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Oki T, Nagatani Y, Ishida S, Hashimoto M, Oshio Y, Hanaoka J, Uemura R, Watanabe Y. Right main pulmonary artery distensibility on dynamic ventilation CT and its association with respiratory function. Eur Radiol Exp 2024; 8:50. [PMID: 38570418 PMCID: PMC10991550 DOI: 10.1186/s41747-024-00441-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 01/22/2024] [Indexed: 04/05/2024] Open
Abstract
BACKGROUND Heartbeat-based cross-sectional area (CSA) changes in the right main pulmonary artery (MPA), which reflects its distensibility associated with pulmonary hypertension, can be measured using dynamic ventilation computed tomography (DVCT) in patients with and without chronic obstructive pulmonary disease (COPD) during respiratory dynamics. We investigated the relationship between MPA distensibility (MPAD) and respiratory function and how heartbeat-based CSA is related to spirometry, mean lung density (MLD), and patient characteristics. METHODS We retrospectively analyzed DVCT performed preoperatively in 37 patients (20 female and 17 males) with lung cancer aged 70.6 ± 7.9 years (mean ± standard deviation), 18 with COPD and 19 without. MPA-CSA was separated into respiratory and heartbeat waves by discrete Fourier transformation. For the cardiac pulse-derived waves, CSA change (CSAC) and CSA change ratio (CSACR) were calculated separately during inhalation and exhalation. Spearman rank correlation was computed. RESULT In the group without COPD as well as all cases, CSACR exhalation was inversely correlated with percent residual lung volume (%RV) and RV/total lung capacity (r = -0.68, p = 0.003 and r = -0.58, p = 0.014). In contrast, in the group with COPD, CSAC inhalation was correlated with MLDmax and MLD change rate (MLDmax/MLDmin) (r = 0.54, p = 0.020 and r = 0.64, p = 0.004) as well as CSAC exhalation and CSACR exhalation. CONCLUSION In patients with insufficient exhalation, right MPAD during exhalation was decreased. Also, in COPD patients with insufficient exhalation, right MPAD was reduced during inhalation as well as exhalation, which implied that exhalation impairment is a contributing factor to pulmonary hypertension complicated with COPD. RELEVANCE STATEMENT Assessment of MPAD in different respiratory phases on DVCT has the potential to be utilized as a non-invasive assessment for pulmonary hypertension due to lung disease and/or hypoxia and elucidation of its pathogenesis. KEY POINTS • There are no previous studies analyzing all respiratory phases of right main pulmonary artery distensibility (MPAD). • Patients with exhalation impairment decreased their right MPAD. • Analysis of MPAD on dynamic ventilation computed tomography contributes to understanding the pathogenesis of pulmonary hypertension due to lung disease and/or hypoxia in patients with expiratory impairment.
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Affiliation(s)
- Tatsuya Oki
- Department of Radiology, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Yukihiro Nagatani
- Department of Radiology, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan.
| | - Shota Ishida
- Department of Radiological Technology, Kyoto College of Medical Science, 1-3 Sonobecho Oyamahigashimachi Imakita, Nantan, Kyoto, 622-0041, Japan
| | - Masayuki Hashimoto
- Department of Thoracic Surgery, Takeda General Hospital, 28-1 Ishida Moriminamicho, Fushimi-Ku, Kyoto, 601-1434, Japan
- Division of General Thoracic Surgery, Department of Surgery, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Yasuhiko Oshio
- Division of General Thoracic Surgery, Department of Surgery, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Jun Hanaoka
- Division of General Thoracic Surgery, Department of Surgery, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Ryo Uemura
- Department of Radiology, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
| | - Yoshiyuki Watanabe
- Department of Radiology, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
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Zhang H, Leng S, Gao F, Kovalik JP, Wee HN, Chua KV, Ching J, Allen JC, Zhao X, Tan RS, Wu Q, Leiner T, Koh AS, Zhong L. Characteristics of pulmonary artery strain assessed by cardiovascular magnetic resonance imaging and associations with metabolomic pathways in human ageing. Front Cardiovasc Med 2024; 11:1346443. [PMID: 38486706 PMCID: PMC10937542 DOI: 10.3389/fcvm.2024.1346443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/20/2024] [Indexed: 03/17/2024] Open
Abstract
