Calcium-Sensing Receptor in Rat Pulmonary Artery Smooth Muscle Cells
Author Information
Author(s): Li Guang-wei, Wang Qiu-shi, Hao Jing-hui, Xing Wen-jing, Guo Jin, Li Hong-zhu, Bai Shu-zhi, Li Hong-xia, Zhang Wei-hua, Yang Bao-feng, Yang Guang-dong, Wu Ling-yun, Wang Rui, Xu Chang-qing
Primary Institution: Harbin Medical University
Hypothesis
The study investigates whether the calcium-sensing receptor (CaSR) is expressed in pulmonary artery smooth muscle cells (PASMCs) and its role in regulating pulmonary artery tension.
Conclusion
The calcium-sensing receptor is expressed in rat pulmonary artery smooth muscle cells and regulates pulmonary artery tension by increasing intracellular calcium through the G-PLC-IP3 pathway.
Supporting Evidence
- CaSR mRNA and protein were detected in rat pulmonary artery smooth muscle cells.
- Increased extracellular calcium levels induced a concentration-dependent increase in intracellular calcium.
- CaSR activation was shown to be involved in the regulation of pulmonary artery tension.
Takeaway
This study found that a special receptor in cells can help control how tight the blood vessels in the lungs are by managing calcium levels inside the cells.
Methodology
The study used RT-PCR, Western blotting, immunofluorescence, and tension studies on pulmonary artery rings to assess the expression and function of CaSR.
Participant Demographics
Adult male Wistar rats (200-250 g) were used for the experiments.
Statistical Information
P-Value
p<0.01
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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