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

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CONCLUSIONES 172 En base a las conclusiones que se acaban de enumerar, establecemos, que los resultados expuestos confirman el potencial del aluminio como factor de riesgo en el desarrollo de la enfermedad de Parkinson. Este metal actúa principalmente como un pro-oxidante y es capaz de disminuir las actividades de los enzimas antioxidantes. Su toxicidad observada en las diferentes áreas cerebrales estudiadas (cerebelo, mesencéfalo ventral, corteza y estriado) probablemente se halla mediada por la contribución del anión superóxido de aluminio AlO2 ●2+ y por daños oxidativos a células inducidos por otros radicales libres. Cabe destacar que los resultados observados en el hipocampo (alto contenido en aluminio y estado oxidante no aumentado) pueden ser causados por uno o varios mecanismos compensatorios de la barrera hemato-hipocampal, pero esta idea necesita ser corroborada y caracterizada por investigaciones futuras.
APPENDIX
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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).
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Etiology and pathogenesis of PD INT
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Ageing INTRODUCTION Ageing remains
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INTRODUCTION The finding of MPTP to
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INTRODUCTION may clarify why many n
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Misfolding and aggregation of prote
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INTRODUCTION (E3) (Figure 18A). Los
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INTRODUCTION in connection with Par
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INTRODUCTION Oxidative damage happe
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DA metabolism as a source of ROS IN
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Contribution of oxidative and nitro
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Excitotoxicity INTRODUCTION Glutama
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INTRODUCTION al. 1996, Cicchetti et
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Experimental models of PD INTRODUCT
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INTRODUCTION induce selective DAerg
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ALUMINIUM General features INTRODUC
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INTRODUCTION Varying amounts of alu
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INTRODUCTION and antiperspirants co
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INTRODUCTION approximately 3% of al
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Excretion INTRODUCTION As insoluble
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INTRODUCTION 3.5 mg may be increase
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INTRODUCTION Oteiza 1999), non-iron
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Aluminium as a cell membrane menace
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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
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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
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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
Page 150 and 151: CHAPTER 3 initially incorporated to
Page 152 and 153: CHAPTER 3 RESULTS In vivo effects o
Page 154 and 155: CHAPTER 3 Effects of aluminium admi
Page 156 and 157: CHAPTER 3 DISCUSSION 132 Aluminium
Page 158 and 159: CHAPTER 3 hippocampus, showed simil
Page 160 and 161: CHAPTER 3 assume that the distinct
Page 162 and 163: CHAPTER 3 Fig. 1 Levels of TBARS (A
Page 164 and 165: CHAPTER 3 Fig. 2 Enzyme activity of
Page 166 and 167: CHAPTER 3 Fig. 3 Microphotographs s
Page 168 and 169: CHAPTER 3 Fig. 5 Levels of TBARS (A
Page 170 and 171: CHAPTER 3 Fig. 6 In vitro effects o
Page 173: SUMMARY
Page 176 and 177: SUMMARY values were attained at 48
Page 178 and 179: SUMMARY neurodegeneration in the DA
Page 181 and 182: CONCLUSIONS The results obtained in
Page 183: 13) Aluminium does affect neither M
Page 187 and 188: RESUMEN RESUMEN Desde el punto de v
Page 189 and 190: RESUMEN zonas cerebrales excepto en
Page 191: CONCLUSIONES
Page 194 and 195: CONCLUSIONES Capítulo 2 4) La admi
Page 199 and 200: Publications as a direct result fro
Page 201: REFERENCES
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