Browsing by Subject "virus load"

Now showing items 1-16 of 16

    • Article  

      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 ...
    • Article  

      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 ...
    • Article  

      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 ...
    • Article  

      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 ...
    • Article  

      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 ...
    • Article  

      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 ...
    • Article  

      HIV-1 integrase: From biology to chemotherapeutics 

      Zeinalipour-Loizidou, E.; Nicolaou, Charalambos P.; Nicolaïdes, Andrew N.; Kostrikis, Leontios G. (2007)
      AIDS has claimed the lives of 25 million people worldwide, an additional 40 million people are HIV-infected and new cases are being diagnosed every year. Despite the fact that HAART has moved AIDS from the category of ...
    • Article  

      HIV-1 integrase: From biology to chemotherapeuticsAAA 

      Zeinalipour-Loizidou, E.; Nicolaou, Charalambos P.; Nicolaïdes, Andrew N.; Kostrikis, Leontios G. (2007)
      AIDS has claimed the lives of 25 million people worldwide, an additional 40 million people are HIV-infected and new cases are being diagnosed every year. Despite the fact that HAART has moved AIDS from the category of ...
    • Article  

      Persistence of episomal HIV-1 infection intermediates in patients on highly active anti-retroviral therapy 

      Sharkey, M. E.; Teo, I.; Greenough, T.; Sharova, N.; Luzuriaga, K.; Sullivan, J. L.; Bucy, R. P.; Kostrikis, Leontios G.; Haase, A.; Veryard, C.; Davaro, R. E.; Cheeseman, S. H.; Daly, J. S.; Bova, C.; Ellison III, R. T.; Mady, B.; Lai, K. K.; Moyle, G.; Nelson, M.; Gazzard, B.; Shaunak, S.; Stevenson, M. (2000)
      Treatment of HIV-1-infected individuals with a combination of anti- retroviral agents results in sustained suppression of HIV-1 replication, as evidenced by a reduction in plasma viral RNA to levels below the limit of ...
    • Article  

      Persistent HIV-1 infection of natural killer cells in patients receiving highly active antiretroviral therapy 

      Valentin, A.; Rosati, M.; Patenaude, D. J.; Hatzakis, Angelos E.; Kostrikis, Leontios G.; Lazanas, Marios C.; Wyvill, K. M.; Yarchoan, R.; Pavlakis, G. N. (2002)
      We have identified a subset of CD56+CD3- human natural killer (NK) cells that express CD4 and the HIV coreceptors CCR5 and CXCR4. These cells can be productively infected in vitro by both CCR5- and CXCR4-using molecular ...
    • Article  

      Primary resistance to integrase strand-transfer inhibitors in Europe 

      Moutschen, M.; Casadellà, M.; van Ham, P. M.; Noguera-Julian, M.; van Kessel, A.; Pou, C.; Hofstra, Laura Marije Arije; Santos, J. R.; Garcia, F.; Struck, D.; Alexiev, Ivailo; Bakken Kran, A. M.; Hoepelman, A. I.; Kostrikis, Leontios G.; Somogyi, Sybille; Liitsola, K.; Linka, M.; Nielsen, C.; Otelea, D.; Paraskevis, Dimitrios N.; Poljak, M.; Puchhammer-Stöckl, E.; Staneková, D.; Stanojevic, M.; Van Laethem, K.; Zidovec Lepej, S.; Clotet, B.; Boucher, C. A. B.; Paredes, R.; Wensing, A. M. J.; Puchhammer-Stöckl, E.; Sarcletti, M.; Schmied, B.; Geit, M.; Balluch, G.; Vandamme, A. M.; Vercauteren, J.; Derdelinckx, I.; Sasse, A.; Bogaert, M.; Ceunen, H.; De Roo, A.; De Wit, S.; Echahidi, F.; Fransen, K.; Goffard, J. C.; Goubau, P.; Goudeseune, E.; Yombi, J. C.; Lacor, P.; Liesnard, C.; Pierard, D.; Rens, R.; Schrooten, Y.; Vaira, D.; Vandekerckhove, L. P.; Van den Heuvel, A.; Van Der Gucht, B.; Van Ranst, M.; Van Wijngaerden, E.; Vandercam, B.; Vekemans, M.; Verhofstede, C.; Clumeck, N.; Van Laethem, K.; Beshkov, Danail; Alexiev, Ivailo; Zidovec Lepej, S.; Begovac, J.; Demetriades, Ioannis; Kousiappa, Ioanna; Demetriou, Victoria L.; Hezka, Johana; Linka, M.; Machala, L.; Maly, M.; Nielsen, C.; Jørgensen, L. B.; Gerstoft, J.; Mathiesen, L.; Pedersen, C.; Nielsen, H.; Laursen, A.; Kvinesdal, B.; Liitsola, K.; Ristola, M.; Suni, J.; Sutinen, J.; Hamouda, O.; Kücherer, C.; Berg, T.; Braun, P.; Poggensee, G.; Däumer, M.; Eberle, J.; Heiken, H.; Kaiser, R.; Knechten, H.; Korn, K.; Müller, H.; Neifer, S.; Schmidt, B.; Walter, H.; Gunsenheimer-Bartmeyer, B.; Harrer, T.; Paraskevis, Dimitrios N.; Hatzakis, Angelos E.; Magiorkinis, Emmanouil N.; Hatzitheodorou, Eleni; Haida, Catherine; Zavitsanou, Assimina; Magiorkinis, Gkikas; Lazanas, Marios C.; Chini, Maria C.; Magafas, N.; Tsogas, Nickolaos; Paparizos, Vassilios A.; Kourkounti, Sofia; Antoniadou, Anastasia C.; Papadopoulos, Antonios I.; Panagopoulos, Periklis; Poulakou, Garyphallia G.; Sakka, V.; Chryssos, Georgios; Drimis, Stylianos; Gargalianos, Panagiotis; Lelekis, Moyssis I.; Chilomenos, G.; Psichogiou, Mina A.; Daikos, George L.; Sabatakou, H.; Panos, George; Haratsis, G.; Kordossis, Theodore; Kontos, Athanasios N.; Koratzanis, Georgios; Theodoridou, Maria C.; Mostrou, Glykeria J.; Spoulou, Vana I.; Schmit, J. C.; Struck, D.; Hemmer, R.; Arendt, V.; Staub, T.; Schneider, F.; Roman, F.; Wensing, A. M.; Boucher, C. A.; van de Vijver, D. A.; van Kessel, A.; van, P. H.; Brinkman, K.; Op de, E. L.; van der Ende, M. E.; Hoepelman, I. M.; van Kasteren, M.; Juttmann, J.; Kuipers, M.; Langebeek, N.; Richter, C.; Santegoets, R. M.; Schrijnders-Gudde, L.; Schuurman, R.; van de Ven, B. J.; Åsjö, Birgitta; Bakken, A. M.; Ormaasen, V.; Aavitsland, P.; Otelea, D.; Paraschiv, S.; Tudor, A. M.; Jevtovic, D.; Salemovic, D.; Stanekova, D.; Habekova, M.; Mokráš, Miloš; Truska, P.; Poljak, M.; Lunar, M.; Babic, Dunja Z.; Tomazic, J.; Vidmar, L.; Vovko, T.; Karner, P.; Clotet, B.; Garcia, F.; Domingo, P.; Galindo, M. J.; Miralles, C.; Del, M. A.; Ribera, E.; Iribarren, J. A.; Ruiz, L.; de la Torre, J.; Vidal, F.; Garcia, F.; Paredes, R. (2015)
      Objectives: The objective of this study was to define the natural genotypic variation of the HIV-1 integrase gene across Europe for epidemiological surveillance of integrase strand-transfer inhibitor (InSTI) resistance. ...
    • Article  

