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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Treatment of tyramine-induced brain edema with anion transport inhibitor L-644,711.

Tyramine induces coma in phenelzine-treated dogs. Development of coma in these animals is associated with brain edema, abnormal brain scans of Tc-99m-diethylene-triamine-penta-acetic acid (Tc-99m-DTPA), and elevated levels of CSF catecholamines. We found that the intravenous administration of 6-7 mg/kg of a single dose of L-644,711 given fifteen minutes after the oral administration of tyramine to phenelzine-pretreated animals followed by an infusion of normal saline containing 6-7 mg/kg of the drug given over a period of 2 hr caused reversal of brain injury. This was accompanied by full recovery within a period of 24 hr of all the animals tested. A follow-up study revealed that 24 hr after treatment with L-644,711 CSF levels of catecholamines and brain images of Tc-99m-DTPA were indistinguishable from normal controls. Animals that received no drug died from unresolved coma within 4 to 24 hr. Animals that had recovered due to therapy with L-644,711 were given 10-14 days rest followed by a repetition of the phenelzine and tyramine treatment but denied L-644,711 therapy. These animals also died of unresolved coma within 24 hr. This preliminary study suggest that the use of L-644,711 may constitute an important advance in treatment of brain edema of a wide range of neurological disorders.[1]

References

  1. Treatment of tyramine-induced brain edema with anion transport inhibitor L-644,711. Faraj, B.A., Cragoe, E.J., Sarper, R., Camp, M., Malveaux, E. Life Sci. (1988) [Pubmed]
 
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