alexa Circulating succinate is elevated in rodent models of hypertension and metabolic disease.
Biochemistry

Biochemistry

Bioenergetics: Open Access

Author(s): Sadagopan N, Li W, Roberds SL, Major T, Preston GM,

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Abstract BACKGROUND: Recent evidence suggests that succinate, long known as an intermediate in the citric acid cycle, may also have a role as a signaling molecule through GPR91 and that activation of this receptor results in blood pressure (BP) elevation via the renin-angiotensin system. We sought to test the hypothesis that GPR91 contributes to BP elevation in hypertension. In addition we investigated whether elevated succinate in diabetes could contribute to the increased rate of gluconeogenesis in that condition. METHODS: Circulating succinate concentration was measured using liquid chromatography tandem mass spectrometry in rodent models of hypertension and metabolic disease as well as in human hypertensives and type 2 diabetics in comparison to control subjects. RESULTS: Elevated succinate was detected in spontaneously hypertensive rats (SHR), ob/ob mice, db/db mice, and fa/fa rats in comparison to their non-diseased controls. The changes in concentration are consistent with activation of GPR91. In contrast, neither human hypertensives nor diabetic patients had elevated succinate in comparison to controls. CONCLUSIONS: These findings are consistent with a role of GPR91 signaling in rodent hypertension and diabetes models but not in the analogous human diseases. This article was published in Am J Hypertens and referenced in Bioenergetics: Open Access

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