el hammi med ali - Academia.edu (original) (raw)

Papers by el hammi med ali

Background: Brucellosis is a significant health problem in Egypt.Methodology: To establish a PCR ... more Background: Brucellosis is a significant health problem in Egypt.Methodology: To establish a PCR technique for diagnosis of active brucellosis in our institutions, DNA extraction was done using a commercial kit, and a laboratory extraction procedure. PCR amplification was done using 2 sets of primers: B4/B5 and JPF/JPR. Extraction of Brucella DNA using the commercial kit failed; therefore, this technique was discontinued. The laboratory extraction method was successful and more economic.Results: The technique showed high sensitivity, specificity, and accuracy. The PCR positivity increased significantly (P=0.001) with increasing the positive standard tube agglutination titer and showed 100% positivity in patients with positive blood culture.Conclusions: An accurate and sensitive PCR technique was established. Based on the results, the PCR method is recommended as an alternative to culture for the diagnosis of brucellosis. A large-scale study to evaluate this PCR technique to screen for brucellosis in Egypt is needed.

LOCALISATION INTRACELLULAIRE DU GADOLINIUM DANS LA GLANDE MAMMAIRE EN LACTATION : ÉTUDE ULTRASTRU... more LOCALISATION INTRACELLULAIRE DU GADOLINIUM DANS LA GLANDE MAMMAIRE EN LACTATION : ÉTUDE ULTRASTRUCTURALE: Previous studies have focused on the localization of gadolinium in the intestine, the liver, the lung, the spleen, the bone morrow… However, no study has been performed to localize this element in the lactating mammary gland. Gadolinium is widely used in medicine (nuclear magnetic resonance imaging) and in industry (manufacture of CD Rom, video players, etc...). In this work, subcellular localization of gadolinium has been studied using conventional transmission electron microscopy. After its parenteral administration to lactating female wistar rats, this element has been found in the lysosomes of the mammary glandular epithelial cells as very electron dense granulations. No deposits were observed within the lysosomes of cells from control rats. These granules correspond probably to an insoluble intralysosomal gadolinium phosphate salt as was shown for other elements such as gal...

The goal of this paper is to examine the issue of the semantic web and LO in ALS to assemble and ... more The goal of this paper is to examine the issue of the semantic web and LO in ALS to assemble and generate, from a repository of LO, a course adapted to the needs, according to goals and preferences of a given learner. This objective is a part of the current work we undertake in the project ALS-PL (Adaptive Learning Systems for the Programming Language). What interest us more particularly in this paper is the question of the LOs and the granularity of the contents for a reuse and an efficient search. We are also interested in the impact of the semantics by taking into account educational standards, in order to elaborate a semantic model of the Los, and therefore an educational semantic Web.

Neuro endocrinology letters

The purpose of this paper is to report on radiographic features of the cranial vault abnormalitie... more The purpose of this paper is to report on radiographic features of the cranial vault abnormalities frequently seen but not yet described in detail in patients with Klinefelter syndrome. Our studies comprised 72 patients with Klinefelter syndrome and 47,XXY karyotype. The majority of the patients were young between the ages of 16 to 28 years. Plain skull radiographs were taken in the frontal and lateral projections. Several abnormalities were observed on skull radiographs of the Klinefelter patients. The most frequent was a premature fusion of the coronal sutures that occurred in 54 of 62 younger patients. In 42 cases extensive calcifications of these sutures were observed. The calcified sutures were dense and widened. In 24 patients the inner table in the anterior part or the parietal bone displayed a marked disruption with thinning of the calvaria at this place. In the posterior part of the parietal bone in 21 patients the inner table was thickened and excessively dense. On frontal...

Journal of The Less Common Metals, 1978

High purity bismuth and Bi-Sb, Bi-Sn and Bi-Pb solid solutions were deformed by uniaxial compress... more High purity bismuth and Bi-Sb, Bi-Sn and Bi-Pb solid solutions were deformed by uniaxial compression and subsequently annealed for one hour. The annealing temperature was varied and changes in electrical resistivity, hardness and microstructure were followed. The decreases in resistivity and hardness after a single annealing are attributed to recrystallization, a hypothesis which is confirmed by microstructural observations. The recrystallization temperature, temperature range of recrystallization and estimated energy released increase with solute content and type (in the order Sb, Sn, Pb). The greater the deviation from the Hume-Rothery rules for substitutional solutions, the greater is the effect which solute addition appears to have on the recrystallization process.

