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Objective: To evaluate relationships between hair cortisol levels and perceived stress in mothers who deliver preterm and term. We hypothesized that the rate of change in cortisol levels would be greater in the preterm delivery group. Methods: This preliminary study compared hair cortisol levels and Perceived Stress Scale (PSS) scores in predominately Caucasian mothers who delivered preterm (n = 22) and term (n = 30). We collected PSS and hair samples of ≥10 cm in length from mothers after delivery. Hair was segmented into three sections, and cortisol was measured using enzyme-linked immunosorbent assay. Results: The mean gestational age was 31.45 (SD = 4.2) weeks for preterm deliveries and 39.45 (SD = 1.1) for term. Cortisol differed significantly in the third trimester between mothers delivering term and preterm (t = 2.16, df = 48, p = .04) and trended toward significance in the second trimester (t = 1.88, df = 48, p = .06). PSS differed significantly between the two groups (t = −2.96, df = 50, p = .05). Our data did not provide support for our hypothesis. Conclusion: There appeared to be a blunted, flattened pattern of change in cortisol levels across gestation in the women who delivered preterm, suggesting diminished hypothalamic–pituitary–adrenal axis responsiveness in mechanisms that promote preterm labor. Future studies are needed to further evaluate best strategies for measuring the mechanisms of allostatic load during pregnancy along with the psychoneuroendocrine and immune triggers and placental responses that lead to premature birth. [ABSTRACT FROM AUTHOR]

Background: Toxoplasma gondii is an intracellular protozoan parasite with zoonotic potential that causes acute and chronic diseases, which has been associated with schizophrenia, depression, bipolar disorder, and suicidal behavior. Military personnel may be at increased risk for exposure to the parasite when deployed to countries with high prevalence rates.Methods: Women Veterans were recruited to participate in the study at an event to recognize women Veterans and later through e-mails. Blood samples were collected from 70 women Veterans (mean age: 47 years) and analyzed for T. gondii IgG titer. Participants completed a demographic instrument, Center for Epidemiologic Studies Depression scale, Profile of Mood States (POMS), and Post-Traumatic Stress Disorder Checklist-Military.Results: The infectivity rate was lower than the rate in the United States (11.4% [8 out of 70 were seropositive], but 6 of the 8 [75%] had been deployed outside the United States. Pearson correlations and t tests showed significant relationships between T. gondii seropositivity and Center for Epidemiologic Studies Depression score), POMS-depression, POMS-confusion, and POMS-anger subscale scores, and total mood disturbance score.Conclusions: This study is the first to describe biobehavioral relationships between chronic T. gondii infection, depression, and dysphoric moods in a military veteran population. [ABSTRACT FROM AUTHOR]