mon 24 Flashcards
membranous nephropathy may be caused by antibodies to which substance?
phospholipase A2 receptor (expressed on podocytes)
what is the immunofluorescence pattern seen in membranous nephropathy?
granular due to immune complex deposition
what is the EM pattern seen on membranous nephropathy?
spike and dome
what causes the mesangial expainsion in diabetic glomerulonephropathy?
nonenzymatic glycation of tissue proteins
diffuse proliferative glomerulonephritis is often due to which disease?
SLE
what will b seen on LM or diffuse proliferative glomerulonephritis?
wire looping
inheritance of alport syndrome?
x linked
type II membranoproliferative glomerulonephritis will have which igG autoantibody?
C3 nephritic factor - stabilizes C3 convertase
why does imatinib help treat GIST?
it ALSO blocks c-kit tyrosine kinase
what does erlotinib block?
EGFR
erlotinib A/E?
diarrhea and acneiform rash
what do sunitinib and sorafenib inhibit?
VEGFR overexpresison
what does vemurafenib inhibit?
B-raf (BRAF)
what cancer commonly has a V600E BRAF mutation?
malignant melanoma
what does bevacuzimab target?
VEGF
what kind of drugs are carmustine and lomustine?
nitrosureas
how does valproic acid affect weight?
weight gain
how does topiramate affect weight?
weight loss
side effects of lamotrigine?
diplopia, SJS
which antiseizure drug is associated with gingival hypertrophy?
phenytoin
which antiseizure drug is associated with hirsutism?
phenytoin
which antiseizure drug is associated with SIADH?
carbamazepine
gabapentin MOA?
blocks Ca channels
MOA of ethosuxamide?
blocks T type Ca channels in thalamus
which seizure drug may cause acute closed angle glaucoma?
topiramate
carbamazepine MOA?
increases Na channel inactivation
A/E of carbemapazine?
- SIADH
- agranulocytosis
- DRESS syndrome
- SJS
phenytoin MOA?
increases Na channel inactivation
effects of phenytoin and carbamazepine on CYP 450s?
inducers
gabapentin MOA
blocks voltage gated Ca channels
what is primidone?
barbituate
effects of V1 activation?
vasoconstrictino
what type of receptor is V1?
Gq
what type of receptor is V2?
Gs
where are V2 receptors found?
the collecting duct
how does administering desmopressin help treat esophageal varicies?
it causes vasoconstriction -> reduced bleeding
MOA of the ‘vaptan’ drugs?
BLOCK V2 receptors- treat SIADH
demeclocycline use?
treats SIADH