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Bishr MK, Banks J, Abdelaziz MS, Badawi M, Crane PW, Donigiewicz UJ, Elkorety M, Girgis M, Humphreys A, Isherwood J, Kahan J, Keelan S, Lindqvist EK, Nixon I, Sackey H, Sars C, Soliman H, Touqan N, Remoundos DD, Ahmed M. Multidisciplinary Management of Phyllodes Tumours and Breast Sarcoma: A Cross-sectional Survey of Clinical Practice across the UK and Ireland. Clin Oncol (R Coll Radiol) 2024; 36:e31-e39. [PMID: 38294995 DOI: 10.1016/j.clon.2023.10.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Revised: 09/26/2023] [Accepted: 10/17/2023] [Indexed: 02/02/2024]
Abstract
AIMS Phyllodes tumours and breast sarcomas are uncommon tumours and their rarity poses significant challenges in diagnosis and management. This cross-sectional study was conducted to evaluate the multidisciplinary clinical practice for these tumours across the UK and Ireland, with the aim of identifying gaps in knowledge and providing direction for establishing national guidelines. MATERIALS AND METHODS An international survey was adapted and circulated to breast and/or sarcoma surgeons and oncologists in the UK and Ireland through national organisations. Multidisciplinary team (MDT) responses were analysed anonymously. RESULTS Twenty-eight MDTs participated in this study, predominately from high-volume units (85.5%). Although only 43% of the surveyed units were part of a trust that holds a sarcoma MDT, 68% of units managed malignant phyllodes and angiosarcoma, whereas 64.5% managed soft-tissue sarcoma of the breast. Across all subtypes, axillary surgery was recommended by 14-21% of the MDTs and the most recommended resection margins for breast surgery were 'no tumour on ink' in benign phyllodes (39%) and 10 mm in the remaining subtypes (25-29%). Immediate breast reconstruction was supported by 11-18% of MDTs for breast sarcoma subtypes, whereas 36% and 32% advocated this approach in benign and borderline phyllodes tumours, respectively. Adjuvant radiotherapy and chemotherapy were recommended by up to 29% and 11% of the MDTs, respectively. CONCLUSION The results of this study demonstrate a wide variation in clinical practice across the surveyed MDTs. As only 28 MDTs participated in our study, with under-representation from low-volume units, our results might be an underestimation of the variability in practice across the UK and Ireland. This multi-institutional study sheds light on controversial aspects in the management of phyllodes tumours and breast sarcoma, identifies the need for national guidelines to inform best practice, and calls for the centralisation of the management of breast sarcoma within specialist centres.
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Affiliation(s)
- M K Bishr
- The Royal Marsden NHS Foundation Trust, London, UK.
| | - J Banks
- The Royal Devon University Healthcare NHS Foundation Trust, Exeter, UK
| | - M S Abdelaziz
- National Cancer Institute, Cairo University, Cairo, Egypt; University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - M Badawi
- East Sussex Healthcare Trust, Conquest Hospital, St Leonards-on-sea, UK
| | - P W Crane
- Queen Elizabeth II Hospital, Welwyn Garden City, UK
| | | | - M Elkorety
- West Hertfordshire Teaching Hospitals NHS Trust, Watford, UK
| | - M Girgis
- West Suffolk NHS Hospital, Bury St Edmunds, UK
| | - A Humphreys
- Northumbria Healthcare NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - J Isherwood
- Milton Keynes University Hospital NHS Foundation Trust, Milton Keynes, UK
| | - J Kahan
- Velindre Cancer Centre, Cardiff, UK
| | - S Keelan
- Royal College of Surgeons in Ireland (RCSI) University of Medicine and Health Sciences, Dublin, Ireland
| | - E K Lindqvist
- Department of Clinical Science and Education, Stockholm South General Hospital, Karolinska Institutet, Stockholm, Sweden; Department of Surgery, Stockholm South General Hospital, Stockholm, Sweden
| | - I Nixon
- Management Science, Business School, Strathclyde University, Glasgow, UK; The Beatson West of Scotland Cancer Centre, Glasgow, UK
| | - H Sackey
- Division of Cancer, Department of Breast, Endocrine Tumors and Sarcoma, Karolinska University Hospital Stockholm, Stockholm, Sweden; Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - C Sars
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden
| | - H Soliman
- Kings' College Hospital, Orpington, UK
| | - N Touqan
- Manchester University NHS Foundation Trust, North Manchester General Hospital, Manchester, UK
| | - D D Remoundos
- Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - M Ahmed
- University College London Hospitals NHS Foundation Trust, London, UK
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Boukair K, Salazar JM, Weber G, Badawi M, Ouaskit S, Simon JM. Toward the development of sensors for lung cancer: The adsorption of 1-propanol on hydrophobic zeolites. J Chem Phys 2023; 159:214712. [PMID: 38059548 DOI: 10.1063/5.0168230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/07/2023] [Indexed: 12/08/2023] Open
Abstract
A healthy breath is mainly composed of water, carbon dioxide, molecular nitrogen, and oxygen and it contains many species, in small quantities, which are related to the ambient atmosphere and the metabolism. The breath of a person affected by lung cancer presents a concentration of 1-propanol higher than usual. In this context, the development of specific sensors to detect 1-propanol from breath is of high interest. The amount of propanol usually detected on the breath is of few ppb; this small quantity is a handicap for a reliable diagnostic. This limitation can be overcome if the sensor is equipped with a pre-concentrator. Our studies aim to provide an efficient material playing this role. This will contribute to the development of reliable and easy to use lung cancer detectors. For this, we investigate the properties of a few hydrophobic porous materials (chabazite, silicalite-1, and dealuminated faujasite). Hydrophobic structures are used to avoid saturation of materials by the water present in the exhaled breath. Our experimental and simulation results suggest that silicalite -1 (MFI) is the most suitable structure to be used as a pre-concentrator.
