ledinski G, Radulović S, Hallström S, Eichmann T, Madl T, Zhang F, Leitinger G, Kolb-Lenz D, Darnhofer B, Birner-Gruenberger R, Wadsack C, Kratky D, Marsche G, Frank S, Cvirn G. Endothelial lipase increases antioxidative capacity of high-density lipoprotein. Biochim Biophys Acta Mol Cell Biol Lipids 2019; 1864:1363-1374. [PMID: 31220617 PMCID: PMC6699986 DOI: 10.1016/j.bbalip.2019.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 05/31/2019] [Accepted: 06/14/2019] [Indexed: 12/20/2022]
Abstract
Endothelial lipase (EL) is a strong determinant of structural and functional properties of high-density lipoprotein (HDL). We examined whether the antioxidative capacity of HDL is affected by EL. EL-modified HDL (EL-HDL) and control EV-HDL were generated by incubation of HDL with EL- overexpressing or control HepG2 cells. As determined by native gradient gel electrophoresis, electron microscopy, and small-angle X-ray scattering EL-HDL is smaller than EV-HDL. Mass spectrometry revealed an enrichment of EL-HDL with lipolytic products and depletion of phospholipids and triacylglycerol. Kinetics of conjugated diene formation and HPLC-based malondialdehyde quantification revealed that EL-HDL exhibited a significantly higher resistance to copper ion-induced oxidation and a significantly higher capacity to protect low-density lipoprotein (LDL) from copper ion-induced oxidation when compared to EV-HDL. Depletion of the lipolytic products from EL-HDL abolished the capacity of EL-HDL to protect LDL from copper ion-induced oxidation, which could be partially restored by lysophosphatidylcholine enrichment. Proteomics of HDL incubated with oxidized LDL revealed significantly higher levels of methionine 136 sulfoxide in EL-HDL compared to EV-HDL. Chloramine T (oxidizes methionines and modifies free thiols), diminished the difference between EL-HDL and EV-HDL regarding the capacity to protect LDL from oxidation. In absence of LDL small EV-HDL and EL-HDL exhibited higher resistance to copper ion-induced oxidation when compared to respective large particles. In conclusion, the augmented antioxidative capacity of EL-HDL is primarily determined by the enrichment of HDL with EL-generated lipolytic products and to a lesser extent by the decreased HDL particle size and the increased activity of chloramine T-sensitive mechanisms.
Collapse
Affiliation(s)
- Irene Schilcher
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Gerhard Ledinski
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Snježana Radulović
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Seth Hallström
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Thomas Eichmann
- Institute of Molecular Biosciences, University of Graz, Heinrichstrasse 31, 8010 Graz, Austria; Center for Explorative Lipidomics, BioTechMed-Graz, Heinrichstrasse 31, 8010 Graz, Austria
| | - Tobias Madl
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Omics Center Graz, BioTechMed-Graz, Stiftingtalstrasse 24, 8010 Graz, Austria
| | - Fangrong Zhang
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria
| | - Gerd Leitinger
- Gottfried Schatz Research Center, Department of Cell Biology, Histology and Embryology. Center for Medical Research, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Dagmar Kolb-Lenz
- Gottfried Schatz Research Center, Department of Cell Biology, Histology and Embryology. Center for Medical Research, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| | - Barbara Darnhofer
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Omics Center Graz, BioTechMed-Graz, Stiftingtalstrasse 24, 8010 Graz, Austria; Austrian Center of Industrial Biotechnology, Petersgasse 14, A-8010 Graz, Austria
| | - Ruth Birner-Gruenberger
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Omics Center Graz, BioTechMed-Graz, Stiftingtalstrasse 24, 8010 Graz, Austria; Austrian Center of Industrial Biotechnology, Petersgasse 14, A-8010 Graz, Austria
| | - Christian Wadsack
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Department of Obstetrics and Gynecology, Medical University of Graz, Auenbruggerplatz 14, 8036 Graz, Austria
| | - Dagmar Kratky
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria
| | - Gunther Marsche
- BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria; Otto Loewi Research Center, Division of Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010 Graz, Austria
| | - Saša Frank
- Gottfried Schatz Research Center, Molecular Biology and Biochemistry, Medical University of Graz, Neue Stiftingtalstraße 6/6, 8010 Graz, Austria; BioTechMed-Graz, Mozartgasse 12/II, 8010 Graz, Austria.
