About this trial
Establishment of regular menstrual cycles is a key component of reproductive maturation and a recognized vital sign for health and well-being. Irregular menstrual cycles are especially common for the first 2-3 years after an adolescent's first menstrual period (i.e., menarche), which delays the identification and diagnosis of early reproductive disturbances such as polycystic ovary syndrome (PCOS). The purpose of this research study is to determine whether the ovary can serve as a reliable predictor of normal or abnormal development by following the trajectory of ovarian morphology in conjunction with menstrual cyclicity using 3D transabdominal ultrasound imaging in a prospective cohort study of adolescents. A secondary objective is to identify potential environmental factors such as diet and the gut microbiome which influence the trajectory towards normal or abnormal reproductive development.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Female adolescents aged 9 to 17 years
Menarche within 11 months of the enrollment visit
University of Rochester site only: Family history of PCOS (i.e., mother or aunt)
Disqualifiers
Current or recent use of medications or supplements known or suspected to interfere with reproductive or metabolic function in the past 2 months (e.g., contraceptives, metformin, steroids, anti-seizure medications)
Untreated and/or unstable medical or mental health condition known or suspected to interfere with reproductive or metabolic function
Currently pregnant or breast feeding
History of ovarian surgery
Trial population
Female adolescents between the ages of 9 and 17 years who achieved menarche (i.e., very first period) within the past 11 months will be recruited.
Trial design
Cohort
Prospective
Treatments tested in this trial
Not listed
Trial groups
Trial outcomes
Primary outcomes
Ovarian size
Changes in ovarian size over the first 2y post-menarche will be assessed and compared across cohorts.
Follicle counts
Follicle counts, expressed as follicle number per ovary (FNPO) and follicle number per cross-section (FNPS), will be assessed over the first 2y post-menarche and compared across cohorts. Numbers of large follicles (\>10 mm diameter) and small follicles (\<10 mm diameter) will also be compared across cohorts.
Menstrual cycle status
Menstrual cycle status (i.e., regular versus irregular menstrual cycles) will be assessed using menstrual cycle records maintained by participants over the course of the study. Changes in menstrual cycle status over the 2y post-menarche and relationships between menstrual cycle status and other physiological and lifestyle factors will be examined.
Secondary outcomes
Body composition
Changes in percent body fat, obtained using a bioimpedence scale, will be assessed over the first 2y post-menarche and compared across cohorts.
Leutenizing hormone (LH), follicle stimulating hormone (FSH), estradiol, progesterone, anti-mullerian hormone, free and total testosterone, and androstenedione
Serum levels of these reproductive hormones will be assessed over the first 2y post-menarche and compared across cohorts.
Sleep quality
Sleep quality will be assessed using two questionnaires: the Morningness-Eveningness Scale for Children and the Children's Report of Sleep Patterns. Sleep quality will be assessed over the first 2y post-menarche and compared across cohorts.
Dietary composition
Dietary composition (i.e., macro and micronutrient totals, total energy intake) will be assessed using two 24-Hour Food Frequency Questionnaires administered at each gynecological time point.
Sponsors and contacts
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Cornell University
Lead sponsor
Children's Mercy Hospital Kansas City
Collaborator