Abstract:
BACKGROUND:Open and randomized, double blind, placebo-controlled clinical trials have demonstrated clinical efficacy of infrared whole-body hyperthermia in treatment of major depressive disorder (MDD). Demonstration of antidepressant-like behavioral effects of whole-body hyperthermia in preclinical rodent models would provide further support for the clinical use of infrared whole-body hyperthermia for the treatment of MDD, and would provide additional opportunities to explore underlying mechanisms. METHODS:Adolescent male Wistar rats were habituated daily for 7days to an incubator (23°C, 15min), then exposed, 24h later, to an 85-min period of whole-body hyperthermia (37°C) or control conditions (23°C), with or without pretreatment with a subthreshold dose of the selective serotonin reuptake inhibitor, citalopram (5mg/kg, s.c., 23h, 5h, and 1h before behavioral testing in a 5-min forced swim test). Rectal temperature was monitored daily and immediately before and after the forced swim test to determine the relationship between body temperature and antidepressant-like behavioral responses. RESULTS:Whole-body hyperthermia and citalopram independently increased body temperature and acted synergistically to induce antidepressant-like behavioral responses, as measured by increased swimming and decreased immobility in the absence of any effect on climbing behaviors in the forced swim test, consistent with a serotonergic mechanism of action. CONCLUSIONS:Preclinical data support use of infrared whole-body hyperthermia in the treatment of MDD.
journal_name
Prog Neuropsychopharmacol Biol Psychiatryauthors
Hale MW,Lukkes JL,Dady KF,Kelly KJ,Paul ED,Smith DG,Raison CL,Lowry CAdoi
10.1016/j.pnpbp.2017.06.006subject
Has Abstractpub_date
2017-10-03 00:00:00pages
162-168issue
Pt Beissn
0278-5846issn
1878-4216pii
S0278-5846(16)30367-0journal_volume
79pub_type
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