1. Injectable polyamide-amine dendrimer-crosslinked meloxicam-containing poly-γ-glutamic acid hydrogel for prevention of postoperative tissue adhesion through inhibiting inflammatory responses and balancing the fibrinolytic system.
- Author
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Li X, Cai J, Duan X, Zhang Y, Cui M, Wang S, An X, and Wang H
- Subjects
- Animals, Tissue Adhesions prevention & control, Mice, Inflammation prevention & control, Inflammation drug therapy, Anti-Inflammatory Agents, Non-Steroidal pharmacology, Anti-Inflammatory Agents, Non-Steroidal chemistry, Anti-Inflammatory Agents, Non-Steroidal administration & dosage, Rats, Rats, Sprague-Dawley, Fibrinolysis drug effects, Postoperative Complications prevention & control, Particle Size, Injections, Drug Carriers chemistry, Hydrogels chemistry, Hydrogels pharmacology, Polyglutamic Acid chemistry, Polyglutamic Acid pharmacology, Polyglutamic Acid analogs & derivatives, Nylons chemistry, Dendrimers chemistry, Dendrimers pharmacology, Meloxicam chemistry, Meloxicam pharmacology, Meloxicam administration & dosage
- Abstract
Establishing a physical barrier between the peritoneum and the cecum is an effective method to reduce the risk of postoperative abdominal adhesions. Meloxicam (MX), a nonsteroidal anti-inflammatory drug has also been applied to prevent postoperative adhesions. However, its poor water solubility has led to low bioavailability. Herein, we developed an injectable hydrogel as a barrier and drug carrier for simultaneous postoperative adhesion prevention and treatment. A third-generation polyamide-amine dendrimer (G3) was exploited to dynamically combine with MX to increase the solubility and the bioavailability. The formed G3@MX was further used to crosslink with poly-γ-glutamic acid (γ-PGA) to prepare a hydrogel (GP@MX hydrogel) through the amide bonding. In vitro and in vivo experiments evidenced that the hydrogel had good biosafety and biodegradability. More importantly, the prepared hydrogel could control the release of MX, and the released MX is able to inhibit inflammatory responses and balance the fibrinolytic system in the injury tissues in vivo. The tunable rheological and mechanical properties (compressive moduli: from ∼ 57.31 kPa to ∼ 98.68 kPa;) and high anti-oxidant capacity (total free radical scavenging rate of ∼ 94.56 %), in conjunction with their syringeability and biocompatibility, indicate possible opportunities for the development of advanced hydrogels for postoperative tissue adhesions management., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 Elsevier Inc. All rights reserved.)
- Published
- 2024
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