1
|
Avalos-Borges EE, Jiménez-Coello M, Chan-Pérez JI, Cigarroa-Toledo N, Garg NJ, Guillermo-Cordero L, Segura-Correa JC, Ortega-Pacheco A. Congenital Transmission of Trypanosoma cruzi in Naturally Infected Dogs. Vector Borne Zoonotic Dis 2023; 23:465-474. [PMID: 37339451 PMCID: PMC10625467 DOI: 10.1089/vbz.2022.0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2023] Open
Abstract
Background: Congenital transmission (CT) of Trypanosoma cruzi in dogs has not been clearly demonstrated, even though dogs are important reservoirs of this agent. Materials and Methods: Seventeen late pregnant dogs seropositive for T. cruzi were selected, and a total of 84 fetuses were obtained. Blood and heart tissues from the fetuses and dams, and placental tissue from dam were collected. All tissues were analyzed by quantitative polymerase chain reaction (qPCR) for T. cruzi DNA (TcDNA) and inflammatory infiltrate and pathology by histological examination. CT was determined when physical, histological, or molecular evidence of T. cruzi was detected in blood or tissues of the fetuses. Results: A general transmission frequency of 59% was found, and 0.20 ± 0.24 of fetuses per litter were infected. Dams that were qPCR positive for TcDNA in cardiac tissue or blood displayed a transmission frequency of 100% and 67%, respectively. The highest parasite burden was noted in dams that were positive for TcDNA in both blood (82E-01 ± 1.54E-01) and cardiac (5.28E+03 ± 8.85E+03) tissues. In fetuses, higher parasitic burden in blood and cardiac tissue was found in those carried by dams that were seropositive and qPCR positive for TcDNA in cardiac tissue and blood. No amastigote nests were recorded in the cardiac tissue of fetuses in the histopathological studies, but typical lesions of T. cruzi infection were identified in all fetuses where CT occurred. Conclusions: CT of T. cruzi occurred at a high frequency in naturally infected pregnant dogs from the endemic areas.
Collapse
Affiliation(s)
- Eduardo E. Avalos-Borges
- Doctorado Institucional en Ciencias Agropecuarias, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Mexico
| | - Matilde Jiménez-Coello
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Mexico
| | - Jose I. Chan-Pérez
- Centro de Investigaciones Regionales “Dr Hideyo Noguchi,” Universidad Autónoma de Yucatán, Mérida, Mexico
| | - Nohemi Cigarroa-Toledo
- Centro de Investigaciones Regionales “Dr Hideyo Noguchi,” Universidad Autónoma de Yucatán, Mérida, Mexico
| | - Nisha J. Garg
- Department of Microbiology & Immunology, University of Texas Medical Branch, Galveston, Texas, USA
| | - Leonardo Guillermo-Cordero
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Mexico
| | - Jose C. Segura-Correa
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Mexico
| | - Antonio Ortega-Pacheco
- Departamento de Salud Animal y Medicina Preventiva, Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Yucatán, Mérida, Mexico
| |
Collapse
|
2
|
Abstract
Relevant research data shows that there is a certain degree of energy metabolism imbalance in highland residents. Protein phosphatase 4 (PP4) has been found as a new factor in the regulation of sugar and lipid metabolism. Here, we investigate the differential expression of PP4 at a simulated altitude of 4,500 m in the heart, lung, and brain tissues of rats. A hypoxic plateau rat model was established using an animal decompression chamber. A blood routine test was performed by an animal blood cell analyzer on rats cultured for different hypoxia periods at 4,500 m above sea level. Quantitative polymerase chain reaction (qPCR) and western blot were used to detect the changes of protein phosphatase 4 catalytic subunit (PP4C) gene and protein in heart, lung, and brain tissues. The PP4C gene with the highest expression level found in rats slowly entering the high altitude area (20 m-2200 m-7 d-4500 m-3 d) was about twice as high as the low elevation group (20 m above sea level). The simulated high-altitude hypoxia induced an increase of PP4C expression level in all tissues, and the expression in the lung tissue was twice as expressed as heart and brain tissue at high altitude (P < 0.05). These results suggest that the PP4 phosphatase complex is ubiquitously expressed in rat tissues and likely involved in adaptation to or disease associated with high-altitude hypoxia.
