Mechanistic and Pharmacological Evaluation of Cassia rhombifolia Fruit Extract in Murine Models of Pain, Fever, and Acute Inflammation

Thi Phuong Nhung Tran, Thi Hoan Vu, Thi Ngan Nguyen

Abstract

This work investigated the pharmacological profile and dose-response behavior of an ethanol extract prepared from Cassia rhombifolia fruits (EECR) in mouse models of nociception, pyrexia, and short-term inflammatory reactions. Swiss albino mice were given EECR by mouth at 100, 200, or 300 mg/kg. Thermal pain thresholdswere evaluated using the hot plate and tail-flick paradigms. Yeast-induced hyperthermia was employed to assess antipyretic activity, and λ-carrageenan-evoked paw swelling served as an index of acute inflammation. Serum cyclooxygenase-2 (COX-2), prostaglandin E2 (PGE2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), and interleukin-6 (IL-6) were assessed by enzyme-linked immunosorbent assay (ELISA). EECR significantly increased reaction latencies in both nociceptive paradigms and reduced fever and paw edema in a clear dose-related fashion (p < 0.01). At 300 mg/kg, the extract inhibited the tail-flick response by 83.27%, lowered hyperthermia by 68.42%, and diminished paw swelling by 64.25%. These functional benefits were accompanied by a marked suppression of pro-inflammatory mediators, and the EECR dose showed a pronounced negative relationship with cytokine levels (r = −0.98; p < 0.05). Across behavioral and biochemical outcomes, correlation coefficients and determination indices (R2) supported pronounced, almost linear dose-response patterns. Overall, the data indicate that EECR exerts potent pain-relieving, fever-lowering, and inflammation-attenuating effects in animal models and warrant further studies to isolate active principles, clarify molecular mechanisms, and evaluate its translational relevance.

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Authors

Thi Phuong Nhung Tran
tranthiphuongnhung@iuh.edu.vn (Primary Contact)
Thi Hoan Vu
Thi Ngan Nguyen
Tran, T. P. N., Vu, T. H., & Nguyen, T. N. (2026). Mechanistic and Pharmacological Evaluation of Cassia rhombifolia Fruit Extract in Murine Models of Pain, Fever, and Acute Inflammation. Science and Technology Indonesia, 11(1), 366–377. https://doi.org/10.26554/sti.2026.11.1.366-377

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