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Steinemer A, Simon A, Güntürkün O, Rook N. Parallel executive pallio-motor loops in the pigeon brain. J Comp Neurol 2024; 532:e25611. [PMID: 38625816 DOI: 10.1002/cne.25611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 03/08/2024] [Accepted: 03/24/2024] [Indexed: 04/18/2024]
Abstract
A core component of the avian pallial cognitive network is the multimodal nidopallium caudolaterale (NCL) that is considered to be analogous to the mammalian prefrontal cortex (PFC). The NCL plays a key role in a multitude of executive tasks such as working memory, decision-making during navigation, and extinction learning in complex learning environments. Like the PFC, the NCL is positioned at the transition from ascending sensory to descending motor systems. For the latter, it sends descending premotor projections to the intermediate arcopallium (AI) and the medial striatum (MSt). To gain detailed insight into the organization of these projections, we conducted several retrograde and anterograde tracing experiments. First, we tested whether NCL neurons projecting to AI (NCLarco neurons) and MSt (NCLMSt neurons) are constituted by a single neuronal population with bifurcating neurons, or whether they form two distinct populations. Here, we found two distinct projection patterns to both target areas that were associated with different morphologies. Second, we revealed a weak topographic projection toward the medial and lateral striatum and a strong topographic projection toward AI with clearly distinguishable sensory termination fields. Third, we investigated the relationship between the descending NCL pathways to the arcopallium with those from the hyperpallium apicale, which harbors a second major descending pathway of the avian pallium. We embed our findings within a system of parallel pallio-motor loops that carry information from separate sensory modalities to different subpallial systems. Our results also provide insights into the evolution of the avian motor system from which, possibly, the song system has emerged.
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Affiliation(s)
- Alina Steinemer
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Annika Simon
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Onur Güntürkün
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Noemi Rook
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
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Zhang J, Zhao R, Lin S, Yang D, Lu S, Liu Z, Gao Y, Zhang Y, Hou B, Xi C, Liu J, Bing J, Pang E, Lin K, Zeng S. Comparison of genes involved in brain development: insights into the organization and evolution of the telencephalic pallium. Sci Rep 2024; 14:6102. [PMID: 38480729 PMCID: PMC10937912 DOI: 10.1038/s41598-024-51964-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Accepted: 01/11/2024] [Indexed: 03/17/2024] Open
Abstract
The mechanisms underlying the organization and evolution of the telencephalic pallium are not yet clear.. To address this issue, we first performed comparative analysis of genes critical for the development of the pallium (Emx1/2 and Pax6) and subpallium (Dlx2 and Nkx1/2) among 500 vertebrate species. We found that these genes have no obvious variations in chromosomal duplication/loss, gene locus synteny or Darwinian selection. However, there is an additional fragment of approximately 20 amino acids in mammalian Emx1 and a poly-(Ala)6-7 in Emx2. Lentiviruses expressing mouse or chick Emx2 (m-Emx2 or c-Emx2 Lv) were injected into the ventricle of the chick telencephalon at embryonic Day 3 (E3), and the embryos were allowed to develop to E12-14 or to posthatchling. After transfection with m-Emx2 Lv, the cells expressing Reelin, Vimentin or GABA increased, and neurogenesis of calbindin cells changed towards the mammalian inside-out pattern in the dorsal pallium and mesopallium. In addition, a behavior test for posthatched chicks indicated that the passive avoidance ratio increased significantly. The study suggests that the acquisition of an additional fragment in mammalian Emx2 is associated with the organization and evolution of the mammalian pallium.
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Affiliation(s)
- Jiangyan Zhang
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Rui Zhao
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Shiying Lin
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Dong Yang
- Beijing Key Laboratory of Genetic Engineering Drugs and Biological Technology, Beijing Normal University, Beijing, China
| | - Shan Lu
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Zenan Liu
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Yuanyuan Gao
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Yiyun Zhang
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Bing Hou
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Chao Xi
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Jin Liu
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Jie Bing
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China
| | - Erli Pang
- MOE Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, China
| | - Kui Lin
- MOE Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, China.
| | - Shaoju Zeng
- Beijing Key Laboratory of Gene Resource and Molecular Development, Beijing Normal University, Beijing, China.
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Pross A, Metwalli AH, Abellán A, Desfilis E, Medina L. Subpopulations of corticotropin-releasing factor containing neurons and internal circuits in the chicken central extended amygdala. J Comp Neurol 2024; 532:e25569. [PMID: 38104270 DOI: 10.1002/cne.25569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 10/18/2023] [Accepted: 11/24/2023] [Indexed: 12/19/2023]
Abstract
In mammals, the central extended amygdala is critical for the regulation of the stress response. This regulation is extremely complex, involving multiple subpopulations of GABAergic neurons and complex networks of internal and external connections. Two neuron subpopulations expressing corticotropin-releasing factor (CRF), located in the central amygdala and the lateral bed nucleus of the stria terminalis (BSTL), play a key role in the long-term component of fear learning and in sustained fear responses akin to anxiety. Very little is known about the regulation of stress by the amygdala in nonmammals, hindering efforts for trying to improve animal welfare. In birds, one of the major problems relates to the high evolutionary divergence of the telencephalon, where the amygdala is located. In the present study, we aimed to investigate the presence of CRF neurons of the central extended amygdala in chicken and the local connections within this region. We found two major subpopulations of CRF cells in BSTL and the medial capsular central amygdala of chicken. Based on multiple labeling of CRF mRNA with different developmental transcription factors, all CRF neurons seem to originate within the telencephalon since they express Foxg1, and there are two subtypes with different embryonic origins that express Islet1 or Pax6. In addition, we demonstrated direct projections from Pax6 cells of the capsular central amygdala to BSTL and the oval central amygdala. We also found projections from Islet1 cells of the oval central amygdala to BSTL, which may constitute an indirect pathway for the regulation of BSTL output cells. Part of these projections may be mediated by CRF cells, in agreement with the expression of CRF receptors in both Ceov and BSTL. Our results show a complex organization of the central extended amygdala in chicken and open new venues for studying how different cells and circuits regulate stress in these animals.
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Affiliation(s)
- Alessandra Pross
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Alek H Metwalli
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Antonio Abellán
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Ester Desfilis
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Loreta Medina
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
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Puelles L, Stühmer T, Rubenstein JLR, Diaz C. Critical test of the assumption that the hypothalamic entopeduncular nucleus of rodents is homologous with the primate internal pallidum. J Comp Neurol 2023; 531:1715-1750. [PMID: 37695031 DOI: 10.1002/cne.25536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/26/2023] [Accepted: 08/03/2023] [Indexed: 09/12/2023]
Abstract
The globus pallidus (GP) of primates is divided conventionally into distinct internal and external parts. The literature repeats since 1930 the opinion that the homolog of the primate internal pallidum in rodents is the hypothalamic entopeduncular nucleus (embedded within fiber tracts of the cerebral peduncle). To test this idea, we explored its historic fundaments, checked the development and genoarchitecture of mouse entopeduncular and pallidal neurons, and examined relevant comparative connectivity data. We found that the extratelencephalic mouse entopeduncular structure consists of four different components arrayed along a dorsoventral sequence in the alar hypothalamus. The ventral entopeduncular nucleus (EPV), with GABAergic neurons expressing Dlx5&6 and Nkx2-1, lies within the hypothalamic peduncular subparaventricular area. Three other formations-the dorsal entopeduncular nucleus (EPD), the prereticular entopeduncular nucleus (EPPRt ), and the preeminential entopeduncular nucleus (EPPEm )-lie within the overlying paraventricular area, under the subpallium. EPD contains glutamatergic neurons expressing Tbr1, Otp, and Pax6. The EPPRt has GABAergic cells expressing Isl1 and Meis2, whereas the EPPEm population expresses Foxg1 and may be glutamatergic. Genoarchitectonic observations on relevant areas of the mouse pallidal/diagonal subpallium suggest that the GP of rodents is constituted as in primates by two adjacent but molecularly and hodologically differentiable telencephalic portions (both expressing Foxg1). These and other reported data oppose the notion that the rodent extratelencephalic entopeduncular nucleus is homologous to the primate internal pallidum. We suggest instead that all mammals, including rodents, have dual subpallial GP components, whereas primates probably also have a comparable set of hypothalamic entopeduncular nuclei. Remarkably, there is close similarity in some gene expression properties of the telencephalic internal GP and the hypothalamic EPV. This apparently underlies their notable functional analogy, sharing GABAergic neurons and thalamopetal connectivity.
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Affiliation(s)
- Luis Puelles
- Department of Human Anatomy and Psychobiology and IMIB-Arrixaca Institute, University of Murcia, Murcia, Spain
| | - Thorsten Stühmer
- Nina Ireland Laboratory of Developmental Neurobiology, Department of Psychiatry, UCSF Medical School, San Francisco, California, USA
| | - John L R Rubenstein
- Nina Ireland Laboratory of Developmental Neurobiology, Department of Psychiatry, UCSF Medical School, San Francisco, California, USA
| | - Carmen Diaz
- School of Medicine and Institute for Research in Neurological Disabilities, University of Castilla-La Mancha, Albacete, Spain
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Finszter CK, Kemecsei R, Zachar G, Holtkamp S, Echevarría D, Adorján I, Ádám Á, Csillag A. Early cellular and synaptic changes in dopaminoceptive forebrain regions of juvenile mice following gestational exposure to valproate. Front Neuroanat 2023; 17:1235047. [PMID: 37603782 PMCID: PMC10435871 DOI: 10.3389/fnana.2023.1235047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 07/19/2023] [Indexed: 08/23/2023] Open
Abstract
Gestational exposure of mice to valproic acid (VPA) is one currently used experimental model for the investigation of typical failure symptoms associated with autism spectrum disorder (ASD). In the present study we hypothesized that the reduction of dopaminergic source neurons of the VTA, followed by perturbed growth of the mesotelencephalic dopamine pathway (MT), should also modify pattern formation in the dopaminoceptive target regions (particularly its mesoaccumbens/mesolimbic portion). Here, we investigated VPA-evoked cellular morphological (apoptosis-frequency detected by Caspase-3, abundance of Ca-binding proteins, CaBP), as well as synaptic proteomic (western blotting) changes, in selected dopaminoceptive subpallial, as compared to pallial, regions of mice, born to mothers treated with 500 mg/kg VPA on day 13.5 of pregnancy. We observed a surge of apoptosis on VPA treatment in nearly all investigated subpallial and pallial regions; with a non-significant trend of similar increase the nucleus accumbens (NAc) at P7, the age at which the MT pathway reduction has been reported (also supplemented by current findings). Of the CaBPs, calretinin (CR) expression was decreased in pallial regions, most prominently in retrosplenial cortex, but not in the subpallium of P7 mice. Calbindin-D 28K (CB) was selectively reduced in the caudate-putamen (CPu) of VPA exposed animals at P7 but no longer at P60, pointing to a potency of repairment. The VPA-associated overall increase in apoptosis at P7 did not correlate with the abundance and distribution of CaBPs, except in CPu, in which the marked drop of CB was negatively correlated with increased apoptosis. Abundance of parvalbumin (PV) at P60 showed no significant response to VPA treatment in any of the observed regions we did not find colocalization of apoptotic (Casp3+) cells with CaBP-immunoreactive neurons. The proteomic findings suggest reduction of tyrosine hydroxylase in the crude synaptosome fraction of NAc, but not in the CPu, without simultaneous decrease of the synaptic protein, synaptophysin, indicating selective impairment of dopaminergic synapses. The morpho-functional changes found in forebrain regions of VPA-exposed mice may signify dendritic and synaptic reorganization in dopaminergic target regions, with potential translational value to similar impairments in the pathogenesis of human ASD.
