Journals / Uluslararası Hematoloji-Onkoloji Dergisi / 2011 / Cilt: 21 - Sayı: 1

Gürültünün İnsan eritrositlerindeki oksidan ve antioksidan dengeye etkileri

The effects of noise on oxidative and antioxidative balance in human erythrocytes

Pages
10–18
DOI
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AI Summary & Key Takeaways

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⚡ TL;DR(Too Long; Didn't Read)

The oxidative stress, which is possibly propagated by the physical environment, seems to have an important pathophysiological role in hearing loss and lipid peroxidative cellular changes in all of the workers who work in noisy occupations.

📌 3 Key Takeaways

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Objective & Hypothesis:Reactive oxygen and nitrogen species have been implicated in the pathogenesis of noise-induced hearing loss.
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Key Findings & Data:Blood samples of 127 workers in noisy workplace (WNW) and 117 workers in non-noisy workplace (WNNW) from the same company were taken into tubes with potassium EDTA as anticoagulant in order to obtain hemolysate.
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Conclusion & Impact:The oxidative stress, which is possibly propagated by the physical environment, seems to have an important pathophysiological role in hearing loss and lipid peroxidative cellular changes in all of the workers who work in noisy occupations.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Reactive oxygen and nitrogen species have been implicated in the pathogenesis of noise-induced hearing loss. In this case- control study, we investigated the oxidative and antioxidative status of erythrocytes from workers in noisy workplace. Blood samples of 127 workers in noisy workplace (WNW) and 117 workers in non-noisy workplace (WNNW) from the same company were taken into tubes with potassium EDTA as anticoagulant in order to obtain hemolysate. Total superoxide dismutase (SOD) and catalase (CAT) activities as the enzymes of antioxidative defense mechanism in the erythrocytes together with malondialdehyde (MDA) as the lipid peroxidation index and total nitric oxide (NO) as an index for nitrogen species analyses were performed by spectrophotometric methods. SOD activity was found to be 450.0±106.4 U/g Hb in WNW and 443.1±83.1 U/g Hb in WNNW. The difference between two groups were not statistically significant (p= 0.582). CAT activity was found to be 426.0±98.0 k/g Hb in WNW and 432.6±109.0 k/g Hb in WNNW showing statistically insignificant difference (p= 0.621). MDA levels in erythrocytes from WNW was significantly higher than WNNW (39.28±10.22 nmol/g Hb and 32.51±10.73 nmol/g Hb, respectively and p= 0.0001). On the other hand, NO levels were found to be significantly reduced in WNW (0.275±0.187 µmol/g Hb) compared to WNNW (0.382±0.284 µmol/g Hb) (p= 0.001). When we analyzed the hematological parameters, all the cell counts increased in WNW except monocytes and platelets compared to WNNW (p= 0.0001). Related to this changes, hemoglobin, MCHC, and hematocrit also increased in WNW (p= 0.0001). The oxidative stress, which is possibly propagated by the physical environment, seems to have an important pathophysiological role in hearing loss and lipid peroxidative cellular changes in all of the workers who work in noisy occupations.

Özet

Reaktif oksijen ve nitrojen türleri, yüksek ses kaynaklı duyma kayıplarında önemli bir patolojik faktör olarak kabul görmektedir. Bu vaka kontrollü çalışmamızda yüksek sesli ortamlarda çalışan işçilerin eritrositlerinde oksidan ve antioksidan dengeyi araştırdık. Yüksek sesli ortamda çalışan (YSOÇ) 127 işçi ile normal ortamda çalışan (NOÇ) 117 işçinin kanları hemolizat elde etmek üzere içinde antikoagulan olarak potasyum EDTA bulunan tüplere alındı. Bu hemolizatta antioksidan sistemin eritrositteki önemli üyelerinden süperoksit dismutaz (SOD) ve katalaz (CAT) enzim aktiviteleri ile lipid peroksidasyon son ürünü malondialdehit (MDA) ve nitrojen bileşiklerinin bir indeksi olan nitrik oksit (NO) spektrofotometrik metodla çalışıldı. YSOÇ grubunda SOD aktivitesi 450.0±106.4 U/g Hb bulunurken NOÇ grubunda bu miktar 443.1±83.1 U/g Hb olarak bulundu. Bu iki grup arasındaki ortalama farkı istatistiksel olarak anlamsızdı (p= 0.582). YSOÇ grubunda CAT aktivitesi 426.0±98.0 k/g Hb ve NOÇ grubunda 432.6±109.0 k/g Hb olarak bulundu, bu ortalamalar arasındaki fark da istatistiksel olarak anlamsızdı (p= 0.621). YSOÇ grubunda eritrosit MDA düzeyi NOÇ grubundan anlamlı bir şekilde daha yüksek bulundu (sırasıyla 39.28±10.22 nmol/g Hb ve 32.51±10.73 nmol/g Hb, p= 0.0001). Diğer taraftan NO düzeyleri YSOÇ grubunda (0.275±0.187 µmol/g Hb) NOÇ grubuna (0.382±0.284 µmol/g Hb) göre anlamlı bir şekilde düşüktü (p= 0.001). Çalışılan hematolojik parametrelere bakıldığında, YSOÇ grubunda, NOÇ grubuna göre monositler ve trombositler hariç bütün hücre grup sayılarında artış vardı (p= 0.0001). Bu değişikliklere paralel olarak, hemoglobin, MCHC ve hemotokrit düzeyleri de YSOÇ grubunda anlamlı bir şekilde artmıştı (p= 0.0001). Fiziksel çevrenin etkisi ile artmış olduğu düşünülen oksidatif stresin, gürültülü ortamda çalışan işçilerin duyma kaybından ve hücrelerdeki lipid peroksidasyon kaynaklı değişimlerden sorumlu olabileceği değerlendirildi.

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Cite This Article

PINAR, T., ATLI, A. K., ALAÇAM, H., KARABULUT, İ., SOĞUKSULU, İ., ATAŞ, A., OMAR, M. B., AMİN, N. A., AKYOL, Ö. (2011). Gürültünün İnsan eritrositlerindeki oksidan ve antioksidan dengeye etkileri. Uluslararası Hematoloji-Onkoloji Dergisi, Cilt: 21 - Sayı: 1, 10–18. https://ajindex.com/articles/323279

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