Associations between maternal pre-pregnancy BMI and mean diffusivity of the hippocampus and amygdala in infants.

IF 4.2 2区医学 Q1 ENDOCRINOLOGY & METABOLISM International Journal of Obesity Pub Date : 2025-02-11 DOI:10.1038/s41366-025-01730-8

Aylin Rosberg, Harri Merisaari, John D Lewis, Niloofar Hashempour, Minna Lukkarinen, Jerod M Rasmussen, Noora M Scheinin, Linnea Karlsson, Hasse Karlsson, Jetro J Tuulari

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Abstract

Background: Maternal pre-pregnancy obesity may negatively affect offspring outcomes, including neurodevelopment. This study examined the relationship between maternal pre-pregnancy body mass index (MBMI) and the microstructure of the hippocampus and amygdala in neonates.

Methods: Diffusion tensor imaging was used to assess mean diffusivity (MD) in these brain regions in 122 infants (mean gestational age: 39.9 weeks, mean age at scan: 24.8 days) from the FinnBrain Birth Cohort Study ( www.finnbrain.fi ). Linear regression was applied to explore associations between MBMI and MD at the regional level, while non-parametric permutation analysis was used for voxelwise investigations.

Results: A positive association was found between MBMI and hippocampal MD, particularly in the right hippocampus. Voxelwise analyses showed stronger associations in distinct areas: posterior for the right hippocampus and anterior for the left. No significant association was found between MBMI and amygdala MD.

Conclusion: These findings suggest that in utero exposure to high MBMI may influence hippocampal microstructure in infants, underscoring the need for further research on the intergenerational effects of maternal obesity on early brain development.

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来源期刊

International Journal of Obesity 医学-内分泌学与代谢

CiteScore

10.00

自引率

2.00%

发文量

221

审稿时长

3 months

期刊介绍： The International Journal of Obesity is a multi-disciplinary forum for research describing basic, clinical and applied studies in biochemistry, physiology, genetics and nutrition, molecular, metabolic, psychological and epidemiological aspects of obesity and related disorders. We publish a range of content types including original research articles, technical reports, reviews, correspondence and brief communications that elaborate on significant advances in the field and cover topical issues.