1
|
Meier H, Bauer C, Finkenzeller W, Nentwich J, Städt M, Steininger P, Korn K, Essner A, Erbguth F. [Bornavirus encephalitis as a differential diagnosis to seronegative autoimmune encephalitis]. Nervenarzt 2022; 93:835-837. [PMID: 35024881 PMCID: PMC8756745 DOI: 10.1007/s00115-021-01259-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Accepted: 11/26/2021] [Indexed: 11/30/2022]
Affiliation(s)
- H Meier
- Klinik für Neurologie, Universitätsklinik bzw. Universitätsinstitut der Paracelsus Medizinischen Privatuniversität, Klinikum Nürnberg, Breslauer Str. 201, 90471, Nürnberg, Deutschland.
| | - C Bauer
- Klinik für Neurologie, Universitätsklinik bzw. Universitätsinstitut der Paracelsus Medizinischen Privatuniversität, Klinikum Nürnberg, Breslauer Str. 201, 90471, Nürnberg, Deutschland.
| | - W Finkenzeller
- Klinik für Neurologie, Universitätsklinik bzw. Universitätsinstitut der Paracelsus Medizinischen Privatuniversität, Klinikum Nürnberg, Breslauer Str. 201, 90471, Nürnberg, Deutschland
| | - J Nentwich
- Klinik für Innere Medizin, Universitätsklinik bzw. Universitätsinstitut der Paracelsus Medizinischen Privatuniversität, Klinikum Nürnberg, Breslauer Str. 201, 90471, Nürnberg, Deutschland
| | - M Städt
- Klinik für Neuroradiologie, Universitätsklinik bzw. Universitätsinstitut der Paracelsus Medizinischen Privatuniversität, Klinikum Nürnberg, Breslauer Str. 201, 90471, Nürnberg, Deutschland
| | - P Steininger
- Virologisches Institut, Universitätsklinikum Erlangen, Schlossgarten 4, 91054, Erlangen, Deutschland
| | - K Korn
- Virologisches Institut, Universitätsklinikum Erlangen, Schlossgarten 4, 91054, Erlangen, Deutschland
| | - A Essner
- Virologisches Institut, Universitätsklinikum Erlangen, Schlossgarten 4, 91054, Erlangen, Deutschland
| | - F Erbguth
- Klinik für Neurologie, Universitätsklinik bzw. Universitätsinstitut der Paracelsus Medizinischen Privatuniversität, Klinikum Nürnberg, Breslauer Str. 201, 90471, Nürnberg, Deutschland
| |
Collapse
|
2
|
Martínez-Poles J, Toledano R, Aledo-Serrano Á, Korn K, Coras R, Blümcke I, García-Morales I, Álvarez-Linera J, Gil-Nagel A. Herpes simplex virus encephalitis after temporal lobe resection: an infrequent but treatable complication of epilepsy surgery. Eur J Neurol 2020; 27:e60-e61. [PMID: 32794613 DOI: 10.1111/ene.14475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/07/2020] [Accepted: 08/11/2020] [Indexed: 11/27/2022]
Affiliation(s)
- J Martínez-Poles
- Neurology Department, Hospital La Luz, Madrid, Spain.,Epilepsy Unit, Neurology Department, Hospital Clínico San Carlos, Health Research Institute of the Hospital Clinico San Carlos, Madrid, Spain
| | - R Toledano
- Epilepsy Unit, Neurology Department, Hospital Ruber Internacional, Madrid, Spain.,Epilepsy Unit, Neurology Department, Hospital Ramón y Cajal, Madrid, Spain
| | - Á Aledo-Serrano
- Epilepsy Unit, Neurology Department, Hospital Ruber Internacional, Madrid, Spain
| | - K Korn
- Institute of Virology, University Hospital Erlangen, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | - R Coras
- Institute of Neuropathology, University Hospitals, Erlangen, Germany
| | - I Blümcke
- Institute of Neuropathology, University Hospitals, Erlangen, Germany
| | - I García-Morales
- Epilepsy Unit, Neurology Department, Hospital Clínico San Carlos, Health Research Institute of the Hospital Clinico San Carlos, Madrid, Spain.,Epilepsy Unit, Neurology Department, Hospital Ruber Internacional, Madrid, Spain
| | - J Álvarez-Linera
- Radiology Department, Hospital Ruber Internacional, Madrid, Spain
| | - A Gil-Nagel
- Epilepsy Unit, Neurology Department, Hospital Ruber Internacional, Madrid, Spain
| |
Collapse
|
3
|
Hofstra LM, Sauvageot N, Albert J, Alexiev I, Garcia F, Struck D, Van de Vijver DAMC, Åsjö B, Beshkov D, Coughlan S, Descamps D, Griskevicius A, Hamouda O, Horban A, Van Kasteren M, Kolupajeva T, Kostrikis LG, Liitsola K, Linka M, Mor O, Nielsen C, Otelea D, Paraskevis D, Paredes R, Poljak M, Puchhammer-Stöckl E, Sönnerborg A, Staneková D, Stanojevic M, Van Laethem K, Zazzi M, Zidovec Lepej S, Boucher CAB, Schmit JC, Wensing AMJ, Puchhammer-Stockl E, Sarcletti M, Schmied B, Geit M, Balluch G, Vandamme AM, Vercauteren J, Derdelinckx I, Sasse A, Bogaert M, Ceunen H, De Roo A, De Wit S, Echahidi F, Fransen K, Goffard JC, Goubau P, Goudeseune E, Yombi JC, Lacor P, Liesnard C, Moutschen M, Pierard D, Rens R, Schrooten Y, Vaira D, Vandekerckhove LPR, 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 D, Alexiev I, Lepej SZ, Begovac J, Kostrikis L, Demetriades I, Kousiappa I, Demetriou V, Hezka J, Linka M, Maly M, Machala L, Nielsen C, Jørgensen LB, Gerstoft J, Mathiesen L, Pedersen C, Nielsen H, Laursen A, Kvinesdal B, Liitsola K, Ristola M, Suni J, Sutinen J, Descamps D, Assoumou L, Castor G, Grude M, Flandre P, Storto A, 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 D, Hatzakis A, Zavitsanou A, Vassilakis A, Lazanas M, Chini M, Lioni A, Sakka V, Kourkounti S, Paparizos V, Antoniadou A, Papadopoulos A, Poulakou G, Katsarolis I, Protopapas K, Chryssos G, Drimis S, Gargalianos P, Xylomenos G, Lourida G, Psichogiou M, Daikos GL, Sipsas NV, Kontos A, Gamaletsou MN, Koratzanis G, Sambatakou H, Mariolis H, Skoutelis A, Papastamopoulos V, Georgiou O, Panagopoulos P, Maltezos E, Coughlan S, De Gascun C, Byrne C, Duffy M, Bergin C, Reidy D, Farrell G, Lambert J, O'Connor E, Rochford A, Low J, Coakely P, O'Dea S, Hall W, Mor O, Levi I, Chemtob D, Grossman Z, Zazzi M, de Luca A, Balotta C, Riva C, Mussini C, Caramma I, Capetti A, Colombo MC, Rossi C, Prati F, Tramuto F, Vitale F, Ciccozzi M, Angarano G, Rezza G, Kolupajeva T, Vasins O, Griskevicius A, Lipnickiene V, Schmit JC, Struck D, Sauvageot N, Hemmer R, Arendt V, Michaux C, Staub T, Sequin-Devaux C, Wensing AMJ, Boucher CAB, van de Vijver DAMC, van Kessel A, van Bentum PHM, Brinkman K, Connell BJ, van der Ende ME, Hoepelman IM, van Kasteren M, Kuipers M, Langebeek N, Richter C, Santegoets RMWJ, Schrijnders-Gudde L, Schuurman R, van de Ven BJM, Åsjö B, Kran AMB, Ormaasen V, Aavitsland P, Horban A, Stanczak JJ, Stanczak GP, Firlag-Burkacka E, Wiercinska-Drapalo A, Jablonowska E, Maolepsza E, Leszczyszyn-Pynka M, Szata W, Camacho R, Palma C, Borges F, Paixão T, Duque V, Araújo F, Otelea D, Paraschiv S, Tudor AM, Cernat R, Chiriac C, Dumitrescu F, Prisecariu LJ, Stanojevic M, Jevtovic D, Salemovic D, Stanekova D, Habekova M, Chabadová Z, Drobkova T, Bukovinova P, Shunnar A, Truska P, Poljak M, Lunar M, Babic D, Tomazic J, Vidmar L, Vovko T, Karner P, Garcia F, Paredes R, Monge S, Moreno S, Del Amo J, Asensi