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Hartwell MJ, Özbek U, Holler E, Renteria AS, Major-Monfried H, Reddy P, Aziz M, Hogan WJ, Ayuk F, Efebera YA, Hexner EO, Bunworasate U, Qayed M, Ordemann R, Wölfl M, Mielke S, Pawarode A, Chen YB, Devine S, Harris AC, Jagasia M, Kitko CL, Litzow MR, Kröger N, Locatelli F, Morales G, Nakamura R, Reshef R, Rösler W, Weber D, Wudhikarn K, Yanik GA, Levine JE, Ferrara JL. An early-biomarker algorithm predicts lethal graft-versus-host disease and survival. JCI Insight 2017; 2:e89798. [PMID: 28194439 DOI: 10.1172/jci.insight.89798] [Citation(s) in RCA: 147] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND. No laboratory test can predict the risk of nonrelapse mortality (NRM) or severe graft-versus-host disease (GVHD) after hematopoietic cellular transplantation (HCT) prior to the onset of GVHD symptoms. METHODS. Patient blood samples on day 7 after HCT were obtained from a multicenter set of 1,287 patients, and 620 samples were assigned to a training set. We measured the concentrations of 4 GVHD biomarkers (ST2, REG3α, TNFR1, and IL-2Rα) and used them to model 6-month NRM using rigorous cross-validation strategies to identify the best algorithm that defined 2 distinct risk groups. We then applied the final algorithm in an independent test set (n = 309) and validation set (n = 358). RESULTS. A 2-biomarker model using ST2 and REG3α concentrations identified patients with a cumulative incidence of 6-month NRM of 28% in the high-risk group and 7% in the low-risk group (P < 0.001). The algorithm performed equally well in the test set (33% vs. 7%, P < 0.001) and the multicenter validation set (26% vs. 10%, P < 0.001). Sixteen percent, 17%, and 20% of patients were at high risk in the training, test, and validation sets, respectively. GVHD-related mortality was greater in high-risk patients (18% vs. 4%, P < 0.001), as was severe gastrointestinal GVHD (17% vs. 8%, P < 0.001). The same algorithm can be successfully adapted to define 3 distinct risk groups at GVHD onset. CONCLUSION. A biomarker algorithm based on a blood sample taken 7 days after HCT can consistently identify a group of patients at high risk for lethal GVHD and NRM. FUNDING. The National Cancer Institute, American Cancer Society, and the Doris Duke Charitable Foundation.
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Affiliation(s)
| | - Umut Özbek
- Biostatistics Shared Resource Facility, TischCancer Institute, the Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | - Ernst Holler
- Blood and Marrow Transplantation Program, University of Regensburg, Regensburg, Germany
| | - Anne S Renteria
- Tisch Cancer Institute, the Icahn School of Medicine at Mount Sinai
| | | | - Pavan Reddy
- Blood and Marrow Transplantation Program, University of Michigan, Ann Arbor, Michigan, USA
| | - Mina Aziz
- Tisch Cancer Institute, the Icahn School of Medicine at Mount Sinai
| | - William J Hogan
- Blood and Marrow Transplantation Program, Mayo Clinic, Rochester, Minnesota, USA
| | - Francis Ayuk
- Department of Stem Cell Transplantation, University Medical Center, Hamburg-Eppendorf, Germany
| | - Yvonne A Efebera
- Blood and Marrow Transplantation Program, Ohio State University, Columbus, Ohio, USA
| | - Elizabeth O Hexner
- Blood and Marrow Transplantation Program, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Udomsak Bunworasate
- Blood and Marrow Transplantation Program, Chulalongkorn University, Bangkok, Thailand
| | - Muna Qayed
- Pediatric Blood and Marrow Transplantation Program, Aflac Cancer and Blood Disorders Center, Emory University and Children's Healthcare of Atlanta, Atlanta, Georgia, USA
| | - Rainer Ordemann
- Blood and Marrow Transplantation Program, University Hospital TU Dresden, Dresden, Germany
| | - Matthias Wölfl
- Pediatric Blood and Marrow Transplantation Program, Children's Hospital
| | - Stephan Mielke
- Blood and Marrow Transplantation Program, University of Würzburg, Würzburg, Germany
| | - Attaphol Pawarode
- Blood and Marrow Transplantation Program, University of Michigan, Ann Arbor, Michigan, USA
| | - Yi-Bin Chen
- Bone Marrow Transplantation Program, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Steven Devine
- Blood and Marrow Transplantation Program, Ohio State University, Columbus, Ohio, USA
| | - Andrew C Harris
- Blood and Marrow Transplantation Program, University of Utah, Salt Lake City, Utah, USA
| | | | - Carrie L Kitko
- Pediatric Blood and Marrow Transplantation Program, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Mark R Litzow
- Blood and Marrow Transplantation Program, Mayo Clinic, Rochester, Minnesota, USA
| | - Nicolaus Kröger
- Department of Stem Cell Transplantation, University Medical Center, Hamburg-Eppendorf, Germany
| | - Franco Locatelli
- Pediatric Blood and Marrow Transplantation Program, Ospedale Pediatrico Bambino Gesu, Rome, Italy
| | - George Morales
- Tisch Cancer Institute, the Icahn School of Medicine at Mount Sinai
| | - Ryotaro Nakamura
- Hematology and Hematopoietic Cell Transplantation, City of Hope Medical Center, Duarte, California, USA
| | - Ran Reshef
- Blood and Marrow Transplantation Program, Columbia University Medical Center, New York, New York, USA
| | - Wolf Rösler
- Department of Internal Medicine 5, Hematology/Oncology, University Hospital Erlangen-Nuremburg, Erlangen, Germany
| | - Daniela Weber
- Blood and Marrow Transplantation Program, University of Regensburg, Regensburg, Germany
| | - Kitsada Wudhikarn
- Blood and Marrow Transplantation Program, Chulalongkorn University, Bangkok, Thailand
| | - Gregory A Yanik
- Blood and Marrow Transplantation Program, University of Michigan, Ann Arbor, Michigan, USA
| | - John E Levine
- Tisch Cancer Institute, the Icahn School of Medicine at Mount Sinai
| | - James Lm Ferrara
- Tisch Cancer Institute, the Icahn School of Medicine at Mount Sinai
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Tandon A, Rajendran I, Aziz M, Nunes Q, Shrotri M. Laparoscopic assisted gastrectomy in elderly versus non-elderly patients with gastric cancer: A UK center experience. Int J Surg 2016. [DOI: 10.1016/j.ijsu.2016.08.429] [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: 10/20/2022]
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Algamal ZY, Lee MH, Al-Fakih AM, Aziz M. High-dimensional QSAR modelling using penalized linear regression model with L1/2-norm. SAR QSAR Environ Res 2016; 27:703-719. [PMID: 27628959 DOI: 10.1080/1062936x.2016.1228696] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2016] [Accepted: 08/22/2016] [Indexed: 06/06/2023]
Abstract
In high-dimensional quantitative structure-activity relationship (QSAR) modelling, penalization methods have been a popular choice to simultaneously address molecular descriptor selection and QSAR model estimation. In this study, a penalized linear regression model with L1/2-norm is proposed. Furthermore, the local linear approximation algorithm is utilized to avoid the non-convexity of the proposed method. The potential applicability of the proposed method is tested on several benchmark data sets. Compared with other commonly used penalized methods, the proposed method can not only obtain the best predictive ability, but also provide an easily interpretable QSAR model. In addition, it is noteworthy that the results obtained in terms of applicability domain and Y-randomization test provide an efficient and a robust QSAR model. It is evident from the results that the proposed method may possibly be a promising penalized method in the field of computational chemistry research, especially when the number of molecular descriptors exceeds the number of compounds.
