The immunosuppressant mycophenolate mofetil improves preservation of the perforant path in organotypic hippocampal slice cultures: a retrograde tracing study.

Abstract:

:Previous studies with excitotoxically lesioned organotypic hippocampal slice cultures (OHSC) have revealed that the immunosuppressant mycophenolate mofetil (MMF) inhibits microglial activation and suppresses neuronal injury in the dentate gyrus. We here investigate whether MMF also has beneficial effects on axon survival in a long-range projection, the perforant path. Complex OHSC including the entorhinal cortex were obtained from Wistar rats (p8); the plane of section ensuring that perforant path integrity was preserved. These preparations were cultured for 9 days in vitro with or without MMF (100 microg/ml). After fixation, the perforant path was retrogradely labeled by application of the fluorescent dye DiI (1,1'-dioctadecyl-3,3,3',3'-tetramethylindo-carbocyanine) in the hilus of the dentate gyrus, and neuronal perikarya were immunohistochemically stained by the neuron-specific marker NeuN. Analysis of DiI-labeled and NeuN-stained OHSC by confocal laser scanning microscopy revealed double-labeled neurons in the entorhinal cortex, which projected to the dentate gyrus via the perforant path. Quantitative analysis showed that the number of these double-labeled neurons was 19-fold higher in OHSC treated with MMF than in control cultures (P < 0.05). Our findings indicate that MMF treatment improves preservation of the perforant path and encourage further studies on development and regeneration of long-range projections under the influence of immunosuppressants.

journal_name

Hippocampus

journal_title

Hippocampus

authors

Oest TM,Dehghani F,Korf HW,Hailer NP

doi

10.1002/hipo.20182

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

437-42

issue

5

eissn

1050-9631

issn

1098-1063

journal_volume

16

pub_type

杂志文章
  • Firing of human hippocampal units in relation to voluntary movements.

    abstract::During certain movements (termed "type I," "instrumental," or "voluntary"), the rodent hippocampal EEG is dominated by regular 7-10 Hz waves. This "theta rhythm" is accompanied by increased firing of hippocampal interneurons and dentate gyrus granule cells. No obvious theta rhythm is present in comparable situations i...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.450010204

    authors: Halgren E

    更新日期:1991-04-01 00:00:00

  • Early loss of interneurons and delayed subunit-specific changes in GABA(A)-receptor expression in a mouse model of mesial temporal lobe epilepsy.

    abstract::Unilateral injection of kainic acid (KA) into the dorsal hippocampus of adult mice induces spontaneous recurrent partial seizures and replicates histopathological changes observed in human mesial temporal lobe epilepsy (MTLE) (Bouilleret V et al., Neuroscience 1999; 89:717-729). Alterations in pre- and postsynaptic co...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/1098-1063(2000)10:3<305::AID-HIPO11>3.0.CO

    authors: Bouilleret V,Loup F,Kiener T,Marescaux C,Fritschy JM

    更新日期:2000-01-01 00:00:00

  • Human hippocampal theta activity during virtual navigation.

    abstract::This study examines whether 4-8-Hz theta oscillations can be seen in the human hippocampus, and whether these oscillations increase during virtual movement and searching, as they do in rodents. Recordings from both hippocampal and neocortical depth electrodes were analyzed while six epileptic patients played a virtual...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20109

    authors: Ekstrom AD,Caplan JB,Ho E,Shattuck K,Fried I,Kahana MJ

    更新日期:2005-01-01 00:00:00

  • Ras-GRF2 mediates long-term potentiation, survival, and response to an enriched environment of newborn neurons in the hippocampus.

    abstract::Hippocampal adult neurogenesis contributes to key functions of the dentate gyrus (DG), including contextual discrimination. This is due, at least in part, to the unique form of plasticity that new neurons display at a specific stage of their development when compared with the surrounding principal neurons. In addition...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22313

    authors: Darcy MJ,Trouche S,Jin SX,Feig LA

    更新日期:2014-11-01 00:00:00

  • Hippocampal LTP and memory in mouse strains: is there evidence for a causal relationship?

    abstract::The mechanisms underlying memory are under intense investigation. One of the most promising candidates at the cellular level is long-term potentiation (LTP). Numerous pharmacological and molecular genetic manipulations have led to alteration in both LTP and memory. However, the causal relationship between these phenot...

    journal_title:Hippocampus

    pub_type: 杂志文章,评审

    doi:10.1002/hipo.10101

    authors: Gerlai R

    更新日期:2002-01-01 00:00:00

  • The "eyes have it," but when in development?: The importance of a developmental perspective in our understanding of behavioral memory formation and the hippocampus.

