Seyed Amir Teymouri, Amir Parviz Salati, Abdolali Movahedinia, Hossein Pasha Zanoosi, Soleiman Hasanpour,
Volume 4, Issue 3 (12-2017)
Abstract
Fish oil in the diet of fish is constantly at the risk of oxidation. In this study, the effects of feeding sturgeon hybrid (Huso huso ♂ ×Acipenser ruthenus ♀) with different levels of oxidized fish oil (OFO) on thyroid hormones were investigated. Three experimental diets were made by replacing 0 (control), 50 and 100% OFO were made. Ninety hybrid sturgeon, with the initial weights of 212.6 ± 07g were distributed in 9 fiberglass tanks (2 m3) randomly after 2 weeks of adaptation with experimental conditions. Feeding was performed three times daily (08:00, 14:00 and 20:00) for 6 weeks for satisfaction. At the end of the period, blood samples were taken and their serum was separated. Serum thyroxine and triiodotyronine were measured by radioimmunoassay in blood samples. Serum thyroxine, triiodotyronine and thyroxine/triiodotyronine level showed no significant change related to dietary OFO. Our findings showed that dietary-oxidized oil had no effect on blood thyroid hormones levels.
Ms Afsaneh Teymouri, Dr Atefe Amirahmadi, Dr Reza Naderi, Dr Fatemeh Salimi, Dr Reza Sheikhakbari-Mehr,
Volume 12, Issue 1 (3-2025)
Abstract
The identification and introduction of medicinal plants hold significant importance in modern life. The genus Pycnocycla, belonging to the Apiaceae family, includes eight endemic species in Iran. P. spinosa has attracted attention due to its medicinal properties. This study aims to investigate the effect of three habitats (the Damghan, Semnan, and Kerman city) on the antimicrobial properties of extracts obtained from Pycnocycla spinosa using different solvents. To examine the antimicrobial properties, methanolic, ethyl acetate, and hexane extracts at a concentration of 2 mg/ml were tested against two pathogenic Gram-negative bacteria, Yersinia enterocolitica and Salmonella enterica, using the agar disk diffusion method. The results indicated that the extracts had varying effects on the bacteria. Additionally, the different geographical regions of Iran, due to their distinct climatic conditions, exhibited varying effects on the bacteria. Extracts from Kerman, especially those using methanol and ethyl acetate as solvents, showed the highest antimicrobial activity against Salmonella enterica. Therefore, the type of solvent and habitat can significantly influence the antimicrobial properties of plants.
