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Zhou H, Zhao L. Correlation between smoking and serum lipoprotein-associated phospholipase A2 level in overweight and obese men. ZHONG NAN DA XUE XUE BAO. YI XUE BAN = JOURNAL OF CENTRAL SOUTH UNIVERSITY. MEDICAL SCIENCES 2023; 48:191-197. [PMID: 36999465 PMCID: PMC10930334 DOI: 10.11817/j.issn.1672-7347.2023.210457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Indexed: 04/01/2023]
Abstract
OBJECTIVES Lipoprotein-associated phospholipase A2 (Lp-PLA2) is a vaso-specific inflammatory marker that exacerbates atherosclerotic through inflammatory responses. It can be used to predict the occurrence of adverse cardiovascular events and to assess the residual risk of cardiovascular diseases. This study aims to investigate the correlation between smoking and serum Lp-PLA2 levels in overweight and obese men, and to provide evidence for preventing the cardiovascular diseases. METHODS Male subjects, who participated in health examination at the Health Management Center, Third Xiangya Hospital, Central South University from May 1, 2020 to April 30, 2021, were selected. The smoking status and other information were collected by the Self-test Scale of Physical Examination. According to the smoking status, they were divided into a never-smoking group, a current smoking group, a quit smoking group and a passive smoking group. According to the daily smoking amount, the current smoking subjects were divided into a <10 cigarettes group, a 10 to 20 cigarettes group, a 21 to 30 cigarettes group, and a >30 cigarettes group. According to the smoking years, the current smoking subjects were divided into a <5 years group, a 5 to 10 years group, a 11 to 20 years group, and a >20 years group.Serum Lp-PLA2 levels and other clinical indexes in different smoking groups were measured and compared, the correlation between smoking and serum Lp-PLA2 levels in overweight and obese men was analyzed by logistic regression analysis. RESULTS Serum Lp-PLA2 levels were significantly different between the never-smoking group and the current smoking group (P<0.05). Logistic regression analysis showed that, before adjusting other influencing factors and in terms of smoking status, the current smoking group (OR=1.81, 95% CI 1.27 to 2.58, P<0.01) and the quit smoking group (OR=2.09, 95% CI 1.12 to 3.90, P<0.05) were positively correlated with serum Lp-PLA2 levels compared with the never-smoking group, while the passive smoking group had no correlation with serum Lp-PLA2 levels (OR=1.27, 95% CI 0.59 to 2.73, P>0.05). In terms of daily smoking amount, the 10 to 20 cigarettes group (OR=2.09, 95% CI 1.40 to 3.12, P<0.001) and the 21 to 30 cigarettes group (OR=1.98, 95% CI 1.22 to 3.20, P<0.01) were positively correlated with serum Lp-PLA2 levels compared with the never-smoking group, while the <10 cigarettes group (OR=1.45, 95% CI 0.81 to 2.60, P>0.05) and the >30 cigarettes group (OR=1.17, 95% CI 0.60 to 2.28, P>0.05) had no correlation with serum Lp-PLA2 levels. In terms of smoking years, the 5 to 10 years group (OR=1.94, 95% CI 1.07 to 3.53, P<0.05), the 11 to 20 years group (OR=2.06, 95% CI 1.33 to 3.18, P<0.01), and the >20 years group (OR=1.66, 95% CI 1.11 to 2.47, P<0.05) were positively correlated with serum Lp-PLA2 levels compared with the never-smoking group, while the <5 years group had no correlation with serum Lp-PLA2 levels (OR=1.12, 95% CI 0.38 to 3.33, P>0.05). After adjusting for age and other indicators, the correlation between smoking years and serum Lp-PLA2 levels was the same as before adjustment among the above smoking groups, except that the correlation between the smoking 5 to 10 years group and serum Lp-PLA2 levels was not significant (OR=1.77, 95% CI 0.95 to 3.29, P>0.05). CONCLUSIONS Smoking is correlated with serum Lp-PLA2 levels in overweight and obese men.
