Phosphorylated chitosan (PC), a water-soluble derivative of chitosan possesses several biological and chemical properties suitable for diabetic wound healing. In the present study, we report the synthesis and diabetic wound healing capabilities of PC. Elemental analysis, FT-IR, 13C-NMR and 31P-NMR techniques were employed for the chemical characterization of PC. In vitro, antioxidant properties of PC were determined in terms of Fe3+ reducing, metal chelating, lipid peroxidation and superoxide scavenging ability. The wound healing potential of PC was assessed in diabetic excisional wound rat model. PC exhibited good water solubility, and in vitro antioxidant capacity. Wound contraction was higher in PC-treated wounds (91.11%) as compared to untreated wounds (67.26%) on 14th-day post wound creation. Histopathology of PC-treated wounds revealed improved tissue morphology with higher number of fibroblasts, a thicker epithelial layer, enhanced collagen deposits and angiogenesis as compared to untreated wounds. An overall increase of 57% and 25% in hydroxylamine and hexosamine content respectively were noted as compared to untreated wounds. A significant (P ≤ 0.05) increase in SOD activity and a significant (P ≤ 0.05) decrease in lipid peroxides were recorded in PC-treated wounds as compared to untreated wounds. These observations demonstrated that PC can be used as an effective agent in diabetic wound healing.
Graphical Abstract
Illustration of phosphorylated chitosan (PC) synthesis and its wound healing potential: Chitosan was phosphorylated to impart diabetic wound healing properties. Chemical characterizations such as elemental analysis, FT-IR and NMR confirmed successful phosphorylation of chitosan. PC exhibited good in vitro antioxidant properties. To assess the diabetic wound healing potential, an excisional wound model was developed in diabetic rats. PC treatment demonstrated accelerated wound healing.
Background: Diabetes mellitus is a common metabolic disorder causing hyperglycemia affecting the world wide population. In recent years most of the plant extracts with their potential antioxidant property are used in the treatment of diabetes mellitus. The aim of our study is to determine protein thiols and glycogen content to evaluate the hypoglycemic activity of the aqueous leaf extract of Bixa orellana using diabetes induced rats.
Objective: The present study was undertaken to evaluate the effects of the aqueous extract of Bixa orellana on the liver enzymes such as AST, ALT and ALP and also to evaluate the efficacy of the extract for the protection of the renal function in streptozotocin induced diabetic rats.Methods: Diabetes was induced by administering streptozotocin dissolved in saline while the normal control group was given propylene glycol. Diabetes induced animals were randomly assigned into different groups. Blood samples were collected from all the control and experimental group. Estimation of urea, uric acid and creatinine as well as the liver enzymes such as AST, ALT and ALP were assayed. These estimations were carried out on day 30 only.
Results:The 30 days treatment with the aqueous extract (200 mg/kg body weight) showed no statistical significance with respect to urea and uric acid but there was statistical significance in the levels of creatinine which is an indicator of glomerular filtration rate. The alteration in the levels of ALT and ALP were highly significant statistically but no changes observed in the level of AST.
Conclusion:The employed dose of the extract is nontoxic to the kidney and it even caused a significant decrease in level of liver enzymes when diabetic induced rat subjected to treatment hence this may indicate the hepatoprotective properties of this extract.
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