Microlipid-induced oxidative stress in human breastmilk: in vitro effects on intestinal epithelial cells.

Microlipid-induced oxidative stress in human breastmilk: in vitro effects on intestinal epithelial cells. Research Abstract Details 

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Microlipid-induced oxidative stress in human breastmilk: in vitro effects on intestinal epithelial cells. Abstract Text:

William L Diehl-Jones,Debra Fraser Askin,James K Friel,William L Diehl-Jones,Debra Fraser Askin,James K Friel,William L Diehl-Jones,Debra Fraser Askin,James K Friel,

Objectives: To (1) determine whether medium chain fatty acids (Microlipid((R))) added to human breastmilk generates reactive oxygen species (ROS), and (2) measure the physiological effect(s) of Microlipid((R)) (ML)-supplemented human breastmilk in an enterocyte cell culture bioassay. Methods: ML was added to milk according to manufacturer's recommendations and total hydroperoxides measured at intervals with the FOX 2 and TBARS assays. Physiological effects of supplementation were measured using a human enterocyte cell line (Caco-2BBE) and/or a primary human fetal intestinal cell culture (FHS-74 Int). Endpoints included: intracellular oxidative stress, transepithelial electrical resistance (TEER), apoptosis, and interleukin (IL)-6 production. Results: Immediately postsupplementation, ML did not significantly increase ROS, as determined by both the FOX 2 and TBARS assays. Further, storage of milk + ML at 4 degrees C prevented significant increases in total hydroperoxides. However, by 4 hours postsupplementation at room temperature, both assays revealed significantly higher hydroperoxide and lipid peroxide levels. ML-supplemented milk stored at room temperature for 4 hours had the following effects in cell culture bioassays: elevated oxidative stress, increased rates of apoptosis, decreased transmembrane electrical resistance (TEER) values and, in both cell culture assays, significantly increased secretion of IL-6. Conclusions: Based on our measurements of extracellular and intracellular ROS, milk supplemented with fresh ML does not induce significant oxidative stress. However, when stored for 4 hours at room temperature, ML induces significant levels of oxidative stress. Decreases in TEER and increases in apoptosis and IL-6 secretion are consistent with ML-induced oxidative stress. It therefore is likely that in clinical situations, if ML-supplemented milk is not administered quickly, the newborn may be placed at greater risk of oxidative stress.

Microlipid-induced oxidative stress in human breastmilk: in vitro effects on intestinal epithelial cells. Publishing Authors By Initials

WL Diehl-Jones,DF Askin,JK Friel,WL Diehl-Jones,DF Askin,JK Friel,WL Diehl-Jones,DF Askin,JK Friel,

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Microlipid-induced oxidative stress in human breastmilk: in vitro effects on intestinal epithelial cells. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Breastfeeding medicine : the official journal of t

VOLUME: 2

Page Numbers: 209-18

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ISSN: 1556-8342

DAY: 17

MONTH: Dec

YEAR: 2007

Microlipid-induced oxidative stress in human breastmilk: in vitro effects on intestinal epithelial cells. Information

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LANGUAGE: eng

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Grant and Affiliation Information for Microlipid-induced oxidative stress in human breastmilk: in vitro effects on intestinal epithelial cells.

AFFILIATION: Faculty of Nursing, University of Manitoba, Winnipeg, Manitoba, Canada., Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.

Country: United States

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MEDLINETA: Breastfeed Med

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