Posted by admin on Aug 31, 2016 in |
The present study reports the studies directed towards the development of safe and efficient herbal mosquito repellent formulations obtained by mixing hexane extract of Azadirachta indica seeds, hexane/ethanol extract of Vitex negundo leaves, essential oils from Ocimum sanctum leaves, Curcuma longa rhizomes and Citrus sinensis peels and essential oils of Cymbopogon nardus leaves, Eucalyptus globules leaves and Syzygium aromaticum buds purchased from the market. 1 ml of 10% (v/v%) extract / essential oil containing ethanol solutions prepared using each plant extract / essential oil was tested for mosquito repellent activity using arm-in-cage method. A volunteer’s forearm rubbed with 1 ml test solution was exposed to 20 blood-seeking mosquitoes and the number of mosquitoes that aligned or biting the arm was recorded in each minute for five minutes. Analysis was carried out as a triplicate and mosquito repellent activities were found to be in the order: Cymbopogon nardus and Eucalyptus globulus (100%) >Ocimum sanctum (97.94%) > Syzygium aromaticum (95.81%) > Citrus sinensis (93.75%) > Curcuma longa (89.56%) > Vitex negundo...
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Posted by admin on Aug 31, 2016 in |
Background: Widespread use of antibiotics in livestock production in large-scale across the globe has become of public and veterinary health importance because of its implication in antibiotic resistance. Adequate data in this area of research is not readily available in Nigeria; this study was undertaken in view of the possible link between antimicrobial resistance in farm animals and humans. Methods: We collected fifty samples of raw beef from different vendors and slaughter houses within Abuja and screened them for the presence of Listeria monocytogenes and Salmonella typhimurium using standard microbiological methods. The total bacterial and fungal counts, susceptibility of the isolates to different antibiotics and heat sensitivity at 55, 60 and 65ºC for 15 minutes were determined. Results: Our results show that ten isolates of Listeria monocytogenes and eighteen isolates of Salmonella typhimurium were isolated from the samples. The total viable bacteria count range was 1x 109 – 8x 109cfu/g while the fungal count was 1x 103 – 9x 109cfu/g. One (10 %) of the Listeria monocytogenes isolates was...
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Posted by admin on Aug 22, 2016 in |
The aim of the present study is to evaluate the ameliorative effect of curcumin against profenofos induced oxidative damage of renal tissue in mice. Animals were divided into four different groups namely Group-I (control mice; NC), Group-II (NC gavaged 100µl ethanol for 30 days; EC), Group-III (NC gavaged 25mg/kg b.w profenofos for alternate 30 days; PC) and Group-IV (PC treated with 120mg/kg b.w of curcumin daily till next 30 days; CurTPE). Electron micrographs of kidney and level of lipid peroxidase (LPO) were estimated to investigate the therapeutic potential against profenofos treated subjects. Histological analyses of PC showed hemorrhages of blood capillary, edema, necrosis and glomeruli shrinkage but CurTPE showed significant improvement, as compared to PC. Electron microscopic studies also revealed partly destruction of nucleus, mitochondrial membrane, cristae and formation of large vacuoles in cytoplasm but CurTPE showed recovery when compared to PC. It was observed that the damaging effects of profenofos on nucleus, mitochondrial membrane and cristae of renal tissues. It might be due to decrease in lipid concentration...
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Posted by admin on Jul 31, 2016 in |
Objectives: To obtain the data regarding the effects of melatonin on retention of conditioned avoidance response (CAR) and on enhancement of serotonin mediated behavioural responses after electroconvulsive shock (ECS) administration in rats. Methods: Forty rats after training for conditioned avoidance response by using Cook’s pole climbing apparatus were divided in four groups with ten rats in each group and treatment duration was kept for ten days in all the groups. 1) Control group- distilled water (2ml daily) 2) ECS pretreated group- single ECS daily (150 V, 50 Hz sinusoidal with intensity of 210 mA for 0.5 s through crocodile clip ear electrodes) 3) Melatonin group- melatonin suspension (10 mg/kg/day, p.o.) daily 4) Test group- Single ECS daily + melatonin suspension one hour after ECS (10mg/kg/day, p.o.).Then percentage of retention of conditioned avoidance response and number of lithium induced head twitches were calculated in each group on day 11. Data was analysed by chi square and student unpaired t test. Results: Findings show that administration of single ECS daily for...
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Posted by admin on Jul 31, 2016 in |
The main objective of this study is to evaluate the antibacterial activity and phytochemical analysis of Lemon (Citrus limon L.) and Orange (Citrus sinensis L.) Increasing resistance of microorganisms to present day antibiotics arose a way to focus on antimicrobial activity and future prophylactic potential of the lemon and orange peels. In the present study, a total of two extract each of Methanol & Ethanol of Citrus limon and Citrus sinensis were evaluated for their antibacterial activity due to the phytochemicals present in the both the fruit’s peels. All the extracts showed antibacterial activity against all the four bacterial stains. The antibacterial activity of Methanolic and Ethanolic peel extract of C. limon L. and C.sinensis L. were evaluated on bacterial strains Escherichia coli, Pseudomonas aeruginosa, Klebsiella pneumonia and Staphylococcus aureus by recording minimum inhibitory concentration (MIC) by disc diffusion method. Methanolic extract of C. sinensis showed maximum inhibition zone of 17 mm against S....
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