Increased serum lipofuscin associated with leukocyte telomere shortening in veterans: a possible role for sulfur mustard exposure in delayed-onset accelerated cellular senescence.

BACKGROUND: Sulfur mustard (SM) is a toxic gas that causes chronic inflammation and oxidative stress leading to cell senescence. This study aimed to evaluate two indicators of biological aging (i.e., serum lipofuscin level and leukocyte telomere length) and assess their relationship based on the severity of SM exposure in the long term. METHODS: The study was performed on two groups of male participants. 1) SM-exposed group (exposed to SM once in 1987), 73 volunteers. 2) Non-exposed group, 16 healthy volunteers. The SM-exposed group was categorized into three subgroups based on the severity of SM exposure and body damage (asymptom, mild, and severe). The blood sample was prepared from members of each group. The serum lipofuscin, TGF-ß, malondialdehyde (MDA), c-reactive protein (CRP), and leukocyte telomere length (TL) were measured in all participants. RESULTS: The MDA level was increased in the SM-exposed group (mean = 39.6 µM, SD = 16.5) compared to the non-exposed group (mean = 21.1 µM, SD = 10.3) (P < 0.05). The CRP level was also increased in the SM-exposed group (mean = 5.12 mg/l, SD = 3.36) compared to the non-exposed group (mean = 3.51 mg/l, SD = 1.21), while the TGF-ß level was decreased (P < 0.05) in the SM-exposed group (mean = 52.6 pg/ml, SD = 18.7) compared to the non-exposed group (mean = 68.9 pg/ml, SD = 13.8). The relative TL was shorter in the SM-exposed group (mean = 0.40, SD = 0.28) than in the non-exposed group (mean = 2.25, SD = 1.41) (P < 0.05). The lipofuscin level was higher in the total SM-exposed group (mean = 1.44 ng/ml, SD = 0.685) than in the non-exposed group (mean = 0.88 ng/ml, SD = 0.449) (P < 0.05). The MDA and CRP levels were increased in the SM-exposed subgroups of asymptom, mild, and severe than the non-exposed group, while TGF-ß level and TL were decreased in those subgroups. The lipofuscin level was higher in the SM-exposed subgroups of mild and severe than in the non-exposed group. The regression analysis determined a negative correlation between lipofuscin level and TL. The lipofuscin/TL ratio was higher in the total SM-exposed group (mean = 6.36, SD = 5.342) than in the non-exposed group (mean = 0.51, SD=0.389). This ratio was also higher in the SM-exposed subgroups of asymptom, mild, and severe than in the non-exposed group. The lipofuscin/TL ratio did not differ between mild and severe subgroups. CONCLUSION: The delayed toxicity of SM is associated with chronic oxidative stress, continuous inflammatory stimulation, increased lipofuscin, and telomere shortening. Future studies are needed to verify the suitability of serum lipofuscin to telomere length ratio in determining the severity of SM toxicity.

Concomitant use of relative telomere length, biological health score and physical/social statuses in the biological aging evaluation of mustard-chemical veterans.

Sulfur mustard (SM) is a toxic gas that has been used as a chemical weapon in wars. After many years, SM-exposed people are still suffering from its side effects such as biological and premature aging. This study was aimed to evaluate biological aging rate via involving biological health scoring (BHS), relative telomere length (TL) and different physical/social variables i.e. marital and smoking statuses, body mass index, salary and educational levels. BHS was calculated according to measurement of 18 biomarkers related to function of four physiological systems (endocrine, inflammatory, cardiovascular and metabolic systems) and two organs (liver and kidney). The volunteers were 442 individuals exposed to SM gas in 1987 and 119 healthy individuals as non-exposed group. Each group was divided based on leukocyte relative TL (short, intermediate and long). Our data showed an inverse correlation between BHS and relative TL in two groups. The BHS was significantly higher in SM-exposed group than non-exposed group, especially in the participants with short and intermediate TL. The BHS had also a positive correlation with smoking and BMI parameters, and a negative correlation with salary and educational levels in the participants with shorter telomeres; and SM strengthened these correlations in the shorter telomeres. It is concluded that the higher BHS along with shorter relative TL that are indices for lower health quality and biological aging, could be used in the health evaluation of non- and SM-exposed people; and involving of BHS, TL and physical/social covariates could be useful to make this evaluation more accurate.

