maryam rafati
@iau.ir
Assistant Professor
Islamic Azad University
Scopus Publications
Scopus Publications
Sahar Rezayan, Majid Pourbalighy, Maryam Rafati, and Rokhshad Hejazi
OAIMDD - EcoZone Publishing House
M. Zaeimdar, forouzan Khalilnezhad sarab and M. Rafati
Background and Aim: Visual contamination is a kind of environmental pollution that over time, its effects and consequences are increasing, and this pollution may gradually provide a good ground for nerve stress and psychological problems. Method: In this study, we tried to study the status of visual contamination and its impact on the health of citizens in two urban areas of one and twelve using the distribution of questionnaires and field method. Results: The results of the analysis of the data obtained from the questionnaire revealed a significant relationship between visual contamination and four health indicators of citizens including physical signs, social function, anxiety, insomnia and depression. This means that wherever the pollution is higher, the health of citizens is at a lower level. Conclusion: Accordingly, the average index of physical symptoms and anxiety - insomnia in district 1 in a healthy condition and in the twelve region is in a mild injury situation. Also, the average social function index and depression in both regions indicate mild injury and favorable health status in them, and overall, the results indicate that the general health of District 1 in desirable situation and the twelve regions are in an unfavorable situation.
Fatemeh Golrizkhatami, Forough Farsad, and Maryam Rafati
IOS Press
Saeed Zahedi, Alireza Mirvaghefi, Maryam Rafati, Gholamreza Rafiee, Bagher Mojazi Amiri, Mehdi Hedayati, Changiz Makhdoomi, and Musa Zarei Dangesaraki
Informa UK Limited
This study reports the 96-h LC50 value and tissue copper (Cu) levels and biochemical changes in juvenile fish (Acipenser persicus) exposed to 0.026 mg/l ambient Cu for 1, 7 and 14 days. It then examined the recovery of the same parameters after placing the juvenile fish in clean water for a further period of 28 days. The intestine, kidney and gill Cu levels, plasma glucose, total protein, triglyceride, cortisol, triiodothyronine and thyroxine concentrations, liver protein contents, liver catalase, superoxide dismutase (SOD) and glutathione S-transferase activities were studied. The 96-h LC50 value of Cu was 0.502 mg/l for juvenile A. persicus. The results indicate that Cu exposure produced significant accumulations of Cu in gills and kidney over the treatment time. Sublethal dose of Cu resulted in a short-term increase in plasma glucose, total protein and cortisol levels that decreased with time. After the 28-day recovery phase, there were significant differences in kidney Cu levels and triglyceride concentrations as well as SOD activities between recovery fish treatments and their control groups on day 42. The 28-day recovery phase caused significant decreases in total protein levels and SOD activities of Cu-exposed fish on day 42 compared to day 14. The results suggest that 28 days are insufficient for complete recovery to Cu exposure by juveniles and a longer period would be required for full recovery. Moreover, the study showed that the recovery phase following Cu exposure could change biochemical parameters to levels that are not close to those seen during exposure or control levels.
Saeed Zahedi, Alireza Mirvaghefi, Maryam Rafati, and Mehdi Mehrpoosh
Springer Science and Business Media LLC
The purpose of the present study was to evaluate the effects of exposure to waterborne sublethal cadmium (Cd) concentration on juvenile Persian sturgeon, Acipenser persicus. Fish were exposed to 0.68 mg/l of Cd for 1, 7, and 14 days, and metal bioaccumulations, biochemical responses, and gill ions were investigated. There were significant differences (p < 0.05) in the kidney (1, 7, and 14) and gills (7 and 14) for Cd concentrations between the control and treatment groups. Also, kidney Cd concentrations were significantly higher (p < 0.05) at metal treatments on day 14 in comparison to day 1. Results showed that there were significant differences (p < 0.05) in plasma glucose and cortisol concentrations between the experimental and control groups on day 1 only, and at metal treatments, a significant decrease (p < 0.05) was observed on days 7 and 14 compared to day 1. No significant alterations were observed in plasma and liver protein contents during the course of the study. Neither triiodothyronine or thyroxine levels nor liver catalase or glutathione-S-transferase activities changed significantly with sublethal dose and with the time. In contrast, liver superoxide dismutase activities were significantly decreased (p < 0.05) at Cd treatments both over the control group and during Cd exposure on days 7 and 14. Finally, a comparison between the groups revealed no differences in gill ion levels for 2 weeks. This study demonstrated that sublethal dose of Cd was stressful for Persian sturgeon and resulted in rapid changes in some of the biochemical parameters.