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Objective: The purpose of this study was to evaluate the effect of finish line design and cement space thickness on the marginal accuracy of monolithic zirconia crowns. Materials and methods: Thirty crowns were fabricated from translucent zirconia (inCoris TZI) using Cerec in-Lab system and divided into three main groups (10 each) according to the finish line type of the die (knife-edge, chamfer, and shoulder). Every group was divided into two subgroups (5 each) according to cement space thickness (20 and50µm). Optical impressions were taken for the dies using the Cerec scanner and cement space was set twice for every finish line design; 20 and 50 µm. The completed crowns were cemented to the dies and the marginal gap was evaluated. The collected data was statistically analyzed using Mann-Whitney U test and Kruskal-Wallis test and the significance level was set at P ≤ 0.05. Results: Regarding the marginal gap; there was no statistically significant difference between different finish line designs or between different cement space thicknesses. Conclusion: Neither finish line design nor cement space thickness has an effect on the marginal gap of inCoris TZI crowns. (AU)
Declaração do problema: A necessidade de um método minimamente invasivo de preparação de coroa única é inevitável, principalmente com dentes enfraquecidos e com alta probabilidade de irritação pulpar. Portanto, é necessária uma restauração durável e adaptada, com preparação menos invasiva da linha de término. Objetivo: O objetivo deste estudo foi avaliar o efeito do design da linha de término e da espessura do espaço de cimento na precisão marginal das coroas monolíticas de zircônia. Material e Métodos: Trinta coroas foram fabricadas a partir de zircônia translúcida (inCoris TZI) usando o sistema Cerec em laboratório, e divididas em três grupos principais (n = 10), de acordo com o tipo de linha de término da matriz (lâmina, chanfro e ombro). Cada grupo foi dividido em dois subgrupos (5 cada), de acordo com a espessura do espaço do cimento (20 e 50 µm). Impressões ópticas foram obtidas para as matrizes usando o scanner Cerec e o espaço de cimento foi definido duas vezes para cada projeto de linha de chegada: 20 e 50 µm. As coroas confeccionadas foram cimentadas nos moldes e a diferença marginal foi avaliada. Os dados coletados foram analisados estatisticamente pelo teste U de Mann-Whitney e Kruskal-Wallis e o nível de significância foi estabelecido em P ≤ 0,05. Resultados: Em relação ao gap marginal não houve diferença estatisticamente significante entre diferentes projetos de linha de acabamento ou entre diferentes espessuras de espaço de cimento. Conclusão: nem o design da linha de término, nem a espessura do espaço de cimento afetam a folga marginal das coroas inCoris TZI. (AU)
Subject(s)
Dental Marginal Adaptation , Tooth Crown , Dental CementsABSTRACT
Background: Proteus mirabilis is thought to contribute inrheumatoid arthritis (RA) development in susceptible individuals through molecular mimicry mechanism. This study was detecting the prevalence of asymptomatic bacteriuria (ABU) caused by Proteus mirabilis in RA patients to shed light on its rule in RA pathogenesis.Methods: This work has been conducted in medical Microbiology and Immunology Department and Rheumatology and Rehabitilation Department, Faculty of Medicine, Zagazig University, during the period from May 2017 to May 2018 over a period of 12 months. This study is a case control included 70 RA patients (66 females and 4 males), with age ranged from 25 to 65 years, and 70 healthy controls (67 females and 3 males), with age ranged from 24 to 65 years. Two consecutive urine samples one week interval were collected from each participant for urine count and culture. Blood samples were collected from each participant for detection the level of IgG antibodies against both Proteus mirabilis and E. coli (the most frequent isolated organism from the RA urine) by homely prepared ELISA. Results: The ABU was detected in (40%) of RA patients and in (4.3%) of healthy controls. The most common isolated organisms were E. coli (50%) followed by Proteus mirabilis (25%). A significant difference between both studied groups regarding IgG antibodies levels against Proteus mirabilis was detected (P< 0.001). No significant difference was observed between both studied groups regarding IgG antibodies levels against E. coli (P= 0.902). Significant positive correlation was found between Proteus mirabilis IgG antibodies levels and the levels of ESR and CRP in RA patients. In conclusion: Proteus mirabilis seems to have a role in RA development
