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Lichtenberger J, Côté E, Forney SD, Barrett KA, Ettinger SJ. Cardiac biomarker profiles in dogs with naturally occurring precapillary pulmonary hypertension. J Vet Cardiol 2024; 56:56-64. [PMID: 39321733 DOI: 10.1016/j.jvc.2024.08.007] [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: 01/24/2023] [Revised: 08/19/2024] [Accepted: 08/19/2024] [Indexed: 09/27/2024]
Abstract
INTRODUCTION/OBJECTIVES This study evaluated circulating amino-terminal pro-B-type natriuretic peptide (NT-proBNP), amino-terminal pro-A-type natriuretic peptide (NT-proANP), and cardiac troponin I (cTnI) concentrations in dogs with precapillary pulmonary hypertension (Pre-PH) and control dogs with respiratory clinical signs but no Pre-PH. ANIMALS Twenty-six dogs (17 affected, and 9 controls) were involved in the study. MATERIALS AND METHODS This was a sub-study of a large prospective single-center observational study. Dogs underwent blood sample collection, physical examination, and echocardiographic evaluation. Pre-PH was diagnosed when a calculated right ventricular-to-right atrial pressure gradient (RV:RA PG) measuring ≥40 mmHg was identified echocardiographically, barring right ventricular outflow obstruction and/or left-sided cardiac disease. RESULTS Two, nine, and six dogs had mild, moderate, and severe Pre-PH, respectively. Plasma concentrations of NT-proBNP, NT-proANP, and cTnI were significantly higher in the affected group than in the control group (P=0.020, P=0.009, P=0.011, respectively). There was a positive correlation between RV:RA PG and NT-proBNP (r = 0.52), NT-proANP (r = 0.54), and cTnI (r = 0.67) concentrations. DISCUSSION Pre-PH should be included in the differential diagnosis list of elevated cardiac biomarker concentrations in dogs with respiratory signs. STUDY LIMITATIONS Strict selection criteria reduced group sizes. There were rare missing data points. The diagnosis of Pre-PH was obtained from Doppler echocardiographic RV:RA PG. The disease process causing Pre-PH was not evaluated histopathologically. CONCLUSIONS Circulating cardiac biomarker concentrations are increased in dogs with Pre-PH and there is a positive correlation between RV:RA PG and NT-proBNP, NT-proANP, and cTnI concentrations.
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Affiliation(s)
- J Lichtenberger
- Department of Companion Animals, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, PE C1A 4P3, Canada.
| | - E Côté
- Department of Companion Animals, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, PE C1A 4P3, Canada
| | - S D Forney
- California Animal Hospital Veterinary Specialty Group, 1736 S Sepulveda Ave, Los Angeles, CA 90025, USA
| | - K A Barrett
- California Animal Hospital Veterinary Specialty Group, 1736 S Sepulveda Ave, Los Angeles, CA 90025, USA
| | - S J Ettinger
- California Animal Hospital Veterinary Specialty Group, 1736 S Sepulveda Ave, Los Angeles, CA 90025, USA
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Kachabi A, Colebank MJ, Chesler NC. Subject-specific one-dimensional fluid dynamics model of chronic thromboembolic pulmonary hypertension. Biomech Model Mechanobiol 2024; 23:469-483. [PMID: 38017302 PMCID: PMC10963496 DOI: 10.1007/s10237-023-01786-3] [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: 07/28/2023] [Accepted: 10/21/2023] [Indexed: 11/30/2023]
Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) develops due to the accumulation of blood clots in the lung vasculature that obstructs flow and increases pressure. The mechanobiological factors that drive progression of CTEPH are not understood, in part because mechanical and hemodynamic changes in the small pulmonary arteries due to CTEPH are not easily measurable. Using previously published hemodynamic measurements and imaging from a large animal model of CTEPH, we applied a subject-specific one-dimensional (1D) computational fluid dynamic (CFD) approach to investigate the impact of CTEPH on pulmonary artery stiffening, time-averaged wall shear stress (TAWSS), and oscillatory shear index (OSI) in extralobar (main, right, and left) pulmonary arteries and intralobar (distal to the extralobar) arteries. Our results demonstrate that CTEPH increases pulmonary artery wall stiffness and decreases TAWSS in extralobar and intralobar arteries. Moreover, CTEPH increases the percentage of the intralobar arterial network with both low TAWSS and high OSI, quantified by the novel parameter φ , which is related to thrombogenicity. Our analysis reveals a strong positive correlation between increases in mean pulmonary artery pressure (mPAP) and φ from baseline to CTEPH in individual subjects, which supports the suggestion that increased φ drives disease severity. This subject-specific experimental-computational framework shows potential as a predictor of the impact of CTEPH on pulmonary arterial hemodynamics and pulmonary vascular mechanics. By leveraging advanced modeling techniques and calibrated model parameters, we predict spatial distributions of flow and pressure, from which we can compute potential physiomarkers of disease progression. Ultimately, this approach can lead to more spatially targeted interventions that address the needs of individual CTEPH patients.
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Affiliation(s)
- Amirreza Kachabi
- Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA
| | - Mitchel J Colebank
- Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA
| | - Naomi C Chesler
- Edwards Lifesciences Foundation Cardiovascular Innovation and Research Center, Department of Biomedical Engineering, University of California, Irvine, Irvine, CA, USA.
