Exposure to occupational air pollution and vascular endothelial dysfunction in workers of the steel industry in Iran.

Air pollution is recognized as a risk factor for cardiovascular diseases; however, the precise underlying mechanisms remain unclear. This study investigated the impact of occupational air pollution exposure on endothelial function in workers within the steel industry. Specifically, we examined male employees in the coke-making division of the Isfahan Steel Company in Iran, as well as those in administrative roles with no known history of cardiovascular risk. Data on age, body mass index, duration of employment, blood pressure, fasting blood sugar, and lipid profile were collected. To assess endothelial function, flow-mediated dilation (FMD) was measured. The baseline brachial artery diameter was greater (mean difference [95% CI] = 0.068 mm [0.008 to 0.128]), while the FMD was lower (mean difference [95% CI] = -0.908 % [-1.740 to -0.075]) in the coke-making group than in the control group. After controlling for potential confounding variables, it was observed that working in the coke-making sector of the industry was associated with lower FMD (F = 3.954, p = .049). These findings indicated that occupational air pollution exposure among workers in the steel industry is linked to impaired endothelium-dependent vasodilation.

What Predict Self-rated Health: A Cross-sectional Study Among Men and Women with Non-cardiac Chest Pain.

The study aimed to determine different lifestyle and clinical factors that predict self-rated health (SRH) in non-cardiac chest pain (NCCP) patients. In this cross-sectional study, 360 NCCP patients filled out questionnaires about depression, somatization, body sensation, type D personality, and pain intensity. In addition, participants' lifestyle and socio-demographic data were obtained. Multiple regression analyses revealed that among men, pain intensity (OR 1.07; 95% CI 1.03, 1.12), depression (3.10; 1.38, 9.18), somatization (1.18; 1.08, 1.29) and sleep quality (6.23; 1.42, 27.27) were associated with self-rated health. In women NCCP patients, depression (2.44; 1.05, 6.82) pain intensity (1.05; 1.01, 1.10), and physical activity (2.21; 1.07, 5.55) were associated with SRH. The results on the predicting factors of SRH in NCCP patients provide potential insights for more advanced clinical management of NCCP. In addition, they can be applied to improve health policies and promote healthy behaviors among NCCP patients.

Validation of Self-Assessed Form of Diagnostic Criteria for Psychosomatic Research Adapted from Diagnostic Criteria for Psychosomatic Research - Structured Interview.

Background: As the diagnostic criteria for psychosomatic research-structured interview (DCPR-SI) is a rater-assessed questionnaire, it has not been used vastly in community-based studies and clinics. Describing and investigating self-assessed form of DCPR are an attempt to apply it easier and more worthwhile for medical settings. The aim of this study was to describe and present self-assessed form of DCPR self-assessed (DCPR-SA) and test its validity and reliability. Materials and Methods: The DCPR-SI was translated to Persian according to the best practice methodology and the guideline for adaptation of self-report measures. In this cross-sectional study, 540 patients and healthy individuals were recruited and answered DCPR-SA and some related questionnaires. Inter-rater (test-interview) and test-retest reliability were determined. Construct, concurrent, discriminant, and known-group validity were tested. Results: The kappa coefficients were expressed substantial and almost perfect agreement (0.617-0.784, P ≤ 0.05). In addition, phi correlation coefficients were indicated adequate test-retest reliability for each cluster (0.548-0.754, P ≤ 0.05). Three domains (anxiety-related symptoms, functional symptoms, and dysfunctional traits and emotional patterns) were confirmed by factor analysis. The results of the discriminate validity analysis were promising. Conclusion: The findings show that the DCPR-SA is valid and reliable and can be used by medical professionals as a psychosomatic screening tool and can be used properly in Persian-speaking population.

Psychological state in patients undergoing coronary artery bypass grafting surgery or percutaneous coronary intervention and their spouses.

Percutaneous coronary intervention (PCI) and the coronary artery bypass grafting surgery (CABG) are well accepted treatments for coronary artery disease. Many patients and their spouses experience increased level of stress, anxiety and depression before and after going under the procedure. One hundred and ninety-six cardiac patients who were candidate for CABG or PCI procedures and their spouses were asked to complete Hospital Anxiety and Depression Scale and General Health Questionnaire-12 before and 1 month after procedures. Anxiety, depression and stress level in patients and their spouses going under the procedures significantly reduced over time. Scores of anxiety, depression and stress in patients and their spouses were correlated. There was no difference in the level of anxiety, depression and stress between CABG and PCI groups before to after procedures. We suggest providing information about the procedures to both patients and their spouses to deal better with their own psychological state.

Are different perceived stressors associated with metabolic syndrome: a longitudinal cohort study of adults in central Iran.

