1
|
Tasdemiroglu Y, Council-Troche M, Chen M, Ledford B, Norris RA, Poelzing S, Gourdie RG, He JQ. Degradation of the α-Carboxyl Terminus 11 Peptide: In Vivo and Ex Vivo Impacts of Time, Temperature, Inhibitors, and Gender in Rat. ACS Pharmacol Transl Sci 2024; 7:1624-1636. [PMID: 38751644 PMCID: PMC11091968 DOI: 10.1021/acsptsci.4c00120] [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: 03/04/2024] [Revised: 04/03/2024] [Accepted: 04/08/2024] [Indexed: 05/18/2024]
Abstract
In previous research, a synthetic α-carboxyl terminus 1 (αCT1) peptide derived from connexin 43 (Cx43) and its variant (αCT11) showed beneficial effects in an ex vivo ischemia-reperfusion (I/R) heart injury model in mouse. In an in vivo mouse model of cryo-induced ventricular injury, αCT1 released from adhesive cardiac patches reduced Cx43 remodeling and arrhythmias, as well as maintained cardiac conduction. Whether intravenous injection of αCT1 or αCT11 produces similar outcomes has not been investigated. Given the possibility of peptide degradation in plasma, this study utilized in vivo I/R cardiac injury and ex vivo blood plasma models to examine factors that may limit the therapeutic potential of peptide therapeutics in vivo. Following tail vein administration of αCT11 (100 μM) in blood, no effect on I/R infarct size was observed in adult rat hearts on day 1 (D1) and day 28 (D28) after injury (p > 0.05). There was also no difference in the echocardiographic ejection fraction (EF%) between the control and the αCT11 groups (p > 0.05). Surprisingly, αCT11 in blood plasma collected from these rats was undetectable within ∼10 min after tail vein injection. To investigate factors that may modulate αCT11 degradation in blood, αCT11 was directly added to blood plasma isolated from normal rats without I/R and peptide levels were measured under different experimental conditions. Consistent with in vivo observations, significant αCT11 degradation occurred in plasma within 10 min at 22 and 37 °C and was nearly undetectable by 30 min. These responses were reduced by the addition of protease/phosphatase (PTase/PPTase) inhibitors to the isolated plasma. Interestingly, no significant differences in αCT11 degradation in plasma were noted between male and female rats. We conclude that fast degradation of αCT11 is likely the reason that no beneficial effects were observed in the in vivo I/R model and inhibition or shielding from PTase/PPTase activity may be a strategy that will assist with the viability of peptide therapeutics.
Collapse
Affiliation(s)
- Yagmur Tasdemiroglu
- Department
of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, 225 Duck Pond Drive, Blacksburg, Virginia 24061, United States
| | - McAlister Council-Troche
- Department
of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, 225 Duck Pond Drive, Blacksburg, Virginia 24061, United States
| | - Miao Chen
- Department
of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, 225 Duck Pond Drive, Blacksburg, Virginia 24061, United States
| | - Benjamin Ledford
- Department
of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, 225 Duck Pond Drive, Blacksburg, Virginia 24061, United States
| | - Russell A. Norris
- Department
of Medicine, Medical University of South
Carolina, Charleston, South Carolina 29425, United States
| | - Steven Poelzing
- Center
for Vascular and Heart Research, Fralin Biomedical Research Institute, Virginia Tech, 2 Riverside Circle, Roanoke, Virginia 24016, United States
| | - Robert G. Gourdie
- Center
for Vascular and Heart Research, Fralin Biomedical Research Institute, Virginia Tech, 2 Riverside Circle, Roanoke, Virginia 24016, United States
| | - Jia-Qiang He
- Department
of Biomedical Sciences and Pathobiology, College of Veterinary Medicine, Virginia Tech, 225 Duck Pond Drive, Blacksburg, Virginia 24061, United States
| |
Collapse
|
2
|
Sex Steroids Effects on Asthma: A Network Perspective of Immune and Airway Cells. Cells 2022; 11:cells11142238. [PMID: 35883681 PMCID: PMC9318292 DOI: 10.3390/cells11142238] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 07/13/2022] [Accepted: 07/17/2022] [Indexed: 11/17/2022] Open
