Yılmaz Güvercin

The effect of prenatal exposure to 1800 MHz electromagnetic field on calcineurin and bone development in rats

PURPOSE To investigated the effects of exposure to an 1800 MHz electromagnetic field (EMF) on bone development during the prenatal period in rats. METHODS Pregnant rats in the experimental group were exposed to radiation for six, 12, and 24 hours daily for 20 days. No radiation was given to the pregnant rats in the control group. We distributed the newborn rats into four groups according to prenatal EMF exposure as follows: Group 1 was not exposed to EMF; groups 2, 3, and 4 were exposed to EMF for six, 12, and 24 hours a day, respectively. The rats were evaluated at the end of the 60th day following birth. RESULTS Increasing the duration of EMF exposure during the prenatal period resulted in a significant reduction of resting cartilage levels and a significant increase in the number of apoptotic chondrocytes and myocytes. There was also a reduction in calcineurin activities in both bone and muscle tissues. We observed that the development of the femur, tibia, and ulna were negatively affected, especially with a daily EMF exposure of 24 hours. CONCLUSION Bone and muscle tissue development was negatively affected due to prenatal exposure to 1800 MHz radiofrequency electromagnetic field.

Quadriceps Tendon Rupture due to Postepileptic Convulsion

We present a case of quadriceps tendon (QT) rupture. QT ruptures can occur in all ages. The cause is mostly traumatic in origin. Spontaneous ruptures that are thought to result from predisposing conditions are rare. Post-convulsion QT ruptures lacking traumas in their history can be overlooked in clinical examinations. This should be born in mind by the attending physician, as early diagnosis and treatment of the condition can lead to satisfactory outcomes.

Synovial Sarcoma Mimicking Myositis Ossificans

A calcification mass was incidentally found in the soft tissue of a patient who had a history of trauma to the extremity during examination. The patient had no symptom. The pathological analysis of the mass revealed it was an early-phase synovial sarcoma (SS). The diagnosis was made before the onset of symptoms and proper surgical intervention was performed. Therefore, in case of a <1 cm lesion clinically suspicious of myositis ossificans, SS should be taken into consideration as a possible diagnosis.

Görme Bozukluğu ile Ekstremite Kırıklarının İlişkisi

Ya z›fl ma Ad re si/Ad dress for Cor res pon den ce: Dr. Veysi Öner, Recep Tayyip Erdoğan Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, Rize, Türkiye Gsm: +90 464 213 04 91 E-pos ta: veysioner@gmail.com Ge lifl Ta ri hi/Re cei ved: 04.11.2012 Ka bul Ta ri hi/Ac cep ted: 22.01.2013 Berrak Şekeryapan, Mehmet Sabri Balık*, Veysi Öner, Yılmaz Güvercin*, Kemal Türkyılmaz, Adem Erkut*, Mustafa Durmuş Recep Tayyip Erdoğan Üniversitesi Tıp Fakültesi, Göz Hastalıkları Anabilim Dalı, Rize, Türkiye *Recep Tayyip Erdoğan Üniversitesi Tıp Fakültesi, Ortopedi ve Travmatoloji Anabilim Dalı, Rize, Türkiye Öz gün Arafl t›r ma / Ori gi nal Ar tic le