283 research outputs found

    Analysis of Adipokines and some Steroid Hormones in Myocardial Infarction

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    الموت الشامل بسبب أمراض القلب والأوعية الدموية هو السبب السائد للوفاة، ومرض القلب الإقفاري هو السبب البارز. هناك ميل لزيادة حساسية الأساليب في المختبر المعاصر لتشخيص الأمراض القلبية الوعائية، وتقييم المفتاح كمؤشرات حيوية للأمراض القلبية الوعائية. المهمة العاجلة هي البحث عن مؤشرات مختلفة كأداة للكشف المبكر عن احتشاء عضلة القلب ومراقبته. ضمت هذه المحاولة ١١٧ متطوعًا، تم تسجيلهم من كلا الجنسين في الفئة العمرية من ٣٢ إلى ٦٤ عامًا. تم تصنيف المتطوعين إلى مجموعتين: ٦٧ مريضًا من احتشاء عضلة القلب، واحتضنت المجموعات الأخرى ٥٠ فردًا سليمًا. تم جمع عينات الدم وتوجيهها للتحليل الكيميائي الحيوي لتقييم مستويات هرمون الاستراديول والتستوستيرون والبروجسترون والأديبونكتين واللبتين والدهون في كل مجموعة. بناءً على التقييم الإحصائي لمعلمات المؤشر الحيوي، يمكن الإعلان عن الاستنتاج التالي من هذه الدراسة، وهو انخفاض كبير في مستويات هرمون التستوستيرون والبروتين  الدهني عالي الكثافة (P <0.001) في احتشاء عضلة القلب، ضمن P <0.061 المرتفعة بشكل ملحوظ من مستويات البروجسترون في عضلة القلب مرضى الاحتشاء بالمقارنة مع الأفراد الأصحاء. أشارت الاختبارات الكيميائية الحيوية المتبقية إلى مستويات مرتفعة بشكل ملحوظ في المرضى الذين يعانون من احتشاء عضلة القلب مثل استراديول (P <0.001) ، أديبونكتين (P <0.001)، ليبتين (P <0.001) ، الكلي الكوليسترولالكوليسترول (P <0.001) ، الدهون الثلاثية P) <0.001) ومستويات البروتين الدهني منخفض الكثافة ) P <0.001). تُظهر الأديبوكينات (أديبونكتين ، لبتين) وبعض هرمونات الستيرويد (استراديول ، هرمون التستوستيرون) أدوارًا حاسمة في تحسين أمراض التمثيل الغذائي والقلب والأوعية الدموية ويمكن استخدامها كمؤشر حيوي للتعرض لاحتشاء عضلة القلب، والسلوك الطبي والشدة. يقدم هذا الإقرار التشخيص المبكر للمرض وتطوره.The most common cause of death is cardiovascular disease (CVD), with ischemic heart disease being the most notable type.  There is a propensity to raise the sensitivity of methods in contemporary laboratory for diagnosing of CVD, and assessing key as CVD bio-indicators. The urgent task is to seek for different indicators as a hopeful tool for early detection and monitoring of myocardial infarction in blood samples only. This study comprised 117 Volunteers, recorded with both genders in the age range of 32-64 years old. The volunteers were categorized into two groups: 67patients of myocardial infarction, other group embraced 50 healthy individuals. The samples of blood were collected and directed for biochemical analysis to evaluate estradiol, testosterone, progesterone, adiponectin, leptin, and lipid profile [total cholesterol, triglycerides, high density lipoprotein (HDL), and low-density lipoprotein (LDL)] levels in each group. The following conclusion can be drawn from this study based on statistical assessment of bio-indicator parameters, significantly reduced of testosterone and HDL (P <0.001) levels in myocardial infarction, within non-significantly elevated P <0.061 of progesterone levels in myocardial infarction patients as compared with healthy individuals. The remaining biochemical tests indicated significantly elevated levels in patients with myocardial infarction such as estradiol (P <0.001), adiponectin (P <0.001), leptin (P <0.001), total cholesterol (P <0.001), triglycerides (P <0.001) and LDL (P <0.001) levels. Adipokines (adiponectin, leptin) and some steroid hormones (estradiol, testosterone) show crucial roles in the improvement of metabolic and cardiovascular diseases and may be utilized as bio-pointer for myocardial infarction exposure, medical conduct and severity. This acknowledgment offers early diagnosis of disease and progression.

