Frontiers in Neuroanatomy最新文献

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Anterograde trans-neuronal labeling of striatal interneurons in relation to dopamine neurons in the substantia nigra pars compacta 纹状体中间神经元与黑质紧密团多巴胺神经元的前向跨神经元标记
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-28 DOI: 10.3389/fnana.2024.1325368
Fuyuki Karube, Yang Yang, Kenta Kobayashi, Fumino Fujiyama
{"title":"Anterograde trans-neuronal labeling of striatal interneurons in relation to dopamine neurons in the substantia nigra pars compacta","authors":"Fuyuki Karube, Yang Yang, Kenta Kobayashi, Fumino Fujiyama","doi":"10.3389/fnana.2024.1325368","DOIUrl":"https://doi.org/10.3389/fnana.2024.1325368","url":null,"abstract":"Recent advances in neural tracing have unveiled numerous neural circuits characterized by brain region and cell type specificity, illuminating the underpinnings of specific functions and behaviors. Dopaminergic (DA) neurons in the midbrain are highly heterogeneous in terms of gene and protein expression and axonal projections. Different cell types within the substantia nigra pars compacta (SNc) tend to project to the striatum in a cell-type-dependent manner characterized by specific topography. Given the wide and dense distribution of DA axons, coupled with a combination of synaptic and volume transmission, it remains unclear how DA release is spatially and temporally regulated, to appropriately achieve specific behaviors and functions. Our hypothesis posits that hidden rules governing synapse formation between pre-synaptic DA neuron types and striatal neuron types may modulate the effect of DA at a single-cell level. To address this conjecture, we employed adeno-associated virus serotype 1 (AAV1) to visualize the neural circuitry of DA neurons. AAV1 has emerged as a potent anatomical instrument capable of labeling and visualizing pre- and post-synaptic neurons simultaneously through anterograde trans-synaptic labeling. First, AAV1-Cre was injected into the SNc, resulting in Cre expression in both medium spiny neurons and interneurons in the striatum. Due to the potential occurrence of the retrograde transfer of AAV1, only striatal interneurons were considered for trans-synaptic or trans-neuronal labeling. Interneuron types expressing parvalbumin, choline acetyltransferase, somatostatin, or nitrogen oxide synthase exhibited Cre expression. Using a combination of AAV1-Cre and Cre-driven fluorophore expressing AAVs, striatal interneurons and the axons originating from the SNc were visualized in distinct colors. Using immunofluorescence against neurotransmitter transporters, almost all axons in the striatum visualized using this approach were confirmed to be dopaminergic. Moreover, individual DA axons established multiple appositions on the somata and proximal dendrites of interneurons. This finding suggests that irrespective of the extensive and widespread axonal arborization of DA neurons, a particular DA neuron may exert a significant influence on specific interneurons. Thus, AAV1-based labeling of the DA system can be a valuable tool to uncover the concealed rules governing these intricate relationships.","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"3 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140002898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Arterial supply and morphological characteristics of sympathetic neurons in the human superior cervical ganglion 人体颈上神经节交感神经元的动脉供应和形态特征
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-22 DOI: 10.3389/fnana.2024.1372180
Jelena Boljanović, Milan Milisavljević, Milan Latas, Laslo Puškaš, Nikola Bogosavljević, Marko Vujačić, Dejan Aleksandrić, Dejan Ćetković, Nemanja Branković, Aleksandra Dožić, Mila Ćetković
{"title":"Arterial supply and morphological characteristics of sympathetic neurons in the human superior cervical ganglion","authors":"Jelena Boljanović, Milan Milisavljević, Milan Latas, Laslo Puškaš, Nikola Bogosavljević, Marko Vujačić, Dejan Aleksandrić, Dejan Ćetković, Nemanja Branković, Aleksandra Dožić, Mila Ćetković","doi":"10.3389/fnana.2024.1372180","DOIUrl":"https://doi.org/10.3389/fnana.2024.1372180","url":null,"abstract":"<p>The aim of this study was the micromorphological analysis of the distribution of microvessels, mast cells and ganglionic neurons in two parts, proximal and distal of the human superior cervical sympathetic ganglions (SCSGs). Statistical analyses were applied to detect the possible metric regional differences in their densities. Five injected human SCSGs with colored India ink and gelatin were microdissected and examined. Second group of five human SCSGs was prepared and serially sliced for CD34 and mast cell tryptase immunostaining. The