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Molecular Epidemiology, Ecology, and Evolution of Group A Streptococci.

Bessen DE, Smeesters PR, Beall BW.

Microbiol Spectr. 2018 Sep;6(5). doi: 10.1128/microbiolspec.CPP3-0009-2018. Review.


Incremental Contributions of FbaA and Other Impetigo-Associated Surface Proteins to Fitness and Virulence of a Classical Group A Streptococcal Skin Strain.

Rouchon CN, Ly AT, Noto JP, Luo F, Lizano S, Bessen DE.

Infect Immun. 2017 Oct 18;85(11). pii: e00374-17. doi: 10.1128/IAI.00374-17. Print 2017 Nov.


Differences in SpeB protease activity among group A streptococci associated with superficial, invasive, and autoimmune disease.

Ly AT, Noto JP, Walwyn OL, Tanz RR, Shulman ST, Kabat W, Bessen DE.

PLoS One. 2017 May 17;12(5):e0177784. doi: 10.1371/journal.pone.0177784. eCollection 2017.


Molecular Basis of Serotyping and the Underlying Genetic Organization of Streptococcus pyogenes.

Bessen DE.

In: Ferretti JJ, Stevens DL, Fischetti VA, editors. Streptococcus pyogenes : Basic Biology to Clinical Manifestations [Internet]. Oklahoma City (OK): University of Oklahoma Health Sciences Center; 2016-.
2016 Feb 10 [updated 2016 Mar 25].


Tissue tropisms in group A Streptococcus: what virulence factors distinguish pharyngitis from impetigo strains?

Bessen DE.

Curr Opin Infect Dis. 2016 Jun;29(3):295-303. doi: 10.1097/QCO.0000000000000262. Review.


Molecular epidemiology and genomics of group A Streptococcus.

Bessen DE, McShan WM, Nguyen SV, Shetty A, Agrawal S, Tettelin H.

Infect Genet Evol. 2015 Jul;33:393-418. doi: 10.1016/j.meegid.2014.10.011. Epub 2014 Oct 30. Review.


A systematic and functional classification of Streptococcus pyogenes that serves as a new tool for molecular typing and vaccine development.

Sanderson-Smith M, De Oliveira DM, Guglielmini J, McMillan DJ, Vu T, Holien JK, Henningham A, Steer AC, Bessen DE, Dale JB, Curtis N, Beall BW, Walker MJ, Parker MW, Carapetis JR, Van Melderen L, Sriprakash KS, Smeesters PR; M Protein Study Group.

J Infect Dis. 2014 Oct 15;210(8):1325-38. doi: 10.1093/infdis/jiu260. Epub 2014 May 5.


Updated model of group A Streptococcus M proteins based on a comprehensive worldwide study.

McMillan DJ, Drèze PA, Vu T, Bessen DE, Guglielmini J, Steer AC, Carapetis JR, Van Melderen L, Sriprakash KS, Smeesters PR.

Clin Microbiol Infect. 2013 May;19(5):E222-9. doi: 10.1111/1469-0691.12134. Epub 2013 Mar 7.


Population genomics: an investigative tool for epidemics.

Bessen DE.

Am J Pathol. 2012 Apr;180(4):1358-61. doi: 10.1016/j.ajpath.2012.01.007. Epub 2012 Feb 28. No abstract available.


Whole-genome association study on tissue tropism phenotypes in group A Streptococcus.

Bessen DE, Kumar N, Hall GS, Riley DR, Luo F, Lizano S, Ford CN, McShan WM, Nguyen SV, Dunning Hotopp JC, Tettelin H.

J Bacteriol. 2011 Dec;193(23):6651-63. doi: 10.1128/JB.05263-11. Epub 2011 Sep 23.


Population biology of Gram-positive pathogens: high-risk clones for dissemination of antibiotic resistance.

Willems RJ, Hanage WP, Bessen DE, Feil EJ.

FEMS Microbiol Rev. 2011 Sep;35(5):872-900. doi: 10.1111/j.1574-6976.2011.00284.x. Epub 2011 Jul 4. Review.


Population genetics of Streptococcus dysgalactiae subspecies equisimilis reveals widely dispersed clones and extensive recombination.

McMillan DJ, Bessen DE, Pinho M, Ford C, Hall GS, Melo-Cristino J, Ramirez M.

PLoS One. 2010 Jul 23;5(7):e11741. doi: 10.1371/journal.pone.0011741.


Variation in Streptococcus pyogenes NAD+ glycohydrolase is associated with tissue tropism.

Riddle DJ, Bessen DE, Caparon MG.

J Bacteriol. 2010 Jul;192(14):3735-46. doi: 10.1128/JB.00234-10. Epub 2010 May 21.