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Affiliation(s)
- Cintia Klaudia Finszter
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Róbert Kemecsei
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Gergely Zachar
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Sophie Holtkamp
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Diego Echevarría
- Institute of Neuroscience (UMH-CSIC), University of Miguel Hernández, Alicante, Spain
| | - István Adorján
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Ágota Ádám
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - András Csillag
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, Budapest, Hungary
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Metwalli AH, Pross A, Desfilis E, Abellán A, Medina L. Mapping of corticotropin-releasing factor, receptors, and binding protein mRNA in the chicken telencephalon throughout development. J Comp Neurol 2023. [PMID: 37393534 DOI: 10.1002/cne.25517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/11/2023] [Accepted: 06/10/2023] [Indexed: 07/03/2023]
Abstract
Understanding the neural mechanisms that regulate the stress response is critical to know how animals adapt to a changing world and is one of the key factors to be considered for improving animal welfare. Corticotropin-releasing factor (CRF) is crucial for regulating physiological and endocrine responses, triggering the activation of the sympathetic nervous system and the hypothalamo-pituitary-adrenal axis (HPA) during stress. In mammals, several telencephalic areas, such as the amygdala and the hippocampus, regulate the autonomic system and the HPA responses. These centers include subpopulations of CRF containing neurons that, by way of CRF receptors, play modulatory roles in the emotional and cognitive aspects of stress. CRF binding protein also plays a role, buffering extracellular CRF and regulating its availability. CRF role in activation of the HPA is evolutionary conserved in vertebrates, highlighting the relevance of this system to help animals cope with adversity. However, knowledge on CRF systems in the avian telencephalon is very limited, and no information exists on detailed expression of CRF receptors and binding protein. Knowing that the stress response changes with age, with important variations during the first week posthatching, the aim of this study was to analyze mRNA expression of CRF, CRF receptors 1 and 2, and CRF binding protein in chicken telencephalon throughout embryonic and early posthatching development, using in situ hybridization. Our results demonstrate an early expression of CRF and its receptors in pallial areas regulating sensory processing, sensorimotor integration and cognition, and a late expression in subpallial areas regulating the stress response. However, CRF buffering system develops earlier in the subpallium than in the pallium. These results help to understand the mechanisms underlying the negative effects of noise and light during prehatching stages in chicken, and suggest that stress regulation becomes more sophisticated with age.
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Affiliation(s)
- Alek H Metwalli
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Catalonia, Spain
| | - Alessandra Pross
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Catalonia, Spain
| | - Ester Desfilis
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Catalonia, Spain
| | - Antonio Abellán
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Catalonia, Spain
| | - Loreta Medina
- Department of Experimental Medicine, Universitat de Lleida, Lleida, Spain
- Laboratory of Evolutionary and Developmental Neurobiology, Lleida's Institute for Biomedical Research-Dr. Pifarré Foundation (IRBLleida), Lleida, Catalonia, Spain
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Tripson M, Litwa K, Soderstrom K. Cannabidiol inhibits neuroinflammatory responses and circuit-associated synaptic loss following damage to a songbird vocal pre-motor cortical-like region. Sci Rep 2023; 13:7907. [PMID: 37193782 DOI: 10.1038/s41598-023-34924-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 05/10/2023] [Indexed: 05/18/2023] Open
Abstract
The non-euphorigenic phytocannabinoid cannabidiol (CBD) has been used successfully to treat childhood-onset epilepsies. These conditions are associated with developmental delays that often include vocal learning. Zebra finch song, like language, is a complex behavior learned during a sensitive period of development. Song quality is maintained through continuous sensorimotor refinement involving circuits that control learning and production. Within the vocal motor circuit, HVC is a cortical-like region that when partially lesioned temporarily disrupts song structure. We previously found CBD (10 mg/kg/day) improves post-lesion vocal recovery. The present studies were done to begin to understand mechanisms possibly responsible for CBD vocal protection. We found CBD markedly reduced expression of inflammatory mediators and oxidative stress markers. These effects were associated with regionally-reduced expression of the microglial marker TMEM119. As microglia are key regulators of synaptic reorganization, we measured synapse densities, finding significant lesion-induced circuit-wide decreases that were largely reversed by CBD. Synaptic protection was accompanied by NRF2 activation and BDNF/ARC/ARG3.1/MSK1 expression implicating mechanisms important to song circuit node mitigation of oxidative stress and promotion of synaptic homeostasis. Our findings demonstrate that CBD promotes an array of neuroprotective processes consistent with modulation of multiple cell signaling systems, and suggest these mechanisms are important to post-lesion recovery of a complex learned behavior.
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Affiliation(s)
- Mark Tripson
- Department of Pharmacology and Toxicology, Brody School of Medicine at East Carolina University, Greenville, NC, 27834, USA
| | - Karen Litwa
- Department of Anatomy and Cell Biology, Brody School of Medicine, East Carolina Diabetes and Obesity Institute, East Carolina University, Greenville, NC, 27834, USA
| | - Ken Soderstrom
- Department of Pharmacology and Toxicology, Brody School of Medicine at East Carolina University, Greenville, NC, 27834, USA.
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Aldhafiri A, Dodu JC, Alalawi A, Soderstrom K. Developmental treatments with Δ 9- tetrahydrocannabinol and the MAGL inhibitor JZL184 persistently alter adult cocaine conditioning in contrasting ways. Pharmacol Biochem Behav 2023; 223:173524. [PMID: 36740023 DOI: 10.1016/j.pbb.2023.173524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 01/27/2023] [Accepted: 01/31/2023] [Indexed: 02/07/2023]
Abstract
Using a songbird, zebra finches, as a developmental drug abuse model we found previously that cannabinoid agonists administered during the sensorimotor period of vocal learning (50-75 days of age) persistently alter song patterns and cocaine responsiveness in adulthood. However, these effects were not produced in adults exposed to similar treatment regimens. Currently, we have used the MAGL inhibitor, JZL184, to test whether enhanced endocannabinoid signaling may similarly alter cocaine responsiveness. We found that, as expected and consistent with prior results, repeated developmental (but not adult) treatments with Δ9-tetrahydrocannabinol (THC, 3 mg/kg QD IM) resulted in increased time spent in cocaine-paired chambers. Unexpectedly and in contrast, repeated developmental JZL184 (4 mg/kg QD IM) treatments decreased time spent in cocaine-conditioned chambers. That is, young finches repeatedly treated with JZL184 avoided cocaine-paired chambers later in adulthood, while similar development treatments with THC had the opposite effect. To begin to identify brain regions that may underly this differential responsiveness we used c-Fos expression as a marker of neuronal activity. Differences in c-Fos expression patterns following placement of cocaine-conditioned finches into vehicle- vs. cocaine-paired chambers suggest distinct involvement of circuits through striatal and amygdaloid regions in respective effects of THC and JZL184. Results demonstrate that, like exogenous cannabinoid exposure, inhibition of MAGL activity during late post-natal development persistently alters behavior in adulthood. Contrasting effects of THC vs. MAGL inhibition with JZL184 suggests the latter alters development of brain regions to favor promotion of aversive rather than appetitive cocaine responsiveness later in adulthood.
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Affiliation(s)
- Ahmed Aldhafiri
- Department of Pharmacology and Toxicology, The Brody School of Medicine at East Carolina University, Greenville, NC 27834, United States of America
| | - Julien C Dodu
- Department of Pharmacology and Toxicology, The Brody School of Medicine at East Carolina University, Greenville, NC 27834, United States of America
| | - Ali Alalawi
- Department of Pharmacology and Toxicology, The Brody School of Medicine at East Carolina University, Greenville, NC 27834, United States of America
| | - Ken Soderstrom
- Department of Pharmacology and Toxicology, The Brody School of Medicine at East Carolina University, Greenville, NC 27834, United States of America.
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Pross A, Metwalli AH, Desfilis E, Medina L. Developmental-Based Classification of Enkephalin and Somatostatin Containing Neurons of the Chicken Central Extended Amygdala. Front Physiol 2022; 13:904520. [PMID: 35694397 PMCID: PMC9174674 DOI: 10.3389/fphys.2022.904520] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 04/22/2022] [Indexed: 11/13/2022] Open
Abstract
The central extended amygdala, including the lateral bed nucleus of the stria terminalis and the central amygdala, plays a key role in stress response. To understand how the central extended amygdala regulates stress it is essential to dissect this structure at molecular, cellular and circuit levels. In mammals, the central amygdala contains two distinct cell populations that become active (on cells) or inactive (off cells) during the conditioned fear response. These two cell types inhibit each other and project mainly unidirectionally to output cells, thus providing a sophisticated regulation of stress. These two cell types express either protein kinase C-delta/enkephalin or somatostatin, and were suggested to originate in different embryonic domains of the subpallium that respectively express the transcription factors Pax6 or Nkx2.1 during development. The regulation of the stress response by the central extended amygdala is poorly studied in non-mammals. Using an evolutionary developmental neurobiology approach, we previously identified several subdivisions in the central extended amygdala of chicken. These contain Pax6, Islet1 and Nkx2.1 cells that originate in dorsal striatal, ventral striatal or pallidopreoptic embryonic divisions, and also contain neurons expressing enkephalin and somatostatin. To know the origin of these cells, in this study we carried out multiple fluorescent labeling to analyze coexpression of different transcription factors with enkephalin or somatostatin. We found that many enkephalin cells coexpress Pax6 and likely derive from the dorsal striatal division, resembling the off cells of the mouse central amygdala. In contrast, most somatostatin cells coexpress Nkx2.1 and derive from the pallidal division, resembling the on cells. We also found coexpression of enkephalin and somatostatin with other transcription factors. Our results show the existence of multiple cell types in the central extended amygdala of chicken, perhaps including on/off cell systems, and set the basis for studying the role of these cells in stress regulation.
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Affiliation(s)
- Alessandra Pross
- Department of Experimental Medicine. University of Lleida, Lleida, Spain
- Lleida’s Institute for Biomedical Research—Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Alek H. Metwalli
- Department of Experimental Medicine. University of Lleida, Lleida, Spain
- Lleida’s Institute for Biomedical Research—Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Ester Desfilis
- Department of Experimental Medicine. University of Lleida, Lleida, Spain
- Lleida’s Institute for Biomedical Research—Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Loreta Medina
- Department of Experimental Medicine. University of Lleida, Lleida, Spain
- Lleida’s Institute for Biomedical Research—Dr. Pifarré Foundation (IRBLleida), Lleida, Spain
- *Correspondence: Loreta Medina,
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Shang W, Dai Z, Zhang J, Shen F, Sui N, Liang J. Embryonic opioid exposure impairs inhibitory transmission of striatum in day‐old chicks. Dev Psychobiol 2022; 64:e22273. [DOI: 10.1002/dev.22273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 03/05/2022] [Accepted: 03/13/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Wen Shang
- CAS Key Laboratory of Mental Health Institute of Psychology Beijing China
- Department of Psychology University of Chinese Academy of Sciences Beijing China
| | - Zhonghua Dai
- CAS Key Laboratory of Mental Health Institute of Psychology Beijing China
- Department of Psychology University of Chinese Academy of Sciences Beijing China
| | - Jianjun Zhang
- CAS Key Laboratory of Mental Health Institute of Psychology Beijing China
- Department of Psychology University of Chinese Academy of Sciences Beijing China
| | - Fang Shen
- CAS Key Laboratory of Mental Health Institute of Psychology Beijing China
- Department of Psychology University of Chinese Academy of Sciences Beijing China
| | - Nan Sui
- CAS Key Laboratory of Mental Health Institute of Psychology Beijing China
- Department of Psychology University of Chinese Academy of Sciences Beijing China
| | - Jing Liang
- CAS Key Laboratory of Mental Health Institute of Psychology Beijing China
- Department of Psychology University of Chinese Academy of Sciences Beijing China
- Sino‐Danish Center for Education and Research University of Chinese Academy of Sciences Beijing China
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Smulders TV. Telencephalic regulation of the HPA axis in birds. Neurobiol Stress 2021; 15:100351. [PMID: 34189191 PMCID: PMC8220096 DOI: 10.1016/j.ynstr.2021.100351] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/26/2021] [Accepted: 06/03/2021] [Indexed: 12/21/2022] Open
Abstract
The hypothalamo-pituitary-adrenal (HPA) axis is one of the major output systems of the vertebrate stress response. It controls the release of cortisol or corticosterone from the adrenal gland. These hormones regulate a range of processes throughout the brain and body, with the main function of mobilizing energy reserves to improve coping with a stressful situation. This axis is regulated in response to both physical (e.g., osmotic) and psychological (e.g., social) stressors. In mammals, the telencephalon plays an important role in the regulation of the HPA axis response in particular to psychological stressors, with the amygdala and part of prefrontal cortex stimulating the stress response, and the hippocampus and another part of prefrontal cortex inhibiting the response to return it to baseline. Birds also mount HPA axis responses to psychological stressors, but much less is known about the telencephalic areas that control this response. This review summarizes which telencephalic areas in birds are connected to the HPA axis and are known to respond to stressful situations. The conclusion is that the telencephalic control of the HPA axis is probably an ancient system that dates from before the split between sauropsid and synapsid reptiles, but more research is needed into the functional relationships between the brain areas reviewed in birds if we want to understand the level of this conservation.
