Associations between brain-derived neurotrophic factor and estradiol in women's saliva.
OBJECTIVE: The aim of this study was to assess the relationship between brain-derived neurotrophic factor (BDNF) and sex hormones (estradiol [E2] and progesterone), using saliva samples obtained from healthy women.
METHODS: Forty female dental hygienist students were divided into groups according to being in the .....