Browsing by Author "Sulaimon, FA"

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    Kolaviron ameliorates histomorphological changes associated with cuprizone-induced cerebellar damage.
    (The Journal of Anatomical Sciences,, 2017) Omotoso, Gabriel Olaiya; Olajide, O J; Gbadamosi, IT; Sulaimon, FA; Oladimeji, JO
    Cuprizone is a copper chelator and a drug of choice in studing demyelination/remyelination in the central nervous system. This study assessed the effect of Kolaviron, on cuprizone-induced damage to the cerebellum of Wistar rat. Twenty-four adult male Wistar rats were grouped into 5: Group A received 0.5 ml of normal saline for 6 weeks; Group B received 0.5 ml of corn oil for 6 weeks; Group C was treated with 0.2% of cuprizone for 3 weeks followed by treatment with 200 mg/kg of Kolaviron for another 3 weeks; Group D received 200 mg/kg Kolaviron for 3 weeks followed by 0.2% cuprizone from another 3 weeks; while Group E received 0.2% cuprizone for 6 weeks. Meanwhile, 0.5 ml of corn oil was used as a vehicle for Kolaviron. The body and brain weight of the rats showed significant decrease in all treated groups when compared to the control groups. Histological demonstration showed varying degrees of architectural distortions, including depletion of Nissl bodies, disruption of cortical cell layers and depletion of myelin, which were more pronounced in the cerebellar cortex of cuprizone-treated rats. Kolaviron offered mild cytoprotection to the cerebellar histomorphology of cuprizone-treated rats. Further studies would ascertain the effectiveness of Kolaviron in mitigating cerebellar lesions in well-established demyelination.
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    Kolaviron Protects the brain in Cuprizone-induced Model of Experimental Multiple Sclerosis via enhancement of intrinsic antioxidant mechanisms: Possible Therapeutic Applications?
    (Pathophysiology, 2018) Omotoso, Gabriel Olaiya; Ukwubile, II; Arietarhire, L; Sulaimon, FA; Gbadamosi, IT
    Multiple sclerosis is a demyelinating condition of the central nervous system which commonly affects young adults. Kolaviron, a biflavonoid isolate of Garcinia kola, has been used in experimental studies which explored its anti-oxidative, anti-inflammatory and anti-genotoxic properties. This work was aimed at unraveling the possible ameliorative effect of kolaviron on cuprizone-induced demyelination in the prefrontal cortices of Wistar rats. A total of 28 adult male Wistar rats were divided into four groups A–D. Group A received corn oil (Control), group B received 0.2% Cuprizone, group C received kolaviron (200 mg/kg bw), while group D rats were treated concomitantly with both kolaviron and cuprizone. All groups were treated for 42 days, after which behavioral, histological, immunohistochemical and biochemical analyses were carried out on the prefrontal cortices. Cuprizone significantly down-regulated the level of superoxide dismutase, exacerbated lipid peroxidation and, reduced spatial memory. Cuprizone also induced peripheral and central chromatolysis alongside with atrophied astrocytes in the prefrontal cortex. These alterations were significantly prevented in kolaviron-treated rats, as kolaviron sustained the integrity of neuronal and non-neuronal cells. The activity of kolaviron observed in this study was due toits intrinsic antioxidant properties, which enabled it to combat oxidative damage induced by cuprizone,thereby making kolaviron a potential tool in neurodegeneration therapy of demyelination origin.