Introduction: Benign Prostatic Hyperplasia (BPH) is a benign tumor in males, which is
histopathologically known with an increase of epithelial cells and prostatic stroma. Androgens,
estrogens, stroma-epithelial interactions, growth factors, and chronic inflammation play a key role in
the occurrence of BPH. Chronic inflammation in BPH is characterized by excessive expression of
COX-2, which will trigger the expression of Bcl-2 anti-apoptotic protein. Dayak onion (Eleutherine
Americana Merr) is a typical Kalimantan plant that is known as the treatment for prostate disease.
This plant contains flavonoids which can inhibit the COX-2 enzyme thus causing a reduction in the
production of prostaglandin E2.
Methods: This research was experimental research computationally and in vitro laboratory
experimental research to determine COX-2 inhibitory activity by ethanol extracts of Dayak onion.
Results and Discussion: In in silico flavonoid, it was strongly related to COX-2 receptor on the
active side of TYR371. Thus, it had the potential to inhibit COX-2. COX-2 inhibitor would cause
BCL-2 to be inactive so that apoptosis occurr in BPH. In the in vitro research using human whole
blood assay, the Dayak Onion bulb ethanol extract had IC50 COX-2 of 40.57 ng/ml and IC50 COX-1
of 364.89 ng/ml. Therefore, the ratio of IC50 COX-2 to IC50 COX-1 was 0.11.
Conclusion: Ethanol extract of Dayak onion bulb has an inhibitory activity against COX-2. Thus, it
has a potential of being an innovation for BPH treatment.
Patient Summary: A healthy male, age 25-35 years old (history taking, physical and laboratory
examination), and not using NSAIDs for the past 2 weeks.