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Doul J, Minaříková M, Charvátová Z, Maxová H. Nitric oxide is involved in the cardioprotection of neonatal rat hearts, but not in neonatal ischemic postconditioning. Physiol Rep 2024; 12:e16147. [PMID: 39097984 DOI: 10.14814/phy2.16147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 06/29/2024] [Accepted: 07/04/2024] [Indexed: 08/06/2024] Open
Abstract
The cardioprotective effect of ischemic preconditioning (IPC) and ischemic postconditioning (IPoC) in adult hearts is mediated by nitric oxide (NO). During the early developmental period, rat hearts exhibit higher resistance to ischemia-reperfusion (I/R) injury, contain higher levels of serum nitrates, and their resistance cannot be further increased by IPC or IPoC. NOS blocker (L-NAME) lowers their high resistance. Wistar rat hearts (postnatal Days 1 and 10) were perfused according to Langendorff and exposed to 40 min of global ischemia followed by reperfusion with or without IPoC. NO and reactive oxygen species donors (DEA-NONO, SIN-1) and L-NAME were administered. Tolerance to ischemia decreased between Days 1 and 10. DEA-NONO (low concentrations) significantly increased tolerance to I/R injury on both Days 1 and 10. SIN-1 increased tolerance to I/R injury on Day 10, but not on Day 1. L-NAME significantly reduced resistance to I/R injury on Day 1, but actually increased resistance to I/R injury on Day 10. Cardioprotection by IPoC on Day 10 was not affected by either NO donors or L-NAME. It can be concluded that resistance of the neonatal heart to I/R injury is NO dependent, but unlike in adult hearts, cardioprotective interventions, such as IPoC, are most likely NO independent.
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Affiliation(s)
- Jan Doul
- Department of Pathophysiology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Marcela Minaříková
- Department of Physiology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Zuzana Charvátová
- Department of Pathophysiology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Hana Maxová
- Department of Pathophysiology, Second Faculty of Medicine, Charles University, Prague, Czech Republic
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
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Hubacher V, Egle M, Graf S, Arnold M, Segiser A, Sanz MN, Casoni D, Garcia Casalta L, Nettelbeck K, Mihalj M, Siepe M, Kadner A, Longnus S. Open- vs. closed-chest pig models of donation after circulatory death. Front Cardiovasc Med 2024; 11:1325160. [PMID: 38938649 PMCID: PMC11210375 DOI: 10.3389/fcvm.2024.1325160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Accepted: 05/27/2024] [Indexed: 06/29/2024] Open
Abstract
Background During donation after circulatory death (DCD), cardiac grafts are exposed to potentially damaging conditions that can impact their quality and post-transplantation outcomes. In a clinical DCD setting, patients have closed chests in most cases, while many experimental models have used open-chest conditions. We therefore aimed to investigate and characterize differences in open- vs. closed-chest porcine models. Methods Withdrawal of life-sustaining therapy (WLST) was simulated in anesthetized juvenile male pigs by stopping mechanical ventilation following the administration of a neuromuscular block. Functional warm ischemic time (fWIT) was defined to start when systolic arterial pressure was <50 mmHg. Hemodynamic changes and blood chemistry were analyzed. Two experimental groups were compared: (i) an open-chest group with sternotomy prior to WLST and (ii) a closed-chest group with sternotomy after fWIT. Results Hemodynamic changes during the progression from WLST to fWIT were initiated by a rapid decline in blood oxygen saturation and a subsequent cardiovascular hyperdynamic (HD) period characterized by temporary elevations in heart rates and arterial pressures in both groups. Subsequently, heart rate and systolic arterial pressure decreased until fWIT was reached. Pigs in the open-chest group displayed a more rapid transition to the HD phase after WLST, with peak heart rate and peak rate-pressure product occurring significantly earlier. Furthermore, the HD phase duration tended to be shorter and less intense (lower peak rate-pressure product) in the open-chest group than in the closed-chest group. Discussion Progression from WLST to fWIT was more rapid, and the hemodynamic changes tended to be less pronounced in the open-chest group than in the closed-chest group. Our findings support clear differences between open- and closed-chest models of DCD. Therefore, recommendations for clinical DCD protocols based on findings in open-chest models must be interpreted with care.
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Affiliation(s)
- Valentin Hubacher
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Manuel Egle
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Selianne Graf
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
- Graduate School for Cellular and Biomedical Sciences, University of Bern, Bern, Switzerland
| | - Maria Arnold
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Adrian Segiser
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Maria Nieves Sanz
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
| | - Daniela Casoni
- Experimental Surgery Facility (ESF), Experimental Animal Center, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Luisana Garcia Casalta
- Experimental Surgery Facility (ESF), Experimental Animal Center, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Kay Nettelbeck
- Experimental Surgery Facility (ESF), Experimental Animal Center, Faculty of Medicine, University of Bern, Bern, Switzerland
| | - Maks Mihalj
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department of Advanced Cardiopulmonary Therapies and Transplantation, University of Texas Health Science Center at Houston, Texas Medical Center, Houston, TX, United States
| | - Matthias Siepe
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Alexander Kadner
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Sarah Longnus
- Department of Cardiac Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Department for BioMedical Research, University of Bern, Bern, Switzerland
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Kolesár DM, Kujal P, Mrázová I, Pokorný M, Škaroupková P, Sadowski J, Červenka L, Netuka I. Sex-Linked Differences in Cardiac Atrophy After Mechanical Unloading Induced by Heterotopic Heart Transplantation. Physiol Res 2024; 73:9-25. [PMID: 38466001 PMCID: PMC11019613 DOI: 10.33549/physiolres.935217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/23/2023] [Indexed: 04/26/2024] Open
Abstract
No information is available about sex-related differences in unloading-induced cardiac atrophy. We aimed to compare the course of unloading-induced cardiac atrophy in intact (without gonadectomy) male and female rats, and in animals after gonadectomy, to obtain insight into the influence of sex hormones on this process. Heterotopic heart transplantation (HT((x)) was used as a model for heart unloading. Cardiac atrophy was assessed as the weight ratio of heterotopically transplanted heart weight (HW) to the native HW on days 7 and 14 after HTx in intact male and female rats. In separate experimental groups, gonadectomy was performed in male and female recipient animals 28 days before HT(x) and the course of cardiac atrophy was again evaluated on days 7 and 14 after HT(x). In intact male rats, HT(x) resulted in significantly greater decreases in whole HW when compared to intact female rats. The dynamics of the left ventricle (LV) and right ventricle (RV) atrophy after HT(x) was quite similar to that of whole hearts. Gonadectomy did not have any significant effect on the decreases in whole HW, LV, and RV weights, with similar results in male and female rats. Our results show that the development of unloading-induced cardiac atrophy is substantially reduced in female rats when compared to male rats. Since gonadectomy did not alter the course of cardiac atrophy after HTx, similarly in both male and female rats, we conclude that sex-linked differences in the development of unloading-induced cardiac atrophy are not caused by the activity of sex hormones.
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Affiliation(s)
- D M Kolesár
- Department of Cardiovascular Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Li M, Liu Y, Huang B, Zhou G, Pan M, Jin J, Wang F, Wang Y, Ren X, Xu B, Hu B, Gu N. A Self-Homing and Traceable Cardiac Patch Leveraging Ferumoxytol for Spatiotemporal Therapeutic Delivery. ACS NANO 2024; 18:3073-3086. [PMID: 38227475 DOI: 10.1021/acsnano.3c08346] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
Mesenchymal stem cell (MSC)-based cardiac patches are envisioned to be a promising treatment option for patients with myocardial infarction. However, their therapeutic efficacy and duration are hampered due to their limited retention on the epicardium. We engineered a scaffold-free MSC sheet with an inherent ability to migrate into the infarcted myocardium, a strategy enabled by actively establishing a sustained intracellular hypoxic environment through the endocytosis of our FDA-approved ferumoxytol. This iron oxide nanoparticle stabilized hypoxia-induced factor-1α, triggering upregulation of the CXC chemokine receptor and subsequent MSC chemotaxis. Thus, MSCs integrated into 2/3 depth of the left ventricular anterior wall in a rat model of acute myocardial infarction and persisted for at least 28 days. This led to spatiotemporal delivery of paracrine factors by MSCs, enhancing cardiac regeneration and function. Ferumoxytol also facilitated the noninvasive MRI tracking of implanted MSCs. Our approach introduces a strategy for mobilizing MSC migration, holding promise for rapid clinical translation in myocardial infarction treatment.
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Affiliation(s)
- Mei Li
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
- National Demonstration Center for Experimental Basic Medical Education, Nanjing Medical University, Nanjing 211166, China
| | - Yiyi Liu
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Bin Huang
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Gaoxin Zhou
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Mingfei Pan
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Juan Jin
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Feng Wang
- Department of Analytical & Testing Center, Nanjing Medical University, Nanjing 211166, China
| | - Yipin Wang
- National Demonstration Center for Experimental Basic Medical Education, Nanjing Medical University, Nanjing 211166, China
| | - Xueyang Ren
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Biao Xu
- Department of Cardiology, Nanjing Drum Tower Hospital, Clinical College of Nanjing Medical University, Nanjing 210008, China
| | - Benhui Hu
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
| | - Ning Gu
- Key Laboratory for Bio-Electromagnetic Environment and Advanced Medical Theranostics, School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing 211166, China
- Medical School, Nanjing University, Nanjing 210093, China
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Lin Z, Jiwani Z, Serpooshan V, Aghaverdi H, Yang PC, Aguirre A, Wu JC, Mahmoudi M. Sex Influences the Safety and Therapeutic Efficacy of Cardiac Nanomedicine Technologies. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023:e2305940. [PMID: 37803920 PMCID: PMC10997742 DOI: 10.1002/smll.202305940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 09/18/2023] [Indexed: 10/08/2023]
Abstract
Nanomedicine technologies are being developed for the prevention, diagnosis, and treatment of cardiovascular disease (CVD), which is the leading cause of death worldwide. Before delving into the nuances of cardiac nanomedicine, it is essential to comprehend the fundamental sex-specific differences in cardiovascular health. Traditionally, CVDs have been more prevalent in males, but it is increasingly evident that females also face significant risks, albeit with distinct characteristics. Females tend to develop CVDs at a later age, exhibit different clinical symptoms, and often experience worse outcomes compared to males. These differences indicate the need for sex-specific approaches in cardiac nanomedicine. This Perspective discusses the importance of considering sex in the safety and therapeutic efficacy of nanomedicine approaches for the prevention, diagnosis, and treatment of CVD.
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Affiliation(s)
- Zijin Lin
- Department of Radiology and Precision Health Program, Michigan State University, East Lansing, MI 48824 USA
| | - Zahra Jiwani
- Department of Radiology and Precision Health Program, Michigan State University, East Lansing, MI 48824 USA
| | - Vahid Serpooshan
- Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of Technology, Atlanta, GA 30322, USA
- Department of Pediatrics, Emory University School of Medicine, Atlanta, GA 30322, USA
- Children’s Healthcare of Atlanta, Atlanta, GA 30322, USA
| | - Haniyeh Aghaverdi
- Department of Radiology and Precision Health Program, Michigan State University, East Lansing, MI 48824 USA
| | - Phillip C Yang
- Department of Medicine, Cardiovascular Medicine and Cardiovascular Institute, Stanford University, Stanford, CA 94309
| | - Aitor Aguirre
- Regenerative Biology and cell Reprogramming Laboratory, Institute for Quantitative Health Sciences and Engineering, Michigan State University, East Lansing, MI 48823, USA
- Department of Biomedical Engineering, Michigan State University, East Lansing, MI 48823, USA
| | - Joseph C. Wu
- Department of Medicine, Cardiovascular Medicine and Cardiovascular Institute, Stanford University, Stanford, CA 94309
- Department of Medicine, Division of Cardiology, Stanford University, Stanford, CA 94305, USA
| | - Morteza Mahmoudi
- Department of Radiology and Precision Health Program, Michigan State University, East Lansing, MI 48824 USA
- Connors Center for Women’s Health & Gender Biology, Brigham & Women’s Hospital, Harvard Medical School, Boston, MA 02115 USA
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Arnold JH, Perl L, Assali A, Codner P, Greenberg G, Samara A, Porter A, Orvin K, Kornowski R, Vaknin Assa H. The Impact of Sex on Cardiogenic Shock Outcomes Following ST Elevation Myocardial Infarction. J Clin Med 2023; 12:6259. [PMID: 37834902 PMCID: PMC10573491 DOI: 10.3390/jcm12196259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Revised: 09/13/2023] [Accepted: 09/27/2023] [Indexed: 10/15/2023] Open
Abstract
BACKGROUND Cardiogenic shock (CS) remains the leading cause of ST elevation myocardial infarction (STEMI)-related mortality. Contemporary studies have shown no sex-related differences in mortality. METHODS STEMI-CS patients undergoing primary percutaneous coronary intervention (PPCI) were included based on a dedicated prospective STEMI database. We compared sex-specific differences in CS characteristics at baseline, during hospitalization, and in subsequent clinical outcomes. Endpoints included all-cause mortality and major adverse cardiac events (MACE). RESULTS Of 3202 consecutive STEMI patients, 210 (6.5%) had CS, of which 63 (30.0%) were women. Women were older than men (73.2 vs. 65.5% y, p < 0.01), and more had hypertension (68.3 vs. 52.8%, p = 0.019) and diabetes (38.7 vs. 24.8%, p = 0.047). Fewer were smokers (13.3 vs. 41.2%, p < 0.01), had previous PCI (9.1 vs. 22.3% p = 0.016), or required IABP (35.3 vs. 51.1% p = 0.027). Women had higher rates of mortality (53.2 vs. 35.3% in-hospital, p = 0.01; 61.3 vs. 41.9% at 1 month, p = 0.01; and 73.8 vs. 52.6% at 3 years, p = 0.05) and MACE (60.6 vs. 41.6% in-hospital, p = 0.032; 66.1 vs. 45.6% at 1 month, p = 0.007; and 62.9 vs. 80.3% at 3 years, p = 0.015). After multivariate adjustment, female sex remained an independent factor for death (HR-2.42 [95% CI 1.014-5.033], p = 0.042) and MACE (HR-1.91 [95% CI 1.217-3.031], p = 0.01). CONCLUSIONS CS complicating STEMI is associated with greater short- and long-term mortality and MACE in women. Sex-focused measures to improve diagnosis and treatment are mandatory for CS patients.
