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Acta Physiologica Sinica ; (6): 867-877, 2021.
Artigo em Chinês | WPRIM | ID: wpr-921290

RESUMO

The purpose of the present study was to investigate the effect of transient receptor potential vanilloid 4 (TRPV4) channel on the permeability of pulmonary microvascular endothelial cells (PMVECs) in rats with chronic hypoxia-induced pulmonary hypertension (CHPH), so as to clarify the mechanism of vascular endothelial dysfunction during the occurrence of pulmonary hypertension (PH). CHPH rat model was established by exposure to chronic hypoxia (CH) for 21 days. Primary PMVECs were cultured by adherent tissue blocks at the edge of the lung. The permeability coefficient of primary cultured PMVECs was detected by fluorescein isothiocyanate (FITC)-dextran. The structure of tight junction (TJ) was observed by transmission electron microscope. The expression of TRPV4 and TJ-related proteins, such as, Occludin, Claudin-5, ZO-1 were examined by real-time fluorescence quantitative PCR and Western blotting. The intracellular calcium concentration ([Ca


Assuntos
Animais , Ratos , Células Endoteliais , Hipertensão Pulmonar , Hipóxia/complicações , Pulmão , Permeabilidade , Canais de Cátion TRPV/genética
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