Maternal deprivation effect on morphine-induced CPP is related to changes in opioid receptors in selected rat brain regions (hippocampus, prefrontal cortex, and nucleus accumbens).

Early-life environmental conditions affect offspring's development. Maternal deprivation (MD) can induce persistent changes that give rise to neuropsychiatric diseases including substance abuse disorders. However, long-lasting mechanisms that determine vulnerability to drug addiction remain unknown. We hypothesized that MD could induce changes in Opioid system, HPA (hypothalamic-pituitary-adrenal) axis, and BDNF (brain-derived neurotrophic factor), so may be involved in the drug abuse in later life. Male offspring of Wistar rats (n = 8 per group) were subjected to 3 h of daily MD during postnatal days 1-14. In adulthood, morphine-induced CPP (conditioned place preference) was investigated using two doses of morphine (3 and 5 mg/kg). Serum corticosterone level was measured by ELISA method. The expression level of genes in selected brain regions (hippocampus, prefrontal cortex, and nucleus accumbens) was determined by qPCR (quantitative PCR). A greater morphine-induced CPP was observed in MD rats with 3 and 5 mg/kg morphine compared to controls. MD group had a higher corticosterone level. A significant decrease was observed in the expression of BDNF gene (in all of the selected brain regions) and GR (glucocorticoid receptor) gene (in the hippocampus and nucleus accumbens) in MD rats. Also, a significant increase in the expression of µ Opioid receptor (in all of the selected brain regions) and κ Opioid receptor (in the prefrontal cortex and nucleus accumbens) was observed in MD rats. Our results suggest that MD induces alterations in the HPA axis function, BDNF level, and Opioid receptors system that enhance vulnerability to morphine at adulthood.

Sulfur mustard and biological ageing: A multisystem biological health score approach as an extension of the allostatic load in Sardasht chemical veterans.

BACKGROUND: Mustard gas as a chemical weapon has been used in wars and its long-term side effects are substantial in the human body. This study was aimed to apply an extension of allostatic load, known as synthetic biological health score (BHS), including the wear-and-tear of four physiological systems (endocrine, inflammatory, cardiovascular and metabolic systems) and two organs (liver and kidney) to estimate biological aging caused by sulfur mustard (SM) gas poisoning. METHODS: The plasma samples were prepared from two following groups of people; 1) 446 individuals exposed to SM gas in 1987. 2) 115 healthy members, at the same range of age and residence, as the non-exposed group. These people were chosen from the same patients' families and have not had any exposure to SM or pulmonary dysfunction. To estimate BHS, 18 blood-derived biomarkers of the mentioned systems and organs were measured and the relative contribution of many social and body parameters across the age groups was explored. RESULTS: It was revealed, in BHS calculation, the cardiovascular system had the most effect. Also, in the SM group, BHS was significantly higher than in the control group. This feature has a positive correlation with physical parameter (BMI) and a negative correlation with social parameters (salary and educational levels). CONCLUSION: The multisystem BHS could be useful in the evaluation of biological aging due to SM exposure. Social (education, good-paying job) and physical (BMI) parameters could influence BHS and the higher BHS indicates the progress of biological aging due to mustard gas.

Effects of Viola odorata as an Add-On Therapy on Insomnia in Patients with Obsession or Depression: A Pilot Randomized Double-Blind Placebo-Controlled Trial.

