Browsing by Author "Adedapo, A. A."

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Ameliorative effect of gallic acid in doxorubicin-induced hepatotoxicity in wistar rats through antioxidant defense system
(Taylor & Francis, 2017-07) Omobowale, T. O.; Oyagbemi, A. A.; Ajufo, U. E.; Adejumobi, A. O.; Ola-Davies, O. E.; Adedapo, A. A.; Yakubu, M. A.
Hepatotoxicity has been found to be one of the main side effects associated with doxorubicin (Dox) administration in cancer therapy. The aim of the present study was to examine the ameliorative effect of gallic acid (GA) in Dox-induced hepatotoxicity. Sixty male Wistar rats of 10 rats per group were used in this study and were randomly divided into 6 experimental groups (A–F). Rats in Group A served as the control group and received distilled water orally for 7 days; Group B was given Dox at 15 mg/kg bodyweight intraperitoneally (IP) on Day 8. Group Cwas given GA at 60 mg/kg body weight orally for 7 days + Dox at 15 mg/kg IP on Day 8. Group D was given GA at 120 mg/kg body weight orally for 7 days +Dox at 15 mg/kg IP on day 8. Rats in Groups E and F were administered GA alone at 60 and 120 mg/kg bodyweight orally for 7 days, respectively. Dox administration led to a significant reduction in hepatic reduced glutathione and nonprotein thiol (NPT) together with significant increase in hepatic malondialdehyde, hydrogen peroxide generation, superoxide dismutase, and catalase activity; hepatic glutathione peroxidase and glutathione-S-transferase activity were significantly inhibited in Dox-treated rats. The serum alanine aminotransferase (ALT), alkaline phosphatase, and total bilirubin concentrations were significantly elevated following Dox administration. Pretreatment with GA ameliorated Dox-induced hepatotoxicity and oxidative stress. The results suggest that GA may offer protection against hepatic damage in Dox cancer chemotherapy.
Ameliorative effect of gallic acid on doxorubicin-induced cardiac dysfunction in rats
(De Gruyter, 2017) Omobowale, T. O.; Oyagbemi, A. A.; Folasire, A. F.; Ajibade, T. O.; Asentiga, E. R.; Adejumobi, O. A.; Ola-Davies, O. E.; Oyetola, O.; James, G.; Adedapo, A. A.; Yakubu, M. A.
Background: The use of doxorubicin (DOX) as an antineoplastic agent has been greatly limited because of the myriad of toxic sequelae associated with it. The aim of this study was to assess the protective effects of gallic acid (GA) on DOX-induced cardiac toxicity in rats. Methods: Sixty male rats (Wistar strain) were used in this study. They were divided into six groups (A–F) each containing 10 animals. Group A was the control. Rats in Groups B, C, and D were treated with DOX at the dosage of 15 mg/kg body weight i.p. Prior to this treatment, rats in Groups C and D had been treated orally with GA for 7 days at the dosage of 60 and 120 mg/kg, respectively. Animals from Groups E and F received only 60 and 120 mg/kg GA, respectively, which were administered orally for 7 days. Results: The exposure of rats to DOX led to a significant (p 0.05) decrease in the cardiac antioxidant defence system and elevation of creatine kinase myocardial band and lactate dehydrogenase. The electrocardiography results showed a significant decrease in heart rate, QRS, and QT-segment prolongation. GA alone improved the antioxidant defence system. Conclusions: The GA pretreatment significantly alleviated GA-associated ECG abnormalities, restored the antioxidant status and prevented cardiac damage.
Anthelmintic efficacy of the aqueous crude extract of Euphorbia hirta Linn in Nigerian dogs
(2005) Adedapo, A. A.; Shabi, O. O.; Adedokun, O. A.
