285 results on '"Bennani B"'
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102. A Finite Element Algorithm for Microvoid Nucleation, Growth and Coalescence
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Bennani, B., primary, Picart, P., additional, and Oudin, J., additional
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- 1993
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103. Finite element simulation of void nucleation growth and coalescence in isotropic standard elasto-plasticity: application to cold forging
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Picart, P., primary, Oudin, J., additional, and Bennani, B., additional
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- 1992
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104. Anisotropic damage for crashworthiness of vehicles.
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Croix, P, Lauro, F, and Bennani, B
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- 2004
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105. Verification of the technical feasibility of composting: case study
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Edderkaoui Raounak, Khomsi Driss, Hamidi Ahmed, Bennani Baiti Hicham, Souidi Hanane, and Aqil Mohammed
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Environmental sciences ,GE1-350 - Abstract
The aim of this work is to verify the technical feasibility of composting in the case of Marrakech prefecture. On the basis of waste composition and in accordance with the choice of the installation of Marrakech controlled landfill, composting has been considered as the most suitable waste treatment. To ensure the feasibility of composting, physicochemical analyses have been carried out on the fermentable part of waste; analyses on the content of metal elements have also been performed on the fine fraction, since the most important part is located in the same fraction. All parameters determined in the laboratory, have shown that optimal conditions to have good quality compost have been respected. The only restriction identified is the copper content, which should be less than 20 ppm. Generally the low levels of metal element content indicate that the storage and collection conditions of waste have not influenced their quality. On the other hand, the process must be properly controlled and managed, to produce high-quality compost.
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- 2020
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106. Hajjeh Hilaneh: Stories from Palestine and Lebanon Afif Bulos Shirley Irving
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Bennani, B. M.
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- 1976
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107. Identification of the damage parameters for anisotropic materials by inverse technique: application to an aluminium
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Lauro, F., Bennani, B., Croix, P., and Oudin, J.
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- 2001
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108. Marketing, quelle place dans la gestion des coopératives au Maroc : Cas des coopératives de la région Tensift-Haouz
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BENNANI BOUCHRA
- Subjects
oopératives ,indh ,marketing ,maroc ,produits de terroir ,Management. Industrial management ,HD28-70 ,Marketing. Distribution of products ,HF5410-5417.5 - Abstract
Au Maroc, le secteur des coopératives est actuellement en plein essor; Il contribue activement au développement du pays et participe à la réalisation du grand projet sociétal que constitue l’Initiative nationale pour le développement humain (INDH).Cependant, les coopératives doivent relever le défi de la concurrence et continuer de participer au développement local et national.Elles essayaient certes, de commercialiser au mieux leurs offres sur le marché; mais elles se basent encore, sauf de rares cas, sur des techniques traditionnelles de valorisation et de commercialisation de leurs produits. Les coopérateurs sont ainsi en permanence menacés par l’exploitation des grossistes et des intermédiaires qui récoltent la majorité des bénéfices.L’objet de cette étude est d’analyser les pratiques managériales des coopératives au Maroc à travers l’étude du cas de quelques coopératives dans la région de Tensift Haouz.
- Published
- 2013
109. Time temperature equivalence for a mineral filled polymer for automotive applications
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Dorleans Vincent, Lauro Franck, Delille Rémi, Treutenaere Sylvain, Notta-Cuvier Delphine, Bennani Bruno, Haugou Grégory, Bourel Benjamin, Michau Eric, and Thoby Jean-David
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Physics ,QC1-999 - Abstract
Polymers are currently used in several industrial applications such as the interior components of the vehicle. We find them for example in the design of dashboards or door panels. These materials may be subjected to different types of load like the temperature variation or high strain rates due to crash impact. It is therefore necessary to well understand and to anticipate the complex mechanical behaviour of the polymers. This paper describes the results of experimental research about the dependence between the strain rate and the temperature. The main objective is to be able to model the complete variety of the behaviour in order to predict the risk of failure under dynamic loadings. The material chosen for this study is a copolymer propylene ethylene mineral (talc) filled 15% impact modified.
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- 2018
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110. Application of SEĖ method on a multiphase steel
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Lauro, F., david morin, Haugou, G., and Bennani, B.
111. Characterization of a structural adhesive by Digital Image Correlation
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david morin, Haugou, G., Bennani, B., and Lauro, F.
112. Preliminary phytochemical and antimicrobial investigations of extracts of Haloxylon scoparium
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Fatima LAMCHOURI, Benali, T., Bennani, B., Toufik, H., Ibn Majdoub Hassania, L., Bouachrine, M., and Lyoussi, B.
113. Characterization of the chemical and bacteriological risks of the effluents from some services of the Hassan II hospital Center in Fez
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El Mountassir, R., Bennani, B., Merzouki, H., Ghita Benjelloun Touimi, Boumchita, S., Benjelloun, Y., and Lahrichi, A.
114. Association des génotypes de vacA et de cagA de l’Helicobacter pyloriavec les lésions histologiques gastriques chez une population Marocaine
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El Khadir, M., Alaoui Boukhris, S., Khaldi, S., Benajah, D.-A., El Rhazi, K., Adil Ibrahimi, S., El Abkari, M., Chbani, L., Nejjari, C., Mahmoud, M., and Bennani, B.
- Abstract
L’infection à Helicobacter pylori(H. pylori) induit une inflammation de la muqueuse gastrique, qui peut évoluer vers des lésions précancéreuses conduisant au cancer de l’estomac. La détermination des éventuels facteurs de virulence de la bactérie liés aux lésions histologiques gastriques, notamment les différents génotypes de vacA et de cagA d’H. pylori, pourrait être utile pour la prédiction de l’évolution de l’infection vers le cancer gastrique. Ce travail vise alors à établir des corrélations entre les génotypes de vacA et de cagA d’H. pyloriavec lésions histologiques.
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- 2018
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115. Splinters of Bone
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Attar, Samar, primary, Darweesh, Mahmoud, additional, and Bennani, B. M., additional
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- 1976
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116. Damage characterization for particles filled semi-crystalline polymer
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Lauro Franck, Balieu Romain, Bennani Bruno, Haugou Gregory, Bourel Benjamin, Chaari Fahmi, Matsumoto Tsukatada, and Mottola and Ernesto
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Physics ,QC1-999 - Abstract
Damage evolution and characterization in semi-crystalline polymer filled with particles under various loadings is still a challenge. A specific damage characterization method using Digital Image Correlation is proposed for a wide range of strain rates considering tensile tests with hydraulic jacks as well as Hopkinson's bars. This damage measurement is obtained by using and adapting the SEE method [1] which was developed to characterize the behaviour laws at constant strain rates of polymeric materials in dynamic. To validate the characterization process, various damage measurement techniques are used under quasi-static conditions before to apply the procedure in dynamic. So, the well-known damage characterization by loss of stiffness technique under quasi-static loading is applied to a polypropylene. In addition, an in-situ tensile test, carried out in a microtomograph, is used to observe the cavitation phenomenon in real time. A good correlation is obtained between all these techniques and consequently the proposed technique is supposed suitable for measuring the ductile damage observed in semi-crystalline polymers under dynamic loading. By applying it to the semi-crystalline polymer at moderate and high speed loadings, the damage evolution is measured and it is observed that the damage evolution is not strain rate dependent but the failure strain on the contrary is strain rate dependent.
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- 2015
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117. Statut dupA de Helicobacter pylorichez des patients adultes marocains et corrélation aux pathologies gastriques
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Alaoui Boukhris, S., El Khadir, M., Benajah, D.A., El Rhazi, K., Ibrahimi, S.A., El Abkari, M., Chbani, L., Nejjari, C., Mahmoud, M., and Bennani, B.
- Abstract
L’infection à Helicobacter pylori(H. pylori) est l’une des infections bactériennes les plus répandues au monde. Cette bactérie oncogène est dotée de plusieurs facteurs de virulence dont les gènes vacA, cag Aet dupA. Les gènes vacAet cag Aont précédemment été caractérisés par notre équipe, tandis que le statut dupA reste encore mal connu dans notre région et au nord d’Afrique. L’objectif de cette étude est de déterminer le statut dupA des souches circulant dans notre région et d’établir une corrélation entre ce gène et les pathologies gastroduodénales diagnostiquées.
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- 2018
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118. Experimental procedure to characterize the mode I dynamic fracture toughness of advanced epoxy resins.
