G. Viana

Publications160
h-index35
Citations3,696
Highly Influential Citations134
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Oxidative stress in the hippocampus after pilocarpine‐induced status epilepticus in Wistar rats
The role of oxidative stress in pilocarpine‐induced status epilepticus was investigated by measuring lipid peroxidation level, nitrite content, GSH concentration, and superoxide dismutase and… Expand
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Anticonvulsant activity of hydroalcoholic extracts from Erythrina velutina and Erythrina mulungu.
The anticonvulsant effects of hydroalcoholic extracts (HAEs) from the stem bark of Erythrina velutina and Erythrina mulungu on pentylenetetrazole (PTZ) and strychnine-induced seizure tests and the… Expand
  • 58
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Effects of Levetiracetam in Lipid Peroxidation Level, Nitrite–Nitrate Formation and Antioxidant Enzymatic Activity in Mice Brain After Pilocarpine-Induced Seizures
 Oxidative stress has been implicated in a large number of human degenerative diseases, including epilepsy. Levetiracetam (LEV) is a new antiepileptic agent with broad-spectrum effects on seizures… Expand
  • 66
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Anti-inflammatory effects and possible mechanism of action of lupeol acetate isolated from Himatanthus drasticus (Mart.) Plumel
BackgroundThe species Himatanthus drasticus is popularly known in Northeast Brazil as "janaguba" and belongs to the family Apocynaceae. The latex collected from its stem bark is used for several… Expand
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Pilocarpine-induced status epilepticus in rats: lipid peroxidation level, nitrite formation, GABAergic and glutamatergic receptor alterations in the hippocampus, striatum and frontal cortex
The aim of the study was to investigate the lipid peroxidation levels, nitrite formation, GABAergic and glutamatergic receptor densities in the hippocampus, frontal cortex and striatum of Wistar rats… Expand
  • 75
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Behavioral and neurochemical effects on rat offspring after prenatal exposure to ethanol.
The work studied behavioral and neurochemical alterations in 21-day-old pups, from both sexes (26 g on average) born from female Wistar rats administered daily with ethanol (0.5 or 4.0 g/kg, p.o.),… Expand
  • 101
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Anxiolytic‐like effect of Carvacrol (5‐isopropyl‐2‐methylphenol) in mice: involvement with GABAergic transmission
Carvacrol (5‐isopropyl‐2‐methylphenol) is a monoterpenic phenol present in the essencial oil of many plants. It is the major component of the essential oil fraction of oregano and thyme. This work… Expand
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Attenuating effects of melatonin on pilocarpine-induced seizures in rats.
Daily melatonin (10-50 mg/kg, i.p.) treatment at 08.30 h or 17.00 h for 1 week of female rats (2-months-old) increased the latency to the appearance of the first convulsion in the pilocarpine-induced… Expand
  • 61
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Piplartine, an amide alkaloid from Piper tuberculatum, presents anxiolytic and antidepressant effects in mice.
In the present work, we studied the effects of piplartine (PIP), an amide alkaloid isolated from the roots of Piper tuberculatum (Piperaceae), in the elevated plus maze, open field, rota rod,… Expand
  • 70
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A possible mechanism for anxiolytic and antidepressant effects of alpha- and beta-amyrin from Protium heptaphyllum (Aubl.) March
In the present study, we examined the anxiolytic and antidepressant effects of the mixture of alpha- and beta-amyrin (AMY), pentacyclic triterpenes isolated from the stem bark resin of Protium… Expand
  • 96
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