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Affiliation(s)
- K Boukair
- Laboratoire de Physique de la Matière Condensée, Hassan 2 University, Casablanca, Morroco
| | - J M Salazar
- ICB-UMR 6303 CNRS, Bourgogne Franche Comté University, Dijon, France
| | - G Weber
- ICB-UMR 6303 CNRS, Bourgogne Franche Comté University, Dijon, France
| | - M Badawi
- Laboratoire de Physique et Chimie Théoriques, University of Lorraine, Nancy, France
- Université de Lorraine, CNRS, L2CM, F-57000 Metz, France
| | - S Ouaskit
- Laboratoire de Physique de la Matière Condensée, Hassan 2 University, Casablanca, Morroco
| | - J-M Simon
- ICB-UMR 6303 CNRS, Bourgogne Franche Comté University, Dijon, France
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Bendaoudi L, Ouahrani T, Daouli A, Rerbal B, Boufatah RM, Morales-García Á, Franco R, Bedrane Z, Badawi M, Errandonea D. Electronic and electrocatalytic properties of PbTiO 3: unveiling the effect of strain and oxygen vacancy. Dalton Trans 2023; 52:11965-11980. [PMID: 37577968 DOI: 10.1039/d3dt01478a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
First-principles calculations based on density-functional theory have been used to investigate the effect of biaxial strain and oxygen vacancy on the electronic, photocatalytic, and electrocatalytic properties of PbTiO3 oxide. Our results show that PbTiO3 has a high exciton binding energy and a band gap that can be easily moderated with different strain regimes. From a reactivity viewpoint, the highly exothermic adsorption of hydrogen atoms in both pristine and strained PbTiO3 structures does not make it a potential electrocatalyst for the hydrogen evolution reaction. Fortunately, the presence of oxygen vacancies on the PbTiO3 surface induces moderate adsorption energies, making the reduced PbTiO3 suitable for hydrogen evolution reaction processes.
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Affiliation(s)
- L Bendaoudi
- Laboratory of Materials Discovery, Unit of Research Materials and Renewable Energies, LEPM-URMER, Université de Tlemcen 13000, Algeria
| | - T Ouahrani
- École supérieure en sciences appliquées, ESSA-Tlemcen, BB 165 RP Bel Horizon, Tlemcen 13000, Algeria.
- Laboratoire de Physique Théorique, Université de Tlemcen, BP 119, 13000, Algeria.
| | - A Daouli
- Université de Lorraine and CNRS, LPCT, UMR 7019, 54506 Vandoeuvre-lés-Nancy, France
| | - B Rerbal
- Laboratory of Materials Discovery, Unit of Research Materials and Renewable Energies, LEPM-URMER, Université de Tlemcen 13000, Algeria
| | - R M Boufatah
- Laboratoire de Physique Théorique, Université de Tlemcen, BP 119, 13000, Algeria.
| | - Á Morales-García
- Departament de Ciéncia de Materials i Química Física & Institut de Química Teórica i Computacional (IQTCUB), Universitat de Barcelona, c/Martí i Franquès 1-11, 08028 Barcelona, Spain
| | - R Franco
- (MALTA) Consolider Team and Departamento de Química Física y Analítica, Universidad de Oviedo, E-33006 Oviedo, Spain
| | - Z Bedrane
- Laboratoire de Physique Théorique, Université de Tlemcen, BP 119, 13000, Algeria.
| | - M Badawi
- Université de Lorraine and CNRS, LPCT, UMR 7019, 54506 Vandoeuvre-lés-Nancy, France
| | - D Errandonea
- Departamento de Física Aplicada - Instituto de Ciencia de Materiales, Matter at High Pressure (MALTA) Consolider Team, Universidad de Valencia, Edificio de Investigación, C/Dr. Moliner 50, Burjassot, 46100, Valencia, Spain.
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Ehsanimehr S, Sonnier R, Badawi M, Ducos F, Kadi N, Skrifvars M, Saeb MR, Vahabi H. Sustainable Flame-Retardant Flax Fabrics by Engineered Layer-by-Layer Surface Functionalization with Phytic Acid and Polyethylenimine. Fire Technol 2023:1-19. [PMID: 37360675 PMCID: PMC10042673 DOI: 10.1007/s10694-023-01387-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Accepted: 02/13/2023] [Indexed: 06/28/2023]
Abstract
New generation of mission-oriented fabrics meets advanced requirements; such as electrical conductivity, flame retardancy, and anti-bacterial properties. However, sustainability concerns still are on-demand in fabrication of multi-functional fabrics. In this work, we used a bio-based phosphorus molecule (phytic acid, PA) to reinforce flax fabrics against flame via layer-by-layer consecutive surface modification. First, the flax fabric was treated with PA. Then, polyethylenimine (PEI) was localized above it to create negative charges, and finally PA was deposited as top-layer. Fourier-transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX), and inductively-coupled plasma atomic emission spectrometry (ICP-AES) proved successful chemical treatment. Pyrolysis-combustion flow calorimetry (PCFC) showed significant drop by about 77% in the peak of heat release rate (pHRR) from 215 W/g for untreated to 50 W/g for treated flax fabric. Likewise, the total heat release (THR) decreased by more than three times from 11 to 3.2 kJ/g. Mechanical behavior of the treated flax fabric was completely different from untreated flax fabrics, changing from almost highly-strengthened behavior with short elongation at break to a rubber-like behavior with significantly higher elongation at break. Surface friction resistance was also improved, such that the abrasion resistance of the modified fabrics increased up to 30,000 rub cycles without rupture. Supplementary Information The online version contains supplementary material available at 10.1007/s10694-023-01387-7.
