Browsing by Author "Kostrikis, Leontios G."
Now showing items 1-20 of 82
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Analysis of binding parameters of HIV-1 integrase inhibitors: Correlates of drug inhibition and resistance
Loizidou, Eriketi Z.; Zeinalipour-Yazdi, Constantinos D.; Christofides, Tasos C.; Kostrikis, Leontios G. (2009)This study undertook an exploratory data analysis of the binding parameters of HIV-1 integrase inhibitors. The study group involved inhibitors in preclinical development from the diketo acid, pyrroloquinoline and naphthyridine ...
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Analysis of binding parameters of HIV-1 integrase inhibitors: Correlates of drug inhibition and resistance
Loizidou, Eriketi Z.; Zeinalipour-Yazdi, Constantinos D.; Christofides, Tasos C.; Kostrikis, Leontios G. (2009)This study undertook an exploratory data analysis of the binding parameters of HIV-1 integrase inhibitors. The study group involved inhibitors in preclinical development from the diketo acid, pyrroloquinoline and naphthyridine ...
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Architectural insight into inovirus-associated vectors (IAVs) and development of IAV-based vaccines inducing humoral and cellular responses: Implications in HIV-1 vaccines
Hassapis, K. A.; Stylianou, Dora C.; Kostrikis, Leontios G. (2014)Inovirus-associated vectors (IAVs) are engineered, non-lytic, filamentous bacteriophages that are assembled primarily from thousands of copies of the major coat protein gp8 and just five copies of each of the four minor ...
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C2, An Unusual Filamentous Bacterial Virus: Protein Sequence and Conformation, DNA Size and Conformation, and Nucleotide/Subunit Ratio
Kostrikis, Leontios G.; Reisberg, S. A.; Day, L. A.; Kim, H. -Y; Shin, S. (1995)Inovirus C2 is 1295 nm long and 6.8 nm in diameter, and its mass is 24 million Da. Its genome is a topologically circular, single-stranded DNA molecule of 8100 nucleotides. The DNA is packed in the virion as two antiparallel ...
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CCR5 promoter polymorphisms in a Kenyan perinatal human immunodeficiency virus type 1 cohort: Association with increased 2-year maternal mortality
John, G. C.; Bird, T.; Overbaugh, J.; Nduati, R.; Mbori-Ngacha, D.; Rostron, T.; Dong, T.; Kostrikis, Leontios G.; Richardson, B.; Rowland-Jones, S. L. (2001)The CCR5 chemokine receptor acts as a coreceptor with CD4 to permit infection by primary macrophage-tropic human immunodeficiency virus type 1 (HIV-1) strains. The CCR5Δ32 mutation, which is associated with resistance to ...
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Cellular HIV type 1 DNA levels are equivalent among drug-sensitive and drug-resistant strains in newly diagnosed and antiretroviral naive patients
Antoniadou, Zoi Anna; Hezka, Johana; Kousiappa, Ioanna; Mamais, Ioannis A.; Skoura, Lemonia G.; Pilalas, Dimitrios; Metallidis, Simeon A.; Nicolaidis, Pavlos; Malisiovas, Nikolaos; Kostrikis, Leontios G. (2014)The emergence of resistance against current antiretroviral drugs to human immunodeficiency virus type 1 (HIV-1) is an increasingly important concern to the continuous success of antiretroviral therapy to HIV-1-infected ...
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Cellular HIV-1 DNA levels in drug sensitive strains are equivalent to those in drug resistant strains in newly-diagnosed patients in Europe
Demetriou, Victoria L.; van de Vijver, D. A. M. C.; Kousiappa, Ioanna; Balotta, Claudia; Clotet, B.; Grossman, Z.; Jørgensen, L. B.; Lepej, S. Z.; Levy, I.; Nielsen, C.; Paraskevis, Dimitrios N.; Poljak, M.; Roman, F.; Ruiz, L.; Schmidt, J. -C; Vandamme, A. -M; van Laethem, K. V.; Vercauteren, J.; Kostrikis, Leontios G. (2010)Background HIV-1 genotypic drug resistance is an important threat to the success of antiretroviral therapy and transmitted resistance has reached 9% prevalence in Europe. Studies have demonstrated that HIV-1 DNA load in ...
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Cellular HIV-1 DNA load predicts HIV-RNA rebound and the outcome of highly active antiretroviral therapy
Hatzakis, Angelos E.; Touloumi, G.; Pantazis, N.; Anastassopoulou, C. G.; Katsarou, O.; Karafoulidou, A.; Goedert, J. J.; Kostrikis, Leontios G. (2004)Objective: To assess whether cellular HIV-1 DNA prior to highly active antiretroviral therapy (HAART) initiation predicts its outcome. Design and methods: Patients included all 51 hemophiliacs of the Greek component of the ...
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Changes in T Cell Receptor Excision DNA Circle (TREC) Levels in HIV Type 1-Infected Subjects Pre- and Post-Highly Active Antiretroviral Therapy
Touloumi, G.; Pantazis, N.; Karafoulidou, A.; Mandalaki, T.; Goedert, J. J.; Kostrikis, Leontios G.; Hatzakis, Angelos E. (2004)The T cell receptor excision DNA circle (TREC) level is an independent predictor of HIV-1 disease prognosis. We studied the temporal changes in TREC levels prior to and after highly active antiretroviral therapy (HAART) ...
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A chemokine receptor CCR2 allele delays HIV-1 disease progression and is associated with a CCR5 promoter mutation
Deutsch, L.; Kostrikis, Leontios G.; Huang, Y.; Moore, J. P.; Wolinsky, S. M.; Zhang, L.; Guo, Y.; Phair, J.; Neumann, A. U.; Ho, David D. (1998)Viral and host factors influence the rate of HIV-1 disease progression. For HIV-1 to fuse, a CD4+ cell must express a co-receptor that the virus can use. The chemokine receptors CCR5 and CXCR4 are used by R5 and X4 viruses, ...
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Contrasting frequencies of CCR5Δ32 and CCR2-64I alleles in the Tunisian population [1]
Barbouche, R. M.; Hong, L.; Dellagi, K.; Kostrikis, Leontios G. (2001)
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CXCR4 mediates entry and productive infection of syncytia-inducing (x4) hiv-1 strains in primary macrophages
Valentin, A.; Trivedi, H.; Lu, W.; Kostrikis, Leontios G.; Pavlakis, G. N. (2000)CCR5 and CXCR4 are the main coreceptors for non-syncytia-inducing (NSI) and syncytia-inducing (SI) HIV-1 strains, respectively. NSI HIV-1 isolates do not infect either human lymphoid or monocytoid cell lines, and this ...
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Determining neutralization serotypes of HIV type 1 by neural networks
Kostrikis, Leontios G.; Michalopoulou, Z. -H; Cao, Yun Zhen; Moore, J. P.; Ho, David D. (1996)
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Development of a molecular-beacon-based multi-allelic real-time RT-PCR assay for the detection of human coronavirus causing severe acute respiratory syndrome (SARS-CoV): A general methodology for detecting rapidly mutating viruses
Hadjinicolaou, Andreas V.; Farcas, Gabriella A.; Demetriou, Victoria L.; Mazzulli, T.; Poutanen, Susan M.; Willey, B. M.; Low, D. E.; Butany, Jagdish W.; Asa, S. L.; Kain, K. C.; Kostrikis, Leontios G. (2011)Emerging infectious diseases have caused a global effort for development of fast and accurate detection techniques. The rapidly mutating nature of viruses presents a major difficulty, highlighting the need for specific ...
