Polyvinyl Alcohol/Chitosan Composite Hydrogels with Sustained Release of Traditional Tibetan Medicine for Promoting Chronic Diabetic Wound Healing

2021 ◽  
Author(s):  
Xingyu Chen ◽  
Zuxin Wang ◽  
Shan Gao ◽  
Wanlin Zhang ◽  
Hanwen Gong ◽  
...  
Keyword(s):  
Wound Healing ◽  
Polyvinyl Alcohol ◽  
Sustained Release ◽  
Skin Diseases ◽  
Tibetan Medicine ◽  
Diabetic Wound ◽  
Composite Hydrogels ◽  
Diabetic Wound Healing ◽  
Traditional Tibetan Medicine ◽  
Chitosan Composite

The Tibetan eighteen flavor dangshen pills (TEP) are composed of 18 traditional Tibetan medicines, which are commonly used in the treatment of skin diseases in the Tibetan medicine system. They...

scholarly journals Evaluation of burst release and sustained release of pioglitazone-loaded fibrous mats on diabetic wound healing: an in vitro and in vivo comparison study

2020 ◽  
Vol 17 (162) ◽  
pp. 20190712 ◽  
Author(s):  
Muhammet Emin Cam ◽  
Sila Yildiz ◽  
Hussain Alenezi ◽  
Sumeyye Cesur ◽  
Gul Sinemcan Ozcan ◽  
...  
Keyword(s):  
Wound Healing ◽  
Sustained Release ◽  
Burst Release ◽  
Diabetic Wound ◽  
Ppar Γ ◽  
Diabetic Wound Healing ◽  
Diabetic Wounds ◽  
Release Form

In order to provide more effective treatment strategies for the rapid healing of diabetic wounds, novel therapeutic approaches need to be developed. The therapeutic potential of peroxisome proliferator-activated receptor-γ (PPAR-γ) agonist pioglitazone hydrochloride (PHR) in two different release kinetic scenarios, burst release and sustained release, was investigated and compared with in vitro and in vivo tests as potential wound healing dressings. PHR-loaded fibrous mats were successfully fabricated using polyvinyl-pyrrolidone and polycaprolactone by scalable pressurized gyration. The results indicated that PHR-loaded fibrous mats expedited diabetic wound healing in type-1 diabetic rats and did not show any cytotoxic effect on NIH/3T3 (mouse embryo fibroblast) cells, albeit with different release kinetics and efficacies. The wound healing effects of fibrous mats are presented with histological and biochemical evaluations. PHR-loaded fibrous mats improved neutrophil infiltration, oedema, and inflammation and increased epidermal regeneration and fibroblast proliferation, but the formation of hair follicles and completely improved oedema were observed only in the sustained release form. Thus, topical administration of PPAR-γ agonist in sustained release form has high potential for the treatment of diabetic wounds in inflammatory and proliferative phases of healing with high bioavailability and fewer systemic side effects.

scholarly journals Adipose-Derived Stromal Cell-Sheets Sandwiched, Book-Shaped Acellular Dermal Matrix Capable of Sustained Release of Basic Fibroblast Growth Factor Promote Diabetic Wound Healing

2021 ◽  
Vol 9 ◽  
Author(s):  
Xin Shi ◽  
Liyuan Jiang ◽  
Xin Zhao ◽  
Bei Chen ◽  
Wei Shi ◽  
...  
Keyword(s):  
Stem Cells ◽  
Wound Healing ◽  
Growth Factor ◽  
Sustained Release ◽  
Fibroblast Growth Factor ◽  
Stromal Cell ◽  
Fibroblast Growth ◽  
Diabetic Wound ◽  
Dermal Matrix ◽  
Diabetic Wound Healing

The management of diabetic wounds is a therapeutic challenge in clinical settings. Current tissue engineering strategies for diabetic wound healing are insufficient, owing to the lack of an appropriate scaffold that can load a large number of stem cells and induce the interaction of stem cells to form granulation tissue. Herein we fabricated a book-shaped decellularized dermal matrix (BDDM), which shows a high resemblance to native dermal tissue in terms of its histology, microstructure, and ingredients, is non-cytotoxic and low-immunogenic, and allows adipose-derived stromal cell (ASC) attachment and proliferation. Then, a collagen-binding domain (CBD) capable of binding collagen was fused into basic fibroblast growth factor (bFGF) to synthetize a recombinant growth factor (termed as CBD–bFGF). After that, CBD–bFGF was tethered onto the collagen fibers of BDDM to improve its endothelial inducibility. Finally, a functional scaffold (CBD–bFGF/BDDM) was fabricated. In vitro and in vivo experiments demonstrated that CBD–bFGF/BDDM can release tethered bFGF with a sustained release profile, steadily inducing the interaction of stem cells down to endothelial differentiation. ASCs were cultured to form a cell sheet and then sandwiched by CBD–bFGF/BDDM, thus enlarging the number of stem cells loaded into the scaffold. Using a rat model, the ASC sheets sandwiched with CBD–bFGF/BDDM (ASCs/CBD–bFGF/BDDM) were capable of enhancing the formation of granulation tissue, promoting angiogenesis, and facilitating collagen deposition and remodeling. Therefore, the findings of this study demonstrate that ASCs/CBD–bFGF/BDDM could be applicable for diabetic wound healing.

scholarly journals Nanostructured Lipid Carriers of Pioglitazone Loaded Collagen/Chitosan Composite Scaffold for Diabetic Wound Healing

2019 ◽  
Vol 8 (10) ◽  
pp. 499-513 ◽  
Author(s):  
Jawahar Natarajan ◽  
Bharat Kumar Reddy Sanapalli ◽  
Mehjabeen Bano ◽  
Sachin Kumar Singh ◽  
Monica Gulati ◽  
...  
Keyword(s):  
Wound Healing ◽  
Composite Scaffold ◽  
Nanostructured Lipid Carriers ◽  
Diabetic Wound ◽  
Diabetic Wound Healing ◽  
Chitosan Composite

The diabetic wound healing effect of a two-herb formula and its mechanisms of action

Planta Medica ◽  
2012 ◽  
Vol 78 (11) ◽  
Author(s):  
CBS Lau ◽  
VKM Lau ◽  
CL Liu ◽  
PKK Lai ◽  
JCW Tam ◽  
...  
Keyword(s):  
Wound Healing ◽  
Mechanisms Of Action ◽  
Diabetic Wound ◽  
Healing Effect ◽  
Diabetic Wound Healing ◽  
Wound Healing Effect

Critical Regulation of Angiogenesis by Nrf2 Signaling Is Absent in Diabetic Wound Healing

Diabetes ◽  
2018 ◽  
Vol 67 (Supplement 1) ◽  
pp. 634-P
Author(s):  
PIUL S. RABBANI ◽  
JOSHUA A. DAVID ◽  
DARREN L. SULTAN ◽  
ALVARO P. VILLARREAL-PONCE ◽  
JENNIFER KWONG ◽  
...  
Keyword(s):  
Wound Healing ◽  
Diabetic Wound ◽  
Diabetic Wound Healing
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