title: Potential involvement of the mitochondrial unfolded protein response in depressive-like symptoms in mice.
abstract: Many evidences strongly suggest that a mitochondrial deficit is implicated in major depression. A mitochondrial deficit leads to mitochondrial stress responses, including the mitochondrial unfolded protein response (UPRmt), which is associated with certain brain disorders such as spastic paraplegia and Parkinson's disease. However, there is no evidence regarding the relationship between depressive disorder and UPRmt. Mice treated with chronic restraint stress showed significant depressive-like behaviors in the tail suspension and forced swim tests, decreased oxygen consumption rate, and increased levels of molecules associated with UPRmt such as Hspa9, Hspd1, Ubl5, Abcb10, and ClpP. All of the UPRmt-related molecules were significantly correlated with depressive-like behavior in the forced swim test. Thus, the present study is to reveal a relationship between the UPRmt and depressive disorder, suggesting that the UPRmt is a potential drug target for depressive disorders.
authors.affiliation: Department of Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan. Electronic address: ukikambe@m3.kufm.kagoshima-u.ac.jp.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Kambe
authors.affiliation: Department of Pharmacology, Graduate School of Medical and Dental Sciences, Kagoshima University, Kagoshima 890-8544, Japan.
authors.forename: Atsuro
authors.initials: A
authors.lastname: Miyata
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism; D003863:Depression / Q000209:etiology / Q000378:metabolism* / Q000523:psychology; D015227:Lipid Peroxidation; D008297:Male; D008315:Malondialdehyde / Q000378:metabolism; D008810:Mice, Inbred C57BL; D008928:Mitochondria / Q000378:metabolism*; D010101:Oxygen Consumption; D012149:Restraint, Physical; D013315:Stress, Psychological / Q000150:complications / Q000378:metabolism; D056811:Unfolded Protein Response
chemical_list: D008315:Malondialdehyde
keywords: Depressive-like behavior; Major depression; Mitochondria; Mitochondrial unfolded protein response (UPRmt)