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Affiliation(s)
- S. Ehsanimehr
- Université de Lorraine, CNRS, LPCT, 54000 Nancy, France
| | - R. Sonnier
- IMT – Mines Ales, Polymers Hybrids and Composites (PCH), 6 Avenue De Clavières, 30319 Alès Cedex, France
| | - M. Badawi
- Université de Lorraine, CNRS, LPCT, 54000 Nancy, France
| | - F. Ducos
- Université de Lorraine, CentraleSupélec, LMOPS, 57000 Metz, France
| | - N. Kadi
- Department of Textile Technology, Faculty of Textiles, Engineering and Business, University of Borås, 501 90 Borås, Sweden
| | - M. Skrifvars
- Swedish Centre for Resource Recovery, Faculty of Textiles, Engineering and Business, University of Borås, 501 90 Borås, Sweden
| | - M. R. Saeb
- Department of Polymer Technology, Faculty of Chemistry, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - H. Vahabi
- Université de Lorraine, CentraleSupélec, LMOPS, 57000 Metz, France
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Rotow J, Yoh K, Powderly J, Shimizu T, Perets R, Paz-Ares L, Phillips A, Souers A, Ansell P, Jin J, Badawi M, Saab R, Morrison-Thiele G, Jeffries S, Neagu Aristide M, Carneiro B, Papadopoulos K. 1185TiP First-in-human phase I study of ABBV-637 as monotherapy and in combination in patients with relapsed and refractory solid tumors. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Ehsanimehr S, Sonnier R, Najafi P, Ducos F, Badawi M, Formela K, Saeb M, Vahabi H. Layer-by-layer polymer deposited fabrics with superior flame retardancy and electrical conductivity. REACT FUNCT POLYM 2022. [DOI: 10.1016/j.reactfunctpolym.2022.105221] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Radwan K, Abdelfattah G, Badawi M, Zayed E, Tarrd M, El-Baghdady M, Abd El-Maksoud R. Genetic variations in some Egyptian Zea mexicana genotypes based on RAPD and AFLP markers. Journal of Bioscience and Applied Research 2021; 0:77-92. [DOI: 10.21608/jbaar.2021.177577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Ibrahim D, Abdelfattah-Hassan A, Badawi M, Ismail TA, Bendary MM, Abdelaziz AM, Mosbah RA, Mohamed DI, Arisha AH, El-Hamid MIA. Thymol nanoemulsion promoted broiler chicken's growth, gastrointestinal barrier and bacterial community and conferred protection against Salmonella Typhimurium. Sci Rep 2021; 11:7742. [PMID: 33833292 PMCID: PMC8032708 DOI: 10.1038/s41598-021-86990-w] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Accepted: 03/23/2021] [Indexed: 02/08/2023] Open
Abstract
The present study involved in vivo evaluation of the growth promoting effects of thymol and thymol nanoemulsion and their protection against Salmonella Typhimurium infection in broilers. One-day old 2400 chicks were randomly divided into eight groups; negative and positive control groups fed basal diet without additives and thymol and thymol nanoemulsion groups (0.25, 0.5 and 1% each). At d 23, all chicks except negative control were challenged with S. Typhimurium. Over the total growing period, birds fed 1% thymol nanoemulsion showed better growth performance even after S. Typhimurium challenge, which came parallel with upregulation of digestive enzyme genes (AMY2A, PNLIP and CCK). Additionally, higher levels of thymol nanoemulsion upregulated the expression of MUC-2, FABP2, IL-10, IgA and tight junction proteins genes and downregulated IL-2 and IL-6 genes expression. Moreover, 1% thymol nanoemulsion, and to lesser extent 0.5% thymol nanoemulsion and 1% thymol, corrected the histological alterations of cecum and liver postinfection. Finally, supplementation of 1% thymol, 0.5 and 1% thymol nanoemulsion led to increased Lactobacilli counts and decreased S. Typhimurium populations and downregulated invA gene expression postinfection. This first report of supplying thymol nanoemulsion in broiler diets proved that 1% nano-thymol is a potential growth promoting and antibacterial agent.
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Affiliation(s)
- Doaa Ibrahim
- grid.31451.320000 0001 2158 2757Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Ahmed Abdelfattah-Hassan
- grid.31451.320000 0001 2158 2757Department of Anatomy and Embryology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt ,grid.440881.10000 0004 0576 5483Biomedical Sciences Program, Zewail City of Science and Technology, University of Science and Technology, October Gardens, 6th of October, Giza, 12578 Egypt
| | - M. Badawi
- grid.31451.320000 0001 2158 2757Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Tamer Ahmed Ismail
- grid.412895.30000 0004 0419 5255Department of Clinical Laboratory Sciences, Turabah University College, Taif University, P.O. Box 11099, Taif, 21944 Saudi Arabia
| | - Mahmoud M. Bendary
- grid.440879.60000 0004 0578 4430Department of Microbiology and Immunology, Faculty of Pharmacy, Port Said University, Port Said Governorate, Egypt
| | - Adel M. Abdelaziz
- grid.31451.320000 0001 2158 2757Faculty of Veterinary Medicine, Veterinary Educational Hospital, Zagazig University, Zagazig, Egypt
| | - Rasha A. Mosbah
- grid.31451.320000 0001 2158 2757Zagazig University Hospital, Zagazig, Egypt
| | - Dalia Ibrahim Mohamed
- Department of Biochemistry, Zagazig Branch, Agriculture Research Center, Animal Health Research Institute, Zagazig, Egypt
| | - Ahmed H. Arisha
- grid.507995.70000 0004 6073 8904Department of Animal Physiology and Biochemistry, Faculty of Veterinary Medicine, Badr University in Cairo (BUC), Badr City, Cairo, Egypt ,grid.31451.320000 0001 2158 2757Department of Physiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Marwa I. Abd El-Hamid
- grid.31451.320000 0001 2158 2757Department of Microbiology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
