Key result
Non-enzymatic isolation techniques achieve SVF cell yields comparable to wash-based methods.
Why the study?
Reported outcomes of non-enzymatic stromal vascular fraction isolation remain heterogeneous and direct quantitative comparisons are limited.
Do different non-enzymatic isolation techniques yield comparable stromal vascular fraction (SVF) cell counts and proliferation rates from human adipose tissue?
Meta-Analysis (n=99)
Yes
Do different non-enzymatic isolation techniques yield comparable stromal vascular fraction (SVF) cell counts and proliferation rates from human adipose tissue?
Absolute Event Rate: 0.34% vs 0.33%
Non-enzymatic SVF isolation offers feasible alternative to enzymatic digestion; confirms comparable yields across wash- and shear-based techniques.
Non-enzymatic isolation of the stromal vascular fraction (SVF) has gained increasing clinical interest due to the regulatory, safety, and logistical constraints associated with enzymatic digestion. However, reported outcomes following their use remain heterogeneous, and direct quantitative comparisons are limited. This systematic review and exploratory meta-analysis aimed to compare SVF yield and in vitro proliferation outcomes across different non-enzymatic isolation techniques. A PRISMA-guided search of PubMed, Scopus, ScienceDirect, Google Scholar, and the Cochrane Library identified 17 eligible studies published up to May 2023. Device-based systems were the most frequently reported (35.3%), followed by wash-based methods (15%), kits (15%), centrifugation (12%), and other mechanical approaches. The pooled mean SVF yield was comparable between wash-based (0.33 × 10⁶ cells/g) and shear force–based techniques (0.34 × 10⁶ cells/g). The proliferative capacity varied across methods, with some mechanical and kit-based systems reaching confluence earlier than wash-based approaches. Substantial heterogeneity was observed across the included studies. These findings present clinically feasible alternatives for SVF recovery, demonstrating comparable mean cell yields across major mechanical categories. Increasing mechanical disruption does not necessarily enhance cell recovery. To enhance reproducibility and facilitate clinical translation, future research should prioritize standardized reporting frameworks and direct head-to-head scalability studies.
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Farhana et al. (2026) conducted a meta-analysis in Stromal Vascular Fraction (SVF) and Adipose-Derived Stem Cells (ADSCs) isolation (n=99). Non-enzymatic isolation techniques vs. Enzymatic isolation methods was evaluated on Pooled mean SVF yield per gram of adipose tissue. Non-enzymatic isolation techniques achieved a pooled mean SVF yield of 0.34 × 10⁶ cells/g, comparable to 0.33 × 10⁶ cells/g for wash-based methods.
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