Objective: The present study was conducted to investigate the effect of Viola odorata extracted syrup on the quality and patterns of sleep in patients with depression or obsessive-compulsive disorder (OCD) as add-on therapy. Design: A pilot double-blind randomized placebo-controlled trial. Settings/Location: Psychiatric Clinic of Imam Hossein Hospital, Tehran, Iran. Subjects: Participants were 16-15 years of age with mild and moderate depression or OCD having insomnia. Interventions: This pilot study was conducted on patients with insomnia divided into two groups with depression (40 patients) or OCD (43 patients). Each group randomly assigned into two arms with the same conditions at baseline. The intervention arm daily received 5 mL V. odorata syrup every 12 h for 4 weeks, and the control arm received 5 mL placebo syrup every 12 h for 4 weeks. None of the participants was deprived of their routine treatment for depression or OCD. Outcome measures: The scores of insomnia symptoms were evaluated using total score of the Pittsburgh Sleep Quality Index (PSQI) and the scores of its components, the depression score using the final Beck depression inventory-II (BDI-II) score, and OCD score using the Yale-Brown Obsessive-Compulsive Scale (YBOCS). Results: The total PSQI score was found to be improved significantly in the intervention arms with depression or OCD (p < 0.001) compared with the corresponding control arms. Significant improvements were also observed in the final mean difference of BDI-II (p = 0.009) and YBOCS (p = 0.001) scores in the intervention arms. Conclusions: V. odorata syrup significantly improved insomnia symptoms and the scores of depression and OCD.

Combining health insurance funds in a fragmented context: what kind of challenges should be considered?

BACKGROUND: Iran's Parliament passed a Law in 2010 to merge the existing health insurance schemes to boost risk pooling. Merging can be challenging as there are differences among health insurance schemes in various aspects. This qualitative prospective policy analysis aims to reveal key challenges and implementation barriers of the policy as introduced in Iran. METHODS: A qualitative study of key informants and documentary review was conducted. Sixty-seven semi-structured face-to-face interviews were conducted, with key informants from relevant stakeholders. Purposive and snowball sampling techniques were used for selecting the interviewees. The related policy documents were also reviewed and analyzed to supplement interviews. Data analysis was conducted through an existing health financing World Bank framework. RESULTS: This study demonstrated that for combining health insurance funds, operational challenges in the following areas should be taken into account: financing mechanisms, population coverage, benefits package, provider engagement, organizational structure, health service delivery and operational processes. It is also important to have adequate cogent reasons to "the justification of the consolidation process" in the given context. When moving towards combining health insurance funds, especially in countries with a purchaser-provider split, it is critical for policy makers to make sure that the health insurance system is aligned with the policies and Stewardship of the broader health care system. CONCLUSIONS: Implementation of major reforms in a health system with fragmented insurance schemes with different target populations, prepayment structures, benefit packages and history of development is inherently difficult, especially when different stakeholders have vetoing powers over the proposed reforms. Solving the differences and operational challenges in the main areas of health insurance system generated in this study may provide a platform for the designing and implementing merging process of social health insurance schemes in Iran and other countries with similar situations.

Augmentation of morphine-conditioned place preference by food restriction is associated with alterations in the oxytocin/oxytocin receptor in rat models.

BACKGROUND: Studies indicate that food restriction (FR) reinforces the effects of morphine. The exact mechanisms by which FR influences the reward circuitry of morphine have not yet been determined. OBJECTIVES: We hypothesized that the effects of FR on the oxytocin (OXT) system and HPA axis can be associated with substance abuse disorders. In this study, the serum levels of OXT and corticosterone, and the expression of OXT/OXT receptor (OXTR), glucocorticoid receptor (GR), and brain-derived neurotrophic factor (BDNF) in the hippocampus, prefrontal cortex, and nucleus accumbens were investigated in an FR model. METHODS: First, the male rats (n = 8 per group) were subjected to FR for 3 weeks. Then, morphine-induced conditioned place preference (CPP) was observed using two doses of morphine (3 and 5 mg/kg). The serum concentrations of corticosterone and OXT were determined by ELISA and the expression of genes was examined by qPCR. RESULTS: FR induced an enhanced preference in the animals for the 5 mg/kg dose of morphine compared to the controls. Serum corticosterone levels increased after FR but OXT levels decreased. Meanwhile, FR actuated downregulation of GR, BDNF, and OXT genes, while inducing the overexpression of OXTR. CONCLUSION: We propose the inclusion of OXT and OXTR alterations in the enhancement of morphine-induced CPP and addiction vulnerability following FR. Moreover, we conclude that altered BDNF levels and HPA axis activity may be the mechanisms involved in the effects of FR on morphine-induced behavior.

