11 results
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
antigen, leading to complement ... Type Ill - IgG and ... Complement activation ... #Classification ... #Pathophysiology
IGG-4 RELATED DISEASE

WHAT?
 • A chronic, immune-mediated fibroinflammatory disease with tumefactive infiltration of IgG4+ plasma cells
dysfunction PATHOPHYSIOLOGY ... inflammation -> progressive ... • Pancreas: Type ... - ↑ IgE, ↓ complement ... • Classification
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Rapidly Progressive ... three primary pathophysiologic ... staining): • Low Complement ... RPGN #Rapidly #Progressive ... differential #diagnosis #algorithm
Summary table of types of hypersensitivity reactions. 
Type 1
 - Mediators: lgE
 - Antigen Form: Soluble
- Mediators: IgG ... Mechanism of Action: IgG ... antigens, leading to complement ... they activate complement ... allergy #table #classification
Type II Hypersensitivity: Pathogenesis and clinical findings
Definition: When antigens bind to the body's cell surfaces, forming
Type II Hypersensitivity ... autoimmune antibodies (IgG ... activates the complement ... cell surfaces #Type2 ... Allergy #Immunology #pathophysiology
Subtypes of Serum Proteins

Pre-albumin (Transthyretin)
Albumin
Globulins
 • Alpha-1: Alpha-1 antitrypsin, Serum amyloid A, Ceruloplasmin, Corticosteroid-binding globulin (Transcortin),
• Gamma: IgM, IgG ... Proteins #Subtypes #algorithm ... #classification ... #Types #hematology
Lymphomas and Lymphoproliferative Disorders - Differential Diagnosis Algorithm
Hodgkin Lymphoma ~40% - Characteristic For Reed-Sternberg (RS) Cells
Differential Diagnosis Algorithm ... system (node) with progression ... Lymphoproliferative #Disorders #Classification ... #pathophysiology ... #differential #algorithm
Vasculitis and Vasculitides - Differential Diagnosis Framework

When to Consider Vasculitis:
 • Purpura, ischemic skin lesions
 •
proteinuria, rapidly progressing ... often involved • Hypocomplementemic ... Urticaria and hypocomplementemia ... against MPO • Complement ... #rheumatology #classification
Hepatorenal Syndrome (HRS)

Definition:
• Functional, potentially reversible kidney impairment.
• Occurs in advanced liver disease: cirrhosis, severe alcoholic
Pathophysiology: ... Classification: ... HRS-AKI (formerly Type ... 1): • Rapid progression ... HRS-Non-AKI (formerly Type
Monoclonal Gammopathy of Renal Significance (MGRS)

MGRS
• MGRS refers to kidney disease caused by nephrotoxic monoclonal immunoglobulins
guide subtype classification ... tubulopathy) - Complement ... vasculitis Types ... function and prevent progression