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Affiliation(s)
- Hui Zhou
- Health Management Center, Third Xiangya Hospital, Central South University, Changsha 410013, China.
| | - Linlin Zhao
- Health Management Center, Third Xiangya Hospital, Central South University, Changsha 410013, China.
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Hilse MS, Kretzschmar T, Pistulli R, Franz M, Bekfani T, Haase D, Neugebauer S, Kiehntopf M, Gummert JF, Milting H, Schulze PC. Analysis of Metabolic Markers in Patients with Chronic Heart Failure before and after LVAD Implantation. Metabolites 2021; 11:metabo11090615. [PMID: 34564430 PMCID: PMC8465815 DOI: 10.3390/metabo11090615] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 08/26/2021] [Accepted: 09/06/2021] [Indexed: 12/22/2022] Open
Abstract
Chronic heart failure (HF) is a clinical syndrome characterized by functional impairments of the myocardium. Metabolic and clinical changes develop with disease progression. In an advanced state, left ventricular assist devices (LVADs) are implanted for mechanical unloading. Our study aimed to assess the effects of LVAD implantation on the metabolic phenotypes and their potential to reverse the latter in patients with advanced HF. Plasma metabolites were analyzed by LC–MS/MS in 20 patients with ischemic cardiomyopathy (ICM), 20 patients with dilative cardiomyopathy (DCM), and 20 healthy controls. Samples were collected in HF patients before, 30 days after, and >100 days after LVAD implantation. Out of 188 measured metabolites, 63 were altered in HF. Only three metabolites returned to pre-LVAD concentrations 100 days after LVAD implantation. Pre-LVAD differences between DCM and ICM were mainly observed for amino acids and biogenic amines. This study shows a reversal of metabolite abnormalities in HF as a result of LVAD implantation. The etiology of the underlying disease plays an essential role in defining which specific metabolic parameter is altered in HF and reversed by LVAD implantation. Our findings provide a detailed insight into the disease pattern of ICM and DCM and the potential for reversibility of metabolic abnormalities in HF.
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Affiliation(s)
- Marion S. Hilse
- Department of Internal Medicine I, Division of Cardiology, University Hospital Jena, 07747 Jena, Germany; (M.S.H.); (T.K.); (M.F.); (D.H.)
| | - Tom Kretzschmar
- Department of Internal Medicine I, Division of Cardiology, University Hospital Jena, 07747 Jena, Germany; (M.S.H.); (T.K.); (M.F.); (D.H.)
| | - Rudin Pistulli
- Department of Cardiology I—Coronary and Peripheral Vascular Disease, Heart Failure, Münster University Hospital, 48149 Münster, Germany;
| | - Marcus Franz
- Department of Internal Medicine I, Division of Cardiology, University Hospital Jena, 07747 Jena, Germany; (M.S.H.); (T.K.); (M.F.); (D.H.)
| | - Tarek Bekfani
- Department of Internal Medicine I, Division of Cardiology, Angiology and Intensive Medical Care, University Hospital Magdeburg, 39120 Magdeburg, Germany;
| | - Daniela Haase
- Department of Internal Medicine I, Division of Cardiology, University Hospital Jena, 07747 Jena, Germany; (M.S.H.); (T.K.); (M.F.); (D.H.)
| | - Sophie Neugebauer
- Department of Clinical Chemistry and Laboratory Diagnostics, University Hospital Jena, 07747 Jena, Germany; (S.N.); (M.K.)
| | - Michael Kiehntopf
- Department of Clinical Chemistry and Laboratory Diagnostics, University Hospital Jena, 07747 Jena, Germany; (S.N.); (M.K.)
| | - Jan F. Gummert
- Heart and Diabetes Center NRW, 32545 Bad Oeynhausen, Germany; (J.F.G.); (H.M.)
| | - Hendrik Milting
- Heart and Diabetes Center NRW, 32545 Bad Oeynhausen, Germany; (J.F.G.); (H.M.)
| | - P. Christian Schulze
- Department of Internal Medicine I, Division of Cardiology, University Hospital Jena, 07747 Jena, Germany; (M.S.H.); (T.K.); (M.F.); (D.H.)
