Ratlarda Akrilamid Kullanımının Antioksidan ve Oksidan Değerleri Üzerine Etkisi

WOS:000321751900009Bu çalışmada, uzun süre akrilamid verilen sıçanlar üzerinde total antioksidan durum (TAS), total oksidan durum (TOS) ve iskemi modifiye albuminin (IMA) serum düzeylerinin nasıl değiştiğinin araştırılması amaçlanmıştır. Çalışmada 65-75 g ağırlığında ve yaşları 3-4 haftalık 25 erkek ve 25 dişi Wistar cinsi sıçanlar kullanılmıştır. Hayvanlar 90 gün boyunca standart sıçan yemi ile beslenmişlerdir. Bununla beraber, günlük tüketecekleri içme suyuna 2 mg/kg/gün ve 5 mg/kg/gün dozunda akrilamid ilave edilmiştir. Akrilamid uygulaması sonrası hayvanlar anestezi altında servikal dislokasyonla öldürülmüş ve serumlarında IMA, TAS, TOS ve albumin düzeyleri spektrofotometrik yöntem ile ölçülmüştür. 2 mg/kg ve 5mg/kg akrilamid verilen erkek sıçanlara ait serum IMA düzeyleri kontrol grubuna göre önemli derecede yüksek bulunmuştur. Ayrıca, 5mg/kg akrilamid verilen erkek sıçanlara ait serum TAS düzeyleri kontrol grubuna göre önemli derecede düşük ve serum TOS değerleri önemli derecede yüksek bulunmuştur. 2 mg/kg ve 5mg/kg akrilamid verilen dişi sıçanlara ve kontrol grubuna ait serum IMA, TAS, TOS ve albumin düzeyleri arasında istatistiki açıdan önemli bir fark bulunamamıştır. Bu sonuçlara bağlı olarak bulgularımız, akrilamidin oksidatif stresi artırdığını göstermektedir.The aim of this study was to investigate serum total antioxidant status (TAS), total oxidant status (TOS) and ischemia-modified albumin (IMA) levels in long term acrylamide (ACR) given rats, compared to control rats. In total, 25 male and 25 female Wistar rats were involved in this experiment. Animals in each sex were segregated into three groups. Two of them were treatment groups and one of them was control group. Each treatment group consisted of ten animals and each control group consisted of five animals. ACR was administered to the treatment groups at 2 and 5 mg/kg/day via drinking water for 90 days. In the end of the experiment, serum samples were analyzed for IMA, TAS, TOS and albumin levels with the spectrophotometric method. Serum IMA and adjusted IMA levels were significantly higher at concentrations of 2 mg/kg and 5 mg/kg in the male rats when compared with those of the control male rats. Serum TAS levels significantly decreased at concentrations of 5 mg/kg in the male rats when compared with those of the control rats. We also observed a significant increase in the levels of serum TOS at concentrations of 5 mg/kg in the male rats. There were no significant differences between serum IMA, TAS, TOS and albumin levels at concentrations of 2 mg/kg and 5 mg/kg in the female rats. Our findings show that long term treatment with 2 mg/kg and 5 mg/kg doses of ACR led to a significant depletion of serum TAS levels and overproduction of serum TOS and IMA levels, consequently, to an increase in oxidative stress

The Journey of PhD Students’ Learning Qualitative Research

This presentation aimed to share experiences of five PhD students as they learn the qualitative research designs, creating interview protocols, practicing observations and semi-structured interviews and coding qualitative data manually and/or using MAXQDA. We will share our self-reflexive process focusing on the following questions: What did we learn from qualitative research courses? What opportunities in these courses were or were not helpful in learning how to conduct qualitative research? How is it different to code qualitative data manually and in MAXQDA? We will particularly share the course activities done collaboratively and our take-aways from these activities. We will also share our contemplation about which learning opportunities might help graduate students learn qualitative research both theoretically and practically. The courses we enrolled allowed us to learn that a qualitative study is as systematic as quantitative research. However, we could not fully comprehend how to decide the most appropriate method for a particular qualitative study. We also believe that most graduate students need to practice all stages of qualitative research to become more capable of doing qualitative research. During our courses, we had a chance to experience some steps of data collection and analyses processes such as observation, interviewing, transcribing, and coding because it was not possible to practice each in one course. With this reflective presentation, we hope to share our needs, challenges and suggestions as graduate students and so contribute to the second theme of the TQR 11th Annual Conference

Serum Level of suPAR and YKL-40, a New Biomarker in Patients with Acute Myocardial Infarction?

Introduction: Low grade inflammation plays an important role in the several development process of coronary artery disease. The soluble urokinase plasminogen activator receptor (suPAR) and chitinase 3-like protein 1 (YKL-40) are the new potential biomarkers of inflammation. We intended to test the hypothesis whether the inflammatory biomarker YKL-40 alone or in combination with suPAR could be the new diagnostic biomarkers for acute myocardial infarction (AMI). Material and Methods: Fifty-five patients with AMI and seventy control subjects were included in the study. The diagnosis of AMI was based on the current 3rd standard universal definition criteria. Serum YKL-40 and suPAR levels were measured at the first and second days of AMI by using ELİSA method. Results: Serum YKL-40 levels were significantly higher in the first (69.10±16.58 ng/mL) and second day (60.64±16.01 ng/mL) of AMI patients than those of the control subjects (37.11±4.30 ng/mL) (p>0.001). Serum YKL-40 levels in the first day of AMI patients also were significantly higher than those of second day of AMI patients (p>0.01). Serum suPAR were significantly higher in the first (6.58±3.24 ng/mL) and second day (5.86±4.56 ng/mL) of AMI patients than those of the control subjects (2.26±1.92 ng/mL) (p>0.001). Conclusion: Serum suPAR and YKL-40 can be considered strong inflammatory markers of AMI. We concluded that serum suPAR and YKL-40 levels at the first day and second day of AMI could be used as a clinically useful marker for diagnosis of AMI