Evaluation of anti-hypertensive activity of Quercus leucotrichophora A. camus methanolic extract on DOCA-salt induced hypertensive rats

Abstract

Quercus leucotrichophora A. camus, commonly known as Banj oak or Ban tree, belongs to the Fagaceae family and is abundantly found in the regions of Shimla, Kullu-Manali, and upper Mandi in Himachal Pradesh. This study explores the medicinal properties of plant seeds, known for their antioxidant and diuretic activity, traditionally utilized in the treatment of hypertension and hypolipidemic, hepatoprotective conditions.

Purpose

To investigate the antihypertensive effect of methanolic extract of Quercus leucotrichophora A. camus seeds in DOCA sat induced rats.

Material and methods

Ground seeds of Quercus leucotrichophora A. camus were stored in an airtight container. A total of 100 gs of dried seed powder were subjected to extraction using 250 ml of methanol and a Soxhlet extractor maintained at 60–65 °C for five hours. The resulting dried extract (5 gs) was stored in an airtight container in a refrigerator at low temperature and administered by rats to test its antihypertensive impact. The assessment of obtained extract impact on hypertension induced by DOCA-salt was conducted through blood pressure measurement and biochemical analysis.

Results

Our study revealed that the methanolic extract of Quercus leucotrichophora A. camus seeds exerted blood pressure-lowering effects, associated with an increase in serum Nitric Oxide (NO) levels. The attenuation of hypertension by extract was further linked to the normalization of serum Na⁺ and K⁺concentrations, indicating an improvement in electrolyte imbalance. Additionally, the antioxidant properties of Quercus leucotrichophora A. camus were evident through increased activities of Glutathione (GSH), Glutathione Peroxidase (GHPx), Superoxide Dismutase (SOD), and decrease activity of Thiobarbituric acid reactive substances (TBARS).

Conclusion

The findings of our investigation suggest that the antihypertensive action of Quercus leucotrichophora A. camus is correlated with enhanced endothelial nitric oxide synthase (eNOS) activation and an augmented antioxidant defense system. This sheds light on the potential therapeutic benefits of plant under investigation in managing hypertension, emphasizing its role in promoting cardiovascular health. Further research is warranted to elucidate the underlying mechanisms and to explore the full pharmacological potential of Quercus leucotrichophora A. camus in the field of cardiovascular medicine.