| | - Gerhard Cvirn
- Otto Loewi Research Center, Division of Physiological Chemistry, Medical University of Graz, Neue Stiftingtalstraße 6/3, 8010 Graz, Austria
| |
Collapse
|
33
|
Kobayashi J. Which is the Best Predictor for the Development of Atherosclerosis Among Circulating Lipoprotein Lipase, Hepatic Lipase, and Endothelial Lipase? J Atheroscler Thromb 2019; 26:758-759. [PMID: 30814386 PMCID: PMC6753242 DOI: 10.5551/jat.ed108] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
|
34
|
Yu X, Lu J, Li J, Guan W, Deng S, Deng Q, Ye H, Han W, Yu Y, Zhang R. Serum Triglyceride Lipase Concentrations are Independent Risk Factors for Coronary Artery Disease and In-Stent Restenosis. J Atheroscler Thromb 2019; 26:762-774. [PMID: 30651409 PMCID: PMC6753239 DOI: 10.5551/jat.46821] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: Endothelial lipase (EL), hepatic lipase (HL), and lipoprotein lipase (LPL) are all triglyceride lipases and are associated with coronary artery disease (CAD). However, whether they can be simultaneous independent risk factors for CAD is unknown. In the present study, we investigated whether the three lipases can be independent risk factors simultaneously for CAD and whether combining these lipases could provide greater predictive power than high-density lipoprotein cholesterol (HDL-c) for the development of CAD. Methods: Eighty-six patients with CAD and 65 healthy controls were enrolled in the study. Additionally, 38 patients who underwent one-year follow-up angiography after percutaneous coronary intervention with stent implantation were collected to investigate in-stent restenosis. Serum EL, HL, and LPL concentrations were measured and compared with other coronary risk factors. Results: Serum EL and HL concentrations were both significantly increased in patients with CAD or in-stent restenosis, whereas serum LPL concentration was reduced significantly in patients with CAD. Multivariate logistic regression analysis indicated that the three lipases were simultaneous independent risk factors for CAD. However, only serum EL concentration was considered an independent risk factor for in-stent restenosis. Importantly, the receiver operating characteristic curve showed that the combined measurement of the three lipases displayed better predictive power than HDL-c or any one of the three lipases for CAD. Conclusions: Serum EL concentration was an independent risk factor for both CAD and in-stent restenosis. Moreover, the combined assessment of serum EL, HL, and LPL concentrations as multiple risk factors provided potent predictive power for CAD.
Collapse
Affiliation(s)
- Xiaolan Yu
- Shanghai Municipality Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University
| | - Jianping Lu
- Department of Physical examinations, The Sixth People's Hospital, School of Medicine, Shanghai Jiao Tong University
| | - Jingjing Li
- Laboratory of Regeneromics, School of Pharmacy, Shanghai Jiao Tong University
| | - Wen Guan
- Department of Biochemistry, Zhongshan School of Medicine, Sun Yat-sen University
| | - Shaorong Deng
- Laboratory of Regeneromics, School of Pharmacy, Shanghai Jiao Tong University
| | - Qing Deng
- Shanghai Municipality Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University
| | - Hao Ye
- Laboratory of Regeneromics, School of Pharmacy, Shanghai Jiao Tong University
| | - Wei Han
- Laboratory of Regeneromics, School of Pharmacy, Shanghai Jiao Tong University
| | - Yan Yu
- Shanghai Municipality Key Laboratory of Veterinary Biotechnology, School of Agriculture and Biology, Shanghai Jiao Tong University
| | - Ruiyan Zhang
- Department of Cardiology, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University
| |
Collapse
|
35
|
Nagashio S, Ajima K, Maejima D, Sanjo H, Kajihara R, Hayashi M, Watanabe-Asaka T, Kaidoh M, Yokoyama Y, Taki S, Kawai Y, Ohhashi T. Water intake increases mesenteric lymph flow and the total flux of albumin, long-chain fatty acids, and IL-22 in rats: new concept of absorption in jejunum. Am J Physiol Gastrointest Liver Physiol 2019; 316:G155-G165. [PMID: 30431330 DOI: 10.1152/ajpgi.00325.2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
The traditional Japanese health care custom recommends that a suitable volume of water is consumed. However, physiological and immunological mechanisms in support of this practice are unknown. Therefore, we conducted rat and rabbit in vivo experiments to investigate the effects of intragastric administration of distilled water on the jejunal-originated lymph flow and the concentrations and total flux of cells, albumin, long-chain fatty acids, and innate lymphoid cell 3 (ILC-3)-secreted interleukin-22 (IL-22) through mesenteric lymph vessels. The distribution and activity of ILC-3 in rat small intestine by water intake were evaluated using flow cytometry and RT-PCR. The intragastric administration of distilled water caused significant increases in rat mesenteric lymph flow and in the total flux of cells, albumin, long-chain fatty acids, and IL-22 through the lymph vessels. Intravenously injected Evans blue dye was rapidly transported into rabbit mesenteric lymph vessel and cisterna chyli. The distribution of ILC-3 and the expression of IL-22 mRNA were maximal in the lamina propria cells of the rat jejunum. No significant presence of ILC-3 in the lymph was observed in the control and under water intake conditions. In conclusion, the absorbed water in the jejunum is transported through mesenteric lymph vessels. The higher permeability of albumin in the jejunal microcirculation may play key roles in the transport of consumed water and the reservoir and transporter of long-chain fatty acids. Water intake also accelerates the transfer of IL-22 to the mesenteric lymph, which may contribute, in part, to maintaining and promoting the innate immunity in the body. NEW & NOTEWORTHY The higher permeability of albumin-mediated transport of water-soluble substances in mesenteric lymph vessels of the jejunum may have a large impact on the classic concept suggesting that water-soluble small molecules travel to the liver via the portal vein. ILC-3 is mainly housed in the lamina propria of the jejunum, especially its upper part. IL-22 released from the ILC-3 is also transported through mesenteric lymph in collaboration with the albumin-mediated movement of consumed water.