Collapse
Affiliation(s)
- Yanyan Ma
- Central Laboratory, Affiliated Hospital of Qinghai University, Tongren Road 29, Qinghai Province; Medical College of Qinghai University, Xining, Qinghai Province, China
| | - Jing Hou
- Central Laboratory, Affiliated Hospital of Qinghai University, Tongren Road 29, Qinghai Province, China
| | - Dengliang Huang
- Central Laboratory, Affiliated Hospital of Qinghai University, Tongren Road 29, Qinghai Province, China
| | - Yaogang Zhang
- Central Laboratory, Affiliated Hospital of Qinghai University, Tongren Road 29, Qinghai Province, China
| | - Zhe Liu
- Central Laboratory, Affiliated Hospital of Qinghai University, Tongren Road 29, Qinghai Province, China
| | - Meiyuan Tian
- Central Laboratory, Affiliated Hospital of Qinghai University, Tongren Road 29, Qinghai Province; Medical College of Qinghai University, Xining, Qinghai Province, China
| |
Collapse
|
3
|
Ai L, Binek A, Kreimer S, Ayres M, Stotland A, Van Eyk JE. High-Field Asymmetric Waveform Ion Mobility Spectrometry: Practical Alternative for Cardiac Proteome Sample Processing. J Proteome Res 2023; 22:2124-2130. [PMID: 37040897 PMCID: PMC10243111 DOI: 10.1021/acs.jproteome.3c00027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Indexed: 04/13/2023]
Abstract
Heart tissue sample preparation for mass spectrometry (MS) analysis that includes prefractionation reduces the cellular protein dynamic range and increases the relative abundance of nonsarcomeric proteins. We previously described "IN-Sequence" (IN-Seq) where heart tissue lysate is sequentially partitioned into three subcellular fractions to increase the proteome coverage more than a single direct tissue analysis by mass spectrometry. Here, we report an adaptation of the high-field asymmetric ion mobility spectrometry (FAIMS) coupled to mass spectrometry, and the establishment of a simple one step sample preparation coupled with gas-phase fractionation. The FAIMS approach substantially reduces manual sample handling, significantly shortens the MS instrument processing time, and produces unique protein identification and quantification approximating the commonly used IN-Seq method in less time.
Collapse
Affiliation(s)
- Lizhuo Ai
- Department
of Biomedical Sciences, Cedars-Sinai Medical
Center, Los Angeles, California 90048, United States
- Advanced
Clinical Biosystems Research Institute, Smidt Heart institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| | - Aleksandra Binek
- Advanced
Clinical Biosystems Research Institute, Smidt Heart institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| | - Simion Kreimer
- Advanced
Clinical Biosystems Research Institute, Smidt Heart institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| | - Matthew Ayres
- Advanced
Clinical Biosystems Research Institute, Smidt Heart institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| | - Aleksandr Stotland
- Advanced
Clinical Biosystems Research Institute, Smidt Heart institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| | - Jennifer E. Van Eyk
- Department
of Biomedical Sciences, Cedars-Sinai Medical
Center, Los Angeles, California 90048, United States
- Advanced
Clinical Biosystems Research Institute, Smidt Heart institute, Cedars-Sinai Medical Center, Los Angeles, California 90048, United States
| |
Collapse
|
4
|
Abstract
Despite numerous advances in treatments for cardiovascular disease, heart failure (HF) remains the leading cause of death worldwide. A significant factor contributing to the progression of cardiovascular diseases into HF is the loss of functioning cardiomyocytes. The recent growth in the field of cardiac tissue engineering has the potential to not only reduce the downstream effects of injured tissues on heart function and longevity but also re-engineer cardiac function through regeneration of contractile tissue. One leading strategy to accomplish this is via a cellularized patch that can be surgically implanted onto a diseased heart. A key area of this field is the use of tissue scaffolds to recapitulate the mechanical and structural environment of the native heart and thus promote engineered myocardium contractility and function. While the strong mechanical properties and anisotropic structural organization of the native heart can be largely attributed to a robust extracellular matrix, similar strength and organization has proven to be difficult to achieve in cultured tissues. Polycaprolactone (PCL) is an emerging contender to fill these gaps in fabricating scaffolds that mimic the mechanics and structure of the native heart. In the field of cardiovascular engineering, PCL has recently begun to be studied as a scaffold for regenerating the myocardium due to its facile fabrication, desirable mechanical, chemical, and biocompatible properties, and perhaps most importantly, biodegradability, which make it suitable for regenerating and re-engineering function to the heart after disease or injury. This review focuses on the application of PCL as a scaffold specifically in myocardium repair and regeneration and outlines current fabrication approaches, properties, and possibilities of PCL incorporation into engineered myocardium, as well as provides suggestions for future directions and a roadmap toward clinical translation of this technology.
