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Kaynar ÜH, Oglakci M, Bulcar K, Benourdja S, Bakr M, Ayvacikli M, Canimoglu A, Topaksu M, Can N. Comparison of thermoluminescence characteristics of undoped and europium doped YAl3(BO3)4 phosphor synthesized by combustion method: Anomalous heating rate, dose response and kinetic analyses. Radiat Phys Chem Oxf Engl 1993 2022. [DOI: 10.1016/j.radphyschem.2022.110657] [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: 11/25/2022]
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2
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Alazawi S, Elomri H, Taha R, Bakr M, Abdelhamid MT, Szabados L, Yassin M, Sabah HE, Aboudi K, Ellahie A, Fadul A, Gameil A, Al Battah A, Fernyhough LJ. Neurolymphomatosis of the median nerve, optic nerve, L4 spinal nerve root and cauda equina in patients with B-cell malignancies: a case series. J Med Case Rep 2021; 15:133. [PMID: 33766128 PMCID: PMC7995761 DOI: 10.1186/s13256-021-02714-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 02/02/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Neurolymphomatosis is rare. Neoplastic lymphocytes are seen to invade nerves (cranial or peripheral), nerve roots or other related structures in patients with hematological malignancy. It is a separate entity from central nervous system lymphoma. Neurolymphomatosis has most commonly been described in association with B-cell non-Hodgkin lymphoma. Neurolymphomatosis in the context of Burkitt lymphoma and the post-renal transplant setting has not been described before. CASE REPORTS We report for the first time in the Arabian Gulf countries and nearby Arab states four cases of neurolymphomatosis (one Asian, and the other 3 are from Arabic nationals) occurring between 2012 and 2017 involving the median nerve, optic nerve, nerve root and cauda equina in patients with Burkitt lymphoma, Philadelphia chromosome-positive B-cell acute lymphoblastic leukemia and diffuse large B-cell lymphoma. CONCLUSIONS Neurolymphomatosis is rare and can be difficult to diagnose by biopsy but reliably confirmed by a combined imaging approach. Prior treatment with high-dose dexamethasone might suppress 18F-fluorodeoxyglucose (FDG) activity and decrease the sensitivity of positron emission tomography/computed tomography (PET/CT). The prognosis is generally poor but using high-dose methotrexate as well as high-dose chemotherapy and autologous stem cell transplantation may be an effective way to treat neurolymphomatosis.
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Affiliation(s)
- S Alazawi
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar.
- Weill Cornell Medicine, Doha, Qatar.
| | - H Elomri
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - R Taha
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - M Bakr
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - M T Abdelhamid
- Department of Radiology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
- Medicine, Mansoura University, Mansoura, Egypt
| | - L Szabados
- Department of Radiology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - M Yassin
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - H El Sabah
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - K Aboudi
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - A Ellahie
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - A Fadul
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - A Gameil
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
- Weill Cornell Medicine, Doha, Qatar
| | - A Al Battah
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
| | - L J Fernyhough
- Department of Hematology/Oncology, National Center for Cancer Care and Research, Hamad Medical Corporation, Doha, Qatar
- Weill Cornell Medicine, Doha, Qatar
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Ayvacikli M, Kaynar ÜH, Karabulut Y, Canimoglu A, Bakr M, Akca S, Can N. Synthesis and photoluminescence characteristics of Dy incorporated MoO 3 phosphor: Suppression concentration quenching. Appl Radiat Isot 2020; 164:109321. [PMID: 32819496 DOI: 10.1016/j.apradiso.2020.109321] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 03/03/2020] [Revised: 06/25/2020] [Accepted: 06/30/2020] [Indexed: 11/15/2022]
Abstract
A series of MoO3:Dy3+ phosphors have been synthesized via the gel-combustion method. The X-ray and photoluminescence (PL) emission spectra were employed to characterize the obtained phosphors. The prepared samples were characterized through XRD measurements and exhibited that Dy3+ ions can be successfully incorporated into the host material. The PL emission bands of Dy3+ doped MoO3 were observed at 486 nm, 574 nm and 666 nm which are assigned to the transitions of 4F9/2 → 6H15/2, 4F9/2 → 6H13/2 and 4F9/2 → 6H11/2, respectively. Concentration quenching were largely taken into consideration as one of the crucial aspects limiting the application range of phosphors in today's modern world. An abnormal thermal quenching dependence was reported when Dy3+ ions were incorporated into MoO3 host matrix. In order to understand the origin of this beneficial behaviour, energy transfer processes occurring via radiative and nonradiative mechanisms were investigated to elucidate this suppression of the concentration quenching.
