Publication: Gama Işınlarına Maruz Kalan Sıçanlarda Myricitrin ve Chebulinic Asitin Hipokampusa Etkilerinin Stereolojik, Histokimyasal ve Biyokimyasal Yöntemlerle Belirlenmesi
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Amaç: Gama ışınları radyasyonun iyonlaştırıcı bir türüdür ve birçok alanda, farklı şekillerde kullanılmaktadır. Özellikle kanser hastalığının teşhis ve tedavisinde kullanılan gama radyasyonunun insan sağlığına birçok olumsuz etkisi vardır. Çalışmamızda gama radyasyonunun fareler üzerinde, hipokampus bölgesinde oluşturduğu zararı ve myricitrin ve chebulinic asidin bu hasarı önlemedeki etkilerini göstermeyi amaçladık. Materyal ve Metot: Bu çalışmada 36 adet Wistar albino cinsi erkek ratlar 6 gruba ayrılmıştır. 10 gün boyunca 1. Gruba standart yem verilmiş, 2. Gruba Myricitrin, 3. Gruba ise Chebulinic asit uygulanmıştır. 4. Grup, 10 gün boyunca günde 1 saat gama ışınıma maruz bırakılmış, 5. grupda gama ışınlarına maruz bırakılmış gruba aynı zamanda Myricitrin uygulanmış ve 6. Gruba da aynı şekilde gama ışınıyla Chebulinic asit verilmiştir. Deney sonrasında tüm denekler açık alan, zorunlu yüzme ve pasif öğrenme davranış testlerine tabi tutulmuştur. Bulgular: Bu çalışma sonunda, düzenli olarak gama radyasyonuna maruz bırakılan sıçanlarda, hipokampusteki ortalama nöron sayılarında önemli derecede düşüş (p<0.01) ve davranış değişiklikleri görülmüştür. Gama yanında myricitrin verilen grupta ise gerek nöron sayıları gerekse davranış şekilleri açısından gama grubundan farklılıklar gözlenmiştir. Sonuç: Hipokampusleri zarar görmüş sıçanlarda önemli davranış değişiklikleri oluşmuş ancak myricitrinin bu değişiklikleri önlemede faydası görülmüştür. Myricitrinin kimyasal etkileri önleyici ajan olarak kullanımının ileri düzey araştırmalarla incelenmesi önerilmektedir.
Aim: Gamma rays are an ionizing type of the radiation and it was beeing used in many areas, in different ways. Gamma radiation, which is used especially in diagnosis and treating the cancer disease, has many harmful effects on human health. In this study, we aimed to indicate damage that is caused by gamma radiation to the rats, especially to their hippocampus that is related to memory and learning, and the preventive effect of myricitrin and chebulinic acid on this damage. Material and Method: In this study, 36 male Wistar albino rats divided into 6 groups. First group feeded normally for ten days and weren't exposed to any process. Myrisitrin was given to second group and chebulinic acid was given to third group. Fourth group was exposed to 1 hour gamma radiation a day for 10 days, to the fifth group myrisitrin was given beside this radiation and to the sixth group chebulinic acid was given beside radiation. After this experiment, all subjects are tested with open field test, forced swimming test and passive learning test. Results: At the end of this study, behavioral changes and significant decrease on the average numbers of neurons on the hippocampus (p<0.01), were observed on the rats that were exposed to gamma radiation regularly. In terms of both behavioral changes and neuron numbers, differencies were observed on the group that were given myricitrin beside radiation from the gamma group. Conclusion: Significant behavioral changes were occured on the rats with hippocampal damage but the help of myricitrin to prevent these changes were seen. It is suggested to do advanced studies about the usage of myricitrin as an agent to prevent chemical effects.
Aim: Gamma rays are an ionizing type of the radiation and it was beeing used in many areas, in different ways. Gamma radiation, which is used especially in diagnosis and treating the cancer disease, has many harmful effects on human health. In this study, we aimed to indicate damage that is caused by gamma radiation to the rats, especially to their hippocampus that is related to memory and learning, and the preventive effect of myricitrin and chebulinic acid on this damage. Material and Method: In this study, 36 male Wistar albino rats divided into 6 groups. First group feeded normally for ten days and weren't exposed to any process. Myrisitrin was given to second group and chebulinic acid was given to third group. Fourth group was exposed to 1 hour gamma radiation a day for 10 days, to the fifth group myrisitrin was given beside this radiation and to the sixth group chebulinic acid was given beside radiation. After this experiment, all subjects are tested with open field test, forced swimming test and passive learning test. Results: At the end of this study, behavioral changes and significant decrease on the average numbers of neurons on the hippocampus (p<0.01), were observed on the rats that were exposed to gamma radiation regularly. In terms of both behavioral changes and neuron numbers, differencies were observed on the group that were given myricitrin beside radiation from the gamma group. Conclusion: Significant behavioral changes were occured on the rats with hippocampal damage but the help of myricitrin to prevent these changes were seen. It is suggested to do advanced studies about the usage of myricitrin as an agent to prevent chemical effects.
Description
Tez (yüksek lisans) -- Ondokuz Mayıs Üniversitesi, 2016
Libra Kayıt No: 92503
Libra Kayıt No: 92503
Keywords
Histoloji ve Embriyoloji, Flavonlar, Flavonoidler, Gama Işınları, Hipokampus, Radyasyon, Radyasyon Etkileri, Radyasyondan Korunma, Histology and Embryology, Stereoloji, Flavones, Sıçanlar, Flavonoids, Tanenler, Gamma Rays, Hippocampus, Radiation, Radiation Effects, Radiation-Protection, Stereology, Rats, Tannins
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