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Joudon, V., Portemont, G., Lauro, F., and Bennani, B.
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EPOXY resins , *FRACTURE toughness , *THERMOPLASTICS , *CINEMATOGRAPHY , *STRESS intensity factors (Fracture mechanics) , *BRITTLE fractures - Abstract
This research aimed at developing an experimental procedure to characterize the dynamic fracture toughness of a fast running crack in advanced epoxies enriched with thermoplastic particles and demonstrating quasi-brittle fracture. A strain gauge method was defined to determine the dynamic stress intensity factor KIDKID for the mode I crack opening with various crack speeds. This strain gauge measurement was associated with high speed cinematography on a three point bending test dedicated to the fracture of notched specimens made of the Hexply®M21 epoxy resin. Results demonstrate that the crack propagation speed has a large influence on the dynamic fracture toughness of advanced epoxy resins. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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119. Tailoring polylactide (PLA) properties for automotive applications: Effect of addition of designed additives on main mechanical properties.
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Notta-Cuvier, D., Odent, J., Delille, R., Murariu, M., Lauro, F., Raquez, J.M., Bennani, B., and Dubois, P.
- Subjects
- *
POLYLACTIC acid , *BIOPOLYMERS , *ADDITIVES , *MECHANICAL properties of polymers , *STIFFNESS (Mechanics) , *AUTOMOBILE industry - Abstract
Abstract: Among currently available bio-based polymers, poly(lactic acid) (PLA) has interesting physical and mechanical properties (high tensile strength and stiffness, good processability and biodegradability) but relatively low thermal stability, low toughness and is extremely brittle, all of which can be obstacles to industrial applications. The influence of several additives is investigated in this paper, the aim being to confer mechanical properties to PLA-based compositions suitable for potential use in automotive applications. Comparisons of their mechanical properties with those of a mineral filled polypropylene, as frequently used for automotive applications, show that PLA-plasticizer-impact modifier-nanoclay quaternary compositions represent interesting bio-based alternatives. [Copyright &y& Elsevier]
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- 2014
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120. Helicobacter pylori vacA Allelic Combination, dupA, cagE and cagA Genotypes and Their Associations with Gastric Diseases in the Moroccan Population.
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Zahir SO, El Khadir M, Boukhris SA, Benajah DA, Ibrahimi SA, Chbani L, El Abkari M, and Bennani B
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- Humans, Morocco epidemiology, Male, Female, Middle Aged, Adult, Aged, Virulence Factors genetics, Alleles, Young Adult, Stomach Diseases microbiology, Stomach Diseases epidemiology, Adolescent, Aged, 80 and over, Stomach Neoplasms microbiology, Helicobacter pylori genetics, Bacterial Proteins genetics, Antigens, Bacterial genetics, Helicobacter Infections microbiology, Helicobacter Infections epidemiology, Genotype
- Abstract
This study aimed to investigate the combination of the four regions of Helicobacter pylori vacA with cagA, cagE, dupA genes and cagA-EPIYA motifs to identify the most likely combination that could be used as a disease determinant marker in the Moroccan population. A total of 838 H. pylori-positive samples were obtained from consenting patients, that were previously analyzed by PCR to characterize vacA-s, -m, and -i regions; cagE status; and cagA 3' region polymorphism, were used to characterize vacA-d region and to determine dupA gene status. The analysis showed the predominance of the less virulent combination {vacA(s2m2i2d2)dupA(-)cagE(-)cagA(-)}, and showed that the risk of gastric cancer is 13.33 fold higher (95% confidence interval [CI] = 1.06-166.37) in patients infected with strains harboring vacA(s1m1i1d1)dupA(-)cagE(+)cagA(2EPIYA-C) compared to patients with gastritis without lesions and infected by H. pylori strains harboring vacA(s2m2i2d2)dupA(-) cagE(-)cagA(-). Infection with strains harboring the vacA(s1m1i1d1)dupA(+)cagE(+)cagA(1EPIYA-C) genotype combination represented a risk factor for both gastric ulcer and duodenal ulcer than gastritis without lesions; odds ratio (OR) =16 (95% CI = 1.09-234.24) and OR = 12.39 (95% CI = 1.09-140.81), respectively. These results suggest that the combination of the active form of vacA genotypes, dupA gene status, and the number of EPIYA-C motifs may be helpful markers for discriminating between several gastric diseases.
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- 2024
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121. Gastric cancer and associated pathogens: is there any association in Moroccan region?
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Boukhris SA, El Khadir M, Karim S, Souho T, Benajah DA, Ibrahimi SA, Chbani L, El Abkari M, and Bennani B
- Abstract
Helicobacter pylori, Epstein-Barr virus and human papillomavirus are three pathogens associated with various human cancers. This study aimed to investigate the role of these pathogens in gastric cancer in Moroccan population. For this, a retrospective study has been conducted on participants attending the gastroenterology department of Hassan II University Hospital of Fez. A total of 279 participants were enrolled. H. pylori, EBV and HPV were detected and genotyped by PCR. In results, a significant association has been established between H. pylori, EBV and gastric cancer. 93.4% and 43.3% of gastric cancer cases are related to H. pylori and EBV respectively (p≤0.01). H. pylori-EBV co-infection is responsible of 31.6% of gastric cancer cases (p<0.01). Correlation between pathogens genotypes and gastric cancer shows 54.6% of GC EBV positives are carrying the 30 bp deletion in LMP1gene, while 16% of gastric cancers cases are carrying high-risk genotypes of HPV (p=0.21). The obtained results highlight the possible role of co-infection in gastric cancer development.
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- 2024
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122. Pigmented medulloepithelioma of the optic nerve: A challenging diagnostic entity.
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El Mehdi T, Siham C, Imane K, Noufissa B, and Amal B
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- Male, Humans, Child, Preschool, Optic Nerve pathology, Ciliary Body pathology, Eye Enucleation, Neuroectodermal Tumors, Primitive pathology, Retinoblastoma pathology, Retinal Neoplasms pathology
- Abstract
Because of its rarity, the diagnosis of optic nerve medulloepithelioma poses a real diagnostic challenge. Medulloepithelioma is a congenital tumor that derives from the primitive medullary epithelium present in the neural tube and the optic vesicle. Its classical location is the ciliary body. Cases of retinal or optic nerve locations have been rarely reported in the literature. Only 11 cases have been published in the English literature. Herein, we report the case of a 2-year-old boy who underwent enucleation of the right eye for a presumed diagnosis of right-eye retinoblastoma, based on the presence of leukocoria on ophthalmological examination. Pathological examination showed an optic nerve medulloepithelioma. A review of the literature is also discussed in our work.
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- 2024
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123. Optimisation of Three Essential Oils against Salmonella spp. and Escherichia coli by Mixture Designa.
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Kachkoul R, Benjelloun Touimi G, Bennani B, El Mouhri G, El Habbani R, Zouhri A, El-Mernissi Y, and Lahrichi A
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- Escherichia coli, Anti-Bacterial Agents pharmacology, Salmonella, Microbial Sensitivity Tests, Oils, Volatile pharmacology, Rosmarinus
- Abstract
The aim of this work is to optimise the antibacterial activity of essential oils (EOs) from Eucalyptus camaldulensis (ECEO), Mentha pulegium (MPEO) and Rosmarinus officinalis (ROEO) plants against Salmonella spp. and Escherichia coli. The qualitative antimicrobial effect was assessed using the disc diffusion method, the broth microdilution method was used to determine the minimum inhibitory concentrations (MIC). Polynomial models were created using an augmented centroid simplex mixture design to highlight the synergy of EOs. The results show a significant antibacterial effect of ECEO and MPEO against both bacterial strains, with inhibition zones (IZs) of 13 and 12 mm respectively against E. coli, and 13 and 11 mm against Salmonella spp. The latter strain showed a MIC of 0.625 % (v : v) by the ECEO, while E. coli exhibited a MIC of 0.0781 % (v : v). The binary combinations of essential oils display a synergistic effect, the proportions of the optimum EOs in the mixture giving the lowest MIC
m were of the order of 50.51 % ECEO and 49.49 % ROEO against Salmonella spp. and around 50 % MPEO and 50 % ECEO against E. coli. These results indicate the effectiveness of binary combinations EOs against resistant bacterial strains and suggest their importance in bacterial infections treatment., (© 2023 Wiley-VHCA AG, Zurich, Switzerland.)- Published
- 2023
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124. Radiation-induced angiosarcoma of the breast: a case report.