Background Pulmonary artery (PA) strain is associated with structural and functional alterations of the vessel and is an independent predictor of cardiovascular events. The relationship of PA strain to metabolomics in participants without cardiovascular disease is unknown. Methods In the current study, community-based older adults, without known cardiovascular disease, underwent simultaneous cine cardiovascular magnetic resonance (CMR) imaging, clinical examination, and serum sampling. PA global longitudinal strain (GLS) analysis was performed by tracking the change in distance from the PA bifurcation to the pulmonary annular centroid, using standard cine CMR images. Circulating metabolites were measured by cross-sectional targeted metabolomics analysis. Results Among n = 170 adults (mean age 71 ± 6.3 years old; 79 women), mean values of PA GLS were 16.2 ± 4.4%. PA GLS was significantly associated with age (β = -0.13, P = 0.017), heart rate (β = -0.08, P = 0.001), dyslipidemia (β = -2.37, P = 0.005), and cardiovascular risk factors (β = -2.49, P = 0.001). Alanine (β = -0.007, P = 0.01) and proline (β = -0.0009, P = 0.042) were significantly associated with PA GLS after adjustment for clinical risk factors. Medium and long-chain acylcarnitines were significantly associated with PA GLS (C12, P = 0.027; C12-OH/C10-DC, P = 0.018; C14:2, P = 0.036; C14:1, P = 0.006; C14, P = 0.006; C14-OH/C12-DC, P = 0.027; C16:3, P = 0.019; C16:2, P = 0.006; C16:1, P = 0.001; C16:2-OH, P = 0.016; C16:1-OH/C14:1-DC, P = 0.028; C18:1-OH/C16:1-DC, P = 0.032). Conclusion By conventional CMR, PA GLS was associated with aging and vascular risk factors among a contemporary cohort of older adults. Metabolic pathways involved in PA stiffness may include gluconeogenesis, collagen synthesis, and fatty acid oxidation.
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Affiliation(s)
- Hongzhou Zhang
- Department of Cardiovascular Medicine, First Affiliated Hospital of Gannan Medical University, Ganzhou, Jiangxi, China
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore
| | - Shuang Leng
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - Fei Gao
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - Jean-Paul Kovalik
- Duke-NUS Medical School, Singapore, Singapore
- Department of Endocrinology, Singapore General Hospital, Singapore, Singapore
| | | | | | - Jianhong Ching
- Duke-NUS Medical School, Singapore, Singapore
- KK Research Centre, KK Women’s and Children’s Hospital, Singapore, Singapore
| | | | - Xiaodan Zhao
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore
| | - Ru-San Tan
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - Qinghua Wu
- Department of Cardiology, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
| | - Tim Leiner
- Department of Radiology, Mayo Clinic, Rochester, MN, United States
| | - Angela S. Koh
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
| | - Liang Zhong
- National Heart Research Institute Singapore, National Heart Centre Singapore, Singapore, Singapore
- Duke-NUS Medical School, Singapore, Singapore
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3
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Turner V, Maret E, Kim JB, Codari M, Hinostroza V, Mastrodicasa D, Watkins AC, Fearon WF, Fischbein MP, Haddad F, Willemink MJ, Fleischmann D. Reduced Pulmonary Artery Distensibility Predicts Persistent Pulmonary Hypertension and 2-Year Mortality in Patients with Severe Aortic Stenosis Undergoing TAVR. Acad Radiol 2023; 30:2825-2833. [PMID: 37147161 DOI: 10.1016/j.acra.2023.03.014] [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: 01/04/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 05/07/2023]
Abstract
RATIONALE AND OBJECTIVES Post-TAVR persistent pulmonary hypertension (PH) is a better predictor of poor outcome than pre-TAVR PH. In this longitudinal study we sought to evaluate whether pulmonary artery (distensibility (DPA) measured on preprocedural ECG-gated CTA is associated with persistent-PH and 2-year mortality after TAVR. MATERIALS AND METHODS Three hundred and thirty-six patients undergoing TAVR between July 2012 and March 2016 were retrospectively included and followed for all-cause mortality until November 2017. All patients underwent retrospectively ECG-gated CTA prior to TAVR. Main pulmonary artery (MPA) area was measured in systole and in diastole. DPA was calculated as: [(area-MPAmax-area-MPAmin)/area-MPAmax]%. ROC analysis was performed to assess the AUC for persistent-PH. Youden Index was used to determine the optimal threshold of DPA for persistent-PH. Two