سال:1393 | دوره: | شماره: |تعداد مقالات:13

The Global Burden of Disease Study 2010 (GBD 2010) is to date the largest epidemiologic study on major illnesses and injuries. The study includes several millions of observations on risk factors, causes of death, mortality, injury and disease incidence and prevalence during a 5 year period with more than 400 contributing scientists across the globe. The study has developed novel metrics that quantify not only the disease but also “health”, and so makes it possible to compare health status in different countries in different regions of the world at different times. GBD metrics measure both disease occurrences and death events.

BACKGROUND: we aimed to recap and highlight the major results of the Global Burden of Diseases, Injuries, and Risk Factors Study 2010 by mortality and morbidity to clarify the current health priorities and challenges in Iran.METHODS: We estimated Iran’s mortality and burden of 289 diseases with 67 risk factors and 1160 sequelae, which were used to clinically present each disease and its disability or cause of death. We produced several measures to report health loss and status: all-cause mortality, cause-specific mortality, years of life lost due to death (YLL), healthy years of life lost due to disability (YLD), disability-adjusted life years (DALYs), life expectancy, and healthy life expectancy, for three time periods: 1990, 2005, and 2010.RESULTS: We found out that life expectancy at birth was 71.6 years in men and 77.8 years in women. Almost 350 thousand deaths occurred in both sexes and all age groups in 2010. In both males and females and all age groups, ischemic heart disease was the main cause of death, claiming about 90 thousand lives. The main contributors to DALYs were: ischemic heart disease (9.1%), low back pain (9.0%), road injuries (7.3%), and unipolar depressive disorders (6.3%). The main causes of death under 5 years of age included: congenital anomalies (22.4%), preterm birth complications (18.3%), and other neonatal disorders (13.5%). The main causes of death among 15-49 year olds in both sexes included: injuries (23.6%) and ischemic heart disease (12.7%) The highest rates of YLDs were observed among 70+ year olds for both sexes (27,365 per 100,000), mainly due to low back pain, osteoarthritis, diabetes, falls, and major depressive disorder. The main risk factors to which deaths were attributable among children under 5 years included: suboptimal breast feeding, ambient PM pollution, tobacco smoking, and underweight. The most important risk factors among 15 to 49 year olds were: dietary risks, high blood pressure, high body mass index, physical inactivity, smoking, and ambient PM pollution. The pattern was similar among 50+ year olds.CONCLUSION: Although non-communicable diseases had the greatest burden in 2010, the challenge of communicable and maternal diseases for health system is not over yet. Diet and physiological risk factors appear to be the most important targets for public health policy in Iran. Moreover, Iranians would greatly benefit from effective strategies to prevent injury and musculoskeletal disorders and expand mental care. Persistent improvement is possible by strengthening the health information system to monitor the population health and evaluate current programs.

BACKGROUND: Drawing on the results of the country-level Global Burden of Diseases, Injuries, and Risk Factors 2010 Study, we attempted to investigate the drivers of change in the healthcare system in terms of mortality and morbidity due to diseases, injuries, and risk factors for the two decades from 1990 to 2010.METHODS: We decomposed trends in mortality, cause of death, years of life lost due to disability, disability-adjusted life years (DALYs), life expectancy, health-adjusted life expectancy, and risk factors into the contribution of total increase in population size, aging of the population, and changes in age-specific and sex-specific rates.RESULTS: We observed a decrease in age-specific mortality rate for both sexes, with a higher rate for women. The ranking of causes of death and their corresponding number of years of life lost remained unchanged between 1990 and 2010. However, the percentages of change indicate patterns of reduction for most causes, such as ischemic and hemorrhagic stroke, hypertensive heart disease, stomach cancer, lower respiratory infections, and congenital anomalies. The number of years lost due to disability caused by diabetes and drug use disorders has significantly increased in the last two decades. Major causes of DALYs, such as injuries, interpersonal violence, and suicide, showed increasing trends, while rates of communicable diseases, neonatal disorders, and nutritional deficiencies have declined significantly. Life expectancy and health-adjusted life expectancy increased for both sexes by approximately 7 years, with the highest rate of increase pertaining to females over the age 30.CONCLUSIONS: Time trend information presented in this paper can be used to evaluate problems and policies specific to medical conditions or risk factors. Despite recent improvements, implementing policies to reduce the number of deaths and years of life lost due to road traffic injury remains the highest priority for Iranian policymakers. Immediate action by Iranian researchers is required to match Iran’s decreasing mortality rate due to liver and stomach cancers to a rate comparable to the global level. Prevention and treatment plans for mental disorders, such as major depressive disorder, anxiety disorder, and particularly drug use disorders, should be considered in reforms of the health, education, and judiciary systems in Iran.

