Effect of some Tropical Eggplant Fruits (Solanum Spp) Supplemented Diet On Diabetic Neuropathy In Experimental male Wistar Rats In-vivo


  • Esther E. Nwanna
  • Emmanuel O. Ibukun
  • Ganiyu Oboh




Background: Solanum known as eggplant is a popular vegetable crop grown in the subtropics and tropics. Eggplant is a perennial but grown commercially as an annual crop. The fruits of eggplant is primarily used as a cooking vegetable for various dishes. Eggplant   comes in various kinds of species, which are highly variable for its fruit colour, as well as shape and size.

Content and Purpose of this study: This study focused on comparing the effect of dietary African eggplants (AP) Solanum kumba,(PG) Solanum gilo (PW) and Solanum aethiopicum (PGW) species. Diabetes was induced experimentally by high fat fed/low dose streptozotocin-diabetic rats (35 mg/kg body wt.) and the diabetic rats were fed diets supplemented with 20–40% supplemented eggplant diet for 14 days. The effect of the diets on the blood glucose level, pancreatic α-amylase, intestinal α-glucosidase and Angiotensin-I converting enzyme (ACE) activities, plasma antioxidant status were determined also quantification of the fruits polyphenols using HPLC/DAD .

Results: The results revealed that there was no significant (P < 0.05) difference in the average feed intake and weight changes in all the groups. Supplementation with eggplant diet gradually reduced blood glucose level in diabetic rat compared to diabetic rats and metformin-treated (positive control group). African eggplant showed elevated levels of antioxidant status such as (glutathione peroxidase GPX, glutathione transferase GST,reduced  glutathione  GSH,Catalase and Ascorbic acid).

Conclusions:The results suggest that the eggplant may attenuate hyperglycemia, hypertension and oxidative stress in the type 2 diabetic condition with Solanum kumba having the highest activity which could not be far fetched from its polyphenols as revealed in the HPLC/DAD characterization.

Keywords: Solanum spp,polyphenols, diabetes,enzymes





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