Oxygen-controllable injectable hydrogel alleviates intervertebral disc degeneration by balancing extracellular matrix metabolism.

Nucleus pulposus (NP) cells, situated at the core of intervertebral discs, have acclimated to a hypoxic environment, orchestrating the equilibrium of extracellular matrix metabolism (ECM) under the regulatory influence of hypoxia inducible factor-1α (HIF-1α). Neovascularization and increased oxygen content pose a threat, triggering ECM degradation and intervertebral disc degeneration (IVDD). To address this, our study devised an oxygen-controllable strategy, introducing laccase into an injectable and ultrasound-responsive gelatin/agarose hydrogel.

Perioperative management of postoperative sigmoid colon cancer complicated by a large abdominal wall defect: A case report.

Background: Large abdominal wall defect (LAWD) measures > 20 cm in width. LAWD can easily lead to intestinal necrosis, peritonitis, other complications, and even multiple organ dysfunction syndrome. Multiple intestinal fistulas are high-flow fistulas that can cause severe water-electrolyte imbalance and malnutrition, as well as inflammation, high metabolic status, and chronic intestinal failure caused by intestinal fluid corrosion in tissues around the orifice fistulas.