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Affiliation(s)
- Joshua H. Arnold
- Department of Medicine, University of Illinois at Chicago, Chicago, IL 60612, USA
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Leor Perl
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Abid Assali
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
- Department of Cardiology, Meir Medical Center, Kfar-Saba 4428164, Israel
| | - Pablo Codner
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Gabriel Greenberg
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Abid Samara
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Avital Porter
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Katia Orvin
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Ran Kornowski
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
| | - Hana Vaknin Assa
- Department of Cardiology, Rabin Medical Center, Petach-Tikva 4941492, Israel; (L.P.)
- School of Medicine, Tel Aviv University, Tel-Aviv 6997801, Israel
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Medzikovic L, Azem T, Sun W, Rejali P, Esdin L, Rahman S, Dehghanitafti A, Aryan L, Eghbali M. Sex Differences in Therapies against Myocardial Ischemia-Reperfusion Injury: From Basic Science to Clinical Perspectives. Cells 2023; 12:2077. [PMID: 37626887 PMCID: PMC10453147 DOI: 10.3390/cells12162077] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/11/2023] [Accepted: 08/13/2023] [Indexed: 08/27/2023] Open
Abstract
Mortality from myocardial infarction (MI) has declined over recent decades, which could be attributed in large part to improved treatment methods. Early reperfusion is the cornerstone of current MI treatment. However, reoxygenation via restored blood flow induces further damage to the myocardium, leading to ischemia-reperfusion injury (IRI). While experimental studies overwhelmingly demonstrate that females experience greater functional recovery from MI and decreased severity in the underlying pathophysiological mechanisms, the outcomes of MI with subsequent reperfusion therapy, which is the clinical correlate of myocardial IRI, are generally poorer for women compared with men. Distressingly, women are also reported to benefit less from current guideline-based therapies compared with men. These seemingly contradicting outcomes between experimental and clinical studies show a need for further investigation of sex-based differences in disease pathophysiology, treatment response, and a sex-specific approach in the development of novel therapeutic methods against myocardial IRI. In this literature review, we summarize the current knowledge on sex differences in the underlying pathophysiological mechanisms of myocardial IRI, including the roles of sex hormones and sex chromosomes. Furthermore, we address sex differences in pharmacokinetics, pharmacodynamics, and pharmacogenetics of current drugs prescribed to limit myocardial IRI. Lastly, we highlight ongoing clinical trials assessing novel pharmacological treatments against myocardial IRI and sex differences that may underlie the efficacy of these new therapeutic approaches.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Mansoureh Eghbali
- Department of Anesthesiology & Perioperative Medicine, Division of Molecular Medicine, David Geffen School of Medicine, University of California Los Angeles, 10833 Le Conte Ave, CHS BH-550 CHS, Los Angeles, CA 90095, USA (W.S.)
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Chen Q, Akande O, Lesnefsky EJ, Quader M. Influence of sex on global myocardial ischemia tolerance and mitochondrial function in circulatory death donor hearts. Am J Physiol Heart Circ Physiol 2023; 324:H57-H66. [PMID: 36426883 PMCID: PMC9762969 DOI: 10.1152/ajpheart.00478.2022] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/18/2022] [Accepted: 11/18/2022] [Indexed: 11/27/2022]
Abstract
Donation after circulatory death (DCD) donor hearts are not routinely used for heart transplantation (HTx) because of ischemic damage, which is inherent to the DCD process. HTx outcomes are suboptimal in males who received female donor hearts. The exact mechanism for suboptimal outcomes from female donor hearts has not been defined. Differential susceptibility to ischemia tolerance, which would play a significant role in DCD donation, could be a reason but has not been studied. We studied the influence of sex on global myocardial ischemia tolerance and mitochondrial function. Sprague-Dawley rats of both sexes were assigned to DCD (n = 32) or control beating-heart donor (CBD, n = 28) groups. DCD hearts underwent 25 min of in vivo global myocardial ischemia and 90 min of ex vivo Krebs-Henseleit buffer perfusion at 37°C. CBD hearts were procured without ischemia. Infarct size was determined in hearts following 90 min of reperfusion, and in another set of hearts, mitochondrial function (oxidative-phosphorylation) was studied following 60 min of reperfusion. Infarct size was increased 3.3-fold in male and 3.1-fold in female DCD hearts compared with CBD hearts. However, infarct size (%) was comparable in female and male DCD hearts (male: 25.4 ± 3.7 vs. female 19.0 ± 3.3, P = NS). Oxidative phosphorylation was similarly decreased in male and female DCD hearts' mitochondria compared with CBD hearts' mitochondria. Thus, neither infarct size nor mitochondrial dysfunction was higher in female DCD hearts. These results suggest that the susceptibility to ischemia is not the reason for suboptimal HTx outcomes with female donor hearts.NEW & NOTEWORTHY The current study shows cardiac injury is not increased in female DCD hearts following global ischemia-reperfusion compared with male DCD hearts. In addition, mitochondrial dysfunction with DCD ischemia-reperfusion is comparable in both sexes. Sex-specific immune responses and hormone receptor modulation may contribute to suboptimal outcomes in male HTx recipients with female donor hearts.
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Affiliation(s)
- Qun Chen
- Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia
- Pauley Heart Center, Virginia Commonwealth University Health System, Richmond, Virginia
| | - Oluwatoyin Akande
- Division of Cardiothoracic Surgery, Virginia Commonwealth University, Richmond, Virginia
| | - Edward J Lesnefsky
- Division of Cardiology, Department of Internal Medicine, Virginia Commonwealth University, Richmond, Virginia
- Pauley Heart Center, Virginia Commonwealth University Health System, Richmond, Virginia
- Cardiology Section, Medical Service, McGuire Department of Veterans Affairs Medical Center, Richmond, Virginia
| | - Mohammed Quader
- Pauley Heart Center, Virginia Commonwealth University Health System, Richmond, Virginia
- Division of Cardiothoracic Surgery, Virginia Commonwealth University, Richmond, Virginia
- Cardiothoracic Surgery Section, Surgical Service, McGuire Department of Veterans Affairs Medical Center, Richmond, Virginia
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Adin DB, Hernandez JA. Influence of sex on renin-angiotensin-aldosterone system metabolites and enzymes in Doberman Pinschers. J Vet Intern Med 2022; 37:22-27. [PMID: 36412252 PMCID: PMC9889697 DOI: 10.1111/jvim.16589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Accepted: 11/11/2022] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Estrogen modulates the renin-angiotensin-aldosterone system (RAAS) in women, but sex differences have not been fully explored in dogs. OBJECTIVE We hypothesized that the RAAS profile of intact female (IF) Doberman Pinschers (DP) would differ from spayed female (SF) and intact male (IM) DP. ANIMALS Eighteen healthy DP (6 IF, 6 SF, 6 IM). METHODS Absolute and indexed RAAS metabolites, angiotensin-converting enzyme (ACE) and ACE2 activities, and genotypes (pyruvate kinase dehydrogenase 4, titin, and ACE variants) were compared among sex groups using Kruskal-Wallis or chi-square tests, and linear regression controlling for age. Data are expressed as median (minimum, maximum) and P < .05 was considered significant. RESULTS The ACE activity was higher in IF DP (656 pmol/L; 436, 784) compared to SF DP (411 pmol/L; 287, 451; P = .01) and IM DP (365 pmol/L; 276, 1200; P = .04) after controlling for age. Angiotensin II, angiotensin I, and plasma renin activity marker (PRA-S) were higher in IF DP compared to SF DP, but not significantly (P ≤ .25). After controlling for age, angiotensin 1-7/angiotensin I was lower in IF DP compared to SF DP (P = .01). Genotypes did not differ among groups. Most DP (94%) were ACE variant positive. CONCLUSIONS AND CLINICAL SIGNIFICANCE Sex and reproductive status influenced the RAAS of DP, with IF DP showing genotype-independent higher ACE activity. These findings hold implications for sterilization practices in female dogs, and support sex and reproductive status as a source of variability in RAAS studies. Additionally, the frequency of the ACE gene variant was very high in this group of DP.
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Affiliation(s)
- Darcy B. Adin
- Department of Small Animal Clinical SciencesUniversity of Florida, College of Veterinary MedicineGainesvilleFloridaUSA
| | - Jorge A. Hernandez
- Department of Small Animal Clinical SciencesUniversity of Florida, College of Veterinary MedicineGainesvilleFloridaUSA
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Chandra Shekar K, Yannopoulos D, Kosmopoulos M, Riess ML. Differential Effects of Reperfusion on Cardiac Mitochondrial Subpopulations in a Preclinical Porcine Model of Acute Myocardial Infarction. Front Cell Dev Biol 2022; 10:843733. [PMID: 35356287 PMCID: PMC8959812 DOI: 10.3389/fcell.2022.843733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 02/03/2022] [Indexed: 11/28/2022] Open
Abstract
Acute myocardial infarction (AMI) leads to localized cardiac ischemia and can be fatal if untreated. Despite being treatable, the threat of ischemia-reperfusion (IR) injury remains high. Mitochondria are central to both propagation and mitigation of IR injury, and cardiac mitochondria are categorized into two major subtypes-subsarcolemmal and interfibrillar mitochondria (SSM and IFM, respectively). We hypothesized that, in our pre-clinical porcine model of AMI, SSM and IFM are differentially affected by reperfusion. AMI was induced in female pigs by balloon occlusion of the left anterior descending artery for 45 min, followed by 4 h of reperfusion. At the end of reperfusion, animals were euthanized. Cardiac SSM and IFM from the affected ischemic area and a nearby non-ischemic area were isolated to compare mitochondrial function using substrates targeting mitochondrial electron transport chain complexes I and II. Despite detecting overall significant differences in mitochondrial function including yield, mitochondrial S3 and S4 respirations, and calcium retention, consistent individual functional differences in the two mitochondrial subpopulations were not observed, both between the two mitochondrial subtypes, as well as between the ischemic and non-ischemic tissue. Nonetheless, this study describes the mitochondrial subtype response within the initial few hours of reperfusion in a clinically relevant model of AMI, which provides valuable information needed to develop novel mitochondrially targeted therapies for AMI.
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Affiliation(s)
- Kadambari Chandra Shekar
- Integrative Biology and Physiology, University of Minnesota at Twin Cities, St. Paul, MN, United States
| | - Demetris Yannopoulos
- Department of Cardiology, Division of Medicine, University of Minnesota at Twin Cities, St. Paul, MN, United States
| | - Marinos Kosmopoulos
- Department of Cardiology, Division of Medicine, University of Minnesota at Twin Cities, St. Paul, MN, United States
| | - Matthias L. Riess
- Anesthesiology, TVHS VA Medical Center, Nashville, TN, United States
- Department of Anesthesiology, Vanderbilt University Medical Center, Nashville, TN, United States
- Department of Pharmacology, Vanderbilt University, Nashville, TN, United States
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11
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Ferreira C, Trindade F, Ferreira R, Neves JS, Leite-Moreira A, Amado F, Santos M, Nogueira-Ferreira R. Sexual dimorphism in cardiac remodeling: the molecular mechanisms ruled by sex hormones in the heart. J Mol Med (Berl) 2021; 100:245-267. [PMID: 34811581 DOI: 10.1007/s00109-021-02169-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 10/16/2021] [Accepted: 11/16/2021] [Indexed: 12/11/2022]
Abstract
Heart failure (HF) is growing in prevalence, due to an increase in aging and comorbidities. Heart failure with reduced ejection fraction (HFrEF) is more common in men, whereas heart failure with preserved ejection fraction (HFpEF) has a higher prevalence in women. However, the reasons for these epidemiological trends are not clear yet. Since HFpEF affects mostly postmenopausal women, sex hormones should play a pivotal role in HFpEF development. Furthermore, for HFpEF, contrary to HFrEF, effective therapeutic approaches are missing. Interestingly, studies evidenced that some therapies can have better results in women than in HFpEF men, emphasizing the necessity of understanding these observations at a molecular level. Thus, herein, we review the molecular mechanisms of estrogen and androgen actions in the heart in physiological conditions and explain how its dysregulation can lead to disease development. This clarification is essential in the road for an effective personalized management of HF, particularly HFpEF, towards the development of sex-specific therapeutic approaches.
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Affiliation(s)
- Cláudia Ferreira
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Fábio Trindade
- Department of Surgery and Physiology, Cardiovascular R&D Center (UnIC), Faculty of Medicine, University of Porto, Porto, Portugal
| | - Rita Ferreira
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - João Sérgio Neves
- Department of Surgery and Physiology, Cardiovascular R&D Center (UnIC), Faculty of Medicine, University of Porto, Porto, Portugal
- Department of Endocrinology, Diabetes and Metabolism, Centro Hospitalar Universitário São João, Porto, Portugal
| | - Adelino Leite-Moreira
- Department of Surgery and Physiology, Cardiovascular R&D Center (UnIC), Faculty of Medicine, University of Porto, Porto, Portugal
- Department of Cardiothoracic Surgery, Centro Hospitalar Universitário São João, Porto, Portugal
| | - Francisco Amado
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, Aveiro, Portugal
| | - Mário Santos
- Department of Cardiology, Hospital Santo António, Centro Hospitalar Universitário do Porto, Porto, Portugal
- UMIB - Unidade Multidisciplinar de Investigação Biomédica, ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Rita Nogueira-Ferreira
- Department of Surgery and Physiology, Cardiovascular R&D Center (UnIC), Faculty of Medicine, University of Porto, Porto, Portugal.