      Quantitation of human immunodeficiency virus type 1 DNA forms with the second template switch in peripheral blood cells predicts disease progression independently of plasma RNA load 

      Kostrikis, Leontios G.; Touloumi, G.; Karanicolas, R.; Pantazis, N.; Anastassopoulou, C. G.; Karafoulidou, A.; Goedert, J. J.; Hatzakis, Angelos E. (2002)
      There are several forms of human immunodeficiency virus type 1 (HIV-1) DNA in peripheral blood T cells and lymph nodes in untreated HIV-1-infected individuals and in patients whose plasma HIV-1 RNA levels are suppressed ...
    • Article  

      T cell receptor excision circles and HIV-1 2-LTR episomal DNA to predict AIDS in patients not receiving effective therapy 

      Goedert, J. J.; O'Brien, T. R.; Hatzakis, Angelos E.; Kostrikis, Leontios G. (2001)
      Objective: To determine whether improved prediction of AIDS-free survival following HIV-1 seroconversion is achieved by measuring HIV-1 2-LTR episomal DNA (2-LTR) circles and T cell receptor rearrangement excision circles ...
    • Article  

      Trends and predictors of transmitted drug resistance (TDR) and clusters with TDR in a local Belgian HIV-1 epidemic 

      Pineda-Peña, A. -C; Schrooten, Y.; Vinken, L.; Ferreira, F.; Li, G.; Trovão, N. S.; Khouri, R.; Derdelinckx, I.; De Munter, P.; Kuc̈herer, C.; Kostrikis, Leontios G.; Nielsen, C.; Littsola, K.; Wensing, A.; Stanojevic, M.; Paredes, R.; Balotta, Claudia; Albert, Jan; Boucher, C.; Gomez-Lopez, A.; Van Wijngaerden, E.; Van Ranst, M.; Vercauteren, J.; Vandamme, A. M.; Van Laethem, K. (2014)
      We aimed to study epidemic trends and predictors for transmitted drug resistance (TDR) in our region, its clinical impact and its association with transmission clusters. We included 778 patients from the AIDS Reference ...
    • Article  

      Use of real-time PCR and molecular beacons to detect virus replication in human immunodeficiency virus type 1-infected individuals on prolonged effective antiretroviral therapy 

      Lewin, S. R.; Vesanen, M.; Kostrikis, Leontios G.; Hurley, A.; Duran, M.; Zhang, L.; Ho, David D.; Markowitz, M.; Gibson, U. E.; Heid, C. A. (1999)
      We have designed a novel, precise, and sensitive assay to measure unspliced (US) human immunodeficiency virus type 1 (HIV-1) mRNA in peripheral blood mononuclear cells of HIV-1-infected individuals by using real-time PCR ...