1978 …2020

Research output per year

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Article
2020

Development of hepatic pathology in GBV-B-infected red-bellied tamarins (Saguinus labiatus)

Dale, J. M., Hood, S. P., Bowen, O., Bright, H., Cutler, K. L., Berry, N., Almond, N., Goldin, R., Karayiannis, P. & Rose, N. J., 1 Jan 2020, (Accepted/In press) In : Journal of Medical Virology.

Research output: Contribution to journalArticle

Open Access
1 Citation (Scopus)
2018

Quasispecies Changes with Distinctive Point Mutations in the Hepatitis C Virus Internal Ribosome Entry Site (IRES) Derived from PBMCs and Plasma

Mercuri, L., Thomson, E. C., Hughes, J. & Karayiannis, P., 1 Jan 2018, In : Advances in Virology. 2018, 4835252.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2017

Demographic changes of hepatitis B virus infection in Iran for the last two decades

Shelmani, H. M., Karayiannis, P., Ashtari, S., Mahmanzar, M. A., Khanabadi, B., Modami, N., Gholipour, F., Zare, F. & Zali, M. R., 1 Jan 2017, In : Gastroenterology and Hepatology from Bed to Bench. 10, p. S38-S43

Research output: Contribution to journalArticle

5 Citations (Scopus)

Hepatitis B virus: virology, molecular biology, life cycle and intrahepatic spread

Karayiannis, P., 2 Nov 2017, (Accepted/In press) In : Hepatology International. p. 1-9 9 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)
2016

Hepatitis B viral replication influences the expression of natural killer cell ligands

Koumbi, L., Pollicino, T., Raimondo, G., Kumar, N., Karayiannis, P. & Khakoo, S. I., 2016, In : Annals of Gastroenterology. 29, 3, p. 348-357 10 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Hepatitis B virus basal core promoter mutations show lower replication fitness associated with cccDNA acetylation status

Koumbi, L., Pollicino, T., Raimondo, G., Stampoulis, D., Khakoo, S. & Karayiannis, P., 15 Jul 2016, In : Virus Research. 220, p. 150-160 11 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2015

Determinants involved in hepatitis C virus and GB virus B primate host restriction

Marnata, C., Saulnier, A., Mompelat, D., Krey, T., Cohen, L., Boukadida, C., Warter, L., Fresquet, J., Vasiliauskaite, I., Escriou, N., Cosset, F. L., Rey, F. A., Lanford, R. E., Karayiannis, P., Rose, N. J., Lavillette, D. & Martin, A., 2015, In : Journal of Virology. 89, 23, p. 12131-12144 14 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2014

Changes in immune cell populations in the periphery and liver of GBV-B-infected and convalescent tamarins (Saguinus labiatus)

Hood, S. P., Mee, E. T., Perkins, H., Bowen, O., Dale, J. M., Almond, N. M., Karayiannis, P., Bright, H., Berry, N. J. & Rose, N. J., 22 Jan 2014, In : Virus Research. 179, 1, p. 93-101 9 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)

HBeaG negative variants and their role in the natural history of chronic hepatitis B virus infection

Alexopoulou, A. & Karayiannis, P., 2014, In : World Journal of Gastroenterology. 20, 24, p. 7644-7652 9 p.

Research output: Contribution to journalArticle

27 Citations (Scopus)

HCV NS5A co-operates with PKR in modulating HCV IRES-dependent translation

Karamichali, E., Foka, P., Tsitoura, E., Kalliampakou, K., Kazazi, D., Karayiannis, P., Georgopoulou, U. & Mavromara, P., 2014, In : Infection, Genetics and Evolution. 26, p. 113-122 10 p.

Research output: Contribution to journalArticle

6 Citations (Scopus)
2013

Dental treatment as a risk factor for hepatitis B and C viral infection. A review of the recent literature

Mahboobi, N., Porter, S. R., Karayiannis, P. & Alavian, S. M., 2013, In : Journal of Gastrointestinal and Liver Diseases. 22, 1, p. 79-86 8 p.