- UMIB - Unidade Multidisciplinar de Investigação Biomédica, ICBAS - Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal.
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12
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Dhaibar HA, Carroll NG, Amatya S, Kamberov L, Khanna P, Orr AW, Bailey SR, Oakley RH, Cidlowski JA, Cruz‐Topete D. Glucocorticoid Inhibition of Estrogen Regulation of the Serotonin Receptor 2B in Cardiomyocytes Exacerbates Cell Death in Hypoxia/Reoxygenation Injury. J Am Heart Assoc 2021; 10:e015868. [PMID: 34472367 PMCID: PMC8649237 DOI: 10.1161/jaha.120.015868] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Stress has emerged as an important risk factor for heart disease in women. Stress levels have been shown to correlate with delayed recovery and increased mortality after a myocardial infarction. Therefore, we sought to investigate if the observed sex-specific effects of stress in myocardial infarction may be partly attributed to genomic interactions between the female sex hormones, estrogen (E2), and the primary stress hormones glucocorticoids. Methods and Results Genomewide studies show that glucocorticoids inhibit estrogen-mediated regulation of genes with established roles in cardiomyocyte homeostasis. These include 5-HT2BR (cardiac serotonin receptor 2B), the expression of which is critical to prevent cardiomyocyte death in the adult heart. Using siRNA, gene expression, and chromatin immunoprecipitation assays, we found that 5-HT2BR is a primary target of the glucocorticoid receptor and the estrogen receptor α at the level of transcription. The glucocorticoid receptor blocks the recruitment of estrogen receptor α to the promoter of the 5-HT2BR gene, which may contribute to the adverse effects of stress in the heart of premenopausal women. Using immunoblotting, TUNEL (terminal deoxynucleotidal transferase-mediated biotin-deoxyuridine triphosphate nick-end labeling), and flow cytometry, we demonstrate that estrogen decreases cardiomyocyte death by a mechanism relying on 5-HT2BR expression. In vitro and in vivo experiments show that glucocorticoids inhibit estrogen cardioprotection in response to hypoxia/reoxygenation injury and exacerbate the size of the infarct areas in myocardial infarction. Conclusions These results established a novel mechanism underlying the deleterious effects of stress on female cardiac health in the setting of ischemia/reperfusion.
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Affiliation(s)
- Hemangini A. Dhaibar
- Department of Molecular and Cellular PhysiologyLouisiana State University Health Sciences CenterShreveportLA,Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA
| | - Natalie G. Carroll
- Department of Molecular and Cellular PhysiologyLouisiana State University Health Sciences CenterShreveportLA,Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA
| | - Shripa Amatya
- Department of Molecular and Cellular PhysiologyLouisiana State University Health Sciences CenterShreveportLA,Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA
| | - Lilly Kamberov
- Department of Molecular and Cellular PhysiologyLouisiana State University Health Sciences CenterShreveportLA,Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA
| | - Pranshu Khanna
- Department of Molecular and Cellular PhysiologyLouisiana State University Health Sciences CenterShreveportLA,Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA
| | - A. Wayne Orr
- Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA,Department of PathologyLouisiana State University Health Sciences CenterShreveportLA
| | - Steven R. Bailey
- Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA,Department of Internal MedicineLouisiana State University Health Sciences CenterShreveportLA
| | - Robert H. Oakley
- Department of Health and Human ServicesSignal Transduction LaboratoryNational Institute of Environmental Health SciencesNational Institutes of HealthResearch Triangle ParkNC
| | - John A. Cidlowski
- Department of Health and Human ServicesSignal Transduction LaboratoryNational Institute of Environmental Health SciencesNational Institutes of HealthResearch Triangle ParkNC
| | - Diana Cruz‐Topete
- Department of Molecular and Cellular PhysiologyLouisiana State University Health Sciences CenterShreveportLA,Center for Cardiovascular Diseases and SciencesLouisiana State University Health Sciences CenterShreveportLA
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13
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(Sex differences in cardiac tolerance to ischemia-reperfusion injury - the role of mitochondria). COR ET VASA 2021. [DOI: 10.33678/cor.2021.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Wu M, Rowe JM, Fleming SD. Complement Initiation Varies by Sex in Intestinal Ischemia Reperfusion Injury. Front Immunol 2021; 12:649882. [PMID: 33868287 PMCID: PMC8047102 DOI: 10.3389/fimmu.2021.649882] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/08/2021] [Indexed: 01/03/2023] Open
Abstract
Intestinal ischemia reperfusion (IR)-induced tissue injury represents an acute inflammatory response with significant morbidity and mortality. The mechanism of IR-induced injury is not fully elucidated, but recent studies suggest a critical role for complement activation and for differences between sexes. To test the hypothesis that complement initiation differs by sex in intestinal IR, we performed intestinal IR on male and female WT C57B6L/, C1q-/-, MBL-/-, or properdin (P)-/- mice. Intestinal injury, C3b and C5a production and ex vivo secretions were analyzed. Initial studies demonstrated a difference in complement mRNA and protein in male and female WT mice. In response to IR, male C1q-, MBL- and P-deficient mice sustained less injury than male WT mice. In contrast, only female MBL-/- mice sustained significantly less injury than female wildtype mice. Importantly, wildtype, C1q-/- and P-/- female mice sustained significant less injury than the corresponding male mice. In addition, both C1q and MBL expression and deposition increased in WT male mice, while only elevated MBL expression and deposition occurred in WT female mice. These data suggested that males use both C1q and MBL pathways, while females tend to depend on lectin pathway during intestinal IR. Females produced significantly less serum C5a in MBL-/- and P-/- mice. Our findings suggested that complement activation plays a critical role in intestinal IR in a sex-dependent manner.
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Affiliation(s)
- Miaomiao Wu
- Animal Nutritional Genome and Germplasm Innovation Research Center, College of Animal Science and Technology, Hunan Agricultural University, Changsha, China
- Division of Biology, Kansas State University, Manhattan, KS, United States
| | - Jennifer M. Rowe
- Division of Biology, Kansas State University, Manhattan, KS, United States
| | - Sherry D. Fleming
- Division of Biology, Kansas State University, Manhattan, KS, United States
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15
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Zhou Z, Liu Z, Gao X, Long Q. Mitochondrial respiration in C57BL/6 substrains varies in response to myocardial infarction. J Bioenerg Biomembr 2021; 53:119-127. [PMID: 33630237 DOI: 10.1007/s10863-021-09884-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 02/18/2021] [Indexed: 10/22/2022]
Abstract
The C57BL/6 mouse strain have been commonly used for the genetic background animal models and experimental research. There are several major sources of C57BL/6 substrains for the biomedical research community which display genetic and phenotypic differences. Previous studies have suggested that the varies in baseline of cardiovascular phenotypes as well as in response to pressure overload by transverse aortic constriction (TAC). To investigate whether there exist substrain specific differences in response to heart failure post myocardial infarction (MI), consequently the impaired mitochondrial respiration, we performed MI surgery on two commonly used C57BL/6 substrains: C57BL/6J (BL/6J) and C57BL/6NCrl (BL/6N) mice. Subsequently, measurements about cardiac function, histology and mitochondrial respiration capacities were conducted to evaluate the differences. The data showed that C57BL/6J(BL/6J) mice is more resistant to the attack of MI, evidenced by lower mortality, less infarct size and better preserved cardiac function after MI, especially exhibited better mitochondrial respiration capacities, compared with the C57BL/6NCrl(BL/6N) mice.
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Affiliation(s)
- Zhou Zhou
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Zhiheng Liu
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Xu Gao
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China
| | - Qinqiang Long
- Division of Cardiology, Department of Internal Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, 1095 Jiefang Ave, Wuhan, 430030, China.
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16
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Koblihová E, Mrázová I, Vaňourková Z, Maxová H, Ryska M, Froněk J. Sex-linked differences in the course of thioacetamide-induced acute liver failure in Lewis rats. Physiol Res 2020; 69:835-845. [PMID: 32901492 DOI: 10.33549/physiolres.934499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Acute liver failure (ALF) is a clinical syndrome with high mortality rate, resulting from widespread hepatocyte damage. Its pathophysiological background is still poorly understood and preclinical studies evaluating pathophysiology and new potential therapeutic measures are needed. The model of ALF induced by administration of thioacetamide (TAA) in Lewis rats is recommended as optimal; however, the limitation of previous studies was that they were performed predominantly in male rats. In view of the growing recognition that sex as a biological variable should be taken into consideration in preclinical research, we examined its role in the development of TAA-induced ALF in Lewis rats. We found that, first, intact male Lewis rats showed lower survival rate than their female counterparts, due to augmented liver injury documented by higher plasma ammonia, and bilirubin levels and alanine aminotransferase activity. Second, in female rats castration did not alter the course of TAA-induced ALF whereas in the male gonadectomy improved the survival rate and attenuated liver injury, reducing it to levels observed in their female counterparts. In conclusion, we found that Lewis rats show a remarkable sexual dimorphism with respect to TAA-induced ALF, and male rats display dramatically poorer prognosis as compared with the females. We showed that testosterone is responsible for the deterioration of the course of TAA-induced ALF in male rats. In most general terms, our findings indicate that in the preclinical studies of the pathophysiology and treatment of ALF (at least of the TAA-induced form) the sex-linked differences should be seriously considered.
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Affiliation(s)
- E Koblihová
- Department of Surgery, Second Faculty of Medicine, Charles University and Central Military Hospital, Prague, Czech Republic.
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17
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The mKATP Channels and protein-kinase C Are Involved in the Cardioprotective Effects of Genistein on Estrogen-Deficient Rat Hearts Exposed to Ischemia/Reperfusion: Energetic Study. J Cardiovasc Pharmacol 2020; 75:460-474. [PMID: 32195757 DOI: 10.1097/fjc.0000000000000816] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Estrogenic deficiency is considered a risk of coronary disease in women. The phytoestrogen genistein could be a safe preventive strategy. The first aim of this work was to validate a model of cardiac stunning in which natural estrogenic deficiency rats, ie, adult young male (YM) and aged female (AgF), are compared with young female rats (YF). The second aim was to study whether the in vivo administration of genistein prevents the stunning in estrogenic deficiency rats. The third aim was to evaluate whether in our estrogenic deficiency model exists a synergy between genistein and estradiol. The fourth aim was to characterize the underlying mechanisms of genistein. Stunning was induced by ischemia/reperfusion (I/R) in isolated hearts inside a calorimeter. The left ventricular pressure (P) and total heat rate (Ht) were simultaneously measured, while diastolic contracture and muscle economy (P/Ht) were calculated. During R, P/Ht and P recovered less in AgF and YM than in YF rat hearts. Genistein through i.p. (GST-ip) improved P and P/Ht in AgF and YM, but not in YF. In YM, the cardioprotections of GST-ip and estradiol were synergistic. After ischemia, GST-ip increased SR Ca leak causing diastolic contracture. The GST-ip cardioprotection neither was affected by blockade of PI3K-Akt, NO synthases, or phosphatases, but it was sensitive to blockade of protein-kinase C and mKATP channels. Results suggest that (1) estrogenic deficiency worsens cardiac stunning, (2) GST-ip was more cardioprotective in estrogenic deficiency and synergistic with estradiol, and (3) cardioprotection of GST-ip depends on the protein-kinase C and mKATP channel pathway activation.
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18
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Eicosanoid production varies by sex in mesenteric ischemia reperfusion injury. Clin Immunol 2020; 220:108596. [PMID: 32961332 DOI: 10.1016/j.clim.2020.108596] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 09/13/2020] [Accepted: 09/16/2020] [Indexed: 01/18/2023]
Abstract
Intestinal ischemia/reperfusion (I/R)-induced injury is an inflammatory response with significant morbidity and mortality. The early inflammatory response includes neutrophil infiltration. However, the majority of rodent studies utilize male mice despite a sexual dimorphism in intestinal I/R-related diseases. We hypothesized that sex may alter inflammation by changing neutrophil infiltration and eicosanoid production. To test this hypothesis, male and female C57Bl/6 mice were subjected to sham treatment or 30 min intestinal ischemia followed by a time course of reperfusion. We demonstrate that compared to male mice, females sustain significantly less intestinal I/R-induced tissue damage and produced significant LTB4 concentrations. Male mice release PGE2. Finally, treatment with a COX-2 specific inhibitor, NS-398, attenuated I/R-induced injury, total peroxidase level, and PGE2 production in males, but not in similarly treated female mice. Thus, I/R-induced eicosanoid production and neutrophil infiltration varies between sexes suggesting that distinct therapeutic intervention may be needed in clinical ischemic diseases.
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19
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Ostadal B, Ostadalova I, Szarszoi O, Netuka I, Olejnickova V, Hlavackova M. Sex-dependent effect of perinatal hypoxia on cardiac tolerance to oxygen deprivation in adults. Can J Physiol Pharmacol 2020; 99:1-8. [PMID: 32687731 DOI: 10.1139/cjpp-2020-0310] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Epidemiological studies have demonstrated a relationship between the adverse influence of perinatal development and increased risk of ischemic heart disease in adults. From negative factors to which the fetus is subjected, the most important is hypoxia. The fetus may experience hypoxic stress under different conditions, including pregnancy at high altitude, pregnancy with anemia, placental insufficiency, and heart, lung, and kidney disease. One of the most common insults during the early stages of postnatal development is hypoxemia due to congenital cyanotic heart defects. Experimental studies have demonstrated a link between early hypoxia and increased risk of ischemia/reperfusion injury (I/R) in adults. Furthermore, it has been observed that late myocardial effects of chronic hypoxia, experienced in early life, may be sex-dependent. Unlike in males, perinatal hypoxia significantly increased cardiac tolerance to acute I/R injury in adult females, expressed as decreased infarct size and lower incidence of ischemic arrhythmias. It was suggested that early hypoxia may result in sex-dependent programming of specific genes in the offspring with the consequence of increased cardiac susceptibility to I/R injury in adult males. These results would have important clinical implications, since cardiac sensitivity to oxygen deprivation in adult patients may be significantly influenced by perinatal hypoxia in a sex-dependent manner.
