White matter plasticity during second language learning within and across hemispheres DOI Creative Commons
Xuehu Wei, Thomas C. Gunter, Helyne Adamson

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(2)

Published: Jan. 4, 2024

Adult second language (L2) learning is a challenging enterprise inducing neuroplastic changes in the human brain. However, it remains unclear how structural connectome and its subnetworks change during adult L2 learning. The current study investigated longitudinal white matter (WM) networks each hemisphere, as well their interconnection, large group of Arabic-speaking adults who learned German intensively for 6 mo. We found significant increase WM-connectivity within bilateral temporal-parietal semantic phonological right temporal-frontal pathways mainly half period. At same time, between two hemispheres decreased significantly. Crucially, these are correlated with performance. observed suggest network reconfiguration due to lexical reduced interhemispheric connectivity may indicate key role corpus callosum by reducing inhibition language-dominant left hemisphere. Our highlights dynamic across language-related driven

Language: Английский

Activation of glucagon-like peptide-1 receptor in microglia attenuates neuroinflammation-induced glial scarring via rescuing Arf and Rho GAP adapter protein 3 expressions after nerve injury DOI Creative Commons
Zhanyang Qian, Hongtao Chen,

Mingjie Xia

et al.

International Journal of Biological Sciences, Journal Year: 2022, Volume and Issue: 18(4), P. 1328 - 1346

Published: Jan. 1, 2022

Rationale:The neuroinflammation is necessary for glial group initiation and clearance of damaged cell debris after nerve injury.However, the proinflammatory polarization excessive microglia amplifies secondary injury via enhancing cross-talk with astrocytes exacerbating neurological destruction spinal cord (SCI).The glucagon-like peptide-1 receptor (GLP-1R) agonist has been previously shown to have a neuroprotective effect in neurodegeneration, whereas its potency microglial inflammation SCI still unknown.Methods: The mechanism GLP-1R activation by exendin-4 (Ex-4) were investigated vitro cultured groups vivo mice.Alterations gene expression inflammatory measured using mRNA sequencing.The polarization, neuroinflammatory level, astrocyte reaction detected western blotting, flow cytometry, immunofluorescence.The recoveries histology function also observed imaging ethological examinations.Results: attenuated microglia-induced reversing M1 subtypes M2 vivo.In addition, blocked production reactive astrocytes.We found less neuroinflammation, astrocytes, corrected myelin integrity, ameliorated histology, improved locomotor mice treated Ex-4.Mechanistically, we that Ex-4 rescued RNA Arf Rho GAP adapter protein 3 (ARAP3).Knockdown ARAP3 reversed RhoA pharmacological on anti-inflammation vitro.Conclusion: exhibited unidentified role reducing mediation PI3K/ARAP3/RhoA signaling pathway, targeting microglia, exerted post-SCI, implying was therapeutical option treatment injury.

Language: Английский

Citations

37

Brain–immune interaction mechanisms: Implications for cognitive dysfunction in psychiatric disorders DOI
Fangyi Zhao, Bingjin Li, Wei Yang

et al.

Cell Proliferation, Journal Year: 2022, Volume and Issue: 55(10)

Published: July 20, 2022

Abstract Objectives Cognitive dysfunction has been identified as a major symptom of series psychiatric disorders. Multidisciplinary studies have shown that cognitive is monitored by two‐way interaction between the neural and immune systems. However, specific mechanisms in response brain remain unclear. Materials methods In this review, we summarized relevant research to uncover our comprehension brain–immune underlying decline. Results The pathophysiological brain‐immune interactions psychiatric‐based involve several molecules their associated signaling pathways, impairments synaptic plasticity, potential neuro‐immunological mechanism stress. Conclusions Therefore, review may provide better theoretical basis for integrative therapeutic considerations disorders with dysfunction.

Language: Английский

Citations

29

Functional and microstructural plasticity following social and interoceptive mental training DOI Creative Commons
Sofie L. Valk, Philipp Kanske, Bo‐yong Park

et al.

eLife, Journal Year: 2023, Volume and Issue: 12

Published: July 7, 2023

The human brain supports social cognitive functions, including Theory of Mind, empathy, and compassion, through its intrinsic hierarchical organization. However, it remains unclear how the learning refinement skills shapes function structure. We studied if different types mental training induce changes in cortical microstructure, investigating 332 healthy adults (197 women, 20–55 years) with repeated multimodal neuroimaging behavioral testing. Our approach examined longitudinal functional gradients myelin-sensitive T1 relaxometry, two complementary measures observed marked which varied as a content. In particular, microstructure changed result attention-mindfulness socio-cognitive regions functionally associated attention interoception, insular parietal cortices. Conversely, socio-affective resulted differential microstructural classically implicated interoceptive emotional processing, orbitofrontal areas, but did not reorganization. Notably, predicted change attention, compassion perspective-taking. work demonstrates plasticity after social-interoceptive illustrates bidirectional relationship between organisation skills.

Language: Английский

Citations

23

Myelin Pathology in Alzheimer's Disease: Potential Therapeutic Opportunities DOI Creative Commons
Zhihai Huang, J. Dedrick Jordan, Quanguang Zhang

et al.

Aging and Disease, Journal Year: 2023, Volume and Issue: 15(2), P. 698 - 698

Published: Aug. 2, 2023

Cellular senescence is an irreversible and multifaceted process inducing tissue dysfunction organismal aging, thus the clearance of senescent cells can prevent or delay onset aging-related pathologies. Herein, we developed augmented photothermal therapy strategy integrated with antibody against β2-microglobulin (aB2MG) immune adjuvant imiquimod (R837) to effectively accelerate cell apoptosis under a near-infrared light. With this strategy, designed CroR@aB2MG enables targeting application concomitantly, initiation subsequently, finally realization protective effects senescence. Our results showed that photo-induced heating effect caused quickly undergo synchronous response accelerated in vitro vivo. Therefore, photoactivated speedy clearing may provide efficient way for treatment senescence-related diseases by eliminating biomaterials.

Language: Английский

Citations

18

White matter plasticity during second language learning within and across hemispheres DOI Creative Commons
Xuehu Wei, Thomas C. Gunter, Helyne Adamson

et al.

Proceedings of the National Academy of Sciences, Journal Year: 2024, Volume and Issue: 121(2)

Published: Jan. 4, 2024

Adult second language (L2) learning is a challenging enterprise inducing neuroplastic changes in the human brain. However, it remains unclear how structural connectome and its subnetworks change during adult L2 learning. The current study investigated longitudinal white matter (WM) networks each hemisphere, as well their interconnection, large group of Arabic-speaking adults who learned German intensively for 6 mo. We found significant increase WM-connectivity within bilateral temporal-parietal semantic phonological right temporal-frontal pathways mainly half period. At same time, between two hemispheres decreased significantly. Crucially, these are correlated with performance. observed suggest network reconfiguration due to lexical reduced interhemispheric connectivity may indicate key role corpus callosum by reducing inhibition language-dominant left hemisphere. Our highlights dynamic across language-related driven

Language: Английский

Citations

9