Acceleration of diabetic-wound healing with PEGylated rhaFGF in healing-impaired streptozocin diabetic rats

2011 ◽  
Vol 19 (5) ◽  
pp. 633-644 ◽  
Author(s):  
Zhifeng Huang ◽  
Meifei Lu ◽  
Guanghui Zhu ◽  
Hongchang Gao ◽  
Liyun Xie ◽  
...  
Keyword(s):  
Wound Healing ◽  
Diabetic Rats ◽  
Diabetic Wound ◽  
Diabetic Wound Healing

Improved stability of KGF by conjugation with gold nanoparticles for diabetic wound therapy

Nanomedicine ◽  
2019 ◽  
Vol 14 (22) ◽  
pp. 2909-2923 ◽  
Author(s):  
Shuaihua Li ◽  
Qiyu Tang ◽  
Hongbo Xu ◽  
Qiangru Huang ◽  
Zi Wen ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Wound Healing ◽  
Binding Affinity ◽  
Biological Effects ◽  
Diabetic Rats ◽  
Diabetic Wound ◽  
Wound Therapy ◽  
Improved Stability ◽  
Diabetic Wound Healing

Aim: Diabetic wound healing is seriously interrupted, and administration of KGF for wound treatment is restricted by its inherent instability. We aim to develop an ideal way toward KGF stabilization, thus improving diabetic wound healing. Materials & methods: We conjugated KGF with gold nanoparticles (GNPs) and determined the stability and binding affinity. Biological effects of conjugates (KGF-GNPs) were evaluated in vitro and in an animal model. Results: KGF-GNPs revealed high stability under hostile circumstances because of the preserved secondary structure and possessed elevated binding affinity to KGF receptor. Moreover, application of KGF-GNPs contributed to accelerated wound recovery in diabetic rats, including re-epithelialization and contraction. Conclusion: KGF-GNPs were promising for future clinical application for diabetic wound therapy.

scholarly journals Aloe Gel Enhances Angiogenesis in Healing of Diabetic Wound

2011 ◽  
Vol 3 (3) ◽  
pp. 204
Author(s):  
Djanggan Sargowo ◽  
Adeodatus Yuda Handaya ◽  
Mohammad Aris Widodo ◽  
Diana Lyrawati ◽  
Askandar Tjokroprawiro
Keyword(s):  
Nitric Oxide ◽  
Wound Healing ◽  
Wistar Rats ◽  
Aloe Vera ◽  
Diabetic Rats ◽  
Diabetic Wound ◽  
Aloe Vera Gel ◽  
Diabetic Wound Healing ◽  
Aloe Gel ◽  
Oxide Synthase

BACKGROUND: Diabetic micro and macroangiophathy lead to the incident of diabetic foot ulcers characterized by an increased number of circulating endothelial cells (CECs) and decreased function of endothelial progenitor cells (EPCs). This fact is correlated with ischemia and diabetic wound healing failure. Aloe vera gel is known to be able to stimulate vascular endothelial growth factor (VEGF) expression and activity by enhancing nitric oxide (NO) production as a result of nitric oxide synthase (NOS) enzyme activity. Aloe vera is a potential target to enhancing angiogenesis in wound healing.OBJECTIVE: The objective of this study was to explore the major role of Aloe vera gel in wound healing of diabetic ulcers by increasing the level of EPCs, VEGF, and endothelial nitric oxide synthase (eNOS), as well as by reducing the level of CECs involved in angiogenesis process of diabetic ulcers healing.METHODS: The experimental groups was divided into five subgroups consisting of non diabetic wistar rats, diabetic rats without oral administration of aloe gel, and treatment subgroup (diabetic rats) with 30, 60 and 120 mg/day of aloe gel doses for 14 days. All subgroups were wounded and daily observation was done on the wounds areas. Measurement of the number of EPCs (CD34), and CECs (CD45 and CD146) was done by flowcytometry, followed by measurement of VEGF and eNOS expression on dermal tissue by immunohistochemical method on day 0 and day 14 after treatment. The quantitative data were analyzed by One-Way ANOVA and Linear Regression, with a cofidence interval 5% and significance level (p<0.05) using SPSS 16 software to compare the difference and correlation between wound diameters, number of EPCs and CECs as well as the levels of VEGF and eNOS.RESULTS: The results of this study showed that aloe gel oral treatment in diabetic wistar rats was able to accelerate the wound healing process. It was shown by significant reduction of wound diameter (0.27±0.02); the increased number of CECs (0.42±0.57), respectively (p<0.05). On the other hand, the wound diameter and eNOS indicators showed significant differences at the dose of 60 mg, while the number of EPCs and CECs and the level of VEGF showed significantly different results at a dose of 120 mg. Aloe gel oral therapy showed a positive indication of wound healing acceleration at the optimum dose range 60-120 mg a day.CONCLUSIONS: Aloe gel is potential to be a herbal therapy candidate for diabetic wound healing through enhancing EPCs homing, decreasing the CECs number, and stimulating the increase of VEGF and eNOS levels,hence proving to be a dominant factor in the angiogenesis process.KEYWORDS: aloe gel, diabetes, wound healing, angiogenesis

