Background Platelet-rich plasma (PRP) may be beneficial for patients with low back pain. However, the results remain controversial. We conducted a systematic review and meta-analysis to explore the efficacy of PRP for low back pain. Methods PubMed, Embase, Web of Science, EBSCO, and Cochrane Library databases were searched systematically. Randomized controlled trials (RCTs) assessing the effect of PRP on low back pain were included. Two investigators independently searched articles, extracted data, and assessed the quality of included studies. The primary outcome was pain scores within 8 weeks. Meta-analysis was performed using the random-effects model. Results Three RCTs involving 131 patients were included in the meta-analysis. Overall, compared with control intervention for low back pain, PRP injection was found to reduce pain scores significantly (mean difference: − 1.47; 95% confidence interval [CI], − 2.12 to − 0.81; p < 0.0001), improve the number of patients with > 50% pain relief at 3 months (risk ratio [RR]: 4.14; 95% CI, 2.22–7.74; p < 0.00001), and offer relatively good patient satisfaction (RR: 1.91; 95% CI, 1.04–3.53; p = 0.04). No increase in adverse events was reported after PRP injection (RR: 1.92; 95% CI, 0.94-3.91; p = 0.07). Conclusions Compared with control intervention for low back pain, PRP injection was found to improve pain relief and patient satisfaction significantly with no increase in adverse events.
Background Polydactyly is one of the most common hereditary limb malformation characterized by additional digits in hands and/or feet. With extra fingers/toes, which could be very problematic, polydactyly patients are usually treated in early childhood by removing of extra digits with surgery. Genetically, polydactyly is caused by mutations of genes that involve in digit formation. Methods In the current report, we performed genetic analysis for polydactyly using DNA samples from a cohort of 20 Chinese patients. All patients show preaxial polydactyly in one of their hands. Results With whole‐exome sequencing (WES), we have identified two novel heterozygous mutations c.G2844A in GLI3 gene (OMIM 165240) and c.1409_1410del in EVC gene (OMIM 604831). Compound heterozygous mutations that affect KIAA0586 gene (OMIM 610178) are also detected. Proteins encoded by the genes have important roles in primary cilia and regulate sonic hedgehog signaling pathway. Conclusion Our study highlights the important roles of primary cilia in limb development, and helps to further understand the molecular mechanisms for polydactyly formation.
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