Medical Microbiology and Immunology (Master of Science)
Graduate School
CRISS I 520
Nancy Dohse Hanson, PhD
Professor
Medical Microbiology and Immunology
Examples of the most recent publications can be found at this PubMed link.
Research Focus
Our laboratory focuses on many aspects of antibiotic resistance and the pathogenesis of urinary tract infections caused by E. coli. Our research explores the molecular mechanisms of antibiotic resistance, both chromosomal and plasmid-mediated, in gram-negative pathogens such as Escherichia coli, Klebsiella pneumoniae, Salmonella spp., and Pseudomonas aeruginosa. Specifically, we are interested in the identification of selective pressures required for the emergence of resistance, the regulation of gene and protein expression involved in resistant phenotypes, and metabolic pathways required for both pathogenesis and antibiotic tolerance in Enterobacterales. In addition, we are interested in the development of diagnostic assays to detect not only the phenotype of organisms resistant to antibiotics but the mechanisms by which the organism becomes resistant.
Pharmacology and Therapeutics for Dentistry Tolman Justin A., Hanson Nancy D., 33 - Pharmacology of Specific Drug Groups: Antibiotic Therapy [Book Chapter] 2026
General
Maclean Alyssa K.W., Morrow Stacey, Abbas Anum, Vivekanandan Renuga, Cavalieri Stephen, Hanson Nancy D., Intrapatient transfer of an uncommon carbapenemase in Nebraska 2022
Hanson Nancy D., Resistance in Gram-negative Pathogens 2013
Munier G. K., Hanson N. D., Johnson C. L., Snyder J. W., Moland E. S., Thomson K. S., Positive extended-spectrum-β-lactamase (ESBL) screening results may be due to AmpC β-lactamases more often than to ESBLs 2010
Moland Ellen Smith, Seong Geun Hong, Thomson Kenneth S., Larone Davise H., Hanson Nancy D., Klebsiella pneumoniae isolate producing at least eight different β-lactamases, including AmpC and KPC β-lactamases [1] 2007
Hanson Nancy D., Hossain Ashfaque, Buck Larry, Moland Ellen Smith, Thomson Kenneth S., First occurrence of a Pseudomonas aeruginosa isolate in the United States producing an IMP metallo-β-lactamase, IMP-18 [3] 2006
Mortensen Joel E., Bernier Mavi, Gray Larry D., Dolan Sharon, Hanson Nancy D., Moland Ellen S., Abdalhamid Baha, New quality control strain for use in routine testing for production of extended-spectrum beta-lactamases by Enterobacteriaceae [1] 2005
Publications
Microbiology spectrum Sato Hiromu, Hiura Kaisei, Ishizawa Nao, Koto Ryo-ya, Ishii Yoshikazu, Saito Hiyori, Kato Yoshiki, Hanson Nancy D., Shimizu-Ibuka Akiko, Biochemical and structural analyses of metallo-β-lactamase VIM-28: impact of substitutions at residues 224 and 228 on substrate profile, stability, and zinc affinity, p. e0278825 2026
Journal of clinical microbiology Rhoads Daniel D., Hanson Nancy D., Reedy Kaley, Gafsi Johanne, Ying Yun X., Hardy Dwight J., First description of the performance of the VITEK MITUBE device used with MALDI-TOF mass spectrometry to achieve identification of gram-negative bacteria directly from positive blood culture broth, p. e0012225 2025
Microbiology spectrum Rudick Courtney P., Cox Rachel S., Bourret Travis J., Hanson Nancy D., In vitro assays for clinical isolates of sequence type 131 Escherichia coli do not recapitulate in vivo infectivity using a murine model of urinary tract infection, p. e0151124 2025
Antimicrobial agents and chemotherapy Hareza Dariusz A, Bergman Yehudit, Conzemius Rick, Jacobs Emily, Lu Jennifer, Hanson Nancy D, Tamma Pranita D, Cosgrove Sara E, Harris Anthony D, Simner Patricia J, Molecular epidemiology of β-lactamases in ceftriaxone-resistant Enterobacterales bloodstream infections in the mid-Atlantic United States, p. e0125824 2025