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Affiliation(s)
- Tom V. Smulders
- Centre for Behaviour & Evolution, Biosciences Institute, Newcastle University, Newcastle Upon Tyne, UK
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12
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Bohler MW, Chowdhury VS, Cline MA, Gilbert ER. Heat Stress Responses in Birds: A Review of the Neural Components. BIOLOGY 2021; 10:biology10111095. [PMID: 34827087 PMCID: PMC8614992 DOI: 10.3390/biology10111095] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/15/2021] [Accepted: 10/20/2021] [Indexed: 12/26/2022]
Abstract
Heat stress is one of the major environmental conditions causing significant losses in the poultry industry and having negative impacts on the world's food economy. Heat exposure causes several physiological impairments in birds, including oxidative stress, weight loss, immunosuppression, and dysregulated metabolism. Collectively, these lead not only to decreased production in the meat industry, but also decreases in the number of eggs laid by 20%, and overall loss due to mortality during housing and transit. Mitigation techniques have been discussed in depth, and include changes in air flow and dietary composition, improved building insulation, use of air cooling in livestock buildings (fogging systems, evaporation panels), and genetic alterations. Most commonly observed during heat exposure are reduced food intake and an increase in the stress response. However, very little has been explored regarding heat exposure, food intake and stress, and how the neural circuitry responsible for sensing temperatures mediate these responses. That thermoregulation, food intake, and the stress response are primarily mediated by the hypothalamus make it reasonable to assume that it is the central hub at which these systems interact and coordinately regulate downstream changes in metabolism. Thus, this review discusses the neural circuitry in birds associated with thermoregulation, food intake, and stress response at the level of the hypothalamus, with a focus on how these systems might interact in the presence of heat exposure.
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Affiliation(s)
- Mark W. Bohler
- Department of Animal and Poultry Sciences, 2160 Litton-Reaves Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (M.W.B.); (M.A.C.)
| | - Vishwajit S. Chowdhury
- Laboratory of Stress Physiology and Metabolism, Faculty of Arts and Science, Kyushu University, Fukuoka 819-0395, Japan;
| | - Mark A. Cline
- Department of Animal and Poultry Sciences, 2160 Litton-Reaves Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (M.W.B.); (M.A.C.)
| | - Elizabeth R. Gilbert
- Department of Animal and Poultry Sciences, 2160 Litton-Reaves Hall, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061, USA; (M.W.B.); (M.A.C.)
- Correspondence: ; Tel.: +1-(540)-231-4750
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13
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Castro L, Remund Wiger E, Wasserman E. Focusing and shifting attention in pigeon category learning. JOURNAL OF EXPERIMENTAL PSYCHOLOGY-ANIMAL LEARNING AND COGNITION 2021; 47:371-383. [PMID: 34618535 DOI: 10.1037/xan0000302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Adaptively and flexibly modifying one's behavior depending on the current demands of the situation is a hallmark of executive function. Here, we examined whether pigeons could flexibly shift their attention from one set of features that were relevant in one categorization task to another set of features that were relevant in a second categorization task. Critically, members of both sets of features were available on every training trial, thereby requiring that attention be adaptively deployed on a trial-by-trial basis based on contextual information. The pigeons not only learned to correctly categorize the stimuli but, as training progressed, they concentrated their pecks to the training stimuli (a proxy measure for attention) on those features that were relevant in a specific context. The pigeons selectively tracked the features that were relevant in Context 1-but were irrelevant in Context 2-and they selectively tracked the features that were relevant in Context 2-but were irrelevant in Context 1. This adept feature tracking requires disengaging attention from a previously relevant feature and shifting attention to a previously ignored feature on a trial-by-trial basis. Pigeons' adaptive and flexible performance provides strong empirical support for the involvement of focusing and shifting attention under exceptionally challenging training conditions. (PsycInfo Database Record (c) 2021 APA, all rights reserved).
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14
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Schede HH, Schneider CG, Stergiadou J, Borm LE, Ranjak A, Yamawaki TM, David FPA, Lönnerberg P, Tosches MA, Codeluppi S, La Manno G. Spatial tissue profiling by imaging-free molecular tomography. Nat Biotechnol 2021; 39:968-977. [PMID: 33875865 DOI: 10.1038/s41587-021-00879-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 03/05/2021] [Indexed: 02/02/2023]
Abstract
Several techniques are currently being developed for spatially resolved omics profiling, but each new method requires the setup of specific detection strategies or specialized instrumentation. Here we describe an imaging-free framework to localize high-throughput readouts within a tissue by cutting the sample into thin strips in a way that allows subsequent image reconstruction. We implemented this framework to transform a low-input RNA sequencing protocol into an imaging-free spatial transcriptomics technique (called STRP-seq) and validated it by profiling the spatial transcriptome of the mouse brain. We applied the technique to the brain of the Australian bearded dragon, Pogona vitticeps. Our results reveal the molecular anatomy of the telencephalon of this lizard, providing evidence for a marked regionalization of the reptilian pallium and subpallium. We expect that STRP-seq can be used to derive spatially resolved data from a range of other omics techniques.
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Affiliation(s)
- Halima Hannah Schede
- Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Christian G Schneider
- Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Charité-Universitätsmedizin Berlin, corporate member of the Freie Universität Berlin and Humboldt-Universität zu Berlin: NeuroCure Clinical Research Center, Berlin, Germany
| | - Johanna Stergiadou
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden.,10x Genomics, Stockholm, Sweden
| | - Lars E Borm
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Anurag Ranjak
- Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Tracy M Yamawaki
- Max Planck Institute for Brain Research, Frankfurt am Main, Germany.,Amgen, Inc., South San Francisco, CA, USA
| | - Fabrice P A David
- Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,BioInformatics Competence Center, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Peter Lönnerberg
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Maria Antonietta Tosches
- Max Planck Institute for Brain Research, Frankfurt am Main, Germany.,Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Simone Codeluppi
- Division of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, Stockholm, Sweden
| | - Gioele La Manno
- Brain Mind Institute, School of Life Sciences, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
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15
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Evidence That Artificial Light at Night Induces Structure-Specific Changes in Brain Plasticity in a Diurnal Bird. Biomolecules 2021; 11:biom11081069. [PMID: 34439736 PMCID: PMC8394529 DOI: 10.3390/biom11081069] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/12/2021] [Accepted: 07/12/2021] [Indexed: 11/26/2022] Open
Abstract
We recently reported that artificial light at night (ALAN), at ecologically relevant intensities (1.5, 5 lux), increases cell proliferation in the ventricular zone and recruitment of new neurons in several forebrain regions of female zebra finches (Taeniopygia guttata), along with a decrease of total neuronal densities in some of these regions (indicating possible neuronal death). In the present study, we exposed male zebra finches to the same ALAN intensities, treated them with 5′-bromo-2′-deoxyuridine, quantified cell proliferation and neuronal recruitment in several forebrain regions, and compared them to controls that were kept under dark nights. ALAN increased cell proliferation in the ventricular zone, similar to our previous findings in females. We also found, for the first time, that ALAN increased new neuronal recruitment in HVC and Area X, which are part of the song system in the brain and are male-specific. In other brain regions, such as the medial striatum, nidopallium caudale, and hippocampus, we recorded an increased neuronal recruitment only in the medial striatum (unlike our previous findings in females), and relative to the controls this increase was less prominent than in females. Moreover, the effect of ALAN duration on total neuronal densities in the studied regions varied between the sexes, supporting the suggestion that males are more resilient to ALAN than females. Suppression of nocturnal melatonin levels after ALAN exhibited a light intensity-dependent decrease in males in contrast to females, another indication that males might be less affected by ALAN. Taken together, our study emphasizes the importance of studying both sexes when considering ALAN effects on brain plasticity.
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Abstract
Since foot preference of cockatoos and parrots to hold and manipulate food and other objects has been associated with better ability to perform certain tasks, we predicted that either strength or direction of foot preference would correlate with brain size. Our study of 25 psittacine species of Australia found that species with larger absolute brain mass have stronger foot preferences and that percent left-footedness is correlated positively with brain mass. In a sub-sample of 11 species, we found an association between foot preference and size of the nidopallial region of the telencephalon, an area equivalent to the mammalian cortex and including regions with executive function and other higher-level functions. Our analysis showed that percent left-foot use correlates positively and significantly with size of the nidopallium relative to the whole brain, but not with the relative size of the optic tecta. Psittacine species with stronger left-foot preferences have larger brains, with the nidopallium making up a greater proportion of those brains. Our results are the first to show an association between brain size and asymmetrical limb use by parrots and cockatoos. Our results support the hypothesis that limb preference enhances brain capacity and higher (nidopallial) functioning.
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17
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Pika S, Sima MJ, Blum CR, Herrmann E, Mundry R. Ravens parallel great apes in physical and social cognitive skills. Sci Rep 2020; 10:20617. [PMID: 33303790 PMCID: PMC7728792 DOI: 10.1038/s41598-020-77060-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Accepted: 11/02/2020] [Indexed: 12/31/2022] Open
Abstract
Human children show unique cognitive skills for dealing with the social world but their cognitive performance is paralleled by great apes in many tasks dealing with the physical world. Recent studies suggested that members of a songbird family-corvids-also evolved complex cognitive skills but a detailed understanding of the full scope of their cognition was, until now, not existent. Furthermore, relatively little is known about their cognitive development. Here, we conducted the first systematic, quantitative large-scale assessment of physical and social cognitive performance of common ravens with a special focus on development. To do so, we fine-tuned one of the most comprehensive experimental test-batteries, the Primate Cognition Test Battery (PCTB), to raven features enabling also a direct, quantitative comparison with the cognitive performance of two great ape species. Full-blown cognitive skills were already present at the age of four months with subadult ravens' cognitive performance appearing very similar to that of adult apes in tasks of physical (quantities, and causality) and social cognition (social learning, communication, and theory of mind). These unprecedented findings strengthen recent assessments of ravens' general intelligence, and aid to the growing evidence that the lack of a specific cortical architecture does not hinder advanced cognitive skills. Difficulties in certain cognitive scales further emphasize the quest to develop comparative test batteries that tap into true species rather than human specific cognitive skills, and suggest that socialization of test individuals may play a crucial role. We conclude to pay more attention to the impact of personality on cognitive output, and a currently neglected topic in Animal Cognition-the linkage between ontogeny and cognitive performance.
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Affiliation(s)
- Simone Pika
- Comparative BioCognition, Institute of Cognitive Science, University of Osnabrück, Artilleriestrasse 34, 49076, Osnabrück, Germany. .,Research Group "Evolution of Communication", Max Planck Institute for Ornithology, Seewiesen, Germany.
| | - Miriam Jennifer Sima
- Research Group "Evolution of Communication", Max Planck Institute for Ornithology, Seewiesen, Germany
| | - Christian R Blum
- Research Group "Evolution of Communication", Max Planck Institute for Ornithology, Seewiesen, Germany.,Department of Behavioral and Cognitive Biology, University of Vienna, Vienna, Austria
| | - Esther Herrmann
- Research Group "Human Origins of Self-Regulation", Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany.,Department of Psychology, Centre for Comparative and Evolutionary Psychology, University of Portsmouth, Portsmouth, UK
| | - Roger Mundry
- Interim Group Primatology, Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany
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18
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Clark WJ, Colombo M. The functional architecture, receptive field characteristics, and representation of objects in the visual network of the pigeon brain. Prog Neurobiol 2020; 195:101781. [DOI: 10.1016/j.pneurobio.2020.101781] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/10/2020] [Accepted: 02/19/2020] [Indexed: 01/08/2023]
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19
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Stacho M, Herold C, Rook N, Wagner H, Axer M, Amunts K, Güntürkün O. A cortex-like canonical circuit in the
avian forebrain. Science 2020; 369:369/6511/eabc5534. [DOI: 10.1126/science.abc5534] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Accepted: 08/13/2020] [Indexed: 12/15/2022]
Abstract
Although the avian pallium seems to lack
an organization akin to that of the cerebral
cortex, birds exhibit extraordinary cognitive
skills that are comparable to those of mammals. We
analyzed the fiber architecture of the avian
pallium with three-dimensional polarized light
imaging and subsequently reconstructed local and
associative pallial circuits with tracing
techniques. We discovered an iteratively repeated,
column-like neuronal circuitry across the
layer-like nuclear boundaries of the hyperpallium
and the sensory dorsal ventricular ridge. These
circuits are connected to neighboring columns and,
via tangential layer-like connections, to higher
associative and motor areas. Our findings indicate
that this avian canonical circuitry is similar to
its mammalian counterpart and might constitute the
structural basis of neuronal computation.
