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Menstrual Differences in Airway Inflammation in Asthma
NCT00584441 · View on ClinicalTrials.gov ↗
Study Summary
Asthma is a chronic inflammatory lung disease characterized by airway hyper-responsiveness and reversible airway obstruction. Over the last decade, the prevalence of asthma is on the rise and it disproportionately affects more women than men. As much as 40% of women with asthma are known to have worsening of asthma symptoms and lung function prior to menstruation. This syndrome is being increasingly recognized as premenstrual asthma (PMA). The pathologic differences in female asthmatics with and without this syndrome are not known. The evidence regarding the role of sex hormones has been contradicting. We propose an observational cohort study to examine the changes in airway inflammation in women with asthma in relation to their menstrual cycle and their association with sex hormone levels. In addition we will include women on oral contraceptives to determine their effect on airway inflammation and asthma symptoms. We hypothesis that: * Women with premenstrual asthma will show increased indices of airway inflammation in various phases the monthly menstrual cycle. * In women with premenstrual asthma, a change in serum estradiol/progesterone ratio during the late luteal phase is associated with worsening of airway inflammation, air flow limitation and asthma symptoms. * The use of oral contraceptives is associated with suppression of the cyclical changes in airway inflammation due to lack of fluctuations in estradiol and progesterone levels. Recruited subjects will be asked to record asthma symptom scores, morning Peak Expiratory Flow Rate (m-PEFR) and rescue asthma medication (β2-agonist) used daily during the one month screening period to identify women with and without pre-menstrual asthma. Asthmatic women with regular menstrual cycles will be evaluated in their follicular phase (days 5-8) and luteal phase (days 21-24) and women on oral contraceptive pills (OCP) will be evaluated on days 9-12 of their OCP cycle and during the days 25-28, off of OCP consecutively
Conditions Studied
Study Locations (1)
Texas
- University of Texas Medical Branch — Galveston
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 6 participants |
| Start Date | 2007-09 |
| Est. Completion | 2010-02 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT00584441
The ClinicalTrials.gov registry entry for NCT00584441 describes a study currently listed as completed. It is categorized as an unspecified phase, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 6 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is The University of Texas Medical Branch, Galveston, which has 132 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 1 condition, with Asthma appearing as the primary indexed condition, and to 0 interventions. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT00584441 reports 1 study location spanning 1 distinct geographic area — top geographies include Texas. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT00584441 about?
NCT00584441 is a clinical study titled "Menstrual Differences in Airway Inflammation in Asthma". Asthma is a chronic inflammatory lung disease characterized by airway hyper-responsiveness and reversible airway obstruction. Over the last decade, the prevalence of asthma is on the rise and it disproportionately affects more women than men. As much as 40% of women with asthma are known to have wor...
What is the current status of trial NCT00584441?
This trial is currently completed. The enrollment target is 6 participants. The study started on 2007-09. Estimated completion is 2010-02.
What conditions does trial NCT00584441 study?
This clinical trial studies the following conditions: Asthma. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
Who is sponsoring clinical trial NCT00584441?
This trial is sponsored by The University of Texas Medical Branch, Galveston, which has 132 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT00584441 being conducted?
This trial has 1 study location across Texas. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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