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Published in: BMC Psychiatry 1/2018

Open Access 01-12-2018 | Research article

Combination therapy as a potential risk factor for the development of type 2 diabetes in patients with schizophrenia: the GOMAP study

Authors: Vasiliki Mamakou, Sophie Hackinger, Eleni Zengini, Evgenia Tsompanaki, Eirini Marouli, Ioannis Serafetinidis, Bram Prins, Athina Karabela, Eirini Glezou, Lorraine Southam, Nigel W. Rayner, Karoline Kuchenbaecker, Klea Lamnissou, Vassilis Kontaxakis, George Dedoussis, Fragiskos Gonidakis, Anastasia Thanopoulou, Nikolaos Tentolouris, Eleftheria Zeggini

Published in: BMC Psychiatry | Issue 1/2018

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Abstract

Background

Schizophrenia (SCZ) is associated with increased risk of type 2 diabetes (T2D). The potential diabetogenic effect of concomitant application of psychotropic treatment classes in patients with SCZ has not yet been evaluated. The overarching goal of the Genetic Overlap between Metabolic and Psychiatric disease (GOMAP) study is to assess the effect of pharmacological, anthropometric, lifestyle and clinical measurements, helping elucidate the mechanisms underlying the aetiology of T2D.

Methods

The GOMAP case-control study (Genetic Overlap between Metabolic and Psychiatric disease) includes hospitalized patients with SCZ, some of whom have T2D. We enrolled 1653 patients with SCZ; 611 with T2D and 1042 patients without T2D. This is the first study of SCZ and T2D comorbidity at this scale in the Greek population. We retrieved detailed information on first- and second-generation antipsychotics (FGA, SGA), antidepressants and mood stabilizers, applied as monotherapy, 2-drug combination, or as 3- or more drug combination. We assessed the effects of psychotropic medication, body mass index, duration of schizophrenia, number of hospitalizations and physical activity on risk of T2D. Using logistic regression, we calculated crude and adjusted odds ratios (OR) to identify associations between demographic factors and the psychiatric medications.

Results

Patients with SCZ on a combination of at least three different classes of psychiatric drugs had a higher risk of T2D [OR 1.81 (95% CI 1.22–2.69); p = 0.003] compared to FGA alone therapy, after adjustment for age, BMI, sex, duration of SCZ and number of hospitalizations. We did not find evidence for an association of SGA use or the combination of drugs belonging to two different classes of psychiatric medications with increased risk of T2D [1.27 (0.84–1.93), p = 0.259 and 0.98 (0.71–1.35), p = 0.885, respectively] compared to FGA use.

Conclusions

We find an increased risk of T2D in patients with SCZ who take a combination of at least three different psychotropic medication classes compared to patients whose medication consists only of one or two classes of drugs.
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Metadata
Title
Combination therapy as a potential risk factor for the development of type 2 diabetes in patients with schizophrenia: the GOMAP study
Authors
Vasiliki Mamakou
Sophie Hackinger
Eleni Zengini
Evgenia Tsompanaki
Eirini Marouli
Ioannis Serafetinidis
Bram Prins
Athina Karabela
Eirini Glezou
Lorraine Southam
Nigel W. Rayner
Karoline Kuchenbaecker
Klea Lamnissou
Vassilis Kontaxakis
George Dedoussis
Fragiskos Gonidakis
Anastasia Thanopoulou
Nikolaos Tentolouris
Eleftheria Zeggini
Publication date
01-12-2018
Publisher
BioMed Central
Published in
BMC Psychiatry / Issue 1/2018
Electronic ISSN: 1471-244X
DOI
https://doi.org/10.1186/s12888-018-1826-4

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