microscopic fields of two parts of the SCSGs were analyzed for the following quantifications: microvessel density (MVD), mast cell density (MCD), and ganglionic cell count and measurements. The mean number of CD34-positive microvessels in microscopic fields, the MVD, had a value of 83 for the upper parts, and 82.7 for the lower parts of SCSGs. The mean number of tryptase-positive mast cells in microscopic fields, the MCD, was 4.5 in the proximal parts, and 4.7 in the distal parts of SCSGs. The mean number of ganglionic neurons in microscopic fields was 19.5 in the proximal parts, and 19.8 in the distal parts of SCSGs. The density of CD34-positive microvessels, the density of tryptase-positive mast cells, and the density, mean diameters and mean areas of ganglionic neurons were not significantly different in two observed parts, upper and lower of the SCSGs. In conclusion, the distributions of microvessels, mast cells, and neurons in two parts of the SCSGs were uniform with no specific micromorphological variations, there is a homogenous vascular and cellular pattern within the SCSGs.</p>","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"21 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140045788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial: Subcortical and spinal control of motor networks across vertebrates. 社论:脊椎动物运动网络的皮层下和脊髓控制
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-21 eCollection Date: 2024-01-01 DOI: 10.3389/fnana.2024.1378811
Jean-Luc Boulland, Marie-Claude Perreault
{"title":"Editorial: Subcortical and spinal control of motor networks across vertebrates.","authors":"Jean-Luc Boulland, Marie-Claude Perreault","doi":"10.3389/fnana.2024.1378811","DOIUrl":"10.3389/fnana.2024.1378811","url":null,"abstract":"","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"18 ","pages":"1378811"},"PeriodicalIF":2.9,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10915244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140049220","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Developmental patterns of extracellular matrix molecules in the embryonic and postnatal mouse hindbrain 胚胎和出生后小鼠后脑细胞外基质分子的发育模式
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-16 DOI: 10.3389/fnana.2024.1369103
Ildikó Wéber, Adél Dakos, Zoltán Mészár, Clara Matesz, András Birinyi
{"title":"Developmental patterns of extracellular matrix molecules in the embryonic and postnatal mouse hindbrain","authors":"Ildikó Wéber, Adél Dakos, Zoltán Mészár, Clara Matesz, András Birinyi","doi":"10.3389/fnana.2024.1369103","DOIUrl":"https://doi.org/10.3389/fnana.2024.1369103","url":null,"abstract":"<p>Normal brain development requires continuous communication between developing neurons and their environment filled by a complex network referred to as extracellular matrix (ECM). The ECM is divided into distinct families of molecules including hyaluronic acid, proteoglycans, glycoproteins such as tenascins, and link proteins. In this study, we characterize the temporal and spatial distribution of the extracellular matrix molecules in the embryonic and postnatal mouse hindbrain by using antibodies and lectin histochemistry. In the embryo, hyaluronan and neurocan were found in high amounts until the time of birth whereas versican and tenascin-R were detected in lower intensities during the whole embryonic period. After birth, both hyaluronic acid and neurocan still produced intense staining in almost all areas of the hindbrain, while tenascin-R labeling showed a continuous increase during postnatal development. The reaction with WFA and aggrecan was revealed first 4th postnatal day (P4) with low staining intensities, while HAPLN was detected two weeks after birth (P14). The perineuronal net appeared first around the facial and vestibular neurons at P4 with hyaluronic acid cytochemistry. One week after birth aggrecan, neurocan, tenascin-R, and WFA were also accumulated around the neurons located in several hindbrain nuclei, but HAPLN1 was detected on the second postnatal week. Our results provide further evidence that many extracellular macromolecules that will be incorporated into the perineuronal net are already expressed at embryonic and early postnatal stages of development to control differentiation, migration, and synaptogenesis of neurons. In late postnatal period, the experience-driven neuronal activity induces formation of perineuronal net to stabilize synaptic connections.</p>","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"9 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140002788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Glycine is a transmitter in the human and chimpanzee cochlear nuclei 甘氨酸是人类和黑猩猩耳蜗核的一种递质