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Affiliation(s)
- M Ayvacikli
- Manisa Celal Bayar University, Hasan Ferdi Turgutlu Technology Faculty, Mechatronics Engineering, Turgutlu-Manisa, Turkey
| | - Ümit H Kaynar
- Bakırcay University, Faculty of Engineering and Architecture, Department of Fundamental Sciences, Menemen, Izmir, Turkey
| | - Y Karabulut
- Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye-Manisa, 45010, Turkey
| | - A Canimoglu
- Nigde Omer Halisdemir University, Faculty of Arts and Sciences, Physics Department, Nigde, Turkey
| | - M Bakr
- Jazan University, Physics Department, P.O. Box 114, 45142, Jazan, Saudi Arabia
| | - S Akca
- Physics Department, Cukurova University, Arts-Sciences Faculty, 01330, Adana, Turkey
| | - N Can
- Department of Physics, Manisa Celal Bayar University, Faculty of Arts and Sciences, Muradiye-Manisa, 45010, Turkey; Jazan University, Physics Department, P.O. Box 114, 45142, Jazan, Saudi Arabia.
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Heshmatzadeh Behzadi A, Velasco N, Bakr M, Asif A, Prince M, Jain S, Zahid U. Abstract No. 488 Trimetazidine in the prevention of contrast-induced nephropathy in patients with renal insufficiency undergoing percutaneous coronary intervention: a systematic review and meta-analysis. J Vasc Interv Radiol 2020. [DOI: 10.1016/j.jvir.2019.12.549] [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] Open
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Akca S, Oglakci M, Portakal Z, Kucuk N, Bakr M, Topaksu M, Can N. Thermoluminescence analysis of beta irradiated ZnB2O4: Pr3+ phosphors synthesized by a wet-chemical method. Radiat Phys Chem Oxf Engl 1993 2019. [DOI: 10.1016/j.radphyschem.2019.03.033] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Abstract
BACKGROUND Dental caries in children is a major public health problem worldwide, with a multitude of determinants acting upon children to different degrees in different communities. The objective of this study was to determine maternal, environmental, and intraoral indicators of dental caries experience in a sample of 6- to 7-y-old children in South East Queensland, Australia. METHODS A total of 174 mother-child dyads were recruited for this cross-sectional study from the Griffith University Environments for Healthy Living birth cohort study. Maternal education, employment status, and prepregnancy body mass index were maternal indicators, and annual household income was taken as a proxy for environmental indicators. These were collected as baseline data of the study. Clinical data on children's dental caries experience, saliva characteristics of buffering capacity, stimulated flow rate, and colony-forming units per milliliter of salivary mutans streptococci were collected for the oral health substudy. Univariate analysis was performed with 1-way analysis of variance and chi-square tests. Caries experience was the outcome, which was classified into 4 categories based on the number of carious tooth surfaces. Ordinal logistic regression was used to explore the association of risk indicators with caries experience. RESULTS Age (P = 0.021), low salivary buffering capacity (P = 0.001), reduced levels of salivary flow rate (P = 0.011), past caries experience (P = 0.001), low annual household income; <$30,000 (P = 0.050) and <$60,000 (P = 0.033) and maternal employment status (P = 0.043) were associated with high levels of dental caries. CONCLUSION These data support the evidence of associations between maternal, environmental, and children's intraoral characteristics and caries experience among children in a typical Western industrialized country. All of these need to be considered in preventative strategies within families and communities. KNOWLEDGE TRANSFER STATEMENT The results of this study can be used by clinicians, epidemiologists, and policy makers to identify children who are at risk of developing dental caries. With consideration of costs for treatment for the disease, this information could be used to plan cost-effective and patient-centered preventive care.
