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Search Results: 1 - 10 of 347582 matches for " N. E. Mohamed "
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Mathematical Modelling and Simulation of β-Cell Mass, Insulin and Glucose Dynamics: Effect of Genetic Predisposition to Diabetes  [PDF]
Wiam Boutayeb, Mohamed E. N. Lamlili, Abdesslam Boutayeb, Mohamed Derouich
Journal of Biomedical Science and Engineering (JBiSE) , 2014, DOI: 10.4236/jbise.2014.76035
Abstract: Worldwide, diabetes is affecting 370 million people, causing nearly five million deaths and absorbing more than 471 billion USD per year. Mathematical models have been developed to simulate, analyse and understand the dynamics of β-cells, insulin and glucose. In this paper, we consider the effect of genetic predisposition to diabetes on dynamics of β-cells, glucose and insulin. We assume that the β-cell dynamics is governed by the differential equation: \"\". The model indicates different behaviours according to the presence or absence of genetic predisposition. In presence of predisposition (ε = 1), the model shows three equilibrium points: a stable physiological equilibrium point (G = 100, I = 20, β = 600), a stable trivial pathological equilibrium point (G = 600, I = 0, β = 0) and a saddle point (G = 250, I = 9.8, β = 129.36). In absence of predisposition (ε = 0), the model has only two equilibrium points: an unstable pathological equilibrium point (G = 600, I = 0, β = 0) and a stable physiological equilibrium point (G = 82.6, I = 23, β = 900). In order to see how physical activity, obesity and other factors affect insulin sensitivity, simulations are carried out with different values of insulin induced glucose uptake rate (c), β-cell maximum insulin secretory rate (d) and environmental capacity (K).
Maternal and infant health in urban and rural areas in Morocco: Analysis of the preliminary results of the National Survey on Population and Family Health (EPSF 2011)  [PDF]
Abdesslam Boutayeb, Wiam Boutayeb, Mohamed E. N. Lamlili
Health (Health) , 2012, DOI: 10.4236/health.2012.48086
Abstract: Background: The last Moroccan population and family health survey (EPSF 2011) was carried out between November 2010 and March 2011. The final report and the whole database are not yet accessible while a preliminary report was released early March 2012. The information given so far does not allow for a complete evaluation of the present health situation in Morocco. However, a partial equity analysis can be devoted to the comparison of health indicators in terms of gender and urban-rural gaps. Method: 1) Questionnaires: a household questionnaire dealt with household characteristics, general health, housing condition and anthropometric data for children less than six years of age. A second questionnaire was devoted specifically to ever married women and dealt with their resources, marriage, reproductive health, family planning, AIDS/SIDA, healthcare and nutrition. 2) Data collection: data were collected through the national survey using a three-stage stratified sampling design to select 640 clusters covering the 16 Moroccan regions. A total of 15,577 households were randomly drawn, providing a sample of 75,061 individuals (51.1% females and 48.9% males) for investigation. 3) Analysis: in this short report, we relied only on partial data released by the Ministry of Health in a preliminary report. We used absolute differences and relative ratios to study the evolution of gender and urban-rural gaps on the basis of socioeconomic indicators. Results and Discussion: The Moroccan population seems to be in the last phase of its demographic transition. The total fertility rate decreased from 5.6 children per woman in 1980 to 2.5 in 2011. The mean age of first marriage went from 24 years for men and 17.5 years for women in 1960 to 31.5 years and 26.3 in 2011 for men and women respectively. The age structure is showing a trend of ageing population. Generally, health indicators related to reproductive and women’s health improved noticeably and consequently, maternal and infant mortality also decreased. However, while these achievements are praiseworthy as national averages, they remain insufficient in terms of equitable healthcare and access to health services since there is still a long way to go in order to reduce the huge gender gaps and rural-urban disparities. Conclusion: In this short report, we showed that, as averages, health indicators improved noticeably during the last decade but gender inequality and urban-rural disparities are still challenging health decision makers. Moroccan health decision makers are urged to adopt an equitable health strategy,
Estimation of direct and indirect cost of diabetes in Morocco  [PDF]
Wiam Boutayeb, Mohamed E. N. Lamlili, Abdesslam Boutayeb, Saber Boutayeb
Journal of Biomedical Science and Engineering (JBiSE) , 2013, DOI: 10.4236/jbise.2013.67090
Abstract:

Due to its chronic nature with severe complications, diabetes needs costly prolonged treatment and care. The high economic burden of diabetes is particularly threatening low and middle income countries. World-wide, studies have shown that the cost of diabetes per person is much higher than the per capita health expenditure. This study is the first to estimate the direct and indirect cost of diabetes in Morocco. The direct cost of diabetes was computed by assuming three scenarios of prices (low, medium and high) due to different prices of insulin, oral drugs and other items used in diabetes treatment and care. Indirect costs of diabetes were estimated by the lifetime forgone earnings caused by premature death and disability due to diabetes. The direct cost of diabetes in Morocco was estimated to be between US $0.47 and US $1.5 billion whereas the indirect cost was estimated to be around US $2 billion accounting for 57% of the total cost of diabetes under the high cost scenario, 69% under the medium scenario and 81% under the low cost scenario. The average per capita indirect cost was estimated to be US $1113, relatively higher than the direct cost of diabetes which was seen to vary from US$ 259 to US $830. The results yielded by this study were compared to those obtained by similar studies in different regions and countries of the world. As a conclusion, the findings of this study indicate a high economic burden of diabetes and stress the importance that Moroccan health decision makers should give to sensitisation, early diagnosis and treatment of diabetes especially with the crucial growing trend of diabetes prevalence.

