Journals / Turkish Journal of Zoology / 2011 / Cilt: 35 - Sayı: 4

Nil tilapya (Oreochromis niloticus)’sı periferal eritrositlerinde mikronukleus ve diğer nukleus anomalilerinin oluşumu üzerine subletal kadmiyum derişimlerinin etkileri

Induction of micronuclei and other nuclear abnormalities in peripheral erythrocytes of Nile tilapia, Oreochromis niloticus, following exposure to sublethal cadmium doses

Pages
585–592
Publication Date
2022-11-04
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

However, a gradual trend of decrease was also observed starting from the sixth day.

📌 3 Key Takeaways

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Objective & Hypothesis:The genotoxic eff ects of sublethal doses of cadmium in peripheral erythrocytes of Oreochromis niloticus was investigated using micronucleus (MN) and nuclear abnormalities (NAs) tests.
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Key Findings & Data:For this reason, the fi sh were exposed to medium changes of 0.5 and 1.0 mg/L doses of cadmium (Cd) during an average treatment period of 10 days.
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Conclusion & Impact:However, a gradual trend of decrease was also observed starting from the sixth day.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The genotoxic eff ects of sublethal doses of cadmium in peripheral erythrocytes of Oreochromis niloticus was investigated using micronucleus (MN) and nuclear abnormalities (NAs) tests. For this reason, the fi sh were exposed to medium changes of 0.5 and 1.0 mg/L doses of cadmium (Cd) during an average treatment period of 10 days. On the 2nd, 4th, 6th, and 10th days of the test period, the erythrocytes, including the micronuclei (MN) and other nuclear abnormalities such as lobbed nuclei (LB), blebbed nuclei (BL), and notched nuclei (NT), were counted and pointed out. As a positive control, a 4 mg/L dose of cyclophosphamide was used. Exposure to doses of cadmium caused signifi cantly increased (P < 0.05) micronuclei in peripheral erythrocytes of fi sh. It was also observed that the application of a 1.0 mg/L dose of Cd produced more of an eff ect on MN frequencies than the application of a 0.5 mg/L dose. Th e maximum frequencies of MN were recorded on the fourth day of the experiment period. Exposure to doses of cadmium caused signifi cantly increased (P < 0.05) NA (LB, BL, and NT) frequencies and, as with the MN results, the 1.0 mg/L dose of Cd had more of an eff ect than the 0.5 mg/L dose on NA frequencies. Th e maximum frequencies of NAs were recorded on the fourth day of the experiment. As a result of these doses of Cd, the MN and NA frequencies in peripheral erythrocytes of fi sh were observed to increase in relation to both the time and dose applied. However, a gradual trend of decrease was also observed starting from the sixth day.

Özet

Kadmiyumun subletal derişimlerinin Oreochromis niloticus’un peripheral eritrositlerin üzerine genotoksik etkileri, mikronukleus (MN) ve nukleus anomalileri (NAs) testleri yapılarak araştırılmıştır. Bu amaçla, balıklar 10 gün süreyle 0,5 ve 1,0 mg/L kadmiyum (Cd) ortam derişimlerine maruz bırakılmıştır. Deneyin 2. 4. 6. ve 10. günlerinde mikronukleus ve diğer nukleus anomalileri olan loblu nukleus (LB), biloblu nukleus (BL) ve çentikli nukleus (NT) içeren eritrositler sayılarak tesbit edilmiştir. Pozitif kontrol amacıyla 4 mg/L cyclophosphamide içeren ortam derişimi kullanılmıştır. Uygulanan Cd derişimleri peripheral eritrositlerde MN frekansını önemli oranda (P < 0,05) attırmış ve 1,0 mg/L Cd derişimi, MN frekansı üzerinde 0,5 mg/L Cd derişimine göre daha etkili (P < 0,05) olmuştur. Deney süresince, en yüksek MN frekansı 4. günde saptanmıştır. Cd derişimlerinin her ikiside nukleus anomalileri (LB, BL, NT) frekansını önemli oranda arttırmış (P < 0,05) ve 1,0 mg/L Cd derişimi NAs frekansları üzerinde 0,5 mg/L Cd derişimine göre daha etkili (P < 0,05) olmuştur. En yüksek nukleus anomalileri frekansı deneyin 4. gününde belirlenmiştir. Sonuç olarak, Cd derişimleri etkisiyle, peripheral eritrositlerde MN fekansları ve NAs frekansları derişime ve zamana bağlı olarak yükselmiş, fakat 6. günden itibaren azalma eğilimi göstermiştir.

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Cite This Article

BERKÖZ, M., HUNT, A. Ö., ÖZKAN, F., GÜNDÜZ, S. G. (2022). Nil tilapya (Oreochromis niloticus)’sı periferal eritrositlerinde mikronukleus ve diğer nukleus anomalilerinin oluşumu üzerine subletal kadmiyum derişimlerinin etkileri. Turkish Journal of Zoology, Cilt: 35 - Sayı: 4, 585–592. https://ajindex.com/articles/616421

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