Abstract
Background: Total glucosides of paeony (TGP), extracted from the dried roots of Paeonia lactiflora Pall., are proven to regulate immune function in various rheumatic diseases. We aim to systematically evaluate the efficacy and safety of TGP in reducing disease activity in systemic lupus erythematosus (SLE). Methods: We searched trials in seven electronic databases and two clinical trail registries. Randomized controlled trials (RCTs) evaluating efficacy and safety of TGP for SLE were identified. The Cochrane Risk of Bias Tool 2.0 was used for quality assessment of the included trials, and RevMan 5.4 software was used for meta-analysis. Results: A total of 14 RCTs were included, including 978 participants, 492 in the intervention group and 486 in the control group. Regarding the efficacy of TGP for SLE, results showed that TGP plus conventional treatments (CTs) was superior to CTs alone in reducing disease activity (MD SLEDAI-1m = −3.54, 95% CI = −4.08 to −3.00, p < 0.00001; MD SLEDAI-2m = −3.80, 95% CI = −4.51 to −3.09, p < 0.00001; MD SLEDAI-3m = −1.62, 95% CI = −2.60 to −0.64, p < 0.0001; MD SLEDAI-6m = −1.97, 95% CI = −3.18 to −0.76, p = 0.001). The results also showed that TGP contributed to a betterment in improving other outcomes related to lupus activity, such as ESR, CRP, complement proteins (C3, C4), and immunoglobulins (IgA, IgM). In addition, TGP significantly decreased average daily glucocorticoid dosage and cumulative cyclophosamide dosage, as well as disease recurrence rate. In terms of safety, TGP may reduce the incidence of adverse reactions (RR = 0.51, 95% CI = 0.29 to 0.88, p = 0.01). The certainty of the evidence were assessed as moderate to low. Conclusion: TGP appears potentially effective and generally safe in reducing disease activity in SLE. However, in view of high risk of bias, the findings need to be confirmed in high-quality trials. Systematic Review Registration: https://www.crd.york.ac.uk/prospero, identifier CRD42021274850
Highlights
Systemic lupus erythematosus (SLE, ICD10 Code: M32.9) is an autoimmune disorder progressively resulting in multi-system organ damage (Piga and Arnaud, 2021)
Moderate or low certainty evidence demonstrated that Total glucosides of paeony (TGP) had excellent efficacy on reducing lupus activity
All authors contributed to the article and approved the submitted version
Summary
Systemic lupus erythematosus (SLE, ICD10 Code: M32.9) is an autoimmune disorder progressively resulting in multi-system organ damage (Piga and Arnaud, 2021). A case-control study reported that 5.5% of patients exposed to antimalarial drugs developed antimalarial retinal complications over an average 12.8 years of follow-up (Mukwikwi et al, 2020). Emerging studies have suggested that the use of glucocorticoid in SLE contributed to some harmful outcomes (Apostolopoulos and Morand, 2016; Kasturi and Sammaritano, 2016). High cumulative corticosteroid dose and immunosuppressant use increased risk for avascular necrosis and herpes zoster (Hu et al, 2016; Chen et al, 2017; Kwon et al, 2018). There is still no optimal therapeutic scheme defined to safely control disease activity and reduce the total costs (Jönsen et al, 2015). We aim to systematically evaluate the efficacy and safety of TGP in reducing disease activity in systemic lupus erythematosus (SLE)
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