    Modeling Social Transmission Dynamics of Unhealthy Behaviors for Evaluating Prevention and Treatment Interventions on Childhood Obesity

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    Research evidence indicates that obesity has spread through social networks, but lever points for interventions based on overlapping networks are not well studied. The objective of our research was to construct and parameterize a system dynamics model of the social transmission of behaviors through adult and youth influence in order to explore hypotheses and identify plausible lever points for future childhood obesity intervention research. Our objectives were: (1) to assess the sensitivity of childhood overweight and obesity prevalence to peer and adult social transmission rates, and (2) to test the effect of combinations of prevention and treatment interventions on the prevalence of childhood overweight and obesity. To address the first objective, we conducted two-way sensitivity analyses of adult-to-child and child-to-child social transmission in relation to childhood overweight and obesity prevalence. For the second objective, alternative combinations of prevention and treatment interventions were tested by varying model parameters of social transmission and weight loss behavior rates. Our results indicated child overweight and obesity prevalence might be slightly more sensitive to the same relative change in the adult-to-child compared to the child-to-child social transmission rate. In our simulations, alternatives with treatment alone, compared to prevention alone, reduced the prevalence of childhood overweight and obesity more after 10 years (1.2–1.8% and 0.2–1.0% greater reduction when targeted at children and adults respectively). Also, as the impact of adult interventions on children was increased, the rank of six alternatives that included adults became better (i.e., resulting in lower 10 year childhood overweight and obesity prevalence) than alternatives that only involved children. The findings imply that social transmission dynamics should be considered when designing both prevention and treatment intervention approaches. Finally, targeting adults may be more efficient, and research should strengthen and expand adult-focused interventions that have a high residual impact on children

    Affinity-Division Multiplexing for Molecular Communications with Promiscuous Ligand Receptors

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    A key challenge in Molecular Communications (MC) is low data transmission rates, which can be addressed by channel multiplexing techniques. One way to achieve channel multiplexing in MC is to leverage the diversity of different molecule types with respect to their receptor binding characteristics, such as affinity and kinetic binding/unbinding rates. In this study, we propose a practical multiplexing scheme for MC, which is based on the diversity of ligand-receptor binding affinities. This method requires only a single type of promiscuous receptor on the receiver side, capable of interacting with multiple ligand types. We analytically derive the mean Bit Error Probability (BEP) over all multiplexed MC channels as a function of similarity among ligands in terms of their receptor affinities, the number of receptors, the number of multiplexed channels, and the ratio of concentrations encoding bit-1 and bit-0. We investigate the impact of each design parameter on the performance of multiplexed MC system

    Clinical significance of salivary, serum, nitric oxide, and arginase in breast cancer

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    Background: Breast cancer is the most commonly diagnosed cancer among females. A source of sampling for clinical diagnosis is saliva which has been utilized and it is a promising approach as collecting saliva is relatively easy and non-invasive. Over the past two decades, utilizing saliva as a biomarker, specifically for early cancer diagnosis has attracted much research interest. Aim: To alter the sample collection from blood to saliva for some components such as nitric oxide (NO) and arginase, in order to detect an easy, earlier and noninvasive diagnostic test as biomarkers and prognostic tools in patients with breast cancer. Methods: A total of 73 female volunteers were participated in this study, 25 healthy volunteers compared with 48 patients with breast cancer in order to estimate and compare both salivary and blood level components such as NO and arginase. Results: The mean blood and salivary samples for both nitric oxide and arginase levels were significantly raised in patients with breast cancer when they compared with controls (p<0.001). Conclusions: In this study the changing of salivary levels of NO and arginase as compared with blood may be used as a non-invasive diagnostic tool alternative to serum testing component, which were significantly increased in patients with breast cancer in both blood and saliva and also, may be used as biomarkers and tumor progression tests in diagnosing of breast cancer

    Toward a Commonly Shared Public Policy Perspective for Analyzing Risk Coping Strategies

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    The concept of risk has received scholarly attention from a variety of angles in the social, technical, and natural sciences. However, public policy scholars have not yet generated a comprehensive overview, shared understanding and conceptual framework of the main problem-solving approaches applied by governments in coping with risks. In this regard, our main aim is to examine existing perspectives on prevailing risk coping strategies, find a common denominator among them and contribute to current policy and risk science literature through providing a conceptual framework that systematically spans the spectrum of risk coping strategies and incorporates the essence of the most relevant insights. To this end, we first examine the concept of risk in-depth by exploring various definitions and types of risk. We then review different approaches proposed by different strands of research for addressing risk. Finally, we assess current knowledge and develop an amalgamated perspective for examining how risks can be addressed by classifying them into six general types of response (no response; prevention; control; precaution; toleration; and adaptation) as well as indicators to identify these responses. We argue that these strategies can function as a heuristic tool fo