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Affiliation(s)
- S Fernando
- Menzies Health Institute Queensland, Griffith University, Queensland, Australia.,School of Dentistry and Oral Health, Griffith University, Queensland, Australia
| | - S K Tadakamadla
- School of Human Services and Social Work, Griffith University, Queensland, Australia
| | - M Bakr
- Menzies Health Institute Queensland, Griffith University, Queensland, Australia.,School of Dentistry and Oral Health, Griffith University, Queensland, Australia
| | - P A Scuffham
- Menzies Health Institute Queensland, Griffith University, Queensland, Australia.,School of Medicine, Griffith University, Queensland, Australia
| | - N W Johnson
- Menzies Health Institute Queensland, Griffith University, Queensland, Australia.,School of Dentistry and Oral Health, Griffith University, Queensland, Australia.,Dental Institute, King's College London, London, UK
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Merhi M, Jalis M, Sivaraman S, Inchakalody V, Raza A, Bakr M, Pittari G, Uddin S, Knuth A, Dermime S. PD-L1 blockade during ex vivo expansion of virus-specific T cells for the treatment of infections after allogeneic hematopoietic stem cell transplantation modulates the phenotype and functional activity of T cells. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy485.013] [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: 11/13/2022] Open
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Ayas M, Nassar A, Hamidieh AA, Kharfan-Dabaja M, Othman TB, Elhaddad A, Seraihy A, Hussain F, Alimoghaddam K, Ladeb S, Fahmy O, Bazarbachi A, Mohamed SY, Bakr M, Korthof E, Aljurf M, Ghavamzadeh A. Reduced intensity conditioning is effective for hematopoietic SCT in dyskeratosis congenita-related BM failure. Bone Marrow Transplant 2013; 48:1168-72. [PMID: 23542225 DOI: 10.1038/bmt.2013.35] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Revised: 12/04/2012] [Accepted: 01/30/2013] [Indexed: 02/08/2023]
Abstract
BM failure (BMF) is a major and frequent complication of dyskeratosis congenita (DKC). Allogeneic hematopoietic SCT (allo-HSCT) represents the only curative treatment for BMF associated with this condition. Transplant-related morbidity/mortality is common especially after myeloablative conditioning regimens. Herein, we report nine cases of patients with DKC who received an allo-SCT at five different member centers within the Eastern Mediterranean Blood and Marrow Transplantation Registry. Between October 1992 and February 2011, nine DKC patients (male, 7 and female, 2), with a median age at transplantation of 19.1 (4.9-31.1) years, underwent an allo-HSCT from HLA-matched, morphologically normal-related donors (100%). Preparative regimens varied according to different centers, but was reduced intensity conditioning (RIC) in eight patients. Graft source was unstimulated BM in five cases (56%) and G-CSF-mobilized PBSCs in four (44%) cases. The median stem cell dose was 6.79 (2.06-12.4) × 10(6) cells/kg body weight. GVHD prophylaxis consisted of CsA in all nine cases; MTX or mycophenolate mofetil were added in five (56%) and two (22%) cases, respectively. Anti-thymocyte globulin was administered at various doses and scheduled in four (44%) cases. Median time-to-neutrophil engraftment was 21 (17-27) days. In one case, late graft failure was noted at 10.4 months post allo-HSCT. Only one patient developed grade II acute GVHD (11%). Extensive chronic GVHD was reported in one case, whereas limited chronic GVHD occurred in another four cases. At a median follow-up of 61 (0.8-212) months, seven (78%) patients were still alive and transfusion independent. One patient died of metastatic gastric adenocarcinoma and graft failure was the cause of death in another patient. This study suggests that RIC preparative regimens are successful in inducing hematopoietic cell engraftment in patients with BMF from DKC. Owing to the limited sample size, the use of registry data and heterogeneity of preparative as well as GVHD prophylaxis regimens reported in this series, we are unable to recommend a particular regimen to be considered as the standard for patients with this disease.
