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Xu L, Fu T, Wang Y, Ji N. Diagnostic value of peripheral blood miR-296 combined with vascular endothelial growth factor B on the degree of coronary artery stenosis in patients with coronary heart disease. JOURNAL OF CLINICAL ULTRASOUND : JCU 2023; 51:520-529. [PMID: 36852944 DOI: 10.1002/jcu.23433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 12/20/2022] [Accepted: 12/27/2022] [Indexed: 06/18/2023]
Abstract
OBJECTIVE Coronary heart disease (CHD) is a disorder resulting from organic and functional coronary artery stenosis (CAS), thus causing reduced oxygenated blood in the heart. miRNAs are useful biomarkers in the diagnosis of atherosclerosis, CHD, and acute coronary syndrome. Vascular endothelial growth factor (VEGF) is closely related to CHD. This study explored the correlation of miR-296 and VEGF-B expression levels in peripheral blood with CAS degree in CHD patients. METHODS Totally 220 CHD patients were enrolled and classified into mild-(71 cases)/moderate-(81 cases)/severe-CAS (68 cases) groups, with another 80 healthy cases as controls. The serum miR-296 and VEGF-B expression levels were detected using reverse transcription quantitative polymerase chain reaction. The correlation between miR-296 and CAS-related indexes was assessed via Pearson analysis. The binding relationship of miR-296 and VEGF-B was first predicted and their correlation was further analyzed via the Pearson method. The clinical diagnostic efficacy of miR-296 or VEGF-B on CAS degree was evaluated by the receiver operating characteristic curve. RESULTS Serum miR-296 was downregulated in CHD patients and was the lowest in patients with severe-CAS. miR-296 was negatively-correlated with high-sensitivity C-reactive protein, brain natriuretic peptide, and cardiac troponin I. miR-296 targeted VEGF-B. VEGF-B was upregulated in CHD patients and inversely-related to miR-296. Low expression of miR-296 and high expression of VEGF-B both had high clinical diagnostic values on CAS degree in CHD patients. miR-296 combined with VEGF-B increased the diagnostic value on CAS. CONCLUSION Low expression of miR-296 combined with high expression of its target VEGF-B predicts CAS degree in CHD patients.
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Affiliation(s)
- Lei Xu
- Department of Cardiology, Yiwu Central Hospital, Affiliated Hospital of Wenzhou Medical University, Zhejiang, China
| | - Ting Fu
- Department of Cardiology, Yiwu Central Hospital, Affiliated Hospital of Wenzhou Medical University, Zhejiang, China
| | - Yu Wang
- Department of Cardiology, Yiwu Central Hospital, Affiliated Hospital of Wenzhou Medical University, Zhejiang, China
| | - Ningning Ji
- Department of Cardiology, Yiwu Central Hospital, Affiliated Hospital of Wenzhou Medical University, Zhejiang, China
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Zhang L, Hailati J, Ma X, Liu J, Liu Z, Yang Y, He P, Wulasihan M. Analysis of risk factors for different subtypes of acute coronary syndrome. J Int Med Res 2021; 49:3000605211008326. [PMID: 33969735 PMCID: PMC8113931 DOI: 10.1177/03000605211008326] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Accepted: 03/15/2021] [Indexed: 11/17/2022] Open
Abstract
AIMS To investigate the different risk factors among different subtypes of patients with acute coronary syndrome (ACS). METHODS A total of 296 patients who had ACS were retrospectively enrolled. Blood and echocardiographic indices were assessed within 24 hours after admission. Differences in risk factors and Gensini scores of coronary lesions among three groups were analyzed. RESULTS Univariate analysis of risk factors for ACS subtypes showed that age, and levels of fasting plasma glucose, amino-terminal pro-brain natriuretic peptide, and creatine kinase isoenzyme were significantly higher in patients with non-ST-segment elevation myocardial infarction (NSTEMI) than in those with unstable angina pectoris (UAP). Logistic multivariate regression analysis showed that amino-terminal pro-brain natriuretic peptide and the left ventricular ejection fraction (LVEF) were related to ACS subtypes. The left ventricular end-diastolic diameter was an independent risk factor for UAP and ST-segment elevation myocardial infarction (STEMI) subtypes. The severity of coronary stenosis was significantly higher in NSTEMI and STEMI than in UAP. Gensini scores in the STEMI group were positively correlated with D-dimer levels (r = 0.429) and negatively correlated with the LVEF (r = -0.602). CONCLUSION Different subtypes of ACS have different risk factors. Our findings may have important guiding significance for ACS subtype risk assessment and clinical treatment.