- Correspondence: ; Tel.: +49-3641-9-32-41-00
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Ween MP, White JB, Tran HB, Mukaro V, Jones C, Macowan M, Hodge G, Trim PJ, Snel MF, Hodge SJ. The role of oxidised self-lipids and alveolar macrophage CD1b expression in COPD. Sci Rep 2021; 11:4106. [PMID: 33602992 PMCID: PMC7892841 DOI: 10.1038/s41598-021-82481-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 12/28/2020] [Indexed: 02/08/2023] Open
Abstract
In chronic obstructive pulmonary disease (COPD) apoptotic bronchial epithelial cells are increased, and their phagocytosis by alveolar macrophages (AM) is decreased alongside bacterial phagocytosis. Epithelial cellular lipids, including those exposed on uncleared apoptotic bodies, can become oxidized, and may be recognized and presented as non-self by antigen presenting cells. CD1b is a lipid-presenting protein, previously only described in dendritic cells. We investigated whether CD1b is upregulated in COPD AM, and whether lipid oxidation products are found in the airways of cigarette smoke (CS) exposed mice. We also characterise CD1b for the first time in a range of macrophages and assess CD1b expression and phagocytic function in response to oxidised lipid. Bronchoalveolar lavage and exhaled breath condensate were collected from never-smoker, current-smoker, and COPD patients and AM CD1b expression and airway 8-isoprostane levels assessed. Malondialdehyde was measured in CS-exposed mouse airways by confocal/immunofluorescence. Oxidation of lipids produced from CS-exposed 16HBE14o- (HBE) bronchial epithelial cells was assessed by spectrophotometry and changes in lipid classes assessed by mass spectrometry. 16HBE cell toxicity was measured by flow cytometry as was phagocytosis, CD1b expression, HLA class I/II, and mannose receptor (MR) in monocyte derived macrophages (MDM). AM CD1b was significantly increased in COPD smokers (4.5 fold), COPD ex-smokers (4.3 fold), and smokers (3.9 fold), and AM CD1b significantly correlated with disease severity (FEV1) and smoking pack years. Airway 8-isoprostane also increased in smokers and COPD smokers and ex-smokers. Malondialdehyde was significantly increased in the bronchial epithelium of CS-exposed mice (MFI of 18.18 vs 23.50 for control). Oxidised lipid was produced from CS-exposed bronchial epithelial cells (9.8-fold of control) and showed a different overall lipid makeup to that of control total cellular lipid. This oxidised epithelial lipid significantly upregulated MDM CD1b, caused bronchial epithelial cell toxicity, and reduced MDM phagocytic capacity and MR in a dose dependent manner. Increased levels of oxidised lipids in the airways of COPD patients may be responsible for reduced phagocytosis and may become a self-antigen to be presented by CD1b on macrophages to perpetuate disease progression despite smoking cessation.
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Affiliation(s)
- Miranda P Ween
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia. .,School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia.
