Browsing by Author "Imam A."
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Item Alterations of Kiss 1 receptor, GnRH receptor and nuclear receptors of the hypothalamopituitary-ovarian axis following low dose bisphenol-A exposure in Wistar rats(Korean Association of Anatomists, 2021) Kadir R.E.; Imam A.; Olajide O.J.; Ajao M.S.Bisphenol A is a chemical used primarily as a monomer in the production of polycarbonate plastics and epoxy resins. It is a synthetic chemical compound that is produced in billions of pounds annually, and tagged as an endocrine disruptor. Bisphenol A is a high production synthetic chemical compound that is used in the production of many consumables and equipments of daily consumption and use by man. Growing interest in possible health threats posed by endocrine disrupting chemicals (bisphenol-A inclusive), as these substances are in our environment, food, and many consumer products. Therefore, this study aims to determine bisphenol-A effects on the hypothalamo-pituitary-ovarian axis, and role of melatonin in this regard. Forty-two Wistar rats were bred, grouped into 7, with each group consisting of 6 rats. Experimental groups were administered low and high doses of bisphenol-A and melatonin, starting from day 19, and was continued for 7 weeks orally. They were left to develop into full adults and were sacrificed on day 120±4 days. Blood samples, hypothalamus, pituitary and ovarian tissues were excised for biochemical and tissue antioxidants assays as well as genetic studies. Results show elevated gonadotropin and androgen levels. There was disruption of reactive oxygen species in the ovarian tissues, as well as alterations in the expression of genes that regulate reproduction at the hypothalamus and pituitary levels. Conclusion of early exposure to bisphenol-A is associated with prolonged duration of disruption of reproductive functions in female Wistar rats, which persist long after cessation of the exposure. Melatonin antioxidant effects give some promising outturns against bisphenol-A induced toxicities.Item Castor oil induces morphological changes in endometrium and biochemical parameters in pregnant Wistar rats(Association of Medical Doctors in Academics, 2021) Kadir E.R.; Ibrahim A.; Imam A.; Onigbolabi O.G.; Imam A.A.; Ajao M.S.Background: Misoprostol is a synthetic prostaglandin E1 analogue, used for the management of miscarriages and labour. Castor oil is a natural plant extract that has been reported to have some abortifacient Properties Objectives: This study investigated the labour induction and abortifacient properties of castor oil, as well as possible effects on the electrolytes and hormones that regulate pregnancy, as well as to compare these effects with a standard labour inducing drug misoprostol, in Wistar rats. Methods: The study was conducted out in 2 phases. The pregnant rats were administered varying Castor oil doses of low (12.4ml/kg), medium (18.6ml/kg) and high (24.8ml/kg), which were compared with misoprostol group as well as a control group. All animals were euthanized on gestational day 15 and day 20 respectively for the two phases and blood samples collected via cardiac puncture from the apex of the heart for hormonal assay, electrolyte and kidney function tests. The uterus was also removed for histological processing. Results: The abortifacient effect of castor oil is dose dependent with high dose castor oil group seen to have significantly reduced serum progesterone level (32.8±4.25 and 40.8±0.70 compared with 51.0±2.00 of controls), resulted in weight loss and interference with kidney function (increase in serum potassium while decrease in sodium electrolytes). Castor oil also exhibited labor inducing properties. Conclusion: Castor oil has the potential to induce abortion. This study has demonstrated a possible usage of castor oil in medical induction of labor in rats as it exerted uterotonic principle on the uterus.Item Central Cholinergic Markers and Spatial memory Performance in rats following administration of Rauwolfia Vomitoria and Chlorpromazine(Centre Point Journal (Science Edition). Published by Library and Publication Committee, University of Ilorin, 2015) Ajao M.S.; Imam A.; Adana M.Y.; Kareem S.B.; Alabi A.S.; Olawepo A.; Okesina A.; Kadir R.E.; Oyewopo A.O.The study was designed to compare the effects of Rauwolfia vomitoria and chlorpromazine on metabolic activities, spatial memory performance, central cholinergic markers, oxidative stress markers and neurohistoarchitecture in the brain of adult wistar