V, Sirvent JL, de Mendoza C, Delgado R, Gutiérrez F, Berenguer J, Garcia-Bujalance S, Stella N, de Los Santos I, Blanco JR, Dalmau D, Rivero M, Segura F, Elías MJP, Alvarez M, Chueca N, Rodríguez-Martín C, Vidal C, Palomares JC, Viciana I, Viciana P, Cordoba J, Aguilera A, Domingo P, Galindo MJ, Miralles C, Del Pozo MA, Ribera E, Iribarren JA, Ruiz L, de la Torre J, Vidal F, Clotet B, Albert J, Heidarian A, Aperia-Peipke K, Axelsson M, Mild M, Karlsson A, Sönnerborg A, Thalme A, Navér L, Bratt G, Karlsson A, Blaxhult A, Gisslén M, Svennerholm B, Bergbrant I, Björkman P, Säll C, Mellgren Å, Lindholm A, Kuylenstierna N, Montelius R, Azimi F, Johansson B, Carlsson M, Johansson E, Ljungberg B, Ekvall H, Strand A, Mäkitalo S, Öberg S, Holmblad P, Höfer M, Holmberg H, Josefson P, Ryding U. Transmission of HIV Drug Resistance and the Predicted Effect on Current First-line Regimens in Europe. Clin Infect Dis 2015; 62:655-663. [PMID: 26620652 PMCID: PMC4741360 DOI: 10.1093/cid/civ963] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [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: 06/08/2015] [Accepted: 11/06/2015] [Indexed: 11/13/2022] Open
Abstract
Transmitted human immunodeficiency virus drug resistance in Europe is stable at around 8%. The impact of baseline mutation patterns on susceptibility to antiretroviral drugs should be addressed using clinical guidelines. The impact on baseline susceptibility is largest for nonnucleoside reverse transcriptase inhibitors. Background. Numerous studies have shown that baseline drug resistance patterns may influence the outcome of antiretroviral therapy. Therefore, guidelines recommend drug resistance testing to guide the choice of initial regimen. In addition to optimizing individual patient management, these baseline resistance data enable transmitted drug resistance (TDR) to be surveyed for public health purposes. The SPREAD program systematically collects data to gain insight into TDR occurring in Europe since 2001. Methods. Demographic, clinical, and virological data from 4140 antiretroviral-naive human immunodeficiency virus (HIV)–infected individuals from 26 countries who were newly diagnosed between 2008 and 2010 were analyzed. Evidence of TDR was defined using the WHO list for surveillance of drug resistance mutations. Prevalence of TDR was assessed over time by comparing the results to SPREAD data from 2002 to 2007. Baseline susceptibility to antiretroviral drugs was predicted using the Stanford HIVdb program version 7.0. Results. The overall prevalence of TDR did not change significantly over time and was 8.3% (95% confidence interval, 7.2%–9.5%) in 2008–2010. The most frequent indicators of TDR were nucleoside reverse transcriptase inhibitor (NRTI) mutations (4.5%), followed by nonnucleoside reverse transcriptase inhibitor (NNRTI) mutations (2.9%) and protease inhibitor mutations (2.0%). Baseline mutations were most predictive of reduced susceptibility to initial NNRTI-based regimens: 4.5% and 6.5% of patient isolates were predicted to have resistance to regimens containing efavirenz or rilpivirine, respectively, independent of current NRTI backbones. Conclusions. Although TDR was highest for NRTIs, the impact of baseline drug resistance patterns on susceptibility was largest for NNRTIs. The prevalence of TDR assessed by epidemiological surveys does not clearly indicate to what degree susceptibility to different drug classes is affected.
Collapse
Affiliation(s)
- L Marije Hofstra
- Luxembourg Institute of Health, Luxembourg.,Department of Virology, University Medical Center Utrecht, The Netherlands
| | | | - Jan Albert
- Karolinska Institute, Solna.,Karolinska University Hospital, Stockholm, Sweden
| | - Ivailo Alexiev
- National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | - Federico Garcia
- Complejo Hospitalario Universitario de Granada, Instituto de Investigación IBS Granada; on behalf of Cohorte de Adultos de la Red de Investigación en SIDA, Spain
| | | | | | | | - Danail Beshkov
- National Center of Infectious and Parasitic Diseases, Sofia, Bulgaria
| | | | - Diane Descamps
- AP-HP Groupe hospitalier Bichat-Claude Bernard, IAME INSERM UMR 1137, Université Paris Diderot Sorbonne Paris Cité, Paris, France
| | | | | | | | | | | | | | - Kirsi Liitsola
- Department of Infectious Diseases, National Institute for Health and Welfare, Helsinki, Finland
| | - Marek Linka
- National Reference Laboratory for HIV/AIDS, National Institute of Public Health, Prague, Czech Republic
| | - Orna Mor
- National HIV Reference Laboratory, Chaim Sheba Medical Center, Tel-Hashomer, Israel
| | | | - Dan Otelea
- National Institute for Infectious Diseases "Prof. dr. Matei Bals", Bucharest, Romania
| | | | | | - Mario Poljak
- Faculty of Medicine, Slovenian HIV/AIDS Reference Centre, University of Ljubljana, Slovenia
| | | | - Anders Sönnerborg
- Karolinska Institute, Solna.,Karolinska University Hospital, Stockholm, Sweden
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
4
|
Grüner N, Viazov S, Korn K, Knöll A, Trippler M, Schlaak JF, Gerken G, Roggendorf M, Ross RS. Performance characteristics of the VERSANT hepatitis C virus RNA 1.0 (kPCR) assay. Int J Med Microbiol 2015; 305:627-35. [PMID: 26384868 DOI: 10.1016/j.ijmm.2015.08.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
HCV RNA assays are of central importance for virological diagnostics and for clinical planning and monitoring of an antiviral combination treatment of chronic HCV infections. The objective of the pre-market evaluation of the VERSANT HCV RNA 1.0 Assay (kPCR) was to collect analytical performance data for this new method of HCV RNA quantification and to compare them with the high standards that exist in this context. The assay exhibited a specificity of 100%. The mean intra- and inter-assay imprecision was 14.1% and 14.6%, respectively. The detection limit was determined to be 16IU/ml (95% confidence interval: 11.9-30.6IU/ml) and consequently corresponded to the manufacturer's claims (i.e. 15IU/ml). The test exhibited linearity for all HCV genotypes in a broad range from 15 to 10(8)IU HCV RNA/ml. Hence, the kPCR assay in general is well suitable for HCV RNA determinations in clinical practice. However, in a methodological comparison, a considerable under-quantification of the concentrations of HCV genotype 2 and 3 isolates was detected. Provided that the assay's manufacturer will quickly remedy this shortcoming, the VERSANT HCV RNA 1.0 (kPCR) can be called a completely reliable technique for HCV RNA quantification in routine virological diagnostics.