Microbiology spectrum Freed, Jr Shawn, Hanson Nancy D., AmpC induction by imipenem in Pseudomonas aeruginosa occurs in the absence of OprD and impacts imipenem/relebactam susceptibility, p. e0014224 2024
Microbiology resource announcements Maclean Alyssa K. W., Hanson Nancy D., Draft Genome Sequences of the Clinical Isolates Kp 23 and KPM 20 10:12 2021
Journal of Antimicrobial Chemotherapy Suelter Corey S., Hanson Nancy D., OmpC regulation differs between ST131 and non-ST131 Escherichia coli clinical isolates and involves differential expression of the small RNA MicC 75:5, p. 1151 - 1158 2020
Antimicrobial agents and chemotherapy Mack Andrew R., Haft Daniel H., Hujer Kristine M., Cabot Gabriel, Feldgarden Michael, Klimke William, Van Den Akker Focco, Vila Alejandro J., Bradford Patricia A., Smania Andrea, Haider Shozeb, Papp-Wallace Krisztina M., Rossolini Gian Maria, Docquier Jean Denis, Frère Jean Marie, Galleni Moreno, Poirel Laurent, Hanson Nancy D., Oliver Antonio, Plésiat Patrick, Nordmann Patrice, Palzkill Timothy G., Jacoby George A., Bush Karen, Bonomo Robert A., Barnes Melissa D., Taracila Magdalena A., Hujer Andrea M., A standard numbering scheme for class C β-lactamases 64:3 2020
Microbiology Resource Announcements Harrison Lucas B., Selmecki Anna, Hanson Nancy D., Draft genome assemblies of clinical isolates of klebsiella pneumoniae V9011662 and enterobacter hormaechei Entb306 8:15 2019
Genome Announcements Harrison Lucas B., Hanson Nancy D., Draft genome sequence of the mucoid Pseudomonas aeruginosa clinical isolate PA34 5:46 2017
Antimicrobial Agents and Chemotherapy Harrison Lucas, Hanson Nancy D., High Resolution Melting Analysis for the Rapid Detection of Sequence Type 131 Escherichia Coli 61:6 2017
Diagnostic Microbiology and Infectious Disease Bork Jacqueline T., Fowler Randal C., Heil Emily L., Leekha Surbhi, Hanson Nancy D., Majumdar Anjali, Johnson J. Kristie, Impact of CLSI and EUCAST Cefepime breakpoint changes on the susceptibility reporting for Enterobacteriaceae 2017
BioTechniques Connelly Christopher M., Torres María P., Lechner Joel, Porter Laura R., Morrow Stacey, Hanson Nancy D., Plasmid-mediated β-lactamases 61:5, p. 272 - 275 2016
Antimicrobial Agents and Chemotherapy Dixon Nyssa, Fowler R. C., Yoshizumi A., Horiyama T., Ishii Y., Harrison L., Geyer C. N., Moland E. S., Thomson K., Hanson Nancy D., IMP-27, a Unique Metallo-Beta-Lactamase Identified in Geographically Distinct Isolates of Proteus Mirabilis 60:10, p. 6418 - 6421 2016
The Journal of Antimicrobial Chemotherapy Geyer Chelsie N., Johnston B., Fowler Randal C., Johnson J. R., Weissman S. J., Hawkey P., Hanson Nancy D., Evaluation of CTX-M steady-state mRNA, mRNA half-life and protein production in various STs of Escherichia coli 71:3, p. 607 - 616 2016
Microbiologyopen Fowler Randal C., Hanson Nancy D., The OpdQ porin of Pseudomonas aeruginosa is regulated by environmental signals associated with cystic fibrosis including nitrate-induced regulation involving the NarXL two-component system 4:6, p. 967 - 982 2015
Journal of Clinical Microbiology Ledeboer N. A., Lopansri B. K., Butler-Wu S. M., Carroll K. C., Granato P., Thomson Kenneth S., Berger H., Samuel L., Pancholi P., Swyers L., Hanson Nancy D., Hansen G. T., Trank N. K., Polagek C. R., Winegarm R., Buchanan B. W., Cavagnolo R., Dhiman N., Identification of Gram-Negative Bacteria and Genetic Resistance Determinants from Positive Blood Culture Broths using the Verigene Gram-Negative Blood Culture Multiplex Microarray-Based Molecular Assay 53:8, p. 2460 - 2472 2015
Biotechniques Connelly C. M., Porter L. R., Lechner J. M., Hanson Nancy D., Morrow Stacey, Antibiotic Resistance Monitoring and Detection (Arm-d™) Pcr Kits: Arm-d™ for β-Lactamase Id – Technical Note: Detection of Esbls, Mbls, Kpcs, and Plasmid-Mediated Ampcs, using the β-Lactamase Id Kit to Identify Antibiotic Resistance in Gram-Negative Patho 57:6, p. 317 - 318 2014