Research output: Contribution to journalArticle

26 Citations (Scopus)
2012

Oral fluid and hepatitis A, B and C: A literature review

Mahboobi, N., Porter, S. R., Karayiannis, P. & Alavian, S. M., Aug 2012, In : Journal of Oral Pathology and Medicine. 41, 7, p. 505-516 12 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Seroepidemiology of hepatitis A and E virus infections in Tehran, Iran: A population based study

Mohebbi, S. R., Rostami Nejad, M., Tahaei, S. M. E., Pourhoseingholi, M. A., Habibi, M., Azimzadeh, P., Naghoosi, H., Karayiannis, P. & Zali, M. R., Sep 2012, In : Transactions of the Royal Society of Tropical Medicine and Hygiene. 106, 9, p. 528-531 4 p.

Research output: Contribution to journalArticle

34 Citations (Scopus)
2011

Hepatitis B surface antigen: Relation to hepatitis B replication parameters in HBeAg-negative chronic hepatitis B

Manesis, E. K., Papatheodoridis, G. V., Tiniakos, D. G., Hadziyannis, E. S., Agelopoulou, O. P., Syminelaki, T., Papaioannou, C., Nastos, T. & Karayiannis, P., Jul 2011, In : Journal of Hepatology. 55, 1, p. 61-68 8 p.

Research output: Contribution to journalArticle

58 Citations (Scopus)

Predicting spontaneous clearance of acute hepatitis C virus in a large cohort of HIV-1-infected men

Thomson, E. C., Fleming, V. M., Main, J., Klenerman, P., Weber, J., Eliahoo, J., Smith, J., McClure, M. O. & Karayiannis, P., Jun 2011, In : Gut. 60, 6, p. 837-845 9 p.

Research output: Contribution to journalArticle

118 Citations (Scopus)

The detection of hepatitis viruses.

Karayiannis, P., 2011, In : Methods in molecular biology (Clifton, N.J.). 665, p. 79-100 22 p.

Research output: Contribution to journalArticle

1 Citation (Scopus)
2010

Dynamic coinfection with multiple viral subtypes in acute hepatitis C

Smith, J. A., Aberle, J. H., Fleming, V. M., Ferenci, P., Thomson, E. C., Karayiannis, P., McLean, A. R., Holzmann, H. & Klenerman, P., 15 Dec 2010, In : Journal of Infectious Diseases. 202, 12, p. 1770-1779 10 p.

Research output: Contribution to journalArticle

28 Citations (Scopus)
14 Citations (Scopus)

Steatosis and steatohepatitis in postmortem material from Northwestern Greece

Zois, C. D., Baltayiannis, G. H., Bekiari, A., Goussia, A., Karayiannis, P., Doukas, M., Demopoulos, D., Mitsellou, A., Vougiouklakis, T., Mitsi, V. & Tsianos, E. V., 21 Aug 2010, In : World Journal of Gastroenterology. 16, 31, p. 3944-3949 6 p.

Research output: Contribution to journalArticle

37 Citations (Scopus)
2009

Core mutations in patients with acute episodes of chronic HBV infection are associated with the emergence of new immune recognition sites and the development of high IgM Anti-HBc index values

Alexopoulou, A., Baltayiannis, G., Eroglu, C., Nastos, T., Dourakis, S. P., Archimandritis, A. J. & Karayiannis, P., Jan 2009, In : Journal of Medical Virology. 81, 1, p. 34-41 8 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Delayed anti-HCV antibody response in HIV-positive men acutely infected with HCV

Thomson, E. C., Nastouli, E., Main, J., Karayiannis, P., Eliahoo, J., Muir, D. & McClure, M. O., 2 Jan 2009, In : AIDS. 23, 1, p. 89-93 5 p.

