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Martí-Clúa J. Developmental timetables and gradients of neurogenesis in cerebellar Purkinje cells and deep glutamatergic neurons: A comparative study between the mouse and the rat. Anat Rec (Hoboken) 2021; 304:2856-2864. [PMID: 33620144 DOI: 10.1002/ar.24607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2020] [Revised: 10/31/2020] [Accepted: 11/11/2020] [Indexed: 12/20/2022]
Abstract
The aim of this report is to determine whether the times of neuron origin and neurogenetic gradients of PCs and Deep cerebellar nucli (DCN) glutamatergic neurons are different between mice and rats. Purkinje cells (PCs) were analyzed in each compartment of the cerebellar cortex (vermis, paravermis, medial, and lateral hemispheres), and deep glutamatergic neurons at the level of the medialis, interpositus, and lateralis nuclei. Tritiated thymidine ([3 H]TdR) autoradiography was applied on sections. The experimental rodents were the offspring of pregnant dams injected with [3 H]TdR on embryonic days (E) 11-12, E12-13, E13-14, E14-15, E15-16, and E16-17. Our results indicate that systematic differences exist in the pattern of neurogenesis and the spatial location of cerebellar PCs and deep glutamatergic neurons between mice and rats. In mice, PCs and deep glutamatergic neurons neurogenesis extend from E10 to E14, with a predominance of neurogenesis on E12 for PCs, and on E12, E11, and E10 for the medialis, interpositus, and lateralis neurons, respectively. When neurogenesis in rats was considered, the data reveal that PCs and deep glutamatergic neurons production extends from E12 to E16, with a peak of production on E14 for PCs, and on E14, E13, and E12 for the medialis, interpositus, and lateralis neurons, respectively. Current data also indicate that, both in mice and rats, both types of macroneurons are generated according to a lateral-to-medial gradient. Thus, the lateral hemisphere and the lateralis nucleus present more early-generated neurons than the vermis and the medialis nucleus, which in their turn have more late-produced neurons.
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Affiliation(s)
- Joaquín Martí-Clúa
- Unidad de Citología e Histología. Departament de Biologia Cel·lular, de Fisiologia i d'Immunologia. Facultad de Biociencias, Institut de Neurociències. Universidad Autónoma de Barcelona, Bellaterra, Barcelona, Spain
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Gupta A, Padma Srivastava MV. Newer Paradigms in Language Neurobiology. Ann Indian Acad Neurol 2020; 23:S73-S81. [PMID: 33343130 PMCID: PMC7731670 DOI: 10.4103/aian.aian_487_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 11/23/2022] Open
Abstract
The field of language research has seen tremendous progress in the last two decades. Advances in neuro-imaging and stimulation mapping have changed the way we conceive the neural basis of speech and language processing. In the past, the Wernicke-Lichtheim model was the most influential model explaining the neuro-anatomical basis of language. More recently, the concept of dual stream language processing has emerged, wherein separate dorsal and ventral networks are synergistically involved in phonological (sound to articulation) and semantic (sound to meaning) processing respectively. In this review article, we highlight new insights and approaches to the neurobiology of language, across different aspects of language processing like perception, comprehension, production, hemisphere lateralization, role of subcortical structures and effect of damage to language networks.
