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Yıl:2016; Cilt: 3; Sayı: 1>> Özet
TAM METİN
The Journal of Neurobehavioral Sciences; 2016;3(1):7-12
Yetişkin Wistar Sıçanlarında Serebral Kan Damarlarının Histomimarisi Üzerindeki Diklorvos Etkisi
IT Abdu, H Adamu, MH Modibbo, AA Yusuf
Bayero University, Kano
Serebral kan damarları insanların ve hayvanların beyinleri için çok önemlidir. Kan akışının kesilmesi ya da durması nedeniyle oluşan herhangi bir anomali ölümcül sonuçlara sebep olabilir. Diklorvis, Otapiapia ya da Madarar piapia olarak bilinen bölgesel olarak formüle edilmiş sinek ve böcek ilaçlarının aktif maddeleriyle oluşan uçucu bir organofosfattır. Diklorvis, geri dönülemez bir şekilde asetilkolinesteraza bağlanan ve inhibisyonuna sebep olan bir anti- asetilkolinesterazdır. Bu çalışma yetişkin wistar sıçanlarının serebral damar histolojisindeki diklorvos etkilerini saptamayı amaçlar. Sağlıklı görünen 25 adet wistar sıçanı rastgele seçilmiş ve beş gruba ayrılmıştır. İlk iki grup kontrol grubu olarak kullanılırken son üç grup etanol çözeltisinde aşırı dozda diklorvosa maruz bırakılmış ve 28 gün boyunca deney uygulanmıştır. Son dozdan 24 saat sonra hayvanlar öldürülmüş ve beyin dokuları rutin histolojik teknikler için alınmıştır. Bütün hayvanların nisbi beyin ağırlıkları saptanmış ve tedavi edilen gruplarla kontrol grubunun ortalamasını kıyaslamak için ANOVA uygulanmıştır. Kontrol gruplarıyla tedavi edilen grupların ortalama beyin ağırlıklarında istatiksel olarak önemli bir fark [F = 0.88, p = 0.49] saptanmamıştır. Tedavi edilen grupların H&E kimyasal maddeleri(kalıntıları) perivasküler ödem, piknoz ve apoptozun farklı derecelerini göstermiştir. Diklorvosun aşırı kullanımı perivasküler ödem ve apoptoz gibi histomimaride serebral vasküler değişikliklere sebep olabilir fakat beyin ağırlığını etkilemeyebilir.
Effect of Dichlorvos on Histoarchitecture of The Cerebral Blood Vessels in Adult Wistar Rats
Cerebral blood vessels are vital in supplying brain in both human and animals. Any anomaly by rupture or interruption of blood flow may lead to fatal consequences. Dichlorvos is a volatile organophosphate that forms the active ingredient of locally formulated insecticide and pesticide known as Otapiapia or Madararpiapia. It is an anti-acetylcholinestrase that binds irreversibly to acetylcholinesterase and leads to its inhibition. The study aims to determine the effects of dichlorvos on the histology of the cerebral vessels in adult wistar rats. Twenty five apparently healthy adult wistar rats were randomly selected and divided into five groups. The first two groups were used as control while the last three groups were exposed to graded doses of dichlorvos in ethanol solution and experimented for twenty eight days. Twenty four hours after the last exposure the animals were sacrificed and the brain tissues were collected for routine histological technique. The relative brain weights of all the animals were determined and one – way ANOVA was conducted to compare the mean of the control with the treated groups. There was no statistically significant difference [F = 0.88, p = 0.49] in the mean brain weights of the controls and the treated groups. The H&E stain of the treated groups showed variable degrees of perivascular oedema, pyknosis and apoptosis. Prolong use of dichlorvos could cause cerebral vascular changes in the histoarchitecture such as perivascular oedema and apoptosis, may not affect the brain weight.

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