BACKGROUND: Population health and disease profiles are diverse across Iran’s neighboring countries. Borrowing the results of the country-level Global Burden of Diseases, Injuries, and Risk Factors 2010 Study (GBD 2010), we aim to compare Iran with 19 countries in terms of an important set of population health and disease metrics. These countries include those neighboring Iran and a few other countries from the Middle East and North Africa (MENA) region.METHODS: We show the pattern of health transition across the comparator countries from 1990 through 2010. We use classic GBD metrics measured for the year 2010 to indicate the rank of Iran among these nations. The metrics include disability-adjusted life years (DALYs), years of life lost as a result of premature death (YLLs), years of life lost due to disability (YLDs), health-adjusted life expectancy (HALE), and age-standardized death rate (ASD).RESULTS: Considerable and uniform transition from communicable, maternal, neonatal, and nutritional (CMMN) conditions to non-communicable diseases (NCDs) was seen between 1990 and 2010. On average, ischemic heart disease, lower respiratory infections, and road injuries were the three principal causes of YLLs, while low back pain and major depressive disorders were the top causes of YLDs in these countries. Iran ranked 13th in HALE and 12th in ASD. The function of Iran’s health care, measured by DALYs, was somewhat in the middle of the HALE spectrum for the comparator countries. This intermediate position becomes rather highlighted when Afghanistan, as outlier, is taken out of the comparison.CONCLUSION: Effective policies to reduce NCDs need to be formulated and implemented through an integrated health care system. Our comparison shows that Iran can learn from the experience of a number of these countries to devise and execute the required strategies.

BACKGROUND: Psoriasis is a common chronic and recurrent inflammatory skin disorder characterized by hyperproliferation of keratinocytes and infiltration of T cells, monocytes/macrophages and neutrophils into dermal and epidermal layers of the skin. The prevalence of cardiovascular disorders in these patients is remarkably higher compared to normal individuals, which seems to be associated with the hyperlipidemia. This study was designed and conducted to investigate the serum lipid profile in psoriatic patients and its association with the severity of disease.MATHERIALS AND METHODS: This case-control study was performed on 50 plaque-type psoriasis patients and 50 healthy individuals as control, matched for age and sex. Blood samples were collected after 14 h fasting. Serum triglyceride, cholesterol and lipoproteins were assayed using the standard kit (made by Pars Azmon Co. Iran).RESULTS: Certain parameters, including serum triglyceride, cholesterol, low density lipoprotein (LDL), and very low density lipoprotein (VLDL), were significantly higher in the case group compared to the controls (P < 0.001), while high density lipoprotein (HDL) was significantly lower in the former (P < 0.001). In addition, there was a significant relationship between severity of psoriasis and serum lipid profile.CONCLUSION: The results have revealed the higher plasma level of lipids in psoriatic patients. This may elevate the risk of atherosclerosis, particularly cardiovascular disorders. Therefore, from the epidemiological point of view, screening psoriatic patients, particularly those with severe psoriasis, is recommended.

