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NADPH Oxidase Role in Gestational Diabetes

Phase < 1
Recruiting
Research Sponsored by Anna Stanhewicz, PhD
Eligibility Criteria Checklist
Specific guidelines that determine who can or cannot participate in a clinical trial
Must have
18 years or older
Had gestational diabetes diagnosed by their obstetrician and confirmed according to the American College of Obstetricians and Gynecologists criteria for gestational diabetes
Must not have
Diagnosed or suspected hepatic or metabolic disease including diabetes
Current antihypertensive medication
Timeline
Screening 3 weeks
Treatment Varies
Follow Up at the study visit, an average of 4 hours

Summary

This trial examines how an enzyme might create harmful molecules that damage blood vessels in healthy women who had diabetes during pregnancy. Researchers use a small, minimally invasive technique to deliver medicine directly to the skin and take cell samples from a vein to study stress markers.

Who is the study for?
This trial is for women over 18 who had gestational diabetes within the last 5 years and are not currently pregnant. They mustn't have a history of certain conditions like preeclampsia, skin diseases, or metabolic disorders including current diabetes, and can't be on specific medications like statins or antihypertensives.
What is being tested?
The study is looking at how NADPH oxidase might cause poor blood vessel function in healthy women with past gestational diabetes by using substances like Acetylcholine and Insulin aspart to test vascular response.
What are the potential side effects?
Possible side effects from Acetylcholine may include flushing, low blood pressure, and sweating. Insulin aspart could cause reactions at the injection site, low blood sugar levels (hypoglycemia), itching or rash.

Eligibility Criteria

Inclusion Criteria

You may be eligible if you check “Yes” for the criteria below
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I am 18 years old or older.
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I was diagnosed with gestational diabetes by my doctor.

Exclusion Criteria

You may be eligible for the trial if you check “No” for criteria below:
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I have been diagnosed with or suspected to have liver disease or diabetes.
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I am currently taking medication for high blood pressure.

Timeline

Screening ~ 3 weeks
Treatment ~ Varies
Follow Up ~at the study visit, an average of 4 hours
This trial's timeline: 3 weeks for screening, Varies for treatment, and at the study visit, an average of 4 hours for reporting.

Treatment Details

Study Objectives

Study objectives can provide a clearer picture of what you can expect from a treatment.
Primary study objectives
microvascular acetylcholine-mediated dilation
microvascular insulin-mediated dilation
Secondary study objectives
endothelial cell NADPH oxidase expression

Trial Design

4Treatment groups
Experimental Treatment
Placebo Group
Group I: local apocynin perfusionExperimental Treatment2 Interventions
local apocynin is perfused through the microdialysis fiber to serve as the NADPH oxidase inhibited experimental treatment
Group II: local apocynin + L-NAME perfusionExperimental Treatment2 Interventions
local apocynin and L-NAME are perfused through the microdialysis fiber for dual inhibition of NADPH oxidase and nitric oxide synthase
Group III: local L-NAME perfusionExperimental Treatment2 Interventions
local L-NAME is perfused through the microdialysis fiber to inhibit nitric oxide synthase
Group IV: local lactated Ringer's perfusionPlacebo Group2 Interventions
lactated Ringer's is perfused through the microdialysis fiber to serve as the vehicle control
Treatment
First Studied
Drug Approval Stage
How many patients have taken this drug
Acetylcholine
2013
Completed Phase 2
~220
Insulin aspart
2011
Completed Phase 4
~4140

Research Highlights

Information in this section is not a recommendation. We encourage patients to speak with their healthcare team when evaluating any treatment decision.
Mechanism Of Action
Side Effect Profile
Prior Approvals
Other Research
Common treatments for Gestational Diabetes Mellitus (GDM) include metformin and insulin. Metformin decreases hepatic glucose production and improves insulin sensitivity, thereby lowering blood glucose levels. Insulin therapy supplements the body's insulin to manage blood sugar. The NADPH Oxidase Inhibitor, which reduces reactive oxygen species (ROS) production, is being studied for its potential to improve microvascular function by reducing oxidative stress, a key factor in GDM complications. These treatments are crucial for managing blood glucose levels and minimizing both maternal and fetal complications associated with GDM.
Efficacy and safety of metformin in the treatment of gestational diabetes: A protocol for systematic review and meta-analysis.

Find a Location

Who is running the clinical trial?

Anna Stanhewicz, PhDLead Sponsor
10 Previous Clinical Trials
382 Total Patients Enrolled
~22 spots leftby Jun 2026