Are health promoting lifestyles associated with pain intensity and menstrual distress among Iranian adolescent girls?

OBJECTIVE: The present study investigated the relationship between a health-promoting lifestyle and menstrual pain intensity and distress among adolescent girls in Qazvin. METHODS: A cross-sectional survey study using a two-stage sampling method was conducted. The participants (n = 986) were female high school students aged 14-19 years living in Qazvin. Random cluster sampling was used to recruit participants from schools and classes from each grade. An online survey was provided to all participants to complete. Data were collected using a Demographic and Menstrual Characteristics Checklist, the Visual Analogue Scale (VAS) to assess dysmenorrhea intensity, the Andresh Milsom Scale (AMS) to assess dysmenorrhea severity, the Moos Menstrual Distress Questionnaire (MMDS) to assess menstrual distress, and the Health-Promoting Lifestyle Profile (HPLP) to assess a health promoting lifestyle. Data were analyzed using an univariable linear regression model at a significance level of 0.05. RESULTS: The findings indicated that 421 participants (42.7%) experienced dysmenorrhea with a mean duration of 2.24 days (SD = 1.57) and a mean pain intensity of 4.62 on the VAS (SD = 2.87). The mean score on the menstrual distress on the MDDS was 13.55 (SD = 8.88) and the mean score on the HPLP was 2.55 (SD = 0.50). Based on the results of univariable linear regression, nutrition (ß=-0.18, p < 0.001) and exercise (ß=-0.17, p < 0.001) had the most significant effect on the severity of dysmenorrhea pain. Also, self-actualization (ß=-0.29, p < 0.001), stress management (ß=-0.25, p < 0.001) and nutrition (ß=-0.25, p < 0.001) had the most significant effect on menstrual distress. CONCLUSION: Based on these findings, it is suggested that (i) improving nutrition and exercise might reduce the severity of dysmenorrhea pain and (ii) improving self-actualization, stress management and nutrition might reduce the severity of menstrual distress. Overall, it seems that improving health-promoting lifestyle behaviors can help improve the severity of dysmenorrhea pain and menstrual distress among adolescent girls.

Stable and Antibacterial Magnesium-Graphene Nanocomposite-Based Implants for Bone Repair.

Magnesium (Mg)-based alloys are promising biodegradable materials for bone repair applications. However, due to their rapid degradation and high corrosion rate, Mg-based alloys are typically associated with in vivo infections and implant failure. This study evaluated the synergistic stability and anti-inflammatory properties that could potentially be achieved by the modification of the Mg alloy with graphene nanoparticles (Gr). Incorporation of low dosages of Gr (0.18 and 0.50 wt %) in a Mg alloy with aluminum (Al, 1 wt %) and copper (Cu, 0.25 wt %) was successfully achieved by a spark plasma sintering (SPS) method. Notably, the degradation rate of the Mg-based alloys was reduced approximately 4-fold and the bactericidal activity was enhanced up to 5-fold with incorporation of only 0.18 wt % Gr to the Mg-1Al-Cu matrix. Moreover, the modified Mg-based nanocomposites with 0.18 wt % Gr demonstrated compressive properties within the range of native cancellous bone (modulus of approximately 6 GPa), whereas in vitro studies with human mesenchymal stromal cells (hMSCs) showed high cytocompatibility and superior osteogenic properties compared to non-Gr-modified Mg-1Al-Cu implants. Overall, this study provides foundations for the fabrication of stable, yet fully resorbable, Mg-based bone implants that could reduce implant-associated infections.

The effect of selenium and zinc on CD4(+) count and opportunistic infections in HIV/AIDS patients: a randomized double blind trial.

Objectives: We assessed the effect of selenium and zinc supplementation on CD4 cell count and the risk of developing opportunistic infections.Methods: In a double blind clinical trial, 146 HIV(+) patients receiving combination antiretroviral therapy with CD4(+) >200/cubic millimeter were screened for comorbidities and opportunistic infections, and randomized to receive daily selenium (200 µg), zinc (50 mg) or placebo for 6 months, before a 3-month follow-up period. CD4 cell counts were measured in the 3th, 6th and 9th months. The serum selenium and zinc were measured in the 6th month. The incidence of opportunistic infection was assessed monthly for 6 months and at the end of the 9th month.Results: The final incidence of supplement deficiency for placebo, zinc and selenium were 46.7%, 44.7% and 50.0%, respectively. Overall compliance with supplementation was 99.42%. Although the changes from baseline were not statistically significant, zinc supplementation was significantly associated with reduced risk of opportunistic infections.Conclusion: Development of the opportunistic infections after zinc supplementation significantly decreased; however, significant improvement in CD4 count was not observed in this group.