Collapse
Affiliation(s)
- Phillip R Schmitt
- Center for Biomedical Engineering, School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Kiera D Dwyer
- Center for Biomedical Engineering, School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| | - Kareen L K Coulombe
- Center for Biomedical Engineering, School of Engineering, Brown University, Providence, Rhode Island 02912, United States
| |
Collapse
|
5
|
Jacquot Y, Kampa M, Lindsey SH. Editorial: GPER: Control and Functions. Front Endocrinol (Lausanne) 2021; 12:794344. [PMID: 34912301 PMCID: PMC8666656 DOI: 10.3389/fendo.2021.794344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 10/22/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Yves Jacquot
- CiTCoM, CNRS UMR 8038, INSERM U1268, Faculté de Pharmacie de Paris, Université de Paris, Paris, France
| | - Marilena Kampa
- Laboratory of Experimental Endocrinology, School of Medicine, University of Crete, Heraklion, Greece
| | - Sarah H. Lindsey
- Department of Pharmacology, Tulane University, New Orleans, LA, United States
| |
Collapse
|
6
|
Quadri F, Soman SS, Vijayavenkataraman S. Progress in cardiovascular bioprinting. Artif Organs 2021; 45:652-664. [PMID: 33432583 DOI: 10.1111/aor.13913] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/13/2020] [Accepted: 01/04/2021] [Indexed: 12/12/2022]
Abstract
Cardiovascular disease has been the leading cause of death globally for the past 15 years. Following a major cardiac disease episode, the ideal treatment would be the replacement of the damaged tissue, due to the limited regenerative capacity of cardiac tissues. However, we suffer from a chronic organ donor shortage which causes approximately 20 people to die each day waiting to receive an organ. Bioprinting of tissues and organs can potentially alleviate this burden by fabricating low cost tissue and organ replacements for cardiac patients. Clinical adoption of bioprinting in cardiovascular medicine is currently limited by the lack of systematic demonstration of its effectiveness, high costs, and the complexity of the workflow. Here, we give a concise review of progress in cardiovascular bioprinting and its components. We further discuss the challenges and future prospects of cardiovascular bioprinting in clinical applications.
Collapse
Affiliation(s)
- Faisal Quadri
- Division of Science, New York University Abu Dhabi, Abu Dhabi, UAE
| | - Soja Saghar Soman
- Division of Engineering, New York University Abu Dhabi, Abu Dhabi, UAE
| | - Sanjairaj Vijayavenkataraman
- Division of Engineering, New York University Abu Dhabi, Abu Dhabi, UAE.,Department of Mechanical and Aerospace Engineering, Tandon School of Engineering, New York University, Brooklyn, NY, USA
| |
Collapse
|
7
|
Abstract
Biomaterials dominate the field of cardiovascular therapeutics, a multitude of which have been used to repair and replace injured heart tissue. This field has evolved beyond the simple selection of compatible materials and now focuses on the rational design of controlled structures that integrate with the cardiovascular system. However, the compatibility of these materials with the blood presents a major limitation to their clinical application. In this context, surface modification strategies can enhance blood compatibility and several recent advances in this area have emerged. This review summarizes the recent applications of biomaterials in cardiovascular therapies, the improvements in their biocompatibility and the surface modification technologies that have the potential to improve clinical outcomes.
