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David Calderón Guzmán,Ernestina Hernández García,Norma Osnaya Brizuela,Francisca Trujillo Jiménez,Gerardo Barragán Mejía,Daniel Santamaría del Ángel,Elvira Nuñez A,Liliana Carmona Aparicio,Hugo Juárez 대한약학회 2010 Archives of Pharmacal Research Vol.33 No.10
The effect that osteltamivir has on the metabolism of catecholamines and oxidative damage in the brains of young patients remains unclear. The purpose of this study was to measure the effects of oseltamivir, in the presence of oligoelements, on biogenic amines and select oxidative biomarkers in the brains of uninfected, young rats under normal conditions. The study was conducted using male Wistar rats intraperitoneally treated for three days with either a control dose of 0.9 % NaCl, oseltamivir (50 mg/kg), oligoelements (50 μL/rat), or oseltamivir (50 mg/kg) and oligoelements (50 μL/rat). The brain tissue extracted from the treated rats was used to determine the concentrations of adrenaline, noradrenaline, and dopamine, as well as the levels of GSH, lipid peroxidation, and ATPase activity. An increase in the concentration of adrenaline and noradrenaline and in the level of GSH in the group treated with oligoelements (p < 0.001) was observed, while the group treated with oseltamivir and oligoelements, the levels of dopamine increased (p < 0.001), and in the groups treated with oligoelements alone or combination with oseltamivir a decrease in lipid peroxidation was observed (p < 0.001). The results of this study suggest that the consumption of oseltamivir and oligoelements induce biphasic changes in the metabolism of catecholamines; thereby, inducing a protective mechanism against oxidative damage in the brains of young rats.
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Transcriptional profile of processing machinery of 30 end of mRNA in Trichomonas vaginalis
Miguel A ´ ngel Del-Moral-Stevenel,Alma Villalobos-Osnaya,Mavil Lo´pez-Casamichana,Laura Itzel Quintas-Granados,Ce´sar Lo´pez-Camarillo,Jose´ Manuel Ferna´ndez Sa´nchez,Selene Zarate-Guerra,Marı´a Eli 한국유전학회 2015 Genes & Genomics Vol.37 No.4
Trichomonas vaginalis is the causative agent of trichomonosis, a sexually transmitted disease (STD) that affects over 180 million people worldwide. This parasite is capable to infect the urogenital tract of women and men, both microenvironments might affect the expression of key genes that may be involved in the parasite pathogenesis. The processing of 30 end of mRNA promotes mRNA stability in many eukaryotes, however in T. vaginalis this molecular machinery is under research. By means of an in silico analysis we identified putative proteins of the 30 end mRNA processing machinery of T. vaginalis, and by RTPCR assays we evaluated the expression of eight of these genes in a female and male T. vaginalis isolates. According to the in silico analysis, the T. vaginalis 30 end mRNA processing machinery, comprises a similar complex and protein factors that those described in Homo sapiens, Arabidopsis thaliana, Saccharomyces cerevisiae and Entamoeba histolytica. The complex contains several subcomplexes, including cleavage and polyadenylation specificity factor (CPSF), cleavage stimulation factor (CstF), cleavage factor I (CFIm) and cleavage factor II (CFIIm). We demonstrated that genes tvpsf2p, tvcfi25, tvcpsf160, tvcpsf73, tvfip1, tvpap1, tvpc4 and tvpabp are expressed in male or female T. vaginalis isolates. Besides we identify two different isoforms of TvPC4. T. vaginalis genome contains most of genes encoding for 30 end mRNA processing, which may be transcriptionally active and could be involved in the capping, splicing, cleavage and polyadenylation of mRNAs in this parasite. Further studies are necessary to elucidate the biological meaning of our findings.
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