Protein-restricted diet during pregnancy after insemination alters behavioral phenotypes of the progeny.

Autor: Tamio Furusex, Kunio Miyake, Takashi Kohda, Hideki Kaneda, Takae Hirasawa, Ikuko Yamada, Tomoko Kushida, Misho Kashimura, Kimio Kobayashi, Fumitoshi Ishino, Takeo Kubota, Shigeharu Wakana
Zdroj: Genes & Nutrition; 1/19/2017, Vol. 12 Issue 1, p1-12, 12p, 1 Diagram, 1 Chart, 2 Graphs
Abstrakt: Background: Epidemiological studies suggest that hyponutrition during the fetal period increases the risk of mental disorders such as attention deficit hyperactivity disorder and autism-spectrum disorder, which has been experimentally supported using animal models. However, previous experimental hyponutrition or protein-restricted (PR) diets affected stages other than the fetal stage, such as formation of the egg before insemination, milk composition during lactation, and maternal nursing behavior. Results: We conducted in vitro fertilization and embryo transfer in mice and allowed PR diet and folic acid-supplemented PR diet to affect only fetal environments. Comprehensive phenotyping of PR and control-diet progenies showed moderate differences in fear/anxiety-like, novelty-seeking, and prosocial behaviors, irrespective of folic-acid supplementation. Changes were also detected in gene expression and genomic methylation in the brain. Conclusions: These results suggest that epigenetic factors in the embryo/fetus influence behavioral and epigenetic phenotypes of progenies. Significant epigenetic alterations in the brains of the progenies induced by the maternal-protein restriction were observed in the present study. To our knowledge, this is first study to evaluate the effect of maternal hyponutrition on behavioral phenotypes using reproductive technology. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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