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Yazdani A, Rezaeianpour S, Shahhosseini S, Yousefi M, Iranbakhsh A. Synthesis and evaluation of [2+1] Re(I)/Tc(I) complexes as isostructural optical and nuclear probes for imaging prostate cancer. Nucl Med Biol 2019. [DOI: 10.1016/s0969-8051(19)30264-1] [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: 10/26/2022]
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Yazdani A. To Become a Better Surgeon: Why Trainees Enter Advanced Training Programs in Endoscopic Surgery. J Minim Invasive Gynecol 2018. [DOI: 10.1016/j.jmig.2018.09.086] [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: 10/28/2022]
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Barton KR, Yazdani A, Ayer N, Kalvapalle S, Brown S, Stapleton J, Brown DG, Harrigan KA. Erratum to: The Effect of Losses Disguised as Wins and Near Misses in Electronic Gaming Machines: A Systematic Review. J Gambl Stud 2017; 33:1261. [PMID: 28577047 DOI: 10.1007/s10899-017-9696-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- K R Barton
- Department of Psychology, University of Waterloo, Waterloo, Canada.
| | - A Yazdani
- Department of Kinesiology, University of Waterloo, Waterloo, Canada
| | - N Ayer
- Department of Recreation and Leisure Studies, University of Waterloo, Waterloo, Canada
| | - S Kalvapalle
- Department of Psychology, University of Waterloo, Waterloo, Canada.,Gambling Research Lab, University of Waterloo, Waterloo, Canada
| | - S Brown
- University of Waterloo Library, Waterloo, Canada
| | - J Stapleton
- University of Waterloo Library, Waterloo, Canada
| | - D G Brown
- Gambling Research Lab, University of Waterloo, Waterloo, Canada.,David R. Cheriton School of Computer Science, University of Waterloo, Waterloo, Canada
| | - K A Harrigan
- Gambling Research Lab, University of Waterloo, Waterloo, Canada.
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Bahrami SB, Tolg C, Peart T, Symonette C, Veiseh M, Umoh JU, Holdsworth DW, McCarthy JB, Luyt LG, Bissell MJ, Yazdani A, Turley EA. Receptor for hyaluronan mediated motility (RHAMM/HMMR) is a novel target for promoting subcutaneous adipogenesis. Integr Biol (Camb) 2017; 9:223-237. [PMID: 28217782 DOI: 10.1039/c7ib00002b] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hyaluronan, CD44 and the Receptor for Hyaluronan-Mediated Motility (RHAMM, gene name HMMR) regulate stem cell differentiation including mesenchymal progenitor differentiation. Here, we show that CD44 expression is required for subcutaneous adipogenesis, whereas RHAMM expression suppresses this process. We designed RHAMM function blocking peptides to promote subcutaneous adipogenesis as a clinical and tissue engineering tool. Adipogenic RHAMM peptides were identified by screening for their ability to promote adipogenesis in culture assays using rat bone marrow mesenchymal stem cells, mouse pre-adipocyte cell lines and primary human subcutaneous pre-adipocytes. Oil red O uptake into fat droplets and adiponectin production were used as biomarkers of adipogenesis. Positive peptides were formulated in either collagen I or hyaluronan (Orthovisc) gels then assessed for their adipogenic potential in vivo following injection into dorsal rat skin and mammary fat pads. Fat content was quantified and characterized using micro CT imaging, morphometry, histology, RT-PCR and ELISA analyses of adipogenic gene expression. Injection of screened peptides increased dorsal back subcutaneous fat pad area (208.3 ± 10.4 mm2versus control 84.11 ± 4.2 mm2; p < 0.05) and mammary fat pad size (45 ± 11 mg above control background, p = 0.002) in female rats. This effect lasted >5 weeks as detected by micro CT imaging and perilipin 1 mRNA expression. RHAMM expression suppresses while blocking peptides promote expression of PPARγ, C/EBP and their target genes. Blocking RHAMM function by peptide injection or topical application is a novel and minimally invasive method for potentially promoting subcutaneous adipogenesis in lipodystrophic diseases and a complementary tool to subcutaneous fat augmentation techniques.
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Affiliation(s)
- S B Bahrami
- Biological Systems and Engineering Division, BioSciences Area, Lawrence Berkeley National Laboratories, 977R225A, Berkeley, CA 94720, USA
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Yazdani A, Dunson DB. A hybrid bayesian approach for genome-wide association studies on related individuals. Bioinformatics 2015; 31:3890-6. [PMID: 26323717 DOI: 10.1093/bioinformatics/btv496] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 08/18/2015] [Indexed: 01/09/2023] Open
Abstract
MOTIVATION Both single marker and simultaneous analysis face challenges in GWAS due to the large number of markers genotyped for a small number of subjects. This large p small n problem is particularly challenging when the trait under investigation has low heritability. METHOD In this article, we propose a two-stage approach that is a hybrid method of single and simultaneous analysis designed to improve genomic prediction of complex traits. In the first stage, we use a Bayesian independent screening method to select the most promising SNPs. In the second stage, we rely on a hierarchical model to analyze the joint impact of the selected markers. The model is designed to take into account familial dependence in the different subjects, while using local-global shrinkage priors on the marker effects. RESULTS We evaluate the performance in simulation studies, and consider an application to animal breeding data. The illustrative data analysis reveals an encouraging result in terms of prediction performance and computational cost.
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Affiliation(s)
- A Yazdani
- Human Genetic Center, University of Texas at Houston Health Science Center, Houston, USA and
| | - D B Dunson
- Department of Statistical Science, Duke University, Durham, North Carolina USA
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Abstract
Causal analyses and causal inference is a growing area of biostatics. In parallel, there is increasing focus on using genomic information to guide medical practice, i.e. personalized medicine or decision medicine. This perspective discusses causal inference in the context of personalized or decision medicine, including the assumptions and the concept that the task is different depending on whether the primary goal is the average response of treatment in the population or the ability to characterize the response for an individual or a subgroup. This perspective provides a tutorial of modern causal inference and then provides suggestions how application of specific kinds of causal inference would promote advances in translational sciences. The concept of the subpopulation causal effect is one path toward improved decision medicine. A dataset containing cardiovascular disease risk factor levels and genomic information is analyzed and different causal effects are estimated.
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Affiliation(s)
- A Yazdani
- Human Genetics Center, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - E Boerwinkle
- Human Genetics Center, University of Texas Health Science Center at Houston, Houston, TX, USA
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Yazdani A, Normandie M, Yousefi M, Saidi M, Ahmadi G. Transport and deposition of pharmaceutical particles in three commercial spacer–MDI combinations. Comput Biol Med 2014; 54:145-55. [DOI: 10.1016/j.compbiomed.2014.08.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Revised: 07/24/2014] [Accepted: 08/01/2014] [Indexed: 11/26/2022]
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Kamali Sarvestani N, Yazdani A, Ketabi SA. The effect of pressure-induced structural transition on exchange interaction function and electronic structure in Gd-element. Phys Chem Chem Phys 2014; 16:25191-8. [DOI: 10.1039/c4cp04242e] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jamal M, Sarvestani NK, Yazdani A, Reshak AH. Mechanical and thermodynamical properties of hexagonal compounds at optimized lattice parameters from two-dimensional search of the equation of state. RSC Adv 2014. [DOI: 10.1039/c4ra09358e] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Nadj-Perge S, Drozdov IK, Li J, Chen H, Jeon S, Seo J, MacDonald AH, Bernevig BA, Yazdani A. Observation of Majorana fermions in ferromagnetic atomic chains on a superconductor. Science 2014; 346:602-7. [DOI: 10.1126/science.1259327] [Citation(s) in RCA: 1385] [Impact Index Per Article: 138.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Misra S, Zhou BB, Drozdov IK, Seo J, Urban L, Gyenis A, Kingsley SCJ, Jones H, Yazdani A. Design and performance of an ultra-high vacuum scanning tunneling microscope operating at dilution refrigerator temperatures and high magnetic fields. Rev Sci Instrum 2013; 84:103903. [PMID: 24182125 DOI: 10.1063/1.4822271] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We describe the construction and performance of a scanning tunneling microscope capable of taking maps of the tunneling density of states with sub-atomic spatial resolution at dilution refrigerator temperatures and high (14 T) magnetic fields. The fully ultra-high vacuum system features visual access to a two-sample microscope stage at the end of a bottom-loading dilution refrigerator, which facilitates the transfer of in situ prepared tips and samples. The two-sample stage enables location of the best area of the sample under study and extends the experiment lifetime. The successful thermal anchoring of the microscope, described in detail, is confirmed through a base temperature reading of 20 mK, along with a measured electron temperature of 250 mK. Atomically resolved images, along with complementary vibration measurements, are presented to confirm the effectiveness of the vibration isolation scheme in this instrument. Finally, we demonstrate that the microscope is capable of the same level of performance as typical machines with more modest refrigeration by measuring spectroscopic maps at base temperature both at zero field and in an applied magnetic field.
