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Abedini R, Khaniki GJ, Naderi M, Aghaee EM, Sadighara P. Investigation of melamine and cyanuric acid concentration in several brands of liquid milk and its non-carcinogenic risk assessment in adults and infants. J Food Sci Technol 2023; 60:3054-3066. [PMID: 37786605 PMCID: PMC10542036 DOI: 10.1007/s13197-023-05814-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 08/06/2023] [Accepted: 08/10/2023] [Indexed: 10/04/2023]
Abstract
In this study, the melamine and cyanuric acid concentration of widely used milk brands and the probability of non-carcinogenic risk of the brands for adults and infants were investigated. These values were 1.37 mg/L, 1.10 mg/L, and 1.09 mg/L, which corresponded to creamy sterilized sample, high-fat (creamy) pasteurized sample, and low-fat (less-creamy) pasteurized sample, respectively. Similarly, the highest amount of cyanuric acid occurred in brand A with the values of 0.79 mg/L, 0.65 mg/L, and 0.64 mg/L, which was reported in the same samples mentioned for melamine. The HQ (Hazard Quotient) of melamine in the brands of A, B, C and D for adults was 0.0025, 0.0011, 0.0006 and 0.0008 respectively. These values for infants were reported as 2.2280, 0.9444, 0.5714 and 0.6714 respectively. The risk probability of melamine for adults was less than 1. However, the HQ in brand A for infants was greater than 1 (2.380), which indicate the high probability of non-carcinogenic risk. Furthermore, the HI (Hazard Index) values of the brands of A, B, C and D for infants were 2.7913, 1.1737, 0.7067 and 0.838, respectively. The simultaneous melamine and cyanuric acid in the brands A and B in for infants increase the non-carcinogenic risk probability by approximately 2.8 and 1.2 times, respectively. The results revealed that the melamine and cyanuric acid concentrations in creamy milk samples (0.5%) were higher than in less-creamy milk samples (2.5%). Moreover, the amount of the compounds in sterilized milk samples was higher than pasteurized. In this study, a conversion factor (0.7) was proposed in order to find out the concentration of cyanuric acid in milk sample with the amount of melamine is known but the cyanuric acid concentration is unknown.
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Affiliation(s)
- Roghayeh Abedini
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Jahed Khaniki
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Maziar Naderi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ebrahim Molaee Aghaee
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Parisa Sadighara
- Division of Food Safety and Hygiene, Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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Abedini R, Jahed Khaniki G, Molaee Aghaee E, Sadighara P, Nazmara S, Akbari-Adergani B, Naderi M. Determination of melamine contamination in chocolates containing powdered milk by high-performance liquid chromatography (HPLC). J Environ Health Sci Eng 2021; 19:165-171. [PMID: 34150227 PMCID: PMC8172743 DOI: 10.1007/s40201-020-00590-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Accepted: 12/07/2020] [Indexed: 05/15/2023]
Abstract
Melamine is widely being reported as a food adulterant. Although its toxicity is currently recognized, melamine adulterations of dairy products are ongoing to apparently increase the amount of protein. The study was conducted to investigate the determination of melamine amounts in chocolates containing powdered milk. In this study, 60 samples of chocolates containing powdered milk, both imported and domestic brands, were collected. The samples were prepared by solid phase extraction (SPE) and analyzed using high-performance liquid chromatography (HPLC). According to the results, melamine was found in about 94% of imported samples and about 77% of Iranian samples. Melamine concentration in imported samples ranged from 0.032 to 2.692 mg/kg, while in Iranian ones it ranged from 0.013 to 2.600 mg/kg. The mean melamine concentrations of foreign and Iranian samples were 0.685 ± 0.68 and 0.456 ± 0.73 mg/kg, respectively. Moreover, the limit of detection (LOD) and limit of quantification (LOQ) values of melamine were 0.017 and 0.052 μg/ml, respectively. The recovery rate (R%) at fortified levels of 1-2 mg/kg was found to be 89.20-95.69% with an RSD (Relative Standard Deviation) of 1.8-2.7%. Based on the study results, melamine was present in 85% of all samples and the melamine level in one Iranian brand and one imported brand was higher than the Codex Organization standard. However, the consumption of chocolates containing these low levels of melamine does not constitute a health risk for consumers.
