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de Oliveira V, Santos D, Sinisgalli R, Vancini R, Costa G, Nikolaidis PT, Knechtle B, Weiss K, Andrade M, de Lira C. Factors associated with perceived performance drops and musculoskeletal injuries in Brazilian recreational triathletes. Eur Rev Med Pharmacol Sci 2022; 26:5651-5659. [PMID: 36066136 DOI: 10.26355/eurrev_202208_29498] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE The aim of the study was to investigate sleep characteristics, use of supplements, and training volume of recreational triathletes, and to verify possible associations with perceived performance drops and occurrence of injuries. MATERIALS AND METHODS Recreational triathletes (n=942) answered a questionnaire inquiring about their demographic characteristics, performance, injuries and training volume. RESULTS When comparing athletes who slept more (9-10 hours) with those who slept less, less sleep was associated with a higher prevalence of perceived performance drops. Regarding difficulties in initiating sleep, the absence of initiating difficulties (p<0.001) was a protective factor against perceived performance drops. Regarding weekly training volume, compared to those who trained more than 20 hours, training less than 3 hours (p<0.001), 3-5 hours (p<0.001), or 12-14 hours (p<0.001) were protective factors against perceived performance drops. Concerning training volume and injuries, we found that compared to those who trained more than 20 hours, training 18-20 hours (p<0.001), 15-17 hours (p<0.001), 12-14 hours (p<0.001), 6-8 hours (p<0.001), or 3-5 hours (p<0.001) were protective factors against injuries. CONCLUSIONS Triathletes with a lower sleep quantity and those who have difficulties initiating sleep frequently experience drops in performance. Training volumes can influence both performance and the likelihood of injuries.
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Affiliation(s)
- V de Oliveira
- Human and Exercise Physiology Division, Faculty of Physical Education and Dance, Federal University of Goiás, Goiânia, Brazil.
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2
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Lane BM, Chryst-Stangl M, Wu G, Shalaby M, El Desoky S, Middleton CC, Huggins K, Sood A, Ochoa A, Malone AF, Vancini R, Miller SE, Hall G, Kim SY, Howell DN, Kari JA, Gbadegesin R. Steroid-sensitive nephrotic syndrome candidate gene CLVS1 regulates podocyte oxidative stress and endocytosis. JCI Insight 2022; 7:e152102. [PMID: 34874915 PMCID: PMC9018043 DOI: 10.1172/jci.insight.152102] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 12/01/2021] [Indexed: 11/17/2022] Open
Abstract
We performed next-generation sequencing in patients with familial steroid-sensitive nephrotic syndrome (SSNS) and identified a homozygous segregating variant (p.H310Y) in the gene encoding clavesin-1 (CLVS1) in a consanguineous family with 3 affected individuals. Knockdown of the clavesin gene in zebrafish (clvs2) produced edema phenotypes due to disruption of podocyte structure and loss of glomerular filtration barrier integrity that could be rescued by WT CLVS1 but not the p.H310Y variant. Analysis of cultured human podocytes with CRISPR/Cas9-mediated CLVS1 knockout or homozygous H310Y knockin revealed deficits in clathrin-mediated endocytosis and increased susceptibility to apoptosis that could be rescued with corticosteroid treatment, mimicking the steroid responsiveness observed in patients with SSNS. The p.H310Y variant also disrupted binding of clavesin-1 to α-tocopherol transfer protein, resulting in increased reactive oxygen species (ROS) accumulation in CLVS1-deficient podocytes. Treatment of CLVS1-knockout or homozygous H310Y-knockin podocytes with pharmacological ROS inhibitors restored viability to control levels. Taken together, these data identify CLVS1 as a candidate gene for SSNS, provide insight into therapeutic effects of corticosteroids on podocyte cellular dynamics, and add to the growing evidence of the importance of endocytosis and oxidative stress regulation to podocyte function.
