1
|
Bermingham KM, Brennan L, Segurado R, Gray IJ, Barron RE, Gibney ER, Ryan MF, Gibney MJ, Newman JW, O'Sullivan DAM. Genetic and environmental influences on serum oxylipins, endocannabinoids, bile acids and steroids. Prostaglandins Leukot Essent Fatty Acids 2021; 173:102338. [PMID: 34500309 DOI: 10.1016/j.plefa.2021.102338] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 08/06/2021] [Accepted: 08/16/2021] [Indexed: 12/12/2022]
Abstract
Lipid bioactivity is a result of direct action and the action of lipid mediators including oxylipins, endocannabinoids, bile acids and steroids. Understanding the factors contributing to biological variation in lipid mediators may inform future approaches to understand and treat complex metabolic diseases. This research aims to determine the contribution of genetic and environmental influences on lipid mediators involved in the regulation of inflammation and energy metabolism. This study recruited 138 monozygotic (MZ) and dizygotic (DZ) twins aged 18-65 years and measured serum oxylipins, endocannabinoids, bile acids and steroids using liquid chromatography mass-spectrometry (LC-MS). In this classic twin design, the similarities and differences between MZ and DZ twins are modelled to estimate the contribution of genetic and environmental influences to variation in lipid mediators. Heritable lipid mediators included the 12-lipoxygenase products 12-hydroxyeicosatetraenoic acid [0.70 (95% CI: 0.12,0.82)], 12-hydroxyeicosatetraenoic acid [0.73 (95% CI: 0.30,0.83)] and 14‑hydroxy-docosahexaenoic acid [0.51 (95% CI: 0.07,0.71)], along with the endocannabinoid docosahexaenoy-lethanolamide [0.52 (95% CI: 0.15,0.72)]. For others such as 13-hydroxyoctadecatrienoic acid and lithocholic acid the contribution of environment to variation was stronger. With increased understanding of lipid mediator functions in health, it is important to understand the factors contributing to their variance. This study provides a comprehensive analysis of lipid mediators and extends pre-existing knowledge of the genetic and environmental influences on the human lipidome.
Collapse
MESH Headings
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/blood
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/genetics
- Adolescent
- Adult
- Aged
- Bile Acids and Salts/blood
- Bile Acids and Salts/genetics
- Dehydroepiandrosterone/blood
- Dehydroepiandrosterone/genetics
- Docosahexaenoic Acids/blood
- Docosahexaenoic Acids/genetics
- Eicosapentaenoic Acid/analogs & derivatives
- Eicosapentaenoic Acid/blood
- Eicosapentaenoic Acid/genetics
- Endocannabinoids/blood
- Endocannabinoids/genetics
- Fatty Acids, Omega-3/blood
- Fatty Acids, Omega-3/genetics
- Female
- Gene-Environment Interaction
- Humans
- Lipid Metabolism/genetics
- Male
- Middle Aged
- Oxylipins/blood
- Steroids/blood
- Twins, Dizygotic/genetics
- Twins, Monozygotic/genetics
- Young Adult
Collapse
Affiliation(s)
- K M Bermingham
- UCD Institute of Food and Health, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - L Brennan
- UCD Institute of Food and Health, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland; UCD Conway Institute, University College Dublin, Belfield, Dublin 4, Ireland
| | - R Segurado
- UCD School of Public Health, Physiotherapy and Sports Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - I J Gray
- Obesity and Metabolism Research Unit, United States Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, CA, USA; West Coast Metabolomics Center, UC Davis Genome Center, University of California Davis, Davis, CA, USA
| | - R E Barron
- UCD Institute of Food and Health, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - E R Gibney
- UCD Institute of Food and Health, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - M F Ryan
- UCD Institute of Food and Health, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - M J Gibney
- UCD Institute of Food and Health, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - J W Newman
- Obesity and Metabolism Research Unit, United States Department of Agriculture, Agricultural Research Service, Western Human Nutrition Research Center, Davis, CA, USA; West Coast Metabolomics Center, UC Davis Genome Center, University of California Davis, Davis, CA, USA; Dept of Nutrition, University of California Davis, Davis, CA, USA
| | - Dr A M O'Sullivan
- UCD Institute of Food and Health, School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| |
Collapse
|
2
|
Van Doren L, Nguyen N, Garzia C, Fletcher EK, Stevenson R, Jaramillo D, Kuliopulos A, Covic L. Lipid Receptor GPR31 (G-Protein-Coupled Receptor 31) Regulates Platelet Reactivity and Thrombosis Without Affecting Hemostasis. Arterioscler Thromb Vasc Biol 2021; 41:e33-e45. [PMID: 33267659 PMCID: PMC8108540 DOI: 10.1161/atvbaha.120.315154] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
OBJECTIVE 12-LOX (12-lipoxygenase) produces a number of bioactive lipids including 12(S)-HETE that are involved in inflammation and platelet reactivity. The GPR31 (G-protein-coupled receptor 31) is the proposed receptor of 12(S)-HETE; however, it is not known whether the 12(S)-HETE-GPR31 signaling axis serves to enhance or inhibit platelet activity. Approach and Results: Using pepducin technology and biochemical approaches, we provide evidence that 12(S)-HETE-GPR31 signals through Gi to enhance PAR (protease-activated receptor)-4-mediated platelet activation and arterial thrombosis using both human platelets and mouse carotid artery injury models. 12(S)-HETE suppressed AC (adenylyl cyclase) activity through GPR31 and resulted in Rap1 (Ras-related protein 1) and p38 activation and low but detectable calcium flux but did not induce platelet aggregation. A GPR31 third intracellular (i3) loop-derived pepducin, GPR310 (G-protein-coupled receptor 310), significantly inhibited platelet aggregation in response to thrombin, collagen, and PAR4 agonist, AYPGKF, in human and mouse platelets but relative sparing of PAR1 agonist SFLLRN in human platelets. GPR310 treatment gave a highly significant 80% protection (P=0.0018) against ferric chloride-induced carotid artery injury in mice by extending occlusion time, without any effect on tail bleeding. PAR4-mediated dense granule secretion and calcium flux were both attenuated by GPR310. Consistent with these results, GPR310 inhibited 12(S)-HETE-mediated and PAR4-mediated Rap1-GTP and RASA3 translocation to the plasma membrane and attenuated PAR4-Akt and ERK activation. GPR310 caused a right shift in thrombin-mediated human platelet aggregation, comparable to the effects of inhibition of the Gi-coupled P2Y12 receptor. Co-immunoprecipitation studies revealed that GPR31 and PAR4 form a heterodimeric complex in recombinant systems. CONCLUSIONS The 12-LOX product 12(S)-HETE stimulates GPR31-Gi-signaling pathways, which enhance thrombin-PAR4 platelet activation and arterial thrombosis in human platelets and mouse models. Suppression of this bioactive lipid pathway, as exemplified by a GPR31 pepducin antagonist, may provide beneficial protective effects against platelet aggregation and arterial thrombosis with minimal effect on hemostasis.
Collapse
Affiliation(s)
- Layla Van Doren
- Division of Hematology/Oncology, Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, MA (L.V.D., N.N., C.G., E.K.F., R.S., L.C., A.K.)
| | - Nga Nguyen
- Division of Hematology/Oncology, Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, MA (L.V.D., N.N., C.G., E.K.F., R.S., L.C., A.K.)
| | - Christopher Garzia
- Division of Hematology/Oncology, Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, MA (L.V.D., N.N., C.G., E.K.F., R.S., L.C., A.K.)
| | - Elizabeth K Fletcher
- Division of Hematology/Oncology, Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, MA (L.V.D., N.N., C.G., E.K.F., R.S., L.C., A.K.)
| | - Ryan Stevenson
- Division of Hematology/Oncology, Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, MA (L.V.D., N.N., C.G., E.K.F., R.S., L.C., A.K.)
| | | | - Athan Kuliopulos
- Division of Hematology/Oncology, Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, MA (L.V.D., N.N., C.G., E.K.F., R.S., L.C., A.K.)