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-15 DOI: 10.3389/fnana.2024.1331230
Joan S. Baizer, Chet C. Sherwood, Patrick R. Hof, James F. Baker, Sandra F. Witelson
{"title":"Glycine is a transmitter in the human and chimpanzee cochlear nuclei","authors":"Joan S. Baizer, Chet C. Sherwood, Patrick R. Hof, James F. Baker, Sandra F. Witelson","doi":"10.3389/fnana.2024.1331230","DOIUrl":"https://doi.org/10.3389/fnana.2024.1331230","url":null,"abstract":"IntroductionAuditory information is relayed from the cochlea via the eighth cranial nerve to the dorsal and ventral cochlear nuclei (DCN, VCN). The organization, neurochemistry and circuitry of the cochlear nuclei (CN) have been studied in many species. It is well-established that glycine is an inhibitory transmitter in the CN of rodents and cats, with glycinergic cells in the DCN and VCN. There are, however, major differences in the laminar and cellular organization of the DCN between humans (and other primates) and rodents and cats. We therefore asked whether there might also be differences in glycinergic neurotransmission in the CN.MethodsWe studied brainstem sections from humans, chimpanzees, and cats. We used antibodies to glycine receptors (GLYR) to identify neurons receiving glycinergic input, and antibodies to the neuronal glycine transporter (GLYT2) to immunolabel glycinergic axons and terminals. We also examined archival sections immunostained for calretinin (CR) and nonphosphorylated neurofilament protein (NPNFP) to try to locate the octopus cell area (OCA), a region in the VCN that rodents has minimal glycinergic input.ResultsIn humans and chimpanzees we found widespread immunolabel for glycine receptors in DCN and in the posterior (PVCN) and anterior (AVCN) divisions of the VCN. We found a parallel distribution of GLYT2-immunolabeled fibers and puncta. The data also suggest that, as in rodents, a region containing octopus cells in cats, humans and chimpanzees has little glycinergic input.DiscussionOur results show that glycine is a major transmitter in the human and chimpanzee CN, despite the species differences in DCN organization. The sources of the glycinergic input to the CN in humans and chimpanzees are not known.","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"313 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NeuroEditor: a tool to edit and visualize neuronal morphologies 神经编辑器:编辑和可视化神经元形态的工具
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-14 DOI: 10.3389/fnana.2024.1342762
Ivan Velasco, Juan J. Garcia-Cantero, Juan P. Brito, Sofia Bayona, Luis Pastor, Susana Mata
{"title":"NeuroEditor: a tool to edit and visualize neuronal morphologies","authors":"Ivan Velasco, Juan J. Garcia-Cantero, Juan P. Brito, Sofia Bayona, Luis Pastor, Susana Mata","doi":"10.3389/fnana.2024.1342762","DOIUrl":"https://doi.org/10.3389/fnana.2024.1342762","url":null,"abstract":"The digital extraction of detailed neuronal morphologies from microscopy data is an essential step in the study of neurons. Ever since Cajal’s work, the acquisition and analysis of neuron anatomy has yielded invaluable insight into the nervous system, which has led to our present understanding of many structural and functional aspects of the brain and the nervous system, well beyond the anatomical perspective. Obtaining detailed anatomical data, though, is not a simple task. Despite recent progress, acquiring neuron details still involves using labor-intensive, error prone methods that facilitate the introduction of inaccuracies and mistakes. In consequence, getting reliable morphological tracings usually needs the completion of post-processing steps that require user intervention to ensure the extracted data accuracy. Within this framework, this paper presents NeuroEditor, a new software tool for visualization, editing and correction of previously reconstructed neuronal tracings. This tool has been developed specifically for alleviating the burden associated with the acquisition of detailed morphologies. NeuroEditor offers a set of algorithms that can automatically detect the presence of potential errors in tracings. The tool facilitates users to explore an error with a simple mouse click so that it can be corrected manually or, where applicable, automatically. In some cases, this tool can also propose a set of actions to automatically correct a particular type of error. Additionally, this tool allows users to visualize and compare the original and modified tracings, also providing a 3D mesh that approximates the neuronal membrane. The approximation of this mesh is computed and recomputed on-the-fly, reflecting any instantaneous changes during the tracing process. Moreover, NeuroEditor can be easily extended by users, who can program their own algorithms in Python and run them within the tool. Last, this paper includes an example showing how users can easily define a customized workflow by applying a sequence of editing operations. The edited morphology can then be stored, together with the corresponding 3D mesh that approximates the neuronal membrane.","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"20 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of the neuroprotective efficacy of the gramine derivative ITH12657 against NMDA-induced excitotoxicity in the rat retina 评估禾本科衍生物 ITH12657 对大鼠视网膜 NMDA 诱导的兴奋毒性的神经保护功效