Pharmacological and biochemical properties of Zingiber zerumbet (L.) Roscoe ex Sm. and its therapeutic efficacy on osteoarthritis of knee.

Osteoarthritis (OA) as the most frequent form of knee arthritis is one of the most annoying complications amongst old peoples. There are different pharmacological and non-pharmacological remedies which could be applied for treatment of knee OA. It's while, significant side effects mostly in patients who are older are the dangerous limiting factors. Integrative, supplementary, traditional remedies have been applied from long time ago in treatment of such chronic diseases like OA. Various topical and oral remedies have been presented in treatment of OA worldwide. In spite of the fact there are multiple remedies for reduction symptoms of patients who suffer from disorders and related inabilities which could enhance their life quality. Remedies which have been applied for a long time for treatment of OA have newly discovered to induce injury to some patients. On the other side, additional knowledge about alternative and supplementary remedies is a main way for enhancing health of patients who suffer from OA disorders. Zingiber zerumbet (Z. zerumbeton) is a kind of herb of the ginger family and is a natural compound with various biomedical characteristics like anti-proliferative, anti-inflammatory, and antioxidant effect. However, Z. zerumbet could be applied for reduction of OA symptoms because of its circulatory stimulant and anti-inflammatory effects. Anyway, up to now there is not any methodical literature review for evaluating the Z. zerumbet clinical effectiveness productiveness in treatment of OA. The main aim of the current study is to review scientific resources around therapeutic effectiveness of Zingiber zerumbet in treatment of adverse symptoms of OA disorder.

Sulfur Mustard-induced Changes in Blood Urea Nitrogen, Uric Acid and Creatinine Levels of Civilian Victims, and Their Correlation with Spirometric Values.

BACKGROUND: The aim of this study was assessment of the chronic effects of sulfur mustard (SM) among victims. METHODS: In this cohort study, 355 SM-exposed subjects from Sardasht, and 123 controls from Rabat, both from West Azerbaijan Province, Iran were included. The spirometric evaluation and the global initiative for chronic obstructive lung disease (GOLD) classification were applied for all. Serum levels of urea, creatinine (Cr), and uric acid (UA) and glomerular filtration rate (GFR) were assessed. Data analysis was conducted using IBM SPSS. RESULTS: All were male, with a mean age of 43.7±10.7 and 41.6±9.9 years in case and control groups, respectively. The case group had significantly higher values of Cr (P<0.001) and UA (P=0.018) than the control group. This was also the case in the Cr level (P<0.001) in subjects without pulmonary dysfunction, between both groups. There was significant difference in the GFR (P=0.047) between both groups and between subgroups with pulmonary dysfunction in the case and control groups (P=0.045), as well as between SM-exposed subjects with and without pulmonary dysfunction (P=0.009). Serum Cr, UA, sUA/Cr ratio, and BUN as well as the GFR did not have any significant correlation with forced expiratory volume in one second (FEV1), forced vital capacity (FVC), and FEV1/FVC ratio. CONCLUSION: Despite significantly high levels of Cr and UA in the case group, no significant correlation was found between serum Cr, UA, sUA/Cr ratio, BUN, and GFR with spirometric values. Further studies are required to reveal the underlying molecular and clinical significance of these findings.

Association of Sulfur Mustard-Induced Ocular Problems with Serum and Blood Biochemical Parameters Changes.