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Affiliation(s)
- Roghayeh Abedini
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Gholamreza Jahed Khaniki
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ebrahim Molaee Aghaee
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Parisa Sadighara
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahrokh Nazmara
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Behrouz Akbari-Adergani
- Food & Drug Laboratory Research Center, Food & Drug Organization, Ministry of Health and Medical Education, Tehran, Iran
| | - Maziar Naderi
- Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
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Mortazavi H, Kamyab-Hesari K, Karimi S, Rafati S, Mohebali M, Khamesipour A, Ghiasi M, Abedini R, Mortazavi S, Daneshbod Y, Shirian S. Evaluation of Th17 associated antigen in Old World Cutaneous Leishmaniasis: A comparative study in acute versus chronic human cutaneous Leishmaniasis using immunohistochemistry. Trop Biomed 2019; 36:1061-1070. [PMID: 33597475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
There are little information about Th17 cells and cutaneous Leishmaniasis (CL), due to an important effect of Th17 cells on immune response, it is worth to explore the role of Th17 on CL. The purpose of this study was to assess Th17 population in patients with acute vs. chronic CL lesions in comparison with skin samples collected from healthy volunteers in an endemic region of Old World CL. A total of 49 patients with clinical manifestations of chronic (n=16) and acute (n=33) CL lesions were recruited. The clinical diagnosis of CL was confirmed by direct smear or PCR. Biopsy specimens from prelesional skin of non-infectious lesions of 30 healthy individuals were used as control. Tissue sections of 3µm thickness were prepared and used for immunohistochemistry (IHC) analysis with primary antibody specific for Th17 associated antigen (CD161). For IHC, Envision+ (DakoCytomation) system was used and developed by using diaminobenzidine (DakoCytomation). The mean age of 33 patients with acute CL and the mean age of 16 patients with chronic CL were accordingly 45.24±16.43 and 33.56±15.87. In acute and chronic CL the mean (±standard deviation) and median (±interquartile range) were accordingly 2.92±2.21, 2.56±2.9 and 2.1±1.99, 1.54±2.81. In healthy controls the mean (±standard deviation) and median (±interquartile range) were 0.72±0.41 and 0.61±0.58 respectively. With pairwise comparison of acute, chronic and control groups, there were significant difference between acute and control (P value < 0.001), chronic and control (P value = 0.043). The results showed that there was an increasing cellular response of Th17 in both acute and chronic CL patients. Th17 was significantly higher in patients with acute and chronic CL lesions in comparison with healthy control group. However, there was no significant difference between acute and chronic infection concerning to Th17 cells.