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Affiliation(s)
- Lei Zhang
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
| | - Juledezi Hailati
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
| | - Xiaoyun Ma
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
| | - Jiangping Liu
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
| | - Zhiqiang Liu
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
| | - Yuchun Yang
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
| | - Pengyi He
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
| | - Muhuyati Wulasihan
- Department of Comprehensive Cardiology, The First
Affiliated Hospital of Xinjiang Medical University, Urumqi, Xinjiang Province,
China
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Chen Y, Zhang LS, Ren JL, Zhang YR, Wu N, Jia MZ, Yu YR, Ning ZP, Tang CS, Qi YF. Intermedin 1-53 attenuates aging-associated vascular calcification in rats by upregulating sirtuin 1. Aging (Albany NY) 2020; 12:5651-5674. [PMID: 32229709 PMCID: PMC7185112 DOI: 10.18632/aging.102934] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 01/27/2020] [Indexed: 02/01/2023]
Abstract
Vascular calcification is a common phenomenon in older adults. Intermedin (IMD) is a cardiovascular bioactive peptide inhibiting vascular calcification. In this study, we aimed to investigate whether IMD1-53 attenuates aging-associated vascular calcification. Vascular calcification was induced by vitamin D3 plus nicotine (VDN) in young and old rats. The calcification in aortas was more severe in old rats treated with VDN than young control rats, and IMD expression was lower. Exogenous administration of IMD1-53 significantly inhibited the calcium deposition in aortas and the osteogenic transdifferentiation of vascular smooth muscle cells (VSMCs) in VDN-treated old rats. Moreover, levels of aging-related p16, p21 and β-galactosidase were all greatly decreased by IMD1-53. These results were further confirmed in rat and human VSMCs in vitro. In addition, IMD-deficient mouse VSMCs showed senescence features coinciding with osteogenic transition as compared with wild-type mouse VSMCs. Mechanistically, IMD1-53 significantly increased the expression of the anti-aging factor sirtuin 1 (sirt1); the inhibitory effects of IMD1-53 on calcification and senescence were blocked by sirt1 knockdown. Furthermore, preincubation with inhibitors of PI3K, AMPK or PKA efficiently blunted the upregulatory effect of IMD1-53 on sirt1. Consequently, IMD1-53 could attenuate aging-associated vascular calcification by upregulating sirt1 via activating PI3K/Akt, AMPK and cAMP/PKA signaling.
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Affiliation(s)
- Yao Chen
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100083, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100083, China.,Department of Pathogen Biology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
| | - Lin-Shuang Zhang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100083, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100083, China.,Department of Pathogen Biology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
| | - Jin-Ling Ren
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100083, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100083, China.,Department of Pathogen Biology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
| | - Ya-Rong Zhang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100083, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100083, China.,Department of Pathogen Biology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
| | - Ning Wu
- Department of Gynaecology and Obstetrics, Beijing Chao-Yang Hospital, Capital Medical University, Beijing 100020, China
| | - Mo-Zhi Jia
- Department of Pathogen Biology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
| | - Yan-Rong Yu
- Department of Pathogen Biology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
| | - Zhong-Ping Ning
- Shanghai University of Medicine and Health Sciences, Shanghai University of Medicine and Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, China
| | - Chao-Shu Tang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100083, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100083, China.,Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
| | - Yong-Fen Qi
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100083, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100083, China.,Department of Pathogen Biology, School of Basic Medical Sciences, Peking University, Beijing 100083, China
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Abstract
Objective: To evaluate the diagnostic values of transesophageal echocardiography (TEE) and transthoracic echocardiography (TTE) in cardiogenic embolic cerebral infarction. Methods: Fifty patients with occult cerebral infarction who were admitted to the hospital between June 2015 and June 2016 were selected as research subjects. The patients were diagnosed by transesophageal echocardiography and transthoracic echocardiography. Diagnostic data were compared to analyze the values of the two diagnostic methods. Results: Sixteen out of fifty patients were diagnosed as cardiogenic embolic cerebral infarction by TEE (32%), including two cases of aortic plaques, six cases of atrial septal defect, two cases of atrial septal aneurysm, two cases of patent foramen ovale, one case of left atrial spontaneous echo contrast, one case of mitral prolapse and two case of mitral stenosis. Four cases were diagnosed as cardiogenic embolic cerebral infarction by TTE (8.0%), including one case of patent foramen ovale, one case of left atrial spontaneous echo contrast, one case of mitral prolapse and one case of mitral stenosis. The difference was statistically significant (P<0.05). The main difference of TEE and TTE was detection of aorta atheromatous plaques and atrial septal lesions. Aortic atheromatous plaques of two cases and atrial septal lesions of eight cases were missed in the diagnosis by TTE. Conclusion: Detection and diagnosis of cardiac embolic cerebral infarction with TEE is highly accurate and advantageous. Therefore, TEE is worth promotion and application.