Subject(s)
Arthritis, Rheumatoid , Bacteriuria , Cross Reactions , Egypt , Proteus mirabilisABSTRACT
To assess the antidiabetic effect of Opuntia dillenii seed oil on rats with diabetes mellitus. Methods: A rat diabetes model was established by intraperitoneal injection of rats with 50 mg/kg streptozotocin. Thirty albino Wistar rats were divided into five groups: the diabetic control group and normal control group were treated only with distilled water, two diabetic groups received 1 and 2 mL/kg of oil per day, respectively, for 30 days and one diabetic group received 2 mg/kg of glibenclamide. In addition, blood glucose was determined weekly. Body weight, average daily food, water intake and urinary volume of each animal were determined before and after the treatment period. After the treatment period, hepatic glycogen was determined using the anthrone reagent, and glycosuria, total cholesterol, triglycerides, alanine aminotransferase, aspartate aminotransferase, urea, creatinine and uric acid were estimated using common clinical diagnostic kits. Results: Oral intake of the oil at 1 and 2 mL/kg for the diabetic animals significantly diminished blood glucose, glycosuria, total cholesterol, triglycerides, alanine aminotransferase, aspartate aminotransferase, urea, creatinine and uric acid, accompanied by a noticeable elevation in the amount of hepatic glycogen in comparison with the diabetic control group. Similarly, Opuntia dillenii seed oil significantly increased the food intake and decreased the urinary volume per day in treated rats of the same groups in comparison with the period before the treatment intervention and attenuated body weight loss in the diabetic rats. Moreover, this effect of the oil was dose dependent. On the other hand, the oil did not affect their need for water. Conclusions: The results show that Opuntia dillenii seed oil has a very important antidiabetic effect on streptozotocin-induced diabetic rats. Hence, we suggest it as a preventive control of diabetes mellitus.
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Aims: Origanum majorana (Lamiaceae) is a herbaceous and perennial plant that is used in the Moroccan traditional medicine for treating gastrointestinal disorders. The objectives of this study were to confirm the antispasmodic and the myorelaxant activity of organic fractions of Origanum majorana (OM) in rat and rabbit jejunum. Place and Duration of Study: Laboratory of Physiology, Genetic and Ethnopharmacology, Faculty of Sciences, Mohamed the First University, between September 2013 and July 2014. Methodology: The antispasmodic and the myorelaxant test evaluated in vitro on rat and rabbit intestines mounted inside an isolated organ system with a temperature of 37ºC, pH 7.4 and continuous oxygenation Results: The screening study showed those organic fractions of OM decreased the tone of contraction induced by the Carbachol 10-6 M and the KCl 25 mM in the jejunum. The maximum decrease was obtained by dichloromethane fraction of Origanum majorana (DFOM). DFOM induced dose-dependent and reversible inhibition in intestine contraction of rabbit jejunum with IC50 = 0.162 ± 0.002 mg/ml without any alteration of this effect in the presence of adrenergic inhibitors. Pretreatment of the tissue with this fraction (0.01-0.3 mg/ml) induced a dose-dependent shift of the dose-response curve of Carbachol and CaCl2 to the right. The pharmacological inhibitors such as Atropine, L-NAME, Hexamethonium, Nifedipine and Methylene blue did not alter the relaxing effect of DFOM. Conclusion: The results study confirms the antispasmodic and the myorelaxant effect of OM extract. Also, the results showed that adrenergic receptors, NO, guanylate cyclase or muscarinic receptors pathways did not involve in relaxation induced by DFOM suggesting that it exerts an antispasmodic effect on intestinal smooth muscle like a non-competitive antagonist towards the voltage-dependent calcium channels.
