Use of human food composition with low polyamine content in production of food for combating syndromes or disorders involving NR2-N subunit of N-methyl-D-aspartate receptor e.g. sensitization to pain, ischemia and neurodegenerative diseases

摘要

The use of a human food composition (A) containing less than 1600 picomoles per g of polyamines (I) is claimed in the production of a therapeutic food for combating syndromes or disorders involving the NR2-N subunit of the N-methyl-D-aspartate (NMDA) receptor. ACTIVITY : Analgesic; Vasotropic; Neuroprotective; Nootropic; Antiparkinsonian; Anticonvulsant; Virucide; Antimanic; Antidepressant; Neuroleptic; Antiaddictive; Auditory. In tests in rats fed (a) a solid diet with a very low polyamine (I) content of less than 10 mu g/kg or (b) the same diet supplemented with the polyamines putrescine (54 mg/kg), spermine (7 mg/kg) and spermidine (7 mg/kg) (i.e. the levels present in normal rodent feed), the sensitivity to pain caused by two injections (7 days apart) of carrageenan into the paw was measured by the Randall-Selitto test. The level of pain in the days following the second injection was markedly lower in group (a) than that in group (b), demonstrating that the low-(I) diet in group (a) reduced the sensitivity to pain. The levels of pain in the days following the first injection were not significantly different, demonstrating the low-(I) diet had no direct analgesic effect. MECHANISM OF ACTION : NMDA receptor NR2-N subunit modulator.