Collapse
Affiliation(s)
- Sachiho Nagashio
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine , Matsumoto , Japan
| | - Kumiko Ajima
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
| | - Daisuke Maejima
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
| | - Hideki Sanjo
- Department of Molecular and Cellular Immunology, Shinshu University School of Medicine , Matsumoto , Japan
| | - Ryo Kajihara
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
- Department of Dentistry and Oral Surgery, Shinshu University School of Medicine , Matsumoto , Japan
| | - Moyuru Hayashi
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
- Division of Physiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University , Sendai , Japan
| | - Tomomi Watanabe-Asaka
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
- Division of Physiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University , Sendai , Japan
| | - Maki Kaidoh
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
| | - Yumiko Yokoyama
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
| | - Shinshuke Taki
- Department of Molecular and Cellular Immunology, Shinshu University School of Medicine , Matsumoto , Japan
| | - Yoshiko Kawai
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
- Division of Physiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University , Sendai , Japan
| | - Toshio Ohhashi
- Department of Innovation of Medical and Health Sciences Research, Shinshu University School of Medicine , Matsumoto , Japan
| |
Collapse
|
36
|
Johansson PI, Nakahira K, Rogers AJ, McGeachie MJ, Baron RM, Fredenburgh LE, Harrington J, Choi AMK, Christopher KB. Plasma mitochondrial DNA and metabolomic alterations in severe critical illness. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2018; 22:360. [PMID: 30594224 PMCID: PMC6310975 DOI: 10.1186/s13054-018-2275-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 11/22/2018] [Indexed: 01/28/2023]
Abstract
Background Cell-free plasma mitochondrial DNA (mtDNA) levels are associated with endothelial dysfunction and differential outcomes in critical illness. A substantial alteration in metabolic homeostasis is commonly observed in severe critical illness. We hypothesized that metabolic profiles significantly differ between critically ill patients relative to their level of plasma mtDNA. Methods We performed a metabolomic study with biorepository plasma samples collected from 73 adults with systemic inflammatory response syndrome or sepsis at a single academic medical center. Patients were treated in a 20-bed medical ICU between 2008 and 2010. To identify key metabolites and metabolic pathways related to plasma NADH dehydrogenase 1 (ND1) mtDNA levels in critical illness, we first generated metabolomic data using gas and liquid chromatography-mass spectroscopy. We performed fold change analysis and volcano plot visualization based on false discovery rate-adjusted p values to evaluate the distribution of individual metabolite concentrations relative to ND1 mtDNA levels. We followed this by performing orthogonal partial least squares discriminant analysis to identify individual metabolites that discriminated ND1 mtDNA groups. We then interrogated the entire metabolomic profile using pathway overrepresentation analysis to identify groups of metabolite pathways that were different relative to ND1 mtDNA levels. Results Metabolomic profiles significantly differed in critically ill patients with ND1 mtDNA levels ≥ 3200 copies/μl plasma relative to those with an ND1 mtDNA level < 3200 copies/μl plasma. Several analytical strategies showed that patients with ND1 mtDNA levels ≥ 3200 copies/μl plasma had significant decreases in glycerophosphocholines and increases in short-chain acylcarnitines. Conclusions Differential metabolic profiles during critical illness are associated with cell-free plasma ND1 mtDNA levels that are indicative of cell damage. Elevated plasma ND1 mtDNA levels are associated with decreases in glycerophosphocholines and increases in short-chain acylcarnitines that reflect phospholipid metabolism dysregulation and decreased mitochondrial function, respectively. Electronic supplementary material The online version of this article (10.1186/s13054-018-2275-7) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Pär I Johansson
- Department of Clinical Immunology, Copenhagen University Hospital, Copenhagen, Denmark
| | - Kiichi Nakahira
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Weill Cornell Medicine, New York, NY, USA
| | - Angela J Rogers
- Pulmonary & Critical Care Medicine, Stanford University Medical Center, Stanford, CA, USA
| | - Michael J McGeachie
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Rebecca M Baron
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - Laura E Fredenburgh
- Pulmonary and Critical Care Division, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA
| | - John Harrington
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, New York Presbyterian-Weill Cornell Medical Center, Weill Cornell Medicine, New York, NY, USA
| | - Augustine M K Choi
- Department of Medicine, New York-Presbyterian Hospital, New York, NY, USA
| | - Kenneth B Christopher
- Renal Division, Department of Medicine, Brigham and Women's Hospital, 75 Francis Street, MRB 418, Boston, MA, 02115, USA.
| |
Collapse
|
37
|
Johnson JA, Tora G, Pi Z, Phillips M, Yin X, Yang R, Zhao L, Chen AY, Taylor DS, Basso M, Rose A, Behnia K, Onorato J, Chen XQ, Abell LM, Lu H, Locke G, Caporuscio C, Galella M, Adam LP, Gordon D, Wexler RR, Finlay HJ. Sulfonylated Benzothiazoles as Inhibitors of Endothelial Lipase. ACS Med Chem Lett 2018; 9:1263-1268. [PMID: 30613337 DOI: 10.1021/acsmedchemlett.8b00424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/19/2018] [Indexed: 12/13/2022] Open
Abstract
Endothelial lipase (EL) selectively metabolizes high density lipoprotein (HDL) particles. Inhibition of EL has been shown to increase HDL concentration in preclinical animal models and was targeted as a potential treatment of atherosclerosis. We describe the introduction of an α-sulfone moiety to a benzothiazole series of EL inhibitors resulting in increased potency versus EL. Optimization for selectivity versus hepatic lipase and pharmacokinetic properties resulted in the discovery of 24, which showed good in vitro potency and bioavailability but, unexpectedly, did not increase HDL in the mouse pharmacodynamic model at the target plasma exposure.
