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Increasing epidemiological and clinical studies suggest that metabolic syndrome (MetS) plays a role in the incidence and progression of osteoarthritis (OA).1 2 However, in absence of an appropriate MetS-associated OA experimental model,3 the MetS contribution to the joint phenotype in OA remains difficult to investigate and the evaluation of potential disease-modifying OA drugs (DMOADs) is complicated. Noteworthy, in contrast to their lean SHHF+/+(spontaneously hypertensive heart failure) controls, obese SHHFcp/cp rats, a well-characterised model of MetS,4 develop drastic metabolic, cardiovascular and renal alterations that are substantially improved through an early chronic mineralocorticoid receptor antagonism (MRA) treatment.5 Thus, by comparing young (1.5 months) and aged (12.5 months) lean SHHF+/+ and obese SHHFcp/cp rats, we sought to evaluate for the first time the potential (1) contribution of MetS to joint alterations and (2) therapeutic benefits derived from chronic MRA treatment by eplerenone (figure 1A).
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