Objective: Cancer is the most common cause of death after cardiovascular diseases. Cisplatin used in most types of cancer produces neurotoxicity. In this study, we aimed to investigate the effects of pomegranate peel extract (1) in different doses, as potent antioxidants, on the prevention of neurotoxicity due to cisplatin, which is frequently used in cancer treatment.Methods: In our study, newborn rat cortex was used. 2 hours following the application of PPE at 200, 300 and 400 mg/mL, neurotoxicity was established by applying cisplatin in 50 and 100 µM concentrations.Results: In our study, cisplatin decreased cell viability in increasing doses, while PPE showed the best neuroprotective effect in high doses. Increased total oxidant capacity due to toxicity was significantly improved by PPE4. The antioxidant capacity decreased in the toxicity group showed improvement with the administration of PPE4. At the same time, increased TNF-α mRNA expression after cisplatin administration was significantly reduced with the administration of PPE4. The increased caspase 3 (CAS 3) and caspase 9 (CAS 9) mRNA expression due to cisplatin showed improvement with the administration of PPE4. Conclusion:These results indicated that PPE could inhibit cisplatin-induced neurotoxicity, and these effects may be related to anti-apoptotic and antioxidants activities.
Araştırma Makalesi / Research Article Öz. Amaç: Güçlü bir antioksidan etkiye sahip olan nar kabuğunun pek çok fizyolojik özellikleri gösterilmiştir. Çalışmamızda eksitatör bir nörotransmitter olan glutamatın nörotoksik etkisine karşı, güçlü antioksidan olan nar kabuğunun etkilerini araştırmayı amaçladık. Materyal ve Metot: Çalışmamızda yeni doğan sıçan beyin korteksi kullanılmıştır. Nar kabuğu ekstresi 200, 300 ve 400 mg/ml dozunda uygulandıktan 2 saat sonra 6x10-3 ve 3x10-3 M konsantrasyonda glutamat uygulaması gerçekleştirildi. Toksisite oluşturulduktan 24 saat sonra canlılık testi, total oksidan ve antioksidan kapasite ölçümleri gerçekleştirildi. Bulgular: Glutamat uygulaması artan dozlarda hücre canlılığını önemli ölçüde azaltırken nar kabuğu ekstresi yüksek dozda en iyi nöroprotektif etkiyi ortaya koymuştur. Toksisiteye bağlı artan oksidan kapasite nar kabuğu uygulaması ile anlamlı derecede düzelmiştir. Glutamata bağlı azalan antioksidan kapasite nar kabuğu ekstresi ile düzelme göstermiştir. Nar kabuğu ekstresi tek başına yüksek doz uygulandığında proliferatif etki ortaya koymuştur. Nar kabuğu nöroprotektif etkilerini proinflamatuar sitokin olan tümör nekrozis faktör-α ve apoptotik proteinler olan caspas 3 ve 9 ekspresyonunu baskılayarak ortaya koymuştur. Sonuç: Nar kabuğu ekstresi antioksidan, antiinflamatuar ve anti-apoptotik etkisi ile glutamata bağlı gelişen nörotoksisiteyi önlemiştir.
The aim of this study was to demonstrate the antiproliferative effects of Gossypin which has antioxidant, anti-inflammatory, analgesic and anti-cancer properties on human hepatoma (Hep-3B) cells isolated from Hibiscus vitifolius. Materials and Methods: Hep-3B Cell Lines American Type Culture Collection (ATCC, USA) was provided in our study. The cells were exposed to different concentrations (5-100 µg/ml) of gossypin and cisplatine (50µM) as positive control. Afterwards, viability analysis was performed with MTT method on the cells at 24, 48 and 72 hours. Hoechst fluorescent staining was performed for indication of apoptosis in cells. At the same time, RT-PCR and NFκB, caspase 3 and 9 mRNA expression levels were examined. Results: Gossypin administration prevented cell proliferation due to dose and time. In the first 24 hours, only 100µg/ml dose was effective, while in 48 and 72 hours it was effective depending on the dose. With Hoechst fluorescent staining, gossypin showed nearly the same effect as the cisplatin group, with doses of 50 and 100 µg/ml seen to lead the cells to more apoptosis. Gossypin, which inhibits dose dependent NFκB mRNA expression, has also up regulated dose dependent the apoptotic proteins mRNA expression of caspase 3 and 9. Conclusion: Gossypin showed a close effect with cisplatin on Hep-3B cells depending on the dose. These effects were demonstrated by activating apoptosis and inhibiting NFκB. Based on this, gossypin may be a potential anticancer agent in the future for the treatment of liver cancer. Amaç: Çalışmamızda Hibiscus vitifolius'dan izole edilen ve antioksidan, antienflamatuar, analjezik ve anti kanser özelliklere sahip olan gossypinin Hep-3B hücreleri üzerindeki antiproliferatif etkilerini göstermeyi amaçladık. Gereç ve Yöntem: Çalışmamızda Hep-3B hücre hatları American Type Culture Collection (ATCC, USA) temin edilmiştir. Hücreler farklı konsantrasyonlarda (5-100 µg/ml) gossypin ve pozitif kontrol olarak da sisplatine (50µM) maruz bırakılmışlardır. Sonrasında 24, 48 ve 72 saatlerde hücrelere (MTT) yöntemi ile canlılık analizi yapılmıştır. Hücrelerdeki apoptozun göstergesi için Hoechst floresan boyama yapıldı. Aynı zamanda RT-PCR ile Nuklear kappa B (NFκB), kaspaz 3 ve 9 mRNA ekspresyon düzeyleri incelendi. Bulgular: Çalışmamızda gossypin uygulaması doza ve zamana bağlı olarak hücre proliferasyonunu önlemiştir. İlk 24 saatte sadece 100µg/ml dozunda etki gösterirken 48 ve 72. saatlerde ise doza bağlı olarak etkisini göstermiştir. Hoechst floresan boyama ile gossypin 50 ve 100 µg/ml dozunda hücreleri daha belirgin apoptoza götürdüğü görülürken sisplatin grubu ile neredeyse aynı etkiyi ortaya koymuştur. NFκB mRNA ekspresyonunu doza bağlı inhibe eden gossypin, aynı zamanda apoptotik protein olan kaspas 3 ve 9'un mRNA ekspresyonlarını doza bağlı olarak indüklemiştir. Sonuç: Gossypin doza bağlı olarak Hep-3B hücreleri üzerinde sisplatin ile yakın bir etki ortaya koymuştur. Bu etkilerini ise apoptozu aktive ederek ve NFκB inhibisyonu yaparak ortaya koymuştur. Buradan yola çıkarak karaci...
Urotensin-II (UT-II) is the most powerful vasoconstrictor agent and is known to play a role in heart failure, diabetes, pulmonary hypertension and asthma. The effect of passive smoking on UT-II levels is unknown. The present study aims to evaluate serum UT-II levels in children exposed to passive smoke. The study included a total of 120 children; 47 children not exposed to passive smoke were included in Group 1 (control group), and 73 children exposed to passive smoke were included in Group 2.Serum samples of the participants were stored at -80 °C after centrifugation and were assessed at least two times with high-precision human ELISA kits. Serum UT-II levels were signifi cantly higher in the children exposed to passive smoke than in the children not exposed. Furthermore, Group 2 was grouped according to the number of cigarettes smoked at home per day, type of passive smoking (second-hand smoke or third-hand smoke), and how many people in their family and/or living together smoked. There was a positive correlation between the number of cigarettes they were exposed to per day and serum UT-II levels. Passive smoking in childhood may be associated with high serum UT-II levels.
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