Collapse
|
38
|
Solim LA, Gencan IA, Çelik B, Ataacar A, Koç U, Büyükören B, Güngör G, Isbir S. Endothelial Lipase Gene Polymorphism (584 C/T) in Coronary Artery Patients Among a Turkish Population. In Vivo 2018; 32:1105-1109. [PMID: 30150432 DOI: 10.21873/invivo.11352] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 06/01/2018] [Accepted: 06/06/2018] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM The endothelial lipase gene (LIPG) has a major role in regulating high density lipoprotein cholesterol (HDL-C), therefore this study investigated whether LIPG is associated with coronary artery disease (CAD) in a Turkish population. MATERIALS AND METHODS The LIPG (584 C/T) mutation was analyzed in 74 CAD patients and 73 controls. RESULTS There was a significant difference between the two groups regarding the mutant T allele frequencies (χ2=0.456, p=0.020; 26.7% and 41.8% in patient and control groups, respectively) for 584 C/T. Even though the TT genotype was not significantly different, it had p=0.054 which supported our results. CONCLUSION The endothelial lipase gene (584 C/T) T allele might be protective in association with coronary artery disease. Therefore, LIPG gene is related to risk for CAD in the Turkish population probably through altering HDL-C metabolism.
Collapse
Affiliation(s)
| | | | - Behiç Çelik
- Faculty of Medicine, Yeditepe University, Istanbul, Turkey
| | - Alara Ataacar
- Faculty of Medicine, Yeditepe University, Istanbul, Turkey
| | - Umut Koç
- Faculty of Medicine, Yeditepe University, Istanbul, Turkey
| | | | - Gizem Güngör
- Faculty of Medicine, Yeditepe University, Istanbul, Turkey
| | - Selim Isbir
- Department of Cardiovascular Surgery, Marmara University Pendik Education and Research Hospital, Istanbul, Turkey
| |
Collapse
|
39
|
Geladari E, Tsamadia P, Vallianou NG. ANGPTL3 Inhibitors - Their Role in Cardiovascular Disease Through Regulation of Lipid Metabolism. Circ J 2018; 83:267-273. [PMID: 30504621 DOI: 10.1253/circj.cj-18-0442] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Elevated plasma lipid levels are linked to atherosclerosis, a hallmark for coronary artery disease (CAD), documented by animal studies as well as angiographic and clinical studies. The ability to treat hyperlipidemia through lifestyle changes and lipid-lowering agents has been related to the slow progression of atherosclerosis and decreased incidence of major coronary events. Angiopoietin-like proteins (ANGPTLs) are a family of secreted glycoproteins expressed in the liver that share common domain characteristics with angiopoietins, the main regulators of angiogenesis. Although ANGPTLs cannot bind the angiopoietin receptors expressed on endothelial cells, 2 ANGPTL family members (ANGPTL3 and ANGPTL4) have clinical importance because of their unambiguous effects on lipoprotein metabolism in mice and humans. The regulation of plasma lipid levels by ANGPTL3 is controlled via affecting lipoprotein lipase and endothelial lipase-mediated hydrolysis of triglycerides (TGs) and phospholipids. ANGPTL 3, along with the other 2 members, 4 and 8, is a key to balancing the distribution of circulating TGs between white adipose tissue (WAT) and oxidative tissues. Thus, ongoing trials with newly discovered medications in the form of monoclonal antibodies or antisense oligonucleotides with novel targets are under analysis and may represent a fresh frontier in the treatment of hyperlipidemia and CAD.
Collapse
Affiliation(s)
- Eleni Geladari
- Department of Internal Medicine, Evangelismos General Hospital
| | | | | |
Collapse
|
40
|
Nagao M, Nakajima H, Toh R, Hirata KI, Ishida T. Cardioprotective Effects of High-Density Lipoprotein Beyond its Anti-Atherogenic Action. J Atheroscler Thromb 2018; 25:985-993. [PMID: 30146614 PMCID: PMC6193192 DOI: 10.5551/jat.rv17025] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
High-density lipoprotein cholesterol (HDL-C) has been identified as a powerful independent negative predictor of cardiovascular disease. The beneficial effect of HDL is largely attributable to its key role in reverse cholesterol transport, whereby excess cholesterol in the peripheral tissues is transported to the liver, reducing the atherosclerotic burden. However, mounting evidence indicates that HDL also has pleiotropic properties, such as anti-inflammatory, anti-oxidative, and vasodilatory properties, which may contribute in reducing the incidence of heart failure. Actually, previous data from clinical and experimental studies have suggested that HDL exerts cardioprotective effects irrespective of the presence/absence of coronary artery disease. This review summarizes the currently available evidence regarding beneficial effects of HDL on the heart beyond its anti-atherogenic property. Understanding the mechanisms of cardiac protection by HDL will provide new insight into the underlying mechanism and therapeutic strategy for heart failure.