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Affiliation(s)
- Martin Stacho
- Department of Biopsychology,
Institute of Cognitive Neuroscience, Faculty of
Psychology, Ruhr-University Bochum, 44801 Bochum,
Germany
- Department of Neurophysiology,
Institute of Physiology, Faculty of Medicine,
Ruhr-University Bochum, 44801 Bochum,
Germany
| | - Christina Herold
- Cécile and Oskar Vogt Institute for
Brain Research, Medical Faculty, Heinrich Heine
University of Düsseldorf, 40225 Düsseldorf,
Germany
| | - Noemi Rook
- Department of Biopsychology,
Institute of Cognitive Neuroscience, Faculty of
Psychology, Ruhr-University Bochum, 44801 Bochum,
Germany
| | - Hermann Wagner
- Institute for Biology II, RWTH Aachen
University, 52074 Aachen, Germany
| | - Markus Axer
- Institute of Neuroscience and
Medicine INM-1, Research Center Jülich, 52425
Jülich, Germany
| | - Katrin Amunts
- Cécile and Oskar Vogt Institute for
Brain Research, Medical Faculty, Heinrich Heine
University of Düsseldorf, 40225 Düsseldorf,
Germany
- Institute of Neuroscience and
Medicine INM-1, Research Center Jülich, 52425
Jülich, Germany
| | - Onur Güntürkün
- Department of Biopsychology,
Institute of Cognitive Neuroscience, Faculty of
Psychology, Ruhr-University Bochum, 44801 Bochum,
Germany
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20
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Moaraf S, Heiblum R, Vistoropsky Y, Okuliarová M, Zeman M, Barnea A. Artificial Light at Night Increases Recruitment of New Neurons and Differentially Affects Various Brain Regions in Female Zebra Finches. Int J Mol Sci 2020; 21:E6140. [PMID: 32858878 PMCID: PMC7503983 DOI: 10.3390/ijms21176140] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 08/22/2020] [Accepted: 08/22/2020] [Indexed: 11/16/2022] Open
Abstract
Despite growing evidence that demonstrate adverse effects of artificial light at night (ALAN) on many species, relatively little is known regarding its effects on brain plasticity in birds. We recently showed that although ALAN increases cell proliferation in brains of birds, neuronal densities in two brain regions decreased, indicating neuronal death, which might be due to mortality of newly produced neurons or of existing ones. Therefore, in the present study we studied the effect of long-term ALAN on the recruitment of newborn neurons into their target regions in the brain. Accordingly, we exposed zebra finches (Taeniopygia guttata) to 5 lux ALAN, and analysed new neuronal recruitment and total neuronal densities in several brain regions. We found that ALAN increased neuronal recruitment, possibly as a compensatory response to ALAN-induced neuronal death, and/or due to increased nocturnal locomotor activity caused by sleep disruption. Moreover, ALAN also had a differential temporal effect on neuronal densities, because hippocampus was more sensitive to ALAN and its neuronal densities were more affected than in other brain regions. Nocturnal melatonin levels under ALAN were significantly lower compared to controls, indicating that very low ALAN intensities suppress melatonin not only in nocturnal, but also in diurnal species.
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Affiliation(s)
- Stan Moaraf
- School of Zoology, Tel-Aviv University, Tel-Aviv 6997801, Israel
- Department of Natural and Life Sciences, The Open University of Israel, Ra’anana 43710, Israel; (R.H.); (Y.V.); (A.B.)
| | - Rachel Heiblum
- Department of Natural and Life Sciences, The Open University of Israel, Ra’anana 43710, Israel; (R.H.); (Y.V.); (A.B.)
| | - Yulia Vistoropsky
- Department of Natural and Life Sciences, The Open University of Israel, Ra’anana 43710, Israel; (R.H.); (Y.V.); (A.B.)
| | - Monika Okuliarová
- Department of Animal Physiology and Ethology, Faculty of Natural Sciences, Comenius University, 84215 Bratislava, Slovak Republic; (M.O.); (M.Z.)
| | - Michal Zeman
- Department of Animal Physiology and Ethology, Faculty of Natural Sciences, Comenius University, 84215 Bratislava, Slovak Republic; (M.O.); (M.Z.)
| | - Anat Barnea
- Department of Natural and Life Sciences, The Open University of Israel, Ra’anana 43710, Israel; (R.H.); (Y.V.); (A.B.)
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21
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Mazengenya P, Bhagwandin A, Ihunwo AO. Putative adult neurogenesis in palaeognathous birds: The common ostrich (Struthio camelus) and emu (Dromaius novaehollandiae). Int J Dev Neurosci 2020; 80:613-635. [PMID: 32767787 DOI: 10.1002/jdn.10057] [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] [Received: 03/04/2020] [Revised: 08/01/2020] [Accepted: 08/02/2020] [Indexed: 12/13/2022] Open
Abstract
In the current study, we examined adult neurogenesis throughout the brain of the common ostrich (Struthio camelus) and emu (Dromaius novaehollandiae) using immunohistochemistry for the endogenous markers PCNA which labels proliferating cells, and DCX, which stains immature and migrating neurons. The distribution of PCNA and DCX labelled cells was widespread throughout the brain of both species. The highest density of cells immunoreactive to both markers was observed in the olfactory bulbs and the telencephalon, especially the subventricular zone of the lateral ventricle. Proliferative hot spots, identified with strong PCNA and DCX immunolabelling, were identified in the dorsal and ventral poles of the rostral aspects of the lateral ventricles. The density of PCNA immunoreactive cells was less in the telencephalon of the emu compared to the common ostrich. Substantial numbers of PCNA immunoreactive cells were observed in the diencephalon and brainstem, but DCX immunoreactivity was weaker in these regions, preferentially staining axons and dendrites over cell bodies, except in the medial regions of the hypothalamus where distinct DCX immunoreactive cells and fibres were observed. PCNA and DCX immunoreactive cells were readily observed in moderate density in the cortical layers of the cerebellum of both species. The distribution of putative proliferating cells and immature neurons in the brain of the common ostrich and the emu is widespread, far more so than in mammals, and compares with the neognathous birds, and suggests that brain plasticity and neuronal turnover is an important aspect of cognitive brain functions in these birds.
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Affiliation(s)
- Pedzisai Mazengenya
- College of Medicine, Ajman University, Ajman, United Arab Emirates.,School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Adhil Bhagwandin
- Division of Clinical Anatomy and Biological Anthropology, Department of Human Biology, Faculty of Health Sciences, University of Cape Town, Rondebosch, South Africa
| | - Amadi O Ihunwo
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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22
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Audet JN. Neurobiological and Ecological Correlates of Avian Innovation. Integr Comp Biol 2020; 60:955-966. [PMID: 32681794 DOI: 10.1093/icb/icaa107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In the wild, particularly in rapidly changing conditions, being capable of solving new problems can increase an animal's chances of survival and reproduction. In the current context of widespread habitat destruction and increasing urbanization, innovativeness might be a crucial trait. In the past few decades, birds have proven to be a model taxon for the study of innovation, thanks to the abundant literature on avian innovation reports. Innovation databases in birds have been successfully employed to assess associations between innovativeness and other traits such as invasion success, life history, generalism, and brain encephalization. In order to more directly assess the causes of variation in innovation, a complementary approach consists in measuring innovativeness in wild-caught animals using problem-solving tasks that mimic innovations in the field. This method can allow for finer scale evaluation of ecological and neural correlates of innovation. Here, I review some of the most important findings on the correlates of innovation, with a particular focus on neural ones. I conclude by discussing avenues for future research, which I suggest should focus on neurobiology.
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23
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Zachar G, Montagnese C, Fazekas EA, Kemecsei RG, Papp SM, Dóra F, Renner É, Csillag A, Pogány Á, Dobolyi A. Brain Distribution and Sexually Dimorphic Expression of Amylin in Different Reproductive Stages of the Zebra Finch ( Taeniopygia guttata) Suggest Roles of the Neuropeptide in Song Learning and Social Behaviour. Front Neurosci 2020; 13:1401. [PMID: 32009882 PMCID: PMC6971405 DOI: 10.3389/fnins.2019.01401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 12/12/2019] [Indexed: 11/24/2022] Open
Abstract
The expression of the recently identified neuropeptide, amylin, is restricted in rodents to the postpartum preoptic area and may play a role in the control of parental behaviours and food intake. These processes are substantially different between bird and rodent parents as birds do not lactate but often show biparental care of the offspring. To establish the presence and role of amylin in the bird brain, in the present study, we investigated the distribution of amylin in brains of adult male and female zebra finches in three different reproductive stages (i.e. paired without young, incubating eggs or provisioning nestlings) and in unpaired control birds living in same sex flocks. Amylin mRNA was identified in the hypothalamus of zebra finch by RT-PCR, which was also used to produce probes for in situ hybridisation. Subsequently, in situ hybridisation histochemistry was performed in brain sections, and the labelling signal was quantified and compared between the groups. Amylin showed a much wider brain distribution than that of rodents. A strong and, in some regions, sexually dimorphic label was found in the striatum and several brain regions of the social behavioural network in both males and females. Many regions responsible for the learning of birdsong also contained amylin-positive neurons, and some regions showed sex differences reflecting the fact that vocalisation is sexually dimorphic in the zebra finch: only males sing. Area X (Ar.X), a striatal song centre present only in males, was labelled in paired but not unpaired male. Ar.X, another song centre, the lateral part of the magnocellular nucleus of the anterior nidopallium (lMAN) also contained amylin and had higher amylin label in paired, as opposed to unpaired birds. The wider distribution of amylin in birds as compared to rodents suggests a more general role of amylin in social or other behaviours in avian species than in mammals. Alternatively, parental care in birds may be a more complex behavioural trait involving a wider set of brain regions. The sex differences in song centres, and the changes with reproductive status suggest a participation of amylin in social behaviours and related changes in the singing of males.
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Affiliation(s)
- Gergely Zachar
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Catherine Montagnese
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Emese A Fazekas
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Eötvös Loránd University and the Hungarian Academy of Sciences, Budapest, Hungary.,Department of Ethology, Eötvös Loránd University, Budapest, Hungary
| | - Róbert G Kemecsei
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Szilvia M Papp
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Fanni Dóra
- Human Brain Tissue Bank and Microdissection Laboratory, Semmelweis University, Budapest, Hungary
| | - Éva Renner
- Human Brain Tissue Bank and Microdissection Laboratory, Semmelweis University, Budapest, Hungary
| | - András Csillag
- Department of Anatomy, Histology and Embryology, Semmelweis University, Budapest, Hungary
| | - Ákos Pogány
- Department of Ethology, Eötvös Loránd University, Budapest, Hungary
| | - Arpád Dobolyi
- MTA-ELTE Laboratory of Molecular and Systems Neurobiology, Department of Physiology and Neurobiology, Eötvös Loránd University and the Hungarian Academy of Sciences, Budapest, Hungary
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Rook N, Letzner S, Packheiser J, Güntürkün O, Beste C. Immediate early gene fingerprints of multi-component behaviour. Sci Rep 2020; 10:384. [PMID: 31941919 PMCID: PMC6962395 DOI: 10.1038/s41598-019-56998-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 12/18/2019] [Indexed: 11/08/2022] Open
Abstract
The ability to execute different responses in an expedient temporal order is central for efficient goal-directed actions and often referred to as multi-component behaviour. However, the underlying neural mechanisms on a cellular level remain unclear. Here we establish a link between neural activity at the cellular level within functional neuroanatomical structures to this form of goal-directed behaviour by analyzing immediate early gene (IEG) expression in an animal model, the pigeon (Columba livia). We focus on the group of zif268 IEGs and ZENK in particular. We show that when birds have to cascade separate task goals, ZENK expression is increased in the avian equivalent of the mammalian prefrontal cortex, i.e. the nidopallium caudolaterale (NCL) as well as in the homologous striatum. Moreover, in the NCL as well as in the medial striatum (MSt), the degree of ZENK expression was highly correlated with the efficiency of multi-component behaviour. The results provide the first link between cellular IEG expression and behavioural outcome in multitasking situations. Moreover, the data suggest that the function of the fronto-striatal circuitry is comparable across species indicating that there is limited flexibility in the implementation of complex cognition such as multi-component behaviour within functional neuroanatomical structures.
