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Updated: Jul 27, 2026

The bm12 Inducible Model of Systemic Lupus Erythematosus (SLE) in C57BL/6 Mice
Published on: November 1, 2015
Systemic lupus erythematosus
1Postgraduate Division, School of Medicine, Universidad Nacional Autonoma de Mexico, Mexico City.
Pregnancy occurring in patients with diagnosed and controlled SLE will be associated with a flare of disease in 60 per cent of cases, which is not significantly different from flares in nonpregnant patients. Signs and symptoms of active SLE should be carefully evaluated and treated with steroids according to severity and organ systems involved. When pregnancy occurs with inactive kidney disease there is a 10 per cent rate of reactivation and SLE kidney disease may appear for the first time during pregnancy in 6.8 per cent of patients. These rates are similar in the control group. There will be a significantly increased abortion rate which cannot be improved with maternal treatment. There will also be a high prematurity rate and an increased number of newborns with intrauterine malnutrition that are associated with active maternal disease. The following points are important when caring for a pregnant SLE patient: 1. Maintain maternal disease inactive throughout gestation. 2. Monitor growth and development of fetus. 3. Monitor for fetal distress. 4. Interrupt pregnancy when fetal distress is diagnosed. 5. A neonatal intensive care unit should be available at the time of delivery. The short-term prognosis is good with no maternal mortality and there is no long-term deleterious influence of pregnancy on the evolution of SLE.
Pregnancy occurring in patients with diagnosed and controlled SLE will be associated with a flare of disease in 60 per cent of cases, which is not significantly different from flares in nonpregnant patients. Signs and symptoms of active SLE should be carefully evaluated and treated with steroids according to severity and organ systems involved. When pregnancy occurs with inactive kidney disease there is a 10 per cent rate of reactivation and SLE kidney disease may appear for the first time during pregnancy in 6.8 per cent of patients. These rates are similar in the control group. There will be a significantly increased abortion rate which cannot be improved with maternal treatment. There will also be a high prematurity rate and an increased number of newborns with intrauterine malnutrition that are associated with active maternal disease. The following points are important when caring for a pregnant SLE patient: 1. Maintain maternal disease inactive throughout gestation. 2. Monitor growth and development of fetus. 3. Monitor for fetal distress. 4. Interrupt pregnancy when fetal distress is diagnosed. 5. A neonatal intensive care unit should be available at the time of delivery. The short-term prognosis is good with no maternal mortality and there is no long-term deleterious influence of pregnancy on the evolution of SLE.
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