Tissue tropisms in group A streptococcal infections.

Bessen DE, Lizano S.

Future Microbiol. 2010 Apr;5(4):623-38. doi: 10.2217/fmb.10.28. Review.


Wiring the streptococcal network for alternative lifestyles.

Bessen DE, Tengra FK.

J Infect Dis. 2010 Mar 15;201(6):800-2. doi: 10.1086/651020. No abstract available.


Streptococcal upper respiratory tract infections and psychosocial stress predict future tic and obsessive-compulsive symptom severity in children and adolescents with Tourette syndrome and obsessive-compulsive disorder.

Lin H, Williams KA, Katsovich L, Findley DB, Grantz H, Lombroso PJ, King RA, Bessen DE, Johnson D, Kaplan EL, Landeros-Weisenberger A, Zhang H, Leckman JF.

Biol Psychiatry. 2010 Apr 1;67(7):684-91. doi: 10.1016/j.biopsych.2009.08.020. Epub 2009 Oct 14.


Population biology of the human restricted pathogen, Streptococcus pyogenes.

Bessen DE.

Infect Genet Evol. 2009 Jul;9(4):581-93. doi: 10.1016/j.meegid.2009.03.002. Epub 2009 Mar 21. Review.


Impact of orthologous gene replacement on the circuitry governing pilus gene transcription in streptococci.

Lizano S, Luo F, Tengra FK, Bessen DE.

PLoS One. 2008;3(10):e3450. doi: 10.1371/journal.pone.0003450. Epub 2008 Oct 20.


Role of Mga in group A streptococcal infection at the skin epithelium.

Luo F, Lizano S, Banik S, Zhang H, Bessen DE.

Microb Pathog. 2008 Sep;45(3):217-24. doi: 10.1016/j.micpath.2008.05.009. Epub 2008 Jun 7.


Relationships between emm and multilocus sequence types within a global collection of Streptococcus pyogenes.

Bessen DE, McGregor KF, Whatmore AM.

BMC Microbiol. 2008 Apr 11;8:59. doi: 10.1186/1471-2180-8-59.


Heterogeneity in the polarity of Nra regulatory effects on streptococcal pilus gene transcription and virulence.

Luo F, Lizano S, Bessen DE.

Infect Immun. 2008 Jun;76(6):2490-7. doi: 10.1128/IAI.01567-07. Epub 2008 Mar 17.


The search for a genetic divide between streptococcal pathogens and commensals.

Bessen DE.

Clin Infect Dis. 2007 Jun 1;44(11):1455-6. Epub 2007 Apr 19. No abstract available.


Tetracycline resistance in group a streptococci: emergence on a global scale and influence on multiple-drug resistance.

Ayer V, Tewodros W, Manoharan A, Skariah S, Luo F, Bessen DE.

Antimicrob Agents Chemother. 2007 May;51(5):1865-8. Epub 2007 Feb 16.


Detecting key structural features within highly recombined genes.

Wertz JE, McGregor KF, Bessen DE.

PLoS Comput Biol. 2007 Jan 26;3(1):e14.


Population genetics and linkage analysis of loci within the FCT region of Streptococcus pyogenes.

Kratovac Z, Manoharan A, Luo F, Lizano S, Bessen DE.

J Bacteriol. 2007 Feb;189(4):1299-310. Epub 2006 Oct 6.


The Seventh International Conference on the Genetics of Streptococci, Lactococci, and Enterococci.

Burne RA, Bessen DE, Broadbent JR, Claverys JP.

J Bacteriol. 2007 Feb;189(4):1209-18. Epub 2006 Sep 29. No abstract available. Erratum in: J Bacteriol. 2007 May;189(9):3682.


Role of streptococcal T antigens in superficial skin infection.

Lizano S, Luo F, Bessen DE.

J Bacteriol. 2007 Feb;189(4):1426-34. Epub 2006 Sep 29.


Decreased numbers of regulatory T cells suggest impaired immune tolerance in children with tourette syndrome: a preliminary study.

Kawikova I, Leckman JF, Kronig H, Katsovich L, Bessen DE, Ghebremichael M, Bothwell AL.

Biol Psychiatry. 2007 Feb 1;61(3):273-8. Epub 2006 Sep 25.


Evolution and global dissemination of macrolide-resistant group A streptococci.

Robinson DA, Sutcliffe JA, Tewodros W, Manoharan A, Bessen DE.

Antimicrob Agents Chemother. 2006 Sep;50(9):2903-11.


Evolution of transcription regulatory genes is linked to niche specialization in the bacterial pathogen Streptococcus pyogenes.