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Affiliation(s)
- B Ostadal
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
| | - I Ostadalova
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
| | - O Szarszoi
- Department of Cardiovascular Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - I Netuka
- Department of Cardiovascular Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - V Olejnickova
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic.,Institute of Anatomy, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - M Hlavackova
- Institute of Physiology, Czech Academy of Sciences, Prague, Czech Republic
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20
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Kala P, Červenka L, Škaroupková P, Táborský M, Kompanowska-Jezierska E, Sadowski J. Sex-linked differences in the mortality in Ren-2 transgenic hypertensive rats with aorto-caval fistula: effects of treatment with angiotensin converting enzyme alone and combined with inhibitor of soluble epoxide hydrolase. Physiol Res 2019; 68:589-601. [DOI: 10.33549/physiolres.934094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
We found recently that in Ren-2 transgenic hypertensive rats (TGR) addition of soluble epoxide hydrolase inhibitor (sEHi) to treatment with angiotensin-converting enzyme inhibitor (ACEi), surprisingly, increased the mortality due to heart failure (HF) induced by creation of the aorto-caval fistula (ACF). Since TGR exhibit sex-related differences in mortality, we examined here if such differentiation exists also in the response to the treatment with ACEi (trandolapril), alone or combined with sEHi [cis-4-[4-(3-adamantan-1-yl-ureido)cyclohexyloxy]benzoic acid, (c-AUCB)]. ACEi improved survival in males to 74 % (vs. 0 %) and in females to 65 % (vs. 32 %). ACEi and sEHi combined also improved the survival in male ACF TGR, however, it was significantly less (38 %) than after ACEi alone. In contrast, in females the combined treatment significantly improved the final survival rate (84 %). There were no significant sex-linked differences in survival rate in untreated or treated normotensive Hannover Sprague-Dawley rats. In conclusion, in HF patients with co-existing hypertension and RAS hyperactivity, the sex may co-determine the rate of HF progression, and can influence the effectiveness of the therapeutic measures applied. Therefore, in the relevant pre-clinical studies the sex-linked differences should be seriously considered. Our data indicate that TGR might be an optimal model for such studies.
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Affiliation(s)
| | - L. Červenka
- Center for Experimental Medicine, Institute for Clinical and Experimental Medicine, 1958/9 Vídeňská, Prague, Czech Republic.
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21
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Inserte J, Aluja D, Barba I, Ruiz-Meana M, Miró E, Poncelas M, Vilardosa Ú, Castellano J, Garcia-Dorado D. High-fat diet improves tolerance to myocardial ischemia by delaying normalization of intracellular PH at reperfusion. J Mol Cell Cardiol 2019; 133:164-173. [DOI: 10.1016/j.yjmcc.2019.06.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/15/2019] [Accepted: 06/01/2019] [Indexed: 01/22/2023]
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22
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Thompson LP, Song H, Polster BM. Fetal Programming and Sexual Dimorphism of Mitochondrial Protein Expression and Activity of Hearts of Prenatally Hypoxic Guinea Pig Offspring. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7210249. [PMID: 31249648 PMCID: PMC6589217 DOI: 10.1155/2019/7210249] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/12/2019] [Accepted: 05/20/2019] [Indexed: 12/15/2022]
Abstract
Chronic intrauterine hypoxia is a programming stimulus of cardiovascular dysfunction. While the fetal heart adapts to the reduced oxygenation, the offspring heart becomes vulnerable to subsequent metabolic challenges as an adult. Cardiac mitochondria are key organelles responsible for an efficient energy supply but are subject to damage under hypoxic conditions. We propose that intrauterine hypoxia alters mitochondrial function as an underlying programming mechanism of contractile dysfunction in the offspring. Indices of mitochondrial function such as mitochondrial DNA content, Complex (C) I-V expression, and CI/CIV enzyme activity were measured in hearts of male and female offspring at 90 days old exposed to prenatal hypoxia (10.5% O2) for 14 d prior to term (65 d). Both left ventricular tissue and cardiomyocytes exhibited decreased mitochondrial DNA content, expression of CIV, and CI/CIV activity in male hearts. In female cardiomyocytes, hypoxia had no effect on protein expression of CI-CV nor on CI/CIV activity. This study suggests that chronic intrauterine hypoxia alters the intrinsic properties of select respiratory complexes as a programming mechanism of cardiac dysfunction in the offspring. Sex differences in mitochondrial function may underlie the increased vulnerability of age-matched males compared to females in cardiovascular disease and heart failure.
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Affiliation(s)
- Loren P. Thompson
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland, Baltimore, School of Medicine, 655 W. Baltimore St., Baltimore, MD 21201, USA
| | - Hong Song
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of Maryland, Baltimore, School of Medicine, 655 W. Baltimore St., Baltimore, MD 21201, USA
| | - Brian M. Polster
- Department of Anesthesiology and Center for Shock, Trauma and Anesthesiology Research, University of Maryland, Baltimore, School of Medicine, 655 W. Baltimore St., Baltimore, MD 21201, USA
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23
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Noroozzadeh M, Raoufy MR, Bidhendi Yarandi R, Faraji Shahrivar F, Ramezani Tehrani F. The effects of prenatal androgen exposure on cardiac function and tolerance to ischemia/reperfusion injury in male and female rats during adulthood. Life Sci 2019; 229:251-260. [PMID: 31112711 DOI: 10.1016/j.lfs.2019.05.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 05/09/2019] [Accepted: 05/16/2019] [Indexed: 10/26/2022]
Abstract
AIMS Cardiovascular diseases may originate from suboptimal intrauterine environments. We aimed to examine the effects of prenatal androgen exposure (PAE) on heart basal hemodynamic parameters and tolerance to ischemia/reperfusion (I/R) injury, in PAE adult females and males. MAIN METHODS Pregnant Wistar rats in the experimental group (n = 8) received 5 mg of testosterone (s.c. injection) on the 20th day of pregnancy, while controls received solvent. The hearts of adult female and male offspring were isolated and perfused in a Langendorff apparatus, values of left ventricular systolic pressure(LVSP), left ventricular developed pressure(LVDP), rate pressure product(RPP) and peak rates of positive and negative changes in left ventricular pressure(±dp/dt) were recorded using a power lab system. KEY FINDINGS At baseline, PAE adult males demonstrated significant higher values of LVSP, LVDP, RPP and ± dp/dt, compared to controls and PAE adult females (p < 0.05), while PAE adult females showed no significant differences compared to controls. In PAE adult males, LVSP, LVDP, RPP and ± dp/dt had significant decreasing trends per phases after I/R, compared to their controls and PAE females, while these decreasing trends were not statistically significant in PAE adult female rats vs. their controls. SIGNIFICANCE The impact of prenatal androgen exposure on adulthood cardiac function and tolerance to I/R is gender dependent, which may be partly explained by different cardiac effects of hyperandrogenism in males versus females. After prenatal androgen exposure, the baseline hemodynamic parameters of the hearts of adult males are increased; although they had less tolerance to I/R, findings however not observed in females.
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Affiliation(s)
- Mahsa Noroozzadeh
- Reproductive Endocrinology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Reza Raoufy
- Department of Physiology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Razieh Bidhendi Yarandi
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Farzaneh Faraji Shahrivar
- Department of Medical laboratory Sciences, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Fahimeh Ramezani Tehrani
- Reproductive Endocrinology Research Center, Research Institute for Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
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The potential protective effects of erythropoietin and estrogen on renal ischemia reperfusion injury in ovariectomized rats. ALEXANDRIA JOURNAL OF MEDICINE 2019. [DOI: 10.1016/j.ajme.2015.12.001] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
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25
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Maldonado O, Ramos A, Guapillo M, Rivera J, Palma I, Rubio-Gayosso I, Ramirez-Sanchez I, Najera N, Ceballos G, Mendez-Bolaina E. Effects of chronic inhibition of Testosterone metabolism on cardiac remodeling after ischemia/reperfusion-induced myocardial damage in gonadectomized rats. Biol Open 2019; 8:bio.041905. [PMID: 31085546 PMCID: PMC6550079 DOI: 10.1242/bio.041905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
The effects of testosterone on cardiovascular homeostasis are still not well understood. The objective of this work was to evaluate the effects of testosterone in the absence or presence of inhibition of Aromatase (4-hydroxyandrostenedione) and/or 5α reductase (Finasteride) enzymatic activities on the myocardial remodeling 30 days after ischemia/reperfusion (I/R) injury in gonadectomized rats. Results showed that testosterone administration to ORX rats resulted in decreased myocardial damaged area, inflammatory infiltrates and reduced MMP-3 and 13 expressions. Interestingly, Finasteride administration resulted in a greater decrease in scar tissue, inflammatory infiltrates, along with a significant decrease in MMP-3 and 13 expressions. In contrast, 4-hydroxyandrostenedione administrations increased all parameters. Our results suggest that testosterone does not have a direct effect since simultaneous inhibition of aromatase and 5α-reductase did not induce significant changes in I/R induced myocardial injury. Summary: Coronary ischemia/reperfusion-induced injury in gonadectomyzed male rats is decreased by testosterone, protection is increased by blocking its 5α-reduction and blocked by inhibition of its aromatization.
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Affiliation(s)
- Octavio Maldonado
- CIB-Doctorado en Ciencias Biomédicas-UV. Centro de Investigaciones Biomédicas, Universidad Veracruzana, Av. Dr. Luis Castelazo Ayala s/n, Colonia Industrial Anima, CP. 91000, Xalapa, Veracruz, Mexico.,Departamento de Nanotecnología, Universidad Tecnológica del Centro de Veracruz, Av. Universidad No. 350, Carretera Federal Cuitláhuac - La Tinaja, Localidad Dos Caminos, CP. 94910, Cuitláhuac, Veracruz, Mexico
| | - Angel Ramos
- MCPB-Facultad de Ciencias Químicas, Universidad Veracruzana, Prolongación Oriente 6, No. 1009, Colonia Rafael Alvarado, CP. 94340, Orizaba, Veracruz, Mexico
| | - Mario Guapillo
- Laboratorio de Biología Molecular, Facultad de Ciencias Químicas, Universidad Veracruzana, Prolongación Oriente 6, No. 1009, Colonia Rafael Alvarado, CP. 94340, Orizaba, Veracruz, Mexico
| | - Jose Rivera
- MCPB-Facultad de Ciencias Químicas, Universidad Veracruzana, Prolongación Oriente 6, No. 1009, Colonia Rafael Alvarado, CP. 94340, Orizaba, Veracruz, Mexico
| | - Icela Palma
- Seccion de Estudios de posgrado, Escuela Superior de Medicina, Instituto Politecnico Nacional, Plan de San Luis y Díaz Mirón, CP. 11340, Ciudad de México, Mexico
| | - Ivan Rubio-Gayosso
- Seccion de Estudios de posgrado, Escuela Superior de Medicina, Instituto Politecnico Nacional, Plan de San Luis y Díaz Mirón, CP. 11340, Ciudad de México, Mexico
| | - Israel Ramirez-Sanchez
- Seccion de Estudios de posgrado, Escuela Superior de Medicina, Instituto Politecnico Nacional, Plan de San Luis y Díaz Mirón, CP. 11340, Ciudad de México, Mexico
| | - Nayelli Najera
- Seccion de Estudios de posgrado, Escuela Superior de Medicina, Instituto Politecnico Nacional, Plan de San Luis y Díaz Mirón, CP. 11340, Ciudad de México, Mexico
| | - Guillermo Ceballos
- Seccion de Estudios de posgrado, Escuela Superior de Medicina, Instituto Politecnico Nacional, Plan de San Luis y Díaz Mirón, CP. 11340, Ciudad de México, Mexico
| | - Enrique Mendez-Bolaina
- CIB-Doctorado en Ciencias Biomédicas-UV. Centro de Investigaciones Biomédicas, Universidad Veracruzana, Av. Dr. Luis Castelazo Ayala s/n, Colonia Industrial Anima, CP. 91000, Xalapa, Veracruz, Mexico.,MCPB-Facultad de Ciencias Químicas, Universidad Veracruzana, Prolongación Oriente 6, No. 1009, Colonia Rafael Alvarado, CP. 94340, Orizaba, Veracruz, Mexico
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26
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Lv J, Ma Q, Dasgupta C, Xu Z, Zhang L. Antenatal Hypoxia and Programming of Glucocorticoid Receptor Expression in the Adult Rat Heart. Front Physiol 2019; 10:323. [PMID: 31001129 PMCID: PMC6454194 DOI: 10.3389/fphys.2019.00323] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 03/11/2019] [Indexed: 12/26/2022] Open
Abstract
Glucocorticoid receptor (GR) signaling is critical for development and function of the heart. Our previous study demonstrated that gestational hypoxia induced epigenetic repression of the GR gene in the developing heart. The present study aims to determine that the alterations of promoter methylation level and epigenetic repression of the GR gene in the developing heart in response to maternal hypoxia is sustained in adult offspring and potential gender differences in the programming of GR gene. Pregnant rats were treated with 10.5% O2 from gestational day 15 (E15) to 21 (E21). Hearts were isolated from 5-month-old male and female offspring with the developing stage being equivalent to 18-year-old human. GR mRNA and protein abundance was determined with real time qRT-PCR and Western blot. GR gene promoter methylation and binding of transcription factors were measured with methylated DNA immunoprecipitation (MeDIP) and Chromatin immunoprecipitation (ChIP). The results showed that antenatal hypoxia significantly decreased the expression of GR mRNA and protein in the hearts of adult male offspring, but not in females, which is ascribed to the differential changes of alternative exon1 mRNA variants of GR gene in male and female hearts in response to prenatal hypoxia. In addition, the downregulation of GR expression in the male heart was correlated with increased methylation levels of CpG dinucleotides in promoters of exon 14, 15, 16, 17, and 110, which resulted in a decrease in the binding of their transcription factors. Thus, the study reveals that antenatal hypoxia results in a reprogramming and long-term change in GR gene expression in the heart by hypermethylation of GR promoter in a sex-differential pattern, which provides a novel mechanism regarding the increased vulnerability of heart later in life with exposure of prenatal hypoxia.