| | - Jake B White
- School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia.,Proteomics, Metabolomics and MS Imaging Core Facility, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia.,Vascular Research Centre, Lifelong Health Theme, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - Hai B Tran
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Violet Mukaro
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,Department of Critical Care, Melbourne Medical School, University of Melbourne, Melbourne, Australia
| | - Charles Jones
- School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Matthew Macowan
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Gregory Hodge
- Department of Thoracic Medicine, Royal Adelaide Hospital, Adelaide, Australia.,School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
| | - Paul J Trim
- School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia.,Proteomics, Metabolomics and MS Imaging Core Facility, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - Marten F Snel
- School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia.,Proteomics, Metabolomics and MS Imaging Core Facility, South Australian Health and Medical Research Institute (SAHMRI), Adelaide, Australia
| | - Sandra J Hodge
- School of Medicine, Faculty of Health Sciences, University of Adelaide, Adelaide, Australia
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Li ZJ, Chen W, Jiang H, Li XY, Zhu SN, Liu XH. Effects of Postoperative Parenteral Nutrition Enhanced by Multivitamin on Metabolic Phenotype in Postoperative Gastric Cancer Patients. Mol Nutr Food Res 2018; 62:e1700757. [PMID: 29710380 DOI: 10.1002/mnfr.201700757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2017] [Revised: 04/10/2018] [Indexed: 12/17/2022]
Abstract
SCOPE To investigate the effects of postoperative parenteral nutrition (PN) with multivitamins supplementation on oxidative stress and metabolism. METHODS AND RESULTS The participants are randomly assigned in a 1:1 ratio to groups: total nutrient admixture (TNA) + multivitamin (n = 14, Group A) and TNA + normal saline (n = 16, Group B). The levels of blood vitamins, ILs, and MDA are assessed and the dysregulation of metabolism is analyzed using nontargeted metabolite profiling. The degree of postoperative stress in Group A is significantly lower than that in Group B by analyzing changes in the levels of IL-8 and MDA. A set of 43 features are qualified to have a variable importance parameter score of >1.5 of a partial least-squares discriminate analysis model and fold change of >1.5 at p-value <0.05 between Groups A and B. The principal metabolic alternations in Group A include increased tricarboxylic acid cycle and ketogenesis with reduced plasma-free amino acids. Backing the results of clinical biomarkers, increased levels of antioxidative molecules, together with decreased levels of inflammatory related polyunsaturated fatty acids, are observed. CONCLUSION Postoperative PN enhanced by multivitamins can alleviate traumatic stress and improve metabolic transition from catabolism to anabolism in gastric cancer patients.
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Affiliation(s)
- Zi-Jian Li
- Department of Parenteral and Enteral Nutrition, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Wei Chen
- Department of Parenteral and Enteral Nutrition, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Hua Jiang
- Department of Parenteral and Enteral Nutrition, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China.,Metabolomics and Multidisciplinary Laboratory for Trauma Research, Institute for Emergency and Disaster Medicine, Sichuan Provincial People's Hospital, Sichuan Academy of Medical Sciences, Chengdu, Sichuan, 6100072, China
| | - Xiao-Yi Li
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Sai-Nan Zhu
- Statistics Department, Peking University First Hospital, Beijing, 100034, China
| | - Xiao-Hui Liu
- Technology Center for Protein Sciences, Tsinghua University, Beijing, 100084, China
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Peck MJ, Sanders EB, Scherer G, Lüdicke F, Weitkunat R. Review of biomarkers to assess the effects of switching from cigarettes to modified risk tobacco products. Biomarkers 2018; 23:213-244. [PMID: 29297706 DOI: 10.1080/1354750x.2017.1419284] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Context: One approach to reducing the harm caused by cigarette smoking, at both individual and population level, is to develop, assess and commercialize modified risk alternatives that adult smokers can switch to. Studies to demonstrate the exposure and risk reduction potential of such products generally involve the measuring of biomarkers, of both exposure and effect, sampled in various biological matrices.Objective: In this review, we detail the pros and cons for using several biomarkers as indicators of effects of changing from conventional cigarettes to modified risk products.Materials and methods: English language publications between 2008 and 2017 were retrieved from PubMed using the same search criteria for each of the 25 assessed biomarkers. Nine exclusion criteria were applied to exclude non-relevant publications.Results: A total of 8876 articles were retrieved (of which 7476 were excluded according to the exclusion criteria). The literature indicates that not all assessed biomarkers return to baseline levels following smoking cessation during the study periods but that nine had potential for use in medium to long-term studies.Discussion and conclusion: In clinical studies, it is important to choose biomarkers that show the biological effect of cessation within the duration of the study.
