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return kwic search for molecular out of >500 occurrences
333489 occurrences (No.56 in the rank) during 5 years in the PubMed. [no cache] 500 found

144) Together, our data support a precisely timed cascade of complex molecular and subcellular transformations occurring from early to late MWM learning.

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PMID:24562414 DOI:10.1007/s00429-014-0722-z

2015 Brain structure & function

* Distinct and simultaneously active plasticity mechanisms in mouse hippocampus during different phases of Morris water maze training.

- Although the Morris water maze (MWM) is the most frequently used protocol to examine hippocampus-dependent learning in mice, not much is known about the spatio-temporal dynamics of underlying plasticity processes. Here, we studied molecular and cellular hippocampal plasticity mechanisms during early and late phases of spatial learning in the MWM. Quantitative in situ hybridization for the immediate early genes zif268 and Homer1a (H1a) revealed phase-dependent differences in their expression between areas CA1 and CA3. During the initial learning phase, CA1 expression levels of the molecular plasticity marker H1a, but not of the activity reporter gene zif268, were related to task proficiency; whereas no learning-specific changes could be detected in CA3. Simultaneously, the ratio of surface-expressed NMDAR subunits NR2A and NR2B was downregulated as measured by acute slice biotinylation assay, while the total number of surface NMDARs was unaltered. When intrinsic 'somatic' and synaptic plasticity in the CA1-region of hippocampal slices were examined, we found that early learning promotes intrinsic neuronal plasticity as manifested by a reduction of spike frequency adaptation and postburst afterhyperpolarization. At the synaptic level, however, maintenance of long-term potentiation (LTP) in all learning groups was impaired which is most likely due to 'intrinsic' learning-induced LTP which occluded any further electrically induced LTP. Late learning, in contrast, was characterized by re-normalized H1a, NR2A and NR2B expression and neuronal firing, yet a further strengthening of learning-induced LTP. Together, our data support a precisely timed cascade of complex molecular and subcellular transformations occurring from early to late MWM learning.

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(1)52 mechanisms	(19)5 docking	(37)3 recognition	(55)2 heparin
(2)26 weight	(20)5 information	(38)3 serotyping	(56)2 identification
(3)18 data	(21)5 methods	(39)3 sieve	(57)2 knowledge
(4)18 mechanism	(22)5 modeling	(40)3 structure	(58)2 mass
(5)16 dynamics	(23)5 phylogenetic	(41)3 techniques	(59)2 mechanisms,
(6)15 and	(24)5 targets	(42)3 variance	(60)2 or
(7)10 analysis	(25)4 diagnosis	(43)2 Dynamics	(61)2 oxygen
(8)10 basis	(26)4 interactions	(44)2 approach	(62)2 perspectives
(9)8 characterization	(27)4 level	(45)2 biological	(63)2 phenotypic
(10)7 epidemiology	(28)4 level,	(46)2 classification	(64)2 phylogenies
(11)7 genetic	(29)4 responses	(47)2 clock	(65)2 probes
(12)7 imaging	(30)4 target	(48)2 dating	(66)2 profiles
(13)6 biology	(31)3 evolution	(49)2 details	(67)2 subtype
(14)6 changes	(32)3 features	(50)2 diffusion	(68)2 therapies
(15)6 markers	(33)3 levels	(51)2 effects	(69)2 underpinnings
(16)6 pathways	(34)3 marker	(52)2 events
(17)5 analyses	(35)3 medicine	(53)2 evidence
(18)5 characteristics	(36)3 orbital	(54)2 genetics

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--- WordNet output for molecular --- =>分子の Overview of adj molecular The adj molecular has 2 senses (first 1 from tagged texts) 1. (6) molecular -- (relating to or produced by or consisting of molecules; "molecular structure"; "molecular oxygen"; "molecular weight is the sum of all the atoms in a molecule") 2. molecular -- (relating to simple or elementary organization; "proceed by more and more detailed analysis to the molecular facts of perception"--G.A. Miller) --- WordNet end ---