Journal of Clinical Microbiology Geyer Chelsie N., Hanson Nancy D., Multiplex high-resolution melting analysis as a diagnostic tool for detection of plasmid-mediated AmpC ??-lactamase genes 52:4, p. 1262 - 1265 2014
PLoS One Fowler Randal C., Hanson Nancy D., Emergence of Carbapenem Resistance Due to the Novel Insertion Sequence ISPa8 in Pseudomonas aeruginosa 9:3, p. e91299 2014
Acta Crystallographica Section F: Structural Biology and Crystallization Communications Furuyama Takamitsu, Tateda Kazuhiro, Ishii Yoshikazu, Ohya Norimasa, Hanson Nancy D., Shimizu-Ibuka Akiko, Purification, crystallization and preliminary X-ray analysis of IMP-18, a class B carbapenemase from Pseudomonas aeruginosa 69:12, p. 1397 - 1400 2013
Journal of Antimicrobial Chemotherapy Roth Amanda L., Lister Philip D., Hanson Nancy D., Effect of drug treatment options on the mobility and expression of blaKPC 68:12, p. 2779 - 2785 2013
PLoS pathogens Hu Guoku, Huang Bing Q., Ward Honorine D., Zhu Guan, LaRusso Nicholas F., Hanson Nancy D., Chen Xian Ming, Roth Amanda L., Gong Ai Yu, Release of Luminal Exosomes Contributes to TLR4-Mediated Epithelial Antimicrobial Defense 9:4 2013
Journal of Clinical Microbiology Roth A. L., Hanson Nancy D., Rapid Detection and Statistical Differentiation of KPC Gene Variants in Gram-negative Pathogens Using High Resolution Melting and ScreenClust Analysis 51:1, p. 61 - 65 2013
Diagnostic Microbiology and Infectious Disease Geyer Chelsie N., Hanson Nancy D., Rapid PCR amplification protocols decrease the turn-around time for detection of antibiotic resistance genes in Gram-negative pathogens 77:2, p. 113 - 117 2013
Journal of clinical microbiology Geyer Chelsie N., Reisbig Mark D., Hanson Nancy D., Development of a TaqMan multiplex PCR assay for detection of plasmid-mediated AmpC β-lactamase genes 50:11, p. 3722 - 3725 2012
Antimicrobial agents and chemotherapy Johnson James R., Owens Rob, Palavecino Elizabeth, Vigil Karen, Weissman Scott J., Jorgensen James H., Lewis James S., Cleary Timothy, Hansen Glen, Edelstein Paul H., Robicsek Ari, Adachi Javier, Paterson David, Quinn John, Kuskowski Michael A., Hanson Nancy D., Johnston Brian D., Clabots Connie, Bergsbaken Robert L., Hooton Thomas M., Hulse Michelle, Lolans Karen, Urban Carl, Molecular epidemiological analysis of Escherichia coli sequence type ST131 (O25:H4) and bla CTX-M-15among extended-spectrum-β- lactamase-producing E. coli from the United States, 2000 to 2009 56:5, p. 2364 - 2370 2012
Epidemiology research international Robledo Iraida E., Thomson Kenneth S., Santé María I., Vázquez Guillermo J., Moland Ellen S., Aquino Edna E., Goering Richard V., Hanson Nancy D., Dissemination and Molecular Epidemiology of KPC-Producing Klebsiella pneumoniae Collected in Puerto Rico Medical Center Hospitals during a 1-Year Period 2011, p. 1 - 8 2011
Clinical Neurophysiology Powell D., Xia Rui-Ping, Hanson Nancy D., Threlkeld A. Joseph, Fang X., Enhancement of parkinsonian rigidity with contralateral hand activation 122:8, p. 1595 - 1601 2011
Antimicrobial agents and chemotherapy Borgianni Luisa, Prandi Silvia, Salden Laurie, Santella Gisela, Hanson Nancy D., Rossolini Gian Maria, Docquier Jean Denis, Genetic context and biochemical characterization of the IMP-18 metallo-β-lactamase identified in a Pseudomonas aeruginosa isolate from the United States 55:1, p. 140 - 145 2011
Experimental Brain Research Xia Rui-Ping, Hanson Nancy D., Fang X., Threlkeld A. Joseph, Rymer W. Z., Powell D., Differentiation between the contributions of shortening reaction and stretch-induced inhibition to rigidity in Parkinson's disease 209:4, p. 609 - 618 2011
Microbe Hanson Nancy D., Molecular diagnostics could help in coping with hidden β-lactamases 5:8, p. 333 - 339 2010
