Oxidative Damage in Some Tissues of Van Fish (Alburnus tarichi Güldenstädt, 1814) Having Abnormal Ovary

Year 2017, , 447 - 452, 29.09.2017

Necati Özok Ahmet Regaib Oğuz , Abdulahad Doğan Burcu Ergöz

https://doi.org/10.29133/yyutbd.315388

Abstract

Van Lake is the largest soda lake of Turkey and there is only one fish species (Van Fish, Alburnus tarichi Güldenstädt, 1814) that can survive under the extreme conditions of the lake. There are several researches carried out on the issue of lake contamination recently. Gonad abnormalities observed among these fish are one of the most important issues. In the present study, the malondialdehyde (MDA) and reduced glutathione (GSH), and the antioxidant enzyme levels such as superoxide dismutase (SOD) and glutathione peroxidase (GSH – Px) are compared in gills, livers, and gonads of the Van Fish (the ovary abnormality of which are determined in Van Lake) and the normal fish. Compared to the normal fish, the MDA levels of the abnormal fish show a considerable amount of increase in all of the tissues (P<0.05). There is a significant decrease in the SOD activity in the gill and ovary tissue and in the GSH – Px activity in the livers of the abnormal individuals compared to the normal individuals (P<0.05). As for the GSH levels, there is no difference found when the normal and abnormal tissues are compared. Consequently, when the fish with ovary abnormalities which are thought to be exposed to contaminators in a certain time period is compared to the normal fish, it can be said that their antioxidant defense systems are affected.

Keywords

Alburnus tarichi, Lake Van, Ovary abnormalities, Oxidative enzymes, Van Fish

Anormal Gonadlı Van Balığının (Alburnus tarichi Güldenstädt, 1814) Bazı Dokularında Oksidatif Hasarın Belirlenmesi

Abstract

Van Gölü dünyanın en büyük sodalı gölü olup gölde ekstrem şartlara uyum sağlayan tek bir balık türü olan Van balığı yaşamaktadır. Son yıllarda, gölün kirliliğine ilişkin pek çok çalışma yapılmıştır. Özellikle balıklar arasında gözlenen gonad anormallikleri bunlardan en önemlisidir. Bu çalışmada, Van gölünde ovaryum anormalliği belirlenen Van balığı ve normal balıklarda malondialdehit (MDA) seviyeleri ve redükte glutatyon (GSH) düzeyleri ile superoksid dismutaz (SOD) ve glutatyon peroksidaz (GSH-px) gibi antioksidan enzim seviyeleri solungaç, karaciğer ve gonadlarda karşılaştırıldı. MDA seviyeleri anormal bireylerde normal bireylere göre bütün dokularda önemli oranda artış gösterdi (P<0.05). Anormal bireylerin solungaç ve ovaryum dokularındaki SOD aktivitesi ve karaciğer dokusundaki GSH-Px aktivitesi normal bireylere göre azalma önemli bulundu (P<0.05). GSH seviyesinde ise normal ve anormal dokuların karşılaştırılmasında fark bulunmadı. Sonuç olarak belirli bir dönemde kirleticilere maruz kaldığı düşünülen anormal ovaryumlu balıkların normal balıklarla karşılaştırıldığında antioksidant savunma sistemlerinin etkilendiği söyleyenebilir.

Keywords

Alburnus tarichi, Van Gölü, Van Balığı, Oksidatif enzimler, Ovaryum anormallikleri

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