Abstract

Project 3 - Antibiotic resistance and metabolic pathways in Chlamydia spp This project will focus on key biosynthetic and metabolic functions of Chlamydia as they impact on drug resistance and growth and survival in the host. It consists of three aims:
Specific Aim 1 - To model the emergence of resistance to the drugs of choice for the treatment of C. trachomatis infections. We will measure the fitness of azithromycin resistant (AZM*^) mutants in vitro and in vivo. We will then screen for compensatory mutants that arise in vivo and characterize these mutants using whole genome sequencing technology. We will also select for spontaneous tetracycline resistant (Tc*^) mutants of C. caviae (GPIC) in a natural infection model in guinea pigs. The mutants that arise in the natural infection setting will be analyzed for growth characteristics such as growth in tissue culture and competition experiments in vivo and in vitro in the absence of antibiotic. A complement to the animal model studies will be a survey for drug resistant Isolates the clinical setting among

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of Allergy and Infectious Diseases (NIAID)
Type
Research Program--Cooperative Agreements (U19)
Project #
5U19AI084044-05
Application #
8527686
Study Section
Special Emphasis Panel (ZAI1-MMT-M)
Project Start
Project End
Budget Start
2013-09-01
Budget End
2014-08-31
Support Year
5
Fiscal Year
2013
Total Cost
$392,465
Indirect Cost
$88,326

  Institution

Name
University of Maryland Baltimore
Department
Type
DUNS #
188435911
City
Baltimore
State
MD
Country
United States
Zip Code
21201

  Publications

Ragland, Stephanie A; Humbert, Mar?a V; Christodoulides, Myron et al. (2018) Neisseria gonorrhoeae employs two protein inhibitors to evade killing by human lysozyme. PLoS Pathog 14:e1007080
van Houdt, Robin; Ma, Bing; Bruisten, Sylvia M et al. (2018) Lactobacillus iners-dominated vaginal microbiota is associated with increased susceptibility to Chlamydia trachomatis infection in Dutch women: a case-control study. Sex Transm Infect 94:117-123
Cornejo, Omar E; Hickey, Roxana J; Suzuki, Haruo et al. (2018) Focusing the diversity of Gardnerella vaginalis through the lens of ecotypes. Evol Appl 11:312-324
Tyssen, David; Wang, Ying-Ying; Hayward, Joshua A et al. (2018) Anti-HIV-1 Activity of Lactic Acid in Human Cervicovaginal Fluid. mSphere 3:
Tachedjian, Gilda; O'Hanlon, Deirdre E; Ravel, Jacques (2018) The implausible ""in vivo"" role of hydrogen peroxide as an antimicrobial factor produced by vaginal microbiota. Microbiome 6:29
Noyes, Noelle; Cho, Kyu-Chul; Ravel, Jacques et al. (2018) Associations between sexual habits, menstrual hygiene practices, demographics and the vaginal microbiome as revealed by Bayesian network analysis. PLoS One 13:e0191625
Wang, Liuyang; Pittman, Kelly J; Barker, Jeffrey R et al. (2018) An Atlas of Genetic Variation Linking Pathogen-Induced Cellular Traits to Human Disease. Cell Host Microbe 24:308-323.e6
Palmer, Allison; Criss, Alison K (2018) Gonococcal Defenses against Antimicrobial Activities of Neutrophils. Trends Microbiol 26:1022-1034
Schroeder, Holly A; Nunn, Kenetta L; Schaefer, Alison et al. (2018) Herpes simplex virus-binding IgG traps HSV in human cervicovaginal mucus across the menstrual cycle and diverse vaginal microbial composition. Mucosal Immunol 11:1477-1486
Oehlers, Stefan H; Flores, Maria Vega; Hall, Christopher J et al. (2017) A whole animal chemical screen approach to identify modifiers of intestinal neutrophilic inflammation. FEBS J 284:402-413

Showing the most recent 10 out of 54 publications