2015
Superantigen-Producing Staphylococcus aureus Elicits Systemic Immune Activation in a Murine Wound Colonization Model
Kim C, Karau M, Greenwood-Quaintance K, Tilahun A, Krogman A, David C, Pritt B, Patel R, Rajagopalan G. Superantigen-Producing Staphylococcus aureus Elicits Systemic Immune Activation in a Murine Wound Colonization Model. Toxins 2015, 7: 5308-5319. PMID: 26670252, PMCID: PMC4690136, DOI: 10.3390/toxins7124886.Peer-Reviewed Original ResearchConceptsSystemic immune activationImmune activationT cellsS. aureusSerum IL-17 levelsSystemic immunologic effectsIL-17 levelsSpleens of miceWound infection modelImmunologic effectsInflammatory changesHLA-DR3Wound infectionCommon causeTransgenic miceUninfected woundsDay 8Immune systemClinical implicationsInfection modelMiceSkin woundsWoundsMicrobial challengeStaphylococcus aureusSuperantigens produced by catheter-associated Staphylococcus aureus elicit systemic inflammatory disease in the absence of bacteremia
Chung J, Greenwood-Quaintance K, Karau MJ, Tilahun A, Khaleghi SR, Chowdhary VR, David CS, Patel R, Rajagopalan G. Superantigens produced by catheter-associated Staphylococcus aureus elicit systemic inflammatory disease in the absence of bacteremia. Journal Of Leukocyte Biology 2015, 98: 271-281. PMID: 25979434, PMCID: PMC4501677, DOI: 10.1189/jlb.4a1214-577rr.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCatheter-Related InfectionsCatheters, IndwellingCD4-Positive T-LymphocytesEnterotoxinsGene DeletionHistocompatibility AntigensHumansKidneyLiverLungLymphocyte ActivationMiceMice, TransgenicReceptors, Antigen, T-Cell, alpha-betaSpleenStaphylococcal InfectionsStaphylococcus aureusSuperantigensConceptsS. aureusHLA-DR3 transgenic miceLong intravenous catheterSystemic immune activationSerum cytokine levelsSystemic inflammatory diseaseAbsence of bacteremiaMHC class II moleculesInvasive staphylococcal diseaseToxigenic S. aureusClinical S. aureus isolatesS. aureus isolatesClass II moleculesIsogenic S. aureusCytokine levelsHLA-DR3Immune activationInflammatory diseasesIntravenous cathetersStaphylococcal diseaseRole of SAgsDevice-associated infectionsT cellsClinical consequencesForeign body
2011
Human Leukocyte Antigen Class II Transgenic Mouse Model Unmasks the Significant Extrahepatic Pathology in Toxic Shock Syndrome
Tilahun A, Marietta E, Wu T, Patel R, David C, Rajagopalan G. Human Leukocyte Antigen Class II Transgenic Mouse Model Unmasks the Significant Extrahepatic Pathology in Toxic Shock Syndrome. American Journal Of Pathology 2011, 178: 2760-2773. PMID: 21641398, PMCID: PMC3124354, DOI: 10.1016/j.ajpath.2011.02.033.Peer-Reviewed Original ResearchConceptsToxic shock syndromeShock syndromeTransgenic miceSmall intestineHLA-DR3 transgenic miceHLA class II moleculesMultiple organ inflammationPotent T cell activatorsKey pathogenic eventClass II moleculesT cell activatorsGut dysfunctionKawasaki diseaseLiver failureHeavy infiltrationHigh morbidityD-GalN.Pathologic changesT lymphocytesExtrahepatic pathologyPathogenic eventsAbsorptive functionD-galactosamineSensitization modelMouse strains
2010
Detrimental Effect of the Proteasome Inhibitor, Bortezomib in Bacterial Superantigen- and Lipopolysaccharide-induced Systemic Inflammation
Tilahun A, Theuer J, Patel R, David C, Rajagopalan G. Detrimental Effect of the Proteasome Inhibitor, Bortezomib in Bacterial Superantigen- and Lipopolysaccharide-induced Systemic Inflammation. Molecular Therapy 2010, 18: 1143-1154. PMID: 20372109, PMCID: PMC2889741, DOI: 10.1038/mt.2010.53.Peer-Reviewed Original ResearchConceptsToxic shock syndromeStaphylococcal enterotoxin BNF-kappaB activationSystemic inflammationSerum levelsBacterial superantigensKappaB activationElevated TNF-alpha levelsTNF-alpha levelsAcute liver failureProteasome inhibitorsSevere systemic inflammationNuclear factor-kappaBSerum biochemical parametersTNF-alpha-induced cell deathSerum TNFLiver failureHistopathological findingsUntreated miceShock syndromeProphylactic useMurine modelImportant cytokineBortezomibFactor-kappaB
2006
Acute systemic immune activation following vaginal exposure to staphylococcal enterotoxin B—Implications for menstrual shock
Rajagopalan G, Smart M, Murali N, Patel R, David C. Acute systemic immune activation following vaginal exposure to staphylococcal enterotoxin B—Implications for menstrual shock. Journal Of Reproductive Immunology 2006, 73: 51-59. PMID: 17070600, DOI: 10.1016/j.jri.2006.06.007.Peer-Reviewed Original ResearchConceptsMenstrual toxic shock syndromeSystemic immune activationHLA class II transgenic miceStaphylococcal enterotoxin BII transgenic miceImmune activationToxic shock syndromeSuperantigenic exotoxinsShock syndromeVaginal administrationTransgenic miceAcute systemic inflammatory diseaseSystemic inflammatory diseaseToxic shock syndrome toxinPeripheral lymphoid organsSEB-reactiveVaginal exposureProinflammatory cytokinesConjunctival routeLeukocytic infiltrationProfound elevationInflammatory diseasesLymphoid organsStaphylococcal superantigensT cells