Pharmacognostic Standardization, Phytochemical Analysis, and Psychopharmacological Assessment of Celastrus paniculatus

Background: Celastrus paniculatus Willd. (Celastraceae), traditionally classified as a Medhya Rasayana in the Ayurvedic system of medicine, is widely revered for its profound neuroprotective and cognitive-enhancing properties. The present study was meticulously designed to establish comprehensive pharmacognostic standards, evaluate the phytochemical profile via chromatographic fingerprinting, and validate the psychopharmacological efficacy of its extracts. Material and Methods: The botanical identification and quality control standardization were achieved through macroscopic, microscopic, and physicochemical evaluations. Successive solvent extraction was followed by qualitative phytochemical screening. Following acute oral toxicity testing (OECD Guideline 423), the psychopharmacological potential was assessed in Swiss albino mice using the Forced Swim Test (FST), Elevated Plus Maze (EPM), Hole-board test, and Actophotometer at therapeutic doses of 200 and 400 mg/kg p.o. Results: Pharmacognostic investigations established species-specific diagnostic markers, including distinct quantitative leaf constants and powder microscopy features. Phytochemical analysis of the methanolic extract revealed a high abundance of flavonoids, triterpenoids, and phenolic compounds, with HPLC successfully quantifying celastrol at 2.45% w/w. In vivo behavioral models demonstrated that the methanolic extract (400 mg/kg) produced highly significant (p < 0.001), dose-dependent antidepressant-like effects by reducing immobility time in the FST. Furthermore, it exhibited potent anxiolytic activity, evidenced by increased open-arm exploration in the EPM and enhanced head-dipping frequency in the hole-board paradigm, alongside a moderate, balanced reduction in spontaneous locomotor activity. Conclusion: The established pharmacognostic parameters and chromatographic fingerprints provide robust analytical tools for the stringent quality control of C. paniculatus. The significant antidepressant and anxiolytic activities experimentally validate its traditional ethnopharmacological claims, strongly suggesting its therapeutic potential in managing neuropsychiatric disorders, largely attributable to bioactive phytoconstituents like celastrol.