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Affiliation(s)
- S Misra
- Department of Physics and Joseph Henry Laboratories, Princeton University, Princeton, New Jersey 08544, USA
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Abstract
The use of fillers for nonsurgical rhinoplasty has advanced in both materials and methods, and continues to gain popularity in North America. This technique is most often used for secondary revisions, although reports of fillers used in primary rhinoplasty in selected patients have been recently described. The present report details the use of a hyaluronic acid dermal filler in a young Middle Eastern man for a post-traumatic crooked nose deformity. Primary correction of the patient's right-sided nasal bone deviation using hyaluronic acid as a soft tissue filler was achieved with excellent results and patient satisfaction. The current use of fillers in nasal contouring is reviewed.
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Affiliation(s)
- J R Piggott
- Victoria Hospital, London Health Sciences Centre, London, Ontario
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Misra S, Urban L, Kim M, Sambandamurthy G, Yazdani A. Measurements of the magnetic-field-tuned conductivity of disordered two-dimensional Mo43Ge57 and InOx superconducting films: evidence for a universal minimum superfluid response. Phys Rev Lett 2013; 110:037002. [PMID: 23373945 DOI: 10.1103/physrevlett.110.037002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Indexed: 06/01/2023]
Abstract
Our measurements of the low frequency ac conductivity in strongly disordered two-dimensional films near the magnetic-field-tuned superconductor-to-insulator transition show a sudden drop in the phase stiffness of superconducting order with either increased temperature or magnetic field. Surprisingly, for two different material systems, the abrupt drop in the superfluid density in a magnetic field has the same universal value as that expected for a Berezinskii-Kosterlitz-Thouless transition in a zero magnetic field. The characteristic temperature at which phase stiffness is suddenly lost can be tuned to zero at a critical magnetic field, following a power-law behavior with a critical exponent consistent with that obtained in previous dc transport studies on the dissipative side of the transition.
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Affiliation(s)
- S Misra
- Joseph Henry Laboratories and Department of Physics, Princeton University, Princeton, New Jersey 08544, USA
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Kao R, Rajagopalan A, Beckett A, Beckett A, Rex R, Shah S, Waddell J, Boitano M, Faidi S, Babatunde O, Lawson F, Grant A, Sudarshan M, Sudarshan M, Takashashi M, Waggott M, Lampron J, Post A, Beale E, Bobrovitz N, Zakrison T, Smith A, Bawazeer M, Evans C, Leeper T, Kagedan D, Grenier T, Rezendo-Neto J, Roberts D, Roberts D, Stark P, Berg R, Mehta S, Gardner P, Moore L, Vassilyadi M, Moore L, Moore L, Hoshizaki B, Rezende-Neto J, Slaba I, Ramesh A, Grigorovich A, Parry N, Pajak C, Rosenbloom B, Grunfeld A, van Heest R, Fernandes J, Doucet J, Schooler S, Ali J, Klassen B, Santana M, McFarlan A, Ball C, Blackmore C, Rezende-Neto J, Kidane B, Hicks C, Brennan M, Brennan M, Harrington A, Sorvari A, Stewart TC, Biegler N, Chaubey V, Tsang B, Benjamin S, Hogan A, Fraser J, Martin M, Bridge J, Faidi S, Waligora M, Hsiao M, Sharma S, Sankarankutty A, Mckee J, Mckee J, Mckee J, Snider C, Szpakowski J, Brown R, Shah S, Shiu M, Chen M, Bell N, Besserer F, Bell N, Trudeau MO, Alhabboubi M, Rezende-Neto J, Rizoli S, Hill A, Joseph B, Lawless B, Jiao X, Xenocostas A, Rui T, Parry N, Driman D, Martin C, Stewart TC, Walsh J, Parry N, Merritt N, Elster E, Tien H, Phillips L, Bratu I, Nascimento B, Pinto R, Callum J, Tien H, Rizoli S, McMullan J, McGlasson R, Mahomed N, Flannery J, Bir C, Baillie F, Coates A, Asiri S, Foster P, Baillie F, Bhandari M, Phillips L, Bratu I, Schuurman N, Oliver L, Nathens A, Yazdani A, Alhabboubi M, St. Louis E, Tan X, Fata P, Deckelbaum D, Chughtai T, Razek T, Khwaja K, St. Louis E, Alhabboubi M, Tan X, Fata P, Deckelbaum D, Chughtai T, Razek T, Khwaja K, Takada M, Sawano M, Ito H, Tsutsumi H, Keenan A, Waggott M, Hoshizaki B, Brien S, Gilchrist M, Janis J, Phelan H, Minei J, Santana M, Stelfox H, McCredie V, Leung E, Garcia G, Rizoli S, Nathens A, Dixon E, Niven D, Kirkpatrick A, Feliciano D, D’Amours S, Ball C, Ahmed N, Izadi H, McFarlan A, Nathens A, Pavenski K, Nathens A, Bridge J, Tallon J, Leeper W, Vogt K, Stewart TC, Gray D, Parry N, Ameer A, Alhabboubi M, Alzaid S, Deckelbaum D, Fata P, Khwaja K, Razek T, Deckelbaum D, Drudi L, Boulva K, Rodrigue N, Khwaja K, Chughtai T, Fata P, Razek T, Rizoli S, Carreiro P, Lisboa T, Winter P, Ribeiro E, Cunha-Melo J, Andrade M, Zygun D, Grendar J, Ball C, Robertson H, Ouellet JF, Cheatham M, Kirkpatrick A, Ball C, Ouellet JF, McBeth P, Kirkpatrick A, Dixon E, Groff P, Inaba K, Okoye O, Pasley J, Demetriades D, Al-Harthi F, Cheng A, Lalani A, Mikrogianakis A, Cayne S, Knittel-Keren D, Gomez M, Stelfox H, Turgeon A, Lapointe J, Bourgeois G, Karton C, Rousseau P, Hoshizaki B, Stelfox H, Turgeon A, Bourgeois G, Lapointe J, Stelfox H, Turgeon A, Bourgeois G, Lapointe J, Rousseau P, Braga B, Faleiro R, Magaldi M, Cardoso G, Lozada W, Duarte L, Rizoli S, Ball C, Oddone-Paolucci E, Doig C, Kortbeek J, Gomez M, Fish J, Leach L, Leelapattana P, Fleming J, Bailey C, Nolan B, DeMestral C, McFarlan A, Zakirova R, Nathens A, Dabbs J, Duff D, Michalak A, Mitchell L, Nathens A, Singh M, Topolovec-Vranic J, Tymianski D, Yetman L, Canzian S, MacPhail I, Constable L, van Heest R, Tam A, Mahadevan P, Kim D, Bansal V, Casola G, Coimbra R, Gladwin C, Misra M, Kumar S, Gautam S, Sorvari A, Blackwood B, Coates A, Baillie F, Stelfox H, Nathens A, Wong C, Straus S, Haas B, Lenartowicz M, Parkovnick M, Parry N, Inaba K, Dixon E, Salim A, Pasley J, Kirkpatrick A, Ouellet JF, Niven D, Kirkpatrick A, Ball C, Neto C, Nogueira G, Fernandes M, Almeida T, de Abreu EMS, Rizoli S, Abrantes W, Taranto V, Parry N, Forbes T, Knight H, Keenan A, Yoxon H, Macpherson A, Bridge J, Topolovec-Vranic J, Mauceri J, Butorac E, Ahmed N, Holmes J, Gilliland J, Healy M, Tanner D, Polgar D, Fraser D, McBeth P, Crawford I, Tiruta C, Ball C, Kirkpatrick A, Roberts D, Ferri M, Bobrovitz N, Khandwala F, Stelfox H, Widder S, Mckee J, Hogan A, Benjamin S, Atkinson P, Benjamin S, Watson I, Hogan A, Benjamin S, Woodford S, Jaramillo DG, Nathens A, Alonazi N, Coates A, Baillie F, Zhang C, McFarlan A, Sorvari A, Chalklin K, Canzian S, Nathens A, DeMestral C, Hill A, Langer J, Nascimento B, Alababtain I, Fung SY, Passos E, Luz L, Brnjac E, Pinto R, Rizoli S, Widder S, Widder S, Widder S, Nathens A, Van Heest R, Constable L, Mancini F, Heidary B, Bell N, Appleton L, Hennecke P, Taunton J, Khwaja K, O’Connor M, Hameed M, Garraway N, Simons R, Evans D, Taulu T, Quinn L, Kuipers D, Rizoli S, Rogers C, Geerts W, Rhind S, Rizoli S, George K, Quinn L, Babcock C, Hameed M, Simons R, Caron N, Hameed M, Simons R, Prévost F, Razek T, Khwaja K, Sudarshan M, Razek T, Fata P, Deckelbaum D, Khwaja K, de Abreu EMS, Neto C, Almeida T, Pastore M, Taranto V, Fernandes M, Rizoli S, Nascimento B, Sankarankutty A, Pinto R, Callum J, Tremblay L, Tien H, Fowler R, Pinto R, Nathens A, Sadoun M, Harris J, Friese R, Kulvantunyou N, O’Keeffe T, Wynne J, Tang A, Green D, Rhee P, Trpkovski J, Blount V. Trauma Association of Canada Annual Scientific Meeting abstractsErythroopoietin resuscitated with normal saline, Ringer’s lactate and 7.5% hypertonic saline reduces small intestine injury in a hemorrhagic