Comparative anatomy of the encephalon of new world primates with emphasis for the Sapajus sp

Abreu, Tainá de; Tavares, Maria Clotilde Henriques; Bretas, Rafael; Rodrigues, Rosângela Correa; Pissinati, Alcides; Aversi-Ferreira, Tales Alexandre

doi:10.1371/journal.pone.0256309

Cited by 8 publications

(20 citation statements)

References 51 publications

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“…Post necropsy, ZIKV exposed fetal brains were visually assessed for gross structural defects, primarily, overall size, and gyri and sulci formation compared to the control brains ( Fig 3 ). This comparative visual assessment was made based on previous neuroanatomic publications detailing gyri and sulci formation in fetal baboons [ 50 ] macaques [ 51 ] multiple non-human primates (old and new world monkeys) [ 52 ] and the brain atlas of rhesus and cynomolgus macaques [ 53 ]. Fig 3A shows a representative control fetal brain with different major sulci and gyri labeled.…”

Section: Resultsmentioning

confidence: 99%

Early and mid-gestation Zika virus (ZIKV) infection in the olive baboon (Papio anubis) leads to fetal CNS pathology by term gestation

Gurung

Reuter²,

Norris³

et al. 2022

PLoS Pathog

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Zika virus (ZIKV) infection in pregnancy can produce catastrophic teratogenic damage to the developing fetus including microcephaly and congenital Zika syndrome (CZS). We previously described fetal CNS pathology occurring by three weeks post-ZIKV inoculation in Olive baboons at mid-gestation, including neuroinflammation, loss of radial glia (RG), RG fibers, neuroprogenitor cells (NPCs) resulting in disrupted NPC migration. In the present study, we explored fetal brain pathologies at term gestation resulting from ZIKV exposure during either first or second trimester in the Olive baboon. In all dams, vRNA in whole blood resolved after 7 days post inoculation (dpi). One first trimester infected dam aborted at 5 dpi. All dams developed IgM and IgG response to ZIKV with ZIKV IgG detected in fetal serum. Placental pathology and inflammation were observed including disruption of syncytiotrophoblast layers, delayed villous maturation, partially or fully thrombosed vessels, calcium mineralization and fibrin deposits. In the uterus, ZIKV was detected in ¾ first trimester but not in second trimester infected dams. While ZIKV was not detected in any fetal tissue at term, all fetuses exhibited varying degrees of neuropathology. Fetal brains from ZIKV inoculated dams exhibited a range of gross brain pathologies including irregularities of the major gyri and sulci of the cerebral cortex and cerebellar pathology. Frontal cortices of ZIKV fetuses showed a general disorganization of the six-layered cortex with degree of disorganization varying among the fetuses from the two groups. Frontal cortices from ZIKV inoculation in the first but not second trimester exhibited increased microglia, and in both trimester ZIKV inoculation, increased astrocyte numbers (white matter). In the cerebellum, increased microglia were observed in fetuses from both first and second trimester inoculation. In first trimester ZIKV inoculation, decreased oligodendrocyte precursor cell populations were observed in fetal cerebellar white matter. In general, our observations are in accordance with those described in human ZIKV infected fetuses.

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Section: Resultsmentioning

confidence: 99%

Early and mid-gestation Zika virus (ZIKV) infection in the olive baboon (Papio anubis) leads to fetal CNS pathology by term gestation

Gurung

Reuter²,

Norris³

et al. 2022

PLoS Pathog

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“…The skull is the most studied and documented part of the vertebrate skeleton, perhaps because of its relationship to the encephalon. In fact, data derived from the skull indicate the volume of the encephalon and the encephalization index of a species allowing to verify the cognitive evolution of the species, especially primates (TORREY, 1978;MADDIN et al, 2020;ABREU et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…On the evolutionary scale the skull of the most derived beings shows the least amount of bones (JOLLIE, 1984;BASTIR et al, 2010). Bone fusions occur; however, other possibilities such as the disappearance of bone pieces and/or the primordial cartilage, or in some rare cases, a new bone which has developed and does not present a homology with the others if the latter is of dermal origin and the other located in a nearby place is of endochondral origin, are other possibilities [NOERDEN, 1987;MADDIN et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…The neurocranium is related to the parts of the skeleton of dermal or cartilaginous origin that surround the sense organs and the encephalon (figure 1) (NODEN;TRAINOR, 2005;BASTIR et al, 2010). The splancnocranium is the skeleton, also with the two origins mentioned above, that forms the structure of the maxilla, the mandible and the support of the mouth (HIDELBRAND; GOSLOW, 2006) (figure 1).…”