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Affiliation(s)
- Wen Chu
- Wen Chu, Ultrasonic Department, Luoyang Central Hospital Affiliated to Zhengzhou University, Henan, 471000, China
| | - Hua Wang
- Hua Wang, Ultrasonic Department, Luoyang Central Hospital Affiliated to Zhengzhou University, Henan, 471000, China
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Zhu Q, Ni XQ, Lu WW, Zhang JS, Ren JL, Wu D, Chen Y, Zhang LS, Yu YR, Tang CS, Qi YF. Intermedin reduces neointima formation by regulating vascular smooth muscle cell phenotype via cAMP/PKA pathway. Atherosclerosis 2017; 266:212-222. [PMID: 29053988 DOI: 10.1016/j.atherosclerosis.2017.10.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 09/13/2017] [Accepted: 10/06/2017] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND AIMS Vascular smooth muscle cell (VSMC) dedifferentiation contributes to neointima formation, which results in various vascular disorders. Intermedin (IMD), a cardiovascular paracrine/autocrine polypeptide, is involved in maintaining circulatory homeostasis. However, whether IMD protects against neointima formation remains largely unknown. The purpose of this study is to investigate the role of IMD in neointima formation and the possible mechanism. METHODS IMD1-53 (100ng/kg/h) or saline water was used on rat carotid-artery balloon-injury model. The mouse left common carotid-artery ligation-injury model was established using IMD-transgenic and C57BL/6J mice. Immunohistochemistry and immunofluorescence staining was used to detect the protein expression in rat carotid arteries. Radioimmunoassay was used to determine the serum IMD level. The hematoxylin andeosin staining was used for carotid arteries morphological testing. In vitro, for rat primary cultured VSMC phenotype transition, proliferation and migration assays, platelet-derived growth factor-BB (PDGF-BB) reagent and IMD1-53 peptide were added to the culture media at the final concentration of 20 ng/mL and 10-7mol/L respectively. Quantification of VSMC proliferation involved MTT and BrdU assay and migration was detected by wound-healing assay. Western blot and realtime PCR were used to detect the protein and mRNA levels of tissues or cells. RESULTS With the rat carotid-artery balloon-injury model, IMD was significantly downregulated in injured arteries and plasma. Exogenous IMD1-53 greatly inhibited neointima formation and prevented VSMC from switching to a synthetic phenotype. With the left common carotid-artery ligation-injury model, IMD-transgenic mice showed less neointima formation than C57BL/6J mice. PDGF-BB reduced IMD mRNA expression in rat primary cultured VSMCs but increased that of its receptors, calcitonin receptor-like receptor or receptor activity-modifying proteins. Furthermore, PDGF-BB promoted VSMC proliferation and migration and transformed VSMCs to the synthetic phenotype, which was reversed with IMD1-53 treatment. Mechanistically, IMD1-53 maintained the contractile VSMC phenotype via the cyclic adenosine monophosphate/protein kinase A (cAMP/PKA) pathway. CONCLUSIONS IMD attenuated neointima formation both in the rat model of carotid-artery balloon injury and mouse model of common carotid-artery ligation injury. IMD protection may be mediated by maintaining a VSMC contractile phenotype via the cAMP/PKA pathway.
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Affiliation(s)
- Qing Zhu
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Xian-Qiang Ni
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Wei-Wei Lu
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Jin-Sheng Zhang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Jin-Ling Ren
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Di Wu
- The Peking University Aerospace School of Clinical Medicine, Peking University Health Science Center, Beijing 100191, China
| | - Yao Chen
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Lin-Shuang Zhang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Yan-Rong Yu
- Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Chao-Shu Tang
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Beijing 100191, China
| | - Yong-Fen Qi
- Laboratory of Cardiovascular Bioactive Molecule, School of Basic Medical Sciences, Peking University, Beijing 100191, China; Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Peking University Health Science Center, Beijing 100191, China; Department of Microbiology and Parasitology, School of Basic Medical Sciences, Peking University, Beijing 100191, China.
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Zhang SY, Xu MJ, Wang X. Adrenomedullin 2/intermedin: a putative drug candidate for treatment of cardiometabolic diseases. Br J Pharmacol 2017; 175:1230-1240. [PMID: 28407200 DOI: 10.1111/bph.13814] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/15/2017] [Accepted: 03/30/2017] [Indexed: 11/28/2022] Open
Abstract
Adrenomedullin (ADM) 2/intermedin (IMD) is a short peptide that belongs to the CGRP superfamily. Although it shares receptors with CGRP, ADM and amylin, ADM2 has significant and unique functions in the cardiovascular system. In the past decade, the cardiovascular effect of ADM2 has been carefully analysed. In this review, progress in understanding the effects of ADM2 on the cardiovascular system and its protective role in cardiometabolic diseases are summarized. LINKED ARTICLES This article is part of a themed section on Spotlight on Small Molecules in Cardiovascular Diseases. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.8/issuetoc.
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Affiliation(s)
- Song-Yang Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
| | - Ming-Jiang Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
| | - Xian Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, 100191, China
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Yang SX, Chen YX, Xu J, Yang ZH. Plasma Intermedin Level Indicates Severity and Treatment Efficacy of Septic Shock in Sprague-Dawley (SD) Rats. Med Sci Monit 2016; 22:5028-5034. [PMID: 27999422 PMCID: PMC5198747 DOI: 10.12659/msm.897885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The aim of this study was to investigate the value of plasma intermedin (IMD) in assessing severity and treatment efficacy of septic shock. MATERIAL AND METHODS Healthy male Sprague-Dawley (SD) rats were chosen and divided into a normal control group (n=15) and a shock model group (n=27) that received intravenous injection of lipopolysaccharide (LPS). Then, 3 specimens were taken from each group. The shock model group rats were divided into an LPS group and a treatment group with 12 rats each. The treatment group received intravenous injection of compound sodium lactate solution. Plasma IMD and IMD1-47 mRNA expressions were compared and analyzed. RESULTS Mean arterial pressure (MAP) was lower while white blood cell count and TNF-α were higher in the shock model group than in the normal control group (P<0.05). After 10 h and 20 h, the treatment group had lower plasma IMD and IMD1-47 mRNA expressions compared with the LPS group (P<0.05). Plasma IMD and IMD1-47 mRNA expressions in the LPS group after 20 h were significantly higher than after 10 h (P<0.05). IMD was positively correlated with interleukins (IL-3, IL-6, and IL-8), white blood cell count, and body temperature (all P<0.05), but were negatively correlated with systolic pressure (r=-0.8474, P=0.0040). CONCLUSIONS Plasma IMD level can effectively reflect the severity of septic shock and can be used as an important indicator of septic shock treatment effectiveness.
