Preferential recruitment of ataxin-3 independent of expanded polyglutamine: an immunohistochemical study on Marinesco bodies. Issue 4 (1st October 2001)

• Record Type: Journal Article
• Authors: Fujigasaki, H; Uchihara, T; Takahashi, J; Matsushita, H; Nakamura, A; Koyano, S; Iwabuchi, K; Hirai, S; Mizusawa, H
• Is Part Of: Journal of neurology, neurosurgery and psychiatry. Volume 71:Issue 4(2001)
• Page Start: 518
• Page End: 520
• Publication Date: 2001-10-01
• Subjects: ubiquitin -- hepatic encephalopathy -- neuronal intranuclear inclusion; Neurology -- Periodicals; Nervous system -- Surgery -- Periodicals; Psychiatry -- Periodicals; 616.8
• DOI: 10.1136/jnnp.71.4.518
• Languages: English
• ISSNs: 0022-3050

Abstract

Abstract : In an immunohistochemical study of Marinesco bodies—a neuronal intranuclear inclusion often seen in neurons of the substantia nigra of patients with hepatic encephalopathy—it was shown that one of the polyglutamine proteins, ataxin-3, is preferentially recruited into this inclusion, whereas other polyglutamine proteins (ataxin-2 and TATA box-binding protein) are not. This suggests that recruitment of each of the polyglutamine proteins may be differently regulated. Because this nuclear inclusion is thought to be formed in response to cellular stress, as occurs in hepatic encephalopathy, even in the absence of an expanded CAG/polyglutamine repeat, recruitment of ataxin-3 and ubiquitin into Marinesco bodies may represent a cellular response to noxious external stimuli unrelated to expanded CAG/polyglutamine.