Research output: Contribution to journalArticle

131 Citations (Scopus)

Diagnosing acute hepatitis C in HIV-infected patients: Nucleic acid testing compared with antibody and antigen-antibody detecting methods

Nastouli, E., Thomson, E. C., Karayiannis, P., Main, J., McClure, M. & Muir, D., Jan 2009, In : Journal of Clinical Virology. 44, 1, p. 78-80 3 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)

Long-term outcome of hepatitis B and hepatitis C virus co-infection and single HBV infection acquired in youth

Zampino, R., Marrone, A., Merola, A., Trani, B., Cirillo, G., Karayiannis, P., Coppola, N., Zappalà, R., Utili, R., Ruggiero, G. & Adinolfi, L. E., Dec 2009, In : Journal of Medical Virology. 81, 12, p. 2012-2020 9 p.

Research output: Contribution to journalArticle

10 Citations (Scopus)
2008

Effect of basal core promoter and pre-core mutations on hepatitis B virus replication

Jammeh, S., Tavner, F., Watson, R., Thomas, H. C. & Karayiannis, P., Apr 2008, In : Journal of General Virology. 89, 4, p. 901-909 9 p.

Research output: Contribution to journalArticle

90 Citations (Scopus)

Restricted quasispecies variation following infection with the GB virus B

McGarvey, M. J., Iqbal, M., Nastos, T. & Karayiannis, P., Jul 2008, In : Virus Research. 135, 1, p. 181-186 6 p.

Research output: Contribution to journalArticle

4 Citations (Scopus)

Tailored regimen of interferon alpha for HBeAg-positive chronic hepatitis B: A prospective controlled study

Luo, K., Mao, Q., Karayiannis, P., Liu, D., Liu, Z., Zhou, Y., Feng, X., Zhu, Y., Guo, Y., Jiang, R., Zhou, F., Peng, J. & Hou, J., Sep 2008, In : Journal of Viral Hepatitis. 15, 9, p. 684-689 6 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)
2007

Replicative competence of the T131I, K141E, and G145R surface variants of hepatitis B virus

Jammeh, S., Thomas, H. C. & Karayiannis, P., 2007, In : Journal of Infectious Diseases. 196, 7, p. 1010-1013 4 p.

Research output: Contribution to journalArticle

9 Citations (Scopus)
2006

Detection of a hepatitis B surface antigen variant emerging in a patient with chronic lymphocytic leukaemia treated with fludarabine

Alexopoulou, A., Dourakis, S. P., Pandelidaki, H., Archimandritis, A. J. & Karayiannis, P., Aug 2006, In : Journal of Medical Virology. 78, 8, p. 1043-1046 4 p.

Research output: Contribution to journalArticle

13 Citations (Scopus)

Hepatitis B virus reactivation in patients receiving chemotherapy for malignancies: Role of precore stop-codon and basic core promoter mutations

Alexopoulou, A., Theodorou, M., Dourakis, S. P., Karayiannis, P., Sagkana, E., Papanikolopoulos, K. & Archimandritis, A. J., Sep 2006, In : Journal of Viral Hepatitis. 13, 9, p. 591-596 6 p.

Research output: Contribution to journalArticle

24 Citations (Scopus)

Interferon-α therapy in HBeAg-negative chronic hepatitis B: A long-term prospective study from north-western Greece

Baltayiannis, G., Katsanos, K., Karayiannis, P. & Tsianos, E. V., Aug 2006, In : Alimentary Pharmacology and Therapeutics. 24, 3, p. 525-533 9 p.

Research output: Contribution to journalArticle

2 Citations (Scopus)
2005

Clinical reactivation during lamivudine treatment correlates with mutations in the precore/core promoter and polymerase regions of hepatitis B virus in patients with anti-hepatitis B e-positive chronic hepatitis

Marrone, A., Zampino, R., Karayannis, P., Cirillo, G., Cesaro, G., Guerrera, B., Ricciotti, R., Miraglia Del Giudice, E., Utili, R., Adinolfi, L. E. & Ruggiero, G., 15 Oct 2005, In : Alimentary Pharmacology and Therapeutics. 22, 8, p. 707-714 8 p.