rats. Twenty five adult male wister rats weighing between 200 - 230 g were divided into five groups (A-E) of five rats each. Group A (control) received 2mls of normal saline daily, Group B received 5mg/kg of chlorpromazine, Group C received 10 mg/kg of chlorpromazine, Group D received 150 mg/kg of R. vomitoria and Group E received 300 mg/kg of R. vomitoria orally. All the medications were given daily for 21 days. Body weights were taken weekly and recorded. A y-maze apparatus was used to assess the spatial memory performance in the rats at days 14 and 21 of the experiment. All the animals were euthanized using 20mg/kgbw of intramuscular ketamine, cardially perfused with 4% paraformaldehyde and the brains were removed, some were homogenised for analysis of central cholinergic markers and others for histological analysis. Low doses of chlorpromazine increase body weight and Rauwolfia vomitoria increase central cholinergic markers. The findings of the study show that R.vomitoria and chlorpromazine exert differential and dosage dependent effects on body weight, central cholinergic neurons and learning performance. The conclusion from the study indicates that R. vomitoria could be a better alternative drug in the treatment of psychosis with lesser metabolic and central nervous system side effects.Item Central cholinergic markers and spatial performance in rats following administration of rauwolfia vomitoria and chlorpromazine(Center Point Journal (Science Edition). The Official Journal of the Library and Publications Committee, University of Ilorin, Ilorin., 2015) Ajao M.S.; Imam A.; Adana M.Y.; Kareem S.B.; Alabi A.S.; Olawepo A.; Okesina A.A.; Kadir R.E.; Oyewopo A.O.The study was designed to compare the effects of Rauwolfia vomitoria and chlorpromazine on metabolic activities, spatial memory performance, central cholinergic markers, oxidative stress markers and neurohistoarchitecture in the brain of adult wistar rats. Twenty five adult male wister rats weighing between 200 - 230 g were divided into five groups (A-E) of five rats each. Group A (control) received 2mls of normal saline daily, Group B received 5mg/kg of chlorpromazine, Group C received 10 mg/kg of chlorpromazine, Group D received 150 mg/kg of R. vomitoria and Group E received 300 mg/kg of R. vomitoria orally. All the medications were given daily for 21 days. Body weights were taken weekly and recorded. A y-maze apparatus was used to assess the spatial memory performance in the rats at days 14 and 21 of the experiment. All the animals were euthanized using 20mg/kgbw of intramuscular ketamine, cardially perfused with 4% paraformaldehyde and the brains were removed, some were homogenised for analysis of central cholinergic markers and others for histological analysis. Low doses of chlorpromazine increase body weight and Rauwolfia vomitoria increase central cholinergic markers. The findings of the study show that R.vomitoria and chlorpromazine exert differential and dosage dependent effects on body weight, central cholinergic neurons and learning performance. The conclusion from the study indicates that R. vomitoria could be a better alternative drug in the treatment of psychosis with lesser metabolic and central nervous system side effects.Item Dominant Traits of the Cheek and Tongue in North Central Nigeria(Anatomical Society of Nigeria, 2025) Kadir E.R.; Yakub A.D.; Obe T.M.; Bada G.N.; Imam A.; Omotoso G.O.Cheek dimples (small indentations on the cheeks) and tongue rolling (the ability to fold the tongue) are dominant genetic traits observed in humans. Investigating these traits provides valuable insights into genetic inheritance patterns and their cultural significance across various populations. This study aimed to assess the prevalence and ecological implications of dominant traits like cheek dimples and tongue rolling in individuals across Kwara, Kogi, and Niger states. A simple random sampling technique was used to select 348 North-Central Nigerians, including 231 males and 117 females aged 16 to 30. Data were collected on the presence or absence of cheek dimples, tongue rolling, and tongue-twisting, and analysed using Statistical Package for Social Science (SPSS). A chi-square test was conducted with a confidence interval of ±0.5 at a 95% confidence level. Results indicated that 33% of participants had dimples, with 57% having dimples on both cheeks, 15% on the right cheek, and 35% on the left. Additionally, 48.3% of participants had parents with dimples. For tongue rolling, 66.7% of participants could roll their