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Comprehensive pathogenesis of IgA Nephropathy (i.e Berger’s Disease). 

IgA Nephropathy is the most common cause of
common cause of Glomerulonephritis ... Relationship of complement ... AcuteGlomerulonephritis #Glomerulonephritis ... BergersDisease #clinical
Cryoglobulinemia Summary

Cryoglobulins:
 • Cryoglobulins are Igs in the serum that precipitate in vitro at temperatures below
Skin ulcers - Glomerulonephritis ... Syndrome: • Clinical ... • Low serum C4 complement
Rapidly Progressive Glomerulonephritis (RPGN)
RPGN has three primary pathophysiologic causes differentiated by immunofluorescence

Immune Complex Mediated (granular staining):
Rapidly Progressive Glomerulonephritis ... staining): • Low Complement ... Idiopathic • Normal Complement ... Kidney: Anti-GBM Glomerulonephritis ... #Progressive #Glomerulonephritis
Membranoproliferative Glomerulonephritis (MPGN) AKA: Mesangiocapillary GN
 • Active Urine Sediment (dysmorphic RBC, RBC casts, +/- proteinuria)
Membranoproliferative Glomerulonephritis ... staining (lg + complement ... MGPN • Complement ... of alternative complement ... Membranoproliferative #Glomerulonephritis
Causes of Hypocomplementemia - CHAMPS Mnemonic
C - Cryoglobulinemia (85%), C3 glomerulopathy, cirrhosis
H - Heavy Chain deposition
Membranoproliferative glomerulonephritis ... Post/pauci immune glomerulonephritis ... Hypocomplementemia #Low #Complement
Pulmonary Renal Syndromes and Mimics - Differential Diagnosis Framework
Diffuse alveolar hemorrhage + rapidly progressive glomerulonephritis
90%:
 -
rapidly progressive glomerulonephritis ... anti-GBM) 10%: - Low Complement ... Vasculitis - Normal Complement
Glomerular Diseases - Nephritic and Nephrotic Syndromes

Nephritic syndrome:
 - Acute poststreptococcal 
glomerulonephritis 
 - Rapidly progressive
poststreptococcal glomerulonephritis ... Rapidly progressive glomerulonephritis ... proliferative glomerulonephritis ... Membranoproliferative glomerulonephritis
Complement Pathways
- Classical Pathway
- Lectin Pathway
- Alternative Pathway

#Complement #Pathway #hematology #pathophysiology
Complement Pathways ... Alternative Pathway #Complement
Spectrum of Glomerulonephritis 
Pathology - Common Diseases - Typical Presentation 

By Dr. John Roberts @John_K_Roberts

#Glomerulonephritis #Spectrum
Spectrum of Glomerulonephritis ... John_K_Roberts #Glomerulonephritis
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
antigen, leading to complement ... Complement activation ... Post-streptococcal glomerulonephritis