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Kachabi A, Colebank MJ, Chesler N. Subject-specific one-dimensional fluid dynamics model of chronic thromboembolic pulmonary hypertension. RESEARCH SQUARE 2023:rs.3.rs-3214385. [PMID: 37577616 PMCID: PMC10418554 DOI: 10.21203/rs.3.rs-3214385/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) develops due to the accumulation of blood clots in the lung vasculature that obstruct flow and increase pressure. The mechanobiological factors that drive progression of CTEPH are not understood, in part because mechanical and hemodynamic changes in the pulmonary vasculature due to CTEPH are not easily measurable. Using previously published hemodynamic measurements and imaging from a large animal model of CTEPH, we developed a subject-specific one-dimensional (1D) computational fluid dynamic (CFD) models to investigate the impact of CTEPH on pulmonary artery stiffening, time averaged wall shear stress (TAWSS), and oscillatory shear index (OSI). Our results demonstrate that CTEPH increases pulmonary artery wall stiffness and decreases TAWSS in extralobar (main, right and left pulmonary arteries) and intralobar vessels. Moreover, CTEPH increases the percentage of the intralobar arterial network with both low TAWSS and high OSI. This subject-specific experimental-computational framework shows potential as a predictor of the impact of CTEPH on pulmonary arterial hemodynamics and pulmonary vascular mechanics. By leveraging advanced modeling techniques and calibrated model parameters, we predict spatial distributions of flow and pressure, from which we can compute potential physiomarkers of disease progression, including the combination of low mean wall shear stress with high oscillation. Ultimately, this approach can lead to more spatially targeted interventions that address the needs of individual CTEPH patients.
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Suzuki R, Yuchi Y, Saito T, Teshima T, Matsumoto H, Koyama H. Investigation of Beraprost Sodium on Cardiac Function and Hemodynamics in Canine Models of Chronic Pulmonary Hypertension. Front Vet Sci 2022; 9:876178. [PMID: 35498754 PMCID: PMC9048895 DOI: 10.3389/fvets.2022.876178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 03/21/2022] [Indexed: 01/02/2023] Open
Abstract
Pulmonary hypertension (PH) is a life-threatening disease in dogs characterized by increased pulmonary arterial pressure (PAP) and/or pulmonary vascular resistance. No study has evaluated the utility of Beraprost sodium (BPS) in dogs with PH. This study aimed to evaluate the effect of BPS on cardiac function and hemodynamics and examine the optimal dose of BPS in canine models of chronic embolic PH. In this prospective crossover study, three doses of BPS (5, 15, and 25 μg/kg, twice a day) were examined in eight canine models of chronic embolic PH. All model dogs underwent invasive PAP measurement, echocardiography, and non-invasive systemic blood pressure measurement before and after continuous administration of oral BPS for 1 week. No side effects of BPS were observed in any dog during the study. All doses of BPS significantly decreased systolic PAP and pulmonary vascular impedance. Additionally, systemic vascular impedance significantly decreased with 15 and 25 μg/kg of BPS. The right ventricular stroke volume and longitudinal strain significantly decreased with all doses of BPS. The left ventricular stroke volume and circumferential strain decreased with 15 μg/kg BPS. BPS was well-tolerated in this study. A dose-dependent vasodilating effect on pulmonary vessels was observed in canine models of chronic PH. Additionally, 15 μg/kg BPS showed a balanced vasodilating effect on systemic and pulmonary vessels. Furthermore, with a decrease in systemic and pulmonary vascular impedance, the left and right ventricular functions were significantly improved. Our results suggest that BPS may be useful in the treatment of canine PH.
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Yuchi Y, Suzuki R, Kanno H, Teshima T, Matsumoto H, Koyama H. Right Ventricular Myocardial Adaptation Assessed by Two-Dimensional Speckle Tracking Echocardiography in Canine Models of Chronic Pulmonary Hypertension. Front Vet Sci 2021; 8:727155. [PMID: 34485446 PMCID: PMC8415444 DOI: 10.3389/fvets.2021.727155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 07/22/2021] [Indexed: 11/13/2022] Open
Abstract
Background: Pulmonary hypertension (PH) is a life-threatening disease in dogs characterized by an increase in pulmonary arterial pressure (PAP) and/or pulmonary vascular resistance. Right ventricle adapts to its pressure overload through various right ventricular (RV) compensative mechanisms: adaptive and maladaptive remodeling. The former is characterized by concentric hypertrophy and increased compensatory myocardial contractility, whereas the latter is distinguished by eccentric hypertrophy associated with impaired myocardial function. Objectives: To evaluate the RV adaptation associated with the increase of PAP using two-dimensional speckle tracking echocardiography. Animals: Seven experimentally induced PH models. Methods: Dogs were anesthetized and then a pulmonary artery catheter was placed via the right jugular vein. Canine models of PH were induced by the repeated injection of microspheres through the catheter and monitored pulmonary artery pressure. Dogs were performed echocardiography and hemodynamic measurements in a conscious state when baseline and systolic PAP (sPAP) rose to 30, 40, 50 mmHg, and chronic phase. The chronic phase was defined that the sPAP was maintained at 50 mmHg or more for 4 weeks without injection of microspheres. Results: Pulmonary artery to aortic diameter ratio, RV area, end-diastolic RV wall thickness, and RV myocardial performance index were significantly increased in the chronic phase compared with that in the baseline. Tricuspid annular plane systolic excursion was significantly decreased in the chronic phase compared with that in the baseline. The RV longitudinal strain was significantly decreased in the sPAP30 phase, increased in the sPAP40 and sPAP50 phases, and decreased in the chronic phase. Conclusions: Changes in two-dimensional speckle tracking echocardiography-derived RV longitudinal strain might reflect the intrinsic RV myocardial contractility during the PH progression, which could not be detected by conventional echocardiographic parameters.
