Effect of L-arginine liposome on nitric oxide content and nitric oxide synthase gene expression in rats chronically exposed to hypoxia and hypercapnia / 中国应用生理学杂志
Chinese Journal of Applied Physiology
;
(6): 121-124, 2004.
Artículo
en Chino
| WPRIM
| ID: wpr-333698
ABSTRACT
<p><b>AIM</b>To investigate the effects of L-arginine liposome on nitric oxide(NO) and nitric oxide synthase gene (NOS mRNA) in rats chronically exposed to hypoxia-hypercapnia.</p><p><b>METHODS</b>Fourty male SD rats were randomly divided into four groups (n=10) normal control group(NC), hypoxia-hypercapnia group (HH), hypoxia-hypercapnia + L-arginine group(HL) and hypoxia-hypercapnia + L-arginine liposome group (HP). Contents of NO in plasma were measured using colorimetric analysis. Expression of nitric oxide synthase gene were measured with situ hybridization.</p><p><b>RESULTS</b>(1) The mean pulmonary artery pressure(mPAP) and weight ratio of right ventricle to left ventricle and septum(RV/LV + S) of HP group were obviously lower than those of HH group and HL group. (2) The NO contents in plasma of HP group were obviously higher than those of HH group and HL group (P < 0.01). (3) Situ hybridization showed the average value of integral light density(LD) of ecNOS mRNA in pulmonary arterioles was significantly higher in rats of HP group than that of HH group and HL group (P < 0.01). (4) Light microscopy showed WA/TA (vessel wall area/total area) and PAMT (media thickness ratio of pulmonary arterioles) were significantly lower in rats of HP group than those of HH group (P < 0.01).</p><p><b>CONCLUSION</b>L-arginine liposome could lower the mPAP and lighten the remodeling of pulmonary arterioles of the rats chronically exposed to hypoxia-hypercapnia than L-arginine does. It suggests that L-arginine liposome significantly promotes the membrane transportin of L-arginine.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Farmacología
/
Arginina
/
Expresión Génica
/
Ratas Sprague-Dawley
/
Óxido Nítrico Sintasa
/
Hipercapnia
/
Liposomas
/
Hipoxia
/
Metabolismo
/
Óxido Nítrico
Límite:
Animales
Idioma:
Chino
Revista:
Chinese Journal of Applied Physiology
Año:
2004
Tipo del documento:
Artículo
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