groups were compared based on a DPA threshold of 8% (specificity of 70% for persistent-PH). Kaplan-Meier, Cox proportional-hazard, and logistic regression analyses were performed. The primary clinical endpoint was defined as persistent-PH post-TAVR. The secondary endpoint was defined as all-cause mortality 2 years after TAVR. RESULTS Median follow-up time was 413 (interquartiles 339-757) days. A total of 183 (54%) had persistent-PH and 68 (20%) patients died within 2-years after TAVR. Patients with DPA<8% had significantly more persistent-PH (67% vs 47%, p<0.001) and 2-year deaths (28% vs 15%, p=0.006), compared to patients with DPA>8%. Adjusted multivariable regression analyses showed that DPA<8% was independently associated with persistent-PH (OR 2.10 [95%-CI 1.3-4.5], p=0.007) and 2-year mortality (HR 2.91 [95%-CI 1.5-5.8], p=0.002). Kaplan-Meier analysis showed that 2-year mortality of patients with DPA<8% was significantly higher compared to patients with DPA≥8% (mortality 28% vs 15%; log-rank p=0.003). CONCLUSION DPA on preprocedural CTA is independently associated with persistent-PH and two-year mortality in patients who undergo TAVR.
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Affiliation(s)
- Valery Turner
- Department of Radiology, Stanford University School of Medicine, MC:5659, 453 Quarry Road, Stanford, CA, 94304.
| | - Eva Maret
- Department of Radiology, Stanford University School of Medicine, MC:5659, 453 Quarry Road, Stanford, CA, 94304; Department of Clinical Physiology, Karolinska University Hospital, and Karolinska Institutet, Stockholm, Sweden
| | - Juyong B Kim
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, California; Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California
| | - Marina Codari
- Department of Radiology, Stanford University School of Medicine, MC:5659, 453 Quarry Road, Stanford, CA, 94304
| | - Virginia Hinostroza
- Department of Radiology, Stanford University School of Medicine, MC:5659, 453 Quarry Road, Stanford, CA, 94304
| | - Domenico Mastrodicasa
- Department of Radiology, Stanford University School of Medicine, MC:5659, 453 Quarry Road, Stanford, CA, 94304; Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California
| | - A Claire Watkins
- Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, California
| | - William F Fearon
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, California; Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, California
| | - Michael P Fischbein
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, California; Department of Cardiothoracic Surgery, Stanford University School of Medicine, Stanford, California
| | - Francois Haddad
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, California; Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, California
| | - Martin J Willemink
- Department of Radiology, Stanford University School of Medicine, MC:5659, 453 Quarry Road, Stanford, CA, 94304
| | - Dominik Fleischmann
- Department of Radiology, Stanford University School of Medicine, MC:5659, 453 Quarry Road, Stanford, CA, 94304; Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, California
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Boxhammer E, Paar V, Jirak P, Köller C, Demirel O, Eder S, Reiter C, Kammler J, Kellermair J, Hammerer M, Blessberger H, Steinwender C, Hoppe UC, Lichtenauer M. Main pulmonary artery diameter in combination with cardiovascular biomarkers: new possibilities to identify pulmonary hypertension in patients with severe aortic valve stenosis. Minerva Med 2023; 114:802-814. [PMID: 35822856 DOI: 10.23736/s0026-4806.22.08167-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2024]
Abstract
BACKGROUND Echocardiography is currently the noninvasive method of choice to screen patients with severe aortic valve stenosis (AS) for pulmonary hypertension (PH) by estimating systolic pulmonary artery pressure (sPAP). However, radiological options are also available by determining the main pulmonary artery (MPA) diameter in the setting of CT angiography. The aim of the present study was to compare cardiovascular biomarkers with the MPA diameter to allow other ways of detecting PH in patients with severe AS. METHODS One hundred ninety-four patients with severe AS undergoing transcatheter aortic valve replacement (TAVR) were included in this study and were divided into two groups based on the CT-angiographically determined MPA diameter. In accordance with ESC guidelines, a cut-off value of 29 mm was determined in this study, with the absence of PH defined by an MPA