EXPRESSION OF HMGB-1 GENE

Icacina trichantha is a medicinal plant traditionally used in West Africa for its hematinic and immunomodulatory properties. The study is aimed to evaluate the effect of aqueous leaf extract of Icacina trichantha on the expression of the High-Mobility Group Box-1 (HMGB-1) gene in Wistar rats with aluminum chloride–induced anaemia. Sixty (60) adult male Wistar rats were divided into six (6) groups: Group A (Control), Group B (AlCl₃ only), Group C (AlCl₃ + 40 mg/kg ferrous sulphate), and Groups D, E, and F (AlCl₃ + 100 mg/kg, 200 mg/kg, and 400 mg/kg I. trichantha extract, respectively). Blood samples were analyzed for white blood cell parameters using an ERMA haematology autoanalyzer, and HMGB1 mRNA expression was determined by polymerase chain reaction (PCR) with GAPDH as the internal control. Total WBC count was highest in Group B (7.5 ± 0.91) and lowest in Group C (4.92 ± 0.51), with extract-treated groups showing intermediate values (6.28 ± 0.46, 5.88 ± 1.17, and 5.98 ± 0.57 for Groups D, E, and F, respectively), though differences were not statistically significant (p > 0.05). Lymphocyte, MID, and granulocyte percentages showed mild variations across groups but without statistical significance. Significant weight gain was observed in Groups D, E, and F at day 28 compared to day 0 (p < 0.05). HMGB1 mRNA expression was significantly elevated in Groups C, D, and E compared to Groups A and B (p < 0.05), indicating activation of immune-related molecular pathways. In conclusion, while I. trichantha did not significantly alter WBC indices in AlCl₃-induced anaemia, its administration was associated with notable upregulation of HMGB1 expression and improved body weight, suggesting potential modulatory and restorative effects that warrant further mechanistic studies.