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Affiliation(s)
- Anu Gupta
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - M V Padma Srivastava
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
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Niego A, Benítez-Burraco A. Autism and Williams syndrome: Dissimilar socio-cognitive profiles with similar patterns of abnormal gene expression in the blood. AUTISM : THE INTERNATIONAL JOURNAL OF RESEARCH AND PRACTICE 2020; 25:464-489. [PMID: 33143449 DOI: 10.1177/1362361320965074] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
LAY ABSTRACT Autism spectrum disorders and Williams syndrome are complex cognitive conditions exhibiting quite opposite features in the social domain: whereas people with autism spectrum disorders are mostly hyposocial, subjects with Williams syndrome are usually reported as hypersocial. At the same time, autism spectrum disorders and Williams syndrome share some common underlying behavioral and cognitive deficits. It is not clear, however, which genes account for the attested differences (and similarities) in the socio-cognitive domain. In this article, we adopted a comparative molecular approach and looked for genes that might be differentially (or similarly) regulated in the blood of people with these conditions. We found a significant overlap between genes dysregulated in the blood of patients compared to neurotypical controls, with most of them being upregulated or, in some cases, downregulated. Still, genes with similar expression trends can exhibit quantitative differences between conditions, with most of them being more dysregulated in Williams syndrome than in autism spectrum disorders. Differentially expressed genes are involved in aspects of brain development and function (particularly dendritogenesis) and are expressed in brain areas (particularly the cerebellum, the thalamus, and the striatum) of relevance for the autism spectrum disorder and the Williams syndrome etiopathogenesis. Overall, these genes emerge as promising candidates for the similarities and differences between the autism spectrum disorder and the Williams syndrome socio-cognitive profiles.
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Martí J, Rodríguez-Vázquez L. An immunocytochemical approach to the analysis of the cell division cycle in the rat cerebellar neuroepithelium. Cell Cycle 2020; 19:2451-2459. [PMID: 32835583 DOI: 10.1080/15384101.2020.1806425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Cerebellar neurons are generated from the rhombic lip and the neuroepithelium. In this study, we analyze the histogenesis of the cerebellar neuroepithelium in terms of cellular kinetics. The experimental animals are the offspring of pregnant dams injected with 5-bromo-2'-deoxyuridine (BrdU) on embryonic day 13. We infer the fraction of S-phase cells by examining a range of survival times after a single BrdU-exposure and a cumulative BrdU-labeling sequence, which allow for the derivation of cell-cycle parameters and phase durations. The current results indicate that the dose of BrdU employed (35 mg/kg) provides saturation S-phase labeling from at least 1 h after marker delivery. The duration of G2, mitotic phase, and G1 are 1.2, 0.5, and 6.9 h, respectively. The duration for the S-phase, growth fraction, and the whole cycle are obtained on the basis of two proliferative models, steady-state and exponential growth. Both models provided similar results. In conclusion, our results indicate that the steady-state and the cumulative S-phase labeling paradigms can be adopted to analyze cell cycle parameters in the cerebellar neuroepithelium. Current results can help in understanding the regulatory mechanisms of cerebellar histogenesis and the cell biological mechanisms of the proliferative cycle of the neuroepithelium.
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Affiliation(s)
- Joaquín Martí
- Unidad de Citología e Histología, Departament de Biologia Cellular, de Fisiologia i d'Immunologia, Facultad de Biociencias, Institut de Neurociències, Universidad Autónoma de Barcelona , Barcelona, Spain
| | - Lucía Rodríguez-Vázquez
- Unidad de Citología e Histología, Departament de Biologia Cellular, de Fisiologia i d'Immunologia, Facultad de Biociencias, Institut de Neurociències, Universidad Autónoma de Barcelona , Barcelona, Spain
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Zhang H, Bao Y, Feng Y, Hu H, Wang Y. Evidence for Reciprocal Structural Network Interactions Between Bilateral Crus Lobes and Broca's Complex. Front Neuroanat 2020; 14:27. [PMID: 32625067 PMCID: PMC7316155 DOI: 10.3389/fnana.2020.00027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 05/05/2020] [Indexed: 11/24/2022] Open
Abstract
While the proximal dentatothalamocortical tracts are considered pivotal in the occurrence of cerebellar mutism syndrome (CMS) after medulloblastoma resection, how the cerebellum participates in motor–speech networks through direct structural connectivity is still unclear. Via tractography, we provide evidence of cerebellar streamlines projecting into the left inferior frontal gyrus majorly connecting Broca’s complex and the bilateral Crus lobes. The streamlines, named Crus–Broca tracts, originated from the bilateral Crus lobes, synapsed onto the dentate nucleus, ascended into the superior cerebellar peduncle (where these streamlines were closely superior to the superior border of the supratonsillar cleft and the superolateral roof of the fourth ventricle), surprisingly bypassed the left red nucleus and the left thalamus, and ended at the subregions of Broca’s complex. The streamlines, named Broca–Crus tracts, originated from the subregions of Broca’s complex and ended predominantly at the right Crus lobes. If verified, the existence of these connections would support the notion of the bilateral cerebellums’ participation in motor–speech planning, and the anatomical relationship of Broca–Crus tracts with the supratonsillar cleft would merit consideration for further studies aimed at further elucidating CMS mechanisms.
