C3a receptor signalling in ObRb-expressing neurons promotes leptin resistance and obesity-associated cardiac remodelling
Obesity is associated with hypothalamic inflammation, leptin resistance and increased cardiometabolic risk, but the neuroimmune signals linking nutrient excess to these outcomes remain incompletely defined. Here we show that diet-induced obesity is accompanied by local complement activation in the mouse hypothalamus, leading to C3a generation that signals through C3a receptor (C3aR) on leptin…
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