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Cortical projection neurons with distinct axonal connectivity employ ribosomal complexes with distinct protein compositions.
bioRxiv
December 2024
Department of Stem Cell and Regenerative Biology, and Center for Brain Science, Harvard University, Cambridge, MA, USA.
Diverse subtypes of cortical projection neurons (PN) form long-range axonal projections that are responsible for distinct sensory, motor, cognitive, and behavioral functions. Translational control has been identified at multiple stages of PN development, but how translational regulation contributes to formation of distinct, subtype-specific long-range circuits is poorly understood. Ribosomal complexes (RCs) exhibit variations of their component proteins, with an increasing set of examples that confer specialized translational control.
View Article and Find Full Text PDFD1 Receptor Functional Asymmetry at Striatonigral Neurons: A Neurochemical and Behavioral Study in Male Wistar Rats.
J Neurosci Res
January 2025
Departamento de Fisiología, Biofísica y Neurociencias, Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional, Ciudad de Mexico, Mexico.
Lateralization of motor behavior, a common phenomenon in humans and several species, is modulated by the basal ganglia, a site pointed out for the interhemispheric differences related to lateralization. Our study aims to shed light on the potential role of the striatonigral D1 receptor in functional asymmetry in normal conditions through neurochemical and behavioral means. We found that D1 receptor activation and D1/D3 receptor coactivation in striatonigral neurons leads to more cAMP production by adenylyl cyclase in the striatum and GABA release in their terminals in the right hemisphere compared to the left.
View Article and Find Full Text PDFSyntactic development and its interplay with word processing and working memory in preschoolers' brain: An fNIRS longitudinal study.
Neuroimage
January 2025
School of Psychology, Shenzhen University, Shenzhen, China. Electronic address:
Understanding how children acquire syntactic structures from a limited set of grammatical rules and use them creatively to convey meaning has been a longstanding interest for scientific communities. Previous studies on syntactic development have revealed its close correlation with the development of vocabulary and working memory. Our study sought to elucidate how the relations between syntactic processing, word processing, and working memory were instantiated in the brain, and how earlier neural patterns might predict language abilities one year later.
View Article and Find Full Text PDFBrain Functional Characteristics in Football Players During Motor-Cognitive Dual Task: Insights From fNIRS.
Scand J Med Sci Sports
January 2025
School of Physical Education, Shanghai University of Sport, Shanghai, China.
Long-term training enables professional athletes to develop concentrated and efficient neural network organizations for specific tasks. This study used functional near-infrared spectroscopy to investigate task performance, brain functional characteristics, and their relationships in footballers during sport-specific motor-cognitive processes. Twenty-four footballers (athlete group, with 18 remaining of good signal quality) and 20 non-footballers (control group, with 16 remaining) completed four tasks: a single task (trigger buttons corresponding to the appearance direction of teammates with kicking actions), an N-back direction task, a dual task, and an N-back digit task.
View Article and Find Full Text PDFMicrostructural Degeneration of the Corpus Callosum in Parkinson's Disease with Unilateral Onset: A Free-Water Imaging Study.
ACS Chem Neurosci
January 2025
Department of Radiology, The Second Affiliated Hospital, Zhejiang University of Medicine, Hangzhou 310009, China.
Article Synopsis
- Motor symptom laterality in Parkinson's Disease (PD) impacts both motor and nonmotor symptoms, potentially altering patient prognosis, with compensatory mechanisms in the brain's dominant hemisphere playing a key role.
- This study investigated the microstructural changes in the corpus callosum (CC), the brain's main connector between hemispheres, in 201 right-handed PD patients (split between left- and right-onset) compared to 100 healthy controls using advanced imaging techniques.
- Findings revealed reduced free water and fractional anisotropy, along with increased mean diffusivity in the CC of patients with left-side PD onset, highlighting the relationship between brain structure and disease symptoms.
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