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Central leptin and resistin combined elicit enhanced central effects on renal sympathetic nerve activity

What is the central question of this study? Leptin and resistin act centrally to increase renal sympathetic nerve activity (RSNA). We investigated whether a combination of resistin and leptin could induce a greater response than either alone. We also used Fos protein to quantify the number of activated neurons in the brain. What is the main finding and its importance? A combination of leptin and resistin induced a greater increase in RSNA than either hormone alone. This was correlated with a greater number of activated neurons in the arcuate nucleus than with either hormone alone.