Collapse
Affiliation(s)
- Xun-Hong Xu
- Emergency Department, Chun'an First People's Hospital, Zhejiang Provincial People's Hospital Chun'an Branch, Hangzhou 311700, Zhejiang Province, China
| | - Xue Yang
- Key Laboratory of Tumor Molecular Diagnosis & Individualized Medicine of Zhejiang Province, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China.,Clinical Research Institute, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Cheng-Gen Zheng
- Department of Cardiology, Chun'an First People's Hospital, Zhejiang Provincial People's Hospital Chun'an Branch, Hangzhou 311700, Zhejiang Province, China
| | - Yong Cui
- Department of Cardiothoracic Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| |
Collapse
|
8
|
Reichardt M, Töpperwien M, Khan A, Alves F, Salditt T. Fiber orientation in a whole mouse heart reconstructed by laboratory phase-contrast micro-CT. J Med Imaging (Bellingham) 2020; 7:023501. [PMID: 32206684 PMCID: PMC7055497 DOI: 10.1117/1.jmi.7.2.023501] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 02/18/2020] [Indexed: 12/14/2022] Open
Abstract
Purpose: We present a phase-contrast x-ray tomography study of wild type C57BL/6 mouse hearts as a nondestructive approach to the microanatomy on the scale of the entire excised organ. Based on the partial coherence at a home-built phase-contrast μ-CT setup installed at a liquid metal jet source, we exploit phase retrieval and hence achieve superior image quality for heart tissue, almost comparable to previous synchrotron data on the whole organ scale. Approach: In our work, different embedding methods and heavy metal-based stains have been explored. From the tomographic reconstructions, quantitative structural parameters describing the three-dimensional (3-D) architecture have been derived by two different fiber tracking algorithms. The first algorithm is based on the local gradient of the reconstructed electron density. By performing a principal component analysis on the local structure-tensor of small subvolumes, the dominant direction inside the volume can be determined. In addition to this approach, which is already well established for heart tissue, we have implemented and tested an algorithm that is based on a local 3-D Fourier transform. Results: We showed that the choice of sample preparation influences the 3-D structure of the tissue, not only in terms of contrast but also with respect to the structural preservation. A heart prepared with the evaporation-of-solvent method was used to compare both algorithms. The results of structural orientation were very similar for both approaches. In addition to the determination of the fiber orientation, the degree of filament alignment and local thickness of single muscle fiber bundles were obtained using the Fourier-based approach. Conclusions: Phase-contrast x-ray tomography allows for investigating the structure of heart tissue with an isotropic resolution below 10 μm. The fact that this is possible with compact laboratory instrumentation opens up new opportunities for screening samples and optimizing sample preparation, also prior to synchrotron beamtimes. Further, results from the structural analysis can help in understanding cardiovascular diseases or can be used to improve computational models of the heart.
Collapse
Affiliation(s)
- Marius Reichardt
- University of Göttingen, Institute for X-Ray Physics, Göttingen, Germany
| | - Mareike Töpperwien
- University of Göttingen, Institute for X-Ray Physics, Göttingen, Germany
| | - Amara Khan
- Max Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Frauke Alves
- Max Planck Institute for Experimental Medicine, Göttingen, Germany.,University of Göttingen, Department of Hematology and Oncology, Göttingen, Germany
| | - Tim Salditt
- University of Göttingen, Institute for X-Ray Physics, Göttingen, Germany
| |
Collapse
|
9
|
Reichardt M, Töpperwien M, Khan A, Alves F, Salditt T. Fiber orientation in a whole mouse heart reconstructed by laboratory phase-contrast micro-CT. J Med Imaging (Bellingham) 2020; 7:023501. [PMID: 32206684 DOI: 10.1117/12.2527744] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Accepted: 02/18/2020] [Indexed: 05/23/2023] Open
Abstract
Purpose: We present a phase-contrast x-ray tomography study of wild type C57BL/6 mouse hearts as a nondestructive approach to the microanatomy on the scale of the entire excised organ. Based on the partial coherence at a home-built phase-contrast μ - CT setup installed at a liquid metal jet source, we exploit phase retrieval and hence achieve superior image quality for heart tissue, almost comparable to previous synchrotron data on the whole organ scale. Approach: In our work, different embedding methods and heavy metal-based stains have been explored. From the tomographic reconstructions, quantitative structural parameters describing the three-dimensional (3-D) architecture have been derived by two different fiber tracking algorithms. The first algorithm is based on the local gradient of the reconstructed electron density. By performing a principal component analysis on the local structure-tensor of small subvolumes, the dominant direction inside the volume can be determined. In addition to this approach, which is already well established for heart tissue, we have implemented and tested an algorithm that is based on a local 3-D Fourier transform. Results: We showed that the choice of sample preparation influences the 3-D structure of the tissue, not only in terms of contrast but also with respect to the structural preservation. A heart prepared with the evaporation-of-solvent method was used to compare both algorithms. The results of structural orientation were very similar for both approaches. In addition to the determination of the fiber orientation, the degree of filament alignment and local thickness of single muscle fiber bundles were obtained using the Fourier-based approach. Conclusions: Phase-contrast x-ray tomography allows for investigating the structure of heart tissue with an isotropic resolution below 10 μ m . The fact that this is possible with compact laboratory instrumentation opens up new opportunities for screening samples and optimizing sample preparation, also prior to synchrotron beamtimes. Further, results from the structural analysis can help in understanding cardiovascular diseases or can be used to improve computational models of the heart.