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Affiliation(s)
- Brandon M. Lane
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Megan Chryst-Stangl
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Guanghong Wu
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Mohamed Shalaby
- Pediatric Department, Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Sherif El Desoky
- Pediatric Department, Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Claire C. Middleton
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Kinsie Huggins
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
| | - Amika Sood
- Department of Biostatistics and Bioinformatics and Duke Center for Statistical Genetics and Genomics, Duke University, Durham, North Carolina, USA
| | - Alejandro Ochoa
- Department of Biostatistics and Bioinformatics and Duke Center for Statistical Genetics and Genomics, Duke University, Durham, North Carolina, USA
| | - Andrew F. Malone
- Department of Medicine, Division of Nephrology, Washington University School of Medicine in St. Louis, St. Louis, Missouri, USA
| | | | | | - Gentzon Hall
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Medicine, Division of Nephrology; and
| | - So Young Kim
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, North Carolina, USA
| | | | - Jameela A. Kari
- Pediatric Department, Pediatric Nephrology Center of Excellence, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Rasheed Gbadegesin
- Department of Pediatrics, Division of Nephrology, and Duke Molecular Physiology Institute, Duke University School of Medicine, Durham, North Carolina, USA
- Department of Medicine, Division of Nephrology; and
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3
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Wilkison SJ, Bright CL, Vancini R, Song DJ, Bomze HM, Cartoni R. Local Accumulation of Axonal Mitochondria in the Optic Nerve Glial Lamina Precedes Myelination. Front Neuroanat 2021; 15:678501. [PMID: 34093141 PMCID: PMC8173055 DOI: 10.3389/fnana.2021.678501] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Accepted: 04/26/2021] [Indexed: 11/18/2022] Open
Abstract
Mitochondria are essential for neurons and must be optimally distributed along their axon to fulfill local functions. A high density of mitochondria has been observed in retinal ganglion cell (RGC) axons of an unmyelinated region of the optic nerve, called the glial lamina (GL) in mouse (lamina cribrosa in human). In glaucoma, the world's leading cause of irreversible blindness, the GL is the epicenter of RGC degeneration and is connected to mitochondrial dysfunction. It is generally accepted that the local accumulation of mitochondria in the GL is established due to the higher energy requirement of unmyelinated axons. Here we revisit the connection between mitochondrial positioning and myelin in RGC axons. We show that the high density of mitochondria in the GL is restricted to larger axons and is established before myelination. Thus, contrary to a longstanding belief in the field, the myelination pattern is not responsible for the establishment of the local accumulation of mitochondria in GL axons. Our findings open new research avenues likely critical to understanding the pathophysiology of glaucoma.
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Affiliation(s)
- Samantha J Wilkison
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, United States.,Department of Ophthalmology, Duke University School of Medicine, Durham, NC, United States
| | - Cora L Bright
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, United States.,Department of Ophthalmology, Duke University School of Medicine, Durham, NC, United States
| | - Ricardo Vancini
- Department of Pathology, Duke University School of Medicine, Durham, NC, United States
| | - Daniel J Song
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, United States.,Department of Ophthalmology, Duke University School of Medicine, Durham, NC, United States
| | - Howard M Bomze
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, United States.,Department of Ophthalmology, Duke University School of Medicine, Durham, NC, United States
| | - Romain Cartoni
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, United States.,Department of Ophthalmology, Duke University School of Medicine, Durham, NC, United States
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4
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Courtland JL, Bradshaw TWA, Waitt G, Soderblom EJ, Ho T, Rajab A, Vancini R, Kim IH, Soderling SH. Genetic disruption of WASHC4 drives endo-lysosomal dysfunction and cognitive-movement impairments in mice and humans. eLife 2021; 10:e61590. [PMID: 33749590 PMCID: PMC7984842 DOI: 10.7554/elife.61590] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 02/09/2021] [Indexed: 12/12/2022] Open
Abstract
Mutation of the Wiskott-Aldrich syndrome protein and SCAR homology (WASH) complex subunit, SWIP, is implicated in human intellectual disability, but the cellular etiology of this association is unknown. We identify the neuronal WASH complex proteome, revealing a network of endosomal proteins. To uncover how dysfunction of endosomal SWIP leads to disease, we generate a mouse model of the human WASHC4c.3056C>G mutation. Quantitative spatial proteomics analysis of SWIPP1019R mouse brain reveals that this mutation destabilizes the WASH complex and uncovers significant perturbations in both endosomal and lysosomal pathways. Cellular and histological analyses confirm that SWIPP1019R results in endo-lysosomal disruption and uncover indicators of neurodegeneration. We find that SWIPP1019R not only impacts cognition, but also causes significant progressive motor deficits in mice. A retrospective analysis of SWIPP1019R patients reveals similar movement deficits in humans. Combined, these findings support the model that WASH complex destabilization, resulting from SWIPP1019R, drives cognitive and motor impairments via endo-lysosomal dysfunction in the brain.