Abstract
A multitude of evidence has suggested the differential incidence, prevalence and severity of asthma between males and females. A compilation of recent literature recognized sex differences as a significant non-modifiable risk factor in asthma pathogenesis. Understanding the cellular and mechanistic basis of sex differences remains complex and the pivotal point of this ever elusive quest, which remains to be clarified in the current scenario. Sex steroids are an integral part of human development and evolution while also playing a critical role in the conditioning of the immune system and thereby influencing the function of peripheral organs. Classical perspectives suggest a pre-defined effect of sex steroids, generalizing estrogens popularly under the “estrogen paradox” due to conflicting reports associating estrogen with a pro- and anti-inflammatory role. On the other hand, androgens are classified as “anti-inflammatory,” serving a protective role in mitigating inflammation. Although considered mainstream and simplistic, this observation remains valid for numerous reasons, as elaborated in the current review. Women appear immune-favored with stronger and more responsive immune elements than men. However, the remarkable female predominance of diverse autoimmune and allergic diseases contradicts this observation suggesting that hormonal differences between the sexes might modulate the normal and dysfunctional regulation of the immune system. This review illustrates the potential relationship between key elements of the immune cell system and their interplay with sex steroids, relevant to structural cells in the pathophysiology of asthma and many other lung diseases. Here, we discuss established and emerging paradigms in the clarification of observed sex differences in asthma in the context of the immune system, which will deepen our understanding of asthma etiopathology.
Collapse
|
3
|
Xiong X, Li J, Zhang S, Jia X, Xiao C. Involvement of Polyamines From Cardiac Mast Cells in Myocardial Remodeling Induced by Pressure Overload Through Mitochondrial Permeability Transition Pore Opening. Front Cardiovasc Med 2022; 9:850688. [PMID: 35479269 PMCID: PMC9035547 DOI: 10.3389/fcvm.2022.850688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 03/03/2022] [Indexed: 11/13/2022] Open
Abstract
Objective Polyamines mainly contain spermine (SPM), spermidine (SPD), and putrescine (PUT). Many research results suggest that polyamines participate in cell proliferation, differentiation, and the regulation of gene expression, and have a close relationship with the occurrence and development of many diseases. However, the role and possible mechanisms of action of polyamines from cardiac mast cells in myocardial remodeling induced by pressure overload remain to be elucidated. Methods Pressure overload was induced by abdominal aortic constriction (AAC). Toluidine blue staining was used to visualize mast cells in cardiac tissue. The polyamine content of cardiac tissue was analyzed using high-performance liquid chromatography. Opening of the mitochondrial permeability transition pore (MPTP) was determined by the Ca2+-induced swelling of isolated cardiac mitochondria, measured as a reduction in A520. Results Compared with sham rats, the cardiac mast cell density, the polyamine content (PUT, SPB, and SPM), and myocardial MPTP opening in rats with AAC were significantly increased (P < 0.05), and were accompanied by increased myocardial fibrosis and heart weight/body weight ratio. Intraperitoneal injection of polyamines mimicked these results, and these effects were reversed by cromolyn sodium, a mast cell stabilizer (P < 0.05). Myocardial MPTP opening increased in rats with AAC (P < 0.05), and the three polyamines also increased myocardial MPTP opening (P < 0.05). Conclusion Mast cell-derived polyamines are involved in pressure overload-induced myocardial remodeling by increasing opening of the MPTP.
