資料載入中.....
|
請使用永久網址來引用或連結此文件:
http://ir.cmu.edu.tw/ir/handle/310903500/30120
|
| 題名: | Leukemia inhibitory factor in follicular fluid is not related to the number and quality of embryos as well as implantation and pregnancy rates |
| 作者: | Hsieh, YY;Chang, CC;Tsai, HD;Lin, CS |
| 貢獻者: | 附設醫院婦產部;Natl Chiao Tung Univ, Dept Biol Sci & Technol, Hsinchu, Taiwan;China Med Coll Hosp, Dept Obstet & Gynecol, Taichung, Taiwan |
| 日期: | 2005 |
| 上傳時間: | 2010-09-24 14:49:37 (UTC+8) |
| 出版者: | SPRINGER/PLENUM PUBLISHERS |
| 摘要: | Rat neutrophils express the mRNA encoding for transient receptor potential (TRP) V1. However, capsaicin-stimulated [Ca2+](i) elevation occurred only at high concentrations (>= 100 mu M). This response was substantially decreased in a Ca2+-free medium. Vanilloids displayed similar patterns of Ca2+ response with the rank order of potency as follows: scutigeral > resiniferatoxin > capsazepine > capsaicin=olvanil > isovelleral. Arachidonyl dopamine (AAD), an endogenous ligand for TRPV1, failed to desensitize the subsequent capsaicin challenge. Capsaicin-induced Ca2+ response was not affected by 8-bromo-cyclic ADP-ribose (8-Br-cADPR), the ryanodine receptor blocker, but was slightly attenuated by 1-[6-[17 beta-3-methoxyestra-1,3,5(10)-trien-17-yl]amino]hexyl]-1H-pyrrole-2,5-dione (U-73122), the inhibitor of phospholipase C-coupled processes, 1-[beta-[3-(4-methoxyphenyl)propoxy]-4-methoxyphenethyl]-1H-imidazole (SKF-96365), the blocker of receptor-gated and store-operated Ca2+ (SOC) channels, 2-aminoethyldiphenyl borate (2-APB), the blocker of D-myo-inositol 1,4,5-trisphospahte (IP3) receptor and Ca2+ influx, and by ruthenium red, a blocker of TRPV channels, and enhanced by the Ca2+ channels blocker, cis-N-(2-phenylcyclopentyl)azacyclotridec-1-en-2-amine (MDL-12330A) and Na+-deprivation. In addition, capsaicin had no effect on the plasma membrane Ca2+-ATPase activity or the production of nitric oxide (NO) and reactive oxygen intenmediates (ROI) or on the total thiols content. Capsaicin (>= 100 mu M) inhibited the cyclopiazonic acid (CPA)-induced store-operated Ca2+ entry (SOCE). In the absence of external Ca2+ the robust Ca2+ entry after subsequent addition of Ca2+ was decreased by capsaicin in CPA-activated cells. capsaicin alone increased the actin cytoskeleton, and also increased the actin filament content in cell activation with CPA. These results indicate that capsaicin activates a TRPV1-independent non-SOCE pathway in neutrophils. The reorganization of the actin cytoskeleton is probably involved in the capsaicin inhibition of SOCE. (c) 2005 Elsevier Inc. All rights reserved. |
| 關聯: | BIOCHEMICAL GENETICS 43(9月10日):501-506 |
| 顯示於類別: | [台中附設醫院] 期刊論文
|
在CMUR中所有的資料項目都受到原著作權保護.
|