Collapse
Affiliation(s)
- Nico Grüner
- Institute of Virology, National Reference Centre for Hepatitis C, Essen University Hospital, University of Duisburg-Essen, Hufelandstr., D-45122 Essen, Germany
| | - S Viazov
- Institute of Virology, National Reference Centre for Hepatitis C, Essen University Hospital, University of Duisburg-Essen, Hufelandstr., D-45122 Essen, Germany
| | - K Korn
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schlossgarten 4, D-91054 Erlangen, Germany
| | - A Knöll
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Schlossgarten 4, D-91054 Erlangen, Germany
| | - M Trippler
- Department of Gastroenterology and Hepatology, Essen University Hospital, University of Duisburg-Essen, Hufelandstr., D-45122 Essen, Germany
| | - J F Schlaak
- Department of Gastroenterology and Hepatology, Essen University Hospital, University of Duisburg-Essen, Hufelandstr., D-45122 Essen, Germany
| | - G Gerken
- Department of Gastroenterology and Hepatology, Essen University Hospital, University of Duisburg-Essen, Hufelandstr., D-45122 Essen, Germany
| | - M Roggendorf
- Institute of Virology, National Reference Centre for Hepatitis C, Essen University Hospital, University of Duisburg-Essen, Hufelandstr., D-45122 Essen, Germany
| | - R Stefan Ross
- Institute of Virology, National Reference Centre for Hepatitis C, Essen University Hospital, University of Duisburg-Essen, Hufelandstr., D-45122 Essen, Germany.
| |
Collapse
|
5
|
Glowacka I, Korn K, Potthoff SA, Lehmann U, Kreipe HH, Ivens K, Barg-Hock H, Schulz TF, Heim A. Delayed Seroconversion and Rapid Onset of Lymphoproliferative Disease After Transmission of Human T-Cell Lymphotropic Virus Type 1 From a Multiorgan Donor. Clin Infect Dis 2013; 57:1417-24. [DOI: 10.1093/cid/cit545] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
6
|
Rabenau HF, Gottschalk R, Gürtler L, Haberl AE, Hamouda O, Himmelreich H, Korn K, Mertens T, Schmidt KW, Schmiedel S, Spickhoff A, Wirz G, Wutzler P, Wicker S. [Prevention of nosocomial transmission of human immunodeficiency virus (HIV) from HIV-positive healthcare workers. Recommendations of the German Association for the Control of Viral Diseases (DVV) e.V. and the Society for Virology (GfV) e.V]. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz 2013; 55:937-43. [PMID: 22842887 DOI: 10.1007/s00103-012-1546-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
To the best of our knowledge, the German Association for the Control of Viral Diseases (DVV) e.V. and the Society for Virology (GfV) e.V. are the first in Europe to provide precise recommendations for the management of health care workers (HCWs) who are infected with human immunodeficiency virus (HIV). Requirements for HIV-infected HCWs need to be clearly defined. With a permanent viral burden of less than or equal to 50 copies/mL, HIV-positive HCWs are allowed to perform any surgery and any invasive procedure, as long as the infected HCW uses double-gloving, undergoes follow-up routinely by occupational medicine professionals, undergoes a quarterly examination of viral burden, and has a regular medical examination by a physician who has expertise in the management of HIV. Unrestricted professional activity is only possible with a strict compliance to take antiretroviral therapy and if the HIV-infected HCW strictly adheres to the recommended infection control procedures. Complete compliance with the recommendation almost certainly leads to no HIV transmission risk in patient care.
Collapse
Affiliation(s)
- H F Rabenau
- Institut für Medizinische Virologie, Klinikum der Johann Wolfgang Goethe-Universität Frankfurt, Paul-Ehrlich-Str. 40, 60596, Frankfurt am Main, Deutschland.
