Background: Recently, several systematic reviews (SRs) and meta-analyses (MAs) of Tripterygium wilfordii polyglycoside (TWP) have reported significant benefits on diabetic kidney disease (DKD). However, the adoption of TWP for DKD remains uncommon. This study aimed to evaluate and summarize the current evidence on TWP for DKD.
Methods: We searched PubMed, Web of Science, SINOMED, Embase, Cochrane Library, CNKI database, Wan Fang database, and VIP database, up to June 4, 2022. SRs of TWP on DKD were included. Two authors independently assessed eligibility, extracted data, and graded the quality of evidence. We appraised the reporting and methodological quality of the included studies based on the PRISMA statement and AMSTAR 2.
Results: We included 19 SRs and MAs. Seventeen MAs of proteinuria were identified; all suggested TWP exhibited anti-proteinuria function on DKD. Of these, only 2 were graded as moderate quality of evidence. Eighteen MAs estimated the reno-protective effect of TWP; nine of them showed that TWP improved renal function, including 2 MAs rated as moderate quality of evidence. Eleven SRs showed the serum albumin level was elevated in the TWP group. Of those, four were rated as moderate quality of evidence. Fourteen MAs of the incidence of adverse events were included. Twelve MAs indicated TWP increased the risk of adverse events, of which 4 were graded with moderate quality of evidence. Twenty of the 27 items in the PRISMA checklist were adequately reported with more than 75% compliance among the included SRs, while five of the 12 items in the PRISMA checklist for abstract were found to have less than 50% compliance. The overall reporting quality of SRs published in English was higher than that in Chinese. The methodological quality of the included SRs appraised by AMSTAR-2 ranged from critically low to moderate.
Conclusion: TWP appears effective for DKD on improving proteinuria and increasing the level of serum albumin, accompanied by a higher risk of adverse events. The evidence would be more credible and valuable to guide decision if the quality of the SRs and primary studies is improved.
Systematic Review Registration: PROSPERO CRD42021249560.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9585776 | PMC |
| http://dx.doi.org/10.1186/s13643-022-02091-3 | DOI Listing |
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