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Rhoul C, Kharkhach A, Aabdi H, Atmani A, Mhand M, Seghrouchni N, Amal B, Bouhout T, Serji B, and El Harroudi T
- Abstract
Introduction: Breast angiosarcoma is a rare, aggressive tumour affecting adult women. It can occur in two forms, primary form and secondary forms or radiation-induced breast angiosarcoma affecting patients with history of breast or chest radiotherapy., Case Presentation: The authors report a new case of breast angiosarcoma in 52-year-old women, with history of invasive ductal carcinoma, and reporting a discoloration of her breast skin. The patient did undergo a mastectomy of right breast and adjuvant chemotherapy., Conclusion/discussion: Surgery with total excision associated or not to adjuvant chemotherapy remains the treatment of choice in breast angiosarcoma., Competing Interests: All authors have no conflict of interest to declare.Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article., (Copyright © 2023 The Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2023
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125. The prevalence and associated factors of depression, anxiety, and PTSD among Moroccan medical doctors in the COVID-19 pandemic: a national study.
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Ouazzani Housni Touhami Y, Maiouak M, Ouraghene A, Hammani Z, Abdi CMF, Benhammou I, Tahiri S, Rabhi S, Bennani B, Bout A, Aarab C, Boujraf S, El Fakir S, and Aalouane R
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- Female, Humans, Young Adult, Adult, Male, Prevalence, Cross-Sectional Studies, Depression epidemiology, Pandemics, Anxiety Disorders epidemiology, Anxiety epidemiology, Stress Disorders, Post-Traumatic epidemiology, COVID-19 epidemiology
- Abstract
COVID-19 pandemic is facing healthcare professionals with unprecedented challenges, which might alter their mental health. We targeted assessing depression, generalized anxiety, and post-traumatic stress disorder (PTSD) of Moroccan medical doctors during the COVID-19 pandemic; this would allow identifying the associated factors. A cross-sectional national study was carried out on 1267 exposed and unexposed public health medical doctors to COVID-19 patients. The study was conducted between May 15 and 15 June 2020. An anonymous self-administered questionnaire was completed online voluntarily and randomly. We used the Patient Health Questionnaire (PHQ-9), the Generalized Anxiety Disorder (GAD-7), and the PTSD Checklist for DSM‑5 (PCL-5) to assess depression, generalized anxiety, and PTSD, respectively. The respondents' rate was 63.3%. The mean age was 30.97 ± 6.65 years old, and 59.3% (N = 751) were females with a sex ratio M/F of 0.68. The sample included 43.0% (N = 545) of COVID-19 frontline doctors. Among all participants, 31.5% (N = 400) had depression, 29.2% (N = 370) had generalized anxiety, and 21.7% (N = 276) had PTSD. The average scores of the PHQ-9, the GAD-7, and the PCL-5 were 7.79 (± 5.54), 6.12 (±5.72), and 18.58 (±17.62), respectively. The multivariate logistic regression showed that working in primary and secondary hospitals, moderate and high-stress perceptions, a chronic physical illness, and a family history of psychiatric disorder were independently associated factors of depression, generalized anxiety, and PTSD. The females expressed significantly more anxiety. Doctors living in a family consisting of member with chronic disease showed a significantly higher risk of PTSD. The security sense of contamination risk and low threat perception of COVID-19 were significantly protective factors of depression, anxiety, and PTSD. Moroccan medical doctors are in psychological distress. It is essential to preserve medical doctors' mental well-being health for a better fight against the COVID-19 pandemic through effective and targeted health policies.
- Published
- 2023
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126. The high sensitivity and specificity of rapid urease test in diagnosis of Helicobacter pylori infection in Moroccan children.
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Hibaoui L, Massik A, Lebbar Z, Yahyaoui G, Mahmoud M, Bougnouch L, Hamass N, Chbani L, Bennani B, Berrahou MA, Idriss ML, and Hida M
- Abstract
Background and Objectives: Infesting nearly 50% of the world's population, Helicobacter pylori are thought to cause peptic ulcers, as well as gastric adenocarcinoma. Several diagnostic methods are available to detect this bacterium; however, at least two must be used together for an accurate diagnosis. This study evaluated the use of rapid urease test for diagnosis of H. pylori infection in a pediatric population., Materials and Methods: Five gastric biopsies were taken from children during a 2-year period for the purpose of histological, molecular, bacteriological culture, and rapid urease testing., Results: Among 83 children, 38 were male, and 45 were female with an age ranging of 2 to 15 years. The infected group represented 31%. The rapid urease test had a sensitivity of 88.5%, a negative predictive value of 94%, a specificity of 84.2%, and a positive predictive value of 72%., Conclusion: A rapid urease test may be appropriate for ruling out H. pylori infection after a negative result. The positive results however, may be confirmed by a second invasive test., (Copyright © 2022 The Authors. Published by Tehran University of Medical Sciences.)
- Published
- 2022
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127. Molecular and clinical assessment of maturity-onset diabetes of the young revealed low mutational rate in Moroccan families.
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Trhanint S, Bouguenouch L, Abourazzak S, El Ouahabi H, Latrech H, Benyakhlef S, Bennani B, El Bouchikhi I, Moufid FZ, Ouldim K, El Ghadraoui L, and Maazouzi N
- Abstract
Background: Maturity-onset diabetes of the young (MODY) is a monogenic form of diabetes characterized by autosomal dominant inheritance. To offer an adequate patient management and therapeutic treatment for MODY patients, in addition to an early efficient diagnosis of their asymptomatic relatives, it is crucial to set an accurate molecular diagnosis. Hence, our aim was to determine the frequency of HNF1A and GCK genes among Moroccan-suspected MODY patients., Methods: Twenty suspected MODY patients were screened for HNF1A and GCK mutations using Sanger sequencing and MLPA methods. Segregation analysis of identified mutations was performed among family members. The pathogenic nature of missense variants was predicted using bioinformatic tools., Results: A total of two mutations were revealed among all patients raising the diagnostic rate to 10%. We identified a large novel GCK deletion (c.209-?_1398+?del) by MLPA in one patient and a previously reported missense substitution (c.92G > A) in HNF1A gene., Conclusion: This is the first investigation to perform the molecular diagnosis of MODY suspected patients. Our findings constitute a primary contribution towards unraveling the genetic landscape involved in the pathogenesis of MODY disease in Morocco., Competing Interests: The authors declare no conflict of interest., (© 2021 Publishing services provided by Elsevier B.V. on behalf of King Faisal Specialist Hospital & Research Centre (General Organization), Saudi Arabia.)
- Published
- 2022
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128. Human cytomegalovirus and isocitrate dehydrogenase status in glioma: association and prognosis value in Moroccan population.
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Fall C, Faiz MCE, Hammass N, Fatemi HE, Hassouni K, Bouguenouch L, Fakir SE, and Bennani B
- Abstract
Introduction: Human cytomegalovirus (HCMV) and isocitrate dehydrogenase (IDH) have been separately associated to gliomas. IDH is a molecular marker considered in the histo-molecular classification of gliomas as well as in their management and prognosis. However, even if oncomodulatory properties were attributed to HCMV, its association to gliomas remains a controversy. Most of the studies that investigated this association used the histological classification of gliomas; nevertheless, in 2016, the World Health Organization recommended the introduction of molecular characteristics to refine this classification. The aims of this study were to determine the prevalence of HCMV in glioma patients, the association between HCMV and IDH with gliomas and subsequently their associations with survival of patients in a Moroccan cohort., Methods: A series of 102 gliomas and 32 controls were analyzed by nested PCR (nPCR) to determine the HCMV status. PCR and sequencing were used to determine the IDH subtypes in tumors samples. IDH mutation and HCMV status were correlated to the characteristics of the tumors using SPSS, whereas the survival curves were obtained by the Kaplan-Meier method and the log rank test., Results: HCMV shows significant association with gliomas with a detection rate of 30.4% and no case in the control group. The IDH mutation was identified in 40.9-50% of grade II-III gliomas and in 10.9% of grade IV gliomas. A significant association was obtained between survival in patients with glioblastomas and IDH/HCMV status. Glioblastoma patients with HCMV+ and IDHwt had a poor prognostic., Conclusions: HCMV was detected exclusively in tumor cases and was significantly associated with poor prognosis in patients with gliomas and particularly with glioblastomas. The worst overall survival was significantly seen in patients with gliomas HCMV+/IDHwt. So, it will be of interest to consider HCMV and IDH status in gliomas management strategies., Competing Interests: Conflicts of interest: All authors – none to declare., (GERMS.)