shock and resuscitation rat model.Analgesia in the management of pediatric trauma in the resuscitative phase: the role of the trauma centre.Multidisciplinary trauma team care in Kandahar, Afghanistan: current injury patterns and care practices.Does computed tomography for penetrating renal injury reduce renal exploration? An 8-year review at a Canadian level 1 trauma centre.The other side of pediatric trauma: violence and intent injury.Upregulation of activated protein C leads to factor V deficiency in early trauma coagulopathy.A provincial integrated model of improved care for patients following hip fracture.Sports concussion: an Olympic boxing model comparing sex with biomechanics and traumatic brain injury.A multifaceted quality improvement strategy to optimize monitoring and management of delirium in trauma patients: results of a clinician survey.Risk factors for severe all-terrain vehicle injuries in Alberta.Evaluating potential spatial access to trauma centre care by severely injured patients.Incidence of brain injury in facial fractures.Surgical outcomes and the acute care surgery service.The acute care general surgery population and prognostic factors for morbidity and mortality.Disaster preparedness of trauma.What would you like to know and how can we help you? Assessing the needs of regional trauma centres.Posttraumatic stress disorder screening for trauma patients at a level 1 trauma centre.Physical and finite element model reconstruction of a subdural hematoma event.Abdominal wall reconstruction in the trauma patient with an open abdomen.Development and pilot testing of a survey to measure patient and family experiences with injury care.Occult shock in trauma: What are Canadian traumatologists missing?Timeliness in obtaining emergent percutaneous procedures for the severely injured patient: How long is too long?97% of massive transfusion protocol activations do not include a complete hemorrhage panel.Trauma systems in Canada: What system components facilitate access to definitive care?The role of trauma team leaders in missed injuries: Does specialty matter?The adverse consequences of dabigatran among trauma and acute surgical patients.A descriptive study of bicycle helmet use in Montréal.Factor XIII, desmopressin and permissive hypotension enhance clot formation compared with normotensive resuscitation: uncontrolled hemorrhagic shock model.Negative pressure wound therapy for critically ill adults with open abdominal wounds: a systematic review.The “weekend warrior:” Fact or fiction for major trauma?Canadian injury preventon curriculum: a means to promote injury prevention.Penetrating splenic trauma: Safe for nonoperative management?The pediatric advanced trauma life support course: a national initiative.The effectiveness of a psycho-educational program among outpatients with burns or complex trauma.Trauma centre performance indicators for nonfatal outcomes: a scoping review.The evaluation of short track speed skating helmet performance.Complication rates as a trauma care performance indicator: a systematic review.Unplanned readmission following admission for traumatic injury: When, where and why?Reconstructions of concussive impacts in ice hockey.How does head CT correlate with ICP monitoring and impact monitoring discontinuation in trauma patients with a Marshall CT score of I–II?Impact of massive transfusion protocol and exclusion of plasma products from female donors on outcome of trauma patients in Calgary region of Alberta Health Services.Primary impact arthrodesis for a neglected open Weber B ankle fracture dislocation.Impact of depression on neuropsychological functioning in electrical injury patients.Predicting the need for tracheostomy in patients with cervical spinal cord injury.Predicting crumping during computed tomography imaging using base deficit.Feasibility of using telehomecare technology to support patients with an acquired brain injury and family care-givers.Program changes impact the outcomes of severely injured patients.Do trauma performance indicators accurately reflect changes in a maturing trauma program?One-stop falls prevention information for clinicians: a multidisciplinary interactive algorithm for the prevention of falls in older adults.Use of focused assessment with sonography for trauma (FAST) for combat casualties in forward facilities.Alberta All-terrain Vehicle Working Group: a call to action.Observations and potential role for the rural trauma team development course (RTTDC) in India.An electronic strategy to facilitate information-sharing among trauma team leaders.Development of quality indicators of trauma care by a consensus panel.An evaluation of a proactive geriatric trauma consultation service.Celebrity injury-related deaths: Is a gangster rapper really gangsta?Prevention of delirium in trauma patients: Are we giving thiamine prophylaxis a fair chance?Intra-abdominal injury in patients who sustain more than one gunshot wound to the abdomen: Should non-operative management be used?Retrospective review of blunt thoracic aortic injury management according to current treatment recommendations.Telemedicine for trauma resuscitation: developing a regional system to improve access to expert trauma care in Ontario.Comparing trauma quality indicator data between a pediatric and an adult trauma hospital.Using local injury data to influence injury prevention priorities.Systems saving lives: a structured review of pediatric trauma systems.What do students think of the St. Michael’s Hospital ThinkFirst Injury Prevention Strategy for Youth?An evidence-based method for targeting a shaken baby syndrome prevention media campaign.The virtual mentor: cost-effective, nurse-practitioner performed, telementored lung sonography with remote physician guidance.Quality indicators used by teaching versus nonteaching international trauma centres.Compliance to advanced trauma life support protocols in adult trauma patients in the acute setting.Closing the quality improvement loop: a collaborative approach.National Trauma Registry: “collecting” it all in New Brunswick.Does delay to initial reduction attempt affect success rates for anterior shoulder dislocation (pilot study)?Use of multidisciplinary, multi-site morbidity and mortality rounds in a provincial trauma system.Caring about trauma care: public awareness, knowledge and perceptions.Assessing the quality of admission dictation at a level 1 trauma centre.Trauma trends in older adults: a decade in review.Blunt splenic injury in patients with hereditary spherocytosis: a population-based analysis.Analysis of trauma team activation in severe head injury: an institutional experience.ROTEM results correlate with fresh frozen plasma transfusion in trauma patients.10-year trend of assault in Alberta.10-year trend in alcohol use in major trauma in Alberta.10-year trend in major trauma injury related to motorcycles compared with all-terrain vehicles in Alberta.Referral to a community program for youth injured by violence: a feasibility study.New impaired driving laws impact on the trauma population at level 1 and 3 trauma centres in British Columbia, Canada.A validation study of the mobile medical unit/polyclinic team training for the Vancouver 2010 Winter Games.Inferior vena cava filter use in major trauma: the Sunny-brook experience, 2000–2011.Relevance of cellular microparticles in trauma-induced coagulopathy: a systemic review.Improving quality through trauma centre collaboratives.Predictors of acute stress response in adult polytrauma patients following injury.Patterns of outdoor recreational injury in northern British