جستجوی مقالات مرتبط با کلیدواژه « cellular phone » در نشریات گروه « پزشکی »

At present cellular phones have become very popular, raising concerns about their effect on the health of users. Some studies have shown that use of cellular phones gives rise to a decrease in salivary antioxidative potential. Therefore, the present study was undertaken to evaluate the effect of lycopene on salivary superoxide dismutase (SOD) and glutathione peroxidase (GPX) activities and the total antioxidative capacity (TAC) of the saliva in cellular phone users.

The present clinical trial was conducted on 20 volunteers with no oral diseases, who used cellular phones in Zahedan Dental faculty at 2017. The subjects’ salivary samples were collected before and one month after taking lycopene and the activities of salivary superoxide dismutase and glutathione peroxide and the total antioxidative capacity of the saliva were evaluated. Data were analyzed with SPSS 21. Wilcoxon signed rank was used to compare before and after measurmenrs.

The superoxide dismutase levels before and after taking lycopene were 108.37±16.18 and 138.16±20.8, respectively, with a statistically significant difference (P=0.001). The glutathione peroxidase levels before and after taking lycopene were 693.06±9.05 and 676.65±63.45 u/mL, respectively with a statistically significant difference (P=0.001), total antioxidant capacity before and after taking lycopene were 267.72±156.64 and 147.83±120.63 μmol/lit respectively with a statistically significant difference (P=0.001)

It seems that, use of lycopene in cellular phone uses resulted in an improvement of salivary antioxidative system, increasing the odds of elimination of free radicals by the saliva.

The objective of the current study is to assess the effectiveness of Mobile Short Message Service (SMS) intervention on education of basic self-care skills in patients with type 2 diabetes. Moreover, we aimed to determine whether delivering individually-tailored educational messages can be more effective than general educational messages.
A total of 150 patients with diabetes type 2 were randomized into three groups: tailored SMS group, non-tailored SMS group, and the control group. Biochemical parameters including HbA1c, FBS, lipid profile were evaluated for the three groups at baseline and after 12 weeks. Moreover, self-care Inventory (SCI), Diabetes Management Self-Efficacy Scale (DMSES) and Diabetes Self -Care Barriers assessment scale for Older Adults (DSCB-OA) were completed. In the tailored SMS group, each person received 75% of their messages based on the top two barriers to adherence that they had experienced and reported in their scale. In the non-tailored SMS group, random messages were sent to every patient.
After12 weeks, although HgA1c levels did not significantly change, significant decline was observed in FBS and mean BMI in both intervention groups. Mean SCI-R scores significantly increased and mean DSCB and DMSES scores significantly decreased in both tailored and non-tailored SMS groups. In the control group, mean SCI-R scores decreased and mean DSCB and DMSES scores significantly increased (P Sending short text messages as a method of education in conjunction with conventional diabetes treatment can improve glycemic control and positively influence other aspects of diabetes self-care. According to our findings, sending SMS regularly in particular times appears to be as effective as sending individually tailored messages.

MSc of Health Education, Department ofPublic Health, School of Health, Hamadan University of Medical Sciences, Hamadan, Iran, [email protected] Study Type: Research Article | Subject: Special Article abstract: Cell phone usage during driving has become a threat to traffic safety. This study aimed to determine the effectiveness of an educational program based on the health belief model to reduce cell phone usage during driving in taxi drivers of Tuyserkan. In this quasi-experimental study, 110 taxi drivers younger than 35 years were randomly divided into two experimental and control groups in Tuyserkan, Iran. Data was collected using a questionnaire including the health belief model constructs, knowledge, behaviors of using cell phone and demographic variables. The questionnaires were self-reported. Intervention was three sessions applied in the experimental group. Both groups were followed for two months after the intervention. Finally, date analysis was performed using SPSS- 19 by Chi-square, Independent T-test, Paired T-test and McNemar. The mean scores for the constructs of health belief model (perceived susceptibility, severity, barriers, perceived benefits, self-efficacy and cues to action), knowledge and desired behaviors about the use of cell phone during driving showed no significant differences between the two groups before the intervention. After the educational intervention, significant differences were observed in experimental group compared to control group. After educational intervention, cell phone usage reduced by 35.14% in the experimental group. An educational intervention based on the health belief model could reduce cell phone usage during driving in taxi drivers.

