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T HIS research was done to find the effect of spirulina (Arthospira platensis) on some physicochemical parameters in common carp (Cyprinus carpio). Fish with an initial body weight of 510.3±7.02g were collected from a private farm in Khank Township, Sumeel District, Duhok Government, Iraq. Fish were separated into two groups (twenty fish in each group), the carp in the first group fed on pellets alone while the second fish group fed on pellets with 10 mg/kg spirulina for 90 days. Results; there was no significant change of morphological parameters in fish feeding with commercial spirulina pellets compared with control fish group. In contrast, a significantly increases in the average daily and total gain, the specific growth rate and the condition factor in the fish fed commercial pellets with spirulina compared with control fish. Regarding the complete blood pictures, a significantly higher of the red and white blood cells, hemoglobin, and hematocrit observed in spirulina fish compared with the first group while a significant decreases of the mean corpuscular hemoglobin, mean corpuscular volume and mean corpuscular hemoglobin concentration in fish feds commercial pellets with spirulina. Furthermore, highly significant differences were seen among lipid profile parameters with exception of significantly reduce of low-density lipoprotein in fish fed diets with spirulina. Moreover, significant increases levels of the total protein and globulin were observed in spirulina fish compared with the first group while a reduction of albumin level was noted. In addition, a significant reduction of the level serum enzyme activities of fish fed with commercial pellets with spirulina compared with the control fish. This study concludes that the diet with spirulina supplementation has a crucial roles in growing performances and hematological and biochemical parameters in fish.

P 53 is a 393 residue protein in human made up of five proposed domains, with which the central DNA binding domain with 100-300 sequences very important for the direct binding of p53 in the promoters of its target genes to specific response elements. P53 is a tumor suppressor gene with cellular stress like oxygen deficiency, oxidative stress, radiation and carcinogens substances, and its stimulated has major roles in translational regulation and feedback processes. A wide assortment of harm signals that relate a stability, post-translational alteration and recruitment of p53 to binding sites in chromatin which activate the p53 pathway. As a transcriptional activation, p53 mediates transcriptional changes which facilitate cell death, senescence or reversing and protective arrest of the cell cycle. P53 is a protein under intense investigation because it is necessary to prevent tumor, in human tumors have been found to deregulation of p53 activity. On this article study focuses on the mechanism of suppressive p53 effects in the response to any stress and correlation of the mutation p53 with different tumours.

2-Hydroxy Chalcone and its derivatives (compounds 1and 2) were used in a toxicity test on the larvae and adults of confused flour beetle Tribolium confusum (Du Val). Mortality tests were done by applying different concentrations (0.01, 0.02 and 0.04 ppm) on 2-Hydroxy Chalcone and its derivatives which were exposed by topical application with 5 µL of each compound and the data were recorded after 24 h of treatments. The mortality % of [7-Hydroxy-9-(pyridine-4-yl)-6H-benzo[C]chromen-6-one] in (compound 2) were 26.6, 50 and 76.67% and 16.67, 36.67 and 63.3% and 13.3, 23.3 and 36.6 % to 3rd, 5th instar larvae and adults, respectively. While in [ 3-thinyl-1-(2-hydroxynaphthyl) -1-propene] (compound 1), the mortality % were 23.3, 40 and 66.6% and 13.3, 30 and 56.6% and 6.6, 16.6 and 26.6 % to 3rd, 5th instar larvae and adults, respectively. The results indicated that (comp.2) was the most toxic one and (comp.1) was the least toxic to confused flour beetle when applied singly. The calculated LC50 values to (compound 2) were 0.019, 0.028 and 0.074 ppm to 3rd, 5th instar larvae and adults, respectively. While to (compound 1), the LC50 values were 0.025, 0.034 and 0.106 ppm to 3rd, 5th instar larvae and adults, respectively. The order of toxicity of the chemical compounds was 2 > 1. These chemical compounds can be used to control confused flour beetle.