BACKGROUND: Prospective follow-up studies have recently suggested that persistent high-risk human papillomavirus (HPV) infections play a key role in the progression of CIN lesions and in the development of cervical cancer. However, data on type-specific persistence, viral integration, and the role of multiple infections are scanty. MATERIALS AND METHODS: A cross-sectional/cohort study was conducted between 1998 and 2002 in three New Independent States of the former Soviet Union comprising a cohort of 3,187 women, of whom 854 women were followed up for a mean of 17 months (SD, 11.6). HPV genotyping was done with real-time PCR, detecting HPV types 16, 18/45, 31, 33/52/58, 35, and 39. The integration status of HPV16 was examined by using a novel Taqman-based PCR method. RESULTS: The mean clearance time for the individual high- risk-type infection was 16.5 months (range = 0.9-34.9 months). HPV16 and HPV31 were the most persistent infections (clearance times = 18.1 and 16.2 months, respectively), whereas HPV39 infections cleared most rapidly. The mean copies per cell in HPV18/45, HPV31, HPV33/52/58, and HPV39 infections were higher in persisting HPV infections than in HPV infections that cleared, but the difference was not significant. Integration of HPV16 was not found to correlate with HPV persistence. CONCLUSIONS: A large proportion of women remained high-risk HPV positive after 18 months. Coinfection with multiple HPV types, viral load, or integration status did not correlate with persistence of high-risk HPV infections.
BACKGROUND: Prospective follow-up studies have recently suggested that persistent high-risk human papillomavirus (HPV) infections play a key role in the progression of CIN lesions and in the development of cervical cancer. However, data on type-specific persistence, viral integration, and the role of multiple infections are scanty. MATERIALS AND METHODS: A cross-sectional/cohort study was conducted between 1998 and 2002 in three New Independent States of the former Soviet Union comprising a cohort of 3,187 women, of whom 854 women were followed up for a mean of 17 months (SD, 11.6). HPV genotyping was done with real-time PCR, detecting HPV types 16, 18/45, 31, 33/52/58, 35, and 39. The integration status of HPV16 was examined by using a novel Taqman-based PCR method. RESULTS: The mean clearance time for the individual high- risk-type infection was 16.5 months (range = 0.9-34.9 months). HPV16 and HPV31 were the most persistent infections (clearance times = 18.1 and 16.2 months, respectively), whereas HPV39 infections cleared most rapidly. The mean copies per cell in HPV18/45, HPV31, HPV33/52/58, and HPV39 infections were higher in persisting HPV infections than in HPV infections that cleared, but the difference was not significant. Integration of HPV16 was not found to correlate with HPV persistence. CONCLUSIONS: A large proportion of women remained high-risk HPV positive after 18 months. Coinfection with multiple HPV types, viral load, or integration status did not correlate with persistence of high-risk HPV infections.
Authors: Diane M Da Silva; Carly A Movius; Adam B Raff; Heike E Brand; Joseph G Skeate; Michael K Wong; W Martin Kast Journal: Virology Date: 2014-02-17 Impact factor: 3.616
Authors: Wendy Theelen; Ernst-Jan M Speel; Michael Herfs; Martin Reijans; Guus Simons; Els V Meulemans; Marcella M Baldewijns; Frans C S Ramaekers; Joan Somja; Philippe Delvenne; Anton H N Hopman Journal: Am J Pathol Date: 2010-09-02 Impact factor: 4.307
Authors: Long Fu Xi; James P Hughes; Philip E Castle; Zoe R Edelstein; Chunhui Wang; Denise A Galloway; Laura A Koutsky; Nancy B Kiviat; Mark Schiffman Journal: J Infect Dis Date: 2011-03-16 Impact factor: 5.226
Authors: Long Fu Xi; James P Hughes; Zoe R Edelstein; Nancy B Kiviat; Laura A Koutsky; Constance Mao; Jesse Ho; Mark Schiffman Journal: J Infect Dis Date: 2009-12-01 Impact factor: 5.226
Authors: Kari Syrjänen; Irena Shabalova; Nicolay Petrovichev; Vladimir Kozachenko; Tatjana Zakharova; Julia Pajanidi; Jurij Podistov; Galina Chemeris; Larisa Sozaeva; Elena Lipova; Irena Tsidaeva; Olga Ivanchenko; Alla Pshepurko; Sergej Zakharenko; Raisa Nerovjna; Ludmila Kljukina; Oksana Erokhina; Marina Branovskaja; Maritta Nikitina; Valerija Grunberga; Alexandr Grunberg; Anna Juschenko; Rosa Santopietro; Marcella Cintorino; Piero Tosi; Stina Syrjänen Journal: Eur J Epidemiol Date: 2007-09-08 Impact factor: 12.434