BMC Infectious Diseases Khalaf Noha G., Eletreby Mona M., Hanson Nancy D., Characterization of CTX-M ESBLs in Enterobacter cloacae, Escherichia coli and Klebsiella pneumoniae clinical isolates from Cairo, Egypt 9 2009
Antimicrobial Agents and Chemotherapy Wolter Daniel J., Khalaf Noha, Robledo Iraida E., Vazquez Guillermo J., Sante Maria I., Aquino Edna E., Goering Richard V., Hanson Nancy D., Surveillance of Carbapenem-Resistant Pseudomonas aeruginosa Isolates from Puerto Rican Medical Center Hospitals: Dissemination of KPC and IMP-18 beta-Lactamases 53:4, p. 1660 - 1664 2009
Antimicrobial agents and chemotherapy Wolter Daniel J., Hanson Nancy D., Palepou Marie France I., Kurpiel Philip M., Woodford Neil, Goering Richard V., Phenotypic and enzymatic comparative analysis of the novel KPC variant KPC-5 and its evolutionary variants, KPC-2 and KPC-4 53:2, p. 557 - 562 2009
Antimicrobial Agents and Chemotherapy Schmidtke Amber J., Hanson Nancy D., Role of ampD Homologs in Overproduction of AmpC in Clinical Isolates of Pseudomonas aeruginosa 52:11, p. 3922 - 3927 2008
Clinical Infectious Diseases Wolter Daniel J., Goering Richard V., Sammut P., Khalaf N., Hanson Nancy D., Acquazzino D., Emergence of Carbapenem Resistance in Pseudomonas aeruginosa Isolates from a Patient with Cystic Fibrosis in the Absence of Carbapenem Therapy 46:12, p. e137 - e141 2008
Antimicrobial agents and chemotherapy Wolter Daniel J., Schmidtke Amber J., Hanson Nancy D., Lister Philip D., Increased expression of ampC in Pseudomonas aeruginosa mutants selected with ciprofloxacin 51:8, p. 2997 - 3000 2007
Diagnostic Microbiology and Infectious Disease Netzel Tisha C., Jindani Irfan, Hanson Nancy, Turner Bradley M., Smith L., Rand Kenneth H., The AmpC inhibitor, Syn2190, can be used to reveal extended-spectrum β-lactamases in Escherichia coli 58:3, p. 345 - 348 2007
Journal of Antimicrobial Chemotherapy Wickman P. A., Thomson Kenneth S., Black J. A., Smith Moland E., Hanson Nancy D., In vitro development of resistance to DX-619 and other quinolones in enterococci 58:6, p. 1268 - 1273 2006
Antimicrobial Agents and Chemotherapy Schmidtke A. J., Hanson Nancy D., Model system to evaluate the effect of ampD mutations on AmpC-mediated beta-lactam resistance 50:6, p. 2030 - 2037 2006
Antimicrobial Agents and Chemotherapy Wolter D. J., Hanson Nancy D., Lister Philip D., AmpC and OprD are not involved in the mechanism of imipenem hypersusceptibility among Pseudomonas aeruginosa isolates overexpressing the mexCD-oprJ efflux pump 49:11, p. 4763 - 4766 2005
Journal of Clinical Microbiology Song W., Hanson Nancy D., Lewis J. S., Jorgensen J. H., Thomson Kenneth S., Moland E. S., Failure of cefepime therapy in treatment of Klebsiella pneumoniae bacteremia 43:9, p. 4891 - 4894 2005
Clinical infectious diseases : an official publication of the Infectious Diseases Society of America Hong Tao, Moland Ellen Smith, Abdalhamid Baha, Hanson Nancy D., Wang Jie, Sloan Cindy, Fabian Diane, Farajallah Awny, Levine Jerome, Thomson Kenneth S., Escherichia coli 40:10, p. e84 - 86 2005
Journal of clinical microbiology Pitout Johann D.D., Hossain Ashfaque, Hanson Nancy D., Phenotypic and molecular detection of CTX-M-β-lactamases produced by Escherichia coli and Klebsiella spp. 42:12, p. 5715 - 5721 2004
Antimicrobial Agents and Chemotherapy Reisbig Mark D., Hanson Nancy D., Promoter sequences necessary for high-level expression of the plasmid-associated ampC beta-lactamase gene bla(MIR-1) 48:11, p. 4177 - 4182 2004
Antimicrobial Agents and Chemotherapy Abdalhamid Baha, Pitout J. D. D., Moland Ellen Smith, Hanson Nancy D., Community-onset disease caused by Citrobacter freundii producing a novel CTX-M beta-lactamase, CTX-M-30, in Canada 48:11, p. 4435 - 4437 2004