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Affiliation(s)
- Su-Xian Yang
- Department of Infectious Diseases, Linyi People's Hospital, Linyi, Shandong, China (mainland)
| | - Yun-Xiu Chen
- Department of Infectious Diseases, Linyi People's Hospital, Linyi, Shandong, China (mainland)
| | - Jing Xu
- Department of Infectious Diseases, Linyi People's Hospital, Linyi, Shandong, China (mainland)
| | - Zhao-Hui Yang
- Department of Infectious Diseases, Linyi People's Hospital, Linyi, Shandong, China (mainland)
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Spencer TR, Sidhu MS, Bisaillon J, Christopher King C. Novel Cardiac Biomarkers for Emergency Department Evaluation of Acute Coronary Syndrome: The Recent Evidence on Non-troponin Biomarkers and Their Limitations. CURRENT EMERGENCY AND HOSPITAL MEDICINE REPORTS 2016. [DOI: 10.1007/s40138-016-0104-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Li P, Shi L, Han Y, Zhao Y, Qi Y, Wang B. Prognostic Value of Plasma Intermedin Level in Patients With Non-ST-Segment Elevation Acute Coronary Syndrome. Medicine (Baltimore) 2016; 95:e3422. [PMID: 27100434 PMCID: PMC4845838 DOI: 10.1097/md.0000000000003422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Intermedin (IMD), an autocrine/paracrine biologically active peptide, plays a critical role in maintaining vascular homeostasis. Recent research has shown that high plasma levels of IMD are associated with poor outcomes for patients with ST-segment elevation acute myocardial infarction. However, the prognostic utility of IMD levels in non-ST-segment elevation acute coronary syndrome (NSTE-ACS) has not yet been investigated. We hypothesized that the level of plasma IMD would have prognostic value in patients with NSTE-ACS. Plasma IMD was determined by radioimmunoassay in 132 NSTE-ACS patients on admission to hospital and 132 sex- and age-matched healthy-control subjects. Major adverse cardiovascular events (MACEs), including death, heart failure, hospitalization, and acute myocardial infarction, were noted during follow-up. In total, 23 patients suffered MACEs during the follow-up period (mean 227 ± 118 days, range 2-421 days). Median IMD levels were higher in NSTE-ACS patients than control [320.0 (250.9/384.6) vs. 227.2 (179.7/286.9) pg/mL, P <0.001]. The area under the receiver-operating characteristic curve for IMD and N-terminal pro-B-type brain natriuretic peptide (NT-proBNP) did not significantly differ (0.73 and 0.79, both P <0.001, respectively; P = 0.946). ROC curve analysis revealed a cut-off value for IMD at 340.7 pg/mL. Cox regression analysis with cardiovascular risk variables and NT-proBNP showed that the risk of MACEs increased by a factor of 12.96 (95% CI, 3.26-49.42; P <0.001) with high IMD levels (at the cut-off value). IMD has potential as a prognostic biomarker for predicting MACEs in patients with NSTE-ACS.
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Affiliation(s)
- Pengyang Li
- From the Peking University Aerospace School of Clinical Medicine (PL, LS, BW), Peking University Health Science Center; Department of Cardiology (PL, YH, YZ, BW), Aerospace Central Hospital; Laboratory of Cardiovascular Bioactive Molecule (YQ), School of Basic Medical Sciences; Key Laboratory of Molecular Cardiovascular Science (YQ), Ministry of Education; and Department of Pathogen Biology (YQ), School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
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Bell D, Gordon BJ, Lavery A, Megaw K, Kinney MO, Harbinson MT. Plasma levels of intermedin (adrenomedullin-2) in healthy human volunteers and patients with heart failure. Peptides 2016; 76:19-29. [PMID: 26767798 DOI: 10.1016/j.peptides.2015.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2015] [Revised: 11/23/2015] [Accepted: 12/15/2015] [Indexed: 01/17/2023]
Abstract
Intermedin/adrenomedullin-2 (IMD) is a member of the adrenomedullin/CGRP peptide family. Less is known about the distribution of IMD than for other family members within the mammalian cardiovascular system, particularly in humans. The aim was to evaluate plasma IMD levels in healthy subjects and patients with chronic heart failure. IMD and its precursor fragments, preproIMD(25-56) and preproIMD(57-92), were measured by radioimmunoassay in 75 healthy subjects and levels of IMD were also compared to those of adrenomedullin (AM) and mid-region proadrenomedullin(45-92) (MRproAM(45-92)) in 19 patients with systolic heart failure (LVEF<45%). In healthy subjects, plasma levels (mean+SE) of IMD (6.3+0.6 pg ml(-1)) were lower than, but correlated with those of AM (25.8+1.8 pg ml(-1); r=0.49, p<0.001). Plasma preproIMD(25-56) (39.6+3.1 pg ml(-1)), preproIMD(57-92) (25.9+3.8 pg ml(-1)) and MRproAM(45-92) (200.2+6.7 pg ml(-1)) were greater than their respective bioactive peptides. IMD levels correlated positively with BMI but not age, and were elevated in heart failure (9.8+1.3 pg ml(-1), p<0.05), similarly to MRproAM(45-92) (329.5+41.9 pg ml(-1), p<0.001) and AM (56.8+10.9 pg ml(-1), p<0.01). IMD levels were greater in heart failure patients with concomitant renal impairment (11.3+1.8 pg ml(-1)) than those without (6.5+1.0 pg ml(-1); p<0.05). IMD and AM were greater in patients receiving submaximal compared with maximal heart failure drug therapy and were decreased after 6 months of cardiac resynchronization therapy. In conclusion, IMD is present in the plasma of healthy subjects less abundantly than AM, but is similarly correlated weakly with BMI. IMD levels are elevated in heart failure, especially with concomitant renal impairment, and tend to be reduced by high intensity drug or pacing therapy.