Collapse
Affiliation(s)
- Manabu Nagao
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine
| | - Hideto Nakajima
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine
| | - Ryuji Toh
- Division of Evidence-Based Laboratory Medicine, Kobe University Graduate School of Medicine
| | - Ken-Ichi Hirata
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine
| | - Tatsuro Ishida
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine
| |
Collapse
|
41
|
Lin SL, Wei T, Lin S, Chen S, Guo LQ, Lin JF, Yun F. Improving the thermal stability of anisyl alcohol by β-galactosidase enzymatic glycosylation. Int J Food Sci Technol 2018. [DOI: 10.1111/ijfs.13917] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Shu-Ling Lin
- Institute of Food Biotechnology; South China Agriculture University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
- Department of Bioengineering; College of Food Science; South China Agricultural University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
| | - Tao Wei
- Institute of Food Biotechnology; South China Agriculture University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
- Department of Bioengineering; College of Food Science; South China Agricultural University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
| | - Shuoxin Lin
- James Clark School of Engineering; University of Maryland; College Park MD 20742 USA
| | - Shu Chen
- Department of Bioengineering; College of Food Science; South China Agricultural University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
| | - Li-Qiong Guo
- Institute of Food Biotechnology; South China Agriculture University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
- Department of Bioengineering; College of Food Science; South China Agricultural University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
- Alchemy Biotechnology Co. Ltd. of Guangzhou City; Guangzhou 510760 China
| | - Jun-Fang Lin
- Institute of Food Biotechnology; South China Agriculture University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
- Department of Bioengineering; College of Food Science; South China Agricultural University; 482 Wu-Shan Street, Tian-He Guangzhou 510640 China
- Alchemy Biotechnology Co. Ltd. of Guangzhou City; Guangzhou 510760 China
| | - Fan Yun
- Alchemy Biotechnology Co. Ltd. of Guangzhou City; Guangzhou 510760 China
| |
Collapse
|
42
|
Hangeland JJ, Abell LM, Adam LP, Jiang J, Friends TJ, Haque LE, Neels J, Onorato JM, Chen AYA, Taylor DS, Yin X, Harrity TW, Basso MD, Yang R, Sleph PG, Gordon DA, Huang CS, Wexler RR, Finlay HJ, Lawrence RM. PK/PD Disconnect Observed with a Reversible Endothelial Lipase Inhibitor. ACS Med Chem Lett 2018; 9:673-678. [PMID: 30034599 DOI: 10.1021/acsmedchemlett.8b00138] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 05/14/2018] [Indexed: 11/30/2022] Open
Abstract
Screening of a small set of nonselective lipase inhibitors against endothelial lipase (EL) identified a potent and reversible inhibitor, N-(3-(3,4-dichlorophenyl)propyl)-3-hydroxy-1-methyl-2-oxo-1,2-dihydropyridine-4-carboxamide (5; EL IC50 = 61 nM, ELHDL IC50 = 454 nM). Deck mining identified a related hit, N-(3-(3,4-dichlorophenyl)propyl)-4-hydroxy-1-methyl-5-oxo-2,5-dihydro-1H-pyrrole-3-carboxamide (6a; EL IC50 = 41 nM, ELHDL IC50 = 1760 nM). Both compounds were selective against lipoprotein lipase (LPL) but nonselective versus hepatic lipase (HL). Optimization of compound 6a for EL inhibition using HDL as substrate led to N-(4-(3,4-dichlorophenyl)butan-2-yl)-1-ethyl-4-hydroxy-5-oxo-2,5-dihydro-1H-pyrrole-3-carboxamide (7c; EL IC50 = 148 nM, ELHDL IC50 = 218 nM) having improved PK over compound 6a, providing a tool molecule to test for the ability to increase HDL-cholesterol (HDL-C) levels in vivo using a reversible EL inhibitor. Compound 7c did not increase HDL-C in vivo despite achieving plasma exposures targeted on the basis of enzyme activity and protein binding demonstrating the need to develop more physiologically relevant in vitro assays to guide compound progression for in vivo evaluation.
Collapse
Affiliation(s)
- Jon J. Hangeland
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Lynn M. Abell
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Leonard P. Adam
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Ji Jiang
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Todd J. Friends
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Lauren E. Haque
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - James Neels
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Joelle M. Onorato
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Alice Ye A. Chen
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - David S. Taylor
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Xiaohong Yin
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Thomas W. Harrity
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Michael D. Basso
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Richard Yang
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Paul G. Sleph
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - David A. Gordon
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Christine S. Huang
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Ruth R. Wexler
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - Heather J. Finlay
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| | - R. Michael Lawrence
- Research and Development, Bristol-Myers Squibb, Princeton, New Jersey 08543, United States
| |
Collapse
|
43
|
Anioke I, Okwuosa C, Uchendu I, Chijioke O, Dozie-Nwakile O, Ikegwuonu I, Kalu P, Okafor M. Investigation into Hypoglycemic, Antihyperlipidemic, and Renoprotective Potentials of Dennettia tripetala (Pepper Fruit) Seed in a Rat Model of Diabetes. BIOMED RESEARCH INTERNATIONAL 2017; 2017:6923629. [PMID: 29181401 PMCID: PMC5664378 DOI: 10.1155/2017/6923629] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 08/09/2017] [Indexed: 12/31/2022]
Abstract
This study investigated the hypoglycemic, antihyperlipidemic, and renoprotective potentials of Dennettia tripetala (DT) in a rat model of diabetes. The hypoglycemic activity in crude methanol seed extract of DT (CMEDT) and methanol seed fraction of DT (MFDT) measured by glucose oxidase method was increased by 47.37% and 28.72%, respectively, after 8 hours of administration. After 10 days of treatment, CMEDT and MFDT gave a good glycemic control with the highest percentage reduction of 75.82% and 71.34% in glucose level, respectively, which is closely compared with 79.91% in glibenclamide. Using the enzymatic assay and Friedewald's equation, there was a significant reduction in serum level of total cholesterol (TC), triglyceride (TG), very-low-density lipoprotein (VLDL), and low-density lipoprotein (LDL) and a significant increase in high-density lipoprotein (HDL) (p < 0.05) following treatment with CMEDT and MFDT, when compared with the untreated group, although results varied in dosed groups, with high dose of MFDT showing a better lipid-lowering activity. High dose of MFDT improved lipid metabolism and increased percentage protection against atherogenesis by 44%. However, neither CMEDT nor MFDT ameliorated the renal biochemical alteration in urea and creatinine. Thus, the study demonstrates hypoglycemic and antihyperlipidemic potentials of DT seed in diabetes.