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koraychy EE, Meddad M, Badawi M, Mazroui M. Sintering and deposition of homo- and heteronanoparticles of aluminum and nickel on aluminum (100) substrate. Chem Phys 2021. [DOI: 10.1016/j.chemphys.2020.111037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Berro Y, Gueddida S, Bouizi Y, Bellouard C, Bendeif EE, Gansmuller A, Celzard A, Fierro V, Ihiawakrim D, Ersen O, Kassir M, El Haj Hassan F, Lebegue S, Badawi M, Canilho N, Pasc A. Imprinting isolated single iron atoms onto mesoporous silica by templating with metallosurfactants. J Colloid Interface Sci 2020; 573:193-203. [PMID: 32278950 DOI: 10.1016/j.jcis.2020.03.095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 03/12/2020] [Accepted: 03/26/2020] [Indexed: 01/03/2023]
Abstract
HYPOTHESIS One of the main drawbacks of metal-supported materials, traditionally prepared by the impregnation of metal salts onto pre-synthesized porous supports, is the formation of large and unevenly dispersed particles. Generally, the larger are the particles, the lower is the number of catalytic sites. Maximum atom exposure can be reached within single-atom materials, which appear therefore as the next generation of porous catalysts. EXPERIMENTS Herein, we designed single iron atom-supported silica materials through sol-gel hydrothermal treatment using mixtures of a non-ionic surfactant (Pluronic P123) and a metallosurfactant (cetyltrimethylammoniumtrichloromonobromoferrate, CTAF) as porogens. The ratio between the Pluronic P123 and the CTAF enables to control the silica structural and textural properties. More importantly, CTAF acts as an iron source, which amount could be simply tuned by varying the non-ionic/metallo surfactants molar ratio. FINDINGS The fine distribution of iron atoms onto the silica mesopores results from the iron distribution within the mixed micelles, which serve as templates for the polymerization of the silica matrix. Several characterization methods were used to determine the structural and textural properties of the silica material (XRD, N2 sorption isotherms and TEM) and the homogeneous distribution and lack of clustering of iron atoms in the resulting materials (elemental analysis, magnetic measurements, pair distribution function (PDF), MAS-NMR and TEM mapping). The oxidation and spin state of single-iron atoms determined from their magnetic properties were confirmed by DFT calculations. This strategy might find straightforward applications in preparing versatile single atom catalysts, with improved efficiency compared to nanosized ones.
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Affiliation(s)
- Y Berro
- L2CM UMR CNRS 7053, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France; LPCT UMR CNRS 7019, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France; PRASE, Université Libanaise, Hadath, Lebanon
| | - S Gueddida
- LPCT UMR CNRS 7019, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France
| | - Y Bouizi
- L2CM UMR CNRS 7053, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France
| | - C Bellouard
- IJL UMR CNRS 7198, Université de Lorraine, 54000 Nancy, France.
| | - El-E Bendeif
- CRM2 UMR CNRS 7036, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France
| | - A Gansmuller
- CRM2 UMR CNRS 7036, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France
| | - A Celzard
- IJL UMR CNRS 7198, Université de Lorraine, 88000 Epinal, France
| | - V Fierro
- IJL UMR CNRS 7198, Université de Lorraine, 88000 Epinal, France
| | - D Ihiawakrim
- IPCMS UMR CNRS 7504, Université de Strasbourg, 67034 Strasbourg, France
| | - O Ersen
- IPCMS UMR CNRS 7504, Université de Strasbourg, 67034 Strasbourg, France
| | - M Kassir
- PRASE, Université Libanaise, Hadath, Lebanon
| | | | - S Lebegue
- LPCT UMR CNRS 7019, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France
| | - M Badawi
- LPCT UMR CNRS 7019, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France
| | - N Canilho
- L2CM UMR CNRS 7053, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France
| | - A Pasc
- L2CM UMR CNRS 7053, Université de Lorraine, 54506 Vandœuvre-lès-Nancy, France.
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Saidi MZ, Pasc A, El Moujahid C, Canilho N, Badawi M, Delgado-Sanchez C, Celzard A, Fierro V, Peignier R, Kouitat-Njiwa R, Akram H, Chafik T. Improved tribological properties, thermal and colloidal stability of poly-α-olefins based lubricants with hydrophobic MoS 2 submicron additives. J Colloid Interface Sci 2020; 562:91-101. [PMID: 31837623 DOI: 10.1016/j.jcis.2019.12.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/30/2019] [Accepted: 12/02/2019] [Indexed: 11/19/2022]
Abstract
HYPOTHESIS Newtonian liquids, usually used as base oil lubricants, exhibit low viscosity under extreme thermal conditions, needed for the functioning of wind turbines. This is directly affecting the colloidal stability and the tribological properties of the formulations containing additives, such as MoS2. Here, it was hypothesized that the surface hydrophobization of MoS2 particles will allow for an increased colloidal stability of the resulting formulations, for temperatures as high as 80 °C. EXPERIMENTS The antifriction properties and the thermal stability of the designed formulations were determined on submicron MoS2 particles dispersed in poly-α-olefins (PAO) base oils of different dynamic viscosities (from 32 to 1650 mPa·s at 25 °C). The submicron particles of MoS2 (300-500 nm in diameter) were synthesised by a simple one-pot solvothermal method under mild conditions. The resulting particles were hydrophobized in situ in PAO base oils using alkyltrichlorosilane grafting agents with two chain lengths (C8 and C18). FINDINGS The covalent grafting of alkylsilanes through Mo-O-Si bonds was confirmed by DFT calculations and FT-IR measurements. Turbiscan optical analysis revealed that thermal and colloidal stabilities can be significantly improved depending on oil viscosity and chain length of the grafting agent. The formulations in the PAO65 oil remained highly stable (TSI < 1), even at 80 °C. Herein, we demonstrate the impact of hydrophobization degree on the tribological properties of the lubricants, which, importantly, could reach ultra-low friction coefficients, less than 0.02.
