ArticleAesthetic plastic surgery2026
An Experimental Sequential Digestion Method for Efficient Isolation of Human Adipose-Derived Microvascular Fragments with Enhanced Angiogenic Potential.
Article in Aesthetic plastic surgery, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundMicrovascular fragments (MVFs) are intact vascular segments derived from adipose tissue that possess considerable potential for promoting tissue vascularization in regenerative medicine. However, conventional single-step enzymatic digestion methods often lead to incomplete adipose tissue dissociation and poor MVF quality.
methodsWe developed and validated a sequential enzymatic digestion protocol optimized for isolating MVFs from human lipoaspirate. Adipose samples were processed using either a conventional one-step collagenase digestion or a three-step sequential method. MVFs were evaluated for yield, viability, structural integrity, cellular phenotype, and angiogenic function both in vitro and in vivo.
resultsCompared with the conventional approach, the sequential protocol produced a 2.2-fold increase in MVF yield and significantly reduced undigested tissue residues (p < 0.0001). MVFs isolated by the sequential protocol showed superior cell viability (93.3% vs. 75.6%), a greater proportion of long fragments, preserved endothelial and perivascular architecture, and enhanced angiogenic performance in collagen gel assays and mouse subcutaneous implantation models.
conclusionsThis optimized sequential digestion protocol enables the efficient and producible isolation of high-quality MVFs from human adipose tissue. It holds great promise for applications in vascularized tissue engineering and regenerative therapies. NO LEVEL ASSIGNED: This journal requires that authors assign a level of evidence to each submission to which Evidence-Based Medicine rankings are applicable. This excludes Review Articles, Book Reviews, and manuscripts that concern Basic Science, Animal Studies, Cadaver Studies, and Experimental Studies. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
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