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Breast Feeding May Help Protect Babies Against Allergic Asthma

Date:
February 25, 2008
Source:
Nature Medicine
Summary:
Breast feeding may help protect babies against allergic asthma. Airborne allergen is able to pass from mother to child through breast milk, which creates a tolerance to the allergen. Allergic asthma affects 300 million people worldwide and is characterized by obstruction of the respiratory pathways in response to allergen exposure.

Breast feeding may help protect babies against allergic asthma. Airborne allergen is able to pass from mother to child through breast milk, which creates a tolerance to the allergen.

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Allergic asthma affects 300 million people worldwide and is characterized by obstruction of the respiratory pathways in response to allergen exposure. Its prevalence has increased in recent decades, probably due to changes in environmental factors. Indeed, exposure to environmental antigens during infancy reduces the likelihood of developing asthma.

Valerie Julia and her colleagues investigated whether exposing lactating mice to an airborne allergen — ovalbumin — affected asthma development in the offspring. They found that ovalbumin was efficiently transferred from the mother to the neonate through the milk, leading to the development of immunological tolerance. Tolerance induction relied on the presence of transforming growth factor–beta and was mediated by regulatory CD4+ T lymphocytes, but did not require the transfer of immunoglobulins through the milk.

Breast milk–mediated transfer of an antigen to the neonate can result in oral tolerance induction, leading to antigen-specific protection from allergic asthma. These observations may pave the way for the design of new strategies to prevent the development of allergic diseases.

Journal reference: Valérie Verhasselt, Valérie Milcent, Julie Cazareth, Akira Kanda, Sébastien Fleury, David Dombrowicz, Nicolas Glaichenhaus & Valérie Julia. Breast milk–mediated transfer of an antigen induces tolerance and protection from allergic asthma pp 170 - 175. Published online Nature Medicine. 27 January 2008. doi 10.1038/nm1718


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The above story is based on materials provided by Nature Medicine. Note: Materials may be edited for content and length.


Cite This Page:

Nature Medicine. "Breast Feeding May Help Protect Babies Against Allergic Asthma." ScienceDaily. ScienceDaily, 25 February 2008. <www.sciencedaily.com/releases/2008/02/080224142005.htm>.
Nature Medicine. (2008, February 25). Breast Feeding May Help Protect Babies Against Allergic Asthma. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2008/02/080224142005.htm
Nature Medicine. "Breast Feeding May Help Protect Babies Against Allergic Asthma." ScienceDaily. www.sciencedaily.com/releases/2008/02/080224142005.htm (accessed October 31, 2014).

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