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Affiliation(s)
- Juanxiu Lv
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Qingyi Ma
- Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Chiranjib Dasgupta
- Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Zhice Xu
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, United States
| | - Lubo Zhang
- Institute for Fetology, The First Affiliated Hospital of Soochow University, Suzhou, China.,Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, Loma Linda, CA, United States
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Ostadal B, Drahota Z, Houstek J, Milerova M, Ostadalova I, Hlavackova M, Kolar F. Developmental and sex differences in cardiac tolerance to ischemia-reperfusion injury: the role of mitochondria 1. Can J Physiol Pharmacol 2019; 97:808-814. [PMID: 30893574 DOI: 10.1139/cjpp-2019-0060] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Age and sex play an essential role in the cardiac tolerance to ischemia-reperfusion injury: cardiac resistance significantly decreases during postnatal maturation and the female heart is more tolerant than the male myocardium. It is widely accepted that mitochondrial dysfunction, and particularly mitochondrial permeability transition pore (MPTP) opening, plays a major role in determining the extent of cardiac ischemia-reperfusion injury. We have observed that the MPTP sensitivity to the calcium load differs in mitochondria isolated from neonatal and adult myocardium, as well as from adult male and female hearts. Neonatal and female mitochondria are more resistant both in the extent and in the rate of mitochondrial swelling induced by high calcium concentration. Our data further suggest that age- and sex-dependent specificity of the MPTP is not the result of different amounts of ATP synthase and cyclophilin D: neonatal and adult hearts, similarly as the male and female hearts, contain comparable amounts of MPTP and its regulatory protein cyclophilin D. We can speculate that the lower sensitivity of MPTP to the calcium-induced swelling may be related to the higher ischemic tolerance of both neonatal and female myocardium.
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Affiliation(s)
- B Ostadal
- Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic.,Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic
| | - Z Drahota
- Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic.,Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic
| | - J Houstek
- Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic.,Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic
| | - M Milerova
- Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic.,Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic
| | - I Ostadalova
- Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic.,Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic
| | - M Hlavackova
- Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic.,Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic
| | - F Kolar
- Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic.,Institute of Physiology, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4 Czech Republic
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Cardiac-specific deletion of GCN5L1 restricts recovery from ischemia-reperfusion injury. J Mol Cell Cardiol 2019; 129:69-78. [PMID: 30776374 DOI: 10.1016/j.yjmcc.2019.02.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 01/31/2019] [Accepted: 02/14/2019] [Indexed: 11/22/2022]
Abstract
GCN5L1 regulates mitochondrial protein acetylation, cellular bioenergetics, reactive oxygen species (ROS) generation, and organelle positioning in a number of diverse cell types. However, the functional role of GCN5L1 in the heart is currently unknown. As many of the factors regulated by GCN5L1 play a major role in ischemia-reperfusion (I/R) injury, we sought to determine if GCN5L1 is an important nexus in the response to cardiac ischemic stress. Deletion of GCN5L1 in cardiomyocytes resulted in impaired myocardial post-ischemic function and increased infarct development in isolated work-performing hearts. GCN5L1 knockout hearts displayed hallmarks of ROS damage, and scavenging of ROS restored cardiac function and reduced infarct volume in vivo. GCN5L1 knockdown in cardiac-derived AC16 cells was associated with reduced activation of the pro-survival MAP kinase ERK1/2, which was also reversed by ROS scavenging, leading to restored cell viability. We therefore conclude that GCN5L1 activity provides an important protection against I/R induced, ROS-mediated damage in the ischemic heart.
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29
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Romiti GF, Cangemi R, Toriello F, Ruscio E, Sciomer S, Moscucci F, Vincenti M, Crescioli C, Proietti M, Basili S, Raparelli V. Sex-Specific Cut-Offs for High-Sensitivity Cardiac Troponin: Is Less More? Cardiovasc Ther 2019; 2019:9546931. [PMID: 31772621 PMCID: PMC6739766 DOI: 10.1155/2019/9546931] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2018] [Revised: 01/08/2019] [Accepted: 01/16/2019] [Indexed: 12/25/2022] Open
Abstract
Management of patients presenting to the Emergency Department with chest pain is continuously evolving. In the setting of acute coronary syndrome, the availability of high-sensitivity cardiac troponin assays (hs-cTn) has allowed for the development of algorithms aimed at rapidly assessing the risk of an ongoing myocardial infarction. However, concerns were raised about the massive application of such a simplified approach to heterogeneous real-world populations. As a result, there is a potential risk of underdiagnosis in several clusters of patients, including women, for whom a lower threshold for hs-cTn was suggested to be more appropriate. Implementation in clinical practice of sex-tailored cut-off values for hs-cTn represents a hot topic due to the need to reduce inequality and improve diagnostic performance in females. The aim of this review is to summarize current evidence on sex-specific cut-off values of hs-cTn and their application and usefulness in clinical practice. We also offer an extensive overview of thresholds reported in literature and of the mechanisms underlying such differences among sexes, suggesting possible explanations about debated issues.
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Affiliation(s)
- Giulio Francesco Romiti
- Department of Internal Medicine and Medical Specialties, Sapienza–University of Rome, Rome, Italy
| | - Roberto Cangemi
- Department of Internal Medicine and Medical Specialties, Sapienza–University of Rome, Rome, Italy
| | - Filippo Toriello
- Division of Cardiology, San Paolo Hospital, Department of Health Sciences, University of Milan, Milan, Italy
| | - Eleonora Ruscio
- Department of Cardiovascular and Thoracic Sciences, Catholic University of the Sacred Heart, Rome, Italy
| | - Susanna Sciomer
- Department of Cardiovascular, Respiratory, Nephrology, Anesthesiology and Geriatric Sciences, Sapienza–University of Rome, Rome, Italy
| | - Federica Moscucci
- Department of Cardiovascular, Respiratory, Nephrology, Anesthesiology and Geriatric Sciences, Sapienza–University of Rome, Rome, Italy
| | - Marianna Vincenti
- Department of Internal Medicine and Medical Specialties, Sapienza–University of Rome, Rome, Italy
| | - Clara Crescioli
- Department of Movement, Human and Health Sciences, University of Rome “Foro Italico”, Rome, Italy
| | - Marco Proietti
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Stefania Basili
- Department of Internal Medicine and Medical Specialties, Sapienza–University of Rome, Rome, Italy
| | - Valeria Raparelli
- Department of Experimental Medicine, Sapienza–University of Rome, Rome, Italy
- Center for Outcomes Research and Evaluation, Research Institute, McGill University Health Centre, Montreal, Quebec, Canada
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30
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Xing L, Zhang H, Qi R, Tsao R, Mine Y. Recent Advances in the Understanding of the Health Benefits and Molecular Mechanisms Associated with Green Tea Polyphenols. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:1029-1043. [PMID: 30653316 DOI: 10.1021/acs.jafc.8b06146] [Citation(s) in RCA: 275] [Impact Index Per Article: 55.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Tea, leaf, or bud from the plant Camellia sinensis, make up some of the beverages popularly consumed in different parts of the world as green tea, oolong tea, or black tea. More particularly, as a nonfermented tea, green tea has gained more renown because of the significant health benefits assigned to its rich content in polyphenols. As a main constituent, green tea polyphenols were documented for their antioxidant, anti-inflammation, anticancer, anticardiovascular, antimicrobial, antihyperglycemic, and antiobesity properties. Recent reports demonstrate that green tea may exert a positive effect on the reduction of medical chronic conditions such as cardiovascular disease, cancer, Alzheimer's disease, Parkinson's disease, and diabetes. The health benefits of green teas, in particular EGCG, are widely investigated, and these effects are known to be primarily associated with the structure and compositions of its polyphenols. This Review focuses on the diverse constituents of green tea polyphenols and their molecular mechanisms from the perspective of their potential therapeutic function. Recent advances of green tea polyphenols on their bioavailability, bioaccessibility, and microbiota were also summarized in this article. Dietary supplementation with green tea represents an attractive alternative toward promoting human health.
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Affiliation(s)
- Lujuan Xing
- Department of Food Science , University of Guelph , Guelph , Ontario N1G 2W1 , Canada
- Key Lab of Meat Processing and Quality Control, College of Food Science and Technology , Nanjing Agricultural University , Nanjing , Jiangsu 210095 , China
| | - Hua Zhang
- Guelph Food Research Centre, Agriculture and Agri-Food Canada , 93 Stone Road West , Guelph , Ontario N1G 5C9 , Canada
| | - Ruili Qi
- Department of Food Science , University of Guelph , Guelph , Ontario N1G 2W1 , Canada
| | - Rong Tsao
- Guelph Food Research Centre, Agriculture and Agri-Food Canada , 93 Stone Road West , Guelph , Ontario N1G 5C9 , Canada
| | - Yoshinori Mine
- Department of Food Science , University of Guelph , Guelph , Ontario N1G 2W1 , Canada
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31
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Badimon L, Mendieta G, Ben-Aicha S, Vilahur G. Post-Genomic Methodologies and Preclinical Animal Models: Chances for the Translation of Cardioprotection to the Clinic. Int J Mol Sci 2019; 20:ijms20030514. [PMID: 30691061 PMCID: PMC6387468 DOI: 10.3390/ijms20030514] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 01/23/2019] [Indexed: 12/02/2022] Open
Abstract
Although many cardioprotective strategies have demonstrated benefits in animal models of myocardial infarction, they have failed to demonstrate cardioprotection in the clinical setting highlighting that new therapeutic target and treatment strategies aimed at reducing infarct size are urgently needed. Completion of the Human Genome Project in 2001 fostered the post-genomic research era with the consequent development of high-throughput “omics” platforms including transcriptomics, proteomics, and metabolomics. Implementation of these holistic approaches within the field of cardioprotection has enlarged our understanding of ischemia/reperfusion injury with each approach capturing a different angle of the global picture of the disease. It has also contributed to identify potential prognostic/diagnostic biomarkers and discover novel molecular therapeutic targets. In this latter regard, “omic” data analysis in the setting of ischemic conditioning has allowed depicting potential therapeutic candidates, including non-coding RNAs and molecular chaperones, amenable to pharmacological development. Such discoveries must be tested and validated in a relevant and reliable myocardial infarction animal model before moving towards the clinical setting. Moreover, efforts should also focus on integrating all “omic” datasets rather than working exclusively on a single “omic” approach. In the following manuscript, we will discuss the power of implementing “omic” approaches in preclinical animal models to identify novel molecular targets for cardioprotection of interest for drug development.
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Affiliation(s)
- Lina Badimon
- Cardiovascular Program- ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain. (L.B.).
- Centro de Investigación Biomédica en Red Cardiovascular (CIBERCV) Instituto de Salud Carlos III, 28029 Madrid, Spain..
- Cardiovascular Research Chair, Universidad Autónoma Barcelona (UAB) 08025 Barcelona, Spain.
| | - Guiomar Mendieta
- Cardiovascular Program- ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain. (L.B.).
- Department of Cardiology, Hospital Clinic, 08036 Brcelona, Spain.
| | - Soumaya Ben-Aicha
- Cardiovascular Program- ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain. (L.B.).
| | - Gemma Vilahur
- Cardiovascular Program- ICCC, Research Institute-Hospital de la Santa Creu i Sant Pau, IIB-Sant Pau, 08025 Barcelona, Spain. (L.B.).
- Centro de Investigación Biomédica en Red Cardiovascular (CIBERCV) Instituto de Salud Carlos III, 28029 Madrid, Spain..
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32
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Kingma JG. Effect of Platelet GPIIb/IIIa Receptor Blockade With MK383 on Infarct Size and Myocardial Blood Flow in a Canine Reocclusion Model. J Cardiovasc Pharmacol Ther 2018; 24:182-192. [PMID: 30428694 DOI: 10.1177/1074248418808389] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Platelet activation and aggregation during ischemia influence reperfusion-related myocyte necrosis, myocardial perfusion at the microvascular level, and thereby eventual recovery of cardiac performance. Inhibition of platelet activity therefore represents a worthwhile target to reduce cellular injury. The current study examined the effects of MK383 (tirofiban), a potent inhibitor of platelet aggregation, on infarct size and myocardial perfusion in canine subjects to either reocclusion (ie, 120-minute + 60-minute ischemia with intervening reperfusion) or prolonged occlusion (ie, 3 hours) followed by reperfusion (180 minutes). Platelet aggregation, infarct size (tetrazolium staining), coronary blood flow (flow probe), coronary vascular reserve, and myocardial perfusion (microspheres) were evaluated. MK383, administered at the time of reperfusion, produced a modest reduction of tissue necrosis (compared to saline-treated controls) in the reocclusion and prolonged occlusion studies. Blood flow in the infarct-related artery after coronary occlusion was comparable between treatment groups, as was myocardial perfusion in the deeper layers of the ischemic region; coronary vascular reserve decreased progressively during reperfusion. Of note, compensatory changes in blood flow within the adjacent nonischemic myocardium were not observed. In conclusion, we report that that limiting platelet aggregation during reperfusion impacted infarct development. Continued investigation into the mechanisms by which inhibition of platelet activity protects myocardium against ischemia-reperfusion injury and improves clinical outcomes is necessary.
