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Sánchez-Aguilar M, Ibarra-Lara L, Cano-Martínez A, Soria-Castro E, Castrejón-Téllez V, Pavón N, Osorio-Yáñez C, Díaz-Díaz E, Rubio-Ruíz ME. PPAR Alpha Activation by Clofibrate Alleviates Ischemia/Reperfusion Injury in Metabolic Syndrome Rats by Decreasing Cardiac Inflammation and Remodeling and by Regulating the Atrial Natriuretic Peptide Compensatory Response. Int J Mol Sci 2023; 24:ijms24065321. [PMID: 36982395 PMCID: PMC10049157 DOI: 10.3390/ijms24065321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/06/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Metabolic syndrome (MetS) is a cluster of factors that increase the risk of developing diabetes, stroke, and heart failure. The pathophysiology of injury by ischemia/reperfusion (I/R) is highly complex and the inflammatory condition plays an important role by increasing matrix remodeling and cardiac apoptosis. Natriuretic peptides (NPs) are cardiac hormones with numerous beneficial effects mainly mediated by a cell surface receptor named atrial natriuretic peptide receptor (ANPr). Although NPs are powerful clinical markers of cardiac failure, their role in I/R is still controversial. Peroxisome proliferator-activated receptor α agonists exert cardiovascular therapeutic actions; however, their effect on the NPs’ signaling pathway has not been extensively studied. Our study provides important insight into the regulation of both ANP and ANPr in the hearts of MetS rats and their association with the inflammatory conditions caused by damage from I/R. Moreover, we show that pre-treatment with clofibrate was able to decrease the inflammatory response that, in turn, decreases myocardial fibrosis, the expression of metalloprotease 2 and apoptosis. Treatment with clofibrate is also associated with a decrease in ANP and ANPr expression.
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Affiliation(s)
- María Sánchez-Aguilar
- Department of Pharmacology, Juan Badiano 1, Sección XVI, Tlalpan, Mexico City 14080, Mexico; (M.S.-A.); (L.I.-L.); (N.P.)
| | - Luz Ibarra-Lara
- Department of Pharmacology, Juan Badiano 1, Sección XVI, Tlalpan, Mexico City 14080, Mexico; (M.S.-A.); (L.I.-L.); (N.P.)
| | - Agustina Cano-Martínez
- Department of Physiology, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico; (A.C.-M.); (V.C.-T.)
| | - Elizabeth Soria-Castro
- Department of Cardiovascular Biomedicine, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico;
| | - Vicente Castrejón-Téllez
- Department of Physiology, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico; (A.C.-M.); (V.C.-T.)
| | - Natalia Pavón
- Department of Pharmacology, Juan Badiano 1, Sección XVI, Tlalpan, Mexico City 14080, Mexico; (M.S.-A.); (L.I.-L.); (N.P.)
| | - Citlalli Osorio-Yáñez
- Departamento de Medicina Genómica y Toxicología Ambiental, Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70228, Ciudad de México 04510, Mexico;
- Laboratorio de Fisiología Cardiovascular y Transplante Renal, Unidad de Investigación UNAM-INCICH, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico
| | - Eulises Díaz-Díaz
- Department of Reproductive Biology, Instituto Nacional de Ciencias Médicas y de la Nutrición “Salvador Zubirán”, Vasco de Quiroga 15, Sección XVI, Tlalpan, México City 14000, Mexico;
| | - María Esther Rubio-Ruíz
- Department of Physiology, Instituto Nacional de Cardiología Ignacio Chávez, Juan Badiano 1, Sección XVI, Tlalpan, México City 14080, Mexico; (A.C.-M.); (V.C.-T.)
