Imperial College London
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DrLukeHoward

Faculty of Medicine, National Heart & Lung Institute

Professor of Practice (Cardiopulmonary Medicine)
 
 
 
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Contact

 

+44 (0)20 3313 3171l.howard Website

 
 
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Location

 

B3113Hammersmith HospitalHammersmith Campus

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Summary

 

Publications

Citation

BibTex format

@article{Harbaum:2022:10.1164/rccm.202109-2106OC,
author = {Harbaum, L and Rhodes, CJ and Wharton, J and Lawrie, A and Karnes, JH and Desai, AA and Nichols, WC and Humbert, M and Montani, D and Girerd, B and Sitbon, O and Boehm, M and Novoyatleva, T and Schermuly, RT and Ghofrani, HA and Toshner, M and Kiely, DG and Howard, LS and Swietlik, EM and Gräf, S and Pietzner, M and Morrell, NW and Wilkins, MR},
doi = {10.1164/rccm.202109-2106OC},
journal = {American Journal of Respiratory and Critical Care Medicine},
pages = {1--12},
title = {Mining the plasma proteome for insights into the molecular pathology of pulmonary arterial hypertension.},
url = {http://dx.doi.org/10.1164/rccm.202109-2106OC},
volume = {205},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - RATIONALE: Pulmonary arterial hypertension (PAH) is characterized by structural remodelling of pulmonary arteries and arterioles. Underlying biological processes are likely reflected in a perturbation of circulating proteins. OBJECTIVES: To quantify and analyse the plasma proteome of PAH patients using inherited genetic variation to inform on underlying molecular drivers. METHODS: An aptamer-based assay was used to measure plasma proteins in 357 patients with idiopathic or heritable PAH, 103 healthy volunteers and 23 relatives of PAH patients. In discovery and replication subgroups, the plasma proteomes of PAH and healthy individuals were compared and the relationship to transplantation-free survival in PAH determined. To examine causal relationships to PAH, protein quantitative trait loci (pQTL) that influenced protein levels in the patient population were used as instruments for Mendelian randomisation (MR) analysis. MEASUREMENTS AND MAIN RESULTS: From 4,152 annotated plasma proteins, levels of 208 differed between PAH patients and healthy subjects and 49 predicted long-term survival. MR based on cis-pQTL located in proximity to the encoding gene for proteins that were prognostic and distinguished PAH from health estimated an adverse effect for higher levels of netrin-4 (odds ratio [OR] 1.55, 95%-confidence interval [CI] 1.16-2.08) and a protective effect for higher levels of thrombospondin-2 (OR 0.83, 95%-CI 0.74-0.94) on PAH. Both proteins tracked the development of PAH in previously healthy relatives and changes in thrombospondin-2 associated with pulmonary arterial pressure at disease onset. CONCLUSIONS: Integrated analysis of the plasma proteome and genome implicates two secreted matrix-binding proteins, netrin-4 and thrombospondin-2, in the pathobiology of PAH.
AU  - Harbaum,L
AU  - Rhodes,CJ
AU  - Wharton,J
AU  - Lawrie,A
AU  - Karnes,JH
AU  - Desai,AA
AU  - Nichols,WC
AU  - Humbert,M
AU  - Montani,D
AU  - Girerd,B
AU  - Sitbon,O
AU  - Boehm,M
AU  - Novoyatleva,T
AU  - Schermuly,RT
AU  - Ghofrani,HA
AU  - Toshner,M
AU  - Kiely,DG
AU  - Howard,LS
AU  - Swietlik,EM
AU  - Gräf,S
AU  - Pietzner,M
AU  - Morrell,NW
AU  - Wilkins,MR
DO  - 10.1164/rccm.202109-2106OC
EP  - 12
PY  - 2022///
SN  - 1073-449X
SP  - 1
TI  - Mining the plasma proteome for insights into the molecular pathology of pulmonary arterial hypertension.
T2  - American Journal of Respiratory and Critical Care Medicine
UR  - http://dx.doi.org/10.1164/rccm.202109-2106OC
UR  - https://www.ncbi.nlm.nih.gov/pubmed/35394406
UR  - https://www.atsjournals.org/doi/10.1164/rccm.202109-2106OC
UR  - http://hdl.handle.net/10044/1/96531
VL  - 205
ER  -
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