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Objective: To investigate the hepatoprotective effect of Opuntia dillenii seed oil (ODSO) on CCl4 provoked liver injury in rat. Methods: Animals were treated orally with ODSO at a concentration of 2 mL/kg, once daily for one week before the first intraperitoneal injection of CCl4, and thereafter the administration of the oil was continued for 7 days until the introduction of the second injection of CCl4. Fourteen hours after the last dose of CCl4, rats were sacrificed, and the relative liver weight, weight gain, alkaline phosphatase, aspartate amino transferase, alanine aminotransferase, direct bilirubin, total bilirubin, triglycerides, total cholesterol, very low density lipoprotein, low density lipoprotein, high density lipoprotein, plasmatic glucose, urea, creatinine, acid uric and malondialdehyde were determined. Results: The significant increase was found in relative liver weight and plasma levels of alanine aminotransferase, aspartate amino transferase, alkaline phosphatase, total bilirubin, direct bilirubin, triglycerides, very low-density lipoprotein, urea, uric acid and malondialdehyde. Likewise, the significant decrease was indicated in the weight gain and the level of glucose plasmatic, and high-density lipoprotein levels in CCl4 produced liver injury in rats were re-established to normal levels when treated with ODSO.While, no change was observed in the total cholesterol, low-density lipoprotein and creatinine in all animals. Conclusions: We conclude that the ODSO has a protective effect on CCl4-mediated liver injury. Hence, we suggest its inclusion as a preventive control of liver disorders.
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OBJECTIVE@#To evaluate the in vitro antioxidant power of cactus pear seed oil [Opuntia ficus-indica L. MILL. (CPSO)] and its protective effect against chemically induced diabetes mellitus in mice.@*METHODS@#The in vitro antioxidant effect of CPSO was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assay. The preventive effect was conducted on Swiss albino mice treated with CPSO (2 mL/kg, per os), before and after a single intraperitoneal alloxan administration (100 mg/kg). Survival rate, body weight and fasting blood glucose were measured and histopathological analysis of pancreas was performed to evaluate alloxan-induced tissue injuries.@*RESULTS@#CPSO exhibited an antioxidant effect in DPPH scavenging assay. Moreover, the administration of CPSO (2 mL/kg) significantly attenuated alloxan-induced death and hyperglycemia (P < 0.001) in treated mice. Morphometric study of pancreas revealed that CPSO significantly protected islets of langerhans against alloxan induced-tissue alterations.@*CONCLUSIONS@#Based on theses results, CPSO can prevente alloxan-induced-diabetes by quenching free radicals produced by alloxan and inhibiting tissue injuries in pancreatic β-cells.
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Objective: To evaluate the in vitro antioxidant power of cactus pear seed oil [. Opuntia ficus-indica L. MILL. (CPSO)] and its protective effect against chemically induced diabetes mellitus in mice. Methods: The in vitro antioxidant effect of CPSO was evaluated using 2,2-diphenyl-1-picrylhydrazyl (DPPH) scavenging assay. The preventive effect was conducted on Swiss albino mice treated with CPSO (2 mL/kg, per os), before and after a single intraperitoneal alloxan administration (100 mg/kg). Survival rate, body weight and fasting blood glucose were measured and histopathological analysis of pancreas was performed to evaluate alloxan-induced tissue injuries. Results: CPSO exhibited an antioxidant effect in DPPH scavenging assay. Moreover, the administration of CPSO (2 mL/kg) significantly attenuated alloxan-induced death and hyperglycemia (P < 0.001) in treated mice. Morphometric study of pancreas revealed that CPSO significantly protected islets of langerhans against alloxan induced-tissue alterations. Conclusions: Based on theses results, CPSO can prevente alloxan-induced-diabetes by quenching free radicals produced by alloxan and inhibiting tissue injuries in pancreatic β-cells.