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
7
|
Doerfler W, Weber S, Kemal K, Weiser B, Korn K, Anastos K, Burger H. Epigenetic modifications of HIV proviral LTRs: potential targets for cure. Retrovirology 2012. [PMCID: PMC3360369 DOI: 10.1186/1742-4690-9-s1-o4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
|
8
|
Schneidawind D, Dorn C, Faul C, Vogel W, Berg C, Beck R, Korn K, Dittmann H, Schleicher J, Erbersdobler A, Jahn G, Kanz L, Bethge W. Allogene Stammzelltransplantation bei akuter myeloischer Leukämie und HIV-Infektion. Transfusionsmedizin 2012. [DOI: 10.1055/s-0031-1284010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- D. Schneidawind
- Abteilung für Hämatologie, Onkologie, Immunologie, Rheumatologie und Pulmologie, Medizinische Universitätsklinik Tübingen
| | - C. Dorn
- Abteilung für Hämatologie, Onkologie, Immunologie, Rheumatologie und Pulmologie, Medizinische Universitätsklinik Tübingen
| | - C. Faul
- Abteilung für Hämatologie, Onkologie, Immunologie, Rheumatologie und Pulmologie, Medizinische Universitätsklinik Tübingen
| | - W. Vogel
- Abteilung für Hämatologie, Onkologie, Immunologie, Rheumatologie und Pulmologie, Medizinische Universitätsklinik Tübingen
| | - C. Berg
- Abteilung für Gastroenterologie, Hepatologie und Infektionskrankheiten, Medizinische Universitätsklinik Tübingen
| | - R. Beck
- Institut für Medizinische Virologie und Epidemiologie der Viruskrankheiten, Universitätsklinikum Tübingen
| | - K. Korn
- Virologisches Institut, Klinische und Molekulare Virologie, Nationales Referenzzentrum für Retroviren, Universitätsklinikum Erlangen
| | - H. Dittmann
- Abteilung für Nuklearmedizin, Radiologische Universitätsklinik Tübingen
| | - J. Schleicher
- Abteilung für Hämatologie und internistische Onkologie, Katharinenhospital Stuttgart
| | - A. Erbersdobler
- Institut für Pathologie, Medizinische Fakultät der Universität Rostock
| | - G. Jahn
- Institut für Medizinische Virologie und Epidemiologie der Viruskrankheiten, Universitätsklinikum Tübingen
| | - L. Kanz
- Abteilung für Hämatologie, Onkologie, Immunologie, Rheumatologie und Pulmologie, Medizinische Universitätsklinik Tübingen
| | - W. Bethge
- Abteilung für Hämatologie, Onkologie, Immunologie, Rheumatologie und Pulmologie, Medizinische Universitätsklinik Tübingen
| |
Collapse
|
9
|
Schneidawind D, Dorn C, Faul C, Vogel W, Berg C, Beck R, Korn K, Dittmann H, Schleicher J, Erbersdobler A, Jahn G, Kanz L, Bethge W. [Allogeneic stem cell transplantation for acute myeloid leukemia and HIV infection--case 3/2012]. Dtsch Med Wochenschr 2012; 137:495. [PMID: 22374660 DOI: 10.1055/s-0031-1299022] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
HISTORY AND ADMISSION FINDINGS A 27-year-old male patient with a past medical history of HIV presented with acute myeloid leukemia for allogeneic hematopoietic stem cell transplantation (HSCT). Highly active anti-retroviral therapy suppressed the viral load below detection threshold. INVESTIGATIONS There were no contraindications for allogeneic HSCT. TREATMENT AND COURSE Myeloablative conditioning consisted of total body irradiation and cyclophosphamide. Anti-thymocyte globulin, tacrolimus and mycophenolate mofetil were used for immunosuppression. Combined anti-retroviral therapy (nucleoside and nucleotide analog reverse-transcriptase inhibitor, boostered protease inhibitor, maraviroc and raltegravir) was maintained for allogeneic HSCT and viral load remained below detection threshold. No graft-versus-host disease or serious infectious complications occurred. The patient showed good graft function with stable hematopoiesis. Localized Kaposi's sarcoma was diagnosed six months after allogeneic HSCT and treated successfully with surgical excision and reduction of immunosuppression. Almost one year after allogeneic HSCT, the CD4+ cell count is rising and viral load remains below detection threshold with combined anti-retroviral therapy. CONCLUSION Allogeneic HSCT can be safely performed in HIV positive patients. Kaposi's sarcoma is a rare event after allogeneic HSCT and linked to strong immunosuppression.
Collapse
Affiliation(s)
- D Schneidawind
- Abteilung für Hämatologie, Onkologie, Immunologie, Rheumatologie und Pulmologie, Medizinische Universitätsklinik Tübingen
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
10
|
Korn K, Reil H, Ensser A, Knöll A. No evidence of XMRV infection in immunocompromised patients and HIV-positive individuals from Germany. Infection 2012; 40:181-4. [PMID: 22350961 DOI: 10.1007/s15010-012-0249-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2011] [Accepted: 02/06/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Xenotropic murine leukaemia virus-related virus (XMRV) has been detected in patients with prostate cancer and chronic fatigue syndrome (CFS). The detection of XMRV in healthy individuals has raised concern about a possible virus transmission by blood products. However, recent studies challenge the association between XMRV and human disease. This study investigated whether or not XMRV is present in patients with altered immune function and individuals at increased risk of blood-borne viral infections in Germany. METHODS We investigated 503 peripheral blood mononuclear cell (PBMC) samples from 240 patients with iatrogenic immune suppression (71 haematopoietic stem cell recipients, 132 solid organ transplant recipients, 37 others) and 311 PBMC samples from 302 patients with HIV-1 infection for the presence of proviral XMRV by real-time polymerase chain reaction (PCR). RESULTS All 814 PBMC samples from 542 patients tested negative for XMRV DNA and positive for an internal herpesvirus saimiri (HVS) control. Human genomic DNA was detected in all samples, and 90% of the samples contained >10,000 cell equivalents per XMRV PCR reaction. CONCLUSIONS Our failure to detect proviral XMRV provides evidence against the presence of XMRV in patients at increased risk of viral infections in Germany.
Collapse
Affiliation(s)
- K Korn
- Institute of Clinical and Molecular Virology, Friedrich-Alexander-University Erlangen-Nuremberg, Erlangen, Germany
| | | | | | | |
Collapse
|
11
|
Vandekerckhove LPR, Wensing AMJ, Kaiser R, Brun-Vezinet F, Clotet B, De Luca A, Dressler S, Garcia F, Geretti AM, Klimkait T, Korn K, Masquelier B, Perno CF, Schapiro J, Soriano V, Sönnerborg A, Vandamme ÀM, Verhofstede C, Walter H, Zazzi M, Boucher CA. Consensus statement of the European guidelines on clinical management of HIV-1 tropism testing. J Int AIDS Soc 2010. [PMCID: PMC3112869 DOI: 10.1186/1758-2652-13-s4-o7] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
12
|
Helm M, Walter H, Ehret R, Schmit JC, Kurowski M, Knechten H, Korn K, Braun P, Schmidt B. Differences of nine drug resistance interpretation systems in predicting short-term therapy outcomes of treatment-experienced HIV-1 infected patients: a retrospective observational cohort study. Eur J Med Res 2007; 12:231-42. [PMID: 17666312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023] Open
Abstract
OBJECTIVE Drug resistance interpretation systems are used to select the optimal antiretroviral therapy in HIV-infected patients. It is unclear how the systems perform in predicting therapy success and failure and in how far the interpretations are affected by insufficient drug levels. METHODS The accuracy of nine different interpretation systems in predicting therapy outcomes was evaluated using virological, immunological, pharmacological, and clinical data of 130 patients treated at 13 outpatient centers. Individual susceptibility scores of the interpretation systems were converted into active drug scores (ADS) and correlated with therapy success and failure, defined as viral load reduction of equal to or more (n=66) and less than 1 log10 copies/ml (n=64) at three months after drug resistance testing. RESULTS Three interpretation systems considered the respective therapies as more active compared to the other interpretation systems (p<0.01). These systems predicted therapy success better than the other systems, while the others performed better in predicting therapy failure. Thus, the overall rate of correctly predicted treatment outcomes was comparable between the different systems (73.1-80.0 %). Univariate and multivariate regression analysis revealed significant correlations between the ADS of all interpretation systems and virological therapy outcomes (p<0.0001). In contrast, only three interpretation systems were significantly correlated with immunological therapy outcomes in univariate and just one in multivariate models (p<0.05). Among 128 determinations of drug levels in 64 patient samples, 19.4 % revealed no detectable drug levels. The consideration of insufficient drug levels significantly improved the prediction accuracy of all interpretation systems (p<0.005). CONCLUSION Differences between interpretation systems in predicting therapy failures and success need to be considered for future consensus algorithms. The prediction accuracy of interpretation systems can be improved by consideration of plasma drug levels.
