DİDE KILIÇALP KILINÇ, YETER DEĞER, Ali ÇINAR

Effects of green tea on Electrocardiography of Guinea pigs exposed to Electromagnetic field emitted by mobile phones

Bu çalışma cep telefonları tarafından oluşturulan 900 MHz elektromanyetik alana maruz kalan kobay elektro-kardiyogramlarına (EKG) yeşil çayın etkisini belirlemek için yapıldı. Yeşil çayın endotel fonksiyonu üzerinde faydalı etkisi olduğu için, yeşil çay tüketimi kardiyovasküler risklerde yararlı bir sonuç gösterir. Materyal olarak 600–800 g ağırlığında, 28 adet kobay kullanıldı. Hayvanlar, bir hafta adaptasyon süresi sonunda rastgele seçilip dört gruba ayrıldı: kontrol grubu (Grup A), elektro manyetik alana maruz bırakılan grup (Grup B), elektro manyetik alana maruz bırakılıp yeşil çay ekstraktı uygulanan grup (Grup C) ve sadece yeşil çay ekstraktı uygulanan grup (Grup D). A ve D grubu elektromanyetik radyasyona maruz kalmamaları için ayrı bir odada tutuldu. Hayvanlar cep telefonlarının yaydığı 900-MHz elektromanyetik alana (217-Hz pulse rate, 2-W maximum peak power, SAR 0.95 w/kg) maruz bırakıldı. Cep telefonları kafeslerin içine yerleştirildi. Kobayların elektrokardiyogramları otuz günlük deneme periyodunun sonunda kaydedildi. Elektromanyetik alana maruz kalan B ve C gruplarındaki kobaylarda düşük kalp atım sayısı ve P-R aralığında uzama görüldü (P

Anahtar Kelimeler:

kalp, çay, nabız, bitki özütü, kalp hızı, kobay, yeşil çay, elektromanyetik alan, elektrokardiyografi, kalp damar hastalıkları, hayvan modelleri

Mobil telefonların oluşturduğu elektromanyetik alana maruz kalan kobaylarda Elektrokardiyografi üzerine yeşil çayın etkisi

This study was carried out to determine the effects of green tea on Electrocardiography (EKG) of Guinea pigs exposed to a 900 MHz electromagnetic field emitted by mobile phones. Because green tea has a beneficial effect on endothelial function, tea consumption is associated with decreased cardiovascular risk. Twenty-eight healthy guinea pigs weighing 600-800 g were used. After one week adaptation period, animals were randomly divided into four groups. Four experimental groups labeled as controls (Group A), irradiated (Group B), irradiated receiving green tea extract (Group C) and green tea only (Group D) were formed with seven randomly chosen animals. Group A and D were housed in a separate room without exposing EMF of mobile phones. Irradiation was accomplished by exposing the animals in Group B and C to a 900 MHz electromagnetic field from a 217-Hz pulse rate, 2-W maximum peak power mobile phone placed in the cage were the animals were kept. ECG of guinea-pigs in four groups was recorded by a direct writing electrocardiograph at the end of the 30-day experimental period during exposure to mobile phone. Sinus bradycardia (lower heart beat) and prolongation of the P-R interval was observed in Group B and C after exposure to electromagnetic field (P<0.05). Whereas the heart rate in the green tea extract supplemented group was close to the control group’s level, it was found to have been the lowest in the only irradiated (Group B). We found measurable effects in the heart rate and P-R interval parameters in the EM-exposed guinea pigs. It was found that EMF exposure for 30 days have some effects on ECG findings of guinea-pigs. The results suggest that exposure of guinea pigs to EM fields can cause disturbances in autonomic cardiac regulation.

Keywords:

heart, tea, pulse, plant extracts, heart rate, guineapigs, green tea, electromagnetic field, electrocardiography, cardiovascular diseases, animal models,

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