Assessment of Endemic Goiter of Children in Eastern Sudan (Kassala State) Using Ultrasonography and ELISA  [PDF]
Shazaly N. Khojaly, Mohamed Yousef, Mohammed E. Mohamed, Ikhlas A. Hassan, Mogahid M. A. Zidan, Auis Bashir, Magdi Hassan
Open Journal of Medical Imaging (OJMI) , 2018, DOI: 10.4236/ojmi.2018.83004
Abstract: Thyroid gland is one of most important endocrine glands in the body. It plays vital role in growth control and its measurements tends to change in respect to age, sex, weight and ethnic group of the individual. This study aimed to assess endemic goiter and to estimate the measurement of normal thyroid gland dimensions and thyroid hormones level in school-aged children using Ultrasonography and ELISA Technique in Eastern Sudan (Kassala state). A total of 100 subjects is 6 - 18 years (43 males, 57 females), and mean of age (9.73 ± 2.54 years). This study was done in the period from April 2016 to February 2017. All the subject undergone thyroid ultrasound and thyroid hormone level test. Subjects with history of goiter were excluded from the study, by thyroid dimension (length, height and diameter). Thyroid volume was estimated using ellipsoid formula and thyroid hormones (TSH, T3 and T4) using Toso full automation.
The rise of diabetes prevalence in the Arab region  [PDF]
Abdesslam Boutayeb, Mohamed E. N. Lamlili, Wiam Boutayeb, Abdellatif Maamri, Abderrahim Ziyyat, Noureddine Ramdani
Open Journal of Epidemiology (OJEpi) , 2012, DOI: 10.4236/ojepi.2012.22009
Abstract: Introduction: Arab populations have many similarities and dissimilarities. They share culture, language and religion but they are also subject to economic, political and social differences. The purpose of this study is to understand the causes of the rising trend of diabetes prevalence in order to suggest efficient actions susceptible to reduce the burden of diabetes in the Arab world. Method: We use principal component analysis to illustrate similarities and differences between Arab countries according to four variables: 1) the prevalence of diabetes, 2) impaired glucose tolerance (IGT), 3) diabetes related deaths and 4) diabetes related expenditure per person. A linear regression is also used to study the correlation between human development index and diabetes prevalence. Results: Arab countries are mainly classified into three groups according to the diabetes comparative prevalence (high, medium and low) but other differences are seen in terms of diabetes-related mortality and diabetes related expenditure per person. We also investigate the correlation between the human development index (HDI) and diabetes comparative prevalence (R = 0.81). Conclusion: The alarming rising trend of diabetes prevalence in the Arab region constitutes a real challenge for heath decision makers. In order to alleviate the burden of diabetes, preventive strategies are needed, based essentially on sensitization for a more healthy diet with regular exercise but health authorities are also asked to provide populations with heath- care and early diagnosis to avoid the high burden caused by complications of diabetes.