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Affiliation(s)
| | | | | | - Frank Lüdicke
- Research & Development, Philip Morris International, Neuchâtel, Switzerland
| | - Rolf Weitkunat
- Research & Development, Philip Morris International, Neuchâtel, Switzerland
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Rai S, Bhatnagar S. Novel Lipidomic Biomarkers in Hyperlipidemia and Cardiovascular Diseases: An Integrative Biology Analysis. ACTA ACUST UNITED AC 2017; 21:132-142. [DOI: 10.1089/omi.2016.0178] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Sneha Rai
- Computational and Structural Biology Laboratory, Division of Biological Sciences and Engineering, Netaji Subhas Institute of Technology, Dwarka, India
| | - Sonika Bhatnagar
- Computational and Structural Biology Laboratory, Division of Biological Sciences and Engineering, Netaji Subhas Institute of Technology, Dwarka, India
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Kim M, Kim M, Han JY, Lee SH, Jee SH, Lee JH. The metabolites in peripheral blood mononuclear cells showed greater differences between patients with impaired fasting glucose or type 2 diabetes and healthy controls than those in plasma. Diab Vasc Dis Res 2017; 14:130-138. [PMID: 28185532 DOI: 10.1177/1479164116678157] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
To determine differences between peripheral blood mononuclear cells and the plasma metabolites in patients with impaired fasting glucose or type 2 diabetes and healthy controls. In all, 65 nononobese patients (aged 30-70 years) with impaired fasting glucose or type 2 diabetes and 65 nonobese sex-matched healthy controls were included, and fasting peripheral blood mononuclear cell and plasma metabolomes were profiled. The diabetic or impaired fasting glucose patients showed higher circulating and peripheral blood mononuclear cell lipoprotein phospholipase A2 activities, high-sensitivity C-reactive protein and tumour necrosis factor-α than controls. Compared with controls, impaired fasting glucose or diabetic subjects showed increases in 11 peripheral blood mononuclear cell metabolites: six amino acids (valine, leucine, methionine, phenylalanine, tyrosine and tryptophan), l-pyroglutamic acid, two fatty acid amides containing palmitic amide and oleamide and two lysophosphatidylcholines. In impaired fasting glucose or diabetic patients, peripheral blood mononuclear cell lipoprotein phospholipase A2 positively associated with peripheral blood mononuclear cell lysophosphatidylcholines and circulating inflammatory markers, including tumour necrosis factor-α, high-sensitivity C-reactive protein and lipoprotein phospholipase A2 activities. In plasma metabolites between patients and healthy controls, we observed significant increases in only three amino acids (proline, valine and leucine) and decreases in only five lysophosphatidylcholines. This study demonstrates significant differences in the peripheral blood mononuclear cell metabolome in patients with impaired fasting glucose or diabetes compared with healthy controls. These differences were greater than those observed in the plasma metabolome. These data suggest peripheral blood mononuclear cells as a useful tool to better understand the inflammatory pathophysiology of diabetes.
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Affiliation(s)
- Minjoo Kim
- 1 Research Center for Silver Science, Institute of Symbiotic Life-TECH, Yonsei University, Seoul, Republic of Korea
| | - Minkyung Kim
- 2 National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, Republic of Korea
- 3 Brain Korea 21 PLUS Project, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, Republic of Korea
| | - Ji Yun Han
- 4 Interdisciplinary Course of Science for Aging, Yonsei University, Seoul, Republic of Korea
| | - Sang-Hyun Lee
- 5 Department of Family Practice, National Health Insurance Corporation Ilsan Hospital, Goyang, Republic of Korea
| | - Sun Ha Jee
- 6 Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, Republic of Korea
| | - Jong Ho Lee
- 1 Research Center for Silver Science, Institute of Symbiotic Life-TECH, Yonsei University, Seoul, Republic of Korea
- 2 National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, Republic of Korea
- 3 Brain Korea 21 PLUS Project, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, Republic of Korea
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Yang L, Cong HL, Wang SF, Liu T. AMP-activated protein kinase mediates the effects of lipoprotein-associated phospholipase A2 on endothelial dysfunction in atherosclerosis. Exp Ther Med 2017; 13:1622-1629. [PMID: 28413519 DOI: 10.3892/etm.2017.4142] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2015] [Accepted: 12/20/2016] [Indexed: 12/17/2022] Open
