PMID: 9542589May 30, 1998Paper

The fragmented neuronal Golgi apparatus in amyotrophic lateral sclerosis includes the trans-Golgi-network: functional implications

Acta Neuropathologica
A StieberN K Gonatas

Abstract

The Golgi apparatus (GA) of spinal cord motor neurons is fragmented in sporadic amyotrophic lateral sclerosis (ALS), and in asymptomatic and symptomatic transgenic mice expressing the G93A mutation of the gene of the human Cu,Zn superoxide dismutase, found in certain cases of familial ALS (FALS) [Gonatas NK (1994) Am J Pathol 145:751-761; Mourelatos Z, et al. (1996) Proc Natl Acad Sci USA 93:5472-5477]. A similar fragmentation of the GA has been described in cells treated with microtubule-depolymerizing drugs, where the organelle is functional and contains both Golgi stacks and trans-Golgi network (TGN), the compartment of exit and targeting of proteins processed by the GA. To gain a better definition of the structure of the fragmented neuronal GA in ALS, four cases of sporadic ALS with numerous Bunina bodies in spinal cord motor neurons were stained with antibodies against human TGN and against the lumenal and cytoplasmic domains of MG160, a protein of the medial cisternae of the GA. The fragmented GA was stained with the three antibodies, indicating the presence of both Golgi stacks and TGN. Furthermore, the staining of the fragmented GA by the antiserum against the cytoplasmic domain of MG160 indicates that the fragmentation...Continue Reading

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