- Published
- 2022
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129. Bacterial sexually transmitted infections and syndromic approach: a study conducted on women at Moroccan University Hospital.
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Karim S, Bouchikhi C, Banani A, Fatemi HE, Souho T, Erraghay S, and Bennani B
- Abstract
Introduction: In Morocco, a syndromic approach has been implemented for sexually transmitted infections (STIs) management. However, those infections can be asymptomatic and the use of the syndromic approach to their management can be inappropriate and lead to dissemination of infection. Therefore, it would be important to determine the epidemiology and risk factors of bacterial STIs ( Neisseria gonorrhoeae (NG), Chlamydia trachomatis (CT) and Mycoplasma genitalium (MG)) in a Moroccan population and their association with symptoms to assess the appropriacy of the use of the syndromic approach., Methods: Cervical samples were collected from symptomatic and asymptomatic consenting women attending the University Hospital of Fez and were tested by PCR for NG, CT and MG using specific primers. We assessed the infection status and its association with different risk factors and genital STIs-related symptoms., Results: Of 809 tested for CT, NG and MG, 16.6% tested positive for at least one STI. Of the 134 participants who tested positive for at least one bacterial STI, 74.2% had no genital STIs-related symptoms. Moreover, the results showed a significantly high rate of NG and MG infections in asymptomatic women. However, the determined risk factors for NG, MG and CT infections were menopause (p=0.002), oral contraception (p=0.036) and a high number of parities (p=0.048), respectively., Conclusions: This investigation shows a predominance of NG infection and a high prevalence of STIs in asymptomatic patients. These results highlight that the adopted syndromic approach will not be adapted in the management of these STIs. Thus, the implementation of a systematic diagnostic program in order to enhance their management is needed., Competing Interests: Conflicts of interest: All authors – none to declare., (GERMS.)
- Published
- 2021
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130. The Synergistic Effect of Three Essential Oils against Bacteria Responsible for the Development of Lithiasis Infection: An Optimization by the Mixture Design.
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Kachkoul R, Benjelloun Touimi G, Bennani B, El Habbani R, El Mouhri G, Mohim M, Sqalli Houssaini T, Chebaibi M, Koulou A, and Lahrichi A
- Abstract
The present study aimed to determine the chemical composition and the synergistic effect of three plants' essential oils (EOs), Eucalyptus camaldulensis (ECEO), Mentha pulegium (MPEO), and Rosmarinus officinalis (ROEO), against three bacterial strains, Proteus mirabilis , Klebsiella pneumoniae , and Staphylococcus aureus , in order to increase the antimicrobial effectiveness by the use of a low dose of essential oils, consequently decreasing the toxicity and negative impact. For this reason, an augmented simplex-centroid mixture design was used to build polynomial models in order to highlight the synergy between the essential oils against bacterial strains. Antimicrobial effect screening was performed by the disc diffusion method and the minimal inhibitory concentrations (MIC) were also studied. The gas chromatography/mass spectrometry (GC-MS) results show the richness of these essential oils by terpenic compounds, especially 1,8-Cineole and P-Cymene for ECEO, Pulegone for MPEO, and α -Pinene and Camphene for ROEO. Moreover, a significant antibacterial effect has been demonstrated and the best values were revealed by MPEO and ECEO against P. mirabilis and K. pneumoniae, with inhibition zones (IZ) of 25 and 20 mm, respectively, and an MIC of 0.0391% (v:v) against K. pneumoniae . The optimal mixtures showed a synergistic effect of essential oils, and the lowest minimal inhibitory concentrations of the mixtures (MIC
m ) were in the order of 29.38% of MPEO, 45.37% of ECEO, and 25.25% of ROEO against P. mirabilis and in the order of 60.61% of MPEO and 39.39% of ROEO against K. pneumoniae . These results indicate the antibacterial efficacy of the three essential oils combined and suggest their importance in the treatment of urinary tract infections caused by resistant bacterial strains., Competing Interests: The authors declare that they have no conflicts of interest., (Copyright © 2021 Rabie Kachkoul et al.)- Published
- 2021
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131. CagE, cagA and cagA 3' region polymorphism of Helicobacter pylori and their association with the intra-gastric diseases in Moroccan population.
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El Khadir M, Boukhris SA, Zahir SO, Benajah DA, Ibrahimi SA, Chbani L, El Abkari M, and Bennani B
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- Adolescent, Adult, Aged, Aged, 80 and over, Female, Humans, Male, Middle Aged, Morocco epidemiology, Young Adult, Antigens, Bacterial genetics, Bacterial Proteins genetics, Helicobacter Infections epidemiology, Helicobacter Infections microbiology, Helicobacter pylori genetics
- Abstract
Helicobacter pylori infection is the most important etiological factor in gastroduodenal diseases development. Its evolution is influenced by several factors, including bacterial virulence genes such as cagA and cagE. This work aimed to evaluate the predictive value of cagE alone and in combination with cagA and CagA-EPIYA-C motifs number as a marker of the infection evolution. A total of 823 H. pylori DNA extracted from biopsies of consenting patients suffering from gastritis, peptic ulcer, or gastric cancer. The cagE, cagA status and cagA 3' region polymorphism were determined by PCR. The analysis shows that the risk of duodenal ulcer is 1.97-fold higher (CI = 1.18-3.30) in patients infected by strains cagA+/cagE+. And the risk of gastric cancer is 5.19-fold higher (CI = 1.18-22.70) in patients harboring strains cagE+/2EPIYA-C. The results suggest that cagE in combination with cagA-EPIYA-C motifs number can be used as predictive biomarker of H. pylori infection evolution., Competing Interests: Declaration of interest None, (Copyright © 2021 Elsevier Inc. All rights reserved.)
- Published
- 2021
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132. Spiro Heterocyclic Compounds as Potential Anti-Alzheimer Agents (Part 2): Their Metal Chelation Capacity, POM Analyses and DFT Studies.
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Hadda TB, Deniz FSS, Orhan IE, Zgou H, Rauf A, Mabkhot YN, Bennani B, Emam DR, Kheder NA, Asayari A, Muhsinah AB, and Maalik A
- Abstract
Background: One of the best methods to treat Alzheimer disease (AD) is through the effective use of cholinesterase inhibitors as vital drugs due to the identification of acetylcholine deficit in the AD patients., Objective: The present study aims the investigation of spiro heterocyclic compounds as potential AD agents supported by their metal chelation capacity, POM analyses and DFT studies, respectively., Methods: The cholinesterase inhibition and metal chelation ability were performed on ELISA microtiter assay. Whereas, the B3LYP method with 6-31+G(d,p) basis set was implemented to study HOMOLUMO energy calculations. The pharmacokinetic properties of the synthesized molecules were studied through Petra, Osiris and Molinspiration (POM)., Results: The six spiro (1-6) skeletons were tested for their inhibitory potential and metal-chelation capacity. Our findings revealed that the tested spiro skeletons exerted none or lower than 50% inhibition against both cholinesterases, while compound 4 proved to be the most active molecule with 57.21±0.89% of inhibition toward BChE. The spiro molecule 3 exhibited the highest metal-chelation capacity (9.12±5.26%). Molecular docking model for the most active molecule exhibited promising bindings with AChE and BChE's active site pertained to hydrophobic hydrogen bonds and positive ionizable interactions. The POM analyses gave the information about the flexibility at the site of coordination of spiro compounds (1-6)., Conclusion: The screening of spirocompounds (1-6) against cholinesterases revealed that some of them show considerable potential to inhibit AChE and BChE. Herein, we propose that the spiro molecules after further derivatization could serve interesting AD inhibitor drugs., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)
- Published
- 2021
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133. VacA genotypes and cagA-EPIYA-C motifs of Helicobacter pylori and gastric histopathological lesions.
