Abstract：
:A small amount of adipose tissue associated with small arteries and arterioles is encountered both in mice and man. This perivascular adipose tissue (PVAT) has a paracrine effect on the vascular tone regulation. PVAT is expanded in obesity and in diabetes. This expansion not only involves enlargement of fat cells, but also the accumulation of inflammatory cells and a shift in the production of adipokines and cytokines. This effect is illustrated in this review by the effect of PVAT-derived factors of insulin-mediated vasoregulation in mouse resistance arteries. Insulin sensitivity of endothelial cells is also involved in the insulin-mediated regulation of muscle glucose uptake. Insulin affects vasoregulation by acting on different signaling pathways regulating NO and endothelin-1 release. This process is influenced by various adipokines and inflammatory mediators released from PVAT, and is affected by the degree of expansion and content of inflammatory cells. It is modulated by adiponectin (via 5' adenosine monophosphate-activated protein kinase, AMPK), TNFα (via c-jun N-terminal kinase) and free fatty acids (via protein kinase C-θ). PVAT thus provides an important site of control of vascular (dys)function in obesity and type 2 diabetes. An altered profile of adipokine and cytokine production by PVAT of resistance arteries may also contribute to or modulate hypertension, but a causal role in hypertension has still to be established.
journal_name
Vascul Pharmacoljournal_title
Vascular pharmacologyauthors
Eringa EC,Bakker W,van Hinsbergh VWdoi
10.1016/j.vph.2012.02.003subject
Has Abstractpub_date
2012-05-01 00:00:00pages
204-9issue
5-6eissn
1537-1891issn
1879-3649pii
S1537-1891(12)00036-5journal_volume
56pub_type
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