BACKGROUND & OBJECTIVE: Many biochemical features of sulfur mustard (SM) intoxication have remained unknown. So far, the direct association between biochemical parameter changes and ocular problems in patients exposed to SM is not evaluated. The current study aimed at evaluating the associations between the ocular findings in patients with SM intoxication and the changes of serum and blood biochemical parameters. METHODS: In the current study, 372 patients exposed to SM and 128 matched controls were compared concerning the association between their ocular problems and biochemical parameters. Ocular problems include photophobia, ocular surface discomfort (OSD), etc. Biochemical parameters include uric acid, creatinine (Cr), hematocrit (HCT), total, direct and indirect bilirubin, high-density lipoproteins (HDL), alanine aminotransferase (ALT), calcium (Ca), fasting blood sugar (FBS), mean corpuscular hemoglobin concentration (MCHC), etc. RESULTS: The SM-exposed group with photophobia, OSD, tearing, blurred vision, abnormal tear status, and slit-lamp findings had significantly higher mean serum and blood levels of uric acid, Cr, HCT, and total and indirect bilirubin than the controls. The SM-exposed group with photophobia, tearing, ocular pain, blurred vision, bulbar conjunctival and limbal abnormalities had significantly higher mean serum and blood levels of HDL, ALT, Ca, FBS, MCHC, and HDL, indirect and total bilirubin, compared to the control group. CONCLUSION: The association of photophobia with uric acid, OSD and tearing with Cr, photophobia with HDL, ocular pain with Ca, and blurred vision with FBS may be explained for their known ocular effects in the SM-exposed subjects. SM-induced biochemical changes may intensify the ocular problems induced by the direct effects of SM.

Depressed Immune Responses and Accelerated Splenic Apoptosis due to Experience of Food Deprivation and Inequality but not Unstable Social Status in Balb/c Mice.

OBJECTIVE(S): We aimed to show that the immune system is sensitive to the detrimental effects of inequality and social injustice, and splenic vulnerability to apoptosis may also increase. METHODS: In order of better determination of immune responses to chronic social stress, we implemented food deprivation, food intake inequality, and unstable social status (a change of cage-mate every 3 days) for a period of 14 days in 60 male Balb/c mice. At the end of this stress period, nitric oxide (NO) production by peritoneal adherent cells and the serum concentration of corticosterone were measured. Moreover, the viability of peritoneal adherent cells and spleen lymphocytes was evaluated by MTT assay. The terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay was done to reveal the TUNEL-reactive apoptotic bodies in the spleen. RESULTS: Our results showed that food deprivation and inequality caused significant changes in the apoptosis of splenic cells in comparison with the control group (p < 0.05). Moreover, the vital activities of lymphocytes and peritoneal adherent cells, as well as NO production by the latter, increased significantly (p < 0.05). However, the experience of unstable social status did not cause a further increase in the viability of lymphocytes and peritoneal adherent cells, or NO production in animals that were food-deprived or experienced inequality. Serum concentration of corticosterone in all experimental groups, except for animals that experienced unstable social status only, significantly decreased versus the control group (p < 0.05). CONCLUSIONS: The results suggest that poverty and social inequality, but not unstable social status, affect immune responses and are likely involved in the induction of splenic apoptosis in mice.

Post-infarct sleep disruption and its relation to cardiac remodeling in a rat model of myocardial infarction.

Sleep disruption after myocardial infarction (MI) by affecting ubiquitin-proteasome system (UPS) is thought to contribute to myocardial remodeling and progressive worsening of cardiac function. The aim of current study was to test the hypothesis about the increased risk of developing heart failure due to experience of sleep restriction (SR) after MI. Male Wistar rats (n = 40) were randomly assigned to four experimental groups: (1) Sham, (2) MI, (3) MI and SR (MI + SR) (4) Sham and SR (Sham + SR). MI was induced by permanent ligation of left anterior descending coronary artery. Twenty-four hours after surgery, animals were subjected to chronic SR paradigm. Blood sampling was performed at days 1, 8 and 21 after MI for determination of serum levels of creatine kinase-MB (CK-MB), corticosterone, malondialdehyde (MDA) and nitric oxide (NO). Finally, at 21 days after MI, echocardiographic parameters and expression of MuRF1, MaFBx, A20, eNOS, iNOS and NF-kB in the heart were evaluated. We used H&E staining to detect myocardial hypertrophy. We found out that post infarct SR increased corticosterone levels. Our results highlighted deteriorating effects of post-MI SR on NO production, oxidative stress, and echocardiographic indexes (p < 0.05). Moreover, its detrimental effects on myocardial damage were confirmed by overexpression of MuRF1, MaFBx, iNOS and NF-kB (p < 0.001) in left ventricle and downregulation of A20 and eNOS (p < 0.05). Furthermore, histological examination revealed that experience of SR after MI increased myocardial diameter as compared to Sham subjects (p < 0.05). Our data suggest that SR after MI leads to an enlargement of the heart within 21 days, marked by an increase in oxidative stress and NO production as well as an imbalance in UPS that ultimately results in cardiac dysfunction and heart failure.

