Premature brains develop differently in boys, girls

Washington, Sept. 23: Turns out, brains of baby boys born prematurely are affected differently and more severely than premature infant girls' brains, a new study has revealed.

Lead authors Amanda Benavides and Peg Nopoulos used magnetic resonance imaging ( MRI) scan as part of the study on premature babies to examine how the brains of baby boys and girls changed and developed.

The researchers took high- quality MRI scans of the brains of 33 infants aged one year. The sample included babies who were carried to full term ( at least 38 weeks) and preterm ( less than 37 weeks). The scans were analyzed in conjunction with information gathered from questionnaires completed by the infants' mothers and other data collected when they were born.

“The window between birth and one year of age is the most important time in terms of brain development. Therefore studying the brain during this period is important to better understand how the premature brain develops,” explained Benavides.

Brain measurements taken from the MRIs showed that even at this very young age, there are major sex differences in the structure of the brain, and these are independent of the effects of prematurity.

Brain tissue is divided into cerebral gray matter which includes regions of the brain that influence muscle control and emotion.

While boys’ brains were overall larger in terms of volume, girls had proportionately larger volumes of gray matter and boys had larger volumes of white matter. — ANI