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Affiliation(s)
- H Mortazavi
- Department of Dermatology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - K Kamyab-Hesari
- Department of Pathology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - S Karimi
- Department of Dermatology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - S Rafati
- Department of Immunotherapy and Leishmania Vaccine Research, Pasteur Institute of Iran, Tehran, Iran
| | - M Mohebali
- Department of Medical Parasitology and Mycology, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - A Khamesipour
- Center for Research and Training in Skin Diseases and Leprosy, Tehran University of Medical Sciences, Tehran, Iran
| | - M Ghiasi
- Department of Dermatology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - R Abedini
- Department of Dermatology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - S Mortazavi
- Department of Pathology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - Y Daneshbod
- Department of Pathology and Laboratory Medicine, Loma Linda University, California, USA
- Shiraz Molecular Pathology Research Center, Dr. Daneshbod Lab, Shiraz, Iran
| | - S Shirian
- Zoonotic Disease Research Center, Shahrekord University, Shahrekord, Iran
- Biotechnology Research Inistitute, Shahrekord University, Shahrekord, Iran
- Shefa Neuroscience Research Center, Tehran, Iran
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Lajevardi V, Abedini R, Moghaddasi M, Nassiri SF, Goodarzi A. Bone mineral density is lower in male than female patients with plaque-type psoriasis in Iran. Int J Womens Dermatol 2017; 3:201-205. [PMID: 29234714 PMCID: PMC5715221 DOI: 10.1016/j.ijwd.2017.07.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Revised: 04/22/2017] [Accepted: 07/30/2017] [Indexed: 02/08/2023] Open
Abstract
Background There are many similarities with regard to contributing cytokines in patients with psoriasis and osteoporosis. A theory of probable relationship between these two entities has been proposed but there is no concordant consensus. The aim of this study was to evaluate bone mineral density (BMD) in patients with psoriasis. Method and materials This cross-sectional study of BMD was conducted with 64 eligible patients with psoriasis who were referred to the dermatology clinic of Razi hospital in Tehran, Iran in between 2011 and 2012. Results The mean T score of femoral neck was –1.17 and –0.49 in men and women, respectively, which was statistically significant (p = .047). The mean T score of the lumbar spine was –0.93 and –0.30 in men and women, respectively, but not statistically significant (p = .058). In total except with the exclusion of the study site (femur or lumbar), men and women did not have a statistically significant difference with regard to osteoporosis or osteopenia in BMD (p = .114). The Pearson correlation coefficient demonstrated a moderate inverse relationship between age and T score of the femoral neck and lumbar spine (r = –0.419 and –.406, respectively), which was statistically significant (p = .001). Although there was no statistically significant relationship between the Psoriasis Area and Severity Index (PASI) and T scores of the femoral neck (p = .596), a positive and weak correlation was observed between the PASI and T scores for the lumbar spine, which was statistically significant (r = 0.269; p = .03). Conclusion Patients with psoriasis had decreased bone density, which was more significant in men. Prevalence of osteoporosis showed no statistically significant difference when compared with the healthy population in Iran.
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Affiliation(s)
- V Lajevardi
- Department of Dermatology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - R Abedini
- Department of Dermatology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - M Moghaddasi
- Department of Rheumatology, Tehran University of Medical Sciences, Sina Hospital, Tehran, Iran
| | - S F Nassiri
- Department of Dermatology, Tehran University of Medical Sciences, Razi Hospital, Tehran, Iran
| | - A Goodarzi
- Department of Dermatology, Iran University of Medical Sciences, Rasool Akram Hospital, Tehran, Iran
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Abstract
BACKGROUND Manual patient handling is known to be the major source of musculoskeletal load among hospital nurses. OBJECTIVES The objectives of this study were to determine prevalence of musculoskeletal disorders (MSDs), assess patient manual handling risk and identify major factors associated with MSDs symptoms among hospital nursing staff. METHODS This cross-sectional study was conducted among 400 randomly selected nurses from 75 wards of 11 hospitals. Data were collected by demographic and Nordic musculoskeletal questionnaires together with MAPO checklist. Prevalence of MSDs was estimated with confidence interval of 95%. Chi-square test and independent sample t-test were used to investigate differences of MSDs prevalence for demographic variables between the subjects with and without MSDs. Multiple logistic regression analysis was performed (forward: Wald) to determine MSDs associated risk factors. RESULTS The means of age and job tenure in subjects were 30.76 ± 6.44 and 6.92 ± 5.75 years, respectively. Some form of musculoskeletal symptoms had been experienced during the last 12 months by 88.2% of the subjects. MAPO assessment revealed that 83.5% of the individuals were at risk. Statistical analysis showed that job tenure, nurse to bed ratio, gender, shift working and MAPO score were associated with MSDs (p< 0.05). CONCLUSIONS Prevalence of MSDs in hospital nursing personnel was high and the occurrence of MSDs was found to be associated with MAPO score. Based on the results, to improve working conditions, it is imperative to provide lifting equipment, implement training programs and increase nurse to bed ratio in hospitals.