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Affiliation(s)
- M Z Saidi
- Laboratoire de Génie Chimique et Valorisation des Ressources, Faculté des Sciences et Techniques de Tanger, Université Abdelmalek Essâadi, BP 416 Tanger, Morocco
| | - A Pasc
- L2CM UMR CNRS 7053, Université de Lorraine, 54506 Vandoeuvre-lès-Nancy, France.
| | - C El Moujahid
- Laboratoire de Génie Chimique et Valorisation des Ressources, Faculté des Sciences et Techniques de Tanger, Université Abdelmalek Essâadi, BP 416 Tanger, Morocco
| | - N Canilho
- L2CM UMR CNRS 7053, Université de Lorraine, 54506 Vandoeuvre-lès-Nancy, France
| | - M Badawi
- LPCT UMR CNRS 7019, Université de Lorraine, 54506 Vandoeuvre-lès-Nancy, France
| | | | - A Celzard
- IJL UMR 7198 CNRS, Université de Lorraine, 88000 Epinal, France
| | - V Fierro
- IJL UMR 7198 CNRS, Université de Lorraine, 88000 Epinal, France
| | - R Peignier
- IJL UMR 7198 CNRS, Université de Lorraine, 54000 Nancy, France
| | - R Kouitat-Njiwa
- IJL UMR 7198 CNRS, Université de Lorraine, 54000 Nancy, France
| | - H Akram
- Laboratoire de Génie Chimique et Valorisation des Ressources, Faculté des Sciences et Techniques de Tanger, Université Abdelmalek Essâadi, BP 416 Tanger, Morocco.
| | - T Chafik
- Laboratoire de Génie Chimique et Valorisation des Ressources, Faculté des Sciences et Techniques de Tanger, Université Abdelmalek Essâadi, BP 416 Tanger, Morocco
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Abdeltawab MSA, Rifaie SA, Shoeib EY, El-Latif HAA, Badawi M, Salama WH, El-Aal AAA. Insights into the impact of Ivermectin on some protein aspects linked to Culex pipiens digestion and immunity. Parasitol Res 2019; 119:55-62. [DOI: 10.1007/s00436-019-06539-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 11/03/2019] [Indexed: 02/08/2023]
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Atteyah D, Badawi M. Niemann-pick disease type C-1 (NP-C1): Case series of three patients and literature review. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Badawi M. Treatable causes of hereditary ataxia: Cases and literature review. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Hessou EP, Kanhounnon WG, Rocca D, Monnier H, Vallières C, Lebègue S, Badawi M. Adsorption of NO, NO2, CO, H2O and CO2 over isolated monovalent cations in faujasite zeolite: a periodic DFT investigation. Theor Chem Acc 2018. [DOI: 10.1007/s00214-018-2373-2] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Hindawi S, Badawi M, Fouda F, Mallah B, Mallah B, Rajab H, Madani TA. Testing for HTLV 1 and HTLV 2 among blood donors in Western Saudi Arabia: prevalence and cost considerations. Transfus Med 2017; 28:60-64. [PMID: 28656665 DOI: 10.1111/tme.12440] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2017] [Revised: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 01/18/2023]
Abstract
BACKGROUND Screening all blood donors for human T-cell lymphotropic viruses 1 and 2 (HTLV 1 and HTLV 2) is mandatory in Saudi Arabia. The aim of this study is to evaluate the results and costs associated with the current testing policy for HTLV 1 and HTLV 2 in blood donors at King Abdulaziz University Hospital (KAUH), Jeddah. STUDY DESIGNS AND METHODS Donor-testing results from Blood Transfusion Services at KAUH were reviewed over a 10-year period, from January 2006 through December 2015. All donors were screened using chemiluminescent microparticle immunoassay. Reactive samples were then tested by Western blot for confirmation. Costs associated with testing were calculated. RESULTS Data of 107 419 donations in the study period were reviewed. Saudi nationals constituted 51 168 donors (47·6%). Of 107 419 blood donors tested for HTLV 1 and HTLV 2 antibody, and 95 (0·088%) donors were reactive to screening tests. None of the samples found to be reactive to screening tests was positive by Western blot. The average cost of testing was US$ 171 870 per year. CONCLUSION No donors were confirmed to have HTLV 1 and HTLV 2 in this cohort exceeding 100 000 donors. We propose changes to the policy mandating universal testing by replacing it with universal leukodepletion coupled with targeted screening to donors coming from endemic area or donors at risk. Such changes are expected to lead to a reduction of testing cost without affecting safety.
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Affiliation(s)
- S Hindawi
- Department of Haematology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - M Badawi
- Department of Haematology, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
| | - F Fouda
- Blood Transfusion Services, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - B Mallah
- Blood Transfusion Services, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - B Mallah
- Blood Transfusion Services, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - H Rajab
- Blood Transfusion Services, King Abdulaziz University Hospital, Jeddah, Saudi Arabia
| | - T A Madani
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia
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Saftawy EAE, El-Aal AAA, Badawi M, Attia SS, Abdelraouf A, Shoeib EY, Hassany M, Mohsen A, Afife AA, Gohar H, Badr MS. Research Note. One minute, intraoperative assessment of the viability of hydatid cysts using a simple reagent strip test. Helminthologia 2017; 54:157-164. [DOI: 10.1515/helm-2017-0020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/02/2023] Open
Abstract
Summary
The aim of the current work was to evaluate the possibility of using a rapid and simple reagent strip test to investigate the viability of hydatid cysts intraoperatively, via testing certain biochemical parameters. Thirty eight HCF samples were processed and examined by different methods for determining the viability status. Using the reagent strip test in the current study, the highest significant level of glucose was detected in HCF samples with the highest viability % at pH 7.5 and the lowest significant level of glucose was detected in HCF samples with the lowest viability % at pH 8.5, indicating a likely correlation between glucose concentration and the viability of PSs. On the contrary, protein was not detected in HCF containing viable PSs and was found to be higher in HCF containing non-viable PSs, denoting the possible degenerative processes in such PSs. Haemoglobin was found in trace amounts in all of our samples. In addition, the strip test detected bacterial contamination in 8 samples and biliary leakage in 7 samples. Our results suggest that the simple reagent strip test can assist in providing fast, uncomplicated primary data regarding the viability status of the hydatid cysts. Thus, it may aid the surgeons to make informed decisions for further management and appropriate follow up to minimise the risk of post-operative recurrence.