Collapse
Affiliation(s)
- Marius Reichardt
- University of Göttingen, Institute for X-Ray Physics, Göttingen, Germany
| | - Mareike Töpperwien
- University of Göttingen, Institute for X-Ray Physics, Göttingen, Germany
| | - Amara Khan
- Max Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Frauke Alves
- Max Planck Institute for Experimental Medicine, Göttingen, Germany
- University of Göttingen, Department of Hematology and Oncology, Göttingen, Germany
| | - Tim Salditt
- University of Göttingen, Institute for X-Ray Physics, Göttingen, Germany
| |
Collapse
|
10
|
Zhang CY, Zhang H, Ren WG, Dong Y. [Pharmacokinetics of four phenolic acids from Danshen-Chuanxiong drug pair in plasma and heart tissue of rats by UPLC-MS/MS]. Zhongguo Zhong Yao Za Zhi 2019; 44:4257-4262. [PMID: 31872707 DOI: 10.19540/j.cnki.cjcmm.20190619.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study is to investigate the compatibility mechanism of Danshen-Chuanxiong drug pair on the pharmacokinetics of four phenolic acids. A UPLC-MS/MS method for quantitative determination of salvianolic acid B( Sal B),rosmarinic acid( RA),lithospermic acid( LA) and ferulic acid( FA) in plasma and heart tissue of rats was established. After single salvianolic acids and Chuanxiong-extract or combined intravenous infusion was given to rats,plasma samples and heart tissues in different time were collected. The chromatographic separation was performed on a BEH C18 column using 0. 15% formic acid-acetonitrile as mobile phase for gradient elution. A triple-quadrupole tandem mass spectrometry equipped with an electrospray ionization source was used as detector operating on multiple-reaction monitoring( MRM) scanning in negative ionization mode. Full validation of UPLC method including calibration curves,accuracy,precision,repeatability and matrix effect was investigated to comply with quantitative analysis requirements for biological samples. There were significant differences in the major pharmacokinetic parameters of Sal B,FA and RA for intravenous infusion of salvianolic acids and Chuanxiong-extract or combined in rat plasma. The AUC of Sal B and FA were increased above 40% and100%,respectively. Their Vd and CL were dropped evidently. t1/2 and Vd of RA increased above 130%. The concentration of four phenolic acids were all increased obviously in heart tissue comparing with single infusion. These results demonstrated that the compatibility mechanism of Danshen-Chuanxiong drug pair showed synergistic effect.
Collapse
Affiliation(s)
- Cui-Ying Zhang
- Guang'anmen Hospital,China Academy of Chinese Medical Sciences Beijing 100053,China
| | - Hong Zhang
- Guang'anmen Hospital,China Academy of Chinese Medical Sciences Beijing 100053,China Henan University of Traditional Chinese Medicine Zhengzhou 450003,China
| | - Wei-Guang Ren
- Guang'anmen Hospital,China Academy of Chinese Medical Sciences Beijing 100053,China
| | - Yu Dong
- Guang'anmen Hospital,China Academy of Chinese Medical Sciences Beijing 100053,China
| |
Collapse
|
11
|
Farré N, Jorba I, Torres M, Falcones B, Martí-Almor J, Farré R, Almendros I, Navajas D. Passive Stiffness of Left Ventricular Myocardial Tissue Is Reduced by Ovariectomy in a Post-menopause Mouse Model. Front Physiol 2018; 9:1545. [PMID: 30455648 PMCID: PMC6230582 DOI: 10.3389/fphys.2018.01545] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 10/15/2018] [Indexed: 12/11/2022] Open
Abstract
Background: Heart failure (HF) – a very prevalent disease with high morbidity and mortality – usually presents with diastolic dysfunction. Although post-menopause women are at increased risk of HF and diastolic dysfunction, poor attention has been paid to clinically and experimentally investigate this group of patients. Specifically, whether myocardial stiffness is affected by menopause is unknown. Aim: To investigate whether loss of female sexual hormones modifies the Young’s modulus (E) of left ventricular (LV) myocardial tissue in a mouse model of menopause induced by ovariectomy (OVX). Methods: After 6 months of bilateral OVX, eight mice were sacrificed, fresh LV myocardial strips were prepared (∼8 × 1 × 1 mm), and their passive stress–stretch relationship was measured. E was computed by exponential fitting of the stress–stretch relationship. Subsequently, to assess the relative role of cellular and extracellular matrix components in determining OVX-induced changes in E, the tissues strips were decellularized and subjected to the same stretching protocol to measure E. A control group of eight sham-OVX mice was simultaneously studied. Results: E (kPa; m ± SE) in OVX mice was ∼twofold lower than in controls (11.7 ± 1.8 and 22.1 ± 4.4, respectively; p < 0.05). No significant difference between groups was found in E of the decellularized tissue (31.4 ± 12.05 and 40.9 ± 11.5, respectively; p = 0.58). Conclusion: Loss of female sexual hormones in an OVX model induces a reduction in the passive stiffness of myocardial tissue, suggesting that active relaxation should play a counterbalancing role in diastolic dysfunction in post-menopausal women with HF.