Collapse
Affiliation(s)
- Xiaolan Xiong
- Third-Grade Pharmacological Laboratory on Traditional Chinese Medicine China Three Gorges University, Yichang, China
- Medical College, China Three Gorges University, Yichang, China
- The Second People’s Hospital of Yichang, Yichang, China
| | - Junming Li
- The First People’s Hospital of Yichang, Yichang, China
| | - Shizhong Zhang
- Third-Grade Pharmacological Laboratory on Traditional Chinese Medicine China Three Gorges University, Yichang, China
- Medical College, China Three Gorges University, Yichang, China
- *Correspondence: Shizhong Zhang,
| | - Xiaoli Jia
- Third-Grade Pharmacological Laboratory on Traditional Chinese Medicine China Three Gorges University, Yichang, China
- Medical College, China Three Gorges University, Yichang, China
| | - Chao Xiao
- Third-Grade Pharmacological Laboratory on Traditional Chinese Medicine China Three Gorges University, Yichang, China
- Medical College, China Three Gorges University, Yichang, China
| |
Collapse
|
4
|
Fan Z, Che H, Yang S, Chen C. Estrogen and estrogen receptor signaling promotes allergic immune responses: Effects on immune cells, cytokines, and inflammatory factors involved in allergy. Allergol Immunopathol (Madr) 2019; 47:506-512. [PMID: 31248582 DOI: 10.1016/j.aller.2019.03.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 03/09/2019] [Accepted: 03/11/2019] [Indexed: 12/21/2022]
Abstract
Hypersensitivity occurs when the body is stimulated by an antigen, resulting in an immune response, and leads to a physiological disorder or abnormal tissue trauma. Various immune cells, cytokines, and inflammatory mediators are involved in the immune responses related to allergic diseases, which are the core of anaphylaxis. Estrogen receptors are widely distributed in immune cells, which combine with estrogen and participate in allergic responses by affecting immune cells, cytokines, and inflammatory factors. We aimed to summarize the association between estrogen and allergic reactions to provide a scientific basis for understanding and studying the mechanisms of allergic diseases.
Collapse
|
5
|
Weidner K, Behnes M, Rusnak J, Schupp T, Hoppner J, Taton G, Reiser L, Bollow A, Reichelt T, Ellguth D, Engelke N, Kuche P, Ansari U, El‐Battrawy I, Lang S, Nienaber CA, Akin M, Mashayekhi K, Ferdinand D, Weiß C, Borggrefe M, Akin I. Male sex increases mortality in ventricular tachyarrhythmias. Intern Med J 2019; 49:711-721. [DOI: 10.1111/imj.14170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 11/13/2018] [Accepted: 11/14/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Kathrin Weidner
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Michael Behnes
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Jonas Rusnak
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Tobias Schupp
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Jorge Hoppner
- Clinic for Diagnostic and Interventional Radiology HeidelbergUniversity of Heidelberg Heidelberg Germany
| | - Gabriel Taton
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Linda Reiser
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Armin Bollow
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Thomas Reichelt
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Dominik Ellguth
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Niko Engelke
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Philipp Kuche
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Uzair Ansari
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Ibrahim El‐Battrawy
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Siegfried Lang
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | | | - Muharrem Akin
- Department of Cardiology and AngiologyHannover Medical School Hannover Germany
| | - Kambis Mashayekhi
- Department of Cardiology and Angiology IIUniversity Heart Center Freiburg Bad Krozingen Germany
| | - Dennis Ferdinand
- Institute of Biomathematics and Medical Statistics, Faculty of Medicine MannheimUniversity Medical Center Mannheim Germany
| | | | - Martin Borggrefe
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| | - Ibrahim Akin
- First Department of Medicine, University Medical Centre Mannheim (UMM), Faculty of Medicine MannheimUniversity of Heidelberg, European Center for AngioScience (ECAS), and DZHK (German Center for Cardiovascular Research) partner site Heidelberg/Mannheim Mannheim Germany
| |
Collapse
|
6
|
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.