Section: Introductionmentioning

confidence: 99%

“…MATA; MATA; AVERSI-FERREIRA, 2010; KOYABU; MAIER; SÁNCHEZ-VILLAGRA, 2012).In primates, the dermal bones of the upper-anterior portion of the skull have become enormous to house an encephalon of immense proportions compared to other animals(PEREIRA-DE-PAULA, 2010;MONSON, 2020;ABREU et al, 2021). The periotic bone fuses with the squamous bone to form a temporal bone, and the tympanic membrane is a new structure(NODEN;TRAINOR, 2005;MONSON, 2020).…”

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confidence: 99%

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Phylogenetic evolutionary aspects of the vertebrate skull - an approach for teaching: vertebrate skull

Aversi‐Ferreira¹,

Bento

Nogueira

et al. 2022

CONJ

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In this work, the fundamental data will be placed as logically as possible within a simple, but not simplistic philosophy, therefore, the objective was to indicate the basic ontogenetic and phylogenetic data in terms of the evolutionary history of the vertebrate skull starting from the initial, often idealized, structures that formed the framework of the primitive vertebrate skull. Therefore, the methodology used was a literature review, in order to refine the information. From this methodology, the expected result was to reduce the excess or oversimplification of information that could fail in the teaching processes, to avoid the danger of errors of the interpretation. An overview with basic data, but well ordered in terms of substitutions and phylogenetic history is essential to prepare future scientists in the areas of morphology, taxonomy, evolution, comparative anatomy, paleontology, forensic anatomy; therefore, this text was builded objectively as possible to be consulted for the teaching/learning of the cranium comparative anatomy.

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Sex differences in white matter tracts of capuchin monkey brains

Reilly

Brosnan

Benítez

et al. 2023

J of Comparative Neurology

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Nonhuman primates exhibit sexual dimorphism in behavior, suggesting that there could be underlying differences in brain organization and function. Understanding this neuroanatomical variation is critical for enhancing our understanding of the evolution of sex differences in the human brain. Tufted capuchin monkeys (Sapajus [Cebus] apella) represent a phylogenetically diverse taxa of neotropical primates that converge on several behavioral characteristics with humans relevant to social organization, making them an important point of comparison for studying the evolution of sex differences in primates. While anatomical sex differences in gray matter have previously been found in capuchin monkeys, the current study investigates sex differences in white matter tracts. We carried out tract‐based spatial statistical analysis on fractional anisotropy images of tufted capuchin monkeys (15 female, 5 male). We found that females showed significantly higher fractional anisotropy than males in regions of frontal‐parietal white matter in the right cerebral hemisphere. Paralleling earlier findings in gray matter, male and female fractional anisotropy values in these regions were nonoverlapping. This complements prior work pointing toward capuchin sex differences in limbic circuitry and higher‐order visual regions. We propose that these sex differences are related to the distinct socioecological niches occupied by male and female capuchins. Capuchin neuroanatomical sex differences appear to be more pronounced than in humans, which we suggest may relate to human adaptations for prolonged neurodevelopmental trajectories and increased plasticity.

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Comparative anatomy of the encephalon of new world primates with emphasis for the Sapajus sp

Cited by 8 publications

References 51 publications

Early and mid-gestation Zika virus (ZIKV) infection in the olive baboon (Papio anubis) leads to fetal CNS pathology by term gestation

Early and mid-gestation Zika virus (ZIKV) infection in the olive baboon (Papio anubis) leads to fetal CNS pathology by term gestation

Phylogenetic evolutionary aspects of the vertebrate skull - an approach for teaching: vertebrate skull

Sex differences in white matter tracts of capuchin monkey brains

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