Toxicological Sciences, 2013

International Symposium on Computers and Communications, 2009

This paper proposes an improvement to the IETF (Internet Engineering Task Force) standard intra-d... more This paper proposes an improvement to the IETF (Internet Engineering Task Force) standard intra-domain recovery mechanisms based on a combination of the existing IETF standards. The proposed mechanism defines a new fast recovery process that ensures efficient resource utilization. Since the IETF protection switching mechanism follows a pre-planned approach, i.e., it selects a backup path only once at the LSP

Rheumatology International, 2014

The aim of this study was to compare the epidemiology of rheumatoid arthritis (RA) in North Afric... more The aim of this study was to compare the epidemiology of rheumatoid arthritis (RA) in North Africa to that of Western countries. We have enrolled in a cross-sectional study all consecutive patients presenting with the diagnosis of RA according to the 1987 ACR criteria, and during a 5-month period, patients were included in 11 centers across northern Algeria. Demographics, clinical data, and health assessment questionnaires (HAQ) were collected for each patient. We have estimated means, standard deviations, and 95 % confidence intervals for all parameters. Of the 249 patients (213 females and 36 males) enrolled in the study, 10 (4 %) had juvenile onset of the disease. The mean age was 50.1 ± 14.5 years, and the mean duration of RA was 8.4 ± 7.8 years. In terms of comorbidities, 18.9 % of patients reported hypertension and 5.2 % had diabetes. The mean DAS28 at inclusion was 4.3 (95 % CI 4.1-4.5); 14.0 % were in remission (DAS28 ≤ 2.6). The mean HAQ score was 0.81 ± 0.82. Rheumatoid factor was positive in 78.5 % of cases, and anti-citrullinated protein/peptide antibodies, when measured, was positive in 69.0 % of cases. Seronegative patients were older and had a relatively less severe disease. For treatment, 89.7 % of patients were taking disease-modifying anti-rheumatic drugs and only 4 % were taking biologics (rituximab); 90.8 % of patients were taking glucocorticoids, and none of the patients satisfied the recommended calcium intake guidelines. RA in Algeria is more common in women. Compared to reports from Western countries, RA in Algeria appears to be less aggressive, with more dominant seronegative oligoarthritis forms. The remission rate is comparable to that of Western populations.

Middle East African Journal of Ophthalmology, 2012

To present the visual outcomes and ocular sequelae of victims of cluster bombs. This retrospectiv... more To present the visual outcomes and ocular sequelae of victims of cluster bombs. This retrospective, multicenter case series of ocular injury due to cluster bombs was conducted for 3 years after the war in South Lebanon (July 2006). Data were gathered from the reports to the Information Management System for Mine Action. There were 308 victims of clusters bombs; 36 individuals were killed, of which 2 received ocular lacerations and; 272 individuals were injured with 18 receiving ocular injury. These 18 surviving individuals were assessed by the authors. Ocular injury occurred in 6.5% (20/308) of cluster bomb victims. Trauma to multiple organs occurred in 12 of 18 cases (67%) with ocular injury. Ocular findings included corneal or scleral lacerations (16 eyes), corneal foreign bodies (9 eyes), corneal decompensation (2 eyes), ruptured cataract (6 eyes), and intravitreal foreign bodies (10 eyes). The corneas of one patient had extreme attenuation of the endothelium. Ocular injury occurred in 6.5% of cluster bomb victims and 67% of the patients with ocular injury sustained trauma to multiple organs. Visual morbidity in civilians is an additional reason for a global ban on the use of cluster bombs.

Neuro endocrinology …, 2007

Leptin regulates body weight by suppressing food intake and increasing energy expenditure. Altera... more Leptin regulates body weight by suppressing food intake and increasing energy expenditure. Alterations in thyroid hormone levels are also associated with changes in body weight but the effect of thyroid hormone deficiency on serum leptin in humans is unclear. The aim of this study was to measure leptin levels and to investigate their associations with thyroid hormones in 22 women with severe hypothyroidism after total thyroidectomy, and in a group of 22 healthy euthyroid control female subjects matched for age and body mass index (BMI). Their plasma leptin, free thyroxine, triiodothyronine and TSH were measured. Leptin levels in subjects and controls were (pg/mL) 18761.64+/-16973.96 and 18729.19+/-18014.05, respectively, p=0.9; leptin did not correlate with free thyroxine, triiodothyroinine and TSH: r=0.1039 and p=0.6453, r=0.0113 and p=0.9602, and r=-0.0525 and p=0.8165 for leptin and FT4, leptin and FT3, and leptin and TSH, respectively in subjects; r=-0.00056 and p=0.9980, r=0.248727 and p=0.2643, and r=-0.046919 and p=0.8357 for leptin and FT4, leptin and FT3, and leptin and TSH, respectively in controls. Leptin levels did not differ between subjects and controls and they did not correlate with thyroid hormones. Leptin levels are not influenced by hypothyroidism and do not correlate with thyroid hormones in euthyroid and hypothyroid women.

