Understanding Blood Flow in Pregnancy and Preeclampsia

H2S and Uterine Vasodilation in Pregnancy and Preeclampsia

NIH-funded research University of California-Irvine · NIH-11113857

This project explores how a natural substance called H2S helps blood vessels in the uterus widen during pregnancy, especially in conditions like preeclampsia.

Quick facts

Grant typeR01 grant
Study typeNIH-funded research
Funding institutionUniversity of California-Irvine NIH-funded
Lab location1 site (Irvine, United States)
Project IDNIH-11113857 on NIH RePORTER

What this research studies

During pregnancy, a woman's body undergoes significant changes to support the growing baby, including a dramatic increase in blood flow to the uterus. When this blood flow isn't sufficient, it can lead to serious conditions like preeclampsia and intrauterine growth restriction. We are looking into how a natural gas, hydrogen sulfide (H2S), helps the blood vessels in the uterus expand. Our work suggests that H2S plays a key role in this process, and we are studying how its role might be different in pregnancies affected by preeclampsia.

Who could benefit from this research

Good fit: This research is relevant for pregnant individuals, particularly those at risk for or experiencing preeclampsia or intrauterine growth restriction.

Not a fit: Patients not experiencing pregnancy complications related to uterine blood flow or preeclampsia would likely not directly benefit from this specific research.

Why it matters

Potential benefit: If successful, this work could lead to new ways to prevent or treat preeclampsia and improve outcomes for mothers and babies.

How similar studies have performed: While nitric oxide has been studied for its role in uterine blood flow, this research explores H2S as another important, less understood mediator, building on initial findings that H2S production increases during pregnancy.

Where this research is happening

Irvine, United States

Researchers

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page below.
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.