Collapse
Affiliation(s)
- M Helm
- Virological Institute, Clinical and Molecular Virology, University Hospital Erlangen, National Reference Centre for Retroviruses, Schlossgarten 4, 91054 Erlangen, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Korn K, Greiner-Stöffele T, Hahn U. Ribonuclease assays utilizing toluidine blue indicator plates, methylene blue, or fluorescence correlation spectroscopy. Methods Enzymol 2002; 341:142-53. [PMID: 11582775 DOI: 10.1016/s0076-6879(01)41150-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
Affiliation(s)
- K Korn
- GNOTHIS AB, Electrum 212, SE-16440 Kista, Sweden
| | | | | |
Collapse
|
14
|
Schmidt B, Walter H, Korn K. [Characterization of resistance in HIV. Comparison of geno- and phenotypic resistance to HIV-1 protease inhibitors]. Pharm Unserer Zeit 2001; 30:228-32. [PMID: 11400672 DOI: 10.1002/1615-1003(200105)30:3<228::aid-pauz228>3.0.co;2-h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- B Schmidt
- Institut für Klinische und Molekulare Virologie, Nationales Referenzzentrum für Retroviren, Schlossgarten 4, 91054 Erlangen.
| | | | | |
Collapse
|
15
|
Abstract
BACKGROUND There are conflicting reports on the role of hepatitis C virus in corneal pathology. PATIENT A 58-year-old male patient presented with recurrent peripheral corneal ulcers and corneal thinning in the left eye. There was a bilateral vascular pannus formation and a decreased ocular wetting measured by Schirmer testing. The posterior ocular segment was normal. There was no sign of any systemic rheumatic disease. Serological testing detected antibodies against hepatitis C virus. Hepatitis C virus RNA testing using a quantitative polymerase chain reaction method revealed hepatitis C virus RNA in serum (> 3.2 million copies/ml) and in tear samples (18,000 copies/ml) of the patient. In a control group of 7 consecutive patients with hepatitis C virus RNA detection in the serum but without ocular pathology, no hepatitis C virus RNA was detected in tear samples (detection limit: 1000 copies/ml). CONCLUSIONS Detection of hepatitis C virus RNA in lacrimal fluid of a patient with recurrent peripheral corneal ulcers may indicate a pathogenic role of hepatitis C virus in corneal pathology. Especially, since our patients with systemic hepatitis C virus infection but without ocular changes did not show hepatitis C virus RNA in their tears. Therefore, patients with recurrent corneal ulcers of unknown origin should be tested for systemic hepatitis C virus infection.
Collapse
Affiliation(s)
- H Wenkel
- Augenklinik mit Poliklinik, Universität Erlangen-Nürnberg, Schwabachanlage 6, 91054 Erlangen.
| | | | | |
Collapse
|
16
|
Schürer H, Buchynskyy A, Korn K, Famulok M, Welzei P, Hahn U. Fluorescence Correlation Spectroscopy as a New Method for the Investigation of Aptamer/Target Interactions. Biol Chem 2001; 382:479-81. [PMID: 11347896 DOI: 10.1515/bc.2001.058] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Fluorescence correlation spectroscopy is an attractive tool for monitoring molecular interactions in solution. We report here a new and highly sensitive method for studying the interaction of aptamers with their targets using this technique. In vitro selection technology is a combinatorial method for the generation of nucleic acid receptors (aptamers) that are capable of binding to various target molecules. Using the in vitro selection approach we isolated RNAs which bind to the antibiotic moenomycin with high affinity. The formation of RNA-moenomycin complexes was studied by fluorescence correlation spectroscopy with a tetramethylrhodamine-labeled derivative of moenomycin.
Collapse
Affiliation(s)
- H Schürer
- Universität Leipzig, Institut für Biochemie, Germany
| | | | | | | | | | | |
Collapse
|
17
|
Walter H, Schmidt B, Rascu A, Helm M, Moschik B, Paatz C, Kurowski M, Korn K, Uberla K, Harrer T. Phenotypic HIV-1 resistance correlates with treatment outcome of nelfinavir salvage therapy. Antivir Ther 2000; 5:249-56. [PMID: 11142619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
In order to analyse whether drug sensitivity testing would be beneficial for clinical decision-making in heavily pretreated patients, we retrospectively studied viral genotype and phenotypic drug resistance in 12 HIV-1-infected patients, each of them with a history of failing at least one therapeutic regimen including one or two protease inhibitors (PIs). The salvage therapy included nelfinavir as new PI in all cases. Four patients showed a sustained and five patients a transient viral load decrease. Three patients failed to show a significant decline of plasma HIV-1 RNA. In the baseline samples of these cases, resistance against all components of their combination therapy could be detected, whereas at least one antiretroviral drug was still active in the cases with transient treatment response. All patients with sustained therapy response harboured viruses that were either fully sensitive or resistant to only one of the drugs administered. In our study, phenotypic drug resistance was predictive for the success of antiretroviral salvage regimens.
Collapse
Affiliation(s)
- H Walter
- Institute of Clinical and Molecular Virology, German National Reference Centre for Retroviruses, University of Erlangen-Nürnberg
| | | | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Schmidt B, Korn K, Moschik B, Paatz C, Uberla K, Walter H. Low level of cross-resistance to amprenavir (141W94) in samples from patients pretreated with other protease inhibitors. Antimicrob Agents Chemother 2000; 44:3213-6. [PMID: 11036057 PMCID: PMC101637 DOI: 10.1128/aac.44.11.3213-3216.2000] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The therapeutic success of an antiretroviral salvage regimen containing protease inhibitors (PI) is limited by PI-resistant viral strains exhibiting various degrees of resistance and cross-resistance. To evaluate the extent of cross-resistance to the new PI amprenavir, 155 samples from 132 human immunodeficiency virus type 1-infected patients were analyzed for viral genotype by direct sequencing of the protease gene. Concomitantly, drug sensitivity to indinavir, saquinavir, ritonavir, nelfinavir, and amprenavir was analyzed by a recombinant virus assay. A total of 111 patients had been pretreated with 1-4 PI, but all were naive to amprenavir. A total of 105 samples (67.7%) were sensitive to amprenavir; 25 samples (16.1%) were intermediately resistant, and another 25 samples were highly resistant (4- to 8-fold- and >8-fold-reduced sensitivity, respectively). The mutations 46I/L, 54L/V, 84V, and 90M showed the strongest association with amprenavir resistance (P < 0. 0001). The scoring system using 84V and/or any two of a number of mutations (10I/R/V/F, 46I/L, 54L/V, and 90M) predicted amprenavir resistance with a sensitivity of 86.0% and a specificity of 81.0% within the analyzed group of samples. Of 62 samples with resistance against 4 PI, 23 (37.1%) were still sensitive to amprenavir. In comparison, only 2 of 23 samples (8.7%) from nelfinavir-naive patients with resistance against indinavir, saquinavir, and ritonavir were still sensitive to nelfinavir. Amprenavir thus appears to be an interesting alternative for PI salvage therapy.