BACKGROUND AND OBJECTIVES: Thyroid dysfunction is a common health problem affecting millions of patients worldwide. Autoimmune thyroid disorders are among the most common autoimmune disorders. In this population-based study, we assessed the prevalence of abnormal thyroid function, antithyroid antibodies and the probable relationship between them in Shiraz, southern Iran.METHODS: Serum thyrotropin (TSH) was determined in 981 subjects (66.8% female and 33.2% male; mean age: 39.1±14.3 years), who were selected with stratified random sampling. Because of the preponderance of females over males, we performed the statistical analyses using sex-weighted data (50% for each sex). Also, antithyroid peroxidase antibodies (TPOAb), and antithyroglobulin antibodies (TgAb) were measured in two random subgroups of 376 and 537 patients respectively). Thyromegaly detected on physical examination.RESULTS: In this cross-sectional study, 8.1% of participants had elevated serum TSH level and 3.4% had low serum TSH level. A statistically significant relationship was found between gender and thyromegaly and TSH values. Positive TPOAb and positive TgAb were detected in 17% and 5.1% of participants respectively. In addition, a significant relationship was observed between elevated TSH levels and positive results for both antibodies. Detectable levels of thyroid antibodies correlated with female sex, while no correlation was observed between detectable levels of thyroid antibodies and thyromegaly.CONCLUSION: Thyroid disorders, especially elevated TSH level, are common. It seems that autoimmune mechanisms are strongly involved in the etiology of hypothyroidism in this area.

BACKGROUND: Lithium chloride (LiCl), a drug for bipolar disorder, has antiproliferative and apoptotic effects on certain breast cancer cell lines. This study was conducted to determine the effect of LiCl on radiosensitivity in a human breast cancer cell line in monolayer culture and the more realistic tumor model, multicellular tumor spheroid.METHODS: Monolayer and spheroid cells were treated with LiCl (20 mM) for 24 hours. The clonogenic assay was used to indicate changes in survival after x-ray radiation. The percentage of apoptotic cells was determined by acridine orange/ethidium bromide double staining. The amounts of DNA damage and repair after exposure to ionizing radiation were assessed by comet assay. Mre11 mRNA level was determined by RT-PCR. GSK-3b and b-catenin protein levels were measured by Western blotting.RESULTS: Treatment with LiCl decreased surviving fraction at 2, 3 and 6 Gy doses of x-ray (P<0.01). The sensitizer enhancement ratio was higher in spheroids than monolayer culture. LiCl also decreased DNA repair (P<0.05) and Mre11 mRNA level (P<0.01) in T47D cells. These decreases were more prominent in spheroids than monolayer culture.CONCLUSION: Treatment of T47D cells with LiCl sensitized this breast cancer cell line to ionizing radiation in monolayer and especially in the tumor-like spheroid culture. This radiosensitization was attributed, in part, to decline in DNA repair. Decrease in Mre11 mRNA level upon LiCl treatment was suggested to be an important cause for the decreased DNA repair in T47D monolayer and spheroid cells.

BACKGROUND: Asthma is a major public health problem in the world, and recent findings suggest that stress influences asthma and asthma morbidity. The 10-item Perceived Stress Scale (PSS-10) is one of the most frequently used instruments to measure psychological stress. This study was conducted to evaluate the psychometric properties of the Persian versions of the PSS-10 in adults with asthma.METHODS: In this descriptive cross-sectional study as a methodological research, 106 asthmatic patients referring to several clinics in Sanandaj (western Iran) were selected through convenience sampling. The PSS-10 and the 21-item Depression anxiety and stress scale (DASS-21) were administrated to all patients. Cronbach’s alpha was used to evaluate reliability of PSS-10, and confirmatory factor analysis (CFA) and convergent validity were used to evaluate its validity.RESULTS: The results of confirmatory factor analysis indicated that a two-factor structure of PSS-10 provided a good fit to data. The Cronbach’s alpha coefficients for negative factor, positive factor and total score (PSS-10) were 0.86, 0.83, and 0.90, respectively. The PSS-10 was positively correlated with the DASS-21 and its subscales, indicating an acceptable convergent validity. Female asthmatic patients scored higher on PSS-10 in comparison with male asthmatic patients.CONCLUSION: The Persian version of PSS-10 is a valid and reliable instrument to measure perceived stress in adults with asthma.

