Florin Drăgan, Ørnulf Nordseth, Laurențiu Fara, Constantin Dumitru, Dan Crăciunescu, Vlad Muscurel and Paul Sterian
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Laila Mesrar, Mariam Akdim, Mohamed Lakrim, Omar El Aroussi, Iatimad Akhrif and Raouf Jabrane
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M. Janmohammadi, M. Fattahi, N. Sabaghnia and M. Nouraein
In Mediterranean semi-arid regions major constraints impinging on agricultural development are deficiency of water and nutrient depleted soils. The problem of enhancing crop yield in these areas is widely distinguished as a challenge. In order to evaluate the integrated application of urea fertilizer (0, 160, and 320 kg ha−1) and nano-metal oxide (Fe2O3, ZnO, and CuO) on safflower growth performance, a field experiment was carried out in the Baneh district, a semi-arid region in Western Iran. Urea fertilizer significantly increased the plant height (11%), canopy width (8%), ground cover percentage (6%), plant dry weight (35%), number of secondary branches (16%), seeds number per head (19%), and total seed yield (38%). However, the higher application of urea fertilizer resulted in a significant decrease in wrinkled seed percentage (3.25%), harvest index (2.62%), and thousand seed weight (2.67%). Also, nano-metal oxides significantly affected morphological traits and yield components. Mean comparison revealed that the best performance was obtained by the integrated application of 320 kg urea fertilizer and nano-Fe or nano-Zn. Overall, the present research highlighted the necessity of balanced and integrated application of macronutrients and micronutrient fertilizers for sustainable safflower production in semi-arid regions of Western Iran.
Prathima Sindhu, Beena Shetty, K Sudha and Gayathri Rao
Role of Redox Metals, Oxidative Protein Products and Antioxidant Potentials of Thiols in Diabetic Retinopathy
Oxidative stress has been proved in the pathogenesis of diabetes mellitus (DM) and diabetic retinopathy (DR) not only by the reactive oxygen species (ROS) but also due to non-enzymatic protein glycosylation, auto-oxidation of glucose, impaired glutathione metabolism, alteration in the antioxidants and advanced oxidative protein product formation. The current study was undertaken to establish the relationship between iron, copper and antioxidants like reduced glutathione (GSH), total thiols, and advanced oxidation protein products (AOPP) as well as total protein and albumin. The study group consisted of a total of 90 subjects which included non-diabetic healthy controls (n=30), diabetes mellitus patients (n=30), and diabetic retinopathy patients (n=30). All the parameters were measured using spectrophotometric methods. AOPP levels showed a very highly significant increase in DR patients and in DM patients compared to normal controls, the AOPP levels being higher in the DR compared to the DM patients (p= 0.001). The levels of thiols showed a very highly significant decrease in DR and DM as compared to normal subjects. The total proteins level showed a very highly significant decrease (P = 0.001) in DR and DM compared to normal. There was no change in the level of albumin. A significant increase in the levels of iron was observed in DR when compared to DM and control. The levels of copper in DR showed a very highly significant increase when compared to DM and controls (p = 0.001). Our study indicates a possible increase in the copper and iron-mediated generation of ROS thereby leading to increased consumption of antioxidants in the body.
Copper oxide and cobalt oxide (Co3O4, CuO) nanocrystals (NCs) have been successfully prepared using microwave irradiation. The obtained powders of the nanocrystals (NCs) were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), thermogravimetric (TGA) analysis and Fourier-transform infrared spectroscopy. The obtained results confirm the presence of both nanooxides which have been produced during chemical precipitation using microwave irradiation. TEM micrographs have shown that the obtained nanocrystals are characterized by high dispersion and narrow size distribution. The results of X-ray diffraction confirmed those obtained from the transmission electron microscope. Optical absorption analysis indicated the direct band gap for both kinds of the nanocrystals.
Abdelali Merah, Abdenabi Abidi, Hana Merad, Noureddine Gherraf, Mostepha Iezid and Abdelghani Djahoudi
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