Plasma insulin-like growth factor binding protein 1 in pulmonary arterial hypertension

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Abstract

Background: Beside the pulmonary vasoconstriction observed in pulmonary arterial hypertension (PAH), severe proliferative and antiapoptotic cellular phenotypes result in vascular remodelling. Many recent findings indicate similarities between PAH and tumour pathology. For instance, insulin-like growth factor (IGF)-1 signalling, which is known to promote tumour development, is implicated in PAH. Higher circulating IGF binding protein (IGFBP)-1 levels are associated with worse survival in PAH. The present study aimed to investigate the relationship between plasma levels of various tumour-related biomarkers and PAH. Methods: IGFBP-1, -2 and -7, along with other tumour-related biomarkers, were measured in plasma from 48 treatment-naïve PAH patients and 16 healthy controls, using proximity extension assays. Among the PAH patients, 33 were also studied at an early treatment follow-up. Results: Plasma IGFBP-1 (p <.003), IGFBP-2 (p <.001), IGFBP-7 (p <.008), vimentin (p <.001), carbonic anhydrase 9 (p <.001), S100A11 (p <.001), human epididymis protein 4 (p <.001) and folate receptor-α (p <.004) were elevated in PAH, compared to controls. IGFBP-1 exhibited the most interesting correlations to clinical parameters and was selected for further analyses. IGFBP-1 correlated specifically to N-terminal prohormone of brain natriuretic peptide (NT-proBNP) (r = 0.44, p <.002), mean right atrial pressure (r = 0.41, p <.004), venous oxygen saturation (r = –0.43, p <.003), cardiac index (r = –0.32, p <.03) and 6-minute walking distance (r = –0.29, p <.05). Plasma IGFBP-1 also correlated to risk scores based on the European Society of Cardiology/European Respiratory Society (ESC/ERS) PAH guidelines (r = 0.43, p <.003) and the REVEAL model (r = 0.46, p <.001). PAH patients with supra-median baseline IGFBP-1 levels showed a trend for worse overall survival than those with infra-median levels (p =.087). IGFBP-1 was unaltered between baseline and an early treatment follow-up. However, IGFBP-1 changes, between baseline and follow-up, correlated to changes in NT-proBNP (r = 0.48, p <.006). Conclusion: Plasma IGFBP-1 levels at PAH diagnosis show moderate association to NT-proBNP and hemodynamics as well as with ESC/ERS and REVEAL risk scores.

Detaljer

Författare
Enheter & grupper
Externa organisationer
  • Skåne University Hospital
Forskningsområden

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Kardiologi

Nyckelord

Originalspråkengelska
TidskriftScandinavian Cardiovascular Journal
StatusE-pub ahead of print - 2020 jun 29
PublikationskategoriForskning
Peer review utfördJa

Relaterad forskningsoutput

Habib Bouzina, 2020, Lund: Lund University, Faculty of Medicine. 65 s.

Forskningsoutput: AvhandlingDoktorsavhandling (sammanläggning)

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