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Affiliation(s)
- Hui Zhang
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, China Medical University, Shenyang, China.,Department of Neurosurgery, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Yue Bao
- Department of Neurosurgery, Qingdao Municipal Hospital, School of Medicine, Qingdao University, Qingdao, China
| | - Yuan Feng
- Sleep Medicine Center, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Haijun Hu
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, China Medical University, Shenyang, China
| | - Yibao Wang
- Department of Neurosurgery, The First Affiliated Hospital of China Medical University, China Medical University, Shenyang, China
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Kotov SV, Isakova EV, Zaitseva EV, Egorova YV. [Multimodal stimulation in the neurorehabilitation of patients with poststroke cognitive impairment]. Zh Nevrol Psikhiatr Im S S Korsakova 2020; 120:125-130. [PMID: 32621478 DOI: 10.17116/jnevro2020120051125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Loss of functional activity after a stroke is a leading cause of disability in adults worldwide. Particular attention is currently being paid to post-stroke cognitive impairment. Approaches based on multimodal exposure are increasingly being used when planning rehabilitation programs, which makes it possible to comprehensively cover the entire spectrum of existing neurological disorders in patients and enables to achieve a more effective recovery of functional activity after a stroke.
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Affiliation(s)
- S V Kotov
- Vladimirsky Moscow Regional Clinical Research Institute, Moscow, Russia
| | - E V Isakova
- Vladimirsky Moscow Regional Clinical Research Institute, Moscow, Russia
| | - E V Zaitseva
- Vladimirsky Moscow Regional Clinical Research Institute, Moscow, Russia
| | - Yu V Egorova
- Vladimirsky Moscow Regional Clinical Research Institute, Moscow, Russia
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Ma J, Wu Y, Sun T, Cai L, Fan X, Li X. Neural substrates of bilingual processing in a logographic writing system: An fMRI study in Chinese Cantonese-Mandarin bilinguals. Brain Res 2020; 1738:146794. [DOI: 10.1016/j.brainres.2020.146794] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 02/26/2020] [Accepted: 03/13/2020] [Indexed: 10/24/2022]
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Ica R, Petrut A, Munteanu CVA, Sarbu M, Vukelić Ž, Petrica L, Zamfir AD. Orbitrap mass spectrometry for monitoring the ganglioside pattern in human cerebellum development and aging. JOURNAL OF MASS SPECTROMETRY : JMS 2020; 55:e4502. [PMID: 31961034 DOI: 10.1002/jms.4502] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 06/10/2023]
Abstract
We have developed here a superior approach based on high-resolution (HR) mass spectrometry (MS) for monitoring the changes occurring with development and aging in the composition and structure of cerebellar gangliosidome. The experiments were focused on the comparative screening and structural analysis of gangliosides expressed in fetal and aged cerebellum by Orbitrap MS with nanoelectrospray ionization (nanoESI) in the negative ion mode. The employed ultrahigh-resolution MS platform allowed the discrimination, without the need of previous separation, of 159 ions corresponding to 120 distinct species in the native ganglioside mixtures from fetal and aged cerebellar biopsies, many more than detected before, when MS platforms of lower resolution were employed. A number of gangliosides, in particular polysialylated belonging to GT, GQ, GP, and GS classes, modified by O-fucosylation, O-acetylation, or CH3 COO- were discovered here, for the first time in human cerebellum. These components, found differently expressed in fetal and aged tissues, indicated that the ganglioside profile in cerebellum is development stage- and age-specific. Following the fragmentation analysis by high-energy collision-induced dissociation (HCD) tandem MS (MS/MS), we have also observed that the intimate structure of certain compounds has not changed during the development and aging of the brain, an aspect which could open new directions in the investigation of ganglioside biomarkers in cerebellar tissue.
