OBJECTIVE To evaluate the variability of three-dimensional automatic counts of ovarian follicles measuring 2-6 to 2-10 mm during the menstrual cycle and to determine if this test can be applied outside the early follicular phase of the menstrual cycle. METHODS in a prospective observational study, serial transvaginal ultrasound scans were performed from April 20, 2013, to October 30, 2014, on...

Physiological hormonal fluctuations during the menstrual cycle, postpartum, and menopause have been implicated in the modulation of mood, cognition, and affective disorders. Taking into account that women's performance in memory tasks can also fluctuate with circulating hormones levels across the menstrual cycle, the cognitive performance in a working memory task for emotional facial expression...

OBJECTIVE To determine variability in the phases of the menstrual cycle among healthy, regularly cycling women. DESIGN A prospective descriptive study of a new data set with biological markers to estimate parameters of the menstrual cycles. PARTICIPANTS One hundred forty one healthy women (mean age 29 years) who monitored 3 to 13 menstrual cycles with an electronic fertility monitor and pro...

We investigated the cardiovascular responses to acute hypercapnia during the menstrual cycle. Eleven female subjects with regular menstrual cycles performed hypercapnic rebreathing tests during the follicular and luteal phases of their menstrual cycles. Ventilatory and cardiovascular variables were recorded breath by breath. Serum progesterone and estradiol were measured on each occasion. Serum...

During the period of menstruation, pregnancy and menopause which may be accompanied by eye a manifestation which is disturbing nature in women. We observed the changes in intraocular pressure occurring during various phases of menstrual cycle. In this study, 50 menstruating women were studied. To study the effect of menstruation, in 50 female volunteers, IOPs were measured after every 6 day of ...

The ability to detect small tumors is impaired in dense mammograms. It has been suggested that the sensitivity of mammograms could be lower in mammograms obtained during the luteal phase of the menstrual cycle. We examined the change in mammographic density from the follicular to the luteal phase of the menstrual cycle in 11 women. Although the average increase in densities was quite small (1.2...

BACKGROUND One of the unique characteristics of the female genital tract is the extensive tissue remodeling observed throughout the menstrual cycle. Multiple components of the extracellular matrix take part in this tissue rebuilding; however, the individual components involved have not been identified. METHODS In the present study, the expression of extracellular matrix proteins and selected ...

The whole gut transit rate has been measured in the follicular and luteal phases of the menstrual cycle in 18 healthy women in whom ovulation was confirmed biochemically. Mean transit time in the follicular phase (45.2 (2.7) h, mean (SEM) was not significantly different from the luteal phase (51.3 (4.1], p = 0.12. Stool weight was also not significantly different in the two phases (132 (7) v 12...

BACKGROUND Apoptosis occurs in late secretory and menstrual human endometrium and is thought to play an important role in endometrial physiology. Menstrual-like breakdown has been observed in vitro in endometrial explants. The purpose of this study was to assess the role of apoptosis in menstrual-like breakdown in human endometrial explants. METHODS Human endometrial tissue was obtained durin...

OBJECTIVES Variation in plasma hormone levels influences the neurobiology of brain regions involved in cognition and emotion processing. Fluctuations in hormone levels across the menstrual cycle could therefore alter cognitive performance and wellbeing; reports have provided conflicting results, however. The aim of this study was to assess whether objective assessment of cognitive performance a...