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Affiliation(s)
- R Abedini
- Department of Occupational Health, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A R Choobineh
- Research Center for Health Sciences, Shiraz University of Medical Sciences, Shiraz, Iran
| | - J Hasanzadeh
- Department of Epidemiology, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran
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Abedini R, Soltanzadeh A, Faghih MA, Mohammadi H, Kamalinia M, Mohraz MH, Arassi M, Veyseh PP, Aghaei H, Hosseini SY. Health consequences of shift-work: the case of iranian hospital security personnel. Work 2016; 50:305-11. [PMID: 24594530 DOI: 10.3233/wor-141839] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Shift-work, which is an ergonomics issue in workplaces, can negatively affect workers. The security personnel of medical centers in Iran have multiple responsibilities and consequently are exposed to such unwanted situations as observing patients, disputing with patient's attendants, unwanted shift schedules, and being away from family for long periods. OBJECTIVE This study assessed health problems of Iranian hospital security personnel (shift-worker personnel) using the Survey of Shift-workers (SOS) questionnaire (Persian version). METHODS This cross-sectional study was conducted in seven medical centers (4 hospitals and 3 clinics). A total of 416 workers were surveyed: shift-workers (exposed group) (n=209) and non-shift-workers (unexposed group) (n=207). RESULTS The prevalence of adverse health effects was higher in shift-workers than day-workers. The level of education and mean Body Mass Index (BMI) in shift-workers were significantly higher compared with day-workers. The prevalence of gastrointestinal disorders, cardiovascular and psychological problems were also significantly higher in shift-workers compared with day-workers. CONCLUSIONS Overall, the prevalence of health problems among the security personnel of medical centers was high. Hence, it is recommended that personnel be put under periodic monitoring and receive medical counseling and treatment if there is any disorder.
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Affiliation(s)
- Roghayeh Abedini
- Occupational Health Department, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ahmad Soltanzadeh
- Occupational Health Department, School of Public Health, Qom University of Medical Sciences, Qom, Iran
| | - Mohammad Amin Faghih
- Social Determinants in Health Promotion Research Center, Hormozgan University of Medical Science, BandarAbbas, Iran
| | - Heidar Mohammadi
- Occupational Health Department, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mojtaba Kamalinia
- Occupational Health Department, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Majid Habibi Mohraz
- Occupational Health Department, School of Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Maziyar Arassi
- Occupational Health Department, School of Health, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Peyman Piran Veyseh
- Occupational Health Department, School of Health, Hamedan University of Medical Sciences, Hamedan, Iran
| | - Hamed Aghaei
- Occupational Health Department, School of Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Seyed Younes Hosseini
- Occupational Health Department, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Abstract
Linear psoriasis (LPs) is considered a rare clinical presentation of psoriasis, which is characterized by linear erythematous and scaly lesions along the lines of Blaschko. We report the case of a 20-year-old man who presented with asymptomatic linear and S-shaped erythematous, scaly plaques on right side of his trunk. The plaques were arranged along the lines of Blaschko with a sharp demarcation at the midline. Histological examination of a skin biopsy confirmed the diagnosis of psoriasis. Topical calcipotriol and betamethasone dipropionate ointments were prescribed for 2 months. A good clinical improvement was achieved, with reduction in lesion thickness and scaling. In patients with linear erythematous and scaly plaques along the lines of Blaschko, the diagnosis of LPs should be kept in mind, especially in patients with asymptomatic lesions of late onset.