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Affiliation(s)
- Noemi Rook
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany.
| | - Sara Letzner
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Julian Packheiser
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Onur Güntürkün
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr University Bochum, Bochum, Germany
| | - Christian Beste
- Cognitive Neurophysiology, Department of Child and Adolescent Psychiatry, Faculty of Medicine, TU Dresden, Dresden, Germany
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25
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Moaraf S, Vistoropsky Y, Pozner T, Heiblum R, Okuliarová M, Zeman M, Barnea A. Artificial light at night affects brain plasticity and melatonin in birds. Neurosci Lett 2020; 716:134639. [DOI: 10.1016/j.neulet.2019.134639] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Revised: 11/17/2019] [Accepted: 11/19/2019] [Indexed: 11/29/2022]
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26
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Mello CV, Kaser T, Buckner AA, Wirthlin M, Lovell PV. Molecular architecture of the zebra finch arcopallium. J Comp Neurol 2019; 527:2512-2556. [PMID: 30919954 DOI: 10.1002/cne.24688] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 03/12/2019] [Accepted: 03/13/2019] [Indexed: 12/23/2022]
Abstract
The arcopallium, a key avian forebrain region, receives inputs from numerous brain areas and is a major source of descending sensory and motor projections. While there is evidence of arcopallial subdivisions, the internal organization or the arcopallium is not well understood. The arcopallium is also considered the avian homologue of mammalian deep cortical layers and/or amygdalar subdivisions, but one-to-one correspondences are controversial. Here we present a molecular characterization of the arcopallium in the zebra finch, a passerine songbird species and a major model organism for vocal learning studies. Based on in situ hybridization for arcopallial-expressed transcripts (AQP1, C1QL3, CBLN2, CNTN4, CYP19A1, ESR1/2, FEZF2, MGP, NECAB2, PCP4, PVALB, SCN3B, SCUBE1, ZBTB20, and others) in comparison with cytoarchitectonic features, we have defined 20 distinct regions that can be grouped into six major domains (anterior, posterior, dorsal, ventral, medial, and intermediate arcopallium, respectively; AA, AP, AD, AV, AM, and AI). The data also help to establish the arcopallium as primarily pallial, support a unique topography of the arcopallium in passerines, highlight similarities between the vocal robust nucleus of the arcopallium (RA) and AI, and provide insights into the similarities and differences of cortical and amygdalar regions between birds and mammals. We also propose the use of AMV (instead of nucleus taenia/TnA), AMD, AD, and AI as initial steps toward a universal arcopallial nomenclature. Besides clarifying the internal organization of the arcopallium, the data provide a coherent basis for further functional and comparative studies of this complex avian brain region.
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Affiliation(s)
- Claudio V Mello
- Department of Behavioral Neuroscience, OHSU, Portland, Oregon
| | - Taylor Kaser
- Department of Behavioral Neuroscience, OHSU, Portland, Oregon
| | - Alexa A Buckner
- Department of Behavioral Neuroscience, OHSU, Portland, Oregon
| | - Morgan Wirthlin
- Department of Behavioral Neuroscience, OHSU, Portland, Oregon
| | - Peter V Lovell
- Department of Behavioral Neuroscience, OHSU, Portland, Oregon
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27
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Parallel Emergence of a Compartmentalized Striatum with the Phylogenetic Development of the Cerebral Cortex. Brain Sci 2019; 9:brainsci9040090. [PMID: 31010240 PMCID: PMC6523536 DOI: 10.3390/brainsci9040090] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 04/09/2019] [Accepted: 04/17/2019] [Indexed: 01/05/2023] Open
Abstract
The intricate neuronal architecture of the striatum plays a pivotal role in the functioning of the basal ganglia circuits involved in the control of various aspects of motor, cognitive, and emotional functions. Unlike the cerebral cortex, which has a laminar structure, the striatum is primarily composed of two functional subdivisions (i.e., the striosome and matrix compartments) arranged in a mosaic fashion. This review addresses whether striatal compartmentalization is present in non-mammalian vertebrates, in which simple cognitive and behavioral functions are executed by primitive sensori-motor systems. Studies show that neuronal subpopulations that share neurochemical and connective properties with striosomal and matrix neurons are present in the striata of not only anamniotes (fishes and amphibians), but also amniotes (reptiles and birds). However, these neurons do not form clearly segregated compartments in these vertebrates, suggesting that such compartmentalization is unique to mammals. In the ontogeny of the mammalian forebrain, the later-born matrix neurons disperse the early-born striosome neurons into clusters to form the compartments in tandem with the development of striatal afferents from the cortex. We propose that striatal compartmentalization in mammals emerged in parallel with the evolution of the cortex and possibly enhanced complex processing of sensory information and behavioral flexibility phylogenetically.
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28
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Nakamori T, Chiba Y, Fujitani K, Makita A, Okubo T, Hirai K, Takamatsu N, Ohki-Hamazaki H. Characteristic expressions of the natriuretic peptide family in the telencephalon of juvenile chick. Brain Res 2019; 1708:116-125. [DOI: 10.1016/j.brainres.2018.12.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 11/22/2018] [Accepted: 12/04/2018] [Indexed: 12/16/2022]
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29
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Baeuml SW, Biechl D, Wullimann MF. Adult islet1 Expression Outlines Ventralized Derivatives Along Zebrafish Neuraxis. Front Neuroanat 2019; 13:19. [PMID: 30863287 PMCID: PMC6399416 DOI: 10.3389/fnana.2019.00019] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Accepted: 02/01/2019] [Indexed: 01/16/2023] Open
Abstract
Signals issued by dorsal roof and ventral floor plates, respectively, underlie the major patterning process of dorsalization and ventralization during vertebrate neural tube development. The ventrally produced morphogen Sonic hedgehog (SHH) is crucial for vertebrate hindbrain and spinal motor neuron development. One diagnostic gene for motor neurons is the LIM/homeodomain gene islet1, which has additional ventral expression domains extending into mid- and forebrain. In order to corroborate motor neuron development and, in particular, to improve on the identification of poorly documented zebrafish forebrain islet1 populations, we studied adult brains of transgenic islet1-GFP zebrafish (3 and 6 months). This molecular neuroanatomical analysis was supported by immunostaining these brains for tyrosine hydroxylase (TH) or choline acetyltransferase (ChAT), respectively, revealing zebrafish catecholaminergic and cholinergic neurons. The present analysis of ChAT and islet1-GFP label confirms ongoing adult expression of islet1 in zebrafish (basal plate) midbrain, hindbrain, and spinal motor neurons. In contrast, non-motor cholinergic systems lack islet1 expression. Additional presumed basal plate islet1 positive systems are described in detail, aided by TH staining which is particularly informative in the diencephalon. Finally, alar plate zebrafish forebrain systems with islet1 expression are described (i.e., thalamus, preoptic region, and subpallium). We conclude that adult zebrafish continue to express islet1 in the same brain systems as in the larva. Further, pending functional confirmation we hypothesize that the larval expression of sonic hedgehog (shh) might causally underlie much of adult islet1 expression because it explains findings beyond ventrally located systems, for example regarding shh expression in the zona limitans intrathalamica and correlated islet1-GFP expression in the thalamus.
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Affiliation(s)
- Stephan W Baeuml
- Division of Neurobiology, Department Biology II, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Daniela Biechl
- Division of Neurobiology, Department Biology II, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Mario F Wullimann
- Division of Neurobiology, Department Biology II, Ludwig-Maximilians-Universität München, Munich, Germany
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30
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Sen S, Parishar P, Pundir AS, Reiner A, Iyengar S. The expression of tyrosine hydroxylase and DARPP-32 in the house crow (Corvus splendens) brain. J Comp Neurol 2019; 527:1801-1836. [PMID: 30697741 DOI: 10.1002/cne.24649] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 01/22/2019] [Accepted: 01/24/2019] [Indexed: 01/27/2023]
Abstract
Birds of the family Corvidae which includes diverse species such as crows, rooks, ravens, magpies, jays, and jackdaws are known for their amazing abilities at problem-solving. Since the catecholaminergic system, especially the neurotransmitter dopamine, plays a role in cognition, we decided to study the distribution of tyrosine hydroxylase (TH), the rate-limiting enzyme in the synthesis of catecholamines in the brain of house crows (Corvus splendens). We also studied the expression of DARPP-32 (dopamine and cAMP-regulated phosphoprotein), which is expressed in dopaminoceptive neurons. Our results demonstrated that as in other avian species, the expression of both TH and DARPP-32 was highest in the house crow striatum. The caudolateral nidopallium (NCL, the avian analogue of the mammalian prefrontal cortex) could be differentiated from the surrounding pallial regions based on a larger number of TH-positive "baskets" of fibers around neurons in this region and greater intensity of DARPP-32 staining in the neuropil in this region. House crows also possessed distinct nuclei in their brains which corresponded to song control regions in other songbirds. Whereas immunoreactivity for TH was higher in the vocal control region Area X compared to the surrounding MSt (medial striatum) in house crows, staining in RA and HVC was not as prominent. Furthermore, the arcopallial song control regions RA (nucleus robustus arcopallialis) and AId (intermediate arcopallium) were strikingly negative for DARPP-32 staining, in contrast to the surrounding arcopallium. Patterns of immunoreactivity for TH and DARPP-32 in "limbic" areas such as the hippocampus, septum, and extended amygdala have also been described.
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Affiliation(s)
- Shankhamala Sen
- Division of Systems Neuroscience, National Brain Research Centre, Gurugram, Haryana, India
| | - Pooja Parishar
- Division of Systems Neuroscience, National Brain Research Centre, Gurugram, Haryana, India
| | - Arvind Singh Pundir
- Division of Systems Neuroscience, National Brain Research Centre, Gurugram, Haryana, India
| | - Anton Reiner
- Department of Anatomy and Neurobiology, University of Tennessee Health Science Center, Memphis, Tennessee, United States.,Department of Ophthalmology, University of Tennessee, Memphis, Tennessee, United States
| | - Soumya Iyengar
- Division of Systems Neuroscience, National Brain Research Centre, Gurugram, Haryana, India
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31
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de Haas EN, van der Eijk JA. Where in the serotonergic system does it go wrong? Unravelling the route by which the serotonergic system affects feather pecking in chickens. Neurosci Biobehav Rev 2018; 95:170-188. [DOI: 10.1016/j.neubiorev.2018.07.007] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 07/09/2018] [Accepted: 07/10/2018] [Indexed: 12/16/2022]
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32
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Ondrasek NR, Freeman SM, Bales KL, Calisi RM. Nonapeptide Receptor Distributions in Promising Avian Models for the Neuroecology of Flocking. Front Neurosci 2018; 12:713. [PMID: 30386202 PMCID: PMC6198083 DOI: 10.3389/fnins.2018.00713] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 09/19/2018] [Indexed: 12/16/2022] Open
Abstract
Collective behaviors, including flocking and group vocalizing, are readily observable across a diversity of free-living avian populations, yet we know little about how neural and ecological factors interactively regulate these behaviors. Because of their involvement in mediating a variety of social behaviors, including avian flocking, nonapeptides are likely mediators of collective behaviors. To advance the neuroecological study of collective behaviors in birds, we sought to map the neuroanatomical distributions of nonapeptide receptors in three promising avian models that are found across a diversity of environments and widely ranging ecological conditions: European starlings, house sparrows, and rock doves. We performed receptor autoradiography using the commercially available nonapeptide receptor radioligands, 125I-ornithine vasotocin analog and 125I-linear vasopressin antagonist, on brain tissue sections from wild-caught individuals from each species. Because there is known pharmacological cross-reactivity between nonapeptide receptor subtypes, we also performed a novel, competitive-binding experiment to examine the composition of receptor populations. We detected binding in numerous regions throughout the brains of each species, with several similarities and differences worth noting. Specifically, we report that all three species exhibit binding in the lateral septum, a key brain area known to regulate avian flocking. In addition, sparrows and starlings show dense binding in the dorsal arcopallium, an area that has received scant attention in the study of social grouping. Furthermore, our competitive binding results suggest that receptor populations in sparrows and starlings differ in the lateral septum versus the dorsal arcopallium. By providing the first comprehensive maps of nonapeptide receptors in European starlings, house sparrows, and rock doves, our work supports the future use of these species as avian models for neuroecological studies of collective behaviors in wild birds.
