ANTIHYPERTENSIVE EFFECTS OF ETHANOLIC EXTRACT OF TRAPA NATANS SEEDS IN L-NAME-INDUCED HYPERTENSIVE RATS
DOI:
https://doi.org/10.69656/pjp.v22i1.1888Keywords:
Hypertension, Invasive blood pressure, L-NAME, Non-invasive blood pressure, Trapa natansAbstract
Background: There is need for safer and cost-effective therapeutic intervention for hypertension. Trapa natans exhibits antioxidant and anti-inflammatory activity. However, its efficacy as an antihypertensicve has not yet been established. This study aimed to examine the potential antihypertensive effect of ethanolic extract of Trapa natans seed in L-NG-Nitro Arginine Methyl Ester (L-NAME) induced hypertensive rats. Methods: This study used 30 rats which were divided into six groups of five rats each. The control group was given 5 mg/Kg normal saline. L-NAME and captopril (20 mg/Kg) were given to the second group. L-NAME and different doses of Trapa natans were given to 3rd, 4th, 5th and 6th groups. Non-invasive blood pressure was checked weekly. On the 29th day, the invasive blood pressure of the animals was checked. Results: The results showed that the non-invasive blood pressure altered substantially across the groups over time, especially the dose of 400 mg/Kg Trapa natans notably reduced the blood pressure. By the end of 28 days the invasive blood pressure also showed a noteworthy reduction in blood pressure for the dose of 400 mg/Kg Trapa natans. Conclusion: This study supports the beneficial ability of Trapa natans in lessening L-NAME induced hypertension. Its effects are likely to be caused by its phytochemical constituent, which demonstrates strong antioxidants and anti-inflammatory activities of Trapa natans.
Pak J Physiol 2026;22(1):9–11, DOI: https://doi.org/10.69656/pjp.v22i1.1888
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References
World Health Organization. Hypertension. Updated 2024. https://www.who.int/health-topics/hypertension#tab=tab_1. [Accessed: 10 April 2024.]
Yao Q, Liu C, Zhang Y, Xu L. Health-related quality of life of people with self-reported hypertension: A national cross-sectional survey in China. Int J Environ Res Public Health 2019;16(10):1721.
Kifle ZD, Adugna M, Chanie GS, Mohammed A. Prevalence and associated factors of hypertension complications among hypertensive patients at University of Gondar Comprehensive Specialized Referral Hospital. Clin Epidemiol Glob Health 2022;13:100951.
Wajngarten M, Silva GS. Hypertension and stroke: Update on treatment. Eur Cardiol 2019;14(2):111–5.
World Health Organization. Hypertension fact sheet. Updated 19 Mar 2023. https://www.who.int/news-room/fact-sheets/detail/ hypertension. [Accessed: 10 April 2024]
Elahi A, Ali AA, Khan AH, Samad Z, Shahab H, Aziz N, et al. Challenges of managing hypertension in Pakistan —a review. Clin Hypertens 2023;29(1):17.
Arshad MI, Syed F Jamal. Natioanl Center for Biotechnology Information. 2023. Essential Hypertension. StatPearls. NCBI Bookshelf. Available from: https://www.ncbi.nlm.nih.gov/books/ NBK539859/ [cited 11 Apr 2024]
Iqbal M, Akram M, Rashid A, Zainab R, Laila U, Khalil MT, et al. Prevalence of hypertension and associated co-morbidities in Pakistan. Methews Nurs Health Care 2023;5(1):11.
Sobierajski T, Surma S, Roma?czyk M, ?abuzek K, Filipiak KJ, Oparil S. What is or what is not a risk factor for arterial hypertension? Not Hamlet, but medical students answer that question. Int J Environ Res Public Health 2022;19(13):8206.
Guirguis-Blake JM, Evans CV, Webber EM, Coppola EL, Perdue LA, Weyrich MS. Screening for hypertension in adults: an updated systematic evidence review for the US preventive services task force [Internet]. Rockville (MD): Agency for healthcare research and quality (US); 2021 Apr. Report No. 20-05265-EF-1. PMID: 33970569.
Feng M, DiPetrillo K. Non-invasive blood pressure measurement in mice. Methods Mol Biol 2009;573:45–55.
Ohta H, Ohki T, Kanaoka Y, Koizumi M, Okano HJ. Pitfalls of invasive blood pressure monitoring using the caudal ventral artery in rats. Sci Rep 2017;7:41907.
Parasuraman S, Raveendran R. Measurement of invasive blood pressure in rats. J Pharmacol Pharmacother 2012;3(2):172–7.
Lin HT, Shiou YL, Jhuang WJ, Lee HC. Simultaneous electrocardiography recording and invasive blood pressure measurement in rats. Rats. J Vis Exp 2019;(143). doi: 10.3791/59115. PMID: 30774131.
Pauline M, Avadhany ST, Maruthy KN. Non-invasive measurement of systolic blood pressure in rats: A simple technique. AI Ameen J Med Sci 2011;4(4):365–9.
Fritz M, Rinaldi G. Blood pressure measurement with the tail-cuff method in Wistar and spontaneously hypertensive rats: Influence of adrenergic- and nitric oxide-mediated vasomotion. J Pharmacol Toxicol Methods 2008;58(3):215–21.
Panthiya L, Tocharus J, Onsa-ard A, Chaichompoo W, Suksamrarn A, Tocharus C. Hexahydrocurcumin ameliorates hypertensive and vascular remodeling in L-NAME-induced rats. Biochim Biophys Acta Mol Basis Dis 2022;1868(3):166317.
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Copyright (c) 2026 Maria Liaqat, Khadija Mastoor, Muhammad Naveed Mushtaq, Huma Sohail, Salman Haider Shah Hashmi, Aqsa Arif

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