- Correspondence:
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2
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Liu X, Zhang W, Han Z. Decreased circulating follicular regulatory T cells in patients with dilated cardiomyopathy. Braz J Med Biol Res 2021; 54:e11232. [PMID: 34669781 PMCID: PMC8521538 DOI: 10.1590/1414-431x2021e11232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 06/01/2021] [Indexed: 12/28/2022] Open
Abstract
Follicular regulatory T cells (Tfr) have critical functions in inflammatory and autoimmune disorders. The main purpose of the current work was to assess Tfr cell frequency in patients with dilated cardiomyopathy (DCM). Flow cytometry showed that, compared with normal controls, DCM cases showed markedly reduced Tfr cell rates and Tfr/Tfh ratios, but significantly increased follicular helper T cell (Tfh) rates. Correlation analysis showed that the Tfr rate in DCM patients was positively correlated with left ventricular ejection fraction (LVEF), and negatively correlated with N-terminal brain natriuretic peptide (NT-proBNP) levels. Lower Foxp3 and higher Bcl-6, ICOS, and PD-1 mRNA expression levels were found in patients with DCM. In addition, plasma interleukin (IL)-6, tumor necrosis factor (TNF)-α, and IL-21 levels were significantly increased in DCM cases. Moreover, IgG and IgG3 levels were also elevated in individuals with DCM. Correlation analysis showed that the Tfr rate in DCM patients was negatively correlated with IgG and IgG3, while the Tfh rate was positively correlated with IgG and IgG3. Changes in circulating Tfr levels may have a critical immunomodulatory function in DCM and may become a new therapeutic target for DCM.
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Affiliation(s)
- Xixi Liu
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Academy of Medical Sciences of Zhengzhou University, Zhengzhou, Henan, China
| | - Wencai Zhang
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Academy of Medical Sciences of Zhengzhou University, Zhengzhou, Henan, China
| | - Zhanying Han
- Department of Cardiology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan, China.,Academy of Medical Sciences of Zhengzhou University, Zhengzhou, Henan, China
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Tian M, Xue J, Dai C, Jiang E, Zhu B, Pang H. CircSLC8A1 and circNFIX can be used as auxiliary diagnostic markers for sudden cardiac death caused by acute ischemic heart disease. Sci Rep 2021; 11:4695. [PMID: 33633191 PMCID: PMC7907149 DOI: 10.1038/s41598-021-84056-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 02/11/2021] [Indexed: 12/16/2022] Open
Abstract
Sudden cardiac death (SCD) caused by acute ischemic heart disease (IHD) is a major cause of sudden death worldwide. Circular RNAs (circRNAs) are abundant in the heart and play important roles in cardiovascular diseases, but the role of circRNAs as biomarkers in the forensic diagnosis of SCD caused by acute IHD remains poorly characterized. To investigate the potential of two heart-enriched circRNAs, circNFIX and circSLC8A1, we explored the expression of these two circRNAs in different kinds of commonly used IHD models, and further verified their expressions in forensic autopsy cases. The results from both the IHD rat and H9c2 cell models revealed that circSlc8a1 level was upregulated, while the circNfix level was elevated in the early stage of ischemia and subsequently downregulated. The time-dependent expression patterns of the two circRNAs suggested their potential as SCD biomarkers. In autopsy cases, the results showed that the expression of these two circRNAs in the myocardium with acute IHD-related SCDs corresponded to the observations in the ischemic models. Further analysis related to myocardial ischemia indicated that circSLC8A1 showed high sensitivity and specificity for myocardial infarction and was positively correlated with creatine kinase MB in pericardial fluid. Downregulated circNFIX level could indicate the ischemic myocardial damage, and it was negatively correlated with the coronary artery stenosis grade. The combination of circSLC8A1 and circNFIX had better performance to discriminate IHD-related SCDs. The results suggested that circSLC8A1 and circNFIX may be used as auxiliary diagnostic markers for SCD caused by acute IHD in forensic medicine.
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Affiliation(s)
- Meihui Tian
- Department of Forensic Genetics and Biology, School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, P.R. China
| | - Jiajia Xue
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, P.R. China
| | - Cuiyun Dai
- Department of Forensic Genetics and Biology, School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, P.R. China
| | - Enzhu Jiang
- Department of Forensic Genetics and Biology, School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, P.R. China
| | - Baoli Zhu
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, P.R. China
| | - Hao Pang
- Department of Forensic Genetics and Biology, School of Forensic Medicine, China Medical University, No. 77 Puhe Road, Shenyang North New Area, Shenyang, 110122, P.R. China.