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Affiliation(s)
- Naomi R Ondrasek
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, United States
| | - Sara M Freeman
- Department of Psychology, University of California, Davis, Davis, CA, United States.,California National Primate Research Center, University of California, Davis, Davis, CA, United States
| | - Karen L Bales
- Department of Psychology, University of California, Davis, Davis, CA, United States.,California National Primate Research Center, University of California, Davis, Davis, CA, United States
| | - Rebecca M Calisi
- Department of Neurobiology, Physiology and Behavior, University of California, Davis, Davis, CA, United States
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33
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NMDA receptors in the avian amygdala and the premotor arcopallium mediate distinct aspects of appetitive extinction learning. Behav Brain Res 2018; 343:71-82. [PMID: 29378293 DOI: 10.1016/j.bbr.2018.01.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 01/07/2018] [Accepted: 01/21/2018] [Indexed: 12/22/2022]
Abstract
Extinction learning is an essential mechanism that enables constant adaptation to ever-changing environmental conditions. The underlying neural circuit is mostly studied with rodent models using auditory cued fear conditioning. In order to uncover the variant and the invariant neural properties of extinction learning, we adopted pigeons as an animal model in an appetitive sign-tracking paradigm. The animals firstly learned to respond to two conditioned stimuli in two different contexts (CS-1 in context A and CS-2 in context B), before conditioned responses to the stimuli were extinguished in the opposite contexts (CS-1 in context B and CS-2 in context A). Subsequently, responding to both stimuli was tested in both contexts. Prior to extinction training, we locally injected the N-methyl-d-aspartate receptor (NMDAR) antagonist 2-Amino-5-phosphonovaleric acid (APV) in either the amygdala or the (pre)motor arcopallium to investigate their involvement in extinction learning. Our findings suggest that the encoding of extinction memory required the activation of amygdala, as visible by an impairment of extinction acquisition by concurrent inactivation of local NMDARs. In contrast, consolidation and subsequent retrieval of extinction memory recruited the (pre)motor arcopallium. Also, the inactivation of arcopallial NMDARs induced a general motoric slowing during extinction training. Thus, our results reveal a double dissociation between arcopallium and amygdala with respect to acquisition and consolidation of extinction, respectively. Our study therefore provides new insights on the two key components of the avian extinction network and their resemblance to the data obtained from mammals, possibly indicating a shared neural mechanism underlying extinction learning shaped by evolution.
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34
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Kuenzel WJ. Mapping the brain of the chicken (Gallus gallus), with emphasis on the septal-hypothalamic region. Gen Comp Endocrinol 2018; 256:4-15. [PMID: 28923430 DOI: 10.1016/j.ygcen.2017.09.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 07/14/2017] [Accepted: 09/13/2017] [Indexed: 01/28/2023]
Abstract
There has been remarkable progress in discoveries made in the avian brain, particularly over the past two decades. This review first highlights some of the discoveries made in the forebrain and credits the Avian Brain Nomenclature Forum, responsible for changing many of the terms found in the cerebrum and for stimulating collaborative research thereafter. The Forum facilitated communication among comparative neurobiologists by eliminating confusing and inaccurate names. The result over the past 15yearshas been a standardized use of avian forebrain terms. Nonetheless, additional changes are needed. The goal of the paper is to encourage a continuing effort to unify the nomenclature throughout the entire avian brain. To emphasize the need for consensus for a single name for each neural structure, I have selected specific structures in the septum and hypothalamus that our laboratory has been investigating, to demonstrate a lack of uniformity in names applied to conservative brain regions compared to the forebrain. The specific areas reviewed include the distributions of gonadotropin-releasing hormone neurons and their terminal fields in circumventricular organs, deep-brain photoreceptors, gonadotropin inhibitory neurons and a complex structure and function of the nucleus of the hippocampal commissure.
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Affiliation(s)
- Wayne J Kuenzel
- Poultry Science Center, University of Arkansas, Fayetteville, AR 72701, USA.
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35
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Lampen J, McAuley JD, Chang SE, Wade J. ZENK induction in the zebra finch brain by song: Relationship to hemisphere, rhythm, oestradiol and sex. J Neuroendocrinol 2017; 29:10.1111/jne.12543. [PMID: 28983985 PMCID: PMC6034175 DOI: 10.1111/jne.12543] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 09/29/2017] [Accepted: 10/02/2017] [Indexed: 01/10/2023]
Abstract
Oestradiol is abundant in the zebra finch auditory forebrain and has the capacity to modulate neural responses to auditory stimuli with specificity as a result of both hemisphere and sex. Arrhythmic song induces greater ZENK expression than rhythmic song in the caudomedial nidopallium (NCM), caudomedial mesopallium (CMM) and nucleus taeniae (Tn) of adult zebra finches. The increases in the auditory regions (i.e. NCM and CMM) may result from detection of errors in the arrhythmic song relative to the learned template. In the present study, zebra finches were treated with oestradiol, the aromatase inhibitor fadrozole or a control and then exposed to rhythmic or arrhythmic song to assess the effect of oestradiol availability on neural responses to auditory rhythms. ZENK mRNA was significantly greater in the left hemisphere within the NCM, CMM and Tn. Main effects of sex were detected in both auditory regions, with increased ZENK in males in the NCM and in females in the CMM. In the CMM, an effect of hormone treatment also existed. Although no pairwise comparison was statistically significant, the pattern suggested greater ZENK expression in control compared to both fadrozole- and oestradiol-treated birds. In the NCM, an interaction between sex and hormone treatment suggested that the sex effect was restricted to control animals. An additional interaction in the NCM among sex, stimulus rhythmicity and hemisphere indicated that the strongest effect of laterality was present in males exposed to arrhythmic song. The hormone effects suggest that an optimal level of oestradiol may exist for processing rhythmicity of auditory stimuli. The overall pattern for left lateralisation parallels the left lateralisation of language processing in humans and may suggest that this hemisphere is specialised for processing conspecific vocalisations. The reversed sex differences in the NCM and CMM suggest that males and females differentially rely on components of the auditory forebrain for processing conspecific song.
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Affiliation(s)
- Jennifer Lampen
- Neuroscience Program, Michigan State University, East Lansing, MI 48824-1101, USA
- Corresponding author. Address: Neuroscience Program, Michigan State University, 293 Farm Lane, Room 108 East Lansing, MI 48824-1101, USA. Tel: +1-517-432-5113; fax: +1-517-432-2744.
| | - J. Devin McAuley
- Neuroscience Program, Michigan State University, East Lansing, MI 48824-1101, USA
- Department of Psychology, Michigan State University, East Lansing, MI 48824-1101, USA
| | - Soo-Eun Chang
- Department of Psychiatry, University of Michigan, Ann Arbor, MI 48109, USA
| | - Juli Wade
- Neuroscience Program, Michigan State University, East Lansing, MI 48824-1101, USA
- Department of Psychology, Michigan State University, East Lansing, MI 48824-1101, USA
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36
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Herold C, Paulitschek C, Palomero-Gallagher N, Güntürkün O, Zilles K. Transmitter receptors reveal segregation of the arcopallium/amygdala complex in pigeons (Columba livia). J Comp Neurol 2017; 526:439-466. [PMID: 29063593 DOI: 10.1002/cne.24344] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Revised: 10/09/2017] [Accepted: 10/10/2017] [Indexed: 12/21/2022]
Abstract
At the beginning of the 20th century it was suggested that a complex group of nuclei in the avian posterior ventral telencephalon is comparable to the mammalian amygdala. Subsequent findings, however, revealed that most of these structures share premotor characteristics, while some indeed constitute the avian amygdala. These developments resulted in 2004 in a change of nomenclature of these nuclei, which from then on were named arcopallial or amygdala nuclei and referred to as the arcopallium/amygdala complex. The structural basis for the similarities between avian and mammalian arcopallial and amygdala subregions is poorly understood. Therefore, we analyzed binding site densities for glutamatergic AMPA, NMDA and kainate, GABAergic GABAA , muscarinic M1 , M2 and nicotinic acetylcholine (nACh; α4 β2 subtype), noradrenergic α1 and α2 , serotonergic 5-HT1A and dopaminergic D1/5 receptors using quantitative in vitro receptor autoradiography combined with a detailed analysis of the cyto- and myelo-architecture. Our approach supports a segregation of the pigeon's arcopallium/amygdala complex into the following subregions: the arcopallium anterius (AA), the arcopallium ventrale (AV), the arcopallium dorsale (AD), the arcopallium intermedium (AI), the arcopallium mediale (AM), the arcopallium posterius (AP), the nucleus posterioris amygdalopallii pars basalis (PoAb) and pars compacta (PoAc), the nucleus taeniae amgygdalae (TnA) and the area subpallialis amygdalae (SpA). Some of these subregions showed further subnuclei and each region of the arcopallium/amygdala complex are characterized by a distinct multi-receptor density expression. Here we provide a new detailed map of the pigeon's arcopallium/amygdala complex and compare the receptor architecture of the subregions to their possible mammalian counterparts.
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Affiliation(s)
- Christina Herold
- C. and O. Vogt Institute of Brain Research, Medical Faculty, Heinrich-Heine University of Düsseldorf, Düsseldorf, Germany
| | - Christina Paulitschek
- C. and O. Vogt Institute of Brain Research, Medical Faculty, Heinrich-Heine University of Düsseldorf, Düsseldorf, Germany
| | | | - Onur Güntürkün
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
| | - Karl Zilles
- Institute of Neuroscience and Medicine INM-1, Research Center Jülich, Jülich, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, RWTH Aachen University, and JARA - Translational Brain Medicine, Aachen, Germany
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37
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Paterson AK, Bottjer SW. Cortical inter-hemispheric circuits for multimodal vocal learning in songbirds. J Comp Neurol 2017; 525:3312-3340. [PMID: 28681379 DOI: 10.1002/cne.24280] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 06/30/2017] [Accepted: 07/03/2017] [Indexed: 02/02/2023]
Abstract
Vocal learning in songbirds and humans is strongly influenced by social interactions based on sensory inputs from several modalities. Songbird vocal learning is mediated by cortico-basal ganglia circuits that include the SHELL region of lateral magnocellular nucleus of the anterior nidopallium (LMAN), but little is known concerning neural pathways that could integrate multimodal sensory information with SHELL circuitry. In addition, cortical pathways that mediate the precise coordination between hemispheres required for song production have been little studied. In order to identify candidate mechanisms for multimodal sensory integration and bilateral coordination for vocal learning in zebra finches, we investigated the anatomical organization of two regions that receive input from SHELL: the dorsal caudolateral nidopallium (dNCLSHELL ) and a region within the ventral arcopallium (Av). Anterograde and retrograde tracing experiments revealed a topographically organized inter-hemispheric circuit: SHELL and dNCLSHELL , as well as adjacent nidopallial areas, send axonal projections to ipsilateral Av; Av in turn projects to contralateral SHELL, dNCLSHELL , and regions of nidopallium adjacent to each. Av on each side also projects directly to contralateral Av. dNCLSHELL and Av each integrate inputs from ipsilateral SHELL with inputs from sensory regions in surrounding nidopallium, suggesting that they function to integrate multimodal sensory information with song-related responses within LMAN-SHELL during vocal learning. Av projections share this integrated information from the ipsilateral hemisphere with contralateral sensory and song-learning regions. Our results suggest that the inter-hemispheric pathway through Av may function to integrate multimodal sensory feedback with vocal-learning circuitry and coordinate bilateral vocal behavior.
