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Variant Signal Peptides of Vaccine Antigen, FHbp, Impair Processing Affecting Surface Localization and Antibody-Mediated Killing in Most Meningococcal Isolates.

da Silva RAG, Karlyshev AV, Oldfield NJ, Wooldridge KG, Bayliss CD, Ryan A, Griffin R.

Front Microbiol. 2019 Dec 19;10:2847. doi: 10.3389/fmicb.2019.02847. eCollection 2019.


Gastro-duodenal disease in Africa: Literature review and clinical data from Accra, Ghana.

Archampong TN, Asmah RH, Richards CJ, Martin VJ, Bayliss CD, Botão E, David L, Beleza S, Carrilho C.

World J Gastroenterol. 2019 Jul 14;25(26):3344-3358. doi: 10.3748/wjg.v25.i26.3344.


Phage-Resistant Phase-Variant Sub-populations Mediate Herd Immunity Against Bacteriophage Invasion of Bacterial Meta-Populations.

Turkington CJR, Morozov A, Clokie MRJ, Bayliss CD.

Front Microbiol. 2019 Jul 5;10:1473. doi: 10.3389/fmicb.2019.01473. eCollection 2019.


Potentiation of Phase Variation in Multiple Outer-Membrane Proteins During Spread of the Hyperinvasive Neisseria meningitidis Serogroup W ST-11 Lineage.

Green LR, Dave N, Adewoye AB, Lucidarme J, Clark SA, Oldfield NJ, Turner DPJ, Borrow R, Bayliss CD.

J Infect Dis. 2019 Aug 30;220(7):1109-1117. doi: 10.1093/infdis/jiz275.


Recombination of the Phase-Variable spnIII Locus Is Independent of All Known Pneumococcal Site-Specific Recombinases.

De Ste Croix M, Chen KY, Vacca I, Manso AS, Johnston C, Polard P, Kwun MJ, Bentley SD, Croucher NJ, Bayliss CD, Haigh RD, Oggioni MR.

J Bacteriol. 2019 Jul 10;201(15). pii: e00233-19. doi: 10.1128/JB.00233-19. Print 2019 Aug 1.


Assessment of fHbp Expression Level by Reverse Transcriptase Quantitative PCR and Promoter Sequence Analysis.

Cayrou C, Bayliss CD.

Methods Mol Biol. 2019;1969:237-249. doi: 10.1007/978-1-4939-9202-7_16.


Determination of Repeat Number and Expression States of Phase-Variable Loci Through Next Generation Sequencing and Bioinformatic Analysis.

Green LR, Haigh RD, Bayliss CD.

Methods Mol Biol. 2019;1969:83-92. doi: 10.1007/978-1-4939-9202-7_5.


Mutation and Selection in Bacteria: Modelling and Calibration.

Bayliss CD, Fallaize C, Howitt R, Tretyakov MV.

Bull Math Biol. 2019 Mar;81(3):639-675. doi: 10.1007/s11538-018-0529-9. Epub 2018 Nov 14.


PhasomeIt: an 'omics' approach to cataloguing the potential breadth of phase variation in the genus Campylobacter.

Aidley J, Wanford JJ, Green LR, Sheppard SK, Bayliss CD.

Microb Genom. 2018 Nov;4(11). doi: 10.1099/mgen.0.000228. Epub 2018 Oct 23.


Phase Variation of NadA in Invasive Neisseria meningitidis Isolates Impacts on Coverage Estimates for 4C-MenB, a MenB Vaccine.

Green LR, Lucidarme J, Dave N, Chan H, Clark S, Borrow R, Bayliss CD.

J Clin Microbiol. 2018 Aug 27;56(9). pii: e00204-18. doi: 10.1128/JCM.00204-18. Print 2018 Sep.


Random sorting of Campylobacter jejuni phase variants due to a narrow bottleneck during colonization of broiler chickens.

Wanford JJ, Lango-Scholey L, Nothaft H, Hu Y, Szymanski CM, Bayliss CD.

Microbiology. 2018 Jun;164(6):896-907. doi: 10.1099/mic.0.000669.


Clustered intergenic region sequences as predictors of factor H Binding Protein expression patterns and for assessing Neisseria meningitidis strain coverage by meningococcal vaccines.

Cayrou C, Akinduko AA, Mirkes EM, Lucidarme J, Clark SA, Green LR, Cooper HJ, Morrissey J, Borrow R, Bayliss CD.

PLoS One. 2018 May 30;13(5):e0197186. doi: 10.1371/journal.pone.0197186. eCollection 2018.


