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Mechanism of Botulinum Toxin

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Uploaded by on Oct 20, 2009

Botulinum is a bacterial toxin produced by a bacteria Clostridium botulinum that causes the most severe form of food poisoning. The disease is called Botulism, the potentially deadly food poisoning characterized by muscle paralysis. In a normal muscle, the place where a nerve ends to give the command to the muscle is called the muscle end plate. There is a gap between the nerve ending and the muscle surface. From the stimulated nerve, a chemical called Acetyl choline is released that bridges the gap and stimulates the muscle to cause it to contract. Botulinum destroys the muscle end-plates capability to respond to the chemical secreted from the nerve ending. It takes 2 to 4 months for the nerve to regenerate a new muscle end plate. Till that time, the affected muscle remains paralyzed. However, small doses of Botulinum toxin injections can have a paradoxical benefit for some stroke survivors and patients with spasticity due to Cerebral Palsy. The toxin can reduce the leg muscle spasticity that hampers their ability to walk, run and do active work to a variable extent. The present animation gives a brief idea about the mechanism of Botulinum toxin.

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Top Comments

  • Botulinum must be so toxic that even contemplating it causes either a temporary deafness or muteness - I'm not sure which...

  • Is there any narration on this video? It's perfect for my micro class!

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All Comments (8)

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  • hey, i'm confused... i thought botulinum toxin is a protein? when it passes through the GI, wouldn't it be digested?

  • Actually botulinum is the second most deadly substance on earth only to snookie's bikini sweat. If it is not contained the whole human race could be wiped out

  • why pancreases? 

  • shit happens forest gump forever

  • @xxCrAzYcAnUkxXx Damnit Risking their life for their beauty. The human race really have gone this Deep i mean. First the Hippies and now these things Omg

  • 100 grams of this stuff can kill every human in the world yet we...er i mean dumb celebrities or insecure women use this to stop wrinkles do you see the stupidity of people these days

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