Purpose: The link between metabolic syndrome (MetS) and various stressors has not been thoroughly investigated. We aimed to examine the relationship between MetS and different perceived stressors. Methods: In this study, we included participants of the Isfahan Cohort study from three counties in central Iran, with data in the 2007 (n = 3178) and 2013 (n = 1693) follow-up stages. We examined the association between distress and perceived stress domains (including job security, job conflicts, personal conflicts, loss and separation, social relations, and health concerns) and MetS. Results: MetS was identified in 35.8% of participants in the 2007 cohort and 46.2% in the 2013 cohort. In the fully adjusted analysis, the odds ratio (OR) (95%CI) for MetS according to psychological status was 1.65 (1.64-1.65) for psychological distress level, 1.09 (1.01-1.20) for psychological distress score, and 1.21 (1.09-1.42) for total perceived stress score. There was also evidence of association for social relations, personal conflicts, job conflicts, job security, health concern, loss and separation, educational concerns, and sexual life subscales. Conclusion: Perceived stressors and some of their subscales were associated with MetS.

How is type D personality associated with the major psychological outcomes in noncardiac chest pain patients?

Noncardiac chest pain (NCCP) may lead many problems on the health-care system. Having type D personality has been shown to adversely affect NCCP patients. This study aimed to determine the psychological comorbidities that type D personality is associated with, in patients with NCCP. The participants of this cross-sectional study were 360 patients diagnosed with NCCP. Patients filled out questionnaires about sociodemographic, behavioral, and clinical factors (severity of pain, somatization, cardiac anxiety, fear of body sensations, depression, and type D personality). Type D personality was more prevalent among female (p < 0.005), and those people having this personality showed lower sleep quality (p = 0.001) and sexual life satisfaction (p < 0.001) and more likely to be smoker (p < 0.001). Type D personality is strongly associated with fear of body sensations (ß = 5.92, SE = 1.95, p = 0.003), pain intensity (ß = 3.53, SE = 0.98, p < 0.001), depression (ß = 2.91, SE = 0.62, p < 0.001), and somatization (ß = 1.75, SE = 0.55, p < 0.001). Type D personality and major psychological comorbidities were strongly associated. Physicians should consider that having type D personality can be linked to NCCP in an effort to help patients receive effective psychological consultations.

Development and validation of a socioeconomic status short-form questionnaire (SES-SQ).

BACKGROUND: Evaluation of socioeconomic status (SES) is an important aspect in community-based health studies and it is a major predictor of health and nutritional status as well as mortality and morbidity from many diseases. This study aimed to construct and validate socioeconomic status short-from questionnaire (SES-SQ) in Iranian population. METHODS: This cross-sectional methodological study was conducted among 1437 Iranian general population. Face and content validity of the developed questionnaire was evaluated qualitatively. Internal consistency, construct validity using exploratory factor analysis (EFA) and latent class analysis (LCA), and convergent and known-group validity were also evaluated. RESULTS: The SES-SQ consisted of 6 items. The overall Cronbach's alpha was 0.64, showing acceptable internal consistency. EFA resulted in two factors explaining 47.78% of total variance. Three SES classes (low/middle/high) were extracted by LCA. The score of SES-SQ ranged from 0 to 17; two cutoff scores of 4.5 and 8.5 were determined by receiver operating characteristic (ROC) analysis for differentiating low from middle and middle from high SES classes, respectively. CONCLUSION: An efficient, reliable, and valid short-form questionnaire was developed for evaluating SES in Iranian general population. The relevancy of questionnaire items is not lost over time.

Determinants of depression in non-cardiac chest pain patients: a cross sectional study.

BACKGROUND: Non-cardiac chest pain (NCCP) is a common patient complaint imposing great costs on the healthcare system. It is associated with psychological factors such as depression. The aim of the present study is determining depression predictors in NCCP patients. METHODS: The participants of this cross-sectional study were 361 NCCP patients. Patients filled out questionnaires concerning their sociodemographic, lifestyle, and clinical factors (severity of pain, type D personality, somatization, cardiac anxiety, fear of body sensations, and depression). RESULTS: Based on multiple ordinal logistic regression, lack of physical activity (odds ratio [OR], 1.78; 95% confidence interval [CI], 1.09-2.87), sleep quality (OR, 2.98; 95% CI, 1.15-7.69), being a smoker (OR, 1.33; 95% CI, 2.41-4.03), present pain intensity (OR, 1.08; 95% CI, 1.05-1.11), type D personality (OR, 2.43; 95% CI, 1.47- 4.03), and somatization (OR, 1.22; 95% CI, 1.15-1.3) were significant predictors of depression in NCCP patients. Additionally, multiple linear regression showed that being unmarried (ß = 1.51, P = 0.008), lack of physical activity (ß = 1.22, P = 0.015), sleep quality (ß = 2.26, P = 0.022), present pain intensity (ß = 0.07, P = 0.045), type D personality (ß = 1.87, P < 0.001), somatization (ß = 0.45, P < 0.001), and fear of bodily sensation (ß = 0.04, P = 0.032) increased significantly depression scores in NCCP patients. CONCLUSIONS: Physicians should consider the predictors of depression in NCCP patients which can lead to receiving effective psychological consultations and reducing the costs and ineffectual referrals to medical centers.

