sara azarakhsh

  Alpha-actinins are members of the family of actin-binding proteins that play a key role in the survival and regulation of cytoskeletal structure, especially muscle cells. Therefore, the aim of this study was to investigate the effect of endurance training on the expression of alpha-actinin 2 and 3 proteins in the skeletal muscles of the plantaris and Gastrocnemius muscle of Wistar rats.

For this purpose, 16 male Wistar rats were divided into 2 groups: endurance training and control.  Endurance training groups for 12 weeks, 5 sessions per week at a speed of 12 to 22 meters per minute and with a slope of zero degrees and observed the principle of overload training, worked on the treadmill. Western blotting was used to measure alpha-actinin 2 and 3 of the plantaris muscles and Gastrocnemius muscle. Independent t-test was used to analyze the data and the significance level was considered 0.05.

The results of independent t-test showed a significant difference in alpha-actin 2 (p = 0.001), alpha-actin 3 (p = 0.001) in the Gastrocnemius muscle and alpha-actin 2 (0.006). Alpha-actin 3 (p = 0.001) was observed in plantaris muscle.

In general, endurance training increases the alpha-actin protein 2 and 3 in the skeletal muscles of male rats, and it can be said that due to the response of these proteins to the control group, this type of exercise is a good stimulus for muscle adaptation.

In this study CoFe2O4 nanostructures were synthesized via a facile precipitation method without using any surfactant and capping agent in solvent of water. Then Zinc sulphides with various doping metals (Ni, Co , Cu and Ag) were prepared. Finally metal doped CoFe2O4-ZnS nanocomposites were made by a fast chemical procedure. The prepared products were subjected to various analyses of structural (XRD), optical (UV–visible) , the formation of bonds using the (FTIR) spectrometry and surface layer morphology via SEM. Vibrating sample magnetometer shows the ferromagnetic property of the ferrite nanostructures. The photocatalytic behaviour of CoFe2O4-ZnS-metal doped nanocomposites was evaluated using the degradation of three azo dyes (acid violet, acid blue, methyl orange) under ultraviolet light irradiation. The results introduce a nanocomposite with applicable magnetic and photocatalytic performance.Vibrating sample magnetometer shows the ferromagnetic property of the ferrite nanostructures. The photocatalytic behaviour of CoFe2O4-ZnS-metal doped nanocomposites was evaluated using the degradation of three azo dyes (acid violet, acid blue, methyl orange) under ultraviolet light irradiation. The results introduce a nanocomposite with applicable magnetic and photocatalytic performance.

In this research cobalt ferrite (CoFe2O4) nano-crystalline powders were prepared by simple chemical precipitation method using cobalt sulfate. The CoFe2O4 nanoparticles were characterized by X-ray diffraction, scanning electron microscopy and Fourier transform infra-red spectroscopy. The crystallite size of CoFe2O4 nanoparticles was calculated by Debye–Scherrer formula. The effect of precursor, capping agent, temperature and concentration on the morphology and particle size of the products was investigated. Starch and gelatin as green, safe, water-soluble and cost-effective capping agents were used. Alternative gradient field magnetometer confirms dominant influence of temperature on the morphology and magnetic domains. Results approve magnetic samples exhibit either ferromagnetic or super-paramagnetic behavior.