Phasome analysis of pathogenic and commensal Neisseria species expands the known repertoire of phase variable genes, and highlights common adaptive strategies.

Wanford JJ, Green LR, Aidley J, Bayliss CD.

PLoS One. 2018 May 15;13(5):e0196675. doi: 10.1371/journal.pone.0196675. eCollection 2018.


Intracellular replication of Streptococcus pneumoniae inside splenic macrophages serves as a reservoir for septicaemia.

Ercoli G, Fernandes VE, Chung WY, Wanford JJ, Thomson S, Bayliss CD, Straatman K, Crocker PR, Dennison A, Martinez-Pomares L, Andrew PW, Moxon ER, Oggioni MR.

Nat Microbiol. 2018 May;3(5):600-610. doi: 10.1038/s41564-018-0147-1. Epub 2018 Apr 16.


Limited Impact of Adolescent Meningococcal ACWY Vaccination on Neisseria meningitidis Serogroup W Carriage in University Students.

Oldfield NJ, Green LR, Parkhill J, Bayliss CD, Turner DPJ.

J Infect Dis. 2018 Jan 30;217(4):608-616. doi: 10.1093/infdis/jix596.


Managing a Mycotic Thoracoabdominal Aneurysm: The Importance of Molecular Diagnostics.

Bayliss CD, Booth KL, Williams R, Dark JH, Gould KF.

Ann Thorac Surg. 2017 Nov;104(5):e379-e381. doi: 10.1016/j.athoracsur.2017.07.005.


Coadministration of the Campylobacter jejuni N-Glycan-Based Vaccine with Probiotics Improves Vaccine Performance in Broiler Chickens.

Nothaft H, Perez-Muñoz ME, Gouveia GJ, Duar RM, Wanford JJ, Lango-Scholey L, Panagos CG, Srithayakumar V, Plastow GS, Coros C, Bayliss CD, Edison AS, Walter J, Szymanski CM.

Appl Environ Microbiol. 2017 Nov 16;83(23). pii: e01523-17. doi: 10.1128/AEM.01523-17. Print 2017 Dec 1.


Erratum for Aidley et al., "Nonselective Bottlenecks Control the Divergence and Diversification of Phase-Variable Bacterial Populations".

Aidley J, Rajopadhye S, Akinyemi NM, Lango-Scholey L, Jones MA, Bayliss CD.

mBio. 2017 Aug 8;8(4). pii: e00878-17. doi: 10.1128/mBio.00878-17. No abstract available.


Helicobacter pylori cagA and vacA genes in dyspeptic Ghanaian patients.

Archampong TN, Asmah RH, Aidoo EK, Wiredu EK, Gyasi RK, Adjei DN, Beleza S, Bayliss CD, Krogfelt K.

BMC Res Notes. 2017 Jun 27;10(1):231. doi: 10.1186/s13104-017-2542-8.


Phage exposure causes dynamic shifts in the expression states of specific phase-variable genes of Campylobacter jejuni.

Aidley J, Sørensen MCH, Bayliss CD, Brøndsted L.

Microbiology. 2017 Jun;163(6):911-919. doi: 10.1099/mic.0.000470. Epub 2017 Jun 8.


Rise in Group W Meningococcal Carriage in University Students, United Kingdom.

Oldfield NJ, Cayrou C, AlJannat MAK, Al-Rubaiawi AAA, Green LR, Dada S, Steels OD, Stirrup C, Wanford J, Atwah BAY, Bayliss CD, Turner DPJ.

Emerg Infect Dis. 2017 Jun;23(6):1009-1011. doi: 10.3201/eid2306.161768.


Nonselective Bottlenecks Control the Divergence and Diversification of Phase-Variable Bacterial Populations.

Aidley J, Rajopadhye S, Akinyemi NM, Lango-Scholey L, Jones MA, Bayliss CD.

mBio. 2017 Apr 4;8(2). pii: e02311-16. doi: 10.1128/mBio.02311-16. Erratum in: MBio. 2017 Aug 8;8(4):.


University vaccine campaign increases meningococcal ACWY vaccine coverage.

Turner DP, Oldfield NJ, Bayliss CD.

Public Health. 2017 Apr;145:1-3. doi: 10.1016/j.puhe.2016.12.010. Epub 2017 Jan 12. No abstract available.


Genome-wide association of functional traits linked with Campylobacter jejuni survival from farm to fork.

Yahara K, Méric G, Taylor AJ, de Vries SP, Murray S, Pascoe B, Mageiros L, Torralbo A, Vidal A, Ridley A, Komukai S, Wimalarathna H, Cody AJ, Colles FM, McCarthy N, Harris D, Bray JE, Jolley KA, Maiden MC, Bentley SD, Parkhill J, Bayliss CD, Grant A, Maskell D, Didelot X, Kelly DJ, Sheppard SK.

