BioMed Research International

Volume 2014 (2014), Article ID 412838, 2 pages

http://dx.doi.org/10.1155/2014/412838

Erratum

Erratum to “Detergent-Enzymatic Decellularization of Swine Blood Vessels: Insight on Mechanical Properties for Vascular Tissue Engineering”

Alessandro F. Pellegata,1,2 M. Adelaide Asnaghi,¹ Ilaria Stefani,1,2 Anna Maestroni,³ Silvia Maestroni,³ Tommaso Dominioni,⁴ Sandro Zonta,⁴ Gianpaolo Zerbini,³ and Sara Mantero¹

¹Department of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, Piazza Leonardo da Vinci, 32 20133 Milano, Italy

²PhD Program in Bioengineering, Politecnico di Milano, Piazza Leonardo da Vinci, 32 20133 Milano, Italy

³Complication of Diabetes Unit, Division of Metabolic and Cardiovascular Sciences, San Raffaele Scientific Institute, Milan, Italy

⁴General Surgery I, Fondazione IRCCS Pol. San Matteo, Pavia, Italy

Received 29 July 2013; Accepted 3 October 2013; Published 5 January 2014

Copyright © 2014 Alessandro F. Pellegata et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

In results section, the compliance -axis in Figure  6 had wrong values and now it is correct; furthermore, Table  1 representing median and percentile values of parameters reported in Figure 6 is added.

The correct text for the paragraph is as follows.

3.5. Mechanical Testing Results. The mechanical testing analysis (Figure  6, Table  1) resulted in no statistically significant differences for Young’s modulus, compliance, ultimate circumferential stress, burst pressure, and suture retention strength; on the other hand, there was a significant loss in ultimate strain between native and decellularized vessels; moreover, residual stress after relaxation was increased for decellularized samples compared to native ones.

Table 1: Median and quartile values of mechanical parameters for native, defrozen, and decellularized arterial vessels.

Mechanical parameters
Native
Defrozen
Decellularized

Median
25–75 percentiles
Median
25–75 percentiles
Median
25–75 percentiles

Young’s modulus [MPa]
0.1867
0.1396–0.2016
0.1965
0.1473–0.2486
0.2152
0.1699–0.2365

Compliance [1/mmHg]
0.002606
0.002330–0.004033
0.002644
0.001671–0.003574
0.002270
0.001869–0.003454

Ultimate stress [MPa]
1.554
1.309–1.797
1.889
1.658–2.280
2.007
1.540–2.324

Ultimate strain [mm/mm]
1.830
1.499–2.134
1.830
1.274–1.621
1.347
1.174–1.402

Stress relaxation [%]
57.71
54.71–59.23
75.12
58.31–86.88
77.97
71.14–82.79

Burst pressure [mmHg]
2331
1886–2657
2735
2256–3027
2560
2166–2939

Suture retention [g]
881.9
545.2–953.8
705.4
375.8–1055
731.7
490.4–767.3

(a)

(b)

(c)

(d)

(e)

(f)

(g)

Figure 6: Mechanical analysis. Mechanical testing results for native (N), defrozen (DF), and decellularized (DC) swine arterial vessels. Data are reported as median and 5–95 percentiles, .