Neuropathology Flashcards
When are balloon cells and Hirano bodies seen together?
Pick’s disease
What happens to frontal and temporal lobes in Pick’s disease?
Asymmetrical atrophy
What are pick cells?
Swollen cortical pyramidal cells
What is the spongiform encephalopathy secondary to in CJD?
Neutropil vacuolation
Protective factor against Alzheimer’s dementia
Smoking
NSAIDs
Oestrogen
Premorbid intelligence and education
Macroscopic changes in Alzheimer’s
Enlargement of lateral and 3rd ventricles
Global brain atrophy
Reduction in brain weight
Sulcal widening
Microscopic changes in cerebral cortex in Alzheimer’s
Neuronal loss Senile plaques Neurofibrillary tangles Reactive astrocytosis Shrinking of dendritic branching
Stain used in detection of Pick bodies
Anti-tau antibodies
Which memories are lost in dissociative amnesia?
Loss of memory of personal events well rehearsed
Histological changes of dementia pugilistica
Neuronal loss
Neurofibrillary tangles
Macroscopic changes in dementia pugilistica
Thinning of corpus callosum
Perforation of septum pellucidum
Ventricular enlargement
What are lewy bodies made of?
Alpha synuclein
Ubiqutin
What are lewy bodies made of?
Alpha synuclein
Ubiqutin
Where would you find the degenerative changes associated with Wernicke’s encephalopathy?
Gliosis and small haemorrhages in structures surrounding the third ventricle and aqueduct - mamillary bodies, hypothalamus, mediodorsal thalamic nucleus, colliculi and midbrain tegmentum
Findings in CSF of somebody with Alzheimer’s
Reduced beta-amyloid
Increased tau and phosphorylated tau
Increased tau-to-amyloid ratio
MRI findings of somebody with aggression and stereotyped motor behaviour
Hypoplastic cerebellum
What are hirano bodies made of?
Intracellular aggregates of actin and actin-associated proteins
What is Binswanger’s disease?
Subcortical vascular dementia
What is Binswanger’s characterised by?
Presence of many small infarctions of the white matter that spares the cortical regions
Is there correlation between number of lewy bodies and cognitive decline?
There is no simple correlation
Which antibody could be used to identify Lewy bodies?
Antibody to protease ubiquitin