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Affiliation(s)
- Yunosuke Yuchi
- Laboratory of Veterinary Internal Medicine, Faculty of Veterinary Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Ryohei Suzuki
- Laboratory of Veterinary Internal Medicine, Faculty of Veterinary Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Haruka Kanno
- Laboratory of Veterinary Internal Medicine, Faculty of Veterinary Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Takahiro Teshima
- Laboratory of Veterinary Internal Medicine, Faculty of Veterinary Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Hirotaka Matsumoto
- Laboratory of Veterinary Internal Medicine, Faculty of Veterinary Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Japan
| | - Hidekazu Koyama
- Laboratory of Veterinary Internal Medicine, Faculty of Veterinary Science, School of Veterinary Medicine, Nippon Veterinary and Life Science University, Musashino, Japan
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Kriechbaum SD, Scherwitz L, Wiedenroth CB, Rudolph F, Wolter JS, Haas M, Fischer-Rasokat U, Rolf A, Hamm CW, Mayer E, Guth S, Keller T, Konstantinides SV, Lankeit M, Liebetrau C. Mid-regional pro-atrial natriuretic peptide and copeptin as indicators of disease severity and therapy response in CTEPH. ERJ Open Res 2020; 6:00356-2020. [PMID: 33263045 PMCID: PMC7682678 DOI: 10.1183/23120541.00356-2020] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Accepted: 08/18/2020] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Chronic thromboembolic pulmonary hypertension (CTEPH) leads to right heart failure. Pulmonary endarterectomy (PEA) or balloon pulmonary angioplasty (BPA) restore pulmonary haemodynamics and allow cardiac recovery. This study examined the relationship of copeptin and mid-regional pro-atrial natriuretic peptide (MR-proANP) levels to disease severity and therapy response. METHODS This observational cohort study included 125 patients (55 PEA/70 BPA) who underwent treatment and completed a 6-/12-month follow-up. Biomarkers, measured at baseline, prior to every BPA and at follow-up, were compared to 1) severe disease at baseline (right atrial pressure (RAP) ≥8 mmHg and cardiac index ≤2.4 L·min-1·m-2) and 2) optimal therapy response (no persistent pulmonary hypertension combined with a normalised RAP (mean PAP ≤25 mmHg, pulmonary vascular resistance (PVR) ≤3 WU and RAP ≤6 mmHg) or a reduction in mean PAP ≥25%, PVR ≥35% and RAP ≥25%). RESULTS Severely diseased patients had higher levels of MR-proANP (320 (246-527) pmol·L-1 versus 133 (82-215) pmol·L-1; p=0.001) and copeptin (12.7 (7.3-20.6) pmol·L-1 versus 6.8 (4.4-12.8) pmol·L-1; p=0.015) at baseline than the rest of the cohort. At baseline, MR-proANP (area under the curve (AUC) 0.91; cut-off value 227 pmol·L-1; OR 56, 95% CI 6.9-454.3) and copeptin (AUC 0.70; cut-off value 10.9 pmol·L-1; OR 1.5, 95% CI 1.2-1.9) identified severely diseased patients. After PEA/BPA, levels of MR-proANP (99 (58-145) pmol·L-1; p<0.001) and copeptin (6.3 (3.7-12.6) pmol·L-1; p=0.009) decreased and indicated optimal therapy response (MR-proANP <123 pmol·L-1 (AUC 0.70) and copeptin <10.1 pmol·L-1 (AUC 0.58)). CONCLUSION MR-proANP and copeptin levels are affected in CTEPH and decrease after therapy. MR-proANP identifies a severe disease status and optimal therapy response.
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Affiliation(s)
- Steffen D. Kriechbaum
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
| | - Lillith Scherwitz
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
| | | | - Felix Rudolph
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
| | - Jan-Sebastian Wolter
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
| | - Moritz Haas
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
| | - Ulrich Fischer-Rasokat
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
| | - Andreas Rolf
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
- Justus Liebig University Giessen, Medical Clinic I, Division of Cardiology, Giessen, Germany
| | - Christian W. Hamm
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
- Justus Liebig University Giessen, Medical Clinic I, Division of Cardiology, Giessen, Germany
| | - Eckhard Mayer
- Kerckhoff Heart and Thorax Center, Dept of Thoracic Surgery, Bad Nauheim, Germany
| | - Stefan Guth
- Kerckhoff Heart and Thorax Center, Dept of Thoracic Surgery, Bad Nauheim, Germany
| | - Till Keller
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
- Justus Liebig University Giessen, Medical Clinic I, Division of Cardiology, Giessen, Germany
| | - Stavros V. Konstantinides
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
- Dept of Cardiology, Democritus University of Thrace, Alexandroupolis, Greece
| | - Mareike Lankeit
- Center for Thrombosis and Hemostasis, University Medical Center of the Johannes Gutenberg University, Mainz, Germany
- Dept of Internal Medicine and Cardiology, Campus Virchow Klinikum (CVK), Charité - University Medicine Berlin, Berlin, Germany
- These authors contributed equally
| | - Christoph Liebetrau
- Kerckhoff Heart and Thorax Center, Dept of Cardiology, Bad Nauheim, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Rhine-Main, Frankfurt am Main, Germany
- Justus Liebig University Giessen, Medical Clinic I, Division of Cardiology, Giessen, Germany
- These authors contributed equally
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Acute effects of intravenous pimobendan administration in dog models of chronic precapillary pulmonary hypertension. J Vet Cardiol 2020; 32:16-27. [PMID: 33080489 DOI: 10.1016/j.jvc.2020.09.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 09/03/2020] [Accepted: 09/14/2020] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Pulmonary hypertension (PH) is a progressive and potentially life-threatening disease. Several drugs are used for the treatment of dogs with precapillary PH. Pimobendan is an inotropic drug with phosphodiesterase 3 inhibitory and calcium-sensitizing effects. Pimobendan administration improved right ventricular (RV) function and lowered pulmonary arterial pressure in some human patients with precapillary PH. However, the efficacy of pimobendan in dogs with precapillary PH is unknown. ANIMALS, MATERIAL, AND METHODS An implantable port device was percutaneously placed in the cranial vena cava of five laboratory beagles. Chronic embolic precapillary PH was induced via the repeated injection of microspheres every 1-2 days. Microsphere injection was continued until systolic pulmonary arterial pressure reached 50 mmHg. Right heart catheterization and echocardiography were performed at baseline and after injections of placebo and pimobendan (0.15 mg/kg). RESULTS Repeated injections of microspheres caused an increase in pulmonary vascular resistance, a decrease in stroke volume, RV dilation, left ventricular (LV) and RV dysfunction, and RV dyssynchrony as assessed using echocardiography. Compared with placebo, pimobendan improved LV and RV function based on the LV Tei index from 0.48 to 0.38 (p=0.002) and the RV Tei index from 0.76 to 0.61 (p=0.008), as well as the stroke volume index from 29.4 to 36.7 ml/m2 (p=0.012), respectively. CONCLUSIONS In dog models of chronic PH, intravenous pimobendan effectively improved RV and LV function and increased stroke volume. However, pimobendan administration did not decrease pulmonary arterial pressure or produce hypotension.
