Antiamphiphysin antibodies with small-cell lung carcinoma and paraneoplastic encephalomyelitis

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Abstract

Paraneoplastic encephalomyelitis developed as the presenting feature of small-cell lung carcinoma in 3 patients. Two patients with paraneoplastic encephalomyelitis manifested predominantly as subacute sensory neuronopathy did not improve after prednisone treatment and chemotherapy. The third patient had severe axial and limb rigidity and myoclonus, which partially improved after chemotherapy and treatment with intravenous immunoglobulin and prednisone. Serum from each patient immunocytochemically stained the neuropil and to a lesser degree the neuronal cytoplasm in human cerebral and cerebellar cortex. On immunoblots of human neuronal extracts, each patient's serum contained high-titer IgG antibodies reacting with a protein band of apparent molecular mass 125 kd. This autoantibody pattern is indistinguishable from antibodies recently identified in several women with breast carcinoma and stiff-man syndrome. Screening of a human brain complementary DNA expression library with patient serum yielded clones whose sequence is identical to that of the synaptic vesicle-related protein amphiphysin. Reverse transcriptase-polymerase chain reaction demonstrated expression of amphiphysin in 8 of 10 small-cell lung carcinomas and in 5 of 14 breast carcinomas. These observations highlight the clinical and serological heterogeneity of paraneoplastic central nervous system disorders: Patients with a given clinical syndrome may have different antineuronal antibodies, and patients with a given autoantibody specificity have differing clinical presentations.

Original languageEnglish
Pages (from-to)659-667
Number of pages9
JournalAnnals of Neurology
Volume39
Issue number5
DOIs
StatePublished - May 1996

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Nervous System Paraneoplastic Syndromes
Small Cell Lung Carcinoma
Antibodies
Prednisone
Autoantibodies
Serum
Stiff-Person Syndrome
Breast Neoplasms
Drug Therapy
Cerebellar Cortex
Myoclonus
Neuropil
Synaptic Vesicles
Intravenous Immunoglobulins
Central Nervous System Diseases
Reverse Transcriptase Polymerase Chain Reaction
Gene Library
Cerebral Cortex
Cytoplasm
Proteins

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Antiamphiphysin antibodies with small-cell lung carcinoma and paraneoplastic encephalomyelitis. / Dropcho, Edward.

In: Annals of Neurology, Vol. 39, No. 5, 05.1996, p. 659-667.

Research output: Contribution to journalArticle

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