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Affiliation(s)
- E. A. El Saftawy
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo , Egypt
| | - A. A. Abd El-Aal
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo , Egypt
| | - M. Badawi
- Department of Pathology, National Research Institute, Giza , Egypt
| | - S. S. Attia
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo , Egypt
| | - A. Abdelraouf
- Department of Tropical Medicine, National Hepatology and Tropical Medicine Research Institute, Cairo , Egypt
| | - E. Y. Shoeib
- Department of Medical Parasitology, Faculty of Medicine, Cairo University, Cairo , Egypt
| | - M. Hassany
- Department of Tropical Medicine, National Hepatology and Tropical Medicine Research Institute, Cairo , Egypt
| | - A. Mohsen
- Department of Community Medicine, National Research Centre, Cairo , Egypt
| | - A. A. Afife
- Biomedical Sciences (BSc), The University of Manchester, Manchester , UK
| | - H. Gohar
- Department of Medical Microbiology, Faculty of Medicine, Cairo University, Cairo , Egypt
| | - M. S. Badr
- Department of Molecular Biology, Medical Research Centre, Faculty of Medicine, Ain Shams University, Cairo , Egypt
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Jabraoui H, Malki M, Hasnaoui A, Badawi M, Ouaskit S, Lebègue S, Vaills Y. Thermodynamic and structural properties of binary calcium silicate glasses: insights from molecular dynamics. Phys Chem Chem Phys 2017; 19:19083-19093. [DOI: 10.1039/c7cp03397d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The thermodynamic and structural properties of calcium-modified binary silicate glasses have been computed using molecular dynamics simulations.
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Affiliation(s)
- H. Jabraoui
- Laboratoire de Chimie et Physique – Approche Multi-Echelle des Milieux Complexes (LCP-A2MC, EA4632)
- Institut Jean Barriol FR2843 CNRS
- Université de Lorraine
- Rue Victor Demange
- 57500 Saint-Avold
| | - M. Malki
- Université d’Orléans
- CEMHTI – CNRS UPR 3079
- Avenue du Parc Floral
- BP 6749
- 45067 Orléans Cedex 2
| | - A. Hasnaoui
- LS3M
- Faculté Polydisciplinaire Khouribga
- Univ Hassan 1
- B.P.: 145
- 25000 Khouribga
| | - M. Badawi
- Laboratoire de Chimie et Physique – Approche Multi-Echelle des Milieux Complexes (LCP-A2MC, EA4632)
- Institut Jean Barriol FR2843 CNRS
- Université de Lorraine
- Rue Victor Demange
- 57500 Saint-Avold
| | - S. Ouaskit
- Laboratoire physique de la matière condensée
- Faculté des sciences Ben M'sik
- Université Hassan II de Casablanca
- Morocco
| | - S. Lebègue
- Laboratoire de Cristallographie
- Résonance Magnétique et Modélisations (CRM2, UMR CNRS 7036)
- Institut Jean Barriol
- Université de Lorraine
- BP 239
| | - Y. Vaills
- Université d’Orléans
- CEMHTI – CNRS UPR 3079
- Avenue du Parc Floral
- BP 6749
- 45067 Orléans Cedex 2
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Ewis M, Abd El-Latif K, Badawi M. Response of Maize (Zea mays L.) to Moisture Stress under Different Nitrogen Fertilization Levels. Journal of Soil Sciences and Agricultural Engineering 2016; 7:865-872. [DOI: 10.21608/jssae.2016.40487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Badawi M, Paul J, Cristol S, Payen E, Romero Y, Richard F, Brunet S, Lambert D, Portier X, Popov A, Kondratieva E, Goupil J, El Fallah J, Gilson J, Mariey L, Travert A, Maugé F. Effect of water on the stability of Mo and CoMo hydrodeoxygenation catalysts: A combined experimental and DFT study. J Catal 2011. [DOI: 10.1016/j.jcat.2011.06.006] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Badawi M, Vivier L, Pérot G, Duprez D. Promoting effect of cobalt and nickel on the activity of hydrotreating catalysts in hydrogenation and isomerization of olefins. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.molcata.2008.07.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Zayed, B, El-Ekhtyar A, El Abd A, Badawi M. RESPONSE OF HYBRID AND INBRED RICE VARIETIES TO VARIOUS NITROGEN LEVELS UNDER SALINE SOIL CONDITIONS. Journal of Plant Production 2006; 31:7497-7509. [DOI: 10.21608/jpp.2006.236409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Badawi M, Bessis N, Bessis G. On the introduction of the rotation-vibration coupling in diatomic molecules and the factorization method. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3700/5/8/004] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Ismail EA, Shabani IS, Badawi M, Sanaa H, Madi S, Al-Tawari A, Nadi H, Zaki M, Al-saleh Q. An epidemiologic, clinical, and therapeutic study of childhood Guillain-Barré syndrome in Kuwait: is it related to the oral polio vaccine? J Child Neurol 1998; 13:488-92. [PMID: 9796754 DOI: 10.1177/088307389801301004] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
We studied Guillain-Barré syndrome, affecting children 12 years old or less, throughout Kuwait, in the period between January 1, 1992, and March 31, 1997. Nineteen children had the diagnostic criteria of Guillain-Barré syndrome, with an overall annual incidence rate of 0.95/100,000 population at risk. Female patients outnumbered male patients with a sex ratio of 1.4:1. There was a clustering of cases in winter and spring and in the year 1996. The disease symptoms were relatively severe in our patients because only 16% (3 of 19) of them were able to walk at the height of their illness, whereas the rest were bed or chair bound or needed assisted ventilation. Two patients had the electrodiagnostic features of axonal neuropathy and both had residual deficits on follow-up, whereas the rest recovered fully. All the patients received intravenous immunoglobulin. The mean time to walk unaided was 23.5 days (range, 2-84 days) after intravenous immunoglobulin and excluding the two patients with axonal neuropathy, and full recovery was achieved in a mean time of 103 days (range, 30-300 days). Contrary to previous studies, we found no correlation between oral polio vaccine administration and Guillain-Barré syndrome in 2 successive years (1995 and 1996) during a nationwide campaign targeting children less than 5 years old.
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Affiliation(s)
- E A Ismail
- Department of Pediatrics, Farwaniya Hospital, Kuwait
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Gershon RR, Vlahov D, Escamilla-Cejudo JA, Badawi M, McDiarmid M, Karkashian C, Grimes M, Comstock GW. Tuberculosis risk in funeral home employees. J Occup Environ Med 1998; 40:497-503. [PMID: 9604188 DOI: 10.1097/00043764-199805000-00014] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In order to estimate the risk of tuberculosis infection among employees in the funeral service industry, we conducted a risk-assessment study of a convenience sample of funeral home employees. Study participants completed a risk-assessment questionnaire and underwent tuberculin skin testing. Of 864 employees tested, 101 (11.7%) had a reactive tuberculin skin test. Reactivity to the tuberculin skin test was significantly associated with job category; funeral home employees with a present or past history of embalming deceased-human remains were twice as likely to be reactive as were non-embalming personnel (14.9% versus 7.2%, P < 0.01). Reactivity was also associated with age, gender, race, past history of close contact with a person diagnosed with tuberculosis, and work history. After controlling for age and other factors, tuberculin reactivity was found to be associated in embalming personnel with the number of years spent performing embalmings (> or = 20), and, in non-embalming personnel, with a history of close contact with infected individuals. Based on these results, it is recommended that funeral home employees who routinely embalm cadavers undergo annual tuberculin skin testing, receive initial training on tuberculosis prevention, and wear respiratory protection when preparing known tuberculosis cases.
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Affiliation(s)
- R R Gershon
- Department of Environmental Health Science, Johns Hopkins University School of Public Health, Baltimore, MD 21205, USA
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Abstract
OBJECTIVE The study examined differences in the use of mental health services by persons living in different types of households. METHODS Data were obtained from the Epidemiologic Catchment Area (ECA) survey, a multistage probability sampling procedure of households in five U.S cities conducted in 1981-1984. Data from 12,417 persons living in four of the five ECA sites (Baltimore, St. Louis, Durham, North Carolina, and Los Angeles) were classified according to household categories used by the U.S. Bureau of the Census. Logistic regression analysis was used to examine the relationship of mental health service use to household type, relationship of survey respondent to head of household, household income and size, number of children in the household, ECA site, presence of mental disorders, and sociodemographic factors. RESULTS Use of mental health services varied by type of household but not by individual within the same household. Persons in female-headed families and persons living alone had the highest use of mental health services, even after other variables were controlled. CONCLUSIONS The findings highlight the need for outreach efforts to determine needs and preferences for health, mental health, and social services by persons in various households, especially persons in female-headed families and persons living alone.
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Affiliation(s)
- M Badawi
- Department of Mental Hygiene, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
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Abstract
OBJECTIVE The concepts of prodrome and precursor are used to show how epidemiologic data on age at onset can be used in timing preventive interventions and selecting target populations. METHODS Data concerning onset of DSM-III major depression and panic disorder were taken from the Epidemiologic Catchment Area Program. Cumulative distributions of ages at onset of diagnosis and onset of precursors are presented, and the concept of attributable risk is introduced. Attributable risk is the maximum proportion of cases that would be prevented if an intervention were 100% effective in eliminating a specific precursor. RESULTS Illustrative results for depression and panic are presented. Precursors vary in the degree to which they predict onset of the full disorder; 2 or more weeks of sad mood in the year before full-blown depression is a better predictor (relative odds, 7.0) than weight loss or gain (relative odds, 3.0). The formula for population attributable risk was applied to the precursor relative risks and prevalences to estimate the potential success of interventions for specific precursors in preventing the disorder. The precursor attributable risks indicate that sleep problems would identify 47% of the new cases of major depression occurring in the following year, and the question "Are you a nervous person?" would identify 60% of persons with onset of panic disorder in the following year. CONCLUSIONS This conceptual framework links the early natural history of disorders with the search for syndromes. Knowledge of precursor prevalence and attributable risk, combined with other host characteristics and environmental risk factors, can be used in screening and prevention.
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Affiliation(s)
- W W Eaton
- Department of Mental Hygiene, School of Hygiene and Public Health, Johns Hopkins University, Baltimore, MD 21205, USA
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Soundararajan S, Badawi M, Kohlrust CM, Hageman JH. Boronic acids for affinity chromatography: spectral methods for determinations of ionization and diol-binding constants. Anal Biochem 1989; 178:125-34. [PMID: 2729565 DOI: 10.1016/0003-2697(89)90367-9] [Citation(s) in RCA: 85] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Arylboronic acids attached to solid matrices have proved useful for the diol-specific chromatography of biomolecules and affinity purification of enzymes by exchangeable-ligand chromatography. The latter use has been limited by the intrinsic ionization constant (pKa approximately 9) of the most common commercial products. The synthesis of several arylboronic acids with ionization constants near neutrality are described, and the application of a new general, spectral-difference method for determining acid ionization constants and formation constants with fructose is developed. In particular 4-(N-methyl) carboxamido-benzeneboronic acid was found to have a pKa of 7.86 and a formation constant with D-fructose of 8600. It was stable toward acid or base hydrolysis. We suggest that 4-carboxybenzeneboronic acid might be useful for preparing matrices for enzyme affinity chromatography.
