An evaluation of 605 endoscopic examination in a rural setting, Lacor Hospital in Northern Uganda

Introduction: The aim of this study was to evaluate the profile of esophagogastroduodenal (EGDS) diseases diagnosed by upper endoscopy in a rural area of Uganda in a retro-protective study of 605 patients. Results: The mean age of patients with digestive symptoms was 39.7yrs (SD +/-16.11) and female gender predominated by 60% compared to the male (P value 0.000). Peasant farmers were the commonest group with GI symptoms requiring EGDS compared to the rest 72.1% v 27.9%. Epigastric pain was the commonest indication (58%) for EGDS, followed by chest pain (11%), abdominal pain (8.8%), dyspahgia (7.6%) and hematemesis (7.3%). The commonest endoscopy finding was gastritis (47.9%) followed by esophagitis (14.4%), cancer esophagus (5.1%), esophageal varicose (4%), PUD (2.3%), gastric cancer (1%). However 19.5% of patients had normal EGDS. There was a significant correlation between the outpatient diagnosis and endoscopy finding (P value 0.01, r = 0.144) and between endoscopy finding and histology findings (P value 0.001, r = 0.236). H. pylori was positive in 53% of patients with gastritis. Conclusion: Gastritis is the commonest lesion (47.9%) of which 53% have H pylori and Cance

Changes in health-related quality of life in older patients with acute myocardial infarction or congestive heart failure: a prospective study

OBJECTIVES: To study changes in health-related quality of life (HR-QL) following acute myocardial infarction (AMI) or congestive heart failure (CHF) in older people (greater than or equal to 57 yr).DESIGN: Prospective cohort Study.SETTING: Primary healthcare registers.PARTICIPANTS: Patients were enrolled on the basis of primary healthcare records. Eighty-nine AMI patients (mean age = 69.5) and 119 CHF patients (mean age = 74.5) were included for analysis.MEASUREMENTS: HR-QL was conceptualized and measured by means of physical (activities of daily living (ADL), instrumental activities of daily living (IADL)), psychological (depressive symptoms, anxiety), social, and role functioning. Premorbid data (TO) were available from a 1993 community-based survey. Incident AMI and CHF cases, developed after 1993, were prospectively followed for 12 months. Assessments were performed at 6 weeks (T1) and 6 (T2) and 12 months (T3) after diagnosis.RESULTS: At the premorbid assessment, AMI patients did not significantly differ on HR-QL from a reference group of older people, whereas CHF patients were on average older and had worse HR-QL compared to the reference group. Although CHF had not yet been diagnosed at TO, symptoms were already present and resulted in decreased levels of functioning. At T1, all HR-QL measures showed worse functioning compared with TO, except for depressive symptoms that presented later (at T2). In contrast to the delay in depressive symptoms, a significant increase in anxiety was already seen at T1. The effect of the somatic conditions was the largest on physical functioning. Effects on psychological and social functioning were less pronounced but still significant. Effects were maintained during the 12 months of follow-up.CONCLUSION: The negative consequences on HR-QL in both AMI and CHF patients are not temporary. No recovery of function was seen in AMI patients, and functioning and CHF patients continued to decline in the first year after diagnosis

Performance and economic consideration of broiler chickens fed enzyme supplemented cassava fibre meal

The search for alternative energy source to substitute for the expensive conventional energy feed resources in broiler chicken diet is the driving force of this study. Thus, the study assessed the performance and economics of the production of broiler chickens fed enzyme supplemented cassava fibre meal (CFM) in a 56-day feeding trial. A batch of three hundred and sixty (360) day-old Arbor acre broiler-chicks was allotted to twelve (12) diets replicated five (5) times of six (6) birds in a complete randomization. Cassava fibre was sun dried for 5 days with constant turning to prevent fermentation, reduce the moisture content and possibly reduce the cyanide content. Proximate composition, phytochemical components and cyanide contents were determined using appropriate standard methods. Cassava fibre meal was substituted for maize at 0, 20, 40, and 60% levels and Roxazyme® G2 supplementation was at 0, 100 and 200 mg/kg. Data collected on feed intake and weight gain were analysed using the General Linear Model (GLM), and differences in means where observed were separated using Duncan option of the SPSS 2006 version 15.0. The Economics of broiler chicken production was determined using economic tools such as gross margin and economic efficiency analyses. Results showed that CFM contained appreciable levels of nutrients that could promote broiler growth when substituted at optimum level as an energy source in broiler chicken diet. Substitution of CFM at 40 and 60% levels for maize led to a decrease (p<0.05) in weight gain and feed conversion of broiler chickens. Feed intake and weight gain were not influenced by dietary substitution of CFM for maize in the broiler starter and broiler finisher stages of growth. The effect of enzyme supplementation was not significant in the birds’ physiological growth at both starter and finisher stages. The effect of interaction was not significant (p>0.05) indicating that birds’ performance were not dependent on the two factors under investigation. Economics of broiler chicken production revealed that total cost was lower in birds fed CFM with or without enzyme supplementation compared with those fed the maizebased diets. Net revenue, economic efficiency and profitability ratio analysis showed better economic viability and profitability in birds fed CFM with or without enzyme supplementation compared with those fed maize-based diets

Periodontitis-induced systemic inflammation exacerbates atherosclerosis partly via endothelial-mesenchymal transition in mice.