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El Khadir M, Boukhris Alaoui S, Benajah DA, Ibrahimi SA, Chbani L, El Abkari M, and Bennani B
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- Adult, Age Factors, Aged, Biopsy, Female, Gastric Mucosa microbiology, Genotyping Techniques, Helicobacter Infections complications, Helicobacter pylori genetics, Humans, Male, Metaplasia, Middle Aged, Morocco, Polymorphism, Genetic, Sex Characteristics, Stomach Neoplasms microbiology, Tobacco Smoking adverse effects, Tobacco Smoking epidemiology, Antigens, Bacterial chemistry, Antigens, Bacterial genetics, Bacterial Proteins chemistry, Bacterial Proteins genetics, Gastric Mucosa pathology, Helicobacter Infections pathology, Helicobacter pylori pathogenicity, Stomach Neoplasms diagnosis
- Abstract
Helicobacter pylori infection induces inflammation of the gastric mucosa, which may progress to precancerous lesions and gastric cancer. The gastric histo-pathological damages may be associated with some virulence genes of the bacterium, notably vacA and cagA genes. To establish correlations between these genes and the lesions, biopsies from 1303 adults consenting patients that were previously analyzed by PCR to characterize vacA-s vacA-m, vacA-i regions and cagA 3' region polymorphism, were used. The highest average age was obtained in patients with intestinal metaplasia (53.65 ± 15.26 years) and gastric cancer (53.60 ± 14.32 years). Thus, these lesions are more frequent in elderly and male subjects. Tobacco smoking was significantly associated with neutrophilic activity (P = .02). No significant association was obtained between patients with chronic inflammation and vacA and cagA H. pylori genotypes. However, a significant association has been obtained between this lesion and cagA+ in aged patients (P = .02), while intestinal metaplasia was significantly associated with vacAi1 and vacAm1 separately (P < .01 and .01). Also, a significant association was obtained between intestinal metaplasia and strains with one EPIYA-C motif in young patients (P = .001). Interestingly, a significant association was obtained between gastric cancer and cagA+, vacAi1, vacAm1 H. pylori genotypes and also with two EPIYA-C motifs independently of age groups (all P < .05). The results of our study show that H. pylori vacAi1 could be more potent than the other H. pylori virulent factors for predicting the precancerous gastric lesions, confirming that this gene may be helpful to identify patients at high risk for gastric cancer., (© 2020 UICC.)
- Published
- 2020
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134. Molecular Serotyping and Antibiotic Resistance Patterns of Escherichia coli Isolated in Hospital Catering Service in Morocco.
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Ghita BT, Bennani L, Berrada S, Benboubker M, and Bennani B
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Escherichia coli is related to foodborne disease and outbreaks worldwide. It mainly affects persons at high risk as newborns, infants, and individuals with impaired immune system in hospitals. Multidrug-resistant E. coli is currently spreading both in community and hospital settings. Our study aims to evaluate the presence of E. coli and the incidence of its antibiotic resistance in samples obtained from various cooked and raw foods ( N = 300), food contact surfaces ( N = 238), and food handlers ( N = 40) in Moroccan hospital catering service. E. coli was identified using API 20E, and the antibiotic resistance patterns were obtained using the agar disk diffusion methods. However, PCR method was used for O157 and H7 typing. The samples analysis showed that 14.33%, 24.16%, and 45% of food, surfaces, and food handlers harbored E. coli , respectively, with the highest rates obtained in raw meats (34.88%) and salads (34.88%). Molecular amplification shows that 14 E. coli isolates carried the flagellar antigen H7, while there are no isolates showing amplification for O157. The high rate of resistance was noted against ampicillin (100%), amoxicillin-clavulanate acid (100%), nalidixic acid (61.62%), and cefotaxime (59.49%), and isolates obtained from food handler's hands showed the highest rates of resistance. None of the isolates are extended-spectrum beta-lactamases producing, while 27.7% of the isolates were metallo-beta-lactams producing. This first study conducted on Moroccan hospital catering services may draw the authorities' attention to the necessity of setting up a surveillance system to monitor the food preparation process and the safety of prepared food in healthcare settings., Competing Interests: The authors declare that they have no conflicts of interest regarding the publication of this paper., (Copyright © 2020 Benjelloun Touimi Ghita et al.)
- Published
- 2020
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135. Detection of Ureaplasma Biovars and Subtyping of Ureaplasma parvum among Women Referring to a University Hospital in Morocco.
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Karim S, Bouchikhi C, Banani A, Fatemi HEL, Souho T, Erraghay S, and Bennani B
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- Adolescent, Adult, Aged, Aged, 80 and over, Bacterial Typing Techniques, Cervix Uteri microbiology, DNA, Bacterial genetics, Female, Humans, Middle Aged, Morocco epidemiology, Pregnancy, Prevalence, Prospective Studies, Risk Factors, Serogroup, Ureaplasma pathogenicity, Young Adult, Hospitals, University statistics & numerical data, Ureaplasma classification, Ureaplasma genetics, Ureaplasma Infections epidemiology, Ureaplasma Infections microbiology
- Abstract
Objectives: The aim of this study was to determine the prevalence of Ureaplasma biovars and Ureaplasma parvum ( U. parvum ) serovars, their associated risk factors, and genital STI-related symptoms., Methods: DNA obtained from cervical samples of 1053 women attending the department of Obstetrics and Gynecology and the laboratory of pathological anatomy of Hassan II university hospital of Fez, Morocco, was used to detect Ureaplasma biovars ( U. urealyticum and U. parvum ) and to subtype U. parvum by polymerase chain reaction (PCR)., Results: Of the 1053 women examined, 25.4% (268/1053) were Ureaplasma positives. The rates of U. urealyticum and U. parvum were 12.1% (128/1053) and 7% (74/1053), respectively, and the copresence of these biovars was noted in 6.3% (66/1053) cases. The U. parvum subtyping revealed a predominance of the serovar 3/14 (61.4%). The association of demographics variables with Ureaplasma biovars was studied and shows that the age ("<30" years) seems to be a risk factor of Ureaplasma spp. and U. urealyticum carriage (OR 1.729, 95% CI [1.113-2.687] and OR 1.848, 95% CI [1.026-3.330], respectively). There was no difference in the prevalence of Ureaplasma type regarding symptoms. However, a significant association was found between U. parvum serovar 1 and infertility ( P = 0.011)., Conclusion: This first study conducted in Morocco provides an idea on Ureaplasma biovars and U. parvum serovars circulating in this region, their associated risk factors, and genital STI-related symptoms. Therefore, further studies are required to clarify and confirm the pathogenic role of these Ureaplasma species., Competing Interests: The authors declare that there are no conflicts of interest regarding the publication of this paper., (Copyright © 2020 Safae Karim et al.)
- Published
- 2020
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136. Evaluation of hygienic conditions of food contact surfaces in a hospital kitchen in Morocco.
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Touimi GB, Bennani L, Berrada S, Benboubker M, and Bennani B
- Abstract
Background and Objectives: Food in healthcare settings are complementary to medical treatment, hence it should be produced in good sanitary conditions. In fact, hospitalized and immune-compromised patients are more likely to have foodborne infections than the rest of the community. The aim of our study is to evaluate the microbiological quality of food contact surfaces in a hospital kitchen in Morocco., Materials and Methods: A total of 238 samples was collected from kitchen surfaces and analyzed for total aerobic mesophilic bacteria (AMC), Enterobacteriaceae and Staphylococcus aureus count and the presence of Salmonella spp., Pseudomonas spp. and Listeria monocytogenes., Results: The bacteriological analysis shows that the highest rates of compliance with good hygienic conditions were obtained in baking worktops (77%) and serving meal worktops (50%) and the vegetables cutting boards (45.83%). In contrary, some surfaces show a low level of compliance, such as the raw meat cutting boards (96%). The isolated bacteria were S. aureus , coagulase-negative staphylococci, Escherichia coli , Serratia marcescens , Serratia odorifera , Raoultela ornithiaolytica and Pseudomonas aeroguinosa ., Conclusion: The actual results indicate that the high levels of bacterial counts on kitchen surfaces, presents an evident need to improve the hygienic process and adopt an HACCP system in this facility., (Copyright© 2019 Iranian Neuroscience Society.)