Journal of clinical microbiology Liebana Ernesto, Martinez-Urtaza Jaime, Briñas Laura, Batchelor Miranda, Torres Carmen, Lagos Luis A., Abdalhamid Baha, Hanson Nancy D., Pediatric infection due to multiresistant Salmonella enterica serotype infantis in Honduras 42:10, p. 4885 - 4888 2004
FEMS Microbiology Letters Wolter Daniel J., Lister Philip D., Hanson Nancy D., Insertional inactivation of oprD in clinical isolates of Pseudomonas aeruginosa leading to carbapenem resistance 236:1, p. 137 - 143 2004
Clinical Infectious Diseases Pitout Johann D.D., Church Deirdre L., Laupland Kevin B., Hanson Nancy D., Population-based laboratory surveillance for Escherichia coli-producing extended-spectrum β-Lactamases 38:12, p. 1736 - 1741 2004
Journal of Antimicrobial Chemotherapy Hossain Ashfaque, Reisbig Mark D., Hanson Nancy D., Plasmid-encoded functions compensate for the biological cost of AmpC overexpression in a clinical isolate of Salmonella typhimurium 53:6, p. 964 - 970 2004
Journal of clinical microbiology Pitout Johann D.D., Reisbig Mark D., Crowe Larry, Mulvey Mike, Chui Linda, Louie Marie, Church Deirdre L., Elsayed Sameer, Gregson Dan, Ahmed Rafiq, Tilley Peter, Hanson Nancy D., Association between handling of pet treats and infection with Salmonella enterica serotype Newport expressing the AmpC β-lactamase, CMY-2 41:10, p. 4578 - 4582 2003
Journal of clinical microbiology Pitout J. D.D., Venter E. C., Church D. L., Hanson N. D., Reisbig M. D., Modification of the double-disk test for detection of Enterobacteriaceae producing extended-spectrum and AmpC β-lactamases 41:8, p. 3933 - 3935 2003
Journal of Antimicrobial Chemotherapy Hanson Nancy D., AmpC β-lactamases 52:1, p. 2 - 4 2003
Journal of Antimicrobial Chemotherapy Reisbig Mark D., Hossain Ashfaque, Hanson Nancy D., Factors influencing gene expression and resistance for Gram-negative organisms expressing plasmid-encoded ampC genes of Enterobacter origin 51:5, p. 1141 - 1151 2003
Journal of Antimicrobial Chemotherapy Mahlen Steven D., Morrow Stacey S., Abdalhamid Baha, Hanson Nancy D., Analyses of ampC gene expression in Serratia marcescens reveal new regulatory properties 51:4, p. 791 - 802 2003
Antimicrobial agents and chemotherapy Moland Ellen Smith, Hanson Nancy D., Thomson Kenneth S., Black Jennifer A., Ourada Jason, Reisbig Mark D., Occurrence of newer β-lactamases in Klebsiella pneumoniae isolates from 24 U.S. Hospitals 46:12, p. 3837 - 3842 2002
Journal of Antimicrobial Chemotherapy Hanson Nancy D., Gosbell Iain B., Thomson Kenneth S., Moland Ellen S., Hossain Ashfaque, Neville Stephen A., Unusual Salmonella enterica serotype Typhimurium isolate producing CMY-7, SHV-9 and OXA-30 β-lactamases 49:6, p. 1011 - 1014 2002
ChemInform Hanson N. D., Sanders C. C., ChemInform Abstract: Regulation of Inducible AmpC β-Lactamase Expression Among Enterobacteriaceae 31:6, p. no - no 2000
Antimicrobial agents and chemotherapy Pitout J. D.D., Thomson K. S., Hanson N. D., Ehrhardt A. F., Sanders C. C., Moland E. S., β-lactamases responsible for resistance to expanded-spectrum cephalosporins in Klebsiella pneumoniae, Escherichia colt, and Proteus mirabills isolates recovered in South Africa 42:6, p. 1350 - 1354 1998
Virus Research Hanson Nancy, Henderson Gail, Jones Clinton, The herpes simplex virus type 2 gene which encodes the large subunit of ribonucleotide reductase has unusual regulatory properties 34:3, p. 265 - 280 1994
Virology Bratanich Ana C., Hanson Nancy D., Jones Clinton J., The latency-related gene of bovine herpesvirus 1 inhibits the activity of immediate-early transcription unit 1 191:2, p. 988 - 991 1992
Journal of Virology Hanson N. D., Rhode S. L., Parvovirus NS1 stimulates P4 expression by interaction with the terminal repeats and through DNA amplification 65:8, p. 4325 - 4333 1991