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Affiliation(s)
- John G Kingma
- Department of Medicine, Faculty of Medicine, Laval University, Pavillon Ferdinand Vandry, Quebec, Canada
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33
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Thompson LP, Chen L, Polster BM, Pinkas G, Song H. Prenatal hypoxia impairs cardiac mitochondrial and ventricular function in guinea pig offspring in a sex-related manner. Am J Physiol Regul Integr Comp Physiol 2018; 315:R1232-R1241. [PMID: 30365351 DOI: 10.1152/ajpregu.00224.2018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Adverse intrauterine conditions cause fetal growth restriction and increase the risk of adult cardiovascular disease. We hypothesize that intrauterine hypoxia impairs fetal heart function, is sustained after birth, and manifests as both cardiac and mitochondrial dysfunction in offspring guinea pigs (GPs). Pregnant GPs were exposed to 10.5% O2 (HPX) at 50 days of gestation (full term = 65 days) or normoxia (NMX) for the duration of the pregnancy. Pups were allowed to deliver vaginally and raised in a NMX environment. At 90 days of age, mean arterial pressure (MAP) was measured in anesthetized GPs. NMX and prenatally HPX offspring underwent echocardiographic imaging for in vivo measurement of left ventricular cardiac morphology and function, and O2 consumption rates and complex IV enzyme activity were measured from isolated cardiomyocytes and mitochondria, respectively. Prenatal HPX increased ( P < 0.01) MAP (52.3 ± 1.3 and 58.4 ± 1.1 mmHg in NMX and HPX, respectively) and decreased ( P < 0.05) stroke volume (439.8 ± 54.5 and 289.4 ± 15.8 μl in NMX and HPX, respectively), cardiac output (94.4 ± 11.2 and 67.3 ± 3.8 ml/min in NMX and HPX, respectively), ejection fraction, and fractional shortening in male, but not female, GPs. HPX had no effect on left ventricular wall thickness or end-diastolic volume in either sex. HPX reduced mitochondrial maximal respiration and respiratory reserve capacity and complex IV activity rates in hearts of male, but not female, GPs. Prenatal HPX is a programming stimulus that increases MAP and decreases cardiac and mitochondrial function in male offspring. Sex-related differences in the contractile and mitochondrial responses suggest that female GPs are protected from cardiovascular programming of prenatal HPX.
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Affiliation(s)
- Loren P Thompson
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine , Baltimore, Maryland
| | - Ling Chen
- Department of Physiology and Medicine, University of Maryland School of Medicine , Baltimore, Maryland
| | - Brian M Polster
- Department of Anesthesiology, University of Maryland School of Medicine , Baltimore, Maryland
| | - Gerard Pinkas
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine , Baltimore, Maryland
| | - Hong Song
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Maryland School of Medicine , Baltimore, Maryland
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34
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Sutter EN, Mattlage AE, Bland MD, Cherry-Allen KM, Harrison E, Surkar SM, Gidday JM, Chen L, Hershey T, Lee JM, Lang CE. Remote Limb Ischemic Conditioning and Motor Learning: Evaluation of Factors Influencing Response in Older Adults. Transl Stroke Res 2018; 10:362-371. [PMID: 30088217 DOI: 10.1007/s12975-018-0653-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 07/25/2018] [Accepted: 07/27/2018] [Indexed: 12/22/2022]
Abstract
Remote limb ischemic conditioning (RLIC) is a clinically feasible method of promoting tissue protection against subsequent ischemic insult. Recent findings from our lab demonstrated that RLIC robustly enhances motor learning in young, healthy humans. The next step is to determine which individuals would receive maximum benefit from RLIC before applying these findings to clinical rehabilitation populations such as stroke. Numerous factors, such as age, sex, body mass index (BMI), and cardiovascular comorbidities may influence the response. Sixty-nine participants aged 40-80 were randomized to receive either RLIC (n = 33) or sham (n = 36) conditioning. Participants underwent seven consecutive sessions consisting of RLIC or sham conditioning with a blood pressure cuff on the upper extremity and motor training on a stability platform balance task, with two follow-up sessions. Balance change (post-test-pre-test) was compared across participants, groups, and the factors of age, sex, BMI, and comorbidities. Participants in both groups improved their performance on the balance task from pre- to post-test. Overall balance change was independently associated with age and BMI. There was no difference in balance change between RLIC and Sham groups. However, RLIC significantly enhanced balance performance in participants with no comorbidities. Compared with our previous study in young adults, middle-aged and older adults demonstrated smaller improvements on the balance task. RLIC enhanced learning in middle-aged and older adults only in the absence of pre-defined comorbidities. RLIC may be a promising tool for enhancing motor recovery, but the accumulation of comorbidity with age may decrease its effectiveness.
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Affiliation(s)
- Ellen N Sutter
- Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Anna E Mattlage
- Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Marghuretta D Bland
- Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Kendra M Cherry-Allen
- Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Elinor Harrison
- Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Swati M Surkar
- Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Jeffrey M Gidday
- Louisiana State University School of Medicine, New Orleans, LA, USA
| | - Ling Chen
- Division of Biostatistics, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Tamara Hershey
- Department of Psychiatry, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Jin-Moo Lee
- Department of Neurology, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA
| | - Catherine E Lang
- Program in Physical Therapy, Washington University School of Medicine, Campus Box 8502, 4444 Forest Park, Saint Louis, MO, 63108, USA.
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Possible role of mitochondrial K-ATP channel and nitric oxide in protection of the neonatal rat heart. Mol Cell Biochem 2018; 450:35-42. [PMID: 29802596 PMCID: PMC6328520 DOI: 10.1007/s11010-018-3370-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 05/17/2018] [Indexed: 12/20/2022]
Abstract
Cardioprotective effect of ischemic preconditioning (IPC) and ischemic postconditioning (IPoC) in adult hearts is mediated by mitochondrial-K-ATP channels and nitric oxide (NO). During early developmental period, rat hearts exhibit higher resistance to ischemia–reperfusion (I/R) injury and their resistance cannot be further increased by IPC or IPoC. Therefore, we have speculated, whether mechanisms responsible for high resistance of neonatal heart may be similar to those of IPC and IPoC. To test this hypothesis, rat hearts isolated on days 1, 4, 7, and 10 of postnatal life were perfused according to Langendorff. Developed force (DF) of contraction was measured. Hearts were exposed to 40 min of global ischemia followed by reperfusion up to the maximum recovery of DF. IPoC was induced by 5 cycles of 10-s ischemia. Mito-K-ATP blocker (5-HD) was administered 5 min before ischemia and during first 20 min of reperfusion. Another group of hearts was isolated for biochemical analysis of 3-nitrotyrosine, and serum samples were taken to measure nitrate levels. Tolerance to ischemia did not change from day 1 to day 4 but decreased on days 7 and 10. 5-HD had no effect either on neonatal resistance to I/R injury or on cardioprotective effect of IPoC on day 10. Significant difference was found in serum nitrate levels between days 1 and 10 but not in tissue 3-nitrotyrosine content. It can be concluded that while there appears to be significant difference of NO production, mito-K-ATP and ROS probably do not play role in the high neonatal resistance to I/R injury.
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Heinen A, Behmenburg F, Aytulun A, Dierkes M, Zerbin L, Kaisers W, Schaefer M, Meyer-Treschan T, Feit S, Bauer I, Hollmann MW, Huhn R. The release of cardioprotective humoral factors after remote ischemic preconditioning in humans is age- and sex-dependent. J Transl Med 2018; 16:112. [PMID: 29703217 PMCID: PMC5921545 DOI: 10.1186/s12967-018-1480-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2017] [Accepted: 04/10/2018] [Indexed: 01/27/2023] Open
Abstract
Background Preclinical and proof-of-concept studies suggest a cardioprotective effect of remote ischemic preconditioning (RIPC). However, two major clinical trials (ERICCA and RIPHeart) failed to show cardioprotection by RIPC. Aging and gender might be confounding factors of RIPC affecting the inter-organ signalling. Theoretically, confounding factors might prevent the protective potency of RIPC by interfering with cardiac signalling pathways, i.e. at the heart, and/or by affecting the release of humoral factor(s) from the remote organ, e.g. from the upper limb. This study investigated the effect of age and sex on the release of cardioprotective humoral factor(s) after RIPC in humans. Methods Blood samples were taken from young and aged, male and female volunteers before (control) and after RIPC (RIPC). To investigate the protective potency of the different plasma groups obtained from the human volunteers, isolated perfused hearts of young rats were used as bioassay. For this, hearts were perfused with the volunteer plasma (0.5% of coronary flow) before hearts underwent global ischemia and reperfusion. In addition, to characterize the protective potency of humoral factor(s) after RIPC to initiate protection not only in young but also aged hearts, plasma from young male volunteers were transferred to isolated hearts of aged rats. At the end of the experimental protocol, infarct sizes were determined by TTC-staining (expressed as % of left ventricle). Results RIPC plasma of young male volunteers reduced infarct size in young rat hearts from 47 ± 5 to 31 ± 10% (p = 0.02). In contrast, RIPC plasma of aged male volunteers had no protective effect. Infarct size after application of control plasma of young female volunteers was 33 ± 10%, and female RIPC plasma did not lead to an infarct size reduction. RIPC plasma of old female initiated no cardioprotection. RIPC plasma of young male volunteers reduced infarct size in isolated hearts from aged rats (41 ± 5% vs. 51 ± 5%; p < 0.001). Conclusions The release of humoral factor(s) into the blood after RIPC in humans is affected by both age and sex. In addition, these blood borne factor(s) are capable to initiate cardioprotection within the aged heart. Electronic supplementary material The online version of this article (10.1186/s12967-018-1480-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- André Heinen
- Institute of Cardiovascular Physiology, Heinrich-Heine-University Düsseldorf, Universitätsstr. 1, 40225, Düsseldorf, Germany.,Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Friederike Behmenburg
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany.
| | - Aykut Aytulun
- Department of Neurology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Maximilian Dierkes
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Lea Zerbin
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Wolfgang Kaisers
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Maximilian Schaefer
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Tanja Meyer-Treschan
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Susanne Feit
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Inge Bauer
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
| | - Markus W Hollmann
- Department of Anesthesiology, Laboratory of Experimental Intensive Care and Anesthesiology (L.E.I.C.A.), Academic Medical Center (AMC), University of Amsterdam, Meibergdreef 9, 1105, Amsterdam, The Netherlands
| | - Ragnar Huhn
- Department of Anesthesiology, University Hospital Düsseldorf, Moorenstr. 5, 40225, Düsseldorf, Germany
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Kingma JG. Inhibition of Na +/H + Exchanger With EMD 87580 does not Confer Greater Cardioprotection Beyond Preconditioning on Ischemia-Reperfusion Injury in Normal Dogs. J Cardiovasc Pharmacol Ther 2018; 23:254-269. [PMID: 29562750 DOI: 10.1177/1074248418755120] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Postischemic accumulation of intracellular Na+ promotes calcium overload and contributes to cellular necrosis. Cardioprotection afforded by pharmacologic blockade of the sodium-hydrogen exchanger subtype 1 (NHE1) is thought to be more remarkable than that obtained by ischemic conditioning (IC). The window of protection provided by IC pretreatment is maintained even when performed up to 48 hours before ischemia. In addition, the perception exists that combined NHE1 inhibition plus IC produces greater than additive protection against ischemic injury. The current study compared the efficacy of NHE1 blockade by N-[2-methyl-4,5-bis(methylsulfonyl)-benzoyl]-guanidine (EMD 87580 5 mg/kg) combined with first- or second-window IC on ischemic tolerance in dogs subject to 90-minute acute ischemia and 180-minute reperfusion. Infarct size (tetrazolium staining), vascular responses, and myocardial perfusion (microspheres) were assessed. EMD 87580 given before ischemia or before reperfusion did not reduce infarct size (compared to vehicle-treated group). Significant protection against tissue necrosis was obtained by both first- and second-window IC, but additive cardioprotection (ie, greater than that afforded by IC) was not observed by treatment with EMD 87580. Vascular reactivity in the infarct-related artery was not preserved after ischemia-reperfusion in any of the experimental groups. Likewise, either the pharmacologic or the nonpharmacologic interventions did not modify myocardial perfusion. These data demonstrate that EMD 87580 did not protect against ischemia-reperfusion injury regardless of the time of drug administration. Combined EMD 87580 and IC did not antagonize protection that was achieved by either first- or second-window IC alone; no additive protection beyond preconditioning was obtained. Further study is necessary to assess the value of NHE1 blockers as protective agents against myocardial injury.
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Affiliation(s)
- J G Kingma
- 1 Faculty of Medicine, Department of Medicine, Laval University, Québec City, Québec, Canada
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Mester A, Magyar Z, Molnar A, Somogyi V, Tanczos B, Peto K, Nemeth N. Age- and gender-related hemorheological alterations in intestinal ischemia-reperfusion in the rat. J Surg Res 2018; 225:68-75. [PMID: 29605037 DOI: 10.1016/j.jss.2017.12.043] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 12/15/2017] [Accepted: 12/29/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND Intestinal ischemia-reperfusion (I/R) is a life-threatening clinical disorder. During I/R, the microrheological parameters of blood (red blood cell deformability and aggregation) worsen, which may contribute to microcirculatory deterioration. Age and gender also have a great influence on hemorheological parameters. We aimed to investigate the gender and age-related microrheological alterations during intestinal I/R. MATERIALS AND METHODS After the cannulation of the left femoral artery, median laparotomy was performed in Crl:WI rats under general anesthesia. In the young control animals there were no other interventions (female n = 7; male n = 7). In the young (female n = 7; male n = 7) and older I/R groups (female n = 6; male n = 6), the superior mesenteric artery was clipped for 30 min, and a 120-min reperfusion period was observed afterward. Blood samples were taken before and at the 30-min ischemia, in the 30th, 60th, and 120th min of the reperfusion. Hematological parameters, erythrocyte deformability, and aggregation were determined. RESULTS Hematocrit increased significantly in the younger female I/R group. Red blood cell count was higher in male and older animals. In case of white blood cell count, male animals had higher values compared with females. Platelet count elevated in the younger male and older female I/R animals. Red blood cell deformability worsened, mainly in the male and older I/R groups. Enhanced erythrocyte aggregation was seen in all groups, being more expressed in the female I/R groups. CONCLUSIONS Microrheological parameters show gender and age-related differences during intestinal I/R. These observations have importance in the planning and evaluation of experimental data.