With regard to wide spectrum application of microwave in human life، its biological effects on tissues are still under debate. The aim of this study was t o determine the effects of 950 MHz microwave radiation on morphometric changes of prostate in rabbit. In this experimental study، 18 New Zealand male rabbits (11-13 weeks old) were randomly divided into control، 3 W and 6 W groups in Qazvin University of Medical Sciences in 2012. The rabbits in the experimental groups were exposed to simulated 950 MHz and 3 or 6 W microwave radiation 2 hours a day for 2 weeks. After one week rest، the rabbits were sacrificed using anesthetic drugs and the prostate tissue samples were prepared. After preparing microscopic slides، villous height، villous thickness and muscle layer thickness were measured. Data were analyzed using ANOVA and Tukey’s test. The villous height was significantly decreased in the 3 W group compared to the control and 6 W groups while it was significantly increased in the 6 W group compared to the control group. The villous thickness was increased in both experimental groups compared to the control group but the difference was statistically significant for 6 W group. Increased villous thickness was not different between the experimental groups. The muscle layer thickness was significantly increased in both experimental groups compared to the control group. With regards to the results، it seems that the microwave radiation with 950 MHz frequency has negative effects on morphometric changes of prostate in rabbit.

Today، the use of cellular phones has become an inevitable part of people’s life. Some previous studies have shown the harmful effects of radiation of cellular phone on human health. The aim of this study was to determine the effects of electromagnetic radiation of cellular phone on parameters of human semen analysis. This prospective clinical trial was carried out on 50 semen samples of men who referred to Noor laboratory of Ahvaz، Iran in 2013. Before semen analysis، each semen sample was divided into two equal volumes (case and control). A current cellular phone in active mood was placed at a distance of 2. 5 cm from semen samples of case group for 60 minutes. No intervention was performed for samples of control group. After 60 minutes، semen analysis was done for all samples. Sperm count، concentration of motile and functional sperms and sperm morphology were compared in both groups. Data were analyzed using SPSS software version 16، Kolmogorov-Smirnov and t-test. P value less than 0. 05 was considered significant. The differences of sperm morphology (p=0. 11) and total sperm count (p=0. 12) were not significant in both groups. Motile and functional sperms concentration in case group were lower than control group (p=0. 001). It seems that cellular phones have negative effects on human semen analysis and reduces total sperm count and functional sperms.

Electromagnetic waves of cell -phone as an integral part of life make different biological effects.

The purpose of this study was to investigate the effect of cell- phonelike waves on a mouse epilepsy model induced by pentylenetetrazole.

This experimental study was conducted on 75 male mice (weighing 25-30 g) that were divided to 5 groups (n=15). Except for control group، they were exposed to 950 MHz magnetic waves with an antenna power density of 3 or 6 mW/cm2 and modulation of 100 or 217 KHz for a week. Then، 75mg/Kg of pentylenetetrazole was injected intraperitoneally to all mice. Seizure onset، duration of tonic and tonic-clonic seizures and total seizure duration (from start to finish of the seizure) were measured. Data were analyzed by ANOVA and Tukey test.

The seizure onset in treatment groups was not significantly different from control group. The duration of tonic seizures was significantly increased in the group which was exposed to 6 mW/cm2–100 KHz waves (P<0. 01). The duration of tonic-clonic seizures was significantly increased in the group which was exposed to 6 mW/cm2-217 KHz waves (P<0. 05). The total seizures duration was also significantly increased in the groups which were exposed to 6 mW/cm2 and 217 KHz waves (P<0. 01).

Electromagnetic waves of cell phone may increase duration of seizures. In this process، the effect of wave''s power is more than wave''s modulation. It is recommended for those prone to seizure to minimize their exposure to electromagnetic waves.