    Constraints on a Parity-Conserving/Time-Reversal-Non-Conserving Interaction

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    Time-Reversal-Invariance non-conservation has now been unequivocally demonstrated in a direct measurement at CPLEAR. What about tests of time-reversal-invariance in systems other than the kaon system? Tests of time-reversal-invariance belong to two classes: searches for parity violating (P-odd)/time-reversal-invariance-odd (T-odd) interactions, and for P-even/T-odd interactions (assuming CPT conservation this implies C-conjugation non-conservation). Limits on a P-odd/T-odd interaction follow from measurements of the electric dipole moment of the neutron (with a present upper limit of 6 x 10^-26 e.cm [95% C.L.]). It provides a limit on a P-odd/T-odd pion-nucleon coupling constant which is less than 10^-4 times the weak interaction strength. Experimental limits on a P-even/T-odd interaction are much less stringent. Following the standard approach of describing the nucleon-nucleon interaction in terms of meson exchanges, it can be shown that only charged rho-meson exchange and A_1 meson exchange can lead to a P-even/T-odd interaction. The better constraints stem from measurements of the electric dipole moment of the neutron and from measurements of charge-symmetry breaking in neutron-proton elastic scattering. The latter experiments were executed at TRIUMF (497 and 347 MeV) and at IUCF (183 MeV). Weak decay experiments may provide limits which will possibly be comparable. All other experiments, like gamma decay experiments, detailed balance experiments, polarization - analyzing power difference determinations, and five-fold correlation experiments with polarized incident nucleons and aligned nuclear targets, have been shown to be at least an order of magnitude less sensitive.Comment: 15 pages LaTeX, including 5 PostScript figures. Uses ijmpe1.sty. To appear in International Journal of Modern Physics E (IJMPE). Slight change in short abstrac

    The impact of organizational values on employee performance, an empirical study on banking industry in Kurdistan Region

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    The aim of this study was to test the impact of organizational values on employee performance in banking industry in Kurdistan region. Four groups of organizational values are identified in this study based on a study accomplished by Woodcock and Francis (1989) [Woodcock & Francis, 1989).Unblocking organizational values. 1st ed., USA.]; namely managing tasks values, managing environment values, managing organization values, and managing relationship values. These were determined as independent variables and employee performance was considered as a dependent variable. Researchers assumed there is a statistically significant correlation between organizational values and employee performance. The primary data used in this study were collected from a sample of 75 employees in different banks in Kurdistan region. The data were analyzed by using correlation and multiple regression analysis by using SPSS software. The results illustrate that organizational values were significantly and positively associated with employee performance in banking industry in Kurdistan region, and the strength of the correlation coefficient vary from one variable to another. Managing tasks received the highest value, with a correlation coefficient of 0.636 when the level of significant was one percent

    A probable outbreak of toxoplasmosis among boarding school students in Turkey

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    ABSTRACTIn total, 171 students from a boarding school in Izmir, Turkey, with mild and non-specific symptoms of toxoplasmosis, were screened during September–October 2002. All 171 students were seropositive for Toxoplasma gondii IgG and IgM. Of 43 students tested, 40 (93%) had low IgG avidity. None showed evidence of ophthalmic involvement. The data suggest that T. gondii may spread rapidly in close living conditions, possibly following exposure to cat litter. This is the largest recent outbreak of toxoplamosis described in the medical literature

    COMBINED EFFECT OF FLUSHING AND HORMONAL TREATMENT ON REPRODUCTIVE PERFORMANCE OF LOCAL GOAT.

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    This study was aimed to investigate the combined effect of flushing and hormonal treatment on reproductive aspects of local goats, 60 adult does were divided equally into two groups, the first was fed concentrate plus grazing commencing 3 weeks prior to mating and continue for 4 weeks post mating (flushed) F, whereas the 2nd group was raised on pasture only (P). All does were synchronized using impregnated with 40 mg medroxy acetate for 14 days. Following sponges withdrawn, the flushed and non- flushed does were then sub-divided in to four equal groups, the 1st flushed does were injected with 250 i.u hCG (T1), the 2nd only flushed (T2), the 3rd was only injected with hCG (T3) and the 4th was the control (T4). Results revealed that estrus response was significantly higher in T1 (100%), followed by T3 and T4 (86.66%) and T2 (80%). Fertility rate was significantly (P˂0.01) higher in T1 (80%) followed by T3 (73.33%), T4 (66.66%) and T2 (60.0%). Highest kidding rate (120.0%) and litter size (1.50) was noticed in T1, while the lowest kidding rate (86.66%) were found in T2 and T4. Insulin level was significantly higher in flushed does (6.04) compared to non-flushed does (2.81 uIU/ML)

    Modal Rayleigh-like streaming in layered acoustofluidic devices

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    Classical Rayleigh streaming is well known and can be modelled using Nyborg’s limiting velocity method as driven by fluid velocities adjacent to the walls parallel to the axis of the main acoustic resonance. We have demonstrated previously the existence and the mechanism of four-quadrant transducer plane streaming patterns in thin-layered acoustofluidic devices which are driven by the limiting velocities on the walls perpendicular to the axis of the main acoustic propagation. We have recently found experimentally that there is a third case which resembles Rayleigh streaming but is a more complex pattern related to three-dimensional cavity modes of an enclosure. This streaming has vortex sizes related to the effective wavelength in each cavity axis of the modes which can be much larger than those found in the one-dimensional case with Rayleigh streaming. We will call this here modal Rayleigh-like streaming and show that it can be important in layered acoustofluidic manipulation devices. This paper seeks to establish the conditions under which each of these is dominant and shows how the limiting velocity field for each relates to different parts of the complex acoustic intensity patterns at the driving boundaries
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