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Background and purpose: Today high blood pressure is considered as one of the most important public health problems and there is a high relationship between that and cardiovascular diseases. In Iran more than 15 percent of adults are seen with hypertension. The incidence of sudden death is more than two-thirds in patients with hypertension compared with those who have normal blood pressure. The prevalence of hypertension is high among professional drivers due to their sedentary lifestyle, poor nutrition, stress and tobacco consumption. The aim of this study was to determine the prevalence of hypertension and its relationship with risk factors among professional drivers. Materials and methods: This descriptive cross-sectional study was conducted in 400 drivers working in suburban parts of Mazandaran province. The data including systolic and diastolic blood pressure, age, experience, body mass index, and the BMI were recorded. Then the correlation of these variables with systolic and diastolic blood pressure was measured. The data was analyzed using Pearson's Chi-square test in SPSS. High blood pressure was defined as systolic blood pressure > 140 mmHg or diastolic blood pressure > 90 mmHg. Results: The results showed that 20% of drivers had high blood pressure and 53.2% were pre-hypertensive. The mean systolic blood pressure and diastolic blood pressure were 119.6 + 15/2 and 77.41 + 8.5, respectively. The drivers were 72% overweight or obese. Statistical tests showed significant linear correlation between age, experience, body mass index and hypertension (P< 0.05). Conclusion: The prevalence of high blood pressure was 20% among the studied population and a high percentage were pre-hypertensive. Prevention and control of hypertension is necessary to prevent drivers from entering pre-hypertension to hypertension stage. In order to reduce the risk factors, efforts should be made to improve their lifestyle and the best approach could be through educational programs provided by authorities.

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Background and purpose: Gender dysphoria is a disorder that causes problems for families and societies. This research compared the level of social adjustment between mothers of transgender children and mothers of normal children. The purpose of this study was to investigate whether having a transgender child has or has not a negative effect on social adjustment of mothers.

This research compared the level of social adjustment between mothers of transgender children and mothers of normal children. The purpose of this study was to investigate whether having a transgender child has or has not a negative effect on social adjustment of mothers.

Materials and methods: In a case-control study 80 mothers with transgender teenagers (n= 40) and normal children (n= 40) were randomly selected from those attending Tehran Psychiatry Institute. The Social Adjustment Scale (Weissman & Paykel) was used which investigates social adjustment in seven main areas.

Results: The results showed a significant difference between social adjustment in mothers of transgender children and mothers of normal children (P<0.001). We found no significant difference between social adjustment and demographic variables, age, mothers’ age, length of marriage, mothers’ educational level, number of children, and birth order.

Conclusion: In this study social adjustment of mothers of transgender children was less than that of mothers with normal children.

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Background and purpose: Oxidative stress is amongst the factors that change the parameters of sperm and embryo development. This study investigated the protective effects of vitamin E on sperm parameters and In Vitro Fertilization (IVF).
Materials and methods: In the present study, male mice were divided into four groups to recieve physiological saline (control group), PHZ, vitamin E +PHZ, and vitamin E.  Female mice were used for In Vitro Fertilization. Thirty five days after treatments, the male mice were euthanized and their sperm parameters were studied. Stimulating ovule development was done. The animals were euthanized, and then the ova were fertilized. Data analysis was conducted in SPSS applying ANOVA.
Results: Compared to the control group, the mean percentage of sperms with damaged DNA, lack of nuclear maturation, and abnormal morphology increased significantly in PHZ group, which was improved by antioxidants (P<0.05). In PHZ group, the mean percentage of fertility, blastocyst, and blocked embryos increased significantly compared to the control group (P<0.05). But considerable improvements were seen in these parameters after receiving vitamin E.
Conclusion: Current study showed that vitamin E could improve sperm indicators and embryological development in vitro. Therefore, it is recommended in order to improve the aforementioned parameters.

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 Background and purpose: Human gingival fibroblasts cultured on collagen membrane is an alternative treatment method in guided regeneration. This in vitro study aimed at evaluating and comparing the human gingival fibroblasts viability on two types of collagen-rich membranes.
Materials and methods: Human gingival fibroblast cells (HGF1-RT1) were cultured on two types of collagen-rich membranes, including Regen and CenoMembrane. After 24 and 72 hours, the MTT test was performed. ANOVA test and Post Hoc Tukey were applied to compare MTT mean values in different groups and times.
Results: After 24 and 72 hours, the highest rates of viability of fibroblast cells were observed in the control group and the Regen membrane, and the lowest viability was seen in the CenoMembrane group. Cell viability in control group was significantly higher than the CenoMembrane and in Regan membrane was significantly higher than the CenoMembrane (P<0.05). There were no significant differences between the Regen membrane and the control group (P>0.05).
Conclusion: Based on MTT assay, the viability of fibroblasts after 24 and 72 hours was higher in the Regen membrane compared with the CenoMembrane.