کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6271610 | 1614766 | 2015 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Altered hippocampal plasticity by prenatal kynurenine administration, kynurenine-3-monoxygenase (KMO) deletion or galantamine
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کلمات کلیدی
MLAN-methyl-d-aspartateNMDATBSTP21Cambridge Electronic DesignDcxIDOaCSFDISC1TDOHRPPPIPPFCEDKynureninesPCNApostnatal Day 21fEPSPs - fEPSP هاKMO - SMEProliferating Cell Nuclear Antigen - آنتیژن هسته ای تکثیر سلولیkynurenic acid - اسید کینورنیکanalysis of variance - تحلیل واریانسANOVA - تحلیل واریانس Analysis of varianceTryptophan - تریپتوفانtryptophan-2,3-dioxygenase - تریپتوفان-2،3-دیوکسیرینازpaired-pulse facilitation - تسکین زوایای پالسیlong-term potentiation - تقویت درازمدتLTP - تقویت طولانی مدت یا LTP neurodevelopment - توسعه عصبیShh - خیرdoublecortin - دوچرخهsonic hedgehog - صدای جیر جیرartificial cerebrospinal fluid - مایع مغزی نخاعی مصنوعیPaired-pulse inhibition - مهار زوج پالسfield excitatory postsynaptic potentials - پتانسیل پستنیپتیک تحریک پذیری میدانHorseradish peroxidase - پراکسیداز هوررادیش
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Altered hippocampal plasticity by prenatal kynurenine administration, kynurenine-3-monoxygenase (KMO) deletion or galantamine Altered hippocampal plasticity by prenatal kynurenine administration, kynurenine-3-monoxygenase (KMO) deletion or galantamine](/preview/png/6271610.png)
چکیده انگلیسی
Glutamate receptors sensitive to N-methyl-d-aspartate (NMDA) are involved in embryonic brain development but their activity may be modulated by the kynurenine pathway of tryptophan metabolism which includes an agonist (quinolinic acid) and an antagonist (kynurenic acid) at these receptors. Our previous work has shown that prenatal inhibition of the pathway produces abnormalities of brain development. In the present study kynurenine and probenecid (both 100Â mg/kg, doses known to increase kynurenic acid levels in the brain) were administered to female Wistar rats on embryonic days E14, E16 and E18 of gestation and the litter was allowed to develop to post-natal day P60. Western blotting revealed no changes in hippocampal expression of several proteins previously found to be altered by inhibition of the kynurenine pathway including the NMDA receptor subunits GluN1, GluN2A and GluN2B, as well as doublecortin, Proliferating Cell Nuclear Antigen (PCNA), sonic hedgehog and unco-ordinated (unc)-5H1 and 5H3. Mice lacking the enzyme kynurenine-3-monoxygenase (KMO) also showed no changes in hippocampal expression of several of these proteins or the 70-kDa and 100-kDa variants of Disrupted in Schizophrenia-1 (DISC1). Electrical excitability of pyramidal neurons in the CA1 region of hippocampal slices was unchanged, as was paired-pulse facilitation and inhibition. Long-term potentiation was decreased in the kynurenine-treated rats and in the KMO(â/â) mice, but galantamine reversed this effect in the presence of nicotinic receptor antagonists, consistent with evidence that it can potentiate glutamate at NMDA receptors. It is concluded that interference with the kynurenine pathway in utero can have lasting effects on brain function of the offspring, implying that the kynurenine pathway is involved in the regulation of early brain development.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 310, 3 December 2015, Pages 91-105
Journal: Neuroscience - Volume 310, 3 December 2015, Pages 91-105
نویسندگان
C.M. Forrest, K. McNair, M. Pisar, O.S. Khalil, L.G. Darlington, T.W. Stone,