    abstract::Lynn Nadel has been a trailblazer in memory research for decades. In just one example, Nadel and Zola-Morgan [Infantile amnesia, In Infant memory, Springer, Boston, MA, 1984, pp. 145-172] were the first to present the provocative notion that the extended development of the hippocampus may underlie the period of infant...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.23149

    authors: Edgin JO,Liu Y,Hughes K,Spanò G,Clark CAC

    更新日期:2020-08-01 00:00:00

  • Targeting hippocampal adult neurogenesis using transcription factors to reduce Alzheimer's disease-associated memory impairments.

    abstract::Hippocampal adult neurogenesis results in the persisting formation of new neurons that contribute to hippocampal-dependent learning and memory. This has led to the hypothesis that memory impairments associated with neurodegenerative diseases such as Alzheimer's disease may involve abnormal neurogenesis. Supporting thi...

    journal_title:Hippocampus

    pub_type: 杂志文章,评审

    doi:10.1002/hipo.23052

    authors: Dard RF,Dahan L,Rampon C

    更新日期:2019-07-01 00:00:00

  • GluR6-containing KA receptor mediates the activation of p38 MAP kinase in rat hippocampal CA1 region during brain ischemia injury.

    abstract::Our previous study showed that kainate (KA) receptor subunit GluR6 played an important role in ischemia-induced MLK3 and JNK activation and neuronal degeneration through the GluR6-PSD95-MLK3 signaling module. However, whether the KA receptors subunit GluR6 is involved in the activation of p38 MAP kinase during the tra...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20479

    authors: Chen J,Li C,Pei DS,Han D,Liu XM,Jiang HX,Wang XT,Guan QH,Wen XR,Hou XY,Zhang GY

    更新日期:2009-01-01 00:00:00

  • Effects of adult-generated granule cells on coordinated network activity in the dentate gyrus.

    abstract::Throughout the adult life of most mammals, new neurons are continuously generated in the dentate gyrus of the hippocampal formation. Recent work has documented specific cognitive deficits after elimination of adult hippocampal neurogenesis in rodents, suggesting that these neurons may contribute to information process...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20860

    authors: Lacefield CO,Itskov V,Reardon T,Hen R,Gordon JA

    更新日期:2012-01-01 00:00:00

  • SynCAM 1 improves survival of adult-born neurons by accelerating synapse maturation.

    abstract::The survival of adult-born dentate gyrus granule cells critically depends on their synaptic integration into the existing neuronal network. Excitatory inputs are thought to increase the survival rate of adult born neurons. Therefore, whether enhancing the stability of newly formed excitatory synapses by overexpressing...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22524

    authors: Doengi M,Krupp AJ,Körber N,Stein V

    更新日期:2016-03-01 00:00:00

  • Switching between persistent firing and depolarization block in individual rat CA1 pyramidal neurons.

    abstract::The hippocampal formation plays a role in mnemonic tasks and epileptic discharges in vivo. In vitro, these functions and malfunctions may relate to persistent firing (PF) and depolarization block (DB), respectively. Pyramidal neurons of the CA1 field have previously been reported to engage in either PF or DB during ch...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.23078

    authors: Knauer B,Yoshida M

    更新日期:2019-09-01 00:00:00

  • Lesion-induced gelsolin upregulation in the hippocampus following entorhinal deafferentation.

    abstract::Gelsolin is an actin-binding protein that regulates actin filament-severing and capping activity in the various processes of cell motilities. Here, we report the expression of gelsolin mRNA and protein in the hippocampus following transections of the entorhinal afferents. Northern blot analysis showed that transcript ...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20134

    authors: Dong JH,Ying GX,Liu X,Wang WY,Wang Y,Ni ZM,Zhou CF

    更新日期:2006-01-01 00:00:00

  • Galantamine enhancement of long-term potentiation is mediated by calcium/calmodulin-dependent protein kinase II and protein kinase C activation.

    abstract::Galantamine, a novel Alzheimer's drug, is known to inhibit acetylcholinesterase activity and potentiate nicotinic acetylcholine receptor (nAChR) in the brain. We previously reported that galantamine potentiates the NMDA-induced currents in primary cultured rat cortical neurons. We now studied the effects of galantamin...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20572

    authors: Moriguchi S,Shioda N,Han F,Yeh JZ,Narahashi T,Fukunaga K

    更新日期:2009-09-01 00:00:00

  • Neuroanatomical and behavioral effects of a novel version of the cholinergic immunotoxin mu p75-saporin in mice.

