Presence of BACE1 and BACE2 in muscle fibres of patients with sporadic inclusion-body myositis

被引：40
|
作者：
Vattemi, G
Engel, WK
McFerrin, J
Buxbaum, JD
Pastorino, L
Askanas, V
机构：
[1] Univ So Calif, Keck Sch Med, Good Samaritan Hosp, Dept Neurol,USC Neuromuscular Ctr, Los Angeles, CA USA
[2] Mt Sinai Sch Med, Dept Psychiat, New York, NY USA
[3] Mt Sinai Sch Med, Dept Neurobiol, New York, NY USA
来源：
LANCET | 2001年 / 358卷 / 9297期
关键词：
D O I：
10.1016/S0140-6736(01)06969-0
中图分类号：
R5 [内科学];
学科分类号：
1002 ; 100201 ;
摘要：
Sporadic inclusion-body myositis (IBM) is the most common, progressive muscle disease of older Individuals. We Investigated the presence of BACE1 and BACE2-two beta secretases that cleave amyloid-beta -precursor protein-in muscle-biopsy samples from patients with IBM and from controls. On immunofluorescence, BACE1 and BACE2 co-localised with amyloid beta in IBM vacuolated muscle fibres, but were not found In controls. Immunoblotting showed Increased BACE2 but not BACE1 in patients with IBM compared with controls. Our study suggests that both of these proteases might participate In processing of amyloid-beta -precursor protein in IBM muscle fibres.
引用
收藏
页码：1962 / 1964
页数：3
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