EFFECT OF THE TOTAL SAPONIN OF DIPSACUS ASPER ON INTRACELLULAR FREE CALCIUM CONCENTRATION IN THE CELLULAR MODEL OF ALZHEIMER‘S DISEASE-SCANNING CONFOCAL MICROSCOPY

ＡｌｔｈｏｕｇｈｔｈｅＡｌｚｈｅｉｍｅｒ’ｓｄｉｓｅａｓｅ(ＡＤ)ｗａｓｄｉｓ ｃｏｖｅｒｅｄｂｙＡｌｏｉｓＡｌｚｈｅｉｍｅｒ ,ａＧｅｒｍａｎｎｅｕｒｏｐａｔｈｏｌｏ ｇｉｓｔ,ｉｎｅａｒｌｙ 2 0ｃｅｎｔｕｒｙ ,ｉｔｄｉｄｎｏｔｇａｉｎｍｕｃｈｐｕｂｌｉｃａｔｔｅｎｔｉｏｎｕｎｔｉｌｔｈｅｌａｓｔｔｗｏｄｅｃａｄｅｓ .Ａｓｔｈｅｌｉｆｅｓｐａｎｏｆｈｕｍａｎｂｅｉｎｇｓｐｒｏｌｏｎｇｓ ,ｔｈｅｎｕｍｂｅｒｏｆｐｅｒｓｏｎｓｗｉｔｈＡＤｈａｓａｌｓｏｉｎｃｒｅａｓｅｄ .Ｂｅｓｉｄｅｓｃａｎｃｅｒａｎｄ…

EFFECT OF THE TOTAL SAPONIN OF DIPSACUS ASPER ON INTRACELLULAR FREE CALCIUM CONCENTRATION IN THE CELLULAR MODEL OF ALZHEIMER'S DISEASE-SCANNING CONFOCAL MICROSCOPY

Objective To study the effect of ginsenoside Rb1(Rb1) and total saponin of dipsacus asper(tSDA) on intracellular free calcium concentration(Ca2+]i) mediated by β-amyloid protein(A β).So as to lay a foundation for developing effective Chinese traditional medicine to treat Alzheimer's disease(AD).Methods The technique of laser scanning confocal microscopy combining primary cultured neurons was adopted to quantitatively analyze the change of Ca2+]i.Results The Ca2+]i of primary cultured hippocampal neurons was (185.76±56.22)nmol*L-1 on basal levels.Control group showed obvious change of calcium vibration,Ca2+]i was elevated to (1383.78±62.83)nmol*L-1.The peak of Ca2+]i of Rb1 group reached (311.95±32.67)nmol*L-1 and was lower than that of control group (P＜0.01).The tSDA group displayed distinct change of calcium vibration too,and Ca2+]i reached (358.01±35.42)nmol*L-1.There was a significant difference in Ca2+]i between control and tSDA group (P＜0.01).Conclusion The research indicated that one of mechanisms by which Rb1 and tSDA protected the neurons was to maintain the balance of Ca2+]i.