Navegando por Palavras-chave "Adenoviruses, human"

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    Uso de ganciclovir 0,15% gel para tratamento de ceratoconjuntivite adenoviral
    (Conselho Brasileiro de Oftalmologia, 2011-12-01) Yabiku, Simone Tiemi [UNIFESP]; Yabiku, Mariann Midori [UNIFESP]; Bottós, Kátia Mantovani [UNIFESP]; Araújo, Aline Lutz [UNIFESP]; Freitas, Denise de [UNIFESP]; Belfort, Rubens Junior [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    PURPOSE: To evaluate the efficacy and the toxicity of 0.15% ganciclovir gel in the treatment of adenoviral conjunctivitis and in preventing ocular complications after adenoviral conjunctivitis, such as corneal infiltrates and pseudomembranes. METHODS: Double blind, interventional and randomized clinical trial. Thirty-three patients with clinical diagnosis of adenoviral conjunctivitis with onset of symptoms for five or less days were randomized in two groups: Group 1 (treatment) with 19 patients used ganciclovir gel and Group 2 (control) with 14 patients used artificial tears without preservative. Patients answered a questionnaire of signs and symptoms and were submitted to an ophthalmologic exam. On the 6th and 10th days of treatment they answered the same questions and were re-examined by the same ophthalmologist. Signs and symptoms were compared. T Student, Mann-Whitney e Wilcoxon tests were used to statistical analysis. RESULTS: Trend of better response in the treatment group in relation of patients' perception, besides faster improvement of this group compared to the control group (p=0.26). There were lower transmission to the fellow eye (p=0.86) and to people living together (p=0.16) in the treatment group. No statistical difference related to signs and symptoms of conjunctivitis were found comparing both groups. We observed statistical difference in pain, itch and photophobia only in the treatment group, comparing each group alone. No toxicity and more tolerance of the ganciclovir were observed. There was no statistical difference in the ocular complications after conjunctivitis between both groups. CONCLUSIONS: This study showed trend of better and faster response of the signs and symptoms of the patients treated with ganciclovir compared with the control group, but with no statistical significant. These results need to be confirmed by additional studies, with more patients and longer follow-up. Clinical Trails.gov: NCT01349452
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    O uso de interferência por RNA para a análise da função do gene E2F1 na progressão do ciclo celular em células tumorais
    (Universidade Federal de São Paulo (UNIFESP), 2010-10-27) Oliveira, Maria Theresa de [UNIFESP]; Monteiro, Hugo Pequeno [UNIFESP]; Universidade Federal de São Paulo (UNIFESP)
    E2F1 belongs to a family of transcription factors and plays a central role in controlling the expression of genes related to regulation of the cell-cycle progression, since it activates genes involved in DNA synthesis. The activity of E2F1 is regulated by pRB protein, that when phosphorylated by cyclin-dependent kinases cyclins (Cyclins/CDK) releases this transcription factor, thereby promoting proliferation. The dysfunction of the complex regulatory pathway of cell division can lead to excessive proliferation, which overexpression of E2F1 is quite common in different types of tumors. This phenomenon may be the main factor for the high proliferation of tumor cells. Thus, inhibition of E2F1 activity by RNA interference (RNAi) may be promising as a treatment for decreased proliferation of melanoma cells. Therefore, the purpose of this work is the inactivation of the E2f1 gene through RNAi in B16mCAR cells, derived from C57BL/6’s melanoma and overexpresses the CAR receptor, and also verifies the effects of its absence on cell proliferation in vitro and in vivo.