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Dramatic rise in plasma viremia after CD8+ T cell depletion in simian immunodeficiency virus-infected macaques
Jin, X.; Bauer, D. E.; Tuttleton, S. E.; Lewin, S.; Gettie, A.; Blanchard, J.; Irwin, C. E.; Safrit, J. T.; Mittler, J.; Weinberger, L.; Kostrikis, Leontios G.; Zhang, L.; Perelson, A. S.; Ho, David D. (1999)To determine the role of CD8+ T cells in controlling simian immunodeficiency virus (SIV) replication in vivo, we examined the effect of depleting this cell population using an anti-CD8 monoclonal antibody, OKT8F. There was ...
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Effect of recent thymic emigrants on progression of HIV-1 disease
Hatzakis, Angelos E.; Touloumi, G.; Karanicolas, R.; Karafoulidou, A.; Mandalaki, T.; Anastassopoulou, C. G.; Zhang, L.; Goedert, J. J.; Ho, David D.; Kostrikis, Leontios G. (2000)Background. The concentration of T-cell receptor-rearrangement excision DNA circles (TREC) in peripheral-blood T cells is a marker of recent thymic emigrant αβ T cells. We studied the predictive ability of measurements of ...
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Effects of CCR5-Δ32, CCR2-64I, and SDF-1 3′ a alleles on HIV-1 disease progression: An international meta-analysis of individual-patient data
Ioannidis, J. P. A.; Rosenberg, P. S.; Goedert, J. J.; Ashton, L. J.; Benfield, T. L.; Buchbinder, S. P.; Coutinho, R. A.; Eugen-Olsen, J.; Gallart, T.; Katzenstein, T. L.; Kostrikis, Leontios G.; Kuipers, H.; Louie, L. G.; Mallal, S. A.; Margolick, J. B.; Martinez, O. P.; Meyer, L.; Michael, N. L.; Operskalski, E.; Pantaleo, G.; Rizzardi, G. P.; Schuitemaker, H.; Sheppard, H. W.; Stewart, G. J.; Theodorou, I. D.; Ullum, H.; Vicenzi, E.; Vlahov, D.; Wilkinson, D.; Workman, C.; Zagury, J. -F; O'Brien, T. R. (2001)Background: Studies relating certain chemokine and chemokine receptor gene alleles with the outcome of HIV-1 infection have yielded inconsistent results. Objective: To examine postulated associations of genetic alleles ...
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Effects of in Vivo CD8+ T cell depletion on virus replication in rhesus macaques immunized with a live, attenuated simian immunodeficiency virus vaccine
Metzner, K. J.; Jin, X.; Lee, F. V.; Gettie, A.; Bauer, D. E.; Di Mascio, M.; Perelson, A. S.; Marx, P. A.; Ho, David D.; Kostrikis, Leontios G.; Connor, R. I. (2000)The role of CD8+ T lymphocytes in controlling replication of live, attenuated simian immunodeficiency virus (SIV) was investigated as part of a vaccine study to examine the correlates of protection in the SIV/rhesus macaque ...
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Emergence of drug-resistant HIV-1 variants in patients undergoing structured treatment interruptions
Schweighardt, B.; Ortiz, G. M.; Grant, R. M.; Wellons, M.; Miralles, G. D.; Kostrikis, Leontios G.; Bartlett, J. A.; Nixon, D. F. (2002)We report the emergence of drug-resistant viral mutations in chronically HIV-infected individuals undergoing structured treatment interruptions (STI). The protease mutation M46L and the reverse transcriptase mutations K101E ...
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Emergence of Minor Populations of Human Immunodeficiency Virus Type 1 Carrying the M184V and L90M Mutations in Subjects Undergoing Structured Treatment Interruptions
Metzner, K. J.; Bonhoeffer, S.; Fischer, M.; Karanicolas, R.; Allers, K.; Joos, B.; Weber, R.; Hirschel, B.; Kostrikis, Leontios G.; Günthard, H. F. (2003)The use of structured treatment interruption (STI) in human immunodeficiency virus (HIV)-infected subjects is currently being studied as an alternative therapeutic strategy for HIV-1. The potential risk for selection of ...