The anthelmintic efficacy of the aqueous crude extract of Euphorbia Itirta Linn was studied in 20 Nigerian dogs that were naturally infected with nematodes. They were randomly divided into 4 groups. A, B. C and D. Groups A and B each comprised 4 dogs while groups C and D comprised 6 dogs each. Group A animals were untreated, while those in group B were treated with proprietary anthelmintic (Mebendazole). Groups C and D animals were treated with aqueous crude extracts of E. hirta using intramuscular and oral routes, respectively. Two weeks after treatment, blood and faecal samples were collected to evaluate haematological values and faecal egg counts, respectively. The procedure was repeated two weeks later. Results of this study show that the aqueous crude extracts of E. hirta after its administration into local dogs produced a significant increase (P< 0.05) in PCV, RBC. l ib cone.. TWBC and lymphocyte counts. The faecal egg counts also showed a remarkable and significant reduction in the levels of the identified helminths. The reduction in faecal egg counts was more pronounced with the extract administered through the oral route when compared with the intramuscular route. The effects of the plant extracts were broad spectrum in action. The phenol compound present in the plant extract could have caused reduction in worm load through this same mechanism that culminates in exhaustion and death ofworms. Since the aqueous crude extract of £. hirta significantly reduced the faecal egg count of the helminths, it could serve as an anthelmintic agent
The effect of aqueous leaf extract of telfaria occidentalis on isolated guinea pig ileum
(Biomedical Communications Group, Ibadan, Nigeria, 2001-01) Dina, O. A.; Saba, A. B.; Akhiromen, I. O.; Adedapo, A. A.; Ola-Davies, O. E.
The effect of aqueous extract of Telfaria occidentalis was studied in vitro on the guinea pig ileum. The extract elicited a dose dependent contractions of the ileum. These responses were blocked by 5 x 10 M mepyramine and 5 x 10-M.atropine, suggesting that it has both histominergic and cholinergic properties. The usefulness of the plant as potent naturally available purgative is presented in this study.
Effect of exposure and withdrawal on lead-induced toxicity and oxidative stress in cardiac tissues of rats
(Informatics Publishing Limited, 2016) Omobowale, T. O.; Oyagbemi, A. A.; Akinrinde, A. S.; Ola-Davies, O. E.; Saba, A. B.; Olopade, J. O.; Adedapo, A. A.
Lead poisoning continues to pose a serious health challenge and more significantly so in developing countries with ineffective waste disposal systems. Recent efforts at solving lead poisoning issues have seen entire towns being resettled from lead-contaminated areas. This study was designed to investigate whether withdrawal of lead exposure results in a resolution of toxic effects of lead in cardiac tissues. Adult male Wistar rats were exposed orally to lead acetate (PbA) at doses of 0.25, 0.5, and 1.0 mg/ml for 6-week duration, after which one-half was sacrificed and the remaining left for a further 6 weeks without lead treatment. Exposure of rats to PbA produced significant decline (P < 0.05) in the activities of antioxidant parameters, including superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione-S-transferase (GST), catalase (CAT), and reduced glutathione (GSH), whereas malondialdehyde (MDA) concentration was significantly elevated. Animals from the withdrawal period exhibited a similar pattern of alterations, with a significant (P < 0.05) reduction in GSH, GPx, and SOD and a significant elevation in MDA and H2O2 concentrations. However, GST activity was elevated, whereas CAT activity remained unaltered in the withdrawal period. The results of this study showed that cardiotoxicity indicated by induction of oxidative stress and reduction in antioxidant parameters failed to resolve upon withdrawal of lead exposure in male rats during the period of study.
Effect of exposure and withdrawal on Lead-induced toxicity and oxidative stress in cardiac tissues of Rats
(Informatics Publishing Limited, 2016) Omobowale, T. O.; Oyagbemi, A. A.; Akinrinde, S. A.; Ola-Davies, O. E.; Saba, A. B.; Olopade, J. O.; Adedapo, A. A.
Lead poisoning continues to pose a serious health challenge and more significantly so in developing countries with ineffective waste disposal systems. Recent efforts at solving lead poisoning issues have seen entire towns being resettled from lead-contaminated areas. This study was designed to investigate whether withdrawal of lead exposure results in a resolution of toxic effects of lead in cardiac tissues. Adult male Wistar rats were exposed orally to lead acetate (PbA) at doses of 0.25, 0.5, and 1.0 mg/ml for 6-week duration, after which one-half was sacrificed and the remaining left for a further 6 weeks without lead treatment. Exposure of rats to PbA produced significant decline (P < 0.05) in the activities of antioxidant parameters, including superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione-S-transferase (GST), catalase (CAT), and reduced glutathione (GSH), whereas malondialdehyde (MDA) concentration was significantly elevated. Animals from the withdrawal period exhibited a similar pattern of alterations, with a significant (P < 0.05) reduction in GSH, GPx, and SOD and a significant elevation in MDA and H2 O2 concentrations. However, GST activity was elevated, whereas CAT activity remained unaltered in the withdrawal period. The results of this study showed that cardiotoxicity indicated by induction of oxidative stress and reduction in antioxidant parameters failed to resolve upon withdrawal of lead exposure in male rats during the period of study.