Columbia.Risk factors for loss-to-follow up among trauma patients include functional, socio-economic, and geographic determinants: Would mandating opt-out consent strategies minimize these risks?Med-evacs and mortality rates for trauma from Inukjuak, Nunavik, Quebec.Review of open abdomens in McGill University Health Centre.Are surgical interventions for trauma associated with the development of posttraumatic retained hemothorax and empyema?A major step in understanding the mechanisms of traumatic coagulopathy: the possible role of thrombin activatable fibrinolysis inhibitor.Access to trauma centre care for patients with major trauma.Repeat head computed tomography in anticoagulated traumatic brain injury patients: still warranted.Improving trauma system governance. Can J Surg 2012. [DOI: 10.1503/cjs.006312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Yazdani A, Poorbaghi SL, Habibi H, Nazifi S, Rahmani Far F, Sepehrimanesh M. Dietary Berberis vulgaris extract enhances intestinal mucosa morphology in the broiler chicken (Gallus gallus). ACTA ACUST UNITED AC 2012. [DOI: 10.1007/s00580-012-1454-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Dul EC, van Ravenswaaij-Arts CMA, Groen H, van Echten-Arends J, Land JA, Tyulenev Y, Naumenko V, Kurilo L, Shileiko L, Segal A, Klimova R, Kushch A, Ribas-Maynou J, Garcia-Peiro A, Abad C, Amengual MJ, Benet J, Navarro J, Colasante A, Lobascio AM, Scarselli F, Minasi MG, Alviggi E, Rubino P, Casciani V, Pena R, Varricchio MT, Litwicka K, Ferrero S, Zavaglia D, Franco G, Nagy ZP, Greco E, Romany L, Meseguer M, Garcia-Herrero S, Pellicer A, Garrido N, Dam A, Pijnenburg A, Hendriks JC, Westphal JR, Ramos L, Kremer JAM, Eertmans F, Bogaert V, Puype B, Geisler W, Clusmann C, Klopsch I, Strowitzki T, Eggert-Kruse W, Maettner R, Isachenko E, Isachenko V, Strehler E, Sterzik K, Band G, Madgar I, Brietbart H, Naor Z, Cunha-Filho JS, Souza CA, Krebs VG, Santos KD, Koff WJ, Stein A, Hammoud I, Albert M, Bergere M, Bailly M, Boitrelle F, Vialard F, Wainer R, Izard V, Selva J, Cohen - Bacrie P, Belloc S, de mouzon J, Cohen-Bacrie M, Alvarez S, Junca AM, Dumont M, Douard S, Prisant N, Tomita K, Hashimoto S, Akamatsu Y, Satoh M, Mori R, Inoue T, Ohnishi Y, Ito K, Nakaoka Y, Morimoto Y, Smith VJH, Ahuja KK, Atig F, Raffa M, Sfar MT, Saad A, Ajina M, Braga DPAF, Halpern G, Figueira RCS, Setti AS, Iaconelli Jr. A, Borges Jr. E, Medeiros GS, Borges Jr. E, Pasqualotto EB, Pasqualotto FF, Nadalini M, Tarozzi N, Di Santo M, Borini A, Lopez-Fernandez C, Arroyo F, Caballero P, Nunez-Calonge R, Fernandez JL, Gosalvez J, Gosalvez J, Lopez-Fernandez C, Gosalbez A, Cortes S, Caballero P, Nunez-Calonge R, Zikopoulos K, Lazaros L, Vartholomatos G, Kaponis A, Makrydimas G, Plachouras N, Sofikitis N, Kalantaridou S, Hatzi E, Georgiou I, Belloc S, de Mouzon J, Cohen-Bacrie M, Junca AM, Dumont M, Amar E, Cohen-Bacrie P, Vuillaume ML, Brugnon F, Artonne C, Janny L, Pons-Rejraji H, Fedder J, Bosco L, Ruvolo G, Bruccoleri AM, Manno M, Roccheri MC, Cittadini E, Bochev I, Gavrilov P, Kyurkchiev S, Shterev A, Carlomagno G, Colone M, Condorelli RA, Stringaro A, Calogero AE, Zakova J, Kralikova M, Crha I, Ventruba P, Melounova J, Matejovicova M, Vodova M, Lousova E, Sanchez Toledo M, Alvarez LLeo C, Garcia Garrido C, Resta Serra M, Belmonte Andujar LL, Gonzalez de Merlo G, Crha I, Zakova J, Ventruba P, Lousova E, Pohanka M, Huser M, Amiri I, Karimi J, Goodarzi MT, Tavilani H, Filannino A, Magli MC, Boudjema E, Crippa A, Ferraretti AP, Gianaroli L, Robles F, Magli MC, Crippa A, Filannino A, Ferraretti AP, Gianaroli L, Huang H, Yao DJ, Huang HJ, Li JR, Fan SK, Wang ML, Yung-Kuei S, Amer S, Mahran A, Darne J, Shaw R, Boudjema E, Magli MC, Borghi E, Cetera C, Ferraretti AP, Gianaroli L, Shukla U, Ogutu D, Deval B, Jansa M, Savvas M, Narvekar N, Houska P, Dackland AL, Bjorndahl L, Kvist U, Crippa A, Magli MC, Muzii L, Barboni B, Ferraretti AP, Gianaroli L, Samanta L, Kar S, Yakovenko SA, Troshina MN, Rutman BK, Dyakonov SA, Holmes E, Bjorndahl L, Kvist U, Feijo C, Verza Junior S, Esteves SC, Berta CL, Caille AM, Ghersevich SA, Zumoffen C, Munuce MJ, San Celestino M, Agudo D, Alonso M, Sanjurjo P, Becerra D, Bronet F, Garcia-Velasco JA, Pacheco A, Lafuente R, Lopez G, Checa MA, Carreras R, Brassesco M, Oneta M, Savasi V, Parrilla B, Guarneri D, Laureti A, Pagano F, Cetin I, Ekwurtzel E, Bjorndahl L, Kvist U, Morgante G, Piomboni P, Stendardi A, Serafini F, De Leo V, Focarelli R, Dumont M, Belloc S, Junca AM, Benkhalifa M, Cohen-Bacrie M, De Mouzon J, Entezami F, Cohen-Bacrie P, Junca A, Belloc S, Dumont M, Cohen-Bacrie M, Benkhalifa M, De Mouzon JJ, Entezami F, Cohen-Bacrie P, Mangiarini A, Capitanio E, Paffoni A, Restelli L, Guarneri C, Scarduelli C, Ragni G, Harrison K, Irving J, Martin N, Sherrin D, Yazdani A, Almeida C, Correia S, Rocha E, Alves A, Cunha M, Ferraz L, Silva S, Sousa M, Barros A, Perdrix A, Travers A, Milazzo JP, Clatot F, Mousset-Simeon N, Mace B, Rives N, Clarke HS, Callow A, Saxton D, Pacey AA, Sapir O, Oron G, Ben-Haroush A, Garor R, Feldberg D, Pinkas H, Stein A, Wertheimer A, Fisch B, Palacios E, Gonzalvo MC, Clavero A, Ramirez JP, Rosales A, Mozas J, Bjorndahl L, Castilla JA, Mugica J, Ramon O, Valdivia A, Exposito A, Casis L, Matorras R, Bongers R, Gottardo F, Zitzmann M, Kliesch S, Cordes T, Kamischke A, Schultze-Mosgau A, Buendgen N, Diedrich K, Griesinger G, Crisol L, Aspichueta F, Exposito A, Hernandez ML, Ruiz-Sanz JI, Mendoza R, Matorras R, Sanchez-Tusie AA, Bermudez A, Lopez P, Churchill GC, Trevino CL, Maldonado I, Dabbah J. POSTER VIEWING SESSION - ANDROLOGY. Hum Reprod 2011. [DOI: 10.1093/humrep/26.s1.75] [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: 11/14/2022] Open
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Piggott JR, Yazdani A. Hyaluronic acid used for the correction of nasal deviation in an 18-year-old Middle Eastern man. Plast Surg (Oakv) 2011. [DOI: 10.4172/plastic-surgery.1000711] [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: 11/09/2022] Open
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Bonyadian M, Momtaz H, Rahimi E, Habibian R, Yazdani A, Zamani M. Identification & characterization of Shiga toxin-producing Escherichia coli isolates from patients with diarrhoea in Iran. Indian J Med Res 2010; 132:328-331. [PMID: 20847380] [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: 05/29/2023] Open
Abstract
BACKGROUND & OBJECTIVES Verotoxigenic Escherichia coli are important serotypes of enterohaemorrhagic E. coli (EHEC) subgroup that cause attaching and effacing lesions in enterocytes by producing verotoxins or shiga-like toxins resulting in haemorrhagic colitis (HC) and haemolytic uremic syndrome (HUS). The aim of this study was to detect these serotypes specially E. coli O157:H7 in stool samples of patients with diarrhoea and identification of virulence genes (STX1, STX2, Hly and EAE) in Shahrekord-Iran area using PCR technique. METHODS Two hundred diarrhoeal stool samples of patients were collected through 2007-2008. Microbiological and biochemical examinations were done to detect the E. coli. Serological tests carried out to identify the O157 or O157:H7 serotypes. RESULTS Of the 58 E. coli isolates, 16 (27.6%) were detected as STX1 carrying E. coli, four (6.9%) carrying STX2, eight (13.8%) carrying both STX1 and STX2, and 12 (20.7%) were Hly carrying E. coli, but none of the isolates contained EAE gene. None of the isolates were E. coli O157 or O157:H7 serotypes. INTERPRETATION & CONCLUSIONS Our results revealed that verotoxigenic E. coli isolates other than O157 serotype were involved in causing diarrhoea in Shahrekord-Iran.
