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Investigo
Doctoral thesis . 2011
Data sources: Investigo
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Doctoral thesis . 2016
License: CC BY NC ND
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Investigo
Doctoral thesis . 2011
License: CC BY NC ND
Data sources: Investigo
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Efectos del glufosinato, un pesticida organofosforado, sobre la neurotransmisión dopaminérgica estriatal : un estudio "in vivo" mediante microdiálisis cerebral

Authors: Nunes, Brenda Viviane Ferreira;

Efectos del glufosinato, un pesticida organofosforado, sobre la neurotransmisión dopaminérgica estriatal : un estudio "in vivo" mediante microdiálisis cerebral

Abstract

El glufosinato amónico (GLA) es la sal amónica de la fosfinotricina (D, L-homoalanina-4-metil-fosfinato), un aminoácido estructuralmente relacionado al glutamato. Es también pesticida del grupo de los organofosforados que produce sus efectos neurotóxicos a través de una posible activación de los receptores glutamatérgicos de tip NMDA, lo que produce excitoxicidad. Otro efecto bioquímico biencaracterizado del GLA es la inhibición de la glutamina sintetasa (GnS), un enzima que desempeña un papel esencial en el metabolismo del glutamato, convirtiéndolo (juntamente con el amoníaco) en glutamina. De esta forma, la GnS es responsable de la regulación metabólica de los niveles de glutamanto en el SNC y su inhibición puede producir un acúmulo de glutamato en el medio extracelular. Considerando que un aumento en los niveles de glutamato en el núcleo estriado o una activación de sus receptores puede inducir la liberación de dopamina en esta región, se puede suponer que el GLA, al actuar sobre lso receptores de glutamato o aumentar sus niveles extracelular, también podrá inducir la liberación de dopamina en el núcleo estriado de ratas. En base a ello, el objetivo del presente estudio fue evaluar los efectos de la administración de GLA sobre laliberación in vivo de dopamina ys sus metabolitos (DOPAC y HVA) en el núcleo estriado de ratas conscientes y en libre movimineto mediante la técnica de microdiálisis cerebral acoplada a la Cromatografía de Líquidos de Alta Eficacia con Detección Electroquímica (HPLC-EC). Otro objetivo del presente estudio fue determinar los mecanismos neuroquímicos por los cuales el GLA induce la liberaciónde dopamina en el núcleo estriado a través de la aplicación de diversas sustancias y medios modificados.

Country
Spain
Related Organizations
Keywords

3209 Farmacología, 3214 Toxicología

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
Average
Green