- Departments of Medicine (L.C., A.K.), Tufts University School of Medicine, Boston, MA
- Biochemistry (L.C., A.K.), Tufts University School of Medicine, Boston, MA
| | - Lidija Covic
- Division of Hematology/Oncology, Center for Hemostasis and Thrombosis Research, Tufts Medical Center, Boston, MA (L.V.D., N.N., C.G., E.K.F., R.S., L.C., A.K.)
- Departments of Medicine (L.C., A.K.), Tufts University School of Medicine, Boston, MA
- Biochemistry (L.C., A.K.), Tufts University School of Medicine, Boston, MA
| |
Collapse
|
3
|
Lu Y, Fang J, Zou L, Cui L, Liang X, Lim SG, Dan YY, Ong CN. Omega-6-derived oxylipin changes in serum of patients with hepatitis B virus-related liver diseases. Metabolomics 2018; 14:26. [PMID: 30830341 DOI: 10.1007/s11306-018-1326-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 01/18/2018] [Indexed: 02/07/2023]
Abstract
INTRODUCTION Chronic hepatitis B virus (HBV) infection is the main etiologic risk factor for hepatocellular carcinoma (HCC). Early studies indicated that the increase of omega-6-derived oxylipins may be involved in the pathogenesis of HBV-related HCC, yet their changes during the distinct clinical phases of chronic HBV infection remain unclear. To fill this gap, in this study we investigated the omega-6-derived oxylipin profiles in patients with three major clinical stages of chronic HBV infection (chronic hepatitis B, liver cirrhosis, and HCC). METHODS Eighteen omega-6-derived oxylipins were quantified in serum samples of 34 patients with chronic hepatitis B, 46 patients with HBV-related liver cirrhosis, 38 patients with HBV-related HCC, and 50 healthy controls using liquid chromatography tandem mass spectrometry. RESULTS Seven oxylipins were found to be altered in patients with HBV-related liver diseases, including 9,10-dihydroxyoctadecenoic acid (9,10-DiHOME), 12,13-DiHOME, 14,15-dihydroxyeicosatrienoic acid (14,15-DiHETrE), 13-hydroxyoctadecadienoic acid (13-HODE), 12-hydroxyeicosatetraenoic acid (12-HETE), 11-HETE, and thromboxane B2 (TXB2). Of these, three oxylipins derived from the cytochrome P450 (CYP450) pathways including 9,10-DiHOME, 12,13-DiHOME, and 14,15-DiHETrE were found to be associated with the levels of α-fetoprotein (AFP), a tumor marker. In combination with AFP, age, and gender, a combination of these seven differential oxylipins could significantly enhance the prediction of HBV-related liver diseases, particularly for liver cirrhosis (p < 0.05). CONCLUSION This study for the first time shows the correlations between CYP450-derived oxylipins and the progression of chronic HBV infection, and sheds a new light on the surveillance of HBV-related live diseases using oxylipins.
Collapse
Affiliation(s)
- Yonghai Lu
- Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, Level 11, 12 Science Drive 2, Singapore, 117549, Singapore.
- Institute of Nutrition and Health, Qingdao University, Qingdao, Shandong, China.
| | - Jinling Fang
- Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, Level 11, 12 Science Drive 2, Singapore, 117549, Singapore
| | - Li Zou
- Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, Level 11, 12 Science Drive 2, Singapore, 117549, Singapore
| | - Liang Cui
- Singapore-MIT Alliance for Research & Technology (SMART), Singapore, Singapore
| | - Xu Liang
- NUS Environment Research Institute, National University of Singapore, Singapore, Singapore
| | - Seng Gee Lim
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119228, Singapore
| | - Yock-Young Dan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119228, Singapore.
| | - Choon Nam Ong
- Saw Swee Hock School of Public Health, National University of Singapore, Tahir Foundation Building, Level 11, 12 Science Drive 2, Singapore, 117549, Singapore
- NUS Environment Research Institute, National University of Singapore, Singapore, Singapore
| |
Collapse
|
4
|
Schuchardt JP, Ostermann AI, Stork L, Fritzsch S, Kohrs H, Greupner T, Hahn A, Schebb NH. Effect of DHA supplementation on oxylipin levels in plasma and immune cell stimulated blood. Prostaglandins Leukot Essent Fatty Acids 2017; 121:76-87. [PMID: 28651702 DOI: 10.1016/j.plefa.2017.06.007] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 06/12/2017] [Accepted: 06/13/2017] [Indexed: 01/25/2023]
Abstract
INTRODUCTION EPA and DHA cause different physiological effects, which are in many cases mediated via their oxidative metabolites (oxylipins). However, metabolism studies investigating the effect of either EPA or DHA on comprehensive oxylipin patterns are lacking. MATERIAL AND METHODS The short and long term (1, 3, 6, and 12 week) effect of 1076mg/d DHA (free of EPA) on free (unesterified) oxylipin concentrations in plasma and lipopolysacharid (LPS) stimulated blood of 12 healthy men (mean age 25.1 ± 1.5 years) was investigated. RESULTS After DHA supplementation, plasma levels of all DHA-oxylipins (HDHAs, EpDPEs, DiHDPEs) significantly increased (up to 600%) in a time-dependent fashion. Oxylipins of EPA and arachidonic acid (AA) were also affected. Whereas a slight increase in several EPA-derived hydroxy-FAs (including the RvE1 precursor 18-HEPE) and dihydroxy-FAs was observed after DHA supplementation, a trend to a slight decline in AA-derived oxylipin levels was found. In LPS stimulated blood, it is shown that DHA supplementation significantly reduces the ability of immune cells to form AA-derived COX (TXB2 and PGB2) and 12-LOX (12-HETE) eicosanoids. While no increase in EPA COX metabolites was found, n-3 PUFA 12-LOX metabolites of EPA (12-HEPE) and DHA (14-HDHA) were highly induced. CONCLUSION We demonstrated that DHA supplementation causes a time-dependent shift in the entire oxylipin profile suggesting a cross-linked metabolism of PUFAs and subsequent formation of oxygenated lipid mediators.
Collapse
Affiliation(s)
- Jan Philipp Schuchardt
- Institute of Food Science and Human Nutrition, Faculty of Natural Sciences, Leibniz University Hannover, Germany.
