The American Physiological Society Press Release

press release logo

APS Contact: APS Communications Office

Email: communications@the-aps.org

Phone: 301.634.7209

Twitter: @APSPhysiology


High-Fat Diet during Pregnancy Compromises Offspring’s Lung Health

Mouse studies find increased airway resistance and inflammation even after weaning

Bethesda, Md. (March 29, 2017)—Women who follow a high-fat diet during pregnancy may increase their children’s risk for asthma. A mouse study by Oregon Health and Science University researchers suggests that consistent consumption of fat-laden foods may change the immune response of the offsprings’ respiratory system. The article is published in Physiological Reports.

Researchers studied four groups of mice pups: Two groups were born to mothers who were fed a high-fat diet (“high-fat maternal”) and then either continued a high-fat diet or switched to a normal-fat diet at weaning. The other two groups were born to mothers that followed a normal-fat diet (“normal maternal”) during pregnancy and lactation. After weaning, those pups were fed either a high-fat diet or a normal diet.

The research team examined lung structure from both groups, as well as several markers of inflammation and allergy response, including:

  • airway resistance (how easily air flows through the respiratory tract), a hallmark feature of asthma;

  • the amount and composition of the cells in the airways; and

  • the concentration of inflammatory chemicals in the lungs.

All of the pups whose moms consumed a high-fat diet had increased airway resistance, even those who weaned to a normal-fat diet. Higher airway resistance is commonly seen in asthma attacks when the airways constrict. This observation suggests maternal diet alone can affect airway reactivity in the offspring.

The lungs of all mice whose mothers were fed a high-fat diet had an increased concentration of inflammation-causing chemicals, higher cell counts (a marker of inflammation) and more white blood cells (cells that fight infection). The pups that began a normal diet after weaning did not show as much inflammation as those that were exposed to the high-fat diet.

“Our results demonstrate that maternal [high-fat diet] programs increased [airway resistance] in the offspring,” the researchers wrote. These findings suggest that exposure to a high-fat diet during pregnancy and nursing creates immune cell variances that increase the risk of asthma and allergies. Reducing fat in the offspring’s diet may help offset the health risks associated with the mother’s lifestyle, but some of the damage may already be done.

Read the full article, “Maternal high‐fat diet in mice leads to innate airway hyperresponsiveness in the adult offspring” in Physiological Reports.

NOTE TO JOURNALISTS: To schedule an interview with a member of the research team, please contact the APS Communications Office or 301-634-7209. Find more research highlights in the APS Press Room.

Physiology is the study of how molecules, cells, tissues and organs function in health and disease. Established in 1887, the American Physiological Society (APS) was the first U.S. society in the biomedical sciences field. The Society represents more than 10,500 members and publishes 15 peer-reviewed journals with a worldwide readership.

 


RelatedItems

Pollution Exposure during Pregnancy Increases Asthma Risk for Three Generations

Released July 18, 2017 - Exposure to environmental pollutants during pregnancy may increase the risk of asthma for as many as three consecutive generations, according to new research. The study is published ahead of print in the American Journal of Physiology—Lung Cellular and Molecular Physiology.

Nobel Laureate, Leading Experts Speak in APS President’s Symposium Series

Released March 30, 2016 - Leading research experts will discuss the physiology behind organ injury in alcohol abuse, the health impacts of diet, and adaptations to stress as part of the President's Symposium Series at the Experimental Biology 2016 meeting in San Diego. The series is anchored with the Nobel Prize in Physiology or Medicine Lecture by Nobel Laureate Roger Tsien, PhD.

Fat Stunts Growth of Tobacco Hornworm Caterpillars

Released April 4, 2016 - Tobacco hornworm caterpillars eating a high-fat diet are smaller than their counterparts eating a medium- or low-fat diet. New research presented at the Experimental Biology 2016 meeting found that fat decreased the caterpillars’ food consumption, leading to the smaller body size.

Dad’s Fatty Diet Can Lead to Obesity, Metabolic Syndrome in Grand-Offspring

Released August 1, 2016 - Researchers report on how paternal intake of a high-fat diet causes changes in genes that lead to generational obesity and metabolic dysfunction, including body weight and fat mass increases and changes in blood pressure, triglyceride levels and fat metabolism. However, these effects in offspring can be significantly improved or abolished by feeding lower fat diet to subsequent generations. The article is published in AJP-Endocrinology and Metabolism and was chosen as an APSselect article for August.

From: 
Email:  
To: 
Email:  
Subject: 
Message:

~/Custom.Templates/PressRelease.aspx