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Effect of rhubarb on neonatal rats with bronchopulmonary dysplasia induced by hyperoxia / 中国当代儿科杂志
Chinese Journal of Contemporary Pediatrics ; (12): 410-415, 2018.
Artigo em Chinês | WPRIM | ID: wpr-689616
ABSTRACT
<p><b>OBJECTIVE</b>To study the effect of rhubarb on neonatal rats with bronchopulmonary dysplasia (BPD) induced by hyperoxia.</p><p><b>METHODS</b>A total of 64 rats (postnatal day 4) were randomly divided into four groups air control, rhubarb control, hyperoxia model, and hyperoxia+rhubarb (n=16 each). The rats in the hyperoxia model and hyperoxia+rhubarb groups were exposed to hyperoxia (60% O2) to establish a BPD model. The rats in the rhubarb control and hyperoxia+rhubarb groups were given rhubarb extract suspension (600 mg/kg) by gavage daily. The pathological changes of lung tissue were evaluated by hematoxylin-eosin staining on postnatal days 14 and 21. The content of malondialdehyde (MDA) and the activity of superoxide dismutase (SOD) were measured by spectrophotometry. The mRNA and protein expression levels of tumor necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) were determined by RT-PCR and Western blot respectively.</p><p><b>RESULTS</b>The hyperoxia model group showed reduced alveolar number, increased alveolar volume, and simplified alveolar structure, which worsened over the time of exposure to hyperoxia. These pathological changes were significantly reduced in the hyperoxia+rhubarb group. On postnatal days 14 and 21, compared with the air control and rhubarb control groups, the hyperoxia model group had significantly reduced radical alveolar count (RAC), significantly reduced activity of SOD in the lung tissue, and significantly increased content of MDA and mRNA and protein expression levels of TNF-α and IL-6 (P<0.05). Compared with the hyperoxia model group, the hyperoxia+rhubarb group had significantly increased RAC, significantly increased activity of SOD in the lung tissue, and significantly reduced content of MDA and mRNA and protein expression levels of TNF-α and IL-6 (P<0.05).</p><p><b>CONCLUSIONS</b>Rhubarb may play a protective role in rats with BPD induced by hyperoxia through inhibiting inflammatory response and oxidative stress.</p>
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Patologia / Rheum / Superóxido Dismutase / Displasia Broncopulmonar / Extratos Vegetais / Fator de Necrose Tumoral alfa / Ratos Sprague-Dawley / Hiperóxia / Usos Terapêuticos / Modelos Animais de Doenças Tipo de estudo: Estudo prognóstico Limite: Animais Idioma: Chinês Revista: Chinese Journal of Contemporary Pediatrics Ano de publicação: 2018 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Patologia / Rheum / Superóxido Dismutase / Displasia Broncopulmonar / Extratos Vegetais / Fator de Necrose Tumoral alfa / Ratos Sprague-Dawley / Hiperóxia / Usos Terapêuticos / Modelos Animais de Doenças Tipo de estudo: Estudo prognóstico Limite: Animais Idioma: Chinês Revista: Chinese Journal of Contemporary Pediatrics Ano de publicação: 2018 Tipo de documento: Artigo