Effect of exposure and withdrawal on lead-induced toxicity and oxidative stress in cardiac tissues of rats
(Informatics Publishing Limited, 2016) Omobowale, T. O.; Oyagbemi, A. A.; Akinrinde, A. S.; Ola-Davies, O. E.; Saba, A. B.; Olopade, J. O.; Adedapo, A. A.
Lead poisoning continues to pose a serious health challenge and more significantly so in developing countries with ineffective waste disposal systems. Recent efforts at solving lead poisoning issues have seen entire towns being resettled from lead-contaminated areas. This study was designed to investigate whether withdrawal of lead exposure results in a resolution of toxic effects of lead in cardiac tissues. Adult male Wistar rats were exposed orally to lead acetate (PbA) at doses of 0.25, 0.5, and 1.0 mg/ml for 6-week duration, after which one-half was sacrificed and the remaining left for a further 6 weeks without lead treatment. Exposure of rats to PbA produced significant decline (P < 0.05) in the activities of antioxidant parameters, including superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione-S-transferase (GST), catalase (CAT), and reduced glutathione (GSH), whereas malondialdehyde (MDA) concentration was significantly elevated. Animals from the withdrawal period exhibited a similar pattern of alterations, with a significant (P < 0.05) reduction in GSH, GPx, and SOD and a significant elevation in MDA and H2O2 concentrations. However, GST activity was elevated, whereas CAT activity remained unaltered in the withdrawal period. The results of this study showed that cardiotoxicity indicated by induction of oxidative stress and reduction in antioxidant parameters failed to resolve upon withdrawal of lead exposure in male rats during the period of study.
Glycine exerts renal antioxidant effects and restores hemodynamic alterations in Rats treated with Diclofenac Sodium: Roles of renal Angiotensin Converting Enzyme, Angiotensin II Receptor and Mineralocortocoid Receptor
(Biomedical Communications Group, Ibadan, 2023) Akinrinde, A. S.; Ajibade, T. O.; Adetona, M. O.; Oyagbemi, A. A.; Adedapo, A. D. A.; Larbie, C.; Omobowale, T. O.; Ola-Davies, O. E.; Adedapo, A. A.; Saba, A. B.; Oguntibeju, O. O.; Yakubu, M. A.
Diclofenac (DIC) is known to alter renal function in the form of hemodynamically-mediated acute renal failure. This study evaluated the protective role of the amino acid, glycine (Gly) on nephrotoxicity and acute hemodynamic alterations induced by DIC (9 mg/kg) in male Wistar rats. The rats were divided into four groups (n=7/group) including Group A (control); Group B (DIC-treated), Groups C (DIC + Gly1, 250 mg/kg) and Group D (DIC + Gly2 500 mg/kg). Systolic (SBP), diastolic (DBP) and mean arterial (MAP) blood pressures were significantly (p<0.05) reduced in rats treated with DIC alone, compared to control. Kidneys from DIC-treated rats showed altered histology with significantly (p<0.05) increased hydrogen peroxide (H2O2), malondialdehyde (MDA) and protein carbonyl contents, but decreased glutathione (GSH) glutathione peroxidase (GPx), glutathione S-transferase (GST) and superoxide dismutase (SOD) activities. Immunohistochemistry revealed down-regulation of renal angiotensin converting enzyme (ACE), but increased expressions of angiotensin type II receptor (AT2R) and mineralocorticoid receptor (MR) in DIC-treated rats. However, pre-treatment with Gly reversed most of the aforementioned effects of DIC. The present results suggest that oral glycine protected kidney tissues and restored DIC-induced hemodynamic changes by modifying renal expression of the renin-angiotensin-mineralocortocoid pathway and/or renal oxidative stress.
