The Molecular Link between Obesity and the Endometrial Environment: A Starting Point for Female Infertility

Francesca Gonnella, Fanì Konstantinidou, Marisa Donato, Daniela Maria Pia Gatta, Alessia Peserico, Barbara Barboni, Liborio Stuppia, Warren B Nothnick, Valentina Gatta
International journal of molecular sciences · 2024 · vol. 25(13) , pp. 6855 · doi:10.3390/ijms25136855 · PMID:38999965 · W4399972229
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⚙ AI-generated summary by claude@2026-06, 2026-06-10 ⓘ

This review examines how obesity, through altered endometrial gene expression and a potentially hostile uterine environment, can negatively impact female fertility and embryo implantation.

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Abstract

Female infertility constitutes a growing health problem in developing countries and could be associated with several possible causes including reproductive disorders, congenital malformations, infections and hormonal dysfunction. Nonetheless, a series of additional factors can also negatively impact female fertility and are represented by chronic exposure to environmental pollutants, stress, unhealthy lifestyle choices such as cigarette smoking and, among others, obesity. Excess weight is associated with several chronic diseases, and growing evidence demonstrates that it can compromise reproductive physiology due to its influence on endometrial gene expression and receptivity. Thus, the current review of the literature mainly focused on how obesity can impair uterine receptivity, mostly from a molecular point of view throughout the window of implantation (WOI) period at an endometrial level. It was also highlighted that an obesity-related increase in adipose tissue may lead to a modulation in the expression of multiple pathways, which could cause a hostile endometrial environment with a consequent negative impact on the uterine receptivity and the establishment of pregnancy. Thanks to the use of the endometrial receptivity assay (ERA), a specific microarray that studies the expression of a series of genes, it is now possible to evaluate the endometrial status of patients with infertility problems in a more detailed manner. Moreover, female fertility and endometrial receptivity could be affected by endometriosis, a chronic benign gynecological disease, whose cause-and-effect relationship to obesity is still uncertain. Therefore, further investigations would be required to better elucidate these mechanisms that govern embryo implantation and could be potentially useful for the generation of new strategies to overcome implantation failure and improve the pregnancy rates in obese women.

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Condition tags

mesh:D004715endometriosisinfertility

MeSH descriptors

Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Endometrium Infertility, Female Infertility, Female Infertility, Female Infertility, Female

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References (61)

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