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Affiliation(s)
- Anita Mester
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Zsuzsanna Magyar
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Akos Molnar
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Viktoria Somogyi
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Bence Tanczos
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Katalin Peto
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Norbert Nemeth
- Department of Operative Techniques and Surgical Research, Institute of Surgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary.
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Mitochondria and Sex-Specific Cardiac Function. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1065:241-256. [PMID: 30051389 DOI: 10.1007/978-3-319-77932-4_16] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The focus of this chapter is the gender differences in mitochondria in cardiovascular disease. There is broad evidence suggesting that some of the gender differences in cardiovascular outcome may be partially related to differences in mitochondrial biology (Ventura-Clapier R, Moulin M, Piquereau J, Lemaire C, Mericskay M, Veksler V, Garnier A, Clin Sci (Lond) 131(9):803-822, 2017)). Mitochondrial disorders are causally affected by mutations in either nuclear or mitochondrial genes involved in the synthesis of respiratory chain subunits or in their posttranslational control. This can be due to mutations of the mtDNA which are transmitted by the mother or mutations in the nuclear DNA. Because natural selection on mitochondria operates only in females, mutations may have had more deleterious effects in males than in females (Ventura-Clapier R, Moulin M, Piquereau J, Lemaire C, Mericskay M, Veksler V, Garnier A, Clin Sci (Lond) 131(9):803-822, 2017; Camara AK, Lesnefsky EJ, Stowe DF. Antioxid Redox Signal 13(3):279-347, 2010). As mitochondrial mutations can affect all tissues, they are responsible for a large panel of pathologies including neuromuscular disorders, encephalopathies, metabolic disorders, cardiomyopathies, neuropathies, renal dysfunction, etc. Many of these pathologies present sex/gender specificity. Thus, alleviating or preventing mitochondrial dysfunction will contribute to mitigating the severity or progression of the development of diseases. Here, we present evidence for the involvement of mitochondria in the sex specificity of cardiovascular disorders.
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Smetana M, Besik J, Netuka I, Maly J, Maluskova J, Lodererova A, Hoskova L, Franeková J, Pokorna E, Pirk J, Szarszoi O. Sensitivity to perioperative ischemia/reperfusion injury in male and female donor myocardium. Physiol Res 2017; 66:949-957. [PMID: 28937258 DOI: 10.33549/physiolres.933514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Many functions of the cardiovascular apparatus are affected by gender. The aim of our study was find out whether markers of cell death present in the donor myocardium differ in male and female hearts. The study involved 81 patients undergoing heart transplantation from September 2010 to January 2013. Patients were divided into two groups: male allograft (n=49), and female allograft (n=32). Two types of myocardial cell death were analyzed. High-sensitive cardiac troponin T as a necrosis marker and protein bcl-2, caspase 3 and TUNEL as apoptosis markers were measured. We observed a significantly higher level of high-sensitive cardiac troponin T after correcting for predicted ventricular mass in female donors before transplantation as well as in the female allograft group after transplantation throughout the monitored period (P=0.011). There were no differences in apoptosis markers (bcl-2, caspase 3, TUNEL) between male and female hearts before transplantation. Both genders showed a significant increase of TUNEL-positive myocytes one week after transplantation without differences between the groups. Moreover, there were no differences in caspase 3 and bcl-2 expression between the two groups. Our results demonstrated the presence of necrotic and apoptotic cell death in human heart allografts. High-sensitive cardiac troponin T adjusted for predicted ventricular mass as a marker of myocardial necrosis was higher in female donors, and this gender difference was even more pronounced after transplantation.
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Affiliation(s)
- M Smetana
- Department of Cardiovascular Surgery, Institute for Clinical and Experimental Medicine, Prague, Czech Republic.
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Cardiovascular susceptibility to in vivo ischemic myocardial injury in male and female rat offspring exposed to prenatal hypoxia. Clin Sci (Lond) 2017; 131:2303-2317. [DOI: 10.1042/cs20171122] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/20/2017] [Accepted: 07/27/2017] [Indexed: 01/09/2023]
Abstract
Intrauterine growth restriction (IUGR) following prenatal hypoxia exposure leads to a higher risk of developing cardiovascular disease (CVD) in later life. Our aim was to evaluate cardiac susceptibility and its pathophysiological mechanisms following acute myocardial infarction (MI) in adult rat offspring exposed to prenatal hypoxia. Male and female rat offspring, which experienced normoxia (21% O2) or hypoxia (11% O2) in utero underwent sham or MI surgery at 12 weeks of age. Echocardiographic data revealed that both sexes had systolic dysfunction following MI surgery, independent of prenatal hypoxia. Male offspring exposed to prenatal hypoxia, however, had left ventricular dilatation, global dysfunction, and signs of diastolic dysfunction following MI surgery as evident by increased left ventricular internal diameter (LVID) during diastole (MI effect, P<0.01), Tei index (MI effect, P<0.001), and E/E′ ratio (prenatal hypoxia or MI effect, P<0.01). In contrast, diastolic dysfunction in female offspring was not as evident. Cardiac superoxide levels increased only in prenatal hypoxia exposed male offspring. Cardiac sarcoendoplasmic reticulum Ca2+-ATPase2a (SERCA2a) levels, a marker of cardiac injury and dysfunction, decreased in both male and female MI groups independent of prenatal hypoxia. Prenatal hypoxia increased cardiac ryanodine receptor 2 (RYR2) protein levels, while MI reduced RYR2 in only male offspring. In conclusion, male offspring exposed to prenatal hypoxia had an increased susceptibility to ischemic myocardial injury involving cardiac phenotypes similar to heart failure involving diastolic dysfunction in adult life compared with both offspring from healthy pregnancies and their female counterparts.
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Mitochondria: a central target for sex differences in pathologies. Clin Sci (Lond) 2017; 131:803-822. [PMID: 28424375 DOI: 10.1042/cs20160485] [Citation(s) in RCA: 206] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 01/14/2017] [Accepted: 01/23/2017] [Indexed: 12/21/2022]
Abstract
It is increasingly acknowledged that a sex and gender specificity affects the occurrence, development, and consequence of a plethora of pathologies. Mitochondria are considered as the powerhouse of the cell because they produce the majority of energy-rich phosphate bonds in the form of adenosine tri-phosphate (ATP) but they also participate in many other functions like steroid hormone synthesis, reactive oxygen species (ROS) production, ionic regulation, and cell death. Adequate cellular energy supply and survival depend on mitochondrial life cycle, a process involving mitochondrial biogenesis, dynamics, and quality control via mitophagy. It appears that mitochondria are the place of marked sexual dimorphism involving mainly oxidative capacities, calcium handling, and resistance to oxidative stress. In turn, sex hormones regulate mitochondrial function and biogenesis. Mutations in genes encoding mitochondrial proteins are the origin of serious mitochondrial genetic diseases. Mitochondrial dysfunction is also an important parameter for a large panel of pathologies including neuromuscular disorders, encephalopathies, cardiovascular diseases (CVDs), metabolic disorders, neuropathies, renal dysfunction etc. Many of these pathologies present sex/gender specificity. Here we review the sexual dimorphism of mitochondria from different tissues and how this dimorphism takes part in the sex specificity of important pathologies mainly CVDs and neurological disorders.
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Arnold AP, Cassis LA, Eghbali M, Reue K, Sandberg K. Sex Hormones and Sex Chromosomes Cause Sex Differences in the Development of Cardiovascular Diseases. Arterioscler Thromb Vasc Biol 2017; 37:746-756. [PMID: 28279969 DOI: 10.1161/atvbaha.116.307301] [Citation(s) in RCA: 208] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 02/15/2017] [Indexed: 12/25/2022]
Abstract
This review summarizes recent evidence concerning hormonal and sex chromosome effects in obesity, atherosclerosis, aneurysms, ischemia/reperfusion injury, and hypertension. Cardiovascular diseases occur and progress differently in the 2 sexes, because biological factors differing between the sexes have sex-specific protective and harmful effects. By comparing the 2 sexes directly, and breaking down sex into its component parts, one can discover sex-biasing protective mechanisms that might be targeted in the clinic. Gonadal hormones, especially estrogens and androgens, have long been found to account for some sex differences in cardiovascular diseases, and molecular mechanisms mediating these effects have recently been elucidated. More recently, the inherent sexual inequalities in effects of sex chromosome genes have also been implicated as contributors in animal models of cardiovascular diseases, especially a deleterious effect of the second X chromosome found in females but not in males. Hormonal and sex chromosome mechanisms interact in the sex-specific control of certain diseases, sometimes by opposing the action of the other.
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Affiliation(s)
- Arthur P Arnold
- From the Department of Integrative Biology and Physiology, University of California, Los Angeles (A.P.A.); Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington (L.A.C.); Department of Anesthesiology (M.E.) and Department of Human Genetics (K.R.), David Geffen School of Medicine at UCLA, Los Angeles, CA; and Department of Medicine, Georgetown University Medical Center, Washington, DC (K.S.).
| | - Lisa A Cassis
- From the Department of Integrative Biology and Physiology, University of California, Los Angeles (A.P.A.); Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington (L.A.C.); Department of Anesthesiology (M.E.) and Department of Human Genetics (K.R.), David Geffen School of Medicine at UCLA, Los Angeles, CA; and Department of Medicine, Georgetown University Medical Center, Washington, DC (K.S.)
| | - Mansoureh Eghbali
- From the Department of Integrative Biology and Physiology, University of California, Los Angeles (A.P.A.); Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington (L.A.C.); Department of Anesthesiology (M.E.) and Department of Human Genetics (K.R.), David Geffen School of Medicine at UCLA, Los Angeles, CA; and Department of Medicine, Georgetown University Medical Center, Washington, DC (K.S.)
| | - Karen Reue
- From the Department of Integrative Biology and Physiology, University of California, Los Angeles (A.P.A.); Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington (L.A.C.); Department of Anesthesiology (M.E.) and Department of Human Genetics (K.R.), David Geffen School of Medicine at UCLA, Los Angeles, CA; and Department of Medicine, Georgetown University Medical Center, Washington, DC (K.S.)
| | - Kathryn Sandberg
- From the Department of Integrative Biology and Physiology, University of California, Los Angeles (A.P.A.); Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington (L.A.C.); Department of Anesthesiology (M.E.) and Department of Human Genetics (K.R.), David Geffen School of Medicine at UCLA, Los Angeles, CA; and Department of Medicine, Georgetown University Medical Center, Washington, DC (K.S.)
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Schaun MI, Marschner RA, Peres TR, Markoski MM, Lehnen AM. Aerobic training prior to myocardial infarction increases cardiac GLUT4 and partially preserves heart function in spontaneously hypertensive rats. Appl Physiol Nutr Metab 2017; 42:334-337. [DOI: 10.1139/apnm-2016-0439] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We assessed cardiac function (echocardiographic) and glucose transporter 4 (GLUT4) expression (Western blot) in response to 10 weeks of aerobic training (treadmill) prior to acute myocardial infarction (AMI) by ligation of the left coronary artery in spontaneously hypertensive rats. Animals were allocated to sedentary+sham, sedentary+AMI, training+sham, and training+AMI. Aerobic training prior to AMI partially preserves heart function. AMI and/or aerobic training increased GLUT4 expression. However, those animals trained prior to AMI showed a greater increase in GLUT4 in cardiomyocytes.
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Affiliation(s)
- Maximiliano Isoppo Schaun
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia, Porto Alegre, RS, 90620-001, Brazil
| | - Rafael Aguiar Marschner
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia, Porto Alegre, RS, 90620-001, Brazil
| | - Thiago Rodrigues Peres
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia, Porto Alegre, RS, 90620-001, Brazil
| | - Melissa Medeiros Markoski
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia, Porto Alegre, RS, 90620-001, Brazil
| | - Alexandre Machado Lehnen
- Instituto de Cardiologia do Rio Grande do Sul/Fundação Universitária de Cardiologia, Porto Alegre, RS, 90620-001, Brazil
- Faculdade Sogipa de Educação Física, Porto Alegre, Rio Grande do Sul, 90550-003, Brazil
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Vognsen M, Fabian-Jessing BK, Secher N, Løfgren B, Dezfulian C, Andersen LW, Granfeldt A. Contemporary animal models of cardiac arrest: A systematic review. Resuscitation 2017; 113:115-123. [PMID: 28214538 DOI: 10.1016/j.resuscitation.2017.01.024] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2016] [Revised: 01/21/2017] [Accepted: 01/25/2017] [Indexed: 01/01/2023]
Abstract
AIM OF THE STUDY Animal models are widely used in cardiac arrest research. This systematic review aimed to provide an overview of contemporary animal models of cardiac arrest. METHODS Using a comprehensive research strategy, we searched PubMed and EMBASE from March 8, 2011 to March 8, 2016 for cardiac arrest animal models. Two investigators reviewed titles and abstracts for full text inclusion from which data were extracted according to pre-defined definitions. RESULTS Search criteria yielded 1741 unique titles and abstracts of which 490 full articles were included. The most common animals used were pigs (52%) followed by rats (35%) and mice (6%). Studies favored males (52%) over females (16%); 17% of studies included both sexes, while 14% omitted to report on sex. The most common methods for induction of cardiac arrest were either electrically-induced ventricular fibrillation (54%), asphyxia (25%), or potassium (8%). The median no-flow time was 8min (quartiles: 5, 8, range: 0-37min). The majority of studies used adrenaline during resuscitation (64%), while bicarbonate (17%), vasopressin (8%) and other drugs were used less prevalently. In 53% of the studies, the post-cardiac arrest observation time was ≥24h. Neurological function was an outcome in 48% of studies while 43% included assessment of a cardiac outcome. CONCLUSIONS Multiple animal models of cardiac arrest exist. The great heterogeneity of these models along with great variability in definitions and reporting make comparisons between studies difficult. There is a need for standardization of animal cardiac arrest research and reporting.