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-13 DOI: 10.3389/fnana.2024.1335176
Johnny Di Pierdomenico, Alejandro Gallego-Ortega, María Norte-Muñoz, Beatriz Vidal-Villegas, Isaac Bravo, María Boluda-Ruiz, Jose Manuel Bernal-Garro, Iván Fernandez-Bueno, Jose Carlos Pastor-Jimeno, María Paz Villegas-Pérez, Marcelino Avilés-Trigueros, Cristobal de los Ríos, Manuel Vidal-Sanz
{"title":"Evaluation of the neuroprotective efficacy of the gramine derivative ITH12657 against NMDA-induced excitotoxicity in the rat retina","authors":"Johnny Di Pierdomenico, Alejandro Gallego-Ortega, María Norte-Muñoz, Beatriz Vidal-Villegas, Isaac Bravo, María Boluda-Ruiz, Jose Manuel Bernal-Garro, Iván Fernandez-Bueno, Jose Carlos Pastor-Jimeno, María Paz Villegas-Pérez, Marcelino Avilés-Trigueros, Cristobal de los Ríos, Manuel Vidal-Sanz","doi":"10.3389/fnana.2024.1335176","DOIUrl":"https://doi.org/10.3389/fnana.2024.1335176","url":null,"abstract":"PurposeThe aim of this study was to investigate, the neuroprotective effects of a new Gramine derivative named: ITH12657, in a model of retinal excitotoxicity induced by intravitreal injection of NMDA.MethodsAdult Sprague Dawley rats received an intravitreal injection of 100 mM NMDA in their left eye and were treated daily with subcutaneous injections of ITH12657 or vehicle. The best dose–response, therapeutic window study, and optimal treatment duration of ITH12657 were studied. Based on the best survival of Brn3a + RGCs obtained from the above-mentioned studies, the protective effects of ITH12657 were studied <jats:italic>in vivo</jats:italic> (retinal thickness and full-field Electroretinography), and <jats:italic>ex vivo</jats:italic> by quantifying the surviving population of Brn3a + RGCs, αRGCs and their subtypes α-ONsRGCs, α-ONtRGCs, and α-OFFRGCs.ResultsAdministration of 10 mg/kg ITH12657, starting 12 h before NMDA injection and dispensed for 3 days, resulted in the best significant protection of Brn3a + RGCs against NMDA-induced excitotoxicity. <jats:italic>In vivo</jats:italic>, ITH12657-treated rats showed significant preservation of retinal thickness and functional protection against NMDA-induced retinal excitotoxicity. <jats:italic>Ex vivo</jats:italic> results showed that ITH12657 afforded a significant protection against NMDA-induced excitotoxicity for the populations of Brn3a + RGC, αRGC, and αONs-RGC, but not for the population of αOFF-RGC, while the population of α-ONtRGC was fully resistant to NMDA-induced excitotoxicity.ConclusionSubcutaneous administration of ITH12657 at 10 mg/kg, initiated 12 h before NMDA-induced retinal injury and continued for 3 days, resulted in the best protection of Brn3a + RGCs, αRGC, and αONs-RGC against excitotoxicity-induced RGC death. The population of αOFF-RGCs was extremely sensitive while α-ONtRGCs were fully resistant to NMDA-induced excitotoxicity.","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"1 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distribution of calcium-binding proteins immunoreactivity in the bottlenose dolphin entorhinal cortex 钙结合蛋白免疫活性在瓶鼻海豚内侧皮层中的分布
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-02-05 DOI: 10.3389/fnana.2024.1321025
Jean-Marie Graïc, Annamaria Grandis, Simona Sacchini, Claudio Tagliavia, Giulia Salamanca, Bruno Cozzi, Cristiano Bombardi
{"title":"Distribution of calcium-binding proteins immunoreactivity in the bottlenose dolphin entorhinal cortex","authors":"Jean-Marie Graïc, Annamaria Grandis, Simona Sacchini, Claudio Tagliavia, Giulia Salamanca, Bruno Cozzi, Cristiano Bombardi","doi":"10.3389/fnana.2024.1321025","DOIUrl":"https://doi.org/10.3389/fnana.2024.1321025","url":null,"abstract":"IntroductionThe entorhinal cortex has been shown to be involved in high-level cognitive functions in terrestrial mammals. It can be divided into two main areas: the lateral entorhinal area (LEA) and the medial entorhinal area (MEA). Understanding of its structural organization in cetaceans is particularly important given the extensive evidence for their cognitive abilities. The present study describes the