diameter <29 mm (N79/194) and the presence of PH defined by an MPA diameter ≥29 mm (115/194). Immediately before interventional aortic valve replacement, blood samples were drawn from the subjects and relevant cardiovascular biomarkers such as BNP, cTnI, GDF-15, H-FABP, IGF-BP2 and suPAR were assessed. RESULTS Patients with an MPA diameter ≥29 mm had significantly higher BNP (P=0.004), cTnI (P=0.039) and H-FABP (P=0.015) plasma levels, whereas GDF-15 (P=0.140), IGF-BP2 (P=0.088) and suPAR (P=0.140) showed no significant differences. In addition, cut-off values were calculated to predict an MPA diameter ≥29 mm. Significant results were shown with 1634.00 pg/mL for BNP (P=0.004), with 16.50 pg/mL for cTnI (P=0.039) and with 1.16 ng/mL for H-FABP (P=0.016). In a combined biomarker analysis, the 2-way combination of BNP and IGF-BP2 (AUC 0.671; 95%CI 0.538-0.805; P=0.023) and the 3-way combination of BNP, H-FABP and IGF-BP2 (AUC 0.685; 95%CI 0.551-0.818; P=0.015) showed the best results. Biomarker follow-up at 3 and 12 months after TAVR did not require additional information gain. Regarding 1-year survival, no significant difference could be detected between patients with an MPA diameter<29 mm compared to patients with ≥29 mm (log-rank test: P=0.262). CONCLUSIONS The MPA diameter remains a controversial parameter for the detection of PH in patients with severe AS. Standing on its own, this non-invasive parameter may not be precise enough to detect PH accurately. Combining this parameter with several biomarkers did not provide significant additional information.
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Affiliation(s)
- Elke Boxhammer
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Vera Paar
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Peter Jirak
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Clara Köller
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Ozan Demirel
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Sarah Eder
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Christian Reiter
- Department of Cardiology, Kepler University Hospital, Medical Faculty of the Johannes Kepler University of Linz, Linz, Austria
| | - Jürgen Kammler
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
- Department of Cardiology, Kepler University Hospital, Medical Faculty of the Johannes Kepler University of Linz, Linz, Austria
| | - Jörg Kellermair
- Department of Cardiology, Kepler University Hospital, Medical Faculty of the Johannes Kepler University of Linz, Linz, Austria
| | - Matthias Hammerer
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Hermann Blessberger
- Department of Cardiology, Kepler University Hospital, Medical Faculty of the Johannes Kepler University of Linz, Linz, Austria
| | - Clemens Steinwender
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
- Department of Cardiology, Kepler University Hospital, Medical Faculty of the Johannes Kepler University of Linz, Linz, Austria
| | - Uta C Hoppe
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria
| | - Michael Lichtenauer
- Division of Cardiology, Department of Internal Medicine II, Paracelsus Medical University of Salzburg, Salzburg, Austria -
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Development of a wearable belt with integrated sensors for measuring multiple physiological parameters related to heart failure. Sci Rep 2022; 12:20264. [PMID: 36424377 PMCID: PMC9691694 DOI: 10.1038/s41598-022-23680-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 11/03/2022] [Indexed: 11/27/2022] Open
Abstract
Heart failure is a chronic disease, the symptoms of which occur due to a lack of cardiac output. It can be better managed with continuous and real time monitoring. Some efforts have been made in the past for the management of heart failure. Most of these efforts were based on a single parameter for example thoracic impedance or heart rate alone. Herein, we report a wearable device that can provide monitoring of multiple physiological parameters related to heart failure. It is based on the sensing of multiple parameters simultaneously including thoracic impedance, heart rate, electrocardiogram and motion activity. These parameters are measured using different sensors which are embedded in a wearable belt for their continuous and real time monitoring. The healthcare wearable device has been tested in different conditions including sitting, standing, laying, and walking. Results demonstrate that the reported wearable device keeps track of the aforementioned parameters in all conditions.