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Ogawa M, Ishizaka M, Akabane R, Sakatani A, Nagakawa M, Miyakawa H, Miyagawa Y, Takemura N. Evaluation of the Autonomic Nervous System in a Canine Model of Chronic Embolic Pulmonary Hypertension. Vet Res Commun 2020; 44:73-81. [PMID: 32500313 DOI: 10.1007/s11259-020-09774-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 04/30/2020] [Indexed: 11/27/2022]
Abstract
BACKGROUND Sildenafil improves autonomic dysfunction caused by pulmonary hypertension (PH) in humans, but its effect is unknown in dogs with PH. This prospective study aimed to evaluate the autonomic nervous system function of a canine model of chronic embolic PH (CEPH) and the autonomic nervous system function of a canine model of CEPH in which sildenafil was administered. METHODS This study used five clinically healthy female beagle dogs. Evaluation parameters included hemodynamic parameters, heart rate (HR) and heart rate variability (HRV). Each evaluation parameter was compared before and after creating the CEPH model (before, BL; after, CEPHBL) and between the CEPHBL model and after the administration of sildenafil (1 mg/kg, BID) in the CEPH model dogs (CEPHSil). RESULTS In the CEPHBL model, the hemodynamic parameters indicated cardiac hypofunction, and HR was significantly increased and HRV was significantly decreased compared with BL. Further, in the CEPHSil model, the hemodynamic parameters suggested improvement in cardiac function, and HRV was significantly increased. CONCLUSIONS From the results of the CEPH model dogs, autonomic dysfunction was shown to occur in PH dogs. In addition, the administration of 1 mg/kg of sildenafil to CEPH model dogs may improve autonomic dysfunction.
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Affiliation(s)
- Mizuki Ogawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan.
| | - Mio Ishizaka
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - Ryota Akabane
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - Atsushi Sakatani
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - Masayoshi Nagakawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - Hirosumi Miyakawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - Yuichi Miyagawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
| | - Naoyuki Takemura
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo, 180-8602, Japan
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Akabane R, Shimano S, Sakatani A, Ogawa M, Nagakawa M, Miyakawa H, Miyagawa Y, Takemura N. Relationship between right heart echocardiographic parameters and invasive pulmonary artery pressures in canine models of chronic embolic pulmonary hypertension. J Vet Med Sci 2019; 81:1485-1491. [PMID: 31484835 PMCID: PMC6863729 DOI: 10.1292/jvms.19-0350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Basic information related to the association between right heart echocardiographic
parameters and invasive pulmonary artery pressure (PAP) in dogs with pulmonary hypetension
(PH) is scarce. The aim of this study was to examine the association between conventional
right heart echocardiographic parameters and invasive PAP by right heart catheterization
(RHC) before and after PH. Five female beagle dogs regarded as clinically healthy were
used. Echocardiography and RHC were conducted before and after creating chronic embolic
pulmonary hypertension (CEPH) models. The acceleration time to ejection time ratio in
pulmonary artery flow profile (AT/ET), the ratio of the pulmonary artery and aortic
diameter in diastole (PA/Ao), the right pulmonary artery distensibility index by M-mode
method (RPAD M-mode), the normalized right ventricular internal diameter in
diastole (RVIDdn), and the normalized tricuspid annular plane systolic excursion (TAPSEn)
were correlated with the invasive systolic PAP (sPAP), mean PAP (mPAP) and diastolic PAP
(dPAP). Multiple linear regression analysis identified AT/ET and RVIDdn as independent
predictors of sPAP, PA/Ao and RVIDdn as independent predictors of mPAP, and PA/Ao and RPAD
M-mode as independent predictors of dPAP. AT/ET and PA/Ao had high
sensitivity and specificity for predicting CEPH. In conclusion, AT/ET, PA/Ao, RPAD
M-mode, RVIDdn and TAPSEn were significantly correlated with invasive PAP and
alterations in PA/Ao or AT/ET might enable clinicians to predict PH, even if tricuspid
regurgitation is not observed.
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Affiliation(s)
- Ryota Akabane
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Shotaro Shimano
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Atsushi Sakatani
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Mizuki Ogawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Masayoshi Nagakawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Hirosumi Miyakawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Yuichi Miyagawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
| | - Naoyuki Takemura
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
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Mulchrone A, Kellihan HB, Forouzan O, Hacker TA, Bates ML, Francois CJ, Chesler NC. A Large Animal Model of Right Ventricular Failure due to Chronic Thromboembolic Pulmonary Hypertension: A Focus on Function. Front Cardiovasc Med 2019; 5:189. [PMID: 30687717 PMCID: PMC6333696 DOI: 10.3389/fcvm.2018.00189] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 12/13/2018] [Indexed: 11/13/2022] Open
Abstract
Chronic thromboembolic pulmonary hypertension (CTEPH) is a debilitating disease that progresses to right ventricular (RV) failure and death if left untreated. Little is known regarding the progression of RV failure in this disease, greatly limiting effective prognoses, and therapeutic interventions. Large animal models enable the use of clinical techniques and technologies to assess progression and diagnose failure, but the existing large animal models of CTEPH have not been shown to replicate the functional consequences of the RV, i.e., RV failure. Here, we created a canine embolization model of CTEPH utilizing only microsphere injections, and we used a combination of right heart catheterization (RHC), echocardiography (echo), and magnetic resonance imaging (MRI) to quantify RV function. Over the course of several months, CTEPH led to a 6-fold increase in pulmonary vascular resistance (PVR) in four adult, male beagles. As evidenced by decreased cardiac index (0.12 ± 0.01 v. 0.07 ± 0.01 [L/(min*kg)]; p < 0.05), ejection fraction (0.48 ± 0.02 v. 0.31 ± 0.02; p < 0.05), and ventricular-vascular coupling ratio (0.95 ± 0.09 v. 0.45 ± 0.05; p < 0.05), as well as decreased tricuspid annular plane systolic excursion (TAPSE) (1.37 ± 0.06 v. 0.86 ± 0.05 [cm]; p < 0.05) and increased end-diastolic volume index (2.73 ± 0.06 v. 2.98 ± 0.02 [mL/kg]; p < 0.05), the model caused RV failure. The ability of this large animal CTEPH model to replicate the hemodynamic consequences of the human disease suggests that it could be utilized for future studies to gain insight into the pathophysiology of CTEPH development, following further optimization.
