期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 23, 期 17, 页码 -出版社
MDPI
DOI: 10.3390/ijms23179591
关键词
insulin-like growth factor (IGF-2); insulin-like growth factor binding protein 7 (IGFBP-7); schizophrenia (SZ); first episode (FE); drug-naive
资金
- Galicia Sur Health Research Institute
This study aimed to evaluate whether the alterations in insulin-like growth factor 2 (IGF-2) and IGF binding protein 7 (IGFBP-7) in schizophrenia patients are related to the psychiatric disorder itself or are a result of antipsychotic treatment. The results showed that drug-naive first episode patients had lower levels of IGF-2 compared to controls, but no significant change in IGFBP-7 levels. However, both IGF-2 and IGFBP-7 significantly increased after atypical antipsychotic treatment in these patients. Chronic patients, on the other hand, had higher levels of both proteins compared to controls.
Insulin-like growth factor 2 (IGF-2) and IGF binding protein 7 (IGFBP-7) have been related to schizophrenia (SZ) due to their implication in neurodevelopment. The purpose of this study was to assess whether the alterations in IGF-2 and IGFBP-7 in SZ patients are intrinsically related to the psychiatric disorder itself or are a secondary phenomenon due to antipsychotic treatment. In order to test this hypothesis, we measured plasma IGF-2 and IGFBP-7 in drug-naive first episode (FE) and multiple episodes or chronic (ME) SZ Caucasian patients who have been following treatment for years. A total of 55 SZ patients (FE = 15, ME = 40) and 45 healthy controls were recruited. The Positive and Negative Syndrome Scale (PANSS) and the Self-Assessment Anhedonia Scale (SAAS) were employed to check schizophrenic symptomatology and anhedonia, respectively. Plasma IGF-2 and IGFBP-7 levels were measured by Enzyme-Linked Immunosorbent Assay (ELISA). The FE SZ patients had much lower IGF-2, but not IGFBP-7, than controls. Moreover, both IGF-2 and IGFBP-7 significantly increased after atypical antipsychotic treatment (aripiprazole, olanzapine, or risperidone) in these patients. On the other hand, chronic patients showed higher levels of both proteins when compared to controls. Our study suggests that circulatory IGF-2 and IGFBP-7 increase after antipsychotic treatment, regardless of long-term conditions and being lower in drug-naive FE patients.
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