Haematinic potencies of the aqueous crude extracts of ficus mucoso and senna occidentalis in rabbits
(2009) Adedapo, A. A.; Ayodele, A. E.; Ogunshe, A. A. O.; Oyeyemi, M.O.; Idowu, S. O.; Ola -Davies, O. E.; Ademola, I. O.
A total of 20 domestic rabbits divided into 4 groups of 5 animals per group were used in this study to assess the haematinic potencies of the aqueous crude extracts of Ficus mucoso and Senna occidentalis and this was then compared with that of a proprietary haematinic, Haematopan B12®. Group A animals (control) were not bled but those in groups B, C and D were bled to induce anaemia. Group B animals were treated with Haematopan B12®, a commercially prepared haematinic, and groups C and D were treated with the aqueous crude extracts of Senna occidentalis (Linn) Link and Ficus mucoso Welw. ex Ficalho respectively. The post-haemorrhage treatment haematologic values were obtained at given intervals (7 days) and compared with the pre-haemorrhagic values earlier obtained. The study showed that all the experimental animals showed accelerated recovery since these animals had excellent response in terms of white blood cell (WBC) and its differentials, red blood cell (RBC) count, packed cell volume (PCV) and haemoglobin (Hb) concentration. Thus the extracts of Ficus mucoso and Senna occidentalis have comparative haematinic potencies as Haematopan B12®.
Haematinic potencies of the aqueous crude extracts of ficus mucoso and senna occidentalis in rabbits
(Ibadan Biomedical Communications Group, 2009) Adedapo, A. A.; Ayodele, A. E.; Ogunshe, A. A. O.; Oyeyemi, M. O.; Idowu, S. O.; Ola-Davies, O. E.; Ademola, I. O.
A total of 20 domestic rabbits divided into 4 groups of 5 animals per group were used in this study to assess the haematinic potencies of the aqueous crude extracts of Ficus mucoso and Senna occidentalis and this was then compared with that of a proprietary haematinic, Haematopan B12®. Group A animals (control) were not bled but those in groups B, C and D were bled to induce anaemia. Group B animals were treated with Haematopan B12®, a commercially prepared haematinic, and groups C and D were treated with the aqueous crude extracts of Senna occidentalis (Linn) Link and Ficus mucoso Welw. ex Ficalho respectively. The post-haemorrhage treatment haematologic values were obtained at given intervals (7 days) and compared with the pre-haemorrhagic values earlier obtained. The study showed that all the experimental animals showed accelerated recovery since these animals had excellent response in terms of white blood cell (WBC) and its differentials, red blood cell (RBC) count, packed cell volume (PCV) and haemoglobin (Hb) concentration. Thus the extracts of Ficus mucoso and Senna occidentalis have comparative haematinic potencies as Haematopan B12®
Luteolin normalizes Blood Pressure via its antioxidant activity and down-regulation of Renal Angiotensin II receptor and Mineralocorticoid receptor expressions in rats co-exposed to Diclofenac and Sodium Fluoride
(Physiological Society of Nigeria, 2022) Ajibade, T. O.; Akinrinde, A. S.; Adetona, M. O.; Adedapo, A. D. A.; Oyagbemi, A. A.; Larbie, C.; Omobowale, T. O.; Ola-Davies, O. E.; Saba, A. B.; Adedapo, A. A.; Oguntibeju, O. O.; Yakubu, M. A.
