Estrogens in Adipose Tissue Physiology and Obesity-Related Dysfunction

Menopause-related decline in estrogen levels is accompanied by a change in adipose tissue distribution from a gynoid to an android and an increased prevalence of obesity in women. These unfavorable phenomena can be partially restored by hormone replacement therapy, suggesting a significant role for estrogen in the regulation of adipocytes' function. Indeed, preclinical studies proved the involvement of these hormones in adipose tissue development, metabolism, and inflammatory activity. However, the relationship between estrogen and obesity is bidirectional. On the one hand-their deficiency leads to excessive fat accumulation and impairs adipocyte function, on the other-adipose tissue of obese individuals is characterized by altered expression of estrogen receptors and key enzymes involved in their synthesis. This narrative review aims to summarize the role of estrogen in adipose tissue development, physiology, and in obesity-related dysfunction. Firstly, the estrogen classification, synthesis, and modes of action are presented. Next, their role in regulating adipogenesis and adipose tissue activity in health and the course of obesity is described. Finally, the potential therapeutic applications of estrogen and its derivates in obesity treatment are discussed.

Automated summary

Menopausal decline in estrogen levels leads to changes in adipose tissue distribution and increased obesity prevalence in women. Hormone replacement therapy can partially restore these effects, indicating the significant role of estrogen in adipocyte regulation. Preclinical studies have shown involvement of estrogen in adipose tissue development, metabolism, and inflammation. However, the relationship between estrogen and obesity is bidirectional, as estrogen deficiency leads to fat accumulation and impairs adipocyte function, while obese individuals have altered expression of estrogen receptors and key enzymes involved in their synthesis. This narrative review provides an overview of estrogen's role in adipose tissue development, physiology, and obesity-related dysfunction, as well as discussing potential therapeutic applications in obesity treatment.