C-Section Stress Could Alter Baby's Immune Cells
THURSDAY, July 2 (HealthDay News) -- Babies delivered by cesarean section experience changes to the DNA of white blood cells, which might explain why they're at increased risk for immunological diseases such as diabetes and asthma later in life, Swedish researchers say.
"Delivery by C-section has been associated with increased allergy, diabetes and leukemia risks," Dr. Mikael Norman, a pediatric specialist at the Karolinska Institute in Stockholm, said in a news release from Wiley-Blackwell publishers. "Although the underlying cause is unknown, our theory is that altered birth conditions could cause a genetic imprint in the immune cells that could play a role later in life."
Norman and his colleagues analyzed blood samples from 37 infants taken just after delivery and samples taken three to five days after birth. The blood was analyzed to assess the degree of DNA-methylation in the white blood cells, which are a key part of the immune system. In DNA-methylation, DNA is chemically modified to activate or turn off genes in response to changes in the external environment.
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