Association between Acne and Serum Pro-inflammatory Cytokines (IL-1α, IL-1ß, IL-1Ra, IL-6, IL-8, IL-12 and RANTES) in Mustard Gas-Exposed Patients: Sardasht-Iran Cohort Study.

BACKGROUND: Acne vulgaris is a very common chronic inflammatory disorder, yet its pathogenesis is not clearly understood. As part of the SICS, this study was conducted to evaluate the association between the incidence of acne vulgaris in SM-exposed subjects (20 years after the exposure) and serum levels of proinflammatory cytokines (IL-1α, IL-1ß, IL-1Ra, IL-6, IL-8, IL-12 and RANTES) in an attempt to better understand the pathogenesis of long-term skin disorders of these individuals. METHODS: Serum concentrations of cytokines (IL-1α, IL-1ß, IL-1Ra, IL-6, IL-8, IL-12 and RANTES) were measured using sandwich ELISA technique. RESULTS: The median of serum levels of IL-1ß, IL-8 and RANTES were significantly higher in the exposed patients with acne than those without acne (P = 0.05, 0.03 and 0.001 respectively). There was no significant difference in serum levels of IL-1α, IL-1Ra and IL-6 between the exposed subgroups. CONCLUSION: We found a positive association between serum levels of pro-inflammatory cytokines (IL-1ß, IL-8, IL-12 and RANTES) and acne among SM-exposed population.

Policy Options to Reduce Fragmentation in the Pooling of Health Insurance Funds in Iran.

There are fragmentations in Iran's health insurance system. Multiple health insurance funds exist, without adequate provisions for transfer or redistribution of cross subsidy among them. Multiple risk pools, including several private secondary insurance schemes, have resulted in a tiered health insurance system with inequitable benefit packages for different segments of the population. Also fragmentation might have contributed to inefficiency in the health insurance systems, a low financial protection against healthcare expenditures for the insured persons, high coinsurance rates, a notable rate of insurance coverage duplication, low contribution of well-funded institutes with generous benefit package to the public health insurance schemes, underfunding and severe financial shortages for the public funds, and a lack of transparency and reliable data and statistics for policy-making. We have conducted a policy analysis study, including qualitative interviews of key informants and document analysis. As a result we introduce three policy options: keeping the existing structural fragmentations of social health insurance (SHI)schemes but implementing a comprehensive "policy integration" strategy; consolidation of existing health insurance funds and creating a single national health insurance scheme; and reducing fragmentation by merging minor well-resourced funds together and creating two or three large insurance funds under the umbrella of the existing organizations. These policy options with their advantages and disadvantages are explained in the paper.

Identifying associated factors with social capital using path analysis: A population-based survey in Tehran, Iran (Urban HEART-2).