Journal of Rare Earths, 2012

Corrosion Engineering, Science and Technology, 2013

ABSTRACT New hybrid organic–inorganic coatings have been developed by reacting a mixture of 3-gly... more ABSTRACT New hybrid organic–inorganic coatings have been developed by reacting a mixture of 3-glycidoxypropyltrimethoxysilane (GPTMS) and tetraorthosilicate (TEOS) with 2–4% aminoethylaminopropyl-methylsiloxane dimethylsiloxane (APDMS) copolymer as a modifier. The sol–gel polymerisation of the inorganic components was achieved by base catalysation using NaOH. The resultant base coating (CGA) was further modified using two different corrosion inhibitors: Moly-white 101-ED and Hfucophos Zapp yielding coatings (CGA-M) and (CGA-Z) respectively. The corrosion resistant efficiency of these coatings for the protection of mild steel sheets in 3·5%NaCl electrolyte was assessed using AC and DC electrochemical methods, notably, electrochemical impedance spectroscopy (EIS) and DC polarisation scans. Based on the results, the order of corrosion protection of the above coatings was in the order: CGA-M>>CGA-Z>CGA.

Journal of cell …, 2003

Summary Respiratory tract infections caused by Bordetella pertussis are occasionally accompanied ... more Summary Respiratory tract infections caused by Bordetella pertussis are occasionally accompanied by severe neurologic disorders and encephalopathies. For these sequelae to occur the integrity of cerebral barriers needs to be compromised. The influence of ...

Microscopy …, 2011

The frequent use of some rare earths in the medical and industrial domains make us worry about th... more The frequent use of some rare earths in the medical and industrial domains make us worry about their intracellular behavior into the body. Reason for which we have investigated the subcellular localization of one of these elements, the samarium, in the mammary gland of lactating female wistar rats using two very sensitive methods of observation and microanalysis, the transmission electron microscopy and the secondary ion mass spectrometry. The ultrastructural study showed the presence of electron dense deposits in the lactating mammary glandular epithelial cell lysosomes of the samarium-treated rats, but no loaded lysosomes were observed in those of control rats. The microanalytical study allowed both the identification of the chemical species present in those deposits as samarium isotopes ((152) Sm(+)) and the cartography of its distribution. Our results confirm the previous ones showing that lysosomes of the glandular epithelial cells are the site of the intracellular concentration of foreign elements such as gallium. The intralysosomal deposits observed in the mammary glandular cells of the samarium-treated rats are similar in their form and density to those observed with the same element in other varieties of cells, such as liver, bone marrow, and spleen cells. Our ultrastructural and microanalytical results and those obtained in previous studies allow deducing that the intralysosomal deposits are very probably composed of an insoluble samarium phosphate salt.

Biological trace element research, 2008

The frequent use of some trace elements such as gadolinium and terbium in medicine and modern ind... more The frequent use of some trace elements such as gadolinium and terbium in medicine and modern industries make us worry about their behavior in the organism. In this work, we study the intracellular localization in the liver and in the intestinal mucosa of two ...

Tunisie médicale, 2005

La pathologie obstétricale est pourvoyeuse de lourdes complications mettant en jeu le pronostic v... more La pathologie obstétricale est pourvoyeuse de lourdes complications mettant en jeu le pronostic vital. Il s'agit d'une étude rétrospective sur une période de 4 ans et demi et portant sur 59 patientes transférées de service de gynécologie obstétrique « A » au service de réanimation. Le ...

Sudan Journal of …, 2010

(English) The growth and yield responses of three newly released cotton (G. hirsutum L.) varietie... more (English) The growth and yield responses of three newly released cotton (G. hirsutum L.) varieties to nitrogen fertilization were evaluated in a twoyear (2006-2007) field experiment at Gezira Research Station, Central Sudan. Three cotton varieties,(Hamid, ...