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Right ventricular sugars and fats in chronic thromboembolic pulmonary hypertension.

Abstract：

BACKGROUND/OBJECTIVES:Several studies have already shown the correlation between the right ventricle (RV) hemodynamic values and either glucose uptake or fatty acid uptake in the RV, respectively. However, there are few studies to compare the RV metabolic alteration before and after treatment for pulmonary hypertension. The aims of this study are to assess right ventricular glucose and fatty acid in chronic thromboembolic pulmonary hypertension (CTEPH) patients before and after pulmonary thromboendarterectomy and to examine whether there is a correlation between right ventricular glucose and fatty acid uptake. METHODS:To assess glucose and fatty acid accumulation in the RV, [(18)F] fluoro-2-deoxyglucose (FDG)-positron emission tomography (PET) and (123)I-β-methyl iodophenyl pentadecanoic acid (BMIPP) imaging were performed in CTEPH patients before (FDG: n=20, BMIPP: n=13) and after (FDG: n=12, BMIPP: n=8) thromboendarterectomy. RESULTS:Both [(18)F] FDG uptake and (123)I-BMIPP uptake in RV of post-PEA patients obviously decreased after this operation procedure (p<0.01). The right ventricle [(18)F] FDG uptake was also significantly correlated with (123)I-BMIPP uptake (r=0.45, p=0.04). CONCLUSIONS:In this study, we observed that both glucose and fatty acid accumulated in the RV of patients with CTEPH. Although the exact details of the altered energy metabolism in the stressed RV remain unknown, this is the first study to evaluate both glucose and fatty acid uptake before and after thromboendarterectomy in patients with CTEPH, even though the number of the patient is limited.

journal_name

Int J Cardiol

journal_title

International journal of cardiology

authors

Sakao S,Daimon M,Voelkel NF,Miyauchi H,Jujo T,Sugiura T,Ishida K,Tanabe N,Kobayashi Y,Tatsumi K

doi

10.1016/j.ijcard.2016.06.010

subject

Has Abstract

pub_date

2016-09-15 00:00:00

pages

143-9

eissn

0167-5273

issn

1874-1754

pii

S0167-5273(16)31019-1

journal_volume

219

pub_type

杂志文章

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