- Published
- 2019
137. Cervical Cancer Induction Enhancement Potential of Chlamydia Trachomatis: A Systematic Review.
- Author
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Karim S, Souho T, Benlemlih M, and Bennani B
- Subjects
- Coinfection microbiology, Coinfection virology, Female, Humans, Papillomavirus Infections complications, Uterine Cervical Neoplasms virology, Chlamydia Infections complications, Chlamydia trachomatis pathogenicity, Uterine Cervical Neoplasms etiology, Uterine Cervical Neoplasms microbiology
- Abstract
Human papillomavirus (HPV) persistent infection is the necessary but not sufficient cause of cervical cancer. Other co-factors are required to induce cell transformation that will evolve to malignant cervical cancer. These co-factors include physical elements, other sexually transmitted infections, and immune response. Chlamydia trachomatis the most common bacterial sexually transmitted infection is often asymptomatic but causes various syndromes such as cervicitis, endometritis, pelvic inflammatory disease, and infertility. It is established that this bacterium is involved in cell proliferation process and inhibit apoptosis. Furthermore, C. trachomatis may induce chronic inflammation, interfere with immune response by decreasing the number of antigen presenting cells, and reduce the cell-mediated immunity allowing the persistence of HPV. However, it is unclear whether this bacterium plays a particular role in cervical cancer induction. We therefore aimed at enlightening the actual knowledge about the relationship between C. trachomatis and cervical cancer or precursor lesions through a systematic literature review. We summarized and analyzed the epidemiological data on C. trachomatis and its co-infection with HPV and their association to cervical cancer.
- Published
- 2018
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138. Helicobacter pylori CagA EPIYA-C motifs and gastric diseases in Moroccan patients.
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El Khadir M, Alaoui Boukhris S, Benajah DA, Ibrahimi SA, Chbani L, Bouguenouch L, El Rhazi K, El Abkari M, Nejjari C, Mahmoud M, and Bennani B
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Amino Acid Sequence, Antigens, Bacterial chemistry, Bacterial Proteins chemistry, Biopsy, Female, Gastritis diagnosis, Genetic Variation, Genotype, Helicobacter Infections diagnosis, Humans, Male, Middle Aged, Morocco epidemiology, Polymorphism, Genetic, Young Adult, Amino Acid Motifs, Antigens, Bacterial genetics, Bacterial Proteins genetics, Gastritis epidemiology, Gastritis microbiology, Helicobacter Infections epidemiology, Helicobacter Infections microbiology, Helicobacter pylori genetics
- Abstract
Background: The pathogenicity of cagA-positive H. pylori strains is associated with the number and type of repeated sequences named EPIYA located in the C-terminal region of the CagA protein. The aim of this study is to determine the polymorphism of the H. pylori cagA 3' region circulating in Morocco and its association with different gastric pathologies., Methods: A total of 1353 consenting patients, were recruited in this study. The gastric biopsies performed during endoscopy were used for histological examination and for molecular characterization of H. pylori. The study of the type and number of "EPIYA" motif was identified by PCR directly on H. pylori positive biopsies., Results: Of all the biopsies, the infection rate was 61.1%. The cagA gene was amplified in 68.9% of the cases and the analysis of the 3' region of cagA showed the exclusive presence of the "Western CagA" type with a predominance of the EPIYA-ABC motif (71.4%). The number of EPIYA-C motif varies from 0 to 2. The multinomial analysis shows that the infection with strains of H. pylori having two EPIYA-C motifs is a factor that increases the risk of developing gastric cancer compared to gastritis cases with strains lacking this motif (OR = 11.64; CI: 3.34-45.15), whereas this risk is 6 fold higher in comparison with duodenal ulcer cases (OR = 6, CI: 1.29-27.76)., Conclusions: The results of this study suggest that the number of EPIYA-C motifs might be useful as a predictive marker of the infection evolution and will help in the identification of patients at high risk of developing gastric cancer., (Copyright © 2018 Elsevier B.V. All rights reserved.)
- Published
- 2018
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139. Molecular Antimicrobial Resistance of Neisseria gonorrhoeae in a Moroccan Area.
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Karim S, Bouchikhi C, Banani A, El Fatemi H, Souho T, Erraghay S, and Bennani B
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- Adult, Aged, Female, Gonorrhea drug therapy, Gonorrhea microbiology, Humans, Microbial Sensitivity Tests, Middle Aged, Morocco epidemiology, Mutation, Neisseria gonorrhoeae enzymology, Penicillin Resistance genetics, Penicillins pharmacology, Plasmids genetics, Polymerase Chain Reaction, Prevalence, R Factors genetics, Tetracycline Resistance genetics, Young Adult, beta-Lactamases genetics, Anti-Bacterial Agents pharmacology, Drug Resistance, Bacterial genetics, Neisseria gonorrhoeae drug effects, Neisseria gonorrhoeae genetics
- Abstract
Objectives: To identify the prevalence and the types of Neisseria gonorrhoeae (NG) resistance plasmids-mediated penicillin (PPNG) and tetracycline (TRNG), the ciprofloxacin resistance (CRNG), and related risk factors of each types of resistance., Methods: The beta-lactamase-producing plasmid types (Africa, Asia, and Toronto), tetM tetracycline resistance plasmid types (America and Dutch), and the determination of the Ser-91 mutation of GyrA were detected by specifics PCRs on 149 diagnosed NG positives samples followed by Hinf1 digestion for tetM and gyrA mutation., Results: 135 (90.1%) samples showed a profile of molecular resistance to at least one antibiotic with predominance of ciprofloxacin resistance. In fact, 36 (24.2%) and 69 (46.3%) cases harbored PPNG and TRNG, respectively, and 116 (77.9%) cases showed the mutation Ser-91 of GyrA (CRNG). From a total of 36 PPNG isolates, the Toronto, Asian, and Toronto/Asian types were detected in 13 (36.1%), 10 (27.8%), and 13 (36.1%) cases, respectively, whereas the African type was not detected. In addition, the American type of TRNG was detected in 92.8% (64/69) of cases, while the Dutch type was detected in 7.2% (5/69) of cases. The association of demographics and clinical variables with NG resistance to ciprofloxacin, penicillin, and tetracycline was studied and the risk factors have been determined., Conclusion: Resistance to penicillin, tetracycline, and ciprofloxacin among NG samples positives remained at high levels in Morocco as determined by molecular profile. So, the use of molecular tools for NG antimicrobial resistance detection can help in the management and spread limitation of this infection.
- Published
- 2018
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140. A three-dimensional geometric quantification of human cortical canals using an innovative method with micro-computed tomographic data.
- Author
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Roothaer X, Delille R, Morvan H, Bennani B, Markiewicz E, and Fontaine C
- Subjects
- Cortical Bone anatomy & histology, Cortical Bone diagnostic imaging, Femur diagnostic imaging, Humans, Humerus diagnostic imaging, Image Processing, Computer-Assisted methods, Male, Porosity, Stress, Mechanical, Cortical Bone ultrastructure, Femur anatomy & histology, Humerus anatomy & histology, Imaging, Three-Dimensional methods, X-Ray Microtomography methods
- Abstract
The complex architecture of bone has been investigated for several decades. Some pioneer works proved an existing link between microstructure and external mechanical loading applied on bone. Due to sinuous network of canals and limitations of experimental acquisition technique, there has been little quantitative analysis of three-dimensional description of cortical network. The aim of this study is to provide an algorithmic process, using Python 3.5, in order to identify 3D geometrical characteristics of voids considered as canals. This script is based on micro-computed tomographic slices of two bone samples harvested from the humerus and femur of male cadaveric subject. Slice images are obtained from 2.94 μm isotropic resolution. This study provides a generic method of image processing which considers beam hardening artefact so as to avoid heuristic choice of global threshold value. The novelty of this work is the quantification of numerous three-dimensional canals features, such as orientation or canal length, but also connectivity features, such as opening angle, and the accurate definition of canals as voids which ranges from connectivity to possibly another intersection. The script was applied to one humeral and one femoral samples in order to analyse the difference in architecture between bearing and non-bearing cortical bones. This preliminary study reveals that the femoral specimen is more porous than the humeral one whereas the canal network is denser and more connected., (Copyright © 2018 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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141. Phytochemical Screening, Polyphenols Content, Antioxidant Power, and Antibacterial Activity of Herniaria hirsuta from Morocco.
