Abstract
During the progression from the lean to the obese state, adipose tissue undergoes hyperplasia as well as hypertrophy in an attempt to cope with the increased demand for triglyceride storage. This process requires a high degree of plasticity at both the cellular and tissue levels. Even though adipose tissue as a whole seems to be a relatively static tissue containing many adipocytes that turn over relatively slowly, these cells are embedded in an environment that can rapidly adapt to the expansion needs and also accommodate newly differentiating adipocytes. The extracellular matrix of adipose tissue faces unique challenges with respect to adjusting to the need for remodeling and expansion. In parallel, the vasculature has to adapt to altered requirements for nutrient and oxygen exchange. A decrease in the plasticity of these processes leads to metabolic dysfunction. To maintain a healthy, non-inflamed phenotype, complex regulatory mechanisms are in place to ensure adipocytes and stromal vascular cells efficiently crosstalk to allow adipose tissue to expand upon increased demand for storage of triglycerides.
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Acknowledgments
This work was supported by NIH grants R01-DK55758, R01-CA112023, RC1-DK086629 and P01-DK088761 as well as Juvenile Diabetes Foundation grant JDRF 1-2008-16 (P.E.S.). We would like to thank Drs. Todd Schraw, Nils Halberg and Tayeba Khan for providing pictures for the figures.
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Sun, K., Scherer, P.E. (2010). Adipose Tissue Dysfunction: A Multistep Process. In: Christen, Y., Clément, K., Spiegelman, B. (eds) Novel Insights into Adipose Cell Functions. Research and Perspectives in Endocrine Interactions. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-13517-0_6
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