Collapse
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.
| |
Collapse
|
7
|
Apolipoprotein A-I proteolysis in aortic valve stenosis: role of cathepsin S. Basic Res Cardiol 2018; 113:30. [DOI: 10.1007/s00395-018-0689-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/26/2018] [Accepted: 06/12/2018] [Indexed: 01/11/2023]
|
8
|
Mechanisms contributing to cardiac remodelling. Clin Sci (Lond) 2017; 131:2319-2345. [PMID: 28842527 DOI: 10.1042/cs20171167] [Citation(s) in RCA: 118] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/26/2017] [Accepted: 07/31/2017] [Indexed: 12/14/2022]
Abstract
Cardiac remodelling is classified as physiological (in response to growth, exercise and pregnancy) or pathological (in response to inflammation, ischaemia, ischaemia/reperfusion (I/R) injury, biomechanical stress, excess neurohormonal activation and excess afterload). Physiological remodelling of the heart is characterized by a fine-tuned and orchestrated process of beneficial adaptations. Pathological cardiac remodelling is the process of structural and functional changes in the left ventricle (LV) in response to internal or external cardiovascular damage or influence by pathogenic risk factors, and is a precursor of clinical heart failure (HF). Pathological remodelling is associated with fibrosis, inflammation and cellular dysfunction (e.g. abnormal cardiomyocyte/non-cardiomyocyte interactions, oxidative stress, endoplasmic reticulum (ER) stress, autophagy alterations, impairment of metabolism and signalling pathways), leading to HF. This review describes the key molecular and cellular responses involved in pathological cardiac remodelling.
Collapse
|
9
|
Harrington J, Fillmore N, Gao S, Yang Y, Zhang X, Liu P, Stoehr A, Chen Y, Springer D, Zhu J, Wang X, Murphy E. A Systems Biology Approach to Investigating Sex Differences in Cardiac Hypertrophy. J Am Heart Assoc 2017; 6:e005838. [PMID: 28862954 PMCID: PMC5586433 DOI: 10.1161/jaha.117.005838] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 06/21/2017] [Indexed: 12/24/2022]
Abstract
BACKGROUND Heart failure preceded by hypertrophy is a leading cause of death, and sex differences in hypertrophy are well known, although the basis for these sex differences is poorly understood. METHODS AND RESULTS This study used a systems biology approach to investigate mechanisms underlying sex differences in cardiac hypertrophy. Male and female mice were treated for 2 and 3 weeks with angiotensin II to induce hypertrophy. Sex differences in cardiac hypertrophy were apparent after 3 weeks of treatment. RNA sequencing was performed on hearts, and sex differences in mRNA expression at baseline and following hypertrophy were observed, as well as within-sex differences between baseline and hypertrophy. Sex differences in mRNA were substantial at baseline and reduced somewhat with hypertrophy, as the mRNA differences induced by hypertrophy tended to overwhelm the sex differences. We performed an integrative analysis to identify mRNA networks that were differentially regulated in the 2 sexes by hypertrophy and obtained a network centered on PPARα (peroxisome proliferator-activated receptor α). Mouse experiments further showed that acute inhibition of PPARα blocked sex differences in the development of hypertrophy. CONCLUSIONS The data in this study suggest that PPARα is involved in the sex-dimorphic regulation of cardiac hypertrophy.
