產品概述
白細胞介素1(IL-1)家族分子包括IL-1α,IL-1β和IL-1受體拮抗劑。IL-1α和IL-1β結合到相同細胞表面受體因此擁有許多相同的生物學功能。除了皮膚角朊細胞,一些上皮細胞和中樞神經系統的某些細胞外,IL-1不會由健康個體的未受刺激的細胞產生。然而,當機體感受炎癥感染或微生物內毒素的刺激時,巨噬細胞和其他類型細胞能夠產生顯著增強的IL-1表達。IL-1具有一系列生物活性,在介導免疫和炎癥反應過程中起重要的作用。正常條件下IL-1的產生對于宿主受傷和感染的免疫反應是非常關鍵的,不恰當的延長IL-1的產生已經在多種病理條件下被發現了,包括膿毒病,類風濕性關節炎,腸炎,急性和慢性髓細胞性白血病,胰島素依賴型糖尿病,動脈粥樣硬化。
產品原理
本實驗采用雙抗體夾心ELISA法。抗大鼠IL-1β單抗包被于酶標板上,同時加入標本、標準品和生物素化的抗大鼠IL-1β抗體,標本、標準品中的IL-1β會與加入于孔中的生物素化的抗大鼠IL-1β抗體及包被于酶標板上的單抗結合,形成免疫復合物,游離的成分被洗去;加入辣根過氧化物酶標記的親合素,親合素與生物素特異性結合,游離的成分被洗去。加入顯色底物(顯色劑),若反應孔中有IL-1β,辣根過氧化物酶會使無色的顯色劑變藍,加終止液變黃。在450nm處測OD值, IL-1β濃度與OD450值之間呈正相關,可通過繪制標準曲線求出標本中IL-1β濃度。
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