The timing of stress before birth is the response of infant stress star-news.press/wp

summary: A new research reveals that the timing of stress during pregnancy has sex effects on infants, which changes how boys and girls respond to stress differently. Scientists have found that mid -pregnancy stress has a stronger effect on the interaction of girls’ stress, while boys are more sensitive to experienced stress in late pregnancy.

The study included the analysis of hormonal responses to the infants of moderate stress and mood after exposure to before birth, and to correct previous beliefs that girls were more sensitive in general. These results emphasize the importance of looking at the timing of exposure to prenatal stress to understand and possibly reduce the risk of mental health in the long run.

Main facts:

• Time of things: The pregnancy is in the middle and late periods of critical periods when the stress before birth affects differently on boys and girls.
• Gender differences: Boys showed greater sensitivity to stress later on pregnancy, correcting the wrong belief that prenatal stress mainly affects girls.
• Infant stress indicators: The researchers measured infant stress responses through cortisol levels after stress caused by a moderate laboratory and the differences allocated based on the timing of prenatal stress.

source: Michigan State University

A team of researchers at the Michigan State University and the University of Michigan found new visions about the timing of prenatal stress and its impact on the interaction of infant pressure and its mood – including gender differences.

The study, published in Psychological vascular science, It is the first to examine weekly stress within 27 weeks of pregnancy to define it when it affects the response of stress and its moods – two measures that indicate the interaction of the vital behavior of the infants.

“Prepinning stress has a firm link to negative health, including mental health, results in children and adults, but most studies conclude that the biggest effects on girls. Our study found that it is not the case. Altitia Livndoski, the main investigator of the study and professor at the Department of Psychology at Michigan State University, said it is in fact, just a different timing.

The researchers have recruited 396 pregnant women, especially from a large number of population at risk due to low income and/or exposure to intimate partner violence. Weekly strain assessments were conducted via e -mail or text from week 15 to week 41 of pregnancy.

Within six months after birth, the infant cortisol levels were collected before and after a mild exhausting task to find out how the hypothalamic adrenal system, or HPA axis, was answered for stress. Mothers also mentioned the mood of infants.

The study found periods of high allergy to tension in both pregnancy in the middle and late, but found that girls and boys had different patterns of allergies. The data showed that the experience of stress in the middle of pregnancy affected the HPA axis and the mood for girls, while late pregnancy stress affected boys.

Previous studies in this field have suspended the last stress evaluation between 32-34 weeks. Since this study lasted during the 41st week, Levendosky and her team managed to determine the time that was more sensitive to children.

“This study is an essential step in correcting our understanding about the effects of prenatal stress on boys and girls,” said Joseph Lunchetein, a study researcher and professor at the Department of Psychology at Michigan State University.

“We hope that our results will inspire additional research so that we can understand what is happening better in the development of the brain’s brain through pregnancy and how stress is affected.”

The current funding for the researchers team allows continuing to follow these participants until the age of four – with assessments at the age of 2.5 years and again at the age of 4 years. Amy Numal, the author, participates in this study, and a associate professor in the Department of Human Development and Family Studies at Michigan State University, to continue the study until subsequent childhood.

On this stress and research nervous research

author: Jack Harrison
source: Michigan State University
communication: Jack Harrison – Michigan State University
image: The image is attributed to news of neuroscience

The original search: Open access.
“Determining the timing of stress before childbirth associated with the vital interaction of the infantWritten by Alytia levendosky et al. Psychological vascular science

a summary

Determining the timing of stress before childbirth associated with the vital interaction of the infant

Prepinning stress has a firm link to negative negative results in young children, especially for girls, but the time specified during pregnancy of these associations is still unknown.

In the current study, we studied the differential effects of prenatal stress timing on two infants’s behavioral results (i.e., the HPA and the difficult mood) that are early to develop psychology.

We have obtained the most granular evaluation of prenatal stress so far, which involve weekly stress classifications of 396 pregnant women ranging from 15 and 41 weeks. In 6 months after childbirth, the infants cortisol (n = 173) was collected before and after a stressful laboratory mission and reported the mood of infants (n = 244).

Explore alike, alike, between the effects of the slope between the person and the person inside the prenatal stress on two biological behavioral results.

As for the HPA axis interaction, we found a sensitive period in the middle (weeks 20 and 29) for girls, but during the late pregnancy (week 37) for boys.

For a difficult mood, we found an effect between the Percene at the level of the average stress in addition to sensitive periods in the middle (20, 21, 25) and the late pregnancy (week 37) for girls, but through the medium to the late (weeks 25, 27, 30, 34, 40).

This study is the first to use a weekly evaluation through pregnancy to show specific windows of allergies for the biochemical seals of infants for psychopathy for children.

The results highlight that biological sex critically affects a specific timing for these prenatal stress associations with infant results, thus informing our understanding of sexual differences in the signs of early biological behavior to treat mental illness.