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Affiliation(s)
- Raluca Ica
- Department of Mass Spectrometry, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
- Faculty of Physics, West University of Timisoara, Timisoara, Romania
| | - Alina Petrut
- Department of Mass Spectrometry, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
| | - Cristian V A Munteanu
- Molecular Cell Biology Department, Institute of Biochemistry of the Romanian Academy, Bucharest, Romania
| | - Mirela Sarbu
- Department of Mass Spectrometry, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
| | - Željka Vukelić
- Department of Chemistry and Biochemistry, University of Zagreb Medical School, Zagreb, Croatia
| | - Ligia Petrica
- Department of Nephrology, "Victor Babes" University of Medicine and Pharmacy, Timisoara, Romania
| | - Alina D Zamfir
- Department of Mass Spectrometry, National Institute for Research and Development in Electrochemistry and Condensed Matter, Timisoara, Romania
- Department for Research, Development, Innovation in Technical and Natural Sciences, "Aurel Vlaicu" University of Arad, Arad, Romania
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Kotov SV, Isakova EV, Zaitseva EV. [Poststroke cognitive impairment and the possibility of its nonpharmacological treatment with vestibular stimulation based on biological feedback to supporting reaction]. Zh Nevrol Psikhiatr Im S S Korsakova 2020; 120:16-22. [PMID: 32307425 DOI: 10.17116/jnevro202012003216] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cognitive impairment is common in poststroke patients. Today in rehabilitation programs the specialists use the vestibular stimulation including biological feedback to supporting reaction for treatment poststroke cognitive impairment. These studies show the relationship of vestibular function with memory, attention, spatial orientation, navigation, mental representation of three-dimensional space and other cognitive functions. It makes possible to build rehabilitation programs for patients with stroke.
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Affiliation(s)
- S V Kotov
- Vladimirsky Moscow Regional Scientific Research Clinical Institute, Moscow, Russia
| | - E V Isakova
- Vladimirsky Moscow Regional Scientific Research Clinical Institute, Moscow, Russia
| | - E V Zaitseva
- Vladimirsky Moscow Regional Scientific Research Clinical Institute, Moscow, Russia
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Association of Sedentary Behavior with Brain Structure and Intelligence in Children with Overweight or Obesity: The ActiveBrains Project. J Clin Med 2020; 9:jcm9041101. [PMID: 32290576 PMCID: PMC7230478 DOI: 10.3390/jcm9041101] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/30/2020] [Accepted: 04/09/2020] [Indexed: 12/11/2022] Open
Abstract
We investigated the associations of different sedentary behaviors (SB) with gray matter volume and we tested whether SB related to gray matter volume is associated with intelligence. Methods: 99 children with overweight or obesity aged 8–11 years participated in this cross-sectional study. SB was measured using the Youth Activity Profile-Spain questionnaire. T1-weighted images were acquired with a 3.0 T Magnetom Tim Trio system. Intelligence was assessed with the Kaufman Brief Test. Whole-brain voxel-wise multiple regression models were used to test the associations of each SB with gray matter volume. Results: Watching TV was associated with lower gray matter volume in six brain regions (β ranging −0.314 to −0.489 and cluster size 106 to 323 voxels; p < 0.001), playing video games in three brain regions (β ranging −0.391 to −0.359, and cluster size 96 to 461 voxels; p < 0.001) and total sedentary time in two brain regions (β ranging −0.341 to −0.352, and cluster size 897 to 2455 voxels; p < 0.001). No brain regions showed a significant positive association (all p > 0.05). Two brain regions were related, or borderline related, to intelligence. Conclusions: SB could have the potential to negatively influence brain structure and, in turn, intelligence in children with overweight/obesity.