Environ Microbiol. 2017 Jan;19(1):361-380. doi: 10.1111/1462-2920.13628.


High Throughput Method for Analysis of Repeat Number for 28 Phase Variable Loci of Campylobacter jejuni Strain NCTC11168.

Lango-Scholey L, Aidley J, Woodacre A, Jones MA, Bayliss CD.

PLoS One. 2016 Jul 28;11(7):e0159634. doi: 10.1371/journal.pone.0159634. eCollection 2016.


Men B: lack of coverage or vaccine failure?

Bayliss CD, Morrissey JA, Borrow R.

Lancet. 2016 Feb 6;387(10018):531-532. doi: 10.1016/S0140-6736(16)00218-X. No abstract available.


Phase variation of a Type IIG restriction-modification enzyme alters site-specific methylation patterns and gene expression in Campylobacter jejuni strain NCTC11168.

Anjum A, Brathwaite KJ, Aidley J, Connerton PL, Cummings NJ, Parkhill J, Connerton I, Bayliss CD.

Nucleic Acids Res. 2016 Jun 2;44(10):4581-94. doi: 10.1093/nar/gkw019. Epub 2016 Jan 18.


Genomic Analysis of Serogroup Y Neisseria meningitidis Isolates Reveals Extensive Similarities Between Carriage-Associated and Disease-Associated Organisms.

Oldfield NJ, Harrison OB, Bayliss CD, Maiden MC, Ala'Aldeen DA, Turner DP.

J Infect Dis. 2016 Jun 1;213(11):1777-85. doi: 10.1093/infdis/jiw008. Epub 2016 Jan 7.


Investigation into the Antigenic Properties and Contributions to Growth in Blood of the Meningococcal Haemoglobin Receptors, HpuAB and HmbR.

Bidmos FA, Chan H, Praekelt U, Tauseef I, Ali YM, Kaczmarski EB, Feavers I, Bayliss CD.

PLoS One. 2015 Jul 24;10(7):e0133855. doi: 10.1371/journal.pone.0133855. eCollection 2015.


Genomic and global approaches to unravelling how hypermutable sequences influence bacterial pathogenesis.

Bidmos FA, Bayliss CD.

Pathogens. 2014 Feb 25;3(1):164-84. doi: 10.3390/pathogens3010164. Review.


Phase variation mediates reductions in expression of surface proteins during persistent meningococcal carriage.

Alamro M, Bidmos FA, Chan H, Oldfield NJ, Newton E, Bai X, Aidley J, Care R, Mattick C, Turner DP, Neal KR, Ala'aldeen DA, Feavers I, Borrow R, Bayliss CD.

Infect Immun. 2014 Jun;82(6):2472-84. doi: 10.1128/IAI.01521-14. Epub 2014 Mar 31.


The distribution and 'in vivo' phase variation status of haemoglobin receptors in invasive meningococcal serogroup B disease: genotypic and phenotypic analysis.

Lucidarme J, Findlow J, Chan H, Feavers IM, Gray SJ, Kaczmarski EB, Parkhill J, Bai X, Borrow R, Bayliss CD.

PLoS One. 2013 Sep 30;8(9):e76932. doi: 10.1371/journal.pone.0076932. eCollection 2013.


Prevalence and phase variable expression status of two autotransporters, NalP and MspA, in carriage and disease isolates of Neisseria meningitidis.

Oldfield NJ, Matar S, Bidmos FA, Alamro M, Neal KR, Turner DP, Bayliss CD, Ala'aldeen DA.

PLoS One. 2013 Jul 25;8(7):e69746. doi: 10.1371/journal.pone.0069746. Print 2013.


Distribution and diversity of the haemoglobin-haptoglobin iron-acquisition systems in pathogenic and non-pathogenic Neisseria.

Harrison OB, Bennett JS, Derrick JP, Maiden MCJ, Bayliss CD.

Microbiology. 2013 Sep;159(Pt 9):1920-1930. doi: 10.1099/mic.0.068874-0. Epub 2013 Jun 27.


Phase variation of PorA, a major outer membrane protein, mediates escape of bactericidal antibodies by Neisseria meningitidis.

Tauseef I, Ali YM, Bayliss CD.

Infect Immun. 2013 Apr;81(4):1374-80. doi: 10.1128/IAI.01358-12. Epub 2013 Feb 12.


Broad conditions favor the evolution of phase-variable loci.

