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High-Level Macrolide Resistance Due to the Mega Element [mef(E)/mel] in Streptococcus pneumoniae.

Schroeder MR, Lohsen S, Chancey ST, Stephens DS.

Front Microbiol. 2019 Apr 24;10:868. doi: 10.3389/fmicb.2019.00868. eCollection 2019.


Heteroresistance to the model antimicrobial peptide polymyxin B in the emerging Neisseria meningitidis lineage 11.2 urethritis clade: mutations in the pilMNOPQ operon.

Tzeng YL, Berman Z, Toh E, Bazan JA, Turner AN, Retchless AC, Wang X, Nelson DE, Stephens DS.

Mol Microbiol. 2019 Jan;111(1):254-268. doi: 10.1111/mmi.14153. Epub 2018 Nov 13.


Reply letter to "Fatal meningococcemia due to Neisseria meningitidis serogroup Y in a vaccinated child receiving eculizumab".

Dretler AW, Rouphael NG, Stephens DS.

Hum Vaccin Immunother. 2018;14(11):2803-2804. doi: 10.1080/21645515.2018.1491247. Epub 2018 Jul 16. No abstract available.


Mass chemoprophylaxis for control of outbreaks of meningococcal disease.

McNamara LA, MacNeil JR, Cohn AC, Stephens DS.

Lancet Infect Dis. 2018 Sep;18(9):e272-e281. doi: 10.1016/S1473-3099(18)30124-5. Epub 2018 May 29. Review.


Architecting the Data Loading Process for an i2b2 Research Data Warehouse: Full Reload versus Incremental Updating.

Post AR, Ai M, Kalsanka Pai A, Overcash M, Stephens DS.

AMIA Annu Symp Proc. 2018 Apr 16;2017:1411-1420. eCollection 2017.


Progress toward the global control of Neisseria meningitidis: 21st century vaccines, current guidelines, and challenges for future vaccine development.

Dretler AW, Rouphael NG, Stephens DS.

Hum Vaccin Immunother. 2018 May 4;14(5):1146-1160. doi: 10.1080/21645515.2018.1451810. Epub 2018 May 9. Review.


Expansion of a urethritis-associated Neisseria meningitidis clade in the United States with concurrent acquisition of N. gonorrhoeae alleles.

Retchless AC, Kretz CB, Chang HY, Bazan JA, Abrams AJ, Norris Turner A, Jenkins LT, Trees DL, Tzeng YL, Stephens DS, MacNeil JR, Wang X.

BMC Genomics. 2018 Mar 2;19(1):176. doi: 10.1186/s12864-018-4560-x.


The microbiome: current and future view of an ancient paradigm.

Neish AS, Pacifici R, Mulle JG, Kraft CS, Stephens DS.

Future Microbiol. 2017 Aug;12:831-834. doi: 10.2217/fmb-2017-0083. Epub 2017 Jun 29. No abstract available.


Large Cluster of Neisseria meningitidis Urethritis in Columbus, Ohio, 2015.

Bazan JA, Turner AN, Kirkcaldy RD, Retchless AC, Kretz CB, Briere E, Tzeng YL, Stephens DS, Maierhofer C, Del Rio C, Abrams AJ, Trees DL, Ervin M, Licon DB, Fields KS, Roberts MW, Dennison A, Wang X.

Clin Infect Dis. 2017 Jul 1;65(1):92-99. doi: 10.1093/cid/cix215.


Emergence of a new Neisseria meningitidis clonal complex 11 lineage 11.2 clade as an effective urogenital pathogen.

Tzeng YL, Bazan JA, Turner AN, Wang X, Retchless AC, Read TD, Toh E, Nelson DE, Del Rio C, Stephens DS.

Proc Natl Acad Sci U S A. 2017 Apr 18;114(16):4237-4242. doi: 10.1073/pnas.1620971114. Epub 2017 Apr 3.


Boosters for meningococcal B vaccines?

Stephens DS.

Lancet Infect Dis. 2017 Jan;17(1):4-6. doi: 10.1016/S1473-3099(16)30377-2. Epub 2016 Oct 11. No abstract available. Erratum in: Lancet Infect Dis. 2017 Jan;17(1):17.


Macrolide Resistance in Streptococcus pneumoniae.

Schroeder MR, Stephens DS.

Front Cell Infect Microbiol. 2016 Sep 21;6:98. eCollection 2016. Review.


Metadata-driven Clinical Data Loading into i2b2 for Clinical and Translational Science Institutes.