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Intracranial pressure, brain morphology and cognitive outcome in children with sagittal craniosynostosis. Childs Nerv Syst 2020; 36:689-695. [PMID: 32016575 DOI: 10.1007/s00381-020-04502-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 01/02/2020] [Indexed: 10/25/2022]
Abstract
BACKGROUND Patients with sagittal craniosynostosis are at increased risk of developing raised intracranial pressure (ICP) and neurocognitive deficiencies such as reduced attention, planning, speech, behavioural and learning disabilities. AIM To determine if the existing literature supports a correlation between elevated ICP and negative cognitive outcome in patients with sagittal craniosynostosis. Secondly, to investigate if the risk of developing neurocognitive deficiencies can be explained by changes in brain morphology in this patient category. METHODS Systematic literature review in PubMed. RESULTS A total of 190 publications were reviewed to determine a possible correlation between raised ICP and cognitive outcome, of which four were included in the study. No significant association was found. Forty-four publications on brain morphology in sagittal craniosynostosis were identified, of which 11 were included in the review. Clear evidence of morphologic changes in multiple areas of the brains of sagittal craniosynostosis patients was found in the literature. CONCLUSION The existing literature does not support an association between increased ICP and negative global cognitive outcome measures in patients with sagittal craniosynostosis. Brain morphology is altered in areas related to neurocognition and language in the same patient group. These changes might play a role in the development of neurocognitive deficiencies, though no definitive link is yet established, and further investigation is warranted.
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Nieto-Ruiz A, Diéguez E, Sepúlveda-Valbuena N, Catena E, Jiménez J, Rodríguez-Palmero M, Catena A, Miranda MT, García-Santos JA, G. Bermúdez M, Campoy C. Influence of a Functional Nutrients-Enriched Infant Formula on Language Development in Healthy Children at Four Years Old. Nutrients 2020; 12:nu12020535. [PMID: 32092927 PMCID: PMC7071497 DOI: 10.3390/nu12020535] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 02/12/2020] [Accepted: 02/15/2020] [Indexed: 12/17/2022] Open
Abstract
Nutrition during early life is essential for brain development and establishes the basis for cognitive and language skills development. It is well established that breastfeeding, compared to formula feeding, has been traditionally associated with increased neurodevelopmental scores up to early adulthood. We analyzed the long-term effects of a new infant formula enriched with bioactive compounds on healthy children's language development at four years old. In a randomized double-blind COGNIS study, 122 children attended the follow-up call at four years. From them, 89 children were fed a standard infant formula (SF, n = 46) or an experimental infant formula enriched with functional nutrients (EF, n = 43) during their first 18 months of life. As a reference group, 33 exclusively breastfed (BF) were included. Language development was assessed using the Oral Language Task of Navarra-Revised (PLON-R). ANCOVA, chi-square test, and logistic regression models were performed. EF children seemed to show higher scores in use of language and oral spontaneous expression than SF children, and both SF and EF groups did not differ from the BF group. Moreover, it seems that SF children were more frequently categorized into "need to improve and delayed" in the use of language than EF children, and might more frequently present "need to improve and delayed" in the PLON-R total score than BF children. Finally, the results suggest that SF children presented a higher risk of suffering language development than BF children. Secondary analysis also showed a slight trend between low socioeconomic status and poorer language skills. The functional compound-enriched infant formula seems to be associated with beneficial long-term effects in the development of child's language at four years old in a similar way to breastfed infants.
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Affiliation(s)
- Ana Nieto-Ruiz
- Department of Paediatrics, School of Medicine, University of Granada, Avda. Investigación 11, 18016 Granada, Spain; (A.N.-R.); (E.D.); (E.C.); (J.A.G.-S.); (M.G.B.)
- EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, University of Granada, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs. GRANADA, Health Sciences Technological Park, 18012 Granada, Spain
- Mind, Brain and Behaviour Research Centre-CIMCYC, University of Granada, 18011 Granada, Spain;
| | - Estefanía Diéguez
- Department of Paediatrics, School of Medicine, University of Granada, Avda. Investigación 11, 18016 Granada, Spain; (A.N.-R.); (E.D.); (E.C.); (J.A.G.-S.); (M.G.B.)
- EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, University of Granada, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs. GRANADA, Health Sciences Technological Park, 18012 Granada, Spain
| | - Natalia Sepúlveda-Valbuena
- EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, University of Granada, 18016 Granada, Spain;
- Nutrition and Biochemistry Department, Faculty of Sciences, Pontificia Universidad Javeriana, Bogotá 110231, Colombia
| | - Elvira Catena
- Department of Paediatrics, School of Medicine, University of Granada, Avda. Investigación 11, 18016 Granada, Spain; (A.N.-R.); (E.D.); (E.C.); (J.A.G.-S.); (M.G.B.)
- Mind, Brain and Behaviour Research Centre-CIMCYC, University of Granada, 18011 Granada, Spain;
| | - Jesús Jiménez
- Ordesa Laboratories, S.L., 08820 Barcelona, Spain; (J.J.); (M.R.-P.)
| | | | - Andrés Catena
- Mind, Brain and Behaviour Research Centre-CIMCYC, University of Granada, 18011 Granada, Spain;
| | - M. Teresa Miranda
- Department of Biostatistics, School of Medicine, University of Granada, 18016 Granada, Spain;
| | - José Antonio García-Santos
- Department of Paediatrics, School of Medicine, University of Granada, Avda. Investigación 11, 18016 Granada, Spain; (A.N.-R.); (E.D.); (E.C.); (J.A.G.-S.); (M.G.B.)
- EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, University of Granada, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs. GRANADA, Health Sciences Technological Park, 18012 Granada, Spain
| | - Mercedes G. Bermúdez
- Department of Paediatrics, School of Medicine, University of Granada, Avda. Investigación 11, 18016 Granada, Spain; (A.N.-R.); (E.D.); (E.C.); (J.A.G.-S.); (M.G.B.)
- EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, University of Granada, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs. GRANADA, Health Sciences Technological Park, 18012 Granada, Spain
| | - Cristina Campoy
- Department of Paediatrics, School of Medicine, University of Granada, Avda. Investigación 11, 18016 Granada, Spain; (A.N.-R.); (E.D.); (E.C.); (J.A.G.-S.); (M.G.B.)
- EURISTIKOS Excellence Centre for Paediatric Research, Biomedical Research Centre, University of Granada, 18016 Granada, Spain;
- Instituto de Investigación Biosanitaria ibs. GRANADA, Health Sciences Technological Park, 18012 Granada, Spain
- Spanish Network of Biomedical Research in Epidemiology and Public Health (CIBERESP), Granada’s node, Institute of Health Carlos III, 28029 Madrid, Spain
- Correspondence: ; Tel.: +34-629-308-695
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From Broca and Wernicke to the Neuromodulation Era: Insights of Brain Language Networks for Neurorehabilitation. Behav Neurol 2019; 2019:9894571. [PMID: 31428210 PMCID: PMC6679886 DOI: 10.1155/2019/9894571] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2019] [Revised: 06/18/2019] [Accepted: 07/05/2019] [Indexed: 12/30/2022] Open
Abstract
Communication in humans activates almost every part of the brain. Of course, the use of language predominates, but other cognitive functions such as attention, memory, emotion, and executive processes are also involved. However, in order to explain how our brain "understands," "speaks," and "writes," and in order to rehabilitate aphasic disorders, neuroscience has faced the challenge for years to reveal the responsible neural networks. Broca and Wernicke (and Lichtheim and many others), during the 19th century, when brain research was mainly observational and autopsy driven, offered fundamental knowledge about the brain and language, so the Wernicke-Geschwind model appeared and aphasiology during the 20th century was based on it. This model is still useful for a first approach into the classical categorization of aphasic syndromes, but it is outdated, because it does not adequately describe the neural networks relevant for language, and it offers a modular perspective, focusing mainly on cortical structures. During the last three decades, neuroscience