Palmer ME, Lipsitch M, Moxon ER, Bayliss CD.

mBio. 2013 Jan 8;4(1):e00430-12. doi: 10.1128/mBio.00430-12.


Variation in the genomic locations and sequence conservation of STAR elements among staphylococcal species provides insight into DNA repeat evolution.

Purves J, Blades M, Arafat Y, Malik SA, Bayliss CD, Morrissey JA.

BMC Genomics. 2012 Sep 28;13:515. doi: 10.1186/1471-2164-13-515.


Evolution of simple sequence repeat-mediated phase variation in bacterial genomes.

Bayliss CD, Palmer ME.

Ann N Y Acad Sci. 2012 Sep;1267:39-44. doi: 10.1111/j.1749-6632.2012.06584.x.


Phase variable genes of Campylobacter jejuni exhibit high mutation rates and specific mutational patterns but mutability is not the major determinant of population structure during host colonization.

Bayliss CD, Bidmos FA, Anjum A, Manchev VT, Richards RL, Grossier JP, Wooldridge KG, Ketley JM, Barrow PA, Jones MA, Tretyakov MV.

Nucleic Acids Res. 2012 Jul;40(13):5876-89. doi: 10.1093/nar/gks246. Epub 2012 Mar 20.


Carriage of meningococci by university students, United Kingdom.

Ala'aldeen DA, Oldfield NJ, Bidmos FA, Abouseada NM, Ahmed NW, Turner DP, Neal KR, Bayliss CD.

Emerg Infect Dis. 2011 Sep;17(9):1762-3. doi: 10.3201/eid1709.101762. No abstract available.


Influence of the combination and phase variation status of the haemoglobin receptors HmbR and HpuAB on meningococcal virulence.

Tauseef I, Harrison OB, Wooldridge KG, Feavers IM, Neal KR, Gray SJ, Kriz P, Turner DPJ, Ala'Aldeen DAA, Maiden MCJ, Bayliss CD.

Microbiology. 2011 May;157(Pt 5):1446-1456. doi: 10.1099/mic.0.046946-0. Epub 2011 Feb 10.


Persistence, replacement, and rapid clonal expansion of meningococcal carriage isolates in a 2008 university student cohort.

Bidmos FA, Neal KR, Oldfield NJ, Turner DP, Ala'Aldeen DA, Bayliss CD.

J Clin Microbiol. 2011 Feb;49(2):506-12. doi: 10.1128/JCM.01322-10. Epub 2010 Dec 1.


Human antibody responses to the meningococcal factor H binding protein (LP2086) during invasive disease, colonization and carriage.

Ala'aldeen DA, Flint M, Oldfield NJ, Omer SA, McNeil LK, Jiang Q, Murphy E, Giardina PC, Novikova EG, Dodge-Scully IL, Bayliss CD, Turner DP, Neal KR, Hoiseth SK, Jansen KU, Anderson AS.

Vaccine. 2010 Nov 10;28(48):7667-75. doi: 10.1016/j.vaccine.2010.09.038. Epub 2010 Sep 25.


Microbial DNA metabolism, genome dynamics and human disease.

Bayliss CD, Casadesus J, Rocha E, Tønjum T.

FEMS Microbiol Rev. 2009 May;33(3):451-2. No abstract available.


Determinants of phase variation rate and the fitness implications of differing rates for bacterial pathogens and commensals.

Bayliss CD.

FEMS Microbiol Rev. 2009 May;33(3):504-20. doi: 10.1111/j.1574-6976.2009.00162.x. Epub 2009 Feb 13. Review.


Neisseria meningitidis escape from the bactericidal activity of a monoclonal antibody is mediated by phase variation of lgtG and enhanced by a mutator phenotype.

Bayliss CD, Hoe JC, Makepeace K, Martin P, Hood DW, Moxon ER.

Infect Immun. 2008 Nov;76(11):5038-48. doi: 10.1128/IAI.00395-08. Epub 2008 Aug 11.


RecJ, ExoI and RecG are required for genome maintenance but not for generation of genetic diversity by repeat-mediated phase variation in Haemophilus influenzae.

Kumar GA, Woodhall MR, Hood DW, Moxon ER, Bayliss CD.

Mutat Res. 2008 Apr 2;640(1-2):46-53. doi: 10.1016/j.mrfmmm.2007.12.002. Epub 2007 Dec 23.


Digalactoside expression in the lipopolysaccharide of Haemophilus influenzae and its role in intravascular survival.

Griffin R, Bayliss CD, Herbert MA, Cox AD, Makepeace K, Richards JC, Hood DW, Moxon ER.

Infect Immun. 2005 Oct;73(10):7022-6.

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