10 results
Pathophysiology of Hypocomplementemic Urticarial Vasculitis

C1q/anti-C1q antibiody ->
Immune Complex Formation - Complement Pathway Activation (C3a and C5a)
Pathophysiology ... of Hypocomplementemic ... Complex Formation - Complement ... TerrierBen #Hypocomplementemic ... Vasculitis #HUV #Pathophysiology
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
Hypersensitivity ... antigen, leading to complement ... Complement activation ... #Types #Classification ... #Pathophysiology
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
table of types of hypersensitivity ... antigens, leading to complement ... they activate complement ... Graft rejection #hypersensitivity ... allergy #table #classification
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
three primary pathophysiologic ... staining): • Low Complement ... Idiopathic • Normal Complement ... differential #diagnosis #algorithm
Type II Hypersensitivity: Pathogenesis and clinical findings
Definition: When antigens bind to the body's cell surfaces, forming
Type II Hypersensitivity ... activates the complement ... Allergy #Immunology #pathophysiology
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... #rheumatology #classification
Lymphomas and Lymphoproliferative Disorders - Differential Diagnosis Algorithm
Hodgkin Lymphoma ~40% - Characteristic For Reed-Sternberg (RS) Cells
Differential Diagnosis Algorithm ... Lymphoproliferative #Disorders #Classification ... #pathophysiology ... #differential #algorithm
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
• Low serum C4 complement ... vasculitis • Hypersensitivity ... diagnosis #types #classification
IGG-4 RELATED DISEASE

WHAT?
 • A chronic, immune-mediated fibroinflammatory disease with tumefactive infiltration of IgG4+ plasma cells
dysfunction PATHOPHYSIOLOGY ... - ↑ IgE, ↓ complement ... • Classification
Functional GI Disorders in IBD - IBD Algorithm

Background:
 • 25-40% of IBD in remission have IBS
Disorders in IBD - IBD Algorithm ... narcotic use FGID Pathphysiology ... microbiome • Visceral hypersensitivity ... IBDAlgorithm #IBD #Algorithm