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Jin L, Wang C, Liu J, Li P, Li J, Cui X, Wang Y. Pseudo-ginsengenin DQ ameliorated aconitine-induced arrhythmias by influencing Ca 2+ and K + currents in ventricular myocytes. RSC Adv 2020; 10:25999-26005. [PMID: 35518596 PMCID: PMC9055354 DOI: 10.1039/d0ra01683g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 06/08/2020] [Indexed: 11/21/2022] Open
Abstract
Pseudo-ginsengenin DQ (PDQ) is the product of the oxidative cyclization of protopanaxadiol. PDQ exhibits various bioactivities, including reversal of multidrug resistance in cancer, renal protective effects against acute nephrotoxicity and attenuating myocardial ischemia injury induced by isoproterenol or ligation of coronary arterials, but its effect on arrhythmias has not been clear until now. Because of the complicated effects of ginseng on the cardiovascular system, it is necessary to investigate whether PDQ affects arrhythmias, which are always concomitant with other cardiac diseases. Aconitine was used to induce arrhythmia in vivo. To understand its electrophysiological fundamental, whole-cell patch-clamp was used to record the L-type calcium current (ICa,L) and potassium currents (IK and IK1) in the ventricular myocytes in rats. Oral administration of PDQ exerted obvious antiarrhythmic effects, as indicated by the decreased incidence rate, lower number of occurrences, and shorter duration time of ventricular tachycardia and ventricular tachycardia, decreased mortality rate and increased survival time. ICa,L and IK were inhibited by PDQ treatment while IK1 was not affected. To conclude, PDQ may have an anti-arrhythmia effect through inhibiting ICa,L and IK. Pseudo-ginsengenin DQ (PDQ) is the product of the oxidative cyclization of protopanaxadiol. PDQ could ameliorate aconitine-induced arrhythmias by influencing Ca2+ and K+ currents in ventricular myocytes.![]()
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Affiliation(s)
- Lifang Jin
- School of Pharmaceutical Sciences
- Jilin University
- Changchun 130021
- China
- Department of Hematology and Oncology
| | - Cuizhu Wang
- School of Pharmaceutical Sciences
- Jilin University
- Changchun 130021
- China
| | - Jinping Liu
- School of Pharmaceutical Sciences
- Jilin University
- Changchun 130021
- China
| | - Pingya Li
- School of Pharmaceutical Sciences
- Jilin University
- Changchun 130021
- China
| | - Jing Li
- College of Basic Medical Sciences
- Jilin University
- Changchun
- China
| | - Xiaoli Cui
- College of Basic Medical Sciences
- Jilin University
- Changchun
- China
| | - Yi Wang
- School of Pharmaceutical Sciences
- Jilin University
- Changchun 130021
- China
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Tian M, Xiao Y, Xue J, Zhang Y, Jia Y, Luo X, Wang T, Zhu B, Cao Z. The Expression of BNP, ET-1, and TGF-β1 in Myocardium of Rats with Ventricular Arrhythmias. Int J Mol Sci 2019; 20:ijms20235845. [PMID: 31766450 PMCID: PMC6928624 DOI: 10.3390/ijms20235845] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 11/12/2019] [Accepted: 11/20/2019] [Indexed: 02/05/2023] Open
Abstract
Ventricular arrhythmia (VA) is a major component of sudden cardiac death (SCD). To investigate the expression of brain natriuretic peptide (BNP), endothelin-1 (ET-1), and transforming growth factor-beta 1 (TGF-β1) during VA, we established a rat model of VA induced by BaCl2 solution through a microinjector pump. PD142893 (ET-1 receptor blocker) and SB431542 (TGF-β1 receptor type I blocker) were used to explore the effect of ET-1 and TGF-β1 on BNP expression in the myocardium after VA. BNP, ET-1, and TGF-β1 in rat myocardium were assayed by western blot and immunohistochemical staining for proteins, and real-time quantitative polymerase chain reaction for mRNAs. We found increased expression of BNP and ET-1 in rat myocardium that was associated with the duration of VA. However, TGF-β1 protein expression remained unchanged. Such early increases in BNP and ET-1 may be attributed to fatal arrhythmias associated with SCD, suggesting these may be novel biomarkers of this disease. After intraperitoneal injection of PD142893 and SB431542, respectively, BNP was downregulated in the myocardium of the left ventricle; however, this was abrogated by co-application of the two inhibitors. These results suggested that both ET-1 and TGF-β1, by specifically binding to their receptors, might be involved in the myocardial synthesis of BNP during VA in vivo.