Background: Social capital has been defined as norms, networks, and social links that facilitate collective actions. Social capital is related to a number of main social and public health variables. Therefore, the present study aimed to determine the factors associated with social capital among the residents of Tehran, Iran. Methods: In this large cross-sectional population-based study, 31531 residents aged 20 years and above were selected through multi-stage sampling method from 22 districts of Tehran in 2011. The social capital questionnaire, 28-item General Health Questionnaire (GHQ-28), and Short-Form Health Survey (SF-12) were used. Hypothetical causal models were designed to identify the pathways through which different variables influenced the components of social capital. Then, path analysis was conducted for identifying the determinants of social capital. Results: The most influential variables in 'individual trust' were job status (ß=0.37, p=0.02), marital status (ß=0.32, p=0.01), Physical Component Summary (PCS) (ß=0.37, p=0.02), and age (ß=0.34, p=0.03). On the other hand, education level (ß=0.34, p=0.01), age (ß=0.33, p=0.02), marital status (ß=0.33, p=0.01), and job status (ß=0.32, p=0.01) were effective in 'cohesion and social support'. Additionally, age (ß=0.18, p=0.02), PCS (ß=0.36, p=0.01), house ownership (ß=0.23, p=0.03), and mental health (ß=0.26, p=0.01) were influential in 'social trust/collective relations'. Conclusion: Social capital can be improved in communities by planning to improve education and occupation status, paying more attention to strengthening family bonds, and provision of local facilities and neighborhood bonds to reduce migration within the city.

Absolute and relative educational inequalities in obesity among adults in Tehran: Findings from the Urban HEART study-2.

BACKGROUND: The prevalence of obesity is increasing in Iran. Previous studies showed mixed results in relation to association between socioeconomic status and obesity in the country. The current study aimed to examine educational inequalities among adults in Tehran in 2011. METHOD: Data on 90,435 persons 18 years and older from Urban Health Equity Assessment and Response Tool (Urban HEART-2) were analyzed. The Slope Index of Inequality (SII) and the Relative Index of Inequality (RII) were used for assessing educational inequalities in obesity. These measures were quantified using generalized linear models for the binomial family adjusted for sex and age. Subgroup analysis was conducted across sex, age groups and the 22 districts of Tehran. RESULTS: Both SII and RII showed substantial educational inequalities in obesity in favour of more educated adults [RII and SII (95% CI were equal to 2.91 (2.71-3.11) and 0.12 (0.12-0.13)), respectively]. These educational inequalities were persistent even after adjusting for employment, marital status and smoking. Subgroup analysis revealed that educational inequalities were more profound among women. While among men educational inequalities were generally increasing with age, an inverse trend was observed among women. Educational inequalities were observed within all 22 districts of Tehran and generally there were no statistically significant differences between districts. CONCLUSION: An inverse association between education and obesity was observed in the current study. To decrease educational inequalities in Tehran, priority should be given to younger women and older men. Further analyses are needed to explain these inequalities.

The prevalence of adulthood overweight and obesity in Tehran: findings from Urban HEART-2 study.

BACKGROUND: To estimate and compare prevalence of overweight and obesity among adult people across the 22 districts of Tehran in 2011. METHODS: This was a cross-sectional study using data on 47,406 women and 47,525 men aged≥ 15 years from a large population-based survey (Urban HEART-2). Age-standardized prevalence (ASP) of overweight (25≤BMI<30) and obesity (BMI≥30) were estimated for the Tehran's districts. Pearson Chi2 tests and logistic regression were used to examine any significant differences in prevalence of these disorders across sociodemographic groups. RESULTS: ASPs of overweight were 36.5% and 32.0 % among men and women, respectively (p<0.001). These figures for obesity were 10.7% and 15.3% among men and women, respectively (p<0.001). Crude prevalence of overweight and obesity rose with age up to the age of 54 years and decreased thereafter. Across education groups, the lowest prevalence of overweight/obesity was seen among most educated people. The results showed that being young, single and student were associated with lower odds of overweight/obesity. CONCLUSION: This study showed a high prevalence of overweight and obesity among adult in Tehran. There were significant associations between sociodemographic characteristics and prevalence of overweight/obesity among adults in Tehran. The results of this study might be used in identifying high risk groups of overweight and obesity in Tehran.

Different patterns of association between education and wealth with non-fatal myocardial infarction in Tehran, Iran: A population-based case-control study.

