RESUMO
<p><b>OBJECTIVE</b>To observe the effect of Shuanghuanglian injection on cerebral expression of nuclear factor-kappaB (NF-kappaB) in mice with viral encephalitis.</p><p><b>METHODS</b>The mice with experimental viral encephalitis received treatment with Shuanghuanglian injection at the dose of 0.2, 1.5, and 5 for 5, 10 or 20 consecutive days. The total RNA of the brain tissue was extracted to analyze the protein and mRNA expression of NF-kappaB using Western blotting and RT-PCR, respectively.</p><p><b>RESULTS</b>Compared with the control group, the mice with experimental viral encephalitis showed significantly increased protein and mRNA expressions of NF-kappaB (P<0.01). Treatment with Shuanghuanglian injection at the doses of 0.2 and 1.5 mg/kg significantly lowered NF-kappaB protein and mRNA expressions in the brain of mice with viral encephalitis (P<0.05), and the effect was even more obvious at the dose of 5 mg/kg (P<0.01).</p><p><b>CONCLUSION</b>Shuanghuanglian injection can reduce the expression of NF-kappaB in the brain of mice with viral encephalitis in a dose- and time-dependent manner.</p>
Assuntos
Animais , Masculino , Camundongos , Western Blotting , Encéfalo , Metabolismo , Medicamentos de Ervas Chinesas , Farmacologia , Usos Terapêuticos , Encefalite Viral , Tratamento Farmacológico , Genética , Metabolismo , Regulação da Expressão Gênica , Injeções , Camundongos Endogâmicos BALB C , NF-kappa B , Genética , Metabolismo , RNA Mensageiro , Genética , Metabolismo , Reação em Cadeia da Polimerase Via Transcriptase ReversaRESUMO
OBJECTIVE@#To investigate the optimal doses of X-ray irradiation and plasmid injection in the anti-tumor effect of the pcDNA3. 1-Egr. 1p-p16 gene combined with radiotherapy in vivo.@*METHODS@#We observed the anti-tumor effect of the pcDNA3. 1-Egr. 1p-p16 gene combined with radiotherapy with different doses of X-ray irradiation (2, 10, 20 Gy) and plasmid injection (10, 20, 30 microg) in nude mice with JF-305 pancreatic carcinoma, and detected the expression of p16 in tumor by RT-PCR.@*RESULTS@#The tumor growth rate of the nude mice irradiated locally with 20 Gy X-rays after the plasmid injection was significantly lower (P < 0.05 ) than that of the nude mice irradiated locally with 2 Gy or 10 Gy X-ray 3 days after the irradiation. The tumor growth rate of the nude mice injected locally with 20 microg or 30 microg plasmid was significantly lower (P <0.05 ) than that of the nude mice injected locally with 10 microg plasmid. Both pcDNA3. 1-Egr. 1p-p16 group and pcDNA3. 1-Egr. 1p-p16 +20 Gy group had p16 mRNA expression, but the mRNA level of pcDNA3. 1-Egr. 1p-p16 +20 Gy group was higher than that of pcD- NA3. 1-Egr. 1p-p16 group.@*CONCLUSION@#In the pcDNA3. 1-Egr. 1p-p16 gene combined with radiotherapy in vivo the optimal dose of X-ray irradiation was 20 Gy and the optimal dose of plasmid injection was 20 microg. The anti-tumor effect of pcDNA3. 1-Egr. 1p-p16 combined with radiotherapy is better than that of radiotherapy or gene therapy alone, which may be related with the enhanced p16 expression in tumor after the irradiation.