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Affiliation(s)
- Z Y Algamal
- a Department of Mathematical Sciences , Universiti Teknologi Malaysia , Johor , Malaysia
| | - M H Lee
- a Department of Mathematical Sciences , Universiti Teknologi Malaysia , Johor , Malaysia
| | - A M Al-Fakih
- b Department of Chemistry , Universiti Teknologi Malaysia , Johor , Malaysia
| | - M Aziz
- b Department of Chemistry , Universiti Teknologi Malaysia , Johor , Malaysia
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Price ER, Sirsat TS, Sirsat SKG, Kang G, Keereetaweep J, Aziz M, Chapman KD, Dzialowski EM. Thermal acclimation in American alligators: Effects of temperature regime on growth rate, mitochondrial function, and membrane composition. J Therm Biol 2016; 68:45-54. [PMID: 28689720 DOI: 10.1016/j.jtherbio.2016.06.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 03/10/2016] [Revised: 06/22/2016] [Accepted: 06/24/2016] [Indexed: 10/21/2022]
Abstract
We investigated the ability of juvenile American alligators (Alligator mississippiensis) to acclimate to temperature with respect to growth rate. We hypothesized that alligators would acclimate to cold temperature by increasing the metabolic capacity of skeletal muscles and the heart. Additionally, we hypothesized that lipid membranes in the thigh muscle and liver would respond to low temperature, either to maintain fluidity (via increased unsaturation) or to maintain enzyme reaction rates (via increased docosahexaenoic acid). Alligators were assigned to one of 3 temperature regimes beginning at 9 mo of age: constant warm (30°C), constant cold (20°C), and daily cycling for 12h at each temperature. Growth rate over the following 7 mo was highest in the cycling group, which we suggest occurred via high digestive function or feeding activity during warm periods and energy-saving during cold periods. The warm group also grew faster than the cold group. Heart and liver masses were proportional to body mass, while kidney was proportionately larger in the cold group compared to the warm animals. Whole-animal metabolic rate was higher in the warm and cycling groups compared to the cold group - even when controlling for body mass - when assayed at 30°C, but not at 20°C. Mitochondrial oxidative phosphorylation capacity in permeabilized fibers of thigh muscle and heart did not differ among treatments. Membrane fatty acid composition of the brain was largely unaffected by temperature treatment, but adjustments were made in the phospholipid headgroup composition that are consistent with homeoviscous adaptation. Thigh muscle cell membranes had elevated polyunsaturated fatty acids in the cold group relative to the cycling group, but this was not the case for thigh muscle mitochondrial membranes. Liver mitochondria from cold alligators had elevated docosahexaenoic acid, which might be important for maintenance of reaction rates of membrane-bound enzymes.
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Affiliation(s)
- Edwin R Price
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA.
| | - Tushar S Sirsat
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Sarah K G Sirsat
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Gurdeep Kang
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Jantana Keereetaweep
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Mina Aziz
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Kent D Chapman
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
| | - Edward M Dzialowski
- Developmental Integrative Biology Research Group, Department of Biological Sciences, University of North Texas, Denton, TX 76203, USA
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Aleem I, Xu Y, Rampersaud YR, Pahuta M, St-Pierre GH, Crawford E, Zarrabian M, St-Pierre GH, Yang M, Scheer J, St-Pierre GH, Lou E, Malleck S, Soroceanu A, Soroceanu A, White B, Holtz KA, Fallah N, Noonan V, Finkelstein J, Rivers C, Tee J, Paquet J, Rutges J, Martin AR, Martin AR, Jack A, Malakoutian M, Kwon B, St-Pierre GH, Nater A, Versteeg A, Pahuta M, Fenton E, Nagoshi N, Tetreault L, Witiw C, Santaguida C, Aziz M, Khashan M, Tomkins-Lane C, Miyanji F, Johnson M, Tee J, Roffey DM, Evaniew N, Nouri A, Tetreault L, Arnold P, Tetreault L, Fehlings M, Wilson J, Smith JS, Charest-Morin R, Charest-Morin R, Marion T, Marion T, Kato S, Miyanji F, Enright A, Daly E, Fehlings M, Dakson A, Dakson A, Leck E, Khashan M, Abraham E, Manson N, Pahuta M, Duncan J, Ahmed A, Eck J, Rhee J, Currier B, Nassr A, Yen D, Johnson A, Bidos A, Schultz S, Fanti C, Young B, Drew B, Puskas D, Henry D, Frombach A, Mitera G, Coyle D, Werier J, Wai E, Hurlbert J, Ravinsky R, Bidos A, Rampersaud YR, Bidos A, Fanti C, Young B, Drew B, Puskas D, Rampersaud R, Yang M, Hurlbert J, Thomas K, St-Pierre GH, Duplessis S, Ailon T, Smith J, Shaffrey C, Klineberg E, Schwab F, Ames C, Yang M, Hurlbert J, Thomas K, Nataraj A, Zheng R, Hill D, Moreau M, Hedden D, Southon S, Johnson M, Goytan M, Passmore S, McIntosh G, Smith J, Lafage V, Klineberg E, Ailon T, Ames C, Shaffrey C, Gupta M, Kebaish K, Scubbia D, Hart R, Hostin R, Schwab F, Kelly M, Smith J, Scheer J, Lafage V, Protopsaltis T, Lafage R, Hostin R, Kebaish K, Gupta M, Hart R, Schwab F, Ames C, Dea N, Street J, Dvorak M, Lipson R, Noonan VK, Kwon BK, Mills PB, Noonan V, Shum J, Rivers C, Street J, Park SE, Chan E, Plashkes T, Dvorak M, Fallah N, Bedi M, Chan E, Rivers C, Street J, Plashkes T, Dvorak M, Noonan V, Fallah N, Ho C, Tsai E, Rivers C, Truchon C, Linassi AG, O’Connell C, Townson A, Ahn H, Drew B, Dvorak M, Fehlings MG, Schwartz C, Noreau L, Warner F, Noonan V, Fallah N, Fisher C, O’Connell C, Tsai E, Ahn H, Attabib N, Christie S, Drew B, Finkelstein J, Fourney D, Paquet J, Parent S, Kuerban D, Dvorak M, Paquet J, Noonan V, Kwon B, Tsai E, Christie S, Rivers C, Kuerban D, Ahn H, Attabib N, Bailey C, Drew B, Fehlings M, Finkelstein J, Fourney D, Hurlbert RJ, Parent S, Fisher C, Dvorak M, Noonan V, Kwon B, Tsai E, Christie S, Rivers C, Ahn H, Attabib N, Bailey C, Drew B, Fehlings M, Finkelstein J, Fourney D, Hurlbert RJ, Parent S, Kuerban D, Dvorak M, Kwon B, Dvorak M, Aleksanderek I, Cohen-Adad J, Cadotte DW, Kalsi-Ryan S, De Leener B, Wang J, Crawley A, Mikulis DJ, Ginsberg H, Fehlings MG, Aleksanderek I, Cohen-Adad J, Tarmohamed Z, Tetreault L, Smith N, Cadotte DW, Crawley A, Ginsberg H, Mikulis DJ, Fehlings MG, Nataraj A, Fouad K, Street J, Wilke HJ, Stavness I, Dvorak M, Fels S, Oxland T, Streijger F, Fallah N, Noonan V, Paquette S, Boyd M, Ailon T, Street J, Fisher C, Dvorak M, Hurlbert J, Fehlings M, Tetreault L, Kopjar B, Arnold P, Dekutoski M, Finkelstein J, Fisher C, France J, Gokaslan Z, Massicotte E, Rhines L, Rose P, Sahgal A, Schuster J, Vaccaro A, Dea N, Boriani S, Varga PP, Luzzati A, Fehlings M, Bilsky M, Rhines L, Reynolds J, Dekutoski M, Gokaslan Z, Germscheid N, Fisher C, van Walraven C, Coyle D, Werier J, Wai E, Mercier P, Bains I, Jacobs WB, Tetreault L, Nakashima H, Nouri A, Fehlings M, Kopjar B, Wilson J, Arnold P, Fehlings M, Tetreault L, Kopjar B, Massicotte E, Fehlings M, Fehlings M, Kopjar B, Arnold P, Defino H, Kale S, Yoon ST, Barbagallo G, Bartels R, Zhou Q, Vaccaro A, Johnson M, Passmore S, Goytan M, Glazebrook C, Golan J, McIntosh G, Barker J, Weber M, Hu R, Norden