| | - Annika I Ostermann
- Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany
| | - Lisa Stork
- Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany
| | - Sabrina Fritzsch
- Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany
| | - Heike Kohrs
- Institute of Food Science and Human Nutrition, Faculty of Natural Sciences, Leibniz University Hannover, Germany
| | - Theresa Greupner
- Institute of Food Science and Human Nutrition, Faculty of Natural Sciences, Leibniz University Hannover, Germany
| | - Andreas Hahn
- Institute of Food Science and Human Nutrition, Faculty of Natural Sciences, Leibniz University Hannover, Germany
| | - Nils Helge Schebb
- Institute for Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany; Faculty of Mathematics and Natural Sciences, University of Wuppertal, Germany
| |
Collapse
|
5
|
Hennessy E, Rakovac Tisdall A, Murphy N, Carroll A, O'Gorman D, Breen L, Clarke C, Clynes M, Dowling P, Sreenan S. Elevated 12-hydroxyeicosatetraenoic acid (12-HETE) levels in serum of individuals with newly diagnosed Type 1 diabetes. Diabet Med 2017; 34:292-294. [PMID: 27353008 DOI: 10.1111/dme.13177] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/27/2016] [Indexed: 11/29/2022]
Affiliation(s)
- E Hennessy
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
| | - A Rakovac Tisdall
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
- Connolly Hospital Blanchardstown, Dublin, Ireland
| | - N Murphy
- Children's University Hospital, Dublin, Ireland
| | - A Carroll
- Children's University Hospital, Dublin, Ireland
| | - D O'Gorman
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
- Centre for Preventive Medicine, School of Health and Human Performance, Dublin City University, Dublin, Ireland
| | - L Breen
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
- Centre for Preventive Medicine, School of Health and Human Performance, Dublin City University, Dublin, Ireland
| | - C Clarke
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
| | - M Clynes
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
| | - P Dowling
- National Institute for Cellular Biotechnology, Dublin City University, Dublin, Ireland
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
- Department of Biology, Maynooth University, Dublin, Ireland
| | - S Sreenan
- 3U Diabetes, Dublin City University, Royal College of Surgeons in Ireland, Maynooth University, Dublin, Ireland
- Connolly Hospital Blanchardstown, Dublin, Ireland
| |
Collapse
|
6
|
Malan L, Baumgartner J, Calder PC, Smuts CM. Low immune cell ARA and high plasma 12-HETE and 17-HDHA in iron-deficient South African school children with allergy. Prostaglandins Leukot Essent Fatty Acids 2016; 110:35-41. [PMID: 27255641 DOI: 10.1016/j.plefa.2016.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 05/11/2016] [Accepted: 05/11/2016] [Indexed: 01/20/2023]
Abstract
Allergy has been associated with altered fatty acid and inflammatory status. In this cross-sectional study of 321 rural iron deficient (ID) South African children (aged 6-11 years), a subsample (n=111) of children with parent-reported allergy data were divided into an allergic (n=30) and non-allergic (n=81) group and compared. PBMC arachidonic acid (ARA; P=0.010) and the PBMC ARA to dihomo-gamma-linolenic acid (DGLA) ratio (P=0.035) were lower in the allergic children. Plasma 12-hydroxyeicosatetraenoic acid and 17-hydroxydocosahexaenoic acid (17-HDHA) were higher (P=0.040 and 0.020, respectively) in the allergic group. Thus, a fatty acid composition and lipid mediator levels indicative of increased release of ARA from PBMC membranes, increased inflammation as well as the resolving thereof, were associated with parent-reported allergy symptoms. This study used baseline data of an intervention study which was registered at clinicaltrials.gov as NCT01092377.
Collapse
Affiliation(s)
- L Malan
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, South Africa.
| | - J Baumgartner
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, South Africa
| | - P C Calder
- The Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; NIHR Southampton Biomedical Research Centre in Nutrition, Southampton University Hospital NHS Foundation Trust and University of Southampton, Southampton, United Kingdom
| | - C M Smuts
- Centre of Excellence for Nutrition, North-West University, Potchefstroom, South Africa
| |
Collapse
|
7
|
Squellerio I, Porro B, Songia P, Veglia F, Caruso D, Tremoli E, Cavalca V. Liquid chromatography-tandem mass spectrometry for simultaneous measurement of thromboxane B2 and 12(S)-hydroxyeicosatetraenoic acid in serum. J Pharm Biomed Anal 2014; 96:256-62. [PMID: 24786190 DOI: 10.1016/j.jpba.2014.04.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2014] [Revised: 03/31/2014] [Accepted: 04/03/2014] [Indexed: 11/17/2022]
Abstract
Arachidonic acid (AA) is metabolized in human platelets by two main pathways: via cyclooxygenase (COX-1) to prostaglandins and thromboxane (TX)A2 and via 12-lipoxygenase (12-LOX) to 12(S)-hydroxyeicosatetraenoic acid (12(S)-HETE). While COX products are known to regulate platelet reactivity, the role of 12-LOX metabolites is still controversial. To better understand the platelet enzymatic pathways, we developed a simple and sensitive liquid chromatography-tandem mass spectrometry (LC-MS/MS) assay for the simultaneous measurement of both platelet metabolites in human serum. After the addition of deuterated d4-TXB2 and d8-12(S)-HETE as internal standards and the solid-phase extraction of serum samples, analytes were resolved using reversed-phase C18 column and quantified using negative ion electrospray ionization-tandem mass spectrometry. Intra and interassay imprecisions were less than 10% for both analytes. The lower limits of quantification were 0.244ng/ml and 0.976ng/ml for TXB2 and 12(S)-HETE, respectively. This method was applied to measure platelet metabolites in healthy subjects (n=35). LC-MS/MS allows rapid, simultaneous, sensitive and accurate quantification of both platelet AA products in human serum with a small sample volume required and a minimal sample preparation.
Collapse
Affiliation(s)
| | - Benedetta Porro
- Centro Cardiologico Monzino-IRCCS, Via Parea 4, 20138 Milan, Italy.
| | - Paola Songia
- Centro Cardiologico Monzino-IRCCS, Via Parea 4, 20138 Milan, Italy.
| | - Fabrizio Veglia
- Centro Cardiologico Monzino-IRCCS, Via Parea 4, 20138 Milan, Italy.
| | - Donatella Caruso
- Università degli Studi di Milano, Dipartimento di Scienze Farmacologiche e Biomolecolari, Via Balzaretti 9, 20100 Milan, Italy.
| | - Elena Tremoli
- Centro Cardiologico Monzino-IRCCS, Via Parea 4, 20138 Milan, Italy; Università degli Studi di Milano, Dipartimento di Scienze Farmacologiche e Biomolecolari, Via Balzaretti 9, 20100 Milan, Italy.
| | - Viviana Cavalca
- Centro Cardiologico Monzino-IRCCS, Via Parea 4, 20138 Milan, Italy; Università degli Studi di Milano, Dipartimento di Scienze Cliniche e di Comunità, Via Parea 4, 20138 Milan, Italy.
| |
Collapse
|
8
|
Schuchardt JP, Schmidt S, Kressel G, Dong H, Willenberg I, Hammock BD, Hahn A, Schebb NH. Comparison of free serum oxylipin concentrations in hyper- vs. normolipidemic men. Prostaglandins Leukot Essent Fatty Acids 2013; 89:19-29. [PMID: 23694766 PMCID: PMC4057063 DOI: 10.1016/j.plefa.2013.04.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2012] [Revised: 02/05/2013] [Accepted: 04/02/2013] [Indexed: 10/26/2022]
Abstract
Oxylipins, the oxidation products of unsaturated fatty acids (FA), are potent endogenous mediators being involved in the regulation of various biological processes such as inflammation, pain and blood coagulation. Compared to oxylipins derived from arachidonic acid (AA) by cyclooxygenase action, i.e. prostanoides, only limited information is available about the endogenous levels of hydroxy-, epoxy- and dihydroxy-FA of linoleic acid (LA), AA, α-linolenic acid (ALA), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in humans. Particularly, it is unknown how metabolic disorders affect endogenous oxylipin levels in humans. Therefore, in the present study we compared the serum concentrations of 44 oxylipins in 20 normolipidemic with 20 hyperlipidemic (total cholesterol >200 mg/dl; LDL-C>130 mg/dl; TG>150 mg/dl) men (age 29-51 y). The serum concentration varied strongly among subjects. For most hydroxy-, epoxy- and dihydroxy-FA the concentrations were comparable to those in plasma reported in earlier studies. Despite the significant change in blood lipid levels the hyperlipidemic group showed only minor differences in oxylipin levels. The hyperlipidemic subjects had a slightly higher serum concentration of 8,9-DiHETrE, 5-HEPE, 10,11-DiHDPE, and a lower concentration of 12,13-DiHOME, 12-HETE, 9,10-DiHODE, and 12,13-DiHODE compared to normolipidemic subjects. Overall the hydroxy-, epoxy- and dihydroxy-FA levels were not changed suggesting that mild combined hyperlipidemia has no apparent effect on the concentration of circulating oxylipins. By contrast, serum levels of several hydroxy-, epoxy-, and dihydroxy-FA are dependent on the individual status of the parent FA. Particularly, a strong correlation between the EPA content in the erythrocyte membrane and the serum concentration of EPA derived oxylipins was observed. Given that the synthesis of EPA from other n-3 FA in humans is low; this suggests that oxylipin levels can be directly influenced by the diet.