    abstract::The selective lesion of basal forebrain cholinergic neurons (BFCNs) is an unestimable tool to study the implication of these neurons in cognition, an interest widely motivated by their degeneration in Alzheimer's disease. Here we evaluated the histochemical and behavioral effects of a selective lesion of BFCNs in C57B...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20422

    authors: Moreau PH,Cosquer B,Jeltsch H,Cassel JC,Mathis C

    更新日期:2008-01-01 00:00:00

  • Induced theta oscillations mediate large-scale synchrony with mediotemporal areas during recollection in humans.

    abstract::One functional aspect of theta oscillations that recent studies have begun to explore in humans is their role for the recollection of personal events. A specific role of theta for recollection but not for stimulus-familiarity would support links between cortical theta oscillations and hippocampal functioning, given th...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20125

    authors: Guderian S,Düzel E

    更新日期:2005-01-01 00:00:00

  • Hippocampus as comparator: role of the two input and two output systems of the hippocampus in selection and registration of information.

    abstract::Processing of multimodal sensory information by the morphological subdivisions of the hippocampus and its input and output structures was investigated in unanesthetized rabbits by extracellular recording of neuronal activity. Analysis shows principal differences between CA3 neurons with uniform multimodal, mainly inhi...

    journal_title:Hippocampus

    pub_type: 杂志文章,评审

    doi:10.1002/hipo.1073

    authors: Vinogradova OS

    更新日期:2001-01-01 00:00:00

  • Learned integration of visual, vestibular, and motor cues in multiple brain regions computes head direction during visually guided navigation.

    abstract::Effective navigation depends upon reliable estimates of head direction (HD). Visual, vestibular, and outflow motor signals combine for this purpose in a brain system that includes dorsal tegmental nucleus, lateral mammillary nuclei, anterior dorsal thalamic nucleus, and the postsubiculum. Learning is needed to combine...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22040

    authors: Fortenberry B,Gorchetchnikov A,Grossberg S

    更新日期:2012-12-01 00:00:00

  • Motivation-related neuronal activity in the object discrimination task in monkey septal nuclei.

    abstract::Septal nuclei are suggested to work as an interface between the hippocampal formation, involved in higher cognitive functions, and the hypothalamus, involved in motivational behaviors such as feeding, drinking, and intracranial self-stimulation. In the present study, to elucidate a role of the septal nuclei in motivat...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/(SICI)1098-1063(1997)7:5<536::AID-HIPO9>3.

    authors: Nishijo H,Kita T,Tamura R,Eifuku S,Terasawa K,Ono T

    更新日期:1997-01-01 00:00:00

  • Structural correlates of subjective and objective memory performance in multiple sclerosis.

    abstract::Subjective and objective memory deficits represent a frequent and ill-understood aspect of multiple sclerosis (MS), and a significant cause of disability and quality of life reduction. The aim of the study is to verify the role of hippocampal and temporal associative fibers' damage in MS-related memory complaints. To ...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22237

    authors: Pardini M,Bergamino M,Bommarito G,Bonzano L,Luigi Mancardi G,Roccatagliata L

    更新日期:2014-04-01 00:00:00

  • Representation of three-dimensional objects by the rat perirhinal cortex.

    abstract::The perirhinal cortex (PRC) is known to play an important role in object recognition. Little is known, however, regarding the activity of PRC neurons during the presentation of stimuli that are commonly used for recognition memory tasks in rodents, that is, three-dimensional objects. Rats in the present study were exp...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22060

    authors: Burke SN,Maurer AP,Hartzell AL,Nematollahi S,Uprety A,Wallace JL,Barnes CA

    更新日期:2012-10-01 00:00:00

  • Serotonin excites hippocampal CA1 GABAergic interneurons at the stratum radiatum-stratum lacunosum moleculare border.

    abstract::The hippocampus receives robust serotonergic innervation that is thought to control the excitability of both pyramidal cells and GABAergic interneurons. Previous work has addressed serotonergic regulation of pyramidal cells but considerable gaps remain in our understanding of how serotonin regulates different interneu...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22611

    authors: Wyskiel DR,Andrade R

    更新日期:2016-09-01 00:00:00

  • Alterations in the balance of protein kinase and phosphatase activities and age-related impairments of synaptic transmission and long-term potentiation.

    abstract::Aging is associated with an impaired ability to maintain long-term potentiation (LTP), but the underlying cause of the impairment remains unclear. To gain a better understanding of the cellular and molecular mechanisms responsible for this impairment, the synaptic transmission and plasticity were studied in the CA1 re...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.10032

    authors: Hsu KS,Huang CC,Liang YC,Wu HM,Chen YL,Lo SW,Ho WC

    更新日期:2002-01-01 00:00:00

  • Long-term depression of inhibitory synaptic transmission induced by spike-timing dependent plasticity requires coactivation of endocannabinoid and muscarinic receptors.