Abstract
The present study aimed to investigate the effects of lipoprotein-associated phospholipase A2 (Lp-PLA2) on endothelial dysfunction in an in vitro cell model of atherosclerosis, and to determine whether AMP-activated protein kinase (AMPK) mediates the effects of Lp-PLA2 on endothelial dysfunction. A total of 392 patients with coronary artery disease (CAD), including various sub-conditions, were recruited, and the plasma concentrations of Lp-PLA2 were evaluated. In addition, an in vitro model of atherosclerosis was established by exposing human umbilical vein endothelial cells (HUVECs) to oxidized low-density lipoprotein (oxLDL). SB-435495 was used to inhibit Lp-PLA2, and compound C was used to suppress AMPK expression. Lp-PLA2, AMPKα and phosphorylated-AMPKα (T172) expression in HUVECs were evaluated using western blot analysis. The concentrations of nitric oxide (NO), endothelin 1 (ET-1), intercellular adhesion molecule 1 (ICAM-1) and platelet/endothelial cell adhesion molecule 1 (PECAM-1) in cell culture supernatant were determined using commercially available ELISA kits. MTT assays were employed to indicate changes in cell viability. The current study found the plasma Lp-PLA2 levels were elevated in the CAD patients with stable angina pectoris, unstable angina pectoris, acute coronary syndromes and acute myocardial infarction, compared with a healthy control population. In addition, the in vitro results showed that Lp-PLA2 expression levels were elevated in oxLDL-exposed HUVECs. Lp-PLA2 suppression could increase cell viability, induce the production of NO and decrease the secretion of ET-1, in addition to suppressing the expression of cell adhesion molecules, including ICAM-1 and PECAM-1 in oxLDL-exposed HUVECs. The expression of AMPKα and phosphorylated-AMPKα (T172) was regulated by Lp-PLA2, and AMPK suppression was able to reverse the effects of Lp-PLA2 with regard to cell viability, endothelial vasorelaxation capacity and the secretion of adhesion molecules in oxLDL-exposed HUVECs. In conclusion, the present study provides initial evidence that Lp-PLA2 is able to cause endothelial dysfunction in an in vitro model of atherosclerosis, and the effects of Lp-PLA2 on endothelial dysfunction was at least partially a result of the downregulation of AMPKα, thus contributing to the progression of atherosclerosis.
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Affiliation(s)
- Li Yang
- Department of Cardiology, Thoracic Clinical College, Tianjin Medical University, Tianjin 300222, P.R. China.,Department of Cardiology, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Hong-Liang Cong
- Department of Cardiology, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Shu-Feng Wang
- Department of Cardiology, Tianjin Chest Hospital, Tianjin 300222, P.R. China
| | - Ting Liu
- Tianjin Cardiovascular Institute, Tianjin 300222, P.R. China
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Heriansyah T, Adam AA, Wihastuti TA, Saifur Rohman M. Elaborate evaluation of serum and tissue oxidized LDL level with darapladib therapy: A feasible diagnostic marker for early atherogenesis. Asian Pac J Trop Biomed 2017. [DOI: 10.1016/j.apjtb.2016.11.014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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10
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Multiplatform serum metabolic phenotyping combined with pathway mapping to identify biochemical differences in smokers. Bioanalysis 2016; 8:2023-43. [DOI: 10.4155/bio-2016-0108] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Aim: Determining perturbed biochemical functions associated with tobacco smoking should be helpful for establishing causal relationships between exposure and adverse events. Results: A multiplatform comparison of serum of smokers (n = 55) and never-smokers (n = 57) using nuclear magnetic resonance spectroscopy, UPLC–MS and statistical modeling revealed clustering of the classes, distinguished by metabolic biomarkers. The identified metabolites were subjected to metabolic pathway enrichment, modeling adverse biological events using available databases. Perturbation of metabolites involved in chronic obstructive pulmonary disease, cardiovascular diseases and cancer were identified and discussed. Conclusion: Combining multiplatform metabolic phenotyping with knowledge-based mapping gives mechanistic insights into disease development, which can be applied to next-generation tobacco and nicotine products for comparative risk assessment.
