Melatonin, minocycline and ascorbic acid reduce oxidative stress and viral titers and increase survival rate in experimental Venezuelan equine encephalitis.

Venezuelan equine encephalitis (VEE) virus causes an acute central nervous system infection in human and animals. Melatonin (MLT), minocycline (MIN) and ascorbic acid (AA) have been shown to have antiviral activities in experimental infections; however, the mechanisms involved are poorly studied. Therefore, the aim of this study was to determine the effects of those compounds on the viral titers, NO production and lipid peroxidation in the brain of mice and neuroblastoma cultures infected by VEE virus.

[Methotrexate as inducer of proinflammatory cytokines by epithelial cells].

Methotrexate (MTX), a drug commonly used in childhood cancer, has also been indicated as a cytotoxic agent of the oral mucosa, which can trigger the inflammatory process and increase the vascularity of epithelial tissues during the early stages of oral mucositis. The aim of this study was to determine the production of proinflammatory cytokines IL-1beta, IL-6 y TNF-alpha in epithelial cell cultures treated with MTX. Epithelial cells of human larynx, obtained from the cell line Hep-2, were cultured with different doses of MTX during different incubation times.

[Frequency of gastrointestinal signs and symptoms of dengue. Analysis of a cohort of 1484 patients].

Dengue is characterized by fever, headache, arthralgia and myalgia. The presence of gastrointestinal signs and symptoms (GISS) is considered a sign of alarm in dengue; however, little information exists regarding the occurrence of these events. The aim of this study was to determine the frequency of gastrointestinal signs and symptoms in a cohort of patients with dengue.

Dengue nonstructural protein-1 status is not associated to circulating levels of interleukin-17, C-reactive protein and complement in children with acute dengue.

Background: During dengue infection increase in plasma level of various substances have been reported. Some of those molecules are related to the virus biology and others result of the interaction virus-host. Nonstructural protein-1 (NS1) secreted by dengue virus has been reported to have a role in dengue pathogenesis.