Mechanisms of aluminium neurotoxicity in oxidative stress-induced ...

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AIMS Chapter 3 The third major aim of this thesis is to clarify the capacity of aluminium to modify the oxidant level of certain brain regions and to augment the striatal DAergic neurodegeneration in a 6-OHDA model of PD. The specific objectives to reach this aim are: 4) To investigate the in vivo effects induced by aluminium on indices of oxidative 76 stress by quantification of lipid peroxidation (TBARS) and the oxidant status of proteins (PCC, PTC), in the cerebellum, ventral midbrain, cortex, hippocampus, and striatum of rats. 5) To assess the in vivo effects of aluminium on the activity of certain antioxidant enzymes, such as SOD, GPx and CAT, in the cerebellum, ventral midbrain, cortex, hippocampus, and striatum of rats. 6) To measure the in vitro effects of aluminium on the activity of some antioxidant enzymes (SOD, GPx, CAT) and the monoamine oxidase activity (MAO-A and MAO-B). 7) To study the ability of aluminium to potentiate the capacity of 6-OHDA administered in the third ventricle in an experimental model of PD to cause oxidative stress (lipid peroxidation and protein oxidation) in ventral midbrain and striatum and to induce neurodegeneration in striatal DAergic terminals.
OBJETIVOS
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Universidade de Santiago de Compost
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Don Ramón Soto Otero y Doña Estef
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Acknowledgements The work of this t
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Abbreviations AA ascorbic acid AD A
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Abbreviations (continuation) PCC pr
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List of figures (continuation) Chap
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TABLE OF CONTENTS INTRODUCTION ....
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CHAPTER 3 Brain oxidative stress an
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INTRODUCTION PARKINSON’S DISEASE
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INTRODUCTION PD is found in all eth
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Bradykinesia INTRODUCTION Bradykine
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INTRODUCTION predate the occurrence
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Table 1: Differential diagnostic in
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INTRODUCTION Table 3: National Inst
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Figure 4: Dopamine catabolism (Mén
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The basal ganglia INTRODUCTION The
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The death of SNpc DAergic neurons I
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INTRODUCTION the dorsomedial part o
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INTRODUCTION characterized as are l
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INTRODUCTION (Olanow et al. 2004).
Page 49 and 50: Etiology and pathogenesis of PD INT
Page 51 and 52: Ageing INTRODUCTION Ageing remains
Page 53 and 54: INTRODUCTION The finding of MPTP to
Page 55 and 56: INTRODUCTION may clarify why many n
Page 57 and 58: Misfolding and aggregation of prote
Page 59 and 60: INTRODUCTION (E3) (Figure 18A). Los
Page 61 and 62: INTRODUCTION in connection with Par
Page 63 and 64: INTRODUCTION Oxidative damage happe
Page 65 and 66: DA metabolism as a source of ROS IN
Page 67 and 68: Contribution of oxidative and nitro
Page 69 and 70: Excitotoxicity INTRODUCTION Glutama
Page 71 and 72: INTRODUCTION al. 1996, Cicchetti et
Page 73 and 74: Experimental models of PD INTRODUCT
Page 75 and 76: INTRODUCTION induce selective DAerg
Page 77 and 78: ALUMINIUM General features INTRODUC
Page 79 and 80: INTRODUCTION Varying amounts of alu
Page 81 and 82: INTRODUCTION and antiperspirants co
Page 83 and 84: INTRODUCTION approximately 3% of al
Page 85 and 86: Excretion INTRODUCTION As insoluble
Page 87 and 88: INTRODUCTION 3.5 mg may be increase
Page 89 and 90: INTRODUCTION Oteiza 1999), non-iron
Page 91 and 92: Aluminium as a cell membrane menace
Page 93 and 94: INTRODUCTION mobilization of Ca 2+
Page 95: Aluminium impairs neurotransmission
Page 99: AIMS OF THE PRESENT THESIS The main
Page 104 and 105: OBJETIVOS 3) Evaluar de forma preci
Page 107: CHAPTER 1 Time-course of brain oxid
Page 110 and 111: CHAPTER 1 INTRODUCTION 86 6-OHDA (2
Page 112 and 113: CHAPTER 1 MATERIALS AND METHODS Che
Page 114 and 115: CHAPTER 1 followed by centrifugatio
Page 116 and 117: CHAPTER 1 RESULTS Effects of 6-OHDA
Page 118 and 119: CHAPTER 1 DISCUSSION 94 As shown by
Page 120 and 121: CHAPTER 1 strategies or to study th
Page 122 and 123: CHAPTER 1 Fig. 2 Changes in PCC in
Page 125: CHAPTER 2
Page 129 and 130: ABSTRACT CHAPTER 2 In the present w
Page 131 and 132: MATERIALS AND METHODS Chemicals CHA
Page 133 and 134: CHAPTER 2 atomization used were 1,5
Page 135 and 136: DISCUSSION CHAPTER 2 Aluminium ente
Page 137: Table 1. Graphite furnace programme
Page 141: CHAPTER 3 Brain oxidative stress an
Page 144 and 145: CHAPTER 3 INTRODUCTION 120 The huma
Page 146 and 147: CHAPTER 3 MATERIALS AND METHODS Che
Page 148 and 149: CHAPTER 3 1:15 for hippocampus and
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CHAPTER 3 initially incorporated to
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CHAPTER 3 RESULTS In vivo effects o
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CHAPTER 3 Effects of aluminium admi
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CHAPTER 3 DISCUSSION 132 Aluminium
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CHAPTER 3 hippocampus, showed simil
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CHAPTER 3 assume that the distinct
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CHAPTER 3 Fig. 1 Levels of TBARS (A
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CHAPTER 3 Fig. 2 Enzyme activity of
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CHAPTER 3 Fig. 3 Microphotographs s
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CHAPTER 3 Fig. 5 Levels of TBARS (A
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CHAPTER 3 Fig. 6 In vitro effects o
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SUMMARY
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SUMMARY values were attained at 48
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SUMMARY neurodegeneration in the DA
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CONCLUSIONS The results obtained in
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13) Aluminium does affect neither M
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RESUMEN RESUMEN Desde el punto de v
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RESUMEN zonas cerebrales excepto en
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CONCLUSIONES
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CONCLUSIONES Capítulo 2 4) La admi
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CONCLUSIONES 172 En base a las conc
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Publications as a direct result fro
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