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Fig. 6 | Biomaterials Research

Fig. 6

From: Aligned nanofibrous collagen membranes from fish swim bladder as a tough and acid-resistant suture for pH-regulated stomach perforation and tendon rupture

Fig. 6

Multi-functional suture for inhibiting gastric acid secretion, fluorescence localization and intragastric pH monitoring. A VF, fluorescein sodium and Congo red laden in DCDS suture. B Release of VF. C DCDS suture with fluorescein sodium (c1) and on the pigskin (c2). D Color change of DCDS sutures before (d1) and after soaking in PBS for 3 days (d2) and under UV (d3–4). E Fluorescein release curve (FS: Fluorescein sodium). F Appearing color (f1) and grayscale (f2) of DCDS sutures with Congo red immersed at different pH solutions, and color was reversible in response to pH change between pH = 1 and 7 (f3). Suturing gastric fistula in rabbits with Congo red and VF (G), and color comparison with gastroscopy after the different times (H)

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Biomaterials Research

ISSN: 2055-7124

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