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hljmmj銀蟲 (小有名氣)
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[求助]
幫忙翻譯摘要7行,萬分感謝
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Key results: Pre-incubation of neutrophils with montelukast resulted in dose-related inhibition of the generation of reactive oxygen species and leukotriene B4 by chemoattractant-activated neutrophils, as well as release of elastase, all of which were maximal at 2 mmol·L-1 (mean percentages of the control values of 30 1, 12 3 and 21 3 respectively; P < 0.05). From a mechanistic perspective, treatment of chemoattractant-activated neutrophils with montelukast resulted in significant reduc- tions in both post-peak cytosolic Ca2+ concentrations and store-operated Ca2+ influx. These montelukast-mediated alterations in Ca2+ handling by the cells were associated with a significant elevation in basal cAMP levels, which resulted from inhibition of cyclic nucleotide phosphodiesterases. Conclusions and implications: Montelukast, primarily a cysteinyl leukotriene (CysLT1) receptor antagonist, exhibited previously undocumented, secondary, neutrophil-directed anti-inflammatory properties, which appeared to be cAMP-dependent. |
至尊木蟲 (著名寫手)
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主要結果:將中性粒細胞與孟魯司特預培養(yǎng)導致劑量相關地抑制化學趨化劑激活中性粒細胞活性氧簇和白三烯B4的產(chǎn)生及彈性蛋白酶的釋放,所有值均在2 mmol·L-1達高峰(對照值的平均百分率分別為 30.1, 12.3 和 21.3; P < 0.05)。從機理上看,化學趨化劑激活的中性粒細胞經(jīng)孟魯斯特處理導致峰后細胞質鈣離子濃度和鈣池調控鈣離子內流均顯著減少。這些由孟魯司特介導的細胞對鈣離子處理能力的改變與環(huán)核苷酸磷酸二酯酶抑制引起cAMP基礎水平顯著升高有關。 結論及含意:首先,孟魯司特作為半胱氨酰白三烯 (CysLT1)受體拮抗劑先前未有報道,其次,對中性粒細胞的抗炎癥特性表現(xiàn)為 cAMP依賴性。 |
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