Research output: Contribution to journalArticle

8 Citations (Scopus)

Heart transplantation in patients with chronic hepatitis B: Clinical evolution, molecular analysis, and effect of treatment

Zampino, R., Marrone, A., Ragone, E., Costagliola, L., Cirillo, G., Karayiannis, P., Ruggiero, G. & Utili, R., Nov 2005, In : Transplantation. 80, 9, p. 1340-1343 4 p.

Research output: Contribution to journalArticle

11 Citations (Scopus)
2004

Comparison of Hepatitis C Viral Loads in Patients with or without Coinfection with Different Genotypes

Schijman, A., Colina, R., Mukomolov, S., Kalinina, O., García, L., Broor, S., Bhupatiraju, A. V., Karayiannis, P., Khan, B., Mogdasy, C. & Cristina, J., Mar 2004, In : Clinical and Diagnostic Laboratory Immunology. 11, 2, p. 433-435 3 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)

Hepatitis B surface antigen variant with multiple mutations in the a determinant in an agammaglobulinemic patient

Alexopoulou, A., Baltayiannis, G., Jammeh, S., Waters, J., Dourakis, S. P. & Karayiannis, P., Jun 2004, In : Journal of Clinical Microbiology. 42, 6, p. 2861-2865 5 p.

Research output: Contribution to journalArticle

16 Citations (Scopus)

Identification of Unique Hepatitis C Virus Quasispecies in the Central Nervous System and Comparative Analysis of Internal Translational Efficiency of Brain, Liver, and Serum Variants

Forton, D. M., Karayiannis, P., Mahmud, N., Taylor-Robinson, S. D. & Thomas, H. C., May 2004, In : Journal of Virology. 78, 10, p. 5170-5183 14 p.

Research output: Contribution to journalArticle

192 Citations (Scopus)
2003

An outbreak of HBV and HCV infection in a paediatric oncology ward: Epidemiological investigations and prevention of further spread

Dumpis, U., Kovaļova, Ž., Jansons, J., Čupane, L., Sominskaya, I., Michailova, M., Karayiannis, P., Gardovska, D., Viazov, S., Ross, S., Roggendorf, M. & Pumpens, P., 1 Mar 2003, In : Journal of Medical Virology. 69, 3, p. 331-338 8 p.

Research output: Contribution to journalArticle

45 Citations (Scopus)

Changes in hypervariable region 1 of the envelope 2 glycoprotein of hepatitis C virus in children and adults with humoral immune defects

Gaud, U., Langer, B., Petropoulou, T., Thomas, H. C. & Karayiannis, P., 1 Mar 2003, In : Journal of Medical Virology. 69, 3, p. 350-356 7 p.

Research output: Contribution to journalArticle

26 Citations (Scopus)

Hepatitis C virus E2 and NS5A region variability during sequential treatment with two interferon-α preparations

Durante Mangoni, E., Forton, D. M., Ruggiero, G. & Karayiannis, P., 1 May 2003, In : Journal of Medical Virology. 70, 1, p. 62-73 12 p.

Research output: Contribution to journalArticle

19 Citations (Scopus)

Low HBeAg serum levels correlate with the presence of the double A1762T/G1764A core promoter mutation and a positive response to interferon in patients with chronic hepatitis B virus infection

Marrone, A., Zampino, R., Luongo, G., Utili, R., Karayiannis, P. & Ruggiero, G., 2003, In : Intervirology. 46, 4, p. 222-226 5 p.

Research output: Contribution to journalArticle

18 Citations (Scopus)
2002

Core promoter mutations 3 years after anti-hepatitis B e seroconversion in patients with chronic hepatitis B or hepatitis B and C infection and cancer remission

Zampino, R., Marrone, A., Karayiannis, P., Cirillo, G., Del Giudice, E. M., Rania, G., Utili, R. & Ruggiero, G., 2002, In : American Journal of Gastroenterology. 97, 9, p. 2426-2431 6 p., 5998.