BACKGROUND: Myocardial Infarction (MI) is a main cause of death and disability worldwide, which involves a number of genetic, physiopathologic and socio-economic determinants. The aim of this study was to assess the patterns of association between education, wealth and some other risk factors with non-fatal MI in Tehran population. METHODS: Data derived from a second round of large cross-sectional study, Urban HEART-2, conducted in Tehran in 2011. Out of 118542 participants, all 249 self-reported incident cases of nonfatal MI were selected as the case group. A number of 996, matched on age and sex, were selected as controls. Principle component analysis (PCA) was used to calculate wealth index and logistic regression model to assess relations between the study variables. RESULTS: Mean (SD) age of participants was 60.25 (12.26) years. A total of 870 (69.9%) of the study subjects were men. Education, wealth status, family violence, hypertension and diabetes were observed as independent predictors of non-fatal MI. Overall, as the level of education increased, the odds of non-fatal MI decreased (p<0.001). We observed an almost J-shaped association between wealth status and non-fatal MI. No significant associations were found between marital status, BMI and current smoking with non-fatal MI (p<0.05). CONCLUSION: We found different patterns of association between education and wealth with nonfatal MI among Tehran adults. Lower risk of non-fatal MI is linked to high educated groups whereas economically moderate group has the lowest risk of non-fatal MI occurrence.

Chronic, long-term social stress can cause decreased microtubule protein network activity and dynamics in cerebral cortex of male Wistar rats.

Social stress is viewed as a factor in the etiology of a variety of psychopathologies such as depression and anxiety. Animal models of social stress are well developed and widely used in studying clinical and physiological effects of stress. Stress is known to significantly affect learning and memory, and this effect strongly depends on the type of stress, its intensity, and duration. It has been demonstrated that chronic and acute stress conditions can change neuronal plasticity, characterized by retraction of apical dendrites, reduction in axonogenesis, and decreased neurogenesis. Various behavioral studies have also confirmed a decrease in learning and memory upon exposure of animals to long-term chronic stress. On the other hand, the close relationship between microtubule (MT) protein network and neuroplasticity controlling system suggests the possibility of MT protein alterations in high stressful conditions. In this work, we have studied the kinetics, activity, and dynamicity changes of MT proteins in the cerebral cortex of male Wistar rats that were subjected to social instability for 35 and 100 days. Our results indicate that MT protein network dynamicity and polymerization ability is decreased under long-term (100 days) social stress conditions.

Protective Effect of Melatonin against Inequality-Induced Da mages on Testicular Tissue and Sper m Para meters.

BACKGROUND: The goals of the study are evaluation the effects of food deprivation and isolation situation as a social stress on fertility; and in the following, investigation of the improving effect of melatonin as an antioxidant component. MATERIALS AND METHODS: In this experimental study, We investigated histopathological and serological effects of melatonin and social stress (food deprivation and isolation) on different features of sperm and testicular tissue among 42 male rats in 7 groups including control, sham, melatonin received (M), food deprivation (FD), Food deprivation and melatonin treatment (FDM), Food deprivation and isolation situation (FDi), and Food deprivation and melatonin treatment and isolation situation (FDMi) groups. Epididymal sperms of all rats were also counted. Histopathological evaluation of the testes was done under a light microscopy to determine the number of spermiogenic cells. Serological evaluation of testosterone, corticosterone, and melatonin was performed, as well. For statistical analysis, oneway ANOVA and Tukey's post hoc test were used, and the value of p≤0.05 was considered statistically significance. RESULTS: The result showed that food deprivation increased the number of abnormal, immotile, and dead sperms, while decreased the number of normal sperms (p<0.05). Isolation could improve sperm motility and viability, while enhanced the number of sper- matogenic cells. Melatonin had a protective effect on sperm count, motility, and viability, while reduced sperm abnormality. CONCLUSION: Our results demonstrated that melatonin treatment and isolation situation improve the parameters related to epididymal sperms and spermatogenic cells after food deprivation.