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Affiliation(s)
- Amy K Paterson
- Program in Genetic, Molecular and Cellular Biology, Keck School of Medicine, University of Southern California, Los Angeles, California
| | - Sarah W Bottjer
- Section of Neurobiology, University of Southern California, Los Angeles, California
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38
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Grommen SVH, Scott MK, Darras VM, De Groef B. Spatial and temporal expression profiles of urocortin 3 mRNA in the brain of the chicken (Gallus gallus). J Comp Neurol 2017; 525:2583-2591. [PMID: 28395119 DOI: 10.1002/cne.24223] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 03/20/2017] [Accepted: 04/03/2017] [Indexed: 01/15/2023]
Abstract
Urocortin 3 (UCN3) is a neuropeptide believed to regulate stress-coping responses by binding to type 2 corticotropin-releasing hormone receptors. Here, we report the cloning and brain distribution of UCN3 mRNA in a sauropsid-the chicken, Gallus gallus. Mature chicken UCN3 is predicted to be a 40-amino acid peptide showing high sequence similarity to human (93%), mouse (93%), and Xenopus (88%) UCN3. During the last third of embryonic development, UCN3 mRNA levels changed differentially in the various brain parts. In all brain parts, UCN3 mRNA levels tended to increase toward hatching, except for caudal brainstem, where a gradual decrease was observed during the last week of embryonic development. In cerebellum, a rapid increase in gene expression occurred between embryonic days 17 and 19. Using in situ hybridization, UCN3 mRNA was found to be expressed predominantly in the hypothalamus, pons, and medulla of posthatch chick brains, but not in some areas that are among the main expression sites in rodents, such as the brain areas where in mammals the median preoptic nucleus and the medial amygdala are located. This suggests that the roles of UCN3 in chicken, and perhaps sauropsids in general, are not all identical to those in rodents.
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Affiliation(s)
- Sylvia V H Grommen
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, 3086, Australia
| | - Melissa K Scott
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, 3086, Australia
| | - Veerle M Darras
- Laboratory of Comparative Endocrinology, Department of Biology, KU Leuven, B-3000, Leuven, Belgium
| | - Bert De Groef
- Department of Physiology, Anatomy and Microbiology, La Trobe University, Bundoora, Victoria, 3086, Australia
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Mazengenya P, Bhagwandin A, Nkomozepi P, Manger PR, Ihunwo AO. Putative adult neurogenesis in two domestic pigeon breeds (Columba livia domestica): racing homer versus utility carneau pigeons. Neural Regen Res 2017; 12:1086-1096. [PMID: 28852390 PMCID: PMC5558487 DOI: 10.4103/1673-5374.211187] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Generation of neurons in the brains of adult birds has been studied extensively in the telencephalon of song birds and few studies are reported on the distribution of PCNA and DCX in the telencephalon of adult non-song learning birds. We report here on adult neurogenesis throughout the brains of two breeds of adult domestic pigeons (Columba livia domestica), the racing homer and utility carneau using endogenous immunohistochemical markers proliferating cell nuclear antigen (PCNA) for proliferating cells and doublecortin (DCX) for immature and migrating neurons. The distribution of PCNA and DCX immunoreactivity was very similar in both pigeon breeds with only a few minor differences. In both pigeons, PCNA and DCX immunoreactivity was observed in the olfactory bulbs, walls of the lateral ventricle, telencephalic subdivisions of the pallium and subpallium, diencephalon, mesencephalon and cerebellum. Generally, the olfactory bulbs and telencephalon had more PCNA and DCX cells than other regions. Two proliferative hotspots were evident in the dorsal and ventral poles of the lateral ventricles. PCNA- and DCX-immunoreactive cells migrated radially from the walls of the lateral ventricle into the parenchyma. In most telencephalic regions, the density of PCNA- and DCX-immunoreactive cells increased from rostral to caudal, except in the mesopallium where the density decreased from rostral to middle levels and then increased caudally. DCX immunoreactivity was more intense in fibres than in cell bodies and DCX-immunoreactive cells included small granular cells, fusiform bipolar cells, large round and or polygonal multipolar cells. The similarity in the distribution of proliferating cells and new neurons in the telencephalon of the two breeds of pigeons may suggest that adult neurogenesis is a conserved trait as an ecological adaptation irrespective of body size.
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Affiliation(s)
- Pedzisai Mazengenya
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Adhil Bhagwandin
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Pilani Nkomozepi
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Paul R Manger
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Amadi O Ihunwo
- School of Anatomical Sciences, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
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Turecek J, Jackman SL, Regehr WG. Synaptic Specializations Support Frequency-Independent Purkinje Cell Output from the Cerebellar Cortex. Cell Rep 2016; 17:3256-3268. [PMID: 28009294 PMCID: PMC5870134 DOI: 10.1016/j.celrep.2016.11.081] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 11/14/2016] [Accepted: 11/28/2016] [Indexed: 11/23/2022] Open
Abstract
The output of the cerebellar cortex is conveyed to the deep cerebellar nuclei (DCN) by Purkinje cells (PCs). Here, we characterize the properties of the PC-DCN synapse in juvenile and adult mice and find that prolonged high-frequency stimulation leads to steady-state responses that become increasingly frequency independent within the physiological firing range of PCs in older animals, resulting in a linear relationship between charge transfer and activation frequency. We used a low-affinity antagonist to show that GABAA-receptor saturation occurs at this synapse but does not underlie frequency-invariant transmission. We propose that PC-DCN synapses have two components of release: one prominent early in trains and another specialized to maintain transmission during prolonged activation. Short-term facilitation offsets partial vesicle depletion to produce frequency-independent transmission.
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Affiliation(s)
- Josef Turecek
- Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Skyler L Jackman
- Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Wade G Regehr
- Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA.
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Zachar G, Tóth AS, Balogh M, Csillag A. Effect of nucleus accumbens lesions on socially motivated behaviour of young domestic chicks. Eur J Neurosci 2016; 45:1606-1612. [DOI: 10.1111/ejn.13402] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Revised: 08/26/2016] [Accepted: 09/13/2016] [Indexed: 12/01/2022]
Affiliation(s)
- Gergely Zachar
- Department of Anatomy; Histology and Embryology; Semmelweis University; 58 Tűzoltó u Budapest 1094 Hungary
| | - András Sebestyén Tóth
- Department of Anatomy; Histology and Embryology; Semmelweis University; 58 Tűzoltó u Budapest 1094 Hungary
| | - Márton Balogh
- Department of Anatomy; Histology and Embryology; Semmelweis University; 58 Tűzoltó u Budapest 1094 Hungary
| | - András Csillag
- Department of Anatomy; Histology and Embryology; Semmelweis University; 58 Tűzoltó u Budapest 1094 Hungary
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Karten HJ. Vertebrate brains and evolutionary connectomics: on the origins of the mammalian 'neocortex'. Philos Trans R Soc Lond B Biol Sci 2016; 370:rstb.2015.0060. [PMID: 26554047 DOI: 10.1098/rstb.2015.0060] [Citation(s) in RCA: 83] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The organization of the non-mammalian forebrain had long puzzled neurobiologists. Unlike typical mammalian brains, the telencephalon is not organized in a laminated 'cortical' manner, with distinct cortical areas dedicated to individual sensory modalities or motor functions. The two major regions of the telencephalon, the basal ventricular ridge (BVR) and the dorsal ventricular ridge (DVR), were loosely referred to as being akin to the mammalian basal ganglia. The telencephalon of non-mammalian vertebrates appears to consist of multiple 'subcortical' groups of cells. Analysis of the nuclear organization of the avian brain, its connections, molecular properties and physiology, and organization of its pattern of circuitry and function relative to that of mammals, collectively referred to as 'evolutionary connectomics', revealed that only a restricted portion of the BVR is homologous to the basal ganglia of mammals. The remaining dorsal regions of the DVR, wulst and arcopallium of the avian brain contain telencephalic inputs and outputs remarkably similar to those of the individual layers of the mammalian 'neocortex', hippocampus and amygdala, with instances of internuclear connections strikingly similar to those found between cortical layers and within radial 'columns' in the mammalian sensory and motor cortices. The molecular properties of these 'nuclei' in birds and reptiles are similar to those of the corresponding layers of the mammalian neocortex. The fundamental pathways and cell groups of the auditory, visual and somatosensory systems of the thalamus and telencephalon are homologous at the cellular, circuit, network and gene levels, and are of great antiquity. A proposed altered migration of these homologous neurons and circuits during development is offered as a mechanism that may account for the altered configuration of mammalian telencephalae.
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Affiliation(s)
- Harvey J Karten
- Department of Neurosciences, University of California San Diego, San Diego, CA, USA
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43
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Bruce LL, Erichsen JT, Reiner A. Neurochemical compartmentalization within the pigeon basal ganglia. J Chem Neuroanat 2016; 78:65-86. [PMID: 27562515 DOI: 10.1016/j.jchemneu.2016.08.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2016] [Revised: 08/15/2016] [Accepted: 08/16/2016] [Indexed: 01/20/2023]
Abstract
The goals of this study were to use multiple informative markers to define and characterize the neurochemically distinct compartments of the pigeon basal ganglia, especially striatum and accumbens. To this end, we used antibodies against 12 different neuropeptides, calcium-binding proteins or neurotransmitter-related enzymes that are enriched in the basal ganglia. Our results clarify boundaries between previously described basal ganglia subdivisions in birds, and reveal considerable novel heterogeneity within these previously described subdivisions. Sixteen regions were identified that each displayed a unique neurochemical organization. Four compartments were identified within the dorsal striatal region. The neurochemical characteristics support previous comparisons to part of the central extended amygdala, somatomotor striatum, and associational striatum of mammals, respectively. The medialmost part of the medial striatum, however, has several unique features, including prominent pallidal-like woolly fibers and thus may be a region unique to birds. Four neurochemically distinct regions were identified within the pigeon ventral striatum: the accumbens, paratubercular striatum, ventrocaudal striatum, and the ventral area of the lateral part of the medial striatum that is located adjacent to these regions. The pigeon accumbens is neurochemically similar to the mammalian rostral accumbens. The pigeon paratubercular and ventrocaudal striatal regions are similar to the mammalian accumbens shell. The ventral portions of the medial and lateral parts of the medial striatum, which are located adjacent to accumbens shell-like areas, have neurochemical characteristics as well as previously reported limbic connections that are comparable to the accumbens core. Comparisons to neurochemically identified compartments in reptiles, mammals, and amphibians indicate that, although most of the basic compartments of the basal ganglia were highly conserved during tetrapod evolution, uniquely avian compartments may exist as well.
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Affiliation(s)
- Laura L Bruce
- Department of Biomedical Sciences, Creighton University, Omaha NE, 68178, USA.
| | | | - Anton Reiner
- Department of Anatomy and Neurobiology, The University of Tennessee Health Science Center, Memphis, TN, USA
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Vicario A, Mendoza E, Abellán A, Scharff C, Medina L. Genoarchitecture of the extended amygdala in zebra finch, and expression of FoxP2 in cell corridors of different genetic profile. Brain Struct Funct 2016; 222:481-514. [PMID: 27160258 PMCID: PMC5225162 DOI: 10.1007/s00429-016-1229-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 04/21/2016] [Indexed: 02/01/2023]
Abstract
We used a battery of genes encoding transcription factors (Pax6, Islet1, Nkx2.1, Lhx6, Lhx5, Lhx9, FoxP2) and neuropeptides to study the extended amygdala in developing zebra finches. We identified different components of the central extended amygdala comparable to those found in mice and chickens, including the intercalated amygdalar cells, the central amygdala, and the lateral bed nucleus of the stria terminalis. Many cells likely originate in the dorsal striatal domain, ventral striatal domain, or the pallidal domain, as is the case in mice and chickens. Moreover, a cell subpopulation of the central extended amygdala appears to originate in the prethalamic eminence. As a general principle, these different cells with specific genetic profiles and embryonic origin form separate or partially intermingled cell corridors along the extended amygdala, which may be involved in different functional pathways. In addition, we identified the medial amygdala of the zebra finch. Like in the chickens and mice, it is located in the subpallium and is rich in cells of pallido-preoptic origin, containing minor subpopulations of immigrant cells from the ventral pallium, alar hypothalamus and prethalamic eminence. We also proposed that the medial bed nucleus of the stria terminalis is composed of several parallel cell corridors with different genetic profile and embryonic origin: preoptic, pallidal, hypothalamic, and prethalamic. Several of these cell corridors with distinct origin express FoxP2, a transcription factor implicated in synaptic plasticity. Our results pave the way for studies using zebra finches to understand the neural basis of social behavior, in which the extended amygdala is involved.
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Affiliation(s)
- Alba Vicario
- Laboratory of Brain Development and Evolution, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Institute of Biomedical Research of Lleida (IRBLleida), Avda. Alcalde Rovira Roure 80, Catalunya, 25198, Lleida, Spain
| | | | - Antonio Abellán
- Laboratory of Brain Development and Evolution, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Institute of Biomedical Research of Lleida (IRBLleida), Avda. Alcalde Rovira Roure 80, Catalunya, 25198, Lleida, Spain
| | | | - Loreta Medina
- Laboratory of Brain Development and Evolution, Department of Experimental Medicine, Faculty of Medicine, University of Lleida, Institute of Biomedical Research of Lleida (IRBLleida), Avda. Alcalde Rovira Roure 80, Catalunya, 25198, Lleida, Spain.
