Block 1 Flashcards
(311 cards)
What is a morphological diagnosis?
Describes the affected structure, process, distribution, severity, time course. Long names
What is the etiological diagnosis?
Diagnosis that names causative agent
What is the disease diagnosis?
States name of disease
What is a lesion localized to a single area
Focal
What is a lesion in multiple areas on the same tissue/organ?
Multifocal
What is a lesion in multiple areas with overlapping regions?
Multifocal to coalescing
What is a lesion fulling spread throughout a tissue/organ?
Diffuse
What is a lesion localized to one portion of an organ/tissue?
Locally extensive
What are the 4 categories of duration?
Acute
Subacute
Chronic
Chronic-active
What is the last part of a word that means inflammation?
“-itis”
What does purulent mean?
Puss
What are the two anti-inflammatory and immunosuppressive cytokines?
IL-10 and TGF-B
What is the subset CD4 T cells that help suppress the immune response via physical contact?
T regs
What do T regs express on their cell surface?
CD4+ and CD25+
What transcription factor do T regs express?
FOXP3
What are the macrophages that suppress inflammation?
M2 macrophages
What cytokines do M2 macrophages release to suppress inflammation?
IL-10 and TGF-B
What does PD-1 do on T cells?
PD-1 is a cell surface suppressor which shuts down T cell activation
What does cancer do to PD-1 on T cells?
PD-1 (programmed cell death) is upregulated which shuts down most all T cell activation therefore stopping the activation of the suppressive cells (stopping the cells that kill the cancerous cells)
What is tolerance in immunilogical terms?
Tolerance is when the immune system fails to mount an immune response toward a specific antigen
What does a failure of self-tolerance lead to?
Auto-immune disease
What are the 2 mechanisms of tolerance in the immune system?
Central tolerance and peripheral tolerance
What is a cryptic antigen?
Self-antigens that are revealed secondary to inflammation
What are the 3 ways that peripheral tolerance addresses auto reactive imune cells?
Peripheral deletion
Anergy
Regulatory T cells