58 research outputs found

    Endothelial nitric oxide synthase gene Glu298Asp polymorphism and risk of preeclampsia in South East of Iran

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    Preeclampsia (PE) is the most serious complication of pregnancy that causes maternal and fetal morbidity and mortality. Although the exact pathophysiology of PE is unknown, a large number of studies have shown that abnormalities in nitric oxide (NO) synthesis may contribute to the development of this disorder. There are some evidences that polymorphisms of the endothelial nitric oxide synthase (eNOS) gene affect NO production and have been associated with hypertension and PE in some populations. Therefore the aim of this study was to assess the relation of the Glu298Asp eNOS polymorphism and PE in an Iranian population. We compared the frequency of the Glu298Asp polymorphism in 147 women with PE and 137 healthy pregnant control subjects by polymerase chain reaction- restriction fragment length polymorphism (PCR-RFLP) method. The frequencies of Glu298Asp genotypes were significantly different between PE women and controls (p < 0.001). The frequency of Asp allele was 0.32 in PE patients and 0.20 in controls and was significantly different (p < 0.001). The risk of PE was 2.4 fold in pregnant women with Asp allele. In conclusion, the Asp allele could be a risk factor for PE in South East of Iran.Key words: Nitric oxide synthase, polymorphism, preeclampsia, pregnancy

    Continuum modes of nonlocal field theories

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    We study a class of nonlocal Lorentzian quantum field theories, where the d'Alembertian operator “box” is replaced by a non-analytic function of the d'Alembertian, f (“box”). This is inspired by the Causal Set program where such an evolution arises as the continuum limit of a wave equation on causal sets. The spectrum of these theories contains a continuum of massive excitations. This is perhaps the most important feature which leads to distinct/interesting phenomenology. In this paper, we study properties of the continuum massive modes in depth. We derive the path integral formulation of these theories. Meanwhile, this derivation introduces a dual picture in terms of local fields which clearly shows how continuum massive modes of the nonlocal field interact. As an example, we calculate the leading order modification to the Casimir force of a pair of parallel planes. The dual picture formulation opens the way for future developments in the study of nonlocal field theories using tools already available in local quantum field theories

    Global, regional, and national burden of disorders affecting the nervous system, 1990–2021: a systematic analysis for the Global Burden of Disease Study 2021

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    BackgroundDisorders affecting the nervous system are diverse and include neurodevelopmental disorders, late-life neurodegeneration, and newly emergent conditions, such as cognitive impairment following COVID-19. Previous publications from the Global Burden of Disease, Injuries, and Risk Factor Study estimated the burden of 15 neurological conditions in 2015 and 2016, but these analyses did not include neurodevelopmental disorders, as defined by the International Classification of Diseases (ICD)-11, or a subset of cases of congenital, neonatal, and infectious conditions that cause neurological damage. Here, we estimate nervous system health loss caused by 37 unique conditions and their associated risk factors globally, regionally, and nationally from 1990 to 2021.MethodsWe estimated mortality, prevalence, years lived with disability (YLDs), years of life lost (YLLs), and disability-adjusted life-years (DALYs), with corresponding 95% uncertainty intervals (UIs), by age and sex in 204 countries and territories, from 1990 to 2021. We included morbidity and deaths due to neurological conditions, for which health loss is directly due to damage to the CNS or peripheral nervous system. We also isolated neurological health loss from conditions for which nervous system morbidity is a consequence, but not the primary feature, including a subset of congenital conditions (ie, chromosomal anomalies and congenital birth defects), neonatal conditions (ie, jaundice, preterm birth, and sepsis), infectious diseases (ie, COVID-19, cystic echinococcosis, malaria, syphilis, and Zika virus disease), and diabetic neuropathy. By conducting a sequela-level analysis of the health outcomes for these conditions, only cases where nervous system damage occurred were included, and YLDs were recalculated to isolate the non-fatal burden directly attributable to nervous system health loss. A comorbidity correction was used to calculate total prevalence of all conditions that affect the nervous system combined.FindingsGlobally, the 37 conditions affecting the nervous system were collectively ranked as the leading group cause of DALYs in 2021 (443 million, 95% UI 378–521), affecting 3·40 billion (3·20–3·62) individuals (43·1%, 40·5–45·9 of the global population); global DALY counts attributed to these conditions increased by 18·2% (8·7–26·7) between 1990 and 2021. Age-standardised rates of deaths per 100 000 people attributed to these conditions decreased from 1990 to 2021 by 33·6% (27·6–38·8), and age-standardised rates of DALYs attributed to these conditions decreased by 27·0% (21·5–32·4). Age-standardised prevalence was almost stable, with a change of 1·5% (0·7–2·4). The ten conditions with the highest age-standardised DALYs in 2021 were stroke, neonatal encephalopathy, migraine, Alzheimer's disease and other dementias, diabetic neuropathy, meningitis, epilepsy, neurological complications due to preterm birth, autism spectrum disorder, and nervous system cancer.InterpretationAs the leading cause of overall disease burden in the world, with increasing global DALY counts, effective prevention, treatment, and rehabilitation strategies for disorders affecting the nervous system are needed

    ロクーン・シグマ4型テレメータ送信機

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    Type 2 diabetes mellitus (T2D) as an important metabolic disorder is accompanied by dysregulation in lipid metabolism. Sterol regulatory element-binding factor-2 (SREBF-2) gene has a substantive role in lipid metabolism. Recently published report indicated the overexpression of this gene in diabetic patients. So, in this preliminary study we evaluated the effects of three common single nucleotide polymorphisms (SNPs), rs1052717G/A, rs2267439C/T, and rs2267443G/A in risk of T2D in a sample of Iranian population. Present case-control study consists of 250 patients with endocrinologically approved T2D and 250 healthy controls. The variants genotyped by using tetra amplification refractory mutation system polymerase chain reaction (Tetra ARMS-PCR) method. The findings demonstrated that the rs2267439C/T polymorphism increased the risk of T2D in all measured inheritance models (Codominant1; p�=�0.003, codominant2; p�=�0.014, dominant; p�<�0.0001, recessive; p�=�0.037, over-dominant; p�=�0.0025, and log-additive; p�=�0.0048) while our results did not show statistically association between rs1052717G/A and rs2267443G/A SNPs and T2D development. The current investigation indicated that the rs2267439C/T polymorphism in the SREBF-2 gene increased the T2D susceptibility in an Iranian population. Further studies with different ethnicities and more extensive sample sizes are demanded to confirm our finding. Copyright © 2018 Elsevier B.V. All rights reserved

    A feasibility study on the implementation of teleconsultation in tuberculosis patients in Zabol City of Iran

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    Teleconsultation can be used for tuberculosis patients, especially in deprived area. We surveyed all of 60 employees in health centers and tuberculosis center in such area in Iran about feasibility (organizational, technical, human and environmental readiness) of implementing teleconsultation and its barriers. We found that human readiness was moderate and other aspects were weak. Furthermore, the main obstacles were the shortage of computer equipment (40), technical infrastructure (35), lack of funds (33.3), lack of awareness (33.3), and employee resistance (33.3). Implementing teleconsultation for tuberculosis patients is not completely feasible in this area and requires improvement in organizational, technical and environmental factors. © 2018 European Federation for Medical Informatics (EFMI) and IOS Press
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