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The aim of our study was to evaluate the possible effects of whole-body electromagnetic field (EMF) exposure on reproduction in growing male albino Wistar rats. The rats (2 days old) were randomly divided into three independent groups. The rats were exposed to EMF 1800 and 900 MHz for 2 hours continuously per day for 90 days. Sham control was kept under similar conditions except that the field was not applied for the same period. After blood samples were collected, the animals were sacrificed 24 h after the last exposure and the tissues of interest were harvested. The mean plasma total testosterone showed similarity among the two study groups and was significantly higher than the sham control rats. The percentage of epididymal sperm motility was significantly higher in the 1800 MHz group (P<0.05). The morphologically normal spermatozoa rates were higher and the tail abnormality and total percentage abnormalities were lower in the 900 MHz group (P<0.05). Histopathologic parameters in the 1800 MHz group were significantly higher (P<0.05). In conclusion, the present study indicated that exposure to electromagnetic wave caused an increase in testosterone level, epididymal sperm motility (forward), and normal sperm morphology of rats. As a consequences, 1800 and 900 MHz EMF could be considered to be a cause of precocious puberty in growing rats.

In conclusion, the oxidative stress caused by formaldehyde exposure was reduced with the application of curcumin.

Makale Kodu (Article Code): KVFD-2009-982 SummaryThe purpose of this study is to determine some heavy metals in muscle tissues of fish collected from the Middle Black Sea Coast of Samsun, Sinop, Terme, Fatsa and Ordu in Turkey. A total of 1650 fish samples including Trachurus trachurus, Alosa caspia, Pomatomus saltatrix, Mullus barbatus, Spicara smaris, Engraulis encrasicolus, Gobius cephalarges, Sarda sarda, Merlangius euxmus and Psetta maxima were used as material. Metal concentrations in fish samples were measured by atomic absorption spectrophotometry. The average value of metal concentrations in fish samples were determined as follows: 2.38 μg/g for Cu, 5.41 for Mn, 26.06 for Fe, 3.40 for Ni, 25.74 for Zn, 0.77 for Pb and 0.022 for Cd, but Hg was not detected. These values were compared with FAO/WHO standards and metal concentrations in fish samples were found to be lower than the maximum permissible levels, but lead level was found to be higher. Keywords: Heavy metal, Atomic absorption spectrometry, Fish Orta Karadeniz Bölgesinden Toplanan Balıklarda Ağır Metal Düzeylerinin Belirlenmesi ÖzetBu çalışma Türkiye'nin Orta Karadeniz kıyılarındaki Samsun, Sinop, Terme, Fatsa ve Ordu yörelerinden toplanan balık kas dokularında bazı ağır metal düzeylerinin araştırılması amacıyla yapıldı. İstavrit, tirsi, çinekop, barbun, izmarit, hamsi, kaya balığı, palamut, mezgit ve kalkan olmak üzere toplam 1650 adet balık örneği materyal olarak kullanıldı. Balıkta metal konsantrasyonu atomik absorbsiyon spektrometresi kullanılarak belirlendi. Balık örneklerinde ortalama ağır metal konsantrasyonları: Cu: 2,38, Mn: 5,41, Fe: 26,06, Ni: 3,40, Zn: 25,74, Pb:0,77 ve Cd: 0,022 μg/g olarak bulundu, Hg ise tespit edilemedi. Elde edilen bu değerler FAO/WHO standartları ile karşılaştırıldığında balık örneklerinin maksimum kabul edilebilir limitleri aşmadığı, fakat kurşun düzeyinin limitlerin üzerinde olduğu belirlendi.