Zinc (Zn) plays an important role in the maintenance of immune functions, including cellular/humoral immunity, and in the prevention of oxidative injury. Therefore, the maintenance of a normal Zn status may be important in bone marrow transplantation (BMT) patients. Serum Zn levels were determined in 35 children during the BMT period. In addition, as Zn-related factors, serum Cu levels and alkaline phosphatase (AP) activity were also measured. There was a significant decrease in Zn and AP values during the immediate post-transplant period (lowest at day +7) when compared to pre-BMT levels (p < .01). The patients who developed hypozincemia were more likely to be transplanted for a diagnosis of malignant disorder and were younger, and adverse events appeared to occur more frequently. This pr...
Effects of Zn and Cd on condition factor (CF), hepatosomatic (HIS) and gonadosomatic (GSI) of Oreochromis
niloticus, after exposing the animals to 10 % of their LC50
values, namely 6.0 ppm Zn and 1.6 ppm Cd, over 7, 15,
and 30 days. Standard mathematical formulations were
used in determining the mentioned parameters.
Cadmium, which is a toxic metal, increased GSI and decreased HSI and CF at the beginning of the experiments. The
decrease in HSI and CF continued with increasing exposure
periods. Zinc, however, decreased all three parameters compared with control at the end of experiments (P
ÖZET MULTİ METALLE KİRLENMİŞ BİR TOPRAĞIN FİTOREMEDİASYON ÖNCESİ VE SONRASI METAL BİYOYARAYIŞLILIĞININ VE BİYOALINABİLİRLİĞİNİN ARAŞTIRILMASI Toprak kirliliği, dünya çapında bir sorundur, ağır metaller bu sorunun önemli bir parçasıdır. Ağır metallerin topraklardan bitki ve sulara ve oradan da insanlara transferi hem insan sağlığı riski değerlendirmesi hem de kirlilik kontrolü için büyük önem taşır. Kirli topraklarda kadmiyum (Cd), kurşun (Pb) ve çinko (Zn) gibi ağır metallerin biyoyarayışlılığının ve biyoerişebilirliğinin değerlendirilmesi, bu toprakları daha iyi yönetmek ve gelecekte tekrar kullanmak için mutlak gereklidir. Fitoremediasyon, toprak ve sudaki metal kirleticilerin uzaklaştırılması ya da daha zararsız hale getirmek için bitkilerin kullanıldığı, etkili, çevresel olarak ekoloji...