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Rats offspring exposed to Ipomoea Carnea and handling during gestation: neurochemical evaluation BABT
Schwarz,Aline; Hosomi,Rosana Zoriki; Flório,Jorge Camilo; Bernardi,Maria Martha; Górniak,Silvana Lima; Spinosa,Helenice Souza.
The present study evaluated the central monoamine levels of male and female adult rat offspring exposed orally by gavage to 0.0, 0.7, 3.0 and 15.0 mg/kg I. carnea aqueous extract daily, from gestation day (GD) 5 to GD 21. Several alterations in the monoamine activity systems were observed. However, the major differences were noted between the 0.0 mg/kg and the no gavage control groups, showing that alterations showing that alterations were not due to the alterations to the aqueous extract. The control data showed that gavage and handling of dams were stressful enough to produce a significant decline in 3,4-dihydroxyphenylacetic acid (DOPAC) and an increase in vanilmandelic acid (VMA), indicating decreased dopamine (DA) and enhanced norepinephrine (NE)...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ipomoea carnea; Neurotransmitter; Perinate; Rats; Stress.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300009
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Age related interaction of dopamine and serotonin synthesis in striatal synaptosomes Biocell
Messripour,Manoochehr; Mesripour,Azadeh.
Tyrosine hydroxylase and tryptophan hydroxylase are key rate limiting enzymes in the biosyn-thesis of dopamine and serotonin, respectively. Since both enzymes are active in striatum, and affected by age, this study was undertaken to investigate interaction between dopamine and serotonin synthesis in brain striatal synaptosomes of aging rat. Male Wistar rats (3 and 30 month old) were killed by decapitation and brain striatal synaptosomes were prepared by discontinuous Ficoll/sucrose gradient technique. Synaptosomes were incubated in the presence of added pargiline (monoamineoxidase inhibitor), dopamine or serotonin synthesized during 25 min was measured by HPLC, employing electrochemical detection. Dopamine synthesis in synaptosomes prepared from young...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aging; Nerve ending; Neurotransmitter; Tyrosine hydroxylase; Tryptophan hydroxylase.
Ano: 2013 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452013000200001
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Copper II - polar amino acid complexes: toxicity to bacteria and larvae of Aedes aegypti Anais da ABC (AABC)
RODRIGUES,THIAGO A.D.; ARRUDA,EDUARDO J. DE; FERNANDES,MAGDA F.; CARVALHO,CLAUDIO T. DE; LIMA,ALESSANDRA R.; CABRINI,ISAÍAS.
ABSTRACT Control strategies using insecticides are sometimes ineffective due to the resistance of the insect vectors.In this scenario new products must be proposed for the control of insect vectors.The complexes L-aspartate Cu (II) and L-glutamate-Cu (II) complexes were synthesized and characterized by elemental analysis, visible ultraviolet, infrared spectroscopy and potentiometric titration. The toxicity of these complexes was analyzed in Aedes aegypti (Diptera: Culicidae) larvae and Gram-negative and Gram-positive bacteria. The interaction between the ligands and the amino acid balance and the distribution of the species as a function of pH were discussed. The lethal concentration median (LC50) for Ae. aegypti larvae were: L-glutamic acid-Cu (II) -...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neurotransmitter; Bacteria; Population control of vectors; Metal-insecticide; Mosquito.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502273
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In silico analysis of binding interaction of conantokins with NMDA receptors for potential therapeutic use in Alzheimer’s disease J. Venom. Anim. Toxins incl. Trop. Dis.
Batool,Maleeha Waqar and Sidra.
Abstract Background The N-methyl-D-aspartate (NMDA) receptors are glutamate receptors that play vital roles in central nervous system development and are involved in synaptic plasticity, which is an essential process for learning and memory. The subunit N-methyl D-aspartate receptor subtype 2B (NR2B) is the chief excitatory neurotransmitter receptor in the mammalian brain. Disturbances in the neurotransmission mediated by the NMDA receptor are caused by its overexposure to glutamate neurotransmitter and can be treated by its binding to an antagonist. Among several antagonists, conantokins from cone snails are reported to bind to NMDA receptors. Methods This study was designed to analyze the binding mode of conantokins with NMDA receptors in both humans...
Tipo: Info:eu-repo/semantics/article Palavras-chave: N-methyl-D-aspartate; Glutamate; Synaptic plasticity; NR2B; Neurotransmitter; Antagonists; Conantokins; Docking; In silico; Alzheimer’s dieases.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992017000100317
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