Post AR, Pai AK, Willard R, May BJ, West AC, Agravat S, Granite SJ, Winslow RL, Stephens DS.

AMIA Jt Summits Transl Sci Proc. 2016 Jul 20;2016:184-93. eCollection 2016.


Notes from the Field: Increase in Neisseria meningitidis-Associated Urethritis Among Men at Two Sentinel Clinics - Columbus, Ohio, and Oakland County, Michigan, 2015.

Bazan JA, Peterson AS, Kirkcaldy RD, Briere EC, Maierhofer C, Turner AN, Licon DB, Parker N, Dennison A, Ervin M, Johnson L, Weberman B, Hackert P, Wang X, Kretz CB, Abrams AJ, Trees DL, Del Rio C, Stephens DS, Tzeng YL, DiOrio M, Roberts MW.

MMWR Morb Mortal Wkly Rep. 2016 Jun 3;65(21):550-2. doi: 10.15585/mmwr.mm6521a5.


Ebola Virus Disease: Experience and Decision Making for the First Patients outside of Africa.

Stephens DS, Ribner BS, Gartland BD, Feistritzer NR, Farley MM, Larsen CP, Fox JT.

PLoS Med. 2015 Jul 28;12(7):e1001857. doi: 10.1371/journal.pmed.1001857. eCollection 2015 Jul.


Regulation of capsule in Neisseria meningitidis.

Tzeng YL, Thomas J, Stephens DS.

Crit Rev Microbiol. 2016 Sep;42(5):759-72. doi: 10.3109/1040841X.2015.1022507. Epub 2015 Jun 19. Review.


Antimicrobial peptide resistance in Neisseria meningitidis.

Tzeng YL, Stephens DS.

Biochim Biophys Acta. 2015 Nov;1848(11 Pt B):3026-31. doi: 10.1016/j.bbamem.2015.05.006. Epub 2015 May 19. Review.


Composite mobile genetic elements disseminating macrolide resistance in Streptococcus pneumoniae.

Chancey ST, Agrawal S, Schroeder MR, Farley MM, Tettelin H, Stephens DS.

Front Microbiol. 2015 Feb 9;6:26. doi: 10.3389/fmicb.2015.00026. eCollection 2015.


Transcriptional attenuation controls macrolide inducible efflux and resistance in Streptococcus pneumoniae and in other Gram-positive bacteria containing mef/mel(msr(D)) elements.

Chancey ST, Bai X, Kumar N, Drabek EF, Daugherty SC, Colon T, Ott S, Sengamalay N, Sadzewicz L, Tallon LJ, Fraser CM, Tettelin H, Stephens DS.

PLoS One. 2015 Feb 19;10(2):e0116254. doi: 10.1371/journal.pone.0116254. eCollection 2015.


Meningococcal carriage among Georgia and Maryland high school students.

Harrison LH, Shutt KA, Arnold KE, Stern EJ, Pondo T, Kiehlbauch JA, Myers RA, Hollick RA, Schmink S, Vello M, Stephens DS, Messonnier NE, Mayer LW, Clark TA.

J Infect Dis. 2015 Jun 1;211(11):1761-8. doi: 10.1093/infdis/jiu679. Epub 2014 Dec 11.


Vaccines at what price?

Stephens DS, Ahmed R, Orenstein WA.

Vaccine. 2014 Feb 19;32(9):1029-30. doi: 10.1016/j.vaccine.2013.12.066. Epub 2014 Jan 9. No abstract available.


Molecular signatures of antibody responses derived from a systems biology study of five human vaccines.

Li S, Rouphael N, Duraisingham S, Romero-Steiner S, Presnell S, Davis C, Schmidt DS, Johnson SE, Milton A, Rajam G, Kasturi S, Carlone GM, Quinn C, Chaussabel D, Palucka AK, Mulligan MJ, Ahmed R, Stephens DS, Nakaya HI, Pulendran B.

Nat Immunol. 2014 Feb;15(2):195-204. doi: 10.1038/ni.2789. Epub 2013 Dec 15.


Models of interinstitutional partnerships between research intensive universities and minority serving institutions (MSI) across the Clinical Translational Science Award (CTSA) consortium.

Ofili EO, Fair A, Norris K, Verbalis JG, Poland R, Bernard G, Stephens DS, Dubinett SM, Imperato-McGinley J, Dottin RP, Pulley J, West A, Brown A, Mellman TA.