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Affiliation(s)
- M Ayas
- Adult Hematopoietic Stem Cell Transplantation Program, Oncology Centre, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
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Driza N, Blanco-Canosa S, Bakr M, Soltan S, Khalid M, Mustafa L, Kawashima K, Christiani G, Habermeier HU, Khaliullin G, Ulrich C, Le Tacon M, Keimer B. Long-range transfer of electron-phonon coupling in oxide superlattices. Nat Mater 2012; 11:675-681. [PMID: 22797829 DOI: 10.1038/nmat3378] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2012] [Accepted: 06/08/2012] [Indexed: 06/01/2023]
Abstract
The electron-phonon interaction is of central importance for the electrical and thermal properties of solids, and its influence on superconductivity, colossal magnetoresistance and other many-body phenomena in correlated-electron materials is the subject of intense research at present. However, the non-local nature of the interactions between valence electrons and lattice ions, often compounded by a plethora of vibrational modes, presents formidable challenges for attempts to experimentally control and theoretically describe the physical properties of complex materials. Here we report a Raman scattering study of the lattice dynamics in superlattices of the high-temperature superconductor YBa(2)Cu(3)O(7) (YBCO) and the colossal-magnetoresistance compound La(2/3)Ca(1/3)MnO(3) that suggests a new approach to this problem. We find that a rotational mode of the MnO(6) octahedra in La(2/3)Ca(1/3)MnO(3) experiences pronounced superconductivity-induced line-shape anomalies, which scale linearly with the thickness of the YBCO layers over a remarkably long range of several tens of nanometres. The transfer of the electron-phonon coupling between superlattice layers can be understood as a consequence of long-range Coulomb forces in conjunction with an orbital reconstruction at the interface. The superlattice geometry thus provides new opportunities for controlled modification of the electron-phonon interaction in complex materials.
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Affiliation(s)
- N Driza
- Max-Planck-Institut für Festkörperforschung, Heisenbergstraße 1, D-70569 Stuttgart, Germany
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10
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Li Y, Le Tacon M, Bakr M, Terrade D, Manske D, Hackl R, Ji L, Chan MK, Barišić N, Zhao X, Greven M, Keimer B. Feedback effect on high-energy magnetic fluctuations in the model high-temperature superconductor HgBa2CuO(4+δ) observed by electronic Raman scattering. Phys Rev Lett 2012; 108:227003. [PMID: 23003643 DOI: 10.1103/physrevlett.108.227003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Indexed: 06/01/2023]
Abstract
We use electronic Raman scattering to study the model single-layer cuprate superconductor HgBa(2)CuO(4+δ). In an overdoped sample, we observe a pronounced amplitude enhancement of a high-energy peak related to two-magnon excitations in insulating cuprates upon cooling below the critical temperature T(c). This effect is accompanied by the appearance of the superconducting gap and a pairing peak above the gap in the Raman spectrum, and it can be understood as a hitherto-undetected feedback effect on the high-energy magnetic fluctuations due to the Cooper pairing interaction. This implies a direct involvement of the high-energy magnetic fluctuations in the pairing mechanism. All of these effects occur already above T(c) in two underdoped samples, demonstrating a related feedback mechanism associated with the pseudogap.
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Affiliation(s)
- Yuan Li
- Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany.
