Makan dengan baik selama kehamilan dapat mengurangi risiko obesitas bayi terlepas dari ukuran ibu--T-REC-komunitas reptil-semarang--KSE-komunitas satwa eksotik

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Makan dengan baik selama kehamilan dapat mengurangi risiko obesitas bayi terlepas dari ukuran ibu

Jika Anda kelebihan berat badan dan hamil, bayi Anda tidak ditakdirkan untuk menjadi gemuk, menurut laporan penelitian. Laporan tersebut menunjukkan bahwa memodifikasi asupan lemak selama kehamilan ke tingkat moderat menguntungkan anak terlepas dari ukuran ibu. Secara khusus, mereka menemukan bahwa protein "SIRT1" penulisan ulang kode histone janin yang sedang berkembang, yang mempengaruhi "kemungkinan epigenetik" nya dari kelebihan berat badan sepanjang seumur hidup nya.....read more

Eating well during pregnancy reduces baby's obesity risk regardless of mom's size

Date:

September 17, 2012

Source:

Federation of American Societies for Experimental Biology

Summary:

If you are overweight and pregnant, your baby isn't destined to become obese, according to a research report. The report shows that modifying fat intake during pregnancy to a moderate level benefits the child regardless of the mother's size. Specifically, they found that the protein "SIRT1" rewrites a developing fetus' histone code, which affects his or her "epigenetic likelihood" of being overweight throughout his or her lifetime.

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 If you are overweight and pregnant, your baby isn't destined to a life of obesity after all, according to a new research report published online inThe FASEB Journal. In the report, a team of U.S. scientists show that modifying fat intake during pregnancy to a moderate level is enough to benefit the child regardless of the mother's size. Specifically, they found that a protein called "SIRT1" rewrites a developing fetus' histone code, which affects his or her "epigenetic likelihood" of being overweight or obese throughout his or her lifetime.

"We are finding that the cycle of obesity likely begins in the womb, however, we are also finding that obesity does not necessarily beget obesity," said Kjersti M. Aagaard, M.D., Ph.D., study author from the Division of Maternal-Fetal Medicine and the Department of Obstetrics and Gynecology at Baylor College of Medicine in Houston, Texas. "A diet laden with fat changes the molecular machinery which chemically modifies the structure of the developing infant's genetic material. These commonly called 'histone code' changes are rewritten-at least in part-by SIRT1, which in turn, alters key regulators of fat and glucose metabolism in the infant. It is our hope that these early steps will in turn break the cycle of obesity in the generations to come."

To make this discovery, Aagaard and colleagues used three groups of pregnant primates. The first group ate a healthy pregnancy diet (13 percent fat), while the second group ate a high fat diet (35 percent fat) and became obese. The third group was kept on a high fat diet for several years, became obese, and then was put on a healthy diet. Researchers were able to tease apart the effects on the infant of being exposed during pregnancy to a healthy diet versus an unhealthy high fat diet. The sirtuins and the proteins, and the genes regulating glucose and fat metabolism were analyzed. Results suggest that the livers of infants exposed to the high fat diet, showed less SIRT1 and less sirtuin activity than in the control group. However, infants exposed to a healthy pregnancy diet in both lean and obese groups had restored sirtuin. To prove that SIRT1 was specifically chemically modifying the histone code, scientists created a dead enzyme version. Using high level mass spectrometry, it was discovered that while the live enzyme version of SIRT1 was very good at chemically modifying histone proteins (specifically "deacetylating" histone protein H3) the dead version was not.

"What this study shows once again is that eating a healthy diet while pregnant holds true, regardless of your size or shape," said Gerald Weissmann, M.D., Editor-in-Chief of The FASEB Journal. "Even if a woman isn't eating well before pregnancy, adopting good eating habits during pregnancy is still very good for the child and for her. This new report shows how diet affects offspring at the molecular level and points to new treatments for overweight people who were not fortunate enough to have mothers who ate well during pregnancy."

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Story Source:

The above story is based on materials provided by Federation of American Societies for Experimental Biology. Note: Materials may be edited for content and length.

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Journal Reference:

1.    M. A. Suter, A. Chen, M. S. Burdine, M. Choudhury, R. A. Harris, R. H. Lane, J. E. Friedman, K. L. Grove, A. J. Tackett, K. M. Aagaard. A maternal high-fat diet modulates fetal SIRT1 histone and protein deacetylase activity in nonhuman primates. The FASEB Journal, 2012; DOI: 10.1096/fj.12-212878

http://www.sciencedaily.com/releases/2012/09/120917123841.htm

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