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45
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Hanics J, Teleki G, Alpár A, Székely AD, Csillag A. Multiple amygdaloid divisions of arcopallium send convergent projections to the nucleus accumbens and neighboring subpallial amygdala regions in the domestic chicken: a selective pathway tracing and reconstruction study. Brain Struct Funct 2016; 222:301-315. [PMID: 27053075 PMCID: PMC5225175 DOI: 10.1007/s00429-016-1219-8] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Accepted: 03/24/2016] [Indexed: 12/01/2022]
Abstract
Retrograde tracing with choleratoxin B, injected into the nucleus accumbens (Ac) and bed nucleus of stria terminalis, lateral part (BSTL), yielded labeled perikarya in a ring-shaped area of arcopallium, including dorsal and hilar subdivisions, with a wedge-shaped node of dense accumulation in the amygdalopiriform area (APir). Also, the position of source neurons for this arcopallio-subpallial pathway was verified by anterograde tracing. Three subregions of arcopallium (amygdalopiriform, dorsal, hilar) were injected with dextran (10 kDa), and fibers and terminal fields were detected in Ac, BSTL and extended amygdala (EA). Most abundant projections to Ac arose from APir. The study enabled precise description of the main output fiber streams: the dorsal stream follows the dorsal border of arcopallium and, continuing in the ventral amygdalofugal tract, it traverses the EA and the BSTL before reaching the Ac. The ventral stream of fibers enters the EA along the ventral subpallial border and terminates in the basal nucleus and ventral pallidum. The course of the pathway was reconstructed in 3D. Retrogradely labeled arcopallial neurons were devoid of DARPP-32. DARPP-32 was present in the Ac but not the BSTL. No colocalization between the calcium binding proteins calbindin, parvalbumin and calretinin, and retrogradely labeled neurons was detected, despite a considerable territorial overlap. This finding further supports the excitatory nature of the arcopallial-accumbens pathway. Conjoint and convergent amygdalar input to EA, including BSTL, as well as to Ac subregions likely transmits fear and aggression related signals to both viscerolimbic (EA) and learned reward- and motivation-related (Ac) ventrobasal forebrain regions.
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Affiliation(s)
- János Hanics
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 58. Tuzolto utca, 1094, Budapest, Hungary.,MTA-SE NAP B Research Group of Experimental Neuroanatomy and Developmental Biology, Hungarian Academy of Sciences, Budapest, Hungary
| | - Gyöngyi Teleki
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 58. Tuzolto utca, 1094, Budapest, Hungary
| | - Alán Alpár
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 58. Tuzolto utca, 1094, Budapest, Hungary.,MTA-SE NAP B Research Group of Experimental Neuroanatomy and Developmental Biology, Hungarian Academy of Sciences, Budapest, Hungary
| | - Andrea D Székely
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 58. Tuzolto utca, 1094, Budapest, Hungary
| | - András Csillag
- Department of Anatomy, Histology and Embryology, Faculty of Medicine, Semmelweis University, 58. Tuzolto utca, 1094, Budapest, Hungary.
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46
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Güntürkün O, Bugnyar T. Cognition without Cortex. Trends Cogn Sci 2016; 20:291-303. [DOI: 10.1016/j.tics.2016.02.001] [Citation(s) in RCA: 142] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 10/22/2022]
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47
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Stacho M, Letzner S, Theiss C, Manns M, Güntürkün O. A GABAergic tecto-tegmento-tectal pathway in pigeons. J Comp Neurol 2016; 524:2886-913. [DOI: 10.1002/cne.23999] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2015] [Revised: 03/10/2016] [Accepted: 03/10/2016] [Indexed: 12/20/2022]
Affiliation(s)
- Martin Stacho
- Department of Biopsychology, Faculty of Psychology, Institute of Cogntive Neuroscience; Ruhr-University Bochum; 44801 Bochum Germany
| | - Sara Letzner
- Department of Biopsychology, Faculty of Psychology, Institute of Cogntive Neuroscience; Ruhr-University Bochum; 44801 Bochum Germany
| | - Carsten Theiss
- Department of Cytology, Faculty of Medicine; Ruhr-University Bochum; 44801 Bochum Germany
| | - Martina Manns
- Department of Biopsychology, Faculty of Psychology, Institute of Cogntive Neuroscience; Ruhr-University Bochum; 44801 Bochum Germany
| | - Onur Güntürkün
- Department of Biopsychology, Faculty of Psychology, Institute of Cogntive Neuroscience; Ruhr-University Bochum; 44801 Bochum Germany
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Elie JE, Soula HA, Trouvé C, Mathevon N, Vignal C. Housing conditions and sacrifice protocol affect neural activity and vocal behavior in a songbird species, the zebra finch (Taeniopygia guttata). C R Biol 2015; 338:825-37. [PMID: 26599152 DOI: 10.1016/j.crvi.2015.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 09/16/2015] [Accepted: 09/18/2015] [Indexed: 01/13/2023]
Abstract
Individual cages represent a widely used housing condition in laboratories. This isolation represents an impoverished physical and social environment in gregarious animals. It prevents animals from socializing, even when auditory and visual contact is maintained. Zebra finches are colonial songbirds that are widely used as laboratory animals for the study of vocal communication from brain to behavior. In this study, we investigated the effect of single housing on the vocal behavior and the brain activity of male zebra finches (Taeniopygia guttata): male birds housed in individual cages were compared to freely interacting male birds housed as a social group in a communal cage. We focused on the activity of septo-hypothalamic regions of the "social behavior network" (SBN), a set of limbic regions involved in several social behaviors in vertebrates. The activity of four structures of the SBN (BSTm, medial bed nucleus of the stria terminalis; POM, medial preoptic area; lateral septum; ventromedial hypothalamus) and one associated region (paraventricular nucleus of the hypothalamus) was assessed using immunoreactive nuclei density of the immediate early gene Zenk (egr-1). We further assessed the identity of active cell populations by labeling vasotocin (VT). Brain activity was related to behavioral activities of birds like physical and vocal interactions. We showed that individual housing modifies vocal exchanges between birds compared to communal housing. This is of particular importance in the zebra finch, a model species for the study of vocal communication. In addition, a protocol that daily removes one or two birds from the group affects differently male zebra finches depending of their housing conditions: while communally-housed males changed their vocal output, brains of individually housed males show increased Zenk labeling in non-VT cells of the BSTm and enhanced correlation of Zenk-revealed activity between the studied structures. These results show that housing conditions must gain some attention in behavioral neuroscience protocols.
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Affiliation(s)
- Julie Estelle Elie
- Université de Lyon/Saint-Étienne, Équipe de Neuro-Éthologie Sensorielle, ENES/Neuro-PSI, CNRS UMR 9197, 23, rue Michelon, 42023 Saint-Étienne, France.
| | - Hédi Antoine Soula
- Université de Lyon, INSERM U1060, INSA de Lyon, bâtiment Louis-Pasteur, 20, avenue Albert-Einstein, 69621 Villeurbanne cedex, France; INRIA EPI BEAGLE, bâtiment CEI-1, 66, boulevard Niels-Bohr, CS 52132, 69603 Villeurbanne, France
| | - Colette Trouvé
- CNRS, Centre d'études biologiques de Chizé, UMR 7372, 79360 Villiers-en-Bois, France
| | - Nicolas Mathevon
- Université de Lyon/Saint-Étienne, Équipe de Neuro-Éthologie Sensorielle, ENES/Neuro-PSI, CNRS UMR 9197, 23, rue Michelon, 42023 Saint-Étienne, France
| | - Clémentine Vignal
- Université de Lyon/Saint-Étienne, Équipe de Neuro-Éthologie Sensorielle, ENES/Neuro-PSI, CNRS UMR 9197, 23, rue Michelon, 42023 Saint-Étienne, France
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49
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Letzner S, Simon A, Güntürkün O. Connectivity and neurochemistry of the commissura anterior of the pigeon (Columba livia). J Comp Neurol 2015; 524:343-61. [PMID: 26179777 PMCID: PMC5049482 DOI: 10.1002/cne.23858] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2015] [Revised: 07/02/2015] [Accepted: 07/06/2015] [Indexed: 01/05/2023]
Abstract
The anterior commissure (AC) and the much smaller hippocampal commissure constitute the only interhemispheric pathways at the telencephalic level in birds. Since the degeneration study from Zeier and Karten (), no detailed description of the topographic organization of the AC has been performed. This information is not only necessary for a better understanding of interhemispheric transfer in birds, but also for a comparative analysis of the evolution of commissural systems in the vertebrate classes. We therefore examined the fiber connections of the AC by using choleratoxin subunit B (CTB) and biotinylated dextran amine (BDA). Injections into subareas of the arcopallium and posterior amygdala (PoA) demonstrated contralateral projection fields within the anterior arcopallium (AA), intermediate arcopallium (AI), PoA, lateral, caudolateral and central nidopallium, dorsal and ventral mesopallium, and medial striatum (MSt). Interestingly, only arcopallial and amygdaloid projections were reciprocally organized, and all AC projections originated within a rather small area of the arcopallium and the PoA. The commissural neurons were not GABA-positive, and thus possibly not of an inhibitory nature. In sum, our neuroanatomical study demonstrates that a small group of arcopallial and amygdaloid neurons constitute a wide range of contralateral projections to sensorimotor and limbic structures. Different from mammals, in birds the neurons that project via the AC constitute mostly heterotopically organized and unidirectional connections. In addition, the great majority of pallial areas do not participate by themselves in interhemispheric exchange in birds. Instead, commissural exchange rests on a rather small arcopallial and amygdaloid cluster of neurons.
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Affiliation(s)
- Sara Letzner
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
| | - Annika Simon
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
| | - Onur Güntürkün
- Department of Biopsychology, Institute of Cognitive Neuroscience, Faculty of Psychology, Ruhr-University Bochum, Bochum, Germany
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50
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Vicario A, Abellán A, Medina L. Embryonic Origin of the Islet1 and Pax6 Neurons of the Chicken Central Extended Amygdala Using Cell Migration Assays and Relation to Different Neuropeptide-Containing Cells. BRAIN, BEHAVIOR AND EVOLUTION 2015; 85:139-69. [DOI: 10.1159/000381004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2014] [Accepted: 02/12/2015] [Indexed: 11/19/2022]
Abstract
In a recent study, we tentatively identified different subdivisions of the central extended amygdala (EAce) in chicken based on the expression of region-specific transcription factors (including Pax6 and Islet1) and several phenotypic markers during embryonic development. Such a proposal was partially based on the suggestion that, similarly to the subdivisions of the EAce of mammals, the Pax6 and Islet1 neurons of the comparable chicken subdivisions derive from the dorsal (Std) or ventral striatal embryonic domains (Stv), respectively. To investigate whether this is true, in the present study, we carried out cell migration assays from chicken Std or Stv combined with immunofluorescence for Pax6 or Islet1. Our results showed that the cells of the proposed chicken EAce truly originate in either Std (expressing Pax6) or Stv (expressing Islet1). This includes lateral subdivisions previously compared to the intercalated amygdalar cells and the central amygdala of mammals, also rich in Std-derived Pax6 cells and/or Stv-derived Islet1 cells. In the medial region of the chicken EAce, the dorsal part of the lateral bed nucleus of the stria terminalis (BSTL) contains numerous cells expressing Nkx2.1 (mostly derived from the pallidal domain), but our migration assays showed that it also contains neuron subpopulations from the Stv (expressing Islet1) and Std (expressing Pax6), resembling the mouse BSTL. These findings, together with those previously published in different species of mammals, birds and reptiles, support the homology of the chicken EAce to that of other vertebrates, and reinforce the existence of several cell subcorridors inside the EAce. In addition, together with previously published data on neuropeptidergic cells, these results led us to propose the existence of at least seventeen neuron subtypes in the EAce in rodents and/or some birds (chicken and pigeon). The functional significance and the evolutionary origin of each subtype needs to be analyzed separately, and such studies are mandatory in order to understand the multifaceted modulation by the EAce of fear responses, ingestion, motivation and pain in different vertebrates.
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