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Affiliation(s)
- David Bell
- School of Medicine, Dentistry and Biomedical Sciences, The Queen's University of Belfast, Northern Ireland, UK.
| | | | - Anita Lavery
- Hillingdon Hospitals NHS Trust, London, England, UK
| | - Katie Megaw
- Southeastern Health and Social Care Trust, Northern Ireland, UK
| | - Michael O Kinney
- Belfast Health and Social Care Trust, Belfast City Hospital, Northern Ireland, UK
| | - Mark T Harbinson
- School of Medicine, Dentistry and Biomedical Sciences, The Queen's University of Belfast, Northern Ireland, UK; Belfast Health and Social Care Trust, Belfast City Hospital, Northern Ireland, UK
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11
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Zhang H, Zhang SY, Jiang C, Li Y, Xu G, Xu MJ, Wang X. Intermedin/adrenomedullin 2 polypeptide promotes adipose tissue browning and reduces high-fat diet-induced obesity and insulin resistance in mice. Int J Obes (Lond) 2016; 40:852-60. [PMID: 26786353 DOI: 10.1038/ijo.2016.2] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Revised: 11/06/2015] [Accepted: 12/06/2015] [Indexed: 12/31/2022]
Abstract
OBJECTIVES There is an urgent need to develop interventions and policies to mitigate the health effects of obesity by targeting its metabolic mediators. Adrenomedullin 2 (AM2)/intermedin (IMD) is a secreted peptide that has an important role in protecting the cardiovascular system. However, the role of AM2 in type 2 diabetes is unknown. METHODS Wild-type (WT) and aP2/AM2 transgenic (aAM2-tg) mice were fed a high-fat diet (HFD) for 8 weeks, and WT mice were treated with AM2 through mini-osmotic pumps. Indirect calorimetry, ambulatory activity and food intake, hyperinsulinemic-euglycemic clamp test, glucose and insulin tolerance tests were used for assessing insulin resistance. Rat primary adipocytes and pre-adipocyte-derived adipocytes were used for in vitro experiments. Real-time PCR and western blot were used for analyses of gene expression and protein level. RESULTS AM2 and receptor activity-modifying proteins expressions were significantly decreased in the adipose tissue of obese mice. AM2 treatment significantly reduced blood glucose, fasting serum insulin and free fatty acid levels, improved glucose tolerance and insulin sensitivity, and increased the glucose infusion rate during a hyperinsulinemic-euglycemic clamp test, indicating ameliorated HFD-induced insulin resistance. These effects were consistently observed in aAM2-tg mice under HFD conditions, whereas the aAM2-tg mice showed less weight gain and improved glucose tolerance and insulin sensitivity. More importantly, the aAM2-tg mice had increased oxygen consumption and CO2 production, reflecting more energy expenditure. These effects may be due to increased AMP-activated protein kinase phosphorylation and reduced peroxisome proliferator-activated receptor gamma co-activator 1α (PGC1α) acetylation, which result in interactions between PGC1α and PR domain containing 16 and then promote uncoupling protein 1 (UCP1) expression in adipocytes. CONCLUSIONS These results indicate that endogenous AM2 might be involved in energy metabolism in adipocytes through the upregulation of UCP1 expression.
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Affiliation(s)
- H Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - S-Y Zhang
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - C Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - Y Li
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - G Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - M-J Xu
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - X Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Science, Peking University Health Science Center, Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
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Yamac AH, Bacaksiz A, Ismailoglu Z, Kucukbuzcu S, Sevgili E, Asoglu E, Nasifov M, Jafarov P, Erdogan E, Goktekin O. Implication of plasma intermedin levels in patients who underwent first-time diagnostic coronary angiography: a single centre, cross-sectional study. BMC Cardiovasc Disord 2014; 14:182. [PMID: 25495100 PMCID: PMC4271361 DOI: 10.1186/1471-2261-14-182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 11/26/2014] [Indexed: 11/10/2022] Open
Abstract
Background Intermedin (IMD) is involved in the prevention of atherosclerotic plaque progression, possessing cardioprotective effects from hypertrophy, fibrosis and ischemia-reperfusion injury. Elevated plasma IMD levels have been demonstrated in patients with acute coronary syndromes. No human study has examined the role of IMD in stable patients who underwent diagnostic coronary angiography with suspicion of coronary artery disease (CAD). Thus we investigated the role of IMD as a biomarker to discriminate patients with CAD and predict those with severe disease who require early and intensive therapeutic intervention before presenting with acute coronary syndrome. Methods Eligible two hundred and thirty-eight consecutive patients (123 males, mean age 58.4 ± 10.0 years) who underwent first-time diagnostic coronary angiography were included in this study. Plasma concentrations of IMD were measured from arterial blood samples by the enzyme-linked immunosorbent assay. Patients were divided into three groups according to the presence and degree of CAD, consisting of 48 patients with normal coronary anatomy (Group 1), 111 patients with < 50% coronary stenosis (Group 2), and 79 patients with ≥ 50% stenosis in at least one of the major coronary arteries (group 3). The severity and extent of CAD was evaluated by calculations of the vessel, Gensini, and SYNTAX scores. Results Circulating plasma IMD levels in patients with CAD were significantly higher than those in patients without CAD (157.7 ± 9.6, 134.8 ± 11.9, and 117.6 ± 7.9 pg/mL in groups 3, 2 and 1 respectively; p < 0.001). Besides, plasma IMD levels were correlated with Gensini and SYNTAX scores (rs = 0.742, and rs = 0.296, respectively; p < 0.05). The presence of ≥50% coronary artery stenosis could be predicted if a cut-off value of 147.7 pg/mL for plasma IMD was used with 88.6% sensitivity and 88.7% specificity. Moreover, a plasma IMD level of <126.6 pg/mL could discriminate a patient with normal coronary arteries from patients with angiographically proven CAD with a sensitivity and specificity of 84.7%, and 83.3% respectively. Conclusions We demonstrated that IMD might be used as a biomarker to predict CAD and its severity in patients who underwent first time diagnostic coronary angiography.
