Expression of hypoxia-inducible factor-1 alpha and endothelin-1 gene in hypoxic pulmonary hypertension / 中华病理学杂志
Chinese Journal of Pathology
;
(12): 140-142, 2002.
Artigo
em Inglês
| WPRIM
| ID: wpr-255411
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the expression of hypoxia-inducible factor-1 alpha (HIF-1alpha) and endothelin-1 (ET-1) gene in hypoxic pulmonary hypertension (HPH).</p><p><b>METHODS</b>The animal model of HPH was replicated. The elastic fiber staining was applied to show the intraacinar pulmonary artery (IAPA). Radioimmunoassay (RIA) and in situ hybridization (ISH) were used for detection of HIF-1a and. ET-1.</p><p><b>RESULTS</b>ISH showed that HIF-1alpha mRNA was expressed in the IAPA of all hypoxic rat. The expression was stronger in the H14 d (0.256 9 +/- 0.046 8) and H28 d (0.225 8 +/- 0.045 3) groups than in the H5 d (0.1455 +/- 0.072 2) and control (0.110 9 +/- 0.022 4) groups (P < 0.05), the expression of ET-1 mRNA in the H14 d (0.412 2 +/- 0.078 3) and H28 d (0.368 4 +/- 0.072 9) groups was also stronger than that in the H5 d (0.201 7 +/- 0.034 9) and control (0.185 5 +/- 0.036 1) groups (P < 0.05). The amount of ET-1 in pulmonary arteial blood in the H14 d [(158.78 +/- 25.14) pg/ml] and H28 d [(142.93 +/- 23.38) pg/ml] groups was significantly higher than that in the H5 d [(79.68 +/- 12.54) pg/ml] and control [(65.37 +/- 10.82) pg/ml] groups (P < 0.05). The mean pulmonary arterial pressure (mPAP) in the H14 d [(34.0 +/- 5.8) mm Hg] and H 28 d [(29.0 +/- 4.7) mm Hg] groups was markedly higher than that in the H5 d [(19.0 +/- 3.5) mm Hg] and control [(17.0 +/- 2.8) mm Hg] groups (P < 0.05). A positive rank correlation existed between the mPAP and the amount of ET-1 (rs = 0.747, P < 0.05).</p><p><b>CONCLUSIONS</b>Expression of HIF-1alpha and ET-1 mRNA in IAPA increase under long-term hypoxic condition and both show consistent expression, indicating that the expression of HIF-1a and ET-1 gene contribute to pathogenesis of HPH.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Patologia
/
Fatores de Transcrição
/
RNA Mensageiro
/
Expressão Gênica
/
Ratos Wistar
/
Endotelina-1
/
Subunidade alfa do Fator 1 Induzível por Hipóxia
/
Genética
/
Hipertensão Pulmonar
/
Hipóxia
Tipo de estudo:
Estudo prognóstico
Limite:
Animais
Idioma:
Inglês
Revista:
Chinese Journal of Pathology
Ano de publicação:
2002
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS