Normal FGF-21-Serum Levels in Patients with Carnitine Palmitoyltransferase II (CPT II) Deficiency.

Abstract:

:Fibroblast growth factor 21 (FGF-21) is known to be a biomarker for mitochondrial disorders. An upregulation of FGF-21 in serum and muscle of carnitine palmitoyltransferase I (CPT I) and carnitine palmitoyltransferase II (CPT II) knock-out mice has been reported. In human CPT II deficiency, enzyme activity and protein content are normal, but the enzyme is abnormally regulated by malonyl-CoA and is abnormally thermolabile. Citrate synthase (CS) activity is increased in patients with CPT II deficiency. This may indicate a compensatory response to an impaired function of CPT II. In this study, FGF-21 serum levels in patients with CPT II deficiency during attack free intervals and in healthy controls were measured by enzyme linked immunosorbent assay (ELISA). The data showed no significant difference between FGF-21 concentration in the serum of patients with CPT II deficiency and that in the healthy controls. The results of the present work support the hypothesis that in muscle CPT II deficiency, in contrast to the mouse knockout model, mitochondrial fatty acid utilization is not persistently reduced. Thus, FGF-21 does not seem to be a useful biomarker in the diagnosis of CPT II deficiency.

journal_name

Int J Mol Sci

authors

Motlagh Scholle L,Lehmann D,Joshi PR,Zierz S

doi

10.3390/ijms20061400

subject

Has Abstract

pub_date

2019-03-20 00:00:00

issue

6

issn

1422-0067

pii

ijms20061400

journal_volume

20

pub_type

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