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Affiliation(s)
- M Bonyadian
- Faculty of Veterinary Medicine, Institute of Zoonoses Research, Shahrekord University, Shahrekord-Iran
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Matsumoto Y, Goto S, Hashimoto H, Kokeguchi S, Shiotani M, Okada H, Cohen - Bacrie P, Hazout A, Belloc S, De Mouzon J, Menezo Y, Dumont M, Junca AM, Cohen-Bacrie M, Alvarez S, Olivennes F, Prisant N, Weltin M, Geissler W, Clussmann C, Strowitzki T, Eggert-Kruse W, Endou Y, Fjii Y, Motoyama H, Quintana FQ, Zaloa Larreategui ZL, Iratxe Penalba IP, Sara Ortega SO, Monica Martin MM, Guillermo Quea GQ, Jose Serna JS, Showell MG, Brown J, Yazdani A, Stankiewicz MT, Hart RJ, Zumoffen C, Munuce MJ, Caille A, Ghersevich S, Lendinez AM, Perez-Nevot B, Palomares AR, Serrano Garballo A, Rodriguez A, Reche A, Mayor-Olea A, Ruiz-Galdon M, Reyes-Engel A, Mendiola J, Jorgensen N, Andersson AM, Calafat AM, Redmon JB, Drobnis EZ, Wang C, Sparks A, Thurston SW, Liu F, Swan SH, Tarasconi AC, Tarasconi BV, Tarasconi DV, Silva EMV, Fujii Y, Endou Y, Motoyama H, Crha I, Pribyl J, Skladal P, Zakova J, Ventruba P, Pohanka M, De La Fuente G, Pacheco A, Velasco JAG, Requena A, Pacheco Castro A, San Celestino Carchenilla M, Salvanes R, Arnanz A, Balmori C, Pellicer A, Garcia-Velasco JA, Hashimoto H, Ishikawa T, Goto S, Kokeguchi S, Fujisawa M, Shiotani M, Kranz S, Hersemeyer K, Hentrich A, Tinneberg HR, Konrad L, Simon L, Lutton D, McManus J, Lewis SEM, San Celestino Carchenilla M, Pacheco Castro A, Rubio S, Simon Sanjurjo P, Pellicer A, Garcia-Velasco JA, Lewis S, Lutton D, McManus J, Simon L, Buzzi J, Valcarcel A, Lombardi E, Oses R, Rawe V, Young E, Magendzo A, Lizama S, Duque G, Mackenna A, Lutton D, Simon L, McManus J, Lewis SEM, Monqaut A, Zavaleta C, Lopez G, Lafuente R, Brassesco M, Condorelli R, La Vignera S, La Rosa S, Barone N, Vicari E, Bellanca S, D'Agata R, Calogero AE, Enciso M, Iglesias M, Galan I, Gosalvez A, Gosalvez J, Curaba M, Poels J, Van Langendonckt A, Donnez J, Wyns C, Garcez M, Salvador M, Pasqualotto EB, Braga DPAF, Borges E, Pasqualotto FF, Aoki T, Figueira RCS, Maldonado LGL, Pasqualotto FF, Iaconelli A, Borges E, Frassini R, Mandelli J, Pasqualotto EB, Borges E, Figueira RCS, Braga DPAF, Pasqualotto FF, Borges E, Pasqualotto FF, Figueira RCS, Setti AS, Braga DPAF, Cortezzi SS, Iaconelli A, La Vignera S, Vicari E, Di Mauro M, Burrello N, Condorelli R, D'Agata R, Calogero AE, Kashir J, Jones C, Young C, Ruas M, Grasa P, Rietdorf K, Heytens E, Heindryckx B, Yoon SY, Fissore RA, Deane CM, Nikiforaki D, Tee ST, de Sutter P, Parrington J, Coward K, Visser L, Westerveld GH, van Daalen SKM, van der Veen F, Lombardi MP, Repping S, Cubillos S, Sanchez S, Pedraza J, Charria G, Aparicio H, Gongora A, Caldino F, Cuneo S, Ou JP, Zhao WE, Liu YF, Xu YW, Zhou CQ, Al-Asmar Pinar N, Peinado V, Gruhn J, Susiarjo M, Gil-Salom M, Martinez-Jabaloyas JM, Pellicer A, Remohi J, Rubio C, Hassold T, Peinado V, Al-Asmar N, Gruhn J, Rodrigo L, Gil-Salom M, Martinez-Jabaloyas JM, Pellicer A, Remohi J, Hassold TJ, Rubio C, Bungum M, Forsell N, Giwercman A, Amiri I, Sheikh N, Najafi R, Godarzi M, Farimani M, Makukh H, Tyrkus M, Zastavna D, Nakonechnuy A, Khayat SS, Schileiko LV, Kurilo LF, Garcia-Herrero S, Garrido N, Martinez-Conejero JA, Romany L, Pellicer A, Meseguer M, Dorphin B, Lefevre M, Gout C, Oger P, Yazbeck C, Rougier N, De Stefani S, Scala V, Benedetti S, Tagliamonte MC, Zavagnini E, Palini S, Bulletti C, Canestrari F, Subiran N, Pinto FM, Candenas ML, Agirregoitia E, Irazusta J, Cha EM, Lee JH, Park IH, Lee KH, Kim MH, Jensen MS, Rebordosa C, Thulstrup AM, Toft G, Sorensen HT, Bonde JP, Henriksen TB, Olsen J, Bosco L, Speciale M, Manno M, Amireh N, Roccheri MC, Cittadini E, Wu P, Lee YM, Chen HW, Tzeng CR, Llacer J, Ten J, Lledo B, Rodriguez-Arnedo A, Morales R, Bernabeu R, Garcia-Peiro A, Martinez-Heredia J, Oliver-Bonet M, Ribas J, Abad C, Amengual MJ, Gosalvez J, Navarro J, Benet J, Moutou C, Gardes N, Nicod JC, Becker N, Bailly MP, Galland I, Pirello O, Rongieres C, Wittemer C, Viville S, Elmahaishi W, Smith B, Doshi A, Serhal P, Harper JC, Rennemeier C, Kammerer U, Dietl J, Staib P, Elgmati K, Nomikos M, Theodoridou M, Calver B, Swann K, Lai FA, Georgiou I, Lazaros L, Xita N, Kaponis A, Plachouras N, Hatzi E, Zikopoulos K, Ferfouri F, Clement P, Molina Gomes D, Albert M, Bailly M, Wainer R, Selva J, Vialard F, Takisawa T, Usui K, Kyoya T, Shibuya Y, Hattori H, Sato Y, Ota M, Kyono K, Chiu PC, Lam KK, Lee CL, Chung MK, Huang VW, O WS, Tang F, Ho PC, Yeung WS, Kim CH, Lee JY, Kim SH, Suh CS, Shin YK, Kang YJ, Jung JH, Cha CY, Hwang ES, Mukaida T, Nagaba M, Takahashi K, Elkaffash D, Sedrak M, Huhtaniemi I, Abdel-Al T, Younan D, Cassuto NG, Bouret D, Hammoud I, Yazbeck C, Barak Y, Seshadri S, Bates M, Vince G, Jones DI, Ben Khalifa M, Montjean D, Menezo Y, Cohen-Bacrie P, Belloc S, De Mouzon J, Alvarez S, Aubriot FX, Olivennes F, Cohen M, Prisant N, Boudjema E, Magli MC, Crippa A, Baccetti B, Ferraretti AP, Gianaroli L, Singer T, Neri QV, Hu JC, Maggiulli R, Kollman Z, Rauch E, Schlegel PN, Rosenwaks Z, Palermo GD, Zorn B, Skrbinc B, Matos E, Golob B, Pfeifer M, Osredkar J, Sabanegh E, Sharma RK, Thiyagarajan A, Agarwal A, Robin G, Boitrelle F, Marcelli F, Marchetti C, Mitchell V, Dewailly D, Rigot JM, Rives N, Perdrix A, Travers A, Milazzo JP, Mousset-Simeon N, Mace B, Jakab A, Molnar Z, Benyo M, Levai I, Kassai Z, Golob B, Zorn B, Ihan A, Kopitar A, Kolbezen M, Vaamonde D, Da Silva-Grigoletto ME, Garcia-Manso JM, Vaamonde-Lemos R, Oehninger SC, Walis G, Monahan D, Neri QV, Ermolovich E, Rosenwaks Z, Palermo GD, Fadlon E, Abu Elhija A, Abu Elhija M, Lunenfeld E, Huleihel M, Costantini-Ferrando M, Maggiulli R, Neri QV, Hu JCY, Monahan D, Rosenwaks Z, Palermo GD, Alvarez JG, Gosalvez A, Velilla E, Lopez-Teijon M, Lopez-Fernandez C, Gosalvez J, Tempest HG, Sun F, Oliver-Bonet M, Ko E, Turek P, Martin RH, Zomeno-Abellan MT, Ramirez A, Gutierrez-Adan A, Martinez JC, Landeras J, Ballesta J, Aviles M, Lafuente R, Lopez G, Monqaut A, Brassesco M, Ganaiem M, Binder S, Abu Elhija M, Lunenfeld E, Meinhardt A, Huleihel M, Sousa L, Grangeia A, Carvalho F, Sousa M, Barros A, Sifer C, Sermondade N, Hafhouf E, Poncelet C, Benzacken B, Levy R, Wolf JP, Crisol L, Aspichueta F, Hernandez ML, Exposito A, Matorras R, Ruiz-Larrea MB, Ruiz-Sanz JI, Jallad S, Atig F, Ben Amor H, Saad ALI, Kerkeni A, Ajina M, Othmane ALI, Koscinski I, Ladureau L, Wittemer C, Viville S, Scarselli F, Casciani V, Lobascio M, Minasi MG, Rubino P, Colasante A, Arizzi L, Litwicka K, Iammarrone E, Ferrero S, Mencacci C, Franco G, Zavaglia D, Nagy ZP, Greco E, Ohgi S, Takahashi M, Kishi C, Suga K, Yanaihara A, Chamley LW, Wagner A, Shelling AN. Andrology (Male Fertility, Spermatogenesis). Hum Reprod 2010. [DOI: 10.1093/humrep/de.25.s1.001] [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: 11/14/2022] Open
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Hassanpour H, Yazdani A, Soreshjani KK, Asgharzadeh S. Evaluation of endothelial and inducible nitric oxide synthase genes expression in the heart of broiler chickens with experimental pulmonary hypertension. Br Poult Sci 2010; 50:725-32. [PMID: 19946826 DOI: 10.1080/00071660903141005] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
