Intravital Förster resonance energy transfer imaging reveals elevated [Ca2+]i and enhanced sympathetic tone in femoral arteries of angiotensin II-infused hypertensive biosensor mice.
高血压中动脉狭窄只能源于动脉结构重塑或平滑肌收缩增强,后者可伴或不伴细胞内钙浓度([Ca2+]i)升高。本研究利用表达 Ca2+/calmodulin FRET 生物传感器的转基因小鼠,通过皮下持续输注血管紧张素 II(Ang II,400 ng kg−1 min−1,2–3 周)建立高血压模型,并在活体麻醉小鼠中用荧光显微镜同时测...