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Affiliation(s)
- M Nasimi
- Autoimmune Bullous Disease Research Center, Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran.
| | - R Abedini
- Autoimmune Bullous Disease Research Center, Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - A Azizpour
- Autoimmune Bullous Disease Research Center, Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - A Nikoo
- Department of Dermatopathology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Abedini R, Salehi M, Lajevardi V, Beygi S. Patients with psoriasis are at a higher risk of developing nonalcoholic fatty liver disease. Clin Exp Dermatol 2015; 40:722-7. [PMID: 25958919 DOI: 10.1111/ced.12672] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/29/2014] [Indexed: 12/26/2022]
Abstract
BACKGROUND Psoriasis is a chronic, immune-mediated inflammatory skin disease with many extracutaneous manifestations. Several recent studies have indicated an increased prevalence of nonalcoholic fatty liver disease (NAFLD) among patients with psoriasis. In the present study, we investigated the prevalence of NAFLD in a population of Iranian patients with psoriasis. METHODS NAFLD was assessed and graded using ultrasonography in 123 patients with psoriasis and 123 healthy controls (HCs) matched by age, sex and body mass index (BMI). RESULTS The prevalence of NAFLD was significantly higher in the psoriatic group compared with the HC group (65.6% vs. 35%, P < 0.01, OR = 3.53). Median NAFLD grade was significantly greater in patients with psoriasis compared with HCs (grade 2 vs. grade 1, P < 0.01). In patients with psoriasis, NAFLD was associated with a higher frequency of hypertension (16.5%), abnormal liver function test (LFT) results (16.4%) and metabolic syndrome (46.6%). Moreover, patients with psoriasis and NAFLD tended to have significantly higher values for BMI, waist circumference (WC), Psoriasis Activity and Severity Index (PASI), and levels of serum triglyceride, cholesterol, low-density lipoprotein and fasting blood sugar (FBS). Multivariate logistic regression revealed that WC, PASI, LFT abnormalities, hypertension and cigarette smoking were independent predictors of NAFLD grade. CONCLUSIONS Our findings warrant a detailed assessment of metabolic comorbidities including NAFLD in patients with a primary diagnosis of psoriasis. Lifestyle modifications, including weight loss and smoking cessation, may be necessary for patients with psoriasis to decrease the risk and severity of NAFLD.
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Affiliation(s)
- R Abedini
- Autoimmune Bullous Diseases Research Center, Department of Dermatology, Tehran University of Medical Sciences, Tehran, Iran
| | - M Salehi
- Autoimmune Bullous Diseases Research Center, Department of Dermatology, Tehran University of Medical Sciences, Tehran, Iran
| | - V Lajevardi
- Autoimmune Bullous Diseases Research Center, Department of Dermatology, Tehran University of Medical Sciences, Tehran, Iran
| | - S Beygi
- Autoimmune Bullous Diseases Research Center, Department of Dermatology, Tehran University of Medical Sciences, Tehran, Iran.,National Elites Foundation of Iran, Tehran, Iran
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Beygi S, Lajevardi V, Abedini R. C-reactive protein in psoriasis: a review of the literature. J Eur Acad Dermatol Venereol 2013; 28:700-11. [PMID: 23998353 DOI: 10.1111/jdv.12257] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 07/26/2013] [Indexed: 12/26/2022]
Abstract
A great deal of research has addressed the elevation of C-reactive protein (CRP) among psoriatic patients and the role of this marker in assessment of disease severity and progression. However, there are some discrepancies in this area. We sought to figure out the relationship between CRP values and disease severity as well as the changes in marker levels after treatment through an extensive literature review. Comparison between CRP levels in psoriatic patients and those in healthy or non-psoriatic individuals was also another focus of this review. A thorough search in Pubmed and Embase was conducted for articles investigating different aspects of CRP measurement in patients with psoriasis. Overall, 32 articles were found to meet our inclusion criteria. Of 28 studies comparing the CRP values in psoriatic patients with those of controls, 24 found a statistically significant difference. In addition, 12 out of 16 papers examining the association between disease severity and CRP values noted significant results. With regard to CRP changes over the course of a treatment, all 15 studies addressing this issue revealed a significant decrease in marker levels. In conclusion, high CRP levels only for moderate and severe forms of disease might be inferred from the literature and there is no sufficient evidence suggesting a similar association for mild disease as well. Moreover, CRP may serve interchangeably with Psoriasis Area and Severity Index (PASI) as a measure of disease severity in the case of untreated psoriatic patients who do not have disease related arthritis. For other patients, however, a careful clinical examination and PASI calculation still remain the mainstay of severity assessment.