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Affiliation(s)
- Aylin Hatice Yamac
- Faculty of Medicine, Department of Cardiology, BezmiÂlem Foundation University, Adnan Menderes Avenue, Vatan Street, 34093 Fatih, Istanbul, Turkey.
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13
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Azevedo JCD, Reis BCC, Barreto NMPB, F Junior DS, Prezotti LS, Procaci VR, Octaviano VW, Volschan A, Mesquita ET, Mesquita CT. BNP was associated with ischemic myocardial scintigraphy and death in patients at chest pain unit. Arq Bras Cardiol 2014; 104:16-23. [PMID: 25409879 PMCID: PMC4387607 DOI: 10.5935/abc.20140175] [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: 01/31/2014] [Accepted: 07/22/2014] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Recent studies have suggested that B-type Natriuretic Peptide (BNP) is an important predictor of ischemia and death in patients with suspected acute coronary syndrome. Increased levels of BNP are seen after episodes of myocardial ischemia and may be related to future adverse events. OBJECTIVES To determine the prognostic value of BNP for major cardiac events and to evaluate its association with ischemic myocardial perfusion scintigraphy (MPS). METHODS This study included retrospectively 125 patients admitted to the chest pain unit between 2002 and 2006, who had their BNP levels measured on admission and underwent CPM for risk stratification. BNP values were compared with the results of the MPS. The chi-square test was used for qualitative variables and the Student t test, for quantitative variables. Survival curves were adjusted using the Kaplan-Meier method and analyzed by using Cox regression. The significance level was 5%. RESULTS The mean age was 63.9 ± 13.8 years, and the male sex represented 51.2% of the sample. Ischemia was found in 44% of the MPS. The mean BNP level was higher in patients with ischemia compared to patients with non-ischemic MPS (188.3 ± 208.7 versus 131.8 ± 88.6; p = 0.003). A BNP level greater than 80 pg/mL was the strongest predictor of ischemia on MPS (sensitivity = 60%, specificity = 70%, accuracy = 66%, PPV = 61%, NPV = 70%), and could predict medium-term mortality (RR = 7.29, 95% CI: 0.90-58.6; p = 0.045) independently of the presence of ischemia. CONCLUSIONS BNP levels are associated with ischemic MPS findings and adverse prognosis in patients presenting with acute chest pain to the emergency room, thus, providing important prognostic information for an unfavorable clinical outcome.
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Magnetic microparticle-based SELEX process for the identification of highly specific aptamers of heart marker--brain natriuretic peptide. Mikrochim Acta 2014. [DOI: 10.1007/s00604-014-1338-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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15
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Tang B, Zhong Z, Shen HW, Wu HP, Xiang P, Hu B. Intermedin as a prognostic factor for major adverse cardiovascular events in patients with ST-segment elevation acute myocardial infarction. Peptides 2014; 58:98-102. [PMID: 24969626 DOI: 10.1016/j.peptides.2014.06.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 06/06/2014] [Accepted: 06/06/2014] [Indexed: 12/15/2022]
Abstract
Intermedin functions systemically as a potent vasodilator and its plasma levels have been shown to be elevated in patients with acute myocardial infarction. This study aimed to evaluate the prognostic value of plasma intermedin level in the patients with ST-segment elevation acute myocardial infarction. Plasma intermedin concentrations of 128 patients and 128 healthy controls were determined using a radioimmunoassay. Patients were followed up for 6 months for major adverse cardiovascular events (MACE) consisting of cardiovascular mortality, reinfarction, hospitalization for decompensated heart failure, and lift-threatening arrhythmia. The association of plasma intermedin levels with MACE was investigated by univariate and multivariate analyses. Plasma intermedin levels were significantly higher in patients than in healthy subjects. Elevated plasma level of intermedin was identified as an independent predictor of MACE. Receiver operating characteristic curve analysis showed that plasma intermedin levels had high predictive value for MACE. Moreover, its predictive value was similar to Global Registry of Acute Coronary Events scores' based on area under curve. Meantime, it obviously improved Global Registry of Acute Coronary Events scores' predictive value in a combined logistic-regression model. In multivariate Cox's proportional hazard analysis, plasma intermedin level emerged as an independent predictor of MACE-free survival. Thus, our results suggest that high plasma intermedin level is associated with poor outcomes of patients and may be a useful prognostic biomarker in ST-segment elevation acute myocardial infarction.