Bessen DE, Manoharan A, Luo F, Wertz JE, Robinson DA.

J Bacteriol. 2005 Jun;187(12):4163-72.


Multilocus sequence typing of Streptococcus pyogenes representing most known emm types and distinctions among subpopulation genetic structures.

McGregor KF, Spratt BG, Kalia A, Bennett A, Bilek N, Beall B, Bessen DE.

J Bacteriol. 2004 Jul;186(13):4285-94.


Prospective longitudinal study of children with tic disorders and/or obsessive-compulsive disorder: relationship of symptom exacerbations to newly acquired streptococcal infections.

Luo F, Leckman JF, Katsovich L, Findley D, Grantz H, Tucker DM, Lombroso PJ, King RA, Bessen DE.

Pediatrics. 2004 Jun;113(6):e578-85.


Group A streptococci from a remote community have novel multilocus genotypes but share emm types and housekeeping alleles with isolates from worldwide sources.

McGregor KF, Bilek N, Bennett A, Kalia A, Beall B, Carapetis JR, Currie BJ, Sriprakash KS, Spratt BG, Bessen DE.

J Infect Dis. 2004 Feb 15;189(4):717-23. Epub 2004 Feb 4.


Roles of the plasminogen activator streptokinase and the plasminogen-associated M protein in an experimental model for streptococcal impetigo.

Svensson MD, Sjöbring U, Luo F, Bessen DE.

Microbiology. 2002 Dec;148(Pt 12):3933-3945. doi: 10.1099/00221287-148-12-3933.


Genetics of childhood disorders: XXXII. Autoimmune disorders, part 5: streptococcal infection and autoimmunity, an epidemiological perspective.

Bessen DE.

J Am Acad Child Adolesc Psychiatry. 2001 Nov;40(11):1346-8. No abstract available.


Group A streptococcal infections and their potential role in neuropsychiatric disease.

Bessen DE, Lombroso PJ.

Adv Neurol. 2001;85:295-305. Review. No abstract available.


Directional gene movement from human-pathogenic to commensal-like streptococci.

Kalia A, Enright MC, Spratt BG, Bessen DE.

Infect Immun. 2001 Aug;69(8):4858-69. Retraction in: Infect Immun. 2009 Oct;77(10):4688.


Group A streptococcal genotypes from pediatric throat isolates in Rome, Italy.

Dicuonzo G, Gherardi G, Lorino G, Angeletti S, De Cesaris M, Fiscarelli E, Bessen DE, Beall B.

J Clin Microbiol. 2001 May;39(5):1687-90.


Multilocus sequence typing of Streptococcus pyogenes and the relationships between emm type and clone.

Enright MC, Spratt BG, Kalia A, Cross JH, Bessen DE.

Infect Immun. 2001 Apr;69(4):2416-27.


Recombination within natural populations of pathogenic bacteria: short-term empirical estimates and long-term phylogenetic consequences.

Feil EJ, Holmes EC, Bessen DE, Chan MS, Day NP, Enright MC, Goldstein R, Hood DW, Kalia A, Moore CE, Zhou J, Spratt BG.

Proc Natl Acad Sci U S A. 2001 Jan 2;98(1):182-7. Erratum in: Proc Natl Acad Sci U S A 2001 Mar 27;98(7):4276.


Role for a secreted cysteine proteinase in the establishment of host tissue tropism by group A streptococci.

Svensson MD, Scaramuzzino DA, Sjöbring U, Olsén A, Frank C, Bessen DE.

Mol Microbiol. 2000 Oct;38(2):242-53.


Contrasting molecular epidemiology of group A streptococci causing tropical and nontropical infections of the skin and throat.

Bessen DE, Carapetis JR, Beall B, Katz R, Hibble M, Currie BJ, Collingridge T, Izzo MW, Scaramuzzino DA, Sriprakash KS.

J Infect Dis. 2000 Oct;182(4):1109-16. Epub 2000 Sep 8.


Humanized in vivo model for streptococcal impetigo.

Scaramuzzino DA, McNiff JM, Bessen DE.

Infect Immun. 2000 May;68(5):2880-7.


Genetic linkage of exotoxin alleles and emm gene markers for tissue tropism in group A streptococci.

Bessen DE, Izzo MW, Fiorentino TR, Caringal RM, Hollingshead SK, Beall B.

J Infect Dis. 1999 Mar;179(3):627-36.


Numerous eruptive lesions of panniculitis associated with group A streptococcus bacteremia in an immunocompetent child.

Pao W, Duncan KO, Bolognia JL, Carroll CB, Hotez PJ, Bessen DE.

Clin Infect Dis. 1998 Sep;27(3):430-3.


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