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Long-term response in biochemical markers of bone turnover during enzyme replacement therapy in a case-series of patients with Gaucher disease type I from Northern Greece.

TitleLong-term response in biochemical markers of bone turnover during enzyme replacement therapy in a case-series of patients with Gaucher disease type I from Northern Greece.
Publication TypeJournal Article
Year of Publication2016
AuthorsVargiami, E., Dimitriadou M., Economou M., Christoforidis A., & Zafeiriou D. I.
JournalHippokratia
Volume20
Issue2
Pagination153-159
Date Published2016 Apr-Jun
ISSN1108-4189
Abstract

BACKGROUND: Gaucher disease (GD) is a lysosomal storage disorder characterized by severe skeletal complications. Bone complications are an important cause of morbidity of GD and are thought to result from imbalance in bone remodeling. The objective of this case series was to analyze the long-term effect of enzyme replacement therapy on chemokines MIP-1a and MIP-1b, cytokines IL-3, IL-6, IL-10, and IL-12, osteoprotegerin (OPG) and osteocalcin (BGP), chitotriosidase, quantitative ultrasound sonography (QUS), bone magnetic resonance imaging (MRI) and dual-energy X-ray absorptiometry (DXA) in patients with GD in Northern Greece. In addition, the study aimed in investigating possible relationship between the above mentioned parameters.PATIENTS AND METHODS: Seven patients with GD type I (three males and four females) were included in the study. Mean age was 26.29 ± 15.34 years (range 7-47 years). Six patients were receiving enzyme replacement therapy (ERT), with 40-60 IU/kg of imiglucerase weekly, for a mean period of 36 months prior to study initiation. One patient started ERT after his inclusion in the study. The levels of MIP-1a, MIP-1b, IL-3, IL-6, IL-10, IL-12, OPG, BGP, chitotriosidase, bone imaging parameters assessed with two different techniques (QUS and DXA) and MRI data were estimated at baseline (T) and after two years on ERT.RESULTS: Chitotriosidase, MIP-1a, and IL-6 levels decreased in all patients after two years of ERT (p =0.05). In contrast, OPG and BGP levels increased (p =0.04 and p =0.02, respectively). Bone mineral density (BMD) demonstrated a progressive improvement with regards to the Z-score in all patients (p =0.05). The decrease in the plasma levels of MIP-1a strongly correlated with a decrease in the plasma levels of chitotriosidase. Additionally, decreased plasma levels of IL-6 were correlated with increased Z-score both at baseline (T) as well as two years later, in all patients. There was no correlation between MRI findings and any inflammatory biomarker.CONCLUSIONS: Measurement of serum markers in patients with GD under ERT could be used as an auxiliary tool in the monitoring of bone involvement, in combination with MRI imaging and BMD. However, larger studies involving higher numbers of GD patients are needed to confirm these conclusions. Hippokratia 2016, 20(2): 153-159.

Alternate JournalHippokratia
PubMed ID28416913
PubMed Central IDPMC5388517

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