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MESH Headings
- Animals
- Arrhythmias, Cardiac/complications
- Arrhythmias, Cardiac/genetics
- Arrhythmias, Cardiac/metabolism
- Benzamides/pharmacology
- Death, Sudden, Cardiac/etiology
- Dioxoles/pharmacology
- Endothelin Receptor Antagonists/pharmacology
- Endothelin-1/genetics
- Endothelin-1/metabolism
- Gene Expression
- Male
- Myocardium/metabolism
- Myocardium/pathology
- Natriuretic Peptide, Brain/genetics
- Natriuretic Peptide, Brain/metabolism
- Oligopeptides/pharmacology
- Rats, Sprague-Dawley
- Receptors, Endothelin/metabolism
- Receptors, Transforming Growth Factor beta/antagonists & inhibitors
- Receptors, Transforming Growth Factor beta/metabolism
- Transforming Growth Factor beta1/genetics
- Transforming Growth Factor beta1/metabolism
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Affiliation(s)
| | | | | | | | | | | | | | - Baoli Zhu
- Correspondence: (B.Z.); (Z.C.); Tel.: +86-24-31939433 (B.Z. & Z.C.)
| | - Zhipeng Cao
- Correspondence: (B.Z.); (Z.C.); Tel.: +86-24-31939433 (B.Z. & Z.C.)
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Cao Z, Zhao M, Xu C, Zhang T, Jia Y, Wang T, Zhu B. Evaluation of Agonal Cardiac Function for Sudden Cardiac Death in Forensic Medicine with Postmortem Brain Natriuretic Peptide (BNP) and NT‐proBNP: A Meta‐analysis. J Forensic Sci 2019; 65:686-691. [DOI: 10.1111/1556-4029.14232] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Revised: 10/15/2019] [Accepted: 10/15/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Zhipeng Cao
- Department of Forensic Pathology School of Forensic Medicine China Medical University Shenyang 110122 China
| | - Mengyang Zhao
- Department of Forensic Genetics and Biology School of Forensic Medicine China Medical University Shenyang 110122 China
| | - Chengyang Xu
- The First Affiliated Hospital of China Medical University Shenyang 110001 China
| | - Tianyi Zhang
- Department of Forensic Pathology School of Forensic Medicine China Medical University Shenyang 110122 China
| | - Yuqing Jia
- Department of Forensic Pathology School of Forensic Medicine China Medical University Shenyang 110122 China
| | - Tianqi Wang
- Department of Forensic Pathology School of Forensic Medicine China Medical University Shenyang 110122 China
| | - Baoli Zhu
- Department of Forensic Pathology School of Forensic Medicine China Medical University Shenyang 110122 China
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7
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Diagnostic Roles of Postmortem cTn I and cTn T in Cardiac Death with Special Regard to Myocardial Infarction: A Systematic Literature Review and Meta-Analysis. Int J Mol Sci 2019; 20:ijms20133351. [PMID: 31288395 PMCID: PMC6651768 DOI: 10.3390/ijms20133351] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 06/29/2019] [Accepted: 07/06/2019] [Indexed: 02/06/2023] Open
Abstract
Background: Cardiac troponin I (cTn I) and cardiac troponin T (cTn T) are currently widely used as diagnostic biomarkers for myocardial injury caused by ischemic heart diseases in clinical and forensic medicine. However, no previous meta-analysis has summarized the diagnostic roles of postmortem cTn I and cTn T. The aim of the present study was to meta-analyze the diagnostic roles of postmortem cTn I and cTn T for cardiac death in forensic medicine, present a systematic review of the previous literature, and determine the postmortem cut-off values of cTn I and cTn T. Methods: We searched multiple databases for the related literature, performed a meta-analysis to investigate the diagnostic roles of postmortem cardiac troponins, and analyzed the receiver operating characteristic (ROC) curve to determine their postmortem cut-off values. Results and Conclusions: The present meta-analysis demonstrated that postmortem cTn I and cTn T levels were increased in pericardial fluid and serum in cardiac death, especially in patients with acute myocardial infarction (AMI). We determined the postmortem cut-off value of cTn I in the pericardial fluid at 86.2 ng/mL, cTn I in serum at 9.5 ng/mL, and cTn T in serum at 8.025 ng/mL.
