No abstract

In biopsies from normal-looking skin, immune complexes in the dermo-epidermal junction zone were found by a direct immunofluorescence technique in 14 of 17 patients with systemic lupus erythematosus, in 6 of 12 patients with rheumatoid arthritis, but in none of 10 patients with temporal arteritis and 25 normal controls. Blood samples were obtained simultaneously from all patients and high titres of IgG organ-nonspecific antinuclear factors with complement-fixing properties were found to be closely related to systemic lupus erythematosus. IgG granulocyte-specific antinuclear factors were related with rheumatoid arthritis, while high concentrations of plasma fibrinogen were characteristic of temporal arteritis. No significant increases or differences in blood values of alpha2-macroglobulin were found between the groups and no correlation was found with deposits in the skin.

The present paper is a description of 148 patients with circulating antinuclear antibodies and multisystemic disease filed during 18 years by one of the authors and followed up to date in 1981-83. Seventy-eight per cent of the patients satisfied the 1971 ARA criteria for the classification of systemic lupus erythematosus and 92 per cent fulfilled the 1982 ARA criteria. Eighty-five per cent were women, the mean age at onset of SLE was 32 years. Malar rash and arthritis were early manifestations in 80 per cent of the patients whereas the onset of nephropathy, CNS manifestations, serositis, and peripheral cytopenia was delayed in about half of the patients. Nephropathy and thrombocytopenia were observed particularly in the youngest patients. The mean duration of the observation period was 8 years. The 10-year-survival was 80 per cent. Half of the deaths were presumably unrelated to SLE. The mean ages at entry of patients who died of SLE and of unrelated causes were 30 and 52 years respectively. Eighteen per cent of the deaths were caused by uremia and 18 per cent by infections. The total and the SLE related mortalities were evenly distributed throughout the observation period. The morbidity (incidence of new ARA criteria and other findings indicating active disease) decreased during the first year of observation but rarely subsided completely during the following years. All patients observed for more than 10 years showed evidence of active disease during the rest of the observation period and most showed evidence of renal disease.

ABSTRACT. The course of the renal function and mortality were analysed in 395 patients with biopsy‐proven glomerulonephritis (GN), using Cox's proportional hazards model. Seventeen clinical, biochemical and histopathological parameters were analysed for prognostic information. The patients were grouped according to their serum creatinine levels. Increase in serum creatinine, decrease in serum creatinine, cure and death were used as endpoints for the analysis. Caplan Meyer curves were made for 7 transitions between different groups and the variables were reduced by a step‐wise procedure to a final model. Thirteen of the variables considered offered significant prognostic information (p<0.05) for at least one of the transitions. Short duration of disease, young age, non‐nephritic urinary sediment and preceding streptococcal infection were predictors of cure. Extracapillary, membranoproliferative and unclassifiable GN, old age and arterial hypertension predicted increase in serum creatinine in patients with low serum creatinine, while male sex, short duration of disease and pathological electrocardiogram favoured a further increase in patients with high serum creatinine. A later decrease in serum creatinine was signified by a preceding streptococcal infection, short duration of disease, absence of arterial hypertension and low urinary protein excretion. Death without uremia was predicted by high age, connective tissue disease and extracapillary GN. Using these parameters and the models, it is possible to make a prognostic forecast for the individual GN patient. Examples of such a forecast are described.