1. To clarify the effect of T(3)-induced pulmonary hypertension on endothelial and inducible nitric oxide synthase (eNOS and iNOS) mRNA expression in the ventricles of the heart, semi quantitative reverse transcription-PCR was performed on total RNAs isolated from broiler chicken hearts after feeding supplementary T(3) (15 mg T3/kg) for 6 weeks. NO metabolites (nitrite/nitrate) of serum were measured. 2. The eNOS and iNOS genes were expressed in the right and left ventricles of control and T(3)-treated broilers at 12, 28 and 49 d of age. The relative amount of eNOS mRNA expression in the right and left ventricles did not significantly differ between control and T(3)-treated broilers at any age. 3. The relative amount of iNOS mRNA expression in the right and left ventricles was lower in T(3)-treated broilers than in control broilers at 49 d of age, but not at 12 or 28 d. 4. The amount of NO metabolites was reduced in the serum of T(3)-treated chickens at 49 d of age when compared with the control. 5. It is concluded that eNOS and iNOS genes are normally expressed in the heart of broilers. It is probable that impaired NO synthesis and reduction of iNOS gene expression in the heart ventricles are involved in the pathophysiology of cardiac function in broilers with pulmonary hypertension.
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Affiliation(s)
- H Hassanpour
- Department of Basic Sciences, Faculty of Veterinary Medicine, Shahrekord University, Saman St., Shahrekord, Iran.
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Hor YS, Williams AJ, Checkelsky JG, Roushan P, Seo J, Xu Q, Zandbergen HW, Yazdani A, Ong NP, Cava RJ. Superconductivity in CuxBi2Se3 and its implications for pairing in the undoped topological insulator. Phys Rev Lett 2010; 104:057001. [PMID: 20366785 DOI: 10.1103/physrevlett.104.057001] [Citation(s) in RCA: 242] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2009] [Indexed: 05/25/2023]
Abstract
Bi2Se3 is one of a handful of known topological insulators. Here we show that copper intercalation in the van der Waals gaps between the Bi2Se3 layers, yielding an electron concentration of approximately 2x10{20} cm{-3}, results in superconductivity at 3.8 K in CuxBi2Se3 for 0.12<or=x<or=0.15. This demonstrates that Cooper pairing is possible in Bi2Se3 at accessible temperatures, with implications for studying the physics of topological insulators and potential devices.
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Affiliation(s)
- Y S Hor
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, USA
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Abstract
Abstract
Solvent-based heavy oil recovery methods are of interest as environmentally friendly alternatives for thermal techniques. The phase behaviour data from a heavy oil/solvent system are important information required for feasibility studies and numerical simulation of such processes. The scarcity of experimental data in the literature is a challenge in modelling of solvent involving processes. The variety of the solvent/oil mixtures, which are being evaluated within ongoing researches such as the VAPEX (vapour extraction of heavy oil) process, requires accurate description of the system's pressure, volume and temperature (PVT) properties.
In this study, an experimental setup was designed to perform a series of PVT experiments and viscosity measurements. The results of the PVT tests conducted with the Frog Lake heavy oil and butane as a solvent are presented. The same oil/solvent pair was used in the VAPEX experiments previously reported by the authors(1, 2). The measurements include the solvent solubility in the oil, mixture density and mixture viscosity at different saturation pressures.
To simulate the phase behaviour of the system, an equation of state (EOS) was tuned using the measured experimental data and a phase behaviour package (WINPROP). The predicted densities and saturation pressures by the EOS are in very good agreement with the experimental data. A mixing viscosity correlation was also tuned with the measured data and found to be representative for describing the viscosity of the system. The viscosity data were compared with the predictions of several other available correlations, and it was shown that Shu's model(3) reproduces acceptable data for reservoir simulation purposes.
Introduction
Solvent-involving recovery processes have recently gained some attention. These processes often involve relatively light hydrocarbon solvents such as C3 - C7, which are sometimes co-injected with non-condensable gases such as CO2, CH4 and N2. Numerical simulation studies of such processes are, however, in early stages to investigate the feasibility of field implementation, improvement and optimization. Numerical modelling of these processes is mostly performed on compositional simulators to capture the potential compositional changes, asphaltene precipitation and diffusion/dispersion mechanisms. Phase behaviour of the heavy oil/solvent system is one of the most vital pieces of input data that can be predicted and produced by either a series of k values or a tuned EOS. Nonetheless, both methods rely on accurate experimental phase behaviour information.
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Yazdani Kachoei M, Karami A, Baradaran S, Shirani M, Yazdani A. UP-2.041: Diagnostic Value of Urine Polymerase Chain Reaction in Genitourinary Tuberculosis. Urology 2009. [DOI: 10.1016/j.urology.2009.07.260] [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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Yazdani Kachoei M, Karami A, Shahrzad B, Yazdani A, Rafati A. MP-20.08: Evaluation of P53 and CD44 as Markers of Tumor Recurrence in Low Risk Superficial Transitional Cell Carcinoma of the Bladder. Urology 2009. [DOI: 10.1016/j.urology.2009.07.769] [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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Yazdani A. Visualizing pair formation on the atomic scale and the search for the mechanism of superconductivity in high-T(c) cuprates. J Phys Condens Matter 2009; 21:164214. [PMID: 21825394 DOI: 10.1088/0953-8984/21/16/164214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We have developed several new experimental techniques, based on the scanning tunneling microscope, to visualize the process of pair formation on the atomic scale and to probe with high precision what controls the strength of pairing in high-T(c) cuprate superconductor compounds. These new experiments provide evidence that pairing in these exotic superconductors occurs above the bulk transition temperature and in nanoscale regions with sizes of 1-3 nm. The high temperature nucleation and proliferation of these nanoscale puddles have a strong connection to the temperature-doping phase diagram of these superconductors. On average we have found that the pairing gap Δ and the temperature at which they first nucleate T(p) follow the simple relation: 2Δ/k(B)T(p)∼8. Moreover, the variations of the pairing strength on the nanoscale can be examined to find microscopic clues to the mechanism of pairing. Specifically, we have found evidence that suggests that strong electronic correlation, as opposed to coupling of electrons to bosons, is responsible for the pairing mechanism in the cuprates. Surprisingly, we have found that nanoscale measurements of electronic correlations in the normal state (at temperatures as high as twice T(c)) can be used to predict the strength of the local pairing interaction at low temperatures.