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Cao Z, Zhang T, Xu C, Jia Y, Wang T, Zhu B. AIN-93 Diet as an Alternative Model to Lieber-DeCarli Diet for Alcoholic Cardiomyopathy. Alcohol Clin Exp Res 2019; 43:1452-1461. [PMID: 31034614 DOI: 10.1111/acer.14069] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 04/23/2019] [Indexed: 11/29/2022]
Abstract
BACKGROUND The Lieber-DeCarli alcoholic liquid diet is a classical method for establishing animal models of alcoholic cardiomyopathy (ACM). No study has reported whether the AIN-93 diet, which is widely used as a standard diet for both long-term and short-term studies with laboratory animals, could be used to construct the ACM animal model. The present study intended to investigate whether the AIN-93 diet could be used to establish a mouse ACM model. METHODS Twenty-four C57BL/6 male mice were randomly divided into 4 equally sized groups. In ethanol (EtOH)-fed groups, mice were fed a 4%-EtOH (w/v, 28% of total calories) alcoholic liquid diet of Lieber-DeCarli or the AIN-93 diet for chronic alcohol exposure for 180 days. In control-fed groups, mice were fed with non-EtOH liquid diets with the same calories as EtOH-fed groups. Morphological observations of the hearts and molecular investigation of the brain natriuretic peptide (BNP) were carried out by echocardiography, hematoxylin and eosin (H&E) and immunohistochemistry (IHC) staining, real-time quantitative polymerase chain reaction (qPCR), and enzyme-linked immunosorbent assay. RESULTS Echocardiography showed that mice fed with either the 4%-EtOH Lieber-DeCarli diet or the 4%-EtOH AIN-93 diet had dilated ventricles and poor cardiac function. IHC staining of BNP, qPCR of BNP mRNA, and plasma concentration of BNP showed an up-regulated expression in mice fed with both the 4%-EtOH Lieber-DeCarli and 4%-EtOH AIN-93 diets. Less fatty liver was also observed in mice fed the AIN-93 alcoholic diet than those fed the Lieber-DeCarli alcoholic diet. CONCLUSIONS The AIN-93 alcoholic liquid diet can be used to establish ACM animal models, as with the conventional Lieber-DeCarli alcoholic liquid diet.
