A novel family of biodegradable hybrid hydrogels from arginine-based poly(ester amide) and hyaluronic acid precursors

Soft Matter ◽  
2013 ◽  
Vol 9 (15) ◽  
pp. 3965 ◽  
Author(s):  
De-Qun Wu ◽  
Jun Wu ◽  
Chih-Chang Chu
2020 ◽  
Vol 392 ◽  
pp. 123775 ◽  
Author(s):  
Shaohan Zhang ◽  
Jingyi Hou ◽  
Qijuan Yuan ◽  
Peikun Xin ◽  
Huitong Cheng ◽  
...  

2020 ◽  
Vol 16 (1) ◽  
pp. 21-29 ◽  
Author(s):  
M.O. Ilomuanya ◽  
Z.A. Seriki ◽  
U.N. Ubani-Ukoma ◽  
B.A. Oseni ◽  
B.O. Silva

Background: Development and modifications of hybrid hydrogels have been done to improve biological properties or to decrease the disadvantages of biomaterials.Objectives: The efficacy of hyaluronic acid in combination with silver sulphadiazine in wound healing was investigated. The retaining properties of xanthan gum to aid re- epithelialization was also explored.Materials and Method: Four hybrid hydrogels comprising of different concentrations of xanthan gum, eugenol and antimicrobial agents – hyaluronic acid and silver sulphadiazine were formulated. The physicochemical properties of the gels were assessed, and the antimicrobial effectiveness of the different hydrogel were determined using the extent of wound closure as an index.Results: The hydrogel samples had approximately 90% moisture content with rate of evaporation between 26- 32% for a 5 h period at 37oC. The pH of all formulations was between 7.59 - 8.05 considering that the formulation would be applied to underlying tissues of the skin. The swelling index after a 12 h period in distilled water was 10% for HX 1, 27% for HX 2, 29% for HX 3 and 30% for HX 4. There was no new peak observed in the FTIR analysis to indicate formation of new bonds.Conclusion: Incorporation of silver sulphadiazine at 0.1% and hyaluronic acid at 1.5% in the formulation yielded the best results with regards to least presence of inflammatory cell infiltrates and excellent wound closure at 14 days compared to the control and other formulations. Further investigation may be required for clinical use as an effective wound dressing material. Keywords: Silver sulphadiazine, Xanthan gum, Hyaluronic acid, Hydrogels, Wound healing.


2017 ◽  
Vol 9 (4) ◽  
pp. 044108 ◽  
Author(s):  
Simone Stichler ◽  
Thomas Böck ◽  
Naomi Paxton ◽  
Sarah Bertlein ◽  
Riccardo Levato ◽  
...  

2017 ◽  
Vol 46 (8) ◽  
pp. 1217-1219 ◽  
Author(s):  
Kyung-Lynne Park ◽  
Wei Ma ◽  
Yuji Higaki ◽  
Atsushi Takahara

2020 ◽  
Vol 28 (4) ◽  
pp. 400-406 ◽  
Author(s):  
Phuong Le Thi ◽  
Joo Young Son ◽  
Yunki Lee ◽  
Seung Bae Ryu ◽  
Kyung Min Park ◽  
...  

2021 ◽  
Author(s):  
Chenxi Li ◽  
Rui Liu ◽  
Yurong Song ◽  
Dongjie Zhu ◽  
Liuchunyang Yu ◽  
...  

Abstract Triptolide (TP) as a disease-modifying anti-rheumatic drug (DMARD) is effective on the treatment of rheumatoid arthritis (RA). To alleviate the toxicity and elevate therapeutic specificity, hyaluronic acid (HA) hydrogels load RGD-attached gold nanoshell containing TP are synthesized, which can be used for targeted photothermal-chemo therapy, and imaging of RA in vivo. The hydrogels system composed of thiol and tyramine modified HA conjugates has been applied artificial tissue models of cartilage for studying drug delivery and release properties. After the degradation of HA chains, heat together with drugs can be delivered to the inflammatory joints simultaneously due to the near-infrared resonance (NIR) irradiation of Au nanoshell. RA is a chronic inflamed disease, which is characterized by synovial inflammation of multiple joints, and can be penetrated with NIR light. These intra-articular administrated hybrid hydrogels combined with NIR irradiation can improve clinical arthritic conditions and inflamed joints in collagen-induced arthritis (CIA) mice, which just need a smaller dosage of TP with non-toxicity. Additionally, the TP-Au/HA hybrid hydrogels treatment reduced the invasion and migration of RA fibroblast-like synoviocytes (RA-FLSs) in vitro significantly, through reducing the phosphorylation of mTOR and p70S6K, its substrates, and confirmed that the mTOR pathway was inhibited.


2012 ◽  
Vol 291 (3) ◽  
pp. 515-525 ◽  
Author(s):  
Stacey N. Barnaby ◽  
Nako Nakatsuka ◽  
Stephen H. Frayne ◽  
Karl R. Fath ◽  
Ipsita A. Banerjee

2017 ◽  
Vol 66 (12) ◽  
pp. 626-634 ◽  
Author(s):  
Ovidio Catanzano ◽  
Vittoria D’Esposito ◽  
Giovanna Pulcrano ◽  
Sara Maiolino ◽  
Maria Rosaria Ambrosio ◽  
...  

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