Collapse
Affiliation(s)
- Innocent Anioke
- Department of Medical Laboratory Sciences, Faculty of Health Sciences and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| | - Chukwugozie Okwuosa
- Department of Medical Laboratory Sciences, Faculty of Health Sciences and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| | - Ikenna Uchendu
- Department of Medical Laboratory Sciences, Faculty of Health Sciences and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| | - Olive Chijioke
- Department of Medical Laboratory Sciences, Faculty of Health Sciences and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| | - Ogechukwu Dozie-Nwakile
- Department of Medical Laboratory Sciences, Faculty of Health Sciences and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| | - Ifeoma Ikegwuonu
- Department of Medical Laboratory Sciences, Faculty of Health Sciences and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| | - Peculiar Kalu
- Department of Chemical Pathology, College of Medicine, Nnamdi Azikiwe University, Nnewi, Nigeria
| | - Maryann Okafor
- Department of Medical Laboratory Sciences, Faculty of Health Sciences and Technology, College of Medicine, University of Nigeria, Enugu Campus, Enugu, Nigeria
| |
Collapse
|
44
|
Schilcher I, Kern S, Hrzenjak A, Eichmann TO, Stojakovic T, Scharnagl H, Duta-Mare M, Kratky D, Marsche G, Frank S. Impact of Endothelial Lipase on Cholesterol Efflux Capacity of Serum and High-density Lipoprotein. Sci Rep 2017; 7:12485. [PMID: 28970555 PMCID: PMC5624901 DOI: 10.1038/s41598-017-12882-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 08/15/2017] [Indexed: 12/31/2022] Open
Abstract
Endothelial lipase (EL) is a potent modulator of the structural and functional properties of HDL. Impact of EL on cholesterol efflux capacity (CEC) of serum and isolated HDL is not well understood and apparently contradictory data were published. Here, we systematically examined the impact of EL on composition and CEC of serum and isolated HDL, in vitro and in vivo, using EL-overexpressing cells and EL-overexpressing mice. CEC was examined in a validated assay using 3H-cholesterol labelled J774 macrophages. In vitro EL-modification of serum resulted in complex alterations, including enrichment of serum with lipid-free/-poor apoA-I, decreased size of human (but not mouse) HDL and altered HDL lipid composition. EL-modification of serum increased CEC, in line with increased lipid-free/-poor apoA-I formation. In contrast, CEC of isolated HDL was decreased likely through altered lipid composition. In contrast to in vitro results, EL-overexpression in mice markedly decreased HDL-cholesterol and apolipoprotein A-I serum levels associated with a decreased CEC of serum. HDL lipid composition was altered, but HDL particle size and CEC were not affected. Our study highlights the multiple and complex effects of EL on HDL composition and function and may help to clarify the seemingly contradictory data found in published articles.
Collapse
Affiliation(s)
- Irene Schilcher
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University Graz, Neue Stiftingtalstraße 6/6, 8010, Graz, Austria
| | - Sabine Kern
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010, Graz, Austria
| | - Andelko Hrzenjak
- Division of Pulmonology, Department of Internal Medicine, Medical University of Graz, Auenbruggerplatz 20, 8036, Graz, Austria.,Ludwig Boltzmann Institute for Lung Vascular Research, Stiftingtalstrasse 24, 8010, Graz, Austria
| | - Thomas O Eichmann
- Institute of Molecular Biosciences, University of Graz, Heinrichstrasse 31, 8010, Graz, Austria
| | - Tatjana Stojakovic
- Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria
| | - Hubert Scharnagl
- Institute of Medical and Chemical Laboratory Diagnostics, Medical University of Graz, Auenbruggerplatz 15, 8036, Graz, Austria
| | - Madalina Duta-Mare
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University Graz, Neue Stiftingtalstraße 6/6, 8010, Graz, Austria
| | - Dagmar Kratky
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University Graz, Neue Stiftingtalstraße 6/6, 8010, Graz, Austria.,BioTechMed-Graz, Graz, Austria
| | - Gunther Marsche
- Institute of Experimental and Clinical Pharmacology, Medical University of Graz, Universitätsplatz 4, 8010, Graz, Austria. .,BioTechMed-Graz, Graz, Austria.
| | - Saša Frank
- Institute of Molecular Biology and Biochemistry, Center of Molecular Medicine, Medical University Graz, Neue Stiftingtalstraße 6/6, 8010, Graz, Austria. .,BioTechMed-Graz, Graz, Austria.