This study was designed to investigate the modulatory role of Luteolin (Lut), a flavonoid phytochemical, on haemodynamic parameters and the potential mechanisms involving renal Angiotensin II (AT2R) and Mineralocorticoid (MCR) receptors in renal toxicity induced by co-exposure to Diclofenac (Dcf) and sodium fluoride (NaF) in rats. Male Wistar rats were administered with either vehicle (control), Dcf only (9 mg/kg orally) or concurrently with NaF (300 ppm in drinking water). Other groups were treated with LutA (100 mg/kg) or LutB (200 mg/kg) along with Dcf and NaF exposures. All treatments lasted 8 days, following which blood pressure indices were measured using tail-cuff plethysmography. Renal expressions of AT2R and MCR were studied with immunohistochemistry, while biomarkers of oxidative and antioxidant status were also measured in the kidneys. Systolic, diastolic and mean arterial pressures were significantly (p<0.05) reduced in Dcf-treated rats, compared to control values. However, co-treatment with NaF or Lut restored these parameters. While the expression of AT2R and MCR was high in the Dcf and Dcf+NaF groups, treatment with Lut caused obvious reduction in the renal expression of these receptors. Increased lipid peroxidation (Malondialdehyde) and protein oxidation (protein carbonyls)with a lowering of reduced glutathione levels contributed to the renal toxicity of Dcf, and these were significantly ameliorated in Lut-treated rats. In conclusion, the preservation of haemodynamic indices by Luteolin in the experimental rats was probably mediated by mechanisms involving down-regulation of renal expressions of AT2R and MCR, reduction of oxidative stress and an improvement of renal antioxidant status.
Luteolin supplementation ameliorates cobalt-induced oxidative stress and inflammation by suppressing NF-кB/Kim-1 signaling in the heart and kidney of rats
(Elsevier B.V., 2020) Oyagbemi, A. A.; Akinrinde, A. S.; Adebiyi, O. E.; Jarikre, T. A.; Omobowale, T. O.; Ola-Davies, O. E.; Saba, A. B.; Emikpe, B. O.; Adedapo, A. A.
Cobalt-induced cardiomyopathy and renal toxicity have been reported in workers in processing plants, hard metal industries, diamond polishing and manufacture of ceramics. This study was designed to investigate the influence of Luteolin supplementation on cobalt-induced cardiac and renal toxicity in rats. Exposure of rats to cobalt chloride (CoCl2) alone caused significant (p < 0.05) increases in cardiac and renal H2O2, malondialdehyde (MDA) and nitric oxide (NO), along with increased serum myeloperoxidase (MPO) activity. In addition, there were significant (p < 0.05) reductions in cardiac and renal glutathione peroxidase (GPx), glutathione S-transferase (GST) and reduced glutathione (GSH). CoCl2 induced higher immuno-staining of nuclear factor kappa beta (NF-κB) in the heart and kidneys, and the kidney injury molecule (Kim-1) in the kidneys. Treatment with Luteolin or Gallic acid produced significant reversal of the oxidative stress parameters with reductions in NF-κB and Kim-1 expressions, leading to suppression of histopathological lesions observed in the tissues.
Phytochemical profiling, antioxidant activities and essential oil constituents of Andrographis paniculata
(Faculty of Veterinary Medicine, University of Ibadan, Nigeria, 2018) Adesye, B. Q.; Akinrlnde, A. S.; Oyagbemi, A. A.; Omobowale, T. O.; Afofayan, A. J.; Adedapo, A. A.
Oxidative stress is involved in the pathogenesis of various diseases which lead to urgent need to investigate new, safe and effective source of antioxidant agents. This research proposed to investigate in-vitro and phytochemical constituent of the plant Ancirographis paniculatei using phytochemical analysis, GC/MS, DPPH, ABTS, FRAP and NO. Phytochemical analysis of Anclrographis paniculata revealed the presence of tannins, total fiavonoids, total phenol, total flavonols, and total proanthocyanidins. GC/MS analysis of essential oil of AP identified one major compound name benzencpropanoic acid clucked at 3.296 retention time and 0.74 area percentage. The ferric reducing potential of the extracts was concentration dependent and significantly different from that of rutin and vitamin E. The% inhibition of ABTS by the ethanol leaf extract of Anclrographis paniculata was concentration dependent and compared favourably well with the rutin and vitamin E, in DPPH scavenging assays, the IC50 value of the ethanol leaf extract of Andrographis paniculata was < 0.025 mg/ml, while IC50 of rutin and Vitamin E were < 0.025 mg/ml and 0.68mg/ml. Nitric oxide IC50, for extract is 1,05mg/ml, Vitamin E is 1.2 mg/ml, and rutin is < 0.025 mg/ml. The present study showed high level of radical scavenging activity by ethanol leaf .extract of Andrographis paniculata with higher antioxidant activities than Vitamin E but less than that of rutin. This show that Andrographis paniculata has antioxidant properties and the plant epuid be used in the prevention and treatment of diseases associated with oxidative stress.
