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Urine Samples May Yield Clues to Fetal Health

时间: 2016-11-23 08:11 信息来源: LIU 点击次数:

澳门新葡京线上注册 www.lantianting.com Abnormal fetal growth birth weight are risk factors for chronic diseases later in life, including type 2 diabetes obesity, the researchers noted.

But metabolic substances in a mother's urine appear to indicate how large a baby will be at birth, the researchers said.

Doctors ccould then suggest lifestyle changes to help maintain healthy fetal size, the researchers said in the Nov. 3 issue of BMC Medicine.

"We used a technique called NMR spectroscopy to identify, for the first time, a panel of 10 urinary metabolites in the third trimester of pregnancy that were associated with greater fetal growth increased birth weight," said study co-lead author Mireille Toledano, of Imperial College London in England.

"These metabolites included steroid hormones important biological building blocks called branched-chain amino acids [BCAAs]," she said in a journal news release. These amino acids are nutrients that provide energy for the growing fetus.

Changes in these amino acids other metabolites detected in a mother's urine explained 12 percent of the variation in birth weight. The finding was independent of other known factors such as a mother's weight smoking or drinking, the researchers said.

For the study, urine samples lifestyle information were collected from more than 800 pregnant women, ages 28 to 33, in Spain.

"We found that a 50 percent increase in the mother's level of individual BCAAs equated to a 1 to 2.4 percent increase in birth weight," said study co-lead author Muireann Coen, also of Imperial College London. This was the equivalent of 5 to 11 grams (less than an ounce), she said.

"When we made comparisons with the lifestyle environmental exposures of the women in our study we found that the variability between BCAA profiles of individual mothers could be partially explained by levels of physical activity, vitamin D, coffee consumption smoking exposure, suggesting them to be potential areas of intervention to promote a healthy birth weight," Coen said.

The study only found an association between levels of branched-chain amino acids abnormal growth patterns, not a direct cause-and-effect relationship.

Still, "this proof-of principle study highlights the value metabolic profiling of pregnant women could have on personalizing pregnancy plans to improve fetal growth outcomes," the researchers said.

SOURCE: BMC Medicine, news release, Nov. 3, 2016

HealthDay
News stories are provided by HealthDay do not reflect the views of MedlinePlus, the National Library of Medicine, the National Institutes of Health, the U.S. Department of Health Human Services, or federal policy.


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