Patient competence in relation with medical and psychosocial characteristics in cardiology context: A cross-sectional study.

BACKGROUND: Growth of cardiovascular disease (CVD), variation in provision of medical services, rising costs, and increasing information availability through the media are making patients more actively involved in decision-making process of their treatment. The aim of this study was to better understand the components of patient competence in the context of coronary artery disease (CAD) and to further evaluate their relations with medical, demographic, and psychosocial characteristics. METHODS: In this cross-sectional study, 148 patients with at least one year diagnosis of acute coronary syndrome (ACS) were enrolled in the study from April to June 2014. Data on demographic characteristics, depression, anxiety, quality of life (QOL), social support, and drug adherence were collected from participants. Pearson correlation, one way analysis of variance (ANOVA), and multiple linear regression tests were performed for analyzing data. RESULTS: The mean age of patients was 53.63 ± 5.15. Of the participants, 58 (39.5%) and 61 cases (41.5%) were found to be depressed and anxious, respectively. Higher levels of self-regulation correlated with higher education years and social support, and also with lower depression and anxiety (P < 0.050). Stress management and confronting the threat were linked to education years, depression, anxiety, QOL, and social support (P < 0.050). CONCLUSION: The patients with CAD, in order to be involved in the proper treatment process and manage their emotions during this process, need to have the required competencies. Patient competence as a whole and its components have been related to medical, demographic, and psychosocial characteristics.

DABTZ as a new reagent for solid phase extraction and spectrophotometric determination of trace amount of Hg(II) in water sample.

A novel sensitive and simple method for rapid and selective extraction, preconcentration and determination of mercury as its 2,2' diamino-4,4' bithiazole (DABTZ) complex by using octadecylsilica cartridges and spectrophotometry is presented. Extraction efficiency and the influence of flow rates of sample solution and eluent, pH, amount of DABTZ, type and least amount of eluent for elution of mercury complex from cartridges, break through volume and limit of detection were evaluated. Also the effects of various cationic and anionic interferences on percent recovery of mercury were studied. Average extraction efficiency > 90% was obtained by elution of the cartridge with minimal amount of solvent in the presence of interferences. A preconcentration factor of 152 and a detection limit of 10.92 ng mL(-1) were obtained. The method was applied to the recovery and determination of mercury in different water samples.

Development and validation of cardiac patient competence questionnaire, Iranian version.

BACKGROUND: The aim was to translate and develop a patient competence (PC) questionnaire in the context of cardiology and test its validity and reliability. METHODS: In total, 148 cardiac patients who have inclusion criteria of the study were completed cardiac PC (CPC) questionnaire. Hospital Anxiety and Depression Scale and self-administered instrument European quality of life 5-dimensions were used to further validate the CPC questionnaire. The CPC was translated according to the recommended methodology for translating questionnaires, and psychometric properties including internal consistency, factor analysis, discriminant validity, construct validity, and concurrent criterion validity were tested. RESULTS: Five domains in problem-focused task including search for information, self-regulation, being assertive, independent decision-making, and looking for social services, and three domains in emotion-focused task including stress management, confronting the threat, and avoidance were obtained by factor analysis. The standardized Cronbach's α of all domains were statistically significant (P < 0.001) and internal consistency for all domains was acceptable. Significant intercorrelations of CPC domains also indicated good criterion validity. As there were no cross-loadings, the domains have demonstrated good construct validity and discriminant validity. CONCLUSION: The results of this study show that the Persian version of the CPC is a reliable and valid questionnaire. Although further improvement of this measure is clearly required, it suggests being a potential basis for investigating the determinants and health effects of CPC.

Health volunteers' knowledge of cardiovascular disease prevention and healthy lifestyle following a community trial: Isfahan healthy heart program.