Collapse
Affiliation(s)
- B Schmidt
- Institute of Clinical and Molecular Virology, German National Reference Centre for Retroviruses, University of Erlangen-Nürnberg, Erlangen, Germany.
| | | | | | | | | | | |
Collapse
|
19
|
Korn K, Eftychiou V, Miller S. Telling a teen she's HIV-positive. Adv Nurse Pract 2000; 8:23. [PMID: 11761546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, S.D., USA
| | | | | |
Collapse
|
20
|
Schmidt B, Walter H, Moschik B, Paatz C, van Vaerenbergh K, Vandamme AM, Schmitt M, Harrer T, Uberla K, Korn K. Simple algorithm derived from a geno-/phenotypic database to predict HIV-1 protease inhibitor resistance. AIDS 2000; 14:1731-8. [PMID: 10985309 DOI: 10.1097/00002030-200008180-00007] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND Resistance against protease inhibitors (PI) can either be analysed genotypically or phenotypically. However, the interpretation of genotypic data is difficult, particularly for PI, because of the unknown contributions of several mutations to resistance and cross-resistance. OBJECTIVE Development of an algorithm to predict PI phenotype from genotypic data. METHODS Recombinant viruses containing patient-derived protease genes were analysed for sensitivity to indinavir, saquinavir, ritonavir and nelfinavir. Drug resistance-associated mutations were determined by direct sequencing. geno- and phenotypic data were compared for 119 samples from 97 HIV-1 infected patients. RESULTS Samples with one or two mutations in the gene for the protease were phenotypically sensitive in 74.3%, whereas 83.6% of samples with five or more mutations were resistant against all PI tested. Some mutations (361, 63P, 71V/T, 771) were frequent both in sensitive and resistant samples, whereas others (241, 30N, 461/L, 48V, 54V, 82A/F/T/S, 84V, 90M) were predominantly present in resistant samples. Therefore, the presence or absence of a single drug resistance-associated mutation predicted phenotypic PI resistance with high sensitivity (96.5-100%) but low specificity (13.3-57.4%). A more specific algorithm was obtained by taking into account the total number of drug resistance-associated mutations in the gene for the protease and restricting these to certain key positions for the PI. The algorithm was subsequently validated by analysis of 72 independent samples. CONCLUSION With an optimized algorithm, phenotypic PI resistance can be predicted by viral genotype with good sensitivity (89.1-93.0%) and specificity (82.6-93.3%). The reliability and relevance of this algorithm should be further evaluated in clinical practice.
Collapse
Affiliation(s)
- B Schmidt
- Institute of Clinical and Molecular Virology, German National Reference Centre for Retroviruses, University of Erlangen-Nürnberg, Erlangen
| | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Klinge J, Lugauer S, Korn K, Heininger U, Stehr K. Comparison of immunogenicity and reactogenicity of a measles, mumps and rubella (MMR) vaccine in German children vaccinated at 9-11, 12-14 or 15-17 months of age. Vaccine 2000; 18:3134-40. [PMID: 10856793 DOI: 10.1016/s0264-410x(00)00096-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Children aged 9-11, 12-14 or 15-17 months, respectively were vaccinated with a measles, mumps and rubella (MMR) vaccine and serum antibody responses and reactogenicity were compared. The data of 118 children could be analysed (group 1=9-11 months, n=46; group 2=12-14 months, n=29, group 3, 15-17 months, n=43). The only significant difference observed was for seroconversion against measles virus between group 1 and group 3 (84.8% vs 100%, p=0.012). No serious adverse events were reported. Local side reactions were mild, infrequent and independent of age. Immunisation against MMR is safe and effective even when administered before the currently recommended age of 12 months.
Collapse
Affiliation(s)
- J Klinge
- Hospital for Children and Adolescents, University of Erlangen-Nuremberg, Germany
| | | | | | | | | |
Collapse
|
22
|
Korn K, Wennmalm S, Foerster HH, Hahn U, Rigler R. Analysis of the RNase T1 mediated cleavage of an immobilized gapped heteroduplex via fluorescence correlation spectroscopy. Biol Chem 2000; 381:259-63. [PMID: 10782997 DOI: 10.1515/bc.2000.033] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
We report a new method for studying the activity of hydrolytic enzymes. Fluorescence correlation spectroscopy was used to observe online the hydrolyzation of a rhodamine B-labeled substrate by ribonuclease T1. A gapped heteroduplex substrate - a hybrid of a ribooligonucleotide and two smaller complementary deoxyribooligonucleotides - was immobilized via biotin to a streptavidin-coated surface of a coverslip. The reported method opens the possibility to study the cleavage of small substrates differing only slightly in molecular weight from the enzyme reaction product. The use of fluorescence correlation spectroscopy allows the detection of very low enzyme concentrations (down to 10(-21) mol 0.05 fM of RNase T1, corresponding to about 600 RNase T1 molecules in 0.02 ml).
Collapse
Affiliation(s)
- K Korn
- Institut für Biochemie, Fakultät für Biowissenschaften, Pharmazie und Psychologie, Universität Leipzig, Germany
| | | | | | | | | |
Collapse
|
23
|
Abstract
Functional ribonuclease A was presented on the surface of the filamentous phage M13 by fusion to the minor coat protein. RNase activity of the fusion protein was shown by a zymogram assay. In addition, we established a modified method for preparing RNase-displaying phages without contaminating host RNases.
Collapse
Affiliation(s)
- K Korn
- Institut für Biochemie, Fakultät für Biowissenschaften, Pharmazie und Psychologie, Universität Leipzig, Germany
| | | | | |
Collapse
|
24
|
Schwab M, Böswald M, Korn K, Ruder H. Epstein-Barr virus in pediatric patients after renal transplantation. Clin Nephrol 2000; 53:132-9. [PMID: 10711415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND Pediatric allograft recipients are at an increased risk for lymphotropic virus-associated disorders, particularly in association with primary EBV infection. PATIENTS AND METHODS Twenty-nine children, adolescents and young adults after renal transplantation were studied in comparison with a healthy young adult control group for evidence of primary, reactivated or chronic active EBV infection at two different time points. RESULTS Prevalence of antibodies against viral capsid antigen (VCA) was > or = 90% in both groups, whereas anti-Epstein-Barr nuclear antigen (EBNA) was detected only in 19 of 26 seropositive patients compared with seropositive controls (p = 0.01). Persistence of EBV DNA in leukocytes for > or = 6 months was observed in 11 seropositive patients (38%) and one control patient (p < 0.007) using nested polymerase chain reaction. In the transplant recipients, 3 cases of primary EBV infection and 3 cases of chronic active EBV infection were identified. One of these cases developed a non-Hodgkin lymphoma one year later. CONCLUSION The results suggest that determination of pretransplant antibody status in recipients, rapid detection of EBV infection in seronegative symptomatic recipients, and regular screening for persistent EBV DNA in patients at risk to develop post-transplantation lymphoproliferative disease should be performed.