Collapse
Affiliation(s)
- Núria Farré
- Heart Failure Unit, Department of Cardiology, Hospital del Mar, Barcelona, Spain.,Heart Diseases Biomedical Research Group, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain.,Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ignasi Jorba
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,Institute for Bioengineering of Catalonia - The Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Marta Torres
- Department of Pneumology, Hospital Clinic Barcelona, Barcelona, Spain.,CIBER de Enfermedades Respiratorias, Madrid, Spain
| | - Bryan Falcones
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,CIBER de Enfermedades Respiratorias, Madrid, Spain
| | - Julio Martí-Almor
- Heart Failure Unit, Department of Cardiology, Hospital del Mar, Barcelona, Spain.,Department of Medicine, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Ramon Farré
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,CIBER de Enfermedades Respiratorias, Madrid, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Spain
| | - Isaac Almendros
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,CIBER de Enfermedades Respiratorias, Madrid, Spain.,Institut d'Investigacions Biomediques August Pi i Sunyer, Barcelona, Spain
| | - Daniel Navajas
- Unitat Biofísica i Bioenginyeria, Facultat de Medicina, Universitat de Barcelona, Barcelona, Spain.,Institute for Bioengineering of Catalonia - The Barcelona Institute of Science and Technology, Barcelona, Spain.,CIBER de Enfermedades Respiratorias, Madrid, Spain
| |
Collapse
|
12
|
Atici E, Menevse E, Baltaci AK, Mogulkoc R. Both experimental hypothyroidism and hyperthyroidism increase cardiac irisin levels in rats. ACTA ACUST UNITED AC 2018; 119:32-35. [PMID: 29405728 DOI: 10.4149/bll_2018_007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Irisin is a newly discovered myokine and adipokine that increases total body energy expenditure. The aim of this study was to determine the effect of experimental hypothyroidism and hyperthyroidism on the levels of irisin in heart tissue in rats. The study was performed on the 40 male Sprague-Dawley rats. Experimental groups were designed as; Control, Hypothyroidism, Hypothyroidism+L-Thyroxine, Hyperthyroidism and Hyperthyroidism + PTU. Following 3 weeks experimental period, irisin levels were determined in heart tissues. Hypothyroidism group values of irisin were higher than in the control group, but lower than in the hyperthyroidism group. The hyperthyroidism group had the highest levels of cardiac irisin. The results of the study showed that the experimental hypothyroidism and hyperthyroidism increased the heart irisin levels, but the increase in the hyperthyroidism group was much higher than in the hypothyroidism group. However, treatment of hypothyroidism and hyperthyroidism corrected cardiac irisin levels (Fig. 1, Ref. 28).
Collapse
|
13
|
Chavez JD, Lee CF, Caudal A, Keller A, Tian R, Bruce JE. Chemical Crosslinking Mass Spectrometry Analysis of Protein Conformations and Supercomplexes in Heart Tissue. Cell Syst 2017; 6:136-141.e5. [PMID: 29199018 DOI: 10.1016/j.cels.2017.10.017] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 09/05/2017] [Accepted: 10/25/2017] [Indexed: 12/16/2022]
Abstract
While modern structural biology technologies have greatly expanded the size and type of protein complexes that can now be studied, the ability to derive large-scale structural information on proteins and complexes as they exist within tissues is practically nonexistent. Here, we demonstrate the application of crosslinking mass spectrometry to identify protein structural features and interactions in tissue samples, providing systems structural biology insight into protein complexes as they exist in the mouse heart. This includes insights into multiple conformational states of sarcomere proteins, as well as interactions among OXPHOS complexes indicative of supercomplex assembly. The extension of crosslinking mass spectrometry analysis into the realm of tissues opens the door to increasing our understanding of protein structures and interactions within the context of the greater biological system.
