Neuroprotective effect of valsartan versus pramipexole on mouse model of MPTP-induced Parkinson’s disease

Authors

DOI:

https://doi.org/10.18413/rrpharmacology.11.588

Abstract

Introduction: Parkinson’s disease is the second most common complex progressive neurodegenerative disease after Alzheimer’s disease. Tremor, stiffness, and bradykinesia are common symptoms, additionally to postural instability as the condition advances. Valsartan is prescribed to treat hypertension and heart failure, and it mainly acts by antagonizing angiotensin II (Ang II) actions at the AT1 receptor. Aim of the Study: The present study aimed to investigate the neuroprotective effect of valsartan on experimentally induced Parkinson’s disease in mice

Materials and Methods: This study involved 40 male mice grouped into four groups (n=10). Group 1: The normal/healthy group obtained filtered water orally for 25 days. Group 2 got MPTP(30 mg/kg/day) intraperitoneally (IP) for 5 days, starting on day 15 to the close of day 19. Group 3 was given oral pramipexole (1 mg/kg/day) for 25 days, followed by an induction dose of MPTP (30 mg/kg/day) (IP) 60 minutes later. Group 4 received valsartan orally (30 mg/kg/day) for 25 days and then underwent induction with MPTP (30 mg/kg/day) (IP) 60 minutes after valsartan; on day 26, all animals were euthanized, and a biopsy of brain tissues was collected for examination.

Results and Discussion: Valsartan substantially decreased levels of MDA, IL-1β, and α-synuclein compared to those in the induction group. Valsartan also substantially increased dopamine levels while producing a non-significant decrease in caspase-3 levels. Moreover, histopathological examination of valsartan exerted good improvement as opposed to induction.

Conclusion: Valsartan produced neuroprotective effect through multiple mechanisms on MPTPexacerbated PD mouse model.

Graphical Abstract

Keywords:

Parkinson’s disease, MPTP, α-synuclein, AT1Rs, anti-hypertensive drugs, Valsartan

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Author Contribution

Asmaa Abdulwahab Ahmed, College of Medicine, Al-Nahrain University

PhD in Pharmacology, Department of Pharmacology, College of Medicine, Al-Nahrain University, Baghdad, Iraq; e-mail: assmaahmed284@yahoo.com; ORCID ID: https://orcid.org/0009-0000-9661-8443. Data gathering, data analysis, execution of experimental procedures, and writing the original version of the manuscript.

Hayder Ridha-Salman, Al-Mustaqbal University, College of Pharmacy

PhD in Pharmacology, College of Pharmacy, Al-Mustaqbal University, Babylon, Iraq; e-mail: ridha@gmail.com; ORCID ID: https://orcid.org/0000-0003-1594-4883. Acquired data, organized study materials, rewriting and revising the final version of the manuscript, and performing statistical data calculations.

Haitham Mahmood Kadhim, College of Pharmacy, Al-Nahrain University

PhD in Pharmacology, Professor, Department of Pharmacy, Dijlah University College; Department of Pharmacology and Toxicology, College of Pharmacy, Al-Nahrain University, Baghdad, Iraq; e-mail: haitham.mahmod@nahrainuniv.edu.iq; ORCID ID: https://orcid.org/0000-0001-8097-2560. Developed and planned the study idea, supervision of the study, revision and rearrangement of the manuscript, final approval, and agreement on all aspects of the research.

Elaf S.M Khafaja, College of Medicine, Al-Mustaqbal University

MSc in Psychology, College of Medicine, Al-Mustaqbal University, Babylon, Iraq; e-mail: salah@uomus.edu.iq; ORCID ID: https://orcid.org/0009-0000-3807-2286. Editing of the revised manuscript, critical performance of statistical analysis, verification of results with figures, and improvement of manuscript consistency.

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10-12-2025

How to Cite

Abdulwahab Ahmed A, Ridha-Salman H, Kadhim HM, Khafaja ES (2025) Neuroprotective effect of valsartan versus pramipexole on mouse model of MPTP-induced Parkinson’s disease. Research Results in Pharmacology 11(4): 42–55. https://doi.org/10.18413/rrpharmacology.11.588

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Section

Experimental Pharmacology