J, Sinha A, Smuck M, Desai S, Samdani AF, Shah SA, Asghar J, Yaszay B, Shufflebarger HL, Betz RR, Newton P, Passmore S, McCammon J, Goytan M, McIntosh G, Fisher C, Alfasi A, Hashem EL, Papineau GD, Kingwell SP, Wai EK, Belley-Côté EP, Fallah N, Noonan VK, Rivers CS, Dvorak MF, Tetreault L, Dalzell K, Zamorano JJ, Fehlings M, Shamji M, Rhee J, Wilson J, Andersson I, Dembek A, Pagarigan K, Dettori J, Fehlings M, Kopjar B, Tetreault L, Nakashima H, Fehlings M, Kopjar B, Arnold P, Kotter M, Fehlings M, Wilson J, Arnold P, Shaffrey C, Shamji M, Mroz T, Skelly A, Chapman J, Tetreault L, Aarabi B, Casha S, Jaglal S, Voth J, Yee A, Fehlings M, Klineberg E, Shaffrey CI, Lafage V, Schwab FJ, Protopsaltis T, Scheer JK, Ailon T, Ramachandran S, Daniels A, Mundis G, Gupta M, Deviren V, Ames CP, Street J, Stobart L, Ryerson CJ, Flexman A, Street J, Flexman A, Rivers C, Kuerban D, Cheng C, Noonan V, Dvorak M, Fisher C, Kwon B, Street J, Ailon T, Boyd M, Dvorak M, Fisher C, Kwon B, Paquette S, Street J, Lewis S, Reilly C, Shah SA, Clements DH, Samdani AF, Desai S, Lonner BS, Shufflebarger HL, Betz RR, Newton P, Johnson M, Passmore S, Goytan M, Manson N, Bigney E, Wagg K, Abraham E, Nater A, Tetreault L, Kopjar B, Arnold P, Dekutoski M, Finkelstein J, Fisher C, France J, Gokaslan Z, Massicotte E, Rhines L, Rose P, Sahgal A, Schuster J, Vaccaro A, Leck E, Christie S, Leck E, Christie S, Dakson A, Christie S, Weber M, McIntosh G, Barker J, Golan J, Wagg K, Armstrong M, Bigney E, Daly E, Manson N, Bigney E, Wagg K, Daly E, Abraham E, Perruccio A, Badley E, Rampersaud R. 2016 Canadian Spine Society Abstracts. Can J Surg 2016; 59:S39-63. [PMID: 27240290 DOI: 10.1503/cjs.006916] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Aziz M, Nadipalli RK, Xie X, Sun Y, Surowiec K, Zhang JL, Paré PW. Augmenting Sulfur Metabolism and Herbivore Defense in Arabidopsis by Bacterial Volatile Signaling. Front Plant Sci 2016; 7:458. [PMID: 27092166 PMCID: PMC4824779 DOI: 10.3389/fpls.2016.00458] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 03/24/2016] [Indexed: 05/24/2023]
Abstract
Sulfur is an element necessary for the life cycle of higher plants. Its assimilation and reduction into essential biomolecules are pivotal factors determining a plant's growth and vigor as well as resistance to environmental stress. While certain soil microbes can enhance ion solubility via chelating agents or oxidation, microbial regulation of plant-sulfur assimilation has not been reported. With an increasing understanding that soil microbes can activate growth and stress tolerance in plants via chemical signaling, the question arises as to whether such beneficial bacteria also regulate sulfur assimilation. Here we report a previously unidentified mechanism by which the growth-promoting rhizobacterium Bacillus amyloliquefaciens (GB03) transcriptionally activates genes responsible for sulfur assimilation, increasing sulfur uptake and accumulation in Arabidopsis. Transcripts encoding for sulfur-rich aliphatic and indolic glucosinolates are also GB03 induced. As a result, GB03-exposed plants with elevated glucosinolates exhibit greater protection against the generalist herbivore, Spodoptera exigua (beet armyworm, BAW). In contrast, a previously characterized glucosinolate mutant compromised in the production of both aliphatic and indolic glucosinolates is also compromised in terms of GB03-induced protection against insect herbivory. As with in vitro studies, soil-grown plants show enhanced glucosinolate accumulation and protection against BAW feeding with GB03 exposure. These results demonstrate the potential of microbes to enhance plant sulfur assimilation and emphasize the sophisticated integration of microbial signaling in plant defense.
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Affiliation(s)
- Mina Aziz
- Department of Chemistry and Biochemistry, Texas Tech University, LubbockTX, USA
- Center for Plant Lipid Research, University of North Texas, DentonTX, USA
| | | | - Xitao Xie
- Department of Chemistry and Biochemistry, Texas Tech University, LubbockTX, USA
| | - Yan Sun
- Department of Chemistry and Biochemistry, Texas Tech University, LubbockTX, USA
| | - Kazimierz Surowiec
- Department of Chemistry and Biochemistry, Texas Tech University, LubbockTX, USA
| | - Jin-Lin Zhang
- College of Pastoral Agriculture Science and Technology, Lanzhou UniversityLanzhou, China
| | - Paul W. Paré
- Department of Chemistry and Biochemistry, Texas Tech University, LubbockTX, USA
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Gad H, Omar H, Aziz M, Hassan M, Khalil M. Treatment of Rice Husk Ash to Improve Adsorption Capacity of Cobalt from Aqueous Solution. ACTA ACUST UNITED AC 2016. [DOI: 10.14233/ajchem.2016.19364] [Citation(s) in RCA: 14] [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: 11/12/2022]
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Abstract
Anterior caliceal stones represent a challenge to endourologist to select the best modality of management with the least morbidity. To study different treatment modalities of management of anterior caliceal stones >15 mm. It is an observational prospective study of patients with anterior caliceal stones more than 15 mm. Inclusion criteria were patients with isolated anterior caliceal stones, or branched anterior caliceal stones with posterior caliceal extension. Patients were evaluated using non-contrast CT preoperatively. They were divided into three groups: group 1 underwent PCNL through posterior caliceal puncture in cases with wide anterior calyx infundibulum or obtuse infundibulopelvic pelvic, group 2 underwent PCNL through anterior caliceal access in cases with narrow infundibulum or acute infundibulopelvic angel and group 3 underwent flexible ureteroscopy and laser lithotripsy. Intraoperative and postoperative findings were recorded and compared. Eighty eight patients were included in this study, Group 1 (44 patients) group 2 (28 patients), and group 3 (16 patients). Operative time was not significantly different across the three groups (68 ± 11.5, 72 ± 9 and 74 ± 11 min in group 1, 2 and 3, respectively, P = 0.053). Fluoroscopy time was significantly shorter for group 3 (2 ± 0.5 m, P = 0.0001) compared to group 1 and 2 (5.6 ± 4.6 and 4.5 ± 1.4 min), respectively. There were no significant differences in stone-free rates after initial treatment between the three groups; 84, 82, and 69 %, in groups 1, 2 and 3, respectively (P = 0.4). Postoperative hemoglobin drop was noted to be highest for group 2 and lowest for group 3 which was significantly different (1.7 ± 0.8, 2.2 ± 1.1, and 0.3 ± 0.3 g/dl, for patients in groups 1, 2 and 3 respectively, P = 0.0001). Group 2 showed the highest post-operative complication rate (21 %) in comparison to group 1 (11 %) and group 3 (6 %), however, differences were not statistically significant (P = 0.3). PCNL through posterior or anterior caliceal puncture is an excellent modality to treat anterior caliceal stones with high stone clearance rate. Despite the higher chance of bleeding with anterior caliceal puncture, it is still inevitably needed in difficult anterior caliceal stones with unfavorable anatomy. RIRS is a good alternative to PCNL with the advantage of less radiation exposure and less bleeding.