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Affiliation(s)
- Ashley Mulchrone
- Department of Biomedical Engineering, Univeristy of Wisconsin-Madison, Madison, WI, United States
| | - Heidi B Kellihan
- School of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Omid Forouzan
- Department of Biomedical Engineering, Univeristy of Wisconsin-Madison, Madison, WI, United States
| | - Timothy A Hacker
- Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States
| | - Melissa L Bates
- Department of Health and Human Physiology, University of Iowa, Iowa City, IA, United States.,Department of Pediatrics, University of Iowa, Iowa City, IA, United States
| | | | - Naomi C Chesler
- Department of Biomedical Engineering, Univeristy of Wisconsin-Madison, Madison, WI, United States.,Department of Medicine, University of Wisconsin-Madison, Madison, WI, United States
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11
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de Lima GV, Ferreira FDS. N-terminal-pro brain natriuretic peptides in dogs and cats: A technical and clinical review. Vet World 2017; 10:1072-1082. [PMID: 29062197 PMCID: PMC5639106 DOI: 10.14202/vetworld.2017.1072-1082] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 08/18/2017] [Indexed: 01/16/2023] Open
Abstract
Biomarkers are quantitative indicators of biological processes performed by an organ or system. In recent years, natriuretic peptides (NPs) have emerged as important tools in the diagnosis and therapeutic monitoring of heart diseases. Research has shown that serum and plasma levels of N-terminal pro brain NP (NT-proBNP) in dogs and cats are the only biomarkers that afford to diagnose and monitor congestive processes and, indirectly, the myocardial function of small animals. The present review discusses the peer-reviewed specialized literature about NT-proBNP and presents and compares the potential clinical applications of this NP in veterinary medicine of small animals, considering diagnosis, follow-up, and prognosis of myocardial or systemic diseases. The relevance of NT-proBNP is associated with sample stability, easy determination in laboratory, sensitivity, accuracy, and the possibility to analyze myocardial function. These advantages are specially important when NT-proBNP is compared with other cardiac biomarkers, mostly those that indicate the integrity of the myocardial cell. Fast NT-proBNP assays are marketed today and may be used in association with complementary tests. Together, these methods are an important source of information in differential diagnosis of heart and lung diseases as well in the early diagnosis of cardiopathy in dogs and cats, proving valuable tools in treatment and prognosis.
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12
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Deng C, Wu D, Yang M, Chen Y, Wang C, Zhong Z, Lian N, Chen H, Wu S. Expression of tissue factor and forkhead box transcription factor O-1 in a rat model for chronic thromboembolic pulmonary hypertension. J Thromb Thrombolysis 2017; 42:520-8. [PMID: 27542118 DOI: 10.1007/s11239-016-1413-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Few reports have examined tissue factor (TF) and forkhead box transcription factor O-1 (FoxO1) expression in chronic thromboembolic pulmonary hypertension (CTEPH) animal models. To investigate the role of TF and FoxO1 and their interactions during CTEPH pathogenesis in a rat model. Autologous blood clots were repeatedly injected into the pulmonary arteries through right jugular vein to induce a rat model of CTEPH. Hemodynamic parameters, histopathology, and TF and FoxO1expression levels were detected. The mean pulmonary arterial pressure (mPAP), pulmonary vascular resistance and vessel wall area/total area (WA/TA) ratio in the experiment group increased significantly than sham group (P < 0.05). The cardiac output in the 1-, 2-, and 4-week groups decreased significantly (P < 0.05) when compared to sham group. TF mRNA expression levels in the experiment group increased significantly than sham group (P < 0.05). FoxO1 mRNA and protein expression levels were lower in the experiment group than sham group (P < 0.05). The mPAP had a positive correlation with WA/TA ratio (r = 0.45, P = 0.01). TF mRNA expression had a positive correlation with WA/TA ratio (r = 0.374, P = 0.035) and a positive correlation with mPAP (r = 0.48, P= 0.005). FoxO1 mRNA expression had a negative correlation trend with the WA/TA ratio (r = -0.297, P = 0.099) and a negative correlation trend with mPAP (r = -0.34, P = 0.057). TF mRNA expression had a negative correlation with FoxO1 mRNA expression (r = -0.62, P < 0.001). A rat model of CTEPH can be successfully established by the injection of autologous blood clots into the pulmonary artery. TF and FoxO1 may play a key role in vascular remodeling during CTEPH pathogenesis.
