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

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INTRODUCTION Figure 5: Dopamine pathways (CNSforum www.cnsforum.com) Figure 6: Distribution of DA receptors in normal brain (CNSforum www.cnsforum.com) 14
The basal ganglia INTRODUCTION The basal ganglia (BG) constitute mainly five subcortical nuclei located deep in the hemispheres: the substantia nigra with its pars compacta (SNpc) and pars reticularis (SNpr), the striatum (caudate nucleus and putamen), the internal and external segments of globus pallidus (GPi and GPe), and the subthalamic nucleus (STN) (Figure 7). The BG form a complex network of anatomically and functionally segregated loops involved in the regulation of emotional and cognitive functions and particularly in the control of cortically initiated motor activity, which if disturbed leads to some form of movement disorder. Figure 7: The basal ganglia (Society for Neuroscience www.sfn.org) These parallel loops have been functionally subdivided into motor, oculomotor, limbic, association and orbitofrontal loops (Alexander et al. 1986, Alexander and Crutcher 1990, Middleton and Strick 2000). The striatum is the primary input structure of BG as it receives excitatory glutamatergic signals from many areas of the sensory motor cortex and thalamus, as well as a dense innervation from midbrain DA neurons. The most abundant striatal neurons are striatonigral and striatopallidal neurons 15
Page 1: Universidade de Santiago de Compost
Page 5: Don Ramón Soto Otero y Doña Estef
Page 9 and 10: Acknowledgements The work of this t
Page 11 and 12: Abbreviations AA ascorbic acid AD A
Page 13: Abbreviations (continuation) PCC pr
Page 16 and 17: List of figures (continuation) Chap
Page 19 and 20: TABLE OF CONTENTS INTRODUCTION ....
Page 21: CHAPTER 3 Brain oxidative stress an
Page 25 and 26: INTRODUCTION PARKINSON’S DISEASE
Page 27 and 28: INTRODUCTION PD is found in all eth
Page 29 and 30: Bradykinesia INTRODUCTION Bradykine
Page 31 and 32: INTRODUCTION predate the occurrence
Page 33 and 34: Table 1: Differential diagnostic in
Page 35 and 36: INTRODUCTION Table 3: National Inst
Page 37: Figure 4: Dopamine catabolism (Mén
Page 41 and 42: The death of SNpc DAergic neurons I
Page 43 and 44: INTRODUCTION the dorsomedial part o
Page 45 and 46: INTRODUCTION characterized as are l
Page 47 and 48: 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+
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Aluminium impairs neurotransmission
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AIMS OF THE PRESENT THESIS The main
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OBJETIVOS
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OBJETIVOS 3) Evaluar de forma preci
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CHAPTER 1 Time-course of brain oxid
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CHAPTER 1 INTRODUCTION 86 6-OHDA (2
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CHAPTER 1 MATERIALS AND METHODS Che
Page 114 and 115:
CHAPTER 1 followed by centrifugatio
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CHAPTER 1 RESULTS Effects of 6-OHDA
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CHAPTER 1 DISCUSSION 94 As shown by
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CHAPTER 1 strategies or to study th
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CHAPTER 1 Fig. 2 Changes in PCC in
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CHAPTER 2
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ABSTRACT CHAPTER 2 In the present w
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MATERIALS AND METHODS Chemicals CHA
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CHAPTER 2 atomization used were 1,5
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DISCUSSION CHAPTER 2 Aluminium ente
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Table 1. Graphite furnace programme
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CHAPTER 3 Brain oxidative stress an
Page 144 and 145:
CHAPTER 3 INTRODUCTION 120 The huma
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CHAPTER 3 MATERIALS AND METHODS Che
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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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REFERENCES
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