40 research outputs found

    Petroleum hydrocarbon assessment in the wastewaters of petrochemical special economic zone and sediment benchmark calculation of the coastal area - northwest of the Persian Gulf

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    Petrochemical industries can potentially impact the environment due to their activities and products. This case study has considered adverse effects of petrochemical industries that are located inside the PETZONE with respect to the presence of polycyclic aromatic hydrocarbons and total petroleum hydrocarbon in wastewater effluents. The average concentrations of ∑PAHs group I and II were lower than the guideline values, thus the effluents of the study area can be considered unpolluted. Also, the average concentration of TPH was lower than the guideline value at all almost stations except the effluent outlets of the Razi and Imam Khomeini petrochemical (BI-PC) companies which are proximal to Khowr-e Musa Bay. Thus, they may have an adverse impact on the aquatic ecosystem of the Bay. Therefore, the concentration of TPH was monitored in the sediments of the Bay (around the PETZONE coastal area) which was relatively moderate compared in the study area. Also, the sum of Chronic Potency Ratio of PAHs in sediments showed that the chronic benchmark was not more than the guideline at all stations (it is exceeded when the sum exceeds 1.0) except in the vicinity of the Aromatic effluent outlet of BI-PC. Thus, the chronic benchmark at this station indicates that it has the potential to cause a chronic effect on sediment-residence organisms like crabs, clams and worms. Moreover, PAHs concentration level in this station approached the NOAA sediment quality guideline value (ERL) of 4000 (ng/g dry weight)

    Smoking patterns in Great Britain: the rise of cheap cigarette brands and roll your own (RYO) tobacco

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    This is the final version. Available from Oxford University Press via the DOI in this record.Background In Britain, the tobacco industry segments cigarettes into four price categories—premium, mid-price, economy and ultra-low-price (ULP). Our previous work shows that tobacco companies have kept ULP prices stable in real terms. Roll your own (RYO) tobacco remains cheaper still. Methods Analysis of 2001–08 General Household Survey data to examine trends in use of these cheap products and, using logistic regression, the profile of users of these products. Results Among smokers, the proportion using cheap products (economy, ULP and RYO combined) increased significantly in almost all age groups and geographic areas. Increases were most marked in under 24 year olds, 76% of whom smoked cheap cigarettes by 2008. All cheap products were more commonly used in lower socio-economic groups. Men and younger smokers were more likely to smoke RYO while women smoked economy brands. Smokers outside London and the South East of England were more likely to smoke some form of cheap tobacco even once socio-economic differences were accounted for. Conclusions This paper demonstrates that cheap tobacco use is increasing among young and disadvantaged smokers compromising declines in population smoking prevalence. Thus, tobacco industry pricing appears to play a key role in explaining smoking patterns and inequalities in smoking

    Effect of coenzyme Q10 supplementation on fatigue: A systematic review of interventional studies

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    Aims: A number of studies have examined the beneficial effects of Coenzyme Q10 (CoQ10) on fatigue in different population, but the findings have been inconclusive. Herein, we systematically reviewed available interventional studies to elucidate the overall effects of CoQ10 supplementation on fatigue among adolescent and adult population. Methods: PubMed, Cochrane's library, Science direct, Scopus, Google scholar and ISI web of science databases were searched for all available literature until April 2018 for studies assessing the effects of CoQ10 supplementation on fatigue. The Cochrane bias assessment tool were used to assess the quality of studies. Results: A total of 16 studies out of 1316 met our inclusion criteria and included in our systematic review. Among included studies 10 of them showed significant beneficial effects (p < 0.05) of CoQ10 supplementation on fatigue status among healthy, fibromyalgia, statin-related fatigue, multiple sclerosis and end-stage heart failure subjects. CoQ10 supplementation could alleviate fatigue, but differences between studies population should be taken into account. Conclusion: It seems CoQ10 has better therapeutic effects in statin-related fatigue and fibromyalgia patients compared with the other disease related fatigue. Finally, in order to draw a firm link between CoQ10 and fatigue, more clinical trials with adequate sample size and with sufficient follow-up periods are needed

    The Association Between Dietary Zinc Intake and Health Status, Including Mental Health and Sleep Quality, Among Iranian Female Students