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Affiliation(s)
- A Yazdani
- Joseph Henry Laboratories and Department of Physics, Princeton University, Princeton, NJ 08540, USA
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Hassanpour H, Zamani Moghaddam AK, Yazdani A, Cheraghchi Bashi M. Evaluation of intestinal morphology and nitric oxide metabolites in broiler chickens supplemented by green tea. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s00580-009-0831-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ataee P, Yazdani A, Setarehdan S, Noubari HA. Manifold learning applied on EEG signal of the epileptic patients for detection of normal and pre-seizure States. ACTA ACUST UNITED AC 2008; 2007:5489-92. [PMID: 18003254 DOI: 10.1109/iembs.2007.4353588] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
In this paper, several Manifold Learning (ML) techniques for dimension reduction of EEG feature vectors are introduced and applied on set of epileptic EEG signals. These include Principal Component Analysis (PCA), Multidimensional Scaling (MDS), Isometric Mapping (ISOMAP) and Locally Linear Embedding (LLE). While EEG signals of epileptic patients contain necessary information with regards to the various brain states of epileptic patients, for extraction of useful information in the EEG signals and for detection, often construction of high-dimensional feature vectors is utilized. Analysis of such high-dimensional feature vectors are complex and time consuming. This paper deals with dimension reduction of the extracted feature vectors and comparative analysis of the performance of several manifold learning techniques as applied on EEG signals of epileptic patients.
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Affiliation(s)
- P Ataee
- Electrical and Computer Engineering, University of Tehran, Iran.
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Abstract
BACKGROUND/AIMS The study of patterns of fingerprints is important in anthropology and medical genetics, chiefly because of their diagnostic usefulness. In the present work, we studied the frequencies of various types of skin ridges of the first phalanx in patients with eczema, psoriasis and alopecia areata. METHODS In a double-blind case-control study, we determined the frequencies of fingerprints in 551 patients (240 cases with eczema, 164 cases with psoriasis and 147 cases with alopecia areata) as well as in general population of Hamadan City (control group: 188 males and 529 females). We compared the frequencies between various fingers, hands and sexes in all three case groups as well as between case groups and control group. RESULTS The frequencies of various types of fingerprints are presented in some tables. The results showed that frequencies are not statistically different according to types of fingers, hands (left or right) and sexes as well. But they are significantly different in various case groups and between case groups and control group. CONCLUSIONS We can conclude that frequencies of various patterns of skin ridges differ in eczema, psoriasis and alopecia areata from normal population.
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Affiliation(s)
- H Pour-Jafari
- Division of Genetics, Medical School, Hamadan, Iran, Department of Genetics and Anthropology, Faculty of Health, Tehran, Iran.
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Misra S, Oh S, Hornbaker DJ, DiLuccio T, Eckstein JN, Yazdani A. Atomic scale imaging and spectroscopy of a CuO(2) plane at the surface of Bi(2)Sr(2)CaCu(2)O(8+delta). Phys Rev Lett 2002; 89:087002. [PMID: 12190493 DOI: 10.1103/physrevlett.89.087002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2002] [Indexed: 05/23/2023]
Abstract
We have used a scanning tunneling microscope to demonstrate that a single CuO2 plane can form a stable and atomically ordered layer at the surface of Bi(2)Sr(2)CaCu(2)O(8+delta). In contrast to previous studies on high-T(c) surfaces, the CuO2-terminated surface exhibits a strongly suppressed tunneling conductance at low voltages. We consider a number of different explanations for this phenomena and propose that it may be caused by how the orbital symmetry of the CuO2 plane's electronic states affects the tunneling process.
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Affiliation(s)
- S Misra
- Department of Physics and Fredrick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA
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Hornbaker DJ, Kahng SJ, Misra S, Smith BW, Johnson AT, Mele EJ, Luzzi DE, Yazdani A. Mapping the one-dimensional electronic States of nanotube peapod structures. Science 2002; 295:828-31. [PMID: 11778011 DOI: 10.1126/science.1068133] [Citation(s) in RCA: 137] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Arrays of C60 molecules nested inside single-walled nanotubes represent a class of nanoscale materials having tunable properties. We report electronic measurements of this system made with a scanning tunneling microscope and demonstrate that the encapsulated C60 molecules modify the local electronic structure of the nanotube. Our measurements and calculations also show that a periodic array of C60 molecules gives rise to a hybrid electronic band, which derives its character from both the nanotube states and the C60 molecular orbitals.
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Affiliation(s)
- D J Hornbaker
- Department of Physics and Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
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31
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Murthy KJ, Frieden TR, Yazdani A, Hreshikesh P. Public-private partnership in tuberculosis control: experience in Hyderabad, India. Int J Tuberc Lung Dis 2001; 5:354-9. [PMID: 11334254] [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: 02/19/2023] Open
Abstract
SETTING Hyderabad, India. OBJECTIVE To determine whether private practitioners and the government can collaborate with a nongovernmental intermediary to implement DOTS effectively. DESIGN A non-profit hospital provided DOTS services to a population of 100000 for 3 years, then expanded coverage to 500000 in October 1998. A hospital physician visited all private practitioners, encouraged them to refer patients, and gave feedback on each patient referred. After diagnosis, patients received directly observed treatment free of charge at the trust hospital or at 30 conveniently located small hospitals operated by local private practitioners. No financial incentives were used to encourage physicians to refer patients or to provide treatment observation. Diagnosis, treatment, and case and outcome definitions were performed as per DOTS policies; medicines and laboratory reagents were provided by the government. RESULTS All 244 allopathic and 114 non-allopathic physicians practising in the area agreed to participate; 59% referred at least one patient. Of 2244 persons referred, 969 (43%) had tuberculosis. Physicians had obtained chest radiographs on 80% of patients before referral for sputum microscopy. The detection rate increased from 50 to 200/100000 over the first 2-3 years of the project, and has increased gradually since expansion; 90% of new smear-positive patients and 77% of re-treatment patients were successfully treated. Compared with those treated at a neighbouring government DOTS centre, patients in this project paid less for diagnosis ($5 vs. $20) and treatment ($1 vs. $11), largely due to lower transport costs. CONCLUSIONS Collaborative efforts between private practitioners and the government can achieve moderate-high rates of case detection and high rates of treatment success. Public-private services appeared to be more convenient to patients, who paid less for care and were less likely to miss work in order to participate in DOTS. Clearly defined roles and expectations and frequent communication are essential to success. An institution such as a non-profit hospital can serve as an effective intermediary between the government DOTS programme and private practitioners.
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Murthy KJ, Yazdani A, Lakshmi KA. Use of oral salbutamol in improving quality sputum microscopy in the DOTS strategy. Int J Tuberc Lung Dis 2000; 4:1191-2. [PMID: 11144467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
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Affiliation(s)
- P Phillips
- Loomis Laboratory of Physics, University of Illinois at Urbana-Champaign, 1100 West Green Street, Urbana, IL 61801-3080, USA
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Abstract
BACKGROUND & AIMS Orphanin FQ (OFQ) is a recently discovered neuropeptide that structurally resembles an opioid peptide. However, the functional role of OFQ in rat gastrointestinal tract remains unknown. METHODS We investigated the effects of OFQ on contractions of muscle strips obtained from different regions of the gastrointestinal tract. Immunohistochemical studies were performed on rat colonic tissue using OFQ antibody. RESULTS OFQ (10(-9) to 10(-7) mol/L) caused significant contractions in the rat colon but not in the stomach or small intestine. Tetrodotoxin, veratridine, and long-term serosal application of benzalkonium chloride completely abolished OFQ-induced colonic contractions without affecting myogenic contractions in response to carbachol. OFQ-induced contractions were not affected by naloxone, atropine, phentolamine, propranolol, methysergide, substance P antagonist, vasoactive intestinal polypeptide antagonist, apamin, and NG-nitro-L-arginine methyl ester. OFQ (10(-9) to 10(-7) mol/L) significantly reduced muscle contractions and 3H-acetylcholine release in response to electrical field stimulation in both the stomach and small intestine but not in the colon. OFQ-immunopositive neuronal fibers were found in the colonic myenteric plexus. CONCLUSIONS These studies indicate that the mechanisms and sites of action of OFQ are region specific. OFQ inhibits cholinergic transmission in the stomach and small intestine, whereas OFQ stimulates colonic contraction possibly by inhibiting an inhibitory neural pathway within the myenteric plexus.