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Affiliation(s)
- Jamie L Courtland
- Department of Neurobiology, Duke University School of MedicineDurhamUnited States
| | - Tyler WA Bradshaw
- Department of Neurobiology, Duke University School of MedicineDurhamUnited States
| | - Greg Waitt
- Proteomics and Metabolomics Shared Resource, Duke University School of MedicineDurhamUnited States
| | - Erik J Soderblom
- Proteomics and Metabolomics Shared Resource, Duke University School of MedicineDurhamUnited States
- Department of Cell Biology, Duke University School of MedicineDurhamUnited States
| | - Tricia Ho
- Proteomics and Metabolomics Shared Resource, Duke University School of MedicineDurhamUnited States
| | - Anna Rajab
- Burjeel Hospital, VPS HealthcareMuscatOman
| | - Ricardo Vancini
- Department of Pathology, Duke University School of MedicineDurhamUnited States
| | - Il Hwan Kim
- Department of Cell Biology, Duke University School of MedicineDurhamUnited States
- Department of Anatomy and Neurobiology, University of Tennessee Heath Science CenterMemphisUnited States
| | - Scott H Soderling
- Department of Neurobiology, Duke University School of MedicineDurhamUnited States
- Department of Cell Biology, Duke University School of MedicineDurhamUnited States
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5
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Schuchman RM, Vancini R, Piper A, Breuer D, Ribeiro M, Ferreira D, Magliocca J, Emmerich V, Hernandez R, Brown DT. Role of the vacuolar ATPase in the Alphavirus replication cycle. Heliyon 2018; 4:e00701. [PMID: 30094371 PMCID: PMC6074608 DOI: 10.1016/j.heliyon.2018.e00701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 06/07/2018] [Accepted: 07/18/2018] [Indexed: 02/06/2023] Open
Abstract
We have shown that Alphaviruses can enter cells by direct penetration at the plasma membrane (R. Vancini, G. Wang, D. Ferreira, R. Hernandez, and D. Brown, J Virol, 87:4352–4359, 2013). Direct penetration removes the requirement for receptor-mediated endocytosis exposure to low pH and membrane fusion in the process of RNA entry. Endosomal pH as well as the pH of the cell cytoplasm is maintained by the activity of the vacuolar ATPase (V-ATPase). Bafilomycin is a specific inhibitor of V-ATPase. To characterize the roll of the V-ATPase in viral replication we generated a Bafilomycin A1(BAF) resistant mutant of Sindbis virus (BRSV). BRSV produced mature virus and virus RNA in greater amounts than parent virus in BAF-treated cells. Sequence analysis revealed mutations in the E2 glycoprotein, T15I/Y18H, were responsible for the phenotype. These results show that a functional V-ATPase is required for efficient virus RNA synthesis and virus maturation in Alphavirus infection.
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Affiliation(s)
- Ryan M Schuchman
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Ricardo Vancini
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Amanda Piper
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Denitra Breuer
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Mariana Ribeiro
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Davis Ferreira
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA.,Institute of Microbiology, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Joseph Magliocca
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Veronica Emmerich
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Raquel Hernandez
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
| | - Dennis T Brown
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, NC, USA
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Vancini R, Wang G, Ferreira D, Hernandez R, Brown DT. Alphavirus genome delivery occurs directly at the plasma membrane in a time- and temperature-dependent process. J Virol 2013; 87:4352-9. [PMID: 23388718 PMCID: PMC3624389 DOI: 10.1128/jvi.03412-12] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 01/19/2013] [Indexed: 12/14/2022] Open
Abstract
It is widely held that arboviruses such as the alphavirus Sindbis virus gain entry into cells by a process of receptor-mediated endocytosis followed by membrane fusion in the acid environment of the endosome. We have used an approach of direct observation of Sindbis virus entry into cells by electron microscopy and immunolabeling of virus proteins with antibodies conjugated to gold beads. We found that upon attaching to the cell surface, intact RNA-containing viruses became empty shells that could be identified only by antibody labeling. We found that the rate at which full particles were converted to empty particles increased with time and temperature. We found that this entry event takes place at temperatures that inhibit both endosome formation and membrane fusion. We conclude that entry of alphaviruses is by direct penetration of cell plasma membranes through a pore structure formed by virus and, possibly, host proteins.
