Browsing by Author "Salawu, K. M."
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Item Anti-inflammatory and Diuretic Activities of Moringa oleifera Lam. (Moringaceae) and Andrographis paniculata Burm. f. (Acanthaceae) Co-administered in Rats.(Journal of Pharmaceutical Research, Development and Practice, 2016-06) Lawal, B. A.; Salawu, K. M.; Agunu, A.; Adedoyin, I. R.; Abdulganiy, G. O.; Ayanniyi, R. O.Moringa oleifera Lam. ( Moringaceae) and Andrographis paniculata Burm.f. ( Acanthaceae) are commonly used medicine plants in severalparts of Nigeria . The leaf extract of M. oleifera (MO) has been extensively studied and used traditionally for its anti-inflammatory anddiuretic activities. Because of the wide medicinal benefits of these plants they are often used together in polyherbal formulation(s). This study was aimed at evaluating some biological activities of MO and A. paniculata (AP) administered singly and in combination. Thisaim was pursued using in vivo acute toxicity study, formalin induced rat paw edema and diuretic assay. The leaf extracts MO and AP were observed to be safe up to 5000 mg/kg body weight. The extract of MO and AP at 100 mg/kg body weightdisplayed 69.44 and 10.10 % inhibition of rat paw edema respectively, while the combination of extract elicited weaker inhibition (11.29 %)of paw volume. The extract of MO and AP when administered singly and in various combination at different doses elicited similar diureticactivity compared to the hydrochlorothiazide except at a combined dose of MO 50 mg/kg + AP 50 mg/kg, where the urine volume(1.27±0.60 mL) was lower compared to the negative control (1.62±0.52 mL). The extracts of MO and AP were observed to be relatively safe. The extract of MO had significant anti-inflammatory and diuretic activitiescompared to AP . However the combination of both plants extracts led to inhibition of the anti-inflammatory and diuretic activities of MO.Item Evaluation of heavy metal impurities in metformin tablet brands marketed in Ilorin, Nigeria(Faculty of Pharmaceutical Sciences, University of Ilorin, 2022-01) Bamidele, O. D.; Eniayewu, O. I.; Adegbola, A. J.; Salawu, K. M.; Njinga, N. S.; Abdullahi, S. T.The safety and quality of pharmaceutical products are important considerations for optimal therapeutic outcomes. Periodic assessment of heavy metals impurities in pharmaceutical products used for long- term treatment of chronic diseases is important to safeguard the health and well-being of patients. This study investigated the levels of manganese (Mn), copper (Cu), zinc (Zn), cadmium (Cd) and lead (Pb) in brands of metformin tablets commonly prescribed in Ilorin, Nigeria, for the management of diabetes. Five brands of commonly prescribed metformin tablets were randomly purchased from pharmacies in Ilorin, North-central Nigeria. Metal concentrations in the acid digested samples were profiled using Atomic Absorption Spectrophotometry (AAS) method. Method validation results showed excellent linearity (r2=0.9921(Mn), 0.9995 (Cu), 0.9998 (Zn), 0.9996(Cd), 0.9913(Pb)), with limits of detection (0.001, 0.001, 0.002, 0.002 and 0.025 mg/L for Mn, Cu, Zn, Cd and Pb respectively) and limits of quantification (0.003, 0.003, 0.006, 0.006 and 0.076 mg/L for Mn, Cu, Zn, Cd and Pb respectively) in the concentration ranges of 2– 10, 0.2–1.6, 0.2–1.6, 1–4 and 1–4 mg/L for Mn, Cu, Zn, Cd and Pb respectively. Mn, Cu, and Zn were detectable in varying concentrations in all the five brands of metformin evaluated in this study while none of the brands contained Cd and Pb at detectable levels. The levels of Mn, Cu and Zn ranged between 0.031-0.062, 0.085-0.112 and 0.040-0.130 mg/mL respectively across the brands. The highest concentrations of Mn, Cu and Zn were 0.062(0.001), 0.112(0.001) and 0.130(0.001) mg/L respectively. Similarly, maximum daily ingestible amounts for Mn, Cu and Zn ranges between 0.84-1.75, 2.17-3.03 and 6.12-20.7 μg/day respectively, which were below permissible daily exposure (PDE). These results indicate that all the metformin brands evaluated could be safely administered orally to the patients without fear of any of the metal’s toxicity consequences.Item Phytochemical, Antioxidant and Antimicrobial activities of the Hydroalcoholic Extract of the Roots of Adenodolichos paniculatus against selected Pathogenic Microorganisms(Pharmaceutical Society of Kenya, 2022) Njinga, N. S.; Lawal, B. A.; David, S. M.; Eniayewu, I. O.; Bello, N.; Shittu, A. O.; Kolawole, A. J.; Ene, O. C.; Bamidele, O. D.; Saka, K. L.; Salawu, K. M.; Odunola, R. O.Drugs derived from natural sources present a significant alternative therapy in the management of infectious diseases. The increasing resistance of pathogenic microorganisms to orthodox medicine has necessitated the search for alternative means of treatment. This study is aimed at evaluating the phytochemicals,antioxidant and antimicrobial activities of the hydroalcoholic extract of the roots of Adenodolichos paniculatus against selected pathogenic microorganisms. The phytochemical constituents were done using standard procedures and the antioxidant activity was evaluated using 2,2-diphenyl-2-picryl-hydrazyl. Antimicrobial activity was investigated using fourteen pathogenic organisms, which included five gram-positive and seven gram-negative bacterial strains and three fungal strains using Agar diffusion method. The zones of inhibition of the extract against the test organisms, their minimum inhibitory concentrations (MIC) as well as the minimum bactericidal/fungicidal concentrations (MBC/MFC) were determined. The extract was found to contain steroids, flavonoids, alkaloids and saponins. The total phenols, flavonoids, alkaloids and saponins were found to be 1.427±0.02 mg/g gallic acid, 0.4239±0.19 mg/g quercetin, 5% and 75.23% respectively. The antioxidant activity at concentrations of 7.53 and 15.51 µg/mL were not statistically different from that of vitamin C (P<0.05) and the IC50 found to be 4.906 µg/mL. The zones of inhibition ranged from 22 – 47 mm while the MIC and MBC/MFC was observed to be 5 to 10 mg/mL, and 10 to 40 mg/mL respectively. The availability of phytochemicals with remarkable antioxidant activities and the demonstration of antimicrobial activity against gram-positive, gram-negative bacteria and fungi strains show that A. paniculata root is a potential source for the production of antioxidants as well as antimicrobial drugs