Research output: Contribution to journalArticle

Core promoter mutations 3 years after anti-hepatitis B e seroconversion in patients with chronic hepatitis B or hepatitis B and C infection and cancer remission

Zampino, R., Marrone, A., Karayiannis, P., Cirillo, G., Miraglia del Giudice, E., Rania, G., Utili, R. & Ruggiero, G., 2002, In : American Journal of Gastroenterology. 97, 9, p. 2426-2431 6 p.

Research output: Contribution to journalArticle

5 Citations (Scopus)

Detection and significance of a G1862T variant of hepatitis B virus in Chinese patients with fulminant hepatitis

Hou, J., Lin, Y., Waters, J., Wang, Z., Min, J., Liao, H., Jiang, J., Chen, J., Luo, K. & Karayiannis, P., Sep 2002, In : Journal of General Virology. 83, 9, p. 2291-2298 8 p.

Research output: Contribution to journalArticle

38 Citations (Scopus)

Hepatitis C virus phylogeny: A useful clinical tool

Cristina, J., Mukomolov, S., Colina, R., Kalinina, O., García, L., Khan, B., Mogdasy, C. & Karayiannis, P., 2002, In : Acta Virologica. 46, 3, p. 179-182 4 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)

Intra-familial transmission of hepatitis B virus in Italy: Phylogenetic sequence analysis and amino-acid variation of the core gene

Zampino, R., Lobello, S., Chiaramonte, M., Venturi-Pasini, C., Dumpis, U., Thursz, M. & Karayiannis, P., 2002, In : Journal of Hepatology. 36, 2, p. 248-253 6 p.

Research output: Contribution to journalArticle

29 Citations (Scopus)

Sequential analysis of hepatitis B virus core promoter and precore regions in cancer survivor patients with chronic hepatitis B before, during and after interferon treatment

Zampino, R., Marrone, A., Cirillo, G., Del Giudice, E. M., Utili, R., Karayiannis, P., Liang, T. J. & Ruggiero, G., 2002, In : Journal of Viral Hepatitis. 9, 3, p. 183-188 6 p.

Research output: Contribution to journalArticle

20 Citations (Scopus)
2001

Hepatitis B surface antigen variants in vaccinees, blood donors and an interferon-treated patient

Seddigh-Tonekaboni, S., Lim, W. L., Young, B., Hou, J. L., Waters, J., Luo, K. X., Thomas, H. C. & Karayiannis, P., 2001, In : Journal of Viral Hepatitis. 8, 2, p. 154-158 5 p.

Research output: Contribution to journalArticle

34 Citations (Scopus)

Prevalence of HBV core promoter/precore/core mutations in Gambian chronic carriers

Dumpis, U., Mendy, M., Hill, A., Thursz, M., Hall, A., Whittle, H. & Karayiannis, P., 2001, In : Journal of Medical Virology. 65, 4, p. 664-670 7 p.

Research output: Contribution to journalArticle

25 Citations (Scopus)

Prevalence of naturally occurring surface gene variants of hepatitis B virus in nonimmunized surface antigen-Negative Chinese carriers

Hou, J., Wang, Z., Cheng, J., Lin, Y., Lau, G. K. K., Sun, J., Zhou, F., Waters, J., Karayiannis, P. & Luo, K., 2001, In : Hepatology. 34, 5, p. 1027-1034 8 p.

Research output: Contribution to journalArticle

154 Citations (Scopus)

Purification of woodchuck hepatitis surface antigen using a monoclonal antibody raised against the antigen

Waters, J. A., O'Neill, C., Abdul-Gader, A., Goldin, R., Karayiannis, P. & Monjardino, J., 2001, In : Journal of Virological Methods. 93, 1-2, p. 97-103 7 p.

Research output: Contribution to journalArticle

7 Citations (Scopus)

Reactivation of precore variant hepatitis B virus in a child with severe aplastic anaemia

Smith, P. R., Zampino, R., Gutteridge, C., Karayiannis, P. & Aitken, C., 2001, In : Journal of Medical Virology. 65, 3, p. 470-472 3 p.

Research output: Contribution to journalArticle

3 Citations (Scopus)