2017
DOI: 10.1016/j.neuropharm.2017.05.030
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L-Tyrosine availability affects basal and stimulated catecholamine indices in prefrontal cortex and striatum of the rat

Abstract: We previously found that L-tyrosine (L-TYR) but not D-TYR administered by reverse dialysis elevated catecholamine synthesis in vivo in medial prefrontal cortex (MPFC) and striatum of the rat (Brodnik et al., 2012). We now report L-TYR effects on extracellular levels of catecholamines and their metabolites. In MPFC, reverse dialysis of L-TYR elevated in vivo levels of dihydroxyphenylacetic acid (DOPAC) (L-TYR 250 – 1000 μM), homovanillic acid (HVA) (L-TYR 1000 μM) and 3-methoxy-4-hydroxyphenylglycol (MHPG) (L-T… Show more

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Cited by 14 publications
(12 citation statements)
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References 205 publications
(308 reference statements)
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“…Probes were flushed with Dulbecco’s phosphate buffered saline (in milliequivalents: 137 NaCl, 2.7 KCl, 0.5 MgCl2, 1.5 KH2PO4, 8.1 Na2HPO4, 1.2 CaCl2, and 5 % glucose at pH 7.4) overnight at 0.2 μl/min. Microdialysis experiments began on the following morning, and were completed as previously described (Brodnik et al, 2012; Brodnik et al, 2017a). …”
Section: 0 Methodsmentioning
confidence: 99%
“…Probes were flushed with Dulbecco’s phosphate buffered saline (in milliequivalents: 137 NaCl, 2.7 KCl, 0.5 MgCl2, 1.5 KH2PO4, 8.1 Na2HPO4, 1.2 CaCl2, and 5 % glucose at pH 7.4) overnight at 0.2 μl/min. Microdialysis experiments began on the following morning, and were completed as previously described (Brodnik et al, 2012; Brodnik et al, 2017a). …”
Section: 0 Methodsmentioning
confidence: 99%
“…No existen prácticamente estudios en modelos animales que evalúen el fenómeno de la resiliencia al desarrollo de vulnerabilidad al consumo de drogas tras la exposición a un estresor social. Un reciente estudio utilizando como modelo de estrés la exposición al olor de un depredador, clasificó a sus ratones en resilientes y susceptibles basándose en la presencia de ansiedad en el laberinto elevado en cruz y en la evitación del contexto asociado al olor (Brodnik, Double, España y Jaskiw, 2017). En este estudio, observaron que los ratones susceptibles presentaban un incremento a los efectos motores y dopaminérgicos de la cocaína así como una mayor motivación para autoadministrarse esta droga.…”
Section: Resiliencia Y Susceptibilidad Al Incremento De Los Efectos Runclassified
“…Sin embargo, estos estudios clasifican a los animales en resilientes o susceptibles basándose en la conducta social y la ansiedad mostrada por los animales al día siguiente de la última DS (Russo et al, 2012;Krishnan, 2014;Finnell y Wood, 2016). En estos estudios, los ratones resilientes no presentan anhedonia (Delgado et al, 2011), evitación social (Krishnan et al, 2007;Golden et al, 2011; Henriques-Alves y Queiroz, 2015) o evitación ante el olor de un depredador (Brodnik et al, 2017). Hasta le fecha ningún estudio ha caracterizado a los animales resilientes al incremento de los efectos reforzantes de las drogas de abuso y, por lo tanto, se desconoce si las diferentes estrategias de afrontamiento al estrés influyen en la sensibilidad a dichos efectos reforzantes.…”
Section: Diferente Afrontamiento Del Estrés Social En Animales Resiliunclassified
See 1 more Smart Citation
“…50 As a vital component of the basal ganglia, the blood pressure regulation pathway of the striatum is a cortical-basalthalamic-cortical loop. 51 Glutamate and g-GABA, as excitatory and inhibitory neurotransmitters, have been identied as the top two neurotransmitters that cause EH. 52 A high content of glutamate can activate Ca 2+ in the endothelial cells to protect the ischemic myocardium, inhibiting increasing secondary damage to the nerve function.…”
Section: Glutamate Metabolismmentioning
confidence: 99%