Clin Transl Sci. 2013 Dec;6(6):435-43. doi: 10.1111/cts.12118. Epub 2013 Oct 3.


Description and nomenclature of Neisseria meningitidis capsule locus.

Harrison OB, Claus H, Jiang Y, Bennett JS, Bratcher HB, Jolley KA, Corton C, Care R, Poolman JT, Zollinger WD, Frasch CE, Stephens DS, Feavers I, Frosch M, Parkhill J, Vogel U, Quail MA, Bentley SD, Maiden MC.

Emerg Infect Dis. 2013 Apr;19(4):566-73. doi: 10.3201/eid1904.111799.


Environmental survival of Neisseria meningitidis.

Tzeng YL, Martin LE, Stephens DS.

Epidemiol Infect. 2014 Jan;142(1):187-90. doi: 10.1017/S095026881300085X. Epub 2013 Apr 10.


Attachment and invasion of Neisseria meningitidis to host cells is related to surface hydrophobicity, bacterial cell size and capsule.

Bartley SN, Tzeng YL, Heel K, Lee CW, Mowlaboccus S, Seemann T, Lu W, Lin YH, Ryan CS, Peacock C, Stephens DS, Davies JK, Kahler CM.

PLoS One. 2013;8(2):e55798. doi: 10.1371/journal.pone.0055798. Epub 2013 Feb 6.


Meningococcal disease: changes in epidemiology and prevention.

Chang Q, Tzeng YL, Stephens DS.

Clin Epidemiol. 2012;4:237-45. doi: 10.2147/CLEP.S28410. Epub 2012 Sep 19.


Acquired inducible antimicrobial resistance in Gram-positive bacteria.

Chancey ST, Zähner D, Stephens DS.

Future Microbiol. 2012 Aug;7(8):959-78. doi: 10.2217/fmb.12.63. Review.


Prevention of serogroup B meningococcal disease.

Stephens DS.

Lancet. 2012 Feb 18;379(9816):592-4. doi: 10.1016/S0140-6736(11)61934-X. Epub 2012 Jan 18. No abstract available.


Neisseria meningitidis: biology, microbiology, and epidemiology.

Rouphael NG, Stephens DS.

Methods Mol Biol. 2012;799:1-20. doi: 10.1007/978-1-61779-346-2_1. Review.


Mitis group streptococci express variable pilus islet 2 pili.

Zähner D, Gandhi AR, Yi H, Stephens DS.

PLoS One. 2011;6(9):e25124. doi: 10.1371/journal.pone.0025124. Epub 2011 Sep 22.


The Atlanta Clinical and Translational Science Institute: clinical and translational science education and training partnership.

Stephens DS, West AC, Ofili EO, Boyan BD, Blumberg HM.

Clin Transl Sci. 2011 Jun;4(3):143-5. doi: 10.1111/j.1752-8062.2011.00293.x. No abstract available.


Diversity of factor H-binding protein in Neisseria meningitidis carriage isolates.

Marsh JW, Shutt KA, Pajon R, Tulenko MM, Liu S, Hollick RA, Kiehlbauch JA, Clark TA, Stephens DS, Arnold KE, Myers RA, Mayer LW, Harrison LH.

Vaccine. 2011 Aug 11;29(35):6049-58. doi: 10.1016/j.vaccine.2011.06.025. Epub 2011 Jun 24.


Virulence factors of gram-negative bacteria in sepsis with a focus on Neisseria meningitidis.

Livorsi DJ, Stenehjem E, Stephens DS.

Contrib Microbiol. 2011;17:31-47. doi: 10.1159/000324008. Epub 2011 Jun 9. Review.


Pilus backbone protein PitB of Streptococcus pneumoniae contains stabilizing intramolecular isopeptide bonds.

Zähner D, Gandhi AR, Stuchlik O, Reed M, Pohl J, Stephens DS.

Biochem Biophys Res Commun. 2011 Jun 10;409(3):526-31. doi: 10.1016/j.bbrc.2011.05.038. Epub 2011 May 12.


sodC-based real-time PCR for detection of Neisseria meningitidis.

Dolan Thomas J, Hatcher CP, Satterfield DA, Theodore MJ, Bach MC, Linscott KB, Zhao X, Wang X, Mair R, Schmink S, Arnold KE, Stephens DS, Harrison LH, Hollick RA, Andrade AL, Lamaro-Cardoso J, de Lemos AP, Gritzfeld J, Gordon S, Soysal A, Bakir M, Sharma D, Jain S, Satola SW, Messonnier NE, Mayer LW.

