November 2020 in “Psychoneuroendocrinology” In this study, repeated finasteride administration was associated with decreased social interaction and cognitive deficits in male rats, potentially linked to changes in cholinergic system activity.
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March 2003 in “Life Sciences” This study found that acetylcholine levels in the superficial skin of atopic dermatitis patients were significantly higher compared to healthy volunteers, suggesting a potential role in skin cell regulation.
February 2026 in “International Journal of Molecular Sciences” In this study, the researchers found that cholinergic signaling via M4 muscarinic receptors influences hair growth, with enhanced elongation observed upon activation with bethanechol, highlighting its potential role in hair biology using mouse models.
This study observed that stimulating the cholinergic system via muscarinic receptors in dermal papilla cells and other hair-related tissues promoted hair growth, with mechanisms involving the activation of Wnt/β-catenin signalling pathways in cell cultures and increased hair shaft elongation in mouse vibrissae treated with bethanechol.
September 2023 in “International journal of molecular sciences” In this study involving ICR mice, researchers found that Korean red pine bark extract improved cognitive functions impaired by TMT through mechanisms like antioxidant system protection, cholinergic and synaptic support, mitochondrial regulation, and reduction of neuro-inflammation and apoptosis.