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Affiliation(s)
- M El-Shazly
- Urology Department, Menoufia University, Shibin Al Kom, Egypt.
| | - M Aziz
- Urology Department, Menoufia University, Shibin Al Kom, Egypt
| | - M Omar
- Urology Department, Menoufia University, Shibin Al Kom, Egypt
| | - O Al-Hunaidi
- Urology Department, Farwaniya Hospital, Kuwait City, Kuwait
| | - A R El-Nahas
- Urology Department, Urology and Nephrology Center, Mansoura University, Mansoura, Egypt
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Aziz M, Ghareeb D, Eweda S, Hussien H, Demellawy ME. Immunomodulatory effect of Berberis vulgarisextracts on murine splenocytes and enrichment of dendritic cells in vitro. BIOTECHNOL BIOTEC EQ 2015. [DOI: 10.1080/13102818.2015.1069172] [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: 10/23/2022] Open
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60
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Ayaz MM, Nazir MM, Lashari MH, Akhtar S, Khosa MA, Aziz M, Zahid H, Ali S, Muneeb M, Malik A, Haider S, Zafar Z. Recovery of Schistosoma haematobium ovum from Labeo rohita: first report from Pakistan. Trop Biomed 2015; 32:399-401. [PMID: 26695198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Schistosomiasis, also known as bilharzia, is a parasitic disease caused by trematodes from the genus Schistosoma that can infect humans and animals. S. mansoni, S. japonicum, and S. mekongi all causes intestinal schistosomiasis except S. haematobium that causes urinary schistosomiasis. It is only specie which effects urinary system, it can affect liver, heart, lungs also but very rarely. Schistosoma haematobium is endemic to over 50 countries in Africa and the Middle East and Western Asia and may be fatal in HIV positive people. A number of reports from the African countries like Nigeria have been reported. A few cases are reported but in Pakistan it has never been reported before in native people. It is first time reported in Pakistan in the intestine of Rahu (Labeo rohita). The purpose of this study is to elaborate the approach of zoonotic agent by various other routes including the commonly available fish.
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Affiliation(s)
- M M Ayaz
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University Multan, Pakistan
| | | | - M H Lashari
- Department of Life Sciences, Islamia University, Bahawalpur
| | - S Akhtar
- Department of Clinical Sciences, Faculty of Veterinary Sciences, Bahauddin Zakariya University Multan, Pakistan
| | - M A Khosa
- Department of Pathobiology, Faculty of Veterinary Sciences, Bahauddin Zakariya University Multan, Pakistan
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Hegazy MEF, Mohamed TA, Alhammady MA, Shaheen AM, Reda EH, Elshamy AI, Aziz M, Paré PW. Molecular architecture and biomedical leads of terpenes from red sea marine invertebrates. Mar Drugs 2015; 13:3154-81. [PMID: 26006713 PMCID: PMC4446624 DOI: 10.3390/md13053154] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [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: 04/09/2015] [Revised: 05/05/2015] [Accepted: 05/07/2015] [Indexed: 11/16/2022] Open
Abstract
Marine invertebrates including sponges, soft coral, tunicates, mollusks and bryozoan have proved to be a prolific source of bioactive natural products. Among marine-derived metabolites, terpenoids have provided a vast array of molecular architectures. These isoprenoid-derived metabolites also exhibit highly specialized biological activities ranging from nerve regeneration to blood-sugar regulation. As a result, intense research activity has been devoted to characterizing invertebrate terpenes from both a chemical and biological standpoint. This review focuses on the chemistry and biology of terpene metabolites isolated from the Red Sea ecosystem, a unique marine biome with one of the highest levels of biodiversity and specifically rich in invertebrate species.
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Affiliation(s)
- Mohamed Elamir F Hegazy
- Chemistry of Medicinal Plants Department, Center of Excellence for Advanced Sciences, National Research Centre, 33 El Bohouth st., Dokki, Giza, P.O. Box 12622, Egypt.
| | - Tarik A Mohamed
- Chemistry of Medicinal Plants Department, Center of Excellence for Advanced Sciences, National Research Centre, 33 El Bohouth st., Dokki, Giza, P.O. Box 12622, Egypt.
| | - Montaser A Alhammady
- National Institute of Oceanography and Fisheries, Red Sea Branch, Hurghada 84511, Egypt.
| | - Alaa M Shaheen
- Chemistry of Medicinal Plants Department, Center of Excellence for Advanced Sciences, National Research Centre, 33 El Bohouth st., Dokki, Giza, P.O. Box 12622, Egypt.
| | - Eman H Reda
- Chemistry of Medicinal Plants Department, Center of Excellence for Advanced Sciences, National Research Centre, 33 El Bohouth st., Dokki, Giza, P.O. Box 12622, Egypt.
| | - Abdelsamed I Elshamy
- Natural Compounds Chemistry Department, National Research Centre, 33 El Bohouth st. (former El Tahrir st.) Dokki, Giza, P.O. Box 12622, Egypt.
| | - Mina Aziz
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409, USA.
| | - Paul W Paré
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409, USA.
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EL-Khawlani A, Aziz M, Ismail M, Ellithi AY. Analysis of a homogenous and heterogeneous stylized half core of a CANDU reactor. KERNTECHNIK 2015. [DOI: 10.3139/124.110482] [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: 11/20/2022]
Abstract
Abstract
The MCNPX (Monte Carlo N-Particle Transport Code System) code has been used for modeling and simulation of a half core of CANDU (CANada Deuterium-Uranium) reactor, both homogenous and heterogeneous model for the reactor core are designed. The fuel is burnt in normal operation conditions of CANDU reactors. Natural uranium fuel is used in the model. The multiplication factor for homogeneous and heterogeneous reactor core is calculated and compared during fuel burnup. The concentration of both uranium and plutonium isotopes are analysed in the model. The flux and power distributions through channels are calculated.
