Abstract

目的 观察血浆氨基酸递质的测定对于推测老年人脑缺血的严重程度具有临床意义.方法应用高效液相色谱法(HPLC)测定了57例老年人缺血性脑血管病患者和33名正常老年人对照血浆中兴奋性和抑制性氨基酸递质.结果在脑缺血急性期,血浆谷氨酸、天冬氨酸水平明显升高,与对照组相比分别升高了26.48% 和39.70%,缺血发生24 h后开始上升,恢复期降至正常水平.血浆抑制性氨基酸γ-氨基丁酸、甘氨酸、丙氨酸在脑缺血急性期也升高,与对照组相比分别升高了74.57%、36.79% 和21.33%.γ-氨基丁酸在恢复期下降,而甘氨酸、丙氨酸未见下降.结论急性缺血性脑血管病患者血浆氨基酸递质可早期反映老年人脑缺血发生,推测老年人脑缺血的严重程度。

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