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A bacterial species that causes chorioamnionitis—an infection of the placenta and fetal membranes that often leads to preterm birth—relies on a gene for metal tolerance to hijack immune cells, suggests a study in mice funded by the National Institutes of Health. The findings indicate that strategies to target the gene and its products could eliminate one of the most common causes of preterm birth.

The Division of Intramural Research provides fundamental knowledge about the nature and behavior of living systems through basic, clinical, and population-based research.

Steroid treatment before birth appears to improve survival and reduce complications among extremely preterm infants, according to a study funded by the National Institutes of Health. Antenatal steroid therapy, given to women at risk of preterm delivery, causes the fetal lungs to mature and has been shown to improve survival and reduce complications among infants born from 24 to 34 weeks of pregnancy. However, previous studies of the treatment for infants born between the 22nd and 23rd week—those at greatest risk for death and disability—were inconclusive.

The National Institutes of Health is offering up to $8 million in cash prizes to accelerate development of technologies to improve maternal health outcomes for those who live in areas lacking access to maternity care.

A treatment to move blood from the umbilical cord into an infant’s body may improve the overall health of newborns classified as non-vigorous—limp, pale and with minimal breathing, suggests a study funded by the National Institutes of Health. The procedure, known as umbilical cord milking, involves gently squeezing the cord between the thumb and forefinger and slowly pushing the blood into the abdomen.

Researchers funded by the National Institutes of Health have identified a protein that allows the uterus to stretch to accommodate a developing fetus. When the protein is deactivated, the uterus begins the contractions culminating in labor. The findings raise the possibility of preventing preterm labor by developing drugs to target the protein.

The increase in pregnancy complications linked to air pollution exposure could result from the pollutants’ direct effects on the placenta, suggests a study in mice funded by the National Institutes of Health. Placentas of mice exposed to a mixture of common urban air pollutants before and during pregnancy were inflamed and had a loss of blood vessel cells. The study authors say the findings could provide insight into how air pollution might affect pregnancies and lead to strategies for preventing pregnancy complications.

The placenta supports pregnancy and influences the lifelong health of both mother and child. Yet it is the least understood, and least studied, of all human organs. In a guest post for the NIH Director’s Blog, Dr. Bianchi discusses work from NICHD’s Human Placenta Project to understand how the placenta functions in real time during pregnancy.

Infertility treatments with ovulation drugs or intrauterine insemination—in which sperm is placed directly into the uterus—are associated with a higher likelihood of preterm birth, suggests a study funded by the National Institutes of Health.

Hydrocortisone is no more effective than placebo at preventing damage that can result from oxygen and ventilator therapy necessary to keep preterm infants alive, according to research funded by the National Institutes of Health. The study of a potential treatment for the condition, known as bronchopulmonary dysplasia, appears in the New England Journal of Medicine.

Life-threatening pregnancy complications known as severe maternal morbidity (SMM) appear to be associated with an increased length of hospital stay for infants and an increase in the cost of caring for them, suggests a study funded by the National Institutes of Health. The findings support the hypothesis that infants of mothers with SMM may also be at risk for severe complications. The authors concluded that helping patients to reduce their risk factors—in early pregnancy or before conception—may reduce the chances for SMM and improve the health of infants.

How early can a baby be born and not only survive but thrive? Dr. Bianchi discusses continued progress in saving extremely preterm infants and highlights NICHD’s efforts to prevent preterm births and improve the care of premature babies.

Taking supplemental docosahexaenoic acid (DHA) during pregnancy may decrease the risk of preterm birth. A new NICHD-supported study offers a potential explanation for this effect by suggesting that a daily 1,000-milligram dose of DHA influences certain inflammatory immune responses linked to childbirth.

The survival rate of extremely preterm infants born from 2013 through 2018 in a large network of U.S. research centers improved to 78.3%, compared to 76% for infants born in the network from 2008 to 2012, according to researchers funded by the National Institutes of Health.

An individual’s risk for death by suicide may begin before they are born, suggests a study by researchers at the National Institutes of Health. The authors compared pregnancy and birth records of nearly 50,000 individuals born between 1959 and 1966 to death records through 2016. They found that suicide rates were higher for males, white people, and for those who were among the younger siblings in a family. Other risk factors included having a parent with less than a high school education, having a parent who worked a manual labor job, and having a mother with a high rate of pregnancy complications or who smoked during pregnancy.

Read about NICHD’s research findings and activities from 2021.

It just got easier to participate in the PregSource®: Crowdsourcing to Understand Pregnancy research project. The free app allows participants to track their weight, sleep, mood, and other features of their pregnancy in just a few taps.

Dr. Grewal has been acting director of the division since February 2020.

Among 6- and 7-year-olds who were born extremely preterm—before the 28th week of pregnancy—those who had more than two hours of screen time a day were more likely to have deficits in overall IQ, executive functioning (problem solving skills), impulse control and attention, according to a study funded by the National Institutes of Health.

The National Institutes of Health will award up to $400,000 to individuals or groups who design an effective method for analyzing a large data set of first-time pregnancies and identifying risk factors for adverse outcomes, such as hypertensive disorders, diabetes and infection. A total of $50,000 will be awarded to each of seven winners designing the most effective means to analyze the data. An additional $10,000 will be awarded to the top five winners whose methods identify risk factors in disadvantaged populations.