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Affiliation(s)
- A. EL-Khawlani
- Physics Department , Faculty of Science, High Education, Sana'a , Yemen. E-mail:
| | - M. Aziz
- Nuclear and radiological regulatory authority , 3 Ahmed Alzomer street, P.O. Box 755, Nasr city, Cairo , Egypt. E-mail:
| | - M. Ismail
- Faculty of Science , Cairo University, Cairo , Egypt
| | - A. Y. Ellithi
- Faculty of Science , Cairo University, Cairo , Egypt. E-mail:
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Peiris SPM, Hanratty DR, Naguib NN, Aziz M, Haray PN. Use of the Endoractor in laparoscopic colorectal surgery - a video vignette. Colorectal Dis 2015; 17:175. [PMID: 25469721 DOI: 10.1111/codi.12855] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/19/2014] [Indexed: 02/08/2023]
Affiliation(s)
- S P M Peiris
- Department of Colorectal Surgery, Prince Charles Hospital, Merthyr Tydfil, CF47 9DT, UK.
| | - D R Hanratty
- Department of Colorectal Surgery, Prince Charles Hospital, Merthyr Tydfil, CF47 9DT, UK
| | - N N Naguib
- Department of Colorectal Surgery, Prince Charles Hospital, Merthyr Tydfil, CF47 9DT, UK
| | - M Aziz
- Department of Anaesthesia, Prince Charles Hospital, Merthyr Tydfil, CF47 9DT, UK
| | - P N Haray
- Department of Colorectal Surgery, Prince Charles Hospital, Merthyr Tydfil, CF47 9DT, UK
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Bertrand J, Marion-Letellier R, Azhar S, Chan P, Legrand R, Goichon A, Aziz M, Vaudry D, Déchelotte P, Savoye G, Coëffier M. P213: L’administration de glutamine par voie rectale modifie le profil d’expression colique des protéines ubiquitinées au cours d’une colite chez le rat : focus sur le métabolisme mitochondrial. NUTR CLIN METAB 2014. [DOI: 10.1016/s0985-0562(14)70855-6] [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: 10/24/2022]
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Bertrand J, Marion-Letellier R, Azhar S, Chan P, Legrand R, Goichon A, Aziz M, Vaudry D, Savoye G, Déchelotte P, Coëffier M. PP281-SUN: Outstanding abstract: Glutamine Enema Regulates Colonic Ubiquitinated-Proteins but not Proteasome Activities During TNBS-Induced Colitis Leading to Increased Mitochondrial Activity. Clin Nutr 2014. [DOI: 10.1016/s0261-5614(14)50322-6] [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: 10/24/2022]
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Elmasri WA, Hegazy MEF, Aziz M, Koksal E, Amor W, Mechref Y, Hamood AN, Cordes DB, Paré PW. Biofilm blocking sesquiterpenes from Teucrium polium. Phytochemistry 2014; 103:107-113. [PMID: 24735824 DOI: 10.1016/j.phytochem.2014.03.029] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Revised: 01/10/2014] [Accepted: 03/21/2014] [Indexed: 06/03/2023]
Abstract
The chemical composition and antibacterial activity of Teucrium polium L. (Lamiaceae) were assessed; sixteen compounds were isolated from a CH2Cl2/MeOH extract of the aerial parts of the plant including four sesquiterpenes 4β,5α-epoxy-7αH-germacr-10(14)-en-6β-ol-1-one, 4β,5α-epoxy-7αH-germacr-10(14)-en,1β-hydroperoxyl,6β-ol, 4β,5β-epoxy-7αH-germacr-10(14)-en,1β-hydroperoxyl,6β-ol and 4α,5β-epoxy-7αH-germacr-10(14)-en,1β-hydroperoxyl,6α-ol, together with seven known sesquiterpenes, one known iridoid glycoside, two known flavonoids, and one known phenylpropanoid glycoside. Structures were elucidated on the basis of spectroscopic (UV, (1)H and (13)C NMR) data, as well as two-dimensional NMR ((1)H-(1)H COSY, HMQC, NOESY and HMBC), and ESI-MS analysis. The relative stereochemistry of the ketone was established by X-ray crystallography, while its absolute configuration was attained by a modified Mosher's method. Antibacterial activity of the crude extract, as well as with four of the isolated metabolites, was observed with Staphylococcus aureus anti-biofilm activity in the low μMol range. Diverse sesquiterpene-skeleton structure and corresponding comprehensive enzyme capacity is discussed.
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Affiliation(s)
- Wael A Elmasri
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
| | - Mohamed-Elamir F Hegazy
- Chemistry of Medicinal Plants/Center Excellence Science, National Research Centre, El-Tahrir St, Dokki, Giza 12311, Egypt
| | - Mina Aziz
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
| | - Ekrem Koksal
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
| | - Wail Amor
- Department of Microbiology and Immunology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - Yehia Mechref
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
| | - Abdul N Hamood
- Department of Microbiology and Immunology, Texas Tech University Health Sciences Center, Lubbock, TX 79430, USA
| | - David B Cordes
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA
| | - Paul W Paré
- Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, TX 79409-1061, USA.
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Melin A, Tornberg ÅB, Skouby S, Møller SS, Sundgot-Borgen J, Faber J, Sidelmann JJ, Aziz M, Sjödin A. Energy availability and the female athlete triad in elite endurance athletes. Scand J Med Sci Sports 2014; 25:610-22. [PMID: 24888644 DOI: 10.1111/sms.12261] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/01/2014] [Indexed: 12/31/2022]
Abstract
The female athlete triad (Triad), links low energy availability (EA), with menstrual dysfunction (MD), and impaired bone health. The aims of this study were to examine associations between EA/MD and energy metabolism and the prevalence of Triad-associated conditions in endurance athletes. Forty women [26.2 ± 5.5 years, body mass index (BMI) 20.6 ± 2.0 kg/m(2), body fat 20.0 ± 3.0%], exercising 11.4 ± 4.5 h/week, were recruited from national teams and competitive clubs. Protocol included gynecological examination; assessment of bone health; indirect respiratory calorimetry; diet and exercise measured 7 days to assess EA; eating disorder (ED) examination; blood analysis. Subjects with low/reduced EA (< 45 kcal/kg FFM/day), had lower resting metabolic rate (RMR) compared with those with optimal EA [28.4 ± 2.0 kcal/kg fat-free mass (FFM)/day vs 30.5 ± 2.2 kcal/kg FFM/day, P < 0.01], as did subjects with MD compared with eumenorrheic subjects (28.6 ± 2.4 kcal/kg FFM/day vs 30.2 ± 1.8 kcal/kg FFM/day, P < 0.05). 63% had low/reduced EA, 25% ED, 60% MD, 45% impaired bone health, and 23% had all three Triad conditions. 53% had low RMR, 25% hypercholesterolemia, and 38% hypoglycemia. Conclusively, athletes with low/reduced EA and/or MD had lowered RMR. Triad-associated conditions were common in this group of athletes, despite a normal BMI range. The high prevalence of ED, MD, and impaired bone health emphasizes the importance of prevention, early detection, and treatment of energy deficiency.
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Affiliation(s)
- A Melin
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
| | - Å B Tornberg
- Department of Health Sciences, Division of Physiotherapy, Lund University, Lund, Sweden.,Genetic & Molecular Epidemiology (GAME) Unit, Lund University Diabetes Center, Clinical Research Center, Skåne University Hospital, Malmö, Sweden
| | - S Skouby
- Endocrinological and Reproductive Unit, Department of Ob/Gyn. Herlev Hospital, Faculty of Health and Medical Sciences, University of Copenhagen, Herlev, Denmark
| | - S S Møller
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
| | | | - J Faber
- Endocrinological and Reproductive Unit, Department of Ob/Gyn. Herlev Hospital, Faculty of Health and Medical Sciences, University of Copenhagen, Herlev, Denmark
| | - J J Sidelmann
- Unit for Thrombosis Research, Institute of Public Health, University of Southern Denmark, Esbjerg, Denmark
| | - M Aziz
- Endocrinological and Reproductive Unit, Department of Ob/Gyn. Herlev Hospital, Faculty of Health and Medical Sciences, University of Copenhagen, Herlev, Denmark
| | - A Sjödin
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg, Denmark
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Abstract
OBJECTIVE To evaluate the plasma level of YKL-40 in a Danish polycystic ovary syndrome (PCOS) population and to investigate whether YKL-40 is associated with CVD risk factors such as waist circumference, body mass index (BMI), insulin resistance (IR), fasting glucose, fasting insulin, blood lipids and CRP. DESIGN Cross-sectional study. SETTING Gynecological clinics at three Danish University Hospitals. PATIENTS One hundred seventy-one premenopausal women with PCOS recruited consecutively from April 2010 to February 2012. PCOS was diagnosed according to the Rotterdam criteria. MAIN OUTCOME MEASURES Plasma level of YKL-40 in four phenotypes of PCOS defined by BMI and IR. RESULTS No statistically significant difference was observed in the plasma level of YKL-40 across the four BMI/IR-phenotypes. Positive associations were observed between YKL-40 and BMI, total and free testosterone, triglycerides, and CRP. Total and free testosterone were independent predictors of YKL-40. CONCLUSION YKL-40, the marker of low-grade inflammation is not increased in women with PCOS.
