Related Experiment Video
Updated: Jun 25, 2026

A Novel Method for Involving Women of Color at High Risk for Preterm Birth in Research Priority Setting
Published on: January 12, 2018
Progesterone for preterm birth prevention: an evolving intervention
Alan Thevenet N Tita1, Dwight J Rouse
1Center for Women's Reproductive Health, Maternal-Fetal Medicine Division, Department of Obstetrics and Gynecology, University of Alabama at Birmingham, Birmingham, AL, USA.
Insights
Progesterone effectively reduces recurrent preterm birth (PTB) in women with a history of spontaneous PTB. Further research is needed to determine optimal use and benefits in other scenarios.
Area of Science:
- Obstetrics and Gynecology
- Pharmacology
Background:
- Preterm birth (PTB) remains a significant challenge in maternal and infant health.
- Progesterone is being investigated for its potential role in preventing PTB.
Purpose of the Study:
- To review emerging data on the efficacy of progesterone in preventing preterm birth.
- To focus on pharmacologic aspects and risk factor-specific outcomes.
Main Methods:
- PubMed database search for randomized clinical trials (RCTs) and meta-analyses from January 1, 2000, onwards.
- Review of 238 abstracts, supplemented by bibliographic searches, focusing on 17 relevant reports.
Main Results:
- Synthetic intramuscular 17-alpha-hydroxyprogesterone effectively reduces recurrent PTB in women with a history of spontaneous PTB.
- Vaginally administered natural progesterone showed potential in reducing early PTB in women with a foreshortened cervix.
- Evidence is inconclusive regarding progesterone's benefits in arrested preterm labor and its impact on perinatal morbidity or mortality.
Conclusions:
- Progesterone demonstrates efficacy in reducing PTB for specific patient groups.
- Further investigation is required to identify optimal candidates and formulations for progesterone therapy to prevent PTB.
Abstract:
We sought to review emerging data on the use of progesterone to prevent preterm birth (PTB). Using the terms "preterm or premature" and "progesterone" we queried the PubMed database, restricting our search to January 1, 2000, forward and selected randomized clinical trials (RCTs) and metaanalyses of RCTs that evaluated the use of progesterone for the prevention of PTB. We reviewed 238 abstracts and supplemented our review by a bibliographic search of selected reports. We focused on the pharmacologic aspects of progesterone and risk factor-specific outcomes. We identified a total of 17 relevant reports: 8 individual RCTs, 6 metaanalyses, and 3 national guidelines. Individual trials and metaanalyses support that synthetic intramuscular 17-alpha-hydroxyprogesterone effectively reduces the incidence of recurrent PTB in women with a history of spontaneous PTB. One trial found that vaginally administered natural progesterone reduced the risk of early PTB in women with a foreshortened cervix. The data are suggestive but inconclusive about: (1) the benefits of progesterone in the setting of arrested preterm labor; and (2) whether progesterone lowers perinatal morbidity or mortality. In some women, progesterone reduces the risk of PTB. Further study is required to identify appropriate candidates and optimal formulations.
Related Concept Videos
Intrauterine Drug Delivery Systems
Drugs for Peptic Ulcer Disease: Prostaglandin Analogs as Mucosal Protective Agents
Non-steroidal anti-inflammatory drugs (NSAIDs) can induce peptic ulcers by inhibiting cyclooxygenase, decreasing...
Birth Control Methods
Teratogenicity
Hormonal Control of the Ovarian Cycle
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Treatment for Pulmonary Arterial Hypertension: Prostacyclin Receptor Agonists
These agonists bind to the IPR receptor situated on the plasma membrane of the pulmonary artery smooth muscle cells. This binding triggers a cascade of reactions known as the GS-AC-cAMP-PKA pathway. This pathway results in the relaxation of smooth muscle...
