Preparation and characterisation of a new form of silymarin as a potential antidiabetic agent in the adult male rat

Abstract

Silymarin is used for a wide variety of biological applications including, antidiabetic activities. However, the effectiveness of Silymarin is affected by its poor aqueous solubility and low systemic bioavailability after oral administration. The present study aimed to formulate a new, simple, and inexpensive form of silymarin solution. A new form of silymarin solution (NFSM) characterised by small particle size (227.5 nm), high entrapment efficiency (>82), and appropriate zeta potential(-24.7mv). Moreover, the antidiabetic effects of NESM were evaluated relative to native Silymarin (SM). Oral administration of NFSM for 14 days in diabetic rats significantly decreased fasting blood glucose, oxidative stress levels, and improved lipid profile compared with SM. Also, NFSM significantly increased serum insulin levels, the gene expression of insulin and Pdx1, restored and improved the structure of the liver, and pancreas histologically. Our results concluded that NFSM may be an efficient carrier for oral delivery of silymarin for the management of diabetes and aggravated antioxidant status.