Collapse
Affiliation(s)
| | - Simone Schmidt
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Germany
| | - Gaby Kressel
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Germany
| | - Hua Dong
- Department of Entomology and Cancer Center, University of California, Davis, CA, USA
| | - Ina Willenberg
- Institute of Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany
| | - Bruce D. Hammock
- Department of Entomology and Cancer Center, University of California, Davis, CA, USA
| | - Andreas Hahn
- Institute of Food Science and Human Nutrition, Leibniz University Hannover, Germany
| | - Nils Helge Schebb
- Institute of Food Toxicology and Analytical Chemistry, University of Veterinary Medicine Hannover, Germany
- Corresponding authors address: Bischofsholer Damm 15, 30173 Hannover, Germany, Tel.: +49511 856 7780; Fax: +49511 856 7409,
| |
Collapse
|
9
|
Zhang HJ, Sun CH, Kuang HY, Jiang XY, Liu HL, Hua WF, Liu ZJ, Zhou H, Sui H, Qi R. 12S-hydroxyeicosatetraenoic acid levels link to coronary artery disease in Type 2 diabetic patients. J Endocrinol Invest 2013; 36:385-9. [PMID: 23095287 DOI: 10.3275/8654] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
BACKGROUND 12(S)-Hydroxyeicosatetraenoic acid (12(S)-HETE) is a metabolite of arachidonic acid. 12(S)-HETE is involved in the pathogenesis of atherosclerosis and diabetes. However, the correlation between 12(S)-HETE and coronary artery disease (CAD) in the diabetic patient is unclear. AIMS The study investigated the relationship between 12(S)-HETE and CAD in Type 2 diabetes (T2D). METHODS Plasma 12(S)- HETE levels were detected by enzyme-linked immunosorbent assay in 103 healthy controls (control), 109 diabetic patients without CAD (diabetic), and 152 diabetic patients with CAD (diabetic-CAD). RESULTS 12(S)-HETE levels were higher in both diabetic and diabetic-CAD groups compared to control and in the diabetic-CAD group compared to the diabetic group. In the multiple linear stepwise regression analysis, 12(S)-HETE levels correlated independently with CAD, systolic blood pressure, and glycated hemoglobin. CONCLUSIONS These results indicate that 12(S)-HETE levels are increased in diabetic patients with CAD, suggesting a role for atherosclerosis in T2D.
Collapse
Affiliation(s)
- H J Zhang
- Department of Endocrinology, First Affiliated Hospital of Harbin Medical University, Harbin, China
| | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Dołegowska B, Pikuła E, Safranow K, Olszewska M, Jakubowska K, Chlubek D, Gutowski P. Metabolism of eicosanoids and their action on renal function during ischaemia and reperfusion: the effect of alprostadil. Prostaglandins Leukot Essent Fatty Acids 2006; 75:403-11. [PMID: 17011760 DOI: 10.1016/j.plefa.2006.07.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2006] [Accepted: 07/16/2006] [Indexed: 11/28/2022]
Abstract
Eicosanoids, active metabolites of arachidonic acid (AA), play an important role in the regulation of renal haemodynamics and glomerular filtration. Our study verified the hypothesis on the positive action of exogenously administered PGE(1) on renal function during an operation with temporary ischaemia of the lower half of the body. Also the effect of alprostadil (prostaglandin E(1) analogue) administered during the operation of an abdominal aorta aneurysm on the postoperative systemic metabolism of AA and the glomerular filtration rate (GFR) was investigated. The study included 42 patients with a diagnosed abdominal aorta aneurysm who have been qualified for the operation of implantation of the aortic prosthesis. The patients were randomly assigned to two groups: the study group (I) receiving alprostadil and the control group (II) without alprostadil. The levels of hydroxyeicosatetraenoic acids (15-HETE, 12-HETE, 5-HETE) were determined by RP-HPLC and the level of thromboxane B(2) (TxB(2)) was determined by ELISA in the plasma of the blood drawn from vena cava superior immediately before aortic clamping (A) and 5 min after aortic declamping (B). The administration of PGE(1) affects the metabolism of 15-HETE in a manner dependent on the baseline value of GFR but does not significantly change the postoperative renal function. The metabolism of 15-HETE is affected by the baseline value of GFR1 and a longer period of ischaemia is correlated with lower concentrations of 5-HETE during reperfusion. The results of our studies indicate that TxB(2) influences the postoperative function of kidneys.
Collapse
Affiliation(s)
- B Dołegowska
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Al. Powstancow Wlkp. 72, 70-111 Szzecin, Poland.
| | | | | | | | | | | | | |
Collapse
|
11
|
Coffey MJ, Jarvis GE, Gibbins JM, Coles B, Barrett NE, Wylie ORE, O'Donnell VB. Platelet 12-lipoxygenase activation via glycoprotein VI: involvement of multiple signaling pathways in agonist control of H(P)ETE synthesis. Circ Res 2004; 94:1598-605. [PMID: 15142951 DOI: 10.1161/01.res.0000132281.78948.65] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Lipoxygenases (LOX) contribute to vascular disease and inflammation through generation of bioactive lipids, including 12-hydro(pero)xyeicosatetraenoic acid (12-H(P)ETE). The physiological mechanisms that acutely control LOX product generation in mammalian cells are uncharacterized. Human platelets that contain a 12-LOX isoform (p12-LOX) were used to define pathways that activate H(P)ETE synthesis in the vasculature. Collagen and collagen-related peptide (CRP) (1 to 10 microg/mL) acutely induced platelet 12-H(P)ETE synthesis. This implicated the collagen receptor glycoprotein VI (GPVI), which signals via the immunoreceptor-based activatory motif (ITAM)-containing FcRgamma chain. Conversely, thrombin only activated at high concentrations (> 0.2 U/mL), whereas U46619 and ADP alone were ineffective. Collagen or CRP-stimulated 12-H(P)ETE generation was inhibited by staurosporine, PP2, wortmannin, BAPTA/AM, EGTA, and L-655238, implicating src-tyrosine kinases, PI3-kinase, Ca2+ mobilization, and p12-LOX translocation. In contrast, protein kinase C (PKC) inhibition potentiated 12-H(P)ETE generation. Finally, activation of the immunoreceptor tyrosine-based inhibitory motif (ITIM)-containing platelet endothelial cell adhesion molecule (PECAM-1) inhibited p12-LOX product generation. This study characterizes a receptor-dependent pathway for 12-H(P)ETE synthesis via the collagen receptor GPVI, which is negatively regulated by PECAM-1 and PKC, and demonstrates a novel link between immune receptor signaling and lipid mediator generation in the vasculature.
