حظيت السمية الخلوية للمستخلصات النباتية باهتمام كبير في السنوات الأخيرة لتقييم نشاطها ضد الأورام. تركز الوقاية الكيميائية من السرطان على السمية الخلوية للمستخلصات النباتية لتكون سامة تجاه خطوط الخلايا السرطانية دون أن تؤثر على الخلايا الطبيعية. الهدف من هذه الدراسة هو تقييم السمية الخلوية لمستخلصي الزنجبيل و أوراق الزيتون ومزيجهما بنسبة 1: 1 تجاه خطوط خلايا RD وتقدير فعالية هذه المسخلصات ضد الاجهاد التاكسدي بدلالة SOD و MDA. تم الحصول على المستخلصات الكحولية لكل من الزنجبيل وأوراق الزيتون بطريقة السوكسيلت. وحضر المستخلص الثالث بخلط كميات متساوية من مستخلص أوراق الزيتون والزنجبيل بنسبة 1: 1. تم تحضير اطباق من خطوط الخلايا RD وخطوط الخلايا الاعتيادية وتم اختبار تراكيز مختلفة من المستخلصات المحضرة (12.5 - 800 ميكروغرام / مل) لتسجيل فعالياتهم تجاه كل من RD وخطوط الخلايا الطبيعية. . كذلك ، تم تقدير مستوى انزيم SOD و MDA اعتمادًا على طرائق العمل الخاصة بهما. اظهرت النتائج وجود فرق معنوي بين السمية الخلوية للتراكيز المدروسة لكل مستخلص تجاه خطوط الخلايا RD، اذ انخفضت قابلية بقاء خطوط الخلايا RD مع زيادة تراكيز المستخلصات ، وفي نفس الوقت لم تؤثر تلك المستخلصات على خطوط الخلايا الطبيعية. كذلك بينت النتائج ازدياد مستويات SOD مع زيادة تركيز المستخلص على عكس مستويات MDA التي انخفضت مع زيادة تراكيز المستخلص. يمكن الاستنتاج بان نشاط المستخلصات المحضرة تجاه خطوط الخلايا RD دون التأثير على خطوط الخلايا الطبيعية يعزز مبادئ المنع الكيميائي للسرطان ، إلى جانب الخصائص المضادة للأكسدة التي يمكن أن تقلل من الإجهاد التأكسدي الذي يصاحب الخلايا السرطانية وتنشيط العوامل الطبيعية المضادة للاكسدة في جسم الانسان.
Background: Recent studies suggest that chronic periodontitis (CP) and type2 diabetes mellitus (T2DM) are bidirectionally associated. Analysis of saliva as a mirror of oral and systemic health could allow identification of α amylase (α-Am) and albumin (A1) antioxidant system markers to assist in the diagnosis and monitoring of both diseases. The present study aims at comparing the clinical periodontal parameters in chronic periodontitis patients with poorly or well controlled Type 2Diabetes Mellitus, salivary α-Am, A1, flow rate (FR) and pH then correlate between biochemical, physical and clinical periodontal parameters of each study and control groups. Materials and Methods: 80 males, with an age range of (35-50) years were divide
... Show MoreA design for a photovoltaic-thermal (PVT) assembly with a water-cooled heat sink was planned, constructed, and experimentally evaluated in the climatic conditions of the southern region of Iraq during the summertime. The water-cooled heat sink was applied to thermally manage the PV cells, in order to boost the electrical output of the PVT system. A set of temperature sensors was installed to monitor the water intake, exit, and cell temperatures. The climatic parameters including the wind velocity, atmospheric pressure, and solar irradiation were also monitored on a daily basis. The effects of solar irradiation on the average PV temperature, electrical power, and overall electrical-thermal efficiency were investigated. The findings i
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Objective(s): to Evaluation of Parents’ Knowledge about Nutritional Management of kids with Phenylketonuria; to Identify the association between parents’ Knowledge about nutritional management then their demographic variables of fathers, mothers (parents age, residence then socioeconomic position).
Methodology: A non-experimental project; was accompanied on parents of phenylketonuria kid in Baghdad town since the period 3 June to 5 October 2022. A Non-probability sample (convenience) of 35 PKU children and their parents (father and mother) was selected Purposively from the hospitals that are select for the study. A survey is built for the purpose of the educa
... Show MoreBackground: Dental implant surface technologies have been evolving rapidly to enhance a more rapid bone formation on their surface and improve implant therapy.Implant threads should be designed to increase surface contact areathat induced better stability. In addition, implant surface coating with Flaxseed was used to enhance bone formation at the bone-implant interface. Materials and methods: Ninety-six commercially pure titanium (CpTi) screws were implanted in rabbits' tibiae and divided into three groups as dual-threaded group, flaxseed-coated group and control group. All groups were evaluated mechanically, histologically and radiographically after each healing periods (2, 4, 6 and 8) weeks and the resulting data were statistically analy
... Show MoreSloped solar chimney system is a solar chimney power plant with a sloped collector. Practically, the sloped collector can function as a chimney, then the chimney height can be reduced and the construction cost would be reduced.The continuity, Naver-stockes, energy and radiation transfer equations have been solved and carried out by Fluent software. The governing equations are solved for incompressible, 3-D, steady, turbulent standard model with Boussiuesq approximation to develop for the sloped solar chimney system in this study and evaluate the performance of solar chimney power plant in Baghdad city of Iraq numerically by Fluent (14) software with orking conditions such as solar radiation intensity (30
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