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Affiliation(s)
- M Aziz
- Department of Gynaecology and Obstetrics, Faculty of Health and Medical Sciences, Herlev Hospital, Copenhagen University , Herlev , Denmark
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Aziz M, Kessler H, Huhn G. Providers' lack of knowledge about herpes zoster in HIV-infected patients is among barriers to herpes zoster vaccination. Int J STD AIDS 2013; 24:433-9. [PMID: 23970744 DOI: 10.1177/0956462412472461] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Identification of perceptions about herpes zoster (HZ) disease, vaccine effectiveness and safety, and vaccine recommendations may impact immunization practices of physicians for HIV-infected patients. A survey was used to quantify knowledge of HZ as well as determine physician immunization perceptions and practices. There were 272/1700 respondents (16%). Correct answers for the incidence of varicella zoster virus (VZV) infection in adults and incidence of HZ in HIV-infected patients were recorded by 14% and 10% of providers, respectively. Providers reported poor knowledge of the incidence of disease recurrence in HIV-infected patients (41% correct), potency of HZ vaccine (47.5% correct) and mechanism of protection against reactivation of VZV (66% correct). Most (88%) agreed that HZ was a serious disease, and 73% believed that the burden of disease made vaccination important. A majority (75%) did not vaccinate HIV patients with HZ vaccine regardless of antiretroviral therapy status. Barriers to administration included safety concerns, concern that vaccine would not prevent HZ, risk of HZ dissemination, reimbursement issues and lack of Infectious Diseases Society of America (IDSA) guidelines. Only 38% of providers agreed that CDC guidelines were clear and 50% believed that clinical trials were needed prior to use of HZ vaccine in HIV-infected patients. Education about HZ is needed among HIV providers. Providers perceived vaccination as important, but data on vaccine safety and clear guidance from the CDC on this issue are lacking.
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Affiliation(s)
- M Aziz
- Rush University Medical Center/John H Stroger Hospital of Cook County, Chicago, IL, USA.
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Abstract
Abstract
Neutronic calculations were performed for the new loading configuration of the ETRR-1 research reactor. The MCNP three dimensions Monte Carlo code and the two dimensions CITATION code are used to model the reactor. The power and thermal flux distributions in the reactor core are calculated. The power peak factor and the effect of control rod insertion on both flux and power profiles in the reactor core are determined and analyzed. The partial and total control rods worth are calculated. It was found that the difference between MCNP and CITATION in power distributions is 4 to 8 % and for thermal flux ranges between 3 to 14 %.
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Affiliation(s)
- M. Aziz
- Assistant Prof., National Center for Nuclear Safety, 3 Ahmed Alzomer street, Nasr City, Cairo, Egypt. E-mail:
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74
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Aziz M. Calculation of control plates life time and worth at the ETRR-2 research reactor. KERNTECHNIK 2013. [DOI: 10.3139/124.100205] [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: 11/20/2022]
Abstract
Abstract
A detailed three-dimensional MCNP model of the ETRR-2 research reactor has been developed for the analysis of the neutronic parameters of the reactor. The model was used to determine the partial control plates reactivity worth and the behavior of the worth with time. The results of the present model were compared with the experimental measurements for partial control plates reactivity worth and with the design calculations for control plates behavior with time. The comparisons indicate satisfactory agreement.
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Affiliation(s)
- M. Aziz
- National Center for Nuclear Safety, 3 Ahmed Alzomer Street, P.O. Box 7551, Nasr City, Cairo, Egypt,
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Abstract
Abstract
The MCNP computer Code is used to model the ETRR-2 research reactor. A computer program was designed to evaluate the axial burn-up of the fuel elements. The excess reactivity of the reactor core is calculated for different core configurations and compared with the existing measurements. The thermal flux is also calculated and compared with measurements. Several factors that affect the safety of the reactor such as power peak and the effect of control rod insertion on the reactor power and flux were studied and analysed. The agreement between the MCNP results and the experimentally determined values is good.
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Affiliation(s)
- M. Aziz
- National Center For Nuclear Safety, Atomic Energy Authority, Cairo, Egypt. E-mail:
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Foad B, Mansour H, Aziz M. Neutronic and burn-up calculations of heterogeneous Thorium/Uranium fuel in pressurized water reactors. KERNTECHNIK 2013. [DOI: 10.3139/124.110092] [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: 11/20/2022]
Abstract
Abstract
The purpose of this work is to study the feasibility of the Thorium/Uranium fuel cycle in heterogeneous Pressurized Water Reactors (PWR) core design. This paper focuses on the neutronic and burn-up analysis of the Thorium/Uranium fuel using the computer codes MCNPX and WIMS. The design is based on the Whole Assembly Seed and Blanket (WASB) concept, in which the individual seed (Uranium) and blanket (Thorium-Uranium) units occupy one full-size PWR assembly in a checkerboard core configuration. The results of the present models were compared with the solution of benchmark problems and satisfactory agreement was found.
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Affiliation(s)
- B. Foad
- National Center for Nuclear Safety and Radiation Control, Atomic Energy Authority, 3 Ahmad Alzomer street, P.O. Box 7551, Cairo, Egypt. E-mail:
| | - H. Mansour
- Physics department, Faculty of Science, Cairo University, Cairo, Egypt. E-mail:
| | - M. Aziz
- National Center for Nuclear Safety and Radiation Control, Atomic Energy Authority, 3 Ahmad Alzomer street, P.O. Box 7551, Cairo, Egypt. E-mail:
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Aziz M. Calculation of the pin power distribution for a thorium reactor assembly and benchmarking. KERNTECHNIK 2013. [DOI: 10.3139/124.100315] [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: 11/20/2022]
Abstract
Abstract
A computer model was developed to perform neutronic and burn-up analysis for an assembly of a thorium reactor. The MCNP computer code was used to model the geometry of the assembly and to determine both, the power and flux distribution. A system of ordinary differential equations which represents all fuel isotopes was solved numerically to evaluate the time behavior of fuel composition and burn-up. The results of the present model were compared with the solutions of benchmark problems and satisfactory agreement was found.
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Affiliation(s)
- M. Aziz
- National Center for Nuclear Safety, Atomic Energy Authority, 3 Ahmed Alzomer Street, P.O.Box 7551, Cairo, Egypt.