Collapse
MESH Headings
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/biosynthesis
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/blood
- 15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic Acid/pharmacology
- Adenosine Diphosphate/pharmacology
- Amino Acid Motifs
- Arachidonate 12-Lipoxygenase/blood
- Arachidonate 12-Lipoxygenase/metabolism
- Arachidonic Acid/pharmacology
- Blood Platelets/drug effects
- Blood Platelets/enzymology
- Calcimycin/pharmacology
- Calcium Signaling/drug effects
- Carrier Proteins/pharmacology
- Collagen/pharmacology
- Cyclooxygenase 1
- Egtazic Acid/analogs & derivatives
- Egtazic Acid/pharmacology
- Enzyme Activation/drug effects
- Enzyme Inhibitors/pharmacology
- Humans
- Inflammation/immunology
- Isoenzymes/physiology
- Leukotrienes/biosynthesis
- Leukotrienes/blood
- Leukotrienes/metabolism
- Membrane Proteins
- Peptides/pharmacology
- Phosphorylation/drug effects
- Platelet Activation/drug effects
- Platelet Endothelial Cell Adhesion Molecule-1/physiology
- Platelet Membrane Glycoproteins/physiology
- Prostaglandin-Endoperoxide Synthases/physiology
- Protein Kinase C/antagonists & inhibitors
- Protein Kinase C/physiology
- Protein Processing, Post-Translational/drug effects
- Protein Transport/drug effects
- Quinolines/pharmacology
- Receptors, IgG/physiology
- Thrombin/pharmacology
- p38 Mitogen-Activated Protein Kinases/antagonists & inhibitors
- p38 Mitogen-Activated Protein Kinases/physiology
Collapse
Affiliation(s)
- Marcus J Coffey
- Department of Medical Biochemistry and Immunology, University of Wales College of Medicine, Heath Park, Cardiff, UK.
| | | | | | | | | | | | | |
Collapse
|
12
|
Wong DA, Kita Y, Uozumi N, Shimizu T. Discrete role for cytosolic phospholipase A(2)alpha in platelets: studies using single and double mutant mice of cytosolic and group IIA secretory phospholipase A(2). J Exp Med 2002; 196:349-57. [PMID: 12163563 PMCID: PMC2193944 DOI: 10.1084/jem.20011443] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Among several different types of phospholipase A(2) (PLA(2)), cytosolic PLA(2) (cPLA(2))alpha and group IIA (IIA) secretory PLA(2) (sPLA(2)) have been studied intensively. To determine the discrete roles of cPLA(2)alpha in platelets, we generated two sets of genetically engineered mice (cPLA(2)alpha(-/-)/sPLA(2)-IIA(-/-) and cPLA(2)alpha(-/-)/sPLA(2)-IIA(+/+)) and compared their platelet function with their respective wild-type C57BL/6J mice (cPLA(2)alpha(+/+)/sPLA(2)-IIA(-/-)) and C3H/HeN (cPLA(2)alpha(+/+)/sPLA(2)-IIA(+/+)). We found that cPLA(2)alpha is needed for the production of the vast majority of thromboxane (TX)A(2) with collagen stimulation of platelets. In cPLA(2)alpha-deficient mice, however, platelet aggregation in vitro is only fractionally decreased because small amounts of TX produced by redundant phospholipase enzymes sufficiently preserve aggregation. In comparison, adenosine triphosphate activation of platelets appears wholly independent of cPLA(2)alpha and sPLA(2)-IIA for aggregation or the production of TX, indicating that these phospholipases are specifically linked to collagen receptors. However, the lack of high levels of TX limiting vasoconstriction explains the in vivo effects seen: increased bleeding times and protection from thromboembolism. Thus, cPLA(2)alpha plays a discrete role in the collagen-stimulated production of TX and its inhibition has a therapeutic potential against thromboembolism, with potentially limited bleeding expected.
Collapse
Affiliation(s)
- Dennis A Wong
- Department of Biochemistry and Molecular Biology, and Core Research and Evolutional Science and Technology, The University of Tokyo, Japan
| | | | | | | |
Collapse
|
13
|
Chumak A, Thevenon C, Gulaya N, Guichardant M, Margitich V, Bazyka D, Kovalenko A, Lagarde M, Prigent AF. Monohydroxylated fatty acid content in peripheral blood mononuclear cells and immune status of people at long times after the Chernobyl accident. Radiat Res 2001; 156:476-87. [PMID: 11604060 DOI: 10.1667/0033-7587(2001)156[0476:mfacip]2.0.co;2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The monohydroxylated fatty acid content of peripheral blood mononuclear cells from 23 cleanup workers and 16 unexposed individuals was studied in relation to their immune status after the Chernobyl accident. Men with absorbed doses below 0.32 Gy showed higher levels of free and esterified 12-hydroxyeicosatetraenoic acid (12-HETE) than unexposed men, whereas 15-HETE and the 17-hydroxy derivative of C22 fatty acid (17-OH 22), either free or esterified in phospholipids, were increased in a dose-dependent manner. The percentage of CD4-positive cells was also increased significantly in heavily irradiated men, whereas the percentage of CD8-positive cells tended to decrease with dose. Furthermore, the absolute count of CD4-positive cells was correlated positively with the amount of esterified 15-HETE in the phospholipid fraction of the mononuclear cells and with the total 15-HETE. These results show for the first time that the accumulation of autoxidized/lipoxygenase products of polyunsaturated fatty acids in the mononuclear cells of irradiated individuals was associated with immune imbalance. This may be the basis for certain late effects of radiation such as autoimmune disorders, somatic and neoplastic diseases, and early aging.
Collapse
Affiliation(s)
- A Chumak
- Research Center for Radiation Medicine of the Academy of Medical Sciences of Ukraine, 53 Melnikov Street, Kyiv 04050, Ukraine
| | | | | | | | | | | | | | | | | |
Collapse
|
14
|
Abstract
The platelet-type 12-lipoxygenase (12-LO) catalyzes the transformation of arachidonic acid into 12-hydroperoxyeicosatetraenoic acid [12-(S)HPETE], which is reduced to 12-hydroxyeicosatetraenoic acid [12-(S)HETE]. These metabolites exhibit a variety of biological activities such as mediation of angiotensin II-induced intracellular calcium transients in cultured rat vascular smooth muscle cells. It has recently been reported that platelet 12(S)-HETE production is enhanced in the spontaneously hypertensive rat. The pronounced hypotensive effect of LO inhibition in SHR suggests that LO activity may play a role in this form of hypertension. The aim of this study was to determine the basal and thrombin-induced platelet 12(S)-HETE production and the urinary 12(S)-HETE excretion in essential hypertension. We studied 19 patients with this disease (57+/-2 years of age) and 9 normotensive control subjects (48+/-5 years of age) (P:=0.074). 12(S)-HETE was measured in Sep-Pack-extracted samples with specific ELISA and high-performance liquid chromatography. The platelet basal level of 12(S)-HETE was significantly higher in patients than in control subjects (3.56+/-1.22 versus 0.64+/-0.13 ng/10(6) platelets, P:<0.025). In contrast, there were no differences in thrombin-stimulated (1 U/mL) 12(S)-HETE generation: 7.66+/-2.14 in patients versus 4.87+/-1.46 in control subjects (P:=0.61). Platelet 12-LO protein levels, measured by Western blotting with a polyclonal antibody, were higher in the patients than in the control subjects. The urinary excretion of 12(S)-HETE was higher in patients than in control subjects: 36.8+/-7.24 versus 17.1+/-3.14 ng/mg creatinine (P:<0.01). These results indicate that 12(S)-HETE levels and 12-LO protein are increased in patients with essential hypertension, suggesting a role for this metabolite in human hypertension.
Collapse
Affiliation(s)
- D González-Núñez
- Servicio de Nefrología, Laboratorio de Hormonología (D.G.-N., F.R.), Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Hospital Clínic, Barcelona, Spain
| | | | | | | |
Collapse
|
15
|
Fujimoto Y, Sakuma S, Iba Y, Sasaki T, Fujita T. Tetrahydrobiopterin attenuates modulation of platelet 12-lipoxygenase and cyclooxygenase activities by nitric oxide. Nitric Oxide 2001; 5:77-81. [PMID: 11178940 DOI: 10.1006/niox.2000.0318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Endothelial cells secrete large amounts of 5,6,7,8-tetrahydrobiopterin (BH(4)) in septic conditions. BH(4) is a cofactor for nitric oxide (NO) synthase and an essential regulator of its activity. We recently showed that NO can be a modulator of both platelet 12-lipoxygenase and cyclooxygenase activities. In the present study, we investigated the effect of BH(4) on the activities of 12-lipoxygenase and cyclooxygenase in rabbit platelets. The influence of BH(4) on NO-induced modulation of these enzyme activities was investigated. Exogenous BH(4) did not affect platelet 12-lipoxygenase and cyclooxygenase activities. The modulatory effects of NO on the two enzymatic pathways were reversed by addition of BH(4) but not by reduced glutathione. These results suggest that exogenous BH(4) is not essential for NO synthase activity of platelets, but that it is an important regulator of the action of NO released from other sources on platelet 12-lipoxygenase and cyclooxygenase activities.
