Paclitaxel and vinorelbine, evoked the release of substance P from cultured rat dorsal root ganglion cells through different PKC isoform-sensitive ion channels
Use this link to cite this item : https://ir.lib.hiroshima-u.ac.jp/00027758
ID | 27758 |
file | |
creator |
Miyano, Kanako
Tang, He-Bin
Nakamura, Yoki
Inoue, Atsuko
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subject | DRG cells
Paclitaxel
PKC
sP
Vinorelbine
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NDC |
Medical sciences
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abstract | Many patients suffer from serious adverse effects including respiratory distress and pulmonary edema during and after chemotherapy with paclitaxel or vinorelbine. These effects appear to be due to the activation of neurokinin-1 receptors. The present study investigated the influences of paclitaxel and vinorelbine on the substance P (sP) release from cultured dorsal root ganglion (DRG) cells using a radioimmunoassay. Both paclitaxel and vinorelbine evoked sP release in a dose- and time-dependent manner within 60 min at a concentration range of 0.1-10 mu M. The sP release levels induced by the two drugs were attenuated by pretreatment with the protein kinase Cs (PKCs) inhibitors (bisindolyimaieimide I and Go6976). Moreover, the paclitaxel- or vinorelbine-induced sP release was diminished in the absence of extracellular Ca2+ or the presence of LaCl3 (an extracellular Ca2+ influx blocker). A Ca2+ imaging assay further indicated that both paclitaxel and vinorelbine gradually increased the intracellular Ca2+ concentration, and these increases lasted for at least 15 min and were suppressed by Go6976. Paclitaxel caused the membrane translocation of only PKC beta within 10 min after stimulation, whereas vinorelbine induced the translocation of both PKC alpha and beta. The paclitaxel- and vinorelbine-induced sP release levels were separately inhibited by ruthenium red (a transient receptor potential (TRP) channel blocker) and gabapentin (an inhibitor of voltage-gated Ca2+ channels (VGCCs)). These findings suggest that paclitaxel and vinorelbine evoke the sP release from cultured DRG cells by the extracellular Ca2+ influx through TRP channels activated by PKC beta and VGCCs activated by both PKC alpha and beta, respectively.
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journal title |
Neuropharmacology
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volume | Volume 57
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issue | Issue 1
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start page | 25
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end page | 32
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date of issued | 2009
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publisher | Pergamon-Elsevier Science Ltd
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issn | 0028-3908
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ncid | |
publisher doi | |
language |
eng
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nii type |
Journal Article
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HU type |
Journal Articles
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DCMI type | text
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format | application/pdf
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text version | author
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rights | Copyright (c) 2009 Elsevier Ltd
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relation url | |
department |
Graduate School of Biomedical Science
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