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Affiliation(s)
- Chaosheng Deng
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China.
| | - Dawen Wu
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Minxia Yang
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Yunfei Chen
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Caiyun Wang
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Zhanghua Zhong
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Ningfang Lian
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Hua Chen
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
| | - Shuang Wu
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, Fujian, China
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Golob MJ, Tabima DM, Wolf GD, Johnston JL, Forouzan O, Mulchrone AM, Kellihan HB, Bates ML, Chesler NC. Pulmonary arterial strain- and remodeling-induced stiffening are differentiated in a chronic model of pulmonary hypertension. J Biomech 2017; 55:92-98. [PMID: 28262286 DOI: 10.1016/j.jbiomech.2017.02.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2016] [Revised: 01/30/2017] [Accepted: 02/11/2017] [Indexed: 02/06/2023]
Abstract
Pulmonary hypertension (PH) is a debilitating vascular disease that leads to pulmonary artery (PA) stiffening, which is a predictor of patient mortality. During PH development, PA stiffening adversely affects right ventricular function. PA stiffening has been investigated through the arterial nonlinear elastic response during mechanical testing using a canine PH model. However, only circumferential properties were reported and in the absence of chronic PH-induced PA remodeling. Remodeling can alter arterial nonlinear elastic properties via chronic changes in extracellular matrix (ECM) content and geometry. Here, we used an established constitutive model to demonstrate and differentiate between strain-stiffening, which is due to nonlinear elasticity, and remodeling-induced stiffening, which is due to ECM and geometric changes, in a canine model of chronic thromboembolic PH (CTEPH). To do this, circumferential and axial tissue strips of large extralobar PAs from control and CTEPH tissues were tested in uniaxial tension, and data were fit to a phenomenological constitutive model. Strain-induced stiffening was evident from mechanical testing as nonlinear elasticity in both directions and computationally by a high correlation coefficient between the mechanical data and model (R2=0.89). Remodeling-induced stiffening was evident from a significant increase in the constitutive model stress parameter, which correlated with increased PA collagen content and decreased PA elastin content as measured histologically. The ability to differentiate between strain- and remodeling-induced stiffening in vivo may lead to tailored clinical treatments for PA stiffening in PH patients.
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Affiliation(s)
- Mark J Golob
- Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering, Madison, WI 53706, United States
| | - Diana M Tabima
- Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering, Madison, WI 53706, United States
| | - Gregory D Wolf
- Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering, Madison, WI 53706, United States
| | - James L Johnston
- Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering, Madison, WI 53706, United States
| | - Omid Forouzan
- Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering, Madison, WI 53706, United States
| | - Ashley M Mulchrone
- Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering, Madison, WI 53706, United States
| | - Heidi B Kellihan
- Department of Veterinary Medicine, University of Wisconsin-Madison, Madison, WI 53706, United States
| | - Melissa L Bates
- Department of Physiology, University of Iowa, Iowa City, IA 52242, United States
| | - Naomi C Chesler
- Department of Biomedical Engineering, University of Wisconsin-Madison College of Engineering, Madison, WI 53706, United States.
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Mazzotta E, Guglielmini C, Menciotti G, Contiero B, Baron Toaldo M, Berlanda M, Poser H. Red Blood Cell Distribution Width, Hematology, and Serum Biochemistry in Dogs with Echocardiographically Estimated Precapillary and Postcapillary Pulmonary Arterial Hypertension. J Vet Intern Med 2016; 30:1806-1815. [PMID: 27747929 PMCID: PMC5115192 DOI: 10.1111/jvim.14596] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 08/29/2016] [Accepted: 09/13/2016] [Indexed: 11/17/2022] Open
Abstract
Background Red blood cell distribution width (RDW) is a quantitative measurement of anisocytosis. RDW has prognostic value in humans with different cardiovascular and systemic disorders, but few studies have investigated this biomarker in dogs. Objectives To compare the RDW in dogs with precapillary and postcapillary pulmonary hypertension (PH) and a control population of dogs and to correlate RDW with demographic, echocardiographic, and laboratory variables. Animals One hundred and twenty‐seven client‐owned dogs including 19 healthy dogs, 82 dogs with myxomatous mitral valve disease (50 dogs without PH and 32 dogs with postcapillary PH), and 26 dogs with precapillary PH. Methods Prospective study. Dogs were allocated to groups according to clinical and echocardiographic evaluation. RDW and selected laboratory and echocardiographic variables were compared among dog groups. Associations between RDW and demographic, laboratory, and echocardiographic variables were analyzed using correlation and multiple regression analysis. Results Median RDW in dogs with precapillary PH (13.8%, interquartile range 13.2–14.9%) and postcapillary PH (13.7, 13.2–14.7%) was significantly increased compared to healthy dogs (13.3, 12.3–13.7%; P < .05 for both comparisons), but only dogs with severe PH had significantly increased RDW compared to dogs without PH (P < .05). Peak tricuspid regurgitation pressure gradient was significantly associated with increased RDW (rho = 0.263, P = .007). Serum urea concentration, hematocrit, age, and white blood cell number were significantly associated with RDW in the multivariate analysis. Conclusions and Clinical Importance Underlying pathophysiologic processes associated with PH instead of severity of PH are likely responsible for increased RDW in dogs with PH.
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Affiliation(s)
- E Mazzotta
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy
| | - C Guglielmini
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy
| | - G Menciotti
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy
| | - B Contiero
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy
| | - M Baron Toaldo
- Department of Veterinary Medical Sciences, Alma Mater Studiorum-University of Bologna, Bologna, Italy
| | - M Berlanda
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy
| | - H Poser
- Department of Animal Medicine, Production and Health, University of Padova, Legnaro, Italy
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15
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Deng C, Wu D, Yang M, Chen Y, Ding H, Zhong Z, Lian N, Zhang Q, Wu S, Liu K. The role of tissue factor and autophagy in pulmonary vascular remodeling in a rat model for chronic thromboembolic pulmonary hypertension. Respir Res 2016; 17:65. [PMID: 27234007 PMCID: PMC4884382 DOI: 10.1186/s12931-016-0383-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 05/24/2016] [Indexed: 02/03/2023] Open
Abstract
Background Few reports have examined tissue factor (TF) and autophagy expression in chronic pulmonary thromboembolic hypertension (CTEPH) animal models. Objectives: To investigate the role of tissue factor (TF), autophagy and their interactions during chronic thromboembolic pulmonary hypertension (CTEPH) pathogenesis in a rat model. Methods Autologous blood clots were repeatedly injected into the left jugular vein of rats with injecting endogenous fibrinolysis inhibitor tranexamic acid (TXA). Mean pulmonary arterial pressure (mPAP), histopathology and TF, Beclin-1 and microtubule-associated protein 1 light chain (LC3) expression levels were detected. Results The mPAP and vessel wall area/total area (WA/TA) ratio in the experiment group increased significantly (P < 0.05). TF mRNA and protein expression levels in the experiment group increased significantly (P < 0.05). Beclin-1 and LC3B mRNA and protein expression levels were lower in the experiment group (P < 0.05). The mPAP had a positive correlation with WA/TA ratio (r = 0.955, P < 0.05). Beclin-1 and LC3B protein expression had a negative correlation with the WA/TA ratio (r = -0.963, P < 0.05, r = -0.965, P < 0.05, respectively). TF protein expression had a negative correlation with both Beclin-1 and LC3B protein expression (r = -0.995, P <0.05, r = -0972, P < 0.05, respectively). Conclusions A rat model of CTEPH can be established by repeatedly introducing autologous blood clots into the pulmonary artery with injecting TXA. TF and autophagy may play a key role during CTEPH pathogenesis, especially in vascular remodeling.