scholarly journals Hydro-Alcoholic Root Extracts of Ziziphus abyssinica is Effective in Diabetes Nephropathy and Diabetic Wound Healing

2021 ◽  
pp. 19-29
Author(s):  
Samuel A. Akwetey ◽  
Douglas B. Aidoo ◽  
Wisdom Ahlidja ◽  
Bright B. Boafo ◽  
Joseph M. Acquah ◽  
...  
Keyword(s):  
Wound Healing ◽  
Diabetic Nephropathy ◽  
Blood Glucose ◽  
Blood Glucose Concentration ◽  
Negative Control ◽  
Diabetic Rats ◽  
Histopathological Analysis ◽  
Root Extract ◽  
Diabetic Wound ◽  
Diabetic Wound Healing

Background: This study evaluated the potential of Ziziphus abysinnica root extract in managing hyperglycaemia in type 2 diabetes mellitus (T2DM), diabetic wound healing and diabetic nephropathy. Methodology: Blood glucose concentrations were measured daily for 14 days after daily administrations of either Ziziphus abysinnica (30, 100, and 300 mg/kg, p.o), metformin (300 mg/kg, p.o) or normal saline as negative control before diabetes induction using a single dose of Streptozotocin (60 mg/kg, i.p) and nicotinamide (120 mg/kg, i.p). Histopathological analysis was performed on the harvested kidneys following administration with Ziziphus abysinnica in diabetic rats. The diabetic wound healing potentials of the plant was also evaluated in streptozotocin-induced diabetic rats by treating them with 15%w/w ZAE ointment. Results: Generally, the percentage of blood glucose levels analysed following administration of drugs were found to be dose-dependent. The highest dose of ZAE (300 mg/kg) had a higher percentage reduction in blood glucose concentration when compared to metformin (300 mg/kg).  The lowest dose (30 mg/kg) of ZAE administered attenuated STZ induced pathological damage and showed moderate to maximal improvement to the kidney nephrons. In contrast, the 100 mg/kg and 300 mg/kg dose ZAE demonstrated minimal pathological changes to the kidney architecture. Conclusion: Overall, our study demonstrated the antidiabetic potential of Ziziphus abysinnica, suggesting its possible therapeutic benefit in diabetic wound healing and diabetic nephropathy. 

scholarly journals The Wound Healing Effect of Nanoclay, Collagen, and Tadalafil in Diabetic Rats: An In Vivo Study

2022 ◽  
Vol 2022 ◽  
pp. 1-10
Author(s):  
Allahyar Noori Ordeghan ◽  
Danial Khayatan ◽  
Mohammad Reza Saki ◽  
Mostafa Alam ◽  
Kamyar Abbasi ◽  
...  
Keyword(s):  
Wound Healing ◽  
Inhibitory Effect ◽  
Exercise Group ◽  
Diabetic Rats ◽  
Hair Follicles ◽  
Diabetic Wound ◽  
Diabetic Wound Healing ◽  
Management Approaches ◽  
And Control

The diabetic wound is the most challenging one to manage, which is associated with microvascular and macrovascular dysfunction, and novel strategies such as using hydrogels demonstrate their promising prospect in treatment and management approaches of the diabetic wound. This study aimed to investigate the effect of collagen/nanoclay/tadalafil hydrogel on wound healing in diabetic rats under HIIT exercise. Hydrogel was synthesized, and then biocompatibility and antibacterial tests were performed. The therapeutic effect of collagen/nanoclay/tadalafil hydrogel was assessed after induction of diabetes in the rat model, and wound healing was evaluated with macroscopic and microscopic tests. The result of the MTT test showed no significant cytotoxicity of collagen/nanoclay/tadalafil hydrogel. Furthermore, the inhibitory effect of hydrogel was detected on E. coli and S. aureus. The macroscopic results demonstrated that the wound contraction was considerable in the hydrogel/HIIT exercise and hydrogel groups compared with the HIIT exercise and control groups during 21 days. The microscopic results showed that the presence of fibroblasts, the amount of collagen, the epidermis density, and the formation of hair follicles were increased in the hydrogel/HIIT exercise group compared with other groups in the diabetic rate model. It can be concluded that collagen/nanoclay/tadalafil hydrogel with HIIT exercise could accelerate diabetic wound healing and can be an appropriate candidate for skin regeneration in medical applications.

