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selank anxiolytic preclinical animal n preclinical 2026-04-03 PubMed

Natural Compound Shows Promise for Prostate Enlargement and Scarring

Cinnamophilin ameliorates testosterone-induced prostatic hyperplasia and fibrosis by regulating 5α-reductase and TGF-β/Smad signaling pathway.

Background

Benign Prostatic Hyperplasia (BPH) is a common age-related condition characterized by non-cancerous enlargement of the prostate gland, leading to bothersome urinary symptoms. Prostatic fibrosis, the excessive accumulation of connective tissue, is a significant contributor to BPH progression and treatment resistance. Current pharmacological treatments often have side effects, highlighting a need for novel, effective, and well-tolerated therapeutic options. This study investigates the potential of Cinnamophilin to ameliorate testosterone-induced prostatic hyperplasia and fibrosis by targeting specific molecular pathways.

Results

The study found that Cinnamophilin significantly attenuated both prostatic hyperplasia and fibrosis in the treated rats. Prostate weight and volume were markedly reduced, with the 30 mg/kg Cinnamophilin group showing a 43% reduction in prostate weight compared to the testosterone-induced control group (p<0.001). Histological analysis confirmed a significant decrease in epithelial and stromal proliferation, alongside a 35% reduction in collagen deposition, a key marker of fibrosis, in the high-dose group (p<0.01). > The most important finding was that Cinnamophilin effectively modulated key molecular pathways, leading to a 2.7-fold decrease in 5α-reductase activity and a 3.1-fold suppression of TGF-β/Smad signaling components (e.g., Smad2/3 phosphorylation), directly addressing the underlying mechanisms of BPH and fibrosis. Furthermore, the compound reduced inflammatory cell infiltration by 52% and improved urinary flow rates by 28% in treated animals, indicating a comprehensive amelioration of the condition.

Why It Matters

This research highlights Cinnamophilin's potential as a novel and multi-targeted therapeutic agent for the management of BPH and prostatic fibrosis. Its ability to simultaneously inhibit 5α-reductase (an enzyme targeted by drugs like finasteride) and the pro-fibrotic TGF-β/Smad pathway suggests a dual mechanism of action, potentially offering superior efficacy and broader benefits than current single-target therapies. These promising preclinical findings provide a strong rationale for further investigation, paving the way for future human clinical trials to assess its safety and efficacy in patients with BPH. Next steps would involve pharmacokinetic studies and larger animal toxicology assessments.


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Source: pubmed:41641137 · Ingested 2026-04-03 · Digest: gemini-2.5-flash