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Boxhammer E, Berezin AE, Paar V, Bacher N, Topf A, Pavlov S, Hoppe UC, Lichtenauer M. Severe Aortic Valve Stenosis and Pulmonary Hypertension: A Systematic Review of Non-Invasive Ways of Risk Stratification, Especially in Patients Undergoing Transcatheter Aortic Valve Replacement. J Pers Med 2022; 12:jpm12040603. [PMID: 35455719 PMCID: PMC9026430 DOI: 10.3390/jpm12040603] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 04/01/2022] [Accepted: 04/04/2022] [Indexed: 02/01/2023] Open
Abstract
Patients with severe aortic valve stenosis and concomitant pulmonary hypertension show a significantly reduced survival prognosis. Right heart catheterization as a preoperative diagnostic tool to determine pulmonary hypertension has been largely abandoned in recent years in favor of echocardiographic criteria. Clinically, determination of echocardiographically estimated systolic pulmonary artery pressure falls far short of invasive right heart catheterization data in terms of accuracy. The aim of the present systematic review was to highlight noninvasive possibilities for the detection of pulmonary hypertension in patients with severe aortic valve stenosis, with a special focus on cardiovascular biomarkers. A total of 525 publications regarding echocardiography, cardiovascular imaging and biomarkers related to severe aortic valve stenosis and pulmonary hypertension were analyzed in a systematic database analysis using PubMed Central®. Finally, 39 publications were included in the following review. It was shown that the current scientific data situation, especially regarding cardiovascular biomarkers as non-invasive diagnostic tools for the determination of pulmonary hypertension in severe aortic valve stenosis patients, is poor. Thus, there is a great scientific potential to combine different biomarkers (biomarker scores) in a non-invasive way to determine the presence or absence of PH.
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Affiliation(s)
- Elke Boxhammer
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (V.P.); (N.B.); (A.T.); (U.C.H.)
| | - Alexander E. Berezin
- Internal Medicine Department, State Medical University of Zaporozhye, 69035 Zaporozhye, Ukraine;
| | - Vera Paar
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (V.P.); (N.B.); (A.T.); (U.C.H.)
| | - Nina Bacher
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (V.P.); (N.B.); (A.T.); (U.C.H.)
| | - Albert Topf
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (V.P.); (N.B.); (A.T.); (U.C.H.)
| | - Sergii Pavlov
- Department of Clinical Laboratory Diagnostics, State Medical University of Zaporozhye, 69035 Zaporozhye, Ukraine;
| | - Uta C. Hoppe
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (V.P.); (N.B.); (A.T.); (U.C.H.)
| | - Michael Lichtenauer
- Department of Internal Medicine II, Division of Cardiology, Paracelsus Medical University of Salzburg, 5020 Salzburg, Austria; (E.B.); (V.P.); (N.B.); (A.T.); (U.C.H.)
- Correspondence:
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Ravi Y, Sai-Sudhakar CB, Kuppusamy P. PTEN as a Therapeutic Target in Pulmonary Hypertension Secondary to Left-heart Failure: Effect of HO-3867 and Supplemental Oxygenation. Cell Biochem Biophys 2021; 79:593-607. [PMID: 34133009 DOI: 10.1007/s12013-021-01010-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2021] [Indexed: 01/27/2023]
Abstract
Pulmonary hypertension (PH) is a condition when the pressure in the lung blood vessels is elevated. This leads to increase in thickness of the blood vessels and increases the workload of the heart and lungs. The incidence and prevalence of PH has been on the increase in the last decade. It is estimated that PH affects about 1% of the global population and about 10% of individuals >65 years of age. Of the various types, Group 2 PH is the most common type seen in the elderly population. Fixed PH or PH refractive to therapies is considered a contraindication for heart transplantation; the 30-day mortality in heart transplant recipients is significantly increased in the subset of this population. In general, the pathobiology of PH involves multiple factors including hypoxia, oxidative stress, growth factor receptors, vascular stress, etc. Hence, it is challenging and important to identify specific mechanisms, diagnosis and develop effective therapeutic strategies. The focus of this manuscript is to review some of the important pathobiological processes and mechanisms in the development of PH. Results from our previously reported studies, including targeted treatments along with some new data on PH secondary to left-heart failure, are presented.
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Affiliation(s)
- Yazhini Ravi
- Department of Surgery, University of Tennessee Health Science Center, Memphis, TN, USA
| | | | - Periannan Kuppusamy
- Departments of Radiology and Medicine, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA.
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