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Affiliation(s)
- Chaosheng Deng
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China.
| | - Dawen Wu
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Minxia Yang
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Yunfei Chen
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Haibo Ding
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Zhanghua Zhong
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Ningfang Lian
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Qiaoxian Zhang
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Shuang Wu
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
| | - Kaixiong Liu
- Division of Respiratory and Critical Care Medicine, First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian Province, 350005, China
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Kanno N, Hori Y, Hidaka Y, Chikazawa S, Kanai K, Hoshi F, Itoh N. Plasma atrial natriuretic peptide and N-terminal pro B-type natriuretic peptide concentrations in dogs with right-sided congestive heart failure. J Vet Med Sci 2016; 78:535-42. [PMID: 26607133 PMCID: PMC4873841 DOI: 10.1292/jvms.15-0435] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The clinical utility of plasma natriuretic peptide concentrations in dogs with right-sided congestive heart failure (CHF) remains unclear. We investigated whether plasma levels of atrial natriuretic peptide (ANP) and N-terminal pro B-type natriuretic peptide (NT-proBNP) are useful for assessing the congestive signs of right-sided heart failure in dogs. This retrospective study enrolled 16 healthy dogs and 51 untreated dogs with presence (n=28) or absence (n=23) of right-sided CHF. Medical records of physical examinations, thoracic radiography and echocardiography were reviewed. The plasma concentration of canine ANP was measured with a chemiluminescent enzyme immunoassay. Plasma NT-proBNP concentrations were determined using an enzyme immunoassay. Plasma ANP and NT-proBNP concentrations in dogs with right-sided CHF were significantly higher than in healthy controls and those without right-sided CHF. The plasma NT-proBNP concentration >3,003 pmol/l used to identify right-sided CHF had a sensitivity of 88.5% and specificity of 90.3%. An area under the ROC curve (AUC) was 0.93. The AUC for NT-proBNP was significantly higher than the AUCs for the cardiothoracic ratio, vertebral heart score, ratio of right ventricular end-diastolic internal diameter to body surface area, tricuspid late diastolic flow and ratio of the velocities of tricuspid early to late diastolic flow. These results suggest that plasma ANP and NT-proBNP concentrations increase markedly in dogs with right-sided CHF. Particularly, NT-proBNP is simple and helpful biomarkers to assess the right-sided CHF.
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Affiliation(s)
- Nobuyuki Kanno
- Laboratory of Veterinary Surgery, Faculty of Agriculture, Miyazaki University, 1-1 Gakuen Kibanadai Nishi, Miyazaki 889-2192, Japan
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Fukumoto S, Miyasho T, Hanazono K, Saida K, Kadosawa T, Iwano H, Uchide T. Big endothelin-1 as a tumour marker for canine haemangiosarcoma. Vet J 2015; 204:269-74. [PMID: 25920760 DOI: 10.1016/j.tvjl.2015.03.024] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2013] [Revised: 03/17/2015] [Accepted: 03/23/2015] [Indexed: 10/23/2022]
Abstract
Haemangiosarcoma (HSA) is an important malignant neoplasm of dogs that originates from vascular endothelial cells. This study explored the suitability of using serum big endothelin-1 (ET-1) as a tumour marker for canine spontaneous HSA. Serum big ET-1 was measured in dogs with splenic HSA (n = 14), splenic malignant tumours other than HSA (n = 10), benign splenic lesions (n = 11) and normal healthy dogs (n = 17) by ELISA. Serum big ET-1 levels in dogs with HSA were significantly (P < 0.01) higher than in other dogs. High sensitivity (100%, 95% confidence interval 86-100%) and specificity (95%, 95% confidence interval 86-95%) for HSA diagnosis were obtained using a cut-off of 17 pg/mL according to receiver operating characteristic (ROC) curves (area under ROC curve 0.93). PPET1, ETA, VEGF and Hif1-α mRNA expression, measured by real-time PCR, were elevated in HSA compared with normal tissues. These findings suggest that elevated serum big ET-1 could be used as a diagnostic marker for canine HSA.
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Affiliation(s)
- Shinya Fukumoto
- Veterinary Internal Medicine, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Taku Miyasho
- Companion Animal Nutrition, Department of Veterinary Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Kiwamu Hanazono
- Veterinary Internal Medicine, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Kaname Saida
- Institute for Biomedical Research and Functions, National Institute of Advanced Industrial Science and Technology (AIST), Ibaraki 305-8566, Japan
| | - Tsuyoshi Kadosawa
- Veterinary Oncology, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Hidetomo Iwano
- Veterinary Biochemistry, Department of Basic Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Tsuyoshi Uchide
- Veterinary Internal Medicine, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan.
