Expression levels of interferon-gamma and type 2 deiodinase in patients diagnosed with recurrent depressive disorders

作者：Galecka, Elzbieta^*; Talarowska, Monika; Maes, Michael; Su, Kuan Pin; Gorski, Pawel; Kumor Kisielewska, Anna; Szemraj, Janusz

来源：Pharmacological Reports, 2018, 70(1): 133-138.

DOI：10.1016/j.pharep.2017.08.009

• Type 2 deiodinase
• Interferon-gamma
• Depressive disorder
• Thyroid hormone
• Inflammation

Background: Thyroid hormones (TH) are involved in modulation of the immune system and inflammation. TH dysregulation is associated with depressive disorders. The iodothyronine deiodinases (DIOs), the key enzymes for TH synthesis, can be affected and induced by pro-inflammatory cytokines. We aimed to investigate the levels of and correlation between type 2 DIO (DIO2) and interferon-gamma (IFN-gamma) in patients with recurrent depressive disorders (rDD).
Methods: Data from 91 rDD patients and 105 healthy controls were analyzed. The diagnoses are based on the ICD-10 criteria (F33.0-F33.8). Expression levels of DIO2 and IFN-gamma were estimated using the method based on the polymerase chain reaction and the enzyme-linked immunosorbent assay (ELISA).
Results: The DIO2 expression on mRNA/protein levels in rDD patients (both female and males) was reduced as compared with the control subjects. No correlation between DIO2 and IFN-gamma expression was observed.
Conclusion: This is the first study to reveal that one may cautiously suggest that DIO2 may be involved in the development and/or progression of rDD. The mechanisms of TH regulation on depression, however, need further investigation.

• 出版日期2018-2
• 单位中国医科大学; 迪肯大学