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Affiliation(s)
- Ricardo Vancini
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Gongbo Wang
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Davis Ferreira
- Instituto de Microbiologia and Instituto Nacional de Ciência e Tecnologia em Biologia Estrutural e Bioimagem (INCTBEB), Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
| | - Raquel Hernandez
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Dennis T. Brown
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
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Vancini R, Kramer LD, Ribeiro M, Hernandez R, Brown D. Flavivirus infection from mosquitoes in vitro reveals cell entry at the plasma membrane. Virology 2013; 435:406-14. [DOI: 10.1016/j.virol.2012.10.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2012] [Revised: 09/01/2012] [Accepted: 10/06/2012] [Indexed: 10/27/2022]
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8
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Kononchik JP, Vancini R, Brown DT. Alphavirus adsorption to mosquito cells as viewed by freeze fracture immunolabeling. Virology 2011; 415:132-40. [DOI: 10.1016/j.virol.2011.04.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2010] [Revised: 04/11/2011] [Accepted: 04/22/2011] [Indexed: 12/12/2022]
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Smith KM, Nanda K, Spears CJ, Ribeiro M, Vancini R, Piper A, Thomas GS, Thomas ME, Brown DT, Hernandez R. Structural mutants of dengue virus 2 transmembrane domains exhibit host-range phenotype. Virol J 2011; 8:289. [PMID: 21658241 PMCID: PMC3128863 DOI: 10.1186/1743-422x-8-289] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2011] [Accepted: 06/09/2011] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND There are over 700 known arboviruses and at least 80 immunologically distinct types that cause disease in humans. Arboviruses are transmitted among vertebrates by biting insects, chiefly mosquitoes and ticks. These viruses are widely distributed throughout the world, depending on the presence of appropriate hosts (birds, horses, domestic animals, humans) and vectors. Mosquito-borne arboviruses present some of the most important examples of emerging and resurgent diseases of global significance. METHODS A strategy has been developed by which host-range mutants of Dengue virus can be constructed by generating deletions in the transmembrane domain (TMD) of the E glycoprotein. The host-range mutants produced and selected favored growth in the insect hosts. Mouse trials were conducted to determine if these mutants could initiate an immune response in an in vivo system. RESULTS The DV2 E protein TMD defined as amino acids 452SWTMKILIGVIITWIG467 was found to contain specific residues which were required for the production of this host-range phenotype. Deletion mutants were found to be stable in vitro for 4 sequential passages in both host cell lines. The host-range mutants elicited neutralizing antibody above that seen for wild-type virus in mice and warrant further testing in primates as potential vaccine candidates. CONCLUSIONS Novel host-range mutants of DV2 were created that have preferential growth in insect cells and impaired infectivity in mammalian cells. This method for creating live, attenuated viral mutants that generate safe and effective immunity may be applied to many other insect-borne viral diseases for which no current effective therapies exist.
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Affiliation(s)
| | - Kavita Nanda
- Arbovax, Incorporated, Raleigh, North Carolina, USA
| | | | - Mariana Ribeiro
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Ricardo Vancini
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Amanda Piper
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Gwynneth S Thomas
- Arbovax, Incorporated, Raleigh, North Carolina, USA
- Wake Forest University, Department of Molecular Pathology, Medical Center Boulevard, Winston-Salem, North Carolina, USA
| | | | - Dennis T Brown
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
| | - Raquel Hernandez
- Department of Molecular and Structural Biochemistry, North Carolina State University, Raleigh, North Carolina, USA
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Nanda K, Vancini R, Ribeiro M, Brown DT, Hernandez R. A high capacity Alphavirus heterologous gene delivery system. Virology 2009; 390:368-73. [DOI: 10.1016/j.virol.2009.05.026] [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] [Received: 04/14/2009] [Revised: 05/11/2009] [Accepted: 05/25/2009] [Indexed: 10/20/2022]
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