conquered new imaging, recording, and manipulation techniques for brain research, and a new model of the functional neuroanatomy of language was developed, the dual stream model, consisting of two interacting networks ("streams"), one ventral, bilaterally organized, for language comprehension, and one dorsal, left hemisphere dominant, for production. This new model also has its limitations but helps us to understand, among others, why patients with different brain lesions can have similar language impairments. Furthermore, interesting aspects arise from studying language functions in aging brains (and also in young, developing brains) and in cognitively impaired patients and neuromodulation effects on reorganization of brain networks subserving language. In this selective review, we discuss methods for coupling new knowledge regarding the functional reorganization of the brain with sophisticated techniques capable of activating the available supportive networks in order to provide improved neurorehabilitation strategies for people suffering from neurogenic communication disorders.
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Benítez-Burraco A, Kimura R. Robust Candidates for Language Development and Evolution Are Significantly Dysregulated in the Blood of People With Williams Syndrome. Front Neurosci 2019; 13:258. [PMID: 30971880 PMCID: PMC6444191 DOI: 10.3389/fnins.2019.00258] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 03/05/2019] [Indexed: 01/06/2023] Open
Abstract
Williams syndrome (WS) is a clinical condition, involving cognitive deficits and an uneven language profile, which has been the object of intense inquiry over the last decades. Although WS results from the hemideletion of around two dozen genes in chromosome 7, no gene has yet been probed to account for, or contribute significantly to, the language problems exhibited by the affected people. In this paper we have relied on gene expression profiles in the peripheral blood of WS patients obtained by microarray analysis and show that several robust candidates for language disorders and/or for language evolution in the species, all of them located outside the hemideleted region, are up- or downregulated in the blood of subjects with WS. Most of these genes play a role in the development and function of brain areas involved in language processing, which exhibit structural and functional anomalies in people with this condition. Overall, these genes emerge as robust candidates for language dysfunction in WS.
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Affiliation(s)
- Antonio Benítez-Burraco
- Department of Spanish, Linguistics, and Theory of Literature (Linguistics), Faculty of Philology, University of Seville, Seville, Spain
| | - Ryo Kimura
- Department of Anatomy and Developmental Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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Niego A, Benítez-Burraco A. Williams Syndrome, Human Self-Domestication, and Language Evolution. Front Psychol 2019; 10:521. [PMID: 30936846 PMCID: PMC6431629 DOI: 10.3389/fpsyg.2019.00521] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Accepted: 02/22/2019] [Indexed: 01/06/2023] Open
Abstract
Language evolution resulted from changes in our biology, behavior, and culture. One source of these changes might be human self-domestication. Williams syndrome (WS) is a clinical condition with a clearly defined genetic basis which results in a distinctive behavioral and cognitive profile, including enhanced sociability. In this paper we show evidence that the WS phenotype can be satisfactorily construed as a hyper-domesticated human phenotype, plausibly resulting from the effect of the WS hemideletion on selected candidates for domestication and neural crest (NC) function. Specifically, we show that genes involved in animal domestication and NC development and function are significantly dysregulated in the blood of subjects with WS. We also discuss the consequences of this link between domestication and WS for our current understanding of language evolution.
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Affiliation(s)
- Amy Niego
- Ph.D. Program, Faculty of Humanities, University of Huelva, Huelva, Spain
| | - Antonio Benítez-Burraco
- Department of Spanish, Linguistics, and Theory of Literature, Faculty of Philology, University of Seville, Seville, Spain
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