Cardiac structure and function and effects of enzyme replacement therapy in patients with mucopolysaccharidoses I, II, IVA and VI.

Abstract:

BACKGROUND:While enzyme replacement therapy (ERT) has been shown to improve endurance and joint mobility for patients with mucopolysaccharidoses (MPS) I, II, IVA and VI, the impact of ERT on cardiac abnormalities remains uncertain. METHODS:Medical records and echocardiograms of 28 Taiwanese MPS patients (9 with MPS I, 7 with MPS II, 7 with MPS IVA, and 5 with MPS VI) treated with ERT for 1-10.8years were retrospectively reviewed. RESULTS:At start of ERT, z scores>2 were identified in 46% and 75% for left ventricular mass index (LVMI) and interventricular septum thickness in diastole (IVSd) in these patients, respectively. Twenty-four patients (86%) had valvular heart disease. After ERT, the mean IVSd z score of all patients decreased significantly from 3.87 to 2.57 (p=0.016). For 11 patients starting ERT before 12years of age, z scores for both LVMI and IVSd decreased significantly (p<0.01) after ERT. However, the condition of valve regurgitation or stenosis did not show improvement despite ERT. CONCLUSIONS:ERT was shown to be an effective therapy for reducing cardiac hypertrophy, with best results seen when ERT was started at an early age. ERT, however, had little impact on valvular heart disease.

journal_name

Mol Genet Metab

authors

Lin HY,Chuang CK,Chen MR,Lin SM,Hung CL,Chang CY,Chiu PC,Tsai WH,Niu DM,Tsai FJ,Lin SJ,Hwu WL,Lin JL,Lin SP

doi

10.1016/j.ymgme.2016.02.003

subject

Has Abstract

pub_date

2016-04-01 00:00:00

pages

431-7

issue

4

eissn

1096-7192

issn

1096-7206

pii

S1096-7192(16)30015-4

journal_volume

117

pub_type

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