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Lupus nephritis in males and females
Insights
Male lupus nephritis patients face worse outcomes, including lower survival and renal survival rates compared to females. This difference may be linked to a higher prevalence of slow acetylators in males with severe disease.
Area of Science:
- Nephrology
- Immunology
- Pharmacogenetics
Background:
- Systemic lupus erythematosus (SLE) can cause lupus nephritis, a severe kidney complication.
- Understanding gender-based differences in lupus nephritis is crucial for prognosis and treatment.
Purpose of the Study:
- To compare the clinical course and outcomes of lupus nephritis between male and female patients.
- To investigate the association between acetylation status and disease severity in lupus nephritis.
Main Methods:
- Retrospective comparison of lupus nephritis course in 51 males and 337 females.
- Analysis of clinical features including nephrotic syndrome, hypertension, and rapidly progressive lupus nephritis.
- Evaluation of 10-year overall and renal survival rates.
- Assessment of sulfadiazine acetylation rates in a subset of patients.
Main Results:
- Hypertension and rapidly progressive lupus nephritis were more frequent in males.
- 10-year overall survival was 41% in males vs. 60% in females.
- 10-year renal survival was 40% in males vs. 57% in females.
- Slow acetylator phenotype was more prevalent in males and those with severe lupus nephritis.
Conclusions:
- Male patients with lupus nephritis have a poorer prognosis than females.
- Gender-based disparities in lupus nephritis outcomes are significant.
- Acetylation status may play a role in disease severity and progression in lupus nephritis.
Abstract:
The course of lupus nephritis in 51 males was compared to that of 337 females. Nephrotic syndrome occurred with equal frequency in males and females, hypertension was more frequent in males, rapidly progressive lupus nephritis was much more frequent in males. The overall 10-year survival rate from the onset of systemic lupus erythematosus was 41 per cent in males and 60 per cent in females. The 10-year 'renal survival' - from the clinical evidence of renal disease to 'renal death' - was 40 per cent in males and 57 per cent in females. Thus the prognosis of lupus nephritis in males was worse than in females. In 10 males and 65 females acetylation rate of sulfadimezine was studied. The predominance of slow acetylators was especially marked in males and in patients with more severe disease.