BACKGROUND: Silibinin is a traditionally well-known drug for its hepatoprotective efficacy against various types of liver afflictions. In addition, it has recently been considered broadly as a potential chemopreventive agent against many types of cancers. The current study was designed to evaluate the restrictive effects of pharmacological doses of silibinin on SKBR3, an ErbB2-overexpressed and ER-negative human breast carcinoma cell line.METHODS: Effect of silibinin on metabolic activity and proliferation of human breast carcinoma (SKBR3) cell line were evaluated by MTT and BrdU assays respectively. Furthermore, the proapoptotic effect of silibinin was investigated using flow cytometry. The NF-ĸB phosphorylation assay was also used to assess the effect of silibinin on NF-ĸB activation. The alkalizing effect of silibinin on SKBR3 cell line was evaluated by measuring pH of media of the silibinin-treated cells compared to control.RESULTS: Our results indicate that silibinin inhibited metabolic activity and cell proliferation of SKBR3 cells in a dose-dependent manner. Moreover, silibinin significantly induced apoptosis in SKBR3 cells. On the other hand, silibinin significantly inhibited activation of NF-ĸB which is known to be highly active in this cell line. Alkalizing effect of silibinin was also observed.CONCLUSION: The results obtained here indicate that silibinin may be an efficacious therapeutic agent against ER-negative breast carcinomas with high inhibitory effect on NF-ĸB.

BACKGROUND: The quality of the educational environment is a key determinant in postgraduate training programs. In order to evaluate and understand this environment a valid and reliable instrument is required. The PHEEM (Postgraduate Hospital Educational Environment Measure) questionnaire is one of the most widely used tools for evaluating the perception of hospital-based residents. The aim of this study was to examine the psychometric quality of the PHEEM in the context of emergency medicine program.METHODS: This study evaluated the reliability, construct validity and applicability of the Persian version of the PHEEM questionnaire using a sample of emergency medicine residents from 3 emergency medicine residency programs in Iran. Eighty-nine residents were asked to complete the questionnaire and indicate their agreement with each of the 37 statements using a 5-point Likert scale (strongly disagree: 0 to strongly agree: 4). Cronbach’s alpha coefficient was calculated to determine internal consistency. Confirmatory and explanatory factor analyses were performed to assess the construct validity of the original 3 subscales of the questionnaire.RESULTS: The mean score for the total questionnaire was 2.24 (SD: 0.06). The Cronbach's alpha value was found to be 0.86. Factor analysis did not confirm the original three subscales of the PHEEM questionnaire.CONCLUSION: The Persian version of PHEEM proved a reliable and practical tool for assessing clinical educational environment in emergency medicine departments.

Multiple endocrine neoplasia (MEN) type 2A, a dominant inherited syndrome caused by germline activating mutations in the RET protooncogene, is characterized by association of medullary thyroid carcinoma, pheochromocytoma and primary hyperparathyroidism. There is limited data on this disease in the Middle East region. In this paper, we present clinical and genetic studies of an Iranian patient and her family members. The patient was a 49-year old Iranian woman who presented with hypertension due to bilateral pheochromocytoma. She had history of a medullary carcinoma of thyroid which had been operated 28 years ago. Analysis of the RET gene in the family revealed a C634R mutation in codon 11 and 3 polymorphisms, G691S, S836S and S904S in codons 11, 14 and 15, respectively, that might have been important in modifying the clinical picture. Due to paucity of information on MEN type 2 in the area, this study can be helpful in portraying the clinical and cytogenetic characteristics of the disease in the region.

The purpose of this article is to present the CT features in five cases of pathologically verified Inferior vena cava (IVC) leiomyosarcoma.In this retrospective analysis, we reviewed CT features in 5 cases of clinicopathologically confirmed IVC leiomyosarcoma with respect to its location (infra renal, trans renal, supra renal), its extent (with or without involvement of renal vein, hepatic IVC with or without involvement of hepatic vein, right atrial & extra caval extension) and pattern of enhancement. CT guided biopsy was performed in four patients while the last patient underwent successful resection of the tumor.Three male and two female patients (aged 45 to 72 years) were included in the study. Heterogeneously enhancing retroperitoneal mass involving IVC is the most common imaging feature. The intra and extra luminal extension was demonstrated excellently in all patients.IVC leiomyosarcoma is a rare neoplasm often presenting very late with non-specific symptoms. Cross sectional imaging establishes the exact location and extension and plays a vital role in determining the resectibility and planning the management.

Chronic Myelogenic Leukemia (CML) is a rare malignant disorder after solid organ transplantation, especially in renal transplant recipients. Imatinib Mesylate is currently approved as first line treatment of CML. Most reports on CML are from kidney recipients who received azathioprine in combination with cyclosporine and prednisolone as immunosuppressive therapy. We report a case with CML who was treated with Mycophenolate Mofetil.