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CompletedNCT00757185Updated Jul 4, 2016

Compromised Microcirculation in Women With Polycystic Ovary Syndrome

An Early Phase 1 interventional study of ganirelix acetate and methyl testosterone in Polycystic Ovary Syndrome, sponsored by Yale University. Completed at 1 site in United States. Open to female participants aged 18 Years to 35 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2016-07-04.

Sponsored by Yale University · Early Phase 1, Interventional, and Basic science

Phase
Early Phase 1
Study type
Interventional
Enrollment
28
Allocation
Non-randomized
Ages
18 Years to 35 Years
Sex
Female
01

Study summary

The scientific aims of the study are to determine how peripheral microcirculatory responsiveness is altered in obese women with Polycystic Ovary Syndrome (PCOS) during local heating and to determine the mechanism for testosterone effects on peripheral microcirculatory responsiveness in women with PCOS.

Read the detailed description

In these studies, we propose to use the skin as a relatively non-invasive model to examine cardiovascular and endothelial function in obese women with and without PCOS. Data have indicated an important role for testosterone in influencing the peripheral microcirculation. While testosterone can lead to vasodilation in the peripheral microcirculation in both men and in women without PCOS, testosterone appears to induce vasoconstriction in women with PCOS. The differential response between women with and without PCOS, and between men and women may be the result of differential ET-1 actions in the vessel, and regulated by the receptor subtype is involved in these actions.

02

Conditions studied

  • Polycystic Ovary Syndrome

Keywords

  • skin blood flow
  • microcirculation
03

In context

Polycystic Ovary Syndrome

975 studies on the registry are indexed under Polycystic Ovary Syndrome; 177 are open to participants now.

This study's enrollment of 28 is below the median of 70 across 710 interventional studies indexed under Polycystic Ovary Syndrome.

Browse Polycystic Ovary Syndrome studies →

Lead sponsor

Yale University is the lead sponsor of 1,763 studies on the registry; 292 are open to participants now.

Of its 217 completed or terminated interventional studies of FDA-regulated products, 128 (59%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 35 Years
Sexes eligible
Female
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Obese women (18-35) years with and without PCOS

Exclusion criteria

Exclusion Criteria:

  • Conditions that would preclude safe use of hormones
05

Study design

Phase
Early Phase 1
Primary purpose
Basic science
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
28 participants (actual)

Study arms

  • Experimental
    1

    GNRH antagonist alone

    Drug: ganirelix acetate

  • Experimental
    2

    GnRH with Testosterone

    Drug: methyl testosterone

Interventions

  • GnRH antagonist, subcutaneous injection, 0.25 mg/day for 21 days

    Also known as: Antagon

  • testosterone, oral administration, day 5 of GnRH administration, 2.5 mg/day

06

What researchers measure

Primary outcomes

  1. Skin blood flow and cutaneous vascular conductance

    Time frame: 6 non consecutive days

07

Study locations

1 site
  • John B. Pierce Laboratory
    New Haven, Connecticut 06520, United States
08

References and documents

Publications

  • Young BE, Colburn A, Oldham ZR, Berbrier D, Usselman CW, Stone T, Fadel PJ, Stachenfeld NS. Combined androgen excess polycystic ovary syndrome and obesity are associated with elevated beat-to-beat blood pressure variability in adult women. Am J Physiol Heart Circ Physiol. 2026 Aug 1;331(2):H374-H381. doi: 10.1152/ajpheart.00275.2026. Epub 2026 Jun 15. PubMed 42294856 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 4, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00757185
Lead sponsor
Yale University
Responsible party
Sponsor
First posted
Sep 23, 2008
Start date
Feb 2008
Primary completion
Apr 2012
Completion
Dec 2012
Last update
Jul 4, 2016

Study contacts

Nina Stachenfeld, PhD
principal investigator · John B. Pierce Laboratory
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2016. You cannot join it, but the record below documents what was studied.

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Studies of the drugs tested here: Ganirelix · Methyltestosterone

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