Collapse
Affiliation(s)
- Josephine Harrington
- Systems Biology Center, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Natasha Fillmore
- Systems Biology Center, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Shouguo Gao
- System Biology Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Yanqin Yang
- DNA Sequencing & Genomics Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Xue Zhang
- System Biology Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Poching Liu
- DNA Sequencing & Genomics Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Andrea Stoehr
- Systems Biology Center, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Ye Chen
- System Biology Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Danielle Springer
- Murine Phenotyping Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Jun Zhu
- Systems Biology Center, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
- DNA Sequencing & Genomics Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Xujing Wang
- System Biology Core, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| | - Elizabeth Murphy
- Systems Biology Center, National Heart, Lung and Blood Institute National Institutes of Health, Bethesda, MD
| |
Collapse
|
10
|
Bening C, Hamouda K, Leyh R. Sex differences in volume overload in skinned fibers. BMC Cardiovasc Disord 2016; 16:197. [PMID: 27737639 PMCID: PMC5064933 DOI: 10.1186/s12872-016-0370-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2016] [Accepted: 09/28/2016] [Indexed: 11/17/2022] Open
Abstract
Background The impact of sex on cardiac morphology and function in chronic volume overload has been described in detail. However, the relation between sex and contractile properties at the actin-myosin level has not been well defined. Therefore, we evaluated the influence of sex on the contractile capacities of patients with chronic volume overload. Methods In 36 patients (18 males, 65 ± 9 years; 18 females, 65 ± 13 years) scheduled for elective mitral valve surgery due to severe mitral regurgitation (MR) with preserved left ventricular function, right auricle samples were obtained prior to extracorporal circulation. The fibers were prepared and skinned and exposed to a gradual increase in the calcium concentration (from pCa of 6.5–4.0) for calcium-induced force-developing measurements. Calcium sensitivity was also measured and recorded. Results The pCa-force relationship of the fibers obtained from males and females was significantly different, with the force values of the female fibers greater than those of male fibers at maximum calcium concentrations (pCa of 4.0: 3.6 ± 0.3 mN versus 3.2 ± 0.4 mN, p 0.02) and pCa of 4.5 2.6 ± 0.6 versus 2.0 ± 0.5, p 0.002). In contrast, the force values of female fibers were lower at mean calcium concentrations compared to those of male fibers (at 5.5 and pCa of 6.0: 1.0 ± 0.3 mN versus 1.2 ± 0.5 mN, p 0.04; 0.61 ± 0.05 versus 0.88 ± 0.09, p 0.04). Calcium sensitivity was observed at pCa of 5.0 in females and pCa of 4.5 in males. Conclusion This study demonstrated that female fibers from patients exposed to chronic volume overload developed higher force values at a given calcium concentration compared to fibers from male patients. We assume that female patients might tap the full force potential, which is required when exposed to the highest calcium concentrations in our experimental cycle. The calcium sensitivity among genders was significantly different, with the results suggesting that males have higher calcium sensitivity and might compensate for lower force values at maximal calcium concentrations by a higher affinity for calcium. Hence, female patients with MR seem to work more “energy efficient”.
Collapse
Affiliation(s)
- C Bening
- Department of Thoracic, Cardiac and Thoracic Vascular Surgery, Medical Centre of the University Hospital Würzburg, Oberdürrbacherstrasse 6, 97080, Würzburg, Germany. .,Department of Cardiothoracic and Vascular Surgery, University Hospital Mainz, Mainz, Germany.
| | - K Hamouda
- Department of Thoracic, Cardiac and Thoracic Vascular Surgery, Medical Centre of the University Hospital Würzburg, Oberdürrbacherstrasse 6, 97080, Würzburg, Germany
| | - R Leyh
- Department of Thoracic, Cardiac and Thoracic Vascular Surgery, Medical Centre of the University Hospital Würzburg, Oberdürrbacherstrasse 6, 97080, Würzburg, Germany
| |
Collapse
|
11
|
Eadie AL, Simpson JA, Brunt KR. "Fibroblast" pharmacotherapy - Advancing the next generation of therapeutics for clinical cardiology. J Mol Cell Cardiol 2016; 94:176-179. [PMID: 27060557 DOI: 10.1016/j.yjmcc.2016.03.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Accepted: 03/31/2016] [Indexed: 10/22/2022]
Affiliation(s)
- Ashley L Eadie
- Department of Pharmacology, Dalhousie Medicine New Brunswick, Canada
| | - Jeremy A Simpson
- Department of Human Health & Nutritional Sciences, University of Guelph, Canada
| | - Keith R Brunt
- Department of Pharmacology, Dalhousie Medicine New Brunswick, Canada.
