Abstract:
:Dehydroepiandrosterone (DHEA), a precursor sex steroid, circulates in sulphated form (DHEAS). Serum DHEAS concentrations are inversely correlated with metabolic syndrome components and in vivo/in vitro studies suggest a role in modulating adipose mass. To investigate further, we assessed the in vitro biological effect of DHEA in white (3T3-L1) and brown (PAZ6) preadipocyte cell lines and human primary preadipocytes. DHEA (from 10(-8)M) caused concentration-dependent proliferation inhibition of 3T3-L1 and PAZ6 preadipocytes. Cell cycle analysis demonstrated unaltered apoptosis but indicated blockade at G1/S or G2/M in 3T3-L1 and PAZ6, respectively. Preadipocyte cell-line adipogenesis was not affected. In human primary subcutaneous and omental preadipocytes, DHEA significantly inhibited proliferation from 10(-8)M. DHEA 10(-7)M had opposing effects on adipogenesis in the two fat depots. Subcutaneous preadipocyte differentiation was unaffected or increased whereas omental preadipocytes showed significantly reduced adipogenesis. We conclude that DHEA exerts fat depot-specific differences which modulate body composition by limiting omental fat production.
journal_name
Mol Cell Endocrinoljournal_title
Molecular and cellular endocrinologyauthors
Rice SP,Zhang L,Grennan-Jones F,Agarwal N,Lewis MD,Rees DA,Ludgate Mdoi
10.1016/j.mce.2010.02.017subject
Has Abstractpub_date
2010-05-14 00:00:00pages
51-7issue
1-2eissn
0303-7207issn
1872-8057pii
S0303-7207(10)00093-6journal_volume
320pub_type
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