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Matsuo S, Yang W, Aziz M, Wang P. C75, a Fatty Acid Synthase Inhibitor, Alleviates Experimental Colitis. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.592] [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: 11/17/2022]
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Aziz M, Sidelmann J, Faber J, Wissing M, Skouby S. P-008 Polycystic ovary syndrome: Influence of BMI and insulin resistance on trombin generation in plasma. Thromb Res 2013. [DOI: 10.1016/s0049-3848(13)70054-9] [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: 10/27/2022]
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Goh P, Ng B, Ismail A, Aziz M, Hayashi Y. Pre-treatment of multi-walled carbon nanotubes for polyetherimide mixed matrix hollow fiber membranes. J Colloid Interface Sci 2012; 386:80-7. [DOI: 10.1016/j.jcis.2012.07.033] [Citation(s) in RCA: 26] [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] [Received: 04/23/2012] [Revised: 07/03/2012] [Accepted: 07/12/2012] [Indexed: 11/17/2022]
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Aziz M, Naver KV, Wissing MLM, Mikkelsen AL, Nilas L, Skouby SO. Polycystic ovary syndrome: infertility, cardiovascular, metabolic and obstetrical risks, laboratory and clinical outcomes -- the PICOLO Study. Gynecol Endocrinol 2012; 28:253-8. [PMID: 22217188 DOI: 10.3109/09513590.2011.613966] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [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: 11/13/2022] Open
Abstract
OBJECTIVES The primary objective of this multicenter study is to evaluate the relative impact of insulin resistance (IR) and body mass index (BMI) in women with polycystic ovary syndrome (PCOS) on (1) Key hemodynamic/thrombogenic variables, (2) Oocyte quality and early embryo development, (3) Fetal growth, placental function and adverse obstetric outcome. SECONDARY OBJECTIVE To establish a PCOS database and biobank facilitating future basic and interventional research related to PCOS. DESIGN A cross-sectional and longitudinal cohort study at four University Hospitals in Denmark. POPULATION INCLUSION: About 200 women fulfilling the Rotterdam Criteria and 100 women without PCOS recruited from 2010 to 2012. METHODS The impact of PCOS, as well as the impact of IR and BMI on the hormonal, metabolic and hemostatic key variables will be analyzed combining conventional, molecular techniques and selected gene analysis. Oocytes will be characterized by gene expression of granulosa and cumulus cells and the early embryo development will be followed by time lapse microscopy. Fetal growth will be assessed by repeated ultrasound measurements, and the pregnancy outcome compared to maternal and fetal biochemical markers of growth and inflammation and clinical pregnancy complications. MAIN OUTCOME MEASURES Metabolic and hemostatic risk-biomarkers, oocyte and embryo quality, adverse pregnancy outcome, fetal growth and placental function in women with PCOS.
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Affiliation(s)
- M Aziz
- Department of Gynecology and Obstetrics, Herlev University Hospital, Denmark.
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Jacob A, Shah K, Aziz M, Yang W, Dewey S, Schiffer W, Wang P. The role of cold-inducible RNA binding protein (CIRP) in acute alcohol exposure induced brain injury. Alcohol 2012. [DOI: 10.1016/j.alcohol.2011.09.010] [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: 11/26/2022]
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Aziz M, Fushimi C, Kansha Y, Mochidzuki K, Kaneko S, Tsutsumi A, Matsumoto K, Hashimoto T, Kawamoto N, Oura K, Yokohama K, Yamaguchi Y, Kinoshita M. Innovative Energy-Efficient Biomass Drying Based on Self-Heat Recuperation Technology. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201100065] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [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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Abstract
A Levitan Optical Stylet with a modified curve was used in the operating theatre for 301 timed tracheal intubations. Jaw lift was provided manually instead of with a direct laryngoscope. All tracheas except one were intubated successfully (99.7%). Mean (SD) intubation times were 23 (24) s. Three patients (1%) suffered minor trauma. The modified Levitan Optical Stylet can be used without direct laryngoscopy as an effective, rapid and relatively atraumatic tool for intubation, even in difficult airways. It may be appropriate as an alternative or primary intubation technique instead of direct laryngoscopy.
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Affiliation(s)
- M Aziz
- Department of Anesthesiology & Perioperative Medicine, Oregon Health & Science University, Portland, OR, USA.
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Goh PS, Ng BC, Ismail AF, Sanip SM, Aziz M, Kassim MA. Effect of Dispersed Multi-Walled Carbon Nanotubes on Mixed Matrix Membrane for O2/N2Separation. SEP SCI TECHNOL 2011. [DOI: 10.1080/01496395.2011.554952] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Alamir I, Boukhettala N, Aziz M, Breuillé D, Déchelotte P, Coëffier M. Beneficial effects of cathepsin inhibition to prevent chemotherapy-induced intestinal mucositis. Clin Exp Immunol 2010; 162:298-305. [PMID: 20731673 DOI: 10.1111/j.1365-2249.2010.04220.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
One of the main secondary toxic side effects of anti-mitotic agents used to treat cancer patients is intestinal mucositis. Previous data showed that cathepsin D activity, contributing to the proteolytic lysosomal pathway, is up-regulated during intestinal mucositis in rats. At the same time, cathepsin inhibition limits intestinal damage in animal models of inflammatory bowel diseases. The aim of this study was to evaluate the effects of cathepsin inhibition on methotrexate-induced mucositis in rats. Male Sprague-Dawley rats received saline solution subcutaneously as the control group or 2·5 mg/kg of methotrexate for 3 days (D0-D2). From D0 to D3 methotrexate-treated rats also received intraperitoneal injections of pepstatin A, a specific inhibitor of cathepsin D or E64, an inhibitor of cathepsins B, H and L, or vehicle. Rats were euthanized at D4 and jejunal samples were collected. Body weight and food intake were partially preserved in rats receiving E64 compared with rats receiving vehicle or pepstatin A. Cathepsin D activity, used as a marker of lysosomal pathway, was reduced both in E64 and pepstatin-treated rats. However, villus atrophy and intestinal damage observed in methotrexate-treated rats were restored in rats receiving E64 but not in rats receiving pepstatin A. The intramucosal concentration of proinflammatory cytokines, interleukin-1β and cytokine-induced neutrophil chemoattractant (CINC)-2, was markedly increased in methotrexate-treated rats receiving vehicle or pepstatin A but not after E64 treatment. In conclusion, a large broad inhibition of cathepsins could represent a new potential target to limit the severity of chemotherapy-induced mucositis as opposed to the inhibition of cathepsin D alone.
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Affiliation(s)
- I Alamir
- Institute for Biomedical Research and European Institute for Peptide Research, Rouen University, France
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88
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Kattouf J, Belmoukhtar M, Harnafi H, Mekhfi H, Ziyyat A, Aziz M, Bnouham M, Legssyer A. Effet antihypertenseur des feuilles d’Inula viscosa. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s10298-009-0517-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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89
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Abstract
The adsorption of U(VI) onto peat moss has been studied as a function of uranium concentration, pH, shaking time and ionic strength. The pH and ionic strength of the solution markedly affect the extent of removal. The attainment of equilibrium is fast and the equilibrium data fit well the Freundlich, Langmuir and Dubinin-Radushkevich equations. A probable mechanism of uptake is discussed. Further studies demonstrate that under optimum conditions peat moss can be used for the treatment of waste solutions containing low concentrations of uranium.