| |
Collapse
|
12
|
Li J, Jubair S, Janicki JS. Estrogen inhibits mast cell chymase release to prevent pressure overload-induced adverse cardiac remodeling. Hypertension 2014; 65:328-34. [PMID: 25403608 DOI: 10.1161/hypertensionaha.114.04238] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Estrogen regulation of myocardial chymase and chymase effects on cardiac remodeling are unknown. To test the hypothesis that estrogen prevents pressure overload-induced adverse cardiac remodeling by inhibiting mast cell (MC) chymase release, transverse aortic constriction or sham surgery was performed in 7-week-old intact and ovariectomized (OVX) rats. Three days before creating the constriction, additional groups of OVX rats began receiving 17β-estradiol, a chymase inhibitor, or a MC stabilizer. Left ventricular function, cardiomyocyte size, collagen volume fraction, MC density and degranulation, and myocardial and plasma chymase levels were assessed 18 days postsurgery. Aortic constriction resulted in ventricular hypertrophy in intact and OVX groups, whereas collagen volume fraction was increased only in OVX rats. Chymase protein content was increased by aortic constriction in the intact and OVX groups, with the magnitude of the increase being greater in OVX rats. MC density and degranulation, plasma chymase levels, and myocardial active transforming growth factor-β1 levels were increased by aortic constriction only in OVX rats. Estrogen replacement markedly attenuated the constriction-increased myocardial chymase, MC density and degranulation, plasma chymase, and myocardial active transforming growth factor-β1, as well as prevented ventricular hypertrophy and increased collagen volume fraction. Chymostatin attenuated the aortic constriction-induced ventricular hypertrophy and collagen volume fraction in the OVX rats similar to that achieved by estrogen replacement. Nedocromil yielded similar effects, except for the reduction of chymase content. We conclude that the estrogen-inhibited release of MC chymase is responsible for the cardioprotection against transverse aortic constriction-induced adverse cardiac remodeling.
Collapse
Affiliation(s)
- Jianping Li
- From the Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia
| | - Shaiban Jubair
- From the Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia
| | - Joseph S Janicki
- From the Department of Cell Biology and Anatomy, University of South Carolina School of Medicine, Columbia.
| |
Collapse
|
13
|
Sexual dimorphism of cardiovascular ischemia susceptibility is mediated by heme oxygenase. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:521563. [PMID: 24163720 PMCID: PMC3791627 DOI: 10.1155/2013/521563] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2013] [Accepted: 06/25/2013] [Indexed: 01/03/2023]
Abstract
We investigated the gender differences in heme-oxygenase (HO) enzyme, which produces endogenous vascular protective carbon monoxide (CO). We studied (1) the activity and expression of HO enzymes in the left ventricle (LV) and aorta, (2) basal increase in basal blood pressure provoked by arginine vasopressine (AVP) in vivo, (3) the heart perfusion induced by AVP, (4) the ST segment depression provoked by adrenaline and 30 seconds later phentolamine, and (5) the aorta ring contraction induced by AVP in female and male Wistar rats. We found that HO activity and the expression of HO-1 and HO-2 were increased in female rat aorta and LV. We demonstrated that the basal blood pressure and administration of AVP provoked blood pressure response are increased in the males; the female myocardium was less sensitive towards angina. Both differences could be aggravated by the inhibition of HO. The aorta rings were more susceptible towards vasoconstriction by AVP in males; isolated heart perfusion decrease was higher in males. The HO inhibition aggravated the heart perfusion in both sexes. In conclusion, the increased HO activity and expression in females might play a role in the sexual dimorphism of cardiovascular ischemia susceptibility during the reproductive age.
Collapse
|
14
|
Wattanapermpool J, de Tombe PP, Pak TR. Sex differences in health and disease: brain and heart connections--a special issue. Pflugers Arch 2013; 465:555-6. [PMID: 23588381 DOI: 10.1007/s00424-013-1279-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 04/03/2013] [Indexed: 11/28/2022]
|