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Affiliation(s)
- Zhipeng Cao
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Tianyi Zhang
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Chengyang Xu
- The third clinical department of China Medical University, Shenyang, China
| | - Yuqing Jia
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Tianqi Wang
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
| | - Baoli Zhu
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang, China
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Cao Z, Jia Y, Zhu B. BNP and NT-proBNP as Diagnostic Biomarkers for Cardiac Dysfunction in Both Clinical and Forensic Medicine. Int J Mol Sci 2019; 20:ijms20081820. [PMID: 31013779 PMCID: PMC6515513 DOI: 10.3390/ijms20081820] [Citation(s) in RCA: 134] [Impact Index Per Article: 26.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/09/2019] [Accepted: 04/11/2019] [Indexed: 12/23/2022] Open
Abstract
Currently, brain natriuretic peptide (BNP) and N-terminal proBNP (NT-proBNP) are widely used as diagnostic biomarkers for heart failure (HF) and cardiac dysfunction in clinical medicine. They are also used as postmortem biomarkers reflecting cardiac function of the deceased before death in forensic medicine. Several previous studies have reviewed BNP and NT-proBNP in clinical medicine, however, few articles have reviewed their application in forensic medicine. The present article reviews the biological features, the research and application status, and the future research prospects of BNP and NT-proBNP in both clinical medicine and forensic medicine, thereby providing valuable assistance for clinicians and forensic pathologists.
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Affiliation(s)
- Zhipeng Cao
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang 110122, China.
| | - Yuqing Jia
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang 110122, China.
| | - Baoli Zhu
- Department of Forensic Pathology, School of Forensic Medicine, China Medical University, Shenyang 110122, China.
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Cao ZP, Xue JJ, Zhang Y, Tian MH, Xiao Y, Jia YQ, Zhu BL. Differential expression of B-type natriuretic peptide between left and right ventricles, with particular regard to sudden cardiac death. Mol Med Rep 2017; 16:4763-4769. [PMID: 28765973 PMCID: PMC5647027 DOI: 10.3892/mmr.2017.7136] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 07/14/2017] [Indexed: 01/11/2023] Open
Abstract
The aim of the present study was to investigate the differential expression of B-type natriuretic peptide (BNP) between the left and right ventricle (RV) in sudden cardiac death (SCD). A total of 26 forensic autopsy cases of sudden death (survival time <30 min, postmortem interval <48 h or frozen within 6 h following death) in the present institute were examined. The cases consisted of acute ischemic heart disease (AIHD, n=15) with/without apparent myocardial necrosis as a sign of infarction (acute myocardial infarction, n=6; ischemic heart disease, IHD, n=9), and arrhythmogenic right ventricular cardiomyopathy (ARVC/D, n=5), in addition to traffic accidents and high falls without any pre existing heart disease as control (C, total n=6). BNP was investigated in all cases by the colloidal gold method, hematoxylin-eosin staining, immunohistochemistry (IHC) and the molecular pathological method. The IHC results demonstrated that a positive BNP immunostaining was detected in all groups; however, there was no difference between different causes of death. Pericardial N-terminal (NT)-proBNP concentration was significantly increased in deaths resulting from AIHD and ARVC/D compared with control group. The relative quantification of BNP mRNA demonstrated that relative expression levels of BNP mRNA were significantly increased in the left ventricle (LV) in the AIHD group, and in the RV of the ARVC/D group. The relative quantification difference and ratio of BNP mRNA between LV and RV demonstrated a significantly greater value in the AIHD group compared with control group. BNP mRNA in myocardium and NT-proBNP concentration in pericardial fluid were elevated in SCD patients, and left ventricular dysfunction predominated in AIHD patients, whereas right ventricular dysfunction predominated in ARVC/D patients. The results of the present study suggest the possible use of molecular pathology of BNP for the determination of terminal cardiac function in SCD and analysis of its fatal mechanism in forensic practice.
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Affiliation(s)
- Zhi-Peng Cao
- Department of Forensic Pathology, School of Forensic Medicine of China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Jia-Jia Xue
- Department of Forensic Pathology, School of Forensic Medicine of China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Yuan Zhang
- Department of Forensic Pathology, School of Forensic Medicine of China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Mei-Hui Tian
- Department of Forensic Pathology, School of Forensic Medicine of China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Ying Xiao
- Department of Forensic Pathology, School of Forensic Medicine of China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Yu-Qing Jia
- Department of Forensic Pathology, School of Forensic Medicine of China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Bao-Li Zhu
- Department of Forensic Pathology, School of Forensic Medicine of China Medical University, Shenyang, Liaoning 110122, P.R. China
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