Phytochemical, acute toxicity, analgesic, in vitro antioxidant studies and GC-MS investigation of essential oil of the methanol leaf extract of Momordica charantia
(Sciencedomain International, 2017) Ofuegbe, S. O.; Akinrinde, A. S.; Oyagbemi, A. A.; Omobowale, T. O.; Yakubu, M. A.; Adedapo, A. A.
Medicinal plants have bioactive compounds which play an important role in the healing of various diseases. They are the best sources for chemical ingredients, antimicrobial and antioxidant agents for cure of different diseases. Most medicinal plants possess pharmacological activities (anti-inflammatory, antidiabetic, antioxidant, antibacterial, antifungal etc.) due to the presence of these phytochemicals in them. In this study, we intend to conduct qualitative phytochemical screening and to quantitatively evaluate the total phenol, flavonols, tannins, proanthocyanidins and flavonoids contents of the plant, Mormodica charantia. The acute toxicity studies of the methanol leaf extract of M. charantia on mice was conducted to evaluate how safe the plant is in relation to dosage, and this is intended to establish the safety of the plant in mice with reference to OECD guidelines. Furthermore, the analgesic activity of the methanol leaf extract of M. charantia and the free radical scavenging activities of the plant in vitro were demonstrated using various standard procedures. We also intend to profile the major compounds present in the essential oil of the plant understudied using Gas Chromatography-Mass Spectrometry Analysis. Summarily, this study was aimed to investigate the phytochemical screening, acute toxicity, analgesic, in vitro antioxidant, as well as the chemical constituents in the essential oil of the methanol leaf extract of M. charantia.
Phytochemical, acute toxicity, analgesic, in vitro antioxidant studies and GC-MS investigation of Essential Oil of the Methanol Leaf Extract of Momordica charantia
(Sciencedomain International, 2017) Ofuegbe, S. O.; Akinrinde, A. S.; Oyagbemi, A. A.; Omobowale, T. O.; Yakubu, M. A.; Adedapo, A. A.
Medicinal plants have bioactive compounds which play an important role in the healing of various diseases. They are the best sources for chemical ingredients, antimicrobial and antioxidant agents for cure of different diseases. Most medicinal plants possess pharmacological activities (anti-inflammatory, antidiabetic, antioxidant, antibacterial, antifungal etc.) due to the presence of these phytochemicals in them. In this study, we intend to conduct qualitative phytochemical screening and to quantitatively evaluate the total phenol, flavonols, tannins, proanthocyanidins and flavonoids contents of the plant, Mormodica charantia. The acute toxicity studies of the methanol leaf extract of M. charantia on mice was conducted to evaluate how safe the plant is in relation to dosage, and this is intended to establish the safety of the plant in mice with reference to OECD guidelines. Furthermore, the analgesic activity of the methanol leaf extract of M. charantia and the free radical scavenging activities of the plant in vitro were demonstrated using various standard procedures. We also intend to profile the major compounds present in the essential oil of the plant understudied using Gas Chromatography-Mass Spectrometry Analysis. Summarily, this study was aimed to investigate the phytochemical screening, acute toxicity, analgesic, in vitro antioxidant, as well as the chemical constituents in the essential oil of the methanol leaf extract of M. charantia.
Phytochemical, acute toxicity, analgesic, in vitro antioxidant studies and GC-MS investigation of Essential Oil of the Methanol Leaf Extract of Momordica charantia
(Sciencedomain International, 2017) Ofuegbe, S. O.; Akinrinde, A. S.; Oyagbemi, A. A.; Omobowale, T. O.; Yakubu, M. A.; Adedapo, A. A.