tongues, with 52.6%, 46.6%, 41.4%, and 53.7% able to twist their tongues to the right, left, and both directions and shape them into a U, respectively. These findings offer insights into the prevalence and variability of these traits within the population.Item Memory, neurogenic protein and oxidative deficits of frontal cortex following chlorpyrifos/dichlorvos exposure in rats(College of Health Sciences, Osun State University, Nigeria, 2022) Kadir R.E.; Gegele T.A.; Kola-Taiwo I.O.; Oyewole A.L.; Ibrahim A.; Imam A.; Chengetanai S.; Ajao M.S.Objective: The use of xenobiotics to boost agricultural productivity has led to toxic chemicals exposure including organophosphates, causing adverse health outcomes including behavioral and neuronal impairments. This study aimed to evaluate the memory indices, possible oxidative and cholinesterase outturns on the frontal cortices of rats exposed to organophosphates. Methodology: Thirty-two Wistar rats were grouped into four. They received 1ml/kg of Normal, 8.8 mg/kg dichlorvos, 14.9 mg/kg chlopyrifos, and 8.8 mg/kg dichlorvos plus 14.9mg/kg chlorpyrifos respectively. They had training trials in the Y Maze paradigm then spatial working memory assessment. They were euthanized 24hours following exposure and tissues excised for analysis. Results: A marked reduction in metabolic markers, Acetylcholine Esterase (AChE) activity, spatial memory indices and proliferative neuron marker (Ki67) were observed. Also, increase in oxidative stress markers in the frontal cortices of the organophosphates exposed rats. Conclusion: The findings demonstrated neurotoxic effects of organophosphates in rats.Item Morphology and Histoarchitectural of the Cerebellum of Grasscutter (Thyronomys swinderianus) and Hedgehog (Atelerix albiventris)(Centre Point Journal (Science Edition). The official Journal of Library and Publications Committee, University of Ilorin, Ilorin, 2016) Ajao M.S.; Usman I.T.; Abioye A.I.R.; Imam A.; Olawepo A.; Adana M.Y.; Kareem S.B.; Olayaki L.A.The study investigated the general morphology and histoarchitecture of the cerebellar of grasscutter and the Hedgehog. Six grasscuttters and six hedgehogs were used for the study. They were obtained from Jobavic farm in Ilorin, Nigeria. The animals were euthanised, transcardially perfused with 0.9% normal saline and by 4% paraformaldehyde solution. the brains of the animals were removed and the cerebellum detached, weighed and processed for histological purpose and comparism. the findings of this study show a well organised gyration and sulci in the grasscutter compared to the hedgehog. the brain and cerebellar weights of the grasscutter are comparably larger than that of the hedgehog. However the cerebellar cortices and the histoarchitecture of the two animals were similar with little variations in the cellular layers especially the Purkinje cell layer. The study concludes that that though there are no marked histological differences between the cerebellar cortices in the two animals, the observed complex motor functions in the grasscutter may be explained by the complexities in their cerebellar gyration and sulci.Item Protective Effect of Nigella sativa (black caraway) oil on oral dichlorvos induced hematological, renal and nonspecific immune system toxicity in wistar rats(Arak University of Medical Sciences and Iranian Society of Toxicology, 2017) Adana, M. Y.; Ajao M. S.; Sansa A. B.; Imam A.; Ibrahim A.; Alli-Oluwafuyi A.; Kareem S.B.Background: Exposure to environmental toxins such as organophosphates poses a great threat to the health of the public. In this work, we investigated the effects of continuous exposure to dichlorvos (DDVP) on kidney function and hematological parameters, and the possible antidote activity of Nigella sativa oil (NSO). Methods: This research was conducted in 2016, at The Animal Holding and Research Laboratory of Faculty Basic Medical Sciences, University of Ilorin, Ilorin, Nigeria. Twenty-four Wistar rats were randomly divided into four groups, six rats each. The four groups received: 1. phosphate buffer solution as controls, 2. DDVP, 3. DDVP+NSO and 4. NSO alone. After 2 wk of treatment, blood samples were collected and hematological profile (RBC, Hb), erythrocyte indices (MCV, MCH, MCHC, and Plt), renal function parameters (albumin, urea, total protein, chloride, sodium, and potassium ions) and nonspecific immune response (WBC) were measured. Results: Rat exposed to DDVP showed red blood cell count, hemoglobin, packed cell volume, albumin, and total protein levels was reduced