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Affiliation(s)
- Bei Tang
- Department of Critical Care Medicine, The First People's Hospital of Jiande City, 599 Yanzhou Main Road, Jiande 311600, China
| | - Ze Zhong
- Department of Critical Care Medicine, The First People's Hospital of Jiande City, 599 Yanzhou Main Road, Jiande 311600, China.
| | - Hong-Wei Shen
- Department of Critical Care Medicine, The First People's Hospital of Jiande City, 599 Yanzhou Main Road, Jiande 311600, China
| | - Hui-Ping Wu
- Department of Critical Care Medicine, The First People's Hospital of Jiande City, 599 Yanzhou Main Road, Jiande 311600, China
| | - Peng Xiang
- Department of Critical Care Medicine, The First People's Hospital of Jiande City, 599 Yanzhou Main Road, Jiande 311600, China
| | - Bin Hu
- Department of Critical Care Medicine, The First People's Hospital of Jiande City, 599 Yanzhou Main Road, Jiande 311600, China
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Cabiati M, Sabatino L, Svezia B, Caruso R, Verde A, Caselli C, Prescimone T, Giannessi D, Del Ry S. Adrenomedullin and intermedin gene transcription is increased in leukocytes of patients with chronic heart failure at different stages of the disease. Peptides 2014; 55:13-6. [PMID: 24531032 DOI: 10.1016/j.peptides.2014.01.028] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 01/28/2014] [Accepted: 01/28/2014] [Indexed: 11/15/2022]
Abstract
Adrenomedullin (ADM) is a vasodilatory peptide expressed in many tissues. Its levels are elevated in various diseases including chronic heart failure (CHF) and it has been suggested that the up-regulation of ADM in cardiac disease represents a protective mechanism. Similarly, intermedin (IMD), a novel member of the calcitonin/calcitonin gene-related peptide family, is considered a potential endogenous protector of the heart. Previous studies demonstrated that in CHF patients, elevated plasma concentrations of ADM and IMD reflect the patient's disease severity and prognosis, while the behavior of mRNA expression is not known. The aim of this study was to evaluate ADM/IDM transcriptomic profiling in human leukocytes of CHF patients as a function of clinical severity, assessing possible changes with respect to healthy subjects (C). mRNA expression was evaluated by Real-Time PCR and total RNA was extracted from leukocytes of C (n=8) and from CHF patients (NYHA I-II n=10; NYHA III-IV n=14) with PAXgene Blood RNA Kit. Significantly higher levels of ADM and IMD mRNA were found in CHF as a function of clinical severity (ADM: C=0.03 ± 0.013, NYHA I-II=0.11 ± 0.084, NYHA III-IV=11.46 ± 4.72, p=0.037 C vs NYHA III-IV, p=0.028 NYHA I-II vs NYHA III-IV; IMD: C=0.158 ± 0.041, NYHA I-II=0.93 ± 0.40, NYHA III-IV=2.6 ± 0.67, p=0.014 C vs NYHA III-IV, p=0.014 NYHA I-II vs NYHA III-IV). This study highlights, for the first time, the possibility of evaluating ADM and IMD mRNA expression in human whole blood samples by Real-Time PCR study providing further relevant information and providing a more complete interpretation of the pathophysiology of the disease.
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Affiliation(s)
- Manuela Cabiati
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy
| | - Laura Sabatino
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy
| | - Benedetta Svezia
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy
| | | | - Alessandro Verde
- Cardiovascular Department, Niguarda Ca' Granda Hospital, Milan, Italy
| | - Chiara Caselli
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy
| | - Tommaso Prescimone
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy
| | - Daniela Giannessi
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy
| | - Silvia Del Ry
- CNR Institute of Clinical Physiology, Laboratory of Cardiovascular Biochemistry, Pisa, Italy.
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Xu L, Qian W, Li W, Liu J, He H, Li G, Cao Y, Yu Y. The severity of coronary artery disease and reversible ischemia revealed by N-terminal pro-brain natriuretic peptide in patients with unstable angina and preserved left ventricular function. Peptides 2014; 52:143-8. [PMID: 24412773 DOI: 10.1016/j.peptides.2013.12.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2013] [Revised: 12/27/2013] [Accepted: 12/28/2013] [Indexed: 11/19/2022]
Abstract
The association between the levels of N-terminal pro-brain natriuretic peptide (NT-proBNP) and the severity of coronary artery disease (CAD) diagnosed by coronary angiography and other approaches has been investigated. The clinical application of NT-proBNP is restricted by the drawbacks of these techniques now available in screening out patients who need intensive or conservative treatment. Fractional flow reserve (FFR) is superior to coronary angiography and other functional indicators. Accordingly, we designed to investigate the association between NT-proBNP and myocardial ischemia from the perspective of anatomy and physiology in patients with unstable angina and preserved left ventricular function. Plasma samples were collected from 110 patients and NT-proBNP levels were measured by radioimmunoassay. The severity of coronary artery stenosis in patients was measured by coronary angiography and FFR. Stenosis ≥50% in the left main artery or stenosis of 70%, and fractional flow reserve (FFR) ≤0.80 in one or more coronary branches with diameter ≥2mm were defined as "positive", which require revascularization. NT-proBNP levels increased progressively between patients with negative and positive angiographic results (p<0.05), and between FFR-negative and FFR-positive patients (p<0.05). A significant correlation was observed between logNT-proBNP and logGS (GS=Gensini score, p<0.001). NT-proBNP level serves as a predictor of positive results of angiographic stenosis and FFR, with the area under the receiver operating characteristic curve being 0.697 and 0.787, respectively. NT-proBNP levels are correlated with the severity of anatomic coronary obstruction and inducible myocardial ischemia, but NT-proBNP per se is insufficient to identify clinically significant angiographic and physiological stenoses.
