L-Arginine supplementation enhances diabetic wound healing: Involvement of the nitric oxide synthase and arginase pathways

Metabolism ◽  
2002 ◽  
Vol 51 (10) ◽  
pp. 1269-1273 ◽  
Author(s):  
Maria B. Witte ◽  
Frank J. Thornton ◽  
Udaya Tantry ◽  
Adrian Barbul
Keyword(s):  
Nitric Oxide ◽  
Wound Healing ◽  
Nitric Oxide Synthase ◽  
Diabetic Wound ◽  
Diabetic Wound Healing ◽  
Oxide Synthase ◽  
Arginine Supplementation

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 Nitric Oxide Therapy for Diabetic Wound Healing

2019 ◽  
Vol 8 (12) ◽  
pp. 1801210 ◽  
Author(s):  
Maggie J. Malone‐Povolny ◽  
Sara E. Maloney ◽  
Mark H. Schoenfisch
Keyword(s):  
Nitric Oxide ◽  
Wound Healing ◽  
Diabetic Wound ◽  
Diabetic Wound Healing ◽  
Nitric Oxide Therapy

Curcumin differentially regulates TGF-β1, its receptors and nitric oxide synthase during impaired wound healing

BioFactors ◽  
2002 ◽  
Vol 16 (1-2) ◽  
pp. 29-43 ◽  
Author(s):  
Haresh Mani ◽  
Gurmel S. Sidhu ◽  
Ranjana Kumari ◽  
Jaya P. Gaddipati ◽  
Pankaj Seth ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Wound Healing ◽  
Nitric Oxide Synthase ◽  
Impaired Wound Healing ◽  
Oxide Synthase ◽  
Tgf Β1

scholarly journals Nitric Oxide Synthase Gene Transfer Overcomes the Inhibition of Wound Healing by Sulfur Mustard in a Human Keratinocyte In Vitro Model

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Hiroshi Ishida ◽  
Radharaman Ray ◽  
Jack Amnuaysirikul ◽  
Keiko Ishida ◽  
Prabhati Ray
Keyword(s):  
Nitric Oxide ◽  
Wound Healing ◽  
Nitric Oxide Synthase ◽  
Gene Transfer ◽  
Sulfur Mustard ◽  
No Production ◽  
Skin Injury ◽  
Inos Gene ◽  
Oxide Synthase

Sulfur mustard (SM) is a chemical warfare agent that causes extensive skin injury. Previously we reported that SM exposure resulted in suppression of inducible nitric oxide synthase (iNOS) expression to inhibit the healing of scratch wounds in a cultured normal human epidermal keratinocyte (NHEK) model. Based on this finding, the present study was to use adenovirus-mediated gene transfer of iNOS to restore the nitric oxide (NO) supply depleted by exposure to SM and to evaluate the effect of NO on wound healing inhibited by SM in NHEKs. The effect of the iNOS gene transfer on iNOS protein expression and NO generation were monitored by Western blot and flow cytometry, respectively. Wound healing with or without the iNOS gene transfer after SM exposure was assessed by light and confocal microscopy. The iNOS gene transfer via adenovirus resulted in overexpression of the iNOS and an increase in NO production regardless of SM exposure in the NHEK model. The gene transfer was also effective in overcoming the inhibition of wound healing due to SM exposure leading to the promotion of wound closure. The findings in this study suggest that the iNOS gene transfer is a promising therapeutic strategy for SM-induced skin injury.

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