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Botulinum toxin, or botulinum neurotoxin (commonly called botox), is a neurotoxic protein produced by the bacterium Clostridium botulinum and related species. [24] It prevents the release of the neurotransmitter acetylcholine from axon endings at the neuromuscular junction , thus causing flaccid paralysis . [ 25 ]
Along with some strains of Clostridium butyricum and Clostridium baratii, these bacteria all produce the toxin. [2] Botulinum toxin can cause botulism, a severe flaccid paralytic disease in humans and other animals, [3] and is the most potent toxin known to science, natural or synthetic, with a lethal dose of 1.3–2.1 ng/kg in humans. [4] [5]
Glycine is an important amino acid that is essential for adequate nervous system function aiding in cell communication throughout the body. When tetanus toxin enters the body it is taken up by cholinergic nerve endings traveling axonally into the brain and spinal cord, disrupting motor function in individuals. Although tetanus is a damaging ...
At low concentrations of toxin, more subtle effects such as modulation of host cell signal transduction may be observed in the absence of cell lysis. Membrane-damaging toxins can be divided into two categories, the channel-forming toxins and toxins that function as enzymes that act on the membrane.
However, for some highly potent toxins (ex. lofentanil, botulinum toxin) the difference between the ED 50 and TD 50 is so minute that the values assigned to them may be approximated to equal doses. Since toxicity need not be lethal, the TD 50 is generally lower than the median lethal dose (LD 50 ), and the latter can be considered an upper ...
Female body shape or female figure is the cumulative product of a woman's bone structure along with the distribution of muscle and fat on the body. Female figures are typically narrower at the waist than at the bust and hips .
Neurotoxicity is a form of toxicity in which a biological, chemical, or physical agent produces an adverse effect on the structure or function of the central and/or peripheral nervous system. [1] It occurs when exposure to a substance – specifically, a neurotoxin or neurotoxicant – alters the normal activity of the nervous system in such a ...
BAT is the only FDA-approved product available for treating botulism in adults, and for botulism in infants caused by botulinum toxins other than types A and B. BAT has been used to treat a case of type F infant botulism and, on a case-by-case basis, may be used for future cases of non-type A and non-type B infant botulism.