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Affiliation(s)
- Luhong Xu
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, 84 West Huaihai Road, Xuzhou, Jiangsu 221002, China
| | - Wenhao Qian
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical College, 99 West Huaihai Road, Xuzhou, Jiangsu 221002, China.
| | - Wenhua Li
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical College, 99 West Huaihai Road, Xuzhou, Jiangsu 221002, China
| | - Jiali Liu
- Department of Cardiology, The Affiliated Hospital of Xuzhou Medical College, 99 West Huaihai Road, Xuzhou, Jiangsu 221002, China
| | - Haiyan He
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, 84 West Huaihai Road, Xuzhou, Jiangsu 221002, China
| | - Gonghao Li
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, 84 West Huaihai Road, Xuzhou, Jiangsu 221002, China
| | - Yan Cao
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, 84 West Huaihai Road, Xuzhou, Jiangsu 221002, China
| | - Yaren Yu
- Institute of Cardiovascular Disease Research, Xuzhou Medical College, 84 West Huaihai Road, Xuzhou, Jiangsu 221002, China
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Li H, Bian Y, Zhang N, Guo J, Wang C, Lau WB, Xiao C. Intermedin protects against myocardial ischemia-reperfusion injury in diabetic rats. Cardiovasc Diabetol 2013; 12:91. [PMID: 23777472 PMCID: PMC3703263 DOI: 10.1186/1475-2840-12-91] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 06/14/2013] [Indexed: 12/20/2022] Open
Abstract
Background Diabetic patients, through incompletely understood mechanisms, endure exacerbated ischemic heart injury compared to non-diabetic patients. Intermedin (IMD) is a novel calcitonin gene-related peptide (CGRP) superfamily member with established cardiovascular protective effects. However, whether IMD protects against diabetic myocardial ischemia/reperfusion (MI/R) injury is unknown. Methods Diabetes was induced by streptozotocin in Sprague–Dawley rats. Animals were subjected to MI via left circumflex artery ligation for 30 minutes followed by 2 hours R. IMD was administered formally 10 minutes before R. Outcome measures included left ventricular function, oxidative stress, cellular death, infarct size, and inflammation. Results IMD levels were significantly decreased in diabetic rats compared to control animals. After MI/R, diabetic rats manifested elevated intermedin levels, both in plasma (64.95 ± 4.84 pmol/L, p < 0.05) and myocardial tissue (9.8 ± 0.60 pmol/L, p < 0.01) compared to pre-MI control values (43.62 ± 3.47 pmol/L and 4.4 ± 0.41). IMD administration to diabetic rats subjected to MI/R decreased oxidative stress product generation, apoptosis, infarct size, and inflammatory cytokine release (p < 0.05 or p < 0.01). Conclusions By reducing oxidative stress, inflammation, and apoptosis, IMD may represent a promising novel therapeutic target mitigating diabetic ischemic heart injury.
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Lv Z, Wu K, Chen X, Zhang X, Hong B. Plasma intermedin levels in patients with acute myocardial infarction. Peptides 2013; 43:121-5. [PMID: 23499766 DOI: 10.1016/j.peptides.2013.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Revised: 03/07/2013] [Accepted: 03/07/2013] [Indexed: 11/21/2022]
Abstract
It has been shown that adrenomedullin (ADM) may function as a cardiovascular-regulatory peptide in humans. Intermedin (IMD) is a newly discovered peptide related to ADM and has a greater range of biological effects on the cardiovascular in animal experiments. The purpose of the study was to investigate the pathophysiological role of IMD in patients with acute myocardial infarction (AMI). The present study included twenty patients with acute ST-segment elevation myocardial infarction (STEMI), thirty-three with stable coronary heart disease (SCHD), and eighteen healthy controls. Plasma levels of IMD, malonaldehyde (MDA), and superoxide dismutase (SOD) and cardiac biomarkers were determined at one, two, four and seven days following AMI. Plasma IMD levels were significantly increased on day 1 in AMI patients when compared with SCHD subjects (P=0.014), and reached a peak of 181.88 ± 9.47 pg/ml at 96 h. Plasma IMD concentrations were correlated with MDA and SOD. Furthermore, patients with severe lesions in their coronary arteries tended to have higher plasma IMD levels (P<0.05) in AMI patients. A significant increase in plasma IMD following AMI may be associated with oxidative stress, and could be used as a marker to reflect the severity of the coronary stenosis.
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Affiliation(s)
- Zhengbing Lv
- Department of Cardiology, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
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