In order to examine the uptake of L-serine into brain structures and brain metabolic compartments, L-[U-14C]serine was injected into tail vein of mice. The uptake was examined 30 min, 90 min, 3 h and 5 h after injection by both quantitative autoradiography of coronal brain sections and by biochemical analysis. Brain radioactivity was extracted and partitioned into protein associated pellets, metabolites soluble in aqueous phase and lipids soluble in the organic phase. Most of the radioactivity was found in the aqueous phase, about 10% was incorporated into lipids. Among phospholipids the highest label was found in phosphatidylserine, then in phosphatidylethanolamine and in phosphatidylcholine, it amounted to 52%, 30% and 18% of label by 90 min after injection, respectively. The brain distribution of L-serine uptake resembled that described for strychnine-insensitive [3H]glycine binding, with cortical structures being preferentially labelled.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.55782/ane-1995-1082 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Development and biological evaluation of a novel CEACAM6-targeted PET tracer for distinguishing malignant nodules in early-stage lung adenocarcinoma.
Eur J Nucl Med Mol Imaging
January 2025
School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
Purpose: Low-dose CT (LDCT) screening effectively reduces lung adenocarcinoma (LUAD) mortality. However, accurately evaluating the malignant potential of indeterminate lung nodules remains a challenge. Carcinoembryonic antigen cell adhesion molecule 6 (CEACAM6), a potential biomarker for distinguishing benign pulmonary nodules from LUAD, may be leveraged for noninvasive positron emission tomography (PET) imaging to aid LUAD diagnosis.
View Article and Find Full Text PDFDopaminergic Mechanisms of Cognitive Flexibility: An [F]Fallypride PET Study.
J Nucl Med
January 2025
Department of Nuclear Medicine, University Medical Center of the Johannes Gutenberg University Mainz, Mainz, Germany.
Cognitive flexibility is the ability to appropriately adapt one's thinking and behavior to changing environmental demands and is conceptualized as an aspect of executive function. The dopamine system has been implicated in cognitive flexibility; however, a direct, that is, neurochemical, link to cognitive flexibility has not been shown yet. The aim of this study was, therefore, to investigate how cognitive flexibility is mediated by dopaminergic signaling in the ventromedial prefrontal cortex (vmPFC).
View Article and Find Full Text PDFExploring the therapeutic potential of α-(Phenylselanyl) acetophenone in tumor necrosis Factor-α-Induced depressive-like and hyperalgesic behavior in mice.
Brain Res
January 2025
Programa de Pós-Graduação em Bioquímica e Bioprospecção (PPGBBio), Grupo de Pesquisa em Neurobiotecnologia - GPN, Universidade Federal de Pelotas, UFPel, Postal Code 96010-900, Pelotas, RS, Brazil; Programa de Pós-Graduação em Biotecnologia (PPGB), Grupo de Pesquisa em Neurobiotecnologia- GPN, Biotecnologia/Centro de Desenvolvimento Tecnológico, Universidade Federal de Pelotas, Pelotas, RS, Brazil. Electronic address:
Chronic pain and depression exhibit a high comorbidity, are challenging to manage, and their pathophysiology mechanisms are intricated and closely related to the up-regulation of pro-inflammatory response and oxidative stress. Chronic pain and depression often coexist and present significant management challenges. Their underlying pathophysiological mechanisms are complex and closely linked to the up-regulation of pro-inflammatory responses and oxidative stress.
View Article and Find Full Text PDFA pilot randomized controlled trial evaluating haemostasis with fibrin glue during surgery for proliferative diabetic retinopathy.
Am J Ophthalmol
January 2025
Indian Health Outcomes, Public Health, and Economics Research Center, L V Prasad Eye Institute, Hyderabad, Telangana, India; Anant Bajaj Retina Institute, L V Prasad Eye Institute, Hyderabad, Telangana, India. Electronic address:
Purpose: To evaluate the safety and efficacy of fibrin glue in preventing early recurrence of vitreous haemorrhage following surgery for proliferative diabetic retinopathy (PDR).
Design: Single masked randomized-controlled clinical trial SUBJECTS: Consecutive patients with vitreous haemorrhage due to PDR undergoing primary vitreoretinal surgery were screened. After completing all vitreoretinal manoeuvres including endo-cautery to bleeders, infusion pressure was gradually reduced to 5 mmHg.
Heat stress enhances the expression of METTL3 to mediate N6-methyladenosine modification of SOS2 and NLRP3 inflammasome activation in boar Sertoli cells.
J Hazard Mater
January 2025
Chongqing Key Laboratory of Forage & Herbivore, College of Veterinary Medicine, Southwest University, Beibei, Chongqing 400715, PR China. Electronic address:
Heat stress negatively affects pig production by disrupting the immune homeostasis of Sertoli cells (SCs), which compromises sperm quality, culminating in male infertility. Herein, we aimed to study the mechanism by which the NLRP3 inflammasome is activated by heat stress through N6-methyladenosine (mA) modification regulation in SCs. Initially, it was found that heat stress (44°C, 30 min) markedly activated ERK1/2 signaling, which subsequently promoted NLRP3 inflammasome activation and inflammatory cytokine release from SCs.
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!