Publications by authors named "Harm Bogaard"

Pulmonary vascular disease is not a single condition; rather it can accompany a variety of pathologies that impact the pulmonary vasculature. Applying precision medicine strategies to better phenotype, diagnose, monitor, and treat pulmonary vascular disease is increasingly possible with the growing accessibility of powerful clinical and research tools. Nevertheless, challenges exist in implementing these tools to optimal effect.

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Clinical monitoring of pulmonary edema due to vascular hyperpermeability in acute respiratory distress syndrome (ARDS) poses significant clinical challenges. Presently, no biological or radiological markers are available for quantifying pulmonary edema. Our aim was to phenotype pulmonary edema and pulmonary vascular permeability in patients with coronavirus disease 2019 (COVID-19) ARDS.

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Rationale: Approximately 80% of patients with non-familial pulmonary arterial hypertension (PAH) lack identifiable pathogenic genetic variants. While most genetic studies of PAH have focused on predicted loss-of-function variants, recent approaches have identified ultra-rare missense variants associated with the disease. encodes a highly conserved transcription factor, essential for angiogenesis and vasculogenesis in human and mouse lungs.

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Pulmonary hypertension (PH) remains a challenging condition to diagnose, classify and treat. Current approaches to the assessment of PH include echocardiography, ventilation/perfusion scintigraphy, cross-sectional imaging using computed tomography and magnetic resonance imaging, and right heart catheterisation. However, these approaches only provide an indirect readout of the primary pathology of the disease: abnormal vascular remodelling in the pulmonary circulation.

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Importance: Online symptom monitoring through patient-reported outcomes can enhance health-related quality of life and survival. However, widespread adoption in clinical care remains limited due to various barriers including the need to reduce health care practitioners' workload.

Objective: To report the effects of patient-reported outcome (PRO) symptom monitoring on HRQOL and survival up to 1 year after initiation of any treatment in patients with lung cancer.

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Background: Exercise hemodynamics are recommended for early detection of pulmonary arterial hypertension (PAH) and have been suggested to be predictive of future development of PAH in high-risk populations such as BMPR2 mutation carriers. However, the optimal exercise hemodynamic screening parameter remains to be determined. Recent data suggest that pulmonary vascular distensibility (α) may serve as a useful parameter for early detection of PAH.

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  • * Using network pharmacology and molecular docking, researchers identified active compounds in BHCs and their target proteins, revealing strong binding affinity with targets like PTGS1 and ESR1 that influence important biological pathways.
  • * The study's findings suggest that BHCs improve cardiac and pulmonary function, increase exercise tolerance, and enhance the quality of life for patients suffering from COPD-PH, confirming their efficacy and safety.
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  • Pathogenic variants in a specific gene significantly increase the risk of developing heritable pulmonary arterial hypertension, and examining unaffected carriers through advanced screening methods can help in early diagnosis and understanding of the condition.
  • A study compared 28 unaffected carriers to 21 healthy controls using various cardiac imaging and exercise tests; findings revealed carriers had smaller heart volumes but higher afterload, indicating potential early signs of the disease.
  • Over a 4-year follow-up, two unaffected carriers went on to develop pulmonary arterial hypertension, despite showing normal cardiac indices at the time of diagnosis, highlighting the importance of monitoring these individuals for early intervention.
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Introduction: Chronic thromboembolic pulmonary hypertension (CTEPH) is often diagnosed late in acute pulmonary embolism survivors: more efficient testing to expedite diagnosis may considerably improve patient outcomes. The InShape II algorithm safely rules out CTEPH (failure rate 0.29%) while requiring echocardiography in only 19% of patients but may be improved by adding detailed reading of the computed tomography pulmonary angiography diagnosing the index pulmonary embolism.

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This article examines technical use of Fitbit during an intervention for pulmonary hypertension (PAH)-patients. Technical issues with the device led to data being unavailable(37.5%).

