Investigating the effects of vanillin on the 6-hydroxydopamine model of Parkinson’s disease

Dissertant

Abu Dhawabah, Rasha Khalid Ali

Thesis advisor

Abu Rumaylah, Amjad

University

Isra University

Faculty

Faculty of Pharmacy

University Country

Jordan

Degree

Master

Degree Date

2019

English Abstract

Introduction: Parkinson’s disease (PD) is a progressive neurodegenerative disorder belonging to a group of conditions called motor system disorders.

PD is primarily characterized by loss of structure in dopaminergic neurons in the substantia nigra para compacta (SNpc).

In recent years; neuroinflammation became one of the significant characteristics that may play a role in the progression of PD.

Vanillin is a candidate compound for neuroprotection in PD, it has antioxidant, anti-inflammatory properties and an ability to cross the BBB.

Aim: The aim of this study is to investigate the effects of vanillin on the 6-hydroxydopamine (6-OHDA) rodent model of PD.

This was done by comparing 6-OHDA lesioned rats in the presence and absence of vanillin.

Also, 6-OHDA is very commonly used to induce rodent model of PD, where it produces pathogenesis, progression, motor impairments and creates degeneration of dopaminergic neurons in the SNpc with similarities to human PD.

As an animal model of PD, 6-OHDA proved its ability in validating and understanding the role of cell death.

Our supposed work demonstrated that vanillin attenuates 6-OHDA-induced cytotoxicity Method: Male rats weighing between (200-250) g were randomized and divided into groups of 6 rats per group.

Group A was considered as control and injected with vehicle only, group B animals were subjected to 6-OHDA alone, and group C was given 6- OHDA + intraperitoneal (i.p) vanillin (20mg/kg) and 3 days later 6-OHDA surgery, group D was subjected to 6-OHDA + (i.p) vanillin 7 days after surgery.

On the other hand, group E where 6-OHDA lesioned rats were treated with oral vanillin and 3 days later 6-OHDA surgery, and finally group F where 6-OHDA lesioned rats were treated with oral vanillin 7days after surgery.

The lesion severity was assessed behaviorally by apomorphine rotation test, neurochemically, and through immunohistochemistry.

Results: Seven days after intracerebral injection of 6-OHDA and following apomorphine challenge, 6-OHDA lesioned rats receiving vanillin showed significantly lower tight contralateral circling in comparison to 6-OHDA only group.

Consistent with these observations, striatal tissue dopamine concentrations were significantly higher in 6-OHDA + vanillin treated rats versus 6-OHDA only group, the assay of TH immunoreactivity production was greatly reduced in the substantia nigra (SN) of 6-OHDA rats.

While rats co-administered with vanillin presented an increase of THpositive cell bodies.

Conclusion: Initial expectations for vanillin (20mg/kg) showed a promising results aspect as a neuroprotective or neuropreservative and may have potential in the management of PD.

In conclusion, our work identified that vanillin act as neuroprotective compound with a capacity to slow down the degeneration of dopaminergic neuron, regenerate lost dopaminergic neurons and protect dopaminergic neurons that have not yet been affected by the disease which if translated therapeutically would offer a significant advance in PD treatment and prevention.

Main Topic

Pharmacology

No. of Pages

77

Table of Contents

Table of contents.

Abstract.

Abstract in Arabic.

Chapter One : Introduction.

Chapter Two : Literature review.

Chapter Three : Materials and methods.

Chapter Four : Results.

Chapter Five : Discussion.

Chapter Six : Conclusion and future recommendations.

References.

American Psychological Association (APA)

Abu Dhawabah, Rasha Khalid Ali. (2019). Investigating the effects of vanillin on the 6-hydroxydopamine model of Parkinson’s disease. (Master's theses Theses and Dissertations Master). Isra University, Jordan
https://search.emarefa.net/detail/BIM-913509

Modern Language Association (MLA)

Abu Dhawabah, Rasha Khalid Ali. Investigating the effects of vanillin on the 6-hydroxydopamine model of Parkinson’s disease. (Master's theses Theses and Dissertations Master). Isra University. (2019).
https://search.emarefa.net/detail/BIM-913509

American Medical Association (AMA)

Abu Dhawabah, Rasha Khalid Ali. (2019). Investigating the effects of vanillin on the 6-hydroxydopamine model of Parkinson’s disease. (Master's theses Theses and Dissertations Master). Isra University, Jordan
https://search.emarefa.net/detail/BIM-913509

Language

English

Data Type

Arab Theses

Record ID

BIM-913509