Fractions of light and heavy synaptosomes were prepared from associative temporal area of cat brain, which were previously tested behaviorally for ability to solve the generalization, gnostic and abstraction tasks. The synaptic membrane subfractions and synaptoplasma fractions were isolated and the content of the total protein and of the demasked protein sulfhydryl groups (SH groups) was investigated spectrophotometrically. The maximal content of the demasked SH groups was revealed in the upper subfractions (mainly the membranes of cholinergic synapses) and minimal content--in the lower subfractions (mainly noncholinergic synapses). Significantly smaller total protein content in the upper and middle subfractions of light synaptosomes was found, and more demasked SH groups in the membrane-bound proteins of the upper and middle subfractions of light and heavy synaptosomes was found in the cortex area of the "clever" then "silly" cats. Suggestion concerning characteristic for brains of "clever" cats relatively low total quantity of synapses in the area Ep of the cortex and significantly higher proportion of cholinergic ones is discussed.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Thermoelectric Properties of a Light Compound FeS: the Role of Electron Correlation Strengthened Spin-Orbital Coupling.
Small
January 2025
Center of Quantum Materials and Devices, College of Physics, Chongqing University, Chongqing, 401331, China.
Spin-orbit coupling (SOC) induced nontrivial bandgap and complex Fermi surface has been considered to be profitable for thermoelectrics, which, however, is generally appreciable only in heavy elements, thereby detrimental to practical application. In this study, the SOC-driven extraordinary thermoelectric performance in a light 2D material Fe₂S₂ is demonstrated via first-principles calculations. The abnormally strong SOC, induced by electron correlation through 3d orbitals polarization, significantly renormalizes the band structures, which opens the bandgap via Fe 3d orbitals inversion, exposes the second conduction valley with weak electron-phonon coupling, and aligns the energy of Fe 3d and S 3p orbitals with divergent momentum in valence band.
View Article and Find Full Text PDFEvaluating the bioavailability of rare earth elements in paddy soils and their uptake in rice grains for human health risk.
Environ Geochem Health
January 2025
Department of Agricultural Chemistry, National Taiwan University, Taipei, 10617, Taiwan.
Rare earth elements (REEs) are a critical global focus due to their increasing use, raising concerns about their environmental distribution and human exposure, both vital to food safety and human health. Surface soil (0-30 cm) and corresponding rice grain samples (n = 85) were collected from paddy fields in Taiwan. This study investigated the total REE contents in soil through aqua regia digestion, as well as their labile forms extracted using 0.
View Article and Find Full Text PDFA Schiff base-functionalized chitosan magnetic bio-nanocomposite for efficient removal of Pb (II) and Cd (II) ions from aqueous solutions.
Int J Biol Macromol
January 2025
Department of Chemistry, Faculty of Science, Arak University, Arak 38481-77584, Iran; Institute of Nanosciences &Nanotechnology, Arak University, Arak, Iran. Electronic address:
The rapid industrialization and human activities in catchments have posed notable global challenges in removing of heavy metal contaminants from wastewater. Here, Schiff-bases (SB) of cyanoguanidine (CG) and salicylaldehyde (SA) were covalently grafted on a magnetic nanocomposite of chitosan to form a hybrid magnetic nanostructure (FeO@CS-CGSB). The synthesized structure was characterized using various techniques such as Fourier transform infrared spectroscopy (FT-IR), field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD), thermogravimetric analysis (TGA), vibrating sample magnetometry (VSM), dynamic light scattering (DLS), zeta potential, and Brunauer-Emmett-Teller surface area analysis (BET).
View Article and Find Full Text PDFAnticipatory and Compensatory Postural Adjustments in Sitting and Standing Positions During Functional Activities in Children With Cerebral Palsy.
Physiother Res Int
January 2025
King Fahad Armed Forces Hospital, Jeddah, Saudi Arabia.
Background And Purpose: Anticipatory postural adjustments (APA) and compensatory postural adjustments (CPA) have played a vital role in postural control since early childhood, which is critical to accomplishing activities in daily life. However, literature indicated dissimilarities and inconsistencies in APA and CPA analysis in sitting and standing positions in children with Cerebral Palsy (CP). Thus, this study analyzed the changes in postural control (APA and CPA) through the postural muscles [rectus abdominis (RA) and erector spinae (ES)] in both standing and sitting positions during functional activities (grasping a ball) in children with CP.
View Article and Find Full Text PDFSchool-Based Epidemiology of Infection in Kharif District of Amran Governorate, North of Yemen: Need for Chemopreventive Strategy Revisiting.
Infect Drug Resist
January 2025
Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Al Baha University, Al Baha, Saudi Arabia.
Background: Urogenital schistosomiasis is a persistent public health problem in many rural areas of Yemen. Since 2014, epidemiology has not been assessed in Amran governorate, north of Yemen, where is known to be highly endemic. Therefore, this study determined the prevalence and risk factors associated with infection among schoolchildren in Kharif district of the governorate.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!