Collapse
Affiliation(s)
- Juan D Chavez
- Department of Genome Sciences, University of Washington, Seattle, WA 98105, USA
| | - Chi Fung Lee
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA; Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA 98105, USA; Mitochondria and Metabolism Center, University of Washington, Seattle, WA 98105, USA
| | - Arianne Caudal
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA; Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA 98105, USA; Mitochondria and Metabolism Center, University of Washington, Seattle, WA 98105, USA
| | - Andrew Keller
- Department of Genome Sciences, University of Washington, Seattle, WA 98105, USA
| | - Rong Tian
- Department of Bioengineering, University of Washington, Seattle, WA 98105, USA; Department of Anesthesiology and Pain Medicine, University of Washington, Seattle, WA 98105, USA; Mitochondria and Metabolism Center, University of Washington, Seattle, WA 98105, USA
| | - James E Bruce
- Department of Genome Sciences, University of Washington, Seattle, WA 98105, USA.
| |
Collapse
|
14
|
Oberholzer HM, Van Der Schoor C, Taute H, Bester MJ. A descriptive study to provide evidence of the teratogenic and cellular effects of sibutramine and ephedrine on cardiac- and liver-tissue of chick embryos. Microsc Res Tech 2015; 78:737-46. [PMID: 26138360 DOI: 10.1002/jemt.22539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 05/29/2015] [Accepted: 06/14/2015] [Indexed: 11/07/2022]
Abstract
Exposure to drugs during pregnancy is a major concern, as some teratogenic compounds can influence normal foetal development. Although the use of drugs during pregnancy should generally be avoided, exposure of the developing foetus to teratogens may occur unknowingly since these compounds may be hidden in products that are being marketed as "all natural." The aim of the current study was to investigate the possible teratogenic and cellular effects of sibutramine-a serotonin-norepinephrine reuptake inhibitor used in the treatment of obesity-on the heart and liver tissue of chick embryos. Ephedrine was used as a positive control. The chick embryo model was chosen because it has been used in studying developmental and experimental biology and teratology with great success. The embryos were exposed to three different concentrations of sibutramine and ephedrine respectively. The results obtained revealed that both compounds exhibited embryotoxicity when compared to the control groups. Liver and heart tissue of the exposed embryos was severely affected by these compounds in a dose-related manner. Morphology similar to that of muscle dystrophy was observed in the heart, where the muscle tissue was infiltrated by adipose and connective tissue. Severe liver steatosis was also noted. A more in-depth investigation into the molecular pathways involved might provide more information on the exact mechanism of toxicity of these products influencing embryonic development.
Collapse
Affiliation(s)
| | - Ciska Van Der Schoor
- Department of Anatomy, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - Helena Taute
- Department of Anatomy, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| | - Megan Jean Bester
- Department of Anatomy, Faculty of Health Sciences, University of Pretoria, Arcadia, South Africa
| |
Collapse
|
15
|
Joensen H, Grahl-Nielsen O. Distinction among North Atlantic cod Gadus morhua stocks by tissue fatty acid profiles. J Fish Biol 2014; 84:1904-1925. [PMID: 24890408 DOI: 10.1111/jfb.12407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Accepted: 03/14/2014] [Indexed: 06/03/2023]
Abstract
The fatty acid (FA) profiles of the white muscle and heart tissues of cod Gadus morhua from five locations, Faroe Bank, Faroe Plateau, North-West Iceland, Norway-Barents Sea and Denmark-Skagerrak, were population dependent. The interregional differences of FAs were significantly dissimilar (P < 0.01) in most cases. By way of a rapid and simple analytical method, the stock dependence and harvest location of individual G. morhua were chemometrically determined by multivariate principal component analysis. The difference among the stocks was correlated with the average water temperature at the harvest locations. It thus appears that the tissue FA profile is a phenotypic trait that is partly temperature driven.
Collapse
Affiliation(s)
- H Joensen
- Department of Science and Technology, University of the Faroe Islands, Nóatún 3, FO-100 Tórshavn, Faroe Islands
| | | |
Collapse
|