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Ammor K, Bousta D, Jennan S, Bennani B, Chaqroune A, and Mahjoubi F
- Subjects
- Drug Evaluation, Preclinical, Morocco, Plant Components, Aerial, Anti-Bacterial Agents analysis, Antioxidants analysis, Caryophyllaceae, Phytochemicals analysis, Plant Extracts analysis, Polyphenols analysis
- Abstract
The aim of this study is to investigate in vitro antioxidant and antibacterial activities of the aqueous and hydroethanolic extracts for aerial parts of Herniaria hirsuta . Extracts were screened for their possible antioxidant activities by three tests: DPPH free radical-scavenging, reducing power, and molybdenum systems. The screening of antibacterial activity of extracts was individually evaluated against sixteen bacteria species using a disc diffusion method. Flavonoids, total phenols, and tannins content were performed for both extracts. It shows higher content in the hydroethanolic extract. The hydroethanolic extract showed a significant antioxidant activity for the three methods studies to the aqueous extract, but nonsignificant results compared to the reference (BHT). However, both extracts have negative effect on the strains studies for the antibacterial activity.
- Published
- 2018
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142. The First Molecular Screening of MLH1 and MSH2 Genes in Moroccan Colorectal Cancer Patients Shows a Relatively High Mutational Prevalence.
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Moufid FZ, Bouguenouch L, El Bouchikhi I, Chbani L, Iraqui Houssaini M, Sekal M, Belhassan K, Bennani B, and Ouldim K
- Subjects
- Adult, Aged, Aged, 80 and over, Cohort Studies, Colorectal Neoplasms, Hereditary Nonpolyposis genetics, DNA Mismatch Repair genetics, DNA Mutational Analysis, Early Detection of Cancer, Female, Genetic Predisposition to Disease genetics, Germ-Line Mutation, Humans, Male, Middle Aged, Morocco epidemiology, MutL Protein Homolog 1 metabolism, MutS Homolog 2 Protein metabolism, Prevalence, Risk Factors, Colorectal Neoplasms genetics, MutL Protein Homolog 1 genetics, MutS Homolog 2 Protein genetics
- Abstract
Introduction: Lynch syndrome (LS) is an autosomal dominant disorder characterized by early age of onset and increased risk of developing extracolonic tumors. Molecular diagnosis of LS requires identification of germline mutations in one of the Mismatch Repair (MMR) genes., Aim: The objective of the study was to investigate the prevalence of MLH1/MSH2 mutation carriers among Moroccan patients with colorectal cancer (CRC) in a hospital-based cohort., Methods: In this study, 214 CRC patients from COLORECFez cohort were included. Patients whose tumors showed MMR deficiency (MMR-D) and wild-type BRAF were selected to undergo mutational analysis of the MLH1 and MSH2 genes using Sanger sequencing., Results: A total of 24 MMR-D tumors were identified (11.2%) among 214 CRC tested for MMR protein expression. The BRAF p.Val600Glu mutation was absent in all tumors deficient for MLH1 protein. Molecular screening showed germline MMR mutations (MLH1/MSH2) in four cases, two of which fulfilled Amsterdam criteria II and two met at least one of the revised Bethesda guidelines. The estimated frequency of MLH1/MSH2 mutations in Moroccan CRC patients was 1.87%., Conclusions: The present study reports a relatively high incidence of MLH1/MSH2 (1.87%). These results confirm the contribution of MMR genes to CRC susceptibility in our population and provide evidence regarding the requirement of implementing a national screening program for LS in Morocco.
- Published
- 2018
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143. [Digital ischemia revealing multiple myeloma].
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Khammar Z, Ouazzani M, Bennani B, Oubelkacem N, and Berrady R
- Subjects
- Aged, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Bortezomib administration & dosage, Cryoglobulinemia etiology, Dexamethasone administration & dosage, Humans, Male, Multiple Myeloma complications, Multiple Myeloma drug therapy, Necrosis, Osteolysis diagnostic imaging, Osteolysis etiology, Thalidomide administration & dosage, Fingers blood supply, Ischemia etiology, Multiple Myeloma diagnosis, Paraneoplastic Syndromes etiology, Skin Ulcer etiology, Toes blood supply
- Abstract
Digital ulcers generally arise in a context of microangiopathy-related focal ischemia. In women, connective tissue diseases are the main etiology, while in men the cause is often diffuse arterial disease, e.g. Leo-Buerger disease, or emboligenic heart disease. A paraneoplastic origin of digital necrosis due to ischemia is rarely reported. A 75-year-old man presented with cyanosis of the fingertips and toes that had begun one month earlier. The physical examination found pulp ulcers on the fingers and toes of both hands and feet. Two weeks later, necrotic damage developed distally, with no other associated symptoms. Blood tests were suggestive of Kahler disease; immunodeficiency disorders tests were negative; the cyroglobulin test was positive. Multiple-drug chemotherapy was followed by clinical improvement. Distal necrotic damage is a frequent inaugural symptom in vascular disease. If the common causal mechanisms (iatrogenic, occupational, toxic, atheromatous, emboligenic heart disease, or systemic disease) have been ruled out, it is important to search for a blood disorder or cancer as the cause of distal necrotic damage., (Copyright © 2017 Elsevier Masson SAS. All rights reserved.)
- Published
- 2018
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144. VacA and CagA Status as Biomarker of Two Opposite End Outcomes of Helicobacter pylori Infection (Gastric Cancer and Duodenal Ulcer) in a Moroccan Population.
- Author
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El Khadir M, Alaoui Boukhris S, Benajah DA, El Rhazi K, Ibrahimi SA, El Abkari M, Harmouch T, Nejjari C, Mahmoud M, Benlemlih M, and Bennani B
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Biomarkers, Tumor genetics, Duodenal Ulcer microbiology, Duodenal Ulcer pathology, Female, Gastric Mucosa microbiology, Genotype, Helicobacter Infections microbiology, Helicobacter Infections pathology, Helicobacter pylori genetics, Helicobacter pylori pathogenicity, Humans, Male, Middle Aged, Stomach Neoplasms microbiology, Stomach Neoplasms pathology, Antigens, Bacterial genetics, Bacterial Proteins genetics, Duodenal Ulcer genetics, Helicobacter Infections genetics, Stomach Neoplasms genetics
- Abstract
Helicobacter pylori (H. pylori) infection induces inflammation of the gastric mucosa, which may progress to precancerous lesions leading to gastric cancer. Pathological determinism is associated to some virulence genes of the bacterium, notably the vacA and cagA genes. The present study aimed to determine the H. pylori genotypes distribution and their association with sex, age and gastric diseases in a Moroccan population. Gastric biopsy was taken from 1079 consenting patients. The specimens were processed by PCR to identify H. pylori and to determine the genotypic profile by PCR characterizing vacA s, vacA m and vacA i regions directly from biopsies H. pylori positives. VacA genotyping revealed the predominance of vacA m2 (53.2%), vacA s2 (52.9%) and vacA i2 (52%). The most virulent vacA alleles (s1, i1 and m1) are more predominant in men (47.3%, 41.9% and 46.1% respectively) than in women (38.3%, 33.3% and 37% respectively). However, the association between vacA genotypes and age did not reach a statistical significant value. Logistic regression analysis results show that vacA i1m1 and vacA i1m2 genotypes were strongly associated with the risk of GC, the Odds Ratio (95% confidence interval) was 29.73 [5.08-173.73] and 9.17 [2.06-40.82] respectively, while vacAs1/cagA+ seems to be a risk factor for DU since it is inversely associated with GC (OR was 0.13 [0.02-0.75]. The results of this study suggest that vacA i1 genotype independently to vacAm status may be of a clinical usefulness and will help to identify patients at a high risk of GC development., Competing Interests: The authors have declared that no competing interests exist.
- Published
- 2017
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145. Detection of Helicobacter pylori urease antigen in saliva in patients with different gastric H. pylori status.
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El Khadir M, Alaoui Boukhris S, Benajah DA, El Rhazi K, Ibrahimi SA, El Abkari M, Harmouch T, Nejjari C, Mahmoud M, Benlemlih M, and Bennani B
- Subjects
- Adolescent, Adult, Aged, Aged, 80 and over, Chromatography, Affinity, Female, Helicobacter pylori enzymology, Helicobacter pylori immunology, Humans, Male, Middle Aged, Polymerase Chain Reaction, Antigens, Bacterial analysis, Gastric Mucosa microbiology, Helicobacter pylori isolation & purification, Saliva microbiology, Urease analysis
- Abstract
Background: Finding a simple, accurate, and noninvasive diagnosis method is a substantial challenge for the detection of Helicobacter pylori. The aim of the present study was to compare the presence of H. pylori urease antigen in saliva with the presence of this bacterium in gastric mucosa., Methods: Saliva samples and gastric biopsies were taken from 153 consenting Moroccan patients. Saliva samples were analyzed using an immunochromatographic test for urease antigen H. pylori detection. Thereafter, the gastric biopsies were analyzed by histology and polymerase chain reaction (PCR) to detect this bacterium., Results: From a total of 153 recruited Moroccan patients, H. pylori was detected in 28 (18.30%), 87 (57.24%), and 69 (45.10%) cases by saliva test, histology, and PCR, respectively. A significant association was observed between the presence of H. pylori antigen in saliva and age. However, no association was found with sex, H. pylori virulence factors, gastric disease outcome, and density of the bacterium on the gastric mucosa. Considering that only 90 patients presented concordant results on H. pylori diagnosis (positive or negative) by both histology and PCR, the immunochromatographic test showed very low sensitivity (29.79%) and high specificity (90.70%). Of these two tests, the positive and negative predictive values were 77.78% and 54.17%, respectively. The accuracy of the test for salivary detection of urease antigen H. pylori was 58.89%., Conclusion: This study demonstrated a low detection rate of H. pylori antigens in saliva compared with the presence of this bacterium in gastric mucosa, suggesting that saliva cannot be used as a suitable sample for the diagnosis of H. pylori in our study population., (Copyright © 2016. Published by Elsevier Taiwan LLC.)
- Published
- 2016
- Full Text
- View/download PDF
146. Distribution of Carcinogenic Human Papillomavirus Genotypes and Association to Cervical Lesions among Women in Fez (Morocco).
- Author
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Souho T, El Fatemi H, Karim S, El Rhazi K, Bouchikhi C, Banani A, Melhouf MA, Benlemlih M, and Bennani B
- Subjects
- Adult, Aged, Aged, 80 and over, Cervix Uteri pathology, Female, Genotype, Humans, Middle Aged, Morocco, Papanicolaou Test, Papillomavirus Infections genetics, Papillomavirus Infections pathology, Uterine Cervical Neoplasms pathology, Young Adult, Cervix Uteri virology, DNA, Viral genetics, Papillomaviridae genetics, Papillomavirus Infections virology, Uterine Cervical Neoplasms virology
- Abstract
Objectives: To determine the distribution of cervical high-risk human papillomavirus genotypes and their association to cellular abnormalities in women from Fez and its neighborhood., Methods: Women attending the Hassan II University Hospital for cervical pap smears were recruited after an informed consent. Interviews and two cervical samples were performed for each woman. Cervical samples were used for cytological analysis and HPV DNA detection. HPV was typed using a method based on multiplex PCR with fluorescently labeled specific primers followed by capillary electrophoresis. The study was approved by the ethics committee of the Faculty of Medicine and Pharmacy of Fez., Results: The HPV prevalence in the studied population was 43.1% and the most prevalent types were HPV 53 (23 cases); HPV 16 (20 cases); HPV 35 (18 cases); HPV 51 (10 cases) and HPV 56 (7 cases). From the 619 confirmed pap smears, 20% were abnormal. The cytological abnormalities were significantly associated to HPV infection, women age, number of pregnancies and parity (p < 0.05)., Conclusion: More attention should be given to HPV in Morocco because it represents an important public health concern. The distribution of carcinogenic HPV types in the studied population is different from the data in other regions but epidemiological studies in other Moroccan regions are required.
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- 2016
- Full Text
- View/download PDF
147. [A tumor of the vagina not to overlook, the mesonephric adenocarcinoma: about a case report and review of literature].
- Author
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Amal B, Hind el F, Hanane S, Hayat R, Kaoutar M, Abdelaziz B, Taoufik H, and Affaf A
- Subjects
- Adenocarcinoma pathology, Adenocarcinoma therapy, Female, Humans, Keratins metabolism, Mesonephroma pathology, Mesonephroma therapy, Middle Aged, Neprilysin metabolism, Vaginal Neoplasms pathology, Vaginal Neoplasms therapy, Adenocarcinoma diagnosis, Mesonephroma diagnosis, Vaginal Neoplasms diagnosis
- Published
- 2015
- Full Text
- View/download PDF
148. Human papillomavirus infection and fertility alteration: a systematic review.
- Author
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Souho T, Benlemlih M, and Bennani B
- Subjects
- Abortion, Spontaneous etiology, Female, Fertilization in Vitro, Humans, Male, Papillomavirus Infections epidemiology, Pregnancy, Reproductive Health, Semen, Semen Analysis, Sexually Transmitted Diseases complications, Sexually Transmitted Diseases virology, Fertility, Infertility, Female etiology, Papillomaviridae, Papillomavirus Infections complications, Papillomavirus Infections virology
- Abstract
Background: HPV is the most prevalent sexually transmitted infection and its effect in cancer induction is well documented. HPV infections are mostly asymptomatic, but it is unclear whether HPV infections can result in alterations of reproductive health., Objective: To determine the relationship between human papillomavirus infections and reproductive health in both men and women., Methods: A systematic literature review was performed in PubMed and ScienceDirect data bases from January 1994 through August 2014., Results: HPV infections are shown to be significantly associated to many adverse effects in the reproductive function. These adverse effects were reported in different levels from cells production to pregnancy and may be related to the infecting genotype., Conclusions: It appears from this study that HPV detection and genotyping could be of great value in infertility diagnosis at least in idiopathic infertility cases. Like for the risk of carcinogenesis, another classification of HPV regarding the risk of fertility alteration may be considered after deep investigations.
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- 2015
- Full Text
- View/download PDF
149. Public awareness of cancer risk factors in the Moroccan population: a population-based cross-sectional study.
- Author
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El Rhazi K, Bennani B, El Fakir S, Boly A, Bekkali R, Zidouh A, and Nejjari C
- Subjects
- Adult, Cross-Sectional Studies, Female, Humans, Male, Middle Aged, Morocco, Risk Factors, Risk-Taking, Rural Population, Surveys and Questionnaires, Health Knowledge, Attitudes, Practice, Neoplasms etiology
- Abstract
Background: In Morocco, knowledge of cancer risk factors, a crucial element in the process of behavioral change, has never been evaluated. This study aims to provide information on the level of awareness of cancer risk factors among the Moroccan general population., Methods: A cross sectional survey was carried out in May 2008, using a stratified sampling method in a representative sample of the Moroccan adult population. The used questionnaire included social and demographic data as well as questions about 14 cancer related factors regarding passive or active smoking, alcoholic beverages, obesity, physical inactivity, food coloring, red meat, fat, salt, fruit, vegetables, olive oil, green tea, coffee, breast-feeding. Subjects had to choose between 3 propositions for each proposed factor (risk factor/Protective factor/Don't Know). The knowledge score was calculated by summing the correct answer for each proposed factor except coffee and food coloring. The answer was assigned 1 if it's correct or 0 if it was incorrect or the participant responded 'don't know. The maximum knowledge score was 12. Multivariate linear regression model was used to evaluate the determinants of knowledge score., Results: Among 2891 subjects who participated to the survey, 49.5% were men and 42% were from a rural area. The mean age was 41.6 ± 15.2 years. The mean knowledge score of cancer related factors was 8.45 ± 3.10 points. Knowledge score increased with educational level (β = -0.65 if school year ≤6 versus >6) and housing category (β = 1.80 in high standing housing vs rural housing). It was also higher in urban area, among never smokers and among people never consuming alcohol compared to others groups., Conclusion: These results provide valuable information necessary to establish relevant cancer prevention strategies in Morocco aiming to enhance and improve people's knowledge about risk factors especially in some target groups.
- Published
- 2014
- Full Text
- View/download PDF
150. [A diagnostic trap in urologic emergencies].
- Author
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Hassan B, Imad Z, Yassine R, Houda B, Tarik K, Khalid el K, Abdellatif K, and Ahmed IA
- Subjects
- Adolescent, Anti-Bacterial Agents therapeutic use, Bacteremia microbiology, Bacteremia therapy, Cellulitis microbiology, Cellulitis therapy, Diagnosis, Differential, Drug Therapy, Combination, Emergencies, Erythrocyte Transfusion, Glucocorticoids therapeutic use, Humans, Male, Perinephritis microbiology, Perinephritis therapy, Platelet Transfusion, Risk Factors, Thrombocytopenia diagnosis, Treatment Outcome, Vitiligo complications, Bacteremia complications, Bacteremia diagnosis, Cellulitis diagnosis, Perinephritis diagnosis, Urology
- Published
- 2014
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