Selective reduction of [125I]apamin binding sites in Alzheimer hippocampus: a quantitative autoradiographic study.

作者: Masayuki Ikeda , Deborah Dewar , James McCulloch

DOI: 10.1016/0006-8993(91)91434-3

关键词:

摘要: Abstract [125I]Apamin binding sites were examined using quantitative autoradiography in the hippocampus of 9 patients with Alzheimer's disease and 8 age-matched controls. Within hippocampal formation from control subjects, [125I]apamin highly concentrated subiculum CA1. In there was a marked discrete loss 4control= 1.10 ± 0.10pmol/g; Alzheimer= 0.71 0.09pmol/g) CA1 (control= 1.41 0.09pmol/g; 0.85 0.11pmol/g; values are mean±S.E.M.). This reduction correlated cell density but not neuritic plaque density. These results indicate that an anatomically Ca2+-dependent K+ channels within occurs disease.

参考文章(29)
P. W. Landfield, Calcium Homeostasis in Brain Aging and Alzheimer’s Disease Diagnosis and Treatment of Senile Dementia. pp. 276- 287 ,(1989) , 10.1007/978-3-642-46658-8_21
M Hugues, D Duval, P Kitabgi, M Lazdunski, J P Vincent, Preparation of a pure monoiodo derivative of the bee venom neurotoxin apamin and its binding properties to rat brain synaptosomes. Journal of Biological Chemistry. ,vol. 257, pp. 2762- 2769 ,(1982) , 10.1016/S0021-9258(19)81028-1
M J Seagar, C Granier, F Couraud, Interactions of the neurotoxin apamin with a Ca2+-activated K+ channel in primary neuronal cultures. Journal of Biological Chemistry. ,vol. 259, pp. 1491- 1495 ,(1984) , 10.1016/S0021-9258(17)43434-X
J B Penney, W F Maragos, J T Greenamyre, D L Debowey, Z Hollingsworth, A B Young, Excitatory amino acid binding sites in the hippocampal region of Alzheimer's disease and other dementias. Journal of Neurology, Neurosurgery, and Psychiatry. ,vol. 53, pp. 314- 320 ,(1990) , 10.1136/JNNP.53.4.314
M. Hugues, G. Romey, D. Duval, J. P. Vincent, M. Lazdunski, Apamin as a selective blocker of the calcium-dependent potassium channel in neuroblastoma cells: voltage-clamp and biochemical characterization of the toxin receptor Proceedings of the National Academy of Sciences of the United States of America. ,vol. 79, pp. 1308- 1312 ,(1982) , 10.1073/PNAS.79.4.1308
Smajo S. Osmanovic´, Sarah A. Shefner, Mark S. Brodie, Functional significance of the apamin-sensitive conductance in rat locus coeruleus neurons Brain Research. ,vol. 530, pp. 283- 289 ,(1990) , 10.1016/0006-8993(90)91296-S
E. Habermann, Bee and Wasp Venoms Science. ,vol. 177, pp. 314- 322 ,(1972) , 10.1126/SCIENCE.177.4046.314
D.C. Davies, A.C. Wilmott, D.M.A. Mann, Senile plaques are concentrated in the subicular region of the hippocampal formation in Alzheimer's disease. Neuroscience Letters. ,vol. 94, pp. 228- 233 ,(1988) , 10.1016/0304-3940(88)90300-X