ArticleMolecular and cellular biochemistry2015
Widdrol-induced lipolysis is mediated by PKC and MEK/ERK in 3T3-L1 adipocytes.
Article in Molecular and cellular biochemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 7 citations in OpenAlex.
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- Potential lipolytic regulators derived from natural products as effective approaches to treat obesity.Frontiers in endocrinology · 2022Review
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5 authors at 1 institution in 1 country.
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Abstract
Obesity is a serious medical condition causing various diseases such as heart disease, type-2 diabetes, and cancer. Fat cells (adipocytes) play an important role in the generation of energy through hydrolysis of lipids they accumulate. Therefore, induction of lipolysis (breakdown of lipids into fatty acids and glycerol), is one of the ways to treat obesity. In the present study, we investigated the lipolytic effect of widdrol in 3T3-L1 adipocytes and its mechanism. Widdrol considerably increased the amount of glycerol released from 3T3-L1 adipocytes into the medium in a time- and dose-dependent manner. To determine the mechanism of this effect, we investigated the alterations in glycerol release and protein expression in 3T3-L1 adipocytes treated with widdrol alone or widdrol and inhibitors of proteins involved in the cAMP-dependent pathway or cAMP-independent PKC-MAPK pathway, which are known to induce lipolysis in adipocytes. The adenylyl cyclase inhibitor SQ-22536, PLA2 inhibitor dexamethasone, PI3K inhibitor wortmannin, and PKA inhibitor H-89, which were used to investigate the involvement of the cAMP-dependent pathway, did not affect the lipolytic effect of widdrol. Widdrol-induced phosphorylation of PKC, MEK, and ERK, which are related to the PKC-MAPK pathway, and their phosphorylation was inhibited by their inhibitors (H-7, U0126, and PD-98059, respectively). Moreover, the increase in glycerol release induced by widdrol was almost completely blocked by PKC, MEK, and ERK inhibitors. These results suggest that widdrol induces lipolysis through activation of the PKC-MEK-ERK pathway.
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