Collapse
Affiliation(s)
- Y Fujimoto
- Department of Hygienic Chemistry, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan.
| | | | | | | | | |
Collapse
|
16
|
Kawasaki K, Komori K, Okazaki J, Ozeki Y, Sugimachi K. Inhibition of 12(S)-hydroxyeicosatetraenoic acid (12-HETE) production suppressed the intimal hyperplasia caused by poor-runoff conditions in the rabbit autologous vein grafts. J Cardiovasc Pharmacol 2000; 36:555-63. [PMID: 11065214 DOI: 10.1097/00005344-200011000-00003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The efficacy of OPC-29030, a newly developed inhibitor of 12(S)-hydroxyeicosatetraenoic acid (12-HETE) production, was evaluated on intimal hyperplasia of experimental autologous vein grafts in a distal poor-runoff model and a hyperlipidemic model in rabbits. First, rabbits were divided into two groups, the distal poor-runoff group (PR group) and the hyperlipidemic group (HL group). After 4 weeks preparing the PR model and the HL model, the femoral vein was implanted into the ipsilateral femoral artery. Then they were subdivided into two groups, depending on the diet provided; diet group with 0.1% OPC-29030 (OPC-29030 group) and normal diet group (control group). At 4 weeks, the grafts were harvested, and intimal hyperplasia of the graft was measured with an ocular cytometer. Intimal cell proliferation was determined by bromodeoxyuridine (BrdU) incorporation at 2 weeks after surgery. In addition, the effect of OPC-29030 on the proliferation or migration of rat aortic smooth muscle cells in culture was investigated. In the in vivo study in the PR group, the intimal hyperplasia and the plasma 12-HETE levels in the OPC-29030 group were significantly inhibited, compared with those of the control group. However, in the HL group, the intimal hyperplasia in both the OPC-29030 and control groups showed a remarkable degree of intimal hyperplasia. There was no significant difference between those two groups. Furthermore, there was no significant difference in the plasma 12-HETE levels in the HL group irrespective of the presence of OPC-29030. The BrdU labeling index at 2 weeks after grafting was significantly lower in the OPC-29030 group compared with that in the control group in the PR group. In the in vitro study, OPC-29030 did not inhibit smooth muscle cell proliferation; however, OPC-29030 inhibited the migration. These results demonstrate the efficacy of OPC-29030 in reducing the degree of intimal hyperplasia under PR conditions, but not under hyperlipidemic conditions. The mechanism of reducing the intimal hyperplasia may be that OPC-29030 inhibited 12-HETE production, which did not inhibit proliferation while inhibiting migration of the smooth muscle cell. These results suggested the possible involvement of 12-HETE with the intimal hyperplasia under PR conditions.
Collapse
Affiliation(s)
- K Kawasaki
- Department of Surgery and Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | |
Collapse
|
17
|
Akiba S, Murata T, Kitatani K, Sato T. Involvement of lipoxygenase pathway in docosapentaenoic acid-induced inhibition of platelet aggregation. Biol Pharm Bull 2000; 23:1293-7. [PMID: 11085354 DOI: 10.1248/bpb.23.1293] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The effects of docosapentaenoic acid (DPA) on platelet aggregation and arachidonic acid metabolism were studied in comparison to those of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). Collagen- or arachidonic acid-stimulated platelet aggregation was inhibited dose-dependently by n-3 fatty acids, among which DPA was the most potent inhibitor. These fatty acids inhibited U46619-induced aggregation but to almost the same extent. No effect of the acids on thrombin-induced aggregation was observed. Furthermore, these fatty acids suppressed thromboxane A2 formation by platelets which were exposed to collagen or thrombin, or by platelets to which arachidonic acid was added. In these experiments also, DPA was the most potent inhibitor, whereas DHA was the most effective inhibitor of cyclooxygenase-1 activity. DPA enhanced formation of 12-hydroxyeicosatetraenoic acid in response to collagen or from arachidonic acid by intact platelets, while the other two acids had less of an effect. These results suggest that DPA possesses potent activity for interfering with the cyclooxygenase pathway and accelerating the lipoxygenase pathway, thus inhibiting platelet aggregation most effectively.
Collapse
Affiliation(s)
- S Akiba
- Department of Pathological Biochemistry, Kyoto Pharmaceutical University, Misasagi, Yamashina-ku, Kyoto 607-8414, Japan
| | | | | | | |
Collapse
|
18
|
Abstract
OBJECTIVE AND DESIGN Altered platelet responsiveness has been demonstrated in human atopic dermatitis. This study has compared the in vitro function of platelets from normal ponies and those with the allergic skin disease, sweet itch. SUBJECTS Ponies with a clinical history of sweet itch and normal ponies were used as blood donors. METHODS PAF and ADP-induced platelet aggregation was measured and TxB2 production quantitated at the time of maximal aggregation; 12-HETE was additionally measured in some samples. Agonist-induced release of 3[H]5-HT was also studied. RESULTS Although both PAF and ADP caused equine platelet aggregation, only PAF stimulated eicosanoid and 5-HT release. There were no differences between the responses of platelets from allergic and normal ponies to PAF or ADP (analysis of variance). CONCLUSIONS There is no evidence of altered platelet responsiveness in ponies with sweet itch. The profile of responses to PAF and ADP suggest differential activation of intracellular signalling pathways in equine platelets.
Collapse
Affiliation(s)
- S R Bailey
- The Royal Veterinary College, Department of Veterinary Basic Sciences, North Mymms, Hertfordshire, United Kingdom
| | | | | | | |
Collapse
|
19
|
Affiliation(s)
- M Dadaian
- Department of Woman and Child Health, Karolinska Hospital, Stockholm, Sweden
| | | |
Collapse
|
20
|
Dadaian M, Westlund P. Albumin interferes with the uptake metabolism of arachidonic acid by human leukocytes. Lipids 1999; 34 Suppl:S181. [PMID: 10419141 DOI: 10.1007/bf02562281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M Dadaian
- Department of Woman and Child Health, Karolinska Hospital, Stockholm, Sweden.
| | | |
Collapse
|
21
|
Affiliation(s)
- C Chavis
- Hôpital Arnaud de Villeneuve, CHU de Montpellier, Montpellier Cedex 5, 34295, France.
| | | | | | | | | |
Collapse
|
22
|
Kis B, Mezei Z, Gecse A, Telegdy G. The effect of substance P on the arachidonate cascade of rat platelets. Acta Physiol Hung 1998; 85:89-97. [PMID: 9706302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The role of substance P (SP) in neurogenic inflammation is well known. Through neurokinin receptors, SP activates cells, including the arachidonate cascade of platelets. Our in vitro experiments were carried out to determine the effect of SP on the arachidonate cascade of rat platelets. The platelets were labelled with 14C-arachidonic acid, and the 14C-eicosanoids were then separated by means of overpressure thin-layer chromatography or high-performance liquid chromatography and were quantitatively determined. SP (10(-9) and 10(-8)) mol/L significantly increased the rate of the arachidonate cascade. The lipoxygenase pathway of platelets was stimulated by SP, which can result in the activation of protein kinase C mediated intracellular events. The cyclooxygenase system was inhibited by 10(-12) mol/L, and stimulated by 10(-9) mol/L SP. In our experiments SP in the physiological range of plasma concentration (10(-12) mol/L) decreased the synthesis of vasoconstrictor arachidonate metabolites (TxA2 and PGF2 alpha). These data suggest that in physiologic conditions the arachidonate cascade of platelets may play role in the vasodilator effect of SP. The formation of thromboxane in rat platelets was stimulated by higher concentration of SP (10(-9) mol/L), and therefore the SP-induced cytotoxicity against parasites might be mediated by the stimulation of thromboxane A2 synthesis.
