1992
DOI: 10.1016/0006-8993(92)91546-q
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Neurotoxic effects of the intrastriatal injection of spermine and spermidine: lack of involvement of NMDA receptors

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Cited by 26 publications
(10 citation statements)
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“…Given a recovery of -25% across the dialysis membrane at this flow rate, extracellular spermidine concentrations in the parietal cortex following permanent MCA occlusion are within the low micromolar range. Spermidine (and spennine) are neurotoxic, per se, in hippocampal slices at micromolar concentrations (from 50 p M ) (Virgili et al, 1992), and are also neurotoxic following intrastriatal injection (Virgili et al, 1992;Bourdiol et al, 1992). Frank polyamine neurotoxicity, induced by high polyamine concentrations, in vitro or in vivo, is not sensitive to NMDA antagonists (Virgili el al, 1992;Bourdiol et al, 1992).…”
Section: Resultsmentioning
confidence: 99%
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“…Given a recovery of -25% across the dialysis membrane at this flow rate, extracellular spermidine concentrations in the parietal cortex following permanent MCA occlusion are within the low micromolar range. Spermidine (and spennine) are neurotoxic, per se, in hippocampal slices at micromolar concentrations (from 50 p M ) (Virgili et al, 1992), and are also neurotoxic following intrastriatal injection (Virgili et al, 1992;Bourdiol et al, 1992). Frank polyamine neurotoxicity, induced by high polyamine concentrations, in vitro or in vivo, is not sensitive to NMDA antagonists (Virgili el al, 1992;Bourdiol et al, 1992).…”
Section: Resultsmentioning
confidence: 99%
“…Spermidine (and spennine) are neurotoxic, per se, in hippocampal slices at micromolar concentrations (from 50 p M ) (Virgili et al, 1992), and are also neurotoxic following intrastriatal injection (Virgili et al, 1992;Bourdiol et al, 1992). Frank polyamine neurotoxicity, induced by high polyamine concentrations, in vitro or in vivo, is not sensitive to NMDA antagonists (Virgili el al, 1992;Bourdiol et al, 1992). Whether the spermidine concentrations attained in this study are sufficient to provoke NMDA receptor independent neurotoxicity is debateable.…”
Section: Resultsmentioning
confidence: 99%
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“…However, there are disparate reports in the literature concerning the involvement of NMDA receptor activation in polyamine‐induced neuronal toxicity. Thus, although many reports indicate that polyamine toxicity is mediated by an enhancement of NMDA receptor activation (Fahey et al, 1993; Munir et al, 1993; Otsuki et al, 1995; Sparapani et al, 1997), there are several investigations that have been unable to link NMDA receptor activation to polyamine toxicity (Bourdiol et al, 1992; Virgili et al, 1992; Doyle and Shaw, 1994). It is likely that different models (e.g., primary cell culture versus in vivo injections), cell types (e.g., striatal, hippocampal, cortical, or cerebellar granule), and experimental conditions all contribute to the apparent disparities among investigations.…”
Section: Discussionmentioning
confidence: 99%
“…Putrescine (300 nmol) is without these effects, while previous administration of MK-801 (10 mg/kg i.p.) has no protective effect against the neuronal loss by spermine and spermidine (Bourdiol et al, 1992;Virgili et al, 1992). In contrast, Otsuki et al, have shown a significant reduction of the volume of damage by the administration of 60 nmol MK-801 together with 100 nmol spermine, or by pre-treatment of animals with pentobarbital (Otsuki et al, 1995).…”
Section: Cytotoxicity Of Polyamines and Rele-vant Oxidation Productsmentioning
confidence: 96%