cytoarchitectural and immunohistochemical properties of the entorhinal cortex of the bottlenose dolphin (&lt;jats:italic&gt;Tursiops truncatus&lt;/jats:italic&gt;, Montagu, 1821), perhaps the most studied cetacean species and a paradigm for dolphins and other small cetaceans.MethodsFour bottlenose dolphins’ entorhinal cortices were processed. To obtain a precise overview of the organization of the entorhinal cortex we used thionin staining to study its laminar and regional organization, and immunoperoxidase technique to investigate the immunohistochemical distribution of three most commonly used calcium-binding proteins (CBPs), calbindin D-28k (CB), calretinin (CR) and parvalbumin (PV). Entorhinal cortex layers thickness were measured, morphological and morphometric analysis for each layer were conducted and statistically compared.ResultsSix layers in both the LEA and MEA were identified. The main difference between the LEA and the MEA is observed in layers II and III: the neurons in layer II of the LEA were denser and larger than the neurons in layer II of MEA. In addition, a relatively cell-free zone between layers II and III in LEA, but not in MEA, was observed. The immunohistochemical distribution of the three CBPs, CB, CR and PV were distinct in each layer. The immunostaining pattern of CR, on one side, and CB/PV, on the other side, appeared to be distributed in a complementary manner. PV and CB immunostaining was particularly evident in layers II and III, whereas CR immunoreactive neurons were distributed throughout all layers, especially in layers V and VI. Immunoreactivity was expressed by neurons belonging to different morphological classes: All CBPs were expressed in non-pyramidal neurons, but CB and CR were also found in pyramidal neurons.DiscussionThe morphological characteristics of pyramidal and non-pyramidal neurons in the dolphin entorhinal cortex are similar to those described in the entorhinal cortex of other species, including primates and rodents. Interestingly, in primates, rodents, and dolphins, most of the CBP-containing neurons are found in the superficial layers, but the large CR-ir neurons are also abundant in the deep layers. Layers II and III of the entorhinal cortex contain neurons that give rise to the perforant pathway, which conveys most of the cortical information to the hippocampal formation. From the hippocampal formation, reciprocal projections are directed back to the deep layer of the entorhinal cortex, which distributes the information to the neocortex and subcortical area. Our data reveal that in the dolphin entorhina","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"32 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139768472","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cajal, the neuronal theory and the idea of brain plasticity 卡哈尔、神经元理论和大脑可塑性思想
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-01-17 DOI: 10.3389/fnana.2024.1331666
Jairo A. Rozo, Irene Martínez-Gallego, Antonio Rodríguez-Moreno
{"title":"Cajal, the neuronal theory and the idea of brain plasticity","authors":"Jairo A. Rozo, Irene Martínez-Gallego, Antonio Rodríguez-Moreno","doi":"10.3389/fnana.2024.1331666","DOIUrl":"https://doi.org/10.3389/fnana.2024.1331666","url":null,"abstract":"<p>This paper reviews the importance of Cajal’s neuronal theory (the Neuron Doctrine) and the origin and importance of the idea of brain plasticity that emerges from this theory. We first comment on the main Cajal’s discoveries that gave rise and confirmed his Neuron Doctrine: the improvement of staining techniques, his approach to morphological laws, the concepts of dynamic polarisation, neurogenesis and neurotrophic theory, his first discoveries of the nerve cell as an independent cell, his research on degeneration and regeneration and his fight against reticularism. Second, we review Cajal’s ideas on brain plasticity and the years in which they were published, to finally focus on the debate on the origin of the term plasticity and its conceptual meaning, and the originality of Cajal’s proposal compared to those of other authors of the time.</p>","PeriodicalId":12572,"journal":{"name":"Frontiers in Neuroanatomy","volume":"232 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2024-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139902249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Domingo Sánchez y Sánchez (1860–1947): Cajal’s man on the nervous system of invertebrates 多明戈-桑切斯(Domingo Sánchez y Sánchez,1860-1947 年):卡哈尔研究无脊椎动物神经系统的人
IF 2.9 4区 医学
Frontiers in Neuroanatomy Pub Date : 2024-01-09 DOI: 10.3389/fnana.2023.1330452
Adela Serrano-Herrera, Juan Manuel Espinosa-Sanchez
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