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  • Book
    Roberto de Franchis, Alessandra Dell'Era, editors.
    Digital Access Springer 2014
  • Article
    Grennan DM, Moseley A, Sloane D, Pumphrey R, Dick WC, Buchanan WW.
    Aust N Z J Med. 1977 Dec;7(6):625-9.
    Serial measurements were made over a period of three years of serum DNA-binding capacity and complement C3 and C4 levels in parallel with documentation of clinical features of disease activity in Glasgow patients with SLE. Raised DNA-binding levels were noted in 27 of the 32 patients over this time period. High levels (over 80%) were found in patients with both renal and non-renal disease. In some patients increases in DNA-binding capacity and decreases in C3 levels were associated with changes in disease activity. This pattern was commonest in patients with renal SLE. In others DNA-binding capacity was elevated without any relationship to SLE disease activity. A fall in serum C3 levels was usually significant while serum C4 levels frequently fell without any change in clinical features of disease activity. Very low serum C4 levels (below 15 mg/dl), however, were usually of clinical relevance. The uses of immunological measurements in the differential diagnosis of a major illness in a patient with SLE are discussed. The finding of such an illness in a patient with normal serum DNA-binding levels made it unlikely that the illness was due to an exacerbation of the SLE and more likely that an alternative cause such as supervening bacteraemia was responsible.
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