Collapse
Affiliation(s)
- B Kis
- Department of Pathophysiology, Albert Szent-Györgyi Medical University, Szeged, Hungary
| | | | | | | |
Collapse
|
23
|
Cortelazzo S, Marchetti M, Orlando E, Falanga A, Barbui T, Buchanan MR. Aspirin increases the bleeding side effects in essential thrombocythemia independent of the cyclooxygenase pathway: role of the lipoxygenase pathway. Am J Hematol 1998; 57:277-82. [PMID: 9544970 DOI: 10.1002/(sici)1096-8652(199804)57:4<277::aid-ajh2>3.0.co;2-r] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Acetylsalicylic acid (ASA) is currently recommended as an antithrombotic for patients with essential thrombocythemia (ET) who are at an increased risk of thrombotic events. However, ASA is also associated with an increased risk of bleeding in these patients as compared to the risk of bleeding in other patients treated with ASA. Recent data suggest that while ASA inhibits platelet thromboxane A2 (TxA2) synthesis in all individuals, ASA has little effect or inhibits the lipoxygenase pathway (i.e., 12-hydroxyeicosatetranoic acid or 12-HETE synthesis) in some individuals, and enhances 12-HETE synthesis in others. These differential effects are associated with a pronounced prolongation of the bleeding time vs. no prolongation of the bleeding time, respectively, i.e., in ASA responders and ASA nonresponders, respectively. To determine if the increased risk of ASA-induced bleeding seen in ET patients is associated with an effect on 12-HETE synthesis, we compared the relative effects of ASA on the bleeding time, platelet TxA2 and 12-HETE synthesis, and platelet aggregation and adhesion in ET patients and healthy volunteers. ASA (300 mg, taken orally) prolonged the bleeding time in 82% of the ET patients but only 27% of the healthy volunteers although platelet TxA2 synthesis and ADP- and collagen-induced aggregation were inhibited significantly in both groups. In contrast, platelet 12-HETE synthesis was unchanged and platelet adhesion was decreased in those patients and volunteers whose bleeding times were prolonged by ASA, whereas platelet 12-HETE synthesis was increased significantly and platelet adhesion was unaffected in those patients and volunteers whose bleeding times were not prolonged, and in some cases shortened by ASA. These results confirm previous data that demonstrate that ASA has different effects on platelet 12-HETE synthesis and platelet adhesion in different individuals, i.e., inhibitory or no effect in ASA responders (in whom ASA prolonged bleeding) vs. enhancing effects in ASA nonresponders (in whom ASA did not prolong bleeding). These results also indicate that there is a greater percentage of ASA responders in patients with ET than that seen in the general population, a difference that is associated with an effect of ASA on the lipoxygenase pathway. This may explain the increased bleeding side effects seen in the ET patient population.
Collapse
|
24
|
Setty BN, Chen D, O'Neal P, Littrell JB, Grossman MH, Stuart MJ. Eicosanoids in sickle cell disease: potential relevance of 12(S)-hydroxy-5,8,10,14-eicosatetraenoic acid to the pathophysiology of vaso-occlusion. J Lab Clin Med 1998; 131:344-53. [PMID: 9579388 DOI: 10.1016/s0022-2143(98)90185-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The monohydroxyeicosanoid 12(S)-hydroxy-5,8,10,14-eicosatetraenoic acid (12-HETE), which is derived from oxygenation of arachidonic acid by 12-lipoxygenase, is one of the major metabolites in platelets. In a recent study, we have showed that this eicosanoid stimulated basal sickle-red-cell-endothelial-cell adhesion. To understand the pathophysiologic significance of 12-HETE, we measured the levels of this eicosanoid in plasma and urine from children with sickle cell disease. We found that as compared with controls, plasma 12-HETE levels are increased in patients with sickle-cell disease in the steady state, and are increased further during vaso-occlusive crises. Urinary 12-HETE levels were also increased during the steady state. We also assessed plasma levels of soluble P-selectin (another potential marker for platelet activation), and found changes in the levels of this marker similar to those seen with plasma 12-HETE. In additional studies, we found that 12-HETE enhanced hypoxia-induced sickle-red-cell-endothelial adherence, and that this effect was mediated by potentiation of agonist-induced upregulation of the expression of the mRNA for vascular cell adhesion molecule-1 (VCAM-1) in endothelial cells. Because 12-HETE appears to enhance both basal and agonist-induced sickle-red-cell adhesion, this metabolite could potentially play a role in the pathogenesis of the vaso-occlusive crisis (VOC) in sickle-cell disease.
Collapse
MESH Headings
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/blood
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/physiology
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/urine
- Adolescent
- Adult
- Anemia, Sickle Cell/blood
- Anemia, Sickle Cell/physiopathology
- Anemia, Sickle Cell/urine
- Animals
- Arterial Occlusive Diseases/blood
- Arterial Occlusive Diseases/physiopathology
- Arterial Occlusive Diseases/urine
- Cattle
- Cell Adhesion
- Child
- Child, Preschool
- Endothelium, Vascular/pathology
- Gene Expression Regulation/physiology
- Humans
- Middle Aged
- P-Selectin/blood
- RNA, Messenger/genetics
- Vascular Cell Adhesion Molecule-1/genetics
Collapse
Affiliation(s)
- B N Setty
- Department of Pediatrics, Thomas Jefferson University Medical School, Philadelphia, Pennsylvania, USA
| | | | | | | | | | | |
Collapse
|
25
|
Sakuma S, Fujimoto Y, Tsunomori M, Tagano S, Nishida H, Baba K, Fujita T. Effects of daphnodorin A, B and C, new flavans isolated from traditional Chinese medicine, on the 12-lipoxygenase and cyclooxygenase metabolism of arachidonic acid in rabbit platelets. Prostaglandins Leukot Essent Fatty Acids 1998; 58:143-6. [PMID: 9578153 DOI: 10.1016/s0952-3278(98)90154-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The effects of daphnodorin A, B and C, isolated from the root and bark of Daphne odora THUNB, on the activities of 12-lipoxygenase and cyclooxygenase in rabbit platelets were examined. Daphnodorin A and C were inhibitors of platelet 12-lipoxygenase and cyclooxygenase activities. Daphnodorin B had no effect on the two enzymatic pathways. The present data raise the possibility that daphnodorin A and C can be anti-thrombotic and anti-atherosclerotic drugs through the suppressive influence on the platelet 12-lipoxygenase and cyclooxygenase.