Protozoosis caused by Vairimorpha necatrix (Microsporia, Nosematidae) in larvae of Spodoptera frugiperda (Lepidoptera, Noctuidae)
Patel, Prafulbala N.;Habib, Mohamed E. M.;
Revista Brasileira de Zoologia , 1988, DOI: 10.1590/S0101-81751988000400007
Abstract: vairimorpha necatrix was detected among laboratory cultured and field collected spodoptera frugiperda larvae. weak infections were not always fatal. in the case of fatal infections among diseased larvae, white patches were formed by agglomerations of adipose tissue beneath the transparent integument. the mid-gut of s. frugiperda larvae presented the first site of histological alterations caused by v. necatrix. the migration of the pathogen, probably occured in the form of agglomerations, from the epithelial cells to the body cavity. adipose tissue appears to be the principal site for the pathogen development. the nerve ganglia, muscle fibres and epidermis also presented histological alterations due to the pathogen propagation.
Synthesis, Characterization and Use of Schiff Bases as Fluorimetric Analytical Reagents
Mohamed N. Ibrahim,Salah E. A. Sharif
Journal of Chemistry , 2007, DOI: 10.1155/2007/191805
Abstract:
Pharmacognostical Studies of the Pericarp of Lagonychium farctum (Banks and Sol.) Bobr. Growing in Egypt
Ashraf N. E. Hamed,Mahmoud H. Mohamed
Journal of Pharmacognosy and Phytochemistry , 2013,
Abstract: Lagonychium farctum (Banks and Sol.) Bobr. is an erect prickly trees or shrubs. It belongs to family Leguminosae. It is used in traditional system of medicine as an astringent as well as anti-dysenteric. The present study investigates various standardized parameters such as macroscopic and microscopic characters which could be helpful in authentication of the pericarp of Lagonychium farctum. (Banks & Sol.) Bobr
Spatial and Temporal Variations of the Particulate Matter in Riyadh City, Saudi Arabia  [PDF]
Abdullah S. Modaihsh, Fahd N. Al-Barakah, Mahmoud E. A. Nadeem, Mohamed O. Mahjoub
Journal of Environmental Protection (JEP) , 2015, DOI: 10.4236/jep.2015.611113
Abstract: Mass concentrations of PM10 and PM2.5 for January 2012 up to October 2013 were measured at two sites; a suburban area, Riyadh airport (AP) and an urban area, King Fahd road district (KF) (densely trafficked site). Daily concentrations of both PM10 and PM2.5 measured at these two sites were highly variable. The temporal variation observed either for PM10 or PM2.5 was associated mainly with the dust events. The annual pattern of PM10 and PM2.5 at the AP station shows a significant increase in spring and summer (dusty seasons) where monthly mean concentrations of up to 696 μg·m-3 PM10 were recorded in March. PM10 concentrations during winter months are significantly lower, with 65 μg·m-3 measured in November and 78 μg·m-3 measured in December. January exhibits PM10 concentrations little above 100 μg·m-3. Both PM10 and PM2.5 showed substantial variations at these two monitoring stations during the study period. In the ur-ban station (King Fahd), average annual PM10 varied by up to roughly a factor of two. This variation implies that local emission sources in this site often contribute much (i.e. greater than half) of the PM10 mass on annual average. The variation of monthly (temporal) mean PM10 at KF station showed more or less similar results to the AP station. Higher concentrations were observed during spring and summer (12%, 17% and 13% in Feb., March and April respectively and 17, 15% during June and July). Starting from September and October, PM10 concentrations started to drop to 7% and 8% respectively. The relationships between the mean values of suspended particle concentrations and meteorological variables (relative humidity ambient temperature and wind speed) were analyzed. The results demonstrate that the influence of weather factors upon dust particulates is largely inconclusive. However, At KF station a moderate positive correlation was observed between wind speed and PM.
Evaluation of Deterioration and Proposed Restoration of the Limestone, White Monastery—Sohag, Egypt  [PDF]
Abd-Elkareem E. Ahmed, Ahmed O. Mashaly, Basel N. Shalaby, Mohamed A. Rashwan
Open Journal of Geology (OJG) , 2017, DOI: 10.4236/ojg.2017.79085
Abstract: By studying the phenomena of limestone built from the White Monastery in Sohag Governorate damage where this study discusses the results of the analyzes and the study’s petrographic limestone, we can study and discuss what has been done to analyze X-ray diffraction and X-ray flourecence, and by scanning electron microscope in order to determine the cause of the damage and to study the properties of limestone to choose the most appropriate treatment methods especially the internal structure affected by the environmental conditions surrounding the private and increasing ground water levels along with the use of the most appropriate ways to buffer water to conserve the limestone of the environmental factors that damage it.
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