Antioxidant capacity, acute and sub-acute oral toxicity, and anti-inflammatory effects of hydroalcoholic extract.

Martin Ndayambaje, Thierry Habyarimana, Hicham Wahnou, Aimable Nsanzurwimo, Oumaima Chgari, Pacifique Ndishimye, Asmaa Mezty, Mernissi Farida, Mehdi Karkouri, Younes Zaid, Abdallah Naya, Mounia Oudghiri
Author Information
  1. Martin Ndayambaje: Immunology and Biodiversity Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Casablanca, Morocco. ORCID
  2. Thierry Habyarimana: Department of Biomedical Laboratory Sciences, INES-Ruhengeri, Musanze, Rwanda.
  3. Hicham Wahnou: Immunology and Biodiversity Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Casablanca, Morocco. ORCID
  4. Aimable Nsanzurwimo: Department of Biotechnologies, Faculty of Applied Sciences, INES-Ruhengeri, Ruhengeri, Rwanda.
  5. Oumaima Chgari: Immunology and Biodiversity Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Casablanca, Morocco.
  6. Pacifique Ndishimye: Department of Microbiology and Immunology, Faculty of Medicine, Canadian Centre for Vaccinology CCfV, DalhousieUniversity, Halifax, Nova Scotia, Canada. ORCID
  7. Asmaa Mezty: Pathological Laboratory, Ibn Rochd Hospital, Casablanca, Morocco.
  8. Mernissi Farida: Pathological Laboratory, Ibn Rochd Hospital, Casablanca, Morocco.
  9. Mehdi Karkouri: Pathological Laboratory, Ibn Rochd Hospital, Casablanca, Morocco.
  10. Younes Zaid: Immunology and Biodiversity Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Casablanca, Morocco.
  11. Abdallah Naya: Immunology and Biodiversity Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Casablanca, Morocco.
  12. Mounia Oudghiri: Immunology and Biodiversity Laboratory, Faculty of Sciences Ain Chock, Hassan II University of Casablanca, Casablanca, Morocco. ORCID

Abstract

) is a medicinal plant native to sub-Saharan Africa, traditionally used but has limited scientific validation. This study evaluated its antioxidant, toxicity, and anti-inflammatory effects using toxicity tests, paw edema, air pouch models, and vascular permeability assessment. Additionally, qualitative phytochemical analysis and quantitative measurements of total polyphenolic and flavonoid content were conducted. assays revealed significant concentrations of polyphenolic and flavonoid compounds, demonstrating notable radical scavenging activities in DPPH, phosphomolybdate, and FRAP assays. studies demonstrated that extract showed no indications of acute or sub-acute oral toxicity, even when administered at the highest tested dosage of 5000���mg/kg body weight (LD50���>���5000���mg/kg). Toxicity assessments confirmed its safety, showing no fatalities, significant organ damage as evidenced by histopathological analysis, or substantial adverse effects on most hematological and biochemical parameters. The hydroalcoholic extract of demonstrated a notable anti-inflammatory effect that increased with dosage. The inhibition percentage of paw edema by the extract was high at 3���hours, reaching 39.13��������8.78%. Nitric oxide (NO) inhibition at doses of 0.5���g/kg and 1���g/kg was recorded as 36.09��������2.13% and 49.96��������5.41%, respectively. Regarding vascular permeability, extract significantly reduced dye leakage (p���<���0.05 and p���<���0.001), with inhibition percentages of 61.57% and 75.25% at doses of 0.5���g/kg and 1���g/kg, respectively. These findings highlight its promising potential as a treatment for inflammatory disorders. In conclusion, phytochemical analysis identified compounds, which are believed to be responsible for the pharmacological effects observed. Further studies are needed to investigate the chronic consumption of hydroalcoholic extract for long-term isolate bioactive compounds, understand their mechanisms, ensure comprehensive safety profiles for potential drug development, and elucidate their anti-inflammatory mechanism.

Keywords

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