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W Liedtke

Publications and source records attributed to W Liedtke.

25 records · Page 2Linked to original sources

Immunological abnormalities in the tears of multiple sclerosis patients.

IgG and IgM concentrations in tears of multiple sclerosis patients (n = 38) are increased compared to normal controls (n = 23). The occurrence of oligoclonal tear IgG bands (7.9%)--as determined by immunoblotting--did not differ between groups. Our findings suggest an altered reactivity of the secretory immune system in MS patients, but did not differ from findings in patients with eye affections or wearing hard contact lenses.

Adult↗

Very-late-onset adrenoleukodystrophy: possible precipitation of demyelination by cerebral contusion.

We report the clinical history, neuroradiology, and autopsy findings in a patient with very late onset, at age 57, of adrenoleukodystrophy (ALD) presenting with dementia, hemianopia, and gait apraxia. Open brain biopsy, elevated plasma very-long-chain fatty acids, and autopsy confirmed the diagnosis of ALD. Demyelinative lesions were most extensive at the site of a recent cerebral contusion. CNS trauma may have precipitated or accelerated demyelination in this patient carrying the ALD gene.

Adrenoleukodystrophy↗

Prevalence of antibodies to rotavirus in different age-groups of infants in Bochum, West Germany.

We studied the prevalence of antibody to rotavirus in 386 serum samples obtained from different age-groups of infants in Bochum, West Germany. Cord sera mirrored the IgG titer and serotype specificity of the corresponding maternal sera. IgG antibody prevalence decreased with age, reached a minimum between four and 12 months, and increased thereafter. IgM antibodies appeared first in the eight- to 12-month age-group, and IgM prevalence remained high thereafter. The serum level of IgA was low in all age-groups. Significant prevalence increases with increasing age were observed for neutralizing antibodies to rotavirus serotypes 1 and 3. Antibodies to serotype 4 had not reached adult level at 2.5 y of age. Prevalence of antibodies to serotype 2 was low in all age-groups. The percentage of monospecific sera neutralizing only one serotype was high in young infants eight to 12 months of age and decreased significantly with increasing age.

Adult↗

Seroconversion patterns to four human rotavirus serotypes in hospitalized infants with acute rotavirus gastroenteritis.

We studied rotavirus-specific antibodies in paired sera from 71 hospitalized infants with acute rotavirus gastroenteritis. Most of the infants were less than six months old. Infants with serological evidence of a secondary rotavirus infection were excluded. With an enzyme-linked immunosorbent assay, 46% of the 71 infants studied showed specific IgM in convalescent sera. Titers of specific IgG and IgA increased in 7% and 2% of the infants, respectively. The presence of specific IgM correlated positively with age and severity of clinical symptoms. With a neutralization test, 59% of the infants showed a seroconversion: 20% to a single serotype (7% to serotype 1, 7% to serotype 3, and 6% to serotype 4), 21% seroconverted to two serotypes (nearly exclusively to serotypes 1 and 3), and 18% seroconverted to three serotypes (exclusively to serotypes 1, 3, and 4). No infant seroconverted to serotype 2 or to the heterologous (bovine) serotype 6.

Age Factors↗

Development of a monoclonal antibody specific for serotype 3 rotavirus strains.

Monoclonal antibodies were prepared against serotype 3 simian rotavirus SA11. Antigenic analysis of 18 hybridoma cell lines secreting monoclonal antibodies by radioimmunoprecipitation and Western blot revealed that seven monoclonals were directed against the major inner capsid protein VP6, four against VP3, an outer capsid protein with hemagglutinating activity, and one against VP7, the main outer capsid protein of the virus. The specificity of six monoclonals could not be determined. One monoclonal (1P14E2) directed against VP3 showed serotype 3-specific neutralizing activity. This monoclonal, which recognized only serotype 3 viruses in an enzyme-linked immunosorbent assay, could be useful in assays for serotyping rotavirus directly in stool samples.

Animals↗