Collapse
Affiliation(s)
- M Schwab
- Dr. Margarete Fischer-Bosch Institute of Clinical Pharmacology, Stuttgart, Germany
| | | | | | | |
Collapse
|
25
|
Korn K. Nutrition information on the Internet. J Am Acad Nurse Pract 1999; 11:355-6. [PMID: 10692708 DOI: 10.1111/j.1745-7599.1999.tb00592.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion 57059, USA
| |
Collapse
|
26
|
Walter H, Schmidt B, Korn K, Vandamme AM, Harrer T, Uberla K. Rapid, phenotypic HIV-1 drug sensitivity assay for protease and reverse transcriptase inhibitors. J Clin Virol 1999; 13:71-80. [PMID: 10405894 DOI: 10.1016/s1386-6532(99)00010-4] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND Development of drug resistance is one of the major reasons for the failure of antiretroviral therapy of HIV-1 infection. Knowing the drug sensitivity-resistance profile of viruses present in a patient prior to treatment or change in treatment could help to optimize therapy. OBJECTIVE Development of a rapid standardized phenotypic HIV-1 drug sensitivity assay for protease (PR) and reverse transcriptase (RT) inhibitors. DESIGN The PR gene (codons 1-99) and the 5' part of the RT gene (codons 1-300) of HIV-1 is amplified from the plasma of infected individuals by RT-PCR and ligated into a proviral clone of HIV-1 containing a deletion of the PR gene and the 5' part of the RT gene. Bacteria are transformed with the ligation product and plasmid DNA is prepared from a library of transformed bacteria. The plasmid DNA is transfected into 293 T cells and recombinant virus is harvested from the supernatant of the transfected cells 2 days after transfection. The sensitivity of the recombinant virus is determined with the help of a sensitive indicator cell line. RESULTS Recombinant viruses were generated with high efficiency. Determination of the drug sensitivity of the recombinant viruses with an indicator cell line was highly reproducible. The recombinant viruses accurately reflected the sensitivity-resistance profile of the parental viruses. The phenotypic drug sensitivity determined by this assay correlated well with the treatment history of patients. CONCLUSION This assay system should allow rapid, high-throughput analyses of phenotypic HIV-1 drug sensitivity for PR and RT inhibitors. Due to the efficient generation of recombinant viruses, propagation of the recombinant viruses in cell culture is not required prior to the determination of the sensitivity of the recombinant viruses. The risk of selecting fitter non-resistant viruses due to culture conditions is minimized.
Collapse
Affiliation(s)
- H Walter
- Institut für Klinische und Molekulare Virologie, Universität Erlangen-Nürnberg, Germany
| | | | | | | | | | | |
Collapse
|
27
|
Muir P, Ras A, Klapper PE, Cleator GM, Korn K, Aepinus C, Fomsgaard A, Palmer P, Samuelsson A, Tenorio A, Weissbrich B, van Loon AM. Multicenter quality assessment of PCR methods for detection of enteroviruses. J Clin Microbiol 1999; 37:1409-14. [PMID: 10203496 PMCID: PMC84788 DOI: 10.1128/jcm.37.5.1409-1414.1999] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We conducted a multicenter evaluation of commercial and in-house PCR methods for the detection of enteroviruses. Three coded panels of test and control RNA samples, artificial clinical specimens, and representative enterovirus serotypes were used to assess amplification methods, RNA extraction methods, and reactivities with different enterovirus serotypes. Despite several differences between PCR methods, there was good agreement, although some variation in sensitivity was observed. Most PCR methods were able to detect enterovirus RNA derived from 0.01 50% tissue culture infective dose (TCID50) and were able to detect at least 1 TCID50 of enterovirus in cerebrospinal fluid, stool, or throat swab specimens. Most were also able to detect a wide range of enterovirus serotypes, although serotypic identification was not possible. Some laboratories experienced false-positive results due to PCR contamination, which appeared to result mainly from cross-contamination of specimens during RNA extraction. Provided that this problem is overcome, these PCR methods will prove to be a sensitive and rapid alternative to cell culture for the diagnosis of enterovirus infection.
Collapse
Affiliation(s)
- P Muir
- Department of Virology, Guy's, King's College & St Thomas' Hospitals' School of Medicine, London, United Kingdom.
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
28
|
Korn K. Substance abuse resources on the Internet. J Am Acad Nurse Pract 1999; 11:211-3. [PMID: 10504936 DOI: 10.1111/j.1745-7599.1999.tb00565.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion 57059, USA
| |
Collapse
|
29
|
Korn K. Professional liability and risk management information on the Internet. J Am Acad Nurse Pract 1999; 11:165-6. [PMID: 10504931 DOI: 10.1111/j.1745-7599.1999.tb00557.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
30
|
Korn K. Managed care and HCFA information on the Internet. J Am Acad Nurse Pract 1999; 11:69-70. [PMID: 10504923 DOI: 10.1111/j.1745-7599.1999.tb00543.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
31
|
Korn K. Hepatitis information on the Internet. J Am Acad Nurse Pract 1999; 11:21-2. [PMID: 10504918 DOI: 10.1111/j.1745-7599.1999.tb00535.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
32
|
Abstract
The current generation voice recognition products truly offer the promise of voice recognition systems, that are financially and operationally acceptable for use in a health care facility. Although the initial capital outlay for the purchase of such equipment may be substantial, the long-term benefit is felt to outweigh the expense. The ability to utilize computer equipment for educational purposes and information management alone helps to rationalize the cost. In addition, it is important to remember that the Internet has become a substantial source of information which provides another functional use for this equipment. Although one can readily see the implication for such a program in clinical practice, other uses for the program should not be overlooked. Uses far beyond the writing of clinic notes and correspondence can be easily envisioned. Utilization of voice recognition software offers clinical practices the ability to produce quality printed records in a timely and cost-effective manner. After learning procedures for the selected product and appropriately formatting word processing software and printers, printed progress notes should be able to be produced in less time than traditional dictation and transcription methods. Although certain procedures and practices may need to be altered, or may preclude optimal utilization of this type of system, many advantages are apparent. It is recommended that facilities consider utilization of Voice Recognition products such as Dragon Systems Naturally Speaking Software, or at least consider a trial of this method with one of the limited-feature products, if current dictation practices are unsatisfactory or excessively costly. Free downloadable trial software or single user software can provide a reduced-cost method for trial evaluation of such products if a major commitment is not felt to be desired. A list of voice recognition software manufacturer web sites may be accessed through the following: http://www.dragonsys.com/ http://www.software.ibm/com/is/voicetype/ http://www.lhs.com/
Collapse
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
33
|
Korn K. Computer-based office messaging and fax. J Am Acad Nurse Pract 1998; 10:467-8. [PMID: 10085860 DOI: 10.1111/j.1745-7599.1998.tb00472.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
