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Articles by W.A. Saka
Total Records ( 4 ) for W.A. Saka
  S.F. Ige , R.E. Akhigbe , A.A. Adewale , J.A. Badmus , S.B. Olaleye , F.O. Ajao , W.A. Saka and O.Q. Owolabi
  This study aims at investigating the effect of pre-treatment, co-treatment and post-treatment with Allium cepa extract, AcE, on cadmium-induced renal toxicity and confirming possible mechanisms by which Allium cepa extract reduce/restore cadmium induces nephrotoxicity. Thirty male Sprague Dawley rats were used. They were divided into 5 groups (n = 6). Group 1 was used as control. Group 2 was intraperitoneally administered 1.5 mL kg-1 BW of 0.3 mg L-1 of cadmium sulphate for 3 days. Group 3 was pretreated with 1.0 mL kg-1 BW of AcE for 8 weeks followed by intraperitoneal administration of 1.5 mL kg-1 b.wt. of 0.3 mg L-1 of cadmium sulphate. Group 4 was co-treated with 1.5 mL kg-1 BW of 0.3 mg L-1 of cadmium sulphate for 3 days and 1.0 mL kg-1 BW of AcE for 8 weeks simultaneously. Group 5 was post-treated with 1.0 mL kg-1 BW of cadmium sulphate for 8 weeks following a 3 day course of 1.5 mL kg-1 BW of 0.3 mg L-1 of cadmium sulphate intraperitoneal administration. All groups were allowed free access to standard rat chow and water throughout the period of experiment. After the experiment period, rats were sacrificed by cervical dislocation and blood sample were obtained via cardiac puncture. The kidneys were also excised. Changes in body and kidney weights were determined. Renal weight index, 24 h urine volume, renal clearance and lipid peroxidation status were also determined. There was no significant change in body and kidney weight and renal weight index in all groups. Renal clearance and 24 h urine volume were significantly reduced in group 2 rats when compared to all groups. Renal clearance was also reduced in group 3 and 5, though this decrease was only significant when compared with the control group. Plasma and tissue SOD activities were significantly increased in group 2. Plasma and tissue MDA levels were significantly increased in group 2, 3 and 5. This study shows that cadmium induces nephrotoxicity by impairing renal functions and stimulating lipid peroxidation. Pre-treatment and post-treatment of AcE in cadmium-treated rats produced mild protective potentials. However, co-treatment with AcE during cadmium administration showed significant antioxidative potentials in preventing cadmium-induced nephrotoxicity.
  W.A. Saka , R.E. Akhigbe , O.S. Ishola , E.A. Ashamu , O.T. Olayemi and G.E. Adeleke
  There is a lack of reliable hepatotherapeutic drugs in modern medicine in the management of alcohol/drug-induced liver damage. Aloe vera extract has been used in folklore medicine for its medicinal values. This study evaluates the hepatotherapeutic activity of aqueous extract of Aloe vera gel in rats. Sprague-Dawley rats were divided into three groups; the negative control, positive control and the extract-treated groups. The negative control received only distilled water daily. The positive control received alcohol, while the extract-treated group received aqueous extract of Aloe vera and alcohol. Hepatotoxicity was induced in the positive control and extract-treated rats with alcohol. The hepatotherapeutic effect was evaluated by performing an assay of the serum total bilirubin, alkaline phosphatase, aspartate and alanine transaminases and liver histopathology. Alanine transaminase activities were comparable in all groups. Alcohol treatment alone significantly (p<0.05) increased total serum bilirubin, alkaline phosphatase and aspartate transaminase activities. Alcohol-induced hepatic dysfunction was abrogated by Aloe vera extract. Histopathological examination revealed that alcohol induced hepatic damage. Aloe vera treatment maintained hepatic architecture similar to that seen in the control. This study shows that aqueous extract of Aloe vera gel is hepatotherapeutic and thus lends credence to the use of the plant in folklore medicine in the management of alcohol-induced hepatic dysfunction.
  W.A. Saka , R.E. Akhigbe , O.M. Azeez and T.R. Babatunde
  High malaria burden has led to the increase use of insecticides in the tropics and subtropics. This study thus aimed at assessing the haematological effects and associated haemostatic alteration of pyrethroid insecticide exposure using experimental animal model. Rats of comparable ages and weights were randomized into four groups (A-D). Rats in groups B, C and D were exposed to pyrethroid insecticide by inhalation for 1, 2 and 3 min daily respectively for three weeks. Rats in group A (control) were not exposed. Haematological and haemostatic variables were comparable in all groups (<0.05). Results from the study show that minimal exposure to pyrethroids is safe.
  W.A. Saka , R.E. Akhigbe , O.S. Oyekunle , O.O. Adedipe and O.A. Akinwande
  Malaria infection is a common cause of morbidity and mortality especially in the tropics and subtropics. This has led to the increased prophylactic use of pyrethroid insecticides and/or Amodiaquine (Aq) to combat the parasitic protozoan infection. The aim of this study was to investigate the comparative haemodynamic effects of pyrethroid insecticide and amodiaquine in rats. Experimental rats were randomly allocated into seven groups of five rats in each. Groups 1, 2 and 3 were exposed to pyrethroid by inhalation for 1, 2 and 3 min, respectively, while groups 4, 5 and 6 were administered Aq per oral at 5, 10 and 15 mg kg-1 b.wt., respectively. Control rats were neither exposed to pyrethroid nor administered Aq. Pyrethroid insecticide led to reduced systolic, diastolic and mean arterial pressures, but increased pulse pressure. Aq treatment did not cause any significant variation in haemodynamic variables. Heart rate was comparable in all groups. Results from the study provide extended safety/toxicity profile for pyrethroid use and Aq treatment. Aq showed no cardiotoxic potential, while pyrethroids have hypotensive effect. It is thus recommended that exposure to pyrethroids should be minimized.
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