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Bahta T, Karim A, Periasamy G, Gebremedhin G, ur-Rehman N, Bitew H, Hagazi K. Analgesic, Anti-inflammatory and In-vitro Hyaluronidase Inhibitory Properties of the Leaf Extract and Solvent Fractions of Otostegia Fruticosa (Forssk.) Schweinf. ex Penzig. Iran J Pharm Res 2020; 19:218-230. [PMID: 32922482 PMCID: PMC7462514 DOI: 10.22037/ijpr.2019.14657.12569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Otostegia fruticosa is traditionally used to treat tonsillitis, stomach ache, asthma, arthritis, and febrile illness in different parts of Ethiopia and other countries. In this experiment 70% ethanolic crude extract and fractions of the leaf of Otostegia fruticosa (Forssk.) Schweinf. ex Penzig were evaluated for their in-vivo anti-inflammatory and analgesic activities and in-vitro hyaluronidase inhibition properties at different concentrations. Tail immersion, acetic acid induced writhing and carrageenan-induced paw edema model were used to assess the in-vivo analgesic and anti-inflammatory activities, respectively. Swiss albino mice of either sex were randomly divided into five groups of six mice per group and for evaluation of the fractions randomly divided into six groups of six mice per group. The test groups were treated with hydroalcoholic extract of Otostegia fruticosa (O. fruticosa) at doses of 100, 200, and 400 mg/kg. The positive control groups received either pethidine 5 mg/kg or aspirin at 100 mg/kg or 150 mg/kg. The negative control groups were orally given sunflower oil. All the fractions were administered at the dose of 400 mg/kg. In all models, the higher dose (400 mg/kg) of the crude extract and chloroform fraction showed a significant central and peripheral analgesic and anti-inflammatory activities with comparable effects to standards used. The hyaluronidase inhibition assay result showed that the test samples displayed concentration-dependent inhibitory activities. These findings indicate that 70% ethanol extract and organic solvent fractions of O. fruticosa leaves have potential analgesic, anti-inflammatory, and enzyme inhibitory activities.
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Affiliation(s)
- Tiegsti Bahta
- Department of Pharmacognosy, School of Pharmacy, College of Health Sciences, P.O Box 1871, Mekelle University, Mekelle, Ethiopia.
- Department of Pharmacy, College of Health Sciences, Aksum University, P.O Box 298, Aksum, Ethiopia.
| | - Aman Karim
- Department of Pharmacognosy, School of Pharmacy, College of Health Sciences, P.O Box 1871, Mekelle University, Mekelle, Ethiopia.
| | - Gomathi Periasamy
- Department of Pharmacognosy, School of Pharmacy, College of Health Sciences, P.O Box 1871, Mekelle University, Mekelle, Ethiopia.
| | - Gereziher Gebremedhin
- Department of Pharmacognosy, School of Pharmacy, College of Health Sciences, P.O Box 1871, Mekelle University, Mekelle, Ethiopia.
| | - Najeeb ur-Rehman
- Department of Pharmacology, College of Pharmacy, Prince Sattam Bin Abdulaziz University, Al-Kharj 11942, Saudi Arabia.
| | - Helen Bitew
- Department of Pharmacognosy, School of Pharmacy, College of Health Sciences, P.O Box 1871, Mekelle University, Mekelle, Ethiopia.
| | - Kalay Hagazi
- Department of Pharmacy, College of Health Sciences, Aksum University, P.O Box 298, Aksum, Ethiopia.
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