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Affiliation(s)
- S Beygi
- Autoimmune Bullous Diseases Research Center, Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran; National Elite Foundation, Tehran, Iran
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Neghab M, Abedini R, Soltanzadeh A, Iloon Kashkooli A, Ghayoomi SMA. Respiratory disorders associated with heavy inhalation exposure to dolomite dust. Iran Red Crescent Med J 2012; 14:549-57. [PMID: 23115717 PMCID: PMC3482327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Accepted: 01/01/2012] [Indexed: 12/03/2022]
Abstract
BACKGROUND Although dolomite is classified as a relatively non-toxic, nuisance dust, little information exists as to its potential to produce respiratory disorders following occupational exposure. The purpose of this study was, therefore, to evaluate the possible effects, if any, of heavy inhalation exposure to this chemical on the prevalence of respiratory symptoms, functional impairments and radiographic abnormalities of the lungs. METHODS The study population consisted of a group of 39 exposed subjects engaged in digging and excavating activities that were in operation for building a local dam, as well as 40 healthy non-exposed employees that served as the referent group. Subjects were interviewed and respiratory symptoms questionnaires, as suggested by the American Thoracic Society (ATS), were completed for them. Thereafter, they underwent chest X-ray and lung function tests. Additionally, using routine gravimetric techniques, personal dust monitoring for airborne inhalable and respirable dust was carried out at different dusty work sites. Finally to determine the chemical composition of the dust, it was analyzed by X-ray fluorescence (XRF) technique. RESULTS XRF revealed that the major component (50.52%) of the dust was calcium magnesium carbonate, dolomite. Additionally, levels of exposure to inhalable and respirable dust were estimated to be 51.7±24.31 and 23.0±18.11mg/m3, respectively. Statistical analysis of the data showed that symptoms such as regular cough, phlegm, wheezing, productive cough and shortness of breath were significantly (p<0.05) more prevalent among exposed workers. Similarly, the ratio of FEV1/FVC in exposed subjects was significantly different from that of non-exposed individuals. In contrast, no significant abnormalities were observed in the chest radiographs of both groups. CONCLUSIONS In conclusion, while these data cast doubt on the notion that dolomite is a harmless chemical, they provide evidence in favour of the proposition that exposure to high atmospheric concentrations of this compound is likely to be associated with respiratory symptoms.
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Affiliation(s)
- M Neghab
- PhD, Occupational Health Department, School of Health and Nutrition and Research Center for Health Sciences, Shiraz University of Medical Sciences, Shiraz, Iran ,Correspondence: Masoud Neghab, PhD, Professor of Occupational Health, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran .Tel.: +98-711-7251020, Fax: +98-711-2307594, E-mail:
| | - R Abedini
- MSc Student, Occupational Health Department, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A Soltanzadeh
- MSc, Occupational Health Department, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
| | - A Iloon Kashkooli
- Former MPh student, School of Health and Nutrition, Shiraz University of Medical Sciences, Shiraz, Iran
| | - S M A Ghayoomi
- Pneumologist, Associate professor, Department of Internal Medicine, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran.
