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Chap 28- Demyelinating Diseases
49
Biology
Graduate
03/01/2012

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Term
Progressive Multifocal Leukoencephalopathy
Definition
JC virus infection of oliogodendrocytes leading to myelin loss
Term
Multiple Sclerosis (Sex)
Definition
Females over males
Term
MS (course of action)
Definition
Relapse remitting or progressive
Term
Cause of MS
Definition
Autoimmunity against myelin sheath
Term
MS innitiated by what types of cells
Definition
CD4+ cells Th1 and Th17
Term
Th1
Definition
Activates macrophages
Term
Th17
Definition
activates luekocytes
Term
What provides the oligoclonal bands in CSF
Definition
B-cells
Term
What are the most frequent areas for plagues in MS
Definition
Lateral Ventricles, cerebellum,brainstem, optic nerve and chiasm
Term
Pattern I MS
Definition
On BV with immunologlobulin and complement
Term
Pattern II MS
Definition
On BV but no immunoglobulin or complement
Term
Pattern III
Definition
Not on vessel but has complement or immunoglobulin
Term
Pattern IV MS
Definition
not on BV no immunoglobulin or complement
Term
CSF in MS shows what?
Definition
Elevated protein, elevated cell count, oligoclonial bands (IgG levels), gadolinium enhances lesions on MRI
Term
what is Neuromyelitis Optica
Definition
bilateral optic neuritits and spinal cord demelination
Term
What is the cause of Neuromyelitis Optica
Definition
Due to AI against aquaporin channels leading to destruction of BBB and necrosis and inflammation of the optic nerve by complement and immunoglobulin
Term
what causes Acute Disseminated encephalomhyelitis
Definition
Follows viral infection or immunization
Term
How does Acute Disseminated encephalomhyelitis present
Definition
Headache, lethargy, coma can lead to death or complete recovery
Term
what is Acute Necronizing hemmorrhagic encephalomyelitis
Definition
AI demyelination which affects children and adolescents after an upper respiratory infection
Term
How do lesions differ in ADEM from MS
Definition
Lesions all appear similar and occur only in white matter
Term
How does Acute necrotizing hemorrhagic encephalomyelitis differ from ADEM
Definition
includes destruction of small blood vessels, necrosis of white and grey matter, hemmorages, fibrin deposits and neutrophils
Term
what is the cause of Central Pontine Myelinolysis
Definition
Rapid Hyponatremia or other electrolite disorders
Term
Where does central pontine myelinolysis present
Definition
In pons and pontine tegmentum, rarely below ponsmedullary junction
Term
Clincal presentation of Central pontine myelinolysis
Definition
rapidly evolving quadraplegia, and imaging of pons lesions without inflammation
Term
What is the mutated protein in Huntingtons
Definition
Expaneded polyglutamine repeats
Term
What is the peptide that causes Alzheimers
Definition
AB
Term
What is the altered protein in Parkinsons
Definition
Alpha-synuclein
Term
Morphology of AD
Definition
widened sulci , cortical atrophy, ventricular enlargement, reduced brain volume, plaques and tangles
Term
Diffues plaques
Definition
AB peptides which stain for amyloid but lack the astrocytes and glial cells surrounding, early onset of development
Term
"Ghosts"
Definition
remnanats of neurofibrial tangles even after neuron cell death
Term
Component of neurotangles
Definition
Tau protein, MAP2 and ubiquitin
Term
Cerebral Amyloid Angiopathy
Definition
Often accompanies AD, with pred AB 40
Term
Granulovaculolar degeneration
Definition
small, clear vacuoles with argyrophilic granules
Term
Hirano Bodies
Definition
long eosinophilic beeded filaments with actin as major component
Term
What is cleaved to form AB in AD
Definition
APP surface protein by b-secretase followed by y-secretase
Term
Where is APP mutations found
Definition
Chrom 21- Down Syndrome features
PS1 and PS2
Term
What is the usual terminal illness of those with Alzhemers Disease
Definition
Pneumonia
Term
Frontotemporal Dementias
Definition
degeneration and atrophy of the frontal and temporal lobes leading to language and personalitiy changes
Term
Knife Edge, wafer thin gyri
Definition
Picks Disease (morphology)
Term
Contain 3R ONLY and do not produce ghosts
Definition
Pick Disease
Term
Composed for 4R tau
Definition
Progressive Supranuclear Palsy
Term
Progressive Supranuclear Palsy
Definition
dementia, ridgid trunk, dysequillibrium, nuchal dystonia, pseudobulbular palsy, abnormal speech, occular disturbacnces in superior direction
Term
Ballooned Neurons
Definition
Corticobasal Degeneration
Term
Extraparmidal ridgity, senesory dysfunction of language and apraxia, jerking limb movements---4R-Tau
Definition
Corticobasal Degeneration
Term
Lewy Bodies
Definition
Parkinsons
Term
Alpha-synuclein
Definition
Parkinsons issue
Term
What occurs in parkinsons
Definition
loss of substantia niagra due to damage to chatamecholine neurons
Term
Pill rolling, festinated gait and slow motor movements
Definition
Parkinsins defining features
Term
MTPT Toxin
Definition
Can lead to parkinson like symptoms when used to make psychodelic drugs
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