ALS_Presentation.pptx

• newEditor
• Science
• Upper Secondary (Key Stage 4)
• BTEC

Understanding Amyotrophic Lateral Sclerosis (ALS)

Causes, Symptoms, and Treatment

Your Name

Date

Introduction to ALS

• What is ALS?

• - A progressive neurodegenerative disorder.

• - Affects nerve cells (motor neurons) in the brain and spinal cord.

• - Leads to muscle weakness, loss of mobility, and paralysis.

Types of ALS

• Sporadic ALS:

• - Most common (90-95% of cases).

• - No known genetic cause.

• - Risk factors include age, gender, environmental exposure.

• Familial ALS:

• - Inherited, accounts for 5-10% of cases.

• - Caused by genetic mutations passed down from parents.

Causes of ALS

• Genetics: In familial ALS, mutations in genes like SOD1, C9orf72, and FUS.

• Environmental Factors: Exposure to toxins, chemicals, heavy metals, or physical trauma.

• Age & Gender: More common in people aged 40-70, with a higher risk in men.

• Other Contributing Factors:

• - Mitochondrial dysfunction

• - Oxidative stress

• - Excitotoxicity

• - Immune system dysfunction

Symptoms of ALS

• Initial Symptoms:

• - Muscle weakness, cramps, and twitching.

• - Difficulty speaking, swallowing, and breathing.

• Progressive Symptoms:

• - Loss of fine motor skills.

• - Paralysis as motor neurons deteriorate.

Diagnosis of ALS

• Clinical Examination: Observing motor skills, reflexes, and muscle strength.

• Electromyography (EMG): Measures electrical activity in muscles.

• MRI: To rule out other conditions.

• Genetic Testing: For familial ALS.

Treatment of ALS

• No Cure: ALS is progressive and currently irreversible.

• Medications:

• - Riluzole and Edaravone may slow progression slightly.

• Symptom Management:

• - Physical therapy, occupational therapy, speech therapy.

• - Respiratory support via ventilators as the disease advances.

Prognosis and Life Expectancy

• Average Life Expectancy:

• - Typically 3 to 5 years after diagnosis.

• - Some individuals live longer with slower progression.

• Factors Affecting Prognosis:

• - Rate of disease progression.

• - Access to care and supportive therapies.

Research and Future Directions

• Gene Therapy: Experimental treatments to address genetic mutations.

• Stem Cell Research: Investigating potential regeneration of motor neurons.

• New Medications: Ongoing trials to find treatments that can slow or stop the progression of ALS.

Conclusion

• ALS is a devastating disease with no known cure.

• Ongoing research is crucial for finding more effective treatments.

• Early diagnosis and supportive care can help improve quality of life.

Questions and Discussion

• Open the floor for any questions or discussions from the audience.