Why the study?
Adipose tissue dysfunction marks aging, and ABHD5 controls lipolysis, but its role in lipolysis regulation during aging or exercise is unknown.
Does high-intensity interval training restore ABHD5 protein content and lipolytic activity in the adipose tissue of aged mice?
Does high-intensity interval training restore ABHD5 protein content and lipolytic activity in the adipose tissue of aged mice?
Exercise can reverse the age-related decline in ABHD5 protein content and restore lipolytic activity in adipose tissue.
Aging may impair adipose lipolysis via reduced ABHD5; leaves open whether ABHD5-targeted interventions improve metabolic outcomes in older adults.
Dysfunction of the adipose tissue metabolism is considered as a significant hallmark of aging. It has been proposed that α-β hydrolase domain containing 5 (ABHD5) plays a critical role in the control of lipolysis. However, the role of ABHD5 in the control of lipolysis during aging or exercise is unknown. Here we combined the experimental mouse model with transcriptomic analyzes by using murine and human databases to explore the role of ABHD5 in the adipose tissue during aging and in response to exercise. Transcriptomic data revealed a downregulation of Abhd5 messenger RNA levels in the subcutaneous white adipose tissue (scWAT) over time in individuals from 20 to 69 years old. Aged mice displayed dramatic reduction of ABHD5 protein content and lipolytic-related proteins in the scWAT. Interestingly, 4 weeks of high-intensity interval training increased ABHD5 protein level and restored the lipolytic pathway in the scWAT of aged mice. Altogether, our findings demonstrated that aging affects ABHD5 content in the adipose tissue of mice and humans. Conversely, exercise increases ABHD5 activity, recovering the lipolytic activity in aged mice.
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Brícola et al. (2022) studied this question.
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