Abstract
Background
The prevalence of adolescent obesity has increased dramatically, becoming a serious public health concern. While previous evidence suggests that in utero- and early postnatal overnutrition increases adult-onset obesity risk, the neurobiological mechanisms underlying this outcome are not well understood. Non-neuronal cells play an underestimated role in the physiological responses to metabolic/nutrient signals. Hypothalamic glial-mediated inflammation is now considered a contributing factor in the development and perpetuation of obesity; however, attention on the role of gliosis and microglia activation in other nuclei is still needed.
Methods/results
Here, we demonstrate that early life consumption of high-fat/sucrose diet (HFSD) is sufficient to increase offspring body weight, hyperleptinemia and potentially maladaptive cytoarchitectural changes in the brainstem dorsal-vagal-complex (DVC), an essential energy balance processing hub, across postnatal development. Our data demonstrate that pre- and postnatal consumption of HFSD result in increased body weight, hyperleptinemia and dramatically affects the non-neuronal landscape, and therefore the plasticity of the DVC in the developing offspring.
Conclusions
Current findings are very provocative, considering the importance of the DVC in appetite regulation, suggesting that HFSD-consumption during early life may contribute to subsequent obesity risk via DVC cytoarchitectural changes.
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Acknowledgements
This research was supported by NIH-DK115762 (M.R.H.) and the Swiss National Foundation FNSNF-P22HP3_172289 (CGL). M.R.H. receives research support from Eli Lilly & Co., and Boehringer Ingelheim, none of which was used in the collection of these data.
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C.G.L. and M.R.H. conceptualized of and designed the experiments; C.G.L., R.L., M.G., T.L., N.J., and L.M.S. conducted the research, C.G.L. and M.R.H. analyzed the data, C.G.L. and M.R.H. wrote the manuscript, and all authors reviewed/edited the manuscript. M.R.H. is the guarantor of this work and, as such, has full access to all the data in the study and takes responsibility for the integrity of the data and the accuracy of the data analysis.
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Liberini, C.G., Ghidewon, M., Ling, T. et al. Early life overnutrition impairs plasticity of non-neuronal brainstem cells and drives obesity in offspring across development in rats. Int J Obes 44, 2405–2418 (2020). https://doi.org/10.1038/s41366-020-00658-5
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DOI: https://doi.org/10.1038/s41366-020-00658-5