Πέμπτη 3 Δεκεμβρίου 2020

Experimental investigation of esophageal reconstruction with electrospun polyurethane nanofiber and 3D printing polycaprolactone scaffolds using a rat model

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Abstract

Background

We evaluated the outcome of esophageal reconstructions using tissue‐engineered scaffolds.

Method

Partial esophageal defects were reconstructed with the following scaffolds; animals were grouped (n = 7 per group) as follows: (a) normal rats; (b) rats implanted with three‐dimensional printing (3DP) polycaprolactone (PCL) scaffolds; (c) with human adipose‐derived mesenchymal stem cell (ADSC)‐seeded 3DP PCL scaffolds; (d) with polyurethane (PU)‐nanofiber(Nf) scaffolds; and (e) with ADSC‐seeded PU‐Nf scaffolds.

Results

The esophageal defects were successfully repaired; however, muscle regeneration was greater in the 3DP PCL + ADSC groups than in the PU‐Nf + ADSC groups (P < .001). Regeneration of the epithelium was greater in PU‐Nf and PU‐Nf + ADSC groups than in the 3DP PCL and 3DP PCL + ADSC groups (P < .001).

Conclusion

A tendency for more re‐epithelization was observed with the PU‐Nf scaffolds, while more muscle regeneration was achieved with the 3DP PCL scaffolds.

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