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bsj-7594
Lead acetate deteriorates the improvement effect of L-arginine and tetrahydrobiopterin on endothelin-1 receptors activity in rat aorta
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Endothelin-1 (ET-1) is a potent vasoconstrictor hormone that has been identified as an important factor
responsible for the development of cardiovascular dysfunctions. ET-1 exerts its vasoconstrictor activity
through two pharmacologically distinct receptors, ETA and ETB that are found in vascular smooth muscle
cells (VSMCs) and the vasodilator activity through an ETB receptor located on endothelial cells. This study
aimed to show the impact of 1µM L-arginine (LA), 100µM tetrahydrobiopterin (BH4), and their combined
effect on ET-1 activity in both lead-treated and lead-untreated rat aortic rings. This means, investigating how
endothelial dysfunction reverses the role of nitric oxide precursor and cofactor. In this study, Rat aortic rings
have been pre-incubated with BH4, LA and their combination. Subsequently, the aortic rings were preincubated with 200µM N-Nitro-L-arginine methyl ester (L-NAME) and 0.5µM BQ-123. Then, the vascular
response to cumulative doses of rat ET-1 was analyzed in each of the above-mentioned groups (LA, BH4, LA
& BH4, L-NAME, BQ-123), in the presence and absence of lead acetate 1µM Pb (C2H3O2)2. ET-1 efficacy and
potency were significantly decreased in the presence of LA, BH4, and LA and BH4 combination in the untreated
group, while it significantly increased in the presence of lead. In the second trial of experiments ET-1 efficacy
markedly decreased in BQ-123- incubated cells in both lead-treated and untreated aortic rings. In the presence
of lead, the efficacy of ET-1 was raised with the use of L-NAME. In conclusion, LA and BH4 can be considered
pharmacological agents to alter the potency of ET-1-induced vasoconstriction and concomitantly lower blood
pressure.

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Publication Date
Thu Jul 23 2020
Journal Name
مجلة العلوم النفسية
Influence of Model of Active Thinking in Achievement of Eighth Grade Students and their Visual Thinking in Science
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The aim of this study is to recognize the influence of model of active thinking in achievement ofeighth grade students andtheir visual thinking in science.The finds of this research show the superiority students of the experimental group who studied the science material by using the active thinking model on the students of the control group who studied by usual method, in the achievement test. Also the finds show that the students of the experimental group are more successful than students of control group in the test of visual thinking, so the two null hypotheses have been rejected. In light of the results of the research, numbers of recommendations were made.

Publication Date
Mon Aug 01 2016
Journal Name
Journal Of Economics And Administrative Sciences
The causal relationship between debt size and Economic value added With contrast of the Frim Size
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Abstract

       The research aims to identify  the  nature of  the relationship between the level of debt used  and economic  value  added  of companies listed on the Iraq Stock Exchange under the Contrast sizes of these companies , The research addressed the theoretical concepts associated with each of the debt financing , economic added value and Organization size With the use of financial techniques in the practical side to measure these variables, The research community Represent of  the shareholding companies listed on the Iraq Stock Exchange with a choice of intentionally sample of 24 joint stock companies representing&nbsp

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Publication Date
Tue Feb 05 2019
Journal Name
Journal Of The College Of Education For Women
Effectiveness of Woman's Personality between the Public and Private Event the Novel Feminist Iraqi 2003 - 2013
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After we completed this book search we must extraction most important the findings.
Event of war a majar impact on same as all human being but signed and its impact in the
psyche of iraqi woman unparalleled result of the suffering that were produced by these wars
that contributed to the destabilization of Her life at all levels a woman has lost her father,
husband and son an brother as well as extreme poverty caused by the economic blockade
brought in to existence wars that exacerbated the suffering was the woman to work and
economic in order to provide a living for her and her family and pre – empt the dreams and
ambitions so he excelled writer Iraqi in portraying the succession of wars that ate every thing
and

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Publication Date
Tue May 26 2026
Journal Name
Sciences Journal Of Physical Education
The relationship of explosive power and mechanical moments of rotation of the torso and the aiming arm Advanced Discus Throwers
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The discus throwing event is one of the complex events in athletics, and it is characterized by a performance method that depends on the principle of mechanical moments and requires high explosive capabilities of the thrower in addition to some physical specifications,which depends effectively and effectively on the biomechanical aspects in generating large moments during rotation. The importance of the research is highlighted by the interest in athletics, especially the effectiveness of the discus throw and the continuation of its development process, the importance of kinetic analysis in revealing the most important weaknesses and strengths of shooters, and the importance of explosive power And the moments generated in the rotation of the