34
|
Korn K. Disability information on the Internet. J Am Acad Nurse Pract 1998; 10:413-4. [PMID: 10085853 DOI: 10.1111/j.1745-7599.1998.tb00528.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
35
|
Waiser J, Budde K, Schreiber M, Korn K, Stenglein S, Drenckhahn JT, Böhler T, Hauser I, Neumayer HH. Effectiveness of deferred therapy with ganciclovir in renal allograft recipients with cytomegalovirus disease. Transplant Proc 1998; 30:2083-5. [PMID: 9723399 DOI: 10.1016/s0041-1345(98)00547-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- J Waiser
- Department of Internal Medicine-Nephrology, Charité, Humboldt-University, Berlin, Germany
| | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Korn K. Allergy information on the Internet. J Am Acad Nurse Pract 1998; 10:321-2. [PMID: 9801567 DOI: 10.1111/j.1745-7599.1998.tb00512.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
37
|
Korn K. Mental health information on the Internet. J Am Acad Nurse Pract 1998; 10:267-8. [PMID: 9801562 DOI: 10.1111/j.1745-7599.1998.tb00504.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
38
|
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
39
|
Korn K. HIV and AIDS information on the Internet. J Am Acad Nurse Pract 1998; 10:173-4. [PMID: 9801551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
40
|
Korn K. Cardiac information on the Internet. J Am Acad Nurse Pract 1998; 10:127-8. [PMID: 9644412 DOI: 10.1111/j.1745-7599.1998.tb01206.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
41
|
Affiliation(s)
- K Korn
- Student Health Service, University of South Dakota, Vermillion, USA
| |
Collapse
|
42
|
Muir P, Kämmerer U, Korn K, Mulders MN, Pöyry T, Weissbrich B, Kandolf R, Cleator GM, van Loon AM. Molecular typing of enteroviruses: current status and future requirements. The European Union Concerted Action on Virus Meningitis and Encephalitis. Clin Microbiol Rev 1998; 11:202-27. [PMID: 9457433 PMCID: PMC121380 DOI: 10.1128/cmr.11.1.202] [Citation(s) in RCA: 190] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Human enteroviruses have traditionally been typed according to neutralization serotype. This procedure is limited by the difficulty in culturing some enteroviruses, the availability of antisera for serotyping, and the cost and technical complexity of serotyping procedures. Furthermore, the impact of information derived from enterovirus serotyping is generally perceived to be low. Enteroviruses are now increasingly being detected by PCR rather than by culture. Classical typing methods will therefore no longer be possible in most instances. An alternative means of enterovirus typing, employing PCR in conjunction with molecular genetic techniques such as nucleotide sequencing or nucleic acid hybridization, would complement molecular diagnosis, may overcome some of the problems associated with serotyping, and would provide additional information regarding the epidemiology and biological properties of enteroviruses. We argue the case for developing a molecular typing system, discuss the genetic basis of such a system, review the literature describing attempts to identify or classify enteroviruses by molecular methods, and suggest ways in which the goal of molecular typing may be realized.
Collapse
Affiliation(s)
- P Muir
- Department of Virology, United Medical School of Guy's Hospital, London, United Kingdom.
| | | | | | | | | | | | | | | | | |
Collapse
|
43
|
Affiliation(s)
- K Korn
- University of South Dakota, Student Health, Vermillion, USA
| |
Collapse
|
44
|
Korn K, Schmidt B, Greil J, Beck J, Fleckenstein B. Hepatitis G virus (HGV)--association with graft failure after hematopoietic stem cell transplantation? Beitr Infusionsther Transfusionsmed 1997; 34:16-20. [PMID: 9356655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
A group of 28 children was investigated after hematopoietic stem cell transplantation for evidence of hepatitis G virus (HGV) infection. HGV RNA was detected in 14 of the 28 patients (50%) and persisted in 9 of 11 patients with follow-up samples for up to 32 months. Whereas thrombopoiesis was delayed in 2 of the 14 HGV-RNA-negative patients (14.3%), 6 out of 14 (42.9%) patients in the HGV-RNA-positive group had a delayed thrombopoiesis and 2 of the latter group had to be retransplanted because of complete graft failure. These were the only cases with hepatitis C virus (HCV) coinfection. Significant liver diseases were also found only in these 2 patients with HGV and HCV coinfection. These results suggest that HGV infection may significantly influence the engraftment in patients after hematopoietic stem cell transplantation, particularly if coinfection with HCV occurs.
Collapse
Affiliation(s)
- K Korn
- Institut für Klinische und Molekulare Virologie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Deutschland
| | | | | | | | | |
Collapse
|
45
|
Korn K. Occupational health and safety on the Internet. J Am Acad Nurse Pract 1997; 9:521-2. [PMID: 9429377 DOI: 10.1111/j.1745-7599.1997.tb01016.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- K Korn
- University of South Dakota, Vermillion, USA
| |
Collapse
|
46
|
Korn K. Dermatology on the Internet. J Am Acad Nurse Pract 1997; 9:487-8. [PMID: 9391372 DOI: 10.1111/j.1745-7599.1997.tb01008.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- K Korn
- University of South Dakota, Vermillion, USA
| |
Collapse
|
47
|
Schwab M, Behrens R, Ruder H, Korn K. Primary manifestation of Henoch-Schönlein purpura during immunosuppressive treatment. Arch Dis Child 1997; 77:184-5. [PMID: 9301369 PMCID: PMC1717264 DOI: 10.1136/adc.77.2.183d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
48
|
Korn K. Cancer information on the Internet. J Am Acad Nurse Pract 1997; 9:385-7. [PMID: 9325812 DOI: 10.1111/j.1745-7599.1997.tb01260.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
|
49
|
Klein M, Geoghegan J, Schmidt K, Böckler D, Korn K, Wittekind C, Scheele J. Conversion of recurrent delta-positive hepatitis B infection to seronegativity with famciclovir after liver transplantation. Transplantation 1997; 64:162-3. [PMID: 9233718 DOI: 10.1097/00007890-199707150-00028] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Recurrent hepatitis B infection after liver transplantation is associated with poor graft and patient survival. Famciclovir is a nucleoside with virostatic action in hepatitis B infection. We report the case of a 51-year-old patient who developed recurrent delta-positive hepatitis B infection after liver transplantation. After famciclovir treatment, he became seronegative for hepatitis B early and hepatitis B surface antigens and developed protective anti-hepatitis B surface antibody titers. METHODS After recurrent hepatitis B was confirmed, treatment with famciclovir was initiated. RESULTS Eighteen days after starting famciclovir, the patient became seronegative for hepatitis B early antigen and delta antigen, and hepatitis B virus DNA was no longer detectable in serum. Three months later, the patient became hepatitis B surface antigen negative and remains well 16 months later with increasing anti-hepatitis B surface levels. CONCLUSIONS Antiviral treatment with famciclovir may be useful in treatment of delta-positive hepatitis B infection following liver transplantation. Further evaluation of famciclovir in treatment and prevention of hepatitis B in these patients is warranted.
Collapse
Affiliation(s)
- M Klein
- Department of Surgery, Friedrich-Schiller University of Jena, Germany
| | | | | | | | | | | | | |
Collapse
|
50
|
Affiliation(s)
- K Korn
- University of South Dakota, Vermillion, USA
| |
Collapse
|