Collapse
MESH Headings
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/blood
- Animals
- Arachidonate 12-Lipoxygenase/drug effects
- Arachidonate 12-Lipoxygenase/metabolism
- Arachidonic Acid/blood
- Benzopyrans/administration & dosage
- Benzopyrans/pharmacology
- Blood Platelets/drug effects
- Blood Platelets/metabolism
- Chromatography, High Pressure Liquid
- Dose-Response Relationship, Drug
- Drugs, Chinese Herbal/administration & dosage
- Drugs, Chinese Herbal/chemistry
- Drugs, Chinese Herbal/pharmacology
- Fatty Acids, Unsaturated/blood
- Insecticides/administration & dosage
- Insecticides/pharmacology
- Male
- Medicine, Chinese Traditional
- Prostaglandin-Endoperoxide Synthases/drug effects
- Prostaglandin-Endoperoxide Synthases/metabolism
- Rabbits
Collapse
Affiliation(s)
- S Sakuma
- Department of Hygienic Chemistry, Osaka University of Pharmaceutical Sciences, Takatsuki, Japan
| | | | | | | | | | | | | |
Collapse
|
26
|
Abstract
12-Hydroxyeicosatetraenoic acid (12-HETE) is one of the major metabolites formed from arachidonic acid in platelets. We have recently shown that the in vitro metabolism of 12-HETE by human leukocytes, with and without stimulation, is effectively inhibited by the addition of physiological concentrations of albumin, probably by sequestration of the compound. In the present paper, we have studied the in vivo metabolism of 12-HETE in the rabbit, using either [1-14C]- or [14C(U)]12-HETE. Distribution of radioactivity was followed in urine, plasma, and bile, as well as in a number of tissues. In most of the tissues examined, the hydrophilic radioactivity constituted more than 50% of the total radioactivity after 20 min. When the lipophilic fraction was analyzed, around 15% of the radioactivity was shown to be unesterified 12-HETE, and only a very minor part could be detected as metabolites. The dominating lipophilic compound in the circulation after i.v. administration of radiolabeled 12-HETE was at all time points (1-60 min.) the parent compound, as analyzed by HPTLC and HPLC. A comparison of the plasma metabolite profiles obtained when [1-14C]- and [14C(U)]12-HETE were used displayed almost identical patterns, thus indicating that beta-oxidized metabolites either were not formed or were rapidly removed from the circulation. The appearance of large amounts of water-soluble radioactivity with time supported the latter conclusion. Several minor metabolites were seen that chromatographed in the dihydroxy acid region as judged by HPLC and TLC. The major one of these compounds represented about 10% of the lipophilic plasma radioactivity after 60 min., while unmetabolized 12-HETE at this stage still represented about 30%. The metabolite had a polarity similar to 12,20-dihydroxyeicosatetraenoic acid; however, when chromatographed together, these two compounds separated, indicating a different structure of the metabolite. Our findings are in agreement with in vitro data concerning the protective effect of albumin on the metabolism of 12-HETE and is the first extensive metabolic study of 12-HETE in vivo covering all metabolic possibilities involving the carbon skeleton.
Collapse
Affiliation(s)
- M Dadaian
- Department of Woman and Child Health, Stockholm, Sweden
| | | | | |
Collapse
|
27
|
Abstract
Platelet activation and thrombosis play a crucial role in cardiovascular diseases. It has been suggested that enhanced platelet function in vivo are present in the elderly and that they are associated with the development of these diseases [1-3]. In the present study, we addressed the question of whether platelet arachidonate metabolism was altered with aging.
Collapse
|
28
|
Sasaki M, Hori MT, Hino T, Golub MS, Tuck ML. Elevated 12-lipoxygenase activity in the spontaneously hypertensive rat. Am J Hypertens 1997; 10:371-8. [PMID: 9128202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
We have previously demonstrated that administration of inhibitors of the lipoxygenase (LO) pathway of arachidonic acid metabolism lowers blood pressure in hypertensive rats. In addition, we have shown that LO inhibition attenuates pressor agonist-induced vascular reactivity in vitro and calcium mobilization in cultured vascular smooth muscle cells (VSMC). To further elucidate the relationship between elevated LO activity and hypertension, 4, 8, and 12 week old hypertensive SHR were compared with age-matched Wistar-Kyoto (WKY) rats for plasma 12(S)-hydroxyeicosatetraenoic acid (12-HETE) concentration. 12-HETE levels were significantly elevated in the SHR compared to the WKY (SHR elevated by 154%, 159%, and 272% compared to WKY at 4, 8, and 12 weeks, respectively, P < .01 for all ages). There were no differences in plasma potassium levels between SHR and WKY at any of the ages tested. Plasma aldosterone levels and plasma renin activity were in the normal range at the three ages. At 12 weeks of age, both serum (4.72 +/- 0.23 v 2.18 +/- 0.33 microg/mL, P < .01), and aortic smooth muscle 12-HETE levels (0.94 +/- 0.09 v 0.66 +/- 0.08 microg/mg protein, P < .05) were elevated in SHR compared with WKY. The 12 week old SHR were given a bolus of the LO inhibitor 5,8,11-eicosatriynoic acid (ETI, 7 mg/kg, intravenously) and blood pressure measured after 20 min. ETI reduced mean systolic blood pressure from 175.8 +/- 4.2 to 141.6 +/- 5.9 mm Hg (P < .05). To investigate these effects of HETEs, cultured vascular smooth muscle cells were pretreated for 1 min with 12(S)HETE and then challenged with angiotensin II (AngII). The addition of 12(S)HETE increased AngII-induced intracellular calcium levels in normal cultured rat vascular smooth muscle cells by 78% compared to vehicle (P < .05). Thus, LO products, which are high in SHR, may contribute to vascular tone through alterations in the intracellular calcium signal by potentiating calcium responses to pressors such as Ang II.
Collapse
MESH Headings
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/blood
- Aging
- Animals
- Arachidonate 12-Lipoxygenase/analysis
- Calcium/metabolism
- Cells, Cultured
- Hypertension/metabolism
- Hypertension/physiopathology
- Male
- Muscle, Smooth, Vascular/metabolism
- Muscle, Smooth, Vascular/physiopathology
- Rats
- Rats, Inbred SHR
- Rats, Inbred WKY
Collapse
Affiliation(s)
- M Sasaki
- Division of Endocrinology, Department of Veteran's Affairs Medical Center, Sepulveda, California 91343, USA
| | | | | | | | | |
Collapse
|
29
|
Abstract
Several peptide receptors are expressed on the surface of platelets, including B1 and NK1, through which Bk and SP might influence platelet functions including their arachidonate cascade. The metabolites of the arachidonate cascade might play a regulatory role in the inter- and intracellular functions of platelets. Platelets were separated from fresh rat blood by differential centrifugation. Platelets (10(8) ml-1 in each sample) were preincubated with Bk or SP. The arachidonate cascade was investigated with [1-14C]arachidonic acid, as tracer substrate. The synthesised [14C]eicosanoids were isolated and quantitatively determined. Bradykinin elicited a biphasic dose-response curve in the formation of the vasoconstrictor and platelet aggregating thromboxane A2 (TxA2). Bk both inhibited (10(-8) mol/l), and elevated (10(-6) mol/l) the synthesis of TxA2 in the thrombocytes. The 12-HETE synthesis was inhibited by Bk (10(-8), 10(-7), 10(-5) mol/l); 12-HETE is an endogenous regulator of prostacyclin synthesis. The formation of 12-HETE in platelets was stimulated by SP (10(-11), 10(-9), 10(-8) mol/l). The synthesis of TxA2 in platelets was either attenuated (10(-12) mol/l), or stimulated (10(-9) mol/l) by SP. According to our observations Bk and SP might play a regulatory role in the activation or deactivation of platelets.
Collapse
MESH Headings
- 12-Hydroxy-5,8,10,14-eicosatetraenoic Acid/blood
- Animals
- Arachidonic Acid/blood
- Blood Platelets/drug effects
- Blood Platelets/metabolism
- Bradykinin/administration & dosage
- Bradykinin/pharmacology
- Bradykinin/physiology
- Dose-Response Relationship, Drug
- Eicosanoids/blood
- In Vitro Techniques
- Male
- Platelet Activation/drug effects
- Platelet Activation/physiology
- Rats
- Rats, Wistar
- Receptor, Bradykinin B1
- Receptors, Bradykinin/drug effects
- Receptors, Bradykinin/metabolism
- Receptors, Neurokinin-1/drug effects
- Receptors, Neurokinin-1/metabolism
- Substance P/pharmacology
- Substance P/physiology
- Thromboxane A2/blood
Collapse
Affiliation(s)
- A Gecse
- Department of Pathophysiology, Albert Szent-Györgyi Medical University, Szeged, Hungary
| | | | | | | |
Collapse
|