Neuroprotective effects ofGarcinia kolaand curcumin on diabetic transected sciatic nerve

Area of Science:

• Neuroscience
• Regenerative Medicine
• Pharmacology

Background:

• Peripheral nerve injury and diabetes mellitus (DM) impede nerve regeneration.
• Developing effective treatments for post-traumatic nerve repair in diabetic conditions is crucial.

Purpose of the Study:

• To investigate the effects of Garcinia kola (GK) and curcumin on transected and diabetic sciatic nerves in a rat model.
• To evaluate the efficacy of GK and curcumin in promoting peripheral nerve regeneration under diabetic complications.

Main Methods:

• Sciatic nerve transection and repair using external jugular vein grafts in Wistar albino rats.
• Induction of diabetes mellitus and administration of GK (200 mg/kg/d for 7 days) or curcumin (300 mg/kg/d for 28 days).
• Stereological analysis, functional (Sciatic Functional Index - SFI), and microscopic evaluations were performed after three months.

Main Results:

• Garcinia kola (GK) treatment led to increased axon numbers and myelin sheath thickness compared to controls.
• Curcumin showed a slight improvement in axonal area, while GK demonstrated superior functional recovery based on SFI.
• No significant electrophysiological differences were noted between transected + diabetes mellitus (T + DM) and control groups.

Conclusions:

• Garcinia kola (GK) is effective in promoting peripheral nerve regeneration in a diabetic rat model.
• GK exhibits a more pronounced positive effect on functional recovery than curcumin in this context.
• The study supports GK as a potential therapeutic agent for diabetic peripheral neuropathy.