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Affiliation(s)
- A Yazdani
- Division of Gastroenterology, University of Michigan Medical Center, Ann Arbor, Michigan 48109-0362, USA
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Abstract
The local effects of isolated magnetic adatoms on the electronic properties of the surface of a superconductor were studied with a low-temperature scanning tunneling microscope. Tunneling spectra obtained near magnetic adsorbates reveal the presence of excitations within the superconductor's energy gap that can be detected over a few atomic diameters around the impurity at the surface. These excitations are locally asymmetric with respect to tunneling of electrons and holes. A model calculation based on the Bogoliubov-de Gennes equations can be used to understand the details of the local tunneling spectra.
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Affiliation(s)
- A Yazdani
- IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, Ca 95120, USA
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Zhao Z, Yazdani A, Shen Y, Sun Z, Bailey J, Caskey CT, Lee CC. Molecular dissection of a cosmid from a gene-rich region in 17q21 and characterization of a candidate gene for alpha-N-acetylglucosaminidase with two cDNA isoforms. Mamm Genome 1996; 7:686-90. [PMID: 8703123 DOI: 10.1007/s003359900206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A cosmid mapped to human Chromosome (Chr) 17q21, c140c10, was found to contain a CpG island. We completed the sequence analysis of c140c10 because of two considerations: the cosmid contained an STS from the 17-beta-hydroxysteroid dehydrogenase gene (17-HSD), which was believed to be a neighbor of the breast cancer susceptibility gene, BRCA1; CpG islands are usually associated downstream and/or upstream of human genes. Computer-based exon trapping of the cosmid sequence revealed putative additional exons. With two of those exons used as a probe to screen human placental cDNA libraries, two cDNA isoforms for a novel gene, designated as ufHSD, were isolated. The amino acid sequence of the open reading frames of the cDNA showed no significant homology to any protein in the data base. However, it is possible that our cDNAs are from the gene for alpha-acetylglucosaminidase, which has recently been localized to the same region. Northern analyses show that the major isoform is expressed in all tissues tested, with the highest expression in blood leukocytes and lowest in brain. Finally, our study has shown that the 46.7-kb cosmid c140c10 encompasses loci for five genes and pseudo-genes: PsiPTP4A, ufHSD, 17-HSDI, 17-HSDII, and 22A1.
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Affiliation(s)
- Z Zhao
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
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Zhao Z, Lee CC, Monckton DG, Yazdani A, Coolbaugh MI, Li X, Bailey J, Shen Y, Caskey CT. Characterization and genomic mapping of genes and pseudogenes of a new human protein tyrosine phosphatase. Genomics 1996; 35:172-81. [PMID: 8661118 DOI: 10.1006/geno.1996.0336] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Previously described protein tyrosine phosphatases (PTPs) are classified into three types according to their sequence homology and structural features. Here we describe the characterization of genes and pseudogenes of a member of a fourth type of PTP, designated protein tyrosine phosphatase 4A (PTP4A). The 167-amino-acid human PTP4A bears the signature active site of all PTPs, but does not show any other sequence homology to any of the previously described PTPs. Two cDNAs encoding PTP4A that differed in their noncoding regions were isolated. Another cDNA that has a high level of sequence identity with these two cDNAs and a deletion in the coding region was also isolated. Northern analysis using a probe from a common 3'-untranslated region of the cDNAs recognized mRNAs of about 2 and 4 kb. Both species of mRNA were seen in all human adult and fetal tissues tested. Fluorescence in situ hybridization mapping of the corresponding yeast artificial chromosome clones and sequence-tagged site analysis suggested that one of the PTP4A coding genes is located at 1p35 and the other is on chromosome 11. A processed pseudogene for PTP4A was found in the BRCA1 region of 17q21 and shares 96% sequence identity to one of the PTP4A coding cDNAs. Our studies also suggest the existence of another processed pseudogene on chromosome 11.
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Affiliation(s)
- Z Zhao
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas, 77030, USA
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Abstract
The electrical resistance of wires consisting of either a single xenon atom or two xenon atoms in series was measured and calculated on the basis of an atom-jellium model. Both the measurement and the calculation yielded a resistance of 10(5) ohms for the single-xenon atom system and 10(7) ohms for the two-xenon atom system. These resistances greatly exceeded the 12,900-ohm resistance of an ideal one-dimensional conduction channel because conduction through the xenon atoms occurs through the tail of the xenon 6s resonance, which lies far above the Fermi level. This conduction process in an atom-sized system can now be understood in terms of the electronic states of individual atoms.
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Affiliation(s)
- A Yazdani
- A. Yazdani and D. M. Eigler, IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, CA 95120, USA. N. D. Lang, IBM Research Division, Thomas J. Watson Research Center, Yorktown Heights, NY 10598, USA
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Ephron D, Yazdani A, Kapitulnik A, Beasley MR. Observation of quantum dissipation in the vortex state of a highly disordered superconducting thin film. Phys Rev Lett 1996; 76:1529-1532. [PMID: 10061746 DOI: 10.1103/physrevlett.76.1529] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Lee CC, Yazdani A, Wehnert M, Zhao ZY, Lindsay EA, Bailey J, Coolbaugh MI, Couch L, Xiong M, Chinault AC. Isolation of chromosome-specific genes by reciprocal probing of arrayed cDNA and cosmid libraries. Hum Mol Genet 1995; 4:1373-80. [PMID: 7581376 DOI: 10.1093/hmg/4.8.1373] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [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: 01/26/2023] Open
Abstract
We have identified and mapped 61 novel and previously described chromosome 17 and X genes, using a human placental cDNA library. These genes were isolated using a gene identification and mapping strategy based on reciprocal probing of arrayed chromosome specific cosmid and cDNA libraries. This strategy scans gridded cosmids for nuclear genes and isolates the expressed sequence by a cosmid to cDNA filter hybridization. Inherent to this approach is the advantage of identifying the corresponding genomic cosmid clone of a particular cDNA. The genomic and cDNA reagents can be used for fluorescence in situ hybridization (FISH) and polymerase chain reaction (PCR) based mapping to resolve map positions of cDNAs belonging to gene families and those associated with multiple chromosomes. The downstream utility of reagents generated by the reciprocal probing methods is demonstrated in our studies.
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Affiliation(s)
- C C Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030 USA
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Yazdani A, Howald CM, White WR, Beasley MR, Kapitulnik A. Competition between pinning and melting in the two-dimensional vortex lattice. Phys Rev B Condens Matter 1994; 50:16117-16120. [PMID: 9975993 DOI: 10.1103/physrevb.50.16117] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Yazdani A, White WR, Hahn MR, Gabay M, Beasley MR, Kapitulnik A. Observation of Kosterlitz-Thouless-type melting of the disordered vortex lattice in thin films of a-MoGe. Phys Rev Lett 1993; 70:505-508. [PMID: 10054129 DOI: 10.1103/physrevlett.70.505] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Abstract
Human erythrocyte G6PD activity was measured in more than 500 subjects in Isfahan, Iran, and the percent of enzyme deficiency for males and females are reported. Some properties of the abnormal enzyme is compared with its normal counterpart. Apparent Km values of glucose 6-phosphate for the variant and normal enzymes were 37 and 101 microM, respectively. The variant enzyme was less resistant to inhibition by 40 microM NADPH (72% inhibition) than the normal enzyme (48% inhibition). The mode of inhibition for both enzymes was competitive with NADP+. ATP at 1.5 mM concentration also inhibited normal and variant enzymes at 17% and 10%, respectively. The inhibition was competitive with glucose 6-phosphate. Polyacrylamide gel electrophores showed that normal enzyme has one major and another weak active bands, while the variant enzyme under identical conditions shows only one active band corresponding to the major band of the normal enzyme. Thermostability of variant G6PD was slightly lower that normal but no significant differences observed in their energy of activation. The activity pH profile of the variant enzyme was truncate.
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