| |
Collapse
|
45
|
Wang C, Nishijima K, Kitajima S, Niimi M, Yan H, Chen Y, Ning B, Matsuhisa F, Liu E, Zhang J, Chen YE, Fan J. Increased Hepatic Expression of Endothelial Lipase Inhibits Cholesterol Diet-Induced Hypercholesterolemia and Atherosclerosis in Transgenic Rabbits. Arterioscler Thromb Vasc Biol 2017; 37:1282-1289. [PMID: 28546217 DOI: 10.1161/atvbaha.117.309139] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 05/12/2017] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Endothelial lipase (EL) is a key determinant in plasma high-density lipoprotein-cholesterol. However, functional roles of EL on the development of atherosclerosis have not been clarified. We investigated whether hepatic expression of EL affects plasma lipoprotein metabolism and cholesterol diet-induced atherosclerosis. APPROACH AND RESULTS We generated transgenic (Tg) rabbits expressing the human EL gene in the liver and then examined the effects of EL expression on plasma lipids and lipoproteins and compared the susceptibility of Tg rabbits with cholesterol diet-induced atherosclerosis with non-Tg littermates. On a chow diet, hepatic expression of human EL in Tg rabbits led to remarkable reductions in plasma levels of total cholesterol, phospholipids, and high-density lipoprotein-cholesterol compared with non-Tg controls. On a cholesterol-rich diet for 16 weeks, Tg rabbits exhibited significantly lower hypercholesterolemia and less atherosclerosis than non-Tg littermates. In Tg rabbits, gross lesion area of aortic atherosclerosis was reduced by 52%, and the lesions were characterized by fewer macrophages and smooth muscle cells compared with non-Tg littermates. CONCLUSIONS Increased hepatic expression of EL attenuates cholesterol diet-induced hypercholesterolemia and protects against atherosclerosis.
Collapse
Affiliation(s)
- Chuan Wang
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Kazutoshi Nishijima
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Shuji Kitajima
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Manabu Niimi
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Haizhao Yan
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Yajie Chen
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Bo Ning
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Fumikazu Matsuhisa
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Enqi Liu
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Jifeng Zhang
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Y Eugene Chen
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.)
| | - Jianglin Fan
- From the Department of Molecular Pathology, Faculty of Medicine, Graduate Faculty of Interdisciplinary Research, Graduate School, University of Yamanashi, Japan (C.W., M.N., B.N., H.Y., Y.C., J.F.); Department of Pathology, Xi'an Medical University, China (B.N., J.F.); Animal Research Laboratory, Bioscience Education-Research Support Center, Akita University, Japan (K.N.); Analytical Research Center for Experimental Sciences, Saga University, Japan (S.K., F.M.); Research Institute of Atherosclerotic Disease and Laboratory Animal Center, Xi'an Jiaotong University School of Medicine, China (E.L.); and Center for Advanced Models for Translational Sciences and Therapeutics, University of Michigan Medical Center, Ann Arbor (J.Z., Y.E.C.).
| |
Collapse
|
46
|
Yu JE, Han SY, Wolfson B, Zhou Q. The role of endothelial lipase in lipid metabolism, inflammation, and cancer. Histol Histopathol 2017; 33:1-10. [PMID: 28540715 DOI: 10.14670/hh-11-905] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Endothelial lipase (LIPG) plays a critical role in lipoprotein metabolism, cytokine expression, and the lipid composition of cells. Thus far, the extensive investigations of LIPG have focused on its mechanisms and involvement in metabolic syndromes such as atherosclerosis. However, recent developments have found that LIPG plays a role in cancer. This review summarizes the field of LIPG study. We focus on the role of LIPG in lipid metabolism and the inflammatory response, and highlight the recent insights in its involvement in tumor progression. Finally, we discuss potential therapeutic strategies for targeting LIPG in cancer, and the therapeutic potential of LIPG as a drug target.
Collapse
Affiliation(s)
- Justine E Yu
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, USA
| | - Shu-Yan Han
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, USA.,Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Integration of Chinese and Western Medicine, Peking University Cancer Hospital and Institute, Beijing, People's Republic of China
| | - Benjamin Wolfson
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, USA
| | - Qun Zhou
- Department of Biochemistry and Molecular Biology, Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, USA.
| |
Collapse
|
47
|
Metabolic Syndrome Modulates Association between Endothelial Lipase and Lipid/Lipoprotein Plasma Levels in Acute Heart Failure Patients. Sci Rep 2017; 7:1165. [PMID: 28446761 PMCID: PMC5430647 DOI: 10.1038/s41598-017-01367-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 03/29/2017] [Indexed: 01/04/2023] Open
Abstract
We hypothesised that the established association of endothelial lipase (EL) plasma levels with atherogenic lipid profile is altered in acute heart failure (AHF) and additionally affected by overlapping metabolic syndrome (MetS). We examined the association of EL plasma levels and lipid/lipoprotein plasma levels in AHF patients without and with overlapping MetS. The study was performed as a single-centre, observational study on 152 AHF patients, out of which 85 had overlapping MetS. In the no-MetS group, EL plasma levels were significantly positively correlated with plasma levels of atherogenic lipids/lipoproteins, including total cholesterol, low-density lipoprotein (LDL)-cholesterol, total LDL particles and triglycerides, but also with plasma levels of antiatherogenic high-density lipoprotein (HDL)-cholesterol, total HDL particles and small HDL particles. In the MetS group, EL plasma levels were positively correlated with triglyceride and small LDL-particle levels, and significantly negatively correlated with plasma levels of large HDL particles as well as with LDL- and HDL-particle size, respectively. EL- and lipid/lipoprotein- plasma levels were different in the no-MetS patients, compared to MetS patients. The association of EL with atherogenic lipid profile is altered in AHF and additionally modified by MetS, which strongly modulates EL- and lipid/lipoprotein-plasma levels in AHF.