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Affiliation(s)
- Mikael Vognsen
- Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark
| | | | - Niels Secher
- Department of Anaesthesiology and Intensive Care Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Bo Løfgren
- Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark; Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark; Department of Internal Medicine, Regional Hospital of Randers, Randers, Denmark
| | - Cameron Dezfulian
- Safar Center for Resuscitation Research, Vascular Medicine Institute and Critical Care Medicine Department, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Lars W Andersen
- Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark
| | - Asger Granfeldt
- Department of Anaesthesiology and Intensive Care Medicine, Aarhus University Hospital, Aarhus, Denmark; Institute of Clinical Medicine, Aarhus University, Aarhus, Denmark.
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MRAZKOVA H, LISCHKE R, HERGET J. Influence of Gender on Ischemia-Reperfusion Injury in Lungs in an Animal Model. Physiol Res 2016; 65:953-958. [DOI: 10.33549/physiolres.933273] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
As with other organ transplants even lung transplantation raises the question of the possibility of the influence of gender on ischemia-reperfusion injury. This is a current topic especially for increasingly utilized method of lung transplantation from non-heart-beating donors, where reperfusion preceded by a period of warm and cold ischemia with subsequent treatment options for lung graft reperfusion. For measurements we used our laboratory previously created and validated animal model for ex vivo lung transplantation. As with other organ systems of our monitoring resulted protective effect of female sex on ischemia reperfusion lung injury. In two of the three parameters that were monitored, we found a significant difference. In females, higher oxygen transfer ability after reperfusion was manifested as well as lower perfusion pressure (vascular compliance). Conversely, weight gain (the development of pulmonary edema) in males was not significant difference from the females. These conclusions could cause further studies leading to influence the selection of appropriate donor grafts.
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Affiliation(s)
- H. MRAZKOVA
- Third Department of Surgery, University Hospital Motol and First Medical School, Charles University in Prague, Prague, Czech Republic
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Dedkov EI, Bogatyryov Y, Pavliak K, Santos AT, Chen YF, Zhang Y, Pingitore A. Sex-related differences in intrinsic myocardial properties influence cardiac function in middle-aged rats during infarction-induced left ventricular remodeling. Physiol Rep 2016; 4:4/11/e12822. [PMID: 27288060 PMCID: PMC4908497 DOI: 10.14814/phy2.12822] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 05/15/2016] [Indexed: 11/24/2022] Open
Abstract
We previously determined that residual left ventricular (LV) myocardium of middle-aged rats had sex-related differences in regional tissue properties 4 weeks after a large myocardial infarction (MI). However, the impact of such differences on cardiac performance remained unclear. Therefore, our current study aimed to elucidate whether sex-related changes in MI-induced myocardial remodeling can influence cardiac function. A similar-sized MI was induced in 12-month-old male (M-MI) and female (F-MI) Sprague-Dawley rats by ligation of the left coronary artery. The cardiac function was monitored for 2 months after MI and then various LV parameters were compared between sexes. We found that although two sex groups had a similar pattern of MI-induced decline in LV function, F-MI rats had greater cardiac performance compared to M-MI rats, considering the higher values of EF (39.9 ± 3.4% vs. 26.7 ± 7.7%, P < 0.05), SW index (40.4 ± 2.1 mmHg • mL/kg vs. 20.2 ± 3.3 mmHg • mL/kg, P < 0.001), and CI (139.2 ± 7.9 mL/min/kg vs. 74.9 ± 14.7 mL/min/kg, P < 0.01). The poorer pumping capacity in M-MI hearts was associated with markedly reduced LV compliance and prolonged relaxation. On the tissue level, F-MI rats revealed a higher, than in M-MI rats, density of cardiac myocytes in the LV free wall (2383.8 ± 242.6 cells/mm(2) vs. 1785.7 ± 55.9 cells/mm(2), P < 0.05). The latter finding correlated with a lower density of apoptotic cardiac myocytes in residual LV myocardium of F-MI rats (0.18 ± 0.08 cells/mm(2) vs. 0.91 ± 0.30 cells/mm(2) in males, P < 0.01). Thus, our data suggested that F-MI rats had markedly attenuated decline in cardiac performance compared to males due to ability of female rats to better retain functionally favorable intrinsic myocardial properties.
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Affiliation(s)
- Eduard I Dedkov
- Department of Biomedical Sciences, New York Institute of Technology (NYIT) College of Osteopathic Medicine, Old Westbury, New York
| | - Yevgen Bogatyryov
- Department of Biomedical Sciences, New York Institute of Technology (NYIT) College of Osteopathic Medicine, Old Westbury, New York
| | - Kristina Pavliak
- Department of Biomedical Sciences, New York Institute of Technology (NYIT) College of Osteopathic Medicine, Old Westbury, New York
| | - Adora T Santos
- Department of Biomedical Sciences, New York Institute of Technology (NYIT) College of Osteopathic Medicine, Old Westbury, New York
| | - Yue-Feng Chen
- Department of Biomedical Sciences, New York Institute of Technology (NYIT) College of Osteopathic Medicine, Old Westbury, New York
| | - Youhua Zhang
- Department of Biomedical Sciences, New York Institute of Technology (NYIT) College of Osteopathic Medicine, Old Westbury, New York
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Sbert-Roig M, Bauzá-Thorbrügge M, Galmés-Pascual BM, Capllonch-Amer G, García-Palmer FJ, Lladó I, Proenza AM, Gianotti M. GPER mediates the effects of 17β-estradiol in cardiac mitochondrial biogenesis and function. Mol Cell Endocrinol 2016; 420:116-24. [PMID: 26628039 DOI: 10.1016/j.mce.2015.11.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 11/09/2015] [Accepted: 11/22/2015] [Indexed: 12/28/2022]
Abstract
Considering the sexual dimorphism described in cardiac mitochondrial function and oxidative stress, we aimed to investigate the role of 17β-estradiol (E2) in these sex differences and the contribution of E2 receptors to these effects. As a model of chronic deprivation of ovarian hormones, we used ovariectomized (OVX) rats, half of which were treated with E2. Ovariectomy decreased markers of cardiac mitochondrial biogenesis and function and also increased oxidative stress, whereas E2 counteracted these effects. In H9c2 cardiomyocytes we observed that G-protein coupled estrogen receptor (GPER) agonist mimicked the effects of E2 in enhancing mitochondrial function and biogenesis, whereas GPER inhibitor neutralized them. These data suggest that E2 enhances mitochondrial function and decreases oxidative stress in cardiac muscle, thus it could be responsible for the sexual dimorphism observed in mitochondrial biogenesis and function in this tissue. These effects seem to be mediated through GPER stimulation.
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Affiliation(s)
- Miquel Sbert-Roig
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain
| | - Marco Bauzá-Thorbrügge
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain
| | - Bel M Galmés-Pascual
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain
| | - Gabriela Capllonch-Amer
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain
| | - Francisco J García-Palmer
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, Madrid, Spain
| | - Isabel Lladó
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, Madrid, Spain
| | - Ana M Proenza
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, Madrid, Spain
| | - Magdalena Gianotti
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7, 5. E-07122 Palma de Mallorca, Illes Balears, Spain; Instituto de Investigación Sanitaria de Palma (IdISPa), Hospital Universitario Son Espases, edificio S. E-07120 Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y la Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, Madrid, Spain.
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Ferdinandy P, Hausenloy DJ, Heusch G, Baxter GF, Schulz R. Interaction of risk factors, comorbidities, and comedications with ischemia/reperfusion injury and cardioprotection by preconditioning, postconditioning, and remote conditioning. Pharmacol Rev 2015; 66:1142-74. [PMID: 25261534 DOI: 10.1124/pr.113.008300] [Citation(s) in RCA: 461] [Impact Index Per Article: 51.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Pre-, post-, and remote conditioning of the myocardium are well described adaptive responses that markedly enhance the ability of the heart to withstand a prolonged ischemia/reperfusion insult and provide therapeutic paradigms for cardioprotection. Nevertheless, more than 25 years after the discovery of ischemic preconditioning, we still do not have established cardioprotective drugs on the market. Most experimental studies on cardioprotection are still undertaken in animal models, in which ischemia/reperfusion is imposed in the absence of cardiovascular risk factors. However, ischemic heart disease in humans is a complex disorder caused by, or associated with, cardiovascular risk factors and comorbidities, including hypertension, hyperlipidemia, diabetes, insulin resistance, heart failure, altered coronary circulation, and aging. These risk factors induce fundamental alterations in cellular signaling cascades that affect the development of ischemia/reperfusion injury per se and responses to cardioprotective interventions. Moreover, some of the medications used to treat these risk factors, including statins, nitrates, and antidiabetic drugs, may impact cardioprotection by modifying cellular signaling. The aim of this article is to review the recent evidence that cardiovascular risk factors and their medication may modify the response to cardioprotective interventions. We emphasize the critical need to take into account the presence of cardiovascular risk factors and concomitant medications when designing preclinical studies for the identification and validation of cardioprotective drug targets and clinical studies. This will hopefully maximize the success rate of developing rational approaches to effective cardioprotective therapies for the majority of patients with multiple risk factors.
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Affiliation(s)
- Péter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary (P.F.); Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Szeged and Pharmahungary Group, Szeged, Hungary (P.F.); The Hatter Cardiovascular Institute, University College London, London, United Kingdom (D.J.H.); Institute for Pathophysiology, University of Essen Medical School, Essen, Germany (G.H.); Division of Pharmacology, Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom (G.F.B.); and Institute of Physiology, Justus-Liebig University, Giessen, Germany (R.S.)
| | - Derek J Hausenloy
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary (P.F.); Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Szeged and Pharmahungary Group, Szeged, Hungary (P.F.); The Hatter Cardiovascular Institute, University College London, London, United Kingdom (D.J.H.); Institute for Pathophysiology, University of Essen Medical School, Essen, Germany (G.H.); Division of Pharmacology, Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom (G.F.B.); and Institute of Physiology, Justus-Liebig University, Giessen, Germany (R.S.)
| | - Gerd Heusch
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary (P.F.); Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Szeged and Pharmahungary Group, Szeged, Hungary (P.F.); The Hatter Cardiovascular Institute, University College London, London, United Kingdom (D.J.H.); Institute for Pathophysiology, University of Essen Medical School, Essen, Germany (G.H.); Division of Pharmacology, Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom (G.F.B.); and Institute of Physiology, Justus-Liebig University, Giessen, Germany (R.S.)
| | - Gary F Baxter
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary (P.F.); Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Szeged and Pharmahungary Group, Szeged, Hungary (P.F.); The Hatter Cardiovascular Institute, University College London, London, United Kingdom (D.J.H.); Institute for Pathophysiology, University of Essen Medical School, Essen, Germany (G.H.); Division of Pharmacology, Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom (G.F.B.); and Institute of Physiology, Justus-Liebig University, Giessen, Germany (R.S.)
| | - Rainer Schulz
- Department of Pharmacology and Pharmacotherapy, Semmelweis University, Budapest, Hungary (P.F.); Cardiovascular Research Group, Department of Biochemistry, University of Szeged, Szeged and Pharmahungary Group, Szeged, Hungary (P.F.); The Hatter Cardiovascular Institute, University College London, London, United Kingdom (D.J.H.); Institute for Pathophysiology, University of Essen Medical School, Essen, Germany (G.H.); Division of Pharmacology, Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, United Kingdom (G.F.B.); and Institute of Physiology, Justus-Liebig University, Giessen, Germany (R.S.)
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Doul J, Charvátová Z, Ošťádalová I, Kohutiar M, Maxová H, Ošťádal B. Neonatal rat hearts cannot be protected by ischemic postconditioning. Physiol Res 2015; 64:789-94. [PMID: 26047384 DOI: 10.33549/physiolres.932981] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Although there are abundant data on ischemic postconditioning (IPoC) in the adult myocardium, this phenomenon has not yet been investigated in neonatal hearts. To examine possible protective effects of IPoC, rat hearts isolated on days 1, 4, 7 and 10 of postnatal life were perfused according to Langendorff. Developed force (DF) of contraction was measured by an isometric force transducer. Hearts were exposed to 40 or 60 min of global ischemia followed by reperfusion up to the maximum recovery of DF. IPoC was induced by three cycles of 10, 30 or 60 s periods of global ischemia/reperfusion. To further determine the extent of ischemic injury, lactate dehydrogenase (LDH) release was measured in the coronary effluent. Tolerance to ischemia did not change from day 1 to day 4 but decreased to days 7 and 10. None of the postconditioning protocols tested led to significant protection on the day 10. Prolonging the period of sustained ischemia to 60 min on day 10 did not lead to better protection. The 3x30 s protocol was then evaluated on days 1, 4 and 7 without any significant effects. There were no significant differences in LDH release between postconditioned and control groups. It can be concluded that neonatal hearts cannot be protected by ischemic postconditioning during first 10 days of postnatal life.
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Affiliation(s)
- J Doul
- Department of Pathophysiology, Second Faculty of Medicine, Charles University in Prague, Prague, Czech Republic.
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