Oleanolic Acid as an Adjunct in Type 2 Diabetes
Abstract
Background: : Type 2 diabetes mellitus is a progressive cardiometabolic disease in which many patients require treatment intensification despite lifestyle intervention and evidence-based pharmacotherapy. Oleanolic acid, a pentacyclic triterpenoid found in olives and other plants, has shown insulin-sensitizing, antioxidant, anti-inflammatory, and hepatometabolic effects in experimental models.
Aim:: This review evaluates oleanolic acid as a potential adjunctive intervention in type 2 diabetes, emphasizing translational evidence, formulation-dependent bioavailability, clinical endpoints, and patient relevance.
Methods:: We performed a narrative translational review of mechanistic, preclinical, pharmacokinetic, clinical, and trial-registry evidence on oleanolic acid, insulin resistance, prediabetes, and type 2 diabetes.
Results:: Preclinical studies support multiple mechanisms by which oleanolic acid may influence glucose homeostasis, including modulation of insulin signaling, hepatic glucose production, oxidative stress, inflammatory pathways, lipid metabolism, and beta-cell vulnerability. Human evidence remains limited but clinically relevant. PREDIABOLE reported reduced progression from prediabetes to type 2 diabetes after long-term intake of oleanolic acid-enriched olive oil. BIO-OLTRAD demonstrated measurable systemic exposure after a 30 mg dose delivered in functional olive oil, with transport through albumin and triglyceride-rich lipoproteins. OLTRAD is testing whether…
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