Collapse
|
48
|
Cai G, Zhang B, Ma C, Shi G, Weng W, Xue S. Associations of Rs3744841 and Rs3744843 Polymorphisms in Endothelial Lipase Gene with Risk of Coronary Artery Disease and Lipid Levels in a Chinese Population. PLoS One 2016; 11:e0162727. [PMID: 27612170 PMCID: PMC5017691 DOI: 10.1371/journal.pone.0162727] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2016] [Accepted: 08/26/2016] [Indexed: 12/13/2022] Open
Abstract
Objective The aim of the present study was to assess the association between the 2037T/C and 2237G/A polymorphisms in the EL gene and the risk of CAD and lipid levels in a Chinese population. Methods A case-control study including 706 patients with CAD and 315 controls was performed. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method was used to identify the genotypes. Results The EL 2037 T/C polymorphism was associated with CAD risk and HDL-C levels. No significant differences were found between the EL 2237 G/A genotypes and CAD risk and lipid levels in the whole population. However, carriers of the 2237 A allele had higher Apo A1 levels than those with the 2237 GG genotype and in the CAD subgroup (P = 0.044). The CAD cases have a significantly lower frequency of the C-G haplotypes than the controls, and the T-A haplotype was significantly more common in the CAD patients than in the controls. Conclusions Our study concluded that the EL 2037 T/C polymorphism was associated with CAD risk and HDL-C levels, and that the C allele might be a protective factor against CAD in the Chinese Han population. In addition, the EL 2237 A allele might be associated with an increased Apo A1 level in CAD subjects.
Collapse
Affiliation(s)
- Gaojun Cai
- Department of Cardiology, Wujin hospital affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
- * E-mail:
| | - Bifeng Zhang
- Department of Pathology and Molecular Medicine, McMaster University, Ontario, Canada
| | - Chunyan Ma
- Department of Cardiology, Wujin hospital affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| | - Ganwei Shi
- Department of Cardiology, Wujin hospital affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| | - Weijin Weng
- Department of Cardiology, Wujin hospital affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| | - Sheliang Xue
- Department of Cardiology, Wujin hospital affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| |
Collapse
|
49
|
Cai G, Zhang B, Shi G, Weng W, Yang L, Xue S. Endothelial lipase genetic polymorphisms and the lipid-lowering response in patients with coronary artery disease on rosuvastatin. Lipids Health Dis 2016; 15:148. [PMID: 27600285 PMCID: PMC5012091 DOI: 10.1186/s12944-016-0295-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 07/27/2016] [Indexed: 11/12/2022] Open
Abstract
Background Endothelial lipase (EL) plays an important role in the regulation of lipid metabolism by reducing the high density lipoprotein cholesterol (HDL-C) levels and inducing the macrophages to take up native low density lipoprotein cholesterol (LDL-C). Our purpose was to investigate the impact of EL genetic polymorphisms on the lipid-lowering effects of rosuvastatin in Chinese coronary artery disease (CAD) patients. Methods One hundred twenty-one unrelated CAD patients, who underwent the treatment with rosuvastatin (10mg/day) for four to eight weeks, were enrolled in this study. Before and after treatment, serum lipids levels were measured. Genotypes of EL 2037T/C and 2237 G/A polymorphisms were detected by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) method. Results Patients with EL 2037C allele (CC + CT) had significantly lower LDL-C levels than those with TT genotype (CC + CT: 2.60 ± 0.74 mmol/l; TT: 2.90 ± 0.87 mmol/l; P = 0.047), before rosuvastatin treatment. No significant differences between baseline lipid levels and the EL 2237G/A genotypes were observed. After treatment with rosuvastatin, total cholesterol (TC), high triglyceride (TG) and LDL-C levels decreased from baseline, on average, by 23.09 % (4.59 ± 0.96 mmol/l to 3.47 ± 0.83 mmol/l), 6.36 % (2.01 ± 1.18 mmol/l to 1.68 ± 1.16 mmol/l), 32.48 % (2.77 ± 0.83 mmol/l to 1.79 ± 0.62 mmol/l), respectively (all P < 0.05) in all patients. While changes in HDL-C levels did not reach statistical significance. No significant effects of EL 2037T/C or 2237G/A polymorphism were observed on lipid-lowering effects of rosuvastatin. Conclusions EL 2037T/C and 2237 G/A polymorphisms might not affect the lipid-owing effects of rosuvastatin in Chinese CAD patients. Electronic supplementary material The online version of this article (doi:10.1186/s12944-016-0295-3) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Gaojun Cai
- Department of Cardiology, Wujin Hospital Affiliated to Jiangsu University, Changzhou, Jiangsu Province, China.
| | - Bifeng Zhang
- Department of Pathology and Molecular Medicine, McMaster University, Ontario, Canada
| | - Ganwei Shi
- Department of Cardiology, Wujin Hospital Affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| | - Weijin Weng
- Department of Cardiology, Wujin Hospital Affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| | - Liping Yang
- Department of Cardiology, Wujin Hospital Affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| | - Sheliang Xue
- Department of Cardiology, Wujin Hospital Affiliated to Jiangsu University, Changzhou, Jiangsu Province, China
| |
Collapse
|
50
|
Lipidomic approach provides new clues toward solving the mystery of accelerated atherosclerosis in diabetes. Atherosclerosis 2016; 251:507-509. [DOI: 10.1016/j.atherosclerosis.2016.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Accepted: 06/03/2016] [Indexed: 11/23/2022]
|