Yvonne Pannekoek

Multi locus sequence typing of Chlamydiales: clonal groupings within the obligate intracellular bacteria Chlamydia trachomatis (2008)

Pannekoek, Yvonne, Morelli, Giovanna, Kusecek, Barica, Morré, Servaas A, Ossewaarde, Jacobus M, Langerak, Ankie A, ...

Abstract Background The obligate intracellular growing bacterium Chlamydia trachomatis causes diseases like trachoma, urogenital infection and lymphogranuloma venereum with severe morbidity. Several...

PCR Assessment of Chlamydia trachomatis Infection of Semen Specimens Processed for Artificial Insemination

Pannekoek, Yvonne, Westenberg, Steven M., De Vries, Jan, Repping, Sjoerd, Spanjaard, Lodewijk, Eijk, Paul P., ...

In order to ascertain the microbiological quality of stored semen specimens processed for artificial insemination by a donor (AID), we developed a PCR assay targeting the chlamydial plasmid to detect...

NmeSI Restriction-Modification System Identified by Representational Difference Analysis of a Hypervirulent Neisseria meningitidis Strain

Bart, Aldert, Pannekoek, Yvonne, Dankert, Jacob, Van Der Ende, Arie

Neisseria meningitidis is a gram-negative bacterium that may cause meningitis, sepsis, or both. The increase in the incidence of meningococcal disease in various countries in the past 2 decades is...

Normal IncA Expression and Fusogenicity of Inclusions in Chlamydia trachomatis Isolates with the incA I47T Mutation

Pannekoek, Yvonne, Van Der Ende, Arie, Eijk, Paul P., Van Marle, Jan, De Witte, Moniek A., Ossewaarde, Jacobus M., ...

To investigate the correlation between the incA I47T mutation in Chlamydia trachomatis and the nonfusogenic phenotype, the incA genes of 25 isolates were sequenced. Four major sequence types were...

The N5-Glutamine S-Adenosyl-l-Methionine-Dependent Methyltransferase PrmC/HemK in Chlamydia trachomatis Methylates Class 1 Release Factors

Pannekoek, Yvonne, Heurgué-Hamard, Valérie, Langerak, Ankie A. J., Speijer, Dave, Buckingham, Richard H., Van Der Ende, Arie

The gene prmC, encoding the putative S-adenosyl-l-methionine (AdoMet)-dependent methyltransferase (MTase) of release factors (RFs) of the obligate intracellular pathogen Chlamydia trachomatis, was...

Interrelationship between Polymorphisms of incA, Fusogenic Properties of Chlamydia trachomatis Strains, and Clinical Manifestations in Patients in The Netherlands

Pannekoek, Yvonne, Spaargaren, Joke, Langerak, Ankie A. J., Merks, Judith, Morré, Servaas A., Van Der Ende, Arie

IncA variation among Dutch Chlamydia trachomatis isolates was investigated. Of 98 strains, two carried an incA with a premature stop codon, lacked IncA, and were nonfusogenic, while 96 contained an...

PCR Assessment of Chlamydia trachomatis Infection of Semen Specimens Processed for Artificial Insemination

Pannekoek, Yvonne, Westenberg, Steven M., De Vries, Jan, Repping, Sjoerd, Spanjaard, Lodewijk, Eijk, Paul P., ...

In order to ascertain the microbiological quality of stored semen specimens processed for artificial insemination by a donor (AID), we developed a PCR assay targeting the chlamydial plasmid to detect...

NmeSI Restriction-Modification System Identified by Representational Difference Analysis of a Hypervirulent Neisseria meningitidis Strain

Bart, Aldert, Pannekoek, Yvonne, Dankert, Jacob, Van Der Ende, Arie

Neisseria meningitidis is a gram-negative bacterium that may cause meningitis, sepsis, or both. The increase in the incidence of meningococcal disease in various countries in the past 2 decades is...

Normal IncA Expression and Fusogenicity of Inclusions in Chlamydia trachomatis Isolates with the incA I47T Mutation

Pannekoek, Yvonne, Van Der Ende, Arie, Eijk, Paul P., Van Marle, Jan, De Witte, Moniek A., Ossewaarde, Jacobus M., ...

To investigate the correlation between the incA I47T mutation in Chlamydia trachomatis and the nonfusogenic phenotype, the incA genes of 25 isolates were sequenced. Four major sequence types were...

The N5-Glutamine S-Adenosyl-l-Methionine-Dependent Methyltransferase PrmC/HemK in Chlamydia trachomatis Methylates Class 1 Release Factors

Pannekoek, Yvonne, Heurgué-Hamard, Valérie, Langerak, Ankie A. J., Speijer, Dave, Buckingham, Richard H., Van Der Ende, Arie

The gene prmC, encoding the putative S-adenosyl-l-methionine (AdoMet)-dependent methyltransferase (MTase) of release factors (RFs) of the obligate intracellular pathogen Chlamydia trachomatis, was...

Interrelationship between Polymorphisms of incA, Fusogenic Properties of Chlamydia trachomatis Strains, and Clinical Manifestations in Patients in The Netherlands

Pannekoek, Yvonne, Spaargaren, Joke, Langerak, Ankie A. J., Merks, Judith, Morré, Servaas A., Van Der Ende, Arie

IncA variation among Dutch Chlamydia trachomatis isolates was investigated. Of 98 strains, two carried an incA with a premature stop codon, lacked IncA, and were nonfusogenic, while 96 contained an...

Evaluation of a Chlamydophila psittaci Infection Diagnostic Platform for Zoonotic Risk Assessment▿

Verminnen, Kristel, Duquenne, Barbara, De Keukeleire, David, Duim, Birgitta, Pannekoek, Yvonne, Braeckman, Lutgart, ...

Reports on zoonotic transmission of Chlamydophila psittaci originating from poultry are incidentally published. During recent studies in European turkeys we isolated C. psittaci genotypes A, B, D, E,...