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11
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Puvanachandra P, Hoe C, El-Sayed HF, Saad R, Al-Gasseer N, Bakr M, Hyder AA. Road traffic injuries and data systems in Egypt: addressing the challenges. Traffic Inj Prev 2012; 13 Suppl 1:44-56. [PMID: 22414128 DOI: 10.1080/15389588.2011.639417] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE Road traffic injuries (RTIs) are a major cause of global mortality and morbidity, killing approximately 1.3 million people and injuring 20 to 50 million each year. The significance of this public health threat is most pronounced in low- and middle-income countries where 90 percent of the world's road traffic-related fatalities take place. Current estimates for Egypt show a road traffic fatality rate of 42 deaths per 100,000 population-one of the highest in the Eastern Mediterranean Region. RTIs are also responsible for 1.8 percent of all deaths and 2.4 percent of all disability-adjusted life years (DALYs) lost in the country. Despite this, studies surrounding this topic are scarce, and reliable data are limited. The overall goal of this article is to define the health impact of RTIs in Egypt and to identify the strengths and weaknesses of each data source for the purpose of improving the current RTI data systems. METHODS A 2-pronged approach was undertaken to assess the burden of RTIs in Egypt. First, a thorough literature review was performed using PubMed, Embase, ISIS Web of Knowledge, and Scopus databases. Articles pertaining to Egypt and road traffic injuries were selected for screening. With assistance from Egyptian colleagues, a comprehensive exploration of data sources pertaining to RTIs in Egypt was undertaken and secondary data from these sources were procured for analysis. RESULTS The literature review yielded a total of 20 studies, of which 6 were multi-country and 5 were hospital-based studies. None examined risk factors such as speeding, alcohol, or seat belt use. Secondary data sources were acquired from national hospital-based injury surveillance; a community-based health survey; pre-hospital injury surveillance; the Ministry of Transport; the General Authority for Roads, Bridges and Land Transport; death certificates; and the central agency for public motorization and statistics. Risk factor data are also limited from these sources. CONCLUSION The results of this article clearly highlight the significant burden that road traffic injuries pose on the health of the Egyptian population. The hospital-based injury surveillance system that has been established in the country and the use of International Classification of Diseases (ICD-10) coding brings the system very closely in line with international guidelines. There is, however, some considerable room for improvement, including the need to extend the coverage of the surveillance system, the inclusion of injury severity scores and disability indicators, and standardization of the sometimes rather disparate sources from various sectors in order to maximally capture the true burden of RTIs.
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Affiliation(s)
- P Puvanachandra
- International Injury Research Unit, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland 21205, USA.
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12
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Raichle M, Reznik D, Lamago D, Heid R, Li Y, Bakr M, Ulrich C, Hinkov V, Hradil K, Lin CT, Keimer B. Highly anisotropic anomaly in the dispersion of the copper-oxygen bond-bending phonon in superconducting YBa2Cu3O7 from inelastic neutron scattering. Phys Rev Lett 2011; 107:177004. [PMID: 22107567 DOI: 10.1103/physrevlett.107.177004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Indexed: 05/31/2023]
Abstract
Motivated by predictions of a substantial contribution of the "buckling" vibration of the CuO(2) layers to d-wave superconductivity in the cuprates, we have performed an inelastic neutron scattering study of this phonon in an array of untwinned crystals of YBa(2)Cu(3)O(7). The data reveal a pronounced softening of the phonon at the in-plane wave vector q=(0,0.3) upon cooling below ~105 K, but no corresponding anomaly at q=(0.3,0). Based on the observed in-plane anisotropy, we argue that the electron-phonon interaction responsible for this anomaly supports an electronic instability associated with a uniaxial charge-density modulation and does not mediate d-wave superconductivity.