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    Epidemiological studies have suggested that there is an association between diet and mental health. The aim of the current study was to explore the association between dietary zinc intake and risk of depression, anxiety, and sleep quality distortion among female students of the Semnan University of Medical Sciences in a cross-sectional study. From January through October 2019, 142 female students were randomly selected from the Department of Nutrition and Food Science at the Semnan University of Medical Sciences by simple random sampling. Food frequency questionnaires (FFQs) were used to assess participants� dietary intake over the past 12 months. Depression, anxiety, and sleep quality were examined by the Beck Depression Inventory-II (BDI-II), Beck Anxiety Inventory (BAI), and Pittsburgh Sleep Quality Index (PSQI), respectively. In the analysis, the crude model was adjusted for total energy intake (kcal), while the model was adjusted for energy intake (kcal), age, economic status, physical activity level, serum vitamin D level, and body mass index. Dietary zinc intake is significantly associated with depression (odds ratio (OR) (95 confidence interval (CI)): 2.34 (0.38�4.30)) and anxiety (OR (95 CI): 3.43 (2.36�4.50)), sleep disorders (OR (95 CI): 3.65 (2.16�5.13)), sleep duration (OR (95 CI): 2.62 (0.39�4.86)), and daytime dysfunction (OR (95 CI): 5.31 (2.84�7.78)) in the model, as well as sleep delay (OR (95 CI): 1.80 (1.05�2.55)) and mental quality of sleep (OR (95 CI): 1.63 (1.10�2.15)) in the crude analysis. This cross-sectional study supports the inverse association between dietary zinc intake and mood disorders, including depression and anxiety, and some indices of sleep disturbance in the Iranian female students. Further cohort or intervention studies are required to draw a firm link between dietary zinc intake and mental health. © 2020, Springer Science+Business Media, LLC, part of Springer Nature

    Effect of Probiotic Consumption on Immune Response in Athletes: A Meta-analysis

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    AbstractThe possible effect of probiotic interventions on immunological markers in athletes is inconclusive. Therefore, to synthesize and quantitatively analyze the existing evidence on this topic, systematic literature searches of online databases PubMed, Scopus, Cochrane Library, and ISI Web of Sciences was carried out up to February 2021 to find all randomized controlled trials (RCTs) concerning the immunological effects of probiotics in athletes. In the random-effects model, weighted mean difference (WMD) and 95% confidence interval (CI) explained the net effect. The authors assessed the likelihood of publication bias via Egger’s and Begg’s statistics. A total of 13 RCTs (836 participants) were retrieved. Probiotic consumption reduced lymphocyte T cytotoxic count significantly (WMD=−0.08 cells×109/L; 95% CI: −0.15 to −0.01; p=0.022) with evidence of moderate heterogeneity (I 2=59.1%, p=0.044) and monocyte count when intervention duration was ≤ 4 weeks (WMD=−0.08 cells×109/L; 95% CI: −0.16 to −0.001; I 2=0.0%). Furthermore, leukocyte count was significantly elevated (WMD=0.48 cells×109/L; 95% CI: 0.02 to 0.93; I 2=0.0%) when multi-strain probiotics were used. Probiotic supplements may improve immunological markers, including lymphocyte T cytotoxic, monocyte, and leukocyte in athletes. Further randomized controlled trials using diverse strains of probiotics and consistent outcome measures are necessary to allow for evidence-based recommendations.</jats:p

    Effects of cinnamon supplementation on expression of systemic inflammation factors, NF-kB and Sirtuin-1 (SIRT1) in type 2 diabetes: A randomized, double blind, and controlled clinical trial

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    Background and objectives: NF-kB, SIRT1 and systemic inflammation factors including hs-CRP, IL-6 and TNF-α accelerate atherosclerosis pathogenesis. Our purpose was to evaluate the effect of daily supplementation of three-gram cinnamon on plasma levels of NF-kB, SIRT, hs-CRP, IL-6 and TNF-α among type 2 diabetes patients. Subjects and methods: A randomized, double blind, and controlled clinical trial was performed with 44 adult patients who were 25 to 70 years old with type 2 diabetes, randomized to two intervention (n = 22) and control (n = 22) groups differing by daily three grams cinnamon supplementation and placebo for 8 weeks, respectively. The plasma levels of NF-kB, SIRT, hs-CRP, IL-6 and TNF-α were measured by ELISA assay at the beginning and end of the study. Results: After 8-week intervention, 39 subjects (n = 20 in the cinnamon and n = 19 in the placebo groups) ended up the trial. It was not observed significant difference in levels of hs-CRP (P = 0.29), TNF-α (P = 0.27), IL-6 (P = 0.52), and Sirtuin-1 (P = 0.51) in between group comparison. While, the result showed significant difference in levels of NF-kB (P = 0.02) between groups. As well as, in among group comparison, there was not observed significant differences except in hs-CRP (P = 0.008) in placebo group. Conclusions: This study elucidated that cinnamon supplementation has no beneficial effects in reduction of NF-kB, SIRT1, hs-CRP, IL-6 and TNF-α levels in type 2 diabetes patients which have a considerable role in development of atherogenesis. © 2020 The Author(s)
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