Paeoniflorin, the Main Active Ingredient of Shuyu Capsule, Inhibits Ca<sub>v</sub>1.2 and Regulates Calmodulin/Calmodulin-Dependent Protein Kinase II Signalling

<div>Intracellular calcium ion concentrations of primary culture of hippocampal neurons from groups including blank control, 50 <i>μ</i>M paeoniflorin treatment, 100 <i>μ</i>M paeoniflorin treatment, and 200 <i>μ</i>M paeoniflorin treatment. (a) Morphology and fluorescence intensity of hippocampal neurons in each group before and after KCl and paeoniflorin treatment. Pf: paeoniflorin treatment. (b) Fluorescence intensity of each group over time (0–191 s). (c) Statistical comparison of fluorescence intensity at 25 s and 150 s in each group (<span class="nowrap"><svg height="8.32035pt" id="M40" style="vertical-align:-0.2063999pt" version="1.1" viewbox="-0.0498162 -8.11395 27.8368 8.32035" width="27.8368pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M495 86L479 114C446 82 419 66 409 66C401 66 401 72 406 97C420 166 436 231 453 297C489 435 454 448 428 448C406 448 384 439 354 422C305 394 222 327 161 247H159L183 345C200 415 194 448 173 448C143 448 82 410 23 351L38 325C64 349 95 371 105 371C111 371 116 365 109 336L25 -4L31 -12C50 -4 77 3 107 9C119 69 132 122 145 168C197 254 321 381 370 381C387 381 393 374 378 305L329 95C309 17 320 -12 345 -12C372 -12 430 19 495 86Z" id="g113-111"></path></g><g transform="matrix(.013,0,0,-0.013,10.158,0)"><path d="M535 323V373H52V323H535ZM535 138V188H52V138H535Z" id="g117-34"></path></g><g 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Scale bar: 20 <i>μ</i>m.</div>

BioMed Research International

fig3

Figure 3

Figure 3: Paeoniflorin, the Main Active Ingredient of Shuyu Capsule, Inhibits Ca<sub>v</sub>1.2 and Regulates Calmodulin/Calmodulin-Dependent Protein Kinase II Signalling 

Figure 3 | Paeoniflorin, the Main Active Ingredient of Shuyu Capsule, Inhibits Cav1.2 and Regulates Calmodulin/Calmodulin-Dependent Protein Kinase II Signalling 