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Hygrophila spinosa T Ander, belonging to the family Acanthaceae, is a promising medicinal plant with great economic potential. The medicinal value of H. spinosa has been appreciated in the ancient medical literature. The plant contains terpenoids, alkaloids, flavonoids, and is traditionally known as an aphrodisiac, renal tonic, and for its health-promoting properties. The plant is cultivated throughout India. However, systematic information on the different aspects of this species is not available. In this review, an attempt has been made to present this information.

Diabetic neuropathic pain, an important microvascular complication in diabetes, is recognised as one of the most difficult types of pain to treat. The development of tolerance, inadequate relief, and potential toxicity of classical antinociceptives warrant the investigation of the newer agents to relieve this pain. Reactive oxygen/nitrogen species, increased oxidative stress, cytokines, and apoptosis are implicated in the pathogenesis of diabetic neuropathy. The aim of the present study was to explore the effect of methanolic extract of aerial parts of H. spinosa (HSME) on alloxan induced diabetic neuropathy in Wistar rats. Diabetic rats developed neuropathy after the third week of diabetes induction. Chronic treatment with HSME (250, 500, and 750 mg/kg body weight; p.o.) for 6 weeks starting from the 3rd week of alloxan injection showed significant increase in the pain threshold levels as compared to diabetic rats. HSME treated diabetic animals showed significant decrease in blood glucose level and increase in body weight as compared to diabetic control animals. The changes in lipid peroxidation status and antioxidant enzymes levels observed in sciatic nerve of diabetic rats were significantly restored by HSME treatment. Thus, the results suggest therapeutic potential of H. spinosa in treatment of diabetic neuropathy.