from control, while white blood cell count and urea significantly increased as compared to controls, the change in K+ level was not significant. NSO maintained optimal levels of red blood cell count, hemoglobin, packed cell volume, albumin, white blood cell count, and urea, indicative of its protective effect against hemo-, immuno- and nephrotoxicity of DDVP. Conclusion: N. sativa (Black Caraway) oil might be a potential antidote in hematotoxicity, immunosuppression and renal dysfunction in organophosphate poisoning, especially dichlorvos. The protective effect of NSO against dichlorvos toxicity can be attributed to its antioxidant capacity.Item Protective Potential of Thymoquinone on Cyclophosphamide-Induced Hepatotoxicity in Rat(National Association of Specialist Medical Doctors in Academics in Nigeria, 2022) Adana M. Y.; Opabunmi, E. T.; Sunmonu, O. E.; Bello, A. A.; Onigbolabi, O. G.; Imam A.; Ajao, M. S.Background: Cyclophosphamide (CYC) has been known as an anticancer drug with several side effects on various organs such as the liver. In this study, the hepatoprotective properties of thymoquinone (TQ) were tested to decrease the damaging effects of Cyclophosphamide on the liver. Objective: To study and observe the possible ameliorative effect of thymoquinone on cyclophosphamide-induced hepatic toxicity in Wistar rats. Methods: Thirty Wistar male Adolescent (8 – 9 weeks old) rats weighing 70g – 150g were divided into Six groups; 5 rats per group (n=5) and treated orally for 21 consecutive days. Group A served as the control, and the rats in this group received normal saline. Group B was treated with 20mg/kg of cyclophosphamide. Group C was treated with 5mg/kg of Thymoquinone. Group D was treated with 10mg/kg of Thymoquinone. Group E was treated with 20mg/kg of cyclophosphamide and 5m/kg of Thymoquinone while Group F animals were treated with 20mg/kg of Cyclophosphamide and 10mg/kg of Thymoquinone. Results: The Cyclophosphamide treated group showed significant decreases in the body and liver weight, distorted hepatic cytoarchitecture, and reduction in hepatic function whereas co-treatment with TQ, showed protective effects on Cyclophosphamide-induced hepatotoxicity damage. Conclusion: These results suggest that the administration of Thymoquinone may have a protective potential on Cyclophosphamide induced hepatotoxicity.Item Restorative effects of melatonin on bisphenol A-induced interference of gene expression in hypothalamic pituitary axis following early exposure(International Journal of Health Sciences, 2024) Kadir E.R.; Yakub A.D.; Imam A.; Olajide O.J.; Lawal I.A.; Oyewole A.L.; Hussein M.O.; Ojulari L.S.; Ajao M.S.Background: Bisphenol-A is a standard monomer used industrially in manufacturing plastics and epoxy resins, and it is widely used in food preservation and packaging. There is a global increase in its use due to increased demand and the growth in world population. Bisphenol A is an endocrine-disrupting chemical miming the endogenous estradiol hormone. However, due to its exposure to the environment, food and other consumables, its effects on reproductive health have been a growing area of interest. Melatonin regulates sleep-wake cycles and plays essential physiological roles in the body through its antioxidative, anti-cancer and neuroprotective properties. This research aims to ascertain the impact of Bisphenol A on the hypothalamic-pituitary-ovarian axis and determine melatonin's function on possible BPA-induced effects. Methods: Six adult male Wistar rats and 12 adult female Wistar rats of proven fertility were bred and organized into groups. Litters were divided into seven groups, each comprising six rats. These animals were subjected to subcutaneous injections of high and low doses of bisphenol A from postnatal days 0-3, then oral melatonin. The rats were allowed to mature into full-grown adults and euthanized at 120 ±4 days. The serum and hypothalamic-pituitary-ovarian tissues were collected for various assays, histology and genetic studies. Results: Compared to the control groups, groups administered varying doses of bisphenol A showed significant overexpression of estrogen and androgen receptors. Administration of Melatonin showed some reversal and reparative effects on BPA-induced damage of the hypothalamic pituitary ovarian axis. Conclusion: Elevated estrogen receptor levels induced by Bisphenol A altered receptor function, ultimately impairing hormonal cascades that regulate reproductive functions. Melatonin showed some promising reparative effects.