scholarly journals Sustained Delivery of MMP-9 siRNA via Thermosensitive Hydrogel Accelerates Diabetic Wound Healing

2021 ◽  
Author(s):  
Biyun Lan ◽  
Liming Zhang ◽  
Liqun Yang ◽  
Junfeng Wu ◽  
Na Li ◽  
...  
Keyword(s):  
Wound Healing ◽  
Chronic Wounds ◽  
Diabetic Rats ◽  
Sustained Delivery ◽  
Diabetic Wound ◽  
Thermosensitive Hydrogel ◽  
Hybrid Hydrogel ◽  
Diabetic Wound Healing ◽  
Metalloproteinase 9

Abstract Excessive expression of matrix metalloproteinase 9 (MMP-9) impedes healing of diabetic chronic wounds, thus wound dressing that could effectively inhibit the expression of MMP-9 offers significant clinical translation for diabetic wound healing. Herein, a hybrid hydrogel dressing was developed for localized and sustained delivery of MMP-9 siRNA (siMMP-9). siMMP-9 was complexed with Gly-TETA (GT), the GT/siMMP9 complex was then loaded into a thermosensitive hydrogel based on Pluronic F-127 (PF) and methylcellulose (MC). In vitro, this hybrid hydrogel dressing exhibited negligible cytotoxicity, prolonged the release of GT/siMMP-9 for up to 7 days, and significantly reduced MMP-9 expression. In vivo assessment in diabetic rats demonstrated that hydrogel provided localized and sustained delivery via the thermosensitive controlled release of entrapped GT/siMMP-9 into wound tissues for 7 days, resulting in dramatic MMP-9 silencing which significantly improved diabetic wound closure. This hybrid hydrogel dressing exhibited excellent biocompatibility, with no observed systemic toxicity in rats. Taken together, the hybrid hydrogel dressing may constitute an effective and biocompatible means of enhancing diabetic wound healing through effective silencing of the MMP-9 gene, and this hydrogel delivery system also offers a platform for in vivo delivery of siRNA for the treatment of other diseases.

scholarly journals Botrops derived hemocoagulase formulation a probable agent for diabetic wound healing

3 Biotech ◽  
2020 ◽  
Vol 10 (10) ◽  
Author(s):  
Raghuvir Keni ◽  
Karthik Gourishetti ◽  
Manas Kinra ◽  
Pawan G. Nayak ◽  
Rekha Shenoy ◽  
...  
Keyword(s):  
Wound Healing ◽  
Topical Application ◽  
Wound Closure ◽  
Punch Biopsy ◽  
Diabetic Rats ◽  
Dorsal Side ◽  
Collagen Deposition ◽  
Diabetic Wound ◽  
Diabetic Wound Healing ◽  
Diabetic Wounds

Abstract Botroclot is a marketed preparation containing hemocoagulase, which is an enzyme having coagulant activity, isolated from the snake Botrops atrox. This formulation is used in dental surgeries and other minor surgical wounds. However, the formulation remains untested in diabetic wounds. Hence, we proposed a study for the topical application of Botroclot in high-fat diet (HFD) + Streptozotocin (STZ) induced diabetic rats. HFD was fed initially to rats which facilitates the development of insulin resistance. Thereafter, an injection of STZ (40 mg/kg, i.p.) was given. This resulted in the development of diabetes with elevated fasting glucose and impaired glucose tolerance. After stabilization of blood glucose values, wounds were created by punch biopsy on the dorsal side of the palm of the rat to mimic the diabetic wounds frequently seen in the case of humans. Later, the application of Botroclot on these wounds was carried out for 15 days. Topical application of hemocoagulase improved the wound closure and there was a gradual decrease in inflammatory markers and a substantial increase in collagen deposition occurred. Histopathological findings indicated the same, with an increase in granulation tissue suggesting that the topical application moderately improves the wound healing in diabetic rats. We conclude that Botroclot can have a mild to moderate effect in improving collagen deposition and thus wound contraction, improving wound closure in diabetic wounds in rats. This study also establishes the basis for exploration of agents from venom-based sources in diabetic wound healing.

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