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Haddadzadeh HR, Athari SS, Abedini R, Khazraii nia S, Khazraii nia P, Nabian S, Haji-Mohamadi B. One-Humped Camel (Camelus dromedarius) Infestation with Linguatula serrata in Tabriz, Iran. J Arthropod Borne Dis 2010; 4:54-9. [PMID: 22808389 PMCID: PMC3385538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2009] [Accepted: 04/07/2010] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Linguatula serrata is one of well known members of Pentastomida which infects both human and animals. The aim of this study was to evaluate the prevalence of L. serrata in mesenteric lymph nodes, livers and lungs of camels slaughtered in Tabriz area, Iran. METHODS Mesenteric lymph nodes (MLNs), livers and lungs of 140 one-humped camels slaughtered in Tabriz, north-west of Iran were investigated for nymphs of L. serrata from July 2007 to June 2008. The organs were examined macroscopically and then a tissue digestion method was also done for investigation of liver and lung of the camels that had infected MLN. The liver and lung samples were mostly taken from condemned and rejected part of organs. RESULTS The infection rate of L. serrata nymphs in MLNs, livers and lungs was 13.5%, 1.4% and 1.4% respectively. The number of isolated nymph in infected lymph nodes varied from 2 to 18 with a mean of 4.78. Only one nymph was isolated from each infected livers and lungs. The infection rate increased with age (P< 0.05). No significant difference in different sex groups and seasons was observed (P> 0.05). CONCLUSION Considering this fact that consumption of undercooked camel liver was not common in the studied area, the zoonotic importance of this infection should be concluded.
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Affiliation(s)
- HR Haddadzadeh
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Iran,Corresponding author: Dr Hamid Reza Haddadzadeh,
| | - SS Athari
- Faculty of Veterinary Medicine, University of Urmia, Iran
| | - R Abedini
- Faculty of Veterinary Medicine, University of Tabriz, Iran
| | - S Khazraii nia
- Biology Section, Faculty of Veterinary Medicine, University of Tehran, Iran
| | - P Khazraii nia
- Department of Clinical Science, Faculty of Veterinary Medicine, University of Tehran, Iran
| | - S Nabian
- Department of Parasitology, Faculty of Veterinary Medicine, University of Tehran, Iran
| | - B Haji-Mohamadi
- Department of Food Hygiene, Faculty of Veterinary Medicine, University of Tehran, Iran
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Valikhani M, Kavusi S, Chams-Davatchi C, Daneshpazhooh M, Barzegari M, Ghiasi M, Abedini R. Pemphigus and associated environmental factors: a case?control study. Clin Exp Dermatol 2007; 32:256-60. [PMID: 17355277 DOI: 10.1111/j.1365-2230.2007.02390.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Recent reports have revealed the relatively high incidence of pemphigus in Iran. Occupational exposure and personal habits have been suggested to play a role in the aetiopathogenesis of this life-threatening disease. AIM In order to analyse the association of environmental factors with pemphigus, we conducted a case-control study to evaluate the possible role of smoking, pesticide exposure and hormonal factors in Iran. METHODS This study was conducted in Iran using a structured questionnaire. Questions included information on patients' smoking habits, occupational exposure to pesticides, use of oral contraception (OC) and number of pregnancies. RESULTS We enrolled 210 patients with pemphigus and 205 control subjects. Fewer of patients with pemphigus (17.1%) reported a current or past history of smoking, which was statistically different from the control group (27.3% smokers). The duration of smoking and the number of cigarettes smoked daily was also significantly lower in patients. Although OC use was significantly higher in women with pemphigus, the mean number of pregnancies was not different between the two groups. Occupational exposure to pesticides was significantly higher in patients with pemphigus (14.8%) than in controls (5.4%); patients with pemphigus were exposed to pesticides three times more often than were healthy subjects. CONCLUSION As a positive history of smoking was lower in patients with pemphigus compared with healthy subjects, it seems that smoking is a protective factor in pemphigus. This should encourage further investigations, searching for novel therapies. If pesticides and OC are confirmed as triggering factors, their cessation might reduce the need for pharmacological therapy.
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Affiliation(s)
- M Valikhani
- Pemphigus Researh Center, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
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