MycoBiomDB – Record Details (MyCo_1497)

Biomarker Record Details

Database ID: MyCo_1497
DB IDMyCo_1497
TitleAbsence of CD4+ T cells impairs host defence of mice infected with Fonsecaea pedrosoi
Year2006
PMID17083615
Fungal Diseases involvedChromoblastomycosis
Associated Medical ConditionNone
GenusFonsecaea
Speciespedrosoi
OrganismFonsecaea pedrosoi
Ethical StatementNone
Site of InfectionNone
Opportunistic invasiveNone
Sample typeBiopsy
Sample sourceExtracted cell supernatant
Host GroupAnimal
Host Common nameMice
Host Scientific nameMus musculus
Biomarker NameDTH
Biomarker Full NameDelayed-type hypersensitivity
Biomarker TypeDiagnostic
BiomoleculeProtein
Geographical LocationBrazil
CohortFemale C57BL/6 CD4 and CD8-deficients and CD4 and CD8-sufficient mice ranging from 8 to 12 weeks old were purchased at the Isogenic Breeding Unit of the Department of Immunology, Biomedical Sci- ence Institute, University of Sa ˜o Paulo.
Cohort No.None
Age GroupNone
P ValueNone
SensitivityNone
SpecificityNone
Positive Predictive ValueNone
MICNone
Fold ChangeNone
PathwayNone
Disease Introduction MechanismChromoblastomycosis is a human chronic subcutaneous infection, beginning after inoculation trauma, caused by several dematiaceous fungi. These fungi are found in the soil and in decomposing plant matter. It occurs world- wide, but is more frequently observed in tropical countries such as Brazil. This mycosis is caused by several species of dematiaceus hyphomycetes: Fonsecaea pedrosoi, Phialophora verrucosa, Cladophialophora carrionni, and Rinocladiella aquaspersa. Clinically, chromoblasto- mycosis is characterized by the slow development of polymorphic skin lesions (nodules, verrucas, plaques and scar tissue). Inside the host, infectious propagules adhere to epithelial cells and differentiate into sclerotic forms, which effectively resist destruction by host effector cells and allow the establishment of chronic disease. The disease is usually insidious and the lesions increase slowly but progressively, not responding to the usual treatments and quite often reappearing.
TechniqueAssay
Analysis MethodDTH footpad assay
ELISA kitsELISA Kit (Becton Dickinson, Mountain View, CA, USA)
Assay DataNone
Validation Techniques usedELISA, DTH footpad assay
Up Regulation Down RegulationDecrease
Sequence DataNone
External LinkNone