ObjectiveTo assess the efficacy of low-dose intravenous cyclophosphmide (IV CTX) in treatmerit of old patients with systemic lupus erythematosus(SLE).MethodsTwenty-three old patients with newly diagnosed, untreated SLE were included.Patients received 3 times fortnightly IV CTX pulses at a fixed dose of 400mg followed by 3 monthly pulses.All patients were orally administered 0.8mg/kg of prednisone.The changes of the indexes were observed before and after 12 weeks treatment including the scores of SLE disease activity index(SLEDAI) and the levels of C3, C4 ,24-hour urinary protein and anti-dsDNA antibody.ResultsAmong 23 patients, 19 were followed up to 24 weeks, SLEDAI 4 weeks after treatment were all significantly lower than those before the treatment (P ＜0.01).At week 8, SLEDAI continued to decrease(P ＜0.05).At week 4,the level of urine protein, the levels of complements C3 and C4 and ds-DNA decreased significantly compared with that before the treatment (P ＜0.05).ConclusionIntensive low-dose CTX plus prednisone was effective in newly diagnosed, untreated old patients with SLE, and could reduce adverse effect.

This study examines the effect of isovolemic hemodilution on cerebral ischemia of thromboembolism for 24 hours in 71 Wistar rats. The rats were randomly divided into a hemodilution and a control group. At the end of 2 hr hemodilution, the hematocrit was reduced from 49.4?3.5% to 39.3?3.7% (n=43)。The rCBF of the embolized hemisphere increased by 10.95 (n=16, P