PMID- 29315742 OWN - NLM STAT- MEDLINE DCOM- 20180524 LR - 20180524 IS - 1365-2230 (Electronic) IS - 0307-6938 (Linking) VI - 43 IP - 3 DP - 2018 Apr TI - Depression- and anxiety-like behaviour is related to BDNF/TrkB signalling in a mouse model of psoriasis. PG - 254-261 LID - 10.1111/ced.13378 [doi] AB - BACKGROUND: The prevalence of anxiety and depression is significantly higher in individuals with psoriasis than in the general population. Clinical data also show that anti-anxiety and antidepression drugs can reduce skin lesions in patients with psoriasis, but the actual mechanism is still poorly understood. AIM: To investigate whether brain-derived neurotrophic factor (BDNF) and tropomyosin receptor kinase B (TrKB) signalling plays a role in the mechanism underlying psoriasis with depression and anxiety behaviours. METHODS: Expression of BDNF and tropomyosin receptor kinase B (TrKB) in the K5.Stat3C mouse, an animal model of psoriasis, were investigated by reverse transcription PCR and Western blotting. Anxiety-like behaviours in the elevated-plus maze test and changes in BDNF/TrkB that have been implicated in depression and anxiety behaviours were measured. Skin lesions induced by 12-O-tetradecanoyl phorbol-13-acetate (TPA) were also measured when the mice were administered fluoxetine and K252a, an antagonist of TrkB. RESULTS: The antidepression and anti-anxiety drug fluoxetine reduced TPA-induced skin lesions and increased expression of BDNF and TrkB in K5.Stat3C mice. More importantly, the effects of fluoxetine were reversed by the TrkB antagonist K252a. CONCLUSIONS: BDNF/TrkB signalling participates in the pathological mechanism of depression and anxiety behaviours in psoriasis. Our findings provide a new therapeutic strategy for the treatment of skin lesions in psoriasis. CI - (c) 2018 British Association of Dermatologists. FAU - JiaWen, W AU - JiaWen W AD - Department ofDermatology, Medical School of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China. FAU - Hong, S AU - Hong S AD - Department ofNeurology, Second Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China. FAU - ShengXiang, X AU - ShengXiang X AD - Department ofDermatology, Medical School of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China. FAU - Jing, L AU - Jing L AD - Department ofDermatology, Medical School of Xi'an Jiaotong University, Xi'an, 710004, Shaanxi Province, China. LA - eng PT - Journal Article DEP - 20180108 PL - England TA - Clin Exp Dermatol JT - Clinical and experimental dermatology JID - 7606847 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (STAT3 Transcription Factor) RN - 0 (Stat3 protein, mouse) RN - 01K63SUP8D (Fluoxetine) RN - EC 2.7.10.1 (Receptor, trkB) SB - IM MH - Animals MH - Anxiety/*complications MH - Behavior, Animal MH - Brain-Derived Neurotrophic Factor/*metabolism MH - Depression/*complications MH - Disease Models, Animal MH - Fluoxetine/pharmacology MH - Humans MH - Mice MH - Mice, Transgenic MH - Psoriasis/*metabolism/*psychology MH - Random Allocation MH - Receptor, trkB/*metabolism MH - STAT3 Transcription Factor MH - Signal Transduction/drug effects EDAT- 2018/01/10 06:00 MHDA- 2018/05/25 06:00 CRDT- 2018/01/10 06:00 PHST- 2017/01/23 00:00 [accepted] PHST- 2018/01/10 06:00 [pubmed] PHST- 2018/05/25 06:00 [medline] PHST- 2018/01/10 06:00 [entrez] AID - 10.1111/ced.13378 [doi] PST - ppublish SO - Clin Exp Dermatol. 2018 Apr;43(3):254-261. doi: 10.1111/ced.13378. Epub 2018 Jan 8.