Silica induced early fibrogenic reaction in lung of mice ameliorated by Nyctanthes arbortristis extract / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 215-222, 2002.
Artículo
en Inglés
| WPRIM
| ID: wpr-264314
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the pharmacological effect of Nyctanthes arbortristis (NAT) leaf extract in the prevention of lung injury induced by silica particles.</p><p><b>METHOD</b>Lung injury was induced in Swiss mice through inhalation exposure to silica particles (< 5 mu) using a Flow Past Nose Only Inhalation Chamber at the rate of -10 mg/m3 respirable mass for 5 h. Lung bronchoalveolar lavage (BAL) fluid collected between 48 and 72 h was subjected to protein profiling by electrophoresis and cytokine evaluation by solid phase sandwich ELISA. Lung histopathology was performed to evaluate lung injury.</p><p><b>RESULTS</b>Inhalation of silica increased the level of tumor necrosis factor-alpha (TNF-alpha), and of the 66 and 63 kDa peptides in the BAL fluid in comparison to sham-treated control. Pre-treatment of silica exposed mice with NAT leaf extract significantly prevented the accumulation of TNF-alpha in the BAL fluid, but the 66 and 63 kDa peptides remained unchanged. The extract was also effective in the prevention of silica-induced early fibrogenic reactions like congestion, edema and infiltration of nucleated cells in the interstitial alveolar spaces, and thickening of alveolar septa in mouse lung.</p><p><b>CONCLUSION</b>NAT leaf extract helps in bypassing silica induced initial lung injury in mice.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Farmacología
/
Fibrosis Pulmonar
/
Silicosis
/
Ensayo de Inmunoadsorción Enzimática
/
Líquido del Lavado Bronquioalveolar
/
Extractos Vegetales
/
Química
/
Administración Oral
/
Dióxido de Silicio
/
Exposición por Inhalación
Tipo de estudio:
Estudio pronóstico
Límite:
Animales
Idioma:
Inglés
Revista:
Biomedical and Environmental Sciences
Año:
2002
Tipo del documento:
Artículo
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