Abstract

H. ducreyi makes a secreted cytolethal distending toxin that causes cytopathic effect on cultured human keratinocytes and fibroblasts. We identified the gene cluster responsible for production and secretion of cytolethal distending toxin, designated cdtABC, and constructed an isogenic H. ducreyi mutant in the structural cdtC gene. The mutant lacks cytolethal distending toxin activity. The purpose of this study is to test the hypothesis that cytolethal distending toxin mutant is impaired in its ability to infect human skin when compared to its isogenic parent. To test this hypothesis, we will compare the ability of the parent and the mutant to cause experimental infection in human subjects. These studies will conclusively establish whether cytoletal distending toxin plays a role in the ability of H. ducreyi to cause pustules.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Center for Research Resources (NCRR)
Type
General Clinical Research Centers Program (M01)
Project #
2M01RR000750-28
Application #
6411766
Study Section
National Center for Research Resources Initial Review Group (RIRG)
Project Start
1976-12-01
Project End
2004-11-30
Budget Start
Budget End
Support Year
28
Fiscal Year
2000
Total Cost
Indirect Cost

  Institution

Name
Indiana University-Purdue University at Indianapolis
Department
Type
DUNS #
005436803
City
Indianapolis
State
IN
Country
United States
Zip Code
46202

  Publications

Robinson-Cohen, Cassianne; Bartz, Traci M; Lai, Dongbing et al. (2018) Genetic Variants Associated with Circulating Fibroblast Growth Factor 23. J Am Soc Nephrol 29:2583-2592
Askie, Lisa M; Darlow, Brian A; Finer, Neil et al. (2018) Association Between Oxygen Saturation Targeting and Death or Disability in Extremely Preterm Infants in the Neonatal Oxygenation Prospective Meta-analysis Collaboration. JAMA 319:2190-2201
Srinivasan, Lakshmi; Page, Grier; Kirpalani, Haresh et al. (2017) Genome-wide association study of sepsis in extremely premature infants. Arch Dis Child Fetal Neonatal Ed 102:F439-F445
Gupta, Samir K; Yeh, Eunice; Kitch, Douglas W et al. (2017) Bone mineral density reductions after tenofovir disoproxil fumarate initiation and changes in phosphaturia: a secondary analysis of ACTG A5224s. J Antimicrob Chemother 72:2042-2048
Robarge, Jason D; Desta, Zereunesay; Nguyen, Anne T et al. (2017) Effects of exemestane and letrozole therapy on plasma concentrations of estrogens in a randomized trial of postmenopausal women with breast cancer. Breast Cancer Res Treat 161:453-461
Hertz, Daniel L; Speth, Kelly A; Kidwell, Kelley M et al. (2017) Variable aromatase inhibitor plasma concentrations do not correlate with circulating estrogen concentrations in post-menopausal breast cancer patients. Breast Cancer Res Treat 165:659-668
Patel, Yash R; Kirkman, M Sue; Considine, Robert V et al. (2017) Retinopathy predicts progression of fasting plasma glucose: An Early Diabetes Intervention Program (EDIP) analysis. J Diabetes Complications 31:605-610
Robarge, Jason D; Metzger, Ingrid F; Lu, Jessica et al. (2017) Population Pharmacokinetic Modeling To Estimate the Contributions of Genetic and Nongenetic Factors to Efavirenz Disposition. Antimicrob Agents Chemother 61:
Hertz, D L; Kidwell, K M; Seewald, N J et al. (2017) Polymorphisms in drug-metabolizing enzymes and steady-state exemestane concentration in postmenopausal patients with breast cancer. Pharmacogenomics J 17:521-527
Kadakia, Kunal C; Kidwell, Kelley M; Seewald, Nicholas J et al. (2017) Prospective assessment of patient-reported outcomes and estradiol and drug concentrations in patients experiencing toxicity from adjuvant aromatase inhibitors. Breast Cancer Res Treat 164:411-419

Showing the most recent 10 out of 767 publications