    abstract::The precise timing of pre-postsynaptic activity is vital for the induction of long-term potentiation (LTP) or depression (LTD) at many central synapses. We show in synapses of rat CA1 pyramidal neurons in vitro that spike timing dependent plasticity (STDP) protocols that induce LTP at glutamatergic synapses can evoke ...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22196

    authors: Ahumada J,Fernández de Sevilla D,Couve A,Buño W,Fuenzalida M

    更新日期:2013-12-01 00:00:00

  • Two case studies illustrating how relatively selective hippocampal lesions in humans can have quite different effects on memory.

    abstract::Two patients, with magnetic resonance imaging (MRI)-confirmed relatively selective hippocampal damage, showed distinct patterns of performance on tests of recall, item recognition, and associative recognition. Patient AC showed a mean bilateral volume reduction of the hippocampus of 28%, but displayed no memory defici...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20427

    authors: Holdstock JS,Parslow DM,Morris RG,Fleminger S,Abrahams S,Denby C,Montaldi D,Mayes AR

    更新日期:2008-01-01 00:00:00

  • Long-lasting intrinsic persistent firing in rat CA1 pyramidal cells: a possible mechanism for active maintenance of memory.

    abstract::The hippocampus is critical for memory tasks which require an active maintenance of memory for a short period of time; however, the underlying neural mechanisms remain unknown. Most theoretical and computational models, which date back to the classic proposals by Donald Hebb in , have been self-constrained by anatomy,...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.22136

    authors: Knauer B,Jochems A,Valero-Aracama MJ,Yoshida M

    更新日期:2013-09-01 00:00:00

  • Teasing apart tangrams: testing hippocampal pattern separation with a collaborative referencing paradigm.

    abstract::The hippocampus and the medial temporal lobe cortex [medial temporal lobe cortices (MTLC)] both contribute to long-term memory. Although their contributions are thought to be dissociable, the nature of the representations that each region supports remains unclear. The Complementary Learning Systems (CLS) modeling appr...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20967

    authors: Duff MC,Warren DE,Gupta R,Vidal JP,Tranel D,Cohen NJ

    更新日期:2012-05-01 00:00:00

  • Causal evidence for the involvement of the neural cell adhesion molecule, NCAM, in chronic stress-induced cognitive impairments.

    abstract::In rodents, chronic stress induces long-lasting structural and functional alterations in the hippocampus, as well as learning and memory impairments. The neural cell adhesion molecule (NCAM) was previously hypothesized to be a key molecule in mediating the effects of stress due to its role in neuronal remodeling and s...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20723

    authors: Bisaz R,Schachner M,Sandi C

    更新日期:2011-01-01 00:00:00

  • Preserved hippocampal novelty responses following anterior temporal-lobe resection that impairs familiarity but spares recollection.

    abstract::Although it is well established that the integrity of the medial temporal lobe (MTL) is critical for declarative memory, the functional organization of the MTL remains a matter of intense debate. One issue that has received little consideration so far is whether the hippocampus can function normally in the presence of...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20800

    authors: Bowles B,O'Neil EB,Mirsattari SM,Poppenk J,Köhler S

    更新日期:2011-08-01 00:00:00

  • Overexpression of the cell adhesion protein neuroligin-1 induces learning deficits and impairs synaptic plasticity by altering the ratio of excitation to inhibition in the hippocampus.

    abstract::Trans-synaptic cell-adhesion molecules have been implicated in regulating CNS synaptogenesis. Among these, the Neuroligin (NL) family (NLs 1-4) of postsynaptic adhesion proteins has been shown to promote the development and specification of excitatory versus inhibitory synapses. NLs form a heterophilic complex with th...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.20630

    authors: Dahlhaus R,Hines RM,Eadie BD,Kannangara TS,Hines DJ,Brown CE,Christie BR,El-Husseini A

    更新日期:2010-02-01 00:00:00

  • Reminders activate the prefrontal-medial temporal cortex and attenuate forgetting of event memory.

    abstract::Replicas of an aspect of an experienced event can serve as effective reminders, yet little is known about the neural basis of such reminding effects. Here we examined the neural activity underlying the memory-enhancing effect of reminders 1 week after encoding of naturalistic film clip events. We used fMRI to determin...

    journal_title:Hippocampus

    pub_type: 杂志文章

    doi:10.1002/hipo.23260

    authors: Sekeres MJ,Moscovitch M,Winocur G,Pishdadian S,Nichol D,Grady CL

    更新日期:2021-01-01 00:00:00