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Mozzini C, Casadei A, Roscia G, Cominacini L. Young smoker "ABCD" vascular assessment: a four-step ultrasound examination for detecting peripheral, extra and intra-cranial early arterial damage. BMC Cardiovasc Disord 2016; 16:147. [PMID: 27391044 PMCID: PMC4938918 DOI: 10.1186/s12872-016-0318-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 06/07/2016] [Indexed: 11/17/2022] Open
Abstract
Background Cigarette smoking is known as a major risk factor in the pathogenic mechanisms of stroke, coronary and peripheral artery disease (CAD and PAD), even in young subjects. The aim of this study is the creation of a four-step ultrasound examination to evaluate and monitor the peripheral, the extra and the intra-cranial assessment of the arterial early damage in smokers. The evaluations of A, the Ankle-brachial index, ABI, B, the Breath holding index, BHI, C, the Carotid intima media thickness, CIMT, and D, the Diameter of the abdominal aorta represent the “ABCD” assessment. Methods Thirty-eight healthy smokers and 43 controls underwent A, calculated for each leg. B was calculated after determination of subjects’ flow velocity of middle cerebral artery (MCA) by trans-cranial colour Doppler (TCCD) before and after 30 s of apnoea at baseline and just after smoking a cigarette, to simulate the chronic and acute effects of smoking. Finally, C and D evaluation were assessed using a high-resolution B-mode ultrasound. Results Smokers presented higher values of CIMT (mean and maximal), and lower BHI both at baseline and just after smoking (p < 0.01), though in the normal range. No significant differences were found for A and D between smokers and non- smokers. Conclusions Our results underline the importance of the assessment of B and C, that, though in the normal range, present significant differences between smokers and non-smokers. These data could drive the screening between smokers in age-related manner. Moreover, the “ABCD” examination could represent a valid method to detect and then monitor smokers’ vascular damage. Although it is far to be considered a screening and routine tool, it should be contemplated in a wider context of possible not-invasive practical screening and follow-up modalities. This would be designed to implement preventive strategies and tools aimed at discouraging tobacco addiction and monitoring cardiovascular risk patients.
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Affiliation(s)
- Chiara Mozzini
- Department of Medicine, Section of Internal Medicine, University of Verona, Piazzale L.A. Scuro, 10-37134, Verona, Italy.
| | - Alder Casadei
- Ultrasound Association of South-Tyrol, Bolzano Health District, Piazza W.A. Loew-Cadonna, 12-39100, Bolzano, Italy
| | - Giuseppe Roscia
- Department of Internal Medicine, Bolzano Central Hospital, via L. Bohler, 5-39100, Bolzano, Italy
| | - Luciano Cominacini
- Department of Medicine, Section of Internal Medicine, University of Verona, Piazzale L.A. Scuro, 10-37134, Verona, Italy
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Kim M, Song G, Kang M, Yoo HJ, Jeong TS, Lee SH, Lee JH. Replacing carbohydrate with protein and fat in prediabetes or type-2 diabetes: greater effect on metabolites in PBMC than plasma. Nutr Metab (Lond) 2016; 13:3. [PMID: 26788114 PMCID: PMC4717650 DOI: 10.1186/s12986-016-0063-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 01/12/2016] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Active metabolism of peripheral blood mononuclear cells (PBMC) could suggest their suitability for metabolomics studies. This study examined whether reductions in PBMCs and plasma lipoprotein-associated phospholipase A2 (Lp-PLA2) activities induced by dietary intervention affected the overall metabolic profiles of PBMC and plasma. METHODS Eighty nonobese subjects aged 40-70 years (18.5 ≤ BMI < 30 kg/m(2)) with prediabetes or newly-diagnosed type-2 diabetes were assigned to consume either the usual refined-rice diet (control group, n = 40) or to replace refined rice with whole grains and legumes as carbohydrates (whole-grain group, n = 40) for three meals per day during the 12-week intervention. Fasting PBMC and plasma metabolomes were profiled using UPLC-LTQ-Orbitrap mass spectrometry. RESULTS After 12 weeks, changes in fasting glucose, HbA1c, HOMA-IR, MDA, ox-LDL, LDL particle size, plasma Lp-PLA2 activity, and PBMC enzyme activity in the whole-grain group were significantly different from those in the control group before and after adjusting for baseline levels. The PBMC levels of L-leucine, oleamide, lysoPC (16:0), and lysoPC (18:0) in the whole-grain group showed greater reductions compared with those of the control group. Changes in plasma metabolites were not significantly different between the two groups. Changes in PBMC Lp-PLA2 activity positively correlated with changes in L-leucine, oleamide, lysoPC (16:0), lysoPC (18:0), glucose, and ox-LDL, and negatively correlated with changes in LDL particle size. CONCLUSIONS This study showed that dietary intervention in prediabetic or type-2 diabetic patients had a greater effect on PBMC Lp-PLA2 activity and metabolites compared with those of plasma metabolites. TRIAL REGISTRATION NCT02191644.