Growing evidence suggests close associations between periodontitis and atherosclerosis. To further understand the pathological relationships of these associations, we developed periodontitis with ligature placement around maxillary molars or ligature placement in conjunction with Porphyromonas gingivalis lipopolysaccharide injection at the ligature sites (ligature/P.g. LPS) in Apolipoprotein E knock out mice and studied the atherogenesis process in these animals. The mice were fed with high fat diet for 11 weeks and sacrificed for analyzing periodontitis, systemic inflammation, and atherosclerosis. Controls did not develop periodontitis or systemic inflammation and had minimal lipid deposition in the aortas, but mice receiving ligature or ligature/P.g. LPS showed severe periodontitis, systemic inflammation, and aortic plaque formation. The aortic plaque contained abundant macrophages and cells expressing both endothelial and mesenchymal cell markers. The severity of periodontitis was slightly higher in mice receiving ligature/P.g. LPS than ligature alone, and the magnitude of systemic inflammation and aortic plaque formation were also notably greater in the mice with ligature/P.g. LPS. These observations indicate that the development of atherosclerosis is due to systemic inflammation caused by severe periodontitis. In vitro, P.g. LPS enhanced the secretion of pro-inflammatory cytokines from macrophages and increased the adhesion of monocytes to endothelial cells by upregulating the expression of adhesion molecules from endothelial cells. Moreover, secretory proteins, such as TNF-α, from macrophages induced endothelial-mesenchymal transitions of the endothelial cells. Taken together, systemic inflammation induced by severe periodontitis might exacerbate atherosclerosis via, in part, causing aberrant functions of vascular endothelial cells and the activation of macrophages in mice

A comparison of a statistical-mechanics based plasticity model with discrete dislocation plasticity calculations

A two-dimensional nonlocal version of continuum crystal plasticity theory is proposed, which is based on a statistical-mechanics description of the collective behavior of dislocations coupled to standard small-strain crystal continuum kinematics for single slip. It involves a set of transport equations for the total dislocation density field and for the net-Burgers vector density field, which include a slip system back stress associated to the gradient of the net-Burgers vector density. The theory is applied to the problem of shearing of a two-dimensional composite material with elastic reinforcements in a crystalline matrix. The results are compared to those of discrete dislocation simulations of the same problem. The continuum theory is shown to be able to pick up the distinct dependence on the size of the reinforcing particles for one of the morphologies being studied. Also, its predictions are consistent with the discrete dislocation results during unloading, showing a pronounced Bauschinger effect. None of these features are captured by standard local plasticity theories. (C) 2003 Elsevier Ltd. All rights reserved

La Llei del silenci i el dret dels ciutadans i ciutadanes de Catalunya a Conèixer els resutlats de les mesures realitzades arran de l'accident a la C.N. de Txernòbil

La ponència exposa 1'experiència viscuda pel Grup de Científics i Tècnics Per un Futur No Nuclear en voler conèixer els resultats dels mesuraments duts a terme per les institucions universitàries catalanes per encàrrec de l'organisme de la Generalitat que té delegades aquestes funcions per part del Consejo de Seguridad Nuclear. Aquesta experiència és el fruit, d'una part, de l'interès propi del Grup i, d'una altra, de la tasca encarregada per una organització ecologista catalana al G.C.T.P.F.N.N

Effect of alloy type and surface conditioning on roughness and bond strength of metal brackets

The effect of 5 different surface conditioning methods on bonding of metal brackets to cast dental alloys was examined. The surface conditioning methods were fine (30-µm) or rough (125-µm) diamond bur, sandblasting (50-µm or 110-µm aluminum oxide [Al2O3]), and silica coating (30-µm silica). Fifty disc-shaped specimens of 5 different alloys (gold-silver, palladium-silver, nickel-chromium, cobaltchromium, and titanium) were ground with 1200-grit silicone carbide abrasive and polished before being reused for each conditioning method. Polished surfaces were used as negative controls. After measuring surface roughness (RZ), metal brackets were bonded to the conditioned alloys with a self-curing resin composite. Specimens were thermocycled (5000 times, 5°–55°C, 30 seconds), and shear bond tests were performed. Significantly higher (P .001) surface roughnesses were observed with use of the rough diamond bur (RZ ~33 µm), 110-µm Al2 O3 (RZ ~14 µm), and fine diamond bur (RZ ~10 µm), compared with the controls (RZ ~1 µm). Silica coating (RZ ~4 µm) and 50-µm Al2 O3 (RZ ~4 µm) demonstrated no significant difference (P > .001) in roughness when compared with the controls. The control group showed no resistance to shear forces (0 MPa). Bond values were greater (19 MPa) when silica coating was used, compared with 50-µm Al2O3 (7 MPa) and 110-µm Al2O3 (8 MPa) for all alloys tested. However, interaction between alloys and conditioning methods exhibited significant differences (P > .0001)