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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Advances in Environmental Health Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Nanoparticles,Copper,Hyperplasia,Gills,Goblet cells
- چکیده:
- چکیده انگلیسی: The aim of the present study was to investigate the effect of copper oxide nanoparticles (CuO-NPs) and copper ions (Cu++) on guppy (Poecilia reticulata), in order to assess Cu uptake in the gill, and histopathology of gill and intestinal organs in semi-static regimes for 10 days. Guppy fish were assigned into three groups; one control group, and two experimental groups receiving 20 µg/l of either Cu++ or CuO-NPs in a semi-static aqueous culture for 10 days. Gill and intestinal tissue samples were obtained under a standard protocol for further histopathological examinations. The notable alterations observed in gill tissues in the experimental groups were aneurism, fusion, gill epithelial hyperplasia, increased mucous secretion, and necrosis. Noticeable anomalies in intestinal tissue were increase in the number of goblet cells, swelling of goblet cells, degeneration, vacuolation, necrosis, and erosion. Moreover, copper accumulation in gill tissue in the Cu++ treated group was higher than that in the CuO-NPs treated group. In contrast, the severity of histopathological damages in gill and intestinal tissues was greater in the CuO-NPs experimental group.
- انتشار مقاله: 14-10-1394
- نویسندگان: Borhan Mansouri,Raouf Rahmani,Nammam Ali Azadi,Behrouz Davari,Seyed Ali Johari,Pedram Sobhani
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Advances in Environmental Health Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Nanoparticles,Copper,Hyperplasia,Gills,Goblet cells
- چکیده:
- چکیده انگلیسی: The aim of the present study was to investigate the effect of copper oxide nanoparticles (CuO-NPs) and copper ions (Cu++) on guppy (Poecilia reticulata), in order to assess Cu uptake in the gill, and histopathology of gill and intestinal organs in semi-static regimes for 10 days. Guppy fish were assigned into three groups; one control group, and two experimental groups receiving 20 µg/l of either Cu++ or CuO-NPs in a semi-static aqueous culture for 10 days. Gill and intestinal tissue samples were obtained under a standard protocol for further histopathological examinations. The notable alterations observed in gill tissues in the experimental groups were aneurism, fusion, gill epithelial hyperplasia, increased mucous secretion, and necrosis. Noticeable anomalies in intestinal tissue were increase in the number of goblet cells, swelling of goblet cells, degeneration, vacuolation, necrosis, and erosion. Moreover, copper accumulation in gill tissue in the Cu++ treated group was higher than that in the CuO-NPs treated group. In contrast, the severity of histopathological damages in gill and intestinal tissues was greater in the CuO-NPs experimental group.
- انتشار مقاله: 14-10-1394
- نویسندگان: Borhan Mansouri,Raouf Rahmani,Nammam Ali Azadi,Behrouz Davari,Seyed Ali Johari,Pedram Sobhani
- مشاهده
- جایگاه : پژوهشی
- مجله: International Journal of Pediatrics
- نوع مقاله: Journal Article
- کلمات کلیدی: Behavior,Students,fear,Oral health,Trans-theoretical Model
- چکیده:
- چکیده انگلیسی: Background: Fear of dental care prevents dental cleaning behavior and increases the prevalence of dental caries. This study was conducted to determine the effect of Trans-Theoretical Model constructs and fear of dental care on the dental cleaning behavior of students.
Materials and Methods: This cross-sectional study was carried out in Sanandaj city, Iran, in 2017. Using multi-stage sampling, 1,344 male and female students were included in the study. They completed a self-report questionnaire, including demographic information, Trans-Theoretical Model constructs and fear of dental care. Data were analyzed using SPSS software (version 22.0).
Results: A total of 1,344 male and female students with a mean age of 15.22±2.64 years participated in the study; from the perspective of students, dental caries (88.4%) was the most frequent illness and tongue inflammation (0.6%) was the least frequent disease.Overall, 32.9% of the students used no tools for cleaning their teeth. Fear of dental care and perceived barriers were reduced significantly during the stages of dental cleaning behavior (p<0.05) and perceived self-efficacy and perceived benefits were significantly increased (p<0.001). The odds of dental cleaning behavior increased with self-efficacy (OR=1.34, 95%CI=1.22-1.48, p<0.05), and decreased with fear of dental care (OR=0.90, 95%CI=0.80-0.98, p<0.01).
Conclusion: The findings showed dental cleaning behavior among students was at a low level and various factors such as perceived self-efficacy, benefits and barriers and fear of dental care influenced its performance.- انتشار مقاله: 21-02-1398
- نویسندگان: Leila Allahqoli,Vinnaras Nithyanantham,Azam Rahmani,Arezoo Fallahi,Marzieh Fathi,Nammam Ali Azadi,Tahereh Pashaei,Thomas Volken
- مشاهده
- جایگاه : پژوهشی
- مجله: Addiction and Health
- نوع مقاله: Journal Article
- کلمات کلیدی: Substance abuse,Sexual risk behaviors,Condoms,Sexually Transmitted Infections,Men
- چکیده:
- چکیده انگلیسی: Background: We aimed to investigate risky sexual behaviors (RSBs) and condom use barriers in Iranian men with substance use disorders (SUDs).Methods: Of the total 1800 outpatient drug free (ODF) and methadone maintenance treatment program (MMTP) active centers in Tehran, Iran, six were selected to participate in the current study. Data were collected (n = 300 men) using three questionnaires including a demographic questionnaire, the Risky Sexual Behavior Questionnaire (RSBQ), and the Condom Barriers Scale (CBS). The statistical software R, analysis of variance post hoc and multivariate analysis of variance (MANOVA) logistic regression tests were used in data analysis.Findings: The majority, (n = 194, 64.7%) reported at least one lifetime episode of RSBs. Compared to married participants (23.1%), 88.5% of single and 87.0% of divorced men had a history of RSB. Generally, the lowest and highest subscale scores of the CBS were related to sexual experience (2.60 ± 0.71) and access/availability structure (3.77 ± 0.54), respectively. The results of MANOVA analysis showed that there was a statistically significant difference between the CSB subscales based on the participants' education and marital status (P < 0.001). Only the partner barrier subscale had a significant negative relationship (P = 0.003) with RSB.Conclusion: Sexual dynamic of Iranian men with SUDs is different. Barriers to condom use seem to be socio-culturally determined. Culturally acceptable strategies need to be utilized in Iranian clinical settings reaching beyond simply condom accessibility for this at risk population.
- انتشار مقاله: 13-04-1396
- نویسندگان: Effat Merghati-Khoei,Zahed Rezaei,Davood Shojaei-Zadeh,Nammam Ali Azadi,Shahnaz Rimaz,Alireza Bayat,Saeedeh Moayedi-Nia,Sanaz Omati,Farahnaz Salimi,Jeffrey Korte,Therese Killeen,Minoo Mohraz
- مشاهده