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Affiliation(s)
- Minjoo Kim
- Research Center for Silver Science, Institute of Symbiotic Life-TECH, Yonsei University, Seoul, 03722 Republic of Korea
| | - Gayoung Song
- National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, 03722 Republic of Korea ; Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722 Republic of Korea
| | - Miso Kang
- National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, 03722 Republic of Korea ; Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722 Republic of Korea
| | - Hye Jin Yoo
- National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, 03722 Republic of Korea ; Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722 Republic of Korea
| | - Tae-Sook Jeong
- National Research Laboratory of Lipid Metabolism and Atherosclerosis, Korea Research Institute of Bioscience and Biotechnology, Daejeon, 34141 Republic of Korea
| | - Sang-Hyun Lee
- Department of Family Practice, National Health Insurance Corporation Ilsan Hospital, Goyang, 10444 Republic of Korea
| | - Jong Ho Lee
- Research Center for Silver Science, Institute of Symbiotic Life-TECH, Yonsei University, Seoul, 03722 Republic of Korea ; National Leading Research Laboratory of Clinical Nutrigenetics/Nutrigenomics, Department of Food and Nutrition, College of Human Ecology, Yonsei University, Seoul, 03722 Republic of Korea ; Department of Food and Nutrition, Brain Korea 21 PLUS Project, College of Human Ecology, Yonsei University, 50 Yonsei-ro, Seodaemun-gu, Seoul, 03722 Republic of Korea
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Lipidome and transcriptome profiling of pneumolysin intoxication identifies networks involved in statin-conferred protection of airway epithelial cells. Sci Rep 2015; 5:10624. [PMID: 26023727 PMCID: PMC4448502 DOI: 10.1038/srep10624] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2014] [Accepted: 04/22/2015] [Indexed: 12/12/2022] Open
Abstract
Pneumonia remains one of the leading causes of death in both adults and children worldwide. Despite the adoption of a wide variety of therapeutics, the mortality from community-acquired pneumonia has remained relatively constant. Although viral and fungal acute airway infections can result in pneumonia, bacteria are the most common cause of community-acquired pneumonia, with Streptococcus pneumoniae isolated in nearly 50% of cases. Pneumolysin is a cholesterol-dependent cytolysin or pore-forming toxin produced by Streptococcus pneumonia and has been shown to play a critical role in bacterial pathogenesis. Airway epithelium is the initial site of many bacterial contacts and its barrier and mucosal immunity functions are central to infectious lung diseases. In our studies, we have shown that the prior exposure to statins confers significant resistance of airway epithelial cells to the cytotoxicity of pneumolysin. We decided to take this study one step further, assessing changes in both the transcriptome and lipidome of human airway epithelial cells exposed to toxin, statin or both. Our current work provides the first global view in human airway epithelial cells of both the transcriptome and the lipid interactions that result in cellular protection from pneumolysin.
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