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Hadi Eftekhari, Alireza Jahandideh, Ahmad Asghari, Abolfazl Akbarzadeh and Saeed Hesaraki

Abstract

Introduction: In recent years, the use of bone scaffolds as bone tissue substitutes, especially the use of such as hydroxyapatite and tricalcium phosphate, has been very popular. Today, the use of modern engineering techniques and advances in nanotechnology have expanded the use of nanomaterials as bone scaffolds for bone tissue applications.

Material and Methods: This study was performed on 60 adult male New Zealand rabbits divided into four experimental groups: the control group without any treatment, the second group receiving hydroxyapatite, the third group treated with β-tricalcium phosphate, and the fourth group receiving nanocomposite polycaprolactone (PCL) scaffold. In a surgical procedure, a defect 6 mm in diameter was made in a hind limb femur. Four indexes were used to assess histopathology, which were union index, spongiosa index, cortex index, and bone marrow.

Results: The results showed that nanocomposite PCL and control groups always had the respective highest and lowest values among all the groups at all time intervals. The histopathological assessment demonstrated that the quantity of newly formed lamellar bone in the nanocomposite PCL group was higher than in other groups.

Conclusion: All these data suggest that PCL had positive effects on the bone healing process, which could have great potential in tissue engineering and clinical applications.

Open access

Hossein Ebrahimi, Mohammad Asghari Jafarabadi, Hossein Namdar Areshtanab, Maryam Pourabbas, Ahmad Dehghan and Maryam Vahidi

Summary

Stigma can complicate people’s mental health problems by affecting different sides of personal life, increasing negative attitudes, causing discriminatory behavior towards them, and reducing the chances of recovery and returning to normal life. This research aims to compare the stigma of mental illness among nurses working in psychiatric and non-psychiatric wards in Tabriz University of Medical Sciences. A total of 240 nurses participated in this descriptive and analytic study. The data were collected using a demographic questionnaire and the Community Attitudes towards the Mentally Ill (CAMI) Scale, which is a 40-item self-report questionnaire. All data were analyzed using SPSS 13. The majority of nurses have a medium level of stigma toward people with mental illness, and there is no significant relation between the type of wards and mean stigma scores. After eliminating factors such as mental illness in nurses and their families, it seems that only working with people with mental illness in psychiatric wards is not enough to create a positive attitude toward them. Additionally, the less physical activity and taking advantage of legal benefits of work hardship for psychiatric nurses, low income, and stigma toward psychiatric nursing, probably may make a difference in inclining to work in psychiatry ward between the two groups in spite of relatively equal stigma scores.