| Summary: | Abnormal glucose metabolism causes various complications in many metabolic diseases such as obesity, hypertension, cardiovascular diseases and mainly diabetes. But commonly used oral hypoglycemic drugs cause severe side effects. Hence, there is a need to find the medicine without side effects. Compounds of medicinal plants were nontoxic, inexpensive and less or no side effects. Syzygium paniculatum Gaertn. (Magenta Cherry) is one of the important medicinal plants in the genus Syzygium. The fruit of S. paniculatum is sour apple-like flavor which tribes using for diabetes without scientific evidence. The purpose of study was to investigate the phytochemical analysis, antihyperglycemic, antihyperlipidemic, antioxidative stress and antioxidant activities of the daily oral administration of the fruit aqueous extract of S. paniculatum at a dose of 100 mg/kg bw over a period of 120 days in Streptozotocin-induced diabetic rats.The plant material collected, shade dried and the extracts prepared in increasing order of polarity and screened for different phytoconstituents by Harborne method. The extract with significant antihyperglycemic activity evaluated for antihyperlipidemic, antioxidative stress, antioxidant activity and also for insulin resistance by OGTT. The levels of insulin, HbA1c, lipid profile, glycogen, total proteins, liver and kidney functional markers were measured. The changes in antioxidant defense system were evaluated by TBARS assay. Histopathological examination of pancreas sections carried by hematoxylin and eosin stain. The findings confirm that S. paniculatum possesses potential antihyperglycemic, antihyperlipidemic, antioxidative stress and antioxidant activity. The histological changes also coincide with its potential on insulin secretion, glycemic control, lipid metabolisms, oxidative stress and antioxidant enzyme activities. This investigation confirms the traditional use of this plant in the folk medicine.
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