This study investigated the changes of prostate specific antigen (PSA) concentrations in serum and saliva of women during the menstrual cycle. Thirty healthy volunteers (age 23-35 yr) were enrolled in the study. During the menstrual cycle, serum and saliva PSA concentrations on days 9 (follicular phase) and 14 (mid-cycle) were significantly higher than on days 4 (early follicular phase) and 21 ...

This study was designed to determine the efficiency and rate of testosterone (T) retrograde transfer during the follicular and luteal phase of the estrous cycle in gilts (n=27). The efficiency and the rate of the retrograde transfer of T from the ovarian effluent into blood supplying the ovary were determined for the first time under in vivo conditions. Ovarian arterial blood concentration of T...

Despite a large number of functional neuroimaging investigations of emotion processing in schizophrenia, very few have included women. In the present study 21 schizophrenia and 23 healthy women underwent functional MRI (3T) on two occasions (during the follicular and luteal phase of their menstrual cycle) while viewing blocks of emotionally negative, positive and neutral images. During exposure...

Prolactin concentrations were measured in hourly integrated blood samples collected over 24 h in normally cyclic women during the follicular (N = 8) and the luteal (N = 7) phases of the menstrual cycle. Prolactin concentrations were increased during the evening in all the subjects when compared with the rest of the day-time wake-period. This rise was unrelated to sleep, and peak concentrations ...

Basal energy expenditure (BEE) was determined in 291 pregnant women, age 20-35 years, using Benedict Roth Metabolism Apparatus. A control study was undertaken in 38 non pregnant women during both follicular and luteal phases of menstrual cycle respectively. The mean +/- SD of BEE were found to be 34.04 +/- 3.05, 35.85 +/- 2.60 and 39.69 +/- 2.75 Kcal/m2/hr during first, second and third trimest...

Introduction: Steroid sex hormones influence every system of the body including the oral cavity. It influences the composition and flow rate of saliva. The aim was to estimate the changes in human whole salivary pH and salivary leukocyte count during the various phases of menstrual cycle. Materials and method: 30 female patients between 18-35 years were included in the study. They were free fro...

We examined the effects of menstrual cycle phase and oral contraceptive (OC) use on peak oxygen consumption (VO(2 peak)). Six moderately active, eumenorrheic women (25.5 +/- 1.5 yr) were studied before and after 4 mo of OC. Subjects were tested during the follicular and luteal phases before OC and the inactive and high-dose phases after OC. Before OC, there were no significant differences betwe...

It is well known that pregnancy reduces anesthetic requirements in response to various noxious stimuli. However, there have been no detailed reports concerning functional changes in nerve fibers during pregnancy. Using a Neurometer, a recently available commercial quantitative sensory monitor, we measured current perception threshold (CPT) values for three frequencies corresponding to the stimu...

During the early follicular phase in the menstrual cycle, antral follicle sizes are often markedly heterogeneous. These follicular size discrepancies may, at least in part, result from the early exposure of FSH-sensitive follicles to gradient FSH concentrations during the preceding luteal phase. In addition, they potentially affect the results of ovarian stimulation. Indeed, pre-existing follic...

It is recognised that ovarian factors, including steroid and protein hormones, are critical in the feedback regulation of pituitary gonadotropins; however, their individual contributions are less defined. The aim of this study was to explore the reciprocal relationships between ovarian and pituitary hormones across the normal ovulatory menstrual cycle as women age. FSH, LH, oestradiol, progeste...