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Affiliation(s)
- M Raichle
- Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany
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Ali M, Ismail I, Metawea M, Bakr M, Rashwan H. MP-01.05: Sexual dysfunction in patients with LUTS due to benign prostatic enlargement. Urology 2010. [DOI: 10.1016/j.urology.2010.07.349] [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: 10/19/2022]
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Ismail I, Ali M, Metawea M, Bakr M, Rashwan H. UP-1.02: Urinary incontinence in patients with symptomatic benign prostatic enlargement: features and impact on sexual dysfunction. Urology 2010. [DOI: 10.1016/j.urology.2010.07.135] [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: 11/25/2022]
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Bakr M, Szymański K, Senyshyn A, Parzych G, Dobrzynski L, Fuess H. Mössbauer and neutron diffraction study of polycrystalline GaFeO 3. Acta Crystallogr A 2010. [DOI: 10.1107/s0108767310097783] [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: 11/11/2022] Open
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Bakr M, Szymański K, Senyshyn A, Parzych G, Dobrzynski L, Fuess H. Mössbauer and neutron diffraction study of polycrystalline GaFeO 3. Acta Crystallogr A 2010. [DOI: 10.1107/s0108767310092986] [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: 11/10/2022] Open
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17
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Bakr M, Senyshyn A, Wang H, Parzych G, Dobrzynski L, Szymański K, Fuess H. Structural, magnetic and electric properties of GaFe 1−xMn xO 3. Acta Crystallogr A 2009. [DOI: 10.1107/s0108767309098663] [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: 11/10/2022] Open
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18
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Bakr M. Living-donor renal transplantation: 25-year Mansoura experience. Transplant Proc 2002; 34:2070-2. [PMID: 12270317 DOI: 10.1016/s0041-1345(02)02855-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- M Bakr
- Urology and Nephrology Center, Mansoura, Egypt
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Stupp R, Bodmer A, Duvoisin B, Bauer J, Perey L, Bakr M, Ketterer N, Leyvraz S. Is cisplatin required for the treatment of non-small-cell lung cancer? Experience and preliminary results of a phase I/II trial with topotecan and vinorelbine. Oncology 2002; 61 Suppl 1:35-41. [PMID: 11598413 DOI: 10.1159/000055390] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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: 11/19/2022]
Abstract
Platinum-based chemotherapy is considered standard treatment for advanced non-small-cell lung cancer (NSCLC). However, toxicity of most platinum-based regimens is substantial and requires close monitoring and supportive care. Over the past decade, paclitaxel, docetaxel, vinorelbine, gemcitabine, irinotecan, and topotecan have been introduced into the clinic. These newer agents have shown promising activity against NSCLC with a favorable toxicity profile as single agents. For patients with metastatic NSCLC, palliation is the main goal of therapy. Therefore, treatment should be easy to administer on an outpatient basis. We explored a novel combination therapy avoiding platinum. Patients with recurrent or metastatic NSCLC were treated with intravenous (i.v.) topotecan (0.5-1.0 mg/m(2)/day x 5) and i.v. vinorelbine (20-30 mg/m(2)/day on day 1 and day 5) in 21-day cycles. Dose-limiting toxicity (DLT) was defined separately with or without the addition of granulocyte colony-stimulating factor (G-CSF) support. Twenty-nine patients have been enrolled to date. At i.v. topotecan doses of 0.75-1.0 mg/m(2)/day and i.v. vinorelbine of 25 mg/m(2)/day, neutropenia was frequent but of short duration (<7 days). The DLT of i.v. topotecan (0.85 mg/m(2)) in the absence of G-CSF support was based on myelosuppression with neutropenic fever. With the addition of G-CSF, a DLT has not been reached. Nonhematologic toxicities included mild to moderate fatigue and constipation. An overall clinical response rate of 42% was achieved, with responses noted at all dose levels. At a short median follow-up of 15 months, the median survival for all patients is 13 months. In conclusion, the combination regimen of topotecan and vinorelbine is feasible for outpatient administration and is well tolerated with less toxicity than platinum-based regimens. Preliminary response data demonstrate good tumor activity, suggesting that this regimen could make an excellent palliative treatment for advanced NSCLC.
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Affiliation(s)
- R Stupp
- Multidisciplinary Oncology Center, University Hospital CHUV, Lausanne, Switzerland.
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