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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 216 (1993), S. 39-51 
    ISSN: 0009-8981
    Keywords: Cerebrospinal fluid ; IgA ; IgM ; Isoelectric focusing ; Meningoencephalitis ; Neuroborreliosis
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of neurology 242 (1994), S. 26-36 
    ISSN: 1432-1459
    Keywords: Borrelia burgdorferi ; Antibody index ; Oligoclonal bands
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The cerebrospinal fluid (CSF) of 37 patients with early Lyme neuroborreliosis (ELN) and of 10 patients with late Lyme neuroborreliosis (LLN, duration of symptoms ≥ 7 months) was investigated for typical features differentiating between acute and chronic courses of disease. Individual patients were studied after 2 and 4 weeks, and 3, 6, and 12 months. Patients with ELN presented predominantly with symptoms of the peripheral nervous system, while patients with LLN generally suffered from symtoms of the central nervous system. At the first lumbar puncture, patients with ELN revealed a more intense pleocytosis in the CSF (P 〈 0.02) and a higher intrathecal synthesis of total IgM (P 〈 0.0003) and ofBorrelia burgdorferi-specific IgM antibodies (P 〈 0.01). At the same time, in patients with LLN, the blood-CSF barrier was more severely impaired (P = 0.03), and local production of total IgG (P = 0.0001), ofB. burgdorferi-specific IgG antibodies (P = 0.03) and of total IgA (P = 0.001) was more markedly increased. The quantity of intrathecally producedB. burgdorferi-specific IgA antibodies did not differ between the two study groups. Clinical recovery was usually accompanied by a considerable improvement of the blood-CSF barrier function and pleocytosis. After 6 months, the intrathecal synthesis of total IgG had significantly decreased in patients with ELN but not in those with LLN. At the same time, the CSF of most patients in both study groups still contained intrathecally producedB. burgdorferi-specific IgG antibodies. In the absence of clinical illness or symptoms of inflammation 6 and 12 months after treatment,B. burgdorferi-specific IgG antibodies in the CSF might simply indicate an anamnestic reaction to a previous infection of the central nervous system. Six months after antibiotic treatment, patients with ELN still revealed evidence of intrathecal synthesis of total IgM, whereas those with LLN did not. These antibodies, however, were not related toB. burgdorferi.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1459
    Keywords: AIDS ; Chronic encephalitis ; Viral persistence ; Cerebrospinal fluid ; Immunoblot technique
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Intrathecal antibody responses to HIV were investigated by a highly sensitive immunoblot assay. Serum and CSF specimens were tested for reactivity with the recombinant HIV gag proteins p15, p17 and p24 and with the recombinant transmembrane protein p41. Autochthonous production of virus-specific IgG to one or more HIV structural proteins was seen in 8 of 10 asymptomatic seropositive subjects, in 3 of 4 men with AIDS-related complex, and in 9 of 13 patients with AIDS. These results were consonant with an elevated CSF/serum antibody ratio to total HIV antigen. The high frequency of local HIV-specific antibody synthesis in seropositive individuals without related clinical symptoms indicates an early involvement of the CNS in HIV infections.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Infection 28 (2000), S. 78-84 
    ISSN: 1439-0973
    Keywords: Key words Tick-borne encephalitis ; Cerebrospinal fluid ; Antibody index
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Infection with the tick-borne encephalitis virus (TBEV) can result in various neurological complications. At present, there are little data available on laboratory findings that might help predict the clinical course and prognosis of tick-borne encephalitis (TBE). In the present study 100 patients with TBE were examined in respect to various laboratory parameters potentially characteristic for the disease and indicative for the prognosis in TBE. Pleocytosis, impairment of the blood-CSF barrier and intrathecal synthesis of immunoglobulins (IgM 〉 IgG, IgA) were common findings in most patients. On admission to the hospital, 84% of the patients presented with an intrathecal synthesis of TBEV-specific IgM and/or IgG antibodies in the CSF. At follow-up, intrathecal synthesis of TBEV-specific antibodies was demonstrated in all patients studied within 15 days after the first examination, but changes of CSF parameters did not correlate with the clinical course of disease. In contrast to those with moderate courses of disease, patients with severe courses of TBE displayed higher cell counts in the CSF and lower concentrations of neutralizing antibodies in serum, and more frequently revealed an intrathecal synthesis of total IgG. TBE-specific oligoclonal IgG antibodies in the CSF were demonstrated only in three patients with prior, incomplete, vaccination against TBE. The severe course of disease in individual patients with TBE may result from a slow or low production of neutralizing antibodies. In these patients, the more intense damage of the CNS tissue is reflected by higher cell counts in the CSF. At onset of disease the presence of a low concentration of neutralizing antibodies in serum and a high cell count in the CSF might indicate an unfavorable course of TBE.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical microbiology & infectious diseases 17 (1998), S. 159-166 
    ISSN: 1435-4373
    Keywords: Borrelia burgdorferi ; Recombinant proteins ; Enzyme immunoassay ; Antibody index
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The intrathecal synthesis of borrelial-specific IgM- and IgG-antibodies was studied in 67 patients with neuroborreliosis and in 14 patients with neurosyphilis (controls). Antibody concentrations in serum and in the cerebrospinal fluid were determined by an enzyme immunoassay (EIA) using, as antigens, a sonicate ofBorrelia burgdorferi, the recombinant 14 kDa flagellin fragment, the outer surface protein C (22 kDa), and the high molecular mass protein p83 (83 kDa). In the sonicate EIA, IgG- and/or IgM-antibodies toBorrelia burgdorferi in serum were detected in all patients with neuroborreliosis and in 71% of patients with neurosyphilis. Intrathecal synthesis of borrelial-specific IgG- and/or IgM-antibodies was demonstrated in 82% of patients with neuroborreliosis and in 71% of patients with neurosyphilis. Immunoglobulin G- and/or IgM-antibodies in serum against any of the recombinant antigens were detected in 92% of patients with neuroborreliosis and in none of those with neurosyphilis. Intrathecal synthesis of IgG- and/or IgM-antibodies to individual recombinant antigens was demonstrated in 67% of patients with neuroborreliosis and in none of those with neurosyphilis. The sensitivity of the recombinant antigens in serum was almost equal to that of the sonicate EIA, whereas the recombinant antigens were clearly less sensitive in the estimation of the intrathecal specific immune response. It was concluded that in suspected cases of neuroborreliosis, the estimation of high specific antibodies in the recombinant EIA will be helpful in confirming the diagnosis.
    Type of Medium: Electronic Resource
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