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18
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Evaluation of red cell distribution width in dogs with pulmonary hypertension. J Vet Cardiol 2014; 16:227-35. [PMID: 25465342 DOI: 10.1016/j.jvc.2014.08.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Revised: 08/04/2014] [Accepted: 08/19/2014] [Indexed: 11/20/2022]
Abstract
OBJECTIVES To compare red cell distribution width (RDW) between dogs with different causes of pulmonary hypertension (PH) and a control dog population to determine whether RDW was correlated with severity of PH as measured by echocardiography. A further aim was to determine the prognostic significance of increased RDW for dogs with PH. ANIMALS Forty-four client-owned dogs with PH and 79 control dogs presented to a single tertiary referral institution. METHODS Signalment, clinical pathological and echocardiographic data were obtained retrospectively from the medical records of dogs with PH, and RDW measured on a Cell-Dyn 3500 was compared between dogs with pre- and post-capillary PH and a control population. Referring veterinary surgeons were contacted for follow-up information and Kaplan-Meier analysis was conducted to investigate differences in survival time between affected dogs with different RDW values. RESULTS The RDW was significantly greater in dogs with pre-capillary PH compared to control dogs. There was no difference in median survival times between dogs with PH divided according to RDW values. The RDW was positively correlated with mean corpuscular volume and haematocrit in dogs with PH, but did not correlate with echocardiographic variables. CONCLUSIONS An association was found between dogs with PH and increased RDW; however there was considerable overlap in values between control dogs and dogs with PH. The RDW was not associated with survival in this study.
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Mikawa S, Miyagawa Y, Toda N, Tominaga Y, Takemura N. Predictive model for the detection of pulmonary hypertension in dogs with myxomatous mitral valve disease. J Vet Med Sci 2014; 77:7-13. [PMID: 25319513 PMCID: PMC4349532 DOI: 10.1292/jvms.14-0050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Pulmonary hypertension (PH) often occurs due to a left heart disease, such as
myxomatous mitral valve disease (MMVD), in dogs and is diagnosed using Doppler
echocardiography and estimated pulmonary arterial pressure. Diagnosis of PH in dogs
requires expertise in echocardiography: however, the examination for PH is difficult to
perform in a clinical setting. Thus, simple and reliable methods are required for the
diagnosis of PH in dogs. The purpose of this study was to develop models using multiple
logistic regression analysis to detect PH due to left heart disease in dogs with MMVD
without echocardiography. The medical records of dogs with MMVD were retrospectively
reviewed, and 81 dogs were included in this study and classified into PH and non-PH
groups. Bivariate analysis was performed to compare all parameters between the groups, and
variables with P values of <0.25 in bivariate analysis were included
in multiple logistic regression analysis to develop models for the detection of PH. In
multiple logistic regression analysis, the model included a vertebral heart scale short
axis of >5.2 v, and a length of sternal contact of >3.3 v was considered suitable
for the detection of PH. The predictive accuracy of this model (85.9%) was judged
statistically adequate, and therefore, this model may be useful to screen for PH due to
left heart disease in dogs with MMVD without echocardiography.
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Affiliation(s)
- Shoma Mikawa
- Laboratory of Veterinary Internal Medicine II, School of Veterinary Medicine, Faculty of Veterinary Science, Nippon Veterinary and Life Science University, 1-7-1 Kyonan-cho, Musashino-shi, Tokyo 180-8602, Japan
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20
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Fukumoto S, Hanazono K, Miyasho T, Endo Y, Kadosawa T, Iwano H, Uchide T. Serum big endothelin-1 as a clinical marker for cardiopulmonary and neoplastic diseases in dogs. Life Sci 2014; 118:329-32. [PMID: 24447631 DOI: 10.1016/j.lfs.2014.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/16/2013] [Accepted: 01/10/2014] [Indexed: 01/26/2023]
Abstract
AIMS Many studies of human subjects have demonstrated the utility of assessing serum levels of endothelin-1 (ET-1) and big ET-1 as clinical biomarkers in cardiopulmonary and neoplastic diseases. In this study we explored the feasibility of using serum big ET-1 as a reliable veterinary marker in dogs with various cardiopulmonary and neoplastic diseases. MAIN METHODS Serum big ET-1 levels were measured by ELISA in dogs with cardiopulmonary (n=21) and neoplastic diseases (n=57). Dogs exhibiting cardiopulmonary disease were divided into two groups based on the velocity of tricuspid valve regurgitation (3.0>m/s) measured by ultrasound: without and with pulmonary hypertension. Big ET-1 levels for the dogs with the diseases were compared with levels in normal healthy dogs (n=17). KEY FINDINGS Dogs with cardiopulmonary disease (4.6±4.6 pmol/l) showed a significantly (P<0.01) higher level of big ET-1 than healthy control dogs (1.1±0.53 pmol/l). Serum levels in the dogs with pulmonary hypertension (6.2±5.3 pmol/l) were significantly (P<0.01) higher than those without pulmonary hypertension (2.0±0.6 pmol/l). Dogs with hemangiosarcoma (5.6±2.2 pmol/l), adenocarcinoma (2.0±1.8 pmol/l), histiocytic sarcoma (3.3±1.9 pmol/l), chondrosarcoma or osteosarcoma (3.0±1.6 pmol/l) and hepatocellular carcinoma (2.7±1.8 pmol/l) showed significantly (P<0.05) higher levels than healthy control dogs. SIGNIFICANCE These findings point to the potential of serum big ET-1 as a clinical marker for cardiopulmonary and neoplastic diseases in dogs.
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Affiliation(s)
- Shinya Fukumoto
- Veterinary Internal Medicine, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501,Japan
| | - Kiwamu Hanazono
- Veterinary Internal Medicine, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501,Japan
| | - Taku Miyasho
- Companion Animal Nutrition, Department of Veterinary Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Yoshifumi Endo
- Veterinary Oncology, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Tsuyoshi Kadosawa
- Veterinary Oncology, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Hidetomo Iwano
- Veterinary Biochemistry, Department of Basic Veterinary Medicine, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501, Japan
| | - Tsuyoshi Uchide
- Veterinary Internal Medicine, Department of Small Animal Clinical Sciences, School of Veterinary Medicine, Rakuno Gakuen University, Ebetsu, Hokkaido 069-8501,Japan.
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