⏬One of my favorite 📚 about the topic (non medical and it focuses on familial forms)
Introduction 🚨
As seen in other types of neurodegenerative disorders (AD), the main localization of the pathological process will give rise to the main symptoms.
"It's not about pathophysiology, it's about localization." 🧠🤓🥸
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1⃣ Heidenhain Variant
Posterior localization, think 🤔
Visual disturbances first: 👀👁🗨👁️
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2⃣ Brownell-Oppenheimer variant
"Pure cerebellar form" (at the beginning) 🧠
Progressive subacute cerebellar deficits🤔
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3⃣ Stern-Garcin variant
Thalamic and basal ganglia predominant involvement 🧠🕺
🤔Falls and severe parkinsonism are the main characteristics. 🧑🦯
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4⃣ Amyotrophic variant?
Most controversial
Think 🤔LMN involvement is prominent 🔨
ALS like features (fasciculations, weakness, atrophy, EMG changes, etc.)🍖
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5⃣ Classical variant🧠
"Rapidly progressive dementia syndrome" 🤔 +/-
ataxia at illness onset
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Careful clinical exam and history may help accurate diagnosis. 🥼
Unfortunately as of today, there is no effective treatment, nevertheless, advance care planning is an invaluable tool which may help not only the patients, but the families as well. ✍️
a) Spinal-Onset ALS
b) Progressive Muscular Atrophy
c) Progressive Bulbar Palsy/Bulbar-onset ALS
d) Facial onset sensory and motor neuronopathy (FOSMN)
e) Flail-arm syndrome (Vulpian-Bernhardt syndrome): LMN upper limbs and UMN (usually only brisk reflexes in lower limbs)
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f) Hirayama disease: monomelic amyotrophy
g) O’Sullivan-McLeod syndrome: slowly progressive distal amyotrophy of the hands and forearms extending over long periods of time
h) Flail-leg syndrome
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"A characteristic that is objectively measured and evaluated as an indicator of normal biological processes, pathogenic processes, or pharmacologic responses to a therapeutic intervention." 🩸🧠
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Introduction
What is the use of biomarkers? 🧠
Diagnostic tool🪓
Tool for staging the disease 🥼
Indicator of prognosis📡
Predic or monitor of clinical response to an intervention🚨
Remember: "tools"should aid clinicians, not be the source of all truth.
DLB belongs to a family of disorders typically known as "synucleinopathies" 🔬
Other members are:
- MSA
- PD
- PDD
All of them have abnormal inclusions of α-Synuclein at a pathological level.
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⚠️⚠️⚠️
"Pathology is not pathogenesis", therefore we shouldn't assume that the presence of these pathological changes are a synonym of "protein toxicity".