Table 1.
Stability in cell culture medium | |||||
---|---|---|---|---|---|
Time | (a) Mean size (nm) | (b) Concentration (part/mL) | (c) Percentage decrease (as percentage) from initial t0 value %co-ZnO |
||
Medium | TNHs | Medium | TNHs | ||
t0 | 86 ± 4 | 128 ± 8 | 3.88 × 109 ± 3.44 × 108 | 3.96 × 109 ± 5.57 × 108 | – |
1 h | 79 ± 5 | 144 ± 4 | 5.18 × 109 ± 1.05 × 108 | 6.42 × 109 ± 4.25 × 108 | − 17 ± 3% |
24 h | 78 ± 6 | 138 ± 3 | 3.60 × 109 ± 1.50 × 108 | 7.52 × 109 ± 1.40 × 109 | − 20 ± 4% |
48 h | 83 ± 4 | 135 ± 13 | 4.60 × 109 ± 7.73 × 108 | 5.66 × 109 ± 1.23 × 109 | − 15 ± 10% |
(d) Clotting time in human recovered plasma | ||||
---|---|---|---|---|
Ctrl (plasma) | Plasma + Phys. solution | Plasma + Phys. solution + water | Plasma + Phys. solution + water and TNHs | |
Time (min) | 10.3 ± 0.3 | 10.4 ± 0.3 | 10.7 ± 0.5 | 9.5 ± 0.6 |
(a) Mean size and (b) concentration of TNHs assessed through Nanoparticles Tracking Analysis at t0 and after 1, 24 and 48 h incubation at 37 °C in cell culture medium. (c) Estimation of the coupling efficiency after 1, 24 and 48 h incubation at 37 °C in cell culture medium expressed as percentage decrease of %co-ZnO with respect to t0. (d) Plasma clotting time measurements following the incubation with TNHs. The values for plasma alone, plasma/physiological solution, plasma/bd water and physiological solution 1:1 (v/v) are reported as controls. All experiments were conducted at least in duplicate