title: A longitudinal study of circulating lymphocyte subsets in the peripheral blood during the acute stage of Guillain-Barré syndrome.
abstract: Activated T cells are implicated in the pathogenesis of Guillain-Barré syndrome (GBS). Blood samples from 16 patients with GBS were studied with flow cytometry during the acute stage of their disease to define circulating lymphocyte populations. During the progressive phase of GBS the T-suppressor/inducer (CD4/CD45RA) subset was decreased (10.3 +/- 4.4%, P < 0.05) and the T-helper/ inducer (CD4/CD29) subset was increased (34.9 +/- 9.2%, P < 0.05) compared to sex and age matched patients with other neurological diseases (OND, 15.5 +/- 5.7% and 27.8 +/- 8.6%, respectively) and healthy controls (16.5 +/- 6% and 28.1 +/- 8.5%, resp.). Within the CD8 population, the activated T-cytotoxic/suppressor (CD8/CD38) subset was increased during the progressive (13 +/- 10.1%, P < 0.05) and plateau phase (16.4 +/- 16.9%, P < 0.01) of GBS compared to OND patients (6.2 +/- 2.3%) and healthy controls (5.8 +/- 2.5%). The proportion of activated T cells (CD3/CD25) was increased during the progressive (9.3 +/- 3.8%, P < 0.05) and plateau phase (11.5 +/- 5.5%, P < 0.01) compared to OND patients (6.6 +/- 2.7%) and healthy controls (5.5 +/- 2.5%). The changes of T cell subsets normalized during the early recovery phase of GBS. 2 patients with serological evidence of antecedent cytomegalovirus (CMV) infection had abnormal high proportions (mean +/- 2 (SD) of healthy controls) of CD8 lymphocytes and correspondingly abnormal low proportions of CD4 lymphocytes during all phases of GBS. In contrast, the CD8 proportions were abnormal low in 3 patients with serological evidence of recent Campylobacter jejuni infection. There was no correlation between the proportions of lymphocyte subsets and the disability score during the maximum of the disease and after half a year. In conclusion, we found further evidence of T cell activation during the acute stage of GBS by the demonstration of an increased proportion of activated CD8+ T cells, which may be directly cytotoxic to Schwann cells. The abnormalities of the CD8 subset in some GBS patients seem to depend on the nature of the preceding infection.
authors.affiliation: Department of Neurology, BG Kliniken Bergmannsheil, Ruhr-University, Bochum, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Sindern
authors.forename: C
authors.initials: C
authors.lastname: Oreja-Guevara
authors.forename: M
authors.initials: M
authors.lastname: Raulf-Heimsoth
authors.forename: X
authors.initials: X
authors.lastname: Baur
authors.forename: J P
authors.initials: JP
authors.lastname: Malin
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D005260:Female; D005434:Flow Cytometry; D006801:Humans; D008137:Longitudinal Studies; D016131:Lymphocyte Subsets / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D011129:Polyradiculoneuropathy / Q000276:immunology*; D011379:Prognosis