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Colony-Stimulating Factors on Mobilizing CD34(+) Cells and Improving Neurological Functions in Patients With Stroke: A Meta-Analysis and a Systematic Review

Journal

FRONTIERS IN PHARMACOLOGY
Volume 12, Issue -, Pages -

Publisher

FRONTIERS MEDIA SA
DOI: 10.3389/fphar.2021.704509

Keywords

stroke; colony-stimulating factor; meta-analysis; therapy; neurological diseases

Funding

  1. Shanghai Minhang District Health and Family Planning Commission (great discipline of Shanghai Minhang District) [2020MWDXK01]
  2. Shanghai Fifth People's Hospital Construction Project for Key Specialty [2020WYZDZK04]

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This meta-analysis investigated the safety and efficacy of CSF therapy for stroke patients, finding no statistical differences in prognosis but an increase in CD34(+) cell counts in the periphery blood at day 5. These results suggest that CSF may play a role in stroke recovery, although its efficacy in this regard requires further examination.
Background and Purpose: CSF therapy is considered a promising therapeutic approach for stroke. We performed a meta-analysis to explore the safety and efficacy of CSF in published clinical stroke studies. Methods: We searched articles online and manually. Two reviewers selected studies independently, selecting data based on study quality, characteristics of intervention (administration time, observation time, type, dose, and injection approach of CSF), and the baseline characteristics of patients (age, sex, hypertension, diabetes, smoker, and lipids) were extracted. Main prognosis outcomes were measured as all-cause death in severe adverse events (SAE) and recurrent stroke in SAE. Secondary outcomes were measured as CD34(+) cell counts in periphery blood at day 5, National Institutes of Health Stroke Scale (NIHSS), and Barthel index (BI), Side effects of CSF were taken as the indicator of safety. STATA13 software was used to perform the meta-analysis. Keywords: Stroke, Colony-stimulating factor, Meta-analysis, therapy, Neurological Diseases Results: This meta-analysis involved 485 patients from eight studies. Among them, 475 patients from seven studies were gauged SAE (all-cause death), 393 patients from six studies were checked SAE (recurrent stroke); 137 patients from three studies underwent CD34(+) measurement, 389 patients from six studies were tested NIHSS and 307 patients from five studies accessed BI. Compared with the control group, both all-causes death (RR=1.73, 95%CI=(0.61, 4.92), P=0.735, I-2=0.0%) and recurrent stroke (RR=0.43, 95% CI=(0.14, 1.32), P=0.214, I-2=33.1%) present no statistical differences, indicating that the application of CSF does not statistically alter the prognosis of patients with stroke. The application of CSF effectively enhanced CD34(+) cell counts in periphery blood at day 5 (SMD=1.23, 95%CI=(0.54, 1.92), P=0.04, I-2=69.0%) but did not statistically impact NIHSS (SMD=-0.40, 95%CI=(-0.93, 0.13), P = 0.001, I-2=79.7%) or BI (SMD=0.04, 95% CI=(-0.38, 0.46), P=0.068, I-2=54.3%). Conclusion: Our study consolidates the security of CSF administration for its exerting no effect on detrimental outcomes. It has proven to be effective in elevating CD34(+) cell counts in periphery blood at day 5, indicating CSF may participate in stroke recovery, but its efficacy in stroke recovery remains detected.

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