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Publication Date
Fri Mar 15 2019
Journal Name
Journal Of Baghdad College Of Dentistry
The Dental Caries Experience in Relation to Salivary Flow Rate, SIgA and Mutans Streptococci Bacteria in Smoker and Non-Smoker Patients
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Background: Dental caries is a localized, progressive destructive, largely irreversible microbial based disease of multifactorial nature; these factors include (host, microbes and food) they influence differently on the initiation and progression of dental caries. The aims of the study: was to evaluate the effect of smoking on salivary flow rate, secretory immunoglobulin (SIgA) level and viable count of mutans streptococci (M.S) bacteria in oral cavity and their relation to dental caries experience. Material and method: The samples were collected from 80 male students ranging in ages from 18-22 years old. Where they divided in to two groups, 40 non-smokers (control group) and 40 smokers (study group). Unstimulated salivary samples were c

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Publication Date
Thu Jun 28 2018
Journal Name
Journal Of The College Of Education For Women
Meta – Recitation in the story of Hussein Rahim La'nat Al Hakawaty (storyteller's curse)
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This research was carried out to reveal the the technique of the recitation in this story including a preface, introduction, two chapters and the conclusion. the introduction consisted of the problem, significance , purpose and limitations of research. The preface included two paragraphs. The first included a meta-recitation of terminology and semantic. The second paragraph devoted to show the cultural identity of Hussein Rahim. The first chapter aimed to reveal the reality and the imaginary in the story of Na'lat Al Hakawaty (storyteller's curse). The second chapter aimed to study the strange arguments in the story. The research concluded the conclusion by presenting the results for attaching them with the margins, and the references

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Publication Date
Sun Jan 27 2019
Journal Name
Journal Of The College Of Education For Women
The Imaginary in Abu AL- Alaa AlMaari (Resalat Al- Kuffran) Message of Forgivness
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The )Resalat Al-Gofran) which means to Abi Ala Al-Ma'arri is included in the studies of prose in Arabic literature. The study of the "Message of Forgiveness" was passed in two stages. The first is the traditional linguistic study, specifically the rhetorical one. The second study, which took place in the sixties of the last century, was conducted in the light of comparative literary studies, after Dr. Taha Hussein summarized this letter and rid it of its complex language and after Dr. Bent Shati achieved it. Dr. Lewis Awad relied on her study in the light of comparative studies, Which appeared in Europe in the modern era and was able to discover similarities between them and the old texts that dealt with the subject of "literature of the

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Publication Date
Thu Aug 17 2023
Journal Name
المؤتمر العلمي الاول للمنظمات المجتمع
هدف التنمية المستدامة في القضاء على الفقر (العراق انموذجا)
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تعد التنمية المستدامة حق للكل البشرية وانها تهدف لتطوير المجتمعات البشرية من كافة النواحي وبشكل دائم وهي تهدف في القضاء على الفقر والجوع وهذه الظاهر ظاهرة منتشرة في العراق اذ ان المواطنين فيه يعشون في حالات تفرقة ودائما هم في حالات حروب اويعيشون في حصار اقتصادي او في اوقات كثيرة يعشون باوقات ازمات مما يجعلهم في فقر دوري ارض لتطبيق هدف التنمية المستدامة الذي ينص على القضاء على ،

Publication Date
Tue Jul 16 2024
Journal Name
مجلة دراسات المرأة
" الأمن البيئي ودور المرأة في الحفاظ على الموارد الطبيعية
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يعد الأمن البيئي موضوعاً حيوياً لا سيما في العصر الحديث، حيث بدأت تحديات التغير المناخي تتدهور وبسرعة متزايدة. وتزداد أهمية هذا الموضوع مع تصاعد تلك التحديات، أذ يتعين على الجميع لا سيما النساء منهم المشاركة في الحفاظ على البيئة لضمان استدامتها للأجيال الحالية والمستقبلية. ويُعد الحفاظ على البيئة والموارد الطبيعية أمراً ضرورياً لضمان استدامة الكوكب ومستقبل الأجيال القادمة. وفي هذا السياق، يأتي دور المرأة

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Publication Date
Tue Apr 30 2024
Journal Name
مجلة دراسات دولية
العوامل المؤثرة على اتجاهات الناخبات في العراق دراسة ميدانية
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تهدف هذه الد ا رسة الى التعرف على السلوك التصويتي للمقترعات الع ا رقيات. والأسباب التي تدفعهن للمشاركة في عملية الاقت ا رع، والعوامل المؤثرة في خيا ا رتهن التصويتية والأسباب التي تجعلها تفضل اختيار الرجل أو اختيار ام أ ر ة ، وأخي ا رً مدى م ا رعاة اج ا رءات الاقت ا رع لظروف النساء واحتياجاتهن واهتماماتهن. اعتم دتالد ا رسة منهجاً وصفياً واستعان ت بطريقة المسح بالعينةاما الاداة الرئيسية فهي الاستمارة الاستبيانية.

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