Linking Alzheimer’s Disease and Insulin Signaling

Research over the past several years has suggested a potential connection between Alzheimer’s disease (AD) and insulin resistance. Similarities between AD and type 2 diabetes mellitus (T2DM) are evident in disruptions to insulin signaling, which influence cell growth, differentiation, repair processes, energy metabolism, and glucose utilization. While insulin is best known for its role in controlling blood glucose, it also functions as an important growth factor for both standard cells and neurons.

More recent studies have reinforced the link between AD and heightened insulin resistance within the brain. This resistance—often accompanied by reduced responsiveness to insulin-like growth factor (IGF)—appears to be an early and common characteristic of AD. Notably, it can develop in individuals with AD even in the absence of T2DM.

Research indicates that restoring insulin sensitivity and preventing insulin depletion in the brain may help slow or potentially stop the progression of AD. Various pharmacological approaches are being explored to achieve these effects, with many initially tested in T2DM models. Metformin Hydrochloride (M107827) remains one of the most widely prescribed treatments for T2DM and is being investigated for its potential benefits in this context.

Metformin functions as an insulin sensitizer, primarily by reducing glucose production in the liver. In preclinical research, it has also been shown to improve neuronal insulin sensitivity.

Aladdin offers a broad selection of antidiabetic compounds. Additional therapeutic candidates with potential benefits include PPAR agonists such as Pioglitazone Hydrochloride (P121082) and Troglitazone (T126362), as well as ATP-sensitive potassium (K⁺) channel modulators including Glimepiride (G129354) and Repaglinide (R129561).

Reference

Gao C, Liu Y, Li L, et al. Rev Neurosci. 2013;24(6):607-15.

Talbot K, Wang HY, Kazi H, et al. J Clin Invest. 2012 Apr;122(4):1316-38.

Gupta A, Bisht B, Dey CS. Neuropharmacology. 2011 May;60(6):910-20

Aladdin: https://www.aladdinsci.com/