Learn More
This paper summarizes the data on nutrient uptake and soil responses in opentop chambers planted with ponderosa pine (Pinus ponderosa Laws.) treated with both N and CO2. Based upon the literature, we hypothesized that 1) elevated CO2 would cause increased growth and yield of biomass per unit uptake of N even if N is limiting, and 2) elevated CO2 would cause(More)
OBJECTIVES To define relation between mood and concentrations of progesterone and cortisol during perinatal period to test hypothesis that rapid physiological withdrawal of steroid hormones after delivery is associated with depression. DESIGN Prospective study of primiparous women from two weeks before expected date of delivery to 35 days postpartum. (More)
Monoamine neuroleptics alter rodents responses to immunization, suggesting that norepinephrine (NE) and serotonin (5HT) are neuroimmunomodulatory in these animals. Although endocrine factors participate in their mechanism(s) of action, recent studies suggest that NE and 5HT also interact more directly with immunocompetent cells. This review provides an(More)
The variations in concentrations of testosterone and cortisol in saliva samples collected by 4 healthy young men whilst on a scientific expedition from Britain to Spitzbergen are described. The rhythms observed in steroid concentrations in saliva were characterized mathematically by cosinor analysis of the levels of testosterone and cortisol determined in(More)
The purpose of this paper is to describe the effects of CO2 and N treatments on soil pCO2, calculated CO2 efflux, root biomass and soil carbon in open-top chambers planted with Pinus ponderosa seedlings. Based upon the literature, it was hypothesized that both elevated CO2 and N would cause increased root biomass which would in turn cause increases in both(More)
We describe a direct radioimmunoassay for cortisol in 10-microliter volumes of parotid saliva or whole saliva. Binding proteins are absent from these fluids, as demonstrated by the excellent correlation between results for samples assayed directly and by a comparison procedure involving extraction with 1,2-dichloroethane. The direct assay is specific,(More)
The current status of the saliva dexamethasone suppression test (DST) is discussed and results from the literature reviewed. Evidence is presented that demonstrates that the efficacy of the salivary-based test is equal to that of the plasma DST provided that specifically developed radioimmunoassays are used for determination of salivary cortisol. Such(More)
The pharmacokinetic properties of platelets make these vascular elements a potential and convenient model for serotoninergic neurons. Because we encountered several difficulties in preliminary platelet serotonin (5HT) uptake assays, we explored the influence of several assay factors on the parameters obtained. We found that a citrate-dextrose anticoagulant(More)
Salivary testosterone (ST) levels were measured in 84 boys aged 7.3-16.2 from the Edinburgh Growth Study. The correlation coefficient between matched plasma/saliva samples was 0.88. Six samples were collected over the course of one day from 0900 to 2100 h each month in the majority of the children for 4 consecutive months. Mean daily ST levels showed a(More)