PLoS One. 2011 May 5;6(5):e19361. doi: 10.1371/journal.pone.0019361.


Induction of efflux-mediated macrolide resistance in Streptococcus pneumoniae.

Chancey ST, Zhou X, Zähner D, Stephens DS.

Antimicrob Agents Chemother. 2011 Jul;55(7):3413-22. doi: 10.1128/AAC.00060-11. Epub 2011 May 2.


Outer-membrane-vesicle vaccines: old but not forgotten.

Stephens DS.

Lancet Infect Dis. 2011 Jun;11(6):421-2. doi: 10.1016/S1473-3099(11)70096-2. Epub 2011 Apr 12. No abstract available. Erratum in: Lancet Infect Dis. 2011 Aug;11(8):584.


The human host defense peptide LL-37 interacts with Neisseria meningitidis capsular polysaccharides and inhibits inflammatory mediators release.

Zughaier SM, Svoboda P, Pohl J, Stephens DS, Shafer WM.

PLoS One. 2010 Oct 26;5(10):e13627. doi: 10.1371/journal.pone.0013627.


Increase in pilus islet 2-encoded pili among Streptococcus pneumoniae isolates, Atlanta, Georgia, USA.

Zähner D, Gudlavalleti A, Stephens DS.

Emerg Infect Dis. 2010 Jun;16(6):955-62. doi: 10.3201/eid1606.091820.


Human antimicrobial peptide LL-37 induces MefE/Mel-mediated macrolide resistance in Streptococcus pneumoniae.

Zähner D, Zhou X, Chancey ST, Pohl J, Shafer WM, Stephens DS.

Antimicrob Agents Chemother. 2010 Aug;54(8):3516-9. doi: 10.1128/AAC.01756-09. Epub 2010 May 24.


Requirement of NMB0065 for connecting assembly and export of sialic acid capsular polysaccharides in Neisseria meningitidis.

Hobb RI, Tzeng YL, Choudhury BP, Carlson RW, Stephens DS.

Microbes Infect. 2010 Jun;12(6):476-87. doi: 10.1016/j.micinf.2010.02.009. Epub 2010 Mar 7.


Population structure and capsular switching of invasive Neisseria meningitidis isolates in the pre-meningococcal conjugate vaccine era--United States, 2000-2005.

Harrison LH, Shutt KA, Schmink SE, Marsh JW, Harcourt BH, Wang X, Whitney AM, Stephens DS, Cohn AA, Messonnier NE, Mayer LW.

J Infect Dis. 2010 Apr 15;201(8):1208-24. doi: 10.1086/651505.


Biology and pathogenesis of the evolutionarily successful, obligate human bacterium Neisseria meningitidis.

Stephens DS.

Vaccine. 2009 Jun 24;27 Suppl 2:B71-7. doi: 10.1016/j.vaccine.2009.04.070. Epub 2009 May 23. Review.


Phosphoethanolamine substitution of lipid A and resistance of Neisseria gonorrhoeae to cationic antimicrobial peptides and complement-mediated killing by normal human serum.

Lewis LA, Choudhury B, Balthazar JT, Martin LE, Ram S, Rice PA, Stephens DS, Carlson R, Shafer WM.

Infect Immun. 2009 Mar;77(3):1112-20. doi: 10.1128/IAI.01280-08. Epub 2008 Dec 29.


Modification of lipooligosaccharide with phosphoethanolamine by LptA in Neisseria meningitidis enhances meningococcal adhesion to human endothelial and epithelial cells.

Takahashi H, Carlson RW, Muszynski A, Choudhury B, Kim KS, Stephens DS, Watanabe H.

Infect Immun. 2008 Dec;76(12):5777-89. doi: 10.1128/IAI.00676-08. Epub 2008 Sep 29.


The structure of the L9 immunotype lipooligosaccharide from Neisseria meningitidis NMA Z2491.

Choudhury B, Kahler CM, Datta A, Stephens DS, Carlson RW.

Carbohydr Res. 2008 Nov 24;343(17):2971-9. doi: 10.1016/j.carres.2008.08.026. Epub 2008 Sep 2.


Paclitaxel binding to human and murine MD-2.

Zimmer SM, Liu J, Clayton JL, Stephens DS, Snyder JP.

J Biol Chem. 2008 Oct 10;283(41):27916-26. doi: 10.1074/jbc.M802826200. Epub 2008 Jul 23.

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