Stone, William E. published the article 《Effects of alterations in the metabolism of γ-aminobutyrate on convulsant potencies》. Keywords: GABA convulsant mechanism; mercaptopropionate convulsion GABA; pentamethylenetetrazole convulsion GABA; bicuculline convulsion GABA; picrotoxin convulsion GABA.They researched the compound: 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride( cas:148-51-6 ).Name: 5-(hydroxymethyl)-2,4-dimethylpyridin-3-ol hydrochloride. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:148-51-6) here.
Drugs that alter γ-aminobutyrate (GABA) [56-12-2] metabolism and presumably affect the availability of GABA in synaptic regions were tested for their relative effects on the potencies of 4 convulsants: 3-mercaptopropionate (3-MP) [107-96-0], pentamethylenetetrazole (PTZ) [54-95-5], bicuculline [485-49-4], and picrotoxin [124-87-8] in mice. Aminooxyacetic acid hemichloride [2921-14-4] given prior to the convulsant tended to decrease the potency of 3-MP more than that of PTZ. It decreased the potency of bicuculline more than that of PTZ but less than that of 3-MP, and did not alter that of picrotoxin. Thiocarbohydrazide (TCH) [2231-57-4], DL-C-allylglycine [7685-44-1], and 4-deoxypyridoxine-HCl (DOP) [148-51-6] tended to potentiate 3-MP more than PTZ. The effects of allylglycine on bicuculline and picrotoxin were intermediate. DOP potentiated bicuculline and picrotoxin only to the extent that it potentiated PTZ. TCH resembled DOP in its effect on bicuculline. Valproic acid [99-66-1] decreased the potency of each convulsant; it was most effective against PTZ, slightly less so against 3-MP, and still less effective against bicuculline and picrotoxin. Its anticonvulsive action probably is not primarily via the GABA system. Phenelzine [51-71-8] slightly decreased the potency of bicuculline, but potentiated 3-MP and picrotoxin and did not affect the potency of PTZ. Diacetyl monoxime [57-71-6] was anticonvulsive against PTZ, bicuculline, and picrotoxin, but not against 3-MP. The results do not support the view that bicuculline and picrotoxin induce seizures by blocking GABA-mediated inhibition.
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Reference:
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia