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Year : 2018  |  Volume : 13  |  Issue : 8  |  Page : 1368-1374

Advanced glycation end products induce neural tube defects through elevating oxidative stress in mice

Laboratory for Development, College of Life Sciences, Northwest University, Xi’an, Shaanxi Province, China

Correspondence Address:
Ru-Lin Li
Laboratory for Development, College of Life Sciences, Northwest University, Xi’an, Shaanxi Province
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Source of Support: This study was supported by the grant from Shaanxi Technology Committee of China, No. 2013JM4001; and the China Scholarship Council (CSC), Conflict of Interest: None

DOI: 10.4103/1673-5374.235249

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Our previous study showed an association between advanced glycation end products (AGEs) and neural tube defects (NTDs). To understand the molecular mechanisms underlying the effect of AGEs on neural tube development, C57BL/6 female mice were fed for 4 weeks with commercial food containing 3% advanced glycation end product bovine serum albumin (AGE-BSA) or 3% bovine serum albumin (BSA) as a control. After mating mice, oxidative stress markers including malondialdehyde and H2O2 were measured at embryonic day 7.5 (E7.5) of gestation, and the level of intracellular reactive oxygen species (ROS) in embryonic cells was determined at E8.5. In addition to evaluating NTDs, an enzyme-linked immunosorbent assay was used to determine the effect of embryonic protein administration on the N-(carboxymethyl) lysine reactivity of acid and carboxyethyl lysine antibodies at E10.5. The results showed a remarkable increase in the incidence of NTDs at E10.5 in embryos of mice fed with AGE-BSA (no hyperglycemia) compared with control mice. Moreover, embryonic protein administration resulted in a noticeable increase in the reactivity of N-(carboxymethyl) lysine and N(ε)-(carboxyethyl) lysine antibodies. Malondialdehyde and H2O2 levels in embryonic cells were increased at E7.5, followed by increased intracellular ROS levels at E8.5. Vitamin E supplementation could partially recover these phenomena. Collectively, these results suggest that AGE-BSA could induce NTDs in the absence of hyperglycemia by an underlying mechanism that is at least partially associated with its capacity to increase embryonic oxidative stress levels.

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