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90
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Morgan M, Aziz M, Mikhail M, Henein M, Atalla R. Ultrasound guided treatment of cornual ectopic pregnancy. Eur J Obstet Gynecol Reprod Biol 2009; 143:126. [PMID: 19157677 DOI: 10.1016/j.ejogrb.2008.11.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2008] [Revised: 10/29/2008] [Accepted: 11/30/2008] [Indexed: 11/25/2022]
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91
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Affiliation(s)
- K. Shakir
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
| | - M. Aziz
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
| | - H. N. Salama
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
| | - K. Benyamin
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
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92
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Affiliation(s)
- K. Shakir
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
| | - M. Aziz
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
| | - H. N. Salama
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
| | - K. Benyamin
- a Nuclear Chemistry and Radiation Protection Departments , Nuclear Research Centre, Atomic Energy Establishment , Cairo, Egypt
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93
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Brimo F, Aziz M, Rosen G, Turcotte R, Nahal A. Malignancy in giant cell tumour of bone: is there a reproducible histological threshold? A study of three giant cell tumours with worrisome features. Histopathology 2008; 51:864-6. [PMID: 18042075 DOI: 10.1111/j.1365-2559.2007.02875.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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94
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Fattorini L, Iona E, Cirillo D, Migliori GB, Orefici G, Aziz M, Wright A, Tafaj S, Baig B, Mulliqi G, Maungate S, Cuna Z, Al-Busaidy S, Al-Suwaidi Z, Ceyhan I. External quality control of Mycobacterium tuberculosis drug susceptibility testing: results of two rounds in endemic countries. Int J Tuberc Lung Dis 2008; 12:214-217. [PMID: 18230256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023] Open
Abstract
SETTING Quality assurance for the World Health Organization (WHO)/International Union Against Tuberculosis and Lung Disease (The Union) global tuberculosis (TB) drug resistance surveillance programme. OBJECTIVE To monitor the quality of drug susceptibility testing (DST) in different countries. METHODS In 2002-2003 and 2005-2006, 20 Mycobacterium tuberculosis strains were sent by the WHO/Union Supranational Reference Laboratory of Rome to TB reference laboratories in Albania, Bahrain, Kosovo, Mozambique, Oman, Qatar and Turkey for external quality control (EQC). RESULTS In 2002-2003, the specificity, sensitivity, efficiency, reproducibility and predictive values for resistance/susceptibility were >or=90% for streptomycin (SM), isoniazid (INH) and ethambutol (EMB). In 2005-2006, all statistical values were >or=96% for SM, INH, rifampicin and EMB. CONCLUSION EQC improved the quality of M. tuberculosis DST in the participating countries.
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Affiliation(s)
- L Fattorini
- Istituto Superiore di Sanità, Dipartimento di Malattie Infettive, Parassitarie e Immunomediate, Rome, Italy.
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95
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Andre F, Nahta R, Conforti R, Boulet T, Aziz M, Yuan LXH, Meslin F, Spielmann M, Tomasic G, Pusztai L, Hortobagyi GN, Michiels S, Delaloge S, Esteva FJ. Expression patterns and predictive value of phosphorylated AKT in early-stage breast cancer. Ann Oncol 2008; 19:315-20. [PMID: 17804473 DOI: 10.1093/annonc/mdm429] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [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: 11/13/2022] Open
Abstract
BACKGROUND AKT phosphorylation is a critical step in the activation of growth factor receptors and can mediate tumor resistance to anthracyclines. We evaluated the expression patterns and predictive value of phosphorylated AKT (pAKT) in breast cancer tissues. PATIENTS AND METHODS pAKT expression was assessed by immunohistochemistry in 823 tumors from patients with early breast cancer enrolled in two randomized trials. The distribution of pAKT expression was correlated with HER2 and epidermal growth factor receptor (EGFR) expression. The predictive value of pAKT for the efficacy of adjuvant chemotherapy was determined by test for interaction. RESULTS pAKT, EGFR, and HER2 were expressed in 119 of 781 (15%), 118 of 758 (16%), and 99 of 775 (13%) assessable tumors. Staining was positive for pAKT in 28 of 99 (28%) and 90 of 676 (13%) HER2+ and HER2- tumors (P < 0.001). pAKT was expressed in 15 of 94 (16%) and 75 of 563 (13%) HER2-/EGFR+ and HER2-/EGFR- tumors, respectively (P = 0.49). A positive staining for pAKT did not correlate with prognosis (P = 0.94), and did not predict the resistance to anthracyclines (test for interaction, P = 0.70). CONCLUSIONS AKT phosphorylation is associated with HER2 expression but not EGFR expression in patients with early breast cancer. pAKT is not predictive for the efficacy of anthracycline-based adjuvant chemotherapy.
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Affiliation(s)
- F Andre
- Department of Breast Medical Oncology, The University of Texas M. D. Anderson Cancer Center, Houston, TX, USA
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96
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Aziz M, Ryszewska K, Blanc L, Vincent V, Getahun H, Wright A, Nunn P, Raviglione M. Expanding culture and drug susceptibility testing capacity in tuberculosis diagnostic services: the new challenge. Int J Tuberc Lung Dis 2007; 11:247-50. [PMID: 17352087] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023] Open
Affiliation(s)
- M Aziz
- Stop TB Department, World Health Organization, Geneva, Switzerland.
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97
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Naguib M, Schrijver I, Gardner P, Piquet L, Doss S, Abu Zekry M, Aziz M, Nasré S. 472 Incidence of Cystic Fibrosis in high-risk Egyptian children and CFTR mutation analysis. J Cyst Fibros 2006. [DOI: 10.1016/s1569-1993(06)80396-6] [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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98
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Michael R, Younan N, Aziz M, Mostafa N, Ghobriel A, Gintautas J. Effect of a non-opiate analgesic, nefopam hydrochloride, on stress gastric ulcer in rats. Proc West Pharmacol Soc 2002; 44:109-11. [PMID: 11793953] [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] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- R Michael
- Brookdale University Hospital and Medical Center, New York, NY 11212, USA
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99
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Aziz M, Bretzel G. Use of a standardised checklist to assess peripheral sputum smear microscopy laboratories for tuberculosis diagnosis in Uganda. Int J Tuberc Lung Dis 2002; 6:340-9. [PMID: 11936744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
SETTING TB diagnostic units in Uganda. OBJECTIVES To assess and improve the supervision and performance of sputum smear microscopy in the peripheral diagnostic units in Uganda using a standardised laboratory checklist. DESIGN A standardised checklist was developed and used during the quarterly supervisory visits of the District TB and Leprosy Supervisors for five quarters from the fourth quarter of 1997 until the last quarter of 1998. Individual peripheral laboratory performance was monitored during the study period. RESULTS Forty-eight of 304 TB diagnostic units in six of the 45 Ugandan Districts were supervised using the checklist. A total of 208 checklists were analysed. The situational analysis of the peripheral diagnostic units at the beginning and at the end of the study showed a marked improvement in laboratory performance in all aspects related to sputum smear microscopy. Individual laboratory performance was monitored over five quarters, and timely response to shortcomings was provided. CONCLUSION The systematic use of a standardised laboratory checklist can be considered an important step forward in improving the performance of the peripheral laboratories in Uganda through on-the-spot correction of any identified shortcomings.
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Affiliation(s)
- M Aziz
- German Leprosy Relief Association/National Tuberculosis and Leprosy Control Programme, Kampala, Uganda.
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100
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Abstract
Electroconvulsive therapy (ECT) in patients with mental retardation has received limited study and is a subject of controversy. Specific difficulties in using ECT for this patient population include diagnostic dilemmas, difficulties with measuring outcome and monitoring side effects, and problems with professional attitudes. We report our experience with two cases in which ECT was applied to treat severe psychotic and catatonic symptoms. In case 1, a 22-year-old male patient with a history of moderate mental retardation, bipolar disorder, and neuroleptic malignant syndrome was admitted to manage his disruptive behavior and psychotic symptoms. The patient responded well to six bilateral ECTs with diminution of his psychotic symptoms and behavioral disturbances. In Case 2, a 39-year-old female patient with a history of mental retardation, schizoaffective disorder, and catatonic symptoms successfully responded to 11 bilateral ECTs. We conclude that ECT can be used safely and effectively in patients with mental retardation and severe or refractory psychotic symptoms.
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Affiliation(s)
- M Aziz
- Department of Psychiatry, University of Michigan, Ann Arbor 48109, USA
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