کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4342031 | 1295853 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
P2 receptor-stimulation influences axonal outgrowth in the developing hippocampus in vitro
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کلمات کلیدی
DABpyridoxalphosphate-6-azophenyl-2′,4′-disulphonic acidRT-PCRP2 receptor antagonistaCSFdiaminobenzidine hydrochloride2MeSATPPPADSMAP2ATP - آدنوزین تری فسفات یا ATPphosphate buffer - بافر فسفاتminimal essential medium - حداقل وسایل ضروریDIV - دیوdays in vitro - روز in vitroEntorhinal cortex - قشر انتورینالMEM - مامانartificial cerebrospinal fluid - مایع مغزی نخاعی مصنوعیHippocampus - هیپوکامپ reverse transcriptase–polymerase chain reaction - واکنش زنجیره ای Transcriptase-Polymerase معکوسmicrotubule-associated protein 2 - پروتئین مرتبط با میکروتوبول 2
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
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چکیده انگلیسی
Extracellular ATP might act as a trophic factor on growing axons during development of the CNS via P2 receptors. In the present study the postnatal presence of selected P2 receptor subtypes was analyzed and their putative trophic capacity in entorhino-hippocampal slice co-cultures of mouse brain was tested. The effect of the P2 receptor ligands 2-methylthioadenosine-5â²-triphosphate (P2X/Y receptor agonist) and pyridoxalphosphate-6-azophenyl-2â²,4â²-disulphonic acid (P2X/Y receptor antagonist) on axonal growth and fiber density of biocytin-labeled hippocampal projections was compared both with untreated cultures and with cultures treated with artificial cerebrospinal fluid. After 10 days in vitro, double immunofluorescence labeling revealed the expression of P2X1, P2X2, P2X4 as well as P2Y1 and P2Y2 receptors in the examined regions of entorhinal fiber termination. Further, quantitative analysis of identified biocytin-traced entorhinal fibers showed a significant increase in fiber density in the dentate gyrus after incubation of the slices with the P2 receptor agonist 2-methylthioadenosine-5â²-triphosphate. This neurite outgrowth promoting effect was completely abolished by the P2 receptor antagonist pyridoxalphosphate-6-azophenyl-2â²,4â²-disulphonic acid. Our in vitro data indicate that ATP via its P2X and P2Y receptors can shape hippocampal connectivity during development.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience - Volume 138, Issue 1, 2006, Pages 303-311
Journal: Neuroscience - Volume 138, Issue 1, 2006, Pages 303-311
نویسندگان
C. Heine, B. Heimrich, J. Vogt, A. Wegner, P. Illes, Heike Franke,