Medicinal plants have bioactive compounds which play an important role in the healing of various diseases. They are the best sources for chemical ingredients, antimicrobial and antioxidant agents for cure of different diseases. Most medicinal plants possess pharmacological activities (anti-inflammatory, antidiabetic, antioxidant, antibacterial, antifungal etc.) due to the presence of these phytochemicals in them. In this study, we intend to conduct qualitative phytochemical screening and to quantitatively evaluate the total phenol, flavonols, tannins, proanthocyanidins and flavonoids contents of the plant, Mormodica charantia. The acute toxicity studies of the methanol leaf extract of M. charantia on mice was conducted to evaluate how safe the plant is in relation to dosage, and this is intended to establish the safety of the plant in mice with reference to OECD guidelines. Furthermore, the analgesic activity of the methanol leaf extract of M. charantia and the free radical scavenging activities of the plant in vitro were demonstrated using various standard procedures. We also intend to profile the major compounds present in the essential oil of the plant understudied using Gas Chromatography-Mass Spectrometry Analysis. Summarily, this study was aimed to investigate the phytochemical screening, acute toxicity, analgesic, in vitro antioxidant, as well as the chemical constituents in the essential oil of the methanol leaf extract of M. charantia.
Phytochemical, analgesic, in-vitro anti-oxidant and GC-MS analysis of Vernonia amygdalina leaves
(Ibadan Biomedical Communications Group, 2018) Adeoye, A. T.; Akinrinde, A. S.; Oyagbemi, A. A.; Omobowale, T. O.; Adedapo, A. D. A.; Ayodele, E. A.; Yakubu, M. A.; Adedapo, A. A.
The powdered leaf of Vernonia amygdalina was subjected to phytochemical screening, and in vitro antioxidant studies. The volatile oil of the leaves of the plant was also screened to determine the constituents. Analgesic tests using acetic acid induced writhing and paw licking (formalin) test in mice were also carried out. The in vitro antioxidant assay used include FRAP, ABTS, DPPH, and NO assay and then compared these with standards (Vitamin E and Rutin). Results showed the presence of saponins and tannins strongly, while alkaloids, flavonoids, anthraquinones and terpenoids were present in little quantities. On the other hand however, cardiac glycosides were absent in the plant. In the FRAP assay method, the absorbance of Vernonia amygdalina was found to be dose dependent with the maximum absorbance of 0.641nm at 0.5mg/ml which was significantly higher than that of rutin (0.56nm) and lower than that of Vitamin E (0.77nm). The ABTS radical scavenging activity of Vernonia amygdalina showed a dose dependent increase in the inhibition of the ABTS radical scavenging activity (91.93, 95.42, 99.24, 99.34 and 99.53% at 0.025, 0.05, 0.1, 0.2 and 0.5mg/ml respectively). This was comparable to that of rutin. The extract and the reference antioxidant (Rutin and Vitamin E) promoted an inhibition of DPPH radical at all concentrations tested in this study. Vernonia amygdalina showed a relatively stable effect in inhibiting the DPPH radical at all doses tested reaching 74.76%, 69.11% and 86.90% for Vernonia amygdalina, Vitamin E and Rutin respectively at the highest concentration. Vernonia amygdalina showed a dose dependent increase in the inhibition of the nitric oxide radical. The major compounds obtained from the GC-MS analysis of the essential of Vernonia amygdalina in this study were caryophyllene oxide (23.48%), phytol (22.92%), 2-Pentadecanone, 6,10,14-trimethyl (12.98%), hexadecanoic acid ethyl ester (12.24%), Oxirane, heptadecyl (12.11%), benzaldehyde (4.97%), benzeneacetaldehyde (5.83%), and trans-beta-ionone (5.47%). The methanol leaf extract of Vernonia amygdalina inhibited the acetic acid induced writhing in a manner comparable with the standard drug used in this study. The paw licking (formalin) test produces a distinct biphasic response to pain stimulus and the extract caused a dose dependent decrease in the inhibition of pain in both phases of the formalin paw lick test.
Phytochemical, analgesic, in-Vitro anti-oxidant and GC-MS analysis of Vernonia amygdalina leaves
(Biomedical Communications Group, 2018) Adeoye, A. T.; Akinrinde, A. S.; Oyagbemi, A. A.; Omobowale, T. O.; Adedapo, A. D. A.; Ayodele, E. A.; Yakubu, M. A.; Adedapo, A. A.
The powdered leaf of Vernonia amygdalina was subjected to phytochemical screening, and in vitro antioxidant studies. The volatile oil of the leaves of the plant was also screened to determine the constituents. Analgesic tests using acetic acid induced writhing and paw licking (formalin) test in mice were also carried out. The in vitro antioxidant assay used include FRAP, ABTS, DPPH, and NO assay and then compared these with standards (Vitamin E and Rutin). Results showed the presence of saponins and tannins strongly, while alkaloids, flavonoids, anthraquinones and terpenoids were present in little quantities. On the other hand however, cardiac glycosides were absent in the plant. In the FRAP assay method, the absorbance of Vernonia amygdalina was found to be dose dependent with the maximum absorbance of 0.641nm at 0.5mg/ml which was significantly higher than that of rutin (0.56nm) and lower than that of Vitamin E (0.77nm). The ABTS radical scavenging activity of Vernonia amygdalina showed a dose dependent increase in the inhibition of the ABTS radical scavenging activity (91.93, 95.42, 99.24, 99.34 and 99.53% at 0.025, 0.05, 0.1, 0.2 and 0.5mg/ml respectively). This was comparable to that of rutin. The extract and the reference antioxidant (Rutin and Vitamin E) promoted an inhibition of DPPH radical at all concentrations tested in this study. Vernonia amygdalina showed a relatively stable effect in inhibiting the DPPH radical at all doses tested reaching 74.76%, 69.11% and 86.90% for Vernonia amygdalina, Vitamin E and Rutin respectively at the highest concentration. Vernonia amygdalina showed a dose dependent increase in the inhibition of the nitric oxide radical. The major compounds obtained from the GC-MS analysis of the essential of Vernonia amygdalina in this study were caryophyllene oxide (23.48%), phytol (22.92%), 2-Pentadecanone, 6,10,14-trimethyl (12.98%), hexadecanoic acid ethyl ester (12.24%), Oxirane, heptadecyl (12.11%), benzaldehyde (4.97%), benzeneacetaldehyde (5.83%), and trans-beta-ionone (5.47%). The methanol leaf extract of Vernonia amygdalina inhibited the acetic acid induced writhing in a manner comparable with the standard drug used in this study. The paw licking (formalin) test produces a distinct biphasic response to pain stimulus and the extract caused a dose dependent decrease in the inhibition of pain in both phases of the formalin paw lick test.
Phytochkmical profiling antioxidant activities and essential oil, constituents of Androgkaphis Paniculata
(Faculty of Veterinary Medicine, University of Ibadan, 2018) Adeoye, B. Q.; Akinrinde, A. S.; Oyagbemi, A. A.; Omobowale, T. O.; Afolayan, A. J.; Adedapo, A. A.
Oxidative stress is involved in the pathogenesis of various diseases which lead to urgent- need to investigate new, safe and effective source of antioxidant agents. This research proposed to investigate in-vitro and phytochemical constituent of the plant Ancirographis paniculatei using phytochemical analysis, GC/MS, DPPH, ABTS, FRAP and NO. Phytochemica! analysis of Anclrographis paniculata revealed the presence of tannins, total fiavonoids, total phenol, total flavonols, and total proanthocyanidins. GC/MS analysis of essential oil of AP identified one major compound name benzencpropanoic acid clucked at 3.296 retention time and 0,74 area percentage. The ferric reducing potential of the extracts was concentration dependent and significantly different from that of rutin and vitamin E. The% inhibition ofABTS by the ethanol leaf extract o?A nclrographis paniculata was concentration dependent and compared favourably well with the rutin and vitamin E, in DPPH scavenging assays, the ICy50 value of the ethanol leaf extract of Andrographis paniculata was < 0.025 mg/ml, while IC50 of rutin and Vitamin E were < 0.025 mg/ml and 0.68mg/ml. Nitric oxide ICS, for extract is 1,05mg/ml, Vitamin E is 1.2 mg/ml, and rutin is < 0.025 mg/ml. The present study showed high level of radical scavenging activity by ethanol leaf .extract of Andrographis paniculata with higher antioxidant activities than Vitamin E but less than that of rutin. This show that Andrographis paniculata has antioxidant properties and the plant could be used in the prevention and treatment of diseases associated with oxidative stress.