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  • A protocol combining VEGF-R inhibitor SU5416 and hypoxia to induce severe pulmonary hypertension in rats is well-established, but results vary in mice, possibly due to species differences in response to hypoxia.
  • Attempts to induce severe and irreversible pulmonary hypertension in mice using SU5416 or monocrotaline pyrrole after pneumonectomy did not yield the expected outcomes, as no significant changes in pulmonary hemodynamics were observed.
  • The study suggests that C57/B6 mice may not be suitable for developing a mouse model of severe, persistent pulmonary hypertension through the proposed "two-hit" approach combining surgical and pharmacological interventions.
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  • Cardiac fibrosis is linked to heart failure and arises from cardiac fibroblasts reacting to increased pressure or volume.
  • Research on cardiac fibroblasts is limited due to the difficulty in obtaining human cells and their transformation into myofibroblasts during lab cultures.
  • This study shows that induced pluripotent stem cell-derived cardiac fibroblasts (iPSC-CFs) have similar properties to primary fibroblasts and respond to mechanical stress and cytokines, making them valuable for modeling heart disease.
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Chronic thromboembolic pulmonary hypertension (CTEPH) is a debilitating disease characterized by thrombotic occlusion of pulmonary arteries and vasculopathy, leading to increased pulmonary vascular resistance and progressive right-sided heart failure. Thrombotic lesions in CTEPH contain CD68 macrophages, and increasing evidence supports their role in disease pathogenesis. Macrophages are classically divided into pro-inflammatory M1 macrophages and anti-inflammatory M2 macrophages, which are involved in wound healing and tissue repair.

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Background: The consequences of tricuspid regurgitation (TR) for right ventricular (RV) function and prognosis in pulmonary arterial hypertension (PAH) are poorly described and effects of tricuspid valve repair on the RV are difficult to predict.

Methods: In 92 PAH patients with available cardiac magnetic resonance (CMR) studies, TR volume was calculated as the difference between RV stroke volume and forward stroke volume, pulmonary artery (PA) stroke volume. Survival was estimated from the time of the CMR scan to cardiopulmonary death or lung transplantation.

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Background: Bone morphogenetic proteins 9 and 10 (BMP9 and BMP10), encoded by and , respectively, play a pivotal role in pulmonary vascular regulation. variants have been reported in pulmonary arterial hypertension (PAH) and hereditary haemorrhagic telangiectasia (HHT). However, the phenotype of and carriers remains largely unexplored.

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Chronic thromboembolic pulmonary hypertension involves the formation and nonresolution of thrombus, dysregulated inflammation, angiogenesis, and the development of a small-vessel vasculopathy. We aimed to establish the genetic basis of chronic thromboembolic pulmonary hypertension to gain insight into its pathophysiological contributors. We conducted a genome-wide association study on 1,907 European cases and 10,363 European control subjects.

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Background: The clinical phenotype of patients with idiopathic pulmonary arterial hypertension (IPAH) has changed. Whether subgroups of patients with IPAH have different vascular phenotypes is a subject of debate.

Research Question: What are the histologic patterns and their clinical correlates in patients with a diagnosis of IPAH or hereditary pulmonary arterial hypertension?

Study Design And Methods: In this this cross-sectional registry study, lung histology of 50 patients with IPAH was assessed qualitatively by two experienced pathologists.

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  • * In a clinical trial involving 385 COVID-19 patients, the tyrosine kinase inhibitor imatinib was found to significantly reduce severe hyperglycaemia compared to a placebo, despite not affecting insulin production or central insulin sensitivity.
  • * Imatinib treatment also led to increased levels of beneficial proteins like angiotensin-2 and adiponectin, while lowering inflammatory markers, indicating it may help restore glucose regulation in COVID-19 patients.
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Serum biomarkers and lung ultrasound are important measures for prognostication and treatment allocation in patients with COVID-19. Currently, there is a paucity of studies investigating relationships between serum biomarkers and ultrasonographic biomarkers derived from lung ultrasound. This study aims to assess correlations between serum biomarkers and lung ultrasound findings.

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  • The study examines how pulmonary endarterectomy (PEA) affects hemodynamics and exercise capacity in patients with chronic thromboembolic pulmonary hypertension (CTEPH) classified as mild or severe based on their mean pulmonary arterial pressure (mPAP).
  • 18 CTEPH patients were evaluated before and 18 months after PEA, revealing that those with mild CTEPH had less impairment in exercise capacity at baseline compared to the severe group.
  • Post-surgery, both groups showed improvements in hemodynamics, but only the severe group experienced a significant increase in exercise capacity, suggesting postoperative outcomes were similar despite initial differences in severity.
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  • COVID-19 can cause serious breathing problems due to how the virus affects the body and how the immune system reacts to it.
  • A treatment called imatinib may help patients breathe better and reduce the time they need help with machines.
  • Researchers studied blood proteins from many patients to find out which ones help predict serious illness and see how imatinib affects these proteins in COVID-19 patients.
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