BACKGROUND: Health volunteers can have a great effect by training the population about prevention of cardiovascular disease (CVD) and lifestyle modification. This study evaluated the health volunteers' knowledge following the Isfahan Healthy Heart Program (IHHP) that was performed between 2000 and 2006. MATERIALS AND METHODS: In this study, 491 females were selected among health volunteers in the Isfahan and Najafabad districts as intervention areas and Arak as a reference area through 2000-2001 until 2006. They participated in training courses on CVD, its complications, methods of prevention of risk factors control as well healthy lifestyle promotion. The health volunteers' level of knowledge was assessed before and after training. RESULTS: Before intervention, there was no significant difference between the scores of health volunteers in the intervention and the control regions in terms of knowledge about recognizing the symptoms, complications and prevention of CVD and relevant risk factors and healthy lifestyle. However, their knowledge scores increased significantly in the fields of CVD (ß = 0.13, P = 0.04), hypertension (ß = 0.18, P = 0.009), healthy nutrition (ß = 0.19, P = 0.007), appropriate physical activity (ß = 0.17, P = 0.01) and dealing with stress (ß = 0.16, P = 0.02) after trainings. CONCLUSION: The 6 year interventional program of IHHP showed that training health volunteers on prevention of CVD, their risk factors and modification of lifestyle continued to be effective even in a long time.

Are obese adolescents more depressed?

INTRODUCTION: Obesity is a growing problem in all countries which leads to various physical, psychological, and social problems. The present study aimed to assess depression in children and adolescents aged 10-18-year old compared with the control group. MATERIALS AND METHODS: In a case-control study, from among the 10- to 18-year-old students of the five education districts of Isfahan, 100 people (50 girls and 50 boys) were selected as obese children with the Body Mass Index (BMI) of greater than 95(th) percentile for their age and gender and 100 others (50 girls and 50 boys) as the control group with the BMI of 5(th) to 85(th) percentile. The case and control groups were matched for age, gender, and socio-economic status. After calculating BMI based on weight (kg)/height(2) (meter), subjects were interviewed based on DSM IV criteria to diagnose clinical depression. The severity of children's depression was measured using standardized questionnaire. RESULTS: The mean age of the case group was 12.2 ± 1.86-years old and that of the control group 13.06 ± 2.25. They were, respectively, diagnosed with depression of 7% and 6%. The mean depression score of the case group was 11.7 ± 5.3 and that of the control group was 10.6 ± 6.03 with no statistical significance. DISCUSSION: Given our findings, the Jolly fat hypothesis applies to the case group. It seems that health policy-makers need to make intervention plans to change behavior; attitude, skill, and knowledge (BASK) of the public toward obesity and its long-term side-effects.

Lipid profile in antipsychotic drug users: A comparative study.

BACKGROUND: Schizophrenic patients who receive antipsychotic drugs may be highly prone to metabolic disorders such as weight gain, dyslipidemia, and insulin resistance. The objective of the present study was to compare the effect of atypical and conventional antipsychotics on lipid profile. METHODS: 128 schizophrenic patients were enrolled into the study. Patients were divided into two groups. One group had received one type of atypical antipsychotic drug, and, the other, one type of conventional antipsychotic drug. They were considered as atypical and conventional groups. Moreover, both groups had not used any other antipsychotic drugs during the past year. Demographic data and food frequency questionnaire were completed by the participants. Serum triglyceride, total cholesterol (TC), high-density lipoprotein and low-density lipoprotein (LDL) cholesterols, and apolipoprotein A and B (Apo B) were tested by blood sample drawing after 12 hours of fasting through the antecubital vein. Student's t-test was used to compare atypical and conventional groups. RESULTS: There was no significant difference in age, gender, duration of illness, period of drug consumption, and age at onset of illness in the two groups. Patients in the atypical group used clozapine and risperidone (46.9%) more than olanzapine. In the conventional group 81.3% of patients used phenothiazines. Comparison between lipid profile in the conventional and atypical groups showed a significantly higher mean in TC (P = 0.01), LDL (P = 0.03), and Apo B (P = 0.01) in conventional group than the atypical group. CONCLUSION: In schizophrenic patients, the level of lipid profile had been increased in both atypical and conventional antipsychotic users, especially conventional users, so the effect of antipsychotic drugs should be investigated periodically.

Using a new ligand for solid phase extraction of mercury.

The octadecyl silica cartridge as a sorbent and 4-bp db (1,4-bis(4-pyridyl)-2,3-diaza-1,3-butadiene) as a ligand is a simple, rapid and reliable method for extracting and preconcentrating of Hg(II) in real samples prior to cold vapor atomic absorption spectrometry. Sample solutions were passed through a column at pH 4.5 then retained mercury ions on the column were eluted with minimal amount of 0.01 M nitric acid with 3 mL min(-1) flow rate. The effect of pH, type of buffer, flow rate of sample and eluent, type and volume of the eluent were investigated and optimized. At optimum effective parameters, concentration factor and detection limit were achieved 128 and 1.87 ng L(-1), respectively.