Thermogenesis in Adipose Tissue Activated by Thyroid Hormone.

Published online

Journal Article (Review)

Thermogenesis is the production of heat that occurs in all warm-blooded animals. During cold exposure, there is obligatory thermogenesis derived from body metabolism as well as adaptive thermogenesis through shivering and non-shivering mechanisms. The latter mainly occurs in brown adipose tissue (BAT) and muscle; however, white adipose tissue (WAT) also can undergo browning via adrenergic stimulation to acquire thermogenic potential. Thyroid hormone (TH) also exerts profound effects on thermoregulation, as decreased body temperature and increased body temperature occur during hypothyroidism and hyperthyroidism, respectively. We have termed the TH-mediated thermogenesis under thermoneutral conditions "activated" thermogenesis. TH acts on the brown and/or white adipose tissues to induce uncoupled respiration through the induction of the uncoupling protein (Ucp1) to generate heat. TH acts centrally to activate the BAT and browning through the sympathetic nervous system. However, recent studies also show that TH acts peripherally on the BAT to directly stimulate Ucp1 expression and thermogenesis through an autophagy-dependent mechanism. Additionally, THs can exert Ucp1-independent effects on thermogenesis, most likely through activation of exothermic metabolic pathways. This review summarizes thermogenic effects of THs on adipose tissues.

Full Text

Duke Authors

Cited Authors

  • Yau, WW; Yen, PM

Published Date

  • April 24, 2020

Published In

Volume / Issue

  • 21 / 8

PubMed ID

  • 32344721

Pubmed Central ID

  • 32344721

Electronic International Standard Serial Number (EISSN)

  • 1422-0067

Digital Object Identifier (DOI)

  • 10.3390/ijms21083020

Language

  • eng

Conference Location

  • Switzerland