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The effects of aqueous extract of Anthemis mauritiana Maire & Sennen flowers (AM) on rabbit and rat jejunum were studied. The AM (0.1-3 mg/mL) showed reversibly relaxation of spontaneous contractions on isolated rabbit jejunal smooth muscle The spasmolytic effect was dose-dependent with IC50 value of 1,48 ± 0,02 mg/ml. Similarly this extract inhibited the contractions of rat jejunum induced by KCl (75mM) and Carbachol (CCh, 10-6M) with IC50 values of 0,48 ± 0,09 mg/ml and 1,53 ± 0,03 mg/ml respectively. Furthermore, AM exhibited an inhibitory effect on the dose-response curves induced by CCh and CaCl2 on rat jejunum. These results clearly demonstrated the antispasmodic effect of AM which was strongly suggested to be mainly due to the inhibitory effect on Ca++ influx through membrane of jejunal smooth muscle.
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Mechanical ventilation refers to the use of life support technology to perform the work of breathing for patients who are unable to breathe effectively on their own. Patients requiring mechanical ventilation include: critically ill patients with advanced and potentially reversible respiratory failure due to pulmonary or non-pulmonary processes, patients who are only temporarily unable to ventilate adequately on their own following general anesthesia, and patients who have chronic respiratory or neuromuscular disorders that may prevent them from breathing effectively without mechanical support. Weaning from mechanical ventilation generally refers to the progressive reduction in mechanical support that is delivered to patients as they progressively increase their own contributions to breathing. The aim of the study is to assess nurses' performance in providing care to patients undergoing weaning from mechanical ventilation in Suez canal university hospital. To answer the question; what are the most common area of satisfactory and area of negletion in nurses' performance in providing care to patients undergoing weaning from mechanical ventilation? The sample comprised 50 nurses working in intensive care units and intensive cardiothoracic units [N =2wards] at Ismailia university hospital.. 31 nurses from the intensive care units, 19 nurses from intensive cardiothoracic units at Ismailia university hospital. The tools for data collections were structured of questionnaire sheet and Observational checklist. The result show that un satisfactory performance between nurses in Ismailia university hospital. The study concluded that all nurses need to improve their performance during care of weaning from mechanical ventilation. The study recommended that they had satisfactory theoretical knowledge and clinical applications weaning from mechanical ventilation should be taught together, to facilitate learning continuous evaluation of nurse's knowledge and performance is essential to identify nurse's needs
Subject(s)
Humans , Female , Ventilator Weaning/nursing , Nurses , Hospitals, UniversityABSTRACT
Chest tube care is one of the most important nursing procedures because patients who need chest tubes are usually seriously ill and require advanced nursing care. Accordingly, vigilant and expert nursing care can prevent serious complications. The aim of the present study is to assess nurses' performance in providing care to patients undergoing chest tube. The study was a descriptive research design was used to conduct this study; a total number of 70 nurses were selected randomly using systematic sampling technique. Data were collected for a period of four months, using two tools: Tool [1] Questionnaire sheets to assess nurses, knowledge about care provided to patients undergoing chest tube. Tool [2]: Observational checklist to assess the nurses' practice in providing care to patients undergoing chest tube. The results of the present study revealed that unsatisfactory level of performance in providing care to patients undergoing chest tube among nurses in the sample. There was significant relation between nurses, knowledge, practice and degree of qualification. Also there was no correlation between nurses, knowledge and practice .The study recommended that improve nurses, theoretical knowledge and clinical applications of chest tube care and continuous evaluation of nurse's knowledge and performance is essential to identify nurse's needs
Subject(s)
Humans , Female , Patient Care/psychology , Chest Tubes/statistics & numerical data , Nurses/statistics & numerical data , Hospitals, University , Surveys and QuestionnairesABSTRACT
Clean laboratory bred albino mice were used. Three mice of these were used for testing the infectivity of eggs. Twenty four mice were sacrificed at 3 weeks and 3 months, 12 each time. Immunohistochemical study which is a combination of immunological and pathological changes was performed to determine the differential population of inflammatory cells in the reaction produced to T. canis infection in early and late stages