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采用Ｌ－型电压启动的Ｃａ２＋通道阻断剂，研究激活的培养腮腺腺细胞ｃａ＋代谢途径。结果显示：β－肾上腺素能受体激活后，α－淀粉酶、富含脯氨酸蛋白（ＰＲＰ）表达升高，但不受Ｌ－型电压启动的ｃａ２＋通道阻断剂影响。研究表明，培养的腮腺腺细胞保留了β－肾上腺素能全体，具备分泌调节功能，激活的腮腺腺细胞细胞外Ｃａ２＋流入并非通过Ｌ－型电压启动的Ｃａ２＋通道。
L-type voltage-activated Ca2 + channel blockers were used to study ca + metabolic pathways in activated parotid gland cells. The results showed that the expression of α-amylase and proline-rich protein (PRP) increased after β-adrenergic receptor activation, but was not affected by L-type voltage-activated ca2 + channel blockers. Studies have shown that cultured parotid gland cells retain beta-adrenergic energy and possess secretory regulatory functions that activate extracellular Ca2 + influx in parotid gland cells rather than Ca2 + channels activated by L-type voltage.