title: Clinico-pathophysiological features of acute autonomic and sensory neuropathy: a long-term follow-up study.
abstract: We evaluated the clinico-pathophysiological features of three patients with acute autonomic and sensory neuropathy (AASN) who were followed for over 3 years. Signs of an autonomic disturbance including vomiting, anhidrosis, urinary disturbances, orthostatic hypotension and reduced coefficient of variation of the R-R interval on electrocardiography gradually improved about 1 year after onset. However, all three exhibited severe generalized sensory impairment for all modalities with the development of persistent sensory ataxia. No sensory nerve action potentials could be elicited and no somatosensory evoked potentials could be obtained. Sural nerve biopsy revealed severe axonopathy. In two patients, a high-intensity area was observed in the posterior column of the spinal cord on T2*-weighted axial magnetic resonance images. The level of neuron-specific enolase in cerebrospinal fluid was markedly elevated in two patients, indicating spinal nerve root or sensory neuron damage. Motor nerve function was well preserved in all patients. Our findings suggests that the major lesion in patients with AASN, particularly those with a sensory deficit, is present in the dorsal root ganglion neurons, that is there is a ganglioneuronopathy.
authors.affiliation: Department of Neurology, Nagoya Daini Red Cross Hospital, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Yasuda
authors.forename: G
authors.initials: G
authors.lastname: Sobue
authors.forename: K
authors.initials: K
authors.lastname: Mokuno
authors.forename: S
authors.initials: S
authors.lastname: Hakusui
authors.forename: T
authors.initials: T
authors.lastname: Ito
authors.forename: Y
authors.initials: Y
authors.lastname: Hirose
authors.forename: T
authors.initials: T
authors.lastname: Yanagi
mesh_terms: D000200:Action Potentials / Q000502:physiology; D000328:Adult; D000368:Aged; D001342:Autonomic Nervous System Diseases / Q000175:diagnosis / Q000503:physiopathology*; D001706:Biopsy; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008279:Magnetic Resonance Imaging; D009414:Nerve Growth Factors; D010751:Phosphopyruvate Hydratase / Q000134:cerebrospinal fluid*; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins / Q000134:cerebrospinal fluid*; D012678:Sensation Disorders / Q000175:diagnosis / Q000503:physiopathology*; D013116:Spinal Cord / Q000473:pathology; D013497:Sural Nerve / Q000473:pathology*; D013577:Syndrome; D013997:Time Factors
chemical_list: D009414:Nerve Growth Factors; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins; D010751:Phosphopyruvate Hydratase