Immunology

How the immune system learns from harmless particles

Our lungs are bombarded by all manner of different particles every single day. While some are perfectly safe for us, others—known as pathogens—have the potential to make us ill. The immune system trains its response whenever ...

Medications

US company withdraws ALS drug after it fails in trial

Amylyx Pharmaceuticals announced Thursday it was withdrawing its approved treatment against the deadly neurodegenerative disease ALS after clinical data found no evidence the drug worked.

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Neurodegenerative disease

Neurodegenerative disease (Greek νέυρο-, néuro-, "nerval" and Latin dēgenerāre, "to decline" or "to worsen") is a condition in which cells of the brain and spinal cord are lost. The brain and spinal cord are composed of neurons that do different functions such as controlling movements, processing sensory information, and making decisions. Cells of the brain and spinal cord are not readily regenerated en masse, so excessive damage can be devastating. Neurodegenerative diseases result from deterioration of neurons or their myelin sheath which over time will lead to dysfunction and disabilities resulting from this.

Some sources limit the term "degenerative" to conditions primarily affecting gray matter that are not associated with a obvious inciting event.

This text uses material from Wikipedia, licensed under CC BY-SA