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Updated: Jul 10, 2026
An Experimental Model of Diet-Induced Metabolic Syndrome in Rabbit: Methodological Considerations, Development, and Assessment
Published on: April 20, 2018
Circulating succinate is elevated in rodent models of hypertension and metabolic disease
Nalini Sadagopan1, Wenlin Li, Steven L Roberds
1Pfizer Global Research & Development, Ann Arbor, Michigan, USA.
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.
