Glomerulonephritis Flashcards
What are the functions of the kidney?
Waste excretion Water balance Salt balance Acid base control Endocrine functions
What are the components of the glomerular filtration barrier?
Endothelial cell
Glomerular basement membrane
Podocytes
Describe the endothelial cells in the glomerular filtration barrier?
Fenestrated
Bulnerable to immune mediated attack
What are the components of the glomerular basement membrane?
Type IV collagen
Laminin
Mesangial cells
What are mesangial cells?
Glomerular structural support
Embedded in glomerular basement membrabe
Regulate blood flow of glomerular capillaries
Describe podocites in the glomerular filtration barrier?
Proteins containing slit diaphragms
What is glomerulopathy?
Proteinuria and haematuris in varying amounts
What does increasing proteinuria suggest?
Nephrotic
What does increasing haematuria suggest?
Nephritic
What is the presentation of nephrotic syndrome?
Well, normally 2-5 year olds Oedema- periorbital, pitting oedema of legs Ascites, small pleural effusions Frothy urine Proteinuria Intravascular depletion
What are the types of causes of nephrotic syndrome?
Idiopathic
Acquired
Congenital
What are the idiopathic causes of nephrotic syndrome?
Minimal change disease
Focal segmental glomerulosclerosis
Membranoproliferative glomerulonephritis
What are the most common causes of acquired nephrotic syndrome?
IgA related vasculitis
Lupus
Post infective
What does IgA vasculitic affect?
Mesangial cells
What does lupus affect?
Endothelial cells