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Affiliation(s)
- S Soundararajan
- Department of Chemistry, New Mexico State University, Las Cruces 88003
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Badawi M. The role of the hospital social worker. Nurs Times 1982; 78:1601-3. [PMID: 6923264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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31
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Aidara D, Badawi M, Tahiri-Zagret C, Robyn C. Changes in concentrations of serum prolactin, FSH, oestradiol and progesterone and of the sex skin during the menstrual cycle in the mangabey monkey (Cercocebus atys lunulatus). J Reprod Fertil 1981; 62:475-81. [PMID: 6788948 DOI: 10.1530/jrf.0.0620475] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Daily blood samples were collected from 6 regularly menstruating mangabey monkeys. Because serum LH could not be measured by a radioimmunoassay for human LH, Day 0 was taken as the day of maximum serum oestradiol concentration. The hormone patterns were very similar to those of other cercopithecids and women. However, the peak of serum progesterone was lower in mangabeys than in women. There was no distinct peak of serum oestradiol during the luteal phase of mangabeys but the average levels were higher than during the early follicular phase, a pattern more similar to that in other non-human primates than in women. Serum prolactin rose by about 50%, 48 h after the serum oestradiol peak, then declined during the mid-luteal phase before rising at the end of the cycle. Changes in the sex skin dimensions followed the same pattern as the serum oestradiol concentrations.
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Abstract
The prolactin response to 200 microgram thyrotropin-releasing hormone (TRH) IV was studied in seven patients with diabetic ketoacidosis, at the start of the treatment, and again, in the same patients, five days after recovery, when the diabetes was well controlled. Normal basal prolactin concentrations and prolactin responses to TRH were found in both situations. There was no correlation between basal prolactin concentrations, or magnitude of prolactin responses to TRH, and any of the metabolic variables measured. These findings do no suggest a role for prolactin in the development of diabetic ketoacidosis.
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Naeije R, Golstein J, Zegers De Beyl D, Linkowski P, Mendlewicz J, Copinschi G, Badawi M, Leclercq R, L'Hermite M, Vanhaelst L. Thyrotrophin, prolactin and growth hormone responses to TRH in barbiturate coma and in depression. Clin Endocrinol (Oxf) 1978; 9:49-58. [PMID: 98247 DOI: 10.1111/j.1365-2265.1978.tb03571.x] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The effects of 200 microgram thyrotrophin-releasing hormone (TRH) i.v. on thyrotrophin (TSH), prolactin (PRL), growth hormone (GH) and triiodothyronine (T3) were studied in eight patients with barbiturate coma due to attempted suicide, in the same patients after recovery, in eight depressive patients and in eight normal controls. The patients with barbiturate coma presented normal basal TSH and PRL, elevated basal GH and normal PRL but blunted TSH responses to TRH; their GH concentrations varied widely without consistent relation to TRH administration. The same patients after recovery from coma presented normal TSH and PRL, slightly elevated basal GH, and normal PRL but blunted TSH responses to TRH; in four of these patients, a clear-cut rise in GH (i.e. more than 10 ng/ml) occurred after TRH administration. The depressive patients presented normal basal TSH and PRL, slightly elevated basal GH, and normal PRL but blunted TSH responses to TRH; in four of these patients, a moderated rise in GH (less than 10 ng/ml) occurred after TRH administration. The increment in T3 concentrations 120 min after TRH was found reduced in the comatose patients only. Basal cortisol was measured in all the subjects and found elevated in the comatose patients only. It is concluded that the abnormal TSH and GH responses to TRH observed in patients with barbiturate coma are more likely related to depressive illness than to an effect of barbiturates at the pituitary level. Barbiturates might affect thyroid secretion.
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Badawi M, Van Exter C, Delogne-Desnoeck J, Van Meenen F, Robyn C. Cord serum prolactin in relation to the time of the day, the sex of the neonate and the birth weight. Acta Endocrinol (Copenh) 1978; 87:241-7. [PMID: 580129 DOI: 10.1530/acta.0.0870241] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Serum prolactin was measured in 581 blood samples collected immediately after birth from 563 single new-born and from 9 pairs of twins. Cord serum prolactin is high at birth: the mean level is some 5 times higher than in adults. There is no sex difference in cord serum prolactin concentration in the neonate. Mean serum prolactin is significantly higher at 1.00 and 2.00 a.m. Thus a circadian periodicity in serum prolactin concentration seems to appear already during foetal life well before the organization of sleep rhythm. Cord serum prolactin increases with birth weight ranging from 1500 g to 3500 g. Thus, the control of levels of circulating prolactin changes during foetal life resulting in a progressive increase starting from mid-pregnancy. Mean cord serum prolactin at birth is lower in twins than in single new-borns. There is no significant difference in serum prolactin between the first and the second twin.
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Schneider E, Ziegler B, Maxion H, Badawi M. [The influence of sulpirid on sleep. Results of polygraphic night sleep recordings (author's transl)]. Pharmakopsychiatr Neuropsychopharmakol 1975; 8:90-8. [PMID: 184480 DOI: 10.1055/s-0028-1094447] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Short and long term effects of sulpirid on the sleep EEG in humans were investigated in 8 patients aged 20-68 years (average 40.4) suffering from autonomic instability. In each patient seven polygraphic night sleep recording were performed. After an adaption night and two nights without medication each subject got 200-400 mg sulpirid i.m. for two days and then 300-600 mg orally for a three-week period. In both groups the short-term application of sulpirid caused a reduction of waking periods and a slight decrease of stage 3, while stage 2 was increased. In psychotic patients the long-term orally administered substance was followed by an increase of deep synchronous sleep (stage 4). As this alteration of sleep couldn't be revealed in the control group, we consider this finding as a result of the improvement of psychosis. In the patient group the amount of REM sleep was augmented during the short-term application as well as during the long-term application, where, as in the control group the amount of REM sleep decreased when sulpirid was given orally for three weeks. This result is discussed in comparison with the properties of the tricyclic antidepressant drugs